b4d386027bcd65796667dc68de37d9d3d791f22b
2 * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
19 /** \file http_recv.c paraslash's http receiver */
27 #include "http_recv.cmdline.h"
33 /** the output buffer size of the http receiver */
34 #define BUFSIZE (32 * 1024)
37 * the possible states of a http receiver node
41 enum http_recv_status
{HTTP_CONNECTED
, HTTP_SENT_GET_REQUEST
, HTTP_STREAMING
};
44 * data specific to the http receiver
46 * Each running instance of the http receiver reserves space for one such struct.
48 struct private_http_recv_data
{
52 * the current status of the http receiver node
54 * It gets initialized to #HTTP_CONNECTED by the open function of the
57 * \sa receiver::open, receiver_node.
59 enum http_recv_status status
;
63 * the file descriptor used for receiving the http stream
65 * The pre_select function of the http receiver adds this file descriptor to
66 * the set of file decriptors which are checked for reading/writing (depending
67 * on the current status) by the select loop of the application (para_audiod or
70 * The post_select function of the http receiver uses \a fd, if ready, to
71 * establish the http connection, and updates \a status according to the new
72 * state of the connection. As soon as \a status is #HTTP_STREAMING, \a fd is
73 * going to be only checked for reading. If data is available, it is read into
74 * the output buffer of the receiver node by post_select.
76 * \sa receiver::pre_select receiver::post_select receiver_node
81 static void http_shutdown(void)
86 static char *make_request_msg(void)
88 char *ret
, *hn
= para_hostname();
89 ret
= make_message("%s1.0\nHost: %s\nUser-Agent: para_recv/%s\n\n\n",
90 HTTP_GET_MSG
, hn
, VERSION
);
95 static void http_recv_pre_select(struct sched
*s
, struct task
*t
)
97 struct receiver_node
*rn
= t
->private_data
;
98 struct private_http_recv_data
*phd
= rn
->private_data
;
101 if (phd
->status
== HTTP_CONNECTED
)
102 para_fd_set(phd
->fd
, &s
->wfds
, &s
->max_fileno
);
104 para_fd_set(phd
->fd
, &s
->rfds
, &s
->max_fileno
);
108 static void http_recv_post_select(struct sched
*s
, struct task
*t
)
110 struct receiver_node
*rn
= t
->private_data
;
111 struct private_http_recv_data
*phd
= rn
->private_data
;
114 if (!s
->select_ret
) /* we're not interested in timeouts */
116 if (phd
->status
== HTTP_CONNECTED
) {
118 if (!FD_ISSET(phd
->fd
, &s
->wfds
))
119 return; /* nothing to do */
120 rq
= make_request_msg();
121 PARA_NOTICE_LOG("%s", "sending http request\n");
122 t
->ret
= send_va_buffer(phd
->fd
, "%s", rq
);
125 phd
->status
= HTTP_SENT_GET_REQUEST
;
128 if (!FD_ISSET(phd
->fd
, &s
->rfds
))
129 return; /* nothing to do */
130 if (phd
->status
== HTTP_SENT_GET_REQUEST
) {
131 t
->ret
= recv_pattern(phd
->fd
, HTTP_OK_MSG
, MAXLINE
);
134 PARA_NOTICE_LOG("%s", "received ok msg, streaming\n");
135 phd
->status
= HTTP_STREAMING
;
139 /* already streaming */
140 if (rn
->loaded
>= BUFSIZE
)
142 t
->ret
= recv_bin_buffer(phd
->fd
, rn
->buf
+ rn
->loaded
,
143 BUFSIZE
- rn
->loaded
);
147 t
->ret
= -E_HTTP_RECV_EOF
;
150 rn
->loaded
+= t
->ret
;
153 static void http_recv_close(struct receiver_node
*rn
)
155 struct private_http_recv_data
*phd
= rn
->private_data
;
158 free(rn
->private_data
);
161 static void *http_recv_parse_config(int argc
, char **argv
)
163 struct http_recv_args_info
*tmp
= para_calloc(sizeof(struct http_recv_args_info
));
165 if (!http_recv_cmdline_parser(argc
, argv
, tmp
))
171 static int http_recv_open(struct receiver_node
*rn
)
173 struct private_http_recv_data
*phd
;
175 struct http_recv_args_info
*conf
= rn
->conf
;
176 struct sockaddr_in their_addr
;
179 rn
->buf
= para_calloc(BUFSIZE
);
180 rn
->private_data
= para_calloc(sizeof(struct private_http_recv_data
));
181 phd
= rn
->private_data
;
183 if (!(he
= get_host_info(conf
->host_arg
)))
187 if ((phd
->fd
= get_socket()) < 0)
189 /* init their_addr */
190 init_sockaddr(&their_addr
, conf
->port_arg
, he
);
192 PARA_NOTICE_LOG("connecting to %s:%d\n", conf
->host_arg
,
194 ret
= para_connect(phd
->fd
, &their_addr
);
197 phd
->status
= HTTP_CONNECTED
;
200 free(rn
->private_data
);
206 * the init function of the http receiver
208 * \param r pointer to the receiver struct to initialize
210 * Just initialize all function pointers of \a r.
212 void http_recv_init(struct receiver
*r
)
214 r
->open
= http_recv_open
;
215 r
->close
= http_recv_close
;
216 r
->pre_select
= http_recv_pre_select
;
217 r
->post_select
= http_recv_post_select
;
218 r
->shutdown
= http_shutdown
;
219 r
->parse_config
= http_recv_parse_config
;