X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fcitserver.c;h=3530e848ab6b10722ada2f734c5845f3256530d6;hb=5ac2920028e92a453c686c799327d7a66b3e7b49;hp=89c9538b2301fdfec5ba27fe19801710304ba770;hpb=e612033104c17c8adcad19d7dc8efbafa8b33f2e;p=citadel.git diff --git a/citadel/citserver.c b/citadel/citserver.c index 89c9538b2..b9648f6f7 100644 --- a/citadel/citserver.c +++ b/citadel/citserver.c @@ -1,263 +1,174 @@ /* - * $Id$ - * * Main source module for the Citadel server * + * 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. + * + * 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 #include #include -#include -#include -#include #include +#include "sysdep.h" +#include +#include - -#if TIME_WITH_SYS_TIME -# include -# include -#else -# if HAVE_SYS_TIME_H -# include -# else -# include -# endif -#endif - -#include -#include -#include -#include -#include -/* #include */ -#include -#include -#include -#include -#include -#include "citadel.h" -#include "server.h" -#include "serv_extensions.h" -#include "sysdep_decls.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 "policy.h" +#include "citserver.h" +#include "user_ops.h" #include "control.h" -#include "tools.h" -#include "euidindex.h" - -#ifndef HAVE_SNPRINTF -#include "snprintf.h" -#endif +#include "config.h" -struct CitContext *ContextList = NULL; -struct CitContext* next_session = NULL; char *unique_session_numbers; int ScheduledShutdown = 0; -int do_defrag = 0; time_t server_startup_time; -char pid_file_name[PATH_MAX]; +int panic_fd; +int openid_level_supported = 0; + /* * 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; - FILE *pidfile_fp; - - lprintf(CTDL_DEBUG, "master_startup() started\n"); + int rv; + struct passwd *pw; + gid_t gid; + + syslog(LOG_DEBUG, "master_startup() started"); time(&server_startup_time); - /* pid file. If we go FSSTND this should end up in 'localstatedir' */ - snprintf(pid_file_name, sizeof pid_file_name, "./citadel.pid"); - pidfile_fp = fopen(pid_file_name, "w"); - if (pidfile_fp != NULL) { - fprintf(pidfile_fp, "%d\n", (int)getpid()); - fclose(pidfile_fp); + syslog(LOG_INFO, "Checking directory access"); + if ((pw = getpwuid(ctdluid)) == NULL) { + gid = getgid(); + } else { + gid = pw->pw_gid; } - lprintf(CTDL_INFO, "Opening databases\n"); + if (create_run_directories(CTDLUID, gid) != 0) { + syslog(LOG_EMERG, "failed to access & create directories"); + exit(1); + } + syslog(LOG_INFO, "Opening databases"); open_databases(); - if (do_defrag) { - defrag_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(); - lprintf(CTDL_INFO, "Creating base rooms (if necessary)\n"); - create_room(config.c_baseroom, 0, "", 0, 1, 0, VIEW_BBS); - create_room(AIDEROOM, 3, "", 0, 1, 0, VIEW_BBS); - create_room(SYSCONFIGROOM, 3, "", 0, 1, 0, VIEW_BBS); - create_room(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 (lgetroom(&qrbuf, SYSCONFIGROOM) == 0) { - qrbuf.QRflags2 |= QR2_SYSTEM; - lputroom(&qrbuf); - } - - /* - * Create a room in which we can deposit "deleted" messages for - * deferred deletion. This will silently fail if the room already - * exists, and that's perfectly ok, because we want it to exist. - */ - create_room(DELETED_MSGS_ROOM, 3, "", 0, 1, 0, VIEW_MAILBOX); - - /* - * Make sure it's set to be a "system room" so it doesn't show up - * in the nown rooms list for Aides. Also set the message expire - * policy to "by count, 1 message" so everything gets deleted all - * the time (we can't set it to 0 because that's invalid, so we keep - * a single message around). - */ - if (lgetroom(&qrbuf, DELETED_MSGS_ROOM) == 0) { + if (CtdlGetRoomLock(&qrbuf, SYSCONFIGROOM) == 0) { qrbuf.QRflags2 |= QR2_SYSTEM; - qrbuf.QRep.expire_mode = EXPIRE_NUMMSGS; - qrbuf.QRep.expire_value = 1; - lputroom(&qrbuf); + CtdlPutRoomLock(&qrbuf); } - lprintf(CTDL_INFO, "Seeding the pseudo-random number generator...\n"); + /* 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..."); urandom = fopen("/dev/urandom", "r"); if (urandom != NULL) { - fread(&seed, sizeof seed, 1, urandom); + rv = fread(&seed, sizeof seed, 1, urandom); + 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); - lprintf(CTDL_INFO, "Initializing ipgm secret\n"); - get_config(); - config.c_ipgm_secret = rand(); - put_config(); - - lprintf(CTDL_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) sleep(1); + 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) (); } - /* Shut down the indexer thread */ - lprintf(CTDL_INFO, "Waiting for the indexer thread to shut down\n"); - pthread_join(indexer_thread_tid, NULL); + /* Do system-dependent stuff */ + sysdep_master_cleanup(); - /* Shut down the checkpoint thread */ - lprintf(CTDL_INFO, "Waiting for the checkpoint thread to shut down\n"); - pthread_join(checkpoint_thread_tid, NULL); + /* Close the configuration system */ + shutdown_config_system(); /* Close databases */ - lprintf(CTDL_INFO, "Closing databases\n"); + syslog(LOG_INFO, "Closing databases\n"); close_databases(); - /* Do system-dependent stuff */ - sysdep_master_cleanup(); - -#ifdef DEBUG_MEMORY_LEAKS - dump_heap(); -#endif + /* 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); + } + } /* Now go away. */ - lprintf(CTDL_NOTICE, "citserver: Exiting with status %d\n", exitcode); - fflush(stdout); fflush(stderr); - - unlink(pid_file_name); - exit(exitcode); -} - + syslog(LOG_ERR, "citserver: Exiting with status %d", exitcode); + fflush(stdout); + fflush(stderr); - -/* - * Terminate a session. - */ -void RemoveContext (struct CitContext *con) -{ - if (con==NULL) { - lprintf(CTDL_ERR, - "WARNING: RemoveContext() called with NULL!\n"); - return; + if (restart_server != 0) { + exitcode = 1; + } else if ((running_as_daemon != 0) && ((exitcode == 0))) { + exitcode = CTDLEXIT_SHUTDOWN; } - lprintf(CTDL_DEBUG, "RemoveContext() session %d\n", con->cs_pid); - - /* Run any cleanup routines registered by loadable modules. - * Note: 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(CTDL_DEBUG, "Calling logout(%d)\n", con->cs_pid); - logout(con); - - lprintf(CTDL_NOTICE, "[%3d] Session ended.\n", con->cs_pid); - - /* If the client is still connected, blow 'em away. */ - lprintf(CTDL_DEBUG, "Closing socket %d\n", con->client_socket); - close(con->client_socket); - - lprintf(CTDL_DEBUG, "Done with RemoveContext()\n"); -} - - - - - -/* - * cmd_info() - tell the client about this server - */ -void cmd_info(void) { - 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("%s\n", CC->cs_nonce); - 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 - cprintf("000\n"); + return (exitcode); } @@ -265,1023 +176,41 @@ void cmd_info(void) { * 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(void) -{ - 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\n", CIT_OK, (long)tv, tmp.tm_gmtoff, tmp.tm_isdst); -#else - cprintf("%d %ld|%ld|%d\n", CIT_OK, (long)tv, timezone, tmp.tm_isdst); -#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; - struct stat statbuf; - static time_t pc_timestamp = 0; - static char public_clients[SIZ]; - static char public_clients_file[SIZ]; - - 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 */ - lprintf(CTDL_WARNING, "Warning: '%s' does not exist\n", - public_clients_file); - return(0); - } - - if (statbuf.st_mtime > pc_timestamp) { - begin_critical_section(S_PUBLIC_CLIENTS); - lprintf(CTDL_INFO, "Loading %s\n", public_clients_file); - - safestrncpy(public_clients, "127.0.0.1", sizeof public_clients); - if (hostname_to_dotted_quad(addrbuf, config.c_fqdn) == 0) { - strcat(public_clients, "|"); - strcat(public_clients, addrbuf); - } - - fp = fopen(public_clients_file, "r"); - if (fp != NULL) while (fgets(buf, sizeof buf, fp)!=NULL) { - for (i=0; ics_addr); - for (i=0; ics_addr, addrbuf)) { - lprintf(CTDL_DEBUG, "... yes it is.\n"); - return(1); - } - } - - /* No hits. This is not a public client. */ - lprintf(CTDL_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]; - struct in_addr addr; - int do_lookup = 0; - - 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; - - if (strlen(from_host) > 0) { - if (CC->is_local_socket) do_lookup = 1; - else if (is_public_client()) do_lookup = 1; - } - - if (do_lookup) { - lprintf(CTDL_DEBUG, "Looking up hostname '%s'\n", from_host); - if ((addr.s_addr = inet_addr(from_host)) != -1) { - locate_host(CC->cs_host, sizeof CC->cs_host, - NULL, 0, - &addr); - } - else { - safestrncpy(CC->cs_host, from_host, sizeof CC->cs_host); - CC->cs_host[sizeof CC->cs_host - 1] = 0; - } - } - - lprintf(CTDL_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); -} - - -/* - * 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 char **)dirs); - if (strlen(targ) == 0) { - snprintf(buf2, sizeof buf2, "%s.%d", - buf, CC->cs_clientdev); - mesg_locate(targ, sizeof targ, buf2, 2, - (const char **)dirs); - if (strlen(targ) == 0) { - mesg_locate(targ, sizeof targ, buf, 2, - (const char **)dirs); - } - } - } - - free(dirs[0]); - free(dirs[1]); - - if (strlen(targ)==0) { - cprintf("%d '%s' not found.\n",ERROR + FILE_NOT_FOUND, mname); - 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; aroom.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) && (CC->logged_in == 0)) { - cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN); - return(-1); - } - - if (CC->user.axlevel >= 6) 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; - struct CitContext *ccptr; - int found_it = 0; - int allowed = 0; - - session_num = extract_int(cmdbuf, 0); - if (session_num == CC->cs_pid) { - cprintf("%d You can't kill your own session.\n", ERROR + ILLEGAL_VALUE); - return; - } - - lprintf(CTDL_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) { - found_it = 1; - if ((ccptr->user.usernum == CC->user.usernum) - || (CC->user.axlevel >= 6)) { - allowed = 1; - ccptr->kill_me = 1; - } - else { - allowed = 0; - } - } - } - end_critical_section(S_SESSION_TABLE); - - if (found_it) { - if (allowed) { - 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(void) { - cprintf("%d %s\n", CIT_OK, config.c_moreprompt); -} - -/* - * echo - */ -void cmd_echo(char *etext) -{ - cprintf("%d %s\n", CIT_OK, etext); -} - - - -/* - * identify as internal program - */ -void cmd_ipgm(char *argbuf) -{ - int secret; - - secret = extract_int(argbuf, 0); - - /* For security reasons, we do NOT allow this command to run - * over the network. Local sockets only. - */ - if (!CC->is_local_socket) { - sleep(5); - cprintf("%d Authentication failed.\n", - ERROR + PASSWORD_REQUIRED); - } - else if (secret == config.c_ipgm_secret) { - CC->internal_pgm = 1; - strcpy(CC->curr_user, ""); - CC->cs_flags = CC->cs_flags|CS_STEALTH; - cprintf("%d Authenticated as an internal program.\n", CIT_OK); - } - else { - sleep(5); - cprintf("%d Authentication failed.\n", - ERROR + PASSWORD_REQUIRED); - lprintf(CTDL_ERR, "Warning: ipgm authentication failed.\n"); - CC->kill_me = 1; - } - - /* Now change the ipgm secret for the next round. - * (Disabled because it breaks concurrent scripts. The fact that - * we no longer accept IPGM over the network should be sufficient - * to prevent brute-force attacks. If you don't agree, uncomment - * this block.) - get_config(); - config.c_ipgm_secret = rand(); - put_config(); - */ -} - - -/* - * Shut down the server - */ -void cmd_down(void) { - - if (CtdlAccessCheck(ac_aide)) return; - - cprintf("%d Shutting down server. Goodbye.\n", CIT_OK); - time_to_die = 1; -} - -/* - * Schedule or cancel a server shutdown - */ -void cmd_scdn(char *argbuf) +char CtdlCheckExpress(void) { - int new_state; - - if (CtdlAccessCheck(ac_aide)) return; - - new_state = extract_int(argbuf, 0); - if ((new_state == 0) || (new_state == 1)) { - ScheduledShutdown = new_state; + if (CC->FirstExpressMessage == NULL) { + return (' '); + } else { + return ('*'); } - cprintf("%d %d\n", CIT_OK, ScheduledShutdown); } -/* - * Set or unset asynchronous protocol mode - */ -void cmd_asyn(char *argbuf) +void citproto_begin_session() { - int new_state; - - new_state = extract_int(argbuf, 0); - if ((new_state == 0) || (new_state == 1)) { - CC->is_async = new_state; + 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, CtdlGetConfigStr("c_fqdn")); + CC->can_receive_im = 1; } - cprintf("%d %d\n", CIT_OK, CC->is_async); -} - - -/* - * Generate a "nonce" for APOP-style authentication. - * - * RFC 1725 et al specify a PID to be placed in front of the nonce. - * Quoth BTX: That would be stupid. - */ -void generate_nonce(struct CitContext *con) { - struct timeval tv; - - memset(con->cs_nonce, NONCE_SIZE, 0); - gettimeofday(&tv, NULL); - memset(con->cs_nonce, NONCE_SIZE, 0); - snprintf(con->cs_nonce, NONCE_SIZE, "<%d%ld@%s>", - rand(), (long)tv.tv_usec, config.c_fqdn); } - - -/* - * Back-end function for starting a session - */ -void begin_session(struct CitContext *con) +void citproto_begin_admin_session() { - int len; - struct sockaddr_in sin; - - /* - * Initialize some variables specific to our context. - */ - con->logged_in = 0; - con->internal_pgm = 0; - con->download_fp = NULL; - con->upload_fp = NULL; - con->FirstExpressMessage = NULL; - time(&con->lastcmd); - time(&con->lastidle); - strcpy(con->lastcmdname, " "); - strcpy(con->cs_clientname, "(unknown)"); - strcpy(con->curr_user, NLI); - strcpy(con->net_node, ""); - strcpy(con->fake_username, ""); - strcpy(con->fake_postname, ""); - strcpy(con->fake_hostname, ""); - strcpy(con->fake_roomname, ""); - generate_nonce(con); - safestrncpy(con->cs_host, config.c_fqdn, sizeof con->cs_host); - safestrncpy(con->cs_addr, "", sizeof con->cs_addr); - con->cs_host[sizeof con->cs_host - 1] = 0; - len = sizeof sin; - if (!CC->is_local_socket) { - if (!getpeername(con->client_socket, - (struct sockaddr *) &sin, &len)) /* should be socklen_t but doesn't work on Macintosh */ - locate_host(con->cs_host, sizeof con->cs_host, - con->cs_addr, sizeof con->cs_addr, - &sin.sin_addr); - } - else { - strcpy(con->cs_host, ""); - } - 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)) - con->nologin = 1; - - lprintf(CTDL_NOTICE, "Session started.\n"); - - /* 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); - } - else { - cprintf("%d %s Citadel server ready.\n", - CIT_OK, config.c_nodename); - } -} - - - - -/* - * 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) { - lprintf(CTDL_ERR, "Client disconnected: ending session.\n"); - CC->kill_me = 1; - return; - } - - /* Log the server command, but don't show passwords... */ - if ( (strncasecmp(cmdbuf, "PASS", 4)) - && (strncasecmp(cmdbuf, "SETP", 4)) ) { - lprintf(CTDL_INFO, "%s\n", cmdbuf); - } - else { - lprintf(CTDL_INFO, "\n"); - } - - buffer_output(); - - /* - * Let other clients see the last command we executed, and - * update the idle time, but not NOOP, QNOP, PEXP, or GEXP. - */ - if ( (strncasecmp(cmdbuf, "NOOP", 4)) - && (strncasecmp(cmdbuf, "QNOP", 4)) - && (strncasecmp(cmdbuf, "PEXP", 4)) - && (strncasecmp(cmdbuf, "GEXP", 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 (!strncasecmp(cmdbuf, "NOOP", 4)) { - cprintf("%d%cok\n", CIT_OK, CtdlCheckExpress() ); - } - - else if (!strncasecmp(cmdbuf, "QNOP", 4)) { - /* do nothing, this command returns no response */ - } - - else if (!strncasecmp(cmdbuf,"QUIT",4)) { - cprintf("%d Goodbye.\n", CIT_OK); - CC->kill_me = 1; - } - - else if (!strncasecmp(cmdbuf,"ASYN",4)) { - cmd_asyn(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LOUT",4)) { - if (CC->logged_in) logout(CC); - cprintf("%d logged out.\n", CIT_OK); - } - - else if (!strncasecmp(cmdbuf,"USER",4)) { - cmd_user(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"PASS",4)) { - cmd_pass(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"NEWU",4)) { - cmd_newu(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"CREU",4)) { - cmd_creu(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"SETP",4)) { - cmd_setp(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LRMS",4)) { - cmd_lrms(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LKRA",4)) { - cmd_lkra(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LKRN",4)) { - cmd_lkrn(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LKRO",4)) { - cmd_lkro(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LZRM",4)) { - cmd_lzrm(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LPRM",4)) { - cmd_lprm(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"GETU",4)) { - cmd_getu(); - } - - else if (!strncasecmp(cmdbuf,"SETU",4)) { - cmd_setu(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"GOTO",4)) { - cmd_goto(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MSGS",4)) { - cmd_msgs(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"WHOK",4)) { - cmd_whok(); - } - - else if (!strncasecmp(cmdbuf,"RDIR",4)) { - cmd_rdir(); - } - - else if (!strncasecmp(cmdbuf,"EUID",4)) { - cmd_euid(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MSG0",4)) { - cmd_msg0(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MSG2",4)) { - cmd_msg2(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MSG3",4)) { - cmd_msg3(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MSG4",4)) { - cmd_msg4(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MSGP",4)) { - cmd_msgp(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"OPNA",4)) { - cmd_opna(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"INFO",4)) { - cmd_info(); - } - - else if (!strncasecmp(cmdbuf,"SLRP",4)) { - cmd_slrp(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"INVT",4)) { - cmd_invt_kick(&cmdbuf[5],1); - } - - else if (!strncasecmp(cmdbuf,"KICK",4)) { - cmd_invt_kick(&cmdbuf[5],0); - } - - else if (!strncasecmp(cmdbuf,"GETR",4)) { - cmd_getr(); - } - - else if (!strncasecmp(cmdbuf,"SETR",4)) { - cmd_setr(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"GETA",4)) { - cmd_geta(); - } - - else if (!strncasecmp(cmdbuf,"SETA",4)) { - cmd_seta(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"ENT0",4)) { - cmd_ent0(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"RINF",4)) { - cmd_rinf(); - } - - else if (!strncasecmp(cmdbuf,"DELE",4)) { - cmd_dele(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"KILL",4)) { - cmd_kill(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"CRE8",4)) { - cmd_cre8(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MOVE",4)) { - cmd_move(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"FORG",4)) { - cmd_forg(); - } - - else if (!strncasecmp(cmdbuf,"MESG",4)) { - cmd_mesg(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"EMSG",4)) { - cmd_emsg(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"GNUR",4)) { - cmd_gnur(); - } - - else if (!strncasecmp(cmdbuf,"VALI",4)) { - cmd_vali(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"EINF",4)) { - cmd_einf(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LIST",4)) { - cmd_list(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"CHEK",4)) { - cmd_chek(); - } - - else if (!strncasecmp(cmdbuf,"DELF",4)) { - cmd_delf(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MOVF",4)) { - cmd_movf(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"NETF",4)) { - cmd_netf(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"OPEN",4)) { - cmd_open(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"CLOS",4)) { - cmd_clos(); - } - - else if (!strncasecmp(cmdbuf,"UOPN",4)) { - cmd_uopn(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"UCLS",4)) { - cmd_ucls(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"READ",4)) { - cmd_read(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"WRIT",4)) { - cmd_writ(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"QUSR",4)) { - cmd_qusr(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"ECHO",4)) { - cmd_echo(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"OIMG",4)) { - cmd_oimg(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"MORE",4)) { - cmd_more(); - } - - else if (!strncasecmp(cmdbuf,"NDOP",4)) { - cmd_ndop(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"NUOP",4)) { - cmd_nuop(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"LFLR",4)) { - cmd_lflr(); - } - - else if (!strncasecmp(cmdbuf,"CFLR",4)) { - cmd_cflr(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"KFLR",4)) { - cmd_kflr(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"EFLR",4)) { - cmd_eflr(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"IDEN",4)) { - cmd_iden(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"IPGM",4)) { - cmd_ipgm(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"TERM",4)) { - cmd_term(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf,"DOWN",4)) { - cmd_down(); - } - - else if (!strncasecmp(cmdbuf,"SCDN",4)) { - cmd_scdn(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "UIMG", 4)) { - cmd_uimg(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "TIME", 4)) { - cmd_time(); - } - - else if (!strncasecmp(cmdbuf, "AGUP", 4)) { - cmd_agup(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "ASUP", 4)) { - cmd_asup(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "GPEX", 4)) { - cmd_gpex(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "SPEX", 4)) { - cmd_spex(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "CONF", 4)) { - cmd_conf(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "SEEN", 4)) { - cmd_seen(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "GTSN", 4)) { - cmd_gtsn(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "VIEW", 4)) { - cmd_view(&cmdbuf[5]); - } - - else if (!strncasecmp(cmdbuf, "ISME", 4)) { - cmd_isme(&cmdbuf[5]); - } - - else 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); + CC->internal_pgm = 1; + cprintf("%d %s Citadel server ADMIN CONNECTION ready.\n", CIT_OK, CtdlGetConfigStr("c_fqdn")); } /* * This loop performs all asynchronous functions. */ -void do_async_loop(void) { +void do_async_loop(void) +{ PerformSessionHooks(EVT_ASYNC); }