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
|
/*
* TCP protocol
* Copyright (c) 2002 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "avformat.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#if defined(__BEOS__)
typedef int socklen_t;
#endif
#ifndef __BEOS__
# include <arpa/inet.h>
#else
# include "barpainet.h"
#endif
#include <netdb.h>
#include <sys/time.h>
#include <fcntl.h>
typedef struct TCPContext {
int fd;
} TCPContext;
/* resolve host with also IP address parsing */
int resolve_host(struct in_addr *sin_addr, const char *hostname)
{
struct hostent *hp;
if ((inet_aton(hostname, sin_addr)) == 0) {
hp = gethostbyname(hostname);
if (!hp)
return -1;
memcpy (sin_addr, hp->h_addr, sizeof(struct in_addr));
}
return 0;
}
/* return non zero if error */
static int tcp_open(URLContext *h, const char *uri, int flags)
{
struct sockaddr_in dest_addr;
char hostname[1024], *q;
int port, fd = -1;
TCPContext *s = NULL;
fd_set wfds;
int fd_max, ret;
struct timeval tv;
socklen_t optlen;
char proto[1024],path[1024],tmp[1024]; // PETR: protocol and path strings
url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
&port, path, sizeof(path), uri); // PETR: use url_split
if (strcmp(proto,"tcp")) goto fail; // PETR: check protocol
if ((q = strchr(hostname,'@'))) { strcpy(tmp,q+1); strcpy(hostname,tmp); } // PETR: take only the part after '@' for tcp protocol
s = av_malloc(sizeof(TCPContext));
if (!s)
return -ENOMEM;
h->priv_data = s;
if (port <= 0 || port >= 65536)
goto fail;
dest_addr.sin_family = AF_INET;
dest_addr.sin_port = htons(port);
if (resolve_host(&dest_addr.sin_addr, hostname) < 0)
goto fail;
fd = socket(PF_INET, SOCK_STREAM, 0);
if (fd < 0)
goto fail;
fcntl(fd, F_SETFL, O_NONBLOCK);
redo:
ret = connect(fd, (struct sockaddr *)&dest_addr,
sizeof(dest_addr));
if (ret < 0) {
if (errno == EINTR)
goto redo;
if (errno != EINPROGRESS)
goto fail;
/* wait until we are connected or until abort */
for(;;) {
if (url_interrupt_cb()) {
ret = -EINTR;
goto fail1;
}
fd_max = fd;
FD_ZERO(&wfds);
FD_SET(fd, &wfds);
tv.tv_sec = 0;
tv.tv_usec = 100 * 1000;
ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
if (ret > 0 && FD_ISSET(fd, &wfds))
break;
}
/* test error */
optlen = sizeof(ret);
getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
if (ret != 0)
goto fail;
}
s->fd = fd;
return 0;
fail:
ret = AVERROR_IO;
fail1:
if (fd >= 0)
close(fd);
av_free(s);
return ret;
}
static int tcp_read(URLContext *h, uint8_t *buf, int size)
{
TCPContext *s = h->priv_data;
int len, fd_max, ret;
fd_set rfds;
struct timeval tv;
for (;;) {
if (url_interrupt_cb())
return -EINTR;
fd_max = s->fd;
FD_ZERO(&rfds);
FD_SET(s->fd, &rfds);
tv.tv_sec = 0;
tv.tv_usec = 100 * 1000;
ret = select(fd_max + 1, &rfds, NULL, NULL, &tv);
if (ret > 0 && FD_ISSET(s->fd, &rfds)) {
#ifdef __BEOS__
len = recv(s->fd, buf, size, 0);
#else
len = read(s->fd, buf, size);
#endif
if (len < 0) {
if (errno != EINTR && errno != EAGAIN)
#ifdef __BEOS__
return errno;
#else
return -errno;
#endif
} else return len;
} else if (ret < 0) {
return -1;
}
}
}
static int tcp_write(URLContext *h, uint8_t *buf, int size)
{
TCPContext *s = h->priv_data;
int ret, size1, fd_max, len;
fd_set wfds;
struct timeval tv;
size1 = size;
while (size > 0) {
if (url_interrupt_cb())
return -EINTR;
fd_max = s->fd;
FD_ZERO(&wfds);
FD_SET(s->fd, &wfds);
tv.tv_sec = 0;
tv.tv_usec = 100 * 1000;
ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
if (ret > 0 && FD_ISSET(s->fd, &wfds)) {
#ifdef __BEOS__
len = send(s->fd, buf, size, 0);
#else
len = write(s->fd, buf, size);
#endif
if (len < 0) {
if (errno != EINTR && errno != EAGAIN) {
#ifdef __BEOS__
return errno;
#else
return -errno;
#endif
}
continue;
}
size -= len;
buf += len;
} else if (ret < 0) {
return -1;
}
}
return size1 - size;
}
static int tcp_close(URLContext *h)
{
TCPContext *s = h->priv_data;
#ifdef CONFIG_BEOS_NETSERVER
closesocket(s->fd);
#else
close(s->fd);
#endif
av_free(s);
return 0;
}
URLProtocol tcp_protocol = {
"tcp",
tcp_open,
tcp_read,
tcp_write,
NULL, /* seek */
tcp_close,
};
|
