-/*
- * Main source module for the Citadel server
- *
- * Copyright (c) 1987-2014 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.
- */
-
+// Main source module for the Citadel server
+//
+// Copyright (c) 1987-2021 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 <stdlib.h>
+#include <unistd.h>
#include <stdio.h>
+#include <sys/stat.h>
#include "sysdep.h"
#include <time.h>
-#if HAVE_BACKTRACE
-#include <execinfo.h>
-#endif
#include <libcitadel.h>
#include "ctdl_module.h"
int panic_fd;
int openid_level_supported = 0;
-/*
- * print the actual stack frame.
- */
-void cit_backtrace(void)
-{
-#ifdef HAVE_BACKTRACE
- void *stack_frames[50];
- size_t size, i;
- char **strings;
-
- const char *p = IOSTR;
- if (p == NULL) p = "";
- size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
- strings = backtrace_symbols(stack_frames, size);
- for (i = 0; i < size; i++) {
- if (strings != NULL)
- syslog(LOG_ALERT, "%s %s\n", p, strings[i]);
- else
- syslog(LOG_ALERT, "%s %p\n", p, stack_frames[i]);
- }
- free(strings);
-#endif
-}
-void cit_oneline_backtrace(void)
-{
-#ifdef HAVE_BACKTRACE
- void *stack_frames[50];
- size_t size, i;
- char **strings;
- StrBuf *Buf;
-
- size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
- strings = backtrace_symbols(stack_frames, size);
- if (size > 0)
- {
- Buf = NewStrBuf();
- for (i = 1; i < size; i++) {
- if (strings != NULL)
- StrBufAppendPrintf(Buf, "%s : ", strings[i]);
- else
- StrBufAppendPrintf(Buf, "%p : ", stack_frames[i]);
- }
- free(strings);
- syslog(LOG_ALERT, "%s %s\n", IOSTR, ChrPtr(Buf));
- FreeStrBuf(&Buf);
- }
-#endif
-}
-
-/*
- * print the actual stack frame.
- */
-void cit_panic_backtrace(int SigNum)
-{
-#ifdef HAVE_BACKTRACE
- void *stack_frames[10];
- size_t size, i;
- char **strings;
-
- printf("caught signal 11\n");
- size = backtrace(stack_frames, sizeof(stack_frames) / sizeof(void*));
- strings = backtrace_symbols(stack_frames, size);
- for (i = 0; i < size; i++) {
- if (strings != NULL)
- syslog(LOG_ALERT, "%s\n", strings[i]);
- else
- syslog(LOG_ALERT, "%p\n", stack_frames[i]);
- }
- free(strings);
-#endif
- exit(-1);
-}
-
-/*
- * Various things that need to be initialized at startup
- */
-void master_startup(void) {
+// We need pseudo-random numbers for a few things. Seed generously.
+void seed_random_number_generator(void) {
+ FILE *urandom;
struct timeval tv;
unsigned int seed;
- FILE *urandom;
- struct ctdlroom qrbuf;
- int rv;
-
- syslog(LOG_DEBUG, "master_startup() started\n");
- time(&server_startup_time);
- get_config();
- syslog(LOG_INFO, "Opening databases\n");
- open_databases();
- check_ref_counts();
-
- syslog(LOG_INFO, "Creating base rooms (if necessary)\n");
- CtdlCreateRoom(config.c_baseroom, 0, "", 0, 1, 0, VIEW_BBS);
- CtdlCreateRoom(AIDEROOM, 3, "", 0, 1, 0, VIEW_BBS);
- CtdlCreateRoom(SYSCONFIGROOM, 3, "", 0, 1, 0, VIEW_BBS);
- CtdlCreateRoom(config.c_twitroom, 0, "", 0, 1, 0, VIEW_BBS);
-
- /* The "Local System Configuration" room doesn't need to be visible */
- if (CtdlGetRoomLock(&qrbuf, SYSCONFIGROOM) == 0) {
- qrbuf.QRflags2 |= QR2_SYSTEM;
- CtdlPutRoomLock(&qrbuf);
- }
-
- /* Aide needs to be public postable, else we're not RFC conformant. */
- if (CtdlGetRoomLock(&qrbuf, AIDEROOM) == 0) {
- qrbuf.QRflags2 |= QR2_SMTP_PUBLIC;
- CtdlPutRoomLock(&qrbuf);
- }
-
- syslog(LOG_INFO, "Seeding the pseudo-random number generator...\n");
+ syslog(LOG_INFO, "Seeding the pseudo-random number generator...");
urandom = fopen("/dev/urandom", "r");
if (urandom != NULL) {
- rv = fread(&seed, sizeof seed, 1, urandom);
- if (rv == -1)
- syslog(LOG_EMERG, "failed to read random seed: %s\n",
- strerror(errno));
+ if (fread(&seed, sizeof seed, 1, urandom) == -1) {
+ syslog(LOG_ERR, "citserver: failed to read random seed: %m");
+ }
fclose(urandom);
}
else {
}
srand(seed);
srandom(seed);
-
- put_config();
-
- syslog(LOG_DEBUG, "master_startup() finished\n");
}
-/*
- * Cleanup routine to be called when the server is shutting down.
- */
-void master_cleanup(int exitcode) {
- struct CleanupFunctionHook *fcn;
- static int already_cleaning_up = 0;
+// Various things that need to be initialized at startup
+void master_startup(void) {
+ struct ctdlroom qrbuf;
+ struct passwd *pw;
+ gid_t gid;
- if (already_cleaning_up) while(1) usleep(1000000);
- already_cleaning_up = 1;
+ syslog(LOG_DEBUG, "master_startup() started");
+ time(&server_startup_time);
- /* Run any cleanup routines registered by loadable modules */
- for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) {
- (*fcn->h_function_pointer)();
+ syslog(LOG_INFO, "Checking directory access");
+ if ((pw = getpwuid(ctdluid)) == NULL) {
+ gid = getgid();
+ }
+ else {
+ gid = pw->pw_gid;
}
- /* Close the AdjRefCount queue file */
- AdjRefCount(-1, 0);
+ if (create_run_directories(CTDLUID, gid) != 0) {
+ syslog(LOG_ERR, "citserver: failed to access and create directories");
+ exit(1);
+ }
+ syslog(LOG_INFO, "Opening databases");
+ open_databases();
- /* Do system-dependent stuff */
- sysdep_master_cleanup();
-
- /* Close databases */
- syslog(LOG_INFO, "Closing databases\n");
- close_databases();
+ // Load site-specific configuration
+ seed_random_number_generator(); // must be done before config system
+ syslog(LOG_INFO, "Initializing configuration system");
+ initialize_config_system();
+ validate_config();
+ migrate_legacy_control_record();
- /* If the operator requested a halt but not an exit, halt here. */
- if (shutdown_and_halt) {
- syslog(LOG_NOTICE, "citserver: Halting server without exiting.\n");
- fflush(stdout); fflush(stderr);
- while(1) {
- sleep(32767);
- }
+ // If we have an existing database that is older than version 928, reindex the user records.
+ // Unfortunately we cannot do this in serv_upgrade.c because it needs to happen VERY early during startup.
+ int existing_db = CtdlGetConfigInt("MM_hosted_upgrade_level");
+ if ( (existing_db > 0) && (existing_db < 928) ) {
+ ForEachUser(reindex_user_928, NULL);
}
-
- release_control();
-
- /* Now go away. */
- syslog(LOG_NOTICE, "citserver: Exiting with status %d\n", exitcode);
- fflush(stdout); fflush(stderr);
-
- if (restart_server != 0)
- exit(1);
- if ((running_as_daemon != 0) && ((exitcode == 0) ))
- exitcode = CTDLEXIT_SHUTDOWN;
- exit(exitcode);
-}
+ // Check floor reference counts
+ check_ref_counts();
+ syslog(LOG_INFO, "Creating base rooms (if necessary)");
+ CtdlCreateRoom(CtdlGetConfigStr("c_baseroom"), 0, "", 0, 1, 0, VIEW_BBS);
+ CtdlCreateRoom(AIDEROOM, 3, "", 0, 1, 0, VIEW_BBS);
+ CtdlCreateRoom(SYSCONFIGROOM, 3, "", 0, 1, 0, VIEW_BBS);
+ CtdlCreateRoom(CtdlGetConfigStr("c_twitroom"), 0, "", 0, 1, 0, VIEW_BBS);
-/*
- * returns an asterisk if there are any instant messages waiting,
- * space otherwise.
- */
-char CtdlCheckExpress(void) {
- if (CC->FirstExpressMessage == NULL) {
- return(' ');
+ // The "Local System Configuration" room doesn't need to be visible
+ if (CtdlGetRoomLock(&qrbuf, SYSCONFIGROOM) == 0) {
+ qrbuf.QRflags2 |= QR2_SYSTEM;
+ CtdlPutRoomLock(&qrbuf);
}
- else {
- return('*');
+
+ // Aide needs to be public postable, else we're not RFC conformant.
+ if (CtdlGetRoomLock(&qrbuf, AIDEROOM) == 0) {
+ qrbuf.QRflags2 |= QR2_SMTP_PUBLIC;
+ CtdlPutRoomLock(&qrbuf);
}
+
+ syslog(LOG_DEBUG, "master_startup() finished");
}
-/*
- * Check originating host against the public_clients file. This determines
- * whether the client is allowed to change the hostname for this session
- * (for example, to show the location of the user rather than the location
- * of the client).
- */
-int CtdlIsPublicClient(void)
-{
- char buf[1024];
- char addrbuf[1024];
- FILE *fp;
- int i;
- char *public_clientspos;
- char *public_clientsend;
- char *paddr = NULL;
- struct stat statbuf;
- static time_t pc_timestamp = 0;
- static char public_clients[SIZ];
- static char public_clients_file[SIZ];
-
-#define LOCALHOSTSTR "127.0.0.1"
-
- snprintf(public_clients_file, sizeof public_clients_file, "%s/public_clients", ctdl_etc_dir);
-
- /*
- * Check the time stamp on the public_clients file. If it's been
- * updated since the last time we were here (or if this is the first
- * time we've been through the loop), read its contents and learn
- * the IP addresses of the listed hosts.
- */
- if (stat(public_clients_file, &statbuf) != 0) {
- /* No public_clients file exists, so bail out */
- syslog(LOG_WARNING, "Warning: '%s' does not exist\n",
- public_clients_file);
- return(0);
- }
+// Cleanup routine to be called when the server is shutting down. Returns the needed exit code.
+int master_cleanup(int exitcode) {
+ static int already_cleaning_up = 0;
- if (statbuf.st_mtime > pc_timestamp) {
- begin_critical_section(S_PUBLIC_CLIENTS);
- syslog(LOG_INFO, "Loading %s\n", public_clients_file);
-
- public_clientspos = &public_clients[0];
- public_clientsend = public_clientspos + SIZ;
- safestrncpy(public_clientspos, LOCALHOSTSTR, sizeof public_clients);
- public_clientspos += sizeof(LOCALHOSTSTR) - 1;
-
- if (hostname_to_dotted_quad(addrbuf, config.c_fqdn) == 0) {
- *(public_clientspos++) = '|';
- paddr = &addrbuf[0];
- while (!IsEmptyStr (paddr) &&
- (public_clientspos < public_clientsend))
- *(public_clientspos++) = *(paddr++);
+ if (already_cleaning_up) {
+ while (1) {
+ usleep(1000000);
}
-
- fp = fopen(public_clients_file, "r");
- if (fp != NULL)
- while ((fgets(buf, sizeof buf, fp)!=NULL) &&
- (public_clientspos < public_clientsend)){
- char *ptr;
- ptr = buf;
- while (!IsEmptyStr(ptr)) {
- if (*ptr == '#') {
- *ptr = 0;
- break;
- }
- else ptr++;
- }
- ptr--;
- while (ptr>buf && isspace(*ptr)) {
- *(ptr--) = 0;
- }
- if (hostname_to_dotted_quad(addrbuf, buf) == 0) {
- *(public_clientspos++) = '|';
- paddr = addrbuf;
- while (!IsEmptyStr(paddr) &&
- (public_clientspos < public_clientsend)){
- *(public_clientspos++) = *(paddr++);
- }
- }
- }
- if (fp != NULL) fclose(fp);
- pc_timestamp = time(NULL);
- end_critical_section(S_PUBLIC_CLIENTS);
}
+ already_cleaning_up = 1;
+
+ // Do system-dependent stuff
+ sysdep_master_cleanup();
+
+ // Close the configuration system
+ shutdown_config_system();
+
+ // Close databases
+ syslog(LOG_INFO, "citserver: closing databases");
+ close_databases();
- syslog(LOG_DEBUG, "Checking whether %s is a local or public client\n",
- CC->cs_addr);
- for (i=0; i<num_parms(public_clients); ++i) {
- extract_token(addrbuf, public_clients, i, '|', sizeof addrbuf);
- if (!strcasecmp(CC->cs_addr, addrbuf)) {
- syslog(LOG_DEBUG, "... yes its local.\n");
- return(1);
+ // If the operator requested a halt but not an exit, halt here.
+ if (shutdown_and_halt) {
+ syslog(LOG_ERR, "citserver: Halting server without exiting.");
+ fflush(stdout);
+ fflush(stderr);
+ while (1) {
+ sleep(32767);
}
}
- /* No hits. This is not a public client. */
- syslog(LOG_DEBUG, "... no it isn't.\n");
- return(0);
-}
+ // Now go away.
+ syslog(LOG_ERR, "citserver: Exiting with status %d", exitcode);
+ fflush(stdout);
+ fflush(stderr);
+ if (restart_server != 0) {
+ exitcode = 1;
+ }
+ else if ((running_as_daemon != 0) && ((exitcode == 0))) {
+ exitcode = CTDLEXIT_SHUTDOWN;
+ }
+ return (exitcode);
+}
+// returns an asterisk if there are any instant messages waiting, space otherwise.
+char CtdlCheckExpress(void) {
+ if (CC->FirstExpressMessage == NULL) {
+ return (' ');
+ }
+ else {
+ return ('*');
+ }
+}
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,
- config.c_nodename, config.c_maxsessions
+ if (CC->nologin == 1) {
+ cprintf("%d Too many users are already online (maximum is %d)\n",
+ ERROR + MAX_SESSIONS_EXCEEDED, CtdlGetConfigInt("c_maxsessions")
);
CC->kill_me = KILLME_MAX_SESSIONS_EXCEEDED;
}
else {
- cprintf("%d %s Citadel server ready.\n", CIT_OK, config.c_nodename);
+ cprintf("%d %s Citadel server ready.\n", CIT_OK, CtdlGetConfigStr("c_fqdn"));
CC->can_receive_im = 1;
}
}
void citproto_begin_admin_session() {
CC->internal_pgm = 1;
- cprintf("%d %s Citadel server ADMIN CONNECTION ready.\n", CIT_OK, config.c_nodename);
+ cprintf("%d %s Citadel server ADMIN CONNECTION ready.\n", CIT_OK, CtdlGetConfigStr("c_fqdn"));
}
-
-
-/*
- * This loop recognizes all server commands.
- */
-void do_command_loop(void) {
- char cmdbuf[SIZ];
-
- time(&CC->lastcmd);
- memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
- if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
- syslog(LOG_ERR, "Citadel client disconnected: ending session.\n");
- CC->kill_me = KILLME_CLIENT_DISCONNECTED;
- return;
- }
-
- /* Log the server command, but don't show passwords... */
- if ( (strncasecmp(cmdbuf, "PASS", 4)) && (strncasecmp(cmdbuf, "SETP", 4)) ) {
- syslog(LOG_INFO, "[%d][%s(%ld)] %s",
- CC->cs_pid, CC->curr_user, CC->user.usernum, cmdbuf
- );
- }
- else {
- syslog(LOG_INFO, "[%d][%s(%ld)] <password command hidden from log>",
- CC->cs_pid, CC->curr_user, CC->user.usernum
- );
- }
-
- buffer_output();
-
- /*
- * Let other clients see the last command we executed, and
- * update the idle time, but not NOOP, QNOP, PEXP, GEXP, RWHO, or TIME.
- */
- if ( (strncasecmp(cmdbuf, "NOOP", 4))
- && (strncasecmp(cmdbuf, "QNOP", 4))
- && (strncasecmp(cmdbuf, "PEXP", 4))
- && (strncasecmp(cmdbuf, "GEXP", 4))
- && (strncasecmp(cmdbuf, "RWHO", 4))
- && (strncasecmp(cmdbuf, "TIME", 4)) ) {
- strcpy(CC->lastcmdname, " ");
- safestrncpy(CC->lastcmdname, cmdbuf, sizeof(CC->lastcmdname));
- time(&CC->lastidle);
- }
-
- if ((strncasecmp(cmdbuf, "ENT0", 4))
- && (strncasecmp(cmdbuf, "MESG", 4))
- && (strncasecmp(cmdbuf, "MSGS", 4)))
- {
- CC->cs_flags &= ~CS_POSTING;
- }
-
- if (!DLoader_Exec_Cmd(cmdbuf)) {
- cprintf("%d Unrecognized or unsupported command.\n", ERROR + CMD_NOT_SUPPORTED);
- }
-
- unbuffer_output();
-
- /* Run any after-each-command routines registered by modules */
- PerformSessionHooks(EVT_CMD);
-}
-
-
-/*
- * This loop performs all asynchronous functions.
- */
+// This loop performs all asynchronous functions.
void do_async_loop(void) {
PerformSessionHooks(EVT_ASYNC);
}
-
projects / citadel.git / blobdiff