1 /* crypto/bio/bss_acpt.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 #if (defined(VMS) && __VMS_VER < 70000000)
74 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
78 typedef struct bio_accept_st
88 /* If 0, it means normal, if 1, do a connect on bind failure,
89 * and if there is no-one listening, bind with SO_REUSEADDR.
90 * If 2, always use SO_REUSEADDR. */
95 static int acpt_write(BIO *h,char *buf,int num);
96 static int acpt_read(BIO *h,char *buf,int size);
97 static int acpt_puts(BIO *h,char *str);
98 static long acpt_ctrl(BIO *h,int cmd,long arg1,char *arg2);
99 static int acpt_new(BIO *h);
100 static int acpt_free(BIO *data);
101 static int acpt_state(BIO *b, BIO_ACCEPT *c);
102 static void acpt_close_socket(BIO *data);
103 BIO_ACCEPT *BIO_ACCEPT_new(void );
104 void BIO_ACCEPT_free(BIO_ACCEPT *a);
106 #define ACPT_S_BEFORE 1
107 #define ACPT_S_GET_ACCEPT_SOCKET 2
110 static BIO_METHOD methods_acceptp=
117 NULL, /* connect_gets, */
124 BIO_METHOD *BIO_s_accept(void)
126 return(&methods_acceptp);
129 static int acpt_new(BIO *bi)
134 bi->num=INVALID_SOCKET;
136 if ((ba=BIO_ACCEPT_new()) == NULL)
139 ba->state=ACPT_S_BEFORE;
144 BIO_ACCEPT *BIO_ACCEPT_new(void)
148 if ((ret=(BIO_ACCEPT *)Malloc(sizeof(BIO_ACCEPT))) == NULL)
151 memset(ret,0,sizeof(BIO_ACCEPT));
152 ret->accept_sock=INVALID_SOCKET;
153 ret->bind_mode=BIO_BIND_NORMAL;
157 void BIO_ACCEPT_free(BIO_ACCEPT *a)
162 if (a->param_addr != NULL) Free(a->param_addr);
163 if (a->addr != NULL) Free(a->addr);
164 if (a->bio_chain != NULL) BIO_free(a->bio_chain);
168 static void acpt_close_socket(BIO *bio)
172 c=(BIO_ACCEPT *)bio->ptr;
173 if (c->accept_sock != INVALID_SOCKET)
175 shutdown(c->accept_sock,2);
176 closesocket(c->accept_sock);
177 c->accept_sock=INVALID_SOCKET;
178 bio->num=INVALID_SOCKET;
182 static int acpt_free(BIO *a)
186 if (a == NULL) return(0);
187 data=(BIO_ACCEPT *)a->ptr;
191 acpt_close_socket(a);
192 BIO_ACCEPT_free(data);
200 static int acpt_state(BIO *b, BIO_ACCEPT *c)
210 if (c->param_addr == NULL)
212 BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
215 s=BIO_get_accept_socket(c->param_addr,c->bind_mode);
216 if (s == INVALID_SOCKET)
221 if (!BIO_socket_nbio(s,1))
224 BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
230 c->state=ACPT_S_GET_ACCEPT_SOCKET;
233 case ACPT_S_GET_ACCEPT_SOCKET:
234 if (b->next_bio != NULL)
239 i=BIO_accept(c->accept_sock,&(c->addr));
240 if (i < 0) return(i);
241 bio=BIO_new_socket(i,BIO_CLOSE);
242 if (bio == NULL) goto err;
244 BIO_set_callback(bio,BIO_get_callback(b));
245 BIO_set_callback_arg(bio,BIO_get_callback_arg(b));
249 if (!BIO_socket_nbio(i,1))
251 BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
256 /* If the accept BIO has an bio_chain, we dup it and
257 * put the new socket at the end. */
258 if (c->bio_chain != NULL)
260 if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
262 if (!BIO_push(dbio,bio)) goto err;
265 if (BIO_push(b,bio) == NULL) goto err;
277 if (b->next_bio == NULL)
279 c->state=ACPT_S_GET_ACCEPT_SOCKET;
291 static int acpt_read(BIO *b, char *out, int outl)
296 BIO_clear_retry_flags(b);
297 data=(BIO_ACCEPT *)b->ptr;
299 while (b->next_bio == NULL)
301 ret=acpt_state(b,data);
302 if (ret <= 0) return(ret);
305 ret=BIO_read(b->next_bio,out,outl);
306 BIO_copy_next_retry(b);
310 static int acpt_write(BIO *b, char *in, int inl)
315 BIO_clear_retry_flags(b);
316 data=(BIO_ACCEPT *)b->ptr;
318 while (b->next_bio == NULL)
320 ret=acpt_state(b,data);
321 if (ret <= 0) return(ret);
324 ret=BIO_write(b->next_bio,in,inl);
325 BIO_copy_next_retry(b);
329 static long acpt_ctrl(BIO *b, int cmd, long num, char *ptr)
337 data=(BIO_ACCEPT *)b->ptr;
343 data->state=ACPT_S_BEFORE;
344 acpt_close_socket(b);
347 case BIO_C_DO_STATE_MACHINE:
348 /* use this one to start the connection */
349 ret=(long)acpt_state(b,data);
351 case BIO_C_SET_ACCEPT:
357 if (data->param_addr != NULL)
358 Free(data->param_addr);
359 data->param_addr=BUF_strdup(ptr);
363 data->accept_nbio=(ptr != NULL);
367 if (data->bio_chain != NULL)
368 BIO_free(data->bio_chain);
369 data->bio_chain=(BIO *)ptr;
378 b->num= *((int *)ptr);
379 data->accept_sock=b->num;
380 data->state=ACPT_S_GET_ACCEPT_SOCKET;
381 b->shutdown=(int)num;
389 *ip=data->accept_sock;
390 ret=data->accept_sock;
395 case BIO_C_GET_ACCEPT:
401 *pp=data->param_addr;
409 case BIO_CTRL_GET_CLOSE:
412 case BIO_CTRL_SET_CLOSE:
413 b->shutdown=(int)num;
415 case BIO_CTRL_PENDING:
416 case BIO_CTRL_WPENDING:
421 case BIO_C_SET_BIND_MODE:
422 data->bind_mode=(int)num;
424 case BIO_C_GET_BIND_MODE:
425 ret=(long)data->bind_mode;
429 /* if (data->param_port) EAY EAY
430 BIO_set_port(dbio,data->param_port);
431 if (data->param_hostname)
432 BIO_set_hostname(dbio,data->param_hostname);
433 BIO_set_nbio(dbio,data->nbio); */
443 static int acpt_puts(BIO *bp, char *str)
448 ret=acpt_write(bp,str,n);
452 BIO *BIO_new_accept(char *str)
456 ret=BIO_new(BIO_s_accept());
457 if (ret == NULL) return(NULL);
458 if (BIO_set_accept_port(ret,str))