5f1d779991d60dfceefd446c54c0ef700e6ca523
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 */
25 #include "http_recv.cmdline.h"
30 /** the output buffer size of the http receiver */
31 #define BUFSIZE (32 * 1024)
34 * the possible states of a http receiver node
38 enum http_recv_status
{HTTP_CONNECTED
, HTTP_SENT_GET_REQUEST
, HTTP_STREAMING
};
41 * data specific to the http receiver
43 * Each running instance of the http receiver reserves space for one such struct.
45 struct private_http_recv_data
{
49 * the current status of the http receiver node
51 * It gets initialized to #HTTP_CONNECTED by the open function of the
54 * \sa receiver::open, receiver_node.
56 enum http_recv_status status
;
60 * the file descriptor used for receiving the http stream
62 * The pre_select function of the http receiver adds this file descriptor to
63 * the set of file decriptors which are checked for reading/writing (depending
64 * on the current status) by the select loop of the application (para_audiod or
67 * The post_select function of the http receiver uses \a fd, if ready, to
68 * establish the http connection, and updates \a status according to the new
69 * state of the connection. As soon as \a status is #HTTP_STREAMING, \a fd is
70 * going to be only checked for reading. If data is available, it is read into
71 * the output buffer of the receiver node by post_select.
73 * \sa receiver::pre_select receiver::post_select receiver_node
78 static void http_shutdown(void)
83 static char *make_request_msg(void)
85 char *ret
, *hn
= para_hostname();
86 ret
= make_message("%s1.0\nHost: %s\nUser-Agent: para_recv/%s\n\n\n",
87 HTTP_GET_MSG
, hn
, VERSION
);
92 static int http_pre_select(struct receiver_node
*rn
, fd_set
*rfds
, fd_set
*wfds
,
93 __a_unused
struct timeval
*timeout
)
95 struct private_http_recv_data
*phd
= rn
->private_data
;
97 if (phd
->status
== HTTP_CONNECTED
)
98 FD_SET(phd
->fd
, wfds
);
100 FD_SET(phd
->fd
, rfds
);
104 static int http_post_select(struct receiver_node
*rn
, int select_ret
,
105 fd_set
*rfds
, fd_set
*wfds
)
108 struct private_http_recv_data
*phd
= rn
->private_data
;
110 if (!select_ret
) /* we're not interested in timeouts */
112 if (phd
->status
== HTTP_CONNECTED
) {
114 if (!FD_ISSET(phd
->fd
, wfds
))
115 return 1; /* nothing to do */
116 rq
= make_request_msg();
117 PARA_NOTICE_LOG("%s", "sending http request\n");
118 ret
= send_va_buffer(phd
->fd
, "%s", rq
);
121 return E_SEND_HTTP_REQUEST
;
122 phd
->status
= HTTP_SENT_GET_REQUEST
;
125 if (!FD_ISSET(phd
->fd
, rfds
))
126 return 1; /* nothing to do */
127 if (phd
->status
== HTTP_SENT_GET_REQUEST
) {
128 ret
= recv_pattern(phd
->fd
, HTTP_OK_MSG
, MAXLINE
);
130 return -E_MISSING_OK
;
131 PARA_NOTICE_LOG("%s", "received ok msg, streaming\n");
132 phd
->status
= HTTP_STREAMING
;
135 /* already streaming */
136 if (rn
->loaded
>= BUFSIZE
) {
137 PARA_ERROR_LOG("%s", "buffer overrun\n");
140 ret
= recv_bin_buffer(phd
->fd
, rn
->buf
+ rn
->loaded
, BUFSIZE
- rn
->loaded
);
142 PARA_NOTICE_LOG("recv returned %d/%zd\n", ret
, BUFSIZE
- rn
->loaded
);
143 return ret
< 0? -E_HTTP_RECV_BUF
: 0;
149 static void http_recv_close(struct receiver_node
*rn
)
151 struct private_http_recv_data
*phd
= rn
->private_data
;
154 free(rn
->private_data
);
157 static void *http_recv_parse_config(int argc
, char **argv
)
159 struct http_recv_args_info
*tmp
= para_calloc(sizeof(struct http_recv_args_info
));
161 if (!http_recv_cmdline_parser(argc
, argv
, tmp
))
167 static int http_recv_open(struct receiver_node
*rn
)
169 struct private_http_recv_data
*phd
;
171 struct http_recv_args_info
*conf
= rn
->conf
;
172 struct sockaddr_in their_addr
;
175 rn
->buf
= para_calloc(BUFSIZE
);
176 rn
->private_data
= para_calloc(sizeof(struct private_http_recv_data
));
177 phd
= rn
->private_data
;
179 if (!(he
= get_host_info(conf
->host_arg
)))
183 if ((phd
->fd
= get_socket()) < 0)
185 /* init their_addr */
186 init_sockaddr(&their_addr
, conf
->port_arg
, he
);
188 PARA_NOTICE_LOG("connecting to %s:%d\n", conf
->host_arg
,
190 ret
= para_connect(phd
->fd
, &their_addr
);
193 phd
->status
= HTTP_CONNECTED
;
196 free(rn
->private_data
);
202 * the init function of the http receiver
204 * \param r pointer to the receiver struct to initialize
206 * Just initialize all function pointers of \a r.
208 void http_recv_init(struct receiver
*r
)
210 r
->open
= http_recv_open
;
211 r
->close
= http_recv_close
;
212 r
->pre_select
= http_pre_select
;
213 r
->post_select
= http_post_select
;
214 r
->shutdown
= http_shutdown
;
215 r
->parse_config
= http_recv_parse_config
;