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.]
65 #include <openssl/bio.h>
68 #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
70 #define SOCKET_PROTOCOL IPPROTO_TCP
73 typedef struct bio_connect_st
84 struct sockaddr_in them;
86 /* int socket; this will be kept in bio->num so that it is
87 * compatable with the bss_sock bio */
89 /* called when the connection is initially made
90 * callback(BIO,state,ret); The callback should return
91 * 'ret'. state is for compatablity with the ssl info_callback */
92 int (*info_callback)();
95 static int conn_write(BIO *h,char *buf,int num);
96 static int conn_read(BIO *h,char *buf,int size);
97 static int conn_puts(BIO *h,char *str);
98 static long conn_ctrl(BIO *h,int cmd,long arg1,char *arg2);
99 static int conn_new(BIO *h);
100 static int conn_free(BIO *data);
102 static int conn_state(BIO *b, BIO_CONNECT *c);
103 static void conn_close_socket(BIO *data);
104 BIO_CONNECT *BIO_CONNECT_new(void );
105 void BIO_CONNECT_free(BIO_CONNECT *a);
107 static BIO_METHOD methods_connectp=
114 NULL, /* connect_gets, */
120 static int conn_state(BIO *b, BIO_CONNECT *c)
127 if (c->info_callback != NULL)
134 case BIO_CONN_S_BEFORE:
138 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_HOSTNAME_SPECIFIED);
141 for ( ; *p != '\0'; p++)
143 if ((*p == ':') || (*p == '/')) break;
147 if ((i == ':') || (i == '/'))
159 if (c->param_port != NULL)
161 c->param_port=BUF_strdup(p);
165 if (c->param_port == NULL)
167 BIOerr(BIO_F_CONN_STATE,BIO_R_NO_PORT_SPECIFIED);
168 ERR_add_error_data(2,"host=",c->param_hostname);
171 c->state=BIO_CONN_S_GET_IP;
174 case BIO_CONN_S_GET_IP:
175 if (BIO_get_host_ip(c->param_hostname,&(c->ip[0])) <= 0)
177 c->state=BIO_CONN_S_GET_PORT;
180 case BIO_CONN_S_GET_PORT:
181 if (c->param_port == NULL)
186 else if (BIO_get_port(c->param_port,&c->port) <= 0)
188 c->state=BIO_CONN_S_CREATE_SOCKET;
191 case BIO_CONN_S_CREATE_SOCKET:
192 /* now setup address */
193 memset((char *)&c->them,0,sizeof(c->them));
194 c->them.sin_family=AF_INET;
195 c->them.sin_port=htons((unsigned short)c->port);
197 ((unsigned long)c->ip[0]<<24L)|
198 ((unsigned long)c->ip[1]<<16L)|
199 ((unsigned long)c->ip[2]<< 8L)|
200 ((unsigned long)c->ip[3]);
201 c->them.sin_addr.s_addr=htonl(l);
202 c->state=BIO_CONN_S_CREATE_SOCKET;
204 ret=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
205 if (ret == INVALID_SOCKET)
207 SYSerr(SYS_F_SOCKET,get_last_socket_error());
208 ERR_add_error_data(4,"host=",c->param_hostname,
210 BIOerr(BIO_F_CONN_STATE,BIO_R_UNABLE_TO_CREATE_SOCKET);
214 c->state=BIO_CONN_S_NBIO;
217 case BIO_CONN_S_NBIO:
220 if (!BIO_socket_nbio(b->num,1))
222 BIOerr(BIO_F_CONN_STATE,BIO_R_ERROR_SETTING_NBIO);
223 ERR_add_error_data(4,"host=",
229 c->state=BIO_CONN_S_CONNECT;
233 i=setsockopt(b->num,SOL_SOCKET,SO_KEEPALIVE,(char *)&i,sizeof(i));
236 SYSerr(SYS_F_SOCKET,get_last_socket_error());
237 ERR_add_error_data(4,"host=",c->param_hostname,
239 BIOerr(BIO_F_CONN_STATE,BIO_R_KEEPALIVE);
245 case BIO_CONN_S_CONNECT:
246 BIO_clear_retry_flags(b);
248 (struct sockaddr *)&c->them,
253 if (BIO_sock_should_retry(ret))
255 BIO_set_retry_special(b);
256 c->state=BIO_CONN_S_BLOCKED_CONNECT;
257 b->retry_reason=BIO_RR_CONNECT;
261 SYSerr(SYS_F_CONNECT,get_last_socket_error());
262 ERR_add_error_data(4,"host=",
265 BIOerr(BIO_F_CONN_STATE,BIO_R_CONNECT_ERROR);
270 c->state=BIO_CONN_S_OK;
273 case BIO_CONN_S_BLOCKED_CONNECT:
274 i=BIO_sock_error(b->num);
277 BIO_clear_retry_flags(b);
278 SYSerr(SYS_F_CONNECT,i);
279 ERR_add_error_data(4,"host=",
282 BIOerr(BIO_F_CONN_STATE,BIO_R_NBIO_CONNECT_ERROR);
287 c->state=BIO_CONN_S_OK;
300 if (!(ret=cb((BIO *)b,c->state,ret)))
305 /* Loop does not exit */
308 ret=cb((BIO *)b,c->state,ret);
313 BIO_CONNECT *BIO_CONNECT_new(void)
317 if ((ret=(BIO_CONNECT *)Malloc(sizeof(BIO_CONNECT))) == NULL)
319 ret->state=BIO_CONN_S_BEFORE;
320 ret->param_hostname=NULL;
321 ret->param_port=NULL;
322 ret->info_callback=NULL;
329 memset((char *)&ret->them,0,sizeof(ret->them));
333 void BIO_CONNECT_free(BIO_CONNECT *a)
338 if (a->param_hostname != NULL)
339 Free(a->param_hostname);
340 if (a->param_port != NULL)
345 BIO_METHOD *BIO_s_connect(void)
347 return(&methods_connectp);
350 static int conn_new(BIO *bi)
353 bi->num=INVALID_SOCKET;
355 if ((bi->ptr=(char *)BIO_CONNECT_new()) == NULL)
361 static void conn_close_socket(BIO *bio)
365 c=(BIO_CONNECT *)bio->ptr;
366 if (bio->num != INVALID_SOCKET)
368 /* Only do a shutdown if things were established */
369 if (c->state == BIO_CONN_S_OK)
370 shutdown(bio->num,2);
371 closesocket(bio->num);
372 bio->num=INVALID_SOCKET;
376 static int conn_free(BIO *a)
380 if (a == NULL) return(0);
381 data=(BIO_CONNECT *)a->ptr;
385 conn_close_socket(a);
386 BIO_CONNECT_free(data);
394 static int conn_read(BIO *b, char *out, int outl)
399 data=(BIO_CONNECT *)b->ptr;
400 if (data->state != BIO_CONN_S_OK)
402 ret=conn_state(b,data);
409 clear_socket_error();
410 ret=readsocket(b->num,out,outl);
411 BIO_clear_retry_flags(b);
414 if (BIO_sock_should_retry(ret))
415 BIO_set_retry_read(b);
421 static int conn_write(BIO *b, char *in, int inl)
426 data=(BIO_CONNECT *)b->ptr;
427 if (data->state != BIO_CONN_S_OK)
429 ret=conn_state(b,data);
430 if (ret <= 0) return(ret);
433 clear_socket_error();
434 ret=writesocket(b->num,in,inl);
435 BIO_clear_retry_flags(b);
438 if (BIO_sock_should_retry(ret))
439 BIO_set_retry_write(b);
444 static long conn_ctrl(BIO *b, int cmd, long num, char *ptr)
452 data=(BIO_CONNECT *)b->ptr;
458 data->state=BIO_CONN_S_BEFORE;
459 conn_close_socket(b);
462 case BIO_C_DO_STATE_MACHINE:
463 /* use this one to start the connection */
464 if (!data->state != BIO_CONN_S_OK)
465 ret=(long)conn_state(b,data);
469 case BIO_C_GET_CONNECT:
472 pptr=(const char **)ptr;
475 *pptr=data->param_hostname;
480 *pptr=data->param_port;
484 *pptr= (char *)&(data->ip[0]);
488 *((int *)ptr)=data->port;
490 if ((!b->init) || (ptr == NULL))
491 *pptr="not initalised";
495 case BIO_C_SET_CONNECT:
501 if (data->param_hostname != NULL)
502 Free(data->param_hostname);
503 data->param_hostname=BUF_strdup(ptr);
507 if (data->param_port != NULL)
508 Free(data->param_port);
509 data->param_port=BUF_strdup(ptr);
515 sprintf(buf,"%d.%d.%d.%d",
516 ptr[0],ptr[1],ptr[2],ptr[3]);
517 if (data->param_hostname != NULL)
518 Free(data->param_hostname);
519 data->param_hostname=BUF_strdup(buf);
520 memcpy(&(data->ip[0]),ptr,4);
526 sprintf(buf,"%d",*(int *)ptr);
527 if (data->param_port != NULL)
528 Free(data->param_port);
529 data->param_port=BUF_strdup(buf);
530 data->port= *(int *)ptr;
548 case BIO_CTRL_GET_CLOSE:
551 case BIO_CTRL_SET_CLOSE:
552 b->shutdown=(int)num;
554 case BIO_CTRL_PENDING:
555 case BIO_CTRL_WPENDING:
562 if (data->param_port)
563 BIO_set_conn_port(dbio,data->param_port);
564 if (data->param_hostname)
565 BIO_set_conn_hostname(dbio,data->param_hostname);
566 BIO_set_nbio(dbio,data->nbio);
567 BIO_set_info_callback(dbio,data->info_callback);
569 case BIO_CTRL_SET_CALLBACK:
570 data->info_callback=(int (*)())ptr;
572 case BIO_CTRL_GET_CALLBACK:
576 fptr=(int (**)())ptr;
577 *fptr=data->info_callback;
587 static int conn_puts(BIO *bp, char *str)
592 ret=conn_write(bp,str,n);
596 BIO *BIO_new_connect(char *str)
600 ret=BIO_new(BIO_s_connect());
601 if (ret == NULL) return(NULL);
602 if (BIO_set_conn_hostname(ret,str))