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287 lines
7.4 KiB
287 lines
7.4 KiB
/* crypto/bio/bss_sock.c */ |
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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* All rights reserved. |
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* |
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* This package is an SSL implementation written |
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* by Eric Young (eay@cryptsoft.com). |
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* The implementation was written so as to conform with Netscapes SSL. |
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* |
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* This library is free for commercial and non-commercial use as long as |
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* the following conditions are aheared to. The following conditions |
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* apply to all code found in this distribution, be it the RC4, RSA, |
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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* included with this distribution is covered by the same copyright terms |
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* except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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* |
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* Copyright remains Eric Young's, and as such any Copyright notices in |
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* the code are not to be removed. |
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* If this package is used in a product, Eric Young should be given attribution |
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* as the author of the parts of the library used. |
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* This can be in the form of a textual message at program startup or |
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* in documentation (online or textual) provided with the package. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. All advertising materials mentioning features or use of this software |
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* must display the following acknowledgement: |
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* "This product includes cryptographic software written by |
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* Eric Young (eay@cryptsoft.com)" |
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* The word 'cryptographic' can be left out if the rouines from the library |
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* being used are not cryptographic related :-). |
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* 4. If you include any Windows specific code (or a derivative thereof) from |
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* the apps directory (application code) you must include an acknowledgement: |
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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* |
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* The licence and distribution terms for any publically available version or |
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* derivative of this code cannot be changed. i.e. this code cannot simply be |
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* copied and put under another distribution licence |
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* [including the GNU Public Licence.] |
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*/ |
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#include <stdio.h> |
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#include <errno.h> |
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#define USE_SOCKETS |
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#include "cryptlib.h" |
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#ifndef OPENSSL_NO_SOCK |
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# include <openssl/bio.h> |
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# ifdef WATT32 |
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# define sock_write SockWrite /* Watt-32 uses same names */ |
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# define sock_read SockRead |
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# define sock_puts SockPuts |
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# endif |
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static int sock_write(BIO *h, const char *buf, int num); |
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static int sock_read(BIO *h, char *buf, int size); |
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static int sock_puts(BIO *h, const char *str); |
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static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2); |
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static int sock_new(BIO *h); |
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static int sock_free(BIO *data); |
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int BIO_sock_should_retry(int s); |
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static BIO_METHOD methods_sockp = { |
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BIO_TYPE_SOCKET, |
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"socket", |
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sock_write, |
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sock_read, |
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sock_puts, |
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NULL, /* sock_gets, */ |
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sock_ctrl, |
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sock_new, |
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sock_free, |
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NULL, |
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}; |
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BIO_METHOD *BIO_s_socket(void) |
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{ |
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return (&methods_sockp); |
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} |
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BIO *BIO_new_socket(int fd, int close_flag) |
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{ |
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BIO *ret; |
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ret = BIO_new(BIO_s_socket()); |
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if (ret == NULL) |
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return (NULL); |
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BIO_set_fd(ret, fd, close_flag); |
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return (ret); |
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} |
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static int sock_new(BIO *bi) |
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{ |
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bi->init = 0; |
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bi->num = 0; |
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bi->ptr = NULL; |
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bi->flags = 0; |
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return (1); |
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} |
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static int sock_free(BIO *a) |
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{ |
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if (a == NULL) |
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return (0); |
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if (a->shutdown) { |
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if (a->init) { |
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SHUTDOWN2(a->num); |
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} |
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a->init = 0; |
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a->flags = 0; |
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} |
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return (1); |
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} |
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static int sock_read(BIO *b, char *out, int outl) |
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{ |
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int ret = 0; |
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if (out != NULL) { |
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clear_socket_error(); |
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ret = readsocket(b->num, out, outl); |
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BIO_clear_retry_flags(b); |
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if (ret <= 0) { |
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if (BIO_sock_should_retry(ret)) |
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BIO_set_retry_read(b); |
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} |
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} |
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return (ret); |
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} |
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static int sock_write(BIO *b, const char *in, int inl) |
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{ |
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int ret; |
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clear_socket_error(); |
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ret = writesocket(b->num, in, inl); |
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BIO_clear_retry_flags(b); |
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if (ret <= 0) { |
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if (BIO_sock_should_retry(ret)) |
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BIO_set_retry_write(b); |
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} |
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return (ret); |
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} |
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static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) |
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{ |
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long ret = 1; |
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int *ip; |
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switch (cmd) { |
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case BIO_C_SET_FD: |
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sock_free(b); |
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b->num = *((int *)ptr); |
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b->shutdown = (int)num; |
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b->init = 1; |
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break; |
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case BIO_C_GET_FD: |
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if (b->init) { |
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ip = (int *)ptr; |
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if (ip != NULL) |
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*ip = b->num; |
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ret = b->num; |
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} else |
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ret = -1; |
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break; |
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case BIO_CTRL_GET_CLOSE: |
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ret = b->shutdown; |
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break; |
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case BIO_CTRL_SET_CLOSE: |
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b->shutdown = (int)num; |
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break; |
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case BIO_CTRL_DUP: |
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case BIO_CTRL_FLUSH: |
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ret = 1; |
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break; |
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default: |
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ret = 0; |
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break; |
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} |
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return (ret); |
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} |
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static int sock_puts(BIO *bp, const char *str) |
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{ |
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int n, ret; |
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n = strlen(str); |
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ret = sock_write(bp, str, n); |
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return (ret); |
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} |
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int BIO_sock_should_retry(int i) |
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{ |
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int err; |
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if ((i == 0) || (i == -1)) { |
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err = get_last_socket_error(); |
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# if defined(OPENSSL_SYS_WINDOWS) && 0/* more microsoft stupidity? perhaps |
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* not? Ben 4/1/99 */ |
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if ((i == -1) && (err == 0)) |
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return (1); |
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# endif |
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return (BIO_sock_non_fatal_error(err)); |
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} |
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return (0); |
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} |
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int BIO_sock_non_fatal_error(int err) |
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{ |
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switch (err) { |
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# if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_NETWARE) |
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# if defined(WSAEWOULDBLOCK) |
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case WSAEWOULDBLOCK: |
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# endif |
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# if 0 /* This appears to always be an error */ |
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# if defined(WSAENOTCONN) |
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case WSAENOTCONN: |
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# endif |
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# endif |
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# endif |
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# ifdef EWOULDBLOCK |
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# ifdef WSAEWOULDBLOCK |
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# if WSAEWOULDBLOCK != EWOULDBLOCK |
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case EWOULDBLOCK: |
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# endif |
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# else |
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case EWOULDBLOCK: |
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# endif |
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# endif |
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# if defined(ENOTCONN) |
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case ENOTCONN: |
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# endif |
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# ifdef EINTR |
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case EINTR: |
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# endif |
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# ifdef EAGAIN |
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# if EWOULDBLOCK != EAGAIN |
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case EAGAIN: |
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# endif |
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# endif |
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# ifdef EPROTO |
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case EPROTO: |
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# endif |
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# ifdef EINPROGRESS |
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case EINPROGRESS: |
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# endif |
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# ifdef EALREADY |
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case EALREADY: |
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# endif |
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return (1); |
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/* break; */ |
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default: |
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break; |
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} |
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return (0); |
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} |
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#endif /* #ifndef OPENSSL_NO_SOCK */
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