afs: Document ->lpr of struct afs_callback_arg.
[paraslash.git] / http_send.c
index 828d99e..dace5c2 100644 (file)
@@ -1,27 +1,27 @@
-/*
- * 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 "server.h"
 #include "http.h"
-#include "vss.h"
 #include "list.h"
 #include "send.h"
+#include "sched.h"
+#include "vss.h"
 #include "close_on_fork.h"
 #include "net.h"
 #include "fd.h"
@@ -53,7 +53,7 @@ static struct sender_status http_sender_status, *hss = &http_sender_status;
 
 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);
@@ -77,6 +77,66 @@ static void http_shutdown_clients(void)
        shutdown_clients(hss);
 }
 
+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)
@@ -85,10 +145,10 @@ static void http_send(long unsigned current_chunk,
 
        list_for_each_entry_safe(sc, tmp, &hss->client_list, node) {
                struct private_http_sender_data *phsd = sc->private_data;
-               if (phsd->status != HTTP_STREAMING)
-                       continue;
-               send_chunk(sc, hss, 0, current_chunk, buf, len, header_buf,
-                       header_len);
+
+               if (phsd->status == HTTP_STREAMING)
+                       http_send_chunk(sc, hss, current_chunk, buf, len,
+                                  header_buf, header_len);
        }
 }
 
@@ -96,23 +156,20 @@ static void http_post_select(fd_set *rfds, __a_unused fd_set *wfds)
 {
        struct sender_client *sc, *tmp;
        struct private_http_sender_data *phsd;
+       int ret;
 
-       if (hss->listen_fd < 0)
-               return;
        list_for_each_entry_safe(sc, tmp, &hss->client_list, node) {
                phsd = sc->private_data;
                switch (phsd->status) {
                case HTTP_STREAMING: /* nothing to do */
                        break;
                case HTTP_CONNECTED: /* need to recv get request */
-                       if (FD_ISSET(sc->fd, rfds)) {
-                               if (recv_pattern(sc->fd, HTTP_GET_MSG, MAXLINE)
-                                               < 0) {
-                                       phsd->status = HTTP_INVALID_GET_REQUEST;
-                               } else {
-                                       phsd->status = HTTP_GOT_GET_REQUEST;
-                                       PARA_INFO_LOG("received get request\n");
-                               }
+                       ret = read_pattern(sc->fd, HTTP_GET_MSG, MAXLINE, rfds);
+                       if (ret < 0)
+                               phsd->status = HTTP_INVALID_GET_REQUEST;
+                       else if (ret > 0) {
+                               phsd->status = HTTP_GOT_GET_REQUEST;
+                               PARA_INFO_LOG("received get request\n");
                        }
                        break;
                case HTTP_GOT_GET_REQUEST: /* need to send ok msg */
@@ -125,9 +182,7 @@ static void http_post_select(fd_set *rfds, __a_unused fd_set *wfds)
                        break;
                }
        }
-       if (!FD_ISSET(hss->listen_fd, rfds))
-               return;
-       sc = accept_sender_client(hss);
+       sc = accept_sender_client(hss, rfds);
        if (!sc)
                return;
        phsd = para_malloc(sizeof(*phsd));
@@ -175,9 +230,9 @@ static int http_com_allow(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");
 }
 
 /**
@@ -191,23 +246,24 @@ static char *http_info(void)
 void http_send_init(struct sender *s)
 {
        int ret;
-       s->info = http_info;
+       s->status = http_status;
        s->send = http_send;
        s->pre_select = http_pre_select;
        s->post_select = http_post_select;
        s->shutdown_clients = http_shutdown_clients;
+       s->resolve_target = NULL;
        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)
+       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, OPT_RESULT(HTTP_ACCESS),
+               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)