Let dsgetdcname() return a struct netr_DsRGetDCNameInfo.
[gd/samba/.git] / source / libsmb / trusts_util.c
index 055851f6b7bf0f9789d96b459a92bb3292cfef52..c079fb149a8bc40ee339627a42008f77efad174b 100644 (file)
@@ -1,4 +1,4 @@
-/* 
+/*
  *  Unix SMB/CIFS implementation.
  *  Routines to operate on various trust relationships
  *  Copyright (C) Andrew Bartlett                   2001
@@ -6,7 +6,7 @@
  *
  *  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
+ *  the Free Software Foundation; either version 3 of the License, or
  *  (at your option) any later version.
  *  
  *  This program is distributed in the hope that it will be useful,
@@ -15,8 +15,7 @@
  *  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.
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  */
 
 #include "includes.h"
  Caller must have the cli connected to the netlogon pipe
  already.
 **********************************************************/
-static NTSTATUS just_change_the_password(struct cli_state *cli, TALLOC_CTX *mem_ctx, 
-                                        unsigned char orig_trust_passwd_hash[16],
-                                        unsigned char new_trust_passwd_hash[16])
+
+static NTSTATUS just_change_the_password(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx, 
+                                        const unsigned char orig_trust_passwd_hash[16],
+                                        const unsigned char new_trust_passwd_hash[16],
+                                        uint32 sec_channel_type)
 {
        NTSTATUS result;
-       uint32 neg_flags = 0x000001ff;
 
-       result = cli_nt_setup_creds(cli, get_sec_chan(), orig_trust_passwd_hash, &neg_flags, 2);
-       
-       if (!NT_STATUS_IS_OK(result)) {
-               DEBUG(1,("just_change_the_password: unable to setup creds (%s)!\n",
-                        nt_errstr(result)));
-               return result;
+       /* Check if the netlogon pipe is open using schannel. If so we
+          already have valid creds. If not we must set them up. */
+
+       if (cli->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) {
+               uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS;
+
+               result = rpccli_netlogon_setup_creds(cli, 
+                                       cli->cli->desthost, /* server name */
+                                       lp_workgroup(), /* domain */
+                                       global_myname(), /* client name */
+                                       global_myname(), /* machine account name */
+                                       orig_trust_passwd_hash,
+                                       sec_channel_type,
+                                       &neg_flags);
+
+               if (!NT_STATUS_IS_OK(result)) {
+                       DEBUG(3,("just_change_the_password: unable to setup creds (%s)!\n",
+                                nt_errstr(result)));
+                       return result;
+               }
        }
 
-       result = cli_net_srv_pwset(cli, mem_ctx, global_myname(), new_trust_passwd_hash);
+       {
+               struct netr_Authenticator clnt_creds, srv_cred;
+               struct samr_Password new_password;
+
+               netlogon_creds_client_step(cli->dc, &clnt_creds);
+
+               cred_hash3(new_password.hash,
+                          new_trust_passwd_hash,
+                          cli->dc->sess_key, 1);
+
+               result = rpccli_netr_ServerPasswordSet(cli, mem_ctx,
+                                                      cli->dc->remote_machine,
+                                                      cli->dc->mach_acct,
+                                                      sec_channel_type,
+                                                      global_myname(),
+                                                      &clnt_creds,
+                                                      &srv_cred,
+                                                      &new_password);
+
+               /* Always check returned credentials. */
+               if (!netlogon_creds_client_check(cli->dc, &srv_cred.cred)) {
+                       DEBUG(0,("rpccli_netr_ServerPasswordSet: "
+                               "credentials chain check failed\n"));
+                       return NT_STATUS_ACCESS_DENIED;
+               }
+       }
 
        if (!NT_STATUS_IS_OK(result)) {
                DEBUG(0,("just_change_the_password: unable to change password (%s)!\n",
@@ -59,8 +98,10 @@ static NTSTATUS just_change_the_password(struct cli_state *cli, TALLOC_CTX *mem_
  Caller must have already setup the connection to the NETLOGON pipe
 **********************************************************/
 
-NTSTATUS trust_pw_change_and_store_it(struct cli_state *cli, TALLOC_CTX *mem_ctx, 
-                                     unsigned char orig_trust_passwd_hash[16])
+NTSTATUS trust_pw_change_and_store_it(struct rpc_pipe_client *cli, TALLOC_CTX *mem_ctx, 
+                                     const char *domain,
+                                     unsigned char orig_trust_passwd_hash[16],
+                                     uint32 sec_channel_type)
 {
        unsigned char new_trust_passwd_hash[16];
        char *new_trust_passwd;
@@ -69,21 +110,25 @@ NTSTATUS trust_pw_change_and_store_it(struct cli_state *cli, TALLOC_CTX *mem_ctx
                
        /* Create a random machine account password */
        str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
-       new_trust_passwd = talloc_strdup(mem_ctx, str);
+
+       if ((new_trust_passwd = talloc_strdup(mem_ctx, str)) == NULL) {
+               DEBUG(0, ("talloc_strdup failed\n"));
+               return NT_STATUS_NO_MEMORY;
+       }
        
        E_md4hash(new_trust_passwd, new_trust_passwd_hash);
 
        nt_status = just_change_the_password(cli, mem_ctx, orig_trust_passwd_hash,
-                                            new_trust_passwd_hash);
+                                            new_trust_passwd_hash, sec_channel_type);
        
        if (NT_STATUS_IS_OK(nt_status)) {
                DEBUG(3,("%s : trust_pw_change_and_store_it: Changed password.\n", 
-                        timestring(False)));
+                        current_timestring(False)));
                /*
                 * Return the result of trying to write the new password
                 * back into the trust account file.
                 */
-               if (!secrets_store_machine_password(new_trust_passwd)) {
+               if (!secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type)) {
                        nt_status = NT_STATUS_UNSUCCESSFUL;
                }
        }
@@ -97,78 +142,112 @@ NTSTATUS trust_pw_change_and_store_it(struct cli_state *cli, TALLOC_CTX *mem_ctx
  already setup the connection to the NETLOGON pipe
 **********************************************************/
 
-NTSTATUS trust_pw_find_change_and_store_it(struct cli_state *cli, TALLOC_CTX *mem_ctx, 
+NTSTATUS trust_pw_find_change_and_store_it(struct rpc_pipe_client *cli, 
+                                          TALLOC_CTX *mem_ctx, 
                                           const char *domain) 
 {
        unsigned char old_trust_passwd_hash[16];
-       char *up_domain;
-       
-       up_domain = talloc_strdup(mem_ctx, domain);
+       uint32 sec_channel_type = 0;
 
        if (!secrets_fetch_trust_account_password(domain,
                                                  old_trust_passwd_hash, 
-                                                 NULL)) {
+                                                 NULL, &sec_channel_type)) {
                DEBUG(0, ("could not fetch domain secrets for domain %s!\n", domain));
                return NT_STATUS_UNSUCCESSFUL;
        }
        
-       return trust_pw_change_and_store_it(cli, mem_ctx, old_trust_passwd_hash);
-       
+       return trust_pw_change_and_store_it(cli, mem_ctx, domain,
+                                           old_trust_passwd_hash,
+                                           sec_channel_type);
 }
 
+/*********************************************************************
+ Enumerate the list of trusted domains from a DC
+*********************************************************************/
 
-/**
- * Verify whether or not given domain is trusted.
- *
- * @param domain_name name of the domain to be verified
- * @return true if domain is one of the trusted once or
- *         false if otherwise
- **/
-BOOL is_trusted_domain(const char* dom_name)
+bool enumerate_domain_trusts( TALLOC_CTX *mem_ctx, const char *domain,
+                                     char ***domain_names, uint32 *num_domains,
+                                    DOM_SID **sids )
 {
-       int enum_ctx = 0;
-       const int trustdom_size = 10;
-       int num_domains, i;
-       TRUSTDOM **domains;
-       NTSTATUS result;
-       fstring trustdom_name;
-       DOM_SID trustdom_sid;
-       TALLOC_CTX *mem_ctx;
-       
-       /*
-        * Query the secrets db as an ultimate source of information
-        * about trusted domain names. This is PDC or BDC case.
-        */
-       mem_ctx = talloc_init("is_trusted_domain");
-       
-       do {
-               result = secrets_get_trusted_domains(mem_ctx, &enum_ctx, trustdom_size,
-                                                    &num_domains, &domains);
-               /* compare each returned entry against incoming connection's domain */
-               for (i = 0; i < num_domains; i++) {
-                       pull_ucs2_fstring(trustdom_name, domains[i]->name);
-                       if (strequal(trustdom_name, dom_name)) {
-                               talloc_destroy(mem_ctx);
-                               return True;
-                       }
-               }                                               
-       } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
-               
-       /*
-        * Query the trustdom_cache updated periodically. The only
-        * way for domain member server.
-        */
-       if (trustdom_cache_enable() &&
-               trustdom_cache_fetch(dom_name, &trustdom_sid)) {
-               trustdom_cache_shutdown();
-               return True;
+       POLICY_HND      pol;
+       NTSTATUS        result = NT_STATUS_UNSUCCESSFUL;
+       fstring         dc_name;
+       struct sockaddr_storage dc_ss;
+       uint32          enum_ctx = 0;
+       struct cli_state *cli = NULL;
+       struct rpc_pipe_client *lsa_pipe;
+       bool            retry;
+       struct lsa_DomainList dom_list;
+       int i;
+
+       *domain_names = NULL;
+       *num_domains = 0;
+       *sids = NULL;
+
+       /* lookup a DC first */
+
+       if ( !get_dc_name(domain, NULL, dc_name, &dc_ss) ) {
+               DEBUG(3,("enumerate_domain_trusts: can't locate a DC for domain %s\n",
+                       domain));
+               return False;
        }
 
-       /*
-        * if nothing's been found, then give up here, although
-        * the last resort might be to query the PDC.
-        */
-       return False;
-}
+       /* setup the anonymous connection */
+
+       result = cli_full_connection( &cli, global_myname(), dc_name, &dc_ss, 0, "IPC$", "IPC",
+               "", "", "", 0, Undefined, &retry);
+       if ( !NT_STATUS_IS_OK(result) )
+               goto done;
 
+       /* open the LSARPC_PIPE */
+
+       lsa_pipe = cli_rpc_pipe_open_noauth( cli, PI_LSARPC, &result );
+       if ( !lsa_pipe) {
+               goto done;
+       }
+
+       /* get a handle */
+
+       result = rpccli_lsa_open_policy(lsa_pipe, mem_ctx, True,
+               LSA_POLICY_VIEW_LOCAL_INFORMATION, &pol);
+       if ( !NT_STATUS_IS_OK(result) )
+               goto done;
+
+       /* Lookup list of trusted domains */
+
+       result = rpccli_lsa_EnumTrustDom(lsa_pipe, mem_ctx,
+                                        &pol,
+                                        &enum_ctx,
+                                        &dom_list,
+                                        (uint32_t)-1);
+       if ( !NT_STATUS_IS_OK(result) )
+               goto done;
+
+       *num_domains = dom_list.count;
+
+       *domain_names = TALLOC_ZERO_ARRAY(mem_ctx, char *, *num_domains);
+       if (!*domain_names) {
+               result = NT_STATUS_NO_MEMORY;
+               goto done;
+       }
+
+       *sids = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, *num_domains);
+       if (!*sids) {
+               result = NT_STATUS_NO_MEMORY;
+               goto done;
+       }
+
+       for (i=0; i< *num_domains; i++) {
+               (*domain_names)[i] = CONST_DISCARD(char *, dom_list.domains[i].name.string);
+               (*sids)[i] = *dom_list.domains[i].sid;
+       }
+
+done:
+       /* cleanup */
+       if (cli) {
+               DEBUG(10,("enumerate_domain_trusts: shutting down connection...\n"));
+               cli_shutdown( cli );
+       }
+
+       return NT_STATUS_IS_OK(result);
+}