--- /dev/null
+/* 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
+# if defined(OPENSSL_SYS_VMS)
+ /* 2011-02-18 SMS.
+ * VMS ioctl() can't tolerate a 64-bit "void *arg", but we
+ * observe that all the consumers pass in an "unsigned long *",
+ * so we arrange a local copy with a short pointer, and use
+ * that, instead.
+ */
+# if __INITIAL_POINTER_SIZE == 64
+# define ARG arg_32p
+# pragma pointer_size save
+# pragma pointer_size 32
+ unsigned long arg_32;
+ unsigned long *arg_32p;
+# pragma pointer_size restore
+ arg_32p = &arg_32;
+ arg_32 = *((unsigned long *) arg);
+# else /* __INITIAL_POINTER_SIZE == 64 */
+# define ARG arg
+# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
+# else /* defined(OPENSSL_SYS_VMS) */
+# define ARG arg
+# endif /* defined(OPENSSL_SYS_VMS) [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));
+ hint.ai_flags = AI_PASSIVE;
+ 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')
+ {
+ hint.ai_family = AF_INET;
+ 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) &&
+#ifdef OPENSSL_SYS_WINDOWS
+ /* Some versions of Windows define EADDRINUSE to
+ * a dummy value.
+ */
+ (err_num == WSAEADDRINUSE))
+#else
+ (err_num == EADDRINUSE))
+#endif
+ {
+ 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);
+ }
+
+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);
+ }
+#endif
projects / cassiopeia.git / blobdiff