From f23eea294a64fac3cc85609468703fc15f7e3187 Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Mon, 6 Apr 2009 22:51:32 +1000 Subject: Push schannel_state.c into the top level. This is the server side state for netlogon credential chaining Andrew Bartlett --- source4/auth/gensec/config.mk | 2 +- source4/auth/gensec/schannel_state.c | 283 ----------------------------------- 2 files changed, 1 insertion(+), 284 deletions(-) (limited to 'source4/auth/gensec') diff --git a/source4/auth/gensec/config.mk b/source4/auth/gensec/config.mk index 27cf442b68..a9ce228f12 100644 --- a/source4/auth/gensec/config.mk +++ b/source4/auth/gensec/config.mk @@ -78,7 +78,7 @@ $(eval $(call proto_header_template,$(gensecsrcdir)/schannel_proto.h,$(gensec_sc ################################################ # Start SUBSYSTEM SCHANNELDB [SUBSYSTEM::SCHANNELDB] -PRIVATE_DEPENDENCIES = LDB_WRAP +PRIVATE_DEPENDENCIES = LDB_WRAP COMMON_SCHANNELDB # End SUBSYSTEM SCHANNELDB ################################################ diff --git a/source4/auth/gensec/schannel_state.c b/source4/auth/gensec/schannel_state.c index ca8537cac9..1320db8933 100644 --- a/source4/auth/gensec/schannel_state.c +++ b/source4/auth/gensec/schannel_state.c @@ -21,7 +21,6 @@ #include "includes.h" #include "lib/ldb/include/ldb.h" -#include "librpc/gen_ndr/ndr_security.h" #include "ldb_wrap.h" #include "../lib/util/util_ldb.h" #include "libcli/auth/libcli_auth.h" @@ -29,45 +28,6 @@ #include "param/param.h" #include "auth/gensec/schannel_state.h" -static struct ldb_val *schannel_dom_sid_ldb_val(TALLOC_CTX *mem_ctx, - struct smb_iconv_convenience *smbiconv, - struct dom_sid *sid) -{ - enum ndr_err_code ndr_err; - struct ldb_val *v; - - v = talloc(mem_ctx, struct ldb_val); - if (!v) return NULL; - - ndr_err = ndr_push_struct_blob(v, mem_ctx, smbiconv, sid, - (ndr_push_flags_fn_t)ndr_push_dom_sid); - if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { - talloc_free(v); - return NULL; - } - - return v; -} - -static struct dom_sid *schannel_ldb_val_dom_sid(TALLOC_CTX *mem_ctx, - const struct ldb_val *v) -{ - enum ndr_err_code ndr_err; - struct dom_sid *sid; - - sid = talloc(mem_ctx, struct dom_sid); - if (!sid) return NULL; - - ndr_err = ndr_pull_struct_blob(v, sid, NULL, sid, - (ndr_pull_flags_fn_t)ndr_pull_dom_sid); - if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) { - talloc_free(sid); - return NULL; - } - return sid; -} - - /** connect to the schannel ldb */ @@ -104,246 +64,3 @@ struct ldb_context *schannel_db_connect(TALLOC_CTX *mem_ctx, struct tevent_conte return ldb; } -/* - remember an established session key for a netr server authentication - use a simple ldb structure -*/ -NTSTATUS schannel_store_session_key_ldb(TALLOC_CTX *mem_ctx, - struct ldb_context *ldb, - struct creds_CredentialState *creds) -{ - struct ldb_message *msg; - struct ldb_val val, seed, client_state, server_state; - struct smb_iconv_convenience *smbiconv; - struct ldb_val *sid_val; - char *f; - char *sct; - int ret; - - f = talloc_asprintf(mem_ctx, "%u", (unsigned int)creds->negotiate_flags); - - if (f == NULL) { - return NT_STATUS_NO_MEMORY; - } - - sct = talloc_asprintf(mem_ctx, "%u", (unsigned int)creds->secure_channel_type); - - if (sct == NULL) { - return NT_STATUS_NO_MEMORY; - } - - msg = ldb_msg_new(ldb); - if (msg == NULL) { - return NT_STATUS_NO_MEMORY; - } - - msg->dn = ldb_dn_new_fmt(msg, ldb, "computerName=%s", creds->computer_name); - if ( ! msg->dn) { - return NT_STATUS_NO_MEMORY; - } - - smbiconv = lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")); - sid_val = schannel_dom_sid_ldb_val(msg, smbiconv, creds->sid); - if (sid_val == NULL) { - return NT_STATUS_NO_MEMORY; - } - - val.data = creds->session_key; - val.length = sizeof(creds->session_key); - - seed.data = creds->seed.data; - seed.length = sizeof(creds->seed.data); - - client_state.data = creds->client.data; - client_state.length = sizeof(creds->client.data); - server_state.data = creds->server.data; - server_state.length = sizeof(creds->server.data); - - ldb_msg_add_string(msg, "objectClass", "schannelState"); - ldb_msg_add_value(msg, "sessionKey", &val, NULL); - ldb_msg_add_value(msg, "seed", &seed, NULL); - ldb_msg_add_value(msg, "clientState", &client_state, NULL); - ldb_msg_add_value(msg, "serverState", &server_state, NULL); - ldb_msg_add_string(msg, "negotiateFlags", f); - ldb_msg_add_string(msg, "secureChannelType", sct); - ldb_msg_add_string(msg, "accountName", creds->account_name); - ldb_msg_add_string(msg, "computerName", creds->computer_name); - ldb_msg_add_string(msg, "flatname", creds->domain); - ldb_msg_add_value(msg, "objectSid", sid_val, NULL); - - ldb_delete(ldb, msg->dn); - - ret = ldb_add(ldb, msg); - - if (ret != 0) { - DEBUG(0,("Unable to add %s to session key db - %s\n", - ldb_dn_get_linearized(msg->dn), ldb_errstring(ldb))); - return NT_STATUS_INTERNAL_DB_CORRUPTION; - } - - return NT_STATUS_OK; -} - -NTSTATUS schannel_store_session_key(TALLOC_CTX *mem_ctx, - struct tevent_context *ev_ctx, - struct loadparm_context *lp_ctx, - struct creds_CredentialState *creds) -{ - struct ldb_context *ldb; - NTSTATUS nt_status; - int ret; - - ldb = schannel_db_connect(mem_ctx, ev_ctx, lp_ctx); - if (!ldb) { - return NT_STATUS_ACCESS_DENIED; - } - - ret = ldb_transaction_start(ldb); - if (ret != 0) { - talloc_free(ldb); - return NT_STATUS_INTERNAL_DB_CORRUPTION; - } - - nt_status = schannel_store_session_key_ldb(mem_ctx, ldb, creds); - - if (NT_STATUS_IS_OK(nt_status)) { - ret = ldb_transaction_commit(ldb); - } else { - ret = ldb_transaction_cancel(ldb); - } - - if (ret != 0) { - DEBUG(0,("Unable to commit adding credentials for %s to schannel key db - %s\n", - creds->computer_name, ldb_errstring(ldb))); - talloc_free(ldb); - return NT_STATUS_INTERNAL_DB_CORRUPTION; - } - - talloc_free(ldb); - return nt_status; -} - -/* - read back a credentials back for a computer -*/ -NTSTATUS schannel_fetch_session_key_ldb(TALLOC_CTX *mem_ctx, - struct ldb_context *ldb, - const char *computer_name, - const char *domain, - struct creds_CredentialState **creds) -{ - struct ldb_result *res; - int ret; - const struct ldb_val *val; - - *creds = talloc_zero(mem_ctx, struct creds_CredentialState); - if (!*creds) { - return NT_STATUS_NO_MEMORY; - } - - ret = ldb_search(ldb, mem_ctx, &res, - NULL, LDB_SCOPE_SUBTREE, NULL, - "(&(computerName=%s)(flatname=%s))", computer_name, domain); - if (ret != LDB_SUCCESS) { - DEBUG(3,("schannel: Failed to find a record for client %s: %s\n", computer_name, ldb_errstring(ldb))); - return NT_STATUS_INVALID_HANDLE; - } - if (res->count != 1) { - DEBUG(3,("schannel: Failed to find a record for client: %s (found %d records)\n", computer_name, res->count)); - talloc_free(res); - return NT_STATUS_INVALID_HANDLE; - } - - val = ldb_msg_find_ldb_val(res->msgs[0], "sessionKey"); - if (val == NULL || val->length != 16) { - DEBUG(1,("schannel: record in schannel DB must contain a sessionKey of length 16, when searching for client: %s\n", computer_name)); - talloc_free(res); - return NT_STATUS_INTERNAL_ERROR; - } - - memcpy((*creds)->session_key, val->data, 16); - - val = ldb_msg_find_ldb_val(res->msgs[0], "seed"); - if (val == NULL || val->length != 8) { - DEBUG(1,("schannel: record in schannel DB must contain a vaid seed of length 8, when searching for client: %s\n", computer_name)); - talloc_free(res); - return NT_STATUS_INTERNAL_ERROR; - } - - memcpy((*creds)->seed.data, val->data, 8); - - val = ldb_msg_find_ldb_val(res->msgs[0], "clientState"); - if (val == NULL || val->length != 8) { - DEBUG(1,("schannel: record in schannel DB must contain a vaid clientState of length 8, when searching for client: %s\n", computer_name)); - talloc_free(res); - return NT_STATUS_INTERNAL_ERROR; - } - memcpy((*creds)->client.data, val->data, 8); - - val = ldb_msg_find_ldb_val(res->msgs[0], "serverState"); - if (val == NULL || val->length != 8) { - DEBUG(1,("schannel: record in schannel DB must contain a vaid serverState of length 8, when searching for client: %s\n", computer_name)); - talloc_free(res); - return NT_STATUS_INTERNAL_ERROR; - } - memcpy((*creds)->server.data, val->data, 8); - - (*creds)->negotiate_flags = ldb_msg_find_attr_as_int(res->msgs[0], "negotiateFlags", 0); - - (*creds)->secure_channel_type = ldb_msg_find_attr_as_int(res->msgs[0], "secureChannelType", 0); - - (*creds)->account_name = talloc_strdup(*creds, ldb_msg_find_attr_as_string(res->msgs[0], "accountName", NULL)); - if ((*creds)->account_name == NULL) { - talloc_free(res); - return NT_STATUS_NO_MEMORY; - } - - (*creds)->computer_name = talloc_strdup(*creds, ldb_msg_find_attr_as_string(res->msgs[0], "computerName", NULL)); - if ((*creds)->computer_name == NULL) { - talloc_free(res); - return NT_STATUS_NO_MEMORY; - } - - (*creds)->domain = talloc_strdup(*creds, ldb_msg_find_attr_as_string(res->msgs[0], "flatname", NULL)); - if ((*creds)->domain == NULL) { - talloc_free(res); - return NT_STATUS_NO_MEMORY; - } - - val = ldb_msg_find_ldb_val(res->msgs[0], "objectSid"); - if (val == NULL) { - DEBUG(1,("schannel: missing ObjectSid for client: %s\n", computer_name)); - talloc_free(res); - return NT_STATUS_INTERNAL_ERROR; - } - (*creds)->sid = schannel_ldb_val_dom_sid(*creds, val); - if ((*creds)->sid == NULL) { - talloc_free(res); - return NT_STATUS_INTERNAL_ERROR; - } - - talloc_free(res); - return NT_STATUS_OK; -} - -NTSTATUS schannel_fetch_session_key(TALLOC_CTX *mem_ctx, - struct tevent_context *ev_ctx, - struct loadparm_context *lp_ctx, - const char *computer_name, - const char *domain, - struct creds_CredentialState **creds) -{ - NTSTATUS nt_status; - struct ldb_context *ldb; - - ldb = schannel_db_connect(mem_ctx, ev_ctx, lp_ctx); - if (!ldb) { - return NT_STATUS_ACCESS_DENIED; - } - - nt_status = schannel_fetch_session_key_ldb(mem_ctx, ldb, - computer_name, domain, - creds); - talloc_free(ldb); - return nt_status; -} -- cgit