#include <string.h>
#include <errno.h>
#include <limits.h>
-#ifdef HAVE_PTHREAD_H
-#include <pthread.h>
-#endif
#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>
#include "tools.h"
struct CitContext *ContextList = NULL;
+char *unique_session_numbers;
int ScheduledShutdown = 0;
int do_defrag = 0;
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, 3, "", 0);
+ create_room(SYSCONFIGROOM, 3, "", 0);
+ create_room(config.c_twitroom, 0, "", 0);
}
/*
/* Cancel all running sessions */
lprintf(7, "Cancelling running sessions...\n");
+
+/* FIXME do something here
while (ContextList != NULL) {
- kill_session(ContextList->cs_pid);
}
+ */
/* Run any cleanup routines registered by loadable modules */
for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) {
/*
- * Gracefully terminate the session and thread.
- * (This is called as a cleanup handler by the thread library.)
- *
- * All NON-system-dependent stuff is done in this function.
- * System-dependent session/thread cleanup is in cleanup() in sysdep.c
+ * Terminate a session and remove its context data structure.
*/
-void cleanup(int exit_code)
+void RemoveContext (struct CitContext *con)
{
- lprintf(9, "cleanup(%d) called\n", exit_code);
+ struct CitContext *ptr = NULL;
+ struct CitContext *ToFree = NULL;
- lprintf(7, "Calling logout(%d)\n", CC->cs_pid);
- logout(CC);
+ lprintf(9, "RemoveContext() called\n");
+ if (con==NULL) {
+ lprintf(5, "WARNING: RemoveContext() called with NULL!\n");
+ return;
+ }
- rec_log(CL_TERMINATE,CC->curr_user);
- unlink(CC->temp);
- lprintf(3, "citserver[%3d]: ended.\n",CC->cs_pid);
-
- /* Run any cleanup routines registered by loadable modules */
+ /* 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);
+
+ if (ToFree == NULL) {
+ lprintf(9, "RemoveContext() found nothing to remove\n");
+ return;
+ }
+
+ /* Run any cleanup routines registered by loadable modules.
+ * Note 1: This must occur *before* deallocate_user_data() because the
+ * cleanup functions might touch dynamic session data.
+ * Note 2: We have to "become_session()" because the cleanup functions
+ * might make references to "CC" assuming it's the right one.
+ */
+ become_session(con);
PerformSessionHooks(EVT_STOP);
+ become_session(NULL);
+
+ /* Now handle all of the administrivia. */
+ lprintf(7, "Calling logout(%d)\n", con->cs_pid);
+ logout(con);
- syslog(LOG_NOTICE,"session %d ended", CC->cs_pid);
+ rec_log(CL_TERMINATE, con->curr_user);
+ unlink(con->temp);
+ lprintf(3, "citserver[%3d]: ended.\n", con->cs_pid);
+
+
+ syslog(LOG_NOTICE,"session %d ended", con->cs_pid);
/* Deallocate any user-data attached to this session */
- deallocate_user_data(CC);
+ 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.
+ */
+ enter_housekeeping_cmd("SCHED_SHUTDOWN");
+
+ /* Free up the memory used by this context */
+ phree(con);
+
+ lprintf(7, "Done with RemoveContext()\n");
+}
- /* And flag the context as in need of being killed */
- CC->state = CON_DYING;
- }
/*
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;
}
+/*
+ * 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);
+}
+
+
cprintf("000\n");
}
-void cmd_rchg(char *argbuf)
-{
- char newroomname[ROOMNAMELEN];
-
- extract(newroomname, argbuf, 0);
- newroomname[ROOMNAMELEN] = 0;
- if (strlen(newroomname) > 0) {
- safestrncpy(CC->fake_roomname, newroomname,
- sizeof(CC->fake_roomname) );
- CC->fake_roomname[ROOMNAMELEN - 1] = 0;
- }
- else {
- strcpy(CC->fake_roomname, "");
- }
- cprintf("%d OK\n", OK);
-}
-
-void cmd_hchg(char *newhostname)
-{
- if ((newhostname) && (newhostname[0]))
- {
- memset(CC->fake_hostname, 0, 25);
- safestrncpy(CC->fake_hostname, newhostname, sizeof(CC->fake_hostname));
- }
- else
- strcpy(CC->fake_hostname, "");
- cprintf("%d OK\n",OK);
-}
-
-void cmd_uchg(char *newusername)
-{
- 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);
-}
/*
* returns an asterisk if there are any express messages waiting,
* space otherwise.
*/
-char check_express(void) {
+char CtdlCheckExpress(void) {
if (CC->FirstExpressMessage == NULL) {
return(' ');
}
if (num_parms(argbuf)<4) {
cprintf("%d usage error\n",ERROR);
return;
- }
+ }
dev_code = extract_int(argbuf,0);
cli_code = extract_int(argbuf,1);
safestrncpy(CC->cs_clientname, desc, sizeof CC->cs_clientname);
CC->cs_clientname[31] = 0;
- lprintf(9, "Looking up hostname\n");
- if ((strlen(from_host)>0) &&
- (is_public_client(CC->cs_host))) {
- if (inet_aton(from_host, &addr))
+ lprintf(9, "Looking up hostname '%s'\n", from_host);
+ if ((strlen(from_host)>0)
+ && ( (CC->is_local_socket) || (is_public_client(CC->cs_host)))) {
+ 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);
CC->cs_host[24] = 0;
- }
}
+ }
syslog(LOG_NOTICE,"client %d/%d/%01d.%02d (%s)\n",
dev_code,
(rev_level % 100),
desc);
cprintf("%d Ok\n",OK);
- }
-
-
-/*
- * enter or exit "stealth mode"
- */
-void cmd_stel(char *cmdbuf)
-{
- int requested_mode;
-
- requested_mode = extract_int(cmdbuf,0);
- if (requested_mode !=0) requested_mode = 1;
-
- if (!CC->logged_in) {
- cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
- return;
- }
-
- if (CC->usersupp.axlevel < 6) {
- cprintf("%d You must be an Aide to use stealth mode.\n",
- ERROR+HIGHER_ACCESS_REQUIRED);
- return;
- }
-
- if (CC->cs_flags & CS_STEALTH) {
- if (requested_mode == 0)
- CC->cs_flags = CC->cs_flags-CS_STEALTH;
- }
- else {
- if (requested_mode == 1)
- CC->cs_flags = CC->cs_flags|CS_STEALTH;
- }
-
- cprintf("%d Ok\n",OK);
- }
-
-
+}
/*
}
-/*
- * who's online
- */
-void cmd_rwho(void) {
- struct CitContext *cptr;
- int spoofed = 0;
- int aide;
- char un[40];
- char real_room[ROOMNAMELEN], room[ROOMNAMELEN];
- char host[40], flags[5];
-
- aide = CC->usersupp.axlevel >= 6;
- cprintf("%d%c \n", LISTING_FOLLOWS, check_express() );
-
- for (cptr = ContextList; cptr != NULL; cptr = cptr->next)
- {
- flags[0] = '\0';
- spoofed = 0;
-
- if (cptr->cs_flags & CS_POSTING)
- strcat(flags, "*");
- else
- strcat(flags, ".");
-
- if (cptr->fake_username[0])
- {
- strcpy(un, cptr->fake_username);
- spoofed = 1;
- }
- else
- strcpy(un, cptr->curr_user);
-
- if (cptr->fake_hostname[0])
- {
- strcpy(host, cptr->fake_hostname);
- spoofed = 1;
- }
- else
- strcpy(host, cptr->cs_host);
-
- GenerateRoomDisplay(real_room, cptr, CC);
-
- if (cptr->fake_roomname[0]) {
- strcpy(room, cptr->fake_roomname);
- spoofed = 1;
- }
- else {
- strcpy(room, real_room);
- }
-
- if ((aide) && (spoofed))
- strcat(flags, "+");
-
- if ((cptr->cs_flags & CS_STEALTH) && (aide))
- strcat(flags, "-");
-
- if (((cptr->cs_flags&CS_STEALTH)==0) || (aide))
- {
- cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
- cptr->cs_pid, un, room,
- host, cptr->cs_clientname,
- (long)(cptr->lastidle),
- cptr->lastcmdname, flags);
- }
- if ((spoofed) && (aide))
- {
- cprintf("%d|%s|%s|%s|%s|%ld|%s|%s\n",
- cptr->cs_pid, cptr->curr_user,
- real_room,
- cptr->cs_host, cptr->cs_clientname,
- (long)(cptr->lastidle),
- cptr->lastcmdname, flags);
-
- }
- }
-
- /* Now it's magic time. Before we finish, call any EVT_RWHO hooks
- * so that external paging modules such as serv_icq can add more
- * content to the Wholist.
- */
- PerformSessionHooks(EVT_RWHO);
- cprintf("000\n");
- }
-
/*
* Terminate another running session
{
int session_num;
struct CitContext *ccptr;
- int session_to_kill = 0;
+ int found_it = 0;
if (!CC->logged_in) {
cprintf("%d Not logged in.\n",ERROR+NOT_LOGGED_IN);
begin_critical_section(S_SESSION_TABLE);
for (ccptr = ContextList; ccptr != NULL; ccptr = ccptr->next) {
if (session_num == ccptr->cs_pid) {
- session_to_kill = ccptr->cs_pid;
+ ccptr->kill_me = 1;
+ found_it = 1;
}
}
end_critical_section(S_SESSION_TABLE);
- lprintf(9, "session_to_kill == %d\n", session_to_kill);
- if (session_to_kill > 0) {
- lprintf(9, "calling kill_session()\n");
- kill_session(session_to_kill);
+ if (found_it) {
cprintf("%d Session terminated.\n", OK);
}
else {
/*
- *
+ * Back-end function for starting a session
*/
void begin_session(struct CitContext *con)
{
- int num_sessions, len;
+ int len;
struct sockaddr_in sin;
/*
con->internal_pgm = 0;
con->download_fp = NULL;
con->upload_fp = NULL;
- con->cs_pid = con->client_socket; /* not necessarily portable */
con->FirstExpressMessage = NULL;
time(&con->lastcmd);
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);
con->cs_host[sizeof con->cs_host - 1] = 0;
len = sizeof sin;
- if (!getpeername(con->client_socket, (struct sockaddr *) &sin, &len))
- locate_host(con->cs_host, &sin.sin_addr);
+ if (!CC->is_local_socket) {
+ if (!getpeername(con->client_socket,
+ (struct sockaddr *) &sin, &len))
+ locate_host(con->cs_host, &sin.sin_addr);
+ }
+ else {
+ strcpy(con->cs_host, "");
+ }
con->cs_flags = 0;
con->upload_type = UPL_FILE;
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,
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, "");
}
void do_command_loop(void) {
char cmdbuf[256];
- lprintf(9, "Hi, I'm do_command_loop() and I have client socket %d\n",
- CC->client_socket);
-
time(&CC->lastcmd);
memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
if (client_gets(cmdbuf) < 1) {
- lprintf(3, "Socket is broken, I think.\n");
- cleanup(EXIT_NULL);
+ lprintf(3, "Client socket is broken. Ending session.\n");
+ CC->kill_me = 1;
+ return;
}
lprintf(5, "citserver[%3d]: %s\n", CC->cs_pid, cmdbuf);
}
if (!strncasecmp(cmdbuf,"NOOP",4)) {
- cprintf("%d%cok\n",OK,check_express());
+ cprintf("%d%cok\n",OK,CtdlCheckExpress());
}
else if (!strncasecmp(cmdbuf,"QUIT",4)) {
cprintf("%d Goodbye.\n",OK);
+ CC->kill_me = 1;
}
else if (!strncasecmp(cmdbuf,"LOUT",4)) {
cmd_netf(&cmdbuf[5]);
}
- else if (!strncasecmp(cmdbuf,"RWHO",4)) {
- cmd_rwho();
- }
-
else if (!strncasecmp(cmdbuf,"OPEN",4)) {
cmd_open(&cmdbuf[5]);
}
cmd_lbio();
}
- else if (!strncasecmp(cmdbuf,"STEL",4)) {
- cmd_stel(&cmdbuf[5]);
- }
-
else if (!strncasecmp(cmdbuf,"TERM",4)) {
cmd_term(&cmdbuf[5]);
}
cmd_uimg(&cmdbuf[5]);
}
- else if (!strncasecmp(cmdbuf, "UCHG", 4)) {
- cmd_uchg(&cmdbuf[5]);
- }
-
else if (!strncasecmp(cmdbuf, "TIME", 4)) {
cmd_time();
}
- else if (!strncasecmp(cmdbuf, "HCHG", 4)) {
- cmd_hchg(&cmdbuf[5]);
- }
-
- else if (!strncasecmp(cmdbuf, "RCHG", 4)) {
- cmd_rchg(&cmdbuf[5]);
- }
-
else if (!strncasecmp(cmdbuf, "AGUP", 4)) {
cmd_agup(&cmdbuf[5]);
}
projects / citadel.git / blobdiff