+++ /dev/null
-/*
- * $Id$
- *
- * Main source module for the Citadel server
- *
- */
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
-#include <ctype.h>
-#include <string.h>
-#include <dirent.h>
-#include <errno.h>
-#include <limits.h>
-/* #include <dlfcn.h> */
-#include <netdb.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include "citadel.h"
-#include "server.h"
-#include "serv_extensions.h"
-#include "sysdep_decls.h"
-#include "citserver.h"
-#include "config.h"
-#include "database.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 "control.h"
-#include "tools.h"
-#include "euidindex.h"
-
-#ifndef HAVE_SNPRINTF
-#include "snprintf.h"
-#endif
-
-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];
-
-/*
- * Various things that need to be initialized at startup
- */
-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");
- 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);
- }
-
- lprintf(CTDL_INFO, "Opening databases\n");
- open_databases();
-
- if (do_defrag) {
- defrag_databases();
- }
-
- 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);
-
- /* 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 <K>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) {
- qrbuf.QRflags2 |= QR2_SYSTEM;
- qrbuf.QRep.expire_mode = EXPIRE_NUMMSGS;
- qrbuf.QRep.expire_value = 1;
- lputroom(&qrbuf);
- }
-
- lprintf(CTDL_INFO, "Seeding the pseudo-random number generator...\n");
- urandom = fopen("/dev/urandom", "r");
- if (urandom != NULL) {
- fread(&seed, sizeof seed, 1, urandom);
- fclose(urandom);
- }
- else {
- gettimeofday(&tv, NULL);
- seed = tv.tv_usec;
- }
- 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");
-}
-
-
-/*
- * 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;
-
- if (already_cleaning_up) while(1) sleep(1);
- already_cleaning_up = 1;
-
- /* Run any cleanup routines registered by loadable modules */
- for (fcn = CleanupHookTable; fcn != NULL; fcn = fcn->next) {
- (*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);
-
- /* Shut down the checkpoint thread */
- lprintf(CTDL_INFO, "Waiting for the checkpoint thread to shut down\n");
- pthread_join(checkpoint_thread_tid, NULL);
-
- /* Close databases */
- lprintf(CTDL_INFO, "Closing databases\n");
- close_databases();
-
- /* Do system-dependent stuff */
- sysdep_master_cleanup();
-
-#ifdef DEBUG_MEMORY_LEAKS
- dump_heap();
-#endif
-
- /* Now go away. */
- lprintf(CTDL_NOTICE, "citserver: Exiting with status %d\n", exitcode);
- fflush(stdout); fflush(stderr);
-
- unlink(pid_file_name);
- exit(exitcode);
-}
-
-
-
-/*
- * Terminate a session.
- */
-void RemoveContext (struct CitContext *con)
-{
- if (con==NULL) {
- lprintf(CTDL_ERR,
- "WARNING: RemoveContext() called with NULL!\n");
- return;
- }
- 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");
-}
-
-
-/*
- * 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];
-
-#ifndef HAVE_ETC
-#define PUBLIC_CLIENTS "./public_clients"
-#else
-#define PUBLIC_CLIENTS ETC_DIR"/public_clients"
-#endif
-
- /*
- * 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, &statbuf) != 0) {
- /* No public_clients file exists, so bail out */
- lprintf(CTDL_WARNING, "Warning: '%s' does not exist\n", PUBLIC_CLIENTS);
- return(0);
- }
-
- if (statbuf.st_mtime > pc_timestamp) {
- begin_critical_section(S_PUBLIC_CLIENTS);
- lprintf(CTDL_INFO, "Loading %s\n", PUBLIC_CLIENTS);
-
- 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(
-#ifndef HAVE_ETC
- "."
-#else
- ETC_DIR
-#endif
- "/public_clients", "r");
- if (fp != NULL) while (fgets(buf, sizeof buf, fp)!=NULL) {
- for (i=0; i<strlen(buf); ++i) {
- if (buf[i] == '#') buf[i] = 0;
- }
- while (isspace((buf[strlen(buf)-1]))) {
- buf[strlen(buf)-1] = 0;
- }
- if (hostname_to_dotted_quad(addrbuf, buf) == 0) {
- if ((strlen(public_clients) +
- strlen(addrbuf) + 2)
- < sizeof(public_clients)) {
- strcat(public_clients, addrbuf);
- }
- }
- }
- fclose(fp);
- pc_timestamp = time(NULL);
- end_critical_section(S_PUBLIC_CLIENTS);
- }
-
- lprintf(CTDL_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)) {
- 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);
-
-#ifdef HAVE_DATA_DIR
- dirs[0] = strdup(DATA_DIR "/messages");
-#else
- dirs[0] = strdup("messages");
-#endif
-
-#ifdef HAVE_DATA_DIR
- dirs[1] = strdup(DATA_DIR "/help");
-#else
- dirs[1] = strdup("help");
-#endif
-
- 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; a<strlen(buf); ++a) { /* security measure */
- if (buf[a] == '/') buf[a] = '.';
- }
-
-#ifdef HAVE_DATA_DIR
- dirs[0] = strdup(DATA_DIR "/messages");
-#else
- dirs[0] = strdup("messages");
-#endif
-
-#ifdef HAVE_DATA_DIR
- dirs[1] = strdup(DATA_DIR "/help");
-#else
- dirs[1] = strdup("help");
-#endif
-
- mesg_locate(targ, sizeof targ, buf, 2, (const char**)dirs);
- free(dirs[0]);
- free(dirs[1]);
-
- if (strlen(targ)==0) {
- snprintf(targ, sizeof targ,
-#ifndef HAVE_DATA_DIR
- "."
-#else
- DATA_DIR
-#endif
- "/help/%s", 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), 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,
- struct CitContext *viewed,
- struct 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, "<private room>");
- }
- }
-
- if (viewed->cs_flags & CS_CHAT) {
- while (strlen(real_room) < 14)
- strcat(real_room, " ");
-
- strcpy(&real_room[14], "<chat>");
- }
-
-}
-
-/*
- * 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, "<internal program>");
- 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)
-{
- int new_state;
-
- if (CtdlAccessCheck(ac_aide)) return;
-
- new_state = extract_int(argbuf, 0);
- if ((new_state == 0) || (new_state == 1)) {
- ScheduledShutdown = new_state;
- }
- cprintf("%d %d\n", CIT_OK, ScheduledShutdown);
-}
-
-
-/*
- * Set or unset asynchronous protocol mode
- */
-void cmd_asyn(char *argbuf)
-{
- int new_state;
-
- new_state = extract_int(argbuf, 0);
- if ((new_state == 0) || (new_state == 1)) {
- CC->is_async = new_state;
- }
- 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)
-{
- 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, "<password command sent>\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);
-}
-
-
-/*
- * This loop performs all asynchronous functions.
- */
-void do_async_loop(void) {
- PerformSessionHooks(EVT_ASYNC);
-}