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-rw-r--r--crypto/bio/b_sock.c512
1 files changed, 512 insertions, 0 deletions
diff --git a/crypto/bio/b_sock.c b/crypto/bio/b_sock.c
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+/* crypto/bio/b_sock.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#ifndef NO_SOCK
+
+#include <stdio.h>
+#include <errno.h>
+#define USE_SOCKETS
+#include "cryptlib.h"
+#include "bio.h"
+
+/* BIOerr(BIO_F_WSASTARTUP,BIO_R_WSASTARTUP ); */
+
+#ifdef WIN16
+#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
+#else
+#define SOCKET_PROTOCOL IPPROTO_TCP
+#endif
+
+#ifdef WINDOWS
+static int wsa_init_done=0;
+#endif
+
+unsigned long BIO_ghbn_hits=0L;
+unsigned long BIO_ghbn_miss=0L;
+
+#ifndef NOPROTO
+static int get_ip(char *str,unsigned char *ip);
+#else
+static int get_ip();
+#endif
+
+int BIO_get_host_ip(str,ip)
+char *str;
+unsigned char *ip;
+ {
+ int i;
+ struct hostent *he;
+
+ i=get_ip(str,ip);
+ if (i > 0) return(1);
+ if (i < 0)
+ {
+ BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS);
+ return(0);
+ }
+ else
+ { /* do a gethostbyname */
+ if (!BIO_sock_init()) return(0);
+
+ he=BIO_gethostbyname(str);
+ if (he == NULL)
+ {
+ BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP);
+ return(0);
+ }
+
+ /* 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);
+ return(0);
+ }
+ for (i=0; i<4; i++)
+ ip[i]=he->h_addr_list[0][i];
+ }
+ return(1);
+ }
+
+int BIO_get_port(str,port_ptr)
+char *str;
+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
+ {
+ s=getservbyname(str,"tcp");
+ 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,errno);
+ return(0);
+ }
+ return(1);
+ }
+ *port_ptr=htons((unsigned short)s->s_port);
+ }
+ return(1);
+ }
+
+int BIO_sock_error(sock)
+int sock;
+ {
+ int j,i,size;
+
+ size=sizeof(int);
+
+ i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(char *)&j,&size);
+ if (i < 0)
+ return(1);
+ else
+ return(j);
+ }
+
+#define GHBN_NUM 4
+static struct ghbn_cache_st
+ {
+ char name[128];
+ struct hostent ent;
+ unsigned long order;
+ } ghbn_cache[GHBN_NUM];
+
+struct hostent *BIO_gethostbyname(name)
+char *name;
+ {
+ struct hostent *ret;
+ int i,lowi=0;
+ unsigned long low= (unsigned long)-1;
+
+ CRYPTO_w_lock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
+ if (strlen(name) < 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++;
+ ret=gethostbyname(name);
+ if (ret == NULL) return(NULL);
+ /* else add to cache */
+ strncpy(ghbn_cache[lowi].name,name,128);
+ memcpy((char *)&(ghbn_cache[lowi].ent),ret,sizeof(struct hostent));
+ 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;
+ }
+ CRYPTO_w_unlock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
+ return(ret);
+ }
+
+int BIO_sock_init()
+ {
+#ifdef WINDOWS
+ static struct WSAData wsa_state;
+
+ if (!wsa_init_done)
+ {
+ int err;
+
+#ifdef SIGINT
+ signal(SIGINT,(void (*)(int))BIO_sock_cleanup);
+#endif
+ wsa_init_done=1;
+ memset(&wsa_state,0,sizeof(wsa_state));
+ if (WSAStartup(0x0101,&wsa_state)!=0)
+ {
+ err=WSAGetLastError();
+ SYSerr(SYS_F_WSASTARTUP,err);
+ BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP);
+ return(-1);
+ }
+ }
+#endif /* WINDOWS */
+ return(1);
+ }
+
+void BIO_sock_cleanup()
+ {
+#ifdef WINDOWS
+ if (wsa_init_done)
+ {
+ wsa_init_done=0;
+ WSACancelBlockingCall();
+ WSACleanup();
+ }
+#endif
+ }
+
+int BIO_socket_ioctl(fd,type,arg)
+int fd;
+long type;
+unsigned long *arg;
+ {
+ int i,err;
+
+#ifdef WINDOWS
+ i=ioctlsocket(fd,type,arg);
+#else
+ i=ioctl(fd,type,arg);
+#endif
+ if (i < 0)
+ {
+#ifdef WINDOWS
+ err=WSAGetLastError();
+#else
+ err=errno;
+#endif
+ SYSerr(SYS_F_IOCTLSOCKET,err);
+ }
+ return(i);
+ }
+
+/* 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(str,ip)
+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(-1);
+ }
+ else if (c == '.')
+ {
+ if (!ok) return(-1);
+ if (num == 3) break;
+ num++;
+ ok=0;
+ }
+ else if ((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(host)
+char *host;
+ {
+ int ret=0;
+ struct sockaddr_in server;
+ int s= -1;
+ unsigned char ip[4];
+ short port;
+ char *str,*h,*p,*e;
+ unsigned long l;
+
+ if (!BIO_sock_init()) 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[1]);
+ *e='\0';
+ }
+ else if (*e == '/')
+ {
+ *e='\0';
+ break;
+ }
+ }
+
+ if (p == NULL)
+ {
+ p=h;
+ h="*";
+ }
+
+ if (!BIO_get_port(p,&port)) return(INVALID_SOCKET);
+
+ memset((char *)&server,0,sizeof(server));
+ server.sin_family=AF_INET;
+ server.sin_port=htons((unsigned short)port);
+
+ if (strcmp(h,"*") == 0)
+ server.sin_addr.s_addr=INADDR_ANY;
+ else
+ {
+ if (!BIO_get_host_ip(h,&(ip[0]))) return(INVALID_SOCKET);
+ l=(unsigned long)
+ ((unsigned long)ip[0]<<24L)|
+ ((unsigned long)ip[0]<<16L)|
+ ((unsigned long)ip[0]<< 8L)|
+ ((unsigned long)ip[0]);
+ server.sin_addr.s_addr=htonl(l);
+ }
+
+ s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
+ if (s == INVALID_SOCKET)
+ {
+#ifdef WINDOWS
+ errno=WSAGetLastError();
+#endif
+ SYSerr(SYS_F_SOCKET,errno);
+ BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET);
+ goto err;
+ }
+ if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
+ {
+#ifdef WINDOWS
+ errno=WSAGetLastError();
+#endif
+ SYSerr(SYS_F_BIND,errno);
+ BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET);
+ goto err;
+ }
+ if (listen(s,5) == -1)
+ {
+#ifdef WINDOWS
+ errno=WSAGetLastError();
+#endif
+ SYSerr(SYS_F_LISTEN,errno);
+ BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET);
+ goto err;
+ }
+ ret=1;
+err:
+ if (str != NULL) Free(str);
+ if ((ret == 0) && (s != INVALID_SOCKET))
+ {
+#ifdef WINDOWS
+ closesocket(s);
+#else
+ close(s);
+#endif
+ s= INVALID_SOCKET;
+ }
+ return(s);
+ }
+
+int BIO_accept(sock,addr)
+int sock;
+char **addr;
+ {
+ int ret=INVALID_SOCKET;
+ static struct sockaddr_in from;
+ unsigned long l;
+ short port;
+ int len;
+ char *p;
+
+ memset((char *)&from,0,sizeof(from));
+ len=sizeof(from);
+ ret=accept(sock,(struct sockaddr *)&from,&len);
+ if (ret == INVALID_SOCKET)
+ {
+#ifdef WINDOWS
+ errno=WSAGetLastError();
+#endif
+ SYSerr(SYS_F_ACCEPT,errno);
+ BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR);
+ goto end;
+ }
+
+ if (addr == NULL) goto end;
+
+ l=ntohl(from.sin_addr.s_addr);
+ port=ntohs(from.sin_port);
+ if (*addr == NULL)
+ {
+ if ((p=Malloc(24)) == NULL)
+ {
+ BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE);
+ goto end;
+ }
+ *addr=p;
+ }
+ sprintf(*addr,"%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(s,on)
+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
+
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