s3-rpc_server read and write the unix_token and unix_info across named_pipe_auth
[amitay/samba.git] / source3 / rpc_server / rpc_ncacn_np.c
index ea65e042abfb6531a9866bba02a8410ea8f2a12d..f43d0b81bc4e433571f55e152c0e778f0f867ec8 100644 (file)
@@ -5,6 +5,7 @@
  *  Largely re-written : 2005
  *  Copyright (C) Jeremy Allison               1998 - 2005
  *  Copyright (C) Simo Sorce                   2010
+ *  Copyright (C) Andrew Bartlett              2011
  *
  *  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
  */
 
 #include "includes.h"
+#include "rpc_client/cli_pipe.h"
 #include "rpc_server/srv_pipe_internal.h"
 #include "rpc_dce.h"
 #include "../libcli/named_pipe_auth/npa_tstream.h"
 #include "rpc_server/rpc_ncacn_np.h"
 #include "librpc/gen_ndr/netlogon.h"
+#include "librpc/gen_ndr/auth.h"
+#include "../auth/auth_sam_reply.h"
+#include "auth.h"
+#include "ntdomain.h"
+#include "../lib/tsocket/tsocket.h"
+#include "../lib/util/tevent_ntstatus.h"
+#include "rpc_contexts.h"
 
 #undef DBGC_CLASS
 #define DBGC_CLASS DBGC_RPC_SRV
 
-static int pipes_open;
-
 static struct pipes_struct *InternalPipes;
 
 /* TODO
@@ -95,15 +102,13 @@ int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
                return False;
        }
 
-       if (p->auth.auth_data_free_func) {
-               (*p->auth.auth_data_free_func)(&p->auth);
-       }
-
-       free_pipe_rpc_context_internal( p->contexts );
+       TALLOC_FREE(p->auth.auth_ctx);
 
        /* Free the handles database. */
        close_policy_by_pipe(p);
 
+       free_pipe_rpc_context_internal( p->contexts );
+
        DLIST_REMOVE(InternalPipes, p);
 
        ZERO_STRUCTP(p);
@@ -117,16 +122,17 @@ int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
 
 struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
                                              const struct ndr_syntax_id *syntax,
-                                             struct client_address *client_id,
-                                             const struct auth_serversupplied_info *server_info,
+                                             const struct tsocket_address *remote_address,
+                                             const struct auth3_session_info *session_info,
                                              struct messaging_context *msg_ctx)
 {
        struct pipes_struct *p;
+       struct pipe_rpc_fns *context_fns;
 
        DEBUG(4,("Create pipe requested %s\n",
                 get_pipe_name_from_syntax(talloc_tos(), syntax)));
 
-       p = TALLOC_ZERO_P(mem_ctx, struct pipes_struct);
+       p = talloc_zero(mem_ctx, struct pipes_struct);
 
        if (!p) {
                DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
@@ -148,8 +154,8 @@ struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
                return NULL;
        }
 
-       p->server_info = copy_serverinfo(p, server_info);
-       if (p->server_info == NULL) {
+       p->session_info = copy_session_info(p, session_info);
+       if (p->session_info == NULL) {
                DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
                close_policy_by_pipe(p);
                TALLOC_FREE(p);
@@ -160,14 +166,32 @@ struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
 
        DLIST_ADD(InternalPipes, p);
 
-       p->client_id = client_id;
+       p->remote_address = tsocket_address_copy(remote_address, p);
+       if (p->remote_address == NULL) {
+               return false;
+       }
 
        p->endian = RPC_LITTLE_ENDIAN;
 
-       p->syntax = *syntax;
+       p->transport = NCALRPC;
+
+       context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
+       if (context_fns == NULL) {
+               DEBUG(0,("malloc() failed!\n"));
+               return False;
+       }
+
+       context_fns->next = context_fns->prev = NULL;
+       context_fns->n_cmds = rpc_srv_get_pipe_num_cmds(syntax);
+       context_fns->cmds = rpc_srv_get_pipe_cmds(syntax);
+       context_fns->context_id = 0;
+       context_fns->syntax = *syntax;
 
-       DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
-                get_pipe_name_from_syntax(talloc_tos(), syntax), pipes_open));
+       /* add to the list of open contexts */
+       DLIST_ADD(p->contexts, context_fns);
+
+       DEBUG(4,("Created internal pipe %s\n",
+                get_pipe_name_from_syntax(talloc_tos(), syntax)));
 
        talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
 
@@ -180,8 +204,9 @@ static NTSTATUS rpcint_dispatch(struct pipes_struct *p,
                                const DATA_BLOB *in_data,
                                DATA_BLOB *out_data)
 {
-       uint32_t num_cmds = rpc_srv_get_pipe_num_cmds(&p->syntax);
-       const struct api_struct *cmds = rpc_srv_get_pipe_cmds(&p->syntax);
+       struct pipe_rpc_fns *fns = find_pipe_fns_by_context(p->contexts, 0);
+       uint32_t num_cmds = fns->n_cmds;
+       const struct api_struct *cmds = fns->cmds;
        uint32_t i;
        bool ok;
 
@@ -396,7 +421,7 @@ static void rpcint_bh_do_ndr_print(struct dcerpc_binding_handle *h,
 {
        void *struct_ptr = discard_const(_struct_ptr);
 
-       if (DEBUGLEVEL < 10) {
+       if (DEBUGLEVEL < 11) {
                return;
        }
 
@@ -430,8 +455,8 @@ static const struct dcerpc_binding_handle_ops rpcint_bh_ops = {
 static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
                        const struct ndr_syntax_id *abstract_syntax,
                        const struct ndr_interface_table *ndr_table,
-                       struct client_address *client_id,
-                       const struct auth_serversupplied_info *server_info,
+                       const struct tsocket_address *remote_address,
+                       const struct auth3_session_info *session_info,
                        struct messaging_context *msg_ctx,
                        struct dcerpc_binding_handle **binding_handle)
 {
@@ -454,8 +479,8 @@ static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
        }
        hs->p = make_internal_rpc_pipe_p(hs,
                                         abstract_syntax,
-                                        client_id,
-                                        server_info,
+                                        remote_address,
+                                        session_info,
                                         msg_ctx);
        if (hs->p == NULL) {
                TALLOC_FREE(h);
@@ -472,7 +497,7 @@ static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
  *
  * @param[in]  ndr_table Normally the ndr_table_<name>.
  *
- * @param[in]  client_id The info about the connected client.
+ * @param[in]  remote_address The info about the connected client.
  *
  * @param[in]  serversupplied_info The server supplied authentication function.
  *
@@ -490,63 +515,59 @@ static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
  *
  *   status = rpcint_binding_handle(tmp_ctx,
  *                                  &ndr_table_winreg,
- *                                  p->client_id,
- *                                  p->server_info,
+ *                                  p->remote_address,
+ *                                  p->session_info,
  *                                  p->msg_ctx
  *                                  &winreg_binding);
  * @endcode
  */
 NTSTATUS rpcint_binding_handle(TALLOC_CTX *mem_ctx,
                               const struct ndr_interface_table *ndr_table,
-                              struct client_address *client_id,
-                              const struct auth_serversupplied_info *server_info,
+                              const struct tsocket_address *remote_address,
+                              const struct auth3_session_info *session_info,
                               struct messaging_context *msg_ctx,
                               struct dcerpc_binding_handle **binding_handle)
 {
-       return rpcint_binding_handle_ex(mem_ctx, NULL, ndr_table, client_id,
-                                       server_info, msg_ctx, binding_handle);
+       return rpcint_binding_handle_ex(mem_ctx, NULL, ndr_table, remote_address,
+                                       session_info, msg_ctx, binding_handle);
 }
 
 /**
- * @brief Create a new RPC client context which uses a local dispatch function.
+ * @internal
+ *
+ * @brief Create a new RPC client context which uses a local transport.
+ *
+ * This creates a local transport. It is a shortcut to directly call the server
+ * functions and avoid marshalling.
+ * NOTE: this function should be used only by rpc_pipe_open_interface()
  *
  * @param[in]  mem_ctx  The memory context to use.
  *
  * @param[in]  abstract_syntax Normally the syntax_id of the autogenerated
  *                             ndr_table_<name>.
  *
- * @param[in]  dispatch The corresponding autogenerated dispatch function
- *                      rpc_<name>_dispatch.
- *
  * @param[in]  serversupplied_info The server supplied authentication function.
  *
+ * @param[in]  remote_address The client address information.
+ *
+ * @param[in]  msg_ctx  The messaging context to use.
+ *
  * @param[out] presult  A pointer to store the connected rpc client pipe.
  *
  * @return              NT_STATUS_OK on success, a corresponding NT status if an
  *                      error occured.
- *
- * @code
- *   struct rpc_pipe_client *winreg_pipe;
- *   NTSTATUS status;
- *
- *   status = rpc_pipe_open_internal(tmp_ctx,
- *                                   &ndr_table_winreg.syntax_id,
- *                                   rpc_winreg_dispatch,
- *                                   p->server_info,
- *                                   &winreg_pipe);
- * @endcode
  */
-NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
+static NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
                                const struct ndr_syntax_id *abstract_syntax,
-                               struct auth_serversupplied_info *serversupplied_info,
-                               struct client_address *client_id,
+                               const struct auth3_session_info *session_info,
+                               const struct tsocket_address *remote_address,
                                struct messaging_context *msg_ctx,
                                struct rpc_pipe_client **presult)
 {
        struct rpc_pipe_client *result;
        NTSTATUS status;
 
-       result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
+       result = talloc_zero(mem_ctx, struct rpc_pipe_client);
        if (result == NULL) {
                return NT_STATUS_NO_MEMORY;
        }
@@ -554,11 +575,21 @@ NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
        result->abstract_syntax = *abstract_syntax;
        result->transfer_syntax = ndr_transfer_syntax;
 
-       if (client_id == NULL) {
-               static struct client_address unknown;
-               strlcpy(unknown.addr, "<UNKNOWN>", sizeof(unknown.addr));
-               unknown.name = "<UNKNOWN>";
-               client_id = &unknown;
+       if (remote_address == NULL) {
+               struct tsocket_address *local;
+               int rc;
+
+               rc = tsocket_address_inet_from_strings(mem_ctx,
+                                                      "ip",
+                                                      "127.0.0.1",
+                                                      0,
+                                                      &local);
+               if (rc < 0) {
+                       TALLOC_FREE(result);
+                       return NT_STATUS_NO_MEMORY;
+               }
+
+               remote_address = local;
        }
 
        result->max_xmit_frag = -1;
@@ -567,8 +598,8 @@ NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
        status = rpcint_binding_handle_ex(result,
                                          abstract_syntax,
                                          NULL,
-                                         client_id,
-                                         serversupplied_info,
+                                         remote_address,
+                                         session_info,
                                          msg_ctx,
                                          &result->binding_handle);
        if (!NT_STATUS_IS_OK(status)) {
@@ -589,14 +620,17 @@ struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
                                const char *pipe_name,
                                const struct tsocket_address *local_address,
                                const struct tsocket_address *remote_address,
-                               struct auth_serversupplied_info *server_info)
+                               const struct auth3_session_info *session_info)
 {
        struct np_proxy_state *result;
        char *socket_np_dir;
        const char *socket_dir;
        struct tevent_context *ev;
        struct tevent_req *subreq;
-       struct netr_SamInfo3 *info3;
+       struct auth_session_info_transport *session_info_t;
+       struct auth_session_info *session_info_npa;
+       struct auth_user_info_dc *user_info_dc;
+       union netr_Validation val;
        NTSTATUS status;
        bool ok;
        int ret;
@@ -639,20 +673,41 @@ struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
                goto fail;
        }
 
-       info3 = talloc_zero(talloc_tos(), struct netr_SamInfo3);
-       if (info3 == NULL) {
+       session_info_npa = talloc_zero(talloc_tos(), struct auth_session_info);
+       if (session_info_npa == NULL) {
                DEBUG(0, ("talloc failed\n"));
                goto fail;
        }
 
-       status = serverinfo_to_SamInfo3(server_info, NULL, 0, info3);
+       /* Send the named_pipe_auth server the user's full token */
+       session_info_npa->security_token = session_info->security_token;
+       session_info_npa->session_key = session_info->session_key;
+       session_info_npa->unix_token = session_info->unix_token;
+       session_info_npa->unix_info = session_info->unix_info;
+
+       val.sam3 = session_info->info3;
+
+       /* Convert into something we can build a struct
+        * auth_session_info from.  Most of the work here
+        * will be to convert the SIDS, which we will then ignore, but
+        * this is the easier way to handle it */
+       status = make_user_info_dc_netlogon_validation(talloc_tos(), "", 3, &val, &user_info_dc);
        if (!NT_STATUS_IS_OK(status)) {
-               TALLOC_FREE(info3);
-               DEBUG(0, ("serverinfo_to_SamInfo3 failed: %s\n",
-                         nt_errstr(status)));
+               DEBUG(0, ("conversion of info3 into user_info_dc failed!\n"));
                goto fail;
        }
 
+       session_info_npa->info = talloc_move(session_info_npa, &user_info_dc->info);
+       talloc_free(user_info_dc);
+
+       session_info_t = talloc_zero(talloc_tos(), struct auth_session_info_transport);
+       if (session_info_npa == NULL) {
+               DEBUG(0, ("talloc failed\n"));
+               goto fail;
+       }
+
+       session_info_t->session_info = talloc_steal(session_info_t, session_info_npa);
+
        become_root();
        subreq = tstream_npa_connect_send(talloc_tos(), ev,
                                          socket_np_dir,
@@ -661,15 +716,13 @@ struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
                                          NULL, /* client_name */
                                          local_address, /* server_addr */
                                          NULL, /* server_name */
-                                         info3,
-                                         server_info->user_session_key,
-                                         data_blob_null /* delegated_creds */);
+                                         session_info_t);
        if (subreq == NULL) {
                unbecome_root();
                DEBUG(0, ("tstream_npa_connect_send to %s for pipe %s and "
                          "user %s\\%s failed\n",
-                         socket_np_dir, pipe_name, info3->base.domain.string,
-                         info3->base.account_name.string));
+                         socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
+                         session_info_t->session_info->info->account_name));
                goto fail;
        }
        ok = tevent_req_poll(subreq, ev);
@@ -677,8 +730,8 @@ struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
        if (!ok) {
                DEBUG(0, ("tevent_req_poll to %s for pipe %s and user %s\\%s "
                          "failed for tstream_npa_connect: %s\n",
-                         socket_np_dir, pipe_name, info3->base.domain.string,
-                         info3->base.account_name.string,
+                         socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
+                         session_info_t->session_info->info->account_name,
                          strerror(errno)));
                goto fail;
 
@@ -693,8 +746,8 @@ struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
        if (ret != 0) {
                DEBUG(0, ("tstream_npa_connect_recv  to %s for pipe %s and "
                          "user %s\\%s failed: %s\n",
-                         socket_np_dir, pipe_name, info3->base.domain.string,
-                         info3->base.account_name.string,
+                         socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
+                         session_info_t->session_info->info->account_name,
                          strerror(sys_errno)));
                goto fail;
        }
@@ -709,7 +762,7 @@ struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
 static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
                                const char *pipe_name,
                                const struct ndr_syntax_id *abstract_syntax,
-                               struct auth_serversupplied_info *server_info,
+                               const struct auth3_session_info *session_info,
                                struct rpc_pipe_client **_result)
 {
        struct tsocket_address *local, *remote;
@@ -732,7 +785,7 @@ static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
        }
 
        proxy_state = make_external_rpc_pipe_p(mem_ctx, pipe_name,
-                                               local, remote, server_info);
+                                               local, remote, session_info);
        if (!proxy_state) {
                return NT_STATUS_UNSUCCESSFUL;
        }
@@ -758,14 +811,19 @@ static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
        result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
 
        status = rpc_transport_tstream_init(result,
-                                           proxy_state->npipe,
-                                           proxy_state->read_queue,
-                                           proxy_state->write_queue,
+                                           &proxy_state->npipe,
                                            &result->transport);
        if (!NT_STATUS_IS_OK(status)) {
                goto done;
        }
 
+       result->binding_handle = rpccli_bh_create(result);
+       if (result->binding_handle == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               DEBUG(0, ("Failed to create binding handle.\n"));
+               goto done;
+       }
+
        result->auth = talloc_zero(result, struct pipe_auth_data);
        if (!result->auth) {
                status = NT_STATUS_NO_MEMORY;
@@ -782,9 +840,10 @@ static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
 
        status = rpc_pipe_bind(result, auth);
        if (!NT_STATUS_IS_OK(status)) {
-               DEBUG(0, ("Failed to bind spoolss pipe.\n"));
+               DEBUG(0, ("Failed to bind external pipe.\n"));
                goto done;
        }
+
 done:
        if (!NT_STATUS_IS_OK(status)) {
                TALLOC_FREE(result);
@@ -795,23 +854,42 @@ done:
 }
 
 /**
- * @brief Create a new RPC client context which uses a local dispatch function.
+ * @brief Create a new RPC client context which uses a local dispatch function
+ *       or a remote transport, depending on rpc_server configuration for the
+ *       specific service.
+ *
+ * @param[in]  mem_ctx  The memory context to use.
+ *
+ * @param[in]  abstract_syntax Normally the syntax_id of the autogenerated
+ *                             ndr_table_<name>.
+ *
+ * @param[in]  serversupplied_info The server supplied authentication function.
+ *
+ * @param[in]  remote_address The client address information.
+ *
+ * @param[in]  msg_ctx  The messaging context to use.
  *
- * @param mem_ctx      The memory context on which thje pipe will ultimately
- *                     be allocated
- * @param name         The pipe name to connect to.
- * @param server_info  Credentials to use for the connection.
- * @param pipe         [in|out] Checks if a pipe is connected, and connects it
- *                              if not
+ * @param[out] presult  A pointer to store the connected rpc client pipe.
  *
- * @return              NT_STATUS_OK on success, a corresponding NT status if
- *                     an error occured.
+ * @return              NT_STATUS_OK on success, a corresponding NT status if an
+ *                      error occured.
+ *
+ * @code
+ *   struct rpc_pipe_client *winreg_pipe;
+ *   NTSTATUS status;
+ *
+ *   status = rpc_pipe_open_interface(tmp_ctx,
+ *                                    &ndr_table_winreg.syntax_id,
+ *                                    p->session_info,
+ *                                    remote_address,
+ *                                    &winreg_pipe);
+ * @endcode
  */
 
 NTSTATUS rpc_pipe_open_interface(TALLOC_CTX *mem_ctx,
                                 const struct ndr_syntax_id *syntax,
-                                struct auth_serversupplied_info *server_info,
-                                struct client_address *client_id,
+                                const struct auth3_session_info *session_info,
+                                const struct tsocket_address *remote_address,
                                 struct messaging_context *msg_ctx,
                                 struct rpc_pipe_client **cli_pipe)
 {
@@ -838,32 +916,43 @@ NTSTATUS rpc_pipe_open_interface(TALLOC_CTX *mem_ctx,
                goto done;
        }
 
-       DEBUG(10, ("Connecting to %s pipe.\n", pipe_name));
+       while (pipe_name[0] == '\\') {
+               pipe_name++;
+       }
+
+       DEBUG(5, ("Connecting to %s pipe.\n", pipe_name));
 
        server_type = lp_parm_const_string(GLOBAL_SECTION_SNUM,
                                           "rpc_server", pipe_name,
                                           "embedded");
-       if (StrCaseCmp(server_type, "embedded") == 0) {
+
+       if (strcasecmp_m(server_type, "embedded") == 0) {
                status = rpc_pipe_open_internal(tmp_ctx,
-                                               syntax, server_info,
-                                               client_id, msg_ctx,
+                                               syntax, session_info,
+                                               remote_address, msg_ctx,
                                                &cli);
                if (!NT_STATUS_IS_OK(status)) {
                        goto done;
                }
-       } else {
+       } else if (strcasecmp_m(server_type, "daemon") == 0 ||
+                  strcasecmp_m(server_type, "external") == 0) {
                /* It would be nice to just use rpc_pipe_open_ncalrpc() but
                 * for now we need to use the special proxy setup to connect
                 * to spoolssd. */
 
                status = rpc_pipe_open_external(tmp_ctx,
                                                pipe_name, syntax,
-                                               server_info,
+                                               session_info,
                                                &cli);
                if (!NT_STATUS_IS_OK(status)) {
                        goto done;
                }
-       }
+       } else {
+               status = NT_STATUS_NOT_IMPLEMENTED;
+               DEBUG(0, ("Wrong servertype specified in config file: %s",
+                         nt_errstr(status)));
+               goto done;
+        }
 
        status = NT_STATUS_OK;
 done: