-/*
- * Citadel context management stuff.
- * Here's where we (hopefully) have all the code that manipulates contexts.
- *
- * Copyright (c) 1987-2015 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.
- */
+//
+// Citadel context management stuff.
+// Here's where we (hopefully) have all the code that manipulates contexts.
+//
+// Copyright (c) 1987-2020 by the citadel.org team
+//
+// This program is open source software. Use, duplication, or disclosure
+// is subject to the terms of the GNU General Public License, version 3.
+// The program is distributed without any warranty, expressed or implied.
#include "ctdl_module.h"
#include "serv_extensions.h"
-#include "ecrash.h"
-
#include "citserver.h"
#include "user_ops.h"
#include "locate_host.h"
#include "control.h"
#include "config.h"
-int DebugSession = 0;
-
pthread_key_t MyConKey; /* TSD key for MyContext() */
-
-
CitContext masterCC;
CitContext *ContextList = NULL;
-
time_t last_purge = 0; /* Last dead session purge */
int num_sessions = 0; /* Current number of sessions */
int next_pid = 0;
/* Try to go single user */
-int CtdlTrySingleUser(void)
-{
+int CtdlTrySingleUser(void) {
int can_do = 0;
begin_critical_section(S_SINGLE_USER);
return can_do;
}
-void CtdlEndSingleUser(void)
-{
+
+void CtdlEndSingleUser(void) {
begin_critical_section(S_SINGLE_USER);
want_single_user = 0;
end_critical_section(S_SINGLE_USER);
}
-int CtdlWantSingleUser(void)
-{
+int CtdlWantSingleUser(void) {
return want_single_user;
}
-int CtdlIsSingleUser(void)
-{
- if (want_single_user)
- {
+
+int CtdlIsSingleUser(void) {
+ if (want_single_user) {
/* check for only one context here */
if (num_sessions == 1)
- return TRUE;
+ return 1;
}
- return FALSE;
+ return 0;
}
-
-
-
/*
* Locate a context by its session number and terminate it if the user is able.
* User can NOT terminate their current session.
* User CAN terminate any other session that has them logged in.
* Aide CAN terminate any session except the current one.
*/
-int CtdlTerminateOtherSession (int session_num)
-{
- struct CitContext *CCC = CC;
+int CtdlTerminateOtherSession (int session_num) {
int ret = 0;
CitContext *ccptr;
int aide;
- if (session_num == CCC->cs_pid) return TERM_NOTALLOWED;
+ if (session_num == CC->cs_pid) return TERM_NOTALLOWED;
- aide = ( (CCC->user.axlevel >= AxAideU) || (CCC->internal_pgm) ) ;
+ aide = ( (CC->user.axlevel >= AxAideU) || (CC->internal_pgm) ) ;
- CONM_syslog(LOG_DEBUG, "Locating session to kill\n");
+ syslog(LOG_DEBUG, "context: locating session to kill");
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 == CCC->user.usernum) || aide) {
+ if ((ccptr->user.usernum == CC->user.usernum) || aide) {
ret |= TERM_ALLOWED;
}
break;
if (((ret & TERM_FOUND) != 0) && ((ret & TERM_ALLOWED) != 0))
{
- if (ccptr->IO != NULL) {
- AsyncIO *IO = ccptr->IO;
- end_critical_section(S_SESSION_TABLE);
- KillAsyncIOContext(IO);
- }
+ if (ccptr->user.usernum == CC->user.usernum)
+ ccptr->kill_me = KILLME_ADMIN_TERMINATE;
else
- {
- if (ccptr->user.usernum == CCC->user.usernum)
- ccptr->kill_me = KILLME_ADMIN_TERMINATE;
- else
- ccptr->kill_me = KILLME_IDLE;
- end_critical_section(S_SESSION_TABLE);
- }
+ ccptr->kill_me = KILLME_IDLE;
+ end_critical_section(S_SESSION_TABLE);
}
else
end_critical_section(S_SESSION_TABLE);
}
-
/*
* Check to see if the user who we just sent mail to is logged in. If yes,
* bump the 'new mail' counter for their session. That enables them to
* receive a new mail notification without having to hit the database.
*/
-void BumpNewMailCounter(long which_user)
-{
+void BumpNewMailCounter(long which_user) {
CtdlBumpNewMailCounter(which_user);
}
-void CtdlBumpNewMailCounter(long which_user)
-{
+
+void CtdlBumpNewMailCounter(long which_user) {
CitContext *ptr;
begin_critical_section(S_SESSION_TABLE);
* The user may not have been logged in when this function was called BUT
* because of threading the user might be logged in before you test the result.
*/
-int CtdlIsUserLoggedIn (char *user_name)
-{
+int CtdlIsUserLoggedIn(char *user_name) {
CitContext *cptr;
int ret = 0;
}
-
/*
* Check to see if a user is currently logged in.
* Basically same as CtdlIsUserLoggedIn() but uses the user number instead.
* The user may not have been logged in when this function was called BUT
* because of threading the user might be logged in before you test the result.
*/
-int CtdlIsUserLoggedInByNum (long usernum)
-{
+int CtdlIsUserLoggedInByNum (long usernum) {
CitContext *cptr;
int ret = 0;
}
-
/*
* Return a pointer to the CitContext structure bound to the thread which
* called this function. If there's no such binding (for example, if it's
}
-
-
/*
* Terminate idle sessions. This function pounds through the session table
* comparing the current time to each session's time-of-last-command. If an
* idle session is found it is terminated, then the search restarts at the
* beginning because the pointer to our place in the list becomes invalid.
*/
-void terminate_idle_sessions(void)
-{
+void terminate_idle_sessions(void) {
CitContext *ccptr;
time_t now;
int killed = 0;
}
}
end_critical_section(S_SESSION_TABLE);
- if (killed > 0)
- CON_syslog(LOG_INFO, "Scheduled %d idle sessions for termination\n", killed);
- if (longrunners > 0)
- CON_syslog(LOG_INFO, "Didn't terminate %d protected idle sessions", longrunners);
+ if (killed > 0) {
+ syslog(LOG_INFO, "context: scheduled %d idle sessions for termination", killed);
+ }
+ if (longrunners > 0) {
+ syslog(LOG_INFO, "context: did not terminate %d protected idle sessions", longrunners);
+ }
}
/*
* During shutdown, close the sockets of any sessions still connected.
*/
-void terminate_all_sessions(void)
-{
+void terminate_all_sessions(void) {
CitContext *ccptr;
int killed = 0;
for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
if (ccptr->client_socket != -1)
{
- if (ccptr->IO != NULL) {
- CON_syslog(LOG_INFO, "terminate_all_sessions() is murdering %s IO[%ld]CC[%d]", ccptr->curr_user, ccptr->IO->ID, ccptr->cs_pid);
- }
- else {
- CON_syslog(LOG_INFO, "terminate_all_sessions() is murdering %s CC[%d]", ccptr->curr_user, ccptr->cs_pid);
- }
+ syslog(LOG_INFO, "context: terminate_all_sessions() is murdering %s CC[%d]", ccptr->curr_user, ccptr->cs_pid);
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);
+ syslog(LOG_INFO, "context: flushed %d stuck sessions", killed);
}
}
-
/*
* Terminate a session.
*/
-void RemoveContext (CitContext *con)
-{
+void RemoveContext (CitContext *con) {
const char *c;
if (con == NULL) {
- CONM_syslog(LOG_ERR, "WARNING: RemoveContext() called with NULL!");
+ syslog(LOG_ERR, "context: RemoveContext() called with NULL, this should not happen");
return;
}
c = con->ServiceName;
if (c == NULL) {
c = "WTF?";
}
- CON_syslog(LOG_DEBUG, "RemoveContext(%s) session %d", c, con->cs_pid);
-/// cit_backtrace();
+ syslog(LOG_DEBUG, "context: RemoveContext(%s) session %d", c, con->cs_pid);
/* Run any cleanup routines registered by loadable modules.
* Note: We have to "become_session()" because the cleanup functions
client_close(); /* If the client is still connected, blow 'em away. */
become_session(NULL);
- CON_syslog(LOG_NOTICE, "[%3d]SRV[%s] Session ended.", con->cs_pid, c);
+ syslog(LOG_INFO, "context: [%3d]SRV[%s] Session ended.", con->cs_pid, c);
/*
* 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);
+ if (con->client_socket > 0) {
+ syslog(LOG_INFO, "context: closing socket %d", con->client_socket);
close(con->client_socket);
}
free(con->cached_msglist);
}
- CONM_syslog(LOG_DEBUG, "Done with RemoveContext()");
+ syslog(LOG_DEBUG, "context: 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) {
- CONM_syslog(LOG_ALERT, "citserver: can't allocate memory!!\n");
+ syslog(LOG_ERR, "citserver: malloc() failed: %m");
return NULL;
}
memset(me, 0, sizeof(CitContext));
me = (CitContext *) malloc(sizeof(CitContext));
if (me == NULL) {
- CONM_syslog(LOG_ALERT, "citserver: can't allocate memory!!\n");
+ syslog(LOG_ERR, "citserver: malloc() failed: %m");
return NULL;
}
memcpy(me, CloneMe, sizeof(CitContext));
* This allows worker threads to perform "for each context" operations without
* having to lock and traverse the live list.
*/
-CitContext *CtdlGetContextArray(int *count)
-{
+CitContext *CtdlGetContextArray(int *count) {
int nContexts, i;
CitContext *nptr, *cptr;
}
-
/*
* Back-end function for starting a session
*/
-void begin_session(CitContext *con)
-{
+void begin_session(CitContext *con) {
/*
* Initialize some variables specific to our context.
*/
strcpy(con->lastcmdname, " ");
strcpy(con->cs_clientname, "(unknown)");
strcpy(con->curr_user, NLI);
- *con->net_node = '\0';
- *con->fake_username = '\0';
- *con->fake_hostname = '\0';
- *con->fake_roomname = '\0';
*con->cs_clientinfo = '\0';
safestrncpy(con->cs_host, CtdlGetConfigStr("c_fqdn"), sizeof con->cs_host);
safestrncpy(con->cs_addr, "", sizeof con->cs_addr);
con->cs_UDSclientUID = -1;
con->cs_host[sizeof con->cs_host - 1] = 0;
- if (!CC->is_local_socket) {
+ if (!CC->is_local_client) {
locate_host(con->cs_host, sizeof con->cs_host,
con->cs_addr, sizeof con->cs_addr,
con->client_socket
/*fill in the user data structure */
if(getsockopt(con->client_socket, SOL_SOCKET, SO_PEERCRED, &credentials, &ucred_length)) {
- syslog(LOG_NOTICE, "could obtain credentials from unix domain socket");
+ syslog(LOG_ERR, "context: could obtain credentials from unix domain socket");
}
else {
#endif
}
con->cs_flags = 0;
- con->upload_type = UPL_FILE;
- con->dl_is_net = 0;
con->nologin = 0;
if (((CtdlGetConfigInt("c_maxsessions") > 0)&&(num_sessions > CtdlGetConfigInt("c_maxsessions"))) || CtdlWantSingleUser()) {
con->nologin = 1;
}
- if (!CC->is_local_socket) {
- syslog(LOG_NOTICE, "Session (%s) started from %s (%s).\n", con->ServiceName, con->cs_host, con->cs_addr);
- }
- else {
- syslog(LOG_NOTICE, "Session (%s) started via local socket UID:%d.\n", con->ServiceName, con->cs_UDSclientUID);
- }
+ syslog(LOG_INFO, "context: session (%s) started from %s (%s) uid=%d",
+ con->ServiceName, con->cs_host, con->cs_addr, con->cs_UDSclientUID
+ );
/* Run any session startup routines registered by loadable modules */
PerformSessionHooks(EVT_START);
* This function fills in a context and its user field correctly
* Then creates/loads that user
*/
-void CtdlFillSystemContext(CitContext *context, char *name)
-{
+void CtdlFillSystemContext(CitContext *context, char *name) {
char sysname[SIZ];
long len;
context->cs_pid = 0;
strcpy (sysname, "SYS_");
strcat (sysname, name);
- len = cutuserkey(sysname);
+ len = strlen(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
+ /* internal_create_user has the side effect of loading the user regardless of whether they
* already existed or needed to be created
*/
- internal_create_user (sysname, len, &(context->user), -1) ;
+ internal_create_user(sysname, &(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 */
+ if (context->user.usernum == 0) { /* old system user with number 0, upgrade it */
context->user.usernum = get_new_user_number();
- CON_syslog(LOG_INFO, "Upgrading system user \"%s\" from user number 0 to user number %ld\n", context->user.fullname, context->user.usernum);
+ syslog(LOG_INFO, "context: upgrading system user \"%s\" from user number 0 to user number %ld", 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
*/
-void context_cleanup(void)
-{
+void context_cleanup(void) {
CitContext *ptr = NULL;
CitContext *rem = NULL;
rem = ptr->next;
--num_sessions;
- CON_syslog(LOG_DEBUG, "context_cleanup(): purging session %d\n", ptr->cs_pid);
+ syslog(LOG_DEBUG, "context: context_cleanup() purging session %d", ptr->cs_pid);
RemoveContext(ptr);
free (ptr);
ptr = rem;
}
-
/*
* Purge all sessions which have the 'kill_me' flag set.
* This function has code to prevent it from running more than once every
* is allocated privately on this thread's stack.
*/
while (rem != NULL) {
- CON_syslog(LOG_DEBUG, "dead_session_purge(): purging session %d, reason=%d\n", rem->cs_pid, rem->kill_me);
+ syslog(LOG_DEBUG, "context: dead_session_purge() purging session %d, reason=%d", rem->cs_pid, rem->kill_me);
RemoveContext(rem);
ptr = rem;
rem = rem->next;
}
-
-
-
/*
* masterCC is the context we use when not attached to a session. This
* function initializes it.
}
-
-
-
/*
* Set the "async waiting" flag for a session, if applicable
*/
-void set_async_waiting(struct CitContext *ccptr)
-{
- CON_syslog(LOG_DEBUG, "Setting async_waiting flag for session %d\n", ccptr->cs_pid);
+void set_async_waiting(struct CitContext *ccptr) {
+ syslog(LOG_DEBUG, "context: setting async_waiting flag for session %d", ccptr->cs_pid);
if (ccptr->is_async) {
ccptr->async_waiting++;
if (ccptr->state == CON_IDLE) {
}
-void DebugSessionEnable(const int n)
-{
- DebugSession = n;
-}
CTDL_MODULE_INIT(session)
{
if (!threading) {
- CtdlRegisterDebugFlagHook(HKEY("session"), DebugSessionEnable, &DebugSession);
}
return "session";
}
projects / citadel.git / blobdiff