]> code.citadel.org Git - citadel.git/blobdiff - citadel/citserver.c
* Get/save arbitrary configs
[citadel.git] / citadel / citserver.c
index b3e862afe9ab0df53d5eddf9d14ee8d35124d8f3..06ffc25b0e0434c9c14014f37e701276bf7545cb 100644 (file)
@@ -13,6 +13,7 @@
 #include <syslog.h>
 #include <dlfcn.h>
 #include <netdb.h>
+#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
@@ -54,9 +55,10 @@ void master_startup(void) {
        check_ref_counts();
 
        lprintf(7, "Creating base rooms (if necessary)\n");
-       create_room(BASEROOM, 0, "", 0);
-       create_room(AIDEROOM, 4, "", 0);
-       create_room(config.c_twitroom, 0, "", 0);
+       create_room(BASEROOM,           0, "", 0);
+       create_room(AIDEROOM,           4, "", 0);
+       create_room(SYSCONFIGROOM,      4, "", 0);
+       create_room(config.c_twitroom,  0, "", 0);
        }
 
 /*
@@ -129,42 +131,52 @@ void RemoveContext (struct CitContext *con)
                return;
                }
 
-       lprintf(7, "Calling logout(%d)\n", con->cs_pid);
-       logout(con);
-
-       rec_log(CL_TERMINATE, con->curr_user);
-       unlink(con->temp);
-       lprintf(3, "citserver[%3d]: ended.\n", con->cs_pid);
-       
-       /* Run any cleanup routines registered by loadable modules */
-       PerformSessionHooks(EVT_STOP);
-
-       syslog(LOG_NOTICE,"session %d ended", con->cs_pid);
-       
-       /* Deallocate any user-data attached to this session */
-       deallocate_user_data(con);
-
-       /* delete context */
-
-       lprintf(7, "Removing context\n");
-
+       /* Remove the context from the global context list.  This needs
+        * to get done FIRST to avoid concurrency problems.  It is *vitally*
+        * important to keep num_sessions accurate!!
+        */
+       lprintf(7, "Removing context for session %d\n", con->cs_pid);
        begin_critical_section(S_SESSION_TABLE);
        if (ContextList == con) {
                ToFree = ContextList;
                ContextList = ContextList->next;
+               --num_sessions;
                }
        else {
                for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
                        if (ptr->next == con) {
                                ToFree = ptr->next;
                                ptr->next = ptr->next->next;
+                               --num_sessions;
                                }
                        }
                }
        end_critical_section(S_SESSION_TABLE);
 
-       lprintf(7, "Closing socket %d\n", ToFree->client_socket);
-       close(ToFree->client_socket);
+       if (ToFree == NULL) {
+               lprintf(9, "RemoveContext() found nothing to remove\n");
+               return;
+       }
+
+       /* Now handle all of the administrivia. */
+       lprintf(7, "Calling logout(%d)\n", con->cs_pid);
+       logout(con);
+
+       rec_log(CL_TERMINATE, con->curr_user);
+       unlink(con->temp);
+       lprintf(3, "citserver[%3d]: ended.\n", con->cs_pid);
+       
+       /* Run any cleanup routines registered by loadable modules */
+       PerformSessionHooks(EVT_STOP);
+
+       syslog(LOG_NOTICE,"session %d ended", con->cs_pid);
+       
+       /* Deallocate any user-data attached to this session */
+       deallocate_user_data(con);
+
+       /* If the client is still connected, blow 'em away. */
+       lprintf(7, "Closing socket %d\n", con->client_socket);
+       close(con->client_socket);
 
         /* Tell the housekeeping thread to check to see if this is the time
          * to initiate a scheduled shutdown event.
@@ -172,7 +184,7 @@ void RemoveContext (struct CitContext *con)
         enter_housekeeping_cmd("SCHED_SHUTDOWN");
 
        /* Free up the memory used by this context */
-       phree(ToFree);
+       phree(con);
 
        lprintf(7, "Done with RemoveContext()\n");
 }
@@ -232,6 +244,7 @@ void CtdlAllocUserData(unsigned long requested_sym, size_t num_bytes)
        ptr = mallok(sizeof(struct CtdlSessData));
        ptr->sym_id = requested_sym;
        ptr->sym_data = mallok(num_bytes);
+       memset(ptr->sym_data, 0, num_bytes);
 
        begin_critical_section(S_SESSION_TABLE);
        ptr->next = CC->FirstSessData;
@@ -242,6 +255,25 @@ void CtdlAllocUserData(unsigned long requested_sym, size_t num_bytes)
 }
 
 
+/* 
+ * Change the size of a buffer allocated with CtdlAllocUserData()
+ */
+void CtdlReallocUserData(unsigned long requested_sym, size_t num_bytes)
+{
+       struct CtdlSessData *ptr;
+
+       for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next)  {
+               if (ptr->sym_id == requested_sym) {
+                       ptr->sym_data = reallok(ptr->sym_data, num_bytes);
+                       return;
+               }
+       }
+
+       lprintf(2, "CtdlReallocUserData() ERROR: symbol %ld not found!\n",
+               requested_sym);
+}
+
+
 
 
 
@@ -268,7 +300,7 @@ void cmd_info(void) {
 
 void cmd_rchg(char *argbuf)
 {
-       char newroomname[ROOMNAMELEN];
+       char newroomname[256];
 
        extract(newroomname, argbuf, 0);
        newroomname[ROOMNAMELEN-1] = 0;
@@ -284,10 +316,9 @@ void cmd_rchg(char *argbuf)
 
 void cmd_hchg(char *argbuf)
 {
-       char newhostname[25];
+       char newhostname[256];
 
        extract(newhostname, argbuf, 0);
-       newhostname[24] = 0;
        if (strlen(newhostname) > 0) {
                safestrncpy(CC->fake_hostname, newhostname,
                        sizeof(CC->fake_hostname) );
@@ -298,29 +329,36 @@ void cmd_hchg(char *argbuf)
        cprintf("%d OK\n", OK);
 }
 
-void cmd_uchg(char *newusername)
+void cmd_uchg(char *argbuf)
 {
-   if (CC->usersupp.axlevel < 6) 
-   {
-      cprintf("%d You must be an Aide to use UCHG.\n",
-               ERROR+HIGHER_ACCESS_REQUIRED);
-      return;
-   }
-   if ((newusername) && (newusername[0]))
-   {
-      CC->cs_flags &= ~CS_STEALTH;
-      memset(CC->fake_username, 0, 32);
-      if (strncasecmp(newusername, CC->curr_user, strlen(CC->curr_user)))
-         safestrncpy(CC->fake_username, newusername, sizeof(CC->fake_username));
-   }
-   else
-   {
-      CC->fake_username[0] = '\0';
-      CC->cs_flags |= CS_STEALTH;
-   }
-   cprintf("%d\n",OK);
+
+       char newusername[256];
+
+       extract(newusername, argbuf, 0);
+
+       if (CC->usersupp.axlevel < 6) {
+               cprintf("%d You must be an Aide to masquerade your name.\n",
+                       ERROR+HIGHER_ACCESS_REQUIRED);
+               return;
+       }
+
+       if (strlen(newusername) > 0) {
+               CC->cs_flags &= ~CS_STEALTH;
+               memset(CC->fake_username, 0, 32);
+               if (strncasecmp(newusername, CC->curr_user,
+                               strlen(CC->curr_user)))
+                       safestrncpy(CC->fake_username, newusername,
+                               sizeof(CC->fake_username));
+       }
+       else {
+               CC->fake_username[0] = '\0';
+               CC->cs_flags |= CS_STEALTH;
+       }
+       cprintf("%d\n",OK);
 }
 
+
+
 /*
  * returns an asterisk if there are any express messages waiting,
  * space otherwise.
@@ -432,10 +470,10 @@ void cmd_iden(char *argbuf)
        safestrncpy(CC->cs_clientname, desc, sizeof CC->cs_clientname);
        CC->cs_clientname[31] = 0;
 
-       lprintf(9, "Looking up hostname\n");
+       lprintf(9, "Looking up hostname '%s'\n", from_host);
        if ((strlen(from_host)>0) && 
           (is_public_client(CC->cs_host))) {
-               if (inet_aton(from_host, &addr))
+               if ((addr.s_addr = inet_addr(from_host)) != INADDR_NONE)
                        locate_host(CC->cs_host, &addr);
                else {
                        safestrncpy(CC->cs_host, from_host, sizeof CC->cs_host);
@@ -830,11 +868,11 @@ void cmd_scdn(char *argbuf)
 
 
 /*
- * 
+ * Back-end function for starting a session
  */
 void begin_session(struct CitContext *con)
 {
-       int num_sessions, len;
+       int len;
        struct sockaddr_in sin;
 
        /* 
@@ -849,7 +887,7 @@ void begin_session(struct CitContext *con)
        time(&con->lastidle);
        strcpy(con->lastcmdname, "    ");
        strcpy(con->cs_clientname, "(unknown)");
-       strcpy(con->curr_user,"(not logged in)");
+       strcpy(con->curr_user, NLI);
        strcpy(con->net_node,"");
        snprintf(con->temp, sizeof con->temp, tmpnam(NULL));
        safestrncpy(con->cs_host, config.c_fqdn, sizeof con->cs_host);
@@ -862,12 +900,21 @@ void begin_session(struct CitContext *con)
        con->dl_is_net = 0;
        con->FirstSessData = NULL;
 
-       num_sessions = session_count();
        con->nologin = 0;
        if ((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions))
                con->nologin = 1;
 
-       if (con->nologin==1) {
+       lprintf(3, "citserver[%3d]: started.\n", con->cs_pid);
+
+       /* Run any session startup routines registered by loadable modules */
+       PerformSessionHooks(EVT_START);
+
+       rec_log(CL_CONNECT, "");
+}
+
+
+void citproto_begin_session() {
+       if (CC->nologin==1) {
                cprintf("%d %s: Too many users are already online "
                        "(maximum is %d)\n",
                        ERROR+MAX_SESSIONS_EXCEEDED,
@@ -877,13 +924,6 @@ void begin_session(struct CitContext *con)
                cprintf("%d %s Citadel/UX server ready.\n",
                        OK, config.c_nodename);
                }
-
-       lprintf(3, "citserver[%3d]: started.\n", con->cs_pid);
-
-       /* Run any session startup routines registered by loadable modules */
-       PerformSessionHooks(EVT_START);
-
-       rec_log(CL_CONNECT, "");
 }