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Diffstat (limited to 'src/crypto/bio/socket.c')
-rw-r--r-- | src/crypto/bio/socket.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/crypto/bio/socket.c b/src/crypto/bio/socket.c new file mode 100644 index 0000000..590447f --- /dev/null +++ b/src/crypto/bio/socket.c @@ -0,0 +1,191 @@ +/* crypto/bio/bss_sock.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] */ + +#include <openssl/bio.h> + +#include <fcntl.h> +#include <string.h> + +#if !defined(OPENSSL_WINDOWS) +#include <unistd.h> +#else +#pragma warning(push, 3) +#include <WinSock2.h> +#pragma warning(pop) +#endif + +#include "internal.h" + + +#if !defined(OPENSSL_WINDOWS) +static int closesocket(int sock) { + return close(sock); +} +#endif + +static int sock_new(BIO *bio) { + bio->init = 0; + bio->num = 0; + bio->ptr = NULL; + bio->flags = 0; + return 1; +} + +static int sock_free(BIO *bio) { + if (bio == NULL) { + return 0; + } + + if (bio->shutdown) { + if (bio->init) { + closesocket(bio->num); + } + bio->init = 0; + bio->flags = 0; + } + return 1; +} + +static int sock_read(BIO *b, char *out, int outl) { + int ret = 0; + + if (out == NULL) { + return 0; + } + + bio_clear_socket_error(); + ret = recv(b->num, out, outl, 0); + BIO_clear_retry_flags(b); + if (ret <= 0) { + if (bio_fd_should_retry(ret)) { + BIO_set_retry_read(b); + } + } + return ret; +} + +static int sock_write(BIO *b, const char *in, int inl) { + int ret; + + bio_clear_socket_error(); + ret = send(b->num, in, inl, 0); + BIO_clear_retry_flags(b); + if (ret <= 0) { + if (bio_fd_should_retry(ret)) { + BIO_set_retry_write(b); + } + } + return ret; +} + +static int sock_puts(BIO *bp, const char *str) { + return sock_write(bp, str, strlen(str)); +} + +static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) { + long ret = 1; + int *ip; + + switch (cmd) { + case BIO_C_SET_FD: + sock_free(b); + b->num = *((int *)ptr); + b->shutdown = (int)num; + b->init = 1; + break; + case BIO_C_GET_FD: + if (b->init) { + ip = (int *)ptr; + if (ip != NULL) + *ip = b->num; + ret = b->num; + } else + ret = -1; + break; + case BIO_CTRL_GET_CLOSE: + ret = b->shutdown; + break; + case BIO_CTRL_SET_CLOSE: + b->shutdown = (int)num; + break; + case BIO_CTRL_FLUSH: + ret = 1; + break; + default: + ret = 0; + break; + } + return ret; +} + +static const BIO_METHOD methods_sockp = { + BIO_TYPE_SOCKET, "socket", sock_write, sock_read, sock_puts, + NULL /* gets, */, sock_ctrl, sock_new, sock_free, NULL, +}; + +const BIO_METHOD *BIO_s_socket(void) { return &methods_sockp; } + +BIO *BIO_new_socket(int fd, int close_flag) { + BIO *ret; + + ret = BIO_new(BIO_s_socket()); + if (ret == NULL) { + return NULL; + } + BIO_set_fd(ret, fd, close_flag); + return ret; +} |