-/*
- * Copyright (C) 2005-2010 Andre Noll <maan@systemlinux.org>
- *
- * Licensed under the GPL v2. For licencing details see COPYING.
- */
+/* Copyright (C) 2005 Andre Noll <maan@tuebingen.mpg.de>, see file COPYING. */
/** \file http_send.c paraslash's http sender */
+#include <netinet/in.h>
+#include <sys/socket.h>
#include <regex.h>
#include <sys/types.h>
-#include <dirent.h>
-#include <osl.h>
+#include <arpa/inet.h>
+#include <sys/un.h>
+#include <netdb.h>
+#include <lopsub.h>
+#include "server.lsg.h"
#include "para.h"
#include "error.h"
#include "string.h"
-#include "server.cmdline.h"
#include "afh.h"
-#include "afs.h"
+#include "net.h"
#include "server.h"
#include "http.h"
#include "list.h"
#include "send.h"
+#include "sched.h"
#include "vss.h"
#include "close_on_fork.h"
-#include "net.h"
#include "fd.h"
#include "chunk_queue.h"
-#include "acl.h"
/** Message sent to clients that do not send a valid get request. */
#define HTTP_ERR_MSG "HTTP/1.0 400 Bad Request\n"
static int http_send_msg(struct sender_client *sc, const char *msg)
{
- int ret = send_buffer(sc->fd, msg);
+ int ret = write_buffer(sc->fd, msg);
if (ret < 0)
shutdown_client(sc, hss);
shutdown_clients(hss);
}
+static void http_shutdown(void)
+{
+ http_shutdown_clients();
+ generic_acl_deplete(&hss->acl);
+}
+
+static int queue_chunk_or_shutdown(struct sender_client *sc,
+ struct sender_status *ss, const char *buf, size_t num_bytes)
+{
+ int ret = cq_enqueue(sc->cq, buf, num_bytes);
+ if (ret < 0)
+ shutdown_client(sc, ss);
+ return ret;
+}
+
+/**
+ * Send one chunk of audio data to a connected client.
+ *
+ * \param sc The client.
+ * \param ss The sender.
+ * \param current_chunk The number of the chunk to write.
+ * \param buf The data to write.
+ * \param len The number of bytes of \a buf.
+ * \param header_buf The audio file header.
+ * \param header_len The number of bytes of \a header_buf.
+ *
+ * On errors, the client is shut down. If only a part of the buffer could be
+ * written, the remainder is put into the chunk queue for that client.
+ */
+static void http_send_chunk(struct sender_client *sc, struct sender_status *ss,
+ long unsigned current_chunk, const char *buf, size_t len,
+ const char *header_buf, size_t header_len)
+{
+ int ret;
+
+ if (!sc->header_sent && current_chunk) {
+ if (header_buf && header_len > 0) {
+ ret = queue_chunk_or_shutdown(sc, ss, header_buf, header_len);
+ if (ret < 0)
+ goto out;
+ }
+ }
+ sc->header_sent = 1;
+ ret = send_queued_chunks(sc->fd, sc->cq);
+ if (ret < 0) {
+ shutdown_client(sc, ss);
+ goto out;
+ }
+ if (!len)
+ goto out;
+ if (!ret) { /* still data left in the queue */
+ ret = queue_chunk_or_shutdown(sc, ss, buf, len);
+ goto out;
+ }
+ ret = xwrite(sc->fd, buf, len);
+ if (ret < 0) {
+ shutdown_client(sc, ss);
+ goto out;
+ }
+ if (ret != len)
+ ret = queue_chunk_or_shutdown(sc, ss, buf + ret, len - ret);
+out:
+ if (ret < 0)
+ PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
+}
+
static void http_send(long unsigned current_chunk,
__a_unused long unsigned chunks_sent, const char *buf, size_t len,
const char *header_buf, size_t header_len)
struct private_http_sender_data *phsd = sc->private_data;
if (phsd->status == HTTP_STREAMING)
- send_chunk(sc, hss, current_chunk, buf, len,
+ http_send_chunk(sc, hss, current_chunk, buf, len,
header_buf, header_len);
}
}
static void http_pre_select(int *max_fileno, fd_set *rfds, fd_set *wfds)
{
struct sender_client *sc, *tmp;
+ unsigned n;
- if (hss->listen_fd < 0)
- return;
- para_fd_set(hss->listen_fd, rfds, max_fileno);
+ FOR_EACH_LISTEN_FD(n, hss) {
+ if (hss->listen_fds[n] < 0)
+ continue;
+ para_fd_set(hss->listen_fds[n], rfds, max_fileno);
+ }
list_for_each_entry_safe(sc, tmp, &hss->client_list, node) {
struct private_http_sender_data *phsd = sc->private_data;
if (phsd->status == HTTP_CONNECTED) /* need to recv get request */
static int http_com_on(__a_unused struct sender_command_data *scd)
{
- return generic_com_on(hss, IPPROTO_TCP);
+ generic_com_on(hss, IPPROTO_TCP);
+ return 1;
}
static int http_com_off(__a_unused struct sender_command_data *scd)
return 1;
}
-static char *http_info(void)
+static char *http_status(void)
{
- return get_sender_info(hss, "http");
+ return generic_sender_status(hss, "http");
}
-/**
- * The init function of the http sender.
- *
- * \param s Pointer to the http sender struct.
- *
- * It initializes all function pointers of \a s, the client list and the access
- * control list. If the autostart option was given, the tcp port is opened.
+/*
+ * Initialize the client list and the access control list, and optionally
+ * listen on the tcp port.
*/
-void http_send_init(struct sender *s)
+static void http_send_init(void)
{
- int ret;
- s->info = http_info;
- s->send = http_send;
- s->pre_select = http_pre_select;
- s->post_select = http_post_select;
- s->shutdown_clients = http_shutdown_clients;
- s->help = generic_sender_help;
- s->client_cmds[SENDER_ON] = http_com_on;
- s->client_cmds[SENDER_OFF] = http_com_off;
- s->client_cmds[SENDER_DENY] = http_com_deny;
- s->client_cmds[SENDER_ALLOW] = http_com_allow;
- s->client_cmds[SENDER_ADD] = NULL;
- s->client_cmds[SENDER_DELETE] = NULL;
-
- init_sender_status(hss, conf.http_access_arg, conf.http_access_given,
- conf.http_port_arg, conf.http_max_clients_arg,
- conf.http_default_deny_given);
- if (conf.http_no_autostart_given)
+ init_sender_status(hss, OPT_RESULT(HTTP_ACCESS),
+ OPT_RESULT(HTTP_LISTEN_ADDRESS),
+ OPT_UINT32_VAL(HTTP_PORT), OPT_UINT32_VAL(HTTP_MAX_CLIENTS),
+ OPT_GIVEN(HTTP_DEFAULT_DENY));
+ if (OPT_GIVEN(HTTP_NO_AUTOSTART))
return;
- ret = generic_com_on(hss, IPPROTO_TCP);
- if (ret < 0)
- PARA_ERROR_LOG("%s\n", para_strerror(-ret));
+ generic_com_on(hss, IPPROTO_TCP);
}
+
+/**
+ * The HTTP sender.
+ *
+ * This is the only sender which does not FEC-encode the stream. This is not
+ * necessary because HTTP sits on top of TCP, a reliable transport which
+ * retransmits lost packets automatically. The sender employs per-client queues
+ * which queue chunks of audio data if they can not be sent immediately because
+ * the write operation would block. Most methods of the sender are implemented
+ * as wrappers for the generic functions defined in \ref send_common.c.
+ */
+const struct sender http_sender = {
+ .name = "http",
+ .init = http_send_init,
+ .shutdown = http_shutdown,
+ .pre_select = http_pre_select,
+ .post_select = http_post_select,
+ .send = http_send,
+ .shutdown_clients = http_shutdown_clients,
+ .client_cmds = {
+ [SENDER_on] = http_com_on,
+ [SENDER_off] = http_com_off,
+ [SENDER_deny] = http_com_deny,
+ [SENDER_allow] = http_com_allow,
+ },
+ .help = generic_sender_help,
+ .status = http_status,
+};
projects / paraslash.git / blobdiff