mirror of
https://github.com/samba-team/samba.git
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62ea16ae36
(This used to be commit 418bdd5919
)
244 lines
7.0 KiB
C
244 lines
7.0 KiB
C
/*
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Unix SMB/Netbios implementation.
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Version 3.0
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Winbind daemon - pam auth funcions
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Copyright (C) Andrew Tridgell 2000
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Copyright (C) Tim Potter 2001
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Copyright (C) Andrew Bartlett 2001
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "winbindd.h"
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/* Return a password structure from a username. */
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enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
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{
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NTSTATUS result;
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fstring name_domain, name_user;
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int passlen;
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unsigned char trust_passwd[16];
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time_t last_change_time;
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uint32 smb_uid_low;
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NET_USER_INFO_3 info3;
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struct cli_state *cli = NULL;
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uchar chal[8];
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TALLOC_CTX *mem_ctx;
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DATA_BLOB lm_resp;
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DATA_BLOB nt_resp;
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extern pstring global_myname;
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DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
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state->request.data.auth.user));
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if (!(mem_ctx = talloc_init_named("winbind pam auth for %s", state->request.data.auth.user))) {
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DEBUG(0, ("winbindd_pam_auth: could not talloc_init()!\n"));
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return WINBINDD_ERROR;
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}
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/* Parse domain and username */
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if (!parse_domain_user(state->request.data.auth.user, name_domain,
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name_user)) {
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DEBUG(5,("no domain seperator (%s) in username (%s) - failing auth\n", lp_winbind_separator(), state->request.data.auth.user));
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talloc_destroy(mem_ctx);
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return WINBINDD_ERROR;
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}
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passlen = strlen(state->request.data.auth.pass);
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if (!*state->request.data.auth.pass) {
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return WINBINDD_ERROR;
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talloc_destroy(mem_ctx);
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} else {
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unsigned char local_lm_response[24];
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unsigned char local_nt_response[24];
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generate_random_buffer(chal, 8, False);
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SMBencrypt( (const uchar *)state->request.data.auth.pass, chal, local_lm_response);
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SMBNTencrypt((const uchar *)state->request.data.auth.pass, chal, local_nt_response);
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lm_resp = data_blob_talloc(mem_ctx, local_lm_response, sizeof(local_lm_response));
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nt_resp = data_blob_talloc(mem_ctx, local_nt_response, sizeof(local_nt_response));
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}
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/*
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* Get the machine account password for our primary domain
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*/
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if (!secrets_fetch_trust_account_password(
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lp_workgroup(), trust_passwd, &last_change_time)) {
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DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
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"password for domain %s\n", lp_workgroup()));
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talloc_destroy(mem_ctx);
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return WINBINDD_ERROR;
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}
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/* We really don't care what LUID we give the user. */
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generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
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ZERO_STRUCT(info3);
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result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd, &cli);
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if (!NT_STATUS_IS_OK(result)) {
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DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
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goto done;
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}
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result = cli_netlogon_sam_network_logon(cli, mem_ctx,
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name_user, name_domain,
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global_myname, chal,
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lm_resp, nt_resp,
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&info3);
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uni_group_cache_store_netlogon(mem_ctx, &info3);
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done:
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if (cli)
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cli_shutdown(cli);
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talloc_destroy(mem_ctx);
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return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
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}
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/* Challenge Response Authentication Protocol */
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enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state)
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{
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NTSTATUS result;
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unsigned char trust_passwd[16];
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time_t last_change_time;
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NET_USER_INFO_3 info3;
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struct cli_state *cli = NULL;
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TALLOC_CTX *mem_ctx;
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const char *domain = NULL;
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DATA_BLOB lm_resp, nt_resp;
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extern pstring global_myname;
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DEBUG(3, ("[%5d]: pam auth crap domain: %s user: %s\n", state->pid,
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state->request.data.auth_crap.user, state->request.data.auth_crap.user));
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if (!(mem_ctx = talloc_init_named("winbind pam auth crap for %s", state->request.data.auth.user))) {
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DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
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return WINBINDD_ERROR;
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}
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if (*state->request.data.auth_crap.domain) {
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domain = talloc_strdup(mem_ctx, state->request.data.auth_crap.domain);
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} else if (lp_winbind_use_default_domain()) {
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domain = talloc_strdup(mem_ctx, lp_workgroup());
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} else {
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DEBUG(5,("no domain specified with username (%s) - failing auth\n", state->request.data.auth.user));
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talloc_destroy(mem_ctx);
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return WINBINDD_ERROR;
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}
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if (!domain) {
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DEBUG(0,("winbindd_pam_auth_crap: talloc_strdup failed!\n"));
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talloc_destroy(mem_ctx);
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return WINBINDD_ERROR;
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}
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lm_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.lm_resp, state->request.data.auth_crap.lm_resp_len);
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nt_resp = data_blob_talloc(mem_ctx, state->request.data.auth_crap.nt_resp, state->request.data.auth_crap.nt_resp_len);
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/*
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* Get the machine account password for our primary domain
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*/
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if (!secrets_fetch_trust_account_password(
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lp_workgroup(), trust_passwd, &last_change_time)) {
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DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
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"password for domain %s\n", lp_workgroup()));
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talloc_destroy(mem_ctx);
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return WINBINDD_ERROR;
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}
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ZERO_STRUCT(info3);
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result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd, &cli);
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if (!NT_STATUS_IS_OK(result)) {
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DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
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goto done;
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}
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result = cli_netlogon_sam_network_logon(cli, mem_ctx,
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state->request.data.auth_crap.user, domain,
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global_myname, state->request.data.auth_crap.chal,
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lm_resp, nt_resp,
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&info3);
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uni_group_cache_store_netlogon(mem_ctx, &info3);
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done:
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talloc_destroy(mem_ctx);
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if (cli)
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cli_shutdown(cli);
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return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
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}
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/* Change a user password */
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enum winbindd_result winbindd_pam_chauthtok(struct winbindd_cli_state *state)
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{
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char *oldpass, *newpass;
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fstring domain, user;
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uchar nt_oldhash[16];
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uchar lm_oldhash[16];
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CLI_POLICY_HND *hnd;
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DEBUG(3, ("[%5d]: pam chauthtok %s\n", state->pid,
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state->request.data.chauthtok.user));
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/* Setup crap */
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if (state == NULL)
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return WINBINDD_ERROR;
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if (!parse_domain_user(state->request.data.chauthtok.user, domain,
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user))
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return WINBINDD_ERROR;
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/* Change password */
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oldpass = state->request.data.chauthtok.oldpass;
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newpass = state->request.data.chauthtok.newpass;
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/* Get sam handle */
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if (!(hnd = cm_get_sam_handle(domain)))
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return WINBINDD_ERROR;
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if (!cli_oem_change_password(hnd->cli, user, newpass, oldpass)) {
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DEBUG(0, ("password change failed for user %s/%s\n", domain,
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user));
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return WINBINDD_ERROR;
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}
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return WINBINDD_OK;
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}
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