int net_rap_password(struct net_context *c, int argc, const char **argv)
{
struct cli_state *cli;
int ret;
if (argc < 3 || c->display_usage)
return net_rap_password_usage(c, argc, argv);
if (!NT_STATUS_IS_OK(net_make_ipc_connection(c, 0, &cli)))
return -1;
/* BB Add check for password lengths? */
ret = cli_oem_change_password(cli, argv[0], argv[2], argv[1]);
cli_shutdown(cli);
return ret;
}
int net_rap_password(int argc, const char **argv)
{
struct cli_state *cli;
int ret;
if (argc < 3)
return net_rap_password_usage(argc, argv);
if (!(cli = net_make_ipc_connection(0)))
return -1;
/* BB Add check for password lengths? */
ret = cli_oem_change_password(cli, argv[0], argv[2], argv[1]);
cli_shutdown(cli);
return ret;
}
/*************************************************************
change a password on a remote machine using IPC calls
*************************************************************/
BOOL remote_password_change(const char *remote_machine, const char *user_name,
const char *old_passwd, const char *new_passwd,
char *err_str, size_t err_str_len)
{
struct nmb_name calling, called;
struct cli_state cli;
struct in_addr ip;
*err_str = '\0';
if(!resolve_name( remote_machine, &ip, 0x20)) {
slprintf(err_str, err_str_len-1, "unable to find an IP address for machine %s.\n",
remote_machine );
return False;
}
ZERO_STRUCT(cli);
if (!cli_initialise(&cli) || !cli_connect(&cli, remote_machine, &ip)) {
slprintf(err_str, err_str_len-1, "unable to connect to SMB server on machine %s. Error was : %s.\n",
remote_machine, cli_errstr(&cli) );
return False;
}
make_nmb_name(&calling, global_myname() , 0x0);
make_nmb_name(&called , remote_machine, 0x20);
if (!cli_session_request(&cli, &calling, &called)) {
slprintf(err_str, err_str_len-1, "machine %s rejected the session setup. Error was : %s.\n",
remote_machine, cli_errstr(&cli) );
cli_shutdown(&cli);
return False;
}
cli.protocol = PROTOCOL_NT1;
if (!cli_negprot(&cli)) {
slprintf(err_str, err_str_len-1, "machine %s rejected the negotiate protocol. Error was : %s.\n",
remote_machine, cli_errstr(&cli) );
cli_shutdown(&cli);
return False;
}
/*
* We should connect as the anonymous user here, in case
* the server has "must change password" checked...
* Thanks to <*****@*****.**> for this fix.
*/
if (!cli_session_setup(&cli, "", "", 0, "", 0, "")) {
slprintf(err_str, err_str_len-1, "machine %s rejected the session setup. Error was : %s.\n",
remote_machine, cli_errstr(&cli) );
cli_shutdown(&cli);
return False;
}
if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
slprintf(err_str, err_str_len-1, "machine %s rejected the tconX on the IPC$ share. Error was : %s.\n",
remote_machine, cli_errstr(&cli) );
cli_shutdown(&cli);
return False;
}
if(!cli_oem_change_password(&cli, user_name, new_passwd, old_passwd)) {
slprintf(err_str, err_str_len-1, "machine %s rejected the password change: Error was : %s.\n",
remote_machine, cli_errstr(&cli) );
cli_shutdown(&cli);
return False;
}
cli_shutdown(&cli);
return True;
}
NTSTATUS remote_password_change(const char *remote_machine, const char *user_name,
const char *old_passwd, const char *new_passwd,
char **err_str)
{
struct cli_state *cli = NULL;
struct rpc_pipe_client *pipe_hnd = NULL;
char *user, *domain, *p;
NTSTATUS result;
bool pass_must_change = False;
user = talloc_strdup(talloc_tos(), user_name);
SMB_ASSERT(user != NULL);
domain = talloc_strdup(talloc_tos(), "");
SMB_ASSERT(domain != NULL);
/* allow usernames of the form domain\\user or domain/user */
if ((p = strchr_m(user,'\\')) || (p = strchr_m(user,'/')) ||
(p = strchr_m(user,*lp_winbind_separator()))) {
*p = 0;
domain = user;
user = p+1;
}
*err_str = NULL;
result = cli_connect_nb(remote_machine, NULL, 0, 0x20, NULL,
SMB_SIGNING_DEFAULT, 0, &cli);
if (!NT_STATUS_IS_OK(result)) {
if (asprintf(err_str, "Unable to connect to SMB server on "
"machine %s. Error was : %s.\n",
remote_machine, nt_errstr(result))==-1) {
*err_str = NULL;
}
return result;
}
result = cli_negprot(cli, PROTOCOL_NT1);
if (!NT_STATUS_IS_OK(result)) {
if (asprintf(err_str, "machine %s rejected the negotiate "
"protocol. Error was : %s.\n",
remote_machine, nt_errstr(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
/* Given things like SMB signing, restrict anonymous and the like,
try an authenticated connection first */
result = cli_session_setup(cli, user_name,
old_passwd, strlen(old_passwd)+1,
old_passwd, strlen(old_passwd)+1, "");
if (!NT_STATUS_IS_OK(result)) {
/* Password must change or Password expired are the only valid
* error conditions here from where we can proceed, the rest like
* account locked out or logon failure will lead to errors later
* anyway */
if (!NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_MUST_CHANGE) &&
!NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_EXPIRED)) {
if (asprintf(err_str, "Could not connect to machine %s: "
"%s\n", remote_machine, nt_errstr(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
pass_must_change = True;
/*
* We should connect as the anonymous user here, in case
* the server has "must change password" checked...
* Thanks to <*****@*****.**> for this fix.
*/
result = cli_session_setup(cli, "", "", 0, "", 0, "");
if (!NT_STATUS_IS_OK(result)) {
if (asprintf(err_str, "machine %s rejected the session "
"setup. Error was : %s.\n",
remote_machine, nt_errstr(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
result = cli_init_creds(cli, "", "", NULL);
if (!NT_STATUS_IS_OK(result)) {
cli_shutdown(cli);
return result;
}
} else {
result = cli_init_creds(cli, user, domain, old_passwd);
if (!NT_STATUS_IS_OK(result)) {
cli_shutdown(cli);
return result;
}
}
result = cli_tree_connect(cli, "IPC$", "IPC", "", 1);
if (!NT_STATUS_IS_OK(result)) {
if (asprintf(err_str, "machine %s rejected the tconX on the "
"IPC$ share. Error was : %s.\n",
remote_machine, nt_errstr(result))) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
/* Try not to give the password away too easily */
if (!pass_must_change) {
result = cli_rpc_pipe_open_ntlmssp(cli,
&ndr_table_samr.syntax_id,
NCACN_NP,
DCERPC_AUTH_LEVEL_PRIVACY,
domain, user,
old_passwd,
&pipe_hnd);
} else {
/*
* If the user password must be changed the ntlmssp bind will
* fail the same way as the session setup above did. The
* difference ist that with a pipe bind we don't get a good
* error message, the result will be that the rpc call below
* will just fail. So we do it anonymously, there's no other
* way.
*/
result = cli_rpc_pipe_open_noauth(
cli, &ndr_table_samr.syntax_id, &pipe_hnd);
}
if (!NT_STATUS_IS_OK(result)) {
if (lp_client_lanman_auth()) {
/* Use the old RAP method. */
if (!cli_oem_change_password(cli, user_name, new_passwd, old_passwd)) {
result = cli_nt_error(cli);
if (asprintf(err_str, "machine %s rejected the "
"password change: Error was : %s.\n",
remote_machine, nt_errstr(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
} else {
if (asprintf(err_str, "SAMR connection to machine %s "
"failed. Error was %s, but LANMAN password "
"changes are disabled\n",
remote_machine, nt_errstr(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
}
result = rpccli_samr_chgpasswd_user2(pipe_hnd, talloc_tos(),
user_name, new_passwd, old_passwd);
if (NT_STATUS_IS_OK(result)) {
/* Great - it all worked! */
cli_shutdown(cli);
return NT_STATUS_OK;
} else if (!(NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)
|| NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL))) {
/* it failed, but for reasons such as wrong password, too short etc ... */
if (asprintf(err_str, "machine %s rejected the password change: "
"Error was : %s.\n",
remote_machine, get_friendly_nt_error_msg(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
/* OK, that failed, so try again... */
TALLOC_FREE(pipe_hnd);
/* Try anonymous NTLMSSP... */
result = cli_init_creds(cli, "", "", NULL);
if (!NT_STATUS_IS_OK(result)) {
cli_shutdown(cli);
return result;
}
result = NT_STATUS_UNSUCCESSFUL;
/* OK, this is ugly, but... try an anonymous pipe. */
result = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr.syntax_id,
&pipe_hnd);
if ( NT_STATUS_IS_OK(result) &&
(NT_STATUS_IS_OK(result = rpccli_samr_chgpasswd_user2(
pipe_hnd, talloc_tos(), user_name,
new_passwd, old_passwd)))) {
/* Great - it all worked! */
cli_shutdown(cli);
return NT_STATUS_OK;
} else {
if (!(NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)
|| NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL))) {
/* it failed, but again it was due to things like new password too short */
if (asprintf(err_str, "machine %s rejected the "
"(anonymous) password change: Error was : "
"%s.\n", remote_machine,
get_friendly_nt_error_msg(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
}
/* We have failed to change the user's password, and we think the server
just might not support SAMR password changes, so fall back */
if (lp_client_lanman_auth()) {
/* Use the old RAP method. */
if (cli_oem_change_password(cli, user_name, new_passwd, old_passwd)) {
/* SAMR failed, but the old LanMan protocol worked! */
cli_shutdown(cli);
return NT_STATUS_OK;
}
result = cli_nt_error(cli);
if (asprintf(err_str, "machine %s rejected the password "
"change: Error was : %s.\n",
remote_machine, nt_errstr(result)) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return result;
} else {
if (asprintf(err_str, "SAMR connection to machine %s "
"failed. Error was %s, but LANMAN password "
"changes are disabled\n",
nt_errstr(result), remote_machine) == -1) {
*err_str = NULL;
}
cli_shutdown(cli);
return NT_STATUS_UNSUCCESSFUL;
}
}
}
NTSTATUS remote_password_change(const char *remote_machine, const char *user_name,
const char *old_passwd, const char *new_passwd,
char **err_str)
{
struct nmb_name calling, called;
struct cli_state *cli;
struct rpc_pipe_client *pipe_hnd;
struct sockaddr_storage ss;
NTSTATUS result;
bool pass_must_change = False;
*err_str = NULL;
if(!resolve_name( remote_machine, &ss, 0x20)) {
asprintf(err_str, "Unable to find an IP address for machine "
"%s.\n", remote_machine);
return NT_STATUS_UNSUCCESSFUL;
}
cli = cli_initialise();
if (!cli) {
return NT_STATUS_NO_MEMORY;
}
result = cli_connect(cli, remote_machine, &ss);
if (!NT_STATUS_IS_OK(result)) {
asprintf(err_str, "Unable to connect to SMB server on "
"machine %s. Error was : %s.\n",
remote_machine, nt_errstr(result));
cli_shutdown(cli);
return result;
}
make_nmb_name(&calling, global_myname() , 0x0);
make_nmb_name(&called , remote_machine, 0x20);
if (!cli_session_request(cli, &calling, &called)) {
asprintf(err_str, "machine %s rejected the session setup. "
"Error was : %s.\n",
remote_machine, cli_errstr(cli) );
result = cli_nt_error(cli);
cli_shutdown(cli);
return result;
}
cli->protocol = PROTOCOL_NT1;
if (!cli_negprot(cli)) {
asprintf(err_str, "machine %s rejected the negotiate "
"protocol. Error was : %s.\n",
remote_machine, cli_errstr(cli) );
result = cli_nt_error(cli);
cli_shutdown(cli);
return result;
}
/* Given things like SMB signing, restrict anonymous and the like,
try an authenticated connection first */
result = cli_session_setup(cli, user_name,
old_passwd, strlen(old_passwd)+1,
old_passwd, strlen(old_passwd)+1, "");
if (!NT_STATUS_IS_OK(result)) {
/* Password must change or Password expired are the only valid
* error conditions here from where we can proceed, the rest like
* account locked out or logon failure will lead to errors later
* anyway */
if (!NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_MUST_CHANGE) &&
!NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_EXPIRED)) {
asprintf(err_str, "Could not connect to machine %s: "
"%s\n", remote_machine, cli_errstr(cli));
cli_shutdown(cli);
return result;
}
pass_must_change = True;
/*
* We should connect as the anonymous user here, in case
* the server has "must change password" checked...
* Thanks to <*****@*****.**> for this fix.
*/
result = cli_session_setup(cli, "", "", 0, "", 0, "");
if (!NT_STATUS_IS_OK(result)) {
asprintf(err_str, "machine %s rejected the session "
"setup. Error was : %s.\n",
remote_machine, cli_errstr(cli) );
cli_shutdown(cli);
return result;
}
cli_init_creds(cli, "", "", NULL);
} else {
cli_init_creds(cli, user_name, "", old_passwd);
}
if (!cli_send_tconX(cli, "IPC$", "IPC", "", 1)) {
asprintf(err_str, "machine %s rejected the tconX on the IPC$ "
"share. Error was : %s.\n",
remote_machine, cli_errstr(cli) );
result = cli_nt_error(cli);
cli_shutdown(cli);
return result;
}
/* Try not to give the password away too easily */
if (!pass_must_change) {
pipe_hnd = cli_rpc_pipe_open_ntlmssp(cli,
PI_SAMR,
PIPE_AUTH_LEVEL_PRIVACY,
"", /* what domain... ? */
user_name,
old_passwd,
&result);
} else {
/*
* If the user password must be changed the ntlmssp bind will
* fail the same way as the session setup above did. The
* difference ist that with a pipe bind we don't get a good
* error message, the result will be that the rpc call below
* will just fail. So we do it anonymously, there's no other
* way.
*/
pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
}
if (!pipe_hnd) {
if (lp_client_lanman_auth()) {
/* Use the old RAP method. */
if (!cli_oem_change_password(cli, user_name, new_passwd, old_passwd)) {
asprintf(err_str, "machine %s rejected the "
"password change: Error was : %s.\n",
remote_machine, cli_errstr(cli) );
result = cli_nt_error(cli);
cli_shutdown(cli);
return result;
}
} else {
asprintf(err_str, "SAMR connection to machine %s "
"failed. Error was %s, but LANMAN password "
"changed are disabled\n",
nt_errstr(result), remote_machine);
result = cli_nt_error(cli);
cli_shutdown(cli);
return result;
}
}
if (NT_STATUS_IS_OK(result = rpccli_samr_chgpasswd_user(pipe_hnd, pipe_hnd->mem_ctx, user_name,
new_passwd, old_passwd))) {
/* Great - it all worked! */
cli_shutdown(cli);
return NT_STATUS_OK;
} else if (!(NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)
|| NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL))) {
/* it failed, but for reasons such as wrong password, too short etc ... */
asprintf(err_str, "machine %s rejected the password change: "
"Error was : %s.\n",
remote_machine, get_friendly_nt_error_msg(result));
cli_shutdown(cli);
return result;
}
/* OK, that failed, so try again... */
cli_rpc_pipe_close(pipe_hnd);
/* Try anonymous NTLMSSP... */
cli_init_creds(cli, "", "", NULL);
result = NT_STATUS_UNSUCCESSFUL;
/* OK, this is ugly, but... try an anonymous pipe. */
pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
if ( pipe_hnd &&
(NT_STATUS_IS_OK(result = rpccli_samr_chgpasswd_user(pipe_hnd,
pipe_hnd->mem_ctx,
user_name,
new_passwd,
old_passwd)))) {
/* Great - it all worked! */
cli_shutdown(cli);
return NT_STATUS_OK;
} else {
if (!(NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED)
|| NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL))) {
/* it failed, but again it was due to things like new password too short */
asprintf(err_str, "machine %s rejected the "
"(anonymous) password change: Error was : "
"%s.\n", remote_machine,
get_friendly_nt_error_msg(result));
cli_shutdown(cli);
return result;
}
/* We have failed to change the user's password, and we think the server
just might not support SAMR password changes, so fall back */
if (lp_client_lanman_auth()) {
/* Use the old RAP method. */
if (cli_oem_change_password(cli, user_name, new_passwd, old_passwd)) {
/* SAMR failed, but the old LanMan protocol worked! */
cli_shutdown(cli);
return NT_STATUS_OK;
}
asprintf(err_str, "machine %s rejected the password "
"change: Error was : %s.\n",
remote_machine, cli_errstr(cli) );
result = cli_nt_error(cli);
cli_shutdown(cli);
return result;
} else {
asprintf(err_str, "SAMR connection to machine %s "
"failed. Error was %s, but LANMAN password "
"changed are disabled\n",
nt_errstr(result), remote_machine);
cli_shutdown(cli);
return NT_STATUS_UNSUCCESSFUL;
}
}
}
