r23779: Change from v2 or later to v3 or later.
[jra/samba/.git] / source3 / utils / net_rpc_join.c
index 2fde6291c2a093f55f5a6771ad0fa0b7222947e7..2f04d3951a59b8ec1383a99783d3a4d371d4ff82 100644 (file)
@@ -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,
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  
 #include "includes.h"
-#include "../utils/net.h"
+#include "utils/net.h"
 
 /* Macro for checking RPC error codes to make things more readable */
 
 #define CHECK_RPC_ERR(rpc, msg) \
         if (!NT_STATUS_IS_OK(result = rpc)) { \
-                DEBUG(0, (msg ": %s\n", get_nt_error_msg(result))); \
+                DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
                 goto done; \
         }
 
                 goto done; \
         }
 
+/**
+ * confirm that a domain join is still valid
+ *
+ * @return A shell status integer (0 for success)
+ *
+ **/
+int net_rpc_join_ok(const char *domain, const char *server, struct in_addr *ip )
+{
+       uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
+       struct cli_state *cli = NULL;
+       struct rpc_pipe_client *pipe_hnd = NULL;
+       struct rpc_pipe_client *netlogon_pipe = NULL;
+       NTSTATUS ntret = NT_STATUS_UNSUCCESSFUL;
+
+       /* Connect to remote machine */
+       if (!(cli = net_make_ipc_connection_ex(domain, server, ip, (NET_FLAGS_ANONYMOUS|NET_FLAGS_PDC)))) {
+               return -1;
+       }
+
+       /* Setup the creds as though we're going to do schannel... */
+        netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, &ntret);
+
+       /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
+          to negotiate schannel, but the creds were set up ok. That'll have to do. */
+
+        if (!netlogon_pipe) {
+               if (NT_STATUS_EQUAL(ntret, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
+                       cli_shutdown(cli);
+                       return 0;
+               } else {
+                       DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
+                                       "key from server %s for domain %s. Error was %s\n",
+                               cli->desthost, domain, nt_errstr(ntret) ));
+                       cli_shutdown(cli);
+                       return -1;
+               }
+       }
+
+       /* Only do the rest of the schannel test if the client is allowed to do this. */
+       if (!lp_client_schannel()) {
+               cli_shutdown(cli);
+               /* We're good... */
+               return 0;
+       }
+
+       pipe_hnd = cli_rpc_pipe_open_schannel_with_key(cli, PI_NETLOGON,
+                               PIPE_AUTH_LEVEL_PRIVACY,
+                               domain, netlogon_pipe->dc, &ntret);
+
+       if (!pipe_hnd) {
+               DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
+                               "on netlogon pipe to server %s for domain %s. Error was %s\n",
+                       cli->desthost, domain, nt_errstr(ntret) ));
+               cli_shutdown(cli);
+               return -1;
+       }
+
+       cli_shutdown(cli);
+       return 0;
+}
+
 /**
  * Join a domain using the administrator username and password
  *
  *
  **/
 
-int net_rpc_join(int argc, const char **argv) 
+int net_rpc_join_newstyle(int argc, const char **argv) 
 {
 
-       extern pstring global_myname;
-
        /* libsmb variables */
 
        struct cli_state *cli;
-       fstring acct_name;
        TALLOC_CTX *mem_ctx;
-        uint32 acb_info;
+        uint32 acb_info = ACB_WSTRUST;
+       uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|(lp_client_schannel() ? NETLOGON_NEG_SCHANNEL : 0);
+       uint32 sec_channel_type;
+       struct rpc_pipe_client *pipe_hnd = NULL;
 
        /* rpc variables */
 
        POLICY_HND lsa_pol, sam_pol, domain_pol, user_pol;
-       DOM_SID domain_sid;
+       DOM_SID *domain_sid;
        uint32 user_rid;
 
        /* Password stuff */
 
        char *clear_trust_password = NULL;
-       fstring ucs2_trust_password;
-       int ucs2_pw_len;
-       uchar stored_md4_trust_password[16];
-       uchar pwbuf[516], sess_key[16];
+       uchar pwbuf[516];
        SAM_USERINFO_CTR ctr;
        SAM_USER_INFO_24 p24;
-       SAM_USER_INFO_10 p10;
+       SAM_USER_INFO_16 p16;
+       uchar md4_trust_password[16];
 
        /* Misc */
 
        NTSTATUS result;
        int retval = 1;
-       fstring domain;
+       char *domain = NULL;
        uint32 num_rids, *name_types, *user_rids;
        uint32 flags = 0x3e8;
-       char *names;
-       
-       /* Connect to remote machine */
+       char *acct_name;
+       const char *const_acct_name;
+
+       /* check what type of join */
+       if (argc >= 0) {
+               sec_channel_type = get_sec_channel_type(argv[0]);
+       } else {
+               sec_channel_type = get_sec_channel_type(NULL);
+       }
+
+       switch (sec_channel_type) {
+       case SEC_CHAN_WKSTA:
+               acb_info = ACB_WSTRUST;
+               break;
+       case SEC_CHAN_BDC:
+               acb_info = ACB_SVRTRUST;
+               break;
+#if 0
+       case SEC_CHAN_DOMAIN:
+               acb_info = ACB_DOMTRUST;
+               break;
+#endif
+       }
+
+       /* Make authenticated connection to remote machine */
 
        if (!(cli = net_make_ipc_connection(NET_FLAGS_PDC))) 
                return 1;
 
-       if (!(mem_ctx = talloc_init())) {
+       if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
                DEBUG(0, ("Could not initialise talloc context\n"));
                goto done;
        }
 
        /* Fetch domain sid */
 
-       if (!cli_nt_session_open(cli, PIPE_LSARPC)) {
-               DEBUG(0, ("Error connecting to SAM pipe\n"));
+       pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &result);
+       if (!pipe_hnd) {
+               DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
+                       nt_errstr(result) ));
                goto done;
        }
 
 
-       CHECK_RPC_ERR(cli_lsa_open_policy(cli, mem_ctx, True,
+       CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
                                          SEC_RIGHTS_MAXIMUM_ALLOWED,
                                          &lsa_pol),
                      "error opening lsa policy handle");
 
-       CHECK_RPC_ERR(cli_lsa_query_info_policy(cli, mem_ctx, &lsa_pol,
-                                               5, domain, &domain_sid),
+       CHECK_RPC_ERR(rpccli_lsa_query_info_policy(pipe_hnd, mem_ctx, &lsa_pol,
+                                               5, &domain, &domain_sid),
                      "error querying info policy");
 
-       cli_lsa_close(cli, mem_ctx, &lsa_pol);
+       rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
+       cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
 
-       cli_nt_session_close(cli); /* Done with this pipe */
+       /* Bail out if domain didn't get set. */
+       if (!domain) {
+               DEBUG(0, ("Could not get domain name.\n"));
+               goto done;
+       }
 
        /* Create domain user */
-       if (!cli_nt_session_open(cli, PIPE_SAMR)) {
-               DEBUG(0, ("Error connecting to SAM pipe\n"));
+       pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
+       if (!pipe_hnd) {
+               DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
+                       nt_errstr(result) ));
                goto done;
        }
 
-       CHECK_RPC_ERR(cli_samr_connect(cli, mem_ctx, 
+       CHECK_RPC_ERR(rpccli_samr_connect(pipe_hnd, mem_ctx, 
                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
                                       &sam_pol),
                      "could not connect to SAM database");
 
        
-       CHECK_RPC_ERR(cli_samr_open_domain(cli, mem_ctx, &sam_pol,
+       CHECK_RPC_ERR(rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
                                           SEC_RIGHTS_MAXIMUM_ALLOWED,
-                                          &domain_sid, &domain_pol),
+                                          domain_sid, &domain_pol),
                      "could not open domain");
 
        /* Create domain user */
-       fstrcpy(acct_name, global_myname);
-       fstrcat(acct_name, "$");
-       strlower(acct_name);
-
-        acb_info = (lp_server_role() == ROLE_DOMAIN_BDC) ? ACB_SVRTRUST : ACB_WSTRUST;
+       if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
+               result = NT_STATUS_NO_MEMORY;
+               goto done;
+       }
+       strlower_m(acct_name);
+       const_acct_name = acct_name;
 
-       result = cli_samr_create_dom_user(cli, mem_ctx, &domain_pol,
+       result = rpccli_samr_create_dom_user(pipe_hnd, mem_ctx, &domain_pol,
                                          acct_name, acb_info,
                                          0xe005000b, &user_pol, 
                                          &user_rid);
 
        if (!NT_STATUS_IS_OK(result) && 
            !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
-               d_printf("Create of workstation account failed\n");
+               d_fprintf(stderr, "Creation of workstation account failed\n");
 
                /* If NT_STATUS_ACCESS_DENIED then we have a valid
                   username/password combo but the user does not have
                   administrator access. */
 
                if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
-                       d_printf("User specified does not have administrator privileges\n");
+                       d_fprintf(stderr, "User specified does not have administrator privileges\n");
 
                goto done;
        }
 
        /* We *must* do this.... don't ask... */
 
-       if (NT_STATUS_IS_OK(result))
-               cli_samr_close(cli, mem_ctx, &user_pol);
-
-       names = (char *)&acct_name[0];
+       if (NT_STATUS_IS_OK(result)) {
+               rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
+       }
 
-       CHECK_RPC_ERR_DEBUG(cli_samr_lookup_names(cli, mem_ctx,
+       CHECK_RPC_ERR_DEBUG(rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
                                                  &domain_pol, flags,
-                                                 1, &names, &num_rids,
+                                                 1, &const_acct_name, 
+                                                 &num_rids,
                                                  &user_rids, &name_types),
                            ("error looking up rid for user %s: %s\n",
-                            acct_name, get_nt_error_msg(result)));
+                            acct_name, nt_errstr(result)));
 
        if (name_types[0] != SID_NAME_USER) {
-               DEBUG(0, ("%s is not a user account\n", acct_name));
+               DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types[0]));
                goto done;
        }
 
@@ -181,26 +272,22 @@ int net_rpc_join(int argc, const char **argv)
        /* Open handle on user */
 
        CHECK_RPC_ERR_DEBUG(
-               cli_samr_open_user(cli, mem_ctx, &domain_pol,
+               rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
                                   SEC_RIGHTS_MAXIMUM_ALLOWED,
                                   user_rid, &user_pol),
                ("could not re-open existing user %s: %s\n",
-                acct_name, get_nt_error_msg(result)));
+                acct_name, nt_errstr(result)));
        
        /* Create a random machine account password */
 
        { 
                char *str;
                str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
-               clear_trust_password = strdup(str);
+               clear_trust_password = SMB_STRDUP(str);
+               E_md4hash(clear_trust_password, md4_trust_password);
        }
 
-       ucs2_pw_len = push_ucs2(NULL, ucs2_trust_password, 
-                               clear_trust_password, 
-                               sizeof(ucs2_trust_password), 0);
-                 
-       encode_pw_buffer((char *)pwbuf, ucs2_trust_password,
-                        ucs2_pw_len);
+       encode_pw_buffer(pwbuf, clear_trust_password, STR_UNICODE);
 
        /* Set password on machine account */
 
@@ -212,14 +299,8 @@ int net_rpc_join(int argc, const char **argv)
        ctr.switch_value = 24;
        ctr.info.id24 = &p24;
 
-       /* I don't think this is quite the right place for this
-          calculation.  It should be moved somewhere where the credentials
-          are calculated. )-: */
-
-       mdfour(sess_key, cli->pwd.smb_nt_pwd, 16);
-
-       CHECK_RPC_ERR(cli_samr_set_userinfo(cli, mem_ctx, &user_pol, 24, 
-                                           sess_key, &ctr),
+       CHECK_RPC_ERR(rpccli_samr_set_userinfo(pipe_hnd, mem_ctx, &user_pol, 24, 
+                                           &cli->user_session_key, &ctr),
                      "error setting trust account password");
 
        /* Why do we have to try to (re-)set the ACB to be the same as what
@@ -232,65 +313,110 @@ int net_rpc_join(int argc, const char **argv)
           userinfo2 level 0x10 fails.  -tpot */
 
        ZERO_STRUCT(ctr);
-       ctr.switch_value = 0x10;
-       ctr.info.id10 = &p10;
+       ctr.switch_value = 16;
+       ctr.info.id16 = &p16;
 
-       init_sam_user_info10(&p10, acb_info);
+       init_sam_user_info16(&p16, acb_info);
 
        /* Ignoring the return value is necessary for joining a domain
           as a normal user with "Add workstation to domain" privilege. */
 
-       result = cli_samr_set_userinfo2(cli, mem_ctx, &user_pol, 0x10
-                                       sess_key, &ctr);
+       result = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16
+                                       &cli->user_session_key, &ctr);
 
-       /* Now store the secret in the secrets database */
+       rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
+       cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
 
-       strupper(domain);
+       /* Now check the whole process from top-to-bottom */
 
-       if (!secrets_store_domain_sid(domain, &domain_sid)) {
-               DEBUG(0, ("error storing domain sid for %s\n", domain));
+       pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, &result);
+       if (!pipe_hnd) {
+               DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
+                       nt_errstr(result) ));
                goto done;
        }
 
-       if (!secrets_store_machine_password(clear_trust_password)) {
-               DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
+       result = rpccli_netlogon_setup_creds(pipe_hnd,
+                                       cli->desthost, /* server name */
+                                       domain,        /* domain */
+                                       global_myname(), /* client name */
+                                       global_myname(), /* machine account name */
+                                        md4_trust_password,
+                                        sec_channel_type,
+                                        &neg_flags);
+
+       if (!NT_STATUS_IS_OK(result)) {
+               DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
+                         nt_errstr(result)));
+
+               if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
+                    (sec_channel_type == SEC_CHAN_BDC) ) {
+                       d_fprintf(stderr, "Please make sure that no computer account\n"
+                                "named like this machine (%s) exists in the domain\n",
+                                global_myname());
+               }
+
+               goto done;
        }
 
-       /* Now check the whole process from top-to-bottom */
+       /* We can only check the schannel connection if the client is allowed
+          to do this and the server supports it. If not, just assume success
+          (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
+          do the same again (setup creds) in net_rpc_join_ok(). JRA. */
+
+       if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
+               struct rpc_pipe_client *netlogon_schannel_pipe = 
+                                               cli_rpc_pipe_open_schannel_with_key(cli,
+                                                       PI_NETLOGON,
+                                                       PIPE_AUTH_LEVEL_PRIVACY,
+                                                       domain,
+                                                       pipe_hnd->dc,
+                                                       &result);
+
+               if (!NT_STATUS_IS_OK(result)) {
+                       DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
+                                 nt_errstr(result)));
+
+                       if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
+                            (sec_channel_type == SEC_CHAN_BDC) ) {
+                               d_fprintf(stderr, "Please make sure that no computer account\n"
+                                        "named like this machine (%s) exists in the domain\n",
+                                        global_myname());
+                       }
+
+                       goto done;
+               }
+               cli_rpc_pipe_close(netlogon_schannel_pipe);
+       }
+
+       cli_rpc_pipe_close(pipe_hnd);
 
-       cli_samr_close(cli, mem_ctx, &user_pol);
+       /* Now store the secret in the secrets database */
 
-       cli_nt_session_close(cli); /* Done with this pipe */
+       strupper_m(domain);
 
-       if (!cli_nt_session_open(cli, PIPE_NETLOGON)) {
-               DEBUG(0, ("Error connecting to NETLOGON pipe\n"));
+       if (!secrets_store_domain_sid(domain, domain_sid)) {
+               DEBUG(0, ("error storing domain sid for %s\n", domain));
                goto done;
        }
 
-       if (!secrets_fetch_trust_account_password(domain, 
-                                                 stored_md4_trust_password, NULL)) {
-               DEBUG(0, ("Could not reterive secrets we just stored!"));
-               goto done;
+       if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
+               DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
        }
-       
-       CHECK_RPC_ERR(new_cli_nt_setup_creds(cli, stored_md4_trust_password),
-                         "error in domain join verification");
-       
-       retval = 0;             /* Success! */
+
+       /* double-check, connection from scratch */
+       retval = net_rpc_join_ok(domain, cli->desthost, &cli->dest_ip);
        
 done:
-       /* Close down pipe - this will clean up open policy handles */
-
-       if (cli->nt_pipe_fnum)
-               cli_nt_session_close(cli);
 
        /* Display success or failure */
 
-       if (retval != 0) {
-               trust_password_delete(domain);
-               fprintf(stderr,"Unable to join domain %s.\n",domain);
-       } else {
-               printf("Joined domain %s.\n",domain);
+       if (domain) {
+               if (retval != 0) {
+                       fprintf(stderr,"Unable to join domain %s.\n",domain);
+               } else {
+                       printf("Joined domain %s.\n",domain);
+               }
        }
        
        cli_shutdown(cli);
@@ -299,3 +425,25 @@ done:
 
        return retval;
 }
+
+/**
+ * check that a join is OK
+ *
+ * @return A shell status integer (0 for success)
+ *
+ **/
+int net_rpc_testjoin(int argc, const char **argv) 
+{
+       char *domain = smb_xstrdup(opt_target_workgroup);
+
+       /* Display success or failure */
+       if (net_rpc_join_ok(domain, NULL, NULL) != 0) {
+               fprintf(stderr,"Join to domain '%s' is not valid\n",domain);
+               free(domain);
+               return -1;
+       }
+
+       printf("Join to '%s' is OK\n",domain);
+       free(domain);
+       return 0;
+}