#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 <string.h>
#include <errno.h>
#include <limits.h>
-#include <syslog.h>
/* #include <dlfcn.h> */
#include <netdb.h>
#include <sys/types.h>
#include "database.h"
#include "housekeeping.h"
#include "user_ops.h"
-#include "logging.h"
#include "msgbase.h"
#include "support.h"
#include "locate_host.h"
#endif
struct CitContext *ContextList = NULL;
+struct CitContext* next_session = NULL;
char *unique_session_numbers;
int ScheduledShutdown = 0;
int do_defrag = 0;
*/
void master_startup(void) {
struct timeval tv;
- struct quickroom qrbuf;
+ unsigned int seed;
+ FILE *urandom;
+ struct ctdlroom qrbuf;
- lprintf(9, "master_startup() started\n");
+ lprintf(CTDL_DEBUG, "master_startup() started\n");
time(&server_startup_time);
- lprintf(7, "Opening databases\n");
+ lprintf(CTDL_INFO, "Opening databases\n");
open_databases();
if (do_defrag) {
check_ref_counts();
- lprintf(7, "Creating base rooms (if necessary)\n");
+ lprintf(CTDL_INFO, "Creating base rooms (if necessary)\n");
create_room(BASEROOM, 0, "", 0, 1, 0);
create_room(AIDEROOM, 3, "", 0, 1, 0);
create_room(SYSCONFIGROOM, 3, "", 0, 1, 0);
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(7, "Seeding the pseudo-random number generator...\n");
- gettimeofday(&tv, NULL);
- srand(tv.tv_usec);
- lprintf(9, "master_startup() finished\n");
-}
+ lprintf(CTDL_INFO, "Initializing ipgm secret\n");
+ get_config();
+ config.c_ipgm_secret = rand();
+ put_config();
+ lprintf(CTDL_DEBUG, "master_startup() finished\n");
+}
/*
}
/* Close databases */
- lprintf(7, "Closing databases\n");
+ 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(3, "citserver: exiting.\n");
+ lprintf(CTDL_NOTICE, "citserver: exiting.\n");
fflush(stdout); fflush(stderr);
exit(0);
}
begin_critical_section(S_SESSION_TABLE);
while (con->FirstSessData != NULL) {
- lprintf(9, "Deallocating user data symbol %ld\n",
+ lprintf(CTDL_DEBUG, "Deallocating user data symbol %ld\n",
con->FirstSessData->sym_id);
if (con->FirstSessData->sym_data != NULL)
- phree(con->FirstSessData->sym_data);
+ free(con->FirstSessData->sym_data);
ptr = con->FirstSessData->next;
- phree(con->FirstSessData);
+ free(con->FirstSessData);
con->FirstSessData = ptr;
}
end_critical_section(S_SESSION_TABLE);
struct CitContext *ptr = NULL;
struct CitContext *ToFree = NULL;
- lprintf(9, "RemoveContext() called\n");
if (con==NULL) {
- lprintf(5, "WARNING: RemoveContext() called with NULL!\n");
+ lprintf(CTDL_ERR, "WARNING: RemoveContext() called with NULL!\n");
return;
}
+ lprintf(CTDL_DEBUG, "RemoveContext() called\n");
/* Remove the context from the global context list. This needs
* to get done FIRST to avoid concurrency problems. It is *vitally*
* important to keep num_sessions accurate!!
*/
- lprintf(7, "Removing context for session %d\n", con->cs_pid);
+ lprintf(CTDL_DEBUG, "Removing context for session %d\n", con->cs_pid);
begin_critical_section(S_SESSION_TABLE);
if (ContextList == con) {
ToFree = ContextList;
else {
for (ptr = ContextList; ptr != NULL; ptr = ptr->next) {
if (ptr->next == con) {
+ /* See fair scheduling in sysdep.c */
+ if (next_session == ptr->next)
+ next_session = ptr->next->next;
ToFree = ptr->next;
ptr->next = ptr->next->next;
--num_sessions;
end_critical_section(S_SESSION_TABLE);
if (ToFree == NULL) {
- lprintf(9, "RemoveContext() found nothing to remove\n");
+ lprintf(CTDL_DEBUG, "RemoveContext() found nothing to remove\n");
return;
}
become_session(NULL);
/* Now handle all of the administrivia. */
- lprintf(7, "Calling logout(%d)\n", con->cs_pid);
+ lprintf(CTDL_DEBUG, "Calling logout(%d)\n", con->cs_pid);
logout(con);
- rec_log(CL_TERMINATE, con->curr_user);
unlink(con->temp);
- lprintf(3, "[%3d] Session ended.\n", con->cs_pid);
-
- syslog(LOG_NOTICE,"session %d: ended", con->cs_pid);
+ lprintf(CTDL_NOTICE, "Session %d: ended.\n", con->cs_pid);
/* Deallocate any user-data attached to this session */
deallocate_user_data(con);
/* If the client is still connected, blow 'em away. */
- lprintf(7, "Closing socket %d\n", con->client_socket);
+ lprintf(CTDL_DEBUG, "Closing socket %d\n", con->client_socket);
close(con->client_socket);
/* This is where we used to check for scheduled shutdowns. */
/* Free up the memory used by this context */
- phree(con);
+ free(con);
- lprintf(7, "Done with RemoveContext()\n");
+ lprintf(CTDL_DEBUG, "Done with RemoveContext()\n");
}
-/*
- * Get a dynamic symbol number for per-session user data.
- * This API call should be made only ONCE per symbol per citserver run.
- */
-int CtdlGetDynamicSymbol()
-{
- static unsigned int next_symbol = SYM_MAX;
- return ++next_symbol;
-}
-
/*
if (ptr->sym_id == requested_sym)
return(ptr->sym_data);
- lprintf(2, "ERROR! CtdlGetUserData(%ld) symbol not allocated\n",
+ lprintf(CTDL_ERR, "ERROR! CtdlGetUserData(%ld) symbol not allocated\n",
requested_sym);
return NULL;
}
{
struct CtdlSessData *ptr;
- lprintf(9, "CtdlAllocUserData(%ld) called\n", requested_sym);
+ lprintf(CTDL_DEBUG, "CtdlAllocUserData(%ld) called\n", requested_sym);
/* Fail silently if the symbol is already registered. */
for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next) {
}
/* Grab us some memory! Dem's good eatin' !! */
- ptr = mallok(sizeof(struct CtdlSessData));
+ ptr = malloc(sizeof(struct CtdlSessData));
ptr->sym_id = requested_sym;
- ptr->sym_data = mallok(num_bytes);
+ ptr->sym_data = malloc(num_bytes);
memset(ptr->sym_data, 0, num_bytes);
begin_critical_section(S_SESSION_TABLE);
CC->FirstSessData = ptr;
end_critical_section(S_SESSION_TABLE);
- lprintf(9, "CtdlAllocUserData(%ld) finished\n", requested_sym);
+ lprintf(CTDL_DEBUG, "CtdlAllocUserData(%ld) finished\n", requested_sym);
}
for (ptr = CC->FirstSessData; ptr != NULL; ptr = ptr->next) {
if (ptr->sym_id == requested_sym) {
- ptr->sym_data = reallok(ptr->sym_data, num_bytes);
+ ptr->sym_data = realloc(ptr->sym_data, num_bytes);
return;
}
}
- lprintf(2, "CtdlReallocUserData() ERROR: symbol %ld not found!\n",
+ lprintf(CTDL_ERR, "CtdlReallocUserData() ERROR: symbol %ld not found!\n",
requested_sym);
}
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 express messages waiting,
+ * returns an asterisk if there are any instant messages waiting,
* space otherwise.
*/
char CtdlCheckExpress(void) {
#endif
}
-/*
- * Check whether two hostnames match.
- * "Realname" should be an actual name of a client that is trying to connect;
- * "testname" should be the value we are comparing it with. The idea is that we
- * want to compare with both the abbreviated and fully-qualified versions of
- * "testname;" some people define "localhost" as "localhost.foo.com," etc.
- */
-static int hostnames_match(const char *realname, const char *testname) {
- struct hostent *he;
- int retval = 0;
-
- if (!strcasecmp(realname, testname)) {
- return(1);
- }
-
-#ifdef HAVE_NONREENTRANT_NETDB
- begin_critical_section(S_NETDB);
-#endif
-
- if ((he = gethostbyname(testname)) != NULL) {
- if (!strcasecmp(realname, he->h_name)) {
- retval = 1;
- }
- }
-
-#ifdef HAVE_NONREENTRANT_NETDB
- end_critical_section(S_NETDB);
-#endif
-
- return retval;
-}
/*
- * check a hostname against the public_clients file
+ * 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(char *where)
+int is_public_client(void)
{
char buf[SIZ];
+ char addrbuf[SIZ];
FILE *fp;
+ int i;
+ struct stat statbuf;
+ static time_t pc_timestamp = 0;
+ static char public_clients[SIZ];
+
+#define PUBLIC_CLIENTS "./public_clients"
- lprintf(9, "Checking whether %s is a public client\n", where);
+ /*
+ * 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 (hostnames_match(where, "localhost")) return(1);
- if (hostnames_match(where, config.c_fqdn)) return(1);
+ if (statbuf.st_mtime > pc_timestamp) {
+ begin_critical_section(S_PUBLIC_CLIENTS);
+ lprintf(CTDL_INFO, "Loading %s\n", PUBLIC_CLIENTS);
- fp = fopen("public_clients","r");
- if (fp == NULL) return(0);
+ strcpy(public_clients, "127.0.0.1");
+ if (hostname_to_dotted_quad(addrbuf, config.c_fqdn) == 0) {
+ strcat(public_clients, "|");
+ strcat(public_clients, addrbuf);
+ }
- while (fgets(buf, sizeof buf, fp)!=NULL) {
- while (isspace((buf[strlen(buf)-1])))
- buf[strlen(buf)-1] = 0;
- if (hostnames_match(where,buf)) {
- fclose(fp);
+ fp = fopen("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(addrbuf, public_clients, i);
+ if (!strcasecmp(CC->cs_addr, addrbuf)) {
+ lprintf(CTDL_DEBUG, "... yes it is.\n");
return(1);
}
}
- fclose(fp);
+ /* No hits. This is not a public client. */
+ lprintf(CTDL_DEBUG, "... no it isn't.\n");
return(0);
}
int do_lookup = 0;
if (num_parms(argbuf)<4) {
- cprintf("%d usage error\n",ERROR);
+ cprintf("%d usage error\n", ERROR + ILLEGAL_VALUE);
return;
}
if (strlen(from_host) > 0) {
if (CC->is_local_socket) do_lookup = 1;
- else if (is_public_client(CC->cs_host)) do_lookup = 1;
+ else if (is_public_client()) do_lookup = 1;
}
if (do_lookup) {
- lprintf(9, "Looking up hostname '%s'\n", from_host);
+ 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, &addr);
+ locate_host(CC->cs_host, sizeof CC->cs_host,
+ NULL, 0,
+ &addr);
}
else {
safestrncpy(CC->cs_host, from_host, sizeof CC->cs_host);
}
}
- lprintf(7, "client %d/%d/%01d.%02d (%s)\n",
- dev_code,
- cli_code,
- (rev_level / 100),
- (rev_level % 100),
- desc);
-
- syslog(LOG_NOTICE,"session %d: client %d/%d/%01d.%02d (%s) from %s\n",
- CC->cs_pid,
+ lprintf(CTDL_NOTICE, "Client %d/%d/%01d.%02d (%s) from %s\n",
dev_code,
cli_code,
(rev_level / 100),
extract(buf,mname,0);
- dirs[0]=mallok(64);
- dirs[1]=mallok(64);
+ dirs[0]=malloc(64);
+ dirs[1]=malloc(64);
strcpy(dirs[0],"messages");
strcpy(dirs[1],"help");
snprintf(buf2, sizeof buf2, "%s.%d.%d", buf, CC->cs_clientdev, CC->cs_clienttyp);
mesg_locate(targ,sizeof targ,buf,2,(const char **)dirs);
}
}
- phree(dirs[0]);
- phree(dirs[1]);
+ free(dirs[0]);
+ free(dirs[1]);
if (strlen(targ)==0) {
- cprintf("%d '%s' not found.\n",ERROR,mname);
+ 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,targ,strerror(errno));
+ ERROR + INTERNAL_ERROR, targ, strerror(errno));
return;
}
cprintf("%d %s\n",LISTING_FOLLOWS,buf);
if (buf[a] == '/') buf[a] = '.';
}
- dirs[0]=mallok(64);
- dirs[1]=mallok(64);
+ dirs[0]=malloc(64);
+ dirs[1]=malloc(64);
strcpy(dirs[0],"messages");
strcpy(dirs[1],"help");
mesg_locate(targ,sizeof targ,buf,2,(const char**)dirs);
- phree(dirs[0]);
- phree(dirs[1]);
+ free(dirs[0]);
+ free(dirs[1]);
if (strlen(targ)==0) {
snprintf(targ, sizeof targ, "./help/%s", buf);
mfp = fopen(targ,"w");
if (mfp==NULL) {
cprintf("%d Cannot open '%s': %s\n",
- ERROR,targ,strerror(errno));
+ ERROR + INTERNAL_ERROR, targ, strerror(errno));
return;
}
cprintf("%d %s\n", SEND_LISTING, targ);
struct CitContext *viewed,
struct CitContext *viewer) {
- strcpy(real_room, viewed->quickroom.QRname);
- if (viewed->quickroom.QRflags & QR_MAILBOX) {
+ strcpy(real_room, viewed->room.QRname);
+ if (viewed->room.QRflags & QR_MAILBOX) {
strcpy(real_room, &real_room[11]);
}
- if (viewed->quickroom.QRflags & QR_PRIVATE) {
- if ( (CtdlRoomAccess(&viewed->quickroom, &viewer->usersupp)
+ if (viewed->room.QRflags & QR_PRIVATE) {
+ if ( (CtdlRoomAccess(&viewed->room, &viewer->user)
& UA_KNOWN) == 0) {
strcpy(real_room, "<private room>");
}
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);
+ ERROR + HIGHER_ACCESS_REQUIRED);
return(-1);
}
- if (CC->usersupp.axlevel >= 6) return(0);
+ if (CC->user.axlevel >= 6) return(0);
if (required_level >= ac_aide) {
cprintf("%d This command requires Aide access.\n",
- ERROR+HIGHER_ACCESS_REQUIRED);
+ ERROR + HIGHER_ACCESS_REQUIRED);
return(-1);
}
if (CC->logged_in) return(0);
if (required_level >= ac_logged_in) {
- cprintf("%d Not logged in.\n", ERROR+NOT_LOGGED_IN);
+ cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
return(-1);
}
session_num = extract_int(cmdbuf, 0);
if (session_num == CC->cs_pid) {
- cprintf("%d You can't kill your own session.\n", ERROR);
+ cprintf("%d You can't kill your own session.\n", ERROR + ILLEGAL_VALUE);
return;
}
- lprintf(9, "Locating session to kill\n");
+ 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->usersupp.usernum == CC->usersupp.usernum)
- || (CC->usersupp.axlevel >= 6)) {
+ if ((ccptr->user.usernum == CC->user.usernum)
+ || (CC->user.axlevel >= 6)) {
allowed = 1;
ccptr->kill_me = 1;
}
}
}
else {
- cprintf("%d No such session.\n", ERROR);
+ cprintf("%d No such session.\n", ERROR + ILLEGAL_VALUE);
}
}
int secret;
secret = extract_int(argbuf, 0);
- if (secret == config.c_ipgm_secret) {
+
+ /* 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);
+ cprintf("%d Authenticated as an internal program.\n", CIT_OK);
}
else {
- cprintf("%d Authentication failed.\n",ERROR);
- lprintf(3, "Warning: ipgm authentication failed.\n");
+ 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. */
+ get_config();
+ config.c_ipgm_secret = rand();
+ put_config();
}
generate_nonce(con);
snprintf(con->temp, sizeof con->temp, tmpnam(NULL));
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))
- locate_host(con->cs_host, sizeof con->cs_host, &sin.sin_addr);
+ locate_host(con->cs_host, sizeof con->cs_host,
+ con->cs_addr, sizeof con->cs_addr,
+ &sin.sin_addr);
}
else {
strcpy(con->cs_host, "");
if ((config.c_maxsessions > 0)&&(num_sessions > config.c_maxsessions))
con->nologin = 1;
- lprintf(3, "Session started.\n");
+ lprintf(CTDL_NOTICE, "Session started.\n");
/* Run any session startup routines registered by loadable modules */
PerformSessionHooks(EVT_START);
-
- rec_log(CL_CONNECT, "");
}
if (CC->nologin==1) {
cprintf("%d %s: Too many users are already online "
"(maximum is %d)\n",
- ERROR+MAX_SESSIONS_EXCEEDED,
+ ERROR + MAX_SESSIONS_EXCEEDED,
config.c_nodename, config.c_maxsessions);
}
else {
- cprintf("%d %s Citadel/UX server ready.\n",
+ cprintf("%d %s Citadel server ready.\n",
CIT_OK, config.c_nodename);
}
}
time(&CC->lastcmd);
memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
if (client_gets(cmdbuf) < 1) {
- lprintf(3, "Client socket is broken. Ending session.\n");
+ lprintf(CTDL_ERR, "Client socket is broken; ending session\n");
CC->kill_me = 1;
return;
}
- lprintf(5, "Citadel: %s\n", cmdbuf);
+ lprintf(CTDL_INFO, "Citadel: %s\n", cmdbuf);
/*
* Let other clients see the last command we executed, and
}
if (!strncasecmp(cmdbuf,"NOOP",4)) {
- cprintf("%d%cok\n",CIT_OK,CtdlCheckExpress());
+ cprintf("%d%cok\n", CIT_OK, CtdlCheckExpress() );
}
else if (!strncasecmp(cmdbuf,"QNOP",4)) {
}
else if (!strncasecmp(cmdbuf,"QUIT",4)) {
- cprintf("%d Goodbye.\n",CIT_OK);
+ cprintf("%d Goodbye.\n", CIT_OK);
CC->kill_me = 1;
}
else if (!strncasecmp(cmdbuf,"LOUT",4)) {
if (CC->logged_in) logout(CC);
- cprintf("%d logged out.\n",CIT_OK);
+ cprintf("%d logged out.\n", CIT_OK);
}
else if (!strncasecmp(cmdbuf,"USER",4)) {
cmd_isme(&cmdbuf[5]);
}
-#ifdef DEBUG_MEMORY_LEAKS
- else if (!strncasecmp(cmdbuf, "LEAK", 4)) {
- dump_tracked();
- }
-#endif
-
else if (!DLoader_Exec_Cmd(cmdbuf)) {
- cprintf("%d Unrecognized or unsupported command.\n", ERROR);
+ cprintf("%d Unrecognized or unsupported command.\n",
+ ERROR + CMD_NOT_SUPPORTED);
}
- /* Run any after-each-command outines registered by modules */
+ /* 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);
+}
projects / citadel.git / blobdiff