195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley/* crypto/bio/bss_sock.c */ 295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * All rights reserved. 495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * This package is an SSL implementation written 695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * by Eric Young (eay@cryptsoft.com). 795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * The implementation was written so as to conform with Netscapes SSL. 895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * This library is free for commercial and non-commercial use as long as 1095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * the following conditions are aheared to. The following conditions 1195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * apply to all code found in this distribution, be it the RC4, RSA, 1295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * included with this distribution is covered by the same copyright terms 1495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 1695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Copyright remains Eric Young's, and as such any Copyright notices in 1795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * the code are not to be removed. 1895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * If this package is used in a product, Eric Young should be given attribution 1995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * as the author of the parts of the library used. 2095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * This can be in the form of a textual message at program startup or 2195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * in documentation (online or textual) provided with the package. 2295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 2395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Redistribution and use in source and binary forms, with or without 2495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * modification, are permitted provided that the following conditions 2595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * are met: 2695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 1. Redistributions of source code must retain the copyright 2795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * notice, this list of conditions and the following disclaimer. 2895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 2. Redistributions in binary form must reproduce the above copyright 2995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * notice, this list of conditions and the following disclaimer in the 3095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * documentation and/or other materials provided with the distribution. 3195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 3. All advertising materials mentioning features or use of this software 3295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * must display the following acknowledgement: 3395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * "This product includes cryptographic software written by 3495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Eric Young (eay@cryptsoft.com)" 3595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * The word 'cryptographic' can be left out if the rouines from the library 3695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * being used are not cryptographic related :-). 3795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 4. If you include any Windows specific code (or a derivative thereof) from 3895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * the apps directory (application code) you must include an acknowledgement: 3995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 4195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * SUCH DAMAGE. 5295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 5395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * The licence and distribution terms for any publically available version or 5495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * derivative of this code cannot be changed. i.e. this code cannot simply be 5595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * copied and put under another distribution licence 5695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * [including the GNU Public Licence.] */ 5795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 5895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include <openssl/bio.h> 5995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 6095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include <fcntl.h> 6195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 6295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#if !defined(OPENSSL_WINDOWS) 6395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include <unistd.h> 6495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#endif 6595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 6695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include "internal.h" 6795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 6895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 6995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleystatic int sock_new(BIO *bio) { 7095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio->init = 0; 7195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio->num = 0; 7295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio->ptr = NULL; 7395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio->flags = 0; 7495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return 1; 7595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 7695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 7795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleystatic int sock_free(BIO *bio) { 7895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (bio == NULL) { 7995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return 0; 8095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 8195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 8295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (bio->shutdown) { 8395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (bio->init) { 8495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley close(bio->num); 8595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 8695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio->init = 0; 8795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio->flags = 0; 8895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 8995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return 1; 9095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 9195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 9295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleystatic int sock_read(BIO *b, char *out, int outl) { 9395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley int ret = 0; 9495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 9595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (out == NULL) { 9695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return 0; 9795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 9895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 9995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio_clear_socket_error(); 10095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = recv(b->num, out, outl, 0); 10195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIO_clear_retry_flags(b); 10295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (ret <= 0) { 10395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (bio_fd_should_retry(ret)) { 10495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIO_set_retry_read(b); 10595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 10695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 10795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return ret; 10895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 10995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 11095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleystatic int sock_write(BIO *b, const char *in, int inl) { 11195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley int ret; 11295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 11395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley bio_clear_socket_error(); 11495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = send(b->num, in, inl, 0); 11595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIO_clear_retry_flags(b); 11695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (ret <= 0) { 11795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (bio_fd_should_retry(ret)) { 11895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIO_set_retry_write(b); 11995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 12095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 12195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return ret; 12295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 12395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 12495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleystatic int sock_puts(BIO *bp, const char *str) { 12595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return sock_write(bp, str, strlen(str)); 12695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 12795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 12895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleystatic long sock_ctrl(BIO *b, int cmd, long num, void *ptr) { 12995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley long ret = 1; 13095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley int *ip; 13195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 13295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley switch (cmd) { 13395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley case BIO_C_SET_FD: 13495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley sock_free(b); 13595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley b->num = *((int *)ptr); 13695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley b->shutdown = (int)num; 13795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley b->init = 1; 13895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley break; 13995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley case BIO_C_GET_FD: 14095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (b->init) { 14195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ip = (int *)ptr; 14295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (ip != NULL) 14395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley *ip = b->num; 14495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = b->num; 14595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } else 14695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = -1; 14795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley break; 14895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley case BIO_CTRL_GET_CLOSE: 14995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = b->shutdown; 15095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley break; 15195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley case BIO_CTRL_SET_CLOSE: 15295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley b->shutdown = (int)num; 15395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley break; 15495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley case BIO_CTRL_FLUSH: 15595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = 1; 15695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley break; 15795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley default: 15895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = 0; 15995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley break; 16095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 16195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return ret; 16295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 16395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 16495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleystatic const BIO_METHOD methods_sockp = { 16595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIO_TYPE_SOCKET, "socket", sock_write, sock_read, sock_puts, 16695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley NULL /* gets, */, sock_ctrl, sock_new, sock_free, NULL, 16795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley}; 16895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 16995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleyconst BIO_METHOD *BIO_s_socket(void) { return &methods_sockp; } 17095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 17195c29f3cd1f6c08c6c0927868683392eea727ccAdam LangleyBIO *BIO_new_socket(int fd, int close_flag) { 17295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIO *ret; 17395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 17495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = BIO_new(BIO_s_socket()); 17595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (ret == NULL) { 17695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return NULL; 17795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 17895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIO_set_fd(ret, fd, close_flag); 17995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return ret; 18095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 181