Generate wiki diffs using a temp file instead of a big string of realloc() calls.
[citadel.git] / citadel / serv_extensions.c
index 54eaecd536a4233921a9ca72cefd15ad9b0be69f..76dbacb4a028ebe476ceda0e6abab84ddf09088a 100644 (file)
@@ -1,6 +1,22 @@
 /*
  * Citadel Dynamic Loading Module
  * Written by Brian Costello <btx@calyx.net>
+ *
+ * Copyright (c) 1987-2011 by the citadel.org team
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
 #include "sysdep.h"
@@ -12,6 +28,7 @@
 #include <string.h>
 #include <limits.h>
 #include <ctype.h>
+#include <syslog.h>
 #include <libcitadel.h>
 #include "citadel.h"
 #include "server.h"
@@ -109,8 +126,8 @@ void LogPrintMessages(long err)
 
        snprintf(Message, n * SIZ, ErrGeneral, Short, Where, List, Hint, DetailList);
 
-       CtdlLogPrintf(0,Message);
-       CtdlLogPrintf(0,ErrSubject);
+       syslog(LOG_EMERG, "%s", Message);
+       syslog(LOG_EMERG, "%s", ErrSubject);
        quickie_message("Citadel", NULL, NULL, AIDEROOM, Message, FMT_FIXED, ErrSubject);
        if (errormessages!=NULL) free (errormessages);
        errormessages = NULL;
@@ -189,7 +206,7 @@ int DLoader_Exec_Cmd(char *cmdbuf)
        return 0;
 }
 
-int FourHash(const char *key, long length) 
+long FourHash(const char *key, long length) 
 {
        int i;
        int ret = 0;
@@ -225,7 +242,7 @@ void CtdlRegisterProtoHook(void (*handler) (char *), char *cmd, char *desc)
        p->desc = desc;
 
        Put(ProtoHookList, cmd, 4, p, NULL);
-       CtdlLogPrintf(CTDL_INFO, "Registered server command %s (%s)\n", cmd, desc);
+       syslog(LOG_INFO, "Registered server command %s (%s)\n", cmd, desc);
 }
 
 void CtdlDestroyProtoHooks(void)
@@ -246,7 +263,7 @@ void CtdlRegisterCleanupHook(void (*fcn_ptr) (void))
        newfcn->h_function_pointer = fcn_ptr;
        CleanupHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new cleanup function\n");
+       syslog(LOG_INFO, "Registered a new cleanup function\n");
 }
 
 
@@ -258,7 +275,7 @@ void CtdlUnregisterCleanupHook(void (*fcn_ptr) (void))
                /* This will also remove duplicates if any */
                while (cur != NULL &&
                                fcn_ptr == cur->h_function_pointer) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered cleanup function\n");
+                       syslog(LOG_INFO, "Unregistered cleanup function\n");
                        p = cur->next;
                        if (cur == CleanupHookTable) {
                                CleanupHookTable = p;
@@ -276,7 +293,7 @@ void CtdlDestroyCleanupHooks(void)
        cur = CleanupHookTable;
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed cleanup function\n");
+               syslog(LOG_INFO, "Destroyed cleanup function\n");
                p = cur->next;
                free(cur);
                cur = p;
@@ -297,7 +314,7 @@ void CtdlRegisterSessionHook(void (*fcn_ptr) (void), int EventType)
        newfcn->eventtype = EventType;
        SessionHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new session function (type %d)\n",
+       syslog(LOG_INFO, "Registered a new session function (type %d)\n",
                EventType);
 }
 
@@ -311,7 +328,7 @@ void CtdlUnregisterSessionHook(void (*fcn_ptr) (void), int EventType)
                while (cur != NULL &&
                                fcn_ptr == cur->h_function_pointer &&
                                EventType == cur->eventtype) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered session function (type %d)\n",
+                       syslog(LOG_INFO, "Unregistered session function (type %d)\n",
                                        EventType);
                        p = cur->next;
                        if (cur == SessionHookTable) {
@@ -330,7 +347,7 @@ void CtdlDestroySessionHooks(void)
        cur = SessionHookTable;
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed session function\n");
+               syslog(LOG_INFO, "Destroyed session function\n");
                p = cur->next;
                free(cur);
                cur = p;
@@ -351,7 +368,7 @@ void CtdlRegisterUserHook(void (*fcn_ptr) (struct ctdluser *), int EventType)
        newfcn->eventtype = EventType;
        UserHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new user function (type %d)\n",
+       syslog(LOG_INFO, "Registered a new user function (type %d)\n",
                EventType);
 }
 
@@ -365,7 +382,7 @@ void CtdlUnregisterUserHook(void (*fcn_ptr) (struct ctdluser *), int EventType)
                while (cur != NULL &&
                                fcn_ptr == cur->h_function_pointer &&
                                EventType == cur->eventtype) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered user function (type %d)\n",
+                       syslog(LOG_INFO, "Unregistered user function (type %d)\n",
                                        EventType);
                        p = cur->next;
                        if (cur == UserHookTable) {
@@ -384,7 +401,7 @@ void CtdlDestroyUserHooks(void)
        cur = UserHookTable;
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed user function \n");
+               syslog(LOG_INFO, "Destroyed user function \n");
                p = cur->next;
                free(cur);
                cur = p;
@@ -406,7 +423,7 @@ void CtdlRegisterMessageHook(int (*handler)(struct CtdlMessage *),
        newfcn->eventtype = EventType;
        MessageHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new message function (type %d)\n",
+       syslog(LOG_INFO, "Registered a new message function (type %d)\n",
                EventType);
 }
 
@@ -421,7 +438,7 @@ void CtdlUnregisterMessageHook(int (*handler)(struct CtdlMessage *),
                while (cur != NULL &&
                                handler == cur->h_function_pointer &&
                                EventType == cur->eventtype) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered message function (type %d)\n",
+                       syslog(LOG_INFO, "Unregistered message function (type %d)\n",
                                        EventType);
                        p = cur->next;
                        if (cur == MessageHookTable) {
@@ -440,7 +457,7 @@ void CtdlDestroyMessageHook(void)
        cur = MessageHookTable; 
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed message function (type %d)\n", cur->eventtype);
+               syslog(LOG_INFO, "Destroyed message function (type %d)\n", cur->eventtype);
                p = cur->next;
                free(cur);
                cur = p;
@@ -459,7 +476,7 @@ void CtdlRegisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
        newfcn->fcn_ptr = fcn_ptr;
        RoomHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new room function\n");
+       syslog(LOG_INFO, "Registered a new room function\n");
 }
 
 
@@ -469,7 +486,7 @@ void CtdlUnregisterRoomHook(int (*fcn_ptr)(struct ctdlroom *))
 
        for (cur = RoomHookTable; cur != NULL; cur = cur->next) {
                while (cur != NULL && fcn_ptr == cur->fcn_ptr) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered room function\n");
+                       syslog(LOG_INFO, "Unregistered room function\n");
                        p = cur->next;
                        if (cur == RoomHookTable) {
                                RoomHookTable = p;
@@ -488,7 +505,7 @@ void CtdlDestroyRoomHooks(void)
        cur = RoomHookTable;
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed room function\n");
+               syslog(LOG_INFO, "Destroyed room function\n");
                p = cur->next;
                free(cur);
                cur = p;
@@ -506,7 +523,7 @@ void CtdlRegisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
        newfcn->h_function_pointer = handler;
        NetprocHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new netproc function\n");
+       syslog(LOG_INFO, "Registered a new netproc function\n");
 }
 
 
@@ -518,7 +535,7 @@ void CtdlUnregisterNetprocHook(int (*handler)(struct CtdlMessage *, char *) )
                /* This will also remove duplicates if any */
                while (cur != NULL &&
                                handler == cur->h_function_pointer ) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered netproc function\n");
+                       syslog(LOG_INFO, "Unregistered netproc function\n");
                        p = cur->next;
                        if (cur == NetprocHookTable) {
                                NetprocHookTable = p;
@@ -536,7 +553,7 @@ void CtdlDestroyNetprocHooks(void)
        cur = NetprocHookTable;
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed netproc function\n");
+               syslog(LOG_INFO, "Destroyed netproc function\n");
                p = cur->next;
                free(cur);
                cur = p;
@@ -555,7 +572,7 @@ void CtdlRegisterDeleteHook(void (*handler)(char *, long) )
        newfcn->h_function_pointer = handler;
        DeleteHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new delete function\n");
+       syslog(LOG_INFO, "Registered a new delete function\n");
 }
 
 
@@ -567,7 +584,7 @@ void CtdlUnregisterDeleteHook(void (*handler)(char *, long) )
                /* This will also remove duplicates if any */
                while (cur != NULL &&
                                handler == cur->h_function_pointer ) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered delete function\n");
+                       syslog(LOG_INFO, "Unregistered delete function\n");
                        p = cur->next;
                        if (cur == DeleteHookTable) {
                                DeleteHookTable = p;
@@ -584,7 +601,7 @@ void CtdlDestroyDeleteHooks(void)
        cur = DeleteHookTable;
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed delete function\n");
+               syslog(LOG_INFO, "Destroyed delete function\n");
                p = cur->next;
                free(cur);
                cur = p;                
@@ -606,7 +623,7 @@ void CtdlRegisterFixedOutputHook(char *content_type, void (*handler)(char *, int
        safestrncpy(newfcn->content_type, content_type, sizeof newfcn->content_type);
        FixedOutputTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new fixed output function for %s\n", newfcn->content_type);
+       syslog(LOG_INFO, "Registered a new fixed output function for %s\n", newfcn->content_type);
 }
 
 
@@ -617,7 +634,7 @@ void CtdlUnregisterFixedOutputHook(char *content_type)
        for (cur = FixedOutputTable; cur != NULL; cur = cur->next) {
                /* This will also remove duplicates if any */
                while (cur != NULL && (!strcasecmp(content_type, cur->content_type))) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered fixed output function for %s\n", content_type);
+                       syslog(LOG_INFO, "Unregistered fixed output function for %s\n", content_type);
                        p = cur->next;
                        if (cur == FixedOutputTable) {
                                FixedOutputTable = p;
@@ -635,7 +652,7 @@ void CtdlDestroyFixedOutputHooks(void)
        cur = FixedOutputTable; 
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed fixed output function for %s\n", cur->content_type);
+               syslog(LOG_INFO, "Destroyed fixed output function for %s\n", cur->content_type);
                p = cur->next;
                free(cur);
                cur = p;
@@ -672,7 +689,7 @@ void CtdlRegisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int o
        newfcn->order = order;
        newfcn->h_function_pointer = fcn_ptr;
        XmsgHookTable = newfcn;
-       CtdlLogPrintf(CTDL_INFO, "Registered a new x-msg function (priority %d)\n", order);
+       syslog(LOG_INFO, "Registered a new x-msg function (priority %d)\n", order);
 }
 
 
@@ -685,7 +702,7 @@ void CtdlUnregisterXmsgHook(int (*fcn_ptr) (char *, char *, char *, char *), int
                while (cur != NULL &&
                                fcn_ptr == cur->h_function_pointer &&
                                order == cur->order) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered x-msg function "
+                       syslog(LOG_INFO, "Unregistered x-msg function "
                                        "(priority %d)\n", order);
                        p = cur->next;
                        if (cur == XmsgHookTable) {
@@ -704,7 +721,7 @@ void CtdlDestroyXmsgHooks(void)
        cur = XmsgHookTable;
        while (cur != NULL)
        {
-               CtdlLogPrintf(CTDL_INFO, "Destroyed x-msg function "
+               syslog(LOG_INFO, "Destroyed x-msg function "
                        "(priority %d)\n", cur->order);
                p = cur->next;
                        
@@ -743,7 +760,7 @@ void CtdlRegisterServiceHook(int tcp_port,
                snprintf(message, SIZ, "Unix domain socket '%s': ", sockpath);
        }
        else if (tcp_port <= 0) {       /* port -1 to disable */
-               CtdlLogPrintf(CTDL_INFO, "Service %s has been manually disabled, skipping\n", ServiceName);
+               syslog(LOG_INFO, "Service %s has been manually disabled, skipping\n", ServiceName);
                free (message);
                free(newfcn);
                return;
@@ -760,13 +777,12 @@ void CtdlRegisterServiceHook(int tcp_port,
        if (newfcn->msock > 0) {
                ServiceHookTable = newfcn;
                strcat(message, "registered.");
-               CtdlLogPrintf(CTDL_INFO, "%s\n", message);
+               syslog(LOG_INFO, "%s\n", message);
        }
        else {
                AddPortError(message, error);
                strcat(message, "FAILED.");
-               CtdlLogPrintf(CTDL_CRIT, "%s\n", message);
-               free(error);
+               syslog(LOG_CRIT, "%s\n", message);
                free(newfcn);
        }
        free(message);
@@ -793,12 +809,12 @@ void CtdlUnregisterServiceHook(int tcp_port, char *sockpath,
                                tcp_port == cur->tcp_port) {
                        close(cur->msock);
                        if (sockpath) {
-                               CtdlLogPrintf(CTDL_INFO, "Closed UNIX domain socket %s\n",
+                               syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
                                                sockpath);
                        } else if (tcp_port) {
-                               CtdlLogPrintf(CTDL_INFO, "Closed TCP port %d\n", tcp_port);
+                               syslog(LOG_INFO, "Closed TCP port %d\n", tcp_port);
                        } else {
-                               CtdlLogPrintf(CTDL_INFO, "Unregistered service \"%s\"\n", cur->ServiceName);
+                               syslog(LOG_INFO, "Unregistered service \"%s\"\n", cur->ServiceName);
                        }
                        p = cur->next;
                        if (cur == ServiceHookTable) {
@@ -824,11 +840,11 @@ void CtdlShutdownServiceHooks(void)
                        close(cur->msock);
                        cur->msock = -1;
                        if (cur->sockpath != NULL){
-                               CtdlLogPrintf(CTDL_INFO, "[%s] Closed UNIX domain socket %s\n",
+                               syslog(LOG_INFO, "[%s] Closed UNIX domain socket %s\n",
                                              cur->ServiceName,
                                              cur->sockpath);
                        } else {
-                               CtdlLogPrintf(CTDL_INFO, "[%s] closing service\n", 
+                               syslog(LOG_INFO, "[%s] closing service\n", 
                                              cur->ServiceName);
                        }
                }
@@ -845,12 +861,12 @@ void CtdlDestroyServiceHook(void)
        {
                close(cur->msock);
                if (cur->sockpath) {
-                       CtdlLogPrintf(CTDL_INFO, "Closed UNIX domain socket %s\n",
+                       syslog(LOG_INFO, "Closed UNIX domain socket %s\n",
                                cur->sockpath);
                } else if (cur->tcp_port) {
-                       CtdlLogPrintf(CTDL_INFO, "Closed TCP port %d\n", cur->tcp_port);
+                       syslog(LOG_INFO, "Closed TCP port %d\n", cur->tcp_port);
                } else {
-                       CtdlLogPrintf(CTDL_INFO, "Destroyed service \"%s\"\n", cur->ServiceName);
+                       syslog(LOG_INFO, "Destroyed service \"%s\"\n", cur->ServiceName);
                }
                p = cur->next;
                free(cur);
@@ -874,7 +890,7 @@ void CtdlRegisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), c
        newfcn->fcn_ptr = fcn_ptr;
        SearchFunctionHookTable = newfcn;
 
-       CtdlLogPrintf(CTDL_INFO, "Registered a new search function (%s)\n", name);
+       syslog(LOG_INFO, "Registered a new search function (%s)\n", name);
 }
 
 void CtdlUnregisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *), char *name)
@@ -883,7 +899,7 @@ void CtdlUnregisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *),
        
        for (cur = SearchFunctionHookTable; cur != NULL; cur = cur->next) {
                while (fcn_ptr && (cur->fcn_ptr == fcn_ptr) && name && !strcmp(name, cur->name)) {
-                       CtdlLogPrintf(CTDL_INFO, "Unregistered search function(%s)\n", name);
+                       syslog(LOG_INFO, "Unregistered search function(%s)\n", name);
                        p = cur->next;
                        if (cur == SearchFunctionHookTable) {
                                SearchFunctionHookTable = p;
@@ -894,6 +910,19 @@ void CtdlUnregisterSearchFuncHook(void (*fcn_ptr)(int *, long **, const char *),
        }
 }
 
+void CtdlDestroySearchHooks(void)
+{
+        struct SearchFunctionHook *cur, *p;
+
+       cur = SearchFunctionHookTable;
+       SearchFunctionHookTable = NULL;
+        while (cur != NULL) {
+               p = cur->next;
+               free(cur);
+               cur = p;
+       }
+}
+
 void CtdlModuleDoSearch(int *num_msgs, long **search_msgs, const char *search_string, const char *func_name)
 {
        struct SearchFunctionHook *fcn = NULL;
@@ -915,7 +944,7 @@ void PerformSessionHooks(int EventType)
        for (fcn = SessionHookTable; fcn != NULL; fcn = fcn->next) {
                if (fcn->eventtype == EventType) {
                        if (EventType == EVT_TIMER) {
-                               citthread_setspecific(MyConKey, NULL);  /* for every hook */
+                               pthread_setspecific(MyConKey, NULL);    /* for every hook */
                        }
                        (*fcn->h_function_pointer) ();
                }
@@ -940,20 +969,22 @@ int PerformMessageHooks(struct CtdlMessage *msg, int EventType)
 
        /* Other code may elect to protect this message from server-side
         * handlers; if this is the case, don't do anything.
-       CtdlLogPrintf(CTDL_DEBUG, "** Event type is %d, flags are %d\n",
-               EventType, msg->cm_flags);
+       syslog(LOG_DEBUG, "** Event type is %d, flags are %d\n", EventType, msg->cm_flags);
         */
        if (msg->cm_flags & CM_SKIP_HOOKS) {
-               CtdlLogPrintf(CTDL_DEBUG, "Skipping hooks\n");
+               syslog(LOG_DEBUG, "Skipping hooks\n");
                return(0);
        }
 
        /* Otherwise, run all the hooks appropriate to this event type.
         */
+       int num_hooks_processed = 0;
        for (fcn = MessageHookTable; fcn != NULL; fcn = fcn->next) {
                if (fcn->eventtype == EventType) {
-                       total_retval = total_retval +
-                               (*fcn->h_function_pointer) (msg);
+                       total_retval = total_retval + (*fcn->h_function_pointer) (msg);
+                       syslog(LOG_DEBUG, "%d hooks completed, total_retval=%d",
+                               ++num_hooks_processed, total_retval
+                       );
                }
        }
 
@@ -970,7 +1001,7 @@ int PerformRoomHooks(struct ctdlroom *target_room)
        struct RoomFunctionHook *fcn;
        int total_retval = 0;
 
-       CtdlLogPrintf(CTDL_DEBUG, "Performing room hooks for <%s>\n", target_room->QRname);
+       syslog(LOG_DEBUG, "Performing room hooks for <%s>\n", target_room->QRname);
 
        for (fcn = RoomHookTable; fcn != NULL; fcn = fcn->next) {
                total_retval = total_retval + (*fcn->fcn_ptr) (target_room);