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 */
91 /* called when the connection is initially made
92 * callback(BIO,state,ret); The callback should return
93 * 'ret'. state is for compatablity with the ssl info_callback */
94 int (*info_callback)();
98 static int conn_write(BIO *h,char *buf,int num);
99 static int conn_read(BIO *h,char *buf,int size);
100 static int conn_puts(BIO *h,char *str);
101 static long conn_ctrl(BIO *h,int cmd,long arg1,char *arg2);
102 static int conn_new(BIO *h);
103 static int conn_free(BIO *data);
105 static int conn_write();
106 static int conn_read();
107 static int conn_puts();
108 static long conn_ctrl();
109 static int conn_new();
110 static int conn_free();
115 static int conn_state(BIO *b, BIO_CONNECT *c);
116 static void conn_close_socket(BIO *data);
117 BIO_CONNECT *BIO_CONNECT_new(void );
118 void BIO_CONNECT_free(BIO_CONNECT *a);
122 static int conn_state();
123 static void conn_close_socket();
124 BIO_CONNECT *BIO_CONNECT_new();
125 void BIO_CONNECT_free();
129 static BIO_METHOD methods_connectp=
136 NULL, /* connect_gets, */
142 static int conn_state(BIO *b, BIO_CONNECT *c)
149 if (c->info_callback != NULL)
156 case BIO_CONN_S_BEFORE:
160 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_HOSTNAME_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);
187 if (c->param_port == NULL)
189 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_PORT_SPECIFIED);
190 ERR_add_error_data(2,"host=",c->param_hostname);
193 c->state=BIO_CONN_S_GET_IP;
196 case BIO_CONN_S_GET_IP:
197 if (BIO_get_host_ip(c->param_hostname,&(c->ip[0])) <= 0)
199 c->state=BIO_CONN_S_GET_PORT;
202 case BIO_CONN_S_GET_PORT:
203 if (c->param_port == NULL)
208 else if (BIO_get_port(c->param_port,&c->port) <= 0)
210 c->state=BIO_CONN_S_CREATE_SOCKET;
213 case BIO_CONN_S_CREATE_SOCKET:
214 /* now setup address */
215 memset((char *)&c->them,0,sizeof(c->them));
216 c->them.sin_family=AF_INET;
217 c->them.sin_port=htons((unsigned short)c->port);
219 ((unsigned long)c->ip[0]<<24L)|
220 ((unsigned long)c->ip[1]<<16L)|
221 ((unsigned long)c->ip[2]<< 8L)|
222 ((unsigned long)c->ip[3]);
223 c->them.sin_addr.s_addr=htonl(l);
224 c->state=BIO_CONN_S_CREATE_SOCKET;
226 ret=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
227 if (ret == INVALID_SOCKET)
229 SYSerr(SYS_F_SOCKET,get_last_socket_error());
230 ERR_add_error_data(4,"host=",c->param_hostname,
232 BIOerr(BIO_F_CONN_STATE,BIO_R_UNABLE_TO_CREATE_SOCKET);
236 c->state=BIO_CONN_S_NBIO;
239 case BIO_CONN_S_NBIO:
242 if (!BIO_socket_nbio(b->num,1))
244 BIOerr(BIO_F_CONN_STATE,BIO_R_ERROR_SETTING_NBIO);
245 ERR_add_error_data(4,"host=",
251 c->state=BIO_CONN_S_CONNECT;
255 i=setsockopt(b->num,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
258 SYSerr(SYS_F_SOCKET,get_last_socket_error());
259 ERR_add_error_data(4,"host=",c->param_hostname,
261 BIOerr(BIO_F_CONN_STATE,BIO_R_KEEPALIVE);
267 case BIO_CONN_S_CONNECT:
268 BIO_clear_retry_flags(b);
270 (struct sockaddr *)&c->them,
275 if (BIO_sock_should_retry(ret))
277 BIO_set_retry_special(b);
278 c->state=BIO_CONN_S_BLOCKED_CONNECT;
279 b->retry_reason=BIO_RR_CONNECT;
283 SYSerr(SYS_F_CONNECT,get_last_socket_error());
284 ERR_add_error_data(4,"host=",
287 BIOerr(BIO_F_CONN_STATE,BIO_R_CONNECT_ERROR);
292 c->state=BIO_CONN_S_OK;
295 case BIO_CONN_S_BLOCKED_CONNECT:
296 i=BIO_sock_error(b->num);
299 BIO_clear_retry_flags(b);
300 SYSerr(SYS_F_CONNECT,i);
301 ERR_add_error_data(4,"host=",
304 BIOerr(BIO_F_CONN_STATE,BIO_R_NBIO_CONNECT_ERROR);
309 c->state=BIO_CONN_S_OK;
322 if (!(ret=cb((BIO *)b,c->state,ret)))
327 /* Loop does not exit */
330 ret=cb((BIO *)b,c->state,ret);
335 BIO_CONNECT *BIO_CONNECT_new(void)
339 if ((ret=(BIO_CONNECT *)Malloc(sizeof(BIO_CONNECT))) == NULL)
341 ret->state=BIO_CONN_S_BEFORE;
342 ret->param_hostname=NULL;
343 ret->param_port=NULL;
344 ret->info_callback=NULL;
351 memset((char *)&ret->them,0,sizeof(ret->them));
355 void BIO_CONNECT_free(BIO_CONNECT *a)
360 if (a->param_hostname != NULL)
361 Free(a->param_hostname);
362 if (a->param_port != NULL)
367 BIO_METHOD *BIO_s_connect(void)
369 return(&methods_connectp);
372 static int conn_new(BIO *bi)
375 bi->num=INVALID_SOCKET;
377 if ((bi->ptr=(char *)BIO_CONNECT_new()) == NULL)
383 static void conn_close_socket(BIO *bio)
387 c=(BIO_CONNECT *)bio->ptr;
388 if (bio->num != INVALID_SOCKET)
390 /* Only do a shutdown if things were established */
391 if (c->state == BIO_CONN_S_OK)
392 shutdown(bio->num,2);
393 closesocket(bio->num);
394 bio->num=INVALID_SOCKET;
398 static int conn_free(BIO *a)
402 if (a == NULL) return(0);
403 data=(BIO_CONNECT *)a->ptr;
407 conn_close_socket(a);
408 BIO_CONNECT_free(data);
416 static int conn_read(BIO *b, char *out, int outl)
421 data=(BIO_CONNECT *)b->ptr;
422 if (data->state != BIO_CONN_S_OK)
424 ret=conn_state(b,data);
431 clear_socket_error();
432 ret=readsocket(b->num,out,outl);
433 BIO_clear_retry_flags(b);
436 if (BIO_sock_should_retry(ret))
437 BIO_set_retry_read(b);
443 static int conn_write(BIO *b, char *in, int inl)
448 data=(BIO_CONNECT *)b->ptr;
449 if (data->state != BIO_CONN_S_OK)
451 ret=conn_state(b,data);
452 if (ret <= 0) return(ret);
455 clear_socket_error();
456 ret=writesocket(b->num,in,inl);
457 BIO_clear_retry_flags(b);
460 if (BIO_sock_should_retry(ret))
461 BIO_set_retry_write(b);
466 static long conn_ctrl(BIO *b, int cmd, long num, char *ptr)
474 data=(BIO_CONNECT *)b->ptr;
480 data->state=BIO_CONN_S_BEFORE;
481 conn_close_socket(b);
484 case BIO_C_DO_STATE_MACHINE:
485 /* use this one to start the connection */
486 if (!data->state != BIO_CONN_S_OK)
487 ret=(long)conn_state(b,data);
491 case BIO_C_GET_CONNECT:
494 pptr=(const char **)ptr;
497 *pptr=data->param_hostname;
502 *pptr=data->param_port;
506 *pptr= (char *)&(data->ip[0]);
510 *((int *)ptr)=data->port;
512 if ((!b->init) || (ptr == NULL))
513 *pptr="not initalised";
517 case BIO_C_SET_CONNECT:
523 if (data->param_hostname != NULL)
524 Free(data->param_hostname);
525 data->param_hostname=BUF_strdup(ptr);
529 if (data->param_port != NULL)
530 Free(data->param_port);
531 data->param_port=BUF_strdup(ptr);
537 sprintf(buf,"%d.%d.%d.%d",
538 ptr[0],ptr[1],ptr[2],ptr[3]);
539 if (data->param_hostname != NULL)
540 Free(data->param_hostname);
541 data->param_hostname=BUF_strdup(buf);
542 memcpy(&(data->ip[0]),ptr,4);
548 sprintf(buf,"%d",*(int *)ptr);
549 if (data->param_port != NULL)
550 Free(data->param_port);
551 data->param_port=BUF_strdup(buf);
552 data->port= *(int *)ptr;
570 case BIO_CTRL_GET_CLOSE:
573 case BIO_CTRL_SET_CLOSE:
574 b->shutdown=(int)num;
576 case BIO_CTRL_PENDING:
577 case BIO_CTRL_WPENDING:
584 if (data->param_port)
585 BIO_set_conn_port(dbio,data->param_port);
586 if (data->param_hostname)
587 BIO_set_conn_hostname(dbio,data->param_hostname);
588 BIO_set_nbio(dbio,data->nbio);
589 BIO_set_info_callback(dbio,data->info_callback);
591 case BIO_CTRL_SET_CALLBACK:
592 data->info_callback=(int (*)())ptr;
594 case BIO_CTRL_GET_CALLBACK:
598 fptr=(int (**)())ptr;
599 *fptr=data->info_callback;
609 static int conn_puts(BIO *bp, char *str)
614 ret=conn_write(bp,str,n);
618 BIO *BIO_new_connect(char *str)
622 ret=BIO_new(BIO_s_connect());
623 if (ret == NULL) return(NULL);
624 if (BIO_set_conn_hostname(ret,str))