* GNU General Public License for more details.
*/
-#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>
-
+#include "sysdep.h"
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#if HAVE_BACKTRACE
#include <execinfo.h>
#endif
-
-#include <ctype.h>
-#include <string.h>
-#include <dirent.h>
-#include <errno.h>
-#include <limits.h>
-#include <netdb.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
#include <libcitadel.h>
-#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"
-#include "ctdl_module.h"
+#include "config.h"
char *unique_session_numbers;
int ScheduledShutdown = 0;
* (for example, to show the location of the user rather than the location
* of the client).
*/
-int is_public_client(void)
+int CtdlIsPublicClient(void)
{
char buf[1024];
char addrbuf[1024];
-/*
- * help_subst() - support routine for help file viewer
- */
-void help_subst(char *strbuf, char *source, char *dest)
-{
- char workbuf[SIZ];
- int p;
-
- while (p = pattern2(strbuf, source), (p >= 0)) {
- strcpy(workbuf, &strbuf[p + strlen(source)]);
- strcpy(&strbuf[p], dest);
- strcat(strbuf, workbuf);
- }
-}
-
-void do_help_subst(char *buffer)
-{
- char buf2[16];
-
- help_subst(buffer, "^nodename", config.c_nodename);
- help_subst(buffer, "^humannode", config.c_humannode);
- help_subst(buffer, "^fqdn", config.c_fqdn);
- help_subst(buffer, "^username", CC->user.fullname);
- snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
- help_subst(buffer, "^usernum", buf2);
- help_subst(buffer, "^sysadm", config.c_sysadm);
- help_subst(buffer, "^variantname", CITADEL);
- snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
- help_subst(buffer, "^maxsessions", buf2);
- help_subst(buffer, "^bbsdir", ctdl_message_dir);
-}
-
-
-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], "<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_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 Admin 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 Admin or Room Admin access.\n",
- ERROR + HIGHER_ACCESS_REQUIRED);
- return(-1);
- }
-
- /* shhh ... succeed quietly */
- return(0);
-}
-
-
-
-
-
-
-/*
- * 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);
-}
-
-
-
-/*
- * Back-end function for starting a session
- */
-void begin_session(CitContext *con)
-{
- /*
- * 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() {
PerformSessionHooks(EVT_ASYNC);
}
-
-/*****************************************************************************/
-/* MODULE INITIALIZATION STUFF */
-/*****************************************************************************/
-
-CTDL_MODULE_INIT(citserver)
-{
- if (!threading) {
-
- CtdlRegisterProtoHook(cmd_mesg, "MESG", "fetch system banners");
- CtdlRegisterProtoHook(cmd_emsg, "EMSG", "submit system banners");
-;
- CtdlRegisterProtoHook(cmd_down, "DOWN", "perform a server shutdown");
- CtdlRegisterProtoHook(cmd_halt, "HALT", "halt the server without exiting the server process");
- CtdlRegisterProtoHook(cmd_scdn, "SCDN", "schedule or cancel a server shutdown");
- }
- /* return our id for the Log */
- return "citserver";
-}
projects / citadel.git / blobdiff