lib: modules: Change XXX_init interface from XXX_init(void) to XXX_init(TALLOC_CTX *)
[gd/samba-autobuild/.git] / source3 / auth / auth_domain.c
index 0fc6410fec3e70d5df698a7ef8cab37087a2681c..40d717d91a9bed5c4bd00814d987b47765b9d213 100644 (file)
 */
 
 #include "includes.h"
+#include "auth.h"
 #include "../libcli/auth/libcli_auth.h"
 #include "../librpc/gen_ndr/ndr_netlogon.h"
+#include "rpc_client/cli_pipe.h"
 #include "rpc_client/cli_netlogon.h"
 #include "secrets.h"
+#include "passdb.h"
+#include "libsmb/libsmb.h"
+#include "libcli/auth/netlogon_creds_cli.h"
+#include "libsmb/samlogon_cache.h"
 
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_AUTH
 
-extern bool global_machine_password_needs_changing;
 static struct named_mutex *mutex;
 
-/*
- * Change machine password (called from main loop
- * idle timeout. Must be done as root.
- */
-
-void attempt_machine_password_change(void)
-{
-       unsigned char trust_passwd_hash[16];
-       time_t lct;
-       void *lock;
-
-       if (!global_machine_password_needs_changing) {
-               return;
-       }
-
-       if (lp_security() != SEC_DOMAIN) {
-               return;
-       }
-
-       /*
-        * We're in domain level security, and the code that
-        * read the machine password flagged that the machine
-        * password needs changing.
-        */
-
-       /*
-        * First, open the machine password file with an exclusive lock.
-        */
-
-       lock = secrets_get_trust_account_lock(NULL, lp_workgroup());
-
-       if (lock == NULL) {
-               DEBUG(0,("attempt_machine_password_change: unable to lock "
-                       "the machine account password for machine %s in "
-                       "domain %s.\n",
-                       global_myname(), lp_workgroup() ));
-               return;
-       }
-
-       if(!secrets_fetch_trust_account_password(lp_workgroup(),
-                       trust_passwd_hash, &lct, NULL)) {
-               DEBUG(0,("attempt_machine_password_change: unable to read the "
-                       "machine account password for %s in domain %s.\n",
-                       global_myname(), lp_workgroup()));
-               TALLOC_FREE(lock);
-               return;
-       }
-
-       /*
-        * Make sure someone else hasn't already done this.
-        */
-
-       if(time(NULL) < lct + lp_machine_password_timeout()) {
-               global_machine_password_needs_changing = false;
-               TALLOC_FREE(lock);
-               return;
-       }
-
-       /* always just contact the PDC here */
-
-       change_trust_account_password( lp_workgroup(), NULL);
-       global_machine_password_needs_changing = false;
-       TALLOC_FREE(lock);
-}
-
 /**
  * Connect to a remote server for (inter)domain security authenticaion.
  *
@@ -109,19 +49,24 @@ void attempt_machine_password_change(void)
  *
  **/
 
-static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
+static NTSTATUS connect_to_domain_password_server(struct cli_state **cli_ret,
                                                const char *domain,
                                                const char *dc_name,
-                                               struct sockaddr_storage *dc_ss, 
+                                               const struct sockaddr_storage *dc_ss,
                                                struct rpc_pipe_client **pipe_ret,
-                                               bool *retry)
+                                               TALLOC_CTX *mem_ctx,
+                                               struct netlogon_creds_cli_context **creds_ret)
 {
-        NTSTATUS result;
+       TALLOC_CTX *frame = talloc_stackframe();
+       struct messaging_context *msg_ctx = server_messaging_context();
+       NTSTATUS result;
+       struct cli_state *cli = NULL;
        struct rpc_pipe_client *netlogon_pipe = NULL;
+       struct netlogon_creds_cli_context *netlogon_creds = NULL;
 
-       *cli = NULL;
-
+       *cli_ret = NULL;
        *pipe_ret = NULL;
+       *creds_ret = NULL;
 
        /* TODO: Send a SAMLOGON request to determine whether this is a valid
           logonserver.  We can avoid a 30-second timeout if the DC is down
@@ -139,13 +84,13 @@ static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
 
        mutex = grab_named_mutex(NULL, dc_name, 10);
        if (mutex == NULL) {
+               TALLOC_FREE(frame);
                return NT_STATUS_NO_LOGON_SERVERS;
        }
 
        /* Attempt connection */
-       *retry = True;
-       result = cli_full_connection(cli, global_myname(), dc_name, dc_ss, 0, 
-               "IPC$", "IPC", "", "", "", 0, Undefined, retry);
+       result = cli_full_connection(&cli, lp_netbios_name(), dc_name, dc_ss, 0,
+               "IPC$", "IPC", "", "", "", 0, SMB_SIGNING_IPC_DEFAULT);
 
        if (!NT_STATUS_IS_OK(result)) {
                /* map to something more useful */
@@ -153,12 +98,8 @@ static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
                        result = NT_STATUS_NO_LOGON_SERVERS;
                }
 
-               if (*cli) {
-                       cli_shutdown(*cli);
-                       *cli = NULL;
-               }
-
                TALLOC_FREE(mutex);
+               TALLOC_FREE(frame);
                return result;
        }
 
@@ -166,84 +107,32 @@ static NTSTATUS connect_to_domain_password_server(struct cli_state **cli,
         * We now have an anonymous connection to IPC$ on the domain password server.
         */
 
-       /*
-        * Even if the connect succeeds we need to setup the netlogon
-        * pipe here. We do this as we may just have changed the domain
-        * account password on the PDC and yet we may be talking to
-        * a BDC that doesn't have this replicated yet. In this case
-        * a successful connect to a DC needs to take the netlogon connect
-        * into account also. This patch from "Bjart Kvarme" <bjart.kvarme@usit.uio.no>.
-        */
-
-       /* open the netlogon pipe. */
-       if (lp_client_schannel()) {
-               /* We also setup the creds chain in the open_schannel call. */
-               result = cli_rpc_pipe_open_schannel(
-                       *cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
-                       DCERPC_AUTH_LEVEL_PRIVACY, domain, &netlogon_pipe);
-       } else {
-               result = cli_rpc_pipe_open_noauth(
-                       *cli, &ndr_table_netlogon.syntax_id, &netlogon_pipe);
-       }
-
+       result = cli_rpc_pipe_open_schannel(cli,
+                                           msg_ctx,
+                                           &ndr_table_netlogon,
+                                           NCACN_NP,
+                                           domain,
+                                           &netlogon_pipe,
+                                           frame,
+                                           &netlogon_creds);
        if (!NT_STATUS_IS_OK(result)) {
-               DEBUG(0,("connect_to_domain_password_server: unable to open the domain client session to \
-machine %s. Error was : %s.\n", dc_name, nt_errstr(result)));
-               cli_shutdown(*cli);
-               *cli = NULL;
-               TALLOC_FREE(mutex);
-               return result;
-       }
-
-       if (!lp_client_schannel()) {
-               /* We need to set up a creds chain on an unauthenticated netlogon pipe. */
-               uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
-               enum netr_SchannelType sec_chan_type = 0;
-               unsigned char machine_pwd[16];
-               const char *account_name;
-
-               if (!get_trust_pw_hash(domain, machine_pwd, &account_name,
-                                      &sec_chan_type))
-               {
-                       DEBUG(0, ("connect_to_domain_password_server: could not fetch "
-                       "trust account password for domain '%s'\n",
-                               domain));
-                       cli_shutdown(*cli);
-                       *cli = NULL;
-                       TALLOC_FREE(mutex);
-                       return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
-               }
-
-               result = rpccli_netlogon_setup_creds(netlogon_pipe,
-                                       dc_name, /* server name */
-                                       domain, /* domain */
-                                       global_myname(), /* client name */
-                                       account_name, /* machine account name */
-                                       machine_pwd,
-                                       sec_chan_type,
-                                       &neg_flags);
-
-               if (!NT_STATUS_IS_OK(result)) {
-                       cli_shutdown(*cli);
-                       *cli = NULL;
-                       TALLOC_FREE(mutex);
-                       return result;
-               }
-       }
-
-       if(!netlogon_pipe) {
-               DEBUG(0,("connect_to_domain_password_server: unable to open the domain client session to \
-machine %s. Error was : %s.\n", dc_name, cli_errstr(*cli)));
-               cli_shutdown(*cli);
-               *cli = NULL;
+               DEBUG(0,("connect_to_domain_password_server: "
+                        "unable to open the domain client session to "
+                        "machine %s. Error was : %s.\n",
+                        dc_name, nt_errstr(result)));
+               cli_shutdown(cli);
                TALLOC_FREE(mutex);
+               TALLOC_FREE(frame);
                return NT_STATUS_NO_LOGON_SERVERS;
        }
 
        /* We exit here with the mutex *locked*. JRA */
 
+       *cli_ret = cli;
        *pipe_ret = netlogon_pipe;
+       *creds_ret = talloc_move(mem_ctx, &netlogon_creds);
 
+       TALLOC_FREE(frame);
        return NT_STATUS_OK;
 }
 
@@ -259,15 +148,18 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
                                        uchar chal[8],
                                        struct auth_serversupplied_info **server_info,
                                        const char *dc_name,
-                                       struct sockaddr_storage *dc_ss)
+                                       const struct sockaddr_storage *dc_ss)
 
 {
+       TALLOC_CTX *frame = talloc_stackframe();
        struct netr_SamInfo3 *info3 = NULL;
        struct cli_state *cli = NULL;
        struct rpc_pipe_client *netlogon_pipe = NULL;
+       struct netlogon_creds_cli_context *netlogon_creds = NULL;
        NTSTATUS nt_status = NT_STATUS_NO_LOGON_SERVERS;
        int i;
-       bool retry = True;
+       uint8_t authoritative = 0;
+       uint32_t flags = 0;
 
        /*
         * At this point, smb_apasswd points to the lanman response to
@@ -279,17 +171,19 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
 
        /* rety loop for robustness */
 
-       for (i = 0; !NT_STATUS_IS_OK(nt_status) && retry && (i < 3); i++) {
+       for (i = 0; !NT_STATUS_IS_OK(nt_status) && (i < 3); i++) {
                nt_status = connect_to_domain_password_server(&cli,
                                                        domain,
                                                        dc_name,
                                                        dc_ss,
                                                        &netlogon_pipe,
-                                                       &retry);
+                                                       frame,
+                                                       &netlogon_creds);
        }
 
        if ( !NT_STATUS_IS_OK(nt_status) ) {
                DEBUG(0,("domain_client_validate: Domain password server not available.\n"));
+               TALLOC_FREE(frame);
                if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
                        return NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
                }
@@ -298,24 +192,26 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
 
        /* store a successful connection */
 
-       saf_store( domain, cli->desthost );
+       saf_store(domain, dc_name);
 
         /*
          * If this call succeeds, we now have lots of info about the user
          * in the info3 structure.  
          */
 
-       nt_status = rpccli_netlogon_sam_network_logon(netlogon_pipe,
-                                                     mem_ctx,
-                                                     user_info->logon_parameters,/* flags such as 'allow workstation logon' */ 
-                                                     dc_name,                    /* server name */
-                                                     user_info->client.account_name,        /* user name logging on. */
-                                                     user_info->client.domain_name,   /* domain name */
-                                                     user_info->workstation_name,/* workstation name */
-                                                     chal,                       /* 8 byte challenge. */
-                                                     user_info->lm_resp,         /* lanman 24 byte response */
-                                                     user_info->nt_resp,         /* nt 24 byte response */
-                                                     &info3);                    /* info3 out */
+       nt_status = rpccli_netlogon_network_logon(netlogon_creds,
+                                                 netlogon_pipe->binding_handle,
+                                                 mem_ctx,
+                                                 user_info->logon_parameters,         /* flags such as 'allow workstation logon' */
+                                                 user_info->client.account_name,      /* user name logging on. */
+                                                 user_info->client.domain_name,       /* domain name */
+                                                 user_info->workstation_name,         /* workstation name */
+                                                 chal,                                /* 8 byte challenge. */
+                                                 user_info->password.response.lanman, /* lanman 24 byte response */
+                                                 user_info->password.response.nt,     /* nt 24 byte response */
+                                                 &authoritative,
+                                                 &flags,
+                                                 &info3);                             /* info3 out */
 
        /* Let go as soon as possible so we avoid any potential deadlocks
           with winbind lookup up users or groups. */
@@ -333,31 +229,22 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
                if (NT_STATUS_EQUAL(nt_status, NT_STATUS_UNSUCCESSFUL)) {
                        nt_status = NT_STATUS_NO_LOGON_SERVERS;
                }
+               if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER) &&
+                   (authoritative == 0)) {
+                       nt_status = NT_STATUS_NOT_IMPLEMENTED;
+               }
        } else {
                nt_status = make_server_info_info3(mem_ctx,
-                                               user_info->client.account_name,
-                                               domain,
-                                               server_info,
-                                               info3);
+                                                  user_info->client.account_name,
+                                                  domain,
+                                                  server_info,
+                                                  info3);
 
                if (NT_STATUS_IS_OK(nt_status)) {
                        (*server_info)->nss_token |= user_info->was_mapped;
-
-                       if ( ! (*server_info)->guest) {
-                               /* if a real user check pam account restrictions */
-                               /* only really perfomed if "obey pam restriction" is true */
-                               nt_status = smb_pam_accountcheck((*server_info)->unix_name);
-                               if (  !NT_STATUS_IS_OK(nt_status)) {
-                                       DEBUG(1, ("PAM account restriction prevents user login\n"));
-                                       cli_shutdown(cli);
-                                       TALLOC_FREE(info3);
-                                       return nt_status;
-                               }
-                       }
+                       netsamlogon_cache_store(user_info->client.account_name, info3);
+                       TALLOC_FREE(info3);
                }
-
-               netsamlogon_cache_store(user_info->client.account_name, info3);
-               TALLOC_FREE(info3);
        }
 
        /* Note - once the cli stream is shutdown the mem_ctx used
@@ -365,6 +252,7 @@ static NTSTATUS domain_client_validate(TALLOC_CTX *mem_ctx,
           these pointers are no longer valid..... */
 
        cli_shutdown(cli);
+       TALLOC_FREE(frame);
        return nt_status;
 }
 
@@ -431,7 +319,7 @@ static NTSTATUS auth_init_ntdomain(struct auth_context *auth_context, const char
 {
        struct auth_methods *result;
 
-       result = TALLOC_ZERO_P(auth_context, struct auth_methods);
+       result = talloc_zero(auth_context, struct auth_methods);
        if (result == NULL) {
                return NT_STATUS_NO_MEMORY;
        }
@@ -454,8 +342,6 @@ static NTSTATUS check_trustdomain_security(const struct auth_context *auth_conte
                                           struct auth_serversupplied_info **server_info)
 {
        NTSTATUS nt_status = NT_STATUS_LOGON_FAILURE;
-       unsigned char trust_md4_password[16];
-       char *trust_password;
        fstring dc_name;
        struct sockaddr_storage dc_ss;
 
@@ -484,34 +370,6 @@ static NTSTATUS check_trustdomain_security(const struct auth_context *auth_conte
        if ( !is_trusted_domain( user_info->mapped.domain_name ) )
                return NT_STATUS_NOT_IMPLEMENTED;
 
-       /*
-        * Get the trusted account password for the trusted domain
-        * No need to become_root() as secrets_init() is done at startup.
-        */
-
-       if (!pdb_get_trusteddom_pw(user_info->mapped.domain_name, &trust_password,
-                                  NULL, NULL)) {
-               DEBUG(0, ("check_trustdomain_security: could not fetch trust "
-                         "account password for domain %s\n",
-                         user_info->mapped.domain_name));
-               return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
-       }
-
-#ifdef DEBUG_PASSWORD
-       DEBUG(100, ("Trust password for domain %s is %s\n", user_info->mapped.domain_name,
-                   trust_password));
-#endif
-       E_md4hash(trust_password, trust_md4_password);
-       SAFE_FREE(trust_password);
-
-#if 0
-       /* Test if machine password is expired and need to be changed */
-       if (time(NULL) > last_change_time + (time_t)lp_machine_password_timeout())
-       {
-               global_machine_password_needs_changing = True;
-       }
-#endif
-
        /* use get_dc_name() for consistency even through we know that it will be 
           a netbios name */
 
@@ -522,12 +380,12 @@ static NTSTATUS check_trustdomain_security(const struct auth_context *auth_conte
        }
 
        nt_status = domain_client_validate(mem_ctx,
-                                       user_info,
-                                       user_info->mapped.domain_name,
-                                       (uchar *)auth_context->challenge.data,
-                                       server_info,
-                                       dc_name,
-                                       &dc_ss);
+                                          user_info,
+                                          user_info->mapped.domain_name,
+                                          (uchar *)auth_context->challenge.data,
+                                          server_info,
+                                          dc_name,
+                                          &dc_ss);
 
        return nt_status;
 }
@@ -537,7 +395,7 @@ static NTSTATUS auth_init_trustdomain(struct auth_context *auth_context, const c
 {
        struct auth_methods *result;
 
-       result = TALLOC_ZERO_P(auth_context, struct auth_methods);
+       result = talloc_zero(auth_context, struct auth_methods);
        if (result == NULL) {
                return NT_STATUS_NO_MEMORY;
        }
@@ -548,7 +406,7 @@ static NTSTATUS auth_init_trustdomain(struct auth_context *auth_context, const c
        return NT_STATUS_OK;
 }
 
-NTSTATUS auth_domain_init(void) 
+NTSTATUS auth_domain_init(TALLOC_CTX *mem_ctx)
 {
        smb_register_auth(AUTH_INTERFACE_VERSION, "trustdomain", auth_init_trustdomain);
        smb_register_auth(AUTH_INTERFACE_VERSION, "ntdomain", auth_init_ntdomain);