From 64df4c7c5726ec266628fff40071e06d268b410e Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Fri, 25 May 2007 08:04:39 +0000 Subject: r23133: I felt pity on Kai, as he starts work on winbind in Samba4, so I decided to clean it up a little. We now use SPNEGO for authentication if possible, and common routines shared with the rest of the librpc codebase. Rather than make a connection to IPC$, then connect the pipes to it, we instead have the lsa and samr pipes as 'secondary connections'. Andrew Bartlett (This used to be commit 86654056b22245a57396544d572de6401069b9e5) --- source4/winbind/wb_connect_lsa.c | 246 ++------------------------------------- 1 file changed, 12 insertions(+), 234 deletions(-) (limited to 'source4/winbind/wb_connect_lsa.c') diff --git a/source4/winbind/wb_connect_lsa.c b/source4/winbind/wb_connect_lsa.c index 219865b78c..b8b4fa8e4d 100644 --- a/source4/winbind/wb_connect_lsa.c +++ b/source4/winbind/wb_connect_lsa.c @@ -5,7 +5,8 @@ credentials. Try ntlmssp, schannel and anon in that order. Copyright (C) Volker Lendecke 2005 - + Copyright (C) Andrew Bartlett 2007 + 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 @@ -26,6 +27,7 @@ #include "libcli/raw/libcliraw.h" #include "librpc/gen_ndr/ndr_lsa_c.h" +#include "winbind/wb_server.h" /* Helper to initialize LSA with a specific auth methods. Verify by opening * the LSA policy. */ @@ -43,19 +45,15 @@ struct init_lsa_state { }; static void init_lsa_recv_pipe(struct composite_context *ctx); -static void init_lsa_recv_anon_bind(struct composite_context *ctx); -static void init_lsa_recv_auth_bind(struct composite_context *ctx); static void init_lsa_recv_openpol(struct rpc_request *req); struct composite_context *wb_init_lsa_send(TALLOC_CTX *mem_ctx, - struct smbcli_tree *tree, - uint8_t auth_type, - struct cli_credentials *creds) + struct wbsrv_domain *domain) { struct composite_context *result, *ctx; struct init_lsa_state *state; - result = composite_create(mem_ctx, tree->session->transport->socket->event.ctx); + result = composite_create(mem_ctx, domain->netlogon_pipe->conn->event_ctx); if (result == NULL) goto failed; state = talloc(result, struct init_lsa_state); @@ -63,16 +61,11 @@ struct composite_context *wb_init_lsa_send(TALLOC_CTX *mem_ctx, state->ctx = result; result->private_data = state; - state->auth_type = auth_type; - state->creds = creds; - - state->lsa_pipe = dcerpc_pipe_init(state, result->event_ctx); - if (state->lsa_pipe == NULL) goto failed; - - ctx = dcerpc_pipe_open_smb_send(state->lsa_pipe, tree, - "\\lsarpc"); - ctx->async.fn = init_lsa_recv_pipe; - ctx->async.private_data = state; + /* this will make the secondary connection on the same IPC$ share, + secured with SPNEGO or NTLMSSP */ + ctx = dcerpc_secondary_connection_send(domain->netlogon_pipe, + domain->lsa_binding); + composite_continue(state->ctx, ctx, init_lsa_recv_pipe, state); return result; failed: @@ -82,81 +75,13 @@ struct composite_context *wb_init_lsa_send(TALLOC_CTX *mem_ctx, static void init_lsa_recv_pipe(struct composite_context *ctx) { - struct init_lsa_state *state = - talloc_get_type(ctx->async.private_data, - struct init_lsa_state); - - state->ctx->status = dcerpc_pipe_open_smb_recv(ctx); - if (!composite_is_ok(state->ctx)) return; - - switch (state->auth_type) { - case DCERPC_AUTH_TYPE_NONE: - ctx = dcerpc_bind_auth_none_send(state, state->lsa_pipe, - &dcerpc_table_lsarpc); - composite_continue(state->ctx, ctx, init_lsa_recv_anon_bind, - state); - break; - case DCERPC_AUTH_TYPE_NTLMSSP: - case DCERPC_AUTH_TYPE_SCHANNEL: - { - uint8_t auth_type; - if (lp_winbind_sealed_pipes()) { - auth_type = DCERPC_AUTH_LEVEL_PRIVACY; - } else { - auth_type = DCERPC_AUTH_LEVEL_INTEGRITY; - } - if (state->creds == NULL) { - composite_error(state->ctx, NT_STATUS_INTERNAL_ERROR); - return; - } - ctx = dcerpc_bind_auth_send(state, state->lsa_pipe, - &dcerpc_table_lsarpc, - state->creds, state->auth_type, - auth_type, - NULL); - composite_continue(state->ctx, ctx, init_lsa_recv_auth_bind, - state); - break; - } - default: - composite_error(state->ctx, NT_STATUS_INTERNAL_ERROR); - } -} - -static void init_lsa_recv_anon_bind(struct composite_context *ctx) -{ - struct init_lsa_state *state = - talloc_get_type(ctx->async.private_data, - struct init_lsa_state); struct rpc_request *req; - - state->ctx->status = dcerpc_bind_auth_none_recv(ctx); - if (!composite_is_ok(state->ctx)) return; - - state->handle = talloc(state, struct policy_handle); - if (composite_nomem(state->handle, state->ctx)) return; - - state->openpolicy.in.system_name = - talloc_asprintf(state, "\\\\%s", - dcerpc_server_name(state->lsa_pipe)); - ZERO_STRUCT(state->objectattr); - state->openpolicy.in.attr = &state->objectattr; - state->openpolicy.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED; - state->openpolicy.out.handle = state->handle; - - req = dcerpc_lsa_OpenPolicy2_send(state->lsa_pipe, state, - &state->openpolicy); - composite_continue_rpc(state->ctx, req, init_lsa_recv_openpol, state); -} - -static void init_lsa_recv_auth_bind(struct composite_context *ctx) -{ struct init_lsa_state *state = talloc_get_type(ctx->async.private_data, struct init_lsa_state); - struct rpc_request *req; - state->ctx->status = dcerpc_bind_auth_recv(ctx); + state->ctx->status = dcerpc_secondary_connection_recv(ctx, + &state->lsa_pipe); if (!composite_is_ok(state->ctx)) return; state->handle = talloc(state, struct policy_handle); @@ -206,150 +131,3 @@ NTSTATUS wb_init_lsa_recv(struct composite_context *c, return status; } - -/* - * Connect to LSA using the credentials, try NTLMSSP and SCHANNEL using the - * given credentials. If both fail or no credentials are available, fall back - * to an anonymous bind. - */ - -struct connect_lsa_state { - struct composite_context *ctx; - struct smbcli_tree *tree; - struct cli_credentials *credentials; - - uint8_t auth_type; - struct dcerpc_pipe *lsa_pipe; - struct policy_handle *lsa_policy; -}; - -static void connect_lsa_recv_ntlmssp(struct composite_context *ctx); -static void connect_lsa_recv_schannel(struct composite_context *ctx); -static void connect_lsa_recv_anon(struct composite_context *ctx); - -struct composite_context *wb_connect_lsa_send(TALLOC_CTX *mem_ctx, - struct smbcli_tree *tree, - struct cli_credentials *credentials) -{ - struct composite_context *result, *ctx; - struct connect_lsa_state *state; - - result = composite_create(mem_ctx, tree->session->transport->socket->event.ctx); - if (result == NULL) goto failed; - - state = talloc(result, struct connect_lsa_state); - if (state == NULL) goto failed; - state->ctx = result; - result->private_data = state; - - state->tree = tree; - state->credentials = credentials; - - if (credentials == NULL) { - ctx = wb_init_lsa_send(state, tree, DCERPC_AUTH_TYPE_NONE, - NULL); - if (ctx == NULL) goto failed; - ctx->async.fn = connect_lsa_recv_anon; - ctx->async.private_data = state; - return result; - } - - ctx = wb_init_lsa_send(state, tree, DCERPC_AUTH_TYPE_NTLMSSP, - credentials); - if (ctx == NULL) goto failed; - ctx->async.fn = connect_lsa_recv_ntlmssp; - ctx->async.private_data = state; - return result; - - failed: - talloc_free(result); - return NULL; -} - -static void connect_lsa_recv_ntlmssp(struct composite_context *ctx) -{ - struct connect_lsa_state *state = - talloc_get_type(ctx->async.private_data, - struct connect_lsa_state); - - state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe, - &state->lsa_policy); - - if (NT_STATUS_IS_OK(state->ctx->status)) { - state->auth_type = DCERPC_AUTH_TYPE_NTLMSSP; - composite_done(state->ctx); - return; - } - - ctx = wb_init_lsa_send(state, state->tree, DCERPC_AUTH_TYPE_SCHANNEL, - state->credentials); - composite_continue(state->ctx, ctx, - connect_lsa_recv_schannel, state); -} - -static void connect_lsa_recv_schannel(struct composite_context *ctx) -{ - struct connect_lsa_state *state = - talloc_get_type(ctx->async.private_data, - struct connect_lsa_state); - - state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe, - &state->lsa_policy); - - if (NT_STATUS_IS_OK(state->ctx->status)) { - state->auth_type = DCERPC_AUTH_TYPE_SCHANNEL; - composite_done(state->ctx); - return; - } - - ctx = wb_init_lsa_send(state, state->tree, DCERPC_AUTH_TYPE_NONE, - state->credentials); - composite_continue(state->ctx, ctx, - connect_lsa_recv_anon, state); -} - -static void connect_lsa_recv_anon(struct composite_context *ctx) -{ - struct connect_lsa_state *state = - talloc_get_type(ctx->async.private_data, - struct connect_lsa_state); - - state->ctx->status = wb_init_lsa_recv(ctx, state, &state->lsa_pipe, - &state->lsa_policy); - if (!composite_is_ok(state->ctx)) return; - - state->auth_type = DCERPC_AUTH_TYPE_NONE; - composite_done(state->ctx); -} - -NTSTATUS wb_connect_lsa_recv(struct composite_context *c, - TALLOC_CTX *mem_ctx, - uint8_t *auth_type, - struct dcerpc_pipe **lsa_pipe, - struct policy_handle **lsa_policy) -{ - NTSTATUS status = composite_wait(c); - if (NT_STATUS_IS_OK(status)) { - struct connect_lsa_state *state = - talloc_get_type(c->private_data, - struct connect_lsa_state); - *auth_type = state->auth_type; - *lsa_pipe = talloc_steal(mem_ctx, state->lsa_pipe); - *lsa_policy = talloc_steal(mem_ctx, state->lsa_policy); - } - talloc_free(c); - return status; -} - -NTSTATUS wb_connect_lsa(TALLOC_CTX *mem_ctx, - struct smbcli_tree *tree, - struct cli_credentials *credentials, - uint8_t *auth_type, - struct dcerpc_pipe **lsa_pipe, - struct policy_handle **lsa_policy) -{ - struct composite_context *c; - c = wb_connect_lsa_send(mem_ctx, tree, credentials); - return wb_connect_lsa_recv(c, mem_ctx, auth_type, lsa_pipe, - lsa_policy); -} -- cgit