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, */
123 BIO_METHOD *BIO_s_accept(void)
125 return(&methods_acceptp);
128 static int acpt_new(BIO *bi)
133 bi->num=INVALID_SOCKET;
135 if ((ba=BIO_ACCEPT_new()) == NULL)
138 ba->state=ACPT_S_BEFORE;
143 BIO_ACCEPT *BIO_ACCEPT_new(void)
147 if ((ret=(BIO_ACCEPT *)Malloc(sizeof(BIO_ACCEPT))) == NULL)
150 memset(ret,0,sizeof(BIO_ACCEPT));
151 ret->accept_sock=INVALID_SOCKET;
152 ret->bind_mode=BIO_BIND_NORMAL;
156 void BIO_ACCEPT_free(BIO_ACCEPT *a)
161 if (a->param_addr != NULL) Free(a->param_addr);
162 if (a->addr != NULL) Free(a->addr);
163 if (a->bio_chain != NULL) BIO_free(a->bio_chain);
167 static void acpt_close_socket(BIO *bio)
171 c=(BIO_ACCEPT *)bio->ptr;
172 if (c->accept_sock != INVALID_SOCKET)
174 shutdown(c->accept_sock,2);
175 closesocket(c->accept_sock);
176 c->accept_sock=INVALID_SOCKET;
177 bio->num=INVALID_SOCKET;
181 static int acpt_free(BIO *a)
185 if (a == NULL) return(0);
186 data=(BIO_ACCEPT *)a->ptr;
190 acpt_close_socket(a);
191 BIO_ACCEPT_free(data);
199 static int acpt_state(BIO *b, BIO_ACCEPT *c)
209 if (c->param_addr == NULL)
211 BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
214 s=BIO_get_accept_socket(c->param_addr,c->bind_mode);
215 if (s == INVALID_SOCKET)
220 if (!BIO_socket_nbio(s,1))
223 BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
229 c->state=ACPT_S_GET_ACCEPT_SOCKET;
232 case ACPT_S_GET_ACCEPT_SOCKET:
233 if (b->next_bio != NULL)
238 i=BIO_accept(c->accept_sock,&(c->addr));
239 if (i < 0) return(i);
240 bio=BIO_new_socket(i,BIO_CLOSE);
241 if (bio == NULL) goto err;
243 BIO_set_callback(bio,BIO_get_callback(b));
244 BIO_set_callback_arg(bio,BIO_get_callback_arg(b));
248 if (!BIO_socket_nbio(i,1))
250 BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
255 /* If the accept BIO has an bio_chain, we dup it and
256 * put the new socket at the end. */
257 if (c->bio_chain != NULL)
259 if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
261 if (!BIO_push(dbio,bio)) goto err;
264 if (BIO_push(b,bio) == NULL) goto err;
276 if (b->next_bio == NULL)
278 c->state=ACPT_S_GET_ACCEPT_SOCKET;
290 static int acpt_read(BIO *b, char *out, int outl)
295 BIO_clear_retry_flags(b);
296 data=(BIO_ACCEPT *)b->ptr;
298 while (b->next_bio == NULL)
300 ret=acpt_state(b,data);
301 if (ret <= 0) return(ret);
304 ret=BIO_read(b->next_bio,out,outl);
305 BIO_copy_next_retry(b);
309 static int acpt_write(BIO *b, char *in, int inl)
314 BIO_clear_retry_flags(b);
315 data=(BIO_ACCEPT *)b->ptr;
317 while (b->next_bio == NULL)
319 ret=acpt_state(b,data);
320 if (ret <= 0) return(ret);
323 ret=BIO_write(b->next_bio,in,inl);
324 BIO_copy_next_retry(b);
328 static long acpt_ctrl(BIO *b, int cmd, long num, char *ptr)
336 data=(BIO_ACCEPT *)b->ptr;
342 data->state=ACPT_S_BEFORE;
343 acpt_close_socket(b);
346 case BIO_C_DO_STATE_MACHINE:
347 /* use this one to start the connection */
348 ret=(long)acpt_state(b,data);
350 case BIO_C_SET_ACCEPT:
356 if (data->param_addr != NULL)
357 Free(data->param_addr);
358 data->param_addr=BUF_strdup(ptr);
362 data->accept_nbio=(ptr != NULL);
366 if (data->bio_chain != NULL)
367 BIO_free(data->bio_chain);
368 data->bio_chain=(BIO *)ptr;
377 b->num= *((int *)ptr);
378 data->accept_sock=b->num;
379 data->state=ACPT_S_GET_ACCEPT_SOCKET;
380 b->shutdown=(int)num;
388 *ip=data->accept_sock;
389 ret=data->accept_sock;
394 case BIO_C_GET_ACCEPT:
400 *pp=data->param_addr;
408 case BIO_CTRL_GET_CLOSE:
411 case BIO_CTRL_SET_CLOSE:
412 b->shutdown=(int)num;
414 case BIO_CTRL_PENDING:
415 case BIO_CTRL_WPENDING:
420 case BIO_C_SET_BIND_MODE:
421 data->bind_mode=(int)num;
423 case BIO_C_GET_BIND_MODE:
424 ret=(long)data->bind_mode;
428 /* if (data->param_port) EAY EAY
429 BIO_set_port(dbio,data->param_port);
430 if (data->param_hostname)
431 BIO_set_hostname(dbio,data->param_hostname);
432 BIO_set_nbio(dbio,data->nbio); */
442 static int acpt_puts(BIO *bp, char *str)
447 ret=acpt_write(bp,str,n);
451 BIO *BIO_new_accept(char *str)
455 ret=BIO_new(BIO_s_accept());
456 if (ret == NULL) return(NULL);
457 if (BIO_set_accept_port(ret,str))