make various responses going back to the client be done via the file serving thread

svn path=/icecast/trunk/icecast/; revision=9740

src/client.c

@@ -32,6 +32,7 @@
 #include "refbuf.h"
 #include "format.h"
 #include "stats.h"
+#include "fserve.h"
 
 #include "client.h"
 #include "logging.h"
@@ -143,46 +144,36 @@ int client_read_bytes (client_t *client, void *buf, unsigned len)
 
 
 void client_send_400(client_t *client, char *message) {
-    int bytes;
-    bytes = sock_write(client->con->sock, "HTTP/1.0 400 Bad Request\r\n"
+    snprintf (client->refbuf->data, PER_CLIENT_REFBUF_SIZE,
+            "HTTP/1.0 400 Bad Request\r\n"
             "Content-Type: text/html\r\n\r\n"
             "<b>%s</b>\r\n", message);
-    if(bytes > 0) client->con->sent_bytes = bytes;
     client->respcode = 400;
-    client_destroy(client);
+    client->refbuf->len = strlen (client->refbuf->data);
+    fserve_add_client (client, NULL);
 }
 
 void client_send_404(client_t *client, char *message) {
 
-    int bytes;
-    bytes = sock_write(client->con->sock, "HTTP/1.0 404 File Not Found\r\n"
+    snprintf (client->refbuf->data, PER_CLIENT_REFBUF_SIZE,
+            "HTTP/1.0 404 File Not Found\r\n"
             "Content-Type: text/html\r\n\r\n"
             "<b>%s</b>\r\n", message);
-    if(bytes > 0) client->con->sent_bytes = bytes;
     client->respcode = 404;
-    client_destroy(client);
+    client->refbuf->len = strlen (client->refbuf->data);
+    fserve_add_client (client, NULL);
 }
 
-void client_send_504(client_t *client, char *message) {
-    int bytes;
-    client->respcode = 504;
-    bytes = sock_write(client->con->sock, 
-            "HTTP/1.0 504 Server Full\r\n"
-            "Content-Type: text/html\r\n\r\n"
-            "<b>%s</b>\r\n", message);
-       if (bytes > 0) client->con->sent_bytes = bytes;
-    client_destroy(client);
-}
 
 void client_send_401(client_t *client) {
-    int bytes = sock_write(client->con->sock, 
+    snprintf (client->refbuf->data, PER_CLIENT_REFBUF_SIZE,
             "HTTP/1.0 401 Authentication Required\r\n"
             "WWW-Authenticate: Basic realm=\"Icecast2 Server\"\r\n"
             "\r\n"
             "You need to authenticate\r\n");
-    if(bytes > 0) client->con->sent_bytes = bytes;
     client->respcode = 401;
-    client_destroy(client);
+    client->refbuf->len = strlen (client->refbuf->data);
+    fserve_add_client (client, NULL);
 }
 
 void client_send_403(client_t *client) {

src/connection.c

@@ -764,8 +764,13 @@ static void _handle_source_request (client_t *client, char *uri, int auth_style)
             source_free_source (source);
         }
         else
-            thread_create ("Source Thread", source_client_thread,
-                    source, THREAD_DETACHED);
+        {
+            client->respcode = 200;
+            snprintf (client->refbuf->data, PER_CLIENT_REFBUF_SIZE,
+                    "HTTP/1.0 200 OK\r\n\r\n");
+            client->refbuf->len = strlen (client->refbuf->data);
+            fserve_add_client_callback (client, source_client_callback, source);
+        }
     }
     else
     {
@@ -787,14 +792,10 @@ static void _handle_stats_request (client_t *client, char *uri)
     }
 
     client->respcode = 200;
-    if (sock_write (client->con->sock, "HTTP/1.0 200 OK\r\n\r\n") < 19)
-    {
-        client_destroy (client);
-        ERROR0 ("failed to write header");
-        return;
-    }
-
-    thread_create("Stats Connection", stats_connection, (void *)client, THREAD_DETACHED);
+    snprintf (client->refbuf->data, PER_CLIENT_REFBUF_SIZE,
+            "HTTP/1.0 200 OK\r\n\r\n");
+    client->refbuf->len = strlen (client->refbuf->data);
+    fserve_add_client_callback (client, stats_callback, NULL);
 }
 
 static void _handle_get_request (client_t *client, char *passed_uri)

src/fserve.c

@@ -352,8 +352,11 @@ static void fserve_client_destroy(fserve_t *fclient)
         if (fclient->file)
             fclose (fclient->file);
 
-        if (fclient->client)
-            client_destroy (fclient->client);
+        if (fclient->callback)
+            fclient->callback (fclient->client, fclient->arg);
+        else
+            if (fclient->client)
+                client_destroy (fclient->client);
         free (fclient);
     }
 }
@@ -396,8 +399,7 @@ int fserve_client_create (client_t *httpclient, const char *path)
         m3u_file_available = 0;
     }
 
-    client_set_queue (httpclient, NULL);
-    httpclient->refbuf = refbuf_new (BUFSIZE);
+    httpclient->refbuf->len = PER_CLIENT_REFBUF_SIZE;
 
     if (m3u_requested && m3u_file_available == 0)
     {
@@ -580,6 +582,32 @@ int fserve_add_client (client_t *client, FILE *file)
 }
 
 
+/* add client to file serving engine, but just write out the buffer contents,
+ * then pass the client to the callback with the provided arg
+ */
+void fserve_add_client_callback (client_t *client, fserve_callback_t callback, void *arg)
+{
+    fserve_t *fclient = calloc (1, sizeof(fserve_t));
+
+    DEBUG0 ("Adding client to file serving engine");
+    if (fclient == NULL)
+    {
+        client_send_404 (client, "memory exhausted");
+        return;
+    }
+    fclient->file = NULL;
+    fclient->client = client;
+    fclient->ready = 0;
+    fclient->callback = callback;
+    fclient->arg = arg;
+
+    thread_mutex_lock (&pending_lock);
+    fclient->next = (fserve_t *)pending_list;
+    pending_list = fclient;
+    thread_mutex_unlock (&pending_lock);
+}
+
+
 static int _delete_mapping(void *mapping) {
     mime_type *map = mapping;
     free(map->ext);

src/fserve.h

@@ -15,12 +15,16 @@
 
 #include <stdio.h>
 
+typedef void (*fserve_callback_t)(client_t *, void *);
+
 typedef struct _fserve_t
 {
     client_t *client;
 
     FILE *file;
     int ready;
+    void (*callback)(client_t *, void *);
+    void *arg;
     struct _fserve_t *next;
 } fserve_t;
 
@@ -28,6 +32,7 @@ void fserve_initialize(void);
 void fserve_shutdown(void);
 int fserve_client_create(client_t *httpclient, const char *path);
 int fserve_add_client (client_t *client, FILE *file);
+void fserve_add_client_callback (client_t *client, fserve_callback_t callback, void *arg);
 char *fserve_content_type (const char *path);
 
 

src/source.c

@@ -1184,28 +1184,6 @@ void *source_client_thread (void *arg)
 {
     source_t *source = arg;
 
-    if (source->client && source->client->con)
-    {
-        const char ok_msg[] = "HTTP/1.0 200 OK\r\n\r\n";
-        int bytes;
-        const char *agent;
-
-        source->client->respcode = 200;
-        bytes = sock_write_bytes (source->client->con->sock, ok_msg, sizeof (ok_msg)-1);
-        if (bytes < (int)(sizeof (ok_msg)-1))
-        {
-            global_lock();
-            global.sources--;
-            global_unlock();
-            WARN0 ("Error writing 200 OK message to source client");
-            source_free_source (source);
-            return NULL;
-        }
-        stats_event (source->mount, "source_ip", source->client->con->ip);
-        agent = httpp_getvar (source->client->parser, "user-agent");
-        if (agent)
-            stats_event (source->mount, "user_agent", agent);
-    }
     stats_event_inc(NULL, "source_client_connections");
     stats_event (source->mount, "listeners", "0");
 
@@ -1218,6 +1196,30 @@ void *source_client_thread (void *arg)
 }
 
 
+void source_client_callback (client_t *client, void *arg)
+{
+    const char *agent;
+    source_t *source = arg;
+
+    if (client->con->error)
+    {
+        global_lock();
+        global.sources--;
+        global_unlock();
+        source_free_source (source);
+        client_destroy (client);
+        return;
+    }
+    stats_event (source->mount, "source_ip", source->client->con->ip);
+    agent = httpp_getvar (source->client->parser, "user-agent");
+    if (agent)
+        stats_event (source->mount, "user_agent", agent);
+
+    thread_create ("Source Thread", source_client_thread,
+            source, THREAD_DETACHED);
+}
+
+
 #ifndef _WIN32
 static void source_run_script (char *command, char *mountpoint)
 {

src/source.h

@@ -78,6 +78,7 @@ typedef struct source_tag
 
 source_t *source_reserve (const char *mount);
 void *source_client_thread (void *arg);
+void source_client_callback (client_t *client, void *source);
 void source_update_settings (ice_config_t *config, source_t *source, mount_proxy *mountinfo);
 void source_clear_source (source_t *source);
 source_t *source_find_mount(const char *mount);

src/stats.c

@@ -59,17 +59,17 @@ typedef struct _event_listener_tag
     struct _event_listener_tag *next;
 } event_listener_t;
 
-volatile static int _stats_running = 0;
+static volatile int _stats_running = 0;
 static thread_type *_stats_thread_id;
-volatile static int _stats_threads = 0;
+static volatile int _stats_threads = 0;
 
 static stats_t _stats;
 static mutex_t _stats_mutex;
 
-volatile static stats_event_t *_global_event_queue;
+static volatile stats_event_t *_global_event_queue;
 mutex_t _global_event_mutex;
 
-volatile static event_listener_t *_event_listeners;
+static volatile event_listener_t *_event_listeners;
 
 
 static void *_stats_thread(void *arg);
@@ -842,6 +842,19 @@ void *stats_connection(void *arg)
     return NULL;
 }
 
+
+void stats_callback (client_t *client, void *notused)
+{
+    if (client->con->error)
+    {
+        client_destroy (client);
+        return;
+    }
+    client_set_queue (client, NULL);
+    thread_create("Stats Connection", stats_connection, (void *)client, THREAD_DETACHED);
+}
+
+
 typedef struct _source_xml_tag {
     char *mount;
     xmlNodePtr node;

src/stats.h

@@ -84,7 +84,7 @@ void stats_event_hidden (const char *source, const char *name, int hidden);
 void stats_event_time (const char *mount, const char *name);
 
 void *stats_connection(void *arg);
-void *stats_callback(void *arg);
+void stats_callback (client_t *client, void *notused);
 
 void stats_transform_xslt(client_t *client, const char *uri);
 void stats_sendxml(client_t *client);