Merge branch 'master' of ssh://git.indexdata.com/home/git/pub/pazpar2
[pazpar2-moved-to-github.git] / src / connection.c
index f2b48e4..2b1c3d3 100644 (file)
@@ -1,5 +1,5 @@
 /* This file is part of Pazpar2.
-   Copyright (C) 2006-2008 Index Data
+   Copyright (C) 2006-2009 Index Data
 
 Pazpar2 is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
@@ -34,19 +34,8 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#if HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
-#ifdef WIN32
-#include <winsock.h>
-typedef int socklen_t;
-#endif
-#if HAVE_NETDB_H
-#include <netdb.h>
-#endif
 
 #include <signal.h>
-#include <ctype.h>
 #include <assert.h>
 
 #include <yaz/log.h>
@@ -71,7 +60,6 @@ struct connection {
     struct client *client;
     char *ibuf;
     int ibufsize;
-    char *authentication; // Empty string or authentication string if set
     char *zproxy;
     enum {
         Conn_Resolving,
@@ -83,18 +71,20 @@ struct connection {
 
 static struct connection *connection_freelist = 0;
 
+static int connection_connect(struct connection *con);
+
 static int connection_is_idle(struct connection *co)
 {
     ZOOM_connection link = co->link;
-    int event = ZOOM_connection_peek_event(link);
+    int event;
 
-    if (co->state != Conn_Open)
+    if (co->state != Conn_Open || !link)
         return 0;
 
-    link = co->link;
+    if (!ZOOM_connection_is_idle(link))
+        return 0;
     event = ZOOM_connection_peek_event(link);
-    if (event == ZOOM_EVENT_NONE ||
-                event == ZOOM_EVENT_END)
+    if (event == ZOOM_EVENT_NONE || event == ZOOM_EVENT_END)
         return 1;
     else
         return 0;
@@ -133,12 +123,6 @@ static void remove_connection_from_host(struct connection *con)
     assert(*conp == 0);
 }
 
-void connection_continue(struct connection *co)
-{
-    yaz_log(YLOG_LOG, "connection_continue");
-    iochan_setevent(co->iochan, EVENT_OUTPUT);
-}
-
 // Close connection and recycle structure
 void connection_destroy(struct connection *co)
 {
@@ -165,7 +149,7 @@ void connection_destroy(struct connection *co)
 
 // Creates a new connection for client, associated with the host of 
 // client's database
-struct connection *connection_create(struct client *cl)
+static struct connection *connection_create(struct client *cl)
 {
     struct connection *new;
     struct host *host = client_get_host(cl);
@@ -182,7 +166,6 @@ struct connection *connection_create(struct client *cl)
     new->next = new->host->connections;
     new->host->connections = new;
     new->client = cl;
-    new->authentication = "";
     new->zproxy = 0;
     client_set_connection(cl, new);
     new->link = 0;
@@ -193,9 +176,71 @@ struct connection *connection_create(struct client *cl)
     return new;
 }
 
-static void connection_handler(IOCHAN i, int event)
+static void non_block_events(struct connection *co)
+{
+    struct client *cl = co->client;
+    IOCHAN iochan = co->iochan;
+    ZOOM_connection link = co->link;
+    while (1)
+    {
+        int ev;
+        int r = ZOOM_event_nonblock(1, &link);
+        if (!r)
+            break;
+        ev = ZOOM_connection_last_event(link);
+#if 0
+        yaz_log(YLOG_LOG, "ZOOM_EVENT_%s", ZOOM_get_event_str(ev));
+#endif
+        switch (ev) 
+        {
+        case ZOOM_EVENT_END:
+            {
+                const char *error, *addinfo;
+                if (ZOOM_connection_error(link, &error, &addinfo))
+                {
+                    yaz_log(YLOG_LOG, "Error %s from %s",
+                            error, client_get_url(cl));
+                }
+                client_set_state(cl, Client_Idle);
+            }
+            break;
+        case ZOOM_EVENT_SEND_DATA:
+            break;
+        case ZOOM_EVENT_RECV_DATA:
+            break;
+        case ZOOM_EVENT_UNKNOWN:
+            break;
+        case ZOOM_EVENT_SEND_APDU:
+            client_set_state(co->client, Client_Working);
+            break;
+        case ZOOM_EVENT_RECV_APDU:
+            break;
+        case ZOOM_EVENT_CONNECT:
+            yaz_log(YLOG_LOG, "Connected to %s", client_get_url(cl));
+            co->state = Conn_Open;
+            iochan_settimeout(iochan, global_parameters.z3950_session_timeout);
+            break;
+        case ZOOM_EVENT_RECV_SEARCH:
+            client_search_response(cl);
+            break;
+        case ZOOM_EVENT_RECV_RECORD:
+            client_record_response(cl);
+            break;
+        default:
+            yaz_log(YLOG_LOG, "Unhandled event (%d) from %s",
+                    ev, client_get_url(cl));
+        }
+    }
+}
+
+void connection_continue(struct connection *co)
+{
+    non_block_events(co);
+}
+
+static void connection_handler(IOCHAN iochan, int event)
 {
-    struct connection *co = iochan_getdata(i);
+    struct connection *co = iochan_getdata(iochan);
     struct client *cl = co->client;
     struct session *se = 0;
 
@@ -219,54 +264,14 @@ static void connection_handler(IOCHAN i, int event)
             yaz_log(YLOG_LOG,  "idle timeout %s", client_get_url(cl));
             connection_destroy(co);
         }
-        return;
     }
     else
     {
-        ZOOM_connection link = co->link;
+        non_block_events(co);
 
-        if (ZOOM_event(1, &link))
-        {
-            do
-            {
-                int event = ZOOM_connection_last_event(link);
-                switch (event) 
-                {
-                case ZOOM_EVENT_END:
-                    break;
-                case ZOOM_EVENT_SEND_DATA:
-                    break;
-                case ZOOM_EVENT_RECV_DATA:
-                    break;
-                case ZOOM_EVENT_UNKNOWN:
-                    break;
-                case ZOOM_EVENT_SEND_APDU:
-                    client_set_state(co->client, Client_Working);
-                    break;
-                case ZOOM_EVENT_RECV_APDU:
-                    client_set_state(co->client, Client_Idle);
-                    break;
-                case ZOOM_EVENT_CONNECT:
-                    yaz_log(YLOG_LOG, "Connected to %s", client_get_url(cl));
-                    co->state = Conn_Open;
-                    client_set_state(co->client, Client_Connected);
-                    iochan_settimeout(i, global_parameters.z3950_session_timeout);
-                    break;
-                case ZOOM_EVENT_RECV_SEARCH:
-                    yaz_log(YLOG_LOG, "Search response from %s", client_get_url(cl));
-                    client_search_response(cl);
-                    break;
-                case ZOOM_EVENT_RECV_RECORD:
-                    yaz_log(YLOG_LOG, "Record from %s", client_get_url(cl));
-                    client_record_response(cl);
-                    break;
-                default:
-                    yaz_log(YLOG_LOG, "Unhandled event (%d) from %s",
-                            event, client_get_url(cl));
-                }
-            }
-            while (ZOOM_event_nonblock(1, &link));
-        }
+        ZOOM_connection_fire_event_socket(co->link, event);
+        
+        non_block_events(co);
     }
 }
 
@@ -318,7 +323,7 @@ void connect_resolver_host(struct host *host)
     }
 }
 
-struct host *connection_get_host(struct connection *con)
+static struct host *connection_get_host(struct connection *con)
 {
     return con->host;
 }
@@ -345,7 +350,7 @@ static int maskfun(IOCHAN c)
     return ZOOM_connection_get_mask(co->link);
 }
 
-int connection_connect(struct connection *con)
+static int connection_connect(struct connection *con)
 {
     ZOOM_connection link = 0;
     struct host *host = connection_get_host(con);
@@ -393,16 +398,7 @@ int connection_connect(struct connection *con)
     if (sru && *sru)
         strcpy(ipport, "http://");
     strcat(ipport, host->ipport);
-    /* deal with SRU path here because databaseName option is not read in
-       ZOOM in SRU mode */
-    if (sru && *sru)
-    {
-        if (*sdb->database->databases[0])
-        {
-            strcat(ipport, "/");
-            strcat(ipport, sdb->database->databases[0]);
-        }
-    }
+
     ZOOM_connection_connect(link, ipport, 0);
     
     con->link = link;
@@ -427,11 +423,6 @@ const char *connection_get_url(struct connection *co)
     return client_get_url(co->client);
 }
 
-void connection_set_authentication(struct connection *co, char *auth)
-{
-    co->authentication = auth;
-}
-
 // Ensure that client has a connection associated
 int client_prep_connection(struct client *cl)
 {
@@ -455,9 +446,9 @@ int client_prep_connection(struct client *cl)
         for (co = host->connections; co; co = co->next)
             if (connection_is_idle(co) &&
                 (!co->client || client_get_session(co->client) != se) &&
-                !strcmp(co->authentication,
-                    session_setting_oneval(client_get_database(cl),
-                    PZ_AUTHENTICATION)))
+                !strcmp(ZOOM_connection_option_get(co->link, "user"),
+                        session_setting_oneval(client_get_database(cl),
+                                               PZ_AUTHENTICATION)))
             {
                 if (zproxy == 0 && co->zproxy == 0)
                     break;
@@ -469,9 +460,14 @@ int client_prep_connection(struct client *cl)
             connection_release(co);
             client_set_connection(cl, co);
             co->client = cl;
+            /* tells ZOOM to reconnect if necessary. Disabled becuase
+               the ZOOM_connection_connect flushes the task queue */
+            ZOOM_connection_connect(co->link, 0, 0);
         }
         else
+        {
             co = connection_create(cl);
+        }
     }
 
     if (co && co->link)
@@ -480,17 +476,12 @@ int client_prep_connection(struct client *cl)
         return 0;
 }
 
-// DELETEME
-
-
-int connection_send_apdu(struct connection *co, Z_APDU *a){return 10;}
-
-
-
 /*
  * Local variables:
  * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
  * indent-tabs-mode: nil
  * End:
  * vim: shiftwidth=4 tabstop=8 expandtab
  */
+