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/* crypto/bio/b_sock.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* This package is an SSL implementation written
6
* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
9
* 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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* 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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* 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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* 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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* 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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* 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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#include <openssl/bio.h>
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#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK)
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#if defined(NETWARE_CLIB)
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#include <sys/ioctl.h>
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#ifndef OPENSSL_NO_SOCK
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#ifdef OPENSSL_SYS_WIN16
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#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
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#define SOCKET_PROTOCOL IPPROTO_TCP
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#define MAX_LISTEN SO_MAXCONN
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#elif defined(SOMAXCONN)
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#define MAX_LISTEN SOMAXCONN
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#if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK))
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static int wsa_init_done=0;
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static unsigned long BIO_ghbn_hits=0L;
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static unsigned long BIO_ghbn_miss=0L;
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static struct ghbn_cache_st
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} ghbn_cache[GHBN_NUM];
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static int get_ip(const char *str,unsigned char *ip);
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static void ghbn_free(struct hostent *a);
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static struct hostent *ghbn_dup(struct hostent *a);
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int BIO_get_host_ip(const char *str, unsigned char *ip)
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BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS);
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/* At this point, we have something that is most probably correct
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in some way, so let's init the socket. */
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if (BIO_sock_init() != 1)
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return 0; /* don't generate another error code here */
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/* If the string actually contained an IP address, we need not do
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if (i > 0) return(1);
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/* do a gethostbyname */
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CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
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he=BIO_gethostbyname(str);
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BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP);
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/* cast to short because of win16 winsock definition */
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if ((short)he->h_addrtype != AF_INET)
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BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
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ip[i]=he->h_addr_list[0][i];
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CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
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ERR_add_error_data(2,"host=",str);
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int BIO_get_port(const char *str, unsigned short *port_ptr)
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BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED);
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*port_ptr=(unsigned short)i;
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CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME);
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/* Note: under VMS with SOCKETSHR, it seems like the first
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* parameter is 'char *', instead of 'const char *'
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s=getservbyname((char *)str,"tcp");
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s=getservbyname(str,"tcp");
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*port_ptr=ntohs((unsigned short)s->s_port);
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CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME);
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if (strcmp(str,"http") == 0)
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else if (strcmp(str,"telnet") == 0)
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else if (strcmp(str,"socks") == 0)
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else if (strcmp(str,"https") == 0)
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else if (strcmp(str,"ssl") == 0)
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else if (strcmp(str,"ftp") == 0)
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else if (strcmp(str,"gopher") == 0)
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else if (strcmp(str,"wais") == 0)
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SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error());
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ERR_add_error_data(3,"service='",str,"'");
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int BIO_sock_error(int sock)
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/* Note: under Windows the third parameter is of type (char *)
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* whereas under other systems it is (void *) if you don't have
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* a cast it will choke the compiler: if you do have a cast then
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* you can either go for (char *) or (void *).
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i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,(void *)&size);
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long BIO_ghbn_ctrl(int cmd, int iarg, char *parg)
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case BIO_GHBN_CTRL_HITS:
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return(BIO_ghbn_hits);
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case BIO_GHBN_CTRL_MISSES:
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return(BIO_ghbn_miss);
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case BIO_GHBN_CTRL_CACHE_SIZE:
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case BIO_GHBN_CTRL_GET_ENTRY:
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if ((iarg >= 0) && (iarg <GHBN_NUM) &&
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(ghbn_cache[iarg].order > 0))
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if (p == NULL) return(0);
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*p=ghbn_cache[iarg].name;
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ghbn_cache[iarg].name[128]='\0';
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case BIO_GHBN_CTRL_FLUSH:
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for (i=0; i<GHBN_NUM; i++)
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ghbn_cache[i].order=0;
283
static struct hostent *ghbn_dup(struct hostent *a)
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ret=(struct hostent *)OPENSSL_malloc(sizeof(struct hostent));
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if (ret == NULL) return(NULL);
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memset(ret,0,sizeof(struct hostent));
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for (i=0; a->h_aliases[i] != NULL; i++)
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ret->h_aliases = (char **)OPENSSL_malloc(i*sizeof(char *));
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if (ret->h_aliases == NULL)
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memset(ret->h_aliases, 0, i*sizeof(char *));
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for (i=0; a->h_addr_list[i] != NULL; i++)
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ret->h_addr_list=(char **)OPENSSL_malloc(i*sizeof(char *));
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if (ret->h_addr_list == NULL)
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memset(ret->h_addr_list, 0, i*sizeof(char *));
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j=strlen(a->h_name)+1;
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if ((ret->h_name=OPENSSL_malloc(j)) == NULL) goto err;
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memcpy((char *)ret->h_name,a->h_name,j);
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for (i=0; a->h_aliases[i] != NULL; i++)
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j=strlen(a->h_aliases[i])+1;
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if ((ret->h_aliases[i]=OPENSSL_malloc(j)) == NULL) goto err;
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memcpy(ret->h_aliases[i],a->h_aliases[i],j);
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ret->h_length=a->h_length;
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ret->h_addrtype=a->h_addrtype;
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for (i=0; a->h_addr_list[i] != NULL; i++)
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if ((ret->h_addr_list[i]=OPENSSL_malloc(a->h_length)) == NULL)
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memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length);
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static void ghbn_free(struct hostent *a)
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if (a->h_aliases != NULL)
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for (i=0; a->h_aliases[i] != NULL; i++)
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OPENSSL_free(a->h_aliases[i]);
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OPENSSL_free(a->h_aliases);
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if (a->h_addr_list != NULL)
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for (i=0; a->h_addr_list[i] != NULL; i++)
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OPENSSL_free(a->h_addr_list[i]);
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OPENSSL_free(a->h_addr_list);
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if (a->h_name != NULL) OPENSSL_free(a->h_name);
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struct hostent *BIO_gethostbyname(const char *name)
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/* Caching gethostbyname() results forever is wrong,
366
* so we have to let the true gethostbyname() worry about this */
367
#if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__))
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return gethostbyname((char*)name);
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return gethostbyname(name);
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unsigned long low= (unsigned long)-1;
379
/* It doesn't make sense to use locking here: The function interface
380
* is not thread-safe, because threads can never be sure when
381
* some other thread destroys the data they were given a pointer to.
383
CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
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for (i=0; i<GHBN_NUM; i++)
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if (low > ghbn_cache[i].order)
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low=ghbn_cache[i].order;
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if (ghbn_cache[i].order > 0)
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if (strncmp(name,ghbn_cache[i].name,128) == 0)
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if (i == GHBN_NUM) /* no hit*/
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/* Note: under VMS with SOCKETSHR, it seems like the first
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* parameter is 'char *', instead of 'const char *'
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# ifndef CONST_STRICT
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ret=gethostbyname((char *)name);
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ret=gethostbyname(name);
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if (j > 128) /* too big to cache */
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/* If we were trying to make this function thread-safe (which
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* is bound to fail), we'd have to give up in this case
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* (or allocate more memory). */
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/* else add to cache */
431
if (ghbn_cache[lowi].ent != NULL)
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ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */
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ghbn_cache[lowi].name[0] = '\0';
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if((ret=ghbn_cache[lowi].ent=ghbn_dup(ret)) == NULL)
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BIOerr(BIO_F_BIO_GETHOSTBYNAME,ERR_R_MALLOC_FAILURE);
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strncpy(ghbn_cache[lowi].name,name,128);
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ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits;
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ret= ghbn_cache[i].ent;
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ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits;
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CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
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int BIO_sock_init(void)
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#ifdef OPENSSL_SYS_WINDOWS
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static struct WSAData wsa_state;
468
memset(&wsa_state,0,sizeof(wsa_state));
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if (WSAStartup(0x0101,&wsa_state)!=0)
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err=WSAGetLastError();
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SYSerr(SYS_F_WSASTARTUP,err);
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BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP);
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#endif /* OPENSSL_SYS_WINDOWS */
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extern int _watt_do_exit;
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_watt_do_exit = 0; /* don't make sock_init() call exit() */
485
#if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
493
wVerReq = MAKEWORD( 2, 0 );
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err = WSAStartup(wVerReq,&wsaData);
497
SYSerr(SYS_F_WSASTARTUP,err);
498
BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP);
507
void BIO_sock_cleanup(void)
509
#ifdef OPENSSL_SYS_WINDOWS
513
#ifndef OPENSSL_SYS_WINCE
514
WSACancelBlockingCall(); /* Winsock 1.1 specific */
518
#elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)
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#if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000
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int BIO_socket_ioctl(int fd, long type, void *arg)
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i=ioctlsocket(fd,type,(char *)arg);
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i=ioctlsocket(fd,type,arg);
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#endif /* __DJGPP__ */
539
SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error());
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#endif /* __VMS_VER */
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/* The reason I have implemented this instead of using sscanf is because
545
* Visual C 1.52c gives an unresolved external when linking a DLL :-( */
546
static int get_ip(const char *str, unsigned char ip[4])
551
tmp[0]=tmp[1]=tmp[2]=tmp[3]=0;
556
if ((c >= '0') && (c <= '9'))
559
tmp[num]=tmp[num]*10+c-'0';
560
if (tmp[num] > 255) return(0);
565
if (num == 3) return(0);
569
else if (c == '\0' && (num == 3) && ok)
581
int BIO_get_accept_socket(char *host, int bind_mode)
584
struct sockaddr_in server,client;
585
int s=INVALID_SOCKET,cs;
593
if (BIO_sock_init() != 1) return(INVALID_SOCKET);
595
if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET);
619
if (!BIO_get_port(p,&port)) goto err;
621
memset((char *)&server,0,sizeof(server));
622
server.sin_family=AF_INET;
623
server.sin_port=htons(port);
625
if (strcmp(h,"*") == 0)
626
server.sin_addr.s_addr=INADDR_ANY;
629
if (!BIO_get_host_ip(h,&(ip[0]))) goto err;
631
((unsigned long)ip[0]<<24L)|
632
((unsigned long)ip[1]<<16L)|
633
((unsigned long)ip[2]<< 8L)|
634
((unsigned long)ip[3]);
635
server.sin_addr.s_addr=htonl(l);
639
s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
640
if (s == INVALID_SOCKET)
642
SYSerr(SYS_F_SOCKET,get_last_socket_error());
643
ERR_add_error_data(3,"port='",host,"'");
644
BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET);
649
if (bind_mode == BIO_BIND_REUSEADDR)
653
ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i));
654
bind_mode=BIO_BIND_NORMAL;
657
if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
660
err_num=get_last_socket_error();
661
if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
662
#ifdef OPENSSL_SYS_WINDOWS
663
/* Some versions of Windows define EADDRINUSE to
666
(err_num == WSAEADDRINUSE))
668
(err_num == EADDRINUSE))
671
memcpy((char *)&client,(char *)&server,sizeof(server));
672
if (strcmp(h,"*") == 0)
673
client.sin_addr.s_addr=htonl(0x7F000001);
674
cs=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
675
if (cs != INVALID_SOCKET)
678
ii=connect(cs,(struct sockaddr *)&client,
681
if (ii == INVALID_SOCKET)
683
bind_mode=BIO_BIND_REUSEADDR;
692
SYSerr(SYS_F_BIND,err_num);
693
ERR_add_error_data(3,"port='",host,"'");
694
BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET);
697
if (listen(s,MAX_LISTEN) == -1)
699
SYSerr(SYS_F_BIND,get_last_socket_error());
700
ERR_add_error_data(3,"port='",host,"'");
701
BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET);
706
if (str != NULL) OPENSSL_free(str);
707
if ((ret == 0) && (s != INVALID_SOCKET))
715
int BIO_accept(int sock, char **addr)
717
int ret=INVALID_SOCKET;
718
static struct sockaddr_in from;
724
memset((char *)&from,0,sizeof(from));
726
/* Note: under VMS with SOCKETSHR the fourth parameter is currently
727
* of type (int *) whereas under other systems it is (void *) if
728
* you don't have a cast it will choke the compiler: if you do
729
* have a cast then you can either go for (int *) or (void *).
731
ret=accept(sock,(struct sockaddr *)&from,(void *)&len);
732
if (ret == INVALID_SOCKET)
734
if(BIO_sock_should_retry(ret)) return -2;
735
SYSerr(SYS_F_ACCEPT,get_last_socket_error());
736
BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR);
740
if (addr == NULL) goto end;
742
l=ntohl(from.sin_addr.s_addr);
743
port=ntohs(from.sin_port);
746
if ((p=OPENSSL_malloc(24)) == NULL)
748
BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE);
753
BIO_snprintf(*addr,24,"%d.%d.%d.%d:%d",
754
(unsigned char)(l>>24L)&0xff,
755
(unsigned char)(l>>16L)&0xff,
756
(unsigned char)(l>> 8L)&0xff,
757
(unsigned char)(l )&0xff,
763
int BIO_set_tcp_ndelay(int s, int on)
766
#if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
777
ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on));
783
int BIO_socket_nbio(int s, int mode)
790
ret=BIO_socket_ioctl(s,FIONBIO,&l);
added
removed
crypto/bio/b_sock.c
