/*
- * $Id: sysdep.c 7989 2009-10-31 15:29:37Z davew $
- *
* Citadel context management stuff.
- * See COPYING for copyright information.
- *
* Here's where we (hopefully) have all the code that manipulates contexts.
*
+ * 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, version 3.
+ *
+ * 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.
*/
#include "sysdep.h"
#include <sys/socket.h>
#include <syslog.h>
#include <sys/syslog.h>
+/*
+#include <sys/syscall.h>
+*/
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
#include "user_ops.h"
#include "control.h"
+int DebugSession = 0;
-
-citthread_key_t MyConKey; /* TSD key for MyContext() */
+pthread_key_t MyConKey; /* TSD key for MyContext() */
CitContext masterCC;
return TERM_NOTALLOWED;
}
- CtdlLogPrintf(CTDL_DEBUG, "Locating session to kill\n");
+ CONM_syslog(LOG_DEBUG, "Locating session to kill\n");
begin_critical_section(S_SESSION_TABLE);
for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
if (session_num == ccptr->cs_pid) {
ret |= TERM_FOUND;
if ((ccptr->user.usernum == CC->user.usernum)
- || (CC->user.axlevel >= 6)) {
+ || (CC->user.axlevel >= AxAideU)) {
ret |= TERM_ALLOWED;
- ccptr->kill_me = 1;
+ ccptr->kill_me = KILLME_ADMIN_TERMINATE;
}
}
}
* This function is used *VERY* frequently and must be kept small.
*/
CitContext *MyContext(void) {
-
register CitContext *c;
-
- return ((c = (CitContext *) citthread_getspecific(MyConKey),
- c == NULL) ? &masterCC : c
- );
+ return ((c = (CitContext *) pthread_getspecific(MyConKey), c == NULL) ? &masterCC : c);
}
{
CitContext *ccptr;
time_t now;
- int session_to_kill;
int killed = 0;
int longrunners = 0;
now = time(NULL);
- session_to_kill = 0;
begin_critical_section(S_SESSION_TABLE);
for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
- if ( (ccptr!=CC)
- && (config.c_sleeping > 0)
- && (now - (ccptr->lastcmd) > config.c_sleeping) ) {
+ if (
+ (ccptr != CC)
+ && (config.c_sleeping > 0)
+ && (now - (ccptr->lastcmd) > config.c_sleeping)
+ ) {
if (!ccptr->dont_term) {
- ccptr->kill_me = 1;
+ ccptr->kill_me = KILLME_IDLE;
++killed;
}
- else
- longrunners ++;
+ else {
+ ++longrunners;
+ }
}
}
end_critical_section(S_SESSION_TABLE);
if (killed > 0)
- CtdlLogPrintf(CTDL_INFO, "Terminated %d idle sessions\n", killed);
+ CON_syslog(LOG_INFO, "Scheduled %d idle sessions for termination\n", killed);
if (longrunners > 0)
- CtdlLogPrintf(CTDL_INFO, "Didn't terminate %d protected idle sessions;\n", killed);
+ CON_syslog(LOG_INFO, "Didn't terminate %d protected idle sessions", longrunners);
+}
+
+
+/*
+ * During shutdown, close the sockets of any sessions still connected.
+ */
+void terminate_all_sessions(void)
+{
+ CitContext *ccptr;
+ int killed = 0;
+
+ begin_critical_section(S_SESSION_TABLE);
+ for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
+ if (ccptr->client_socket != -1)
+ {
+ CON_syslog(LOG_INFO, "terminate_all_sessions() is murdering %s", ccptr->curr_user);
+ close(ccptr->client_socket);
+ ccptr->client_socket = -1;
+ killed++;
+ }
+ }
+ end_critical_section(S_SESSION_TABLE);
+ if (killed > 0) {
+ CON_syslog(LOG_INFO, "Flushed %d stuck sessions\n", killed);
+ }
}
*/
void RemoveContext (CitContext *con)
{
- if (con==NULL) {
- CtdlLogPrintf(CTDL_ERR,
- "WARNING: RemoveContext() called with NULL!\n");
+ const char *c;
+ if (con == NULL) {
+ CONM_syslog(LOG_ERR, "WARNING: RemoveContext() called with NULL!");
return;
}
- CtdlLogPrintf(CTDL_DEBUG, "RemoveContext() session %d\n", con->cs_pid);
+ c = con->ServiceName;
+ if (c == NULL) {
+ c = "WTF?";
+ }
+ CON_syslog(LOG_DEBUG, "RemoveContext(%s) session %d", c, con->cs_pid);
+/// cit_backtrace();
/* Run any cleanup routines registered by loadable modules.
* Note: We have to "become_session()" because the cleanup functions
become_session(con);
CtdlUserLogout();
PerformSessionHooks(EVT_STOP);
+ client_close(); /* If the client is still connected, blow 'em away. */
become_session(NULL);
- CtdlLogPrintf(CTDL_NOTICE, "[%3d] Session ended.\n", con->cs_pid);
+ CON_syslog(LOG_NOTICE, "[%3d]SRV[%s] Session ended.", con->cs_pid, c);
- /* If the client is still connected, blow 'em away. */
- CtdlLogPrintf(CTDL_DEBUG, "Closing socket %d\n", con->client_socket);
- close(con->client_socket);
+ /*
+ * If the client is still connected, blow 'em away.
+ * if the socket is 0 or -1, its already gone or was never there.
+ */
+ if (con->client_socket > 0)
+ {
+ CON_syslog(LOG_NOTICE, "Closing socket %d", con->client_socket);
+ close(con->client_socket);
+ }
/* If using AUTHMODE_LDAP, free the DN */
if (con->ldap_dn) {
free(con->ldap_dn);
con->ldap_dn = NULL;
}
+ FreeStrBuf(&con->StatusMessage);
+ FreeStrBuf(&con->MigrateBuf);
+ FreeStrBuf(&con->RecvBuf.Buf);
+ if (con->cached_msglist) {
+ free(con->cached_msglist);
+ }
- CtdlLogPrintf(CTDL_DEBUG, "Done with RemoveContext()\n");
+ CONM_syslog(LOG_DEBUG, "Done with RemoveContext()");
}
-
/*
* Initialize a new context and place it in the list. The session number
* used to be the PID (which is why it's called cs_pid), but that was when we
me = (CitContext *) malloc(sizeof(CitContext));
if (me == NULL) {
- CtdlLogPrintf(CTDL_ALERT, "citserver: can't allocate memory!!\n");
+ CONM_syslog(LOG_ALERT, "citserver: can't allocate memory!!\n");
return NULL;
}
memset(me, 0, sizeof(CitContext));
-
- /* Give the contaxt a name. Hopefully makes it easier to track */
+
+ /* Give the context a name. Hopefully makes it easier to track */
strcpy (me->user.fullname, "SYS_notauth");
/* The new context will be created already in the CON_EXECUTING state
* Generate a unique session number and insert this context into
* the list.
*/
+ me->MigrateBuf = NewStrBuf();
+
+ me->RecvBuf.Buf = NewStrBuf();
+
+ me->lastcmd = time(NULL); /* set lastcmd to now to prevent idle timer infanticide TODO: if we have a valid IO, use that to set the timer. */
+
+
begin_critical_section(S_SESSION_TABLE);
me->cs_pid = ++next_pid;
me->prev = NULL;
}
+/*
+ * Initialize a new context and place it in the list. The session number
+ * used to be the PID (which is why it's called cs_pid), but that was when we
+ * had one process per session. Now we just assign them sequentially, starting
+ * at 1 (don't change it to 0 because masterCC uses 0).
+ */
+CitContext *CloneContext(CitContext *CloneMe) {
+ CitContext *me;
+ static int next_pid = 0;
+
+ me = (CitContext *) malloc(sizeof(CitContext));
+ if (me == NULL) {
+ CONM_syslog(LOG_ALERT, "citserver: can't allocate memory!!\n");
+ return NULL;
+ }
+ memcpy(me, CloneMe, sizeof(CitContext));
+
+ memset(&me->RecvBuf, 0, sizeof(IOBuffer));
+ memset(&me->SendBuf, 0, sizeof(IOBuffer));
+ memset(&me->SBuf, 0, sizeof(IOBuffer));
+ me->MigrateBuf = NULL;
+ me->sMigrateBuf = NULL;
+ me->redirect_buffer = NULL;
+#ifdef HAVE_OPENSSL
+ me->ssl = NULL;
+#endif
+
+ me->download_fp = NULL;
+ me->upload_fp = NULL;
+ /// TODO: what about the room/user?
+ me->ma = NULL;
+ me->openid_data = NULL;
+ me->ldap_dn = NULL;
+ me->session_specific_data = NULL;
+
+ me->download_fp = NULL;
+ me->upload_fp = NULL;
+ me->client_socket = 0;
+
+ me->MigrateBuf = NewStrBuf();
+ me->RecvBuf.Buf = NewStrBuf();
+
+ begin_critical_section(S_SESSION_TABLE);
+ {
+ me->cs_pid = ++next_pid;
+ me->prev = NULL;
+ me->next = ContextList;
+ me->lastcmd = time(NULL); /* set lastcmd to now to prevent idle timer infanticide */
+ ContextList = me;
+ if (me->next != NULL) {
+ me->next->prev = me;
+ }
+ ++num_sessions;
+ }
+ end_critical_section(S_SESSION_TABLE);
+ return (me);
+}
+
+
+/*
+ * Return an array containing a copy of the context list.
+ * This allows worker threads to perform "for each context" operations without
+ * having to lock and traverse the live list.
+ */
CitContext *CtdlGetContextArray(int *count)
{
int nContexts, i;
nContexts = num_sessions;
nptr = malloc(sizeof(CitContext) * nContexts);
- if (!nptr)
+ if (!nptr) {
+ *count = 0;
return NULL;
+ }
begin_critical_section(S_SESSION_TABLE);
- for (cptr = ContextList, i=0; cptr != NULL && i < nContexts; cptr = cptr->next, i++)
+ for (cptr = ContextList, i=0; cptr != NULL && i < nContexts; cptr = cptr->next, i++) {
memcpy(&nptr[i], cptr, sizeof (CitContext));
+ }
end_critical_section (S_SESSION_TABLE);
*count = i;
-/**
+/*
* This function fills in a context and its user field correctly
* Then creates/loads that user
*/
void CtdlFillSystemContext(CitContext *context, char *name)
{
- char sysname[USERNAME_SIZE];
+ char sysname[SIZ];
+ long len;
memset(context, 0, sizeof(CitContext));
context->internal_pgm = 1;
context->cs_pid = 0;
strcpy (sysname, "SYS_");
strcat (sysname, name);
+ len = cutuserkey(sysname);
+ memcpy(context->curr_user, sysname, len + 1);
+ context->client_socket = (-1);
+ context->state = CON_SYS;
+ context->ServiceName = name;
+
/* internal_create_user has the side effect of loading the user regardless of wether they
* already existed or needed to be created
*/
- internal_create_user (sysname, &(context->user), -1) ;
+ internal_create_user (sysname, len, &(context->user), -1) ;
/* Check to see if the system user needs upgrading */
if (context->user.usernum == 0)
{ /* old system user with number 0, upgrade it */
context->user.usernum = get_new_user_number();
- CtdlLogPrintf(CTDL_DEBUG, "Upgrading system user \"%s\" from user number 0 to user number %d\n", context->user.fullname, context->user.usernum);
+ CON_syslog(LOG_INFO, "Upgrading system user \"%s\" from user number 0 to user number %ld\n", context->user.fullname, context->user.usernum);
/* add user to the database */
CtdlPutUser(&(context->user));
cdb_store(CDB_USERSBYNUMBER, &(context->user.usernum), sizeof(long), context->user.fullname, strlen(context->user.fullname)+1);
}
}
+
/*
* Cleanup any contexts that are left lying around
*/
/* Remove the session from the active list */
rem = ptr->next;
--num_sessions;
-
- CtdlLogPrintf(CTDL_DEBUG, "Purging session %d\n", ptr->cs_pid);
+
+ CON_syslog(LOG_DEBUG, "context_cleanup(): purging session %d\n", ptr->cs_pid);
RemoveContext(ptr);
free (ptr);
ptr = rem;
-/*
- * Terminate another session.
- * (This could justifiably be moved out of sysdep.c because it
- * no longer does anything that is system-dependent.)
- */
-void kill_session(int session_to_kill) {
- CitContext *ptr;
-
- begin_critical_section(S_SESSION_TABLE);
- for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
- if (ptr->cs_pid == session_to_kill) {
- ptr->kill_me = 1;
- }
- }
- end_critical_section(S_SESSION_TABLE);
-}
-
/*
* Purge all sessions which have the 'kill_me' flag set.
* This function has code to prevent it from running more than once every
*/
void dead_session_purge(int force) {
CitContext *ptr, *ptr2; /* general-purpose utility pointer */
- CitContext *rem = NULL; /* list of sessions to be destroyed */
+ CitContext *rem = NULL; /* list of sessions to be destroyed */
if (force == 0) {
if ( (time(NULL) - last_purge) < 5 ) {
* is allocated privately on this thread's stack.
*/
while (rem != NULL) {
- CtdlLogPrintf(CTDL_DEBUG, "Purging session %d\n", rem->cs_pid);
+ CON_syslog(LOG_DEBUG, "dead_session_purge(): purging session %d, reason=%d\n", rem->cs_pid, rem->kill_me);
RemoveContext(rem);
ptr = rem;
rem = rem->next;
* function initializes it.
*/
void InitializeMasterCC(void) {
- memset(&masterCC, 0, sizeof( CitContext));
+ memset(&masterCC, 0, sizeof(struct CitContext));
masterCC.internal_pgm = 1;
masterCC.cs_pid = 0;
}
+
/*
- * Bind a thread to a context. (It's inline merely to speed things up.)
+ * Set the "async waiting" flag for a session, if applicable
*/
-INLINE void become_session(CitContext *which_con) {
- citthread_setspecific(MyConKey, (void *)which_con );
+void set_async_waiting(struct CitContext *ccptr)
+{
+ CON_syslog(LOG_DEBUG, "Setting async_waiting flag for session %d\n", ccptr->cs_pid);
+ if (ccptr->is_async) {
+ ccptr->async_waiting++;
+ if (ccptr->state == CON_IDLE) {
+ ccptr->state = CON_READY;
+ }
+ }
}
-
+void DebugSessionEnable(const int n)
+{
+ DebugSession = n;
+}
+CTDL_MODULE_INIT(session)
+{
+ if (!threading) {
+ CtdlRegisterDebugFlagHook(HKEY("session"), DebugSessionEnable, &DebugSession);
+ }
+ return "session";
+}
projects / citadel.git / blobdiff