diff options
Diffstat (limited to 'src/crypto/bio/bio_test.c')
-rw-r--r-- | src/crypto/bio/bio_test.c | 362 |
1 files changed, 362 insertions, 0 deletions
diff --git a/src/crypto/bio/bio_test.c b/src/crypto/bio/bio_test.c new file mode 100644 index 0000000..cad4cf3 --- /dev/null +++ b/src/crypto/bio/bio_test.c @@ -0,0 +1,362 @@ +/* Copyright (c) 2014, Google Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ + +#if !defined(_POSIX_C_SOURCE) +#define _POSIX_C_SOURCE 201410L +#endif + +#include <openssl/base.h> + +#if !defined(OPENSSL_WINDOWS) +#include <arpa/inet.h> +#include <fcntl.h> +#include <netinet/in.h> +#include <string.h> +#include <sys/socket.h> +#include <unistd.h> +#else +#include <io.h> +#pragma warning(push, 3) +#include <WinSock2.h> +#include <WS2tcpip.h> +#pragma warning(pop) +#endif + +#include <openssl/bio.h> +#include <openssl/crypto.h> +#include <openssl/err.h> + +#define MIN(a, b) ((a < b) ? a : b) + +#if !defined(OPENSSL_WINDOWS) +static int closesocket(int sock) { + return close(sock); +} + +static void print_socket_error(const char *func) { + perror(func); +} +#else +static void print_socket_error(const char *func) { + fprintf(stderr, "%s: %d\n", func, WSAGetLastError()); +} +#endif + +static int test_socket_connect(void) { + int listening_sock = socket(AF_INET, SOCK_STREAM, 0); + int sock; + struct sockaddr_in sin; + socklen_t sockaddr_len = sizeof(sin); + static const char kTestMessage[] = "test"; + char hostname[80], buf[5]; + BIO *bio; + + memset(&sin, 0, sizeof(sin)); + sin.sin_family = AF_INET; + if (!inet_pton(AF_INET, "127.0.0.1", &sin.sin_addr)) { + print_socket_error("inet_pton"); + return 0; + } + + if (bind(listening_sock, (struct sockaddr *)&sin, sizeof(sin)) != 0) { + print_socket_error("bind"); + return 0; + } + + if (listen(listening_sock, 1)) { + print_socket_error("listen"); + return 0; + } + + if (getsockname(listening_sock, (struct sockaddr *)&sin, &sockaddr_len) || + sockaddr_len != sizeof(sin)) { + print_socket_error("getsockname"); + return 0; + } + + BIO_snprintf(hostname, sizeof(hostname), "%s:%d", "127.0.0.1", + ntohs(sin.sin_port)); + bio = BIO_new_connect(hostname); + if (!bio) { + fprintf(stderr, "BIO_new_connect failed.\n"); + return 0; + } + + if (BIO_write(bio, kTestMessage, sizeof(kTestMessage)) != + sizeof(kTestMessage)) { + fprintf(stderr, "BIO_write failed.\n"); + BIO_print_errors_fp(stderr); + return 0; + } + + sock = accept(listening_sock, (struct sockaddr *) &sin, &sockaddr_len); + if (sock < 0) { + print_socket_error("accept"); + return 0; + } + + if (recv(sock, buf, sizeof(buf), 0) != sizeof(kTestMessage)) { + print_socket_error("read"); + return 0; + } + + if (memcmp(buf, kTestMessage, sizeof(kTestMessage))) { + return 0; + } + + closesocket(sock); + closesocket(listening_sock); + BIO_free(bio); + + return 1; +} + + +/* bio_read_zero_copy_wrapper is a wrapper around the zero-copy APIs to make + * testing easier. */ +static size_t bio_read_zero_copy_wrapper(BIO *bio, uint8_t *data, size_t len) { + uint8_t *read_buf; + size_t read_buf_offset; + size_t available_bytes; + size_t len_read = 0; + + do { + if (!BIO_zero_copy_get_read_buf(bio, &read_buf, &read_buf_offset, + &available_bytes)) { + return 0; + } + + available_bytes = MIN(available_bytes, len - len_read); + memmove(data + len_read, read_buf + read_buf_offset, available_bytes); + + BIO_zero_copy_get_read_buf_done(bio, available_bytes); + + len_read += available_bytes; + } while (len - len_read > 0 && available_bytes > 0); + + return len_read; +} + +/* bio_write_zero_copy_wrapper is a wrapper around the zero-copy APIs to make + * testing easier. */ +static size_t bio_write_zero_copy_wrapper(BIO *bio, const uint8_t *data, + size_t len) { + uint8_t *write_buf; + size_t write_buf_offset; + size_t available_bytes; + size_t len_written = 0; + + do { + if (!BIO_zero_copy_get_write_buf(bio, &write_buf, &write_buf_offset, + &available_bytes)) { + return 0; + } + + available_bytes = MIN(available_bytes, len - len_written); + memmove(write_buf + write_buf_offset, data + len_written, available_bytes); + + BIO_zero_copy_get_write_buf_done(bio, available_bytes); + + len_written += available_bytes; + } while (len - len_written > 0 && available_bytes > 0); + + return len_written; +} + +static int test_zero_copy_bio_pairs(void) { + /* Test read and write, especially triggering the ring buffer wrap-around.*/ + BIO* bio1; + BIO* bio2; + size_t i, j; + uint8_t bio1_application_send_buffer[1024]; + uint8_t bio2_application_recv_buffer[1024]; + size_t total_read = 0; + size_t total_write = 0; + uint8_t* write_buf; + size_t write_buf_offset; + size_t available_bytes; + size_t bytes_left; + + const size_t kLengths[] = {254, 255, 256, 257, 510, 511, 512, 513}; + + /* These trigger ring buffer wrap around. */ + const size_t kPartialLengths[] = {0, 1, 2, 3, 128, 255, 256, 257, 511, 512}; + + static const size_t kBufferSize = 512; + + srand(1); + for (i = 0; i < sizeof(bio1_application_send_buffer); i++) { + bio1_application_send_buffer[i] = rand() & 255; + } + + /* Transfer bytes from bio1_application_send_buffer to + * bio2_application_recv_buffer in various ways. */ + for (i = 0; i < sizeof(kLengths) / sizeof(kLengths[0]); i++) { + for (j = 0; j < sizeof(kPartialLengths) / sizeof(kPartialLengths[0]); j++) { + total_write = 0; + total_read = 0; + + BIO_new_bio_pair(&bio1, kBufferSize, &bio2, kBufferSize); + + total_write += bio_write_zero_copy_wrapper( + bio1, bio1_application_send_buffer, kLengths[i]); + + /* This tests interleaved read/write calls. Do a read between zero copy + * write calls. */ + if (!BIO_zero_copy_get_write_buf(bio1, &write_buf, &write_buf_offset, + &available_bytes)) { + return 0; + } + + /* Free kPartialLengths[j] bytes in the beginning of bio1 write buffer. + * This enables ring buffer wrap around for the next write. */ + total_read += BIO_read(bio2, bio2_application_recv_buffer + total_read, + kPartialLengths[j]); + + size_t interleaved_write_len = MIN(kPartialLengths[j], available_bytes); + + /* Write the data for the interleaved write call. If the buffer becomes + * empty after a read, the write offset is normally set to 0. Check that + * this does not happen for interleaved read/write and that + * |write_buf_offset| is still valid. */ + memcpy(write_buf + write_buf_offset, + bio1_application_send_buffer + total_write, interleaved_write_len); + if (BIO_zero_copy_get_write_buf_done(bio1, interleaved_write_len)) { + total_write += interleaved_write_len; + } + + /* Do another write in case |write_buf_offset| was wrapped */ + total_write += bio_write_zero_copy_wrapper( + bio1, bio1_application_send_buffer + total_write, + kPartialLengths[j] - interleaved_write_len); + + /* Drain the rest. */ + bytes_left = BIO_pending(bio2); + total_read += bio_read_zero_copy_wrapper( + bio2, bio2_application_recv_buffer + total_read, bytes_left); + + BIO_free(bio1); + BIO_free(bio2); + + if (total_read != total_write) { + fprintf(stderr, "Lengths not equal in round (%u, %u)\n", (unsigned)i, + (unsigned)j); + return 0; + } + if (total_read > kLengths[i] + kPartialLengths[j]) { + fprintf(stderr, "Bad lengths in round (%u, %u)\n", (unsigned)i, + (unsigned)j); + return 0; + } + if (memcmp(bio1_application_send_buffer, bio2_application_recv_buffer, + total_read) != 0) { + fprintf(stderr, "Buffers not equal in round (%u, %u)\n", (unsigned)i, + (unsigned)j); + return 0; + } + } + } + + return 1; +} + +static int test_printf(void) { + /* Test a short output, a very long one, and various sizes around + * 256 (the size of the buffer) to ensure edge cases are correct. */ + static const size_t kLengths[] = { 5, 250, 251, 252, 253, 254, 1023 }; + BIO *bio; + char string[1024]; + int ret; + const uint8_t *contents; + size_t i, len; + + bio = BIO_new(BIO_s_mem()); + if (!bio) { + fprintf(stderr, "BIO_new failed\n"); + return 0; + } + + for (i = 0; i < sizeof(kLengths) / sizeof(kLengths[0]); i++) { + if (kLengths[i] >= sizeof(string)) { + fprintf(stderr, "Bad test string length\n"); + return 0; + } + memset(string, 'a', sizeof(string)); + string[kLengths[i]] = '\0'; + + ret = BIO_printf(bio, "test %s", string); + if (ret != 5 + kLengths[i]) { + fprintf(stderr, "BIO_printf failed: %d\n", ret); + return 0; + } + if (!BIO_mem_contents(bio, &contents, &len)) { + fprintf(stderr, "BIO_mem_contents failed\n"); + return 0; + } + if (len != 5 + kLengths[i] || + strncmp((const char *)contents, "test ", 5) != 0 || + strncmp((const char *)contents + 5, string, kLengths[i]) != 0) { + fprintf(stderr, "Contents did not match: %.*s\n", (int)len, contents); + return 0; + } + + if (!BIO_reset(bio)) { + fprintf(stderr, "BIO_reset failed\n"); + return 0; + } + } + + BIO_free(bio); + return 1; +} + +int main(void) { +#if defined(OPENSSL_WINDOWS) + WSADATA wsa_data; + WORD wsa_version; + int wsa_err; +#endif + + CRYPTO_library_init(); + ERR_load_crypto_strings(); + +#if defined(OPENSSL_WINDOWS) + /* Initialize Winsock. */ + wsa_version = MAKEWORD(2, 2); + wsa_err = WSAStartup(wsa_version, &wsa_data); + if (wsa_err != 0) { + fprintf(stderr, "WSAStartup failed: %d\n", wsa_err); + return 1; + } + if (wsa_data.wVersion != wsa_version) { + fprintf(stderr, "Didn't get expected version: %x\n", wsa_data.wVersion); + return 1; + } +#endif + + if (!test_socket_connect()) { + return 1; + } + + if (!test_printf()) { + return 1; + } + + if (!test_zero_copy_bio_pairs()) { + return 1; + } + + printf("PASS\n"); + return 0; +} |