155714Skris/* crypto/bio/b_sock.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 855714Skris * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1555714Skris * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 2255714Skris * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 3755714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4055714Skris * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 5255714Skris * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#include <stdio.h> 6055714Skris#include <stdlib.h> 6155714Skris#include <errno.h> 6255714Skris#define USE_SOCKETS 6355714Skris#include "cryptlib.h" 6455714Skris#include <openssl/bio.h> 65160814Ssimon#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK) 66194206Ssimon#include <netdb.h> 67194206Ssimon#if defined(NETWARE_CLIB) 68194206Ssimon#include <sys/ioctl.h> 69194206SsimonNETDB_DEFINE_CONTEXT 70160814Ssimon#endif 71194206Ssimon#endif 7255714Skris 73160814Ssimon#ifndef OPENSSL_NO_SOCK 74160814Ssimon 75238405Sjkim#include <openssl/dso.h> 76238405Sjkim 7755714Skris#define SOCKET_PROTOCOL IPPROTO_TCP 7855714Skris 7955714Skris#ifdef SO_MAXCONN 80100928Snectar#define MAX_LISTEN SO_MAXCONN 81100928Snectar#elif defined(SOMAXCONN) 8255714Skris#define MAX_LISTEN SOMAXCONN 8355714Skris#else 8455714Skris#define MAX_LISTEN 32 8555714Skris#endif 8655714Skris 87160814Ssimon#if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) 8855714Skrisstatic int wsa_init_done=0; 8955714Skris#endif 9055714Skris 91238405Sjkim/* 92238405Sjkim * WSAAPI specifier is required to make indirect calls to run-time 93238405Sjkim * linked WinSock 2 functions used in this module, to be specific 94238405Sjkim * [get|free]addrinfo and getnameinfo. This is because WinSock uses 95238405Sjkim * uses non-C calling convention, __stdcall vs. __cdecl, on x86 96238405Sjkim * Windows. On non-WinSock platforms WSAAPI needs to be void. 97238405Sjkim */ 98238405Sjkim#ifndef WSAAPI 99238405Sjkim#define WSAAPI 100238405Sjkim#endif 101238405Sjkim 102109998Smarkm#if 0 10355714Skrisstatic unsigned long BIO_ghbn_hits=0L; 10455714Skrisstatic unsigned long BIO_ghbn_miss=0L; 10555714Skris 10655714Skris#define GHBN_NUM 4 10755714Skrisstatic struct ghbn_cache_st 10855714Skris { 10955714Skris char name[129]; 11055714Skris struct hostent *ent; 11155714Skris unsigned long order; 11255714Skris } ghbn_cache[GHBN_NUM]; 113109998Smarkm#endif 11455714Skris 11555714Skrisstatic int get_ip(const char *str,unsigned char *ip); 11689837Skris#if 0 11755714Skrisstatic void ghbn_free(struct hostent *a); 11855714Skrisstatic struct hostent *ghbn_dup(struct hostent *a); 11989837Skris#endif 12055714Skrisint BIO_get_host_ip(const char *str, unsigned char *ip) 12155714Skris { 12255714Skris int i; 12355714Skris int err = 1; 12455714Skris int locked = 0; 12555714Skris struct hostent *he; 12655714Skris 12755714Skris i=get_ip(str,ip); 12855714Skris if (i < 0) 12955714Skris { 13055714Skris BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS); 13155714Skris goto err; 13255714Skris } 13355714Skris 13468651Skris /* At this point, we have something that is most probably correct 13568651Skris in some way, so let's init the socket. */ 13672613Skris if (BIO_sock_init() != 1) 13772613Skris return 0; /* don't generate another error code here */ 13855714Skris 13968651Skris /* If the string actually contained an IP address, we need not do 14068651Skris anything more */ 14168651Skris if (i > 0) return(1); 14268651Skris 14368651Skris /* do a gethostbyname */ 14455714Skris CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); 14555714Skris locked = 1; 14655714Skris he=BIO_gethostbyname(str); 14755714Skris if (he == NULL) 14855714Skris { 14955714Skris BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP); 15055714Skris goto err; 15155714Skris } 15255714Skris 15355714Skris /* cast to short because of win16 winsock definition */ 15455714Skris if ((short)he->h_addrtype != AF_INET) 15555714Skris { 15655714Skris BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET); 15755714Skris goto err; 15855714Skris } 15955714Skris for (i=0; i<4; i++) 16055714Skris ip[i]=he->h_addr_list[0][i]; 16155714Skris err = 0; 16255714Skris 16355714Skris err: 16455714Skris if (locked) 16555714Skris CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); 16655714Skris if (err) 16755714Skris { 16855714Skris ERR_add_error_data(2,"host=",str); 16955714Skris return 0; 17055714Skris } 17155714Skris else 17255714Skris return 1; 17355714Skris } 17455714Skris 17555714Skrisint BIO_get_port(const char *str, unsigned short *port_ptr) 17655714Skris { 17755714Skris int i; 17855714Skris struct servent *s; 17955714Skris 18055714Skris if (str == NULL) 18155714Skris { 18255714Skris BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED); 18355714Skris return(0); 18455714Skris } 18555714Skris i=atoi(str); 18655714Skris if (i != 0) 18755714Skris *port_ptr=(unsigned short)i; 18855714Skris else 18955714Skris { 19055714Skris CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME); 19159191Skris /* Note: under VMS with SOCKETSHR, it seems like the first 19259191Skris * parameter is 'char *', instead of 'const char *' 19359191Skris */ 19459191Skris#ifndef CONST_STRICT 195194206Ssimon s=getservbyname((char *)str,"tcp"); 196194206Ssimon#else 197194206Ssimon s=getservbyname(str,"tcp"); 19859191Skris#endif 19955714Skris if(s != NULL) 20055714Skris *port_ptr=ntohs((unsigned short)s->s_port); 20155714Skris CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME); 20255714Skris if(s == NULL) 20355714Skris { 20455714Skris if (strcmp(str,"http") == 0) 20555714Skris *port_ptr=80; 20655714Skris else if (strcmp(str,"telnet") == 0) 20755714Skris *port_ptr=23; 20855714Skris else if (strcmp(str,"socks") == 0) 20955714Skris *port_ptr=1080; 21055714Skris else if (strcmp(str,"https") == 0) 21155714Skris *port_ptr=443; 21255714Skris else if (strcmp(str,"ssl") == 0) 21355714Skris *port_ptr=443; 21455714Skris else if (strcmp(str,"ftp") == 0) 21555714Skris *port_ptr=21; 21655714Skris else if (strcmp(str,"gopher") == 0) 21755714Skris *port_ptr=70; 21855714Skris#if 0 21955714Skris else if (strcmp(str,"wais") == 0) 22055714Skris *port_ptr=21; 22155714Skris#endif 22255714Skris else 22355714Skris { 22455714Skris SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error()); 22555714Skris ERR_add_error_data(3,"service='",str,"'"); 22655714Skris return(0); 22755714Skris } 22855714Skris } 22955714Skris } 23055714Skris return(1); 23155714Skris } 23255714Skris 23355714Skrisint BIO_sock_error(int sock) 23455714Skris { 23555714Skris int j,i; 23655714Skris int size; 23755714Skris 238238405Sjkim#if defined(OPENSSL_SYS_BEOS_R5) 239238405Sjkim return 0; 240238405Sjkim#endif 241238405Sjkim 24255714Skris size=sizeof(int); 24355714Skris /* Note: under Windows the third parameter is of type (char *) 24455714Skris * whereas under other systems it is (void *) if you don't have 24555714Skris * a cast it will choke the compiler: if you do have a cast then 24655714Skris * you can either go for (char *) or (void *). 24755714Skris */ 24855714Skris i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,(void *)&size); 24955714Skris if (i < 0) 25055714Skris return(1); 25155714Skris else 25255714Skris return(j); 25355714Skris } 25455714Skris 255109998Smarkm#if 0 25655714Skrislong BIO_ghbn_ctrl(int cmd, int iarg, char *parg) 25755714Skris { 25855714Skris int i; 25955714Skris char **p; 26055714Skris 26155714Skris switch (cmd) 26255714Skris { 26355714Skris case BIO_GHBN_CTRL_HITS: 26455714Skris return(BIO_ghbn_hits); 26555714Skris /* break; */ 26655714Skris case BIO_GHBN_CTRL_MISSES: 26755714Skris return(BIO_ghbn_miss); 26855714Skris /* break; */ 26955714Skris case BIO_GHBN_CTRL_CACHE_SIZE: 27055714Skris return(GHBN_NUM); 27155714Skris /* break; */ 27255714Skris case BIO_GHBN_CTRL_GET_ENTRY: 27355714Skris if ((iarg >= 0) && (iarg <GHBN_NUM) && 27455714Skris (ghbn_cache[iarg].order > 0)) 27555714Skris { 27655714Skris p=(char **)parg; 27755714Skris if (p == NULL) return(0); 27855714Skris *p=ghbn_cache[iarg].name; 27955714Skris ghbn_cache[iarg].name[128]='\0'; 28055714Skris return(1); 28155714Skris } 28255714Skris return(0); 28355714Skris /* break; */ 28455714Skris case BIO_GHBN_CTRL_FLUSH: 28555714Skris for (i=0; i<GHBN_NUM; i++) 28655714Skris ghbn_cache[i].order=0; 28755714Skris break; 28855714Skris default: 28955714Skris return(0); 29055714Skris } 29155714Skris return(1); 29255714Skris } 293109998Smarkm#endif 29455714Skris 29589837Skris#if 0 29655714Skrisstatic struct hostent *ghbn_dup(struct hostent *a) 29755714Skris { 29855714Skris struct hostent *ret; 29955714Skris int i,j; 30055714Skris 30155714Skris MemCheck_off(); 30268651Skris ret=(struct hostent *)OPENSSL_malloc(sizeof(struct hostent)); 30355714Skris if (ret == NULL) return(NULL); 30455714Skris memset(ret,0,sizeof(struct hostent)); 30555714Skris 30655714Skris for (i=0; a->h_aliases[i] != NULL; i++) 30755714Skris ; 30855714Skris i++; 30968651Skris ret->h_aliases = (char **)OPENSSL_malloc(i*sizeof(char *)); 31055714Skris if (ret->h_aliases == NULL) 31155714Skris goto err; 31255714Skris memset(ret->h_aliases, 0, i*sizeof(char *)); 31355714Skris 31455714Skris for (i=0; a->h_addr_list[i] != NULL; i++) 31555714Skris ; 31655714Skris i++; 31768651Skris ret->h_addr_list=(char **)OPENSSL_malloc(i*sizeof(char *)); 31855714Skris if (ret->h_addr_list == NULL) 31955714Skris goto err; 32055714Skris memset(ret->h_addr_list, 0, i*sizeof(char *)); 32155714Skris 32255714Skris j=strlen(a->h_name)+1; 32368651Skris if ((ret->h_name=OPENSSL_malloc(j)) == NULL) goto err; 32459191Skris memcpy((char *)ret->h_name,a->h_name,j); 32555714Skris for (i=0; a->h_aliases[i] != NULL; i++) 32655714Skris { 32755714Skris j=strlen(a->h_aliases[i])+1; 32868651Skris if ((ret->h_aliases[i]=OPENSSL_malloc(j)) == NULL) goto err; 32959191Skris memcpy(ret->h_aliases[i],a->h_aliases[i],j); 33055714Skris } 33155714Skris ret->h_length=a->h_length; 33255714Skris ret->h_addrtype=a->h_addrtype; 33355714Skris for (i=0; a->h_addr_list[i] != NULL; i++) 33455714Skris { 33568651Skris if ((ret->h_addr_list[i]=OPENSSL_malloc(a->h_length)) == NULL) 33655714Skris goto err; 33755714Skris memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length); 33855714Skris } 33955714Skris if (0) 34055714Skris { 34155714Skriserr: 34255714Skris if (ret != NULL) 34355714Skris ghbn_free(ret); 34455714Skris ret=NULL; 34555714Skris } 34655714Skris MemCheck_on(); 34755714Skris return(ret); 34855714Skris } 34955714Skris 35055714Skrisstatic void ghbn_free(struct hostent *a) 35155714Skris { 35255714Skris int i; 35355714Skris 35455714Skris if(a == NULL) 35555714Skris return; 35655714Skris 35755714Skris if (a->h_aliases != NULL) 35855714Skris { 35955714Skris for (i=0; a->h_aliases[i] != NULL; i++) 36068651Skris OPENSSL_free(a->h_aliases[i]); 36168651Skris OPENSSL_free(a->h_aliases); 36255714Skris } 36355714Skris if (a->h_addr_list != NULL) 36455714Skris { 36555714Skris for (i=0; a->h_addr_list[i] != NULL; i++) 36668651Skris OPENSSL_free(a->h_addr_list[i]); 36768651Skris OPENSSL_free(a->h_addr_list); 36855714Skris } 36968651Skris if (a->h_name != NULL) OPENSSL_free(a->h_name); 37068651Skris OPENSSL_free(a); 37155714Skris } 372109998Smarkm 37389837Skris#endif 37455714Skris 37555714Skrisstruct hostent *BIO_gethostbyname(const char *name) 37655714Skris { 37789837Skris#if 1 37889837Skris /* Caching gethostbyname() results forever is wrong, 37989837Skris * so we have to let the true gethostbyname() worry about this */ 380194206Ssimon#if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__)) 381194206Ssimon return gethostbyname((char*)name); 382194206Ssimon#else 38389837Skris return gethostbyname(name); 384194206Ssimon#endif 38589837Skris#else 38655714Skris struct hostent *ret; 38755714Skris int i,lowi=0,j; 38855714Skris unsigned long low= (unsigned long)-1; 38955714Skris 39055714Skris 39189837Skris# if 0 39289837Skris /* It doesn't make sense to use locking here: The function interface 39389837Skris * is not thread-safe, because threads can never be sure when 39489837Skris * some other thread destroys the data they were given a pointer to. 39589837Skris */ 39655714Skris CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); 39789837Skris# endif 39855714Skris j=strlen(name); 39955714Skris if (j < 128) 40055714Skris { 40155714Skris for (i=0; i<GHBN_NUM; i++) 40255714Skris { 40355714Skris if (low > ghbn_cache[i].order) 40455714Skris { 40555714Skris low=ghbn_cache[i].order; 40655714Skris lowi=i; 40755714Skris } 40855714Skris if (ghbn_cache[i].order > 0) 40955714Skris { 41055714Skris if (strncmp(name,ghbn_cache[i].name,128) == 0) 41155714Skris break; 41255714Skris } 41355714Skris } 41455714Skris } 41555714Skris else 41655714Skris i=GHBN_NUM; 41755714Skris 41855714Skris if (i == GHBN_NUM) /* no hit*/ 41955714Skris { 42055714Skris BIO_ghbn_miss++; 42159191Skris /* Note: under VMS with SOCKETSHR, it seems like the first 42259191Skris * parameter is 'char *', instead of 'const char *' 42359191Skris */ 42489837Skris# ifndef CONST_STRICT 425194206Ssimon ret=gethostbyname((char *)name); 426194206Ssimon# else 427194206Ssimon ret=gethostbyname(name); 42889837Skris# endif 42955714Skris 43055714Skris if (ret == NULL) 43155714Skris goto end; 43255714Skris if (j > 128) /* too big to cache */ 43355714Skris { 43489837Skris# if 0 43589837Skris /* If we were trying to make this function thread-safe (which 43689837Skris * is bound to fail), we'd have to give up in this case 43789837Skris * (or allocate more memory). */ 43855714Skris ret = NULL; 43989837Skris# endif 44055714Skris goto end; 44155714Skris } 44255714Skris 44355714Skris /* else add to cache */ 44455714Skris if (ghbn_cache[lowi].ent != NULL) 44555714Skris ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */ 44655714Skris ghbn_cache[lowi].name[0] = '\0'; 44755714Skris 44855714Skris if((ret=ghbn_cache[lowi].ent=ghbn_dup(ret)) == NULL) 44955714Skris { 45055714Skris BIOerr(BIO_F_BIO_GETHOSTBYNAME,ERR_R_MALLOC_FAILURE); 45155714Skris goto end; 45255714Skris } 45355714Skris strncpy(ghbn_cache[lowi].name,name,128); 45455714Skris ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits; 45555714Skris } 45655714Skris else 45755714Skris { 45855714Skris BIO_ghbn_hits++; 45955714Skris ret= ghbn_cache[i].ent; 46055714Skris ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits; 46155714Skris } 46255714Skrisend: 46389837Skris# if 0 46455714Skris CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); 46589837Skris# endif 46689837Skris return(ret); 46755714Skris#endif 46855714Skris } 46955714Skris 47089837Skris 47155714Skrisint BIO_sock_init(void) 47255714Skris { 473109998Smarkm#ifdef OPENSSL_SYS_WINDOWS 47455714Skris static struct WSAData wsa_state; 47555714Skris 47655714Skris if (!wsa_init_done) 47755714Skris { 47855714Skris int err; 47955714Skris 48055714Skris wsa_init_done=1; 48155714Skris memset(&wsa_state,0,sizeof(wsa_state)); 482238405Sjkim /* Not making wsa_state available to the rest of the 483238405Sjkim * code is formally wrong. But the structures we use 484238405Sjkim * are [beleived to be] invariable among Winsock DLLs, 485238405Sjkim * while API availability is [expected to be] probed 486238405Sjkim * at run-time with DSO_global_lookup. */ 487238405Sjkim if (WSAStartup(0x0202,&wsa_state)!=0) 48855714Skris { 48955714Skris err=WSAGetLastError(); 49055714Skris SYSerr(SYS_F_WSASTARTUP,err); 49155714Skris BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); 49255714Skris return(-1); 49355714Skris } 49455714Skris } 495109998Smarkm#endif /* OPENSSL_SYS_WINDOWS */ 496109998Smarkm#ifdef WATT32 497109998Smarkm extern int _watt_do_exit; 498109998Smarkm _watt_do_exit = 0; /* don't make sock_init() call exit() */ 499109998Smarkm if (sock_init()) 500109998Smarkm return (-1); 501109998Smarkm#endif 502160814Ssimon 503160814Ssimon#if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) 504160814Ssimon WORD wVerReq; 505160814Ssimon WSADATA wsaData; 506160814Ssimon int err; 507160814Ssimon 508160814Ssimon if (!wsa_init_done) 509160814Ssimon { 510160814Ssimon wsa_init_done=1; 511160814Ssimon wVerReq = MAKEWORD( 2, 0 ); 512160814Ssimon err = WSAStartup(wVerReq,&wsaData); 513160814Ssimon if (err != 0) 514160814Ssimon { 515160814Ssimon SYSerr(SYS_F_WSASTARTUP,err); 516160814Ssimon BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); 517160814Ssimon return(-1); 518160814Ssimon } 519160814Ssimon } 520160814Ssimon#endif 521160814Ssimon 52255714Skris return(1); 52355714Skris } 52455714Skris 52555714Skrisvoid BIO_sock_cleanup(void) 52655714Skris { 527109998Smarkm#ifdef OPENSSL_SYS_WINDOWS 52855714Skris if (wsa_init_done) 52955714Skris { 53055714Skris wsa_init_done=0; 531238405Sjkim#if 0 /* this call is claimed to be non-present in Winsock2 */ 532238405Sjkim WSACancelBlockingCall(); 533109998Smarkm#endif 53455714Skris WSACleanup(); 53555714Skris } 536160814Ssimon#elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) 537160814Ssimon if (wsa_init_done) 538160814Ssimon { 539160814Ssimon wsa_init_done=0; 540160814Ssimon WSACleanup(); 541160814Ssimon } 54255714Skris#endif 54355714Skris } 54455714Skris 545109998Smarkm#if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000 54655714Skris 547111147Snectarint BIO_socket_ioctl(int fd, long type, void *arg) 54855714Skris { 54955714Skris int i; 55055714Skris 551109998Smarkm#ifdef __DJGPP__ 552109998Smarkm i=ioctlsocket(fd,type,(char *)arg); 553109998Smarkm#else 554238405Sjkim# if defined(OPENSSL_SYS_VMS) 555238405Sjkim /* 2011-02-18 SMS. 556238405Sjkim * VMS ioctl() can't tolerate a 64-bit "void *arg", but we 557238405Sjkim * observe that all the consumers pass in an "unsigned long *", 558238405Sjkim * so we arrange a local copy with a short pointer, and use 559238405Sjkim * that, instead. 560238405Sjkim */ 561238405Sjkim# if __INITIAL_POINTER_SIZE == 64 562238405Sjkim# define ARG arg_32p 563238405Sjkim# pragma pointer_size save 564238405Sjkim# pragma pointer_size 32 565238405Sjkim unsigned long arg_32; 566238405Sjkim unsigned long *arg_32p; 567238405Sjkim# pragma pointer_size restore 568238405Sjkim arg_32p = &arg_32; 569238405Sjkim arg_32 = *((unsigned long *) arg); 570238405Sjkim# else /* __INITIAL_POINTER_SIZE == 64 */ 571238405Sjkim# define ARG arg 572238405Sjkim# endif /* __INITIAL_POINTER_SIZE == 64 [else] */ 573238405Sjkim# else /* defined(OPENSSL_SYS_VMS) */ 574238405Sjkim# define ARG arg 575238405Sjkim# endif /* defined(OPENSSL_SYS_VMS) [else] */ 576238405Sjkim 577238405Sjkim i=ioctlsocket(fd,type,ARG); 578109998Smarkm#endif /* __DJGPP__ */ 57955714Skris if (i < 0) 58055714Skris SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error()); 58155714Skris return(i); 58255714Skris } 58355714Skris#endif /* __VMS_VER */ 58455714Skris 58555714Skris/* The reason I have implemented this instead of using sscanf is because 58655714Skris * Visual C 1.52c gives an unresolved external when linking a DLL :-( */ 58755714Skrisstatic int get_ip(const char *str, unsigned char ip[4]) 58855714Skris { 58955714Skris unsigned int tmp[4]; 59055714Skris int num=0,c,ok=0; 59155714Skris 59255714Skris tmp[0]=tmp[1]=tmp[2]=tmp[3]=0; 59355714Skris 59455714Skris for (;;) 59555714Skris { 59655714Skris c= *(str++); 59755714Skris if ((c >= '0') && (c <= '9')) 59855714Skris { 59955714Skris ok=1; 60055714Skris tmp[num]=tmp[num]*10+c-'0'; 601109998Smarkm if (tmp[num] > 255) return(0); 60255714Skris } 60355714Skris else if (c == '.') 60455714Skris { 60555714Skris if (!ok) return(-1); 606109998Smarkm if (num == 3) return(0); 60755714Skris num++; 60855714Skris ok=0; 60955714Skris } 610109998Smarkm else if (c == '\0' && (num == 3) && ok) 61155714Skris break; 61255714Skris else 61355714Skris return(0); 61455714Skris } 61555714Skris ip[0]=tmp[0]; 61655714Skris ip[1]=tmp[1]; 61755714Skris ip[2]=tmp[2]; 61855714Skris ip[3]=tmp[3]; 61955714Skris return(1); 62055714Skris } 62155714Skris 62255714Skrisint BIO_get_accept_socket(char *host, int bind_mode) 62355714Skris { 62455714Skris int ret=0; 625238405Sjkim union { 626238405Sjkim struct sockaddr sa; 627238405Sjkim struct sockaddr_in sa_in; 628238405Sjkim#if OPENSSL_USE_IPV6 629238405Sjkim struct sockaddr_in6 sa_in6; 630238405Sjkim#endif 631238405Sjkim } server,client; 632238405Sjkim int s=INVALID_SOCKET,cs,addrlen; 63355714Skris unsigned char ip[4]; 63455714Skris unsigned short port; 63572613Skris char *str=NULL,*e; 636238405Sjkim char *h,*p; 63755714Skris unsigned long l; 63855714Skris int err_num; 63955714Skris 64072613Skris if (BIO_sock_init() != 1) return(INVALID_SOCKET); 64155714Skris 64255714Skris if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET); 64355714Skris 64455714Skris h=p=NULL; 64555714Skris h=str; 64655714Skris for (e=str; *e; e++) 64755714Skris { 64855714Skris if (*e == ':') 64955714Skris { 650238405Sjkim p=e; 65155714Skris } 65255714Skris else if (*e == '/') 65355714Skris { 65455714Skris *e='\0'; 65555714Skris break; 65655714Skris } 65755714Skris } 658238405Sjkim if (p) *p++='\0'; /* points at last ':', '::port' is special [see below] */ 659238405Sjkim else p=h,h=NULL; 66055714Skris 661238405Sjkim#ifdef EAI_FAMILY 662238405Sjkim do { 663238405Sjkim static union { void *p; 664238405Sjkim int (WSAAPI *f)(const char *,const char *, 665238405Sjkim const struct addrinfo *, 666238405Sjkim struct addrinfo **); 667238405Sjkim } p_getaddrinfo = {NULL}; 668238405Sjkim static union { void *p; 669238405Sjkim void (WSAAPI *f)(struct addrinfo *); 670238405Sjkim } p_freeaddrinfo = {NULL}; 671238405Sjkim struct addrinfo *res,hint; 672238405Sjkim 673238405Sjkim if (p_getaddrinfo.p==NULL) 67455714Skris { 675238405Sjkim if ((p_getaddrinfo.p=DSO_global_lookup("getaddrinfo"))==NULL || 676238405Sjkim (p_freeaddrinfo.p=DSO_global_lookup("freeaddrinfo"))==NULL) 677238405Sjkim p_getaddrinfo.p=(void*)-1; 67855714Skris } 679238405Sjkim if (p_getaddrinfo.p==(void *)-1) break; 68055714Skris 681238405Sjkim /* '::port' enforces IPv6 wildcard listener. Some OSes, 682238405Sjkim * e.g. Solaris, default to IPv6 without any hint. Also 683238405Sjkim * note that commonly IPv6 wildchard socket can service 684238405Sjkim * IPv4 connections just as well... */ 685238405Sjkim memset(&hint,0,sizeof(hint)); 686238405Sjkim hint.ai_flags = AI_PASSIVE; 687238405Sjkim if (h) 688238405Sjkim { 689238405Sjkim if (strchr(h,':')) 690238405Sjkim { 691238405Sjkim if (h[1]=='\0') h=NULL; 692238405Sjkim#if OPENSSL_USE_IPV6 693238405Sjkim hint.ai_family = AF_INET6; 694238405Sjkim#else 695238405Sjkim h=NULL; 696238405Sjkim#endif 697238405Sjkim } 698238405Sjkim else if (h[0]=='*' && h[1]=='\0') 699238405Sjkim { 700238405Sjkim hint.ai_family = AF_INET; 701238405Sjkim h=NULL; 702238405Sjkim } 703238405Sjkim } 704238405Sjkim 705238405Sjkim if ((*p_getaddrinfo.f)(h,p,&hint,&res)) break; 706238405Sjkim 707238405Sjkim addrlen = res->ai_addrlen<=sizeof(server) ? 708238405Sjkim res->ai_addrlen : 709238405Sjkim sizeof(server); 710238405Sjkim memcpy(&server, res->ai_addr, addrlen); 711238405Sjkim 712238405Sjkim (*p_freeaddrinfo.f)(res); 713238405Sjkim goto again; 714238405Sjkim } while (0); 715238405Sjkim#endif 716238405Sjkim 71772613Skris if (!BIO_get_port(p,&port)) goto err; 71855714Skris 71955714Skris memset((char *)&server,0,sizeof(server)); 720238405Sjkim server.sa_in.sin_family=AF_INET; 721238405Sjkim server.sa_in.sin_port=htons(port); 722238405Sjkim addrlen = sizeof(server.sa_in); 72355714Skris 724238405Sjkim if (h == NULL || strcmp(h,"*") == 0) 725238405Sjkim server.sa_in.sin_addr.s_addr=INADDR_ANY; 72655714Skris else 72755714Skris { 72872613Skris if (!BIO_get_host_ip(h,&(ip[0]))) goto err; 72955714Skris l=(unsigned long) 73055714Skris ((unsigned long)ip[0]<<24L)| 73155714Skris ((unsigned long)ip[1]<<16L)| 73255714Skris ((unsigned long)ip[2]<< 8L)| 73355714Skris ((unsigned long)ip[3]); 734238405Sjkim server.sa_in.sin_addr.s_addr=htonl(l); 73555714Skris } 73655714Skris 73755714Skrisagain: 738238405Sjkim s=socket(server.sa.sa_family,SOCK_STREAM,SOCKET_PROTOCOL); 73955714Skris if (s == INVALID_SOCKET) 74055714Skris { 74155714Skris SYSerr(SYS_F_SOCKET,get_last_socket_error()); 74255714Skris ERR_add_error_data(3,"port='",host,"'"); 74355714Skris BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET); 74455714Skris goto err; 74555714Skris } 74655714Skris 74755714Skris#ifdef SO_REUSEADDR 74855714Skris if (bind_mode == BIO_BIND_REUSEADDR) 74955714Skris { 75055714Skris int i=1; 75155714Skris 75255714Skris ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i)); 75355714Skris bind_mode=BIO_BIND_NORMAL; 75455714Skris } 75555714Skris#endif 756238405Sjkim if (bind(s,&server.sa,addrlen) == -1) 75755714Skris { 75855714Skris#ifdef SO_REUSEADDR 75955714Skris err_num=get_last_socket_error(); 76055714Skris if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) && 761215697Ssimon#ifdef OPENSSL_SYS_WINDOWS 762215697Ssimon /* Some versions of Windows define EADDRINUSE to 763215697Ssimon * a dummy value. 764215697Ssimon */ 765215697Ssimon (err_num == WSAEADDRINUSE)) 766215697Ssimon#else 76755714Skris (err_num == EADDRINUSE)) 768215697Ssimon#endif 76955714Skris { 770238405Sjkim client = server; 771238405Sjkim if (h == NULL || strcmp(h,"*") == 0) 772238405Sjkim { 773238405Sjkim#if OPENSSL_USE_IPV6 774238405Sjkim if (client.sa.sa_family == AF_INET6) 775238405Sjkim { 776238405Sjkim memset(&client.sa_in6.sin6_addr,0,sizeof(client.sa_in6.sin6_addr)); 777238405Sjkim client.sa_in6.sin6_addr.s6_addr[15]=1; 778238405Sjkim } 779238405Sjkim else 780238405Sjkim#endif 781238405Sjkim if (client.sa.sa_family == AF_INET) 782238405Sjkim { 783238405Sjkim client.sa_in.sin_addr.s_addr=htonl(0x7F000001); 784238405Sjkim } 785238405Sjkim else goto err; 786238405Sjkim } 787238405Sjkim cs=socket(client.sa.sa_family,SOCK_STREAM,SOCKET_PROTOCOL); 78855714Skris if (cs != INVALID_SOCKET) 78955714Skris { 79055714Skris int ii; 791238405Sjkim ii=connect(cs,&client.sa,addrlen); 79255714Skris closesocket(cs); 79355714Skris if (ii == INVALID_SOCKET) 79455714Skris { 79555714Skris bind_mode=BIO_BIND_REUSEADDR; 79655714Skris closesocket(s); 79755714Skris goto again; 79855714Skris } 79955714Skris /* else error */ 80055714Skris } 80155714Skris /* else error */ 80255714Skris } 80355714Skris#endif 80455714Skris SYSerr(SYS_F_BIND,err_num); 80555714Skris ERR_add_error_data(3,"port='",host,"'"); 80655714Skris BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET); 80755714Skris goto err; 80855714Skris } 80955714Skris if (listen(s,MAX_LISTEN) == -1) 81055714Skris { 81155714Skris SYSerr(SYS_F_BIND,get_last_socket_error()); 81255714Skris ERR_add_error_data(3,"port='",host,"'"); 81355714Skris BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET); 81455714Skris goto err; 81555714Skris } 81655714Skris ret=1; 81755714Skriserr: 81868651Skris if (str != NULL) OPENSSL_free(str); 81955714Skris if ((ret == 0) && (s != INVALID_SOCKET)) 82055714Skris { 82155714Skris closesocket(s); 82255714Skris s= INVALID_SOCKET; 82355714Skris } 82455714Skris return(s); 82555714Skris } 82655714Skris 82755714Skrisint BIO_accept(int sock, char **addr) 82855714Skris { 82955714Skris int ret=INVALID_SOCKET; 83055714Skris unsigned long l; 83155714Skris unsigned short port; 83255714Skris char *p; 83355714Skris 834238405Sjkim struct { 835238405Sjkim /* 836238405Sjkim * As for following union. Trouble is that there are platforms 837238405Sjkim * that have socklen_t and there are platforms that don't, on 838238405Sjkim * some platforms socklen_t is int and on some size_t. So what 839238405Sjkim * one can do? One can cook #ifdef spaghetti, which is nothing 840238405Sjkim * but masochistic. Or one can do union between int and size_t. 841238405Sjkim * One naturally does it primarily for 64-bit platforms where 842238405Sjkim * sizeof(int) != sizeof(size_t). But would it work? Note that 843238405Sjkim * if size_t member is initialized to 0, then later int member 844238405Sjkim * assignment naturally does the job on little-endian platforms 845238405Sjkim * regardless accept's expectations! What about big-endians? 846238405Sjkim * If accept expects int*, then it works, and if size_t*, then 847238405Sjkim * length value would appear as unreasonably large. But this 848238405Sjkim * won't prevent it from filling in the address structure. The 849238405Sjkim * trouble of course would be if accept returns more data than 850238405Sjkim * actual buffer can accomodate and overwrite stack... That's 851238405Sjkim * where early OPENSSL_assert comes into picture. Besides, the 852238405Sjkim * only 64-bit big-endian platform found so far that expects 853238405Sjkim * size_t* is HP-UX, where stack grows towards higher address. 854238405Sjkim * <appro> 85555714Skris */ 856238405Sjkim union { size_t s; int i; } len; 857238405Sjkim union { 858238405Sjkim struct sockaddr sa; 859238405Sjkim struct sockaddr_in sa_in; 860238405Sjkim#if OPENSSL_USE_IPV6 861238405Sjkim struct sockaddr_in6 sa_in6; 862238405Sjkim#endif 863238405Sjkim } from; 864238405Sjkim } sa; 865238405Sjkim 866238405Sjkim sa.len.s=0; 867238405Sjkim sa.len.i=sizeof(sa.from); 868238405Sjkim memset(&sa.from,0,sizeof(sa.from)); 869238405Sjkim ret=accept(sock,&sa.from.sa,(void *)&sa.len); 870238405Sjkim if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0) 871238405Sjkim { 872238405Sjkim OPENSSL_assert(sa.len.s<=sizeof(sa.from)); 873238405Sjkim sa.len.i = (int)sa.len.s; 874238405Sjkim /* use sa.len.i from this point */ 875238405Sjkim } 87655714Skris if (ret == INVALID_SOCKET) 87755714Skris { 878109998Smarkm if(BIO_sock_should_retry(ret)) return -2; 87955714Skris SYSerr(SYS_F_ACCEPT,get_last_socket_error()); 88055714Skris BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR); 88155714Skris goto end; 88255714Skris } 88355714Skris 88455714Skris if (addr == NULL) goto end; 88555714Skris 886238405Sjkim#ifdef EAI_FAMILY 887238405Sjkim do { 888238405Sjkim char h[NI_MAXHOST],s[NI_MAXSERV]; 889238405Sjkim size_t nl; 890238405Sjkim static union { void *p; 891238405Sjkim int (WSAAPI *f)(const struct sockaddr *,size_t/*socklen_t*/, 892238405Sjkim char *,size_t,char *,size_t,int); 893238405Sjkim } p_getnameinfo = {NULL}; 894238405Sjkim /* 2nd argument to getnameinfo is specified to 895238405Sjkim * be socklen_t. Unfortunately there is a number 896238405Sjkim * of environments where socklen_t is not defined. 897238405Sjkim * As it's passed by value, it's safe to pass it 898238405Sjkim * as size_t... <appro> */ 899238405Sjkim 900238405Sjkim if (p_getnameinfo.p==NULL) 901238405Sjkim { 902238405Sjkim if ((p_getnameinfo.p=DSO_global_lookup("getnameinfo"))==NULL) 903238405Sjkim p_getnameinfo.p=(void*)-1; 904238405Sjkim } 905238405Sjkim if (p_getnameinfo.p==(void *)-1) break; 906238405Sjkim 907238405Sjkim if ((*p_getnameinfo.f)(&sa.from.sa,sa.len.i,h,sizeof(h),s,sizeof(s), 908238405Sjkim NI_NUMERICHOST|NI_NUMERICSERV)) break; 909238405Sjkim nl = strlen(h)+strlen(s)+2; 910238405Sjkim p = *addr; 911238405Sjkim if (p) { *p = '\0'; p = OPENSSL_realloc(p,nl); } 912238405Sjkim else { p = OPENSSL_malloc(nl); } 913238405Sjkim if (p==NULL) 914238405Sjkim { 915238405Sjkim BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE); 916238405Sjkim goto end; 917238405Sjkim } 918238405Sjkim *addr = p; 919238405Sjkim BIO_snprintf(*addr,nl,"%s:%s",h,s); 920238405Sjkim goto end; 921238405Sjkim } while(0); 922238405Sjkim#endif 923238405Sjkim if (sa.from.sa.sa_family != AF_INET) goto end; 924238405Sjkim l=ntohl(sa.from.sa_in.sin_addr.s_addr); 925238405Sjkim port=ntohs(sa.from.sa_in.sin_port); 92655714Skris if (*addr == NULL) 92755714Skris { 92868651Skris if ((p=OPENSSL_malloc(24)) == NULL) 92955714Skris { 93055714Skris BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE); 93155714Skris goto end; 93255714Skris } 93355714Skris *addr=p; 93455714Skris } 935127128Snectar BIO_snprintf(*addr,24,"%d.%d.%d.%d:%d", 936127128Snectar (unsigned char)(l>>24L)&0xff, 937127128Snectar (unsigned char)(l>>16L)&0xff, 938127128Snectar (unsigned char)(l>> 8L)&0xff, 939127128Snectar (unsigned char)(l )&0xff, 940127128Snectar port); 94155714Skrisend: 94255714Skris return(ret); 94355714Skris } 94455714Skris 94555714Skrisint BIO_set_tcp_ndelay(int s, int on) 94655714Skris { 94755714Skris int ret=0; 94855714Skris#if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP)) 94955714Skris int opt; 95055714Skris 95155714Skris#ifdef SOL_TCP 95255714Skris opt=SOL_TCP; 95355714Skris#else 95455714Skris#ifdef IPPROTO_TCP 95555714Skris opt=IPPROTO_TCP; 95655714Skris#endif 95755714Skris#endif 95855714Skris 95955714Skris ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on)); 96055714Skris#endif 96155714Skris return(ret == 0); 96255714Skris } 96355714Skris 96455714Skrisint BIO_socket_nbio(int s, int mode) 96555714Skris { 96655714Skris int ret= -1; 967111147Snectar int l; 96855714Skris 96955714Skris l=mode; 97055714Skris#ifdef FIONBIO 97155714Skris ret=BIO_socket_ioctl(s,FIONBIO,&l); 97255714Skris#endif 97355714Skris return(ret == 0); 97455714Skris } 975238405Sjkim#endif 976