X-Git-Url: https://code.citadel.org/?p=citadel.git;a=blobdiff_plain;f=citadel%2Fcitserver.c;h=b9648f6f70a3ba3b3b5759e992d1069477583070;hp=2b5b72b77f85b2e56ecda82e6697e13e42ca926f;hb=5ac2920028e92a453c686c799327d7a66b3e7b49;hpb=f6a1144d644e7f3b8eb2581dab2443b81a699994 diff --git a/citadel/citserver.c b/citadel/citserver.c index 2b5b72b77..b9648f6f7 100644 --- a/citadel/citserver.c +++ b/citadel/citserver.c @@ -1,7 +1,7 @@ /* * Main source module for the Citadel server * - * Copyright (c) 1987-2011 by the citadel.org team + * Copyright (c) 1987-2020 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. @@ -12,65 +12,21 @@ * GNU General Public License for more details. */ -#include "sysdep.h" #include #include #include -#include -#include -#include #include - -#if TIME_WITH_SYS_TIME -# include -# include -#else -# if HAVE_SYS_TIME_H -# include -# else -# include -# endif -#endif - -#if HAVE_BACKTRACE -#include -#endif - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include +#include "sysdep.h" +#include #include -#include "citadel.h" -#include "server.h" -#include "sysdep_decls.h" -#include "threads.h" -#include "citserver.h" -#include "config.h" -#include "database.h" + +#include "ctdl_module.h" #include "housekeeping.h" -#include "user_ops.h" -#include "msgbase.h" -#include "support.h" #include "locate_host.h" -#include "room_ops.h" -#include "file_ops.h" +#include "citserver.h" +#include "user_ops.h" #include "control.h" -#include "euidindex.h" -#include "context.h" -#include "svn_revision.h" - -#ifndef HAVE_SNPRINTF -#include "snprintf.h" -#endif - -#include "ctdl_module.h" +#include "config.h" char *unique_session_numbers; int ScheduledShutdown = 0; @@ -78,240 +34,141 @@ time_t server_startup_time; 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; - - - 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 -} - -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\n", 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) { +void master_startup(void) +{ struct timeval tv; unsigned int seed; FILE *urandom; struct ctdlroom qrbuf; int rv; - - syslog(LOG_DEBUG, "master_startup() started\n"); + struct passwd *pw; + gid_t gid; + + syslog(LOG_DEBUG, "master_startup() started"); time(&server_startup_time); - get_config(); - syslog(LOG_INFO, "Opening databases\n"); + syslog(LOG_INFO, "Checking directory access"); + if ((pw = getpwuid(ctdluid)) == NULL) { + gid = getgid(); + } else { + gid = pw->pw_gid; + } + + if (create_run_directories(CTDLUID, gid) != 0) { + syslog(LOG_EMERG, "failed to access & create directories"); + exit(1); + } + syslog(LOG_INFO, "Opening databases"); open_databases(); + + /* Load site-specific configuration */ + syslog(LOG_INFO, "Initializing configuration system"); + initialize_config_system(); + validate_config(); + migrate_legacy_control_record(); + + // 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); + } + + /* Check floor reference counts */ 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); + 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); /* The "Local System Configuration" room doesn't need to be visible */ - if (CtdlGetRoomLock(&qrbuf, SYSCONFIGROOM) == 0) { - qrbuf.QRflags2 |= QR2_SYSTEM; - CtdlPutRoomLock(&qrbuf); - } + 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); - } + 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 (rv == -1) { + syslog(LOG_ERR, "citserver: failed to read random seed: %m"); + } fclose(urandom); - } - else { + } else { gettimeofday(&tv, NULL); seed = tv.tv_usec; } srand(seed); srandom(seed); - put_config(); - - syslog(LOG_DEBUG, "master_startup() finished\n"); + syslog(LOG_DEBUG, "master_startup() finished"); } /* - * Cleanup routine to be called when the server is shutting down. + * Cleanup routine to be called when the server is shutting down. Returns the needed exit code. */ -void master_cleanup(int exitcode) { +int master_cleanup(int exitcode) +{ struct CleanupFunctionHook *fcn; static int already_cleaning_up = 0; - if (already_cleaning_up) while(1) usleep(1000); + if (already_cleaning_up) { + while (1) { + usleep(1000000); + } + } already_cleaning_up = 1; /* Run any cleanup routines registered by loadable modules */ for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) { - (*fcn->h_function_pointer)(); + (*fcn->h_function_pointer) (); } - /* Close the AdjRefCount queue file */ - AdjRefCount(-1, 0); - /* Do system-dependent stuff */ sysdep_master_cleanup(); - + + /* Close the configuration system */ + shutdown_config_system(); + /* Close databases */ syslog(LOG_INFO, "Closing databases\n"); close_databases(); /* 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) { + syslog(LOG_ERR, "citserver: Halting server without exiting."); + fflush(stdout); + fflush(stderr); + while (1) { sleep(32767); } } - - 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); -} - - + syslog(LOG_ERR, "citserver: Exiting with status %d", exitcode); + fflush(stdout); + fflush(stderr); -/* - * cmd_info() - tell the client about this server - */ -void cmd_info(char *cmdbuf) { - cprintf("%d Server info:\n", LISTING_FOLLOWS); - cprintf("%d\n", CC->cs_pid); - cprintf("%s\n", config.c_nodename); - cprintf("%s\n", config.c_humannode); - cprintf("%s\n", config.c_fqdn); - cprintf("%s\n", CITADEL); - cprintf("%d\n", REV_LEVEL); - cprintf("%s\n", config.c_site_location); - cprintf("%s\n", config.c_sysadm); - cprintf("%d\n", SERVER_TYPE); - cprintf("%s\n", config.c_moreprompt); - cprintf("1\n"); /* 1 = yes, this system supports floors */ - cprintf("1\n"); /* 1 = we support the extended paging options */ - cprintf("\n"); /* nonce no longer supported */ - cprintf("1\n"); /* 1 = yes, this system supports the QNOP command */ - -#ifdef HAVE_LDAP - cprintf("1\n"); /* 1 = yes, this server is LDAP-enabled */ -#else - cprintf("0\n"); /* 1 = no, this server is not LDAP-enabled */ -#endif - - if (config.c_auth_mode == AUTHMODE_NATIVE) { - cprintf("%d\n", config.c_disable_newu); - } - else { - cprintf("1\n"); /* "create new user" does not work with non-native auth modes */ - } - - cprintf("%s\n", config.c_default_cal_zone); - - /* thread load averages -- temporarily disabled during refactoring of this code */ - cprintf("0\n"); /* load average */ - cprintf("0\n"); /* worker average */ - cprintf("0\n"); /* thread count */ - - cprintf("1\n"); /* yes, Sieve mail filtering is supported */ - cprintf("%d\n", config.c_enable_fulltext); - cprintf("%s\n", svn_revision()); - - if (config.c_auth_mode == AUTHMODE_NATIVE) { - cprintf("%d\n", openid_level_supported); /* OpenID is enabled when using native auth */ - } - else { - cprintf("0\n"); /* OpenID is disabled when using non-native auth */ + if (restart_server != 0) { + exitcode = 1; + } else if ((running_as_daemon != 0) && ((exitcode == 0))) { + exitcode = CTDLEXIT_SHUTDOWN; } - - cprintf("%d\n", config.c_guest_logins); - - cprintf("000\n"); + return (exitcode); } @@ -319,770 +176,41 @@ void cmd_info(char *cmdbuf) { * returns an asterisk if there are any instant messages waiting, * space otherwise. */ -char CtdlCheckExpress(void) { - if (CC->FirstExpressMessage == NULL) { - return(' '); - } - else { - return('*'); - } -} - -void cmd_time(char *argbuf) -{ - time_t tv; - struct tm tmp; - - tv = time(NULL); - localtime_r(&tv, &tmp); - - /* timezone and daylight global variables are not portable. */ -#ifdef HAVE_STRUCT_TM_TM_GMTOFF - cprintf("%d %ld|%ld|%d|%ld\n", CIT_OK, (long)tv, tmp.tm_gmtoff, tmp.tm_isdst, server_startup_time); -#else - cprintf("%d %ld|%ld|%d|%ld\n", CIT_OK, (long)tv, timezone, tmp.tm_isdst, server_startup_time); -#endif -} - - -/* - * 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 is_public_client(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); - } - - 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++); - } - - 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++); - } - } - } - fclose(fp); - pc_timestamp = time(NULL); - end_critical_section(S_PUBLIC_CLIENTS); - } - - syslog(LOG_DEBUG, "Checking whether %s is a local or public client\n", - CC->cs_addr); - for (i=0; ics_addr, addrbuf)) { - syslog(LOG_DEBUG, "... yes its local.\n"); - return(1); - } - } - - /* No hits. This is not a public client. */ - syslog(LOG_DEBUG, "... no it isn't.\n"); - return(0); -} - - -/* - * the client is identifying itself to the server - */ -void cmd_iden(char *argbuf) -{ - int dev_code; - int cli_code; - int rev_level; - char desc[128]; - char from_host[128]; - - if (num_parms(argbuf)<4) { - cprintf("%d usage error\n", ERROR + ILLEGAL_VALUE); - return; - } - - dev_code = extract_int(argbuf,0); - cli_code = extract_int(argbuf,1); - rev_level = extract_int(argbuf,2); - extract_token(desc, argbuf, 3, '|', sizeof desc); - - safestrncpy(from_host, config.c_fqdn, sizeof from_host); - from_host[sizeof from_host - 1] = 0; - if (num_parms(argbuf)>=5) extract_token(from_host, argbuf, 4, '|', sizeof from_host); - - CC->cs_clientdev = dev_code; - CC->cs_clienttyp = cli_code; - CC->cs_clientver = rev_level; - safestrncpy(CC->cs_clientname, desc, sizeof CC->cs_clientname); - CC->cs_clientname[31] = 0; - - /* For local sockets and public clients, trust the hostname supplied by the client */ - if ( (CC->is_local_socket) || (is_public_client()) ) { - safestrncpy(CC->cs_host, from_host, sizeof CC->cs_host); - CC->cs_host[sizeof CC->cs_host - 1] = 0; - CC->cs_addr[0] = 0; - } - - syslog(LOG_NOTICE, "Client %d/%d/%01d.%02d (%s) from %s\n", - dev_code, - cli_code, - (rev_level / 100), - (rev_level % 100), - desc, - CC->cs_host - ); - cprintf("%d Ok\n",CIT_OK); -} - -typedef const char *ccharp; -/* - * display system messages or help - */ -void cmd_mesg(char *mname) -{ - FILE *mfp; - char targ[256]; - char buf[256]; - char buf2[256]; - char *dirs[2]; - DIR *dp; - struct dirent *d; - - extract_token(buf, mname, 0, '|', sizeof buf); - - dirs[0] = strdup(ctdl_message_dir); - dirs[1] = strdup(ctdl_hlp_dir); - - snprintf(buf2, sizeof buf2, "%s.%d.%d", - buf, CC->cs_clientdev, CC->cs_clienttyp); - - /* If the client requested "?" then produce a listing */ - if (!strcmp(buf, "?")) { - cprintf("%d %s\n", LISTING_FOLLOWS, buf); - dp = opendir(dirs[1]); - if (dp != NULL) { - while (d = readdir(dp), d != NULL) { - if (d->d_name[0] != '.') { - cprintf(" %s\n", d->d_name); - } - } - closedir(dp); - } - cprintf("000\n"); - free(dirs[0]); - free(dirs[1]); - return; - } - - /* Otherwise, look for the requested file by name. */ - else { - mesg_locate(targ, sizeof targ, buf2, 2, (const ccharp*)dirs); - if (IsEmptyStr(targ)) { - snprintf(buf2, sizeof buf2, "%s.%d", - buf, CC->cs_clientdev); - mesg_locate(targ, sizeof targ, buf2, 2, - (const ccharp*)dirs); - if (IsEmptyStr(targ)) { - mesg_locate(targ, sizeof targ, buf, 2, - (const ccharp*)dirs); - } - } - } - - free(dirs[0]); - free(dirs[1]); - - if (IsEmptyStr(targ)) { - cprintf("%d '%s' not found. (Searching in %s and %s)\n", - ERROR + FILE_NOT_FOUND, - mname, - ctdl_message_dir, - ctdl_hlp_dir - ); - return; - } - - mfp = fopen(targ, "r"); - if (mfp==NULL) { - cprintf("%d Cannot open '%s': %s\n", - ERROR + INTERNAL_ERROR, targ, strerror(errno)); - return; - } - cprintf("%d %s\n", LISTING_FOLLOWS,buf); - - while (fgets(buf, (sizeof buf - 1), mfp) != NULL) { - buf[strlen(buf)-1] = 0; - do_help_subst(buf); - cprintf("%s\n",buf); - } - - fclose(mfp); - cprintf("000\n"); -} - - -/* - * enter system messages or help - */ -void cmd_emsg(char *mname) -{ - FILE *mfp; - char targ[256]; - char buf[256]; - char *dirs[2]; - int a; - - unbuffer_output(); - - if (CtdlAccessCheck(ac_aide)) return; - - extract_token(buf, mname, 0, '|', sizeof buf); - for (a=0; !IsEmptyStr(&buf[a]); ++a) { /* security measure */ - if (buf[a] == '/') buf[a] = '.'; - } - - dirs[0] = strdup(ctdl_message_dir); - dirs[1] = strdup(ctdl_hlp_dir); - - mesg_locate(targ, sizeof targ, buf, 2, (const ccharp*)dirs); - free(dirs[0]); - free(dirs[1]); - - if (IsEmptyStr(targ)) { - snprintf(targ, sizeof targ, - "%s/%s", - ctdl_hlp_dir, buf); - } - - mfp = fopen(targ,"w"); - if (mfp==NULL) { - cprintf("%d Cannot open '%s': %s\n", - ERROR + INTERNAL_ERROR, targ, strerror(errno)); - return; - } - cprintf("%d %s\n", SEND_LISTING, targ); - - while (client_getln(buf, sizeof buf) >=0 && strcmp(buf, "000")) { - fprintf(mfp, "%s\n", buf); - } - - fclose(mfp); -} - - -/* Don't show the names of private rooms unless the viewing - * user also knows the rooms. - */ -void GenerateRoomDisplay(char *real_room, - CitContext *viewed, - CitContext *viewer) { - - int ra; - - strcpy(real_room, viewed->room.QRname); - if (viewed->room.QRflags & QR_MAILBOX) { - strcpy(real_room, &real_room[11]); - } - if (viewed->room.QRflags & QR_PRIVATE) { - CtdlRoomAccess(&viewed->room, &viewer->user, &ra, NULL); - if ( (ra & UA_KNOWN) == 0) { - strcpy(real_room, " "); - } - } - - if (viewed->cs_flags & CS_CHAT) { - while (strlen(real_room) < 14) { - strcat(real_room, " "); - } - strcpy(&real_room[14], ""); - } - -} - -/* - * Convenience function. - */ -int CtdlAccessCheck(int required_level) { - - if (CC->internal_pgm) return(0); - if (required_level >= ac_internal) { - cprintf("%d This is not a user-level command.\n", - ERROR + HIGHER_ACCESS_REQUIRED); - return(-1); - } - - if ((required_level >= ac_logged_in_or_guest) && (CC->logged_in == 0) && (!config.c_guest_logins)) { - cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN); - return(-1); - } - - if ((required_level >= ac_logged_in) && (CC->logged_in == 0)) { - cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN); - return(-1); - } - - if (CC->user.axlevel >= AxAideU) return(0); - if (required_level >= ac_aide) { - cprintf("%d This command requires Aide access.\n", - ERROR + HIGHER_ACCESS_REQUIRED); - return(-1); - } - - if (is_room_aide()) return(0); - if (required_level >= ac_room_aide) { - cprintf("%d This command requires Aide or Room Aide access.\n", - ERROR + HIGHER_ACCESS_REQUIRED); - return(-1); - } - - /* shhh ... succeed quietly */ - return(0); -} - - - -/* - * Terminate another running session - */ -void cmd_term(char *cmdbuf) -{ - int session_num; - int terminated = 0; - - if (CtdlAccessCheck(ac_aide)) return; - - session_num = extract_int(cmdbuf, 0); - - terminated = CtdlTerminateOtherSession(session_num); - - if (terminated < 0) { - cprintf("%d You can't kill your own session.\n", ERROR + ILLEGAL_VALUE); - return; - } - - if (terminated & TERM_FOUND) { - if (terminated == TERM_KILLED) { - cprintf("%d Session terminated.\n", CIT_OK); - } - else { - cprintf("%d You are not allowed to do that.\n", - ERROR + HIGHER_ACCESS_REQUIRED); - } - } - else { - cprintf("%d No such session.\n", ERROR + ILLEGAL_VALUE); - } -} - - -/* - * get the paginator prompt - */ -void cmd_more(char *argbuf) { - cprintf("%d %s\n", CIT_OK, config.c_moreprompt); -} - - -/* - * echo - */ -void cmd_echo(char *etext) -{ - cprintf("%d %s\n", CIT_OK, etext); -} - - - -/* - * Shut down the server - */ -void cmd_down(char *argbuf) { - char *Reply ="%d Shutting down server. Goodbye.\n"; - - if (CtdlAccessCheck(ac_aide)) return; - - if (!IsEmptyStr(argbuf)) - { - int state = CIT_OK; - restart_server = extract_int(argbuf, 0); - - if (restart_server > 0) - { - Reply = "%d citserver will now shut down and automatically restart.\n"; - } - if ((restart_server > 0) && !running_as_daemon) - { - syslog(LOG_ERR, "The user requested restart, but not running as daemon! Geronimooooooo!\n"); - Reply = "%d Warning: citserver is not running in daemon mode and is therefore unlikely to restart automatically.\n"; - state = ERROR; - } - cprintf(Reply, state); - } - else - { - cprintf(Reply, CIT_OK + SERVER_SHUTTING_DOWN); - } - CC->kill_me = KILLME_SERVER_SHUTTING_DOWN; - server_shutting_down = 1; -} - - -/* - * Halt the server without exiting the server process. - */ -void cmd_halt(char *argbuf) { - - if (CtdlAccessCheck(ac_aide)) return; - - cprintf("%d Halting server. Goodbye.\n", CIT_OK); - server_shutting_down = 1; - shutdown_and_halt = 1; -} - - -/* - * Schedule or cancel a server shutdown - */ -void cmd_scdn(char *argbuf) -{ - int new_state; - int state = CIT_OK; - char *Reply = "%d %d\n"; - - if (CtdlAccessCheck(ac_aide)) return; - - new_state = extract_int(argbuf, 0); - if ((new_state == 2) || (new_state == 3)) - { - restart_server = 1; - if (!running_as_daemon) - { - syslog(LOG_ERR, "The user requested restart, but not running as deamon! Geronimooooooo!\n"); - Reply = "%d %d Warning, not running in deamon mode. maybe we will come up again, but don't lean on it.\n"; - state = ERROR; - } - - restart_server = extract_int(argbuf, 0); - new_state -= 2; - } - if ((new_state == 0) || (new_state == 1)) { - ScheduledShutdown = new_state; - } - cprintf(Reply, state, ScheduledShutdown); -} - - -/* - * Set or unset asynchronous protocol mode - */ -void cmd_asyn(char *argbuf) +char CtdlCheckExpress(void) { - int new_state; - - new_state = extract_int(argbuf, 0); - if ((new_state == 0) || (new_state == 1)) { - CC->is_async = new_state; + if (CC->FirstExpressMessage == NULL) { + return (' '); + } else { + return ('*'); } - cprintf("%d %d\n", CIT_OK, CC->is_async); } - -/* - * Back-end function for starting a session - */ -void begin_session(CitContext *con) +void citproto_begin_session() { - /* - * Initialize some variables specific to our context. - */ - con->logged_in = 0; - con->internal_pgm = 0; - con->download_fp = NULL; - con->upload_fp = NULL; - con->cached_msglist = NULL; - con->cached_num_msgs = 0; - con->FirstExpressMessage = NULL; - time(&con->lastcmd); - time(&con->lastidle); - 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, config.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) { - locate_host(con->cs_host, sizeof con->cs_host, - con->cs_addr, sizeof con->cs_addr, - con->client_socket - ); - } - else { - con->cs_host[0] = 0; - con->cs_addr[0] = 0; -#ifdef HAVE_STRUCT_UCRED - { - /* as http://www.wsinnovations.com/softeng/articles/uds.html told us... */ - struct ucred credentials; - socklen_t ucred_length = sizeof(struct ucred); - - /*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"); - - } - else { - /* the process ID of the process on the other side of the socket */ - /* credentials.pid; */ - - /* the effective UID of the process on the other side of the socket */ - con->cs_UDSclientUID = credentials.uid; - - /* the effective primary GID of the process on the other side of the socket */ - /* credentials.gid; */ - - /* To get supplemental groups, we will have to look them up in our account - database, after a reverse lookup on the UID to get the account name. - We can take this opportunity to check to see if this is a legit account. - */ - snprintf(con->cs_clientinfo, sizeof(con->cs_clientinfo), - "PID: "F_PID_T"; UID: "F_UID_T"; GID: "F_XPID_T" ", - credentials.pid, - credentials.uid, - credentials.gid); - } - } -#endif - } - con->cs_flags = 0; - con->upload_type = UPL_FILE; - con->dl_is_net = 0; - - con->nologin = 0; - if (((config.c_maxsessions > 0)&&(num_sessions > config.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); - } - - /* Run any session startup routines registered by loadable modules */ - PerformSessionHooks(EVT_START); -} - - -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); + } else { + 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); -} - - -void cmd_noop(char *argbuf) -{ - cprintf("%d%cok\n", CIT_OK, CtdlCheckExpress() ); -} - - -void cmd_qnop(char *argbuf) +void citproto_begin_admin_session() { - /* do nothing, this command returns no response */ -} - - -void cmd_quit(char *argbuf) -{ - cprintf("%d Goodbye.\n", CIT_OK); - CC->kill_me = KILLME_CLIENT_LOGGED_OUT; -} - - -void cmd_lout(char *argbuf) -{ - if (CC->logged_in) - CtdlUserLogout(); - cprintf("%d logged out.\n", CIT_OK); -} - - -/* - * 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)]