1 /* crypto/bio/bss_conn.c */
2 /* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * 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
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
67 /* BIOerr(BIO_F_WSASTARTUP,BIO_R_WSASTARTUP ); */
70 #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
72 #define SOCKET_PROTOCOL IPPROTO_TCP
75 typedef struct bio_connect_st
86 struct sockaddr_in them;
88 /* int socket; this will be kept in bio->num so that it is
89 * compatable with the bss_sock bio */
94 static int conn_write(BIO *h,char *buf,int num);
95 static int conn_read(BIO *h,char *buf,int size);
96 static int conn_puts(BIO *h,char *str);
97 static long conn_ctrl(BIO *h,int cmd,long arg1,char *arg2);
98 static int conn_new(BIO *h);
99 static int conn_free(BIO *data);
101 static int conn_write();
102 static int conn_read();
103 static int conn_puts();
104 static long conn_ctrl();
105 static int conn_new();
106 static int conn_free();
111 static int conn_state(BIO *b, BIO_CONNECT *c);
112 static void conn_close_socket(BIO *data);
113 BIO_CONNECT *BIO_CONNECT_new(void );
114 void BIO_CONNECT_free(BIO_CONNECT *a);
118 static int conn_state();
119 static void conn_close_socket();
120 BIO_CONNECT *BIO_CONNECT_new();
121 void BIO_CONNECT_free();
125 #define CONN_S_BEFORE 1
126 #define CONN_S_GET_IP 2
127 #define CONN_S_GET_PORT 3
128 #define CONN_S_CREATE_SOCKET 4
129 #define CONN_S_CONNECT 5
131 #define CONN_S_BLOCKED_CONNECT 7
132 #define CONN_S_NBIO 8
134 static BIO_METHOD methods_connectp=
136 BIO_TYPE_CONNECT,"socket connect",
140 NULL, /* connect_gets, */
146 static int conn_state(b,c)
160 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_HOSTHNAME_SPECIFIED);
163 for ( ; *p != '\0'; p++)
165 if ((*p == ':') || (*p == '/')) break;
169 if ((i == ':') || (i == '/'))
181 if (c->param_port != NULL)
183 c->param_port=BUF_strdup(p);
189 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_PORT_SPECIFIED);
192 c->state=CONN_S_GET_IP;
195 if (BIO_get_host_ip(c->param_hostname,&(c->ip[0])) <= 0)
197 c->state=CONN_S_GET_PORT;
199 case CONN_S_GET_PORT:
200 if (BIO_get_port(c->param_port,&c->port) <= 0)
202 c->state=CONN_S_CREATE_SOCKET;
204 case CONN_S_CREATE_SOCKET:
205 /* now setup address */
206 memset((char *)&c->them,0,sizeof(c->them));
207 c->them.sin_family=AF_INET;
208 c->them.sin_port=htons((unsigned short)c->port);
210 ((unsigned long)c->ip[0]<<24L)|
211 ((unsigned long)c->ip[1]<<16L)|
212 ((unsigned long)c->ip[2]<< 8L)|
213 ((unsigned long)c->ip[3]);
214 c->them.sin_addr.s_addr=htonl(l);
215 c->state=CONN_S_CREATE_SOCKET;
217 ret=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
218 if (ret == INVALID_SOCKET)
220 SYSerr(SYS_F_SOCKET,errno);
221 BIOerr(BIO_F_CONN_STATE,BIO_R_UNABLE_TO_CREATE_SOCKET);
225 c->state=CONN_S_NBIO;
232 ret=BIO_socket_ioctl(b->num,FIONBIO,&l);
235 BIOerr(BIO_F_CONN_STATE,BIO_R_ERROR_SETTING_NBIO);
240 c->state=CONN_S_CONNECT;
243 BIO_clear_retry_flags(b);
245 (struct sockaddr *)&c->them,
250 if (BIO_sock_should_retry(ret))
252 BIO_set_retry_special(b);
253 c->state=CONN_S_BLOCKED_CONNECT;
254 b->retry_reason=BIO_RR_CONNECT;
258 SYSerr(SYS_F_CONNECT,errno);
259 BIOerr(BIO_F_CONN_STATE,BIO_R_CONNECT_ERROR);
269 case CONN_S_BLOCKED_CONNECT:
270 BIO_clear_retry_flags(b);
271 i=BIO_sock_error(b->num);
274 SYSerr(SYS_F_CONNECT,i);
275 BIOerr(BIO_F_CONN_STATE,BIO_R_NBIO_CONNECT_ERROR);
293 BIO_CONNECT *BIO_CONNECT_new()
297 if ((ret=(BIO_CONNECT *)Malloc(sizeof(BIO_CONNECT))) == NULL)
299 ret->state=CONN_S_BEFORE;
300 ret->param_hostname=NULL;
301 ret->param_port=NULL;
308 memset((char *)&ret->them,0,sizeof(ret->them));
313 void BIO_CONNECT_free(a)
316 if (a->param_hostname != NULL)
317 Free(a->param_hostname);
318 if (a->param_port != NULL)
323 BIO_METHOD *BIO_s_connect()
325 return(&methods_connectp);
328 static int conn_new(bi)
332 bi->num=INVALID_SOCKET;
334 if ((bi->ptr=(char *)BIO_CONNECT_new()) == NULL)
340 static void conn_close_socket(bio)
345 c=(BIO_CONNECT *)bio->ptr;
346 if (bio->num != INVALID_SOCKET)
348 /* Only do a shutdown if things were established */
349 if (c->state == CONN_S_OK)
350 shutdown(bio->num,2);
352 closesocket(bio->num);
356 bio->num=INVALID_SOCKET;
360 static int conn_free(a)
365 if (a == NULL) return(0);
366 data=(BIO_CONNECT *)a->ptr;
370 conn_close_socket(a);
371 BIO_CONNECT_free(data);
379 static int conn_read(b,out,outl)
387 data=(BIO_CONNECT *)b->ptr;
388 if (data->state != CONN_S_OK)
390 ret=conn_state(b,data);
391 if (ret <= 0) return(ret);
398 ret=recv(b->num,out,outl,0);
400 ret=read(b->num,out,outl);
402 BIO_clear_retry_flags(b);
405 if (BIO_sock_should_retry(ret))
406 BIO_set_retry_read(b);
412 static int conn_write(b,in,inl)
420 data=(BIO_CONNECT *)b->ptr;
421 if (data->state != CONN_S_OK)
423 ret=conn_state(b,data);
424 if (ret <= 0) return(ret);
429 ret=send(b->num,in,inl,0);
431 ret=write(b->num,in,inl);
433 BIO_clear_retry_flags(b);
436 if (BIO_sock_should_retry(ret))
437 BIO_set_retry_write(b);
442 static long conn_ctrl(b,cmd,num,ptr)
453 data=(BIO_CONNECT *)b->ptr;
459 data->state=CONN_S_BEFORE;
460 conn_close_socket(b);
463 case BIO_C_DO_STATE_MACHINE:
464 /* use this one to start the connection */
465 if (!data->state != CONN_S_OK)
466 ret=(long)conn_state(b,data);
470 case BIO_C_SET_CONNECT:
476 if (data->param_hostname != NULL)
477 Free(data->param_hostname);
478 data->param_hostname=BUF_strdup(ptr);
482 if (data->param_port != NULL)
483 Free(data->param_port);
484 data->param_port=BUF_strdup(ptr);
502 case BIO_CTRL_GET_CLOSE:
505 case BIO_CTRL_SET_CLOSE:
506 b->shutdown=(int)num;
508 case BIO_CTRL_PENDING:
509 case BIO_CTRL_WPENDING:
516 if (data->param_port)
517 BIO_set_port(dbio,data->param_port);
518 if (data->param_hostname)
519 BIO_set_hostname(dbio,data->param_hostname);
520 BIO_set_nbio(dbio,data->nbio);
530 static int conn_puts(bp,str)
537 ret=conn_write(bp,str,n);
541 BIO *BIO_new_connect(str)
546 ret=BIO_new(BIO_s_connect());
547 if (ret == NULL) return(NULL);
548 if (BIO_set_hostname(ret,str))