/* * bss_tou.c Based on bss_*.c from OpenSSL Library.... * Therefore - released under their licence. * Copyright 2004-2006 by Robert Fernie. (retroshare@lunamutt.com) */ /* 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.] */ #ifndef OPENSSL_NO_SOCK #include "bio_tou.h" // STUFF defined in the header....... //int BIO_tou_socket_should_retry(int s, int e); //int BIO_tou_socket_non_fatal_error(int error); //#define BIO_TYPE_TOU_SOCKET (30|0x0400|0x0100) /* NEW rmfern type */ //BIO_METHOD *BIO_s_tou_socket(void); #include #include #define USE_SOCKETS //#include "cryptlib.h" #include #include /* for strlen() */ static int tou_socket_write(BIO *h, const char *buf, int num); static int tou_socket_read(BIO *h, char *buf, int size); static int tou_socket_puts(BIO *h, const char *str); static long tou_socket_ctrl(BIO *h, int cmd, long arg1, void *arg2); static int tou_socket_new(BIO *h); static int tou_socket_free(BIO *data); static int get_last_tou_socket_error(int s); static int clear_tou_socket_error(int s); #include "tou.h" static BIO_METHOD methods_tou_sockp= { BIO_TYPE_TOU_SOCKET, "tou_socket", tou_socket_write, tou_socket_read, tou_socket_puts, NULL, /* tou_gets, */ tou_socket_ctrl, tou_socket_new, tou_socket_free, NULL, }; BIO_METHOD *BIO_s_tou_socket(void) { #ifdef DEBUG_TOU_BIO fprintf(stderr, "BIO_s_tou_socket(void)\n"); #endif return(&methods_tou_sockp); } BIO *BIO_new_tou_socket(int fd, int close_flag) { BIO *ret; #ifdef DEBUG_TOU_BIO fprintf(stderr, "BIO_new_tou_socket(%d)\n", fd); #endif ret=BIO_new(BIO_s_tou_socket()); if (ret == NULL) return(NULL); BIO_set_fd(ret,fd,close_flag); return(ret); } static int tou_socket_new(BIO *bi) { #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_new()\n"); #endif bi->init=0; bi->num=0; bi->ptr=NULL; bi->flags=0; return(1); } static int tou_socket_free(BIO *a) { #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_free()\n"); #endif if (a == NULL) return(0); if (a->shutdown) { if (a->init) { tou_close(a->num); } a->init=0; a->flags=0; } return(1); } static int tou_socket_read(BIO *b, char *out, int outl) { int ret=0; #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_read(%p,%p,%d)\n",b,out,outl); #endif if (out != NULL) { clear_tou_socket_error(b->num); /* call tou library */ ret=tou_read(b->num,out,outl); BIO_clear_retry_flags(b); if (ret <= 0) { if (BIO_tou_socket_should_retry(b->num, ret)) BIO_set_retry_read(b); } } #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_read() = %d\n", ret); #endif return(ret); } static int tou_socket_write(BIO *b, const char *in, int inl) { int ret; #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_write(%p,%p,%d)\n",b,in,inl); #endif clear_tou_socket_error(b->num); /* call tou library */ ret=tou_write(b->num,in,inl); BIO_clear_retry_flags(b); if (ret <= 0) { if (BIO_tou_socket_should_retry(b->num,ret)) { BIO_set_retry_write(b); #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_write() setting retry flag\n"); #endif } } #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_write() = %d\n", ret); #endif return(ret); } static long tou_socket_ctrl(BIO *b, int cmd, long num, void *ptr) { long ret=1; int *ip; #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_ctrl(%p,%d,%ld)\n", b, cmd, num); #endif switch (cmd) { case BIO_CTRL_RESET: num=0; case BIO_C_FILE_SEEK: ret=0; break; case BIO_C_FILE_TELL: case BIO_CTRL_INFO: ret=0; break; case BIO_C_SET_FD: tou_socket_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_PENDING: ret = tou_maxread(b->num); #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_pending = %ld\n", ret); #endif break; case BIO_CTRL_WPENDING: ret = tou_maxwrite(b->num); #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_wpending = %ld\n", ret); #endif break; case BIO_CTRL_DUP: case BIO_CTRL_FLUSH: ret=1; break; default: ret=0; break; } return(ret); } static int tou_socket_puts(BIO *bp, const char *str) { int n,ret; #ifdef DEBUG_TOU_BIO fprintf(stderr, "tou_socket_puts()\n"); #endif n=strlen(str); ret=tou_socket_write(bp,str,n); return(ret); } static int clear_tou_socket_error(int fd) { #ifdef DEBUG_TOU_BIO fprintf(stderr, "clear_tou_socket_error()\n"); #endif return tou_clear_error(fd); } static int get_last_tou_socket_error(int s) { #ifdef DEBUG_TOU_BIO fprintf(stderr, "get_last_tou_socket_error()\n"); #endif return tou_errno(s); } int BIO_tou_socket_should_retry(int s, int i) { int err; #ifdef DEBUG_TOU_BIO fprintf(stderr, "BIO_tou_socket_should_retry()\n"); #endif if ((i == 0) || (i == -1)) { err=get_last_tou_socket_error(s); #if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */ if ((i == -1) && (err == 0)) return(1); #endif return(BIO_tou_socket_non_fatal_error(err)); } return(0); } int BIO_tou_socket_non_fatal_error(int err) { switch (err) { #if defined(OPENSSL_SYS_WINDOWS) # if defined(WSAEWOULDBLOCK) case WSAEWOULDBLOCK: # endif # if 0 /* This appears to always be an error */ # if defined(WSAENOTCONN) case WSAENOTCONN: # endif # endif #endif #ifdef EWOULDBLOCK # ifdef WSAEWOULDBLOCK # if WSAEWOULDBLOCK != EWOULDBLOCK case EWOULDBLOCK: # endif # else case EWOULDBLOCK: # endif #endif #if defined(ENOTCONN) case ENOTCONN: #endif #ifdef EINTR case EINTR: #endif #ifdef EAGAIN #if EWOULDBLOCK != EAGAIN case EAGAIN: # endif #endif #ifdef EPROTO case EPROTO: #endif #ifdef EINPROGRESS case EINPROGRESS: #endif #ifdef EALREADY case EALREADY: #endif #ifdef DEBUG_TOU_BIO fprintf(stderr, "BIO_tou_socket_non_fatal_error(%d) = 1\n", err); #endif return(1); /* break; */ default: break; } #ifdef DEBUG_TOU_BIO fprintf(stderr, "BIO_tou_socket_non_fatal_error(%d) = 0\n", err); #endif return(0); } #endif