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-rw-r--r--src/lib/libcrypto/bio/bss_conn.c648
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diff --git a/src/lib/libcrypto/bio/bss_conn.c b/src/lib/libcrypto/bio/bss_conn.c
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1/* crypto/bio/bss_conn.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
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)"
40 *
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
51 * SUCH DAMAGE.
52 *
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.]
57 */
58
59#ifndef NO_SOCK
60
61#include <stdio.h>
62#include <errno.h>
63#define USE_SOCKETS
64#include "cryptlib.h"
65#include "bio.h"
66
67/* BIOerr(BIO_F_WSASTARTUP,BIO_R_WSASTARTUP ); */
68
69#ifdef WIN16
70#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
71#else
72#define SOCKET_PROTOCOL IPPROTO_TCP
73#endif
74
75typedef struct bio_connect_st
76 {
77 int state;
78
79 char *param_hostname;
80 char *param_port;
81 int nbio;
82
83 unsigned char ip[4];
84 short port;
85
86 struct sockaddr_in them;
87
88 /* int socket; this will be kept in bio->num so that it is
89 * compatable with the bss_sock bio */
90 int error;
91
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)();
96 } BIO_CONNECT;
97
98#ifndef NOPROTO
99static int conn_write(BIO *h,char *buf,int num);
100static int conn_read(BIO *h,char *buf,int size);
101static int conn_puts(BIO *h,char *str);
102static long conn_ctrl(BIO *h,int cmd,long arg1,char *arg2);
103static int conn_new(BIO *h);
104static int conn_free(BIO *data);
105#else
106static int conn_write();
107static int conn_read();
108static int conn_puts();
109static long conn_ctrl();
110static int conn_new();
111static int conn_free();
112#endif
113
114#ifndef NOPROTO
115
116static int conn_state(BIO *b, BIO_CONNECT *c);
117static void conn_close_socket(BIO *data);
118BIO_CONNECT *BIO_CONNECT_new(void );
119void BIO_CONNECT_free(BIO_CONNECT *a);
120
121#else
122
123static int conn_state();
124static void conn_close_socket();
125BIO_CONNECT *BIO_CONNECT_new();
126void BIO_CONNECT_free();
127
128#endif
129
130static BIO_METHOD methods_connectp=
131 {
132 BIO_TYPE_CONNECT,
133 "socket connect",
134 conn_write,
135 conn_read,
136 conn_puts,
137 NULL, /* connect_gets, */
138 conn_ctrl,
139 conn_new,
140 conn_free,
141 };
142
143static int conn_state(b,c)
144BIO *b;
145BIO_CONNECT *c;
146 {
147 int ret= -1,i;
148 unsigned long l;
149 char *p,*q;
150 int (*cb)()=NULL;
151
152 if (c->info_callback != NULL)
153 cb=c->info_callback;
154
155 for (;;)
156 {
157 switch (c->state)
158 {
159 case BIO_CONN_S_BEFORE:
160 p=c->param_hostname;
161 if (p == NULL)
162 {
163 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_HOSTHNAME_SPECIFIED);
164 goto exit_loop;
165 }
166 for ( ; *p != '\0'; p++)
167 {
168 if ((*p == ':') || (*p == '/')) break;
169 }
170
171 i= *p;
172 if ((i == ':') || (i == '/'))
173 {
174
175 *(p++)='\0';
176 if (i == ':')
177 {
178 for (q=p; *q; q++)
179 if (*q == '/')
180 {
181 *q='\0';
182 break;
183 }
184 if (c->param_port != NULL)
185 Free(c->param_port);
186 c->param_port=BUF_strdup(p);
187 }
188 }
189
190 if (p == NULL)
191 {
192 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_PORT_SPECIFIED);
193 ERR_add_error_data(2,"host=",c->param_hostname);
194 goto exit_loop;
195 }
196 c->state=BIO_CONN_S_GET_IP;
197 break;
198
199 case BIO_CONN_S_GET_IP:
200 if (BIO_get_host_ip(c->param_hostname,&(c->ip[0])) <= 0)
201 goto exit_loop;
202 c->state=BIO_CONN_S_GET_PORT;
203 break;
204
205 case BIO_CONN_S_GET_PORT:
206 if (BIO_get_port(c->param_port,&c->port) <= 0)
207 goto exit_loop;
208 c->state=BIO_CONN_S_CREATE_SOCKET;
209 break;
210
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);
216 l=(unsigned long)
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;
223
224 ret=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
225 if (ret == INVALID_SOCKET)
226 {
227 SYSerr(SYS_F_SOCKET,get_last_socket_error());
228 ERR_add_error_data(4,"host=",c->param_hostname,
229 ":",c->param_port);
230 BIOerr(BIO_F_CONN_STATE,BIO_R_UNABLE_TO_CREATE_SOCKET);
231 goto exit_loop;
232 }
233 b->num=ret;
234 c->state=BIO_CONN_S_NBIO;
235 break;
236
237 case BIO_CONN_S_NBIO:
238#ifdef FIONBIO
239 if (c->nbio)
240 {
241 l=1;
242 ret=BIO_socket_ioctl(b->num,FIONBIO,&l);
243 if (ret < 0)
244 {
245 BIOerr(BIO_F_CONN_STATE,BIO_R_ERROR_SETTING_NBIO);
246 ERR_add_error_data(4,"host=",
247 c->param_hostname,
248 ":",c->param_port);
249 goto exit_loop;
250 }
251 }
252#endif
253 c->state=BIO_CONN_S_CONNECT;
254
255#ifdef SO_KEEPALIVE
256 i=1;
257 i=setsockopt(b->num,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
258 if (i < 0)
259 {
260 SYSerr(SYS_F_SOCKET,get_last_socket_error());
261 ERR_add_error_data(4,"host=",c->param_hostname,
262 ":",c->param_port);
263 BIOerr(BIO_F_CONN_STATE,BIO_R_KEEPALIVE);
264 goto exit_loop;
265 }
266#endif
267 break;
268
269 case BIO_CONN_S_CONNECT:
270 BIO_clear_retry_flags(b);
271 ret=connect(b->num,
272 (struct sockaddr *)&c->them,
273 sizeof(c->them));
274 b->retry_reason=0;
275 if (ret < 0)
276 {
277 if (BIO_sock_should_retry(ret))
278 {
279 BIO_set_retry_special(b);
280 c->state=BIO_CONN_S_BLOCKED_CONNECT;
281 b->retry_reason=BIO_RR_CONNECT;
282 }
283 else
284 {
285 SYSerr(SYS_F_CONNECT,get_last_socket_error());
286 ERR_add_error_data(4,"host=",
287 c->param_hostname,
288 ":",c->param_port);
289 BIOerr(BIO_F_CONN_STATE,BIO_R_CONNECT_ERROR);
290 }
291 goto exit_loop;
292 }
293 else
294 c->state=BIO_CONN_S_OK;
295 break;
296
297 case BIO_CONN_S_BLOCKED_CONNECT:
298 i=BIO_sock_error(b->num);
299 if (i)
300 {
301 BIO_clear_retry_flags(b);
302 SYSerr(SYS_F_CONNECT,i);
303 ERR_add_error_data(4,"host=",
304 c->param_hostname,
305 ":",c->param_port);
306 BIOerr(BIO_F_CONN_STATE,BIO_R_NBIO_CONNECT_ERROR);
307 ret=0;
308 goto exit_loop;
309 }
310 else
311 c->state=BIO_CONN_S_OK;
312 break;
313
314 case BIO_CONN_S_OK:
315 ret=1;
316 goto exit_loop;
317 default:
318 abort();
319 goto exit_loop;
320 }
321
322 if (cb != NULL)
323 {
324 if (!(ret=cb((BIO *)b,c->state,ret)))
325 goto end;
326 }
327 }
328
329 if (1)
330 {
331exit_loop:
332 if (cb != NULL)
333 ret=cb((BIO *)b,c->state,ret);
334 }
335end:
336 return(ret);
337 }
338
339BIO_CONNECT *BIO_CONNECT_new()
340 {
341 BIO_CONNECT *ret;
342
343 if ((ret=(BIO_CONNECT *)Malloc(sizeof(BIO_CONNECT))) == NULL)
344 return(NULL);
345 ret->state=BIO_CONN_S_BEFORE;
346 ret->param_hostname=NULL;
347 ret->param_port=NULL;
348 ret->info_callback=NULL;
349 ret->nbio=0;
350 ret->ip[0]=0;
351 ret->ip[1]=0;
352 ret->ip[2]=0;
353 ret->ip[3]=0;
354 ret->port=0;
355 memset((char *)&ret->them,0,sizeof(ret->them));
356 ret->error=0;
357 return(ret);
358 }
359
360void BIO_CONNECT_free(a)
361BIO_CONNECT *a;
362 {
363 if (a->param_hostname != NULL)
364 Free(a->param_hostname);
365 if (a->param_port != NULL)
366 Free(a->param_port);
367 Free(a);
368 }
369
370BIO_METHOD *BIO_s_connect()
371 {
372 return(&methods_connectp);
373 }
374
375static int conn_new(bi)
376BIO *bi;
377 {
378 bi->init=0;
379 bi->num=INVALID_SOCKET;
380 bi->flags=0;
381 if ((bi->ptr=(char *)BIO_CONNECT_new()) == NULL)
382 return(0);
383 else
384 return(1);
385 }
386
387static void conn_close_socket(bio)
388BIO *bio;
389 {
390 BIO_CONNECT *c;
391
392 c=(BIO_CONNECT *)bio->ptr;
393 if (bio->num != INVALID_SOCKET)
394 {
395 /* Only do a shutdown if things were established */
396 if (c->state == BIO_CONN_S_OK)
397 shutdown(bio->num,2);
398# ifdef WINDOWS
399 closesocket(bio->num);
400# else
401 close(bio->num);
402# endif
403 bio->num=INVALID_SOCKET;
404 }
405 }
406
407static int conn_free(a)
408BIO *a;
409 {
410 BIO_CONNECT *data;
411
412 if (a == NULL) return(0);
413 data=(BIO_CONNECT *)a->ptr;
414
415 if (a->shutdown)
416 {
417 conn_close_socket(a);
418 BIO_CONNECT_free(data);
419 a->ptr=NULL;
420 a->flags=0;
421 a->init=0;
422 }
423 return(1);
424 }
425
426static int conn_read(b,out,outl)
427BIO *b;
428char *out;
429int outl;
430 {
431 int ret=0;
432 BIO_CONNECT *data;
433
434 data=(BIO_CONNECT *)b->ptr;
435 if (data->state != BIO_CONN_S_OK)
436 {
437 ret=conn_state(b,data);
438 if (ret <= 0)
439 return(ret);
440 }
441
442 if (out != NULL)
443 {
444 clear_socket_error();
445#if defined(WINDOWS)
446 ret=recv(b->num,out,outl,0);
447#else
448 ret=read(b->num,out,outl);
449#endif
450 BIO_clear_retry_flags(b);
451 if (ret <= 0)
452 {
453 if (BIO_sock_should_retry(ret))
454 BIO_set_retry_read(b);
455 }
456 }
457 return(ret);
458 }
459
460static int conn_write(b,in,inl)
461BIO *b;
462char *in;
463int inl;
464 {
465 int ret;
466 BIO_CONNECT *data;
467
468 data=(BIO_CONNECT *)b->ptr;
469 if (data->state != BIO_CONN_S_OK)
470 {
471 ret=conn_state(b,data);
472 if (ret <= 0) return(ret);
473 }
474
475 clear_socket_error();
476#if defined(WINDOWS)
477 ret=send(b->num,in,inl,0);
478#else
479 ret=write(b->num,in,inl);
480#endif
481 BIO_clear_retry_flags(b);
482 if (ret <= 0)
483 {
484 if (BIO_sock_should_retry(ret))
485 BIO_set_retry_write(b);
486 }
487 return(ret);
488 }
489
490static long conn_ctrl(b,cmd,num,ptr)
491BIO *b;
492int cmd;
493long num;
494char *ptr;
495 {
496 BIO *dbio;
497 int *ip;
498 char **pptr;
499 long ret=1;
500 BIO_CONNECT *data;
501
502 data=(BIO_CONNECT *)b->ptr;
503
504 switch (cmd)
505 {
506 case BIO_CTRL_RESET:
507 ret=0;
508 data->state=BIO_CONN_S_BEFORE;
509 conn_close_socket(b);
510 b->flags=0;
511 break;
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);
516 else
517 ret=1;
518 break;
519 case BIO_C_GET_CONNECT:
520 if (ptr != NULL)
521 {
522 pptr=(char **)ptr;
523 if (num == 0)
524 {
525 *pptr=data->param_hostname;
526
527 }
528 else if (num == 1)
529 {
530 *pptr=data->param_port;
531 }
532 else if (num == 2)
533 {
534 *pptr= (char *)&(data->ip[0]);
535 }
536 else if (num == 3)
537 {
538 *((int *)ptr)=data->port;
539 }
540 if ((!b->init) || (ptr == NULL))
541 *pptr="not initalised";
542 ret=1;
543 }
544 break;
545 case BIO_C_SET_CONNECT:
546 if (ptr != NULL)
547 {
548 b->init=1;
549 if (num == 0)
550 {
551 if (data->param_hostname != NULL)
552 Free(data->param_hostname);
553 data->param_hostname=BUF_strdup(ptr);
554 }
555 else if (num == 1)
556 {
557 if (data->param_port != NULL)
558 Free(data->param_port);
559 data->param_port=BUF_strdup(ptr);
560 }
561 else if (num == 2)
562 memcpy(data->ip,ptr,4);
563 else if (num == 3)
564 data->port= *(int *)ptr;
565 }
566 break;
567 case BIO_C_SET_NBIO:
568 data->nbio=(int)num;
569 break;
570 case BIO_C_GET_FD:
571 if (b->init)
572 {
573 ip=(int *)ptr;
574 if (ip != NULL)
575 *ip=b->num;
576 ret=b->num;
577 }
578 else
579 ret= -1;
580 break;
581 case BIO_CTRL_GET_CLOSE:
582 ret=b->shutdown;
583 break;
584 case BIO_CTRL_SET_CLOSE:
585 b->shutdown=(int)num;
586 break;
587 case BIO_CTRL_PENDING:
588 case BIO_CTRL_WPENDING:
589 ret=0;
590 break;
591 case BIO_CTRL_FLUSH:
592 break;
593 case BIO_CTRL_DUP:
594 dbio=(BIO *)ptr;
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);
601 break;
602 case BIO_CTRL_SET_CALLBACK:
603 data->info_callback=(int (*)())ptr;
604 break;
605 case BIO_CTRL_GET_CALLBACK:
606 {
607 int (**fptr)();
608
609 fptr=(int (**)())ptr;
610 *fptr=data->info_callback;
611 }
612 break;
613 default:
614 ret=0;
615 break;
616 }
617 return(ret);
618 }
619
620static int conn_puts(bp,str)
621BIO *bp;
622char *str;
623 {
624 int n,ret;
625
626 n=strlen(str);
627 ret=conn_write(bp,str,n);
628 return(ret);
629 }
630
631BIO *BIO_new_connect(str)
632char *str;
633 {
634 BIO *ret;
635
636 ret=BIO_new(BIO_s_connect());
637 if (ret == NULL) return(NULL);
638 if (BIO_set_conn_hostname(ret,str))
639 return(ret);
640 else
641 {
642 BIO_free(ret);
643 return(NULL);
644 }
645 }
646
647#endif
648
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