1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
|
/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include <stdlib.h>
#include "bio_local.h"
#ifndef OPENSSL_NO_SOCK
# define SOCKET_PROTOCOL IPPROTO_TCP
# ifdef SO_MAXCONN
# define MAX_LISTEN SO_MAXCONN
# elif defined(SOMAXCONN)
# define MAX_LISTEN SOMAXCONN
# else
# define MAX_LISTEN 32
# endif
# if defined(OPENSSL_SYS_WINDOWS)
static int wsa_init_done = 0;
# endif
# if defined __TANDEM
# include <unistd.h>
# include <sys/time.h> /* select */
# if defined(OPENSSL_TANDEM_FLOSS)
# include <floss.h(floss_select)>
# endif
# elif !defined _WIN32
# include <unistd.h>
# include <sys/select.h>
# else
# include <winsock.h> /* for type fd_set */
# endif
# ifndef OPENSSL_NO_DEPRECATED_1_1_0
int BIO_get_host_ip(const char *str, unsigned char *ip)
{
BIO_ADDRINFO *res = NULL;
int ret = 0;
if (BIO_sock_init() != 1)
return 0; /* don't generate another error code here */
if (BIO_lookup(str, NULL, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
size_t l;
if (BIO_ADDRINFO_family(res) != AF_INET) {
BIOerr(BIO_F_BIO_GET_HOST_IP,
BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
} else if (BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), NULL, &l)) {
/*
* Because only AF_INET addresses will reach this far, we can assert
* that l should be 4
*/
if (ossl_assert(l == 4))
ret = BIO_ADDR_rawaddress(BIO_ADDRINFO_address(res), ip, &l);
}
BIO_ADDRINFO_free(res);
} else {
ERR_add_error_data(2, "host=", str);
}
return ret;
}
int BIO_get_port(const char *str, unsigned short *port_ptr)
{
BIO_ADDRINFO *res = NULL;
int ret = 0;
if (str == NULL) {
BIOerr(BIO_F_BIO_GET_PORT, BIO_R_NO_PORT_DEFINED);
return 0;
}
if (BIO_sock_init() != 1)
return 0; /* don't generate another error code here */
if (BIO_lookup(NULL, str, BIO_LOOKUP_CLIENT, AF_INET, SOCK_STREAM, &res)) {
if (BIO_ADDRINFO_family(res) != AF_INET) {
BIOerr(BIO_F_BIO_GET_PORT,
BIO_R_ADDRINFO_ADDR_IS_NOT_AF_INET);
} else {
*port_ptr = ntohs(BIO_ADDR_rawport(BIO_ADDRINFO_address(res)));
ret = 1;
}
BIO_ADDRINFO_free(res);
} else {
ERR_add_error_data(2, "host=", str);
}
return ret;
}
# endif
int BIO_sock_error(int sock)
{
int j = 0, i;
socklen_t size = sizeof(j);
/*
* Note: under Windows the third parameter is of type (char *) whereas
* under other systems it is (void *) if you don't have a cast it will
* choke the compiler: if you do have a cast then you can either go for
* (char *) or (void *).
*/
i = getsockopt(sock, SOL_SOCKET, SO_ERROR, (void *)&j, &size);
if (i < 0)
return get_last_socket_error();
else
return j;
}
# ifndef OPENSSL_NO_DEPRECATED_1_1_0
struct hostent *BIO_gethostbyname(const char *name)
{
/*
* Caching gethostbyname() results forever is wrong, so we have to let
* the true gethostbyname() worry about this
*/
return gethostbyname(name);
}
# endif
int BIO_sock_init(void)
{
# ifdef OPENSSL_SYS_WINDOWS
static struct WSAData wsa_state;
if (!wsa_init_done) {
wsa_init_done = 1;
memset(&wsa_state, 0, sizeof(wsa_state));
/*
* Not making wsa_state available to the rest of the code is formally
* wrong. But the structures we use are [believed to be] invariable
* among Winsock DLLs, while API availability is [expected to be]
* probed at run-time with DSO_global_lookup.
*/
if (WSAStartup(0x0202, &wsa_state) != 0) {
ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
"calling wsastartup()");
BIOerr(BIO_F_BIO_SOCK_INIT, BIO_R_WSASTARTUP);
return -1;
}
}
# endif /* OPENSSL_SYS_WINDOWS */
# ifdef WATT32
extern int _watt_do_exit;
_watt_do_exit = 0; /* don't make sock_init() call exit() */
if (sock_init())
return -1;
# endif
return 1;
}
void bio_sock_cleanup_int(void)
{
# ifdef OPENSSL_SYS_WINDOWS
if (wsa_init_done) {
wsa_init_done = 0;
WSACleanup();
}
# endif
}
int BIO_socket_ioctl(int fd, long type, void *arg)
{
int i;
# ifdef __DJGPP__
i = ioctlsocket(fd, type, (char *)arg);
# else
# if defined(OPENSSL_SYS_VMS)
/*-
* 2011-02-18 SMS.
* VMS ioctl() can't tolerate a 64-bit "void *arg", but we
* observe that all the consumers pass in an "unsigned long *",
* so we arrange a local copy with a short pointer, and use
* that, instead.
*/
# if __INITIAL_POINTER_SIZE == 64
# define ARG arg_32p
# pragma pointer_size save
# pragma pointer_size 32
unsigned long arg_32;
unsigned long *arg_32p;
# pragma pointer_size restore
arg_32p = &arg_32;
arg_32 = *((unsigned long *)arg);
# else /* __INITIAL_POINTER_SIZE == 64 */
# define ARG arg
# endif /* __INITIAL_POINTER_SIZE == 64 [else] */
# else /* defined(OPENSSL_SYS_VMS) */
# define ARG arg
# endif /* defined(OPENSSL_SYS_VMS) [else] */
i = ioctlsocket(fd, type, ARG);
# endif /* __DJGPP__ */
if (i < 0)
ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
"calling ioctlsocket()");
return i;
}
# ifndef OPENSSL_NO_DEPRECATED_1_1_0
int BIO_get_accept_socket(char *host, int bind_mode)
{
int s = INVALID_SOCKET;
char *h = NULL, *p = NULL;
BIO_ADDRINFO *res = NULL;
if (!BIO_parse_hostserv(host, &h, &p, BIO_PARSE_PRIO_SERV))
return INVALID_SOCKET;
if (BIO_sock_init() != 1)
return INVALID_SOCKET;
if (BIO_lookup(h, p, BIO_LOOKUP_SERVER, AF_UNSPEC, SOCK_STREAM, &res) != 0)
goto err;
if ((s = BIO_socket(BIO_ADDRINFO_family(res), BIO_ADDRINFO_socktype(res),
BIO_ADDRINFO_protocol(res), 0)) == INVALID_SOCKET) {
s = INVALID_SOCKET;
goto err;
}
if (!BIO_listen(s, BIO_ADDRINFO_address(res),
bind_mode ? BIO_SOCK_REUSEADDR : 0)) {
BIO_closesocket(s);
s = INVALID_SOCKET;
}
err:
BIO_ADDRINFO_free(res);
OPENSSL_free(h);
OPENSSL_free(p);
return s;
}
int BIO_accept(int sock, char **ip_port)
{
BIO_ADDR res;
int ret = -1;
ret = BIO_accept_ex(sock, &res, 0);
if (ret == (int)INVALID_SOCKET) {
if (BIO_sock_should_retry(ret)) {
ret = -2;
goto end;
}
ERR_raise_data(ERR_LIB_SYS, get_last_socket_error(),
"calling accept()");
BIOerr(BIO_F_BIO_ACCEPT, BIO_R_ACCEPT_ERROR);
goto end;
}
if (ip_port != NULL) {
char *host = BIO_ADDR_hostname_string(&res, 1);
char *port = BIO_ADDR_service_string(&res, 1);
if (host != NULL && port != NULL)
*ip_port = OPENSSL_zalloc(strlen(host) + strlen(port) + 2);
else
*ip_port = NULL;
if (*ip_port == NULL) {
BIOerr(BIO_F_BIO_ACCEPT, ERR_R_MALLOC_FAILURE);
BIO_closesocket(ret);
ret = (int)INVALID_SOCKET;
} else {
strcpy(*ip_port, host);
strcat(*ip_port, ":");
strcat(*ip_port,<
|