| /* crypto/bio/b_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 <stdio.h> |
| #include <stdlib.h> |
| #include <errno.h> |
| #define USE_SOCKETS |
| #include "cryptlib.h" |
| #include <openssl/bio.h> |
| #if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK) |
| #include <netdb.h> |
| #if defined(NETWARE_CLIB) |
| #include <sys/ioctl.h> |
| NETDB_DEFINE_CONTEXT |
| #endif |
| #endif |
| |
| #ifndef OPENSSL_NO_SOCK |
| |
| #include <openssl/dso.h> |
| |
| #define SOCKET_PROTOCOL IPPROTO_TCP |
| |
| #ifdef SO_MAXCONN |
| #define MAX_LISTEN SO_MAXCONN |
| #elif defined(SOMAXCONN) |
| #define MAX_LISTEN SOMAXCONN |
| #else |
| #define MAX_LISTEN 32 |
| #endif |
| |
| #if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) |
| static int wsa_init_done=0; |
| #endif |
| |
| /* |
| * WSAAPI specifier is required to make indirect calls to run-time |
| * linked WinSock 2 functions used in this module, to be specific |
| * [get|free]addrinfo and getnameinfo. This is because WinSock uses |
| * uses non-C calling convention, __stdcall vs. __cdecl, on x86 |
| * Windows. On non-WinSock platforms WSAAPI needs to be void. |
| */ |
| #ifndef WSAAPI |
| #define WSAAPI |
| #endif |
| |
| #if 0 |
| static unsigned long BIO_ghbn_hits=0L; |
| static unsigned long BIO_ghbn_miss=0L; |
| |
| #define GHBN_NUM 4 |
| static struct ghbn_cache_st |
| { |
| char name[129]; |
| struct hostent *ent; |
| unsigned long order; |
| } ghbn_cache[GHBN_NUM]; |
| #endif |
| |
| static int get_ip(const char *str,unsigned char *ip); |
| #if 0 |
| static void ghbn_free(struct hostent *a); |
| static struct hostent *ghbn_dup(struct hostent *a); |
| #endif |
| int BIO_get_host_ip(const char *str, unsigned char *ip) |
| { |
| int i; |
| int err = 1; |
| int locked = 0; |
| struct hostent *he; |
| |
| i=get_ip(str,ip); |
| if (i < 0) |
| { |
| BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS); |
| goto err; |
| } |
| |
| /* At this point, we have something that is most probably correct |
| in some way, so let's init the socket. */ |
| if (BIO_sock_init() != 1) |
| return 0; /* don't generate another error code here */ |
| |
| /* If the string actually contained an IP address, we need not do |
| anything more */ |
| if (i > 0) return(1); |
| |
| /* do a gethostbyname */ |
| CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); |
| locked = 1; |
| he=BIO_gethostbyname(str); |
| if (he == NULL) |
| { |
| BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP); |
| goto err; |
| } |
| |
| /* cast to short because of win16 winsock definition */ |
| if ((short)he->h_addrtype != AF_INET) |
| { |
| BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET); |
| goto err; |
| } |
| for (i=0; i<4; i++) |
| ip[i]=he->h_addr_list[0][i]; |
| err = 0; |
| |
| err: |
| if (locked) |
| CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); |
| if (err) |
| { |
| ERR_add_error_data(2,"host=",str); |
| return 0; |
| } |
| else |
| return 1; |
| } |
| |
| int BIO_get_port(const char *str, unsigned short *port_ptr) |
| { |
| int i; |
| struct servent *s; |
| |
| if (str == NULL) |
| { |
| BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED); |
| return(0); |
| } |
| i=atoi(str); |
| if (i != 0) |
| *port_ptr=(unsigned short)i; |
| else |
| { |
| CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME); |
| /* Note: under VMS with SOCKETSHR, it seems like the first |
| * parameter is 'char *', instead of 'const char *' |
| */ |
| #ifndef CONST_STRICT |
| s=getservbyname((char *)str,"tcp"); |
| #else |
| s=getservbyname(str,"tcp"); |
| #endif |
| if(s != NULL) |
| *port_ptr=ntohs((unsigned short)s->s_port); |
| CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME); |
| if(s == NULL) |
| { |
| if (strcmp(str,"http") == 0) |
| *port_ptr=80; |
| else if (strcmp(str,"telnet") == 0) |
| *port_ptr=23; |
| else if (strcmp(str,"socks") == 0) |
| *port_ptr=1080; |
| else if (strcmp(str,"https") == 0) |
| *port_ptr=443; |
| else if (strcmp(str,"ssl") == 0) |
| *port_ptr=443; |
| else if (strcmp(str,"ftp") == 0) |
| *port_ptr=21; |
| else if (strcmp(str,"gopher") == 0) |
| *port_ptr=70; |
| #if 0 |
| else if (strcmp(str,"wais") == 0) |
| *port_ptr=21; |
| #endif |
| else |
| { |
| SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error()); |
| ERR_add_error_data(3,"service='",str,"'"); |
| return(0); |
| } |
| } |
| } |
| return(1); |
| } |
| |
| int BIO_sock_error(int sock) |
| { |
| int j,i; |
| int size; |
| |
| #if defined(OPENSSL_SYS_BEOS_R5) |
| return 0; |
| #endif |
| |
| size=sizeof(int); |
| /* Note: under Windows the third parameter is of type (char *) |
| * whereas under other systems it is (void *) if you don't have |
| * a cast it will choke the compiler: if you do have a cast then |
| * you can either go for (char *) or (void *). |
| */ |
| i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,(void *)&size); |
| if (i < 0) |
| return(1); |
| else |
| return(j); |
| } |
| |
| #if 0 |
| long BIO_ghbn_ctrl(int cmd, int iarg, char *parg) |
| { |
| int i; |
| char **p; |
| |
| switch (cmd) |
| { |
| case BIO_GHBN_CTRL_HITS: |
| return(BIO_ghbn_hits); |
| /* break; */ |
| case BIO_GHBN_CTRL_MISSES: |
| return(BIO_ghbn_miss); |
| /* break; */ |
| case BIO_GHBN_CTRL_CACHE_SIZE: |
| return(GHBN_NUM); |
| /* break; */ |
| case BIO_GHBN_CTRL_GET_ENTRY: |
| if ((iarg >= 0) && (iarg <GHBN_NUM) && |
| (ghbn_cache[iarg].order > 0)) |
| { |
| p=(char **)parg; |
| if (p == NULL) return(0); |
| *p=ghbn_cache[iarg].name; |
| ghbn_cache[iarg].name[128]='\0'; |
| return(1); |
| } |
| return(0); |
| /* break; */ |
| case BIO_GHBN_CTRL_FLUSH: |
| for (i=0; i<GHBN_NUM; i++) |
| ghbn_cache[i].order=0; |
| break; |
| default: |
| return(0); |
| } |
| return(1); |
| } |
| #endif |
| |
| #if 0 |
| static struct hostent *ghbn_dup(struct hostent *a) |
| { |
| struct hostent *ret; |
| int i,j; |
| |
| MemCheck_off(); |
| ret=(struct hostent *)OPENSSL_malloc(sizeof(struct hostent)); |
| if (ret == NULL) return(NULL); |
| memset(ret,0,sizeof(struct hostent)); |
| |
| for (i=0; a->h_aliases[i] != NULL; i++) |
| ; |
| i++; |
| ret->h_aliases = (char **)OPENSSL_malloc(i*sizeof(char *)); |
| if (ret->h_aliases == NULL) |
| goto err; |
| memset(ret->h_aliases, 0, i*sizeof(char *)); |
| |
| for (i=0; a->h_addr_list[i] != NULL; i++) |
| ; |
| i++; |
| ret->h_addr_list=(char **)OPENSSL_malloc(i*sizeof(char *)); |
| if (ret->h_addr_list == NULL) |
| goto err; |
| memset(ret->h_addr_list, 0, i*sizeof(char *)); |
| |
| j=strlen(a->h_name)+1; |
| if ((ret->h_name=OPENSSL_malloc(j)) == NULL) goto err; |
| memcpy((char *)ret->h_name,a->h_name,j); |
| for (i=0; a->h_aliases[i] != NULL; i++) |
| { |
| j=strlen(a->h_aliases[i])+1; |
| if ((ret->h_aliases[i]=OPENSSL_malloc(j)) == NULL) goto err; |
| memcpy(ret->h_aliases[i],a->h_aliases[i],j); |
| } |
| ret->h_length=a->h_length; |
| ret->h_addrtype=a->h_addrtype; |
| for (i=0; a->h_addr_list[i] != NULL; i++) |
| { |
| if ((ret->h_addr_list[i]=OPENSSL_malloc(a->h_length)) == NULL) |
| goto err; |
| memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length); |
| } |
| if (0) |
| { |
| err: |
| if (ret != NULL) |
| ghbn_free(ret); |
| ret=NULL; |
| } |
| MemCheck_on(); |
| return(ret); |
| } |
| |
| static void ghbn_free(struct hostent *a) |
| { |
| int i; |
| |
| if(a == NULL) |
| return; |
| |
| if (a->h_aliases != NULL) |
| { |
| for (i=0; a->h_aliases[i] != NULL; i++) |
| OPENSSL_free(a->h_aliases[i]); |
| OPENSSL_free(a->h_aliases); |
| } |
| if (a->h_addr_list != NULL) |
| { |
| for (i=0; a->h_addr_list[i] != NULL; i++) |
| OPENSSL_free(a->h_addr_list[i]); |
| OPENSSL_free(a->h_addr_list); |
| } |
| if (a->h_name != NULL) OPENSSL_free(a->h_name); |
| OPENSSL_free(a); |
| } |
| |
| #endif |
| |
| struct hostent *BIO_gethostbyname(const char *name) |
| { |
| #if 1 |
| /* Caching gethostbyname() results forever is wrong, |
| * so we have to let the true gethostbyname() worry about this */ |
| #if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__)) |
| return gethostbyname((char*)name); |
| #else |
| return gethostbyname(name); |
| #endif |
| #else |
| struct hostent *ret; |
| int i,lowi=0,j; |
| unsigned long low= (unsigned long)-1; |
| |
| |
| # if 0 |
| /* It doesn't make sense to use locking here: The function interface |
| * is not thread-safe, because threads can never be sure when |
| * some other thread destroys the data they were given a pointer to. |
| */ |
| CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); |
| # endif |
| j=strlen(name); |
| if (j < 128) |
| { |
| for (i=0; i<GHBN_NUM; i++) |
| { |
| if (low > ghbn_cache[i].order) |
| { |
| low=ghbn_cache[i].order; |
| lowi=i; |
| } |
| if (ghbn_cache[i].order > 0) |
| { |
| if (strncmp(name,ghbn_cache[i].name,128) == 0) |
| break; |
| } |
| } |
| } |
| else |
| i=GHBN_NUM; |
| |
| if (i == GHBN_NUM) /* no hit*/ |
| { |
| BIO_ghbn_miss++; |
| /* Note: under VMS with SOCKETSHR, it seems like the first |
| * parameter is 'char *', instead of 'const char *' |
| */ |
| # ifndef CONST_STRICT |
| ret=gethostbyname((char *)name); |
| # else |
| ret=gethostbyname(name); |
| # endif |
| |
| if (ret == NULL) |
| goto end; |
| if (j > 128) /* too big to cache */ |
| { |
| # if 0 |
| /* If we were trying to make this function thread-safe (which |
| * is bound to fail), we'd have to give up in this case |
| * (or allocate more memory). */ |
| ret = NULL; |
| # endif |
| goto end; |
| } |
| |
| /* else add to cache */ |
| if (ghbn_cache[lowi].ent != NULL) |
| ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */ |
| ghbn_cache[lowi].name[0] = '\0'; |
| |
| if((ret=ghbn_cache[lowi].ent=ghbn_dup(ret)) == NULL) |
| { |
| BIOerr(BIO_F_BIO_GETHOSTBYNAME,ERR_R_MALLOC_FAILURE); |
| goto end; |
| } |
| strncpy(ghbn_cache[lowi].name,name,128); |
| ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits; |
| } |
| else |
| { |
| BIO_ghbn_hits++; |
| ret= ghbn_cache[i].ent; |
| ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits; |
| } |
| end: |
| # if 0 |
| CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); |
| # endif |
| return(ret); |
| #endif |
| } |
| |
| |
| int BIO_sock_init(void) |
| { |
| #ifdef OPENSSL_SYS_WINDOWS |
| static struct WSAData wsa_state; |
| |
| if (!wsa_init_done) |
| { |
| int err; |
| |
| wsa_init_done=1; |
| memset(&wsa_state,0,sizeof(wsa_state)); |
| /* Not making wsa_state available to the rest of the |
| * code is formally wrong. But the structures we use |
| * are [beleived to be] invariable among Winsock DLLs, |
| * while API availability is [expected to be] probed |
| * at run-time with DSO_global_lookup. */ |
| if (WSAStartup(0x0202,&wsa_state)!=0) |
| { |
| err=WSAGetLastError(); |
| SYSerr(SYS_F_WSASTARTUP,err); |
| BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); |
| return(-1); |
| } |
| } |
| #endif /* OPENSSL_SYS_WINDOWS */ |
| #ifdef WATT32 |
| extern int _watt_do_exit; |
| _watt_do_exit = 0; /* don't make sock_init() call exit() */ |
| if (sock_init()) |
| return (-1); |
| #endif |
| |
| #if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| WORD wVerReq; |
| WSADATA wsaData; |
| int err; |
| |
| if (!wsa_init_done) |
| { |
| wsa_init_done=1; |
| wVerReq = MAKEWORD( 2, 0 ); |
| err = WSAStartup(wVerReq,&wsaData); |
| if (err != 0) |
| { |
| SYSerr(SYS_F_WSASTARTUP,err); |
| BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); |
| return(-1); |
| } |
| } |
| #endif |
| |
| return(1); |
| } |
| |
| void BIO_sock_cleanup(void) |
| { |
| #ifdef OPENSSL_SYS_WINDOWS |
| if (wsa_init_done) |
| { |
| wsa_init_done=0; |
| #if 0 /* this call is claimed to be non-present in Winsock2 */ |
| WSACancelBlockingCall(); |
| #endif |
| WSACleanup(); |
| } |
| #elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) |
| if (wsa_init_done) |
| { |
| wsa_init_done=0; |
| WSACleanup(); |
| } |
| #endif |
| } |
| |
| #if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000 |
| |
| int BIO_socket_ioctl(int fd, long type, void *arg) |
| { |
| int i; |
| |
| #ifdef __DJGPP__ |
| i=ioctlsocket(fd,type,(char *)arg); |
| #else |
| i=ioctlsocket(fd,type,arg); |
| #endif /* __DJGPP__ */ |
| if (i < 0) |
| SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error()); |
| return(i); |
| } |
| #endif /* __VMS_VER */ |
| |
| /* The reason I have implemented this instead of using sscanf is because |
| * Visual C 1.52c gives an unresolved external when linking a DLL :-( */ |
| static int get_ip(const char *str, unsigned char ip[4]) |
| { |
| unsigned int tmp[4]; |
| int num=0,c,ok=0; |
| |
| tmp[0]=tmp[1]=tmp[2]=tmp[3]=0; |
| |
| for (;;) |
| { |
| c= *(str++); |
| if ((c >= '0') && (c <= '9')) |
| { |
| ok=1; |
| tmp[num]=tmp[num]*10+c-'0'; |
| if (tmp[num] > 255) return(0); |
| } |
| else if (c == '.') |
| { |
| if (!ok) return(-1); |
| if (num == 3) return(0); |
| num++; |
| ok=0; |
| } |
| else if (c == '\0' && (num == 3) && ok) |
| break; |
| else |
| return(0); |
| } |
| ip[0]=tmp[0]; |
| ip[1]=tmp[1]; |
| ip[2]=tmp[2]; |
| ip[3]=tmp[3]; |
| return(1); |
| } |
| |
| int BIO_get_accept_socket(char *host, int bind_mode) |
| { |
| int ret=0; |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sa_in; |
| #if OPENSSL_USE_IPV6 |
| struct sockaddr_in6 sa_in6; |
| #endif |
| } server,client; |
| int s=INVALID_SOCKET,cs,addrlen; |
| unsigned char ip[4]; |
| unsigned short port; |
| char *str=NULL,*e; |
| char *h,*p; |
| unsigned long l; |
| int err_num; |
| |
| if (BIO_sock_init() != 1) return(INVALID_SOCKET); |
| |
| if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET); |
| |
| h=p=NULL; |
| h=str; |
| for (e=str; *e; e++) |
| { |
| if (*e == ':') |
| { |
| p=e; |
| } |
| else if (*e == '/') |
| { |
| *e='\0'; |
| break; |
| } |
| } |
| if (p) *p++='\0'; /* points at last ':', '::port' is special [see below] */ |
| else p=h,h=NULL; |
| |
| #ifdef EAI_FAMILY |
| do { |
| static union { void *p; |
| int (WSAAPI *f)(const char *,const char *, |
| const struct addrinfo *, |
| struct addrinfo **); |
| } p_getaddrinfo = {NULL}; |
| static union { void *p; |
| void (WSAAPI *f)(struct addrinfo *); |
| } p_freeaddrinfo = {NULL}; |
| struct addrinfo *res,hint; |
| |
| if (p_getaddrinfo.p==NULL) |
| { |
| if ((p_getaddrinfo.p=DSO_global_lookup("getaddrinfo"))==NULL || |
| (p_freeaddrinfo.p=DSO_global_lookup("freeaddrinfo"))==NULL) |
| p_getaddrinfo.p=(void*)-1; |
| } |
| if (p_getaddrinfo.p==(void *)-1) break; |
| |
| /* '::port' enforces IPv6 wildcard listener. Some OSes, |
| * e.g. Solaris, default to IPv6 without any hint. Also |
| * note that commonly IPv6 wildchard socket can service |
| * IPv4 connections just as well... */ |
| memset(&hint,0,sizeof(hint)); |
| if (h) |
| { |
| if (strchr(h,':')) |
| { |
| if (h[1]=='\0') h=NULL; |
| #if OPENSSL_USE_IPV6 |
| hint.ai_family = AF_INET6; |
| #else |
| h=NULL; |
| #endif |
| } |
| else if (h[0]=='*' && h[1]=='\0') |
| h=NULL; |
| } |
| |
| if ((*p_getaddrinfo.f)(h,p,&hint,&res)) break; |
| |
| addrlen = res->ai_addrlen<=sizeof(server) ? |
| res->ai_addrlen : |
| sizeof(server); |
| memcpy(&server, res->ai_addr, addrlen); |
| |
| (*p_freeaddrinfo.f)(res); |
| goto again; |
| } while (0); |
| #endif |
| |
| if (!BIO_get_port(p,&port)) goto err; |
| |
| memset((char *)&server,0,sizeof(server)); |
| server.sa_in.sin_family=AF_INET; |
| server.sa_in.sin_port=htons(port); |
| addrlen = sizeof(server.sa_in); |
| |
| if (h == NULL || strcmp(h,"*") == 0) |
| server.sa_in.sin_addr.s_addr=INADDR_ANY; |
| else |
| { |
| if (!BIO_get_host_ip(h,&(ip[0]))) goto err; |
| l=(unsigned long) |
| ((unsigned long)ip[0]<<24L)| |
| ((unsigned long)ip[1]<<16L)| |
| ((unsigned long)ip[2]<< 8L)| |
| ((unsigned long)ip[3]); |
| server.sa_in.sin_addr.s_addr=htonl(l); |
| } |
| |
| again: |
| s=socket(server.sa.sa_family,SOCK_STREAM,SOCKET_PROTOCOL); |
| if (s == INVALID_SOCKET) |
| { |
| SYSerr(SYS_F_SOCKET,get_last_socket_error()); |
| ERR_add_error_data(3,"port='",host,"'"); |
| BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET); |
| goto err; |
| } |
| |
| #ifdef SO_REUSEADDR |
| if (bind_mode == BIO_BIND_REUSEADDR) |
| { |
| int i=1; |
| |
| ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i)); |
| bind_mode=BIO_BIND_NORMAL; |
| } |
| #endif |
| if (bind(s,&server.sa,addrlen) == -1) |
| { |
| #ifdef SO_REUSEADDR |
| err_num=get_last_socket_error(); |
| if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) && |
| (err_num == EADDRINUSE)) |
| { |
| client = server; |
| if (h == NULL || strcmp(h,"*") == 0) |
| { |
| #if OPENSSL_USE_IPV6 |
| if (client.sa.sa_family == AF_INET6) |
| { |
| memset(&client.sa_in6.sin6_addr,0,sizeof(client.sa_in6.sin6_addr)); |
| client.sa_in6.sin6_addr.s6_addr[15]=1; |
| } |
| else |
| #endif |
| if (client.sa.sa_family == AF_INET) |
| { |
| client.sa_in.sin_addr.s_addr=htonl(0x7F000001); |
| } |
| else goto err; |
| } |
| cs=socket(client.sa.sa_family,SOCK_STREAM,SOCKET_PROTOCOL); |
| if (cs != INVALID_SOCKET) |
| { |
| int ii; |
| ii=connect(cs,&client.sa,addrlen); |
| closesocket(cs); |
| if (ii == INVALID_SOCKET) |
| { |
| bind_mode=BIO_BIND_REUSEADDR; |
| closesocket(s); |
| goto again; |
| } |
| /* else error */ |
| } |
| /* else error */ |
| } |
| #endif |
| SYSerr(SYS_F_BIND,err_num); |
| ERR_add_error_data(3,"port='",host,"'"); |
| BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET); |
| goto err; |
| } |
| if (listen(s,MAX_LISTEN) == -1) |
| { |
| SYSerr(SYS_F_BIND,get_last_socket_error()); |
| ERR_add_error_data(3,"port='",host,"'"); |
| BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET); |
| goto err; |
| } |
| ret=1; |
| err: |
| if (str != NULL) OPENSSL_free(str); |
| if ((ret == 0) && (s != INVALID_SOCKET)) |
| { |
| closesocket(s); |
| s= INVALID_SOCKET; |
| } |
| return(s); |
| } |
| |
| int BIO_accept(int sock, char **addr) |
| { |
| int ret=INVALID_SOCKET; |
| unsigned long l; |
| unsigned short port; |
| char *p; |
| |
| struct { |
| /* |
| * As for following union. Trouble is that there are platforms |
| * that have socklen_t and there are platforms that don't, on |
| * some platforms socklen_t is int and on some size_t. So what |
| * one can do? One can cook #ifdef spaghetti, which is nothing |
| * but masochistic. Or one can do union between int and size_t. |
| * One naturally does it primarily for 64-bit platforms where |
| * sizeof(int) != sizeof(size_t). But would it work? Note that |
| * if size_t member is initialized to 0, then later int member |
| * assignment naturally does the job on little-endian platforms |
| * regardless accept's expectations! What about big-endians? |
| * If accept expects int*, then it works, and if size_t*, then |
| * length value would appear as unreasonably large. But this |
| * won't prevent it from filling in the address structure. The |
| * trouble of course would be if accept returns more data than |
| * actual buffer can accomodate and overwrite stack... That's |
| * where early OPENSSL_assert comes into picture. Besides, the |
| * only 64-bit big-endian platform found so far that expects |
| * size_t* is HP-UX, where stack grows towards higher address. |
| * <appro> |
| */ |
| union { size_t s; int i; } len; |
| union { |
| struct sockaddr sa; |
| struct sockaddr_in sa_in; |
| #if OPENSSL_USE_IPV6 |
| struct sockaddr_in6 sa_in6; |
| #endif |
| } from; |
| } sa; |
| |
| sa.len.s=0; |
| sa.len.i=sizeof(sa.from); |
| memset(&sa.from,0,sizeof(sa.from)); |
| ret=accept(sock,&sa.from.sa,(void *)&sa.len); |
| if (sizeof(sa.len.i)!=sizeof(sa.len.s) && sa.len.i==0) |
| { |
| OPENSSL_assert(sa.len.s<=sizeof(sa.from)); |
| sa.len.i = (int)sa.len.s; |
| /* use sa.len.i from this point */ |
| } |
| if (ret == INVALID_SOCKET) |
| { |
| if(BIO_sock_should_retry(ret)) return -2; |
| SYSerr(SYS_F_ACCEPT,get_last_socket_error()); |
| BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR); |
| goto end; |
| } |
| |
| if (addr == NULL) goto end; |
| |
| #ifdef EAI_FAMILY |
| do { |
| char h[NI_MAXHOST],s[NI_MAXSERV]; |
| size_t nl; |
| static union { void *p; |
| int (WSAAPI *f)(const struct sockaddr *,size_t/*socklen_t*/, |
| char *,size_t,char *,size_t,int); |
| } p_getnameinfo = {NULL}; |
| /* 2nd argument to getnameinfo is specified to |
| * be socklen_t. Unfortunately there is a number |
| * of environments where socklen_t is not defined. |
| * As it's passed by value, it's safe to pass it |
| * as size_t... <appro> */ |
| |
| if (p_getnameinfo.p==NULL) |
| { |
| if ((p_getnameinfo.p=DSO_global_lookup("getnameinfo"))==NULL) |
| p_getnameinfo.p=(void*)-1; |
| } |
| if (p_getnameinfo.p==(void *)-1) break; |
| |
| if ((*p_getnameinfo.f)(&sa.from.sa,sa.len.i,h,sizeof(h),s,sizeof(s), |
| NI_NUMERICHOST|NI_NUMERICSERV)) break; |
| nl = strlen(h)+strlen(s)+2; |
| p = *addr; |
| if (p) { *p = '\0'; p = OPENSSL_realloc(p,nl); } |
| else { p = OPENSSL_malloc(nl); } |
| if (p==NULL) |
| { |
| BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE); |
| goto end; |
| } |
| *addr = p; |
| BIO_snprintf(*addr,nl,"%s:%s",h,s); |
| goto end; |
| } while(0); |
| #endif |
| if (sa.from.sa.sa_family != AF_INET) goto end; |
| l=ntohl(sa.from.sa_in.sin_addr.s_addr); |
| port=ntohs(sa.from.sa_in.sin_port); |
| if (*addr == NULL) |
| { |
| if ((p=OPENSSL_malloc(24)) == NULL) |
| { |
| BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE); |
| goto end; |
| } |
| *addr=p; |
| } |
| BIO_snprintf(*addr,24,"%d.%d.%d.%d:%d", |
| (unsigned char)(l>>24L)&0xff, |
| (unsigned char)(l>>16L)&0xff, |
| (unsigned char)(l>> 8L)&0xff, |
| (unsigned char)(l )&0xff, |
| port); |
| end: |
| return(ret); |
| } |
| |
| int BIO_set_tcp_ndelay(int s, int on) |
| { |
| int ret=0; |
| #if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP)) |
| int opt; |
| |
| #ifdef SOL_TCP |
| opt=SOL_TCP; |
| #else |
| #ifdef IPPROTO_TCP |
| opt=IPPROTO_TCP; |
| #endif |
| #endif |
| |
| ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on)); |
| #endif |
| return(ret == 0); |
| } |
| #endif |
| |
| int BIO_socket_nbio(int s, int mode) |
| { |
| int ret= -1; |
| int l; |
| |
| l=mode; |
| #ifdef FIONBIO |
| ret=BIO_socket_ioctl(s,FIONBIO,&l); |
| #endif |
| return(ret == 0); |
| } |