/*
Unix SMB/CIFS implementation.
session handling for utmp and PAM
- Copyright (C) tridge@samba.org 2001
- Copyright (C) abartlet@pcug.org.au 2001
+
+ Copyright (C) tridge@samba.org 2001
+ Copyright (C) abartlet@samba.org 2001
+ Copyright (C) Gerald (Jerry) Carter 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "includes.h"
-extern fstring remote_machine;
-
static TDB_CONTEXT *tdb;
-/* called when a session is created */
+
+/********************************************************************
+********************************************************************/
+
+BOOL session_init(void)
+{
+ if (tdb)
+ return True;
+
+ tdb = tdb_open_log(lock_path("sessionid.tdb"), 0, TDB_CLEAR_IF_FIRST|TDB_DEFAULT,
+ O_RDWR | O_CREAT, 0644);
+ if (!tdb) {
+ DEBUG(1,("session_init: failed to open sessionid tdb\n"));
+ return False;
+ }
+
+ return True;
+}
+
+/********************************************************************
+ called when a session is created
+********************************************************************/
+
BOOL session_claim(user_struct *vuser)
{
- int i;
+ int i = 0;
TDB_DATA data;
+ struct sockaddr sa;
+ struct in_addr *client_ip;
struct sessionid sessionid;
uint32 pid = (uint32)sys_getpid();
TDB_DATA key;
fstring keystr;
char * hostname;
+ int tdb_store_flag; /* If using utmp, we do an inital 'lock hold' store,
+ but we don't need this if we are just using the
+ (unique) pid/vuid combination */
- vuser->session_id = 0;
+ vuser->session_keystr = NULL;
/* don't register sessions for the guest user - its just too
expensive to go through pam session code for browsing etc */
return True;
}
- if (!tdb) {
- tdb = tdb_open_log(lock_path("sessionid.tdb"), 0, TDB_CLEAR_IF_FIRST|TDB_DEFAULT,
- O_RDWR | O_CREAT, 0644);
- if (!tdb) {
- DEBUG(1,("session_claim: failed to open sessionid tdb\n"));
- return False;
- }
- }
+ if (!session_init())
+ return False;
ZERO_STRUCT(sessionid);
data.dptr = NULL;
data.dsize = 0;
- for (i=1;i<MAX_SESSION_ID;i++) {
- slprintf(keystr, sizeof(keystr)-1, "ID/%d", i);
+ if (lp_utmp()) {
+ for (i=1;i<MAX_SESSION_ID;i++) {
+ slprintf(keystr, sizeof(keystr)-1, "ID/%d", i);
+ key.dptr = keystr;
+ key.dsize = strlen(keystr)+1;
+
+ if (tdb_store(tdb, key, data, TDB_INSERT) == 0) break;
+ }
+
+ if (i == MAX_SESSION_ID) {
+ DEBUG(1,("session_claim: out of session IDs (max is %d)\n",
+ MAX_SESSION_ID));
+ return False;
+ }
+ slprintf(sessionid.id_str, sizeof(sessionid.id_str)-1, SESSION_UTMP_TEMPLATE, i);
+ tdb_store_flag = TDB_MODIFY;
+ } else
+ {
+ slprintf(keystr, sizeof(keystr)-1, "ID/%lu/%u",
+ (long unsigned int)sys_getpid(),
+ vuser->vuid);
+ slprintf(sessionid.id_str, sizeof(sessionid.id_str)-1,
+ SESSION_TEMPLATE, (long unsigned int)sys_getpid(),
+ vuser->vuid);
+
key.dptr = keystr;
key.dsize = strlen(keystr)+1;
-
- if (tdb_store(tdb, key, data, TDB_INSERT) == 0) break;
- }
-
- if (i == MAX_SESSION_ID) {
- DEBUG(1,("session_claim: out of session IDs (max is %d)\n",
- MAX_SESSION_ID));
- return False;
+
+ tdb_store_flag = TDB_REPLACE;
}
/* If 'hostname lookup' == yes, then do the DNS lookup. This is
- needed becouse utmp and PAM both expect DNS names */
+ needed because utmp and PAM both expect DNS names
+
+ client_name() handles this case internally.
+ */
- if (lp_hostname_lookups()) {
- hostname = client_name();
- } else {
+ hostname = client_name();
+ if (strcmp(hostname, "UNKNOWN") == 0) {
hostname = client_addr();
}
fstrcpy(sessionid.username, vuser->user.unix_name);
fstrcpy(sessionid.hostname, hostname);
- slprintf(sessionid.id_str, sizeof(sessionid.id_str)-1, SESSION_TEMPLATE, i);
- sessionid.id_num = i;
+ sessionid.id_num = i; /* Only valid for utmp sessions */
sessionid.pid = pid;
sessionid.uid = vuser->uid;
sessionid.gid = vuser->gid;
- fstrcpy(sessionid.remote_machine, remote_machine);
+ fstrcpy(sessionid.remote_machine, get_remote_machine_name());
fstrcpy(sessionid.ip_addr, client_addr());
+ sessionid.connect_start = time(NULL);
+
+ client_ip = client_inaddr(&sa);
if (!smb_pam_claim_session(sessionid.username, sessionid.id_str, sessionid.hostname)) {
DEBUG(1,("pam_session rejected the session for %s [%s]\n",
sessionid.username, sessionid.id_str));
- tdb_delete(tdb, key);
+ if (tdb_store_flag == TDB_MODIFY) {
+ tdb_delete(tdb, key);
+ }
return False;
}
data.dptr = (char *)&sessionid;
data.dsize = sizeof(sessionid);
- if (tdb_store(tdb, key, data, TDB_MODIFY) != 0) {
+ if (tdb_store(tdb, key, data, tdb_store_flag) != 0) {
DEBUG(1,("session_claim: unable to create session id record\n"));
return False;
}
-#if WITH_UTMP
if (lp_utmp()) {
sys_utmp_claim(sessionid.username, sessionid.hostname,
+ client_ip,
sessionid.id_str, sessionid.id_num);
}
-#endif
- vuser->session_id = i;
+ vuser->session_keystr = SMB_STRDUP(keystr);
+ if (!vuser->session_keystr) {
+ DEBUG(0, ("session_claim: strdup() failed for session_keystr\n"));
+ return False;
+ }
return True;
}
-/* called when a session is destroyed */
+/********************************************************************
+ called when a session is destroyed
+********************************************************************/
+
void session_yield(user_struct *vuser)
{
TDB_DATA dbuf;
struct sessionid sessionid;
- TDB_DATA key;
- fstring keystr;
+ struct in_addr *client_ip;
+ TDB_DATA key;
if (!tdb) return;
- if (vuser->session_id == 0) {
+ if (!vuser->session_keystr) {
return;
}
- slprintf(keystr, sizeof(keystr)-1, "ID/%d", vuser->session_id);
-
- key.dptr = keystr;
- key.dsize = strlen(keystr)+1;
+ key.dptr = vuser->session_keystr;
+ key.dsize = strlen(vuser->session_keystr)+1;
dbuf = tdb_fetch(tdb, key);
memcpy(&sessionid, dbuf.dptr, sizeof(sessionid));
+ client_ip = interpret_addr2(sessionid.ip_addr);
+
SAFE_FREE(dbuf.dptr);
-#if WITH_UTMP
if (lp_utmp()) {
sys_utmp_yield(sessionid.username, sessionid.hostname,
+ client_ip,
sessionid.id_str, sessionid.id_num);
}
-#endif
smb_pam_close_session(sessionid.username, sessionid.id_str, sessionid.hostname);
tdb_delete(tdb, key);
}
-BOOL session_traverse(int (*fn)(TDB_CONTEXT *, TDB_DATA, TDB_DATA, void *), void *state)
+/********************************************************************
+********************************************************************/
+
+BOOL session_traverse(int (*fn)(TDB_CONTEXT *, TDB_DATA, TDB_DATA, void *),
+ void *state)
{
- if (!tdb) {
- DEBUG(3, ("No tdb opened\n"));
- return False;
- }
+ if (!session_init()) {
+ DEBUG(3, ("No tdb opened\n"));
+ return False;
+ }
- tdb_traverse(tdb, fn, state);
- return True;
+ tdb_traverse(tdb, fn, state);
+ return True;
}
+/********************************************************************
+********************************************************************/
+
+struct session_list {
+ int count;
+ struct sessionid *sessions;
+};
+static int gather_sessioninfo(TDB_CONTEXT *stdb, TDB_DATA kbuf, TDB_DATA dbuf, void *state)
+{
+ uint32 i;
+ struct session_list *sesslist = (struct session_list *) state;
+ const struct sessionid *current = (const struct sessionid *) dbuf.dptr;
+
+ i = sesslist->count;
+
+ sesslist->sessions = SMB_REALLOC_ARRAY(sesslist->sessions, struct sessionid, i+1);
+ if (!sesslist->sessions) {
+ sesslist->count = 0;
+ return -1;
+ }
+ memcpy(&sesslist->sessions[i], current, sizeof(struct sessionid));
+ sesslist->count++;
+
+ DEBUG(7,("gather_sessioninfo session from %s@%s\n",
+ current->username, current->remote_machine));
+
+ return 0;
+}
+
+/********************************************************************
+********************************************************************/
+
+int list_sessions(struct sessionid **session_list)
+{
+ struct session_list sesslist;
+
+ sesslist.count = 0;
+ sesslist.sessions = NULL;
+
+ if (!session_traverse(gather_sessioninfo, (void *) &sesslist)) {
+ DEBUG(3, ("Session traverse failed\n"));
+ SAFE_FREE(sesslist.sessions);
+ *session_list = NULL;
+ return 0;
+ }
+
+ *session_list = sesslist.sessions;
+ return sesslist.count;
+}
git.samba.org / samba.git / blobdiff