-/*******************************************************
+/*
+ * $Id$
*
* Citadel Dynamic Loading Module
- * Written by Brian Costello
- * btx@calyx.net
- *
- * $Id$
+ * Written by Brian Costello <btx@calyx.net>
*
- ******************************************************/
-
+ */
#include "sysdep.h"
#include <stdio.h>
#include <stdlib.h>
+#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
+#endif
+#ifdef HAVE_DL_H
+#include <dl.h>
+#include "hpsux.h"
+#endif
#include <sys/types.h>
#include <dirent.h>
-#include <strings.h>
+#include <string.h>
#include <syslog.h>
-#ifdef HAVE_PTHREAD_H
-#include <pthread.h>
-#endif
#include <limits.h>
#include <ctype.h>
-#include "dynloader.h"
#include "citadel.h"
#include "server.h"
+#include "dynloader.h"
#include "sysdep_decls.h"
+#include "msgbase.h"
#include "tools.h"
+#include "config.h"
#ifndef HAVE_SNPRINTF
#include <stdarg.h>
struct CleanupFunctionHook *CleanupHookTable = NULL;
struct SessionFunctionHook *SessionHookTable = NULL;
struct UserFunctionHook *UserHookTable = NULL;
+struct XmsgFunctionHook *XmsgHookTable = NULL;
+struct MessageFunctionHook *MessageHookTable = NULL;
+struct ServiceFunctionHook *ServiceHookTable = NULL;
struct ProtoFunctionHook {
void (*handler) (char *cmdbuf);
p->desc = desc;
p->next = ProtoHookList;
ProtoHookList = p;
+ lprintf(5, "Registered server command %s (%s)\n", cmd, desc);
}
int DLoader_Exec_Cmd(char *cmdbuf)
void DLoader_Init(char *pathname)
{
void *fcn_handle;
- char dl_error[256];
+ char dl_error[SIZ];
DIR *dir;
int i;
struct dirent *dptr;
exit(1);
}
while ((dptr = readdir(dir)) != NULL) {
- if (dptr->d_name[0] == '.')
+ if (strlen(dptr->d_name) < 4)
+ continue;
+ if (strcasecmp(&dptr->d_name[strlen(dptr->d_name)-3], ".so"))
continue;
- lprintf(9, "Attempting to load %s\n", dptr->d_name);
snprintf(pathbuf, PATH_MAX, "%s/%s", pathname, dptr->d_name);
-#ifdef RTLD_NOW
- if (!(fcn_handle = dlopen(pathbuf, RTLD_NOW)))
+ lprintf(7, "Initializing %s...\n", pathbuf);
+
+#ifdef RTLD_LAZY
+ if (!(fcn_handle = dlopen(pathbuf, RTLD_LAZY)))
#else /* OpenBSD */
if (!(fcn_handle = dlopen(pathbuf, DL_LAZY)))
#endif
}
+void CtdlRegisterMessageHook(int (*handler)(struct CtdlMessage *),
+ int EventType)
+{
+
+ struct MessageFunctionHook *newfcn;
+
+ newfcn = (struct MessageFunctionHook *)
+ mallok(sizeof(struct MessageFunctionHook));
+ newfcn->next = MessageHookTable;
+ newfcn->h_function_pointer = handler;
+ newfcn->eventtype = EventType;
+ MessageHookTable = newfcn;
+
+ lprintf(5, "Registered a new message function (type %d)\n",
+ EventType);
+}
+
+
+void CtdlRegisterXmsgHook(int (*fcn_ptr) (char *, char *, char *), int order)
+{
+
+ struct XmsgFunctionHook *newfcn;
+
+ newfcn = (struct XmsgFunctionHook *)
+ mallok(sizeof(struct XmsgFunctionHook));
+ newfcn->next = XmsgHookTable;
+ newfcn->order = order;
+ newfcn->h_function_pointer = fcn_ptr;
+ XmsgHookTable = newfcn;
+ lprintf(5, "Registered a new x-msg function (priority %d)\n", order);
+}
+
+void CtdlRegisterServiceHook(int tcp_port,
+ char *sockpath,
+ void (*h_greeting_function) (void),
+ void (*h_command_function) (void) )
+{
+ struct ServiceFunctionHook *newfcn;
+ char message[SIZ];
+
+ newfcn = (struct ServiceFunctionHook *)
+ mallok(sizeof(struct ServiceFunctionHook));
+ newfcn->next = ServiceHookTable;
+ newfcn->tcp_port = tcp_port;
+ newfcn->sockpath = sockpath;
+ newfcn->h_greeting_function = h_greeting_function;
+ newfcn->h_command_function = h_command_function;
+
+ if (sockpath != NULL) {
+ newfcn->msock = ig_uds_server(sockpath, config.c_maxsessions);
+ sprintf(message, "Unix domain socket '%s': ", sockpath);
+ }
+ else if (tcp_port <= 0) { /* port -1 to disable */
+ lprintf(7, "Service has been manually disabled, skipping\n");
+ phree(newfcn);
+ return;
+ }
+ else {
+ newfcn->msock = ig_tcp_server(tcp_port, config.c_maxsessions);
+ sprintf(message, "TCP port %d: ", tcp_port);
+ }
+
+ if (newfcn->msock > 0) {
+ ServiceHookTable = newfcn;
+ strcat(message, "registered.");
+ lprintf(5, "%s\n", message);
+ }
+ else {
+ strcat(message, "FAILED.");
+ lprintf(2, "%s\n", message);
+ phree(newfcn);
+ }
+}
+
+
+
void PerformSessionHooks(int EventType)
{
struct SessionFunctionHook *fcn;
}
}
}
+
+int PerformMessageHooks(struct CtdlMessage *msg, int EventType)
+{
+ struct MessageFunctionHook *fcn;
+ int total_retval = 0;
+
+ /* Other code may elect to protect this message from server-side
+ * handlers; if this is the case, don't do anything.
+ */
+ lprintf(9, "** Event type is %d, flags are %d\n",
+ EventType, msg->cm_flags);
+ if (msg->cm_flags & CM_SKIP_HOOKS) {
+ lprintf(9, "Skipping hooks\n");
+ return(0);
+ }
+
+ /* Otherwise, run all the hooks appropriate to this event type.
+ */
+ for (fcn = MessageHookTable; fcn != NULL; fcn = fcn->next) {
+ if (fcn->eventtype == EventType) {
+ total_retval = total_retval +
+ (*fcn->h_function_pointer) (msg);
+ }
+ }
+
+ /* Return the sum of the return codes from the hook functions. If
+ * this is an EVT_BEFORESAVE event, a nonzero return code will cause
+ * the save operation to abort.
+ */
+ return total_retval;
+}
+
+
+
+int PerformXmsgHooks(char *sender, char *recp, char *msg)
+{
+ struct XmsgFunctionHook *fcn;
+ int total_sent = 0;
+ int p;
+
+ for (p=0; p<MAX_XMSG_PRI; ++p) {
+ for (fcn = XmsgHookTable; fcn != NULL; fcn = fcn->next) {
+ if (fcn->order == p) {
+ total_sent +=
+ (*fcn->h_function_pointer)
+ (sender, recp, msg);
+ }
+ }
+ /* Break out of the loop if a higher-priority function
+ * successfully delivered the message. This prevents duplicate
+ * deliveries to local users simultaneously signed onto
+ * remote services.
+ */
+ if (total_sent) goto DONE;
+ }
+DONE: return total_sent;
+}
projects / citadel.git / blobdiff