56783b72a16379612973f61a288d18a93bb6fd45
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"
21 /** the output buffer size of the http receiver */
22 #define BUFSIZE (32 * 1024)
25 * the possible states of a http receiver node
29 enum http_recv_status
{HTTP_CONNECTED
, HTTP_SENT_GET_REQUEST
, HTTP_STREAMING
};
32 * data specific to the http receiver
34 * Each running instance of the http receiver reserves space for one such struct.
36 struct private_http_recv_data
{
40 * the current status of the http receiver node
42 * It gets initialized to \p HTTP_CONNECTED by the open function of the
45 * \sa receiver::open, receiver_node.
47 enum http_recv_status status
;
51 * the file descriptor used for receiving the http stream
53 * The pre_select function of the http receiver adds this file descriptor to
54 * the set of file decriptors which are checked for reading/writing (depending
55 * on the current status) by the select loop of the application (para_audiod or
58 * The post_select function of the http receiver uses \a fd, if ready, to
59 * establish the http connection, and updates \a status according to the new
60 * state of the connection. As soon as \a status is \p HTTP_STREAMING, \a fd is
61 * going to be only checked for reading. If data is available, it is read into
62 * the output buffer of the receiver node by post_select.
64 * \sa receiver::pre_select receiver::post_select receiver_node, http_recv_status
69 static void http_shutdown(void)
74 static char *make_request_msg(void)
76 char *ret
, *hn
= para_hostname();
77 ret
= make_message("%s1.0\nHost: %s\nUser-Agent: para_recv/%s\n\n\n",
78 HTTP_GET_MSG
, hn
, PACKAGE_VERSION
);
83 static void http_recv_pre_select(struct sched
*s
, struct task
*t
)
85 struct receiver_node
*rn
= t
->private_data
;
86 struct private_http_recv_data
*phd
= rn
->private_data
;
89 if (phd
->status
== HTTP_CONNECTED
)
90 para_fd_set(phd
->fd
, &s
->wfds
, &s
->max_fileno
);
92 para_fd_set(phd
->fd
, &s
->rfds
, &s
->max_fileno
);
96 static void http_recv_post_select(struct sched
*s
, struct task
*t
)
98 struct receiver_node
*rn
= t
->private_data
;
99 struct private_http_recv_data
*phd
= rn
->private_data
;
101 t
->ret
= -E_HTTP_RECV_EOF
;
102 if (rn
->output_eof
&& *rn
->output_eof
)
107 if (phd
->status
== HTTP_CONNECTED
) {
109 if (!FD_ISSET(phd
->fd
, &s
->wfds
))
111 rq
= make_request_msg();
112 PARA_INFO_LOG("%s", "sending http request\n");
113 t
->ret
= send_va_buffer(phd
->fd
, "%s", rq
);
116 phd
->status
= HTTP_SENT_GET_REQUEST
;
119 if (!FD_ISSET(phd
->fd
, &s
->rfds
))
121 if (phd
->status
== HTTP_SENT_GET_REQUEST
) {
122 t
->ret
= recv_pattern(phd
->fd
, HTTP_OK_MSG
, MAXLINE
);
125 PARA_INFO_LOG("%s", "received ok msg, streaming\n");
127 phd
->status
= HTTP_STREAMING
;
130 t
->ret
= -E_HTTP_RECV_OVERRUN
;
131 if (rn
->loaded
>= BUFSIZE
)
133 t
->ret
= recv_bin_buffer(phd
->fd
, rn
->buf
+ rn
->loaded
,
134 BUFSIZE
- rn
->loaded
);
137 t
->ret
= -E_HTTP_RECV_EOF
;
140 rn
->loaded
+= t
->ret
;
146 static void http_recv_close(struct receiver_node
*rn
)
148 struct private_http_recv_data
*phd
= rn
->private_data
;
151 free(rn
->private_data
);
154 static void *http_recv_parse_config(int argc
, char **argv
)
156 struct http_recv_args_info
*tmp
= para_calloc(sizeof(struct http_recv_args_info
));
158 if (!http_recv_cmdline_parser(argc
, argv
, tmp
))
164 static int http_recv_open(struct receiver_node
*rn
)
166 struct private_http_recv_data
*phd
;
168 struct http_recv_args_info
*conf
= rn
->conf
;
169 struct sockaddr_in their_addr
;
172 rn
->buf
= para_calloc(BUFSIZE
);
173 rn
->private_data
= para_calloc(sizeof(struct private_http_recv_data
));
174 phd
= rn
->private_data
;
175 ret
= get_host_info(conf
->host_arg
, &he
);
183 /* init their_addr */
184 init_sockaddr(&their_addr
, conf
->port_arg
, he
);
186 PARA_NOTICE_LOG("connecting to %s:%d\n", conf
->host_arg
,
188 ret
= para_connect(phd
->fd
, &their_addr
);
193 mark_fd_nonblock(phd
->fd
);
194 phd
->status
= HTTP_CONNECTED
;
197 free(rn
->private_data
);
203 * the init function of the http receiver
205 * \param r pointer to the receiver struct to initialize
207 * Just initialize all function pointers of \a r.
209 void http_recv_init(struct receiver
*r
)
211 r
->open
= http_recv_open
;
212 r
->close
= http_recv_close
;
213 r
->pre_select
= http_recv_pre_select
;
214 r
->post_select
= http_recv_post_select
;
215 r
->shutdown
= http_shutdown
;
216 r
->parse_config
= http_recv_parse_config
;