f82924d9cfd728c83f4bed516fc4e84dbe21e139
2 * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file http_recv.c paraslash's http receiver */
15 #include "http_recv.cmdline.h"
20 /** the output buffer size of the http receiver */
21 #define BUFSIZE (32 * 1024)
24 * the possible states of a http receiver node
28 enum http_recv_status
{HTTP_CONNECTED
, HTTP_SENT_GET_REQUEST
, HTTP_STREAMING
};
31 * data specific to the http receiver
33 * Each running instance of the http receiver reserves space for one such struct.
35 struct private_http_recv_data
{
39 * the current status of the http receiver node
41 * It gets initialized to \p HTTP_CONNECTED by the open function of the
44 * \sa receiver::open, receiver_node.
46 enum http_recv_status status
;
50 * the file descriptor used for receiving the http stream
52 * The pre_select function of the http receiver adds this file descriptor to
53 * the set of file decriptors which are checked for reading/writing (depending
54 * on the current status) by the select loop of the application (para_audiod or
57 * The post_select function of the http receiver uses \a fd, if ready, to
58 * establish the http connection, and updates \a status according to the new
59 * state of the connection. As soon as \a status is \p HTTP_STREAMING, \a fd is
60 * going to be only checked for reading. If data is available, it is read into
61 * the output buffer of the receiver node by post_select.
63 * \sa receiver::pre_select receiver::post_select receiver_node, http_recv_status
68 static void http_shutdown(void)
73 static char *make_request_msg(void)
75 char *ret
, *hn
= para_hostname();
76 ret
= make_message("%s1.0\nHost: %s\nUser-Agent: para_recv/%s\n\n\n",
77 HTTP_GET_MSG
, hn
, PACKAGE_VERSION
);
82 static void http_recv_pre_select(struct sched
*s
, struct task
*t
)
84 struct receiver_node
*rn
= t
->private_data
;
85 struct private_http_recv_data
*phd
= rn
->private_data
;
88 if (phd
->status
== HTTP_CONNECTED
)
89 para_fd_set(phd
->fd
, &s
->wfds
, &s
->max_fileno
);
91 para_fd_set(phd
->fd
, &s
->rfds
, &s
->max_fileno
);
95 static void http_recv_post_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
;
100 t
->ret
= -E_HTTP_RECV_EOF
;
101 if (rn
->output_eof
&& *rn
->output_eof
)
106 if (phd
->status
== HTTP_CONNECTED
) {
108 if (!FD_ISSET(phd
->fd
, &s
->wfds
))
110 rq
= make_request_msg();
111 PARA_INFO_LOG("%s", "sending http request\n");
112 t
->ret
= send_va_buffer(phd
->fd
, "%s", rq
);
115 phd
->status
= HTTP_SENT_GET_REQUEST
;
118 if (!FD_ISSET(phd
->fd
, &s
->rfds
))
120 if (phd
->status
== HTTP_SENT_GET_REQUEST
) {
121 t
->ret
= recv_pattern(phd
->fd
, HTTP_OK_MSG
, MAXLINE
);
124 PARA_INFO_LOG("%s", "received ok msg, streaming\n");
126 phd
->status
= HTTP_STREAMING
;
129 t
->ret
= -E_HTTP_RECV_OVERRUN
;
130 if (rn
->loaded
>= BUFSIZE
)
132 t
->ret
= recv_bin_buffer(phd
->fd
, rn
->buf
+ rn
->loaded
,
133 BUFSIZE
- rn
->loaded
);
136 t
->ret
= -E_HTTP_RECV_EOF
;
139 rn
->loaded
+= t
->ret
;
145 static void http_recv_close(struct receiver_node
*rn
)
147 struct private_http_recv_data
*phd
= rn
->private_data
;
150 free(rn
->private_data
);
153 static void *http_recv_parse_config(int argc
, char **argv
)
155 struct http_recv_args_info
*tmp
= para_calloc(sizeof(struct http_recv_args_info
));
157 if (!http_recv_cmdline_parser(argc
, argv
, tmp
))
163 static int http_recv_open(struct receiver_node
*rn
)
165 struct private_http_recv_data
*phd
;
167 struct http_recv_args_info
*conf
= rn
->conf
;
168 struct sockaddr_in their_addr
;
171 rn
->buf
= para_calloc(BUFSIZE
);
172 rn
->private_data
= para_calloc(sizeof(struct private_http_recv_data
));
173 phd
= rn
->private_data
;
174 ret
= get_host_info(conf
->host_arg
, &he
);
177 ret
= get_stream_socket(AF_INET
);
181 /* init their_addr */
182 init_sockaddr(&their_addr
, conf
->port_arg
, he
);
183 PARA_NOTICE_LOG("connecting to %s:%d\n", conf
->host_arg
,
185 ret
= PARA_CONNECT(phd
->fd
, &their_addr
);
190 mark_fd_nonblock(phd
->fd
);
191 phd
->status
= HTTP_CONNECTED
;
194 free(rn
->private_data
);
200 * the init function of the http receiver
202 * \param r pointer to the receiver struct to initialize
204 * Just initialize all function pointers of \a r.
206 void http_recv_init(struct receiver
*r
)
208 r
->open
= http_recv_open
;
209 r
->close
= http_recv_close
;
210 r
->pre_select
= http_recv_pre_select
;
211 r
->post_select
= http_recv_post_select
;
212 r
->shutdown
= http_shutdown
;
213 r
->parse_config
= http_recv_parse_config
;