1 /* crypto/bio/bss_conn.c */
2 /* Copyright (C) 1995-1998 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 */
92 /* called when the connection is initially made
93 * callback(BIO,state,ret); The callback should return
94 * 'ret'. state is for compatablity with the ssl info_callback */
95 int (*info_callback)();
99 static int conn_write(BIO *h,char *buf,int num);
100 static int conn_read(BIO *h,char *buf,int size);
101 static int conn_puts(BIO *h,char *str);
102 static long conn_ctrl(BIO *h,int cmd,long arg1,char *arg2);
103 static int conn_new(BIO *h);
104 static int conn_free(BIO *data);
106 static int conn_write();
107 static int conn_read();
108 static int conn_puts();
109 static long conn_ctrl();
110 static int conn_new();
111 static int conn_free();
116 static int conn_state(BIO *b, BIO_CONNECT *c);
117 static void conn_close_socket(BIO *data);
118 BIO_CONNECT *BIO_CONNECT_new(void );
119 void BIO_CONNECT_free(BIO_CONNECT *a);
123 static int conn_state();
124 static void conn_close_socket();
125 BIO_CONNECT *BIO_CONNECT_new();
126 void BIO_CONNECT_free();
130 static BIO_METHOD methods_connectp=
137 NULL, /* connect_gets, */
143 static int conn_state(b,c)
152 if (c->info_callback != NULL)
159 case BIO_CONN_S_BEFORE:
163 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_HOSTHNAME_SPECIFIED);
166 for ( ; *p != '\0'; p++)
168 if ((*p == ':') || (*p == '/')) break;
172 if ((i == ':') || (i == '/'))
184 if (c->param_port != NULL)
186 c->param_port=BUF_strdup(p);
192 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_PORT_SPECIFIED);
193 ERR_add_error_data(2,"host=",c->param_hostname);
196 c->state=BIO_CONN_S_GET_IP;
199 case BIO_CONN_S_GET_IP:
200 if (BIO_get_host_ip(c->param_hostname,&(c->ip[0])) <= 0)
202 c->state=BIO_CONN_S_GET_PORT;
205 case BIO_CONN_S_GET_PORT:
206 if (BIO_get_port(c->param_port,&c->port) <= 0)
208 c->state=BIO_CONN_S_CREATE_SOCKET;
211 case BIO_CONN_S_CREATE_SOCKET:
212 /* now setup address */
213 memset((char *)&c->them,0,sizeof(c->them));
214 c->them.sin_family=AF_INET;
215 c->them.sin_port=htons((unsigned short)c->port);
217 ((unsigned long)c->ip[0]<<24L)|
218 ((unsigned long)c->ip[1]<<16L)|
219 ((unsigned long)c->ip[2]<< 8L)|
220 ((unsigned long)c->ip[3]);
221 c->them.sin_addr.s_addr=htonl(l);
222 c->state=BIO_CONN_S_CREATE_SOCKET;
224 ret=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
225 if (ret == INVALID_SOCKET)
227 SYSerr(SYS_F_SOCKET,get_last_socket_error());
228 ERR_add_error_data(4,"host=",c->param_hostname,
230 BIOerr(BIO_F_CONN_STATE,BIO_R_UNABLE_TO_CREATE_SOCKET);
234 c->state=BIO_CONN_S_NBIO;
237 case BIO_CONN_S_NBIO:
242 ret=BIO_socket_ioctl(b->num,FIONBIO,&l);
245 BIOerr(BIO_F_CONN_STATE,BIO_R_ERROR_SETTING_NBIO);
246 ERR_add_error_data(4,"host=",
253 c->state=BIO_CONN_S_CONNECT;
257 i=setsockopt(b->num,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
260 SYSerr(SYS_F_SOCKET,get_last_socket_error());
261 ERR_add_error_data(4,"host=",c->param_hostname,
263 BIOerr(BIO_F_CONN_STATE,BIO_R_KEEPALIVE);
269 case BIO_CONN_S_CONNECT:
270 BIO_clear_retry_flags(b);
272 (struct sockaddr *)&c->them,
277 if (BIO_sock_should_retry(ret))
279 BIO_set_retry_special(b);
280 c->state=BIO_CONN_S_BLOCKED_CONNECT;
281 b->retry_reason=BIO_RR_CONNECT;
285 SYSerr(SYS_F_CONNECT,get_last_socket_error());
286 ERR_add_error_data(4,"host=",
289 BIOerr(BIO_F_CONN_STATE,BIO_R_CONNECT_ERROR);
294 c->state=BIO_CONN_S_OK;
297 case BIO_CONN_S_BLOCKED_CONNECT:
298 i=BIO_sock_error(b->num);
301 BIO_clear_retry_flags(b);
302 SYSerr(SYS_F_CONNECT,i);
303 ERR_add_error_data(4,"host=",
306 BIOerr(BIO_F_CONN_STATE,BIO_R_NBIO_CONNECT_ERROR);
311 c->state=BIO_CONN_S_OK;
324 if (!(ret=cb((BIO *)b,c->state,ret)))
333 ret=cb((BIO *)b,c->state,ret);
339 BIO_CONNECT *BIO_CONNECT_new()
343 if ((ret=(BIO_CONNECT *)Malloc(sizeof(BIO_CONNECT))) == NULL)
345 ret->state=BIO_CONN_S_BEFORE;
346 ret->param_hostname=NULL;
347 ret->param_port=NULL;
348 ret->info_callback=NULL;
355 memset((char *)&ret->them,0,sizeof(ret->them));
360 void BIO_CONNECT_free(a)
363 if (a->param_hostname != NULL)
364 Free(a->param_hostname);
365 if (a->param_port != NULL)
370 BIO_METHOD *BIO_s_connect()
372 return(&methods_connectp);
375 static int conn_new(bi)
379 bi->num=INVALID_SOCKET;
381 if ((bi->ptr=(char *)BIO_CONNECT_new()) == NULL)
387 static void conn_close_socket(bio)
392 c=(BIO_CONNECT *)bio->ptr;
393 if (bio->num != INVALID_SOCKET)
395 /* Only do a shutdown if things were established */
396 if (c->state == BIO_CONN_S_OK)
397 shutdown(bio->num,2);
399 closesocket(bio->num);
403 bio->num=INVALID_SOCKET;
407 static int conn_free(a)
412 if (a == NULL) return(0);
413 data=(BIO_CONNECT *)a->ptr;
417 conn_close_socket(a);
418 BIO_CONNECT_free(data);
426 static int conn_read(b,out,outl)
434 data=(BIO_CONNECT *)b->ptr;
435 if (data->state != BIO_CONN_S_OK)
437 ret=conn_state(b,data);
444 clear_socket_error();
446 ret=recv(b->num,out,outl,0);
448 ret=read(b->num,out,outl);
450 BIO_clear_retry_flags(b);
453 if (BIO_sock_should_retry(ret))
454 BIO_set_retry_read(b);
460 static int conn_write(b,in,inl)
468 data=(BIO_CONNECT *)b->ptr;
469 if (data->state != BIO_CONN_S_OK)
471 ret=conn_state(b,data);
472 if (ret <= 0) return(ret);
475 clear_socket_error();
477 ret=send(b->num,in,inl,0);
479 ret=write(b->num,in,inl);
481 BIO_clear_retry_flags(b);
484 if (BIO_sock_should_retry(ret))
485 BIO_set_retry_write(b);
490 static long conn_ctrl(b,cmd,num,ptr)
502 data=(BIO_CONNECT *)b->ptr;
508 data->state=BIO_CONN_S_BEFORE;
509 conn_close_socket(b);
512 case BIO_C_DO_STATE_MACHINE:
513 /* use this one to start the connection */
514 if (!data->state != BIO_CONN_S_OK)
515 ret=(long)conn_state(b,data);
519 case BIO_C_GET_CONNECT:
525 *pptr=data->param_hostname;
530 *pptr=data->param_port;
534 *pptr= (char *)&(data->ip[0]);
538 *((int *)ptr)=data->port;
540 if ((!b->init) || (ptr == NULL))
541 *pptr="not initalised";
545 case BIO_C_SET_CONNECT:
551 if (data->param_hostname != NULL)
552 Free(data->param_hostname);
553 data->param_hostname=BUF_strdup(ptr);
557 if (data->param_port != NULL)
558 Free(data->param_port);
559 data->param_port=BUF_strdup(ptr);
562 memcpy(data->ip,ptr,4);
564 data->port= *(int *)ptr;
581 case BIO_CTRL_GET_CLOSE:
584 case BIO_CTRL_SET_CLOSE:
585 b->shutdown=(int)num;
587 case BIO_CTRL_PENDING:
588 case BIO_CTRL_WPENDING:
595 if (data->param_port)
596 BIO_set_conn_port(dbio,data->param_port);
597 if (data->param_hostname)
598 BIO_set_conn_hostname(dbio,data->param_hostname);
599 BIO_set_nbio(dbio,data->nbio);
600 BIO_set_info_callback(dbio,data->info_callback);
602 case BIO_CTRL_SET_CALLBACK:
603 data->info_callback=(int (*)())ptr;
605 case BIO_CTRL_GET_CALLBACK:
609 fptr=(int (**)())ptr;
610 *fptr=data->info_callback;
620 static int conn_puts(bp,str)
627 ret=conn_write(bp,str,n);
631 BIO *BIO_new_connect(str)
636 ret=BIO_new(BIO_s_connect());
637 if (ret == NULL) return(NULL);
638 if (BIO_set_conn_hostname(ret,str))