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-rw-r--r--source/passdb/smbpassfile.c295
1 files changed, 295 insertions, 0 deletions
diff --git a/source/passdb/smbpassfile.c b/source/passdb/smbpassfile.c
new file mode 100644
index 00000000000..d931478839d
--- /dev/null
+++ b/source/passdb/smbpassfile.c
@@ -0,0 +1,295 @@
+/*
+ * Unix SMB/Netbios implementation. Version 1.9. SMB parameters and setup
+ * Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
+ *
+ * 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 the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 675
+ * Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * This file also contains migration code to move from an old
+ * trust account password file stored in the file :
+ * ${SAMBA_HOME}/private/{domain}.{netbiosname}.mac
+ * into a record stored in the tdb ${SAMBA_HOME}/private/secrets.tdb
+ * database. JRA.
+ */
+
+#include "includes.h"
+
+extern pstring global_myname;
+
+
+static int mach_passwd_lock_depth;
+static FILE *mach_passwd_fp;
+
+/***************************************************************
+ Lock an fd. Abandon after waitsecs seconds.
+****************************************************************/
+
+static BOOL pw_file_lock(int fd, int type, int secs, int *plock_depth)
+{
+ if (fd < 0)
+ return False;
+
+ if(*plock_depth == 0) {
+ if (!do_file_lock(fd, secs, type)) {
+ DEBUG(10,("pw_file_lock: locking file failed, error = %s.\n",
+ strerror(errno)));
+ return False;
+ }
+ }
+
+ (*plock_depth)++;
+
+ return True;
+}
+
+/***************************************************************
+ Unlock an fd. Abandon after waitsecs seconds.
+****************************************************************/
+
+static BOOL pw_file_unlock(int fd, int *plock_depth)
+{
+ BOOL ret=True;
+
+ if(*plock_depth == 1)
+ ret = do_file_lock(fd, 5, F_UNLCK);
+
+ if (*plock_depth > 0)
+ (*plock_depth)--;
+
+ if(!ret)
+ DEBUG(10,("pw_file_unlock: unlocking file failed, error = %s.\n",
+ strerror(errno)));
+ return ret;
+}
+
+/************************************************************************
+ Routine to get the name for an old trust account file.
+************************************************************************/
+
+static void get_trust_account_file_name( char *domain, char *name, char *mac_file)
+{
+ unsigned int mac_file_len;
+
+ /* strip the filename to the last '/' */
+ get_private_directory(mac_file);
+ pstrcat(mac_file, "/");
+
+ mac_file_len = strlen(mac_file);
+
+ if ((int)(sizeof(pstring) - mac_file_len - strlen(domain) - strlen(name) - 6) < 0) {
+ DEBUG(0,("trust_password_lock: path %s too long to add trust details.\n",
+ mac_file));
+ return;
+ }
+
+ pstrcat(mac_file, domain);
+ pstrcat(mac_file, ".");
+ pstrcat(mac_file, name);
+ pstrcat(mac_file, ".mac");
+}
+
+/************************************************************************
+ Routine to lock the old trust account password file for a domain.
+ As this is a function to migrate to the new secrets.tdb, we never
+ create the file here, only open it.
+************************************************************************/
+
+static BOOL trust_password_file_lock(char *domain, char *name)
+{
+ pstring mac_file;
+
+ if(mach_passwd_lock_depth == 0) {
+ int fd;
+
+ get_trust_account_file_name( domain, name, mac_file);
+
+ if ((fd = sys_open(mac_file, O_RDWR, 0)) == -1)
+ return False;
+
+ if((mach_passwd_fp = fdopen(fd, "w+b")) == NULL) {
+ DEBUG(0,("trust_password_lock: cannot open file %s - Error was %s.\n",
+ mac_file, strerror(errno) ));
+ return False;
+ }
+
+ if(!pw_file_lock(fileno(mach_passwd_fp), F_WRLCK, 60, &mach_passwd_lock_depth)) {
+ DEBUG(0,("trust_password_lock: cannot lock file %s\n", mac_file));
+ fclose(mach_passwd_fp);
+ return False;
+ }
+
+ }
+
+ return True;
+}
+
+/************************************************************************
+ Routine to unlock the old trust account password file for a domain.
+************************************************************************/
+
+static BOOL trust_password_file_unlock(void)
+{
+ BOOL ret = pw_file_unlock(fileno(mach_passwd_fp), &mach_passwd_lock_depth);
+ if(mach_passwd_lock_depth == 0)
+ fclose(mach_passwd_fp);
+ return ret;
+}
+
+/************************************************************************
+ Routine to delete the old trust account password file for a domain.
+ Note that this file must be locked as it is truncated before the
+ delete. This is to ensure it only gets deleted by one smbd.
+************************************************************************/
+
+static BOOL trust_password_file_delete( char *domain, char *name )
+{
+ pstring mac_file;
+ int ret;
+
+ get_trust_account_file_name( domain, name, mac_file);
+ if(sys_ftruncate(fileno(mach_passwd_fp),(SMB_OFF_T)0) == -1) {
+ DEBUG(0,("trust_password_file_delete: Failed to truncate file %s (%s)\n",
+ mac_file, strerror(errno) ));
+ }
+ ret = unlink( mac_file );
+ return (ret != -1);
+}
+
+/************************************************************************
+ Routine to get the old trust account password for a domain - to convert
+ to the new secrets.tdb entry.
+ The user of this function must have locked the trust password file.
+************************************************************************/
+
+static BOOL get_trust_account_password_from_file( unsigned char *ret_pwd, time_t *pass_last_set_time)
+{
+ char linebuf[256];
+ char *p;
+ int i;
+ SMB_STRUCT_STAT st;
+ linebuf[0] = '\0';
+
+ *pass_last_set_time = (time_t)0;
+ memset(ret_pwd, '\0', 16);
+
+ if(sys_fstat(fileno(mach_passwd_fp), &st) == -1) {
+ DEBUG(0,("get_trust_account_password: Failed to stat file. Error was %s.\n",
+ strerror(errno) ));
+ return False;
+ }
+
+ /*
+ * If size is zero, another smbd has migrated this file
+ * to the secrets.tdb file, and we are in a race condition.
+ * Just ignore the file.
+ */
+
+ if (st.st_size == 0)
+ return False;
+
+ if(sys_fseek( mach_passwd_fp, (SMB_OFF_T)0, SEEK_SET) == -1) {
+ DEBUG(0,("get_trust_account_password: Failed to seek to start of file. Error was %s.\n",
+ strerror(errno) ));
+ return False;
+ }
+
+ fgets(linebuf, sizeof(linebuf), mach_passwd_fp);
+ if(ferror(mach_passwd_fp)) {
+ DEBUG(0,("get_trust_account_password: Failed to read password. Error was %s.\n",
+ strerror(errno) ));
+ return False;
+ }
+
+ if(linebuf[strlen(linebuf)-1] == '\n')
+ linebuf[strlen(linebuf)-1] = '\0';
+
+ /*
+ * The length of the line read
+ * must be 45 bytes ( <---XXXX 32 bytes-->:TLC-12345678
+ */
+
+ if(strlen(linebuf) != 45) {
+ DEBUG(0,("get_trust_account_password: Malformed trust password file (wrong length \
+- was %d, should be 45).\n", (int)strlen(linebuf)));
+#ifdef DEBUG_PASSWORD
+ DEBUG(100,("get_trust_account_password: line = |%s|\n", linebuf));
+#endif
+ return False;
+ }
+
+ /*
+ * Get the hex password.
+ */
+
+ if (!pdb_gethexpwd((char *)linebuf, ret_pwd) || linebuf[32] != ':' ||
+ strncmp(&linebuf[33], "TLC-", 4)) {
+ DEBUG(0,("get_trust_account_password: Malformed trust password file (incorrect format).\n"));
+#ifdef DEBUG_PASSWORD
+ DEBUG(100,("get_trust_account_password: line = |%s|\n", linebuf));
+#endif
+ return False;
+ }
+
+ /*
+ * Get the last changed time.
+ */
+ p = &linebuf[37];
+
+ for(i = 0; i < 8; i++) {
+ if(p[i] == '\0' || !isxdigit((int)p[i])) {
+ DEBUG(0,("get_trust_account_password: Malformed trust password file (no timestamp).\n"));
+#ifdef DEBUG_PASSWORD
+ DEBUG(100,("get_trust_account_password: line = |%s|\n", linebuf));
+#endif
+ return False;
+ }
+ }
+
+ /*
+ * p points at 8 characters of hex digits -
+ * read into a time_t as the seconds since
+ * 1970 that the password was last changed.
+ */
+
+ *pass_last_set_time = (time_t)strtol(p, NULL, 16);
+
+ return True;
+}
+
+/************************************************************************
+ Migrate an old DOMAIN.MACINE.mac password file to the tdb secrets db.
+************************************************************************/
+
+BOOL migrate_from_old_password_file(char *domain)
+{
+ struct machine_acct_pass pass;
+
+ if (!trust_password_file_lock(domain, global_myname))
+ return True;
+
+ if (!get_trust_account_password_from_file( pass.hash, &pass.mod_time)) {
+ trust_password_file_unlock();
+ return False;
+ }
+
+ if (!secrets_store(trust_keystr(domain), (void *)&pass, sizeof(pass)))
+ return False;
+
+ trust_password_file_delete(domain, global_myname);
+ trust_password_file_unlock();
+
+ return True;
+}
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