diff options
author | kkania@chromium.org <kkania@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-09-18 22:02:57 +0000 |
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committer | kkania@chromium.org <kkania@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-09-18 22:02:57 +0000 |
commit | f81cc5ef6c5ae28b3f02717575552c7f13c2d1f0 (patch) | |
tree | d402e7a4dba1796c13ba1421e27108c2e6283fba /third_party | |
parent | b90c75afa26473fae4e6c2333beb241b7da27203 (diff) | |
download | chromium_src-f81cc5ef6c5ae28b3f02717575552c7f13c2d1f0.zip chromium_src-f81cc5ef6c5ae28b3f02717575552c7f13c2d1f0.tar.gz chromium_src-f81cc5ef6c5ae28b3f02717575552c7f13c2d1f0.tar.bz2 |
Delete old chromedriver code, and remove mongoose webserver.
BUG=none
TBR=hnguyen,darin (src/third_party removal)
Review URL: https://chromiumcodereview.appspot.com/23526047
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@223955 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'third_party')
-rw-r--r-- | third_party/mongoose/LICENSE | 21 | ||||
-rw-r--r-- | third_party/mongoose/README.chromium | 28 | ||||
-rw-r--r-- | third_party/mongoose/chrome-mongoose-modifications.diff | 129 | ||||
-rw-r--r-- | third_party/mongoose/mongoose.c | 4264 | ||||
-rw-r--r-- | third_party/mongoose/mongoose.h | 233 |
5 files changed, 0 insertions, 4675 deletions
diff --git a/third_party/mongoose/LICENSE b/third_party/mongoose/LICENSE deleted file mode 100644 index 51cfa4d..0000000 --- a/third_party/mongoose/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -Copyright (c) 2004-2009 Sergey Lyubka -Portions Copyright (c) 2009 Gilbert Wellisch - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. - diff --git a/third_party/mongoose/README.chromium b/third_party/mongoose/README.chromium deleted file mode 100644 index 39c6f4e..0000000 --- a/third_party/mongoose/README.chromium +++ /dev/null @@ -1,28 +0,0 @@ -Name: Mongoose webserver -Short Name: mongoose -URL: http://code.google.com/p/mongoose/ -License: MIT -Version: 55cf8bf30cd9 -Release: between 3.0 and 3.1 -Security Critical: no - -Description: -Mongoose is an easy to use web server. It can be embedded into existing -application to provide a web interface to it. - -Only the necessary core server is checked in and not the test nor the -bindings to multiple languages. The server is only used to serve custom -URLs from the JSON over HTTP webdriver protocol. - -Note: There is no make file for this project, it's compiled directly in -the chrome version of webdriver found under the directory: - src/chrome/test/webdriver - -Local modifications (all detailed in chrome-mongoose-modifications.diff, -pending upstreaming by danielwh): -* Fixed a couple of Windows/VS2010 compiler warnings/errors -* Fixed linger code to apply to sockets from bind, rather than shutdown -* Don't ignore SIGCHLD, since the proxy launcher depends on it for determining - chrome's exit code. -* Removed a "set but never used" variable, to fix build for gcc 4.6. -* Fixed a compiler warning (-Wmaybe-uninitialized). diff --git a/third_party/mongoose/chrome-mongoose-modifications.diff b/third_party/mongoose/chrome-mongoose-modifications.diff deleted file mode 100644 index b37162d..0000000 --- a/third_party/mongoose/chrome-mongoose-modifications.diff +++ /dev/null @@ -1,129 +0,0 @@ -diff --git a/third_party/mongoose/mongoose.c b/third_party/mongoose/mongoose.c ---- a/third_party/mongoose/mongoose.c -+++ b/third_party/mongoose/mongoose.c -@@ -23,7 +23,9 @@ - #else - #define _XOPEN_SOURCE 600 // For flockfile() on Linux - #define _LARGEFILE_SOURCE // Enable 64-bit file offsets -+#ifndef __STDC_FORMAT_MACROS - #define __STDC_FORMAT_MACROS // <inttypes.h> wants this for C++ -+#endif // __STDC_FORMAT_MACROS - #endif - - #if defined(__SYMBIAN32__) -@@ -51,8 +53,12 @@ - #include <stdio.h> - - #if defined(_WIN32) && !defined(__SYMBIAN32__) // Windows specific -+ #ifdef _WIN32_WINNT -+ #undef _WIN32_WINNT -+ #endif - #define _WIN32_WINNT 0x0400 // To make it link in VS2005 - #include <windows.h> -+#include <winsock2.h> - - #ifndef PATH_MAX - #define PATH_MAX MAX_PATH -@@ -63,7 +69,6 @@ - #include <direct.h> - #include <io.h> - #else // _WIN32_WCE --#include <winsock2.h> - #define NO_CGI // WinCE has no pipes - - typedef long off_t; -@@ -849,7 +854,9 @@ static int pthread_cond_init(pthread_cond_t *cv, const void *unused) { - } - - static int pthread_cond_wait(pthread_cond_t *cv, pthread_mutex_t *mutex) { -- HANDLE handles[] = {cv->signal, cv->broadcast}; -+ HANDLE handles[2]; -+ handles[0] = cv->signal; -+ handles[1] = cv->broadcast; - ReleaseMutex(*mutex); - WaitForMultipleObjects(2, handles, FALSE, INFINITE); - return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1; -@@ -3424,6 +3431,10 @@ static int set_ports_option(struct mg_context *ctx) { - struct vec vec; - struct socket so, *listener; - -+ struct linger linger; -+ linger.l_onoff = 1; -+ linger.l_linger = 1; -+ - while (success && (list = next_option(list, &vec, NULL)) != NULL) { - if (!parse_port_string(&vec, &so)) { - cry(fc(ctx), "%s: %.*s: invalid port spec. Expecting list of: %s", -@@ -3448,6 +3459,8 @@ static int set_ports_option(struct mg_context *ctx) { - // Thanks to Igor Klopov who suggested the patch. - setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (void *) &on, - sizeof(on)) != 0 || -+ setsockopt(sock, SOL_SOCKET, SO_LINGER, (void *) &linger, -+ sizeof(linger)) || - bind(sock, &so.lsa.u.sa, so.lsa.len) != 0 || - listen(sock, 100) != 0) { - closesocket(sock); -@@ -3768,15 +3781,8 @@ static void reset_per_request_attributes(struct mg_connection *conn) { - - static void close_socket_gracefully(SOCKET sock) { - char buf[BUFSIZ]; -- struct linger linger; - int n; - -- // Set linger option to avoid socket hanging out after close. This prevent -- // ephemeral port exhaust problem under high QPS. -- linger.l_onoff = 1; -- linger.l_linger = 1; -- setsockopt(sock, SOL_SOCKET, SO_LINGER, (void *) &linger, sizeof(linger)); -- - // Send FIN to the client - (void) shutdown(sock, SHUT_WR); - set_non_blocking_mode(sock); -@@ -4233,8 +4239,6 @@ struct mg_context *mg_start(mg_callback_t user_callback, void *user_data, - // Ignore SIGPIPE signal, so if browser cancels the request, it - // won't kill the whole process. - (void) signal(SIGPIPE, SIG_IGN); -- // Also ignoring SIGCHLD to let the OS to reap zombies properly. -- (void) signal(SIGCHLD, SIG_IGN); - #endif // !_WIN32 - - (void) pthread_mutex_init(&ctx->mutex, NULL); -@@ -3812,1 +3812,1 @@ static void close_connection(struct mg_connection *conn) { - } - - static void discard_current_request_from_buffer(struct mg_connection *conn) { -- char *buffered; - int buffered_len, body_len; - -- buffered = conn->buf + conn->request_len; - buffered_len = conn->data_len - conn->request_len; - assert(buffered_len >= 0); - -@@ -3867,7 +3865,7 @@ static void handle_proxy_request(struct mg_connection *conn) { - } - conn->peer->client.is_ssl = is_ssl; - } -- -+ - // Forward client's request to the target - mg_printf(conn->peer, "%s %s HTTP/%s\r\n", ri->request_method, ri->uri + len, - ri->http_version); -@@ -2820,6 +2820,8 @@ static void prepare_cgi_environment(struct mg_connection *conn, - blk->len = blk->nvars = 0; - blk->conn = conn; - -+ memset(&root, 0, sizeof(root)); -+ - get_document_root(conn, &root); - - addenv(blk, "SERVER_NAME=%s", conn->ctx->config[AUTHENTICATION_DOMAIN]); -@@ -2916,6 +2918,8 @@ static void handle_cgi_request(struct mg_connection *conn, const char *prog) { - FILE *in, *out; - pid_t pid; - -+ memset(&ri, 0, sizeof(ri)); -+ - prepare_cgi_environment(conn, prog, &blk); - - // CGI must be executed in its own directory. 'dir' must point to the - diff --git a/third_party/mongoose/mongoose.c b/third_party/mongoose/mongoose.c deleted file mode 100644 index 67ec9bd..0000000 --- a/third_party/mongoose/mongoose.c +++ /dev/null @@ -1,4264 +0,0 @@ -// Copyright (c) 2004-2011 Sergey Lyubka -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#if defined(_WIN32) -#define _CRT_SECURE_NO_WARNINGS // Disable deprecation warning in VS2005 -#else -#define _XOPEN_SOURCE 600 // For flockfile() on Linux -#define _LARGEFILE_SOURCE // Enable 64-bit file offsets -#ifndef __STDC_FORMAT_MACROS -#define __STDC_FORMAT_MACROS // <inttypes.h> wants this for C++ -#endif // __STDC_FORMAT_MACROS -#endif - -#if defined(__SYMBIAN32__) -#define NO_SSL // SSL is not supported -#define NO_CGI // CGI is not supported -#define PATH_MAX FILENAME_MAX -#endif // __SYMBIAN32__ - -#ifndef _WIN32_WCE // Some ANSI #includes are not available on Windows CE -#include <sys/types.h> -#include <sys/stat.h> -#include <errno.h> -#include <signal.h> -#include <fcntl.h> -#endif // !_WIN32_WCE - -#include <time.h> -#include <stdlib.h> -#include <stdarg.h> -#include <assert.h> -#include <string.h> -#include <ctype.h> -#include <limits.h> -#include <stddef.h> -#include <stdio.h> - -#if defined(_WIN32) && !defined(__SYMBIAN32__) // Windows specific - #ifdef _WIN32_WINNT - #undef _WIN32_WINNT - #endif -#define _WIN32_WINNT 0x0400 // To make it link in VS2005 -#include <windows.h> -#include <winsock2.h> - -#ifndef PATH_MAX -#define PATH_MAX MAX_PATH -#endif - -#ifndef _WIN32_WCE -#include <process.h> -#include <direct.h> -#include <io.h> -#else // _WIN32_WCE -#define NO_CGI // WinCE has no pipes - -typedef long off_t; -#define BUFSIZ 4096 - -#define errno GetLastError() -#define strerror(x) _ultoa(x, (char *) _alloca(sizeof(x) *3 ), 10) -#endif // _WIN32_WCE - -#define MAKEUQUAD(lo, hi) ((uint64_t)(((uint32_t)(lo)) | \ - ((uint64_t)((uint32_t)(hi))) << 32)) -#define RATE_DIFF 10000000 // 100 nsecs -#define EPOCH_DIFF MAKEUQUAD(0xd53e8000, 0x019db1de) -#define SYS2UNIX_TIME(lo, hi) \ - (time_t) ((MAKEUQUAD((lo), (hi)) - EPOCH_DIFF) / RATE_DIFF) - -// Visual Studio 6 does not know __func__ or __FUNCTION__ -// The rest of MS compilers use __FUNCTION__, not C99 __func__ -// Also use _strtoui64 on modern M$ compilers -#if defined(_MSC_VER) && _MSC_VER < 1300 -#define STRX(x) #x -#define STR(x) STRX(x) -#define __func__ "line " STR(__LINE__) -#define strtoull(x, y, z) strtoul(x, y, z) -#define strtoll(x, y, z) strtol(x, y, z) -#else -#define __func__ __FUNCTION__ -#define strtoull(x, y, z) _strtoui64(x, y, z) -#define strtoll(x, y, z) _strtoi64(x, y, z) -#endif // _MSC_VER - -#define ERRNO GetLastError() -#define NO_SOCKLEN_T -#define SSL_LIB "ssleay32.dll" -#define CRYPTO_LIB "libeay32.dll" -#define DIRSEP '\\' -#define IS_DIRSEP_CHAR(c) ((c) == '/' || (c) == '\\') -#define O_NONBLOCK 0 -#if !defined(EWOULDBLOCK) -#define EWOULDBLOCK WSAEWOULDBLOCK -#endif // !EWOULDBLOCK -#define _POSIX_ -#define INT64_FMT "I64d" - -#define WINCDECL __cdecl -#define SHUT_WR 1 -#define snprintf _snprintf -#define vsnprintf _vsnprintf -#define sleep(x) Sleep((x) * 1000) - -#define pipe(x) _pipe(x, BUFSIZ, _O_BINARY) -#define popen(x, y) _popen(x, y) -#define pclose(x) _pclose(x) -#define close(x) _close(x) -#define dlsym(x,y) GetProcAddress((HINSTANCE) (x), (y)) -#define RTLD_LAZY 0 -#define fseeko(x, y, z) fseek((x), (y), (z)) -#define fdopen(x, y) _fdopen((x), (y)) -#define write(x, y, z) _write((x), (y), (unsigned) z) -#define read(x, y, z) _read((x), (y), (unsigned) z) -#define flockfile(x) (void) 0 -#define funlockfile(x) (void) 0 - -#if !defined(fileno) -#define fileno(x) _fileno(x) -#endif // !fileno MINGW #defines fileno - -typedef HANDLE pthread_mutex_t; -typedef struct {HANDLE signal, broadcast;} pthread_cond_t; -typedef DWORD pthread_t; -#define pid_t HANDLE // MINGW typedefs pid_t to int. Using #define here. - -struct timespec { - long tv_nsec; - long tv_sec; -}; - -static int pthread_mutex_lock(pthread_mutex_t *); -static int pthread_mutex_unlock(pthread_mutex_t *); -static FILE *mg_fopen(const char *path, const char *mode); - -#if defined(HAVE_STDINT) -#include <stdint.h> -#else -typedef unsigned int uint32_t; -typedef unsigned short uint16_t; -typedef unsigned __int64 uint64_t; -typedef __int64 int64_t; -#define INT64_MAX 9223372036854775807 -#endif // HAVE_STDINT - -// POSIX dirent interface -struct dirent { - char d_name[PATH_MAX]; -}; - -typedef struct DIR { - HANDLE handle; - WIN32_FIND_DATAW info; - struct dirent result; -} DIR; - -#else // UNIX specific -#include <sys/wait.h> -#include <sys/socket.h> -#include <sys/select.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <sys/time.h> -#include <stdint.h> -#include <inttypes.h> -#include <netdb.h> - -#include <pwd.h> -#include <unistd.h> -#include <dirent.h> -#if !defined(NO_SSL_DL) && !defined(NO_SSL) -#include <dlfcn.h> -#endif -#include <pthread.h> -#if defined(__MACH__) -#define SSL_LIB "libssl.dylib" -#define CRYPTO_LIB "libcrypto.dylib" -#else -#if !defined(SSL_LIB) -#define SSL_LIB "libssl.so" -#endif -#if !defined(CRYPTO_LIB) -#define CRYPTO_LIB "libcrypto.so" -#endif -#endif -#define DIRSEP '/' -#define IS_DIRSEP_CHAR(c) ((c) == '/') -#ifndef O_BINARY -#define O_BINARY 0 -#endif // O_BINARY -#define closesocket(a) close(a) -#define mg_fopen(x, y) fopen(x, y) -#define mg_mkdir(x, y) mkdir(x, y) -#define mg_remove(x) remove(x) -#define mg_rename(x, y) rename(x, y) -#define ERRNO errno -#define INVALID_SOCKET (-1) -#define INT64_FMT PRId64 -typedef int SOCKET; -#define WINCDECL - -#endif // End of Windows and UNIX specific includes - -#include "mongoose.h" - -#define MONGOOSE_VERSION "3.1" -#define PASSWORDS_FILE_NAME ".htpasswd" -#define CGI_ENVIRONMENT_SIZE 4096 -#define MAX_CGI_ENVIR_VARS 64 -#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0])) - -#ifdef _WIN32 -static pthread_t pthread_self(void) { - return GetCurrentThreadId(); -} -#endif // _WIN32 - -#if defined(DEBUG) -#define DEBUG_TRACE(x) do { \ - flockfile(stdout); \ - printf("*** %lu.%p.%s.%d: ", \ - (unsigned long) time(NULL), (void *) pthread_self(), \ - __func__, __LINE__); \ - printf x; \ - putchar('\n'); \ - fflush(stdout); \ - funlockfile(stdout); \ -} while (0) -#else -#define DEBUG_TRACE(x) -#endif // DEBUG - -// Darwin prior to 7.0 and Win32 do not have socklen_t -#ifdef NO_SOCKLEN_T -typedef int socklen_t; -#endif // NO_SOCKLEN_T - -typedef void * (*mg_thread_func_t)(void *); - -static const char *http_500_error = "Internal Server Error"; - -// Snatched from OpenSSL includes. I put the prototypes here to be independent -// from the OpenSSL source installation. Having this, mongoose + SSL can be -// built on any system with binary SSL libraries installed. -typedef struct ssl_st SSL; -typedef struct ssl_method_st SSL_METHOD; -typedef struct ssl_ctx_st SSL_CTX; - -#define SSL_ERROR_WANT_READ 2 -#define SSL_ERROR_WANT_WRITE 3 -#define SSL_FILETYPE_PEM 1 -#define CRYPTO_LOCK 1 - -#if defined(NO_SSL_DL) -extern void SSL_free(SSL *); -extern int SSL_accept(SSL *); -extern int SSL_connect(SSL *); -extern int SSL_read(SSL *, void *, int); -extern int SSL_write(SSL *, const void *, int); -extern int SSL_get_error(const SSL *, int); -extern int SSL_set_fd(SSL *, int); -extern SSL *SSL_new(SSL_CTX *); -extern SSL_CTX *SSL_CTX_new(SSL_METHOD *); -extern SSL_METHOD *SSLv23_server_method(void); -extern int SSL_library_init(void); -extern void SSL_load_error_strings(void); -extern int SSL_CTX_use_PrivateKey_file(SSL_CTX *, const char *, int); -extern int SSL_CTX_use_certificate_file(SSL_CTX *, const char *, int); -extern int SSL_CTX_use_certificate_chain_file(SSL_CTX *, const char *); -extern void SSL_CTX_set_default_passwd_cb(SSL_CTX *, mg_callback_t); -extern void SSL_CTX_free(SSL_CTX *); -extern unsigned long ERR_get_error(void); -extern char *ERR_error_string(unsigned long, char *); -extern int CRYPTO_num_locks(void); -extern void CRYPTO_set_locking_callback(void (*)(int, int, const char *, int)); -extern void CRYPTO_set_id_callback(unsigned long (*)(void)); -#else -// Dynamically loaded SSL functionality -struct ssl_func { - const char *name; // SSL function name - void (*ptr)(void); // Function pointer -}; - -#define SSL_free (* (void (*)(SSL *)) ssl_sw[0].ptr) -#define SSL_accept (* (int (*)(SSL *)) ssl_sw[1].ptr) -#define SSL_connect (* (int (*)(SSL *)) ssl_sw[2].ptr) -#define SSL_read (* (int (*)(SSL *, void *, int)) ssl_sw[3].ptr) -#define SSL_write (* (int (*)(SSL *, const void *,int)) ssl_sw[4].ptr) -#define SSL_get_error (* (int (*)(SSL *, int)) ssl_sw[5].ptr) -#define SSL_set_fd (* (int (*)(SSL *, SOCKET)) ssl_sw[6].ptr) -#define SSL_new (* (SSL * (*)(SSL_CTX *)) ssl_sw[7].ptr) -#define SSL_CTX_new (* (SSL_CTX * (*)(SSL_METHOD *)) ssl_sw[8].ptr) -#define SSLv23_server_method (* (SSL_METHOD * (*)(void)) ssl_sw[9].ptr) -#define SSL_library_init (* (int (*)(void)) ssl_sw[10].ptr) -#define SSL_CTX_use_PrivateKey_file (* (int (*)(SSL_CTX *, \ - const char *, int)) ssl_sw[11].ptr) -#define SSL_CTX_use_certificate_file (* (int (*)(SSL_CTX *, \ - const char *, int)) ssl_sw[12].ptr) -#define SSL_CTX_set_default_passwd_cb \ - (* (void (*)(SSL_CTX *, mg_callback_t)) ssl_sw[13].ptr) -#define SSL_CTX_free (* (void (*)(SSL_CTX *)) ssl_sw[14].ptr) -#define SSL_load_error_strings (* (void (*)(void)) ssl_sw[15].ptr) -#define SSL_CTX_use_certificate_chain_file \ - (* (int (*)(SSL_CTX *, const char *)) ssl_sw[16].ptr) - -#define CRYPTO_num_locks (* (int (*)(void)) crypto_sw[0].ptr) -#define CRYPTO_set_locking_callback \ - (* (void (*)(void (*)(int, int, const char *, int))) crypto_sw[1].ptr) -#define CRYPTO_set_id_callback \ - (* (void (*)(unsigned long (*)(void))) crypto_sw[2].ptr) -#define ERR_get_error (* (unsigned long (*)(void)) crypto_sw[3].ptr) -#define ERR_error_string (* (char * (*)(unsigned long,char *)) crypto_sw[4].ptr) - -// set_ssl_option() function updates this array. -// It loads SSL library dynamically and changes NULLs to the actual addresses -// of respective functions. The macros above (like SSL_connect()) are really -// just calling these functions indirectly via the pointer. -static struct ssl_func ssl_sw[] = { - {"SSL_free", NULL}, - {"SSL_accept", NULL}, - {"SSL_connect", NULL}, - {"SSL_read", NULL}, - {"SSL_write", NULL}, - {"SSL_get_error", NULL}, - {"SSL_set_fd", NULL}, - {"SSL_new", NULL}, - {"SSL_CTX_new", NULL}, - {"SSLv23_server_method", NULL}, - {"SSL_library_init", NULL}, - {"SSL_CTX_use_PrivateKey_file", NULL}, - {"SSL_CTX_use_certificate_file",NULL}, - {"SSL_CTX_set_default_passwd_cb",NULL}, - {"SSL_CTX_free", NULL}, - {"SSL_load_error_strings", NULL}, - {"SSL_CTX_use_certificate_chain_file", NULL}, - {NULL, NULL} -}; - -// Similar array as ssl_sw. These functions could be located in different lib. -static struct ssl_func crypto_sw[] = { - {"CRYPTO_num_locks", NULL}, - {"CRYPTO_set_locking_callback", NULL}, - {"CRYPTO_set_id_callback", NULL}, - {"ERR_get_error", NULL}, - {"ERR_error_string", NULL}, - {NULL, NULL} -}; -#endif // NO_SSL_DL - -static const char *month_names[] = { - "Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" -}; - -// Unified socket address. For IPv6 support, add IPv6 address structure -// in the union u. -struct usa { - socklen_t len; - union { - struct sockaddr sa; - struct sockaddr_in sin; - } u; -}; - -// Describes a string (chunk of memory). -struct vec { - const char *ptr; - size_t len; -}; - -// Structure used by mg_stat() function. Uses 64 bit file length. -struct mgstat { - int is_directory; // Directory marker - int64_t size; // File size - time_t mtime; // Modification time -}; - -// Describes listening socket, or socket which was accept()-ed by the master -// thread and queued for future handling by the worker thread. -struct socket { - struct socket *next; // Linkage - SOCKET sock; // Listening socket - struct usa lsa; // Local socket address - struct usa rsa; // Remote socket address - int is_ssl; // Is socket SSL-ed - int is_proxy; -}; - -enum { - CGI_EXTENSIONS, CGI_ENVIRONMENT, PUT_DELETE_PASSWORDS_FILE, CGI_INTERPRETER, - PROTECT_URI, AUTHENTICATION_DOMAIN, SSI_EXTENSIONS, ACCESS_LOG_FILE, - SSL_CHAIN_FILE, ENABLE_DIRECTORY_LISTING, ERROR_LOG_FILE, - GLOBAL_PASSWORDS_FILE, INDEX_FILES, - ENABLE_KEEP_ALIVE, ACCESS_CONTROL_LIST, MAX_REQUEST_SIZE, - EXTRA_MIME_TYPES, LISTENING_PORTS, - DOCUMENT_ROOT, SSL_CERTIFICATE, NUM_THREADS, RUN_AS_USER, - NUM_OPTIONS -}; - -static const char *config_options[] = { - "C", "cgi_extensions", ".cgi,.pl,.php", - "E", "cgi_environment", NULL, - "G", "put_delete_passwords_file", NULL, - "I", "cgi_interpreter", NULL, - "P", "protect_uri", NULL, - "R", "authentication_domain", "mydomain.com", - "S", "ssi_extensions", ".shtml,.shtm", - "a", "access_log_file", NULL, - "c", "ssl_chain_file", NULL, - "d", "enable_directory_listing", "yes", - "e", "error_log_file", NULL, - "g", "global_passwords_file", NULL, - "i", "index_files", "index.html,index.htm,index.cgi", - "k", "enable_keep_alive", "no", - "l", "access_control_list", NULL, - "M", "max_request_size", "16384", - "m", "extra_mime_types", NULL, - "p", "listening_ports", "8080", - "r", "document_root", ".", - "s", "ssl_certificate", NULL, - "t", "num_threads", "10", - "u", "run_as_user", NULL, - NULL -}; -#define ENTRIES_PER_CONFIG_OPTION 3 - -struct mg_context { - volatile int stop_flag; // Should we stop event loop - SSL_CTX *ssl_ctx; // SSL context - char *config[NUM_OPTIONS]; // Mongoose configuration parameters - mg_callback_t user_callback; // User-defined callback function - void *user_data; // User-defined data - - struct socket *listening_sockets; - - volatile int num_threads; // Number of threads - pthread_mutex_t mutex; // Protects (max|num)_threads - pthread_cond_t cond; // Condvar for tracking workers terminations - - struct socket queue[20]; // Accepted sockets - volatile int sq_head; // Head of the socket queue - volatile int sq_tail; // Tail of the socket queue - pthread_cond_t sq_full; // Singaled when socket is produced - pthread_cond_t sq_empty; // Signaled when socket is consumed -}; - -struct mg_connection { - struct mg_connection *peer; // Remote target in proxy mode - struct mg_request_info request_info; - struct mg_context *ctx; - SSL *ssl; // SSL descriptor - struct socket client; // Connected client - time_t birth_time; // Time connection was accepted - int64_t num_bytes_sent; // Total bytes sent to client - int64_t content_len; // Content-Length header value - int64_t consumed_content; // How many bytes of content is already read - char *buf; // Buffer for received data - int buf_size; // Buffer size - int request_len; // Size of the request + headers in a buffer - int data_len; // Total size of data in a buffer -}; - -const char **mg_get_valid_option_names(void) { - return config_options; -} - -static void *call_user(struct mg_connection *conn, enum mg_event event) { - conn->request_info.user_data = conn->ctx->user_data; - return conn->ctx->user_callback == NULL ? NULL : - conn->ctx->user_callback(event, conn, &conn->request_info); -} - -static int get_option_index(const char *name) { - int i; - - for (i = 0; config_options[i] != NULL; i += ENTRIES_PER_CONFIG_OPTION) { - if (strcmp(config_options[i], name) == 0 || - strcmp(config_options[i + 1], name) == 0) { - return i / ENTRIES_PER_CONFIG_OPTION; - } - } - return -1; -} - -const char *mg_get_option(const struct mg_context *ctx, const char *name) { - int i; - if ((i = get_option_index(name)) == -1) { - return NULL; - } else if (ctx->config[i] == NULL) { - return ""; - } else { - return ctx->config[i]; - } -} - -// Print error message to the opened error log stream. -static void cry(struct mg_connection *conn, const char *fmt, ...) { - char buf[BUFSIZ]; - va_list ap; - FILE *fp; - time_t timestamp; - - va_start(ap, fmt); - (void) vsnprintf(buf, sizeof(buf), fmt, ap); - va_end(ap); - - // Do not lock when getting the callback value, here and below. - // I suppose this is fine, since function cannot disappear in the - // same way string option can. - conn->request_info.log_message = buf; - if (call_user(conn, MG_EVENT_LOG) == NULL) { - fp = conn->ctx->config[ERROR_LOG_FILE] == NULL ? NULL : - mg_fopen(conn->ctx->config[ERROR_LOG_FILE], "a+"); - - if (fp != NULL) { - flockfile(fp); - timestamp = time(NULL); - - (void) fprintf(fp, - "[%010lu] [error] [client %s] ", - (unsigned long) timestamp, - inet_ntoa(conn->client.rsa.u.sin.sin_addr)); - - if (conn->request_info.request_method != NULL) { - (void) fprintf(fp, "%s %s: ", - conn->request_info.request_method, - conn->request_info.uri); - } - - (void) fprintf(fp, "%s", buf); - fputc('\n', fp); - funlockfile(fp); - if (fp != stderr) { - fclose(fp); - } - } - } - conn->request_info.log_message = NULL; -} - -// Return OpenSSL error message -static const char *ssl_error(void) { - unsigned long err; - err = ERR_get_error(); - return err == 0 ? "" : ERR_error_string(err, NULL); -} - -// Return fake connection structure. Used for logging, if connection -// is not applicable at the moment of logging. -static struct mg_connection *fc(struct mg_context *ctx) { - static struct mg_connection fake_connection; - fake_connection.ctx = ctx; - return &fake_connection; -} - -const char *mg_version(void) { - return MONGOOSE_VERSION; -} - -static void mg_strlcpy(register char *dst, register const char *src, size_t n) { - for (; *src != '\0' && n > 1; n--) { - *dst++ = *src++; - } - *dst = '\0'; -} - -static int lowercase(const char *s) { - return tolower(* (const unsigned char *) s); -} - -static int mg_strncasecmp(const char *s1, const char *s2, size_t len) { - int diff = 0; - - if (len > 0) - do { - diff = lowercase(s1++) - lowercase(s2++); - } while (diff == 0 && s1[-1] != '\0' && --len > 0); - - return diff; -} - -static int mg_strcasecmp(const char *s1, const char *s2) { - int diff; - - do { - diff = lowercase(s1++) - lowercase(s2++); - } while (diff == 0 && s1[-1] != '\0'); - - return diff; -} - -static char * mg_strndup(const char *ptr, size_t len) { - char *p; - - if ((p = (char *) malloc(len + 1)) != NULL) { - mg_strlcpy(p, ptr, len + 1); - } - - return p; -} - -static char * mg_strdup(const char *str) { - return mg_strndup(str, strlen(str)); -} - -// Like snprintf(), but never returns negative value, or the value -// that is larger than a supplied buffer. -// Thanks to Adam Zeldis to pointing snprintf()-caused vulnerability -// in his audit report. -static int mg_vsnprintf(struct mg_connection *conn, char *buf, size_t buflen, - const char *fmt, va_list ap) { - int n; - - if (buflen == 0) - return 0; - - n = vsnprintf(buf, buflen, fmt, ap); - - if (n < 0) { - cry(conn, "vsnprintf error"); - n = 0; - } else if (n >= (int) buflen) { - cry(conn, "truncating vsnprintf buffer: [%.*s]", - n > 200 ? 200 : n, buf); - n = (int) buflen - 1; - } - buf[n] = '\0'; - - return n; -} - -static int mg_snprintf(struct mg_connection *conn, char *buf, size_t buflen, - const char *fmt, ...) { - va_list ap; - int n; - - va_start(ap, fmt); - n = mg_vsnprintf(conn, buf, buflen, fmt, ap); - va_end(ap); - - return n; -} - -// Skip the characters until one of the delimiters characters found. -// 0-terminate resulting word. Skip the delimiter and following whitespaces if any. -// Advance pointer to buffer to the next word. Return found 0-terminated word. -// Delimiters can be quoted with quotechar. -static char *skip_quoted(char **buf, const char *delimiters, const char *whitespace, char quotechar) { - char *p, *begin_word, *end_word, *end_whitespace; - - begin_word = *buf; - end_word = begin_word + strcspn(begin_word, delimiters); - - // Check for quotechar - if (end_word > begin_word) { - p = end_word - 1; - while (*p == quotechar) { - // If there is anything beyond end_word, copy it - if (*end_word == '\0') { - *p = '\0'; - break; - } else { - size_t end_off = strcspn(end_word + 1, delimiters); - memmove (p, end_word, end_off + 1); - p += end_off; // p must correspond to end_word - 1 - end_word += end_off + 1; - } - } - for (p++; p < end_word; p++) { - *p = '\0'; - } - } - - if (*end_word == '\0') { - *buf = end_word; - } else { - end_whitespace = end_word + 1 + strspn(end_word + 1, whitespace); - - for (p = end_word; p < end_whitespace; p++) { - *p = '\0'; - } - - *buf = end_whitespace; - } - - return begin_word; -} - -// Simplified version of skip_quoted without quote char -// and whitespace == delimiters -static char *skip(char **buf, const char *delimiters) { - return skip_quoted(buf, delimiters, delimiters, 0); -} - - -// Return HTTP header value, or NULL if not found. -static const char *get_header(const struct mg_request_info *ri, - const char *name) { - int i; - - for (i = 0; i < ri->num_headers; i++) - if (!mg_strcasecmp(name, ri->http_headers[i].name)) - return ri->http_headers[i].value; - - return NULL; -} - -const char *mg_get_header(const struct mg_connection *conn, const char *name) { - return get_header(&conn->request_info, name); -} - -// A helper function for traversing comma separated list of values. -// It returns a list pointer shifted to the next value, of NULL if the end -// of the list found. -// Value is stored in val vector. If value has form "x=y", then eq_val -// vector is initialized to point to the "y" part, and val vector length -// is adjusted to point only to "x". -static const char *next_option(const char *list, struct vec *val, - struct vec *eq_val) { - if (list == NULL || *list == '\0') { - // End of the list - list = NULL; - } else { - val->ptr = list; - if ((list = strchr(val->ptr, ',')) != NULL) { - // Comma found. Store length and shift the list ptr - val->len = list - val->ptr; - list++; - } else { - // This value is the last one - list = val->ptr + strlen(val->ptr); - val->len = list - val->ptr; - } - - if (eq_val != NULL) { - // Value has form "x=y", adjust pointers and lengths - // so that val points to "x", and eq_val points to "y". - eq_val->len = 0; - eq_val->ptr = (const char *) memchr(val->ptr, '=', val->len); - if (eq_val->ptr != NULL) { - eq_val->ptr++; // Skip over '=' character - eq_val->len = val->ptr + val->len - eq_val->ptr; - val->len = (eq_val->ptr - val->ptr) - 1; - } - } - } - - return list; -} - -static int match_extension(const char *path, const char *ext_list) { - struct vec ext_vec; - size_t path_len; - - path_len = strlen(path); - - while ((ext_list = next_option(ext_list, &ext_vec, NULL)) != NULL) - if (ext_vec.len < path_len && - mg_strncasecmp(path + path_len - ext_vec.len, - ext_vec.ptr, ext_vec.len) == 0) - return 1; - - return 0; -} - -// HTTP 1.1 assumes keep alive if "Connection:" header is not set -// This function must tolerate situations when connection info is not -// set up, for example if request parsing failed. -static int should_keep_alive(const struct mg_connection *conn) { - const char *http_version = conn->request_info.http_version; - const char *header = mg_get_header(conn, "Connection"); - return (header == NULL && http_version && !strcmp(http_version, "1.1")) || - (header != NULL && !mg_strcasecmp(header, "keep-alive")); -} - -static const char *suggest_connection_header(const struct mg_connection *conn) { - return should_keep_alive(conn) ? "keep-alive" : "close"; -} - -static void send_http_error(struct mg_connection *conn, int status, - const char *reason, const char *fmt, ...) { - char buf[BUFSIZ]; - va_list ap; - int len; - - conn->request_info.status_code = status; - - if (call_user(conn, MG_HTTP_ERROR) == NULL) { - buf[0] = '\0'; - len = 0; - - // Errors 1xx, 204 and 304 MUST NOT send a body - if (status > 199 && status != 204 && status != 304) { - len = mg_snprintf(conn, buf, sizeof(buf), "Error %d: %s", status, reason); - cry(conn, "%s", buf); - buf[len++] = '\n'; - - va_start(ap, fmt); - len += mg_vsnprintf(conn, buf + len, sizeof(buf) - len, fmt, ap); - va_end(ap); - } - DEBUG_TRACE(("[%s]", buf)); - - mg_printf(conn, "HTTP/1.1 %d %s\r\n" - "Content-Type: text/plain\r\n" - "Content-Length: %d\r\n" - "Connection: %s\r\n\r\n", status, reason, len, - suggest_connection_header(conn)); - conn->num_bytes_sent += mg_printf(conn, "%s", buf); - } -} - -#if defined(_WIN32) && !defined(__SYMBIAN32__) -static int pthread_mutex_init(pthread_mutex_t *mutex, void *unused) { - unused = NULL; - *mutex = CreateMutex(NULL, FALSE, NULL); - return *mutex == NULL ? -1 : 0; -} - -static int pthread_mutex_destroy(pthread_mutex_t *mutex) { - return CloseHandle(*mutex) == 0 ? -1 : 0; -} - -static int pthread_mutex_lock(pthread_mutex_t *mutex) { - return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1; -} - -static int pthread_mutex_unlock(pthread_mutex_t *mutex) { - return ReleaseMutex(*mutex) == 0 ? -1 : 0; -} - -static int pthread_cond_init(pthread_cond_t *cv, const void *unused) { - unused = NULL; - cv->signal = CreateEvent(NULL, FALSE, FALSE, NULL); - cv->broadcast = CreateEvent(NULL, TRUE, FALSE, NULL); - return cv->signal != NULL && cv->broadcast != NULL ? 0 : -1; -} - -static int pthread_cond_wait(pthread_cond_t *cv, pthread_mutex_t *mutex) { - HANDLE handles[2]; - handles[0] = cv->signal; - handles[1] = cv->broadcast; - ReleaseMutex(*mutex); - WaitForMultipleObjects(2, handles, FALSE, INFINITE); - return WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1; -} - -static int pthread_cond_signal(pthread_cond_t *cv) { - return SetEvent(cv->signal) == 0 ? -1 : 0; -} - -static int pthread_cond_broadcast(pthread_cond_t *cv) { - // Implementation with PulseEvent() has race condition, see - // http://www.cs.wustl.edu/~schmidt/win32-cv-1.html - return PulseEvent(cv->broadcast) == 0 ? -1 : 0; -} - -static int pthread_cond_destroy(pthread_cond_t *cv) { - return CloseHandle(cv->signal) && CloseHandle(cv->broadcast) ? 0 : -1; -} - -// For Windows, change all slashes to backslashes in path names. -static void change_slashes_to_backslashes(char *path) { - int i; - - for (i = 0; path[i] != '\0'; i++) { - if (path[i] == '/') - path[i] = '\\'; - // i > 0 check is to preserve UNC paths, like \\server\file.txt - if (path[i] == '\\' && i > 0) - while (path[i + 1] == '\\' || path[i + 1] == '/') - (void) memmove(path + i + 1, - path + i + 2, strlen(path + i + 1)); - } -} - -// Encode 'path' which is assumed UTF-8 string, into UNICODE string. -// wbuf and wbuf_len is a target buffer and its length. -static void to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len) { - char buf[PATH_MAX], buf2[PATH_MAX], *p; - - mg_strlcpy(buf, path, sizeof(buf)); - change_slashes_to_backslashes(buf); - - // Point p to the end of the file name - p = buf + strlen(buf) - 1; - - // Trim trailing backslash character - while (p > buf && *p == '\\' && p[-1] != ':') { - *p-- = '\0'; - } - - // Protect from CGI code disclosure. - // This is very nasty hole. Windows happily opens files with - // some garbage in the end of file name. So fopen("a.cgi ", "r") - // actually opens "a.cgi", and does not return an error! - if (*p == 0x20 || // No space at the end - (*p == 0x2e && p > buf) || // No '.' but allow '.' as full path - *p == 0x2b || // No '+' - (*p & ~0x7f)) { // And generally no non-ascii chars - (void) fprintf(stderr, "Rejecting suspicious path: [%s]", buf); - wbuf[0] = L'\0'; - } else { - // Convert to Unicode and back. If doubly-converted string does not - // match the original, something is fishy, reject. - MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, (int) wbuf_len); - WideCharToMultiByte(CP_UTF8, 0, wbuf, (int) wbuf_len, buf2, sizeof(buf2), - NULL, NULL); - if (strcmp(buf, buf2) != 0) { - wbuf[0] = L'\0'; - } - } -} - -#if defined(_WIN32_WCE) -static time_t time(time_t *ptime) { - time_t t; - SYSTEMTIME st; - FILETIME ft; - - GetSystemTime(&st); - SystemTimeToFileTime(&st, &ft); - t = SYS2UNIX_TIME(ft.dwLowDateTime, ft.dwHighDateTime); - - if (ptime != NULL) { - *ptime = t; - } - - return t; -} - -static struct tm *localtime(const time_t *ptime, struct tm *ptm) { - int64_t t = ((int64_t) *ptime) * RATE_DIFF + EPOCH_DIFF; - FILETIME ft, lft; - SYSTEMTIME st; - TIME_ZONE_INFORMATION tzinfo; - - if (ptm == NULL) { - return NULL; - } - - * (int64_t *) &ft = t; - FileTimeToLocalFileTime(&ft, &lft); - FileTimeToSystemTime(&lft, &st); - ptm->tm_year = st.wYear - 1900; - ptm->tm_mon = st.wMonth - 1; - ptm->tm_wday = st.wDayOfWeek; - ptm->tm_mday = st.wDay; - ptm->tm_hour = st.wHour; - ptm->tm_min = st.wMinute; - ptm->tm_sec = st.wSecond; - ptm->tm_yday = 0; // hope nobody uses this - ptm->tm_isdst = - GetTimeZoneInformation(&tzinfo) == TIME_ZONE_ID_DAYLIGHT ? 1 : 0; - - return ptm; -} - -static struct tm *gmtime(const time_t *ptime, struct tm *ptm) { - // FIXME(lsm): fix this. - return localtime(ptime, ptm); -} - -static size_t strftime(char *dst, size_t dst_size, const char *fmt, - const struct tm *tm) { - (void) snprintf(dst, dst_size, "implement strftime() for WinCE"); - return 0; -} -#endif - -static int mg_rename(const char* oldname, const char* newname) { - wchar_t woldbuf[PATH_MAX]; - wchar_t wnewbuf[PATH_MAX]; - - to_unicode(oldname, woldbuf, ARRAY_SIZE(woldbuf)); - to_unicode(newname, wnewbuf, ARRAY_SIZE(wnewbuf)); - - return MoveFileW(woldbuf, wnewbuf) ? 0 : -1; -} - - -static FILE *mg_fopen(const char *path, const char *mode) { - wchar_t wbuf[PATH_MAX], wmode[20]; - - to_unicode(path, wbuf, ARRAY_SIZE(wbuf)); - MultiByteToWideChar(CP_UTF8, 0, mode, -1, wmode, ARRAY_SIZE(wmode)); - - return _wfopen(wbuf, wmode); -} - -static int mg_stat(const char *path, struct mgstat *stp) { - int ok = -1; // Error - wchar_t wbuf[PATH_MAX]; - WIN32_FILE_ATTRIBUTE_DATA info; - - to_unicode(path, wbuf, ARRAY_SIZE(wbuf)); - - if (GetFileAttributesExW(wbuf, GetFileExInfoStandard, &info) != 0) { - stp->size = MAKEUQUAD(info.nFileSizeLow, info.nFileSizeHigh); - stp->mtime = SYS2UNIX_TIME(info.ftLastWriteTime.dwLowDateTime, - info.ftLastWriteTime.dwHighDateTime); - stp->is_directory = - info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY; - ok = 0; // Success - } - - return ok; -} - -static int mg_remove(const char *path) { - wchar_t wbuf[PATH_MAX]; - to_unicode(path, wbuf, ARRAY_SIZE(wbuf)); - return DeleteFileW(wbuf) ? 0 : -1; -} - -static int mg_mkdir(const char *path, int mode) { - char buf[PATH_MAX]; - wchar_t wbuf[PATH_MAX]; - - mode = 0; // Unused - mg_strlcpy(buf, path, sizeof(buf)); - change_slashes_to_backslashes(buf); - - (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, sizeof(wbuf)); - - return CreateDirectoryW(wbuf, NULL) ? 0 : -1; -} - -// Implementation of POSIX opendir/closedir/readdir for Windows. -static DIR * opendir(const char *name) { - DIR *dir = NULL; - wchar_t wpath[PATH_MAX]; - DWORD attrs; - - if (name == NULL) { - SetLastError(ERROR_BAD_ARGUMENTS); - } else if ((dir = (DIR *) malloc(sizeof(*dir))) == NULL) { - SetLastError(ERROR_NOT_ENOUGH_MEMORY); - } else { - to_unicode(name, wpath, ARRAY_SIZE(wpath)); - attrs = GetFileAttributesW(wpath); - if (attrs != 0xFFFFFFFF && - ((attrs & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY)) { - (void) wcscat(wpath, L"\\*"); - dir->handle = FindFirstFileW(wpath, &dir->info); - dir->result.d_name[0] = '\0'; - } else { - free(dir); - dir = NULL; - } - } - - return dir; -} - -static int closedir(DIR *dir) { - int result = 0; - - if (dir != NULL) { - if (dir->handle != INVALID_HANDLE_VALUE) - result = FindClose(dir->handle) ? 0 : -1; - - free(dir); - } else { - result = -1; - SetLastError(ERROR_BAD_ARGUMENTS); - } - - return result; -} - -struct dirent * readdir(DIR *dir) { - struct dirent *result = 0; - - if (dir) { - if (dir->handle != INVALID_HANDLE_VALUE) { - result = &dir->result; - (void) WideCharToMultiByte(CP_UTF8, 0, - dir->info.cFileName, -1, result->d_name, - sizeof(result->d_name), NULL, NULL); - - if (!FindNextFileW(dir->handle, &dir->info)) { - (void) FindClose(dir->handle); - dir->handle = INVALID_HANDLE_VALUE; - } - - } else { - SetLastError(ERROR_FILE_NOT_FOUND); - } - } else { - SetLastError(ERROR_BAD_ARGUMENTS); - } - - return result; -} - -#define set_close_on_exec(fd) // No FD_CLOEXEC on Windows - -static int start_thread(struct mg_context *ctx, mg_thread_func_t f, void *p) { - return _beginthread((void (__cdecl *)(void *)) f, 0, p) == -1L ? -1 : 0; -} - -static HANDLE dlopen(const char *dll_name, int flags) { - wchar_t wbuf[PATH_MAX]; - flags = 0; // Unused - to_unicode(dll_name, wbuf, ARRAY_SIZE(wbuf)); - return LoadLibraryW(wbuf); -} - -#if !defined(NO_CGI) -#define SIGKILL 0 -static int kill(pid_t pid, int sig_num) { - (void) TerminateProcess(pid, sig_num); - (void) CloseHandle(pid); - return 0; -} - -static pid_t spawn_process(struct mg_connection *conn, const char *prog, - char *envblk, char *envp[], int fd_stdin, - int fd_stdout, const char *dir) { - HANDLE me; - char *p, *interp, cmdline[PATH_MAX], buf[PATH_MAX]; - FILE *fp; - STARTUPINFOA si; - PROCESS_INFORMATION pi; - - envp = NULL; // Unused - - (void) memset(&si, 0, sizeof(si)); - (void) memset(&pi, 0, sizeof(pi)); - - // TODO(lsm): redirect CGI errors to the error log file - si.cb = sizeof(si); - si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; - si.wShowWindow = SW_HIDE; - - me = GetCurrentProcess(); - (void) DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdin), me, - &si.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS); - (void) DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdout), me, - &si.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS); - - // If CGI file is a script, try to read the interpreter line - interp = conn->ctx->config[CGI_INTERPRETER]; - if (interp == NULL) { - buf[2] = '\0'; - mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%c%s", dir, DIRSEP, prog); - if ((fp = fopen(cmdline, "r")) != NULL) { - (void) fgets(buf, sizeof(buf), fp); - if (buf[0] != '#' || buf[1] != '!') { - // First line does not start with "#!". Do not set interpreter. - buf[2] = '\0'; - } else { - // Trim whitespaces in interpreter name - for (p = &buf[strlen(buf) - 1]; p > buf && isspace(*p); p--) { - *p = '\0'; - } - } - (void) fclose(fp); - } - interp = buf + 2; - } - - (void) mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%s%s%c%s", - interp, interp[0] == '\0' ? "" : " ", dir, DIRSEP, prog); - - DEBUG_TRACE(("Running [%s]", cmdline)); - if (CreateProcessA(NULL, cmdline, NULL, NULL, TRUE, - CREATE_NEW_PROCESS_GROUP, envblk, dir, &si, &pi) == 0) { - cry(conn, "%s: CreateProcess(%s): %d", - __func__, cmdline, ERRNO); - pi.hProcess = (pid_t) -1; - } else { - (void) close(fd_stdin); - (void) close(fd_stdout); - } - - (void) CloseHandle(si.hStdOutput); - (void) CloseHandle(si.hStdInput); - (void) CloseHandle(pi.hThread); - - return (pid_t) pi.hProcess; -} -#endif // !NO_CGI - -static int set_non_blocking_mode(SOCKET sock) { - unsigned long on = 1; - return ioctlsocket(sock, FIONBIO, &on); -} - -#else -static int mg_stat(const char *path, struct mgstat *stp) { - struct stat st; - int ok; - - if (stat(path, &st) == 0) { - ok = 0; - stp->size = st.st_size; - stp->mtime = st.st_mtime; - stp->is_directory = S_ISDIR(st.st_mode); - } else { - ok = -1; - } - - return ok; -} - -static void set_close_on_exec(int fd) { - (void) fcntl(fd, F_SETFD, FD_CLOEXEC); -} - -static int start_thread(struct mg_context *ctx, mg_thread_func_t func, - void *param) { - pthread_t thread_id; - pthread_attr_t attr; - int retval; - - (void) pthread_attr_init(&attr); - (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); - // TODO(lsm): figure out why mongoose dies on Linux if next line is enabled - // (void) pthread_attr_setstacksize(&attr, sizeof(struct mg_connection) * 5); - - if ((retval = pthread_create(&thread_id, &attr, func, param)) != 0) { - cry(fc(ctx), "%s: %s", __func__, strerror(retval)); - } - - return retval; -} - -#ifndef NO_CGI -static pid_t spawn_process(struct mg_connection *conn, const char *prog, - char *envblk, char *envp[], int fd_stdin, - int fd_stdout, const char *dir) { - pid_t pid; - const char *interp; - - envblk = NULL; // Unused - - if ((pid = fork()) == -1) { - // Parent - send_http_error(conn, 500, http_500_error, "fork(): %s", strerror(ERRNO)); - } else if (pid == 0) { - // Child - if (chdir(dir) != 0) { - cry(conn, "%s: chdir(%s): %s", __func__, dir, strerror(ERRNO)); - } else if (dup2(fd_stdin, 0) == -1) { - cry(conn, "%s: dup2(%d, 0): %s", __func__, fd_stdin, strerror(ERRNO)); - } else if (dup2(fd_stdout, 1) == -1) { - cry(conn, "%s: dup2(%d, 1): %s", __func__, fd_stdout, strerror(ERRNO)); - } else { - (void) dup2(fd_stdout, 2); - (void) close(fd_stdin); - (void) close(fd_stdout); - - // Execute CGI program. No need to lock: new process - interp = conn->ctx->config[CGI_INTERPRETER]; - if (interp == NULL) { - (void) execle(prog, prog, NULL, envp); - cry(conn, "%s: execle(%s): %s", __func__, prog, strerror(ERRNO)); - } else { - (void) execle(interp, interp, prog, NULL, envp); - cry(conn, "%s: execle(%s %s): %s", __func__, interp, prog, - strerror(ERRNO)); - } - } - exit(EXIT_FAILURE); - } else { - // Parent. Close stdio descriptors - (void) close(fd_stdin); - (void) close(fd_stdout); - } - - return pid; -} -#endif // !NO_CGI - -static int set_non_blocking_mode(SOCKET sock) { - int flags; - - flags = fcntl(sock, F_GETFL, 0); - (void) fcntl(sock, F_SETFL, flags | O_NONBLOCK); - - return 0; -} -#endif // _WIN32 - -// Write data to the IO channel - opened file descriptor, socket or SSL -// descriptor. Return number of bytes written. -static int64_t push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf, - int64_t len) { - int64_t sent; - int n, k; - - sent = 0; - while (sent < len) { - - // How many bytes we send in this iteration - k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent); - - if (ssl != NULL) { - n = SSL_write(ssl, buf + sent, k); - } else if (fp != NULL) { - n = fwrite(buf + sent, 1, (size_t)k, fp); - if (ferror(fp)) - n = -1; - } else { - n = send(sock, buf + sent, (size_t)k, 0); - } - - if (n < 0) - break; - - sent += n; - } - - return sent; -} - -// Read from IO channel - opened file descriptor, socket, or SSL descriptor. -// Return number of bytes read. -static int pull(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int len) { - int nread; - - if (ssl != NULL) { - nread = SSL_read(ssl, buf, len); - } else if (fp != NULL) { - // Use read() instead of fread(), because if we're reading from the CGI - // pipe, fread() may block until IO buffer is filled up. We cannot afford - // to block and must pass all read bytes immediately to the client. - nread = read(fileno(fp), buf, (size_t) len); - if (ferror(fp)) - nread = -1; - } else { - nread = recv(sock, buf, (size_t) len, 0); - } - - return nread; -} - -int mg_read(struct mg_connection *conn, void *buf, size_t len) { - int n, buffered_len, nread; - const char *buffered; - - assert((conn->content_len == -1 && conn->consumed_content == 0) || - conn->consumed_content <= conn->content_len); - DEBUG_TRACE(("%p %zu %lld %lld", buf, len, - conn->content_len, conn->consumed_content)); - nread = 0; - if (conn->consumed_content < conn->content_len) { - - // Adjust number of bytes to read. - int64_t to_read = conn->content_len - conn->consumed_content; - if (to_read < (int64_t) len) { - len = (int) to_read; - } - - // How many bytes of data we have buffered in the request buffer? - buffered = conn->buf + conn->request_len + conn->consumed_content; - buffered_len = conn->data_len - conn->request_len; - assert(buffered_len >= 0); - - // Return buffered data back if we haven't done that yet. - if (conn->consumed_content < (int64_t) buffered_len) { - buffered_len -= (int) conn->consumed_content; - if (len < (size_t) buffered_len) { - buffered_len = len; - } - memcpy(buf, buffered, (size_t)buffered_len); - len -= buffered_len; - buf = (char *) buf + buffered_len; - conn->consumed_content += buffered_len; - nread = buffered_len; - } - - // We have returned all buffered data. Read new data from the remote socket. - while (len > 0) { - n = pull(NULL, conn->client.sock, conn->ssl, (char *) buf, (int) len); - if (n <= 0) { - break; - } - buf = (char *) buf + n; - conn->consumed_content += n; - nread += n; - len -= n; - } - } - return nread; -} - -int mg_write(struct mg_connection *conn, const void *buf, size_t len) { - return (int) push(NULL, conn->client.sock, conn->ssl, - (const char *) buf, (int64_t) len); -} - -int mg_printf(struct mg_connection *conn, const char *fmt, ...) { - char buf[BUFSIZ]; - int len; - va_list ap; - - va_start(ap, fmt); - len = mg_vsnprintf(conn, buf, sizeof(buf), fmt, ap); - va_end(ap); - - return mg_write(conn, buf, (size_t)len); -} - -// URL-decode input buffer into destination buffer. -// 0-terminate the destination buffer. Return the length of decoded data. -// form-url-encoded data differs from URI encoding in a way that it -// uses '+' as character for space, see RFC 1866 section 8.2.1 -// http://ftp.ics.uci.edu/pub/ietf/html/rfc1866.txt -static size_t url_decode(const char *src, size_t src_len, char *dst, - size_t dst_len, int is_form_url_encoded) { - size_t i, j; - int a, b; -#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W') - - for (i = j = 0; i < src_len && j < dst_len - 1; i++, j++) { - if (src[i] == '%' && - isxdigit(* (const unsigned char *) (src + i + 1)) && - isxdigit(* (const unsigned char *) (src + i + 2))) { - a = tolower(* (const unsigned char *) (src + i + 1)); - b = tolower(* (const unsigned char *) (src + i + 2)); - dst[j] = (char) ((HEXTOI(a) << 4) | HEXTOI(b)); - i += 2; - } else if (is_form_url_encoded && src[i] == '+') { - dst[j] = ' '; - } else { - dst[j] = src[i]; - } - } - - dst[j] = '\0'; // Null-terminate the destination - - return j; -} - -// Scan given buffer and fetch the value of the given variable. -// It can be specified in query string, or in the POST data. -// Return NULL if the variable not found, or allocated 0-terminated value. -// It is caller's responsibility to free the returned value. -int mg_get_var(const char *buf, size_t buf_len, const char *name, - char *dst, size_t dst_len) { - const char *p, *e, *s; - size_t name_len, len; - - name_len = strlen(name); - e = buf + buf_len; - len = -1; - dst[0] = '\0'; - - // buf is "var1=val1&var2=val2...". Find variable first - for (p = buf; p != NULL && p + name_len < e; p++) { - if ((p == buf || p[-1] == '&') && p[name_len] == '=' && - !mg_strncasecmp(name, p, name_len)) { - - // Point p to variable value - p += name_len + 1; - - // Point s to the end of the value - s = (const char *) memchr(p, '&', (size_t)(e - p)); - if (s == NULL) { - s = e; - } - assert(s >= p); - - // Decode variable into destination buffer - if ((size_t) (s - p) < dst_len) { - len = url_decode(p, (size_t)(s - p), dst, dst_len, 1); - } - break; - } - } - - return len; -} - -int mg_get_cookie(const struct mg_connection *conn, const char *cookie_name, - char *dst, size_t dst_size) { - const char *s, *p, *end; - int name_len, len = -1; - - dst[0] = '\0'; - if ((s = mg_get_header(conn, "Cookie")) == NULL) { - return 0; - } - - name_len = strlen(cookie_name); - end = s + strlen(s); - - for (; (s = strstr(s, cookie_name)) != NULL; s += name_len) - if (s[name_len] == '=') { - s += name_len + 1; - if ((p = strchr(s, ' ')) == NULL) - p = end; - if (p[-1] == ';') - p--; - if (*s == '"' && p[-1] == '"' && p > s + 1) { - s++; - p--; - } - if ((size_t) (p - s) < dst_size) { - len = (p - s) + 1; - mg_strlcpy(dst, s, (size_t)len); - } - break; - } - - return len; -} - -// Mongoose allows to specify multiple directories to serve, -// like /var/www,/~bob=/home/bob. That means that root directory depends on URI. -// This function returns root dir for given URI. -static int get_document_root(const struct mg_connection *conn, - struct vec *document_root) { - const char *root, *uri; - int len_of_matched_uri; - struct vec uri_vec, path_vec; - - uri = conn->request_info.uri; - len_of_matched_uri = 0; - root = next_option(conn->ctx->config[DOCUMENT_ROOT], document_root, NULL); - - while ((root = next_option(root, &uri_vec, &path_vec)) != NULL) { - if (memcmp(uri, uri_vec.ptr, uri_vec.len) == 0) { - *document_root = path_vec; - len_of_matched_uri = uri_vec.len; - break; - } - } - - return len_of_matched_uri; -} - -static void convert_uri_to_file_name(struct mg_connection *conn, - const char *uri, char *buf, - size_t buf_len) { - struct vec vec; - int match_len; - - match_len = get_document_root(conn, &vec); - mg_snprintf(conn, buf, buf_len, "%.*s%s", vec.len, vec.ptr, uri + match_len); - -#if defined(_WIN32) && !defined(__SYMBIAN32__) - change_slashes_to_backslashes(buf); -#endif // _WIN32 - - DEBUG_TRACE(("[%s] -> [%s], [%.*s]", uri, buf, (int) vec.len, vec.ptr)); -} - -static int sslize(struct mg_connection *conn, int (*func)(SSL *)) { - return (conn->ssl = SSL_new(conn->ctx->ssl_ctx)) != NULL && - SSL_set_fd(conn->ssl, conn->client.sock) == 1 && - func(conn->ssl) == 1; -} - -static struct mg_connection *mg_connect(struct mg_connection *conn, - const char *host, int port, int use_ssl) { - struct mg_connection *newconn = NULL; - struct sockaddr_in sin; - struct hostent *he; - int sock; - - if (conn->ctx->ssl_ctx == NULL && use_ssl) { - cry(conn, "%s: SSL is not initialized", __func__); - } else if ((he = gethostbyname(host)) == NULL) { - cry(conn, "%s: gethostbyname(%s): %s", __func__, host, strerror(ERRNO)); - } else if ((sock = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET) { - cry(conn, "%s: socket: %s", __func__, strerror(ERRNO)); - } else { - sin.sin_family = AF_INET; - sin.sin_port = htons((uint16_t) port); - sin.sin_addr = * (struct in_addr *) he->h_addr_list[0]; - if (connect(sock, (struct sockaddr *) &sin, sizeof(sin)) != 0) { - cry(conn, "%s: connect(%s:%d): %s", __func__, host, port, - strerror(ERRNO)); - closesocket(sock); - } else if ((newconn = (struct mg_connection *) - calloc(1, sizeof(*newconn))) == NULL) { - cry(conn, "%s: calloc: %s", __func__, strerror(ERRNO)); - closesocket(sock); - } else { - newconn->client.sock = sock; - newconn->client.rsa.u.sin = sin; - if (use_ssl) { - sslize(newconn, SSL_connect); - } - } - } - - return newconn; -} - -// Check whether full request is buffered. Return: -// -1 if request is malformed -// 0 if request is not yet fully buffered -// >0 actual request length, including last \r\n\r\n -static int get_request_len(const char *buf, int buflen) { - const char *s, *e; - int len = 0; - - DEBUG_TRACE(("buf: %p, len: %d", buf, buflen)); - for (s = buf, e = s + buflen - 1; len <= 0 && s < e; s++) - // Control characters are not allowed but >=128 is. - if (!isprint(* (const unsigned char *) s) && *s != '\r' && - *s != '\n' && * (const unsigned char *) s < 128) { - len = -1; - } else if (s[0] == '\n' && s[1] == '\n') { - len = (int) (s - buf) + 2; - } else if (s[0] == '\n' && &s[1] < e && - s[1] == '\r' && s[2] == '\n') { - len = (int) (s - buf) + 3; - } - - return len; -} - -// Convert month to the month number. Return -1 on error, or month number -static int get_month_index(const char *s) { - size_t i; - - for (i = 0; i < ARRAY_SIZE(month_names); i++) - if (!strcmp(s, month_names[i])) - return (int) i; - - return -1; -} - -// Parse UTC date-time string, and return the corresponding time_t value. -static time_t parse_date_string(const char *datetime) { - static const unsigned short days_before_month[] = { - 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 - }; - char month_str[32]; - int second, minute, hour, day, month, year, leap_days, days; - time_t result = (time_t) 0; - - if (((sscanf(datetime, "%d/%3s/%d %d:%d:%d", - &day, month_str, &year, &hour, &minute, &second) == 6) || - (sscanf(datetime, "%d %3s %d %d:%d:%d", - &day, month_str, &year, &hour, &minute, &second) == 6) || - (sscanf(datetime, "%*3s, %d %3s %d %d:%d:%d", - &day, month_str, &year, &hour, &minute, &second) == 6) || - (sscanf(datetime, "%d-%3s-%d %d:%d:%d", - &day, month_str, &year, &hour, &minute, &second) == 6)) && - year > 1970 && - (month = get_month_index(month_str)) != -1) { - year -= 1970; - leap_days = year / 4 - year / 100 + year / 400; - days = year * 365 + days_before_month[month] + (day - 1) + leap_days; - result = days * 24 * 3600 + hour * 3600 + minute * 60 + second; - } - - return result; -} - -// Protect against directory disclosure attack by removing '..', -// excessive '/' and '\' characters -static void remove_double_dots_and_double_slashes(char *s) { - char *p = s; - - while (*s != '\0') { - *p++ = *s++; - if (s[-1] == '/' || s[-1] == '\\') { - // Skip all following slashes and backslashes - while (*s == '/' || *s == '\\') { - s++; - } - - // Skip all double-dots - while (*s == '.' && s[1] == '.') { - s += 2; - } - } - } - *p = '\0'; -} - -static const struct { - const char *extension; - size_t ext_len; - const char *mime_type; - size_t mime_type_len; -} builtin_mime_types[] = { - {".html", 5, "text/html", 9}, - {".htm", 4, "text/html", 9}, - {".shtm", 5, "text/html", 9}, - {".shtml", 6, "text/html", 9}, - {".css", 4, "text/css", 8}, - {".js", 3, "application/x-javascript", 24}, - {".ico", 4, "image/x-icon", 12}, - {".gif", 4, "image/gif", 9}, - {".jpg", 4, "image/jpeg", 10}, - {".jpeg", 5, "image/jpeg", 10}, - {".png", 4, "image/png", 9}, - {".svg", 4, "image/svg+xml", 13}, - {".torrent", 8, "application/x-bittorrent", 24}, - {".wav", 4, "audio/x-wav", 11}, - {".mp3", 4, "audio/x-mp3", 11}, - {".mid", 4, "audio/mid", 9}, - {".m3u", 4, "audio/x-mpegurl", 15}, - {".ram", 4, "audio/x-pn-realaudio", 20}, - {".xml", 4, "text/xml", 8}, - {".xslt", 5, "application/xml", 15}, - {".ra", 3, "audio/x-pn-realaudio", 20}, - {".doc", 4, "application/msword", 19}, - {".exe", 4, "application/octet-stream", 24}, - {".zip", 4, "application/x-zip-compressed", 28}, - {".xls", 4, "application/excel", 17}, - {".tgz", 4, "application/x-tar-gz", 20}, - {".tar", 4, "application/x-tar", 17}, - {".gz", 3, "application/x-gunzip", 20}, - {".arj", 4, "application/x-arj-compressed", 28}, - {".rar", 4, "application/x-arj-compressed", 28}, - {".rtf", 4, "application/rtf", 15}, - {".pdf", 4, "application/pdf", 15}, - {".swf", 4, "application/x-shockwave-flash",29}, - {".mpg", 4, "video/mpeg", 10}, - {".mpeg", 5, "video/mpeg", 10}, - {".mp4", 4, "video/mp4", 9}, - {".m4v", 4, "video/x-m4v", 11}, - {".asf", 4, "video/x-ms-asf", 14}, - {".avi", 4, "video/x-msvideo", 15}, - {".bmp", 4, "image/bmp", 9}, - {NULL, 0, NULL, 0} -}; - -// Look at the "path" extension and figure what mime type it has. -// Store mime type in the vector. -static void get_mime_type(struct mg_context *ctx, const char *path, - struct vec *vec) { - struct vec ext_vec, mime_vec; - const char *list, *ext; - size_t i, path_len; - - path_len = strlen(path); - - // Scan user-defined mime types first, in case user wants to - // override default mime types. - list = ctx->config[EXTRA_MIME_TYPES]; - while ((list = next_option(list, &ext_vec, &mime_vec)) != NULL) { - // ext now points to the path suffix - ext = path + path_len - ext_vec.len; - if (mg_strncasecmp(ext, ext_vec.ptr, ext_vec.len) == 0) { - *vec = mime_vec; - return; - } - } - - // Now scan built-in mime types - for (i = 0; builtin_mime_types[i].extension != NULL; i++) { - ext = path + (path_len - builtin_mime_types[i].ext_len); - if (path_len > builtin_mime_types[i].ext_len && - mg_strcasecmp(ext, builtin_mime_types[i].extension) == 0) { - vec->ptr = builtin_mime_types[i].mime_type; - vec->len = builtin_mime_types[i].mime_type_len; - return; - } - } - - // Nothing found. Fall back to "text/plain" - vec->ptr = "text/plain"; - vec->len = 10; -} - -#ifndef HAVE_MD5 -typedef struct MD5Context { - uint32_t buf[4]; - uint32_t bits[2]; - unsigned char in[64]; -} MD5_CTX; - -#if defined(__BYTE_ORDER) && (__BYTE_ORDER == 1234) -#define byteReverse(buf, len) // Do nothing -#else -static void byteReverse(unsigned char *buf, unsigned longs) { - uint32_t t; - do { - t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 | - ((unsigned) buf[1] << 8 | buf[0]); - *(uint32_t *) buf = t; - buf += 4; - } while (--longs); -} -#endif - -#define F1(x, y, z) (z ^ (x & (y ^ z))) -#define F2(x, y, z) F1(z, x, y) -#define F3(x, y, z) (x ^ y ^ z) -#define F4(x, y, z) (y ^ (x | ~z)) - -#define MD5STEP(f, w, x, y, z, data, s) \ - ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) - -// Start MD5 accumulation. Set bit count to 0 and buffer to mysterious -// initialization constants. -static void MD5Init(MD5_CTX *ctx) { - ctx->buf[0] = 0x67452301; - ctx->buf[1] = 0xefcdab89; - ctx->buf[2] = 0x98badcfe; - ctx->buf[3] = 0x10325476; - - ctx->bits[0] = 0; - ctx->bits[1] = 0; -} - -static void MD5Transform(uint32_t buf[4], uint32_t const in[16]) { - register uint32_t a, b, c, d; - - a = buf[0]; - b = buf[1]; - c = buf[2]; - d = buf[3]; - - MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); - MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); - MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); - MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); - MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); - MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); - MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); - MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); - MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); - MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); - MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); - MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); - MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); - MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); - MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); - MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); - - MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); - MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); - MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); - MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); - MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); - MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); - MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); - MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); - MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); - MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); - MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); - MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); - MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); - MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); - MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); - MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); - - MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); - MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); - MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); - MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); - MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); - MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); - MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); - MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); - MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); - MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); - MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); - MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); - MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); - MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); - MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); - MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); - - MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); - MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); - MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); - MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); - MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); - MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); - MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); - MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); - MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); - MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); - MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); - MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); - MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); - MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); - MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); - MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); - - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; -} - -static void MD5Update(MD5_CTX *ctx, unsigned char const *buf, unsigned len) { - uint32_t t; - - t = ctx->bits[0]; - if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t) - ctx->bits[1]++; - ctx->bits[1] += len >> 29; - - t = (t >> 3) & 0x3f; - - if (t) { - unsigned char *p = (unsigned char *) ctx->in + t; - - t = 64 - t; - if (len < t) { - memcpy(p, buf, len); - return; - } - memcpy(p, buf, t); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - buf += t; - len -= t; - } - - while (len >= 64) { - memcpy(ctx->in, buf, 64); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - buf += 64; - len -= 64; - } - - memcpy(ctx->in, buf, len); -} - -static void MD5Final(unsigned char digest[16], MD5_CTX *ctx) { - unsigned count; - unsigned char *p; - - count = (ctx->bits[0] >> 3) & 0x3F; - - p = ctx->in + count; - *p++ = 0x80; - count = 64 - 1 - count; - if (count < 8) { - memset(p, 0, count); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - memset(ctx->in, 0, 56); - } else { - memset(p, 0, count - 8); - } - byteReverse(ctx->in, 14); - - ((uint32_t *) ctx->in)[14] = ctx->bits[0]; - ((uint32_t *) ctx->in)[15] = ctx->bits[1]; - - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - byteReverse((unsigned char *) ctx->buf, 4); - memcpy(digest, ctx->buf, 16); - memset((char *) ctx, 0, sizeof(*ctx)); -} -#endif // !HAVE_MD5 - -// Stringify binary data. Output buffer must be twice as big as input, -// because each byte takes 2 bytes in string representation -static void bin2str(char *to, const unsigned char *p, size_t len) { - static const char *hex = "0123456789abcdef"; - - for (; len--; p++) { - *to++ = hex[p[0] >> 4]; - *to++ = hex[p[0] & 0x0f]; - } - *to = '\0'; -} - -// Return stringified MD5 hash for list of vectors. Buffer must be 33 bytes. -void mg_md5(char *buf, ...) { - unsigned char hash[16]; - const char *p; - va_list ap; - MD5_CTX ctx; - - MD5Init(&ctx); - - va_start(ap, buf); - while ((p = va_arg(ap, const char *)) != NULL) { - MD5Update(&ctx, (const unsigned char *) p, (unsigned) strlen(p)); - } - va_end(ap); - - MD5Final(hash, &ctx); - bin2str(buf, hash, sizeof(hash)); -} - -// Check the user's password, return 1 if OK -static int check_password(const char *method, const char *ha1, const char *uri, - const char *nonce, const char *nc, const char *cnonce, - const char *qop, const char *response) { - char ha2[32 + 1], expected_response[32 + 1]; - - // Some of the parameters may be NULL - if (method == NULL || nonce == NULL || nc == NULL || cnonce == NULL || - qop == NULL || response == NULL) { - return 0; - } - - // NOTE(lsm): due to a bug in MSIE, we do not compare the URI - // TODO(lsm): check for authentication timeout - if (// strcmp(dig->uri, c->ouri) != 0 || - strlen(response) != 32 - // || now - strtoul(dig->nonce, NULL, 10) > 3600 - ) { - return 0; - } - - mg_md5(ha2, method, ":", uri, NULL); - mg_md5(expected_response, ha1, ":", nonce, ":", nc, - ":", cnonce, ":", qop, ":", ha2, NULL); - - return mg_strcasecmp(response, expected_response) == 0; -} - -// Use the global passwords file, if specified by auth_gpass option, -// or search for .htpasswd in the requested directory. -static FILE *open_auth_file(struct mg_connection *conn, const char *path) { - struct mg_context *ctx = conn->ctx; - char name[PATH_MAX]; - const char *p, *e; - struct mgstat st; - FILE *fp; - - if (ctx->config[GLOBAL_PASSWORDS_FILE] != NULL) { - // Use global passwords file - fp = mg_fopen(ctx->config[GLOBAL_PASSWORDS_FILE], "r"); - if (fp == NULL) - cry(fc(ctx), "fopen(%s): %s", - ctx->config[GLOBAL_PASSWORDS_FILE], strerror(ERRNO)); - } else if (!mg_stat(path, &st) && st.is_directory) { - (void) mg_snprintf(conn, name, sizeof(name), "%s%c%s", - path, DIRSEP, PASSWORDS_FILE_NAME); - fp = mg_fopen(name, "r"); - } else { - // Try to find .htpasswd in requested directory. - for (p = path, e = p + strlen(p) - 1; e > p; e--) - if (IS_DIRSEP_CHAR(*e)) - break; - (void) mg_snprintf(conn, name, sizeof(name), "%.*s%c%s", - (int) (e - p), p, DIRSEP, PASSWORDS_FILE_NAME); - fp = mg_fopen(name, "r"); - } - - return fp; -} - -// Parsed Authorization header -struct ah { - char *user, *uri, *cnonce, *response, *qop, *nc, *nonce; -}; - -static int parse_auth_header(struct mg_connection *conn, char *buf, - size_t buf_size, struct ah *ah) { - char *name, *value, *s; - const char *auth_header; - - if ((auth_header = mg_get_header(conn, "Authorization")) == NULL || - mg_strncasecmp(auth_header, "Digest ", 7) != 0) { - return 0; - } - - // Make modifiable copy of the auth header - (void) mg_strlcpy(buf, auth_header + 7, buf_size); - - s = buf; - (void) memset(ah, 0, sizeof(*ah)); - - // Parse authorization header - for (;;) { - // Gobble initial spaces - while (isspace(* (unsigned char *) s)) { - s++; - } - name = skip_quoted(&s, "=", " ", 0); - // Value is either quote-delimited, or ends at first comma or space. - if (s[0] == '\"') { - s++; - value = skip_quoted(&s, "\"", " ", '\\'); - if (s[0] == ',') { - s++; - } - } else { - value = skip_quoted(&s, ", ", " ", 0); // IE uses commas, FF uses spaces - } - if (*name == '\0') { - break; - } - - if (!strcmp(name, "username")) { - ah->user = value; - } else if (!strcmp(name, "cnonce")) { - ah->cnonce = value; - } else if (!strcmp(name, "response")) { - ah->response = value; - } else if (!strcmp(name, "uri")) { - ah->uri = value; - } else if (!strcmp(name, "qop")) { - ah->qop = value; - } else if (!strcmp(name, "nc")) { - ah->nc = value; - } else if (!strcmp(name, "nonce")) { - ah->nonce = value; - } - } - - // CGI needs it as REMOTE_USER - if (ah->user != NULL) { - conn->request_info.remote_user = mg_strdup(ah->user); - } else { - return 0; - } - - return 1; -} - -// Authorize against the opened passwords file. Return 1 if authorized. -static int authorize(struct mg_connection *conn, FILE *fp) { - struct ah ah; - char line[256], f_user[256], ha1[256], f_domain[256], buf[BUFSIZ]; - - if (!parse_auth_header(conn, buf, sizeof(buf), &ah)) { - return 0; - } - - // Loop over passwords file - while (fgets(line, sizeof(line), fp) != NULL) { - if (sscanf(line, "%[^:]:%[^:]:%s", f_user, f_domain, ha1) != 3) { - continue; - } - - if (!strcmp(ah.user, f_user) && - !strcmp(conn->ctx->config[AUTHENTICATION_DOMAIN], f_domain)) - return check_password( - conn->request_info.request_method, - ha1, ah.uri, ah.nonce, ah.nc, ah.cnonce, ah.qop, - ah.response); - } - - return 0; -} - -// Return 1 if request is authorised, 0 otherwise. -static int check_authorization(struct mg_connection *conn, const char *path) { - FILE *fp; - char fname[PATH_MAX]; - struct vec uri_vec, filename_vec; - const char *list; - int authorized; - - fp = NULL; - authorized = 1; - - list = conn->ctx->config[PROTECT_URI]; - while ((list = next_option(list, &uri_vec, &filename_vec)) != NULL) { - if (!memcmp(conn->request_info.uri, uri_vec.ptr, uri_vec.len)) { - (void) mg_snprintf(conn, fname, sizeof(fname), "%.*s", - filename_vec.len, filename_vec.ptr); - if ((fp = mg_fopen(fname, "r")) == NULL) { - cry(conn, "%s: cannot open %s: %s", __func__, fname, strerror(errno)); - } - break; - } - } - - if (fp == NULL) { - fp = open_auth_file(conn, path); - } - - if (fp != NULL) { - authorized = authorize(conn, fp); - (void) fclose(fp); - } - - return authorized; -} - -static void send_authorization_request(struct mg_connection *conn) { - conn->request_info.status_code = 401; - (void) mg_printf(conn, - "HTTP/1.1 401 Unauthorized\r\n" - "Content-Length: 0\r\n" - "WWW-Authenticate: Digest qop=\"auth\", " - "realm=\"%s\", nonce=\"%lu\"\r\n\r\n", - conn->ctx->config[AUTHENTICATION_DOMAIN], - (unsigned long) time(NULL)); -} - -static int is_authorized_for_put(struct mg_connection *conn) { - FILE *fp; - int ret = 0; - - fp = conn->ctx->config[PUT_DELETE_PASSWORDS_FILE] == NULL ? NULL : - mg_fopen(conn->ctx->config[PUT_DELETE_PASSWORDS_FILE], "r"); - - if (fp != NULL) { - ret = authorize(conn, fp); - (void) fclose(fp); - } - - return ret; -} - -int mg_modify_passwords_file(const char *fname, const char *domain, - const char *user, const char *pass) { - int found; - char line[512], u[512], d[512], ha1[33], tmp[PATH_MAX]; - FILE *fp, *fp2; - - found = 0; - fp = fp2 = NULL; - - // Regard empty password as no password - remove user record. - if (pass != NULL && pass[0] == '\0') { - pass = NULL; - } - - (void) snprintf(tmp, sizeof(tmp), "%s.tmp", fname); - - // Create the file if does not exist - if ((fp = mg_fopen(fname, "a+")) != NULL) { - (void) fclose(fp); - } - - // Open the given file and temporary file - if ((fp = mg_fopen(fname, "r")) == NULL) { - return 0; - } else if ((fp2 = mg_fopen(tmp, "w+")) == NULL) { - fclose(fp); - return 0; - } - - // Copy the stuff to temporary file - while (fgets(line, sizeof(line), fp) != NULL) { - if (sscanf(line, "%[^:]:%[^:]:%*s", u, d) != 2) { - continue; - } - - if (!strcmp(u, user) && !strcmp(d, domain)) { - found++; - if (pass != NULL) { - mg_md5(ha1, user, ":", domain, ":", pass, NULL); - fprintf(fp2, "%s:%s:%s\n", user, domain, ha1); - } - } else { - (void) fprintf(fp2, "%s", line); - } - } - - // If new user, just add it - if (!found && pass != NULL) { - mg_md5(ha1, user, ":", domain, ":", pass, NULL); - (void) fprintf(fp2, "%s:%s:%s\n", user, domain, ha1); - } - - // Close files - (void) fclose(fp); - (void) fclose(fp2); - - // Put the temp file in place of real file - (void) mg_remove(fname); - (void) mg_rename(tmp, fname); - - return 1; -} - -struct de { - struct mg_connection *conn; - char *file_name; - struct mgstat st; -}; - -static void url_encode(const char *src, char *dst, size_t dst_len) { - static const char *dont_escape = "._-$,;~()"; - static const char *hex = "0123456789abcdef"; - const char *end = dst + dst_len - 1; - - for (; *src != '\0' && dst < end; src++, dst++) { - if (isalnum(*(const unsigned char *) src) || - strchr(dont_escape, * (const unsigned char *) src) != NULL) { - *dst = *src; - } else if (dst + 2 < end) { - dst[0] = '%'; - dst[1] = hex[(* (const unsigned char *) src) >> 4]; - dst[2] = hex[(* (const unsigned char *) src) & 0xf]; - dst += 2; - } - } - - *dst = '\0'; -} - -static void print_dir_entry(struct de *de) { - char size[64], mod[64], href[PATH_MAX]; - - if (de->st.is_directory) { - (void) mg_snprintf(de->conn, size, sizeof(size), "%s", "[DIRECTORY]"); - } else { - // We use (signed) cast below because MSVC 6 compiler cannot - // convert unsigned __int64 to double. Sigh. - if (de->st.size < 1024) { - (void) mg_snprintf(de->conn, size, sizeof(size), - "%lu", (unsigned long) de->st.size); - } else if (de->st.size < 1024 * 1024) { - (void) mg_snprintf(de->conn, size, sizeof(size), - "%.1fk", (double) de->st.size / 1024.0); - } else if (de->st.size < 1024 * 1024 * 1024) { - (void) mg_snprintf(de->conn, size, sizeof(size), - "%.1fM", (double) de->st.size / 1048576); - } else { - (void) mg_snprintf(de->conn, size, sizeof(size), - "%.1fG", (double) de->st.size / 1073741824); - } - } - (void) strftime(mod, sizeof(mod), "%d-%b-%Y %H:%M", localtime(&de->st.mtime)); - url_encode(de->file_name, href, sizeof(href)); - de->conn->num_bytes_sent += mg_printf(de->conn, - "<tr><td><a href=\"%s%s%s\">%s%s</a></td>" - "<td> %s</td><td> %s</td></tr>\n", - de->conn->request_info.uri, href, de->st.is_directory ? "/" : "", - de->file_name, de->st.is_directory ? "/" : "", mod, size); -} - -// This function is called from send_directory() and used for -// sorting directory entries by size, or name, or modification time. -// On windows, __cdecl specification is needed in case if project is built -// with __stdcall convention. qsort always requires __cdels callback. -static int WINCDECL compare_dir_entries(const void *p1, const void *p2) { - const struct de *a = (const struct de *) p1, *b = (const struct de *) p2; - const char *query_string = a->conn->request_info.query_string; - int cmp_result = 0; - - if (query_string == NULL) { - query_string = "na"; - } - - if (a->st.is_directory && !b->st.is_directory) { - return -1; // Always put directories on top - } else if (!a->st.is_directory && b->st.is_directory) { - return 1; // Always put directories on top - } else if (*query_string == 'n') { - cmp_result = strcmp(a->file_name, b->file_name); - } else if (*query_string == 's') { - cmp_result = a->st.size == b->st.size ? 0 : - a->st.size > b->st.size ? 1 : -1; - } else if (*query_string == 'd') { - cmp_result = a->st.mtime == b->st.mtime ? 0 : - a->st.mtime > b->st.mtime ? 1 : -1; - } - - return query_string[1] == 'd' ? -cmp_result : cmp_result; -} - -static int scan_directory(struct mg_connection *conn, const char *dir, - void *data, void (*cb)(struct de *, void *)) { - char path[PATH_MAX]; - struct dirent *dp; - DIR *dirp; - struct de de; - - if ((dirp = opendir(dir)) == NULL) { - return 0; - } else { - de.conn = conn; - - while ((dp = readdir(dirp)) != NULL) { - // Do not show current dir and passwords file - if (!strcmp(dp->d_name, ".") || - !strcmp(dp->d_name, "..") || - !strcmp(dp->d_name, PASSWORDS_FILE_NAME)) - continue; - - mg_snprintf(conn, path, sizeof(path), "%s%c%s", dir, DIRSEP, dp->d_name); - - // If we don't memset stat structure to zero, mtime will have - // garbage and strftime() will segfault later on in - // print_dir_entry(). memset is required only if mg_stat() - // fails. For more details, see - // http://code.google.com/p/mongoose/issues/detail?id=79 - if (mg_stat(path, &de.st) != 0) { - memset(&de.st, 0, sizeof(de.st)); - } - de.file_name = dp->d_name; - - cb(&de, data); - } - (void) closedir(dirp); - } - return 1; -} - -struct dir_scan_data { - struct de *entries; - int num_entries; - int arr_size; -}; - -static void dir_scan_callback(struct de *de, void *data) { - struct dir_scan_data *dsd = (struct dir_scan_data *) data; - - if (dsd->entries == NULL || dsd->num_entries >= dsd->arr_size) { - dsd->arr_size *= 2; - dsd->entries = (struct de *) realloc(dsd->entries, dsd->arr_size * - sizeof(dsd->entries[0])); - } - if (dsd->entries == NULL) { - // TODO(lsm): propagate an error to the caller - dsd->num_entries = 0; - } else { - dsd->entries[dsd->num_entries].file_name = mg_strdup(de->file_name); - dsd->entries[dsd->num_entries].st = de->st; - dsd->entries[dsd->num_entries].conn = de->conn; - dsd->num_entries++; - } -} - -static void handle_directory_request(struct mg_connection *conn, - const char *dir) { - int i, sort_direction; - struct dir_scan_data data = { NULL, 0, 128 }; - - if (!scan_directory(conn, dir, &data, dir_scan_callback)) { - send_http_error(conn, 500, "Cannot open directory", - "Error: opendir(%s): %s", dir, strerror(ERRNO)); - return; - } - - sort_direction = conn->request_info.query_string != NULL && - conn->request_info.query_string[1] == 'd' ? 'a' : 'd'; - - mg_printf(conn, "%s", - "HTTP/1.1 200 OK\r\n" - "Connection: close\r\n" - "Content-Type: text/html; charset=utf-8\r\n\r\n"); - - conn->num_bytes_sent += mg_printf(conn, - "<html><head><title>Index of %s</title>" - "<style>th {text-align: left;}</style></head>" - "<body><h1>Index of %s</h1><pre><table cellpadding=\"0\">" - "<tr><th><a href=\"?n%c\">Name</a></th>" - "<th><a href=\"?d%c\">Modified</a></th>" - "<th><a href=\"?s%c\">Size</a></th></tr>" - "<tr><td colspan=\"3\"><hr></td></tr>", - conn->request_info.uri, conn->request_info.uri, - sort_direction, sort_direction, sort_direction); - - // Print first entry - link to a parent directory - conn->num_bytes_sent += mg_printf(conn, - "<tr><td><a href=\"%s%s\">%s</a></td>" - "<td> %s</td><td> %s</td></tr>\n", - conn->request_info.uri, "..", "Parent directory", "-", "-"); - - // Sort and print directory entries - qsort(data.entries, (size_t) data.num_entries, sizeof(data.entries[0]), - compare_dir_entries); - for (i = 0; i < data.num_entries; i++) { - print_dir_entry(&data.entries[i]); - free(data.entries[i].file_name); - } - free(data.entries); - - conn->num_bytes_sent += mg_printf(conn, "%s", "</table></body></html>"); - conn->request_info.status_code = 200; -} - -// Send len bytes from the opened file to the client. -static void send_file_data(struct mg_connection *conn, FILE *fp, int64_t len) { - char buf[BUFSIZ]; - int to_read, num_read, num_written; - - while (len > 0) { - // Calculate how much to read from the file in the buffer - to_read = sizeof(buf); - if ((int64_t) to_read > len) - to_read = (int) len; - - // Read from file, exit the loop on error - if ((num_read = fread(buf, 1, (size_t)to_read, fp)) == 0) - break; - - // Send read bytes to the client, exit the loop on error - if ((num_written = mg_write(conn, buf, (size_t)num_read)) != num_read) - break; - - // Both read and were successful, adjust counters - conn->num_bytes_sent += num_written; - len -= num_written; - } -} - -static int parse_range_header(const char *header, int64_t *a, int64_t *b) { - return sscanf(header, "bytes=%" INT64_FMT "-%" INT64_FMT, a, b); -} - -static void gmt_time_string(char *buf, size_t buf_len, time_t *t) { - strftime(buf, buf_len, "%a, %d %b %Y %H:%M:%S GMT", gmtime(t)); -} - -static void handle_file_request(struct mg_connection *conn, const char *path, - struct mgstat *stp) { - char date[64], lm[64], etag[64], range[64]; - const char *msg = "OK", *hdr; - time_t curtime = time(NULL); - int64_t cl, r1, r2; - struct vec mime_vec; - FILE *fp; - int n; - - get_mime_type(conn->ctx, path, &mime_vec); - cl = stp->size; - conn->request_info.status_code = 200; - range[0] = '\0'; - - if ((fp = mg_fopen(path, "rb")) == NULL) { - send_http_error(conn, 500, http_500_error, - "fopen(%s): %s", path, strerror(ERRNO)); - return; - } - set_close_on_exec(fileno(fp)); - - // If Range: header specified, act accordingly - r1 = r2 = 0; - hdr = mg_get_header(conn, "Range"); - if (hdr != NULL && (n = parse_range_header(hdr, &r1, &r2)) > 0) { - conn->request_info.status_code = 206; - (void) fseeko(fp, (off_t) r1, SEEK_SET); - cl = n == 2 ? r2 - r1 + 1: cl - r1; - (void) mg_snprintf(conn, range, sizeof(range), - "Content-Range: bytes " - "%" INT64_FMT "-%" - INT64_FMT "/%" INT64_FMT "\r\n", - r1, r1 + cl - 1, stp->size); - msg = "Partial Content"; - } - - // Prepare Etag, Date, Last-Modified headers. Must be in UTC, according to - // http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3 - gmt_time_string(date, sizeof(date), &curtime); - gmt_time_string(lm, sizeof(lm), &stp->mtime); - (void) mg_snprintf(conn, etag, sizeof(etag), "%lx.%lx", - (unsigned long) stp->mtime, (unsigned long) stp->size); - - (void) mg_printf(conn, - "HTTP/1.1 %d %s\r\n" - "Date: %s\r\n" - "Last-Modified: %s\r\n" - "Etag: \"%s\"\r\n" - "Content-Type: %.*s\r\n" - "Content-Length: %" INT64_FMT "\r\n" - "Connection: %s\r\n" - "Accept-Ranges: bytes\r\n" - "%s\r\n", - conn->request_info.status_code, msg, date, lm, etag, - mime_vec.len, mime_vec.ptr, cl, suggest_connection_header(conn), range); - - if (strcmp(conn->request_info.request_method, "HEAD") != 0) { - send_file_data(conn, fp, cl); - } - (void) fclose(fp); -} - -void mg_send_file(struct mg_connection *conn, const char *path) { - struct mgstat st; - if (mg_stat(path, &st) == 0) { - handle_file_request(conn, path, &st); - } else { - send_http_error(conn, 404, "Not Found", "%s", "File not found"); - } -} - - -// Parse HTTP headers from the given buffer, advance buffer to the point -// where parsing stopped. -static void parse_http_headers(char **buf, struct mg_request_info *ri) { - int i; - - for (i = 0; i < (int) ARRAY_SIZE(ri->http_headers); i++) { - ri->http_headers[i].name = skip_quoted(buf, ":", " ", 0); - ri->http_headers[i].value = skip(buf, "\r\n"); - if (ri->http_headers[i].name[0] == '\0') - break; - ri->num_headers = i + 1; - } -} - -static int is_valid_http_method(const char *method) { - return !strcmp(method, "GET") || !strcmp(method, "POST") || - !strcmp(method, "HEAD") || !strcmp(method, "CONNECT") || - !strcmp(method, "PUT") || !strcmp(method, "DELETE") || - !strcmp(method, "OPTIONS") || !strcmp(method, "PROPFIND"); -} - -// Parse HTTP request, fill in mg_request_info structure. -static int parse_http_request(char *buf, struct mg_request_info *ri) { - int status = 0; - - // RFC says that all initial whitespaces should be ingored - while (*buf != '\0' && isspace(* (unsigned char *) buf)) { - buf++; - } - - ri->request_method = skip(&buf, " "); - ri->uri = skip(&buf, " "); - ri->http_version = skip(&buf, "\r\n"); - - if (is_valid_http_method(ri->request_method) && - strncmp(ri->http_version, "HTTP/", 5) == 0) { - ri->http_version += 5; // Skip "HTTP/" - parse_http_headers(&buf, ri); - status = 1; - } - - return status; -} - -// Keep reading the input (either opened file descriptor fd, or socket sock, -// or SSL descriptor ssl) into buffer buf, until \r\n\r\n appears in the -// buffer (which marks the end of HTTP request). Buffer buf may already -// have some data. The length of the data is stored in nread. -// Upon every read operation, increase nread by the number of bytes read. -static int read_request(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int bufsiz, - int *nread) { - int n, request_len; - - request_len = 0; - while (*nread < bufsiz && request_len == 0) { - n = pull(fp, sock, ssl, buf + *nread, bufsiz - *nread); - if (n <= 0) { - break; - } else { - *nread += n; - request_len = get_request_len(buf, *nread); - } - } - - return request_len; -} - -// For given directory path, substitute it to valid index file. -// Return 0 if index file has been found, -1 if not found. -// If the file is found, it's stats is returned in stp. -static int substitute_index_file(struct mg_connection *conn, char *path, - size_t path_len, struct mgstat *stp) { - const char *list = conn->ctx->config[INDEX_FILES]; - struct mgstat st; - struct vec filename_vec; - size_t n = strlen(path); - int found = 0; - - // The 'path' given to us points to the directory. Remove all trailing - // directory separator characters from the end of the path, and - // then append single directory separator character. - while (n > 0 && IS_DIRSEP_CHAR(path[n - 1])) { - n--; - } - path[n] = DIRSEP; - - // Traverse index files list. For each entry, append it to the given - // path and see if the file exists. If it exists, break the loop - while ((list = next_option(list, &filename_vec, NULL)) != NULL) { - - // Ignore too long entries that may overflow path buffer - if (filename_vec.len > path_len - n) - continue; - - // Prepare full path to the index file - (void) mg_strlcpy(path + n + 1, filename_vec.ptr, filename_vec.len + 1); - - // Does it exist? - if (mg_stat(path, &st) == 0) { - // Yes it does, break the loop - *stp = st; - found = 1; - break; - } - } - - // If no index file exists, restore directory path - if (!found) { - path[n] = '\0'; - } - - return found; -} - -// Return True if we should reply 304 Not Modified. -static int is_not_modified(const struct mg_connection *conn, - const struct mgstat *stp) { - const char *ims = mg_get_header(conn, "If-Modified-Since"); - return ims != NULL && stp->mtime <= parse_date_string(ims); -} - -static int forward_body_data(struct mg_connection *conn, FILE *fp, - SOCKET sock, SSL *ssl) { - const char *expect, *buffered; - char buf[BUFSIZ]; - int to_read, nread, buffered_len, success = 0; - - expect = mg_get_header(conn, "Expect"); - assert(fp != NULL); - - if (conn->content_len == -1) { - send_http_error(conn, 411, "Length Required", ""); - } else if (expect != NULL && mg_strcasecmp(expect, "100-continue")) { - send_http_error(conn, 417, "Expectation Failed", ""); - } else { - if (expect != NULL) { - (void) mg_printf(conn, "%s", "HTTP/1.1 100 Continue\r\n\r\n"); - } - - buffered = conn->buf + conn->request_len; - buffered_len = conn->data_len - conn->request_len; - assert(buffered_len >= 0); - assert(conn->consumed_content == 0); - - if (buffered_len > 0) { - if ((int64_t) buffered_len > conn->content_len) { - buffered_len = (int) conn->content_len; - } - push(fp, sock, ssl, buffered, (int64_t) buffered_len); - conn->consumed_content += buffered_len; - } - - while (conn->consumed_content < conn->content_len) { - to_read = sizeof(buf); - if ((int64_t) to_read > conn->content_len - conn->consumed_content) { - to_read = (int) (conn->content_len - conn->consumed_content); - } - nread = pull(NULL, conn->client.sock, conn->ssl, buf, to_read); - if (nread <= 0 || push(fp, sock, ssl, buf, nread) != nread) { - break; - } - conn->consumed_content += nread; - } - - if (conn->consumed_content == conn->content_len) { - success = 1; - } - - // Each error code path in this function must send an error - if (!success) { - send_http_error(conn, 577, http_500_error, ""); - } - } - - return success; -} - -#if !defined(NO_CGI) -// This structure helps to create an environment for the spawned CGI program. -// Environment is an array of "VARIABLE=VALUE\0" ASCIIZ strings, -// last element must be NULL. -// However, on Windows there is a requirement that all these VARIABLE=VALUE\0 -// strings must reside in a contiguous buffer. The end of the buffer is -// marked by two '\0' characters. -// We satisfy both worlds: we create an envp array (which is vars), all -// entries are actually pointers inside buf. -struct cgi_env_block { - struct mg_connection *conn; - char buf[CGI_ENVIRONMENT_SIZE]; // Environment buffer - int len; // Space taken - char *vars[MAX_CGI_ENVIR_VARS]; // char **envp - int nvars; // Number of variables -}; - -// Append VARIABLE=VALUE\0 string to the buffer, and add a respective -// pointer into the vars array. -static char *addenv(struct cgi_env_block *block, const char *fmt, ...) { - int n, space; - char *added; - va_list ap; - - // Calculate how much space is left in the buffer - space = sizeof(block->buf) - block->len - 2; - assert(space >= 0); - - // Make a pointer to the free space int the buffer - added = block->buf + block->len; - - // Copy VARIABLE=VALUE\0 string into the free space - va_start(ap, fmt); - n = mg_vsnprintf(block->conn, added, (size_t) space, fmt, ap); - va_end(ap); - - // Make sure we do not overflow buffer and the envp array - if (n > 0 && n < space && - block->nvars < (int) ARRAY_SIZE(block->vars) - 2) { - // Append a pointer to the added string into the envp array - block->vars[block->nvars++] = block->buf + block->len; - // Bump up used length counter. Include \0 terminator - block->len += n + 1; - } - - return added; -} - -static void prepare_cgi_environment(struct mg_connection *conn, - const char *prog, - struct cgi_env_block *blk) { - const char *s, *slash; - struct vec var_vec, root; - char *p; - int i; - - blk->len = blk->nvars = 0; - blk->conn = conn; - - memset(&root, 0, sizeof(root)); - - get_document_root(conn, &root); - - addenv(blk, "SERVER_NAME=%s", conn->ctx->config[AUTHENTICATION_DOMAIN]); - addenv(blk, "SERVER_ROOT=%.*s", root.len, root.ptr); - addenv(blk, "DOCUMENT_ROOT=%.*s", root.len, root.ptr); - - // Prepare the environment block - addenv(blk, "%s", "GATEWAY_INTERFACE=CGI/1.1"); - addenv(blk, "%s", "SERVER_PROTOCOL=HTTP/1.1"); - addenv(blk, "%s", "REDIRECT_STATUS=200"); // For PHP - addenv(blk, "SERVER_PORT=%d", ntohs(conn->client.lsa.u.sin.sin_port)); - addenv(blk, "REQUEST_METHOD=%s", conn->request_info.request_method); - addenv(blk, "REMOTE_ADDR=%s", - inet_ntoa(conn->client.rsa.u.sin.sin_addr)); - addenv(blk, "REMOTE_PORT=%d", conn->request_info.remote_port); - addenv(blk, "REQUEST_URI=%s", conn->request_info.uri); - - // SCRIPT_NAME - assert(conn->request_info.uri[0] == '/'); - slash = strrchr(conn->request_info.uri, '/'); - if ((s = strrchr(prog, '/')) == NULL) - s = prog; - addenv(blk, "SCRIPT_NAME=%.*s%s", slash - conn->request_info.uri, - conn->request_info.uri, s); - - addenv(blk, "SCRIPT_FILENAME=%s", prog); - addenv(blk, "PATH_TRANSLATED=%s", prog); - addenv(blk, "HTTPS=%s", conn->ssl == NULL ? "off" : "on"); - - if ((s = mg_get_header(conn, "Content-Type")) != NULL) - addenv(blk, "CONTENT_TYPE=%s", s); - - if (conn->request_info.query_string != NULL) - addenv(blk, "QUERY_STRING=%s", conn->request_info.query_string); - - if ((s = mg_get_header(conn, "Content-Length")) != NULL) - addenv(blk, "CONTENT_LENGTH=%s", s); - - if ((s = getenv("PATH")) != NULL) - addenv(blk, "PATH=%s", s); - -#if defined(_WIN32) - if ((s = getenv("COMSPEC")) != NULL) - addenv(blk, "COMSPEC=%s", s); - if ((s = getenv("SYSTEMROOT")) != NULL) - addenv(blk, "SYSTEMROOT=%s", s); -#else - if ((s = getenv("LD_LIBRARY_PATH")) != NULL) - addenv(blk, "LD_LIBRARY_PATH=%s", s); -#endif // _WIN32 - - if ((s = getenv("PERLLIB")) != NULL) - addenv(blk, "PERLLIB=%s", s); - - if (conn->request_info.remote_user != NULL) { - addenv(blk, "REMOTE_USER=%s", conn->request_info.remote_user); - addenv(blk, "%s", "AUTH_TYPE=Digest"); - } - - // Add all headers as HTTP_* variables - for (i = 0; i < conn->request_info.num_headers; i++) { - p = addenv(blk, "HTTP_%s=%s", - conn->request_info.http_headers[i].name, - conn->request_info.http_headers[i].value); - - // Convert variable name into uppercase, and change - to _ - for (; *p != '=' && *p != '\0'; p++) { - if (*p == '-') - *p = '_'; - *p = (char) toupper(* (unsigned char *) p); - } - } - - // Add user-specified variables - s = conn->ctx->config[CGI_ENVIRONMENT]; - while ((s = next_option(s, &var_vec, NULL)) != NULL) { - addenv(blk, "%.*s", var_vec.len, var_vec.ptr); - } - - blk->vars[blk->nvars++] = NULL; - blk->buf[blk->len++] = '\0'; - - assert(blk->nvars < (int) ARRAY_SIZE(blk->vars)); - assert(blk->len > 0); - assert(blk->len < (int) sizeof(blk->buf)); -} - -static void handle_cgi_request(struct mg_connection *conn, const char *prog) { - int headers_len, data_len, i, fd_stdin[2], fd_stdout[2]; - const char *status; - char buf[BUFSIZ], *pbuf, dir[PATH_MAX], *p; - struct mg_request_info ri; - struct cgi_env_block blk; - FILE *in, *out; - pid_t pid; - - memset(&ri, 0, sizeof(ri)); - - prepare_cgi_environment(conn, prog, &blk); - - // CGI must be executed in its own directory. 'dir' must point to the - // directory containing executable program, 'p' must point to the - // executable program name relative to 'dir'. - (void) mg_snprintf(conn, dir, sizeof(dir), "%s", prog); - if ((p = strrchr(dir, DIRSEP)) != NULL) { - *p++ = '\0'; - } else { - dir[0] = '.', dir[1] = '\0'; - p = (char *) prog; - } - - pid = (pid_t) -1; - fd_stdin[0] = fd_stdin[1] = fd_stdout[0] = fd_stdout[1] = -1; - in = out = NULL; - - if (pipe(fd_stdin) != 0 || pipe(fd_stdout) != 0) { - send_http_error(conn, 500, http_500_error, - "Cannot create CGI pipe: %s", strerror(ERRNO)); - goto done; - } else if ((pid = spawn_process(conn, p, blk.buf, blk.vars, - fd_stdin[0], fd_stdout[1], dir)) == (pid_t) -1) { - goto done; - } else if ((in = fdopen(fd_stdin[1], "wb")) == NULL || - (out = fdopen(fd_stdout[0], "rb")) == NULL) { - send_http_error(conn, 500, http_500_error, - "fopen: %s", strerror(ERRNO)); - goto done; - } - - setbuf(in, NULL); - setbuf(out, NULL); - - // spawn_process() must close those! - // If we don't mark them as closed, close() attempt before - // return from this function throws an exception on Windows. - // Windows does not like when closed descriptor is closed again. - fd_stdin[0] = fd_stdout[1] = -1; - - // Send POST data to the CGI process if needed - if (!strcmp(conn->request_info.request_method, "POST") && - !forward_body_data(conn, in, INVALID_SOCKET, NULL)) { - goto done; - } - - // Now read CGI reply into a buffer. We need to set correct - // status code, thus we need to see all HTTP headers first. - // Do not send anything back to client, until we buffer in all - // HTTP headers. - data_len = 0; - headers_len = read_request(out, INVALID_SOCKET, NULL, - buf, sizeof(buf), &data_len); - if (headers_len <= 0) { - send_http_error(conn, 500, http_500_error, - "CGI program sent malformed HTTP headers: [%.*s]", - data_len, buf); - goto done; - } - pbuf = buf; - buf[headers_len - 1] = '\0'; - parse_http_headers(&pbuf, &ri); - - // Make up and send the status line - status = get_header(&ri, "Status"); - conn->request_info.status_code = status == NULL ? 200 : atoi(status); - (void) mg_printf(conn, "HTTP/1.1 %d OK\r\n", conn->request_info.status_code); - - // Send headers - for (i = 0; i < ri.num_headers; i++) { - mg_printf(conn, "%s: %s\r\n", - ri.http_headers[i].name, ri.http_headers[i].value); - } - (void) mg_write(conn, "\r\n", 2); - - // Send chunk of data that may be read after the headers - conn->num_bytes_sent += mg_write(conn, buf + headers_len, - (size_t)(data_len - headers_len)); - - // Read the rest of CGI output and send to the client - send_file_data(conn, out, INT64_MAX); - -done: - if (pid != (pid_t) -1) { - kill(pid, SIGKILL); - } - if (fd_stdin[0] != -1) { - (void) close(fd_stdin[0]); - } - if (fd_stdout[1] != -1) { - (void) close(fd_stdout[1]); - } - - if (in != NULL) { - (void) fclose(in); - } else if (fd_stdin[1] != -1) { - (void) close(fd_stdin[1]); - } - - if (out != NULL) { - (void) fclose(out); - } else if (fd_stdout[0] != -1) { - (void) close(fd_stdout[0]); - } -} -#endif // !NO_CGI - -// For a given PUT path, create all intermediate subdirectories -// for given path. Return 0 if the path itself is a directory, -// or -1 on error, 1 if OK. -static int put_dir(const char *path) { - char buf[PATH_MAX]; - const char *s, *p; - struct mgstat st; - int len, res = 1; - - for (s = p = path + 2; (p = strchr(s, DIRSEP)) != NULL; s = ++p) { - len = p - path; - if (len >= (int) sizeof(buf)) { - res = -1; - break; - } - memcpy(buf, path, len); - buf[len] = '\0'; - - // Try to create intermediate directory - DEBUG_TRACE(("mkdir(%s)", buf)); - if (mg_stat(buf, &st) == -1 && mg_mkdir(buf, 0755) != 0) { - res = -1; - break; - } - - // Is path itself a directory? - if (p[1] == '\0') { - res = 0; - } - } - - return res; -} - -static void put_file(struct mg_connection *conn, const char *path) { - struct mgstat st; - const char *range; - int64_t r1, r2; - FILE *fp; - int rc; - - conn->request_info.status_code = mg_stat(path, &st) == 0 ? 200 : 201; - - if ((rc = put_dir(path)) == 0) { - mg_printf(conn, "HTTP/1.1 %d OK\r\n\r\n", conn->request_info.status_code); - } else if (rc == -1) { - send_http_error(conn, 500, http_500_error, - "put_dir(%s): %s", path, strerror(ERRNO)); - } else if ((fp = mg_fopen(path, "wb+")) == NULL) { - send_http_error(conn, 500, http_500_error, - "fopen(%s): %s", path, strerror(ERRNO)); - } else { - set_close_on_exec(fileno(fp)); - range = mg_get_header(conn, "Content-Range"); - r1 = r2 = 0; - if (range != NULL && parse_range_header(range, &r1, &r2) > 0) { - conn->request_info.status_code = 206; - // TODO(lsm): handle seek error - (void) fseeko(fp, (off_t) r1, SEEK_SET); - } - if (forward_body_data(conn, fp, INVALID_SOCKET, NULL)) - (void) mg_printf(conn, "HTTP/1.1 %d OK\r\n\r\n", - conn->request_info.status_code); - (void) fclose(fp); - } -} - -static void send_ssi_file(struct mg_connection *, const char *, FILE *, int); - -static void do_ssi_include(struct mg_connection *conn, const char *ssi, - char *tag, int include_level) { - char file_name[BUFSIZ], path[PATH_MAX], *p; - struct vec root; - int is_ssi; - FILE *fp; - - get_document_root(conn, &root); - - // sscanf() is safe here, since send_ssi_file() also uses buffer - // of size BUFSIZ to get the tag. So strlen(tag) is always < BUFSIZ. - if (sscanf(tag, " virtual=\"%[^\"]\"", file_name) == 1) { - // File name is relative to the webserver root - (void) mg_snprintf(conn, path, sizeof(path), "%.*s%c%s", - root.len, root.ptr, DIRSEP, file_name); - } else if (sscanf(tag, " file=\"%[^\"]\"", file_name) == 1) { - // File name is relative to the webserver working directory - // or it is absolute system path - (void) mg_snprintf(conn, path, sizeof(path), "%s", file_name); - } else if (sscanf(tag, " \"%[^\"]\"", file_name) == 1) { - // File name is relative to the currect document - (void) mg_snprintf(conn, path, sizeof(path), "%s", ssi); - if ((p = strrchr(path, DIRSEP)) != NULL) { - p[1] = '\0'; - } - (void) mg_snprintf(conn, path + strlen(path), - sizeof(path) - strlen(path), "%s", file_name); - } else { - cry(conn, "Bad SSI #include: [%s]", tag); - return; - } - - if ((fp = mg_fopen(path, "rb")) == NULL) { - cry(conn, "Cannot open SSI #include: [%s]: fopen(%s): %s", - tag, path, strerror(ERRNO)); - } else { - set_close_on_exec(fileno(fp)); - is_ssi = match_extension(path, conn->ctx->config[SSI_EXTENSIONS]); - if (is_ssi) { - send_ssi_file(conn, path, fp, include_level + 1); - } else { - send_file_data(conn, fp, INT64_MAX); - } - (void) fclose(fp); - } -} - -#if !defined(NO_POPEN) -static void do_ssi_exec(struct mg_connection *conn, char *tag) { - char cmd[BUFSIZ]; - FILE *fp; - - if (sscanf(tag, " \"%[^\"]\"", cmd) != 1) { - cry(conn, "Bad SSI #exec: [%s]", tag); - } else if ((fp = popen(cmd, "r")) == NULL) { - cry(conn, "Cannot SSI #exec: [%s]: %s", cmd, strerror(ERRNO)); - } else { - send_file_data(conn, fp, INT64_MAX); - (void) pclose(fp); - } -} -#endif // !NO_POPEN - -static void send_ssi_file(struct mg_connection *conn, const char *path, - FILE *fp, int include_level) { - char buf[BUFSIZ]; - int ch, len, in_ssi_tag; - - if (include_level > 10) { - cry(conn, "SSI #include level is too deep (%s)", path); - return; - } - - in_ssi_tag = 0; - len = 0; - - while ((ch = fgetc(fp)) != EOF) { - if (in_ssi_tag && ch == '>') { - in_ssi_tag = 0; - buf[len++] = (char) ch; - buf[len] = '\0'; - assert(len <= (int) sizeof(buf)); - if (len < 6 || memcmp(buf, "<!--#", 5) != 0) { - // Not an SSI tag, pass it - (void) mg_write(conn, buf, (size_t)len); - } else { - if (!memcmp(buf + 5, "include", 7)) { - do_ssi_include(conn, path, buf + 12, include_level); -#if !defined(NO_POPEN) - } else if (!memcmp(buf + 5, "exec", 4)) { - do_ssi_exec(conn, buf + 9); -#endif // !NO_POPEN - } else { - cry(conn, "%s: unknown SSI " "command: \"%s\"", path, buf); - } - } - len = 0; - } else if (in_ssi_tag) { - if (len == 5 && memcmp(buf, "<!--#", 5) != 0) { - // Not an SSI tag - in_ssi_tag = 0; - } else if (len == (int) sizeof(buf) - 2) { - cry(conn, "%s: SSI tag is too large", path); - len = 0; - } - buf[len++] = ch & 0xff; - } else if (ch == '<') { - in_ssi_tag = 1; - if (len > 0) { - (void) mg_write(conn, buf, (size_t)len); - } - len = 0; - buf[len++] = ch & 0xff; - } else { - buf[len++] = ch & 0xff; - if (len == (int) sizeof(buf)) { - (void) mg_write(conn, buf, (size_t)len); - len = 0; - } - } - } - - // Send the rest of buffered data - if (len > 0) { - (void) mg_write(conn, buf, (size_t)len); - } -} - -static void handle_ssi_file_request(struct mg_connection *conn, - const char *path) { - FILE *fp; - - if ((fp = mg_fopen(path, "rb")) == NULL) { - send_http_error(conn, 500, http_500_error, "fopen(%s): %s", path, - strerror(ERRNO)); - } else { - set_close_on_exec(fileno(fp)); - mg_printf(conn, "HTTP/1.1 200 OK\r\n" - "Content-Type: text/html\r\nConnection: %s\r\n\r\n", - suggest_connection_header(conn)); - send_ssi_file(conn, path, fp, 0); - (void) fclose(fp); - } -} - -static void send_options(struct mg_connection *conn) { - conn->request_info.status_code = 200; - - (void) mg_printf(conn, - "HTTP/1.1 200 OK\r\n" - "Allow: GET, POST, HEAD, CONNECT, PUT, DELETE, OPTIONS\r\n" - "DAV: 1\r\n\r\n"); -} - -// Writes PROPFIND properties for a collection element -static void print_props(struct mg_connection *conn, const char* uri, - struct mgstat* st) { - char mtime[64]; - gmt_time_string(mtime, sizeof(mtime), &st->mtime); - conn->num_bytes_sent += mg_printf(conn, - "<d:response>" - "<d:href>%s</d:href>" - "<d:propstat>" - "<d:prop>" - "<d:resourcetype>%s</d:resourcetype>" - "<d:getcontentlength>%" INT64_FMT "</d:getcontentlength>" - "<d:getlastmodified>%s</d:getlastmodified>" - "</d:prop>" - "<d:status>HTTP/1.1 200 OK</d:status>" - "</d:propstat>" - "</d:response>\n", - uri, - st->is_directory ? "<d:collection/>" : "", - st->size, - mtime); -} - -static void print_dav_dir_entry(struct de *de, void *data) { - char href[PATH_MAX]; - struct mg_connection *conn = (struct mg_connection *) data; - mg_snprintf(conn, href, sizeof(href), "%s%s", - conn->request_info.uri, de->file_name); - print_props(conn, href, &de->st); -} - -static void handle_propfind(struct mg_connection *conn, const char* path, - struct mgstat* st) { - const char *depth = mg_get_header(conn, "Depth"); - - conn->request_info.status_code = 207; - mg_printf(conn, "HTTP/1.1 207 Multi-Status\r\n" - "Connection: close\r\n" - "Content-Type: text/xml; charset=utf-8\r\n\r\n"); - - conn->num_bytes_sent += mg_printf(conn, - "<?xml version=\"1.0\" encoding=\"utf-8\"?>" - "<d:multistatus xmlns:d='DAV:'>\n"); - - // Print properties for the requested resource itself - print_props(conn, conn->request_info.uri, st); - - // If it is a directory, print directory entries too if Depth is not 0 - if (st->is_directory && - !mg_strcasecmp(conn->ctx->config[ENABLE_DIRECTORY_LISTING], "yes") && - (depth == NULL || strcmp(depth, "0") != 0)) { - scan_directory(conn, path, conn, &print_dav_dir_entry); - } - - conn->num_bytes_sent += mg_printf(conn, "%s\n", "</d:multistatus>"); -} - -// This is the heart of the Mongoose's logic. -// This function is called when the request is read, parsed and validated, -// and Mongoose must decide what action to take: serve a file, or -// a directory, or call embedded function, etcetera. -static void handle_request(struct mg_connection *conn) { - struct mg_request_info *ri = &conn->request_info; - char path[PATH_MAX]; - int uri_len; - struct mgstat st; - - if ((conn->request_info.query_string = strchr(ri->uri, '?')) != NULL) { - * conn->request_info.query_string++ = '\0'; - } - uri_len = strlen(ri->uri); - url_decode(ri->uri, (size_t)uri_len, ri->uri, (size_t)(uri_len + 1), 0); - remove_double_dots_and_double_slashes(ri->uri); - convert_uri_to_file_name(conn, ri->uri, path, sizeof(path)); - - DEBUG_TRACE(("%s", ri->uri)); - if (!check_authorization(conn, path)) { - send_authorization_request(conn); - } else if (call_user(conn, MG_NEW_REQUEST) != NULL) { - // Do nothing, callback has served the request - } else if (!strcmp(ri->request_method, "OPTIONS")) { - send_options(conn); - } else if (strstr(path, PASSWORDS_FILE_NAME)) { - // Do not allow to view passwords files - send_http_error(conn, 403, "Forbidden", "Access Forbidden"); - } else if (conn->ctx->config[DOCUMENT_ROOT] == NULL) { - send_http_error(conn, 404, "Not Found", "Not Found"); - } else if ((!strcmp(ri->request_method, "PUT") || - !strcmp(ri->request_method, "DELETE")) && - (conn->ctx->config[PUT_DELETE_PASSWORDS_FILE] == NULL || - !is_authorized_for_put(conn))) { - send_authorization_request(conn); - } else if (!strcmp(ri->request_method, "PUT")) { - put_file(conn, path); - } else if (!strcmp(ri->request_method, "DELETE")) { - if (mg_remove(path) == 0) { - send_http_error(conn, 200, "OK", ""); - } else { - send_http_error(conn, 500, http_500_error, "remove(%s): %s", path, - strerror(ERRNO)); - } - } else if (mg_stat(path, &st) != 0) { - send_http_error(conn, 404, "Not Found", "%s", "File not found"); - } else if (st.is_directory && ri->uri[uri_len - 1] != '/') { - (void) mg_printf(conn, - "HTTP/1.1 301 Moved Permanently\r\n" - "Location: %s/\r\n\r\n", ri->uri); - } else if (!strcmp(ri->request_method, "PROPFIND")) { - handle_propfind(conn, path, &st); - } else if (st.is_directory && - !substitute_index_file(conn, path, sizeof(path), &st)) { - if (!mg_strcasecmp(conn->ctx->config[ENABLE_DIRECTORY_LISTING], "yes")) { - handle_directory_request(conn, path); - } else { - send_http_error(conn, 403, "Directory Listing Denied", - "Directory listing denied"); - } -#if !defined(NO_CGI) - } else if (match_extension(path, conn->ctx->config[CGI_EXTENSIONS])) { - if (strcmp(ri->request_method, "POST") && - strcmp(ri->request_method, "GET")) { - send_http_error(conn, 501, "Not Implemented", - "Method %s is not implemented", ri->request_method); - } else { - handle_cgi_request(conn, path); - } -#endif // !NO_CGI - } else if (match_extension(path, conn->ctx->config[SSI_EXTENSIONS])) { - handle_ssi_file_request(conn, path); - } else if (is_not_modified(conn, &st)) { - send_http_error(conn, 304, "Not Modified", ""); - } else { - handle_file_request(conn, path, &st); - } -} - -static void close_all_listening_sockets(struct mg_context *ctx) { - struct socket *sp, *tmp; - for (sp = ctx->listening_sockets; sp != NULL; sp = tmp) { - tmp = sp->next; - (void) closesocket(sp->sock); - free(sp); - } -} - -// Valid listening port specification is: [ip_address:]port[s|p] -// Examples: 80, 443s, 127.0.0.1:3128p, 1.2.3.4:8080sp -static int parse_port_string(const struct vec *vec, struct socket *so) { - struct usa *usa = &so->lsa; - int a, b, c, d, port, len; - - // MacOS needs that. If we do not zero it, subsequent bind() will fail. - memset(so, 0, sizeof(*so)); - - if (sscanf(vec->ptr, "%d.%d.%d.%d:%d%n", &a, &b, &c, &d, &port, &len) == 5) { - // IP address to bind to is specified - usa->u.sin.sin_addr.s_addr = htonl((a << 24) | (b << 16) | (c << 8) | d); - } else if (sscanf(vec->ptr, "%d%n", &port, &len) == 1) { - // Only port number is specified. Bind to all addresses - usa->u.sin.sin_addr.s_addr = htonl(INADDR_ANY); - } else { - return 0; - } - assert(len > 0 && len <= (int) vec->len); - - if (strchr("sp,", vec->ptr[len]) == NULL) { - return 0; - } - - so->is_ssl = vec->ptr[len] == 's'; - so->is_proxy = vec->ptr[len] == 'p'; - usa->len = sizeof(usa->u.sin); - usa->u.sin.sin_family = AF_INET; - usa->u.sin.sin_port = htons((uint16_t) port); - - return 1; -} - -static int set_ports_option(struct mg_context *ctx) { - const char *list = ctx->config[LISTENING_PORTS]; - int on = 1, success = 1; - SOCKET sock; - struct vec vec; - struct socket so, *listener; - - struct linger linger; - linger.l_onoff = 1; - linger.l_linger = 1; - - while (success && (list = next_option(list, &vec, NULL)) != NULL) { - if (!parse_port_string(&vec, &so)) { - cry(fc(ctx), "%s: %.*s: invalid port spec. Expecting list of: %s", - __func__, vec.len, vec.ptr, "[IP_ADDRESS:]PORT[s|p]"); - success = 0; - } else if (so.is_ssl && ctx->ssl_ctx == NULL) { - cry(fc(ctx), "Cannot add SSL socket, is -ssl_certificate option set?"); - success = 0; - } else if ((sock = socket(PF_INET, SOCK_STREAM, 6)) == INVALID_SOCKET || -#if !defined(_WIN32) - // On Windows, SO_REUSEADDR is recommended only for - // broadcast UDP sockets - setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, - sizeof(on)) != 0 || -#endif // !_WIN32 - // Set TCP keep-alive. This is needed because if HTTP-level - // keep-alive is enabled, and client resets the connection, - // server won't get TCP FIN or RST and will keep the connection - // open forever. With TCP keep-alive, next keep-alive - // handshake will figure out that the client is down and - // will close the server end. - // Thanks to Igor Klopov who suggested the patch. - setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, (void *) &on, - sizeof(on)) != 0 || - setsockopt(sock, SOL_SOCKET, SO_LINGER, (void *) &linger, - sizeof(linger)) || - bind(sock, &so.lsa.u.sa, so.lsa.len) != 0 || - listen(sock, 100) != 0) { - closesocket(sock); - cry(fc(ctx), "%s: cannot bind to %.*s: %s", __func__, - vec.len, vec.ptr, strerror(ERRNO)); - success = 0; - } else if ((listener = (struct socket *) - calloc(1, sizeof(*listener))) == NULL) { - closesocket(sock); - cry(fc(ctx), "%s: %s", __func__, strerror(ERRNO)); - success = 0; - } else { - *listener = so; - listener->sock = sock; - set_close_on_exec(listener->sock); - listener->next = ctx->listening_sockets; - ctx->listening_sockets = listener; - } - } - - if (!success) { - close_all_listening_sockets(ctx); - } - - return success; -} - -static void log_header(const struct mg_connection *conn, const char *header, - FILE *fp) { - const char *header_value; - - if ((header_value = mg_get_header(conn, header)) == NULL) { - (void) fprintf(fp, "%s", " -"); - } else { - (void) fprintf(fp, " \"%s\"", header_value); - } -} - -static void log_access(const struct mg_connection *conn) { - const struct mg_request_info *ri; - FILE *fp; - char date[64]; - - fp = conn->ctx->config[ACCESS_LOG_FILE] == NULL ? NULL : - mg_fopen(conn->ctx->config[ACCESS_LOG_FILE], "a+"); - - if (fp == NULL) - return; - - (void) strftime(date, sizeof(date), "%d/%b/%Y:%H:%M:%S %z", - localtime(&conn->birth_time)); - - ri = &conn->request_info; - - flockfile(fp); - - (void) fprintf(fp, - "%s - %s [%s] \"%s %s HTTP/%s\" %d %" INT64_FMT, - inet_ntoa(conn->client.rsa.u.sin.sin_addr), - ri->remote_user == NULL ? "-" : ri->remote_user, - date, - ri->request_method ? ri->request_method : "-", - ri->uri ? ri->uri : "-", - ri->http_version, - conn->request_info.status_code, conn->num_bytes_sent); - log_header(conn, "Referer", fp); - log_header(conn, "User-Agent", fp); - (void) fputc('\n', fp); - (void) fflush(fp); - - funlockfile(fp); - (void) fclose(fp); -} - -static int isbyte(int n) { - return n >= 0 && n <= 255; -} - -// Verify given socket address against the ACL. -// Return -1 if ACL is malformed, 0 if address is disallowed, 1 if allowed. -static int check_acl(struct mg_context *ctx, const struct usa *usa) { - int a, b, c, d, n, mask, allowed; - char flag; - uint32_t acl_subnet, acl_mask, remote_ip; - struct vec vec; - const char *list = ctx->config[ACCESS_CONTROL_LIST]; - - if (list == NULL) { - return 1; - } - - (void) memcpy(&remote_ip, &usa->u.sin.sin_addr, sizeof(remote_ip)); - - // If any ACL is set, deny by default - allowed = '-'; - - while ((list = next_option(list, &vec, NULL)) != NULL) { - mask = 32; - - if (sscanf(vec.ptr, "%c%d.%d.%d.%d%n", &flag, &a, &b, &c, &d, &n) != 5) { - cry(fc(ctx), "%s: subnet must be [+|-]x.x.x.x[/x]", __func__); - return -1; - } else if (flag != '+' && flag != '-') { - cry(fc(ctx), "%s: flag must be + or -: [%s]", __func__, vec.ptr); - return -1; - } else if (!isbyte(a)||!isbyte(b)||!isbyte(c)||!isbyte(d)) { - cry(fc(ctx), "%s: bad ip address: [%s]", __func__, vec.ptr); - return -1; - } else if (sscanf(vec.ptr + n, "/%d", &mask) == 0) { - // Do nothing, no mask specified - } else if (mask < 0 || mask > 32) { - cry(fc(ctx), "%s: bad subnet mask: %d [%s]", __func__, n, vec.ptr); - return -1; - } - - acl_subnet = (a << 24) | (b << 16) | (c << 8) | d; - acl_mask = mask ? 0xffffffffU << (32 - mask) : 0; - - if (acl_subnet == (ntohl(remote_ip) & acl_mask)) { - allowed = flag; - } - } - - return allowed == '+'; -} - -static void add_to_set(SOCKET fd, fd_set *set, int *max_fd) { - FD_SET(fd, set); - if (fd > (SOCKET) *max_fd) { - *max_fd = (int) fd; - } -} - -#if !defined(_WIN32) -static int set_uid_option(struct mg_context *ctx) { - struct passwd *pw; - const char *uid = ctx->config[RUN_AS_USER]; - int success = 0; - - if (uid == NULL) { - success = 1; - } else { - if ((pw = getpwnam(uid)) == NULL) { - cry(fc(ctx), "%s: unknown user [%s]", __func__, uid); - } else if (setgid(pw->pw_gid) == -1) { - cry(fc(ctx), "%s: setgid(%s): %s", __func__, uid, strerror(errno)); - } else if (setuid(pw->pw_uid) == -1) { - cry(fc(ctx), "%s: setuid(%s): %s", __func__, uid, strerror(errno)); - } else { - success = 1; - } - } - - return success; -} -#endif // !_WIN32 - -#if !defined(NO_SSL) -static pthread_mutex_t *ssl_mutexes; - -static void ssl_locking_callback(int mode, int mutex_num, const char *file, - int line) { - line = 0; // Unused - file = NULL; // Unused - - if (mode & CRYPTO_LOCK) { - (void) pthread_mutex_lock(&ssl_mutexes[mutex_num]); - } else { - (void) pthread_mutex_unlock(&ssl_mutexes[mutex_num]); - } -} - -static unsigned long ssl_id_callback(void) { - return (unsigned long) pthread_self(); -} - -#if !defined(NO_SSL_DL) -static int load_dll(struct mg_context *ctx, const char *dll_name, - struct ssl_func *sw) { - union {void *p; void (*fp)(void);} u; - void *dll_handle; - struct ssl_func *fp; - - if ((dll_handle = dlopen(dll_name, RTLD_LAZY)) == NULL) { - cry(fc(ctx), "%s: cannot load %s", __func__, dll_name); - return 0; - } - - for (fp = sw; fp->name != NULL; fp++) { -#ifdef _WIN32 - // GetProcAddress() returns pointer to function - u.fp = (void (*)(void)) dlsym(dll_handle, fp->name); -#else - // dlsym() on UNIX returns void *. ISO C forbids casts of data pointers to - // function pointers. We need to use a union to make a cast. - u.p = dlsym(dll_handle, fp->name); -#endif // _WIN32 - if (u.fp == NULL) { - cry(fc(ctx), "%s: %s: cannot find %s", __func__, dll_name, fp->name); - return 0; - } else { - fp->ptr = u.fp; - } - } - - return 1; -} -#endif // NO_SSL_DL - -// Dynamically load SSL library. Set up ctx->ssl_ctx pointer. -static int set_ssl_option(struct mg_context *ctx) { - struct mg_request_info request_info; - SSL_CTX *CTX; - int i, size; - const char *pem = ctx->config[SSL_CERTIFICATE]; - const char *chain = ctx->config[SSL_CHAIN_FILE]; - - if (pem == NULL) { - return 1; - } - -#if !defined(NO_SSL_DL) - if (!load_dll(ctx, SSL_LIB, ssl_sw) || - !load_dll(ctx, CRYPTO_LIB, crypto_sw)) { - return 0; - } -#endif // NO_SSL_DL - - // Initialize SSL crap - SSL_library_init(); - SSL_load_error_strings(); - - if ((CTX = SSL_CTX_new(SSLv23_server_method())) == NULL) { - cry(fc(ctx), "SSL_CTX_new error: %s", ssl_error()); - } else if (ctx->user_callback != NULL) { - memset(&request_info, 0, sizeof(request_info)); - request_info.user_data = ctx->user_data; - ctx->user_callback(MG_INIT_SSL, (struct mg_connection *) CTX, - &request_info); - } - - if (CTX != NULL && SSL_CTX_use_certificate_file(CTX, pem, - SSL_FILETYPE_PEM) == 0) { - cry(fc(ctx), "%s: cannot open %s: %s", __func__, pem, ssl_error()); - return 0; - } else if (CTX != NULL && SSL_CTX_use_PrivateKey_file(CTX, pem, - SSL_FILETYPE_PEM) == 0) { - cry(fc(ctx), "%s: cannot open %s: %s", NULL, pem, ssl_error()); - return 0; - } - - if (CTX != NULL && chain != NULL && - SSL_CTX_use_certificate_chain_file(CTX, chain) == 0) { - cry(fc(ctx), "%s: cannot open %s: %s", NULL, chain, ssl_error()); - return 0; - } - - // Initialize locking callbacks, needed for thread safety. - // http://www.openssl.org/support/faq.html#PROG1 - size = sizeof(pthread_mutex_t) * CRYPTO_num_locks(); - if ((ssl_mutexes = (pthread_mutex_t *) malloc((size_t)size)) == NULL) { - cry(fc(ctx), "%s: cannot allocate mutexes: %s", __func__, ssl_error()); - return 0; - } - - for (i = 0; i < CRYPTO_num_locks(); i++) { - pthread_mutex_init(&ssl_mutexes[i], NULL); - } - - CRYPTO_set_locking_callback(&ssl_locking_callback); - CRYPTO_set_id_callback(&ssl_id_callback); - - // Done with everything. Save the context. - ctx->ssl_ctx = CTX; - - return 1; -} - -static void uninitialize_ssl(struct mg_context *ctx) { - int i; - if (ctx->ssl_ctx != NULL) { - CRYPTO_set_locking_callback(NULL); - for (i = 0; i < CRYPTO_num_locks(); i++) { - pthread_mutex_destroy(&ssl_mutexes[i]); - } - CRYPTO_set_locking_callback(NULL); - CRYPTO_set_id_callback(NULL); - } -} -#endif // !NO_SSL - -static int set_gpass_option(struct mg_context *ctx) { - struct mgstat mgstat; - const char *path = ctx->config[GLOBAL_PASSWORDS_FILE]; - return path == NULL || mg_stat(path, &mgstat) == 0; -} - -static int set_acl_option(struct mg_context *ctx) { - struct usa fake; - return check_acl(ctx, &fake) != -1; -} - -static void reset_per_request_attributes(struct mg_connection *conn) { - struct mg_request_info *ri = &conn->request_info; - - // Reset request info attributes. DO NOT TOUCH is_ssl, remote_ip, remote_port - if (ri->remote_user != NULL) { - free((void *) ri->remote_user); - } - ri->remote_user = ri->request_method = ri->uri = ri->http_version = NULL; - ri->num_headers = 0; - ri->status_code = -1; - - conn->num_bytes_sent = conn->consumed_content = 0; - conn->content_len = -1; - conn->request_len = conn->data_len = 0; -} - -static void close_socket_gracefully(SOCKET sock) { - char buf[BUFSIZ]; - int n; - - // Send FIN to the client - (void) shutdown(sock, SHUT_WR); - set_non_blocking_mode(sock); - - // Read and discard pending data. If we do not do that and close the - // socket, the data in the send buffer may be discarded. This - // behaviour is seen on Windows, when client keeps sending data - // when server decide to close the connection; then when client - // does recv() it gets no data back. - do { - n = pull(NULL, sock, NULL, buf, sizeof(buf)); - } while (n > 0); - - // Now we know that our FIN is ACK-ed, safe to close - (void) closesocket(sock); -} - -static void close_connection(struct mg_connection *conn) { - if (conn->ssl) { - SSL_free(conn->ssl); - conn->ssl = NULL; - } - - if (conn->client.sock != INVALID_SOCKET) { - close_socket_gracefully(conn->client.sock); - } -} - -static void discard_current_request_from_buffer(struct mg_connection *conn) { - int buffered_len, body_len; - - buffered_len = conn->data_len - conn->request_len; - assert(buffered_len >= 0); - - if (conn->content_len == -1) { - body_len = 0; - } else if (conn->content_len < (int64_t) buffered_len) { - body_len = (int) conn->content_len; - } else { - body_len = buffered_len; - } - - conn->data_len -= conn->request_len + body_len; - memmove(conn->buf, conn->buf + conn->request_len + body_len, - (size_t) conn->data_len); -} - -static int parse_url(const char *url, char *host, int *port) { - int len; - - if (sscanf(url, "%*[htps]://%1024[^:]:%d%n", host, port, &len) == 2 || - sscanf(url, "%1024[^:]:%d%n", host, port, &len) == 2) { - } else if (sscanf(url, "%*[htps]://%1024[^/]%n", host, &len) == 1) { - *port = 80; - } else { - sscanf(url, "%1024[^/]%n", host, &len); - *port = 80; - } - DEBUG_TRACE(("Host:%s, port:%d", host, *port)); - - return len; -} - -static void handle_proxy_request(struct mg_connection *conn) { - struct mg_request_info *ri = &conn->request_info; - char host[1025], buf[BUFSIZ]; - int port, is_ssl, len, i, n; - - DEBUG_TRACE(("URL: %s", ri->uri)); - if (ri->uri == NULL || - ri->uri[0] == '/' || - (len = parse_url(ri->uri, host, &port)) == 0) { - return; - } - - if (conn->peer == NULL) { - is_ssl = !strcmp(ri->request_method, "CONNECT"); - if ((conn->peer = mg_connect(conn, host, port, is_ssl)) == NULL) { - return; - } - conn->peer->client.is_ssl = is_ssl; - } - - // Forward client's request to the target - mg_printf(conn->peer, "%s %s HTTP/%s\r\n", ri->request_method, ri->uri + len, - ri->http_version); - - // And also all headers. TODO(lsm): anonymize! - for (i = 0; i < ri->num_headers; i++) { - mg_printf(conn->peer, "%s: %s\r\n", ri->http_headers[i].name, - ri->http_headers[i].value); - } - // End of headers, final newline - mg_write(conn->peer, "\r\n", 2); - - // Read and forward body data if any - if (!strcmp(ri->request_method, "POST")) { - forward_body_data(conn, NULL, conn->peer->client.sock, conn->peer->ssl); - } - - // Read data from the target and forward it to the client - while ((n = pull(NULL, conn->peer->client.sock, conn->peer->ssl, - buf, sizeof(buf))) > 0) { - if (mg_write(conn, buf, (size_t)n) != n) { - break; - } - } - - if (!conn->peer->client.is_ssl) { - close_connection(conn->peer); - free(conn->peer); - conn->peer = NULL; - } -} - -static int is_valid_uri(const char *uri) { - // Conform to http://www.w3.org/Protocols/rfc2616/rfc2616-sec5.html#sec5.1.2 - // URI can be an asterisk (*) or should start with slash. - return (uri[0] == '/' || (uri[0] == '*' && uri[1] == '\0')); -} - -static void process_new_connection(struct mg_connection *conn) { - struct mg_request_info *ri = &conn->request_info; - int keep_alive_enabled; - const char *cl; - - keep_alive_enabled = !strcmp(conn->ctx->config[ENABLE_KEEP_ALIVE], "yes"); - - do { - reset_per_request_attributes(conn); - - // If next request is not pipelined, read it in - if ((conn->request_len = get_request_len(conn->buf, conn->data_len)) == 0) { - conn->request_len = read_request(NULL, conn->client.sock, conn->ssl, - conn->buf, conn->buf_size, &conn->data_len); - } - assert(conn->data_len >= conn->request_len); - if (conn->request_len == 0 && conn->data_len == conn->buf_size) { - send_http_error(conn, 413, "Request Too Large", ""); - return; - } if (conn->request_len <= 0) { - return; // Remote end closed the connection - } - - // Nul-terminate the request cause parse_http_request() uses sscanf - conn->buf[conn->request_len - 1] = '\0'; - if (!parse_http_request(conn->buf, ri) || - (!conn->client.is_proxy && !is_valid_uri(ri->uri))) { - // Do not put garbage in the access log, just send it back to the client - send_http_error(conn, 400, "Bad Request", - "Cannot parse HTTP request: [%.*s]", conn->data_len, conn->buf); - } else if (strcmp(ri->http_version, "1.0") && - strcmp(ri->http_version, "1.1")) { - // Request seems valid, but HTTP version is strange - send_http_error(conn, 505, "HTTP version not supported", ""); - log_access(conn); - } else { - // Request is valid, handle it - cl = get_header(ri, "Content-Length"); - conn->content_len = cl == NULL ? -1 : strtoll(cl, NULL, 10); - conn->birth_time = time(NULL); - if (conn->client.is_proxy) { - handle_proxy_request(conn); - } else { - handle_request(conn); - } - log_access(conn); - discard_current_request_from_buffer(conn); - } - // conn->peer is not NULL only for SSL-ed proxy connections - } while (conn->ctx->stop_flag == 0 && - (conn->peer || (keep_alive_enabled && should_keep_alive(conn)))); -} - -// Worker threads take accepted socket from the queue -static int consume_socket(struct mg_context *ctx, struct socket *sp) { - (void) pthread_mutex_lock(&ctx->mutex); - DEBUG_TRACE(("going idle")); - - // If the queue is empty, wait. We're idle at this point. - while (ctx->sq_head == ctx->sq_tail && ctx->stop_flag == 0) { - pthread_cond_wait(&ctx->sq_full, &ctx->mutex); - } - - // If we're stopping, sq_head may be equal to sq_tail. - if (ctx->sq_head > ctx->sq_tail) { - // Copy socket from the queue and increment tail - *sp = ctx->queue[ctx->sq_tail % ARRAY_SIZE(ctx->queue)]; - ctx->sq_tail++; - DEBUG_TRACE(("grabbed socket %d, going busy", sp->sock)); - - // Wrap pointers if needed - while (ctx->sq_tail > (int) ARRAY_SIZE(ctx->queue)) { - ctx->sq_tail -= ARRAY_SIZE(ctx->queue); - ctx->sq_head -= ARRAY_SIZE(ctx->queue); - } - } - - (void) pthread_cond_signal(&ctx->sq_empty); - (void) pthread_mutex_unlock(&ctx->mutex); - - return !ctx->stop_flag; -} - -static void worker_thread(struct mg_context *ctx) { - struct mg_connection *conn; - int buf_size = atoi(ctx->config[MAX_REQUEST_SIZE]); - - conn = (struct mg_connection *) calloc(1, sizeof(*conn) + buf_size); - conn->buf_size = buf_size; - conn->buf = (char *) (conn + 1); - assert(conn != NULL); - - // Call consume_socket() even when ctx->stop_flag > 0, to let it signal - // sq_empty condvar to wake up the master waiting in produce_socket() - while (consume_socket(ctx, &conn->client)) { - conn->birth_time = time(NULL); - conn->ctx = ctx; - - // Fill in IP, port info early so even if SSL setup below fails, - // error handler would have the corresponding info. - // Thanks to Johannes Winkelmann for the patch. - conn->request_info.remote_port = ntohs(conn->client.rsa.u.sin.sin_port); - memcpy(&conn->request_info.remote_ip, - &conn->client.rsa.u.sin.sin_addr.s_addr, 4); - conn->request_info.remote_ip = ntohl(conn->request_info.remote_ip); - conn->request_info.is_ssl = conn->client.is_ssl; - - if (!conn->client.is_ssl || - (conn->client.is_ssl && sslize(conn, SSL_accept))) { - process_new_connection(conn); - } - - close_connection(conn); - } - free(conn); - - // Signal master that we're done with connection and exiting - (void) pthread_mutex_lock(&ctx->mutex); - ctx->num_threads--; - (void) pthread_cond_signal(&ctx->cond); - assert(ctx->num_threads >= 0); - (void) pthread_mutex_unlock(&ctx->mutex); - - DEBUG_TRACE(("exiting")); -} - -// Master thread adds accepted socket to a queue -static void produce_socket(struct mg_context *ctx, const struct socket *sp) { - (void) pthread_mutex_lock(&ctx->mutex); - - // If the queue is full, wait - while (ctx->stop_flag == 0 && - ctx->sq_head - ctx->sq_tail >= (int) ARRAY_SIZE(ctx->queue)) { - (void) pthread_cond_wait(&ctx->sq_empty, &ctx->mutex); - } - - if (ctx->sq_head - ctx->sq_tail < (int) ARRAY_SIZE(ctx->queue)) { - // Copy socket to the queue and increment head - ctx->queue[ctx->sq_head % ARRAY_SIZE(ctx->queue)] = *sp; - ctx->sq_head++; - DEBUG_TRACE(("queued socket %d", sp->sock)); - } - - (void) pthread_cond_signal(&ctx->sq_full); - (void) pthread_mutex_unlock(&ctx->mutex); -} - -static void accept_new_connection(const struct socket *listener, - struct mg_context *ctx) { - struct socket accepted; - int allowed; - - accepted.rsa.len = sizeof(accepted.rsa.u.sin); - accepted.lsa = listener->lsa; - accepted.sock = accept(listener->sock, &accepted.rsa.u.sa, &accepted.rsa.len); - if (accepted.sock != INVALID_SOCKET) { - allowed = check_acl(ctx, &accepted.rsa); - if (allowed) { - // Put accepted socket structure into the queue - DEBUG_TRACE(("accepted socket %d", accepted.sock)); - accepted.is_ssl = listener->is_ssl; - accepted.is_proxy = listener->is_proxy; - produce_socket(ctx, &accepted); - } else { - cry(fc(ctx), "%s: %s is not allowed to connect", - __func__, inet_ntoa(accepted.rsa.u.sin.sin_addr)); - (void) closesocket(accepted.sock); - } - } -} - -static void master_thread(struct mg_context *ctx) { - fd_set read_set; - struct timeval tv; - struct socket *sp; - int max_fd; - - while (ctx->stop_flag == 0) { - FD_ZERO(&read_set); - max_fd = -1; - - // Add listening sockets to the read set - for (sp = ctx->listening_sockets; sp != NULL; sp = sp->next) { - add_to_set(sp->sock, &read_set, &max_fd); - } - - tv.tv_sec = 0; - tv.tv_usec = 200 * 1000; - - if (select(max_fd + 1, &read_set, NULL, NULL, &tv) < 0) { -#ifdef _WIN32 - // On windows, if read_set and write_set are empty, - // select() returns "Invalid parameter" error - // (at least on my Windows XP Pro). So in this case, we sleep here. - sleep(1); -#endif // _WIN32 - } else { - for (sp = ctx->listening_sockets; sp != NULL; sp = sp->next) { - if (ctx->stop_flag == 0 && FD_ISSET(sp->sock, &read_set)) { - accept_new_connection(sp, ctx); - } - } - } - } - DEBUG_TRACE(("stopping workers")); - - // Stop signal received: somebody called mg_stop. Quit. - close_all_listening_sockets(ctx); - - // Wakeup workers that are waiting for connections to handle. - pthread_cond_broadcast(&ctx->sq_full); - - // Wait until all threads finish - (void) pthread_mutex_lock(&ctx->mutex); - while (ctx->num_threads > 0) { - (void) pthread_cond_wait(&ctx->cond, &ctx->mutex); - } - (void) pthread_mutex_unlock(&ctx->mutex); - - // All threads exited, no sync is needed. Destroy mutex and condvars - (void) pthread_mutex_destroy(&ctx->mutex); - (void) pthread_cond_destroy(&ctx->cond); - (void) pthread_cond_destroy(&ctx->sq_empty); - (void) pthread_cond_destroy(&ctx->sq_full); - -#if !defined(NO_SSL) - uninitialize_ssl(ctx); -#endif - - // Signal mg_stop() that we're done - ctx->stop_flag = 2; - - DEBUG_TRACE(("exiting")); -} - -static void free_context(struct mg_context *ctx) { - int i; - - // Deallocate config parameters - for (i = 0; i < NUM_OPTIONS; i++) { - if (ctx->config[i] != NULL) - free(ctx->config[i]); - } - - // Deallocate SSL context - if (ctx->ssl_ctx != NULL) { - SSL_CTX_free(ctx->ssl_ctx); - } -#ifndef NO_SSL - if (ssl_mutexes != NULL) { - free(ssl_mutexes); - } -#endif // !NO_SSL - - // Deallocate context itself - free(ctx); -} - -void mg_stop(struct mg_context *ctx) { - ctx->stop_flag = 1; - - // Wait until mg_fini() stops - while (ctx->stop_flag != 2) { - (void) sleep(0); - } - free_context(ctx); - -#if defined(_WIN32) && !defined(__SYMBIAN32__) - (void) WSACleanup(); -#endif // _WIN32 -} - -struct mg_context *mg_start(mg_callback_t user_callback, void *user_data, - const char **options) { - struct mg_context *ctx; - const char *name, *value, *default_value; - int i; - -#if defined(_WIN32) && !defined(__SYMBIAN32__) - WSADATA data; - WSAStartup(MAKEWORD(2,2), &data); -#endif // _WIN32 - - // Allocate context and initialize reasonable general case defaults. - // TODO(lsm): do proper error handling here. - ctx = (struct mg_context *) calloc(1, sizeof(*ctx)); - ctx->user_callback = user_callback; - ctx->user_data = user_data; - - while (options && (name = *options++) != NULL) { - if ((i = get_option_index(name)) == -1) { - cry(fc(ctx), "Invalid option: %s", name); - free_context(ctx); - return NULL; - } else if ((value = *options++) == NULL) { - cry(fc(ctx), "%s: option value cannot be NULL", name); - free_context(ctx); - return NULL; - } - ctx->config[i] = mg_strdup(value); - DEBUG_TRACE(("[%s] -> [%s]", name, value)); - } - - // Set default value if needed - for (i = 0; config_options[i * ENTRIES_PER_CONFIG_OPTION] != NULL; i++) { - default_value = config_options[i * ENTRIES_PER_CONFIG_OPTION + 2]; - if (ctx->config[i] == NULL && default_value != NULL) { - ctx->config[i] = mg_strdup(default_value); - DEBUG_TRACE(("Setting default: [%s] -> [%s]", - config_options[i * ENTRIES_PER_CONFIG_OPTION + 1], - default_value)); - } - } - - // NOTE(lsm): order is important here. SSL certificates must - // be initialized before listening ports. UID must be set last. - if (!set_gpass_option(ctx) || -#if !defined(NO_SSL) - !set_ssl_option(ctx) || -#endif - !set_ports_option(ctx) || -#if !defined(_WIN32) - !set_uid_option(ctx) || -#endif - !set_acl_option(ctx)) { - free_context(ctx); - return NULL; - } - -#if !defined(_WIN32) && !defined(__SYMBIAN32__) - // Ignore SIGPIPE signal, so if browser cancels the request, it - // won't kill the whole process. - (void) signal(SIGPIPE, SIG_IGN); -#endif // !_WIN32 - - (void) pthread_mutex_init(&ctx->mutex, NULL); - (void) pthread_cond_init(&ctx->cond, NULL); - (void) pthread_cond_init(&ctx->sq_empty, NULL); - (void) pthread_cond_init(&ctx->sq_full, NULL); - - // Start master (listening) thread - start_thread(ctx, (mg_thread_func_t) master_thread, ctx); - - // Start worker threads - for (i = 0; i < atoi(ctx->config[NUM_THREADS]); i++) { - if (start_thread(ctx, (mg_thread_func_t) worker_thread, ctx) != 0) { - cry(fc(ctx), "Cannot start worker thread: %d", ERRNO); - } else { - ctx->num_threads++; - } - } - - return ctx; -} diff --git a/third_party/mongoose/mongoose.h b/third_party/mongoose/mongoose.h deleted file mode 100644 index 8793b25..0000000 --- a/third_party/mongoose/mongoose.h +++ /dev/null @@ -1,233 +0,0 @@ -// Copyright (c) 2004-2011 Sergey Lyubka -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#ifndef MONGOOSE_HEADER_INCLUDED -#define MONGOOSE_HEADER_INCLUDED - -#include <stddef.h> - -#ifdef __cplusplus -extern "C" { -#endif // __cplusplus - -struct mg_context; // Handle for the HTTP service itself -struct mg_connection; // Handle for the individual connection - - -// This structure contains information about the HTTP request. -struct mg_request_info { - void *user_data; // User-defined pointer passed to mg_start() - char *request_method; // "GET", "POST", etc - char *uri; // URL-decoded URI - char *http_version; // E.g. "1.0", "1.1" - char *query_string; // \0 - terminated - char *remote_user; // Authenticated user - char *log_message; // Mongoose error log message - long remote_ip; // Client's IP address - int remote_port; // Client's port - int status_code; // HTTP reply status code - int is_ssl; // 1 if SSL-ed, 0 if not - int num_headers; // Number of headers - struct mg_header { - char *name; // HTTP header name - char *value; // HTTP header value - } http_headers[64]; // Maximum 64 headers -}; - -// Various events on which user-defined function is called by Mongoose. -enum mg_event { - MG_NEW_REQUEST, // New HTTP request has arrived from the client - MG_HTTP_ERROR, // HTTP error must be returned to the client - MG_EVENT_LOG, // Mongoose logs an event, request_info.log_message - MG_INIT_SSL // Mongoose initializes SSL. Instead of mg_connection *, - // SSL context is passed to the callback function. -}; - -// Prototype for the user-defined function. Mongoose calls this function -// on every event mentioned above. -// -// Parameters: -// event: which event has been triggered. -// conn: opaque connection handler. Could be used to read, write data to the -// client, etc. See functions below that accept "mg_connection *". -// request_info: Information about HTTP request. -// -// Return: -// If handler returns non-NULL, that means that handler has processed the -// request by sending appropriate HTTP reply to the client. Mongoose treats -// the request as served. -// If callback returns NULL, that means that callback has not processed -// the request. Handler must not send any data to the client in this case. -// Mongoose proceeds with request handling as if nothing happened. -typedef void * (*mg_callback_t)(enum mg_event event, - struct mg_connection *conn, - const struct mg_request_info *request_info); - - -// Start web server. -// -// Parameters: -// callback: user defined event handling function or NULL. -// options: NULL terminated list of option_name, option_value pairs that -// specify Mongoose configuration parameters. -// -// Side-effects: on UNIX, ignores SIGCHLD and SIGPIPE signals. If custom -// processing is required for these, signal handlers must be set up -// after calling mg_start(). -// -// -// Example: -// const char *options[] = { -// "document_root", "/var/www", -// "listening_ports", "80,443s", -// NULL -// }; -// struct mg_context *ctx = mg_start(&my_func, NULL, options); -// -// Please refer to http://code.google.com/p/mongoose/wiki/MongooseManual -// for the list of valid option and their possible values. -// -// Return: -// web server context, or NULL on error. -struct mg_context *mg_start(mg_callback_t callback, void *user_data, - const char **options); - - -// Stop the web server. -// -// Must be called last, when an application wants to stop the web server and -// release all associated resources. This function blocks until all Mongoose -// threads are stopped. Context pointer becomes invalid. -void mg_stop(struct mg_context *); - - -// Get the value of particular configuration parameter. -// The value returned is read-only. Mongoose does not allow changing -// configuration at run time. -// If given parameter name is not valid, NULL is returned. For valid -// names, return value is guaranteed to be non-NULL. If parameter is not -// set, zero-length string is returned. -const char *mg_get_option(const struct mg_context *ctx, const char *name); - - -// Return array of strings that represent valid configuration options. -// For each option, a short name, long name, and default value is returned. -// Array is NULL terminated. -const char **mg_get_valid_option_names(void); - - -// Add, edit or delete the entry in the passwords file. -// -// This function allows an application to manipulate .htpasswd files on the -// fly by adding, deleting and changing user records. This is one of the -// several ways of implementing authentication on the server side. For another, -// cookie-based way please refer to the examples/chat.c in the source tree. -// -// If password is not NULL, entry is added (or modified if already exists). -// If password is NULL, entry is deleted. -// -// Return: -// 1 on success, 0 on error. -int mg_modify_passwords_file(const char *passwords_file_name, - const char *domain, - const char *user, - const char *password); - -// Send data to the client. -int mg_write(struct mg_connection *, const void *buf, size_t len); - - -// Send data to the browser using printf() semantics. -// -// Works exactly like mg_write(), but allows to do message formatting. -// Note that mg_printf() uses internal buffer of size IO_BUF_SIZE -// (8 Kb by default) as temporary message storage for formatting. Do not -// print data that is bigger than that, otherwise it will be truncated. -int mg_printf(struct mg_connection *, const char *fmt, ...); - - -// Send contents of the entire file together with HTTP headers. -void mg_send_file(struct mg_connection *conn, const char *path); - - -// Read data from the remote end, return number of bytes read. -int mg_read(struct mg_connection *, void *buf, size_t len); - - -// Get the value of particular HTTP header. -// -// This is a helper function. It traverses request_info->http_headers array, -// and if the header is present in the array, returns its value. If it is -// not present, NULL is returned. -const char *mg_get_header(const struct mg_connection *, const char *name); - - -// Get a value of particular form variable. -// -// Parameters: -// data: pointer to form-uri-encoded buffer. This could be either POST data, -// or request_info.query_string. -// data_len: length of the encoded data. -// var_name: variable name to decode from the buffer -// buf: destination buffer for the decoded variable -// buf_len: length of the destination buffer -// -// Return: -// On success, length of the decoded variable. -// On error, -1 (variable not found, or destination buffer is too small). -// -// Destination buffer is guaranteed to be '\0' - terminated. In case of -// failure, dst[0] == '\0'. -int mg_get_var(const char *data, size_t data_len, - const char *var_name, char *buf, size_t buf_len); - -// Fetch value of certain cookie variable into the destination buffer. -// -// Destination buffer is guaranteed to be '\0' - terminated. In case of -// failure, dst[0] == '\0'. Note that RFC allows many occurrences of the same -// parameter. This function returns only first occurrence. -// -// Return: -// On success, value length. -// On error, 0 (either "Cookie:" header is not present at all, or the -// requested parameter is not found, or destination buffer is too small -// to hold the value). -int mg_get_cookie(const struct mg_connection *, - const char *cookie_name, char *buf, size_t buf_len); - - -// Return Mongoose version. -const char *mg_version(void); - - -// MD5 hash given strings. -// Buffer 'buf' must be 33 bytes long. Varargs is a NULL terminated list of -// asciiz strings. When function returns, buf will contain human-readable -// MD5 hash. Example: -// char buf[33]; -// mg_md5(buf, "aa", "bb", NULL); -void mg_md5(char *buf, ...); - - -#ifdef __cplusplus -} -#endif // __cplusplus - -#endif // MONGOOSE_HEADER_INCLUDED |