Change some dprintf to av_log
[libav.git] / libavformat / tcp.c
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1/*
2 * TCP protocol
3 * Copyright (c) 2002 Fabrice Bellard.
4 *
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5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
b78e7197 10 * version 2.1 of the License, or (at your option) any later version.
171bbb03 11 *
b78e7197 12 * FFmpeg is distributed in the hope that it will be useful,
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
b78e7197 18 * License along with FFmpeg; if not, write to the Free Software
5509bffa 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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20 */
21#include "avformat.h"
22#include <unistd.h>
42572ef5 23#include "network.h"
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24#include <sys/time.h>
25#include <fcntl.h>
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26
27typedef struct TCPContext {
28 int fd;
29} TCPContext;
30
31/* resolve host with also IP address parsing */
32int resolve_host(struct in_addr *sin_addr, const char *hostname)
33{
34 struct hostent *hp;
35
36 if ((inet_aton(hostname, sin_addr)) == 0) {
37 hp = gethostbyname(hostname);
38 if (!hp)
39 return -1;
40 memcpy (sin_addr, hp->h_addr, sizeof(struct in_addr));
41 }
42 return 0;
43}
44
45/* return non zero if error */
46static int tcp_open(URLContext *h, const char *uri, int flags)
47{
48 struct sockaddr_in dest_addr;
49 char hostname[1024], *q;
50 int port, fd = -1;
88730be6 51 TCPContext *s = NULL;
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52 fd_set wfds;
53 int fd_max, ret;
54 struct timeval tv;
55 socklen_t optlen;
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56 char proto[1024],path[1024],tmp[1024]; // PETR: protocol and path strings
57
58 url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
59 &port, path, sizeof(path), uri); // PETR: use url_split
60 if (strcmp(proto,"tcp")) goto fail; // PETR: check protocol
61 if ((q = strchr(hostname,'@'))) { strcpy(tmp,q+1); strcpy(hostname,tmp); } // PETR: take only the part after '@' for tcp protocol
115329f1 62
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63 s = av_malloc(sizeof(TCPContext));
64 if (!s)
65 return -ENOMEM;
66 h->priv_data = s;
115329f1 67
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68 if (port <= 0 || port >= 65536)
69 goto fail;
115329f1 70
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71 dest_addr.sin_family = AF_INET;
72 dest_addr.sin_port = htons(port);
73 if (resolve_host(&dest_addr.sin_addr, hostname) < 0)
74 goto fail;
75
76 fd = socket(PF_INET, SOCK_STREAM, 0);
77 if (fd < 0)
78 goto fail;
09787fb8 79 fcntl(fd, F_SETFL, O_NONBLOCK);
115329f1 80
09787fb8 81 redo:
115329f1 82 ret = connect(fd, (struct sockaddr *)&dest_addr,
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83 sizeof(dest_addr));
84 if (ret < 0) {
85 if (errno == EINTR)
86 goto redo;
87 if (errno != EINPROGRESS)
88 goto fail;
171bbb03 89
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90 /* wait until we are connected or until abort */
91 for(;;) {
92 if (url_interrupt_cb()) {
93 ret = -EINTR;
94 goto fail1;
95 }
96 fd_max = fd;
97 FD_ZERO(&wfds);
98 FD_SET(fd, &wfds);
99 tv.tv_sec = 0;
100 tv.tv_usec = 100 * 1000;
101 ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
102 if (ret > 0 && FD_ISSET(fd, &wfds))
103 break;
104 }
115329f1 105
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106 /* test error */
107 optlen = sizeof(ret);
108 getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
109 if (ret != 0)
110 goto fail;
111 }
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112 s->fd = fd;
113 return 0;
114
115 fail:
0bd586c5 116 ret = AVERROR_IO;
09787fb8 117 fail1:
171bbb03 118 if (fd >= 0)
e9d511dc 119 closesocket(fd);
171bbb03 120 av_free(s);
09787fb8 121 return ret;
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122}
123
0c1a9eda 124static int tcp_read(URLContext *h, uint8_t *buf, int size)
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125{
126 TCPContext *s = h->priv_data;
b51469a0 127 int len, fd_max, ret;
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128 fd_set rfds;
129 struct timeval tv;
171bbb03 130
9eef2b77 131 for (;;) {
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132 if (url_interrupt_cb())
133 return -EINTR;
134 fd_max = s->fd;
135 FD_ZERO(&rfds);
136 FD_SET(s->fd, &rfds);
137 tv.tv_sec = 0;
138 tv.tv_usec = 100 * 1000;
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139 ret = select(fd_max + 1, &rfds, NULL, NULL, &tv);
140 if (ret > 0 && FD_ISSET(s->fd, &rfds)) {
b51469a0 141 len = recv(s->fd, buf, size, 0);
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142 if (len < 0) {
143 if (errno != EINTR && errno != EAGAIN)
9ddd71fc 144#ifdef __BEOS__
b51469a0 145 return errno;
9ddd71fc 146#else
b51469a0 147 return -errno;
9ddd71fc 148#endif
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149 } else return len;
150 } else if (ret < 0) {
151 return -1;
152 }
171bbb03 153 }
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154}
155
0c1a9eda 156static int tcp_write(URLContext *h, uint8_t *buf, int size)
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157{
158 TCPContext *s = h->priv_data;
b51469a0 159 int ret, size1, fd_max, len;
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160 fd_set wfds;
161 struct timeval tv;
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162
163 size1 = size;
164 while (size > 0) {
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165 if (url_interrupt_cb())
166 return -EINTR;
167 fd_max = s->fd;
168 FD_ZERO(&wfds);
169 FD_SET(s->fd, &wfds);
170 tv.tv_sec = 0;
171 tv.tv_usec = 100 * 1000;
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172 ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
173 if (ret > 0 && FD_ISSET(s->fd, &wfds)) {
b51469a0 174 len = send(s->fd, buf, size, 0);
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175 if (len < 0) {
176 if (errno != EINTR && errno != EAGAIN) {
9ddd71fc 177#ifdef __BEOS__
b51469a0 178 return errno;
9ddd71fc 179#else
b51469a0 180 return -errno;
9ddd71fc 181#endif
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182 }
183 continue;
6c8e0d4d 184 }
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185 size -= len;
186 buf += len;
187 } else if (ret < 0) {
188 return -1;
6c8e0d4d 189 }
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190 }
191 return size1 - size;
192}
193
194static int tcp_close(URLContext *h)
195{
196 TCPContext *s = h->priv_data;
9ddd71fc 197 closesocket(s->fd);
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198 av_free(s);
199 return 0;
200}
201
202URLProtocol tcp_protocol = {
203 "tcp",
204 tcp_open,
205 tcp_read,
206 tcp_write,
207 NULL, /* seek */
208 tcp_close,
209};