mirror of https://gitee.com/bigwinds/arangodb
738 lines
22 KiB
C
738 lines
22 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// @brief vocbase authentication and authorisation
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2012-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "auth.h"
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#include "BasicsC/json.h"
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#include "BasicsC/logging.h"
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#include "BasicsC/tri-strings.h"
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#include "ShapedJson/shape-accessor.h"
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#include "VocBase/collection.h"
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#include "VocBase/document-collection.h"
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#include "VocBase/vocbase.h"
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#include "VocBase/voc-shaper.h"
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// -----------------------------------------------------------------------------
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// --SECTION-- private functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup VocBase
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief hashes a string
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////////////////////////////////////////////////////////////////////////////////
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static uint64_t HashKey (TRI_associative_pointer_t* array,
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void const* key) {
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char const* k = (char const*) key;
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return TRI_FnvHashString(k);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief hashes the auth info
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////////////////////////////////////////////////////////////////////////////////
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static uint64_t HashElementAuthInfo (TRI_associative_pointer_t* array,
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void const* element) {
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TRI_vocbase_auth_t const* e = element;
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return TRI_FnvHashString(e->_username);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief compares an auth info and a username
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////////////////////////////////////////////////////////////////////////////////
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static bool EqualKeyAuthInfo (TRI_associative_pointer_t* array,
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void const* key,
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void const* element) {
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char const* k = (char const*) key;
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TRI_vocbase_auth_t const* e = element;
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return TRI_EqualString(k, e->_username);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief hashes the cache entry
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////////////////////////////////////////////////////////////////////////////////
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static uint64_t HashElementAuthCache (TRI_associative_pointer_t* array,
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void const* element) {
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TRI_vocbase_auth_cache_t const* e = element;
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return TRI_FnvHashString(e->_hash);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief compares a auth cache entry and a hash
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////////////////////////////////////////////////////////////////////////////////
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static bool EqualKeyAuthCache (TRI_associative_pointer_t* array,
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void const* key,
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void const* element) {
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char const* k = (char const*) key;
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TRI_vocbase_auth_cache_t const* e = element;
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return TRI_EqualString(k, e->_hash);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief extracts a string
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////////////////////////////////////////////////////////////////////////////////
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static char* ExtractStringShapedJson (TRI_shaper_t* shaper,
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TRI_shaped_json_t const* document,
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char const* path) {
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TRI_json_t* json;
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TRI_shape_pid_t pid;
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TRI_shape_t const* shape;
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TRI_shaped_json_t shaped;
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bool ok;
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char* result;
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pid = shaper->lookupAttributePathByName(shaper, path);
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if (pid == 0) {
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return NULL;
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}
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ok = TRI_ExtractShapedJsonVocShaper(shaper, document, 0, pid, &shaped, &shape);
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if (! ok || shape == NULL) {
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return NULL;
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}
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json = TRI_JsonShapedJson(shaper, &shaped);
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if (json == NULL) {
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return NULL;
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}
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if (! TRI_IsStringJson(json)) {
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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return NULL;
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}
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result = TRI_DuplicateString2(json->_value._string.data,
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json->_value._string.length - 1);
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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return result;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief extracts a boolean
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////////////////////////////////////////////////////////////////////////////////
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static bool ExtractBooleanShapedJson (TRI_shaper_t* shaper,
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TRI_shaped_json_t const* document,
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char const* path,
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bool* found) {
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TRI_json_t* json;
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TRI_shape_pid_t pid;
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TRI_shape_t const* shape;
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TRI_shaped_json_t shaped;
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bool result;
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bool ok;
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if (found != NULL) {
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*found = false;
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}
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pid = shaper->lookupAttributePathByName(shaper, path);
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if (pid == 0) {
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return false;
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}
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ok = TRI_ExtractShapedJsonVocShaper(shaper, document, 0, pid, &shaped, &shape);
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if (! ok || shape == NULL) {
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return false;
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}
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json = TRI_JsonShapedJson(shaper, &shaped);
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if (json == NULL) {
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return false;
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}
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if (json->_type != TRI_JSON_BOOLEAN) {
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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return false;
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}
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if (found != NULL) {
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*found = true;
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}
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result = json->_value._boolean;
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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return result;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief frees the auth information
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////////////////////////////////////////////////////////////////////////////////
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static void FreeAuthInfo (TRI_vocbase_auth_t* auth) {
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TRI_Free(TRI_CORE_MEM_ZONE, auth->_username);
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TRI_Free(TRI_CORE_MEM_ZONE, auth->_password);
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TRI_Free(TRI_UNKNOWN_MEM_ZONE, auth);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief frees the cache information
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////////////////////////////////////////////////////////////////////////////////
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static void FreeAuthCacheInfo (TRI_vocbase_auth_cache_t* cached) {
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if (cached->_hash != NULL) {
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TRI_Free(TRI_CORE_MEM_ZONE, cached->_hash);
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}
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if (cached->_username == NULL) {
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TRI_Free(TRI_CORE_MEM_ZONE, cached->_username);
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}
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TRI_Free(TRI_CORE_MEM_ZONE, cached);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief extracts the auth information
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////////////////////////////////////////////////////////////////////////////////
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static TRI_vocbase_auth_t* ConvertAuthInfo (TRI_vocbase_t* vocbase,
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TRI_primary_collection_t* primary,
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TRI_shaped_json_t const* document) {
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TRI_shaper_t* shaper;
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char* user;
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char* password;
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bool active;
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bool found;
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TRI_vocbase_auth_t* result;
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shaper = primary->_shaper;
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// extract username
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user = ExtractStringShapedJson(shaper, document, "user");
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if (user == NULL) {
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LOG_DEBUG("cannot extract username");
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return NULL;
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}
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// extract password
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password = ExtractStringShapedJson(shaper, document, "password");
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if (password == NULL) {
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TRI_FreeString(TRI_CORE_MEM_ZONE, user);
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LOG_DEBUG("cannot extract password");
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return NULL;
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}
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// extract active flag
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active = ExtractBooleanShapedJson(shaper, document, "active", &found);
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if (! found) {
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TRI_FreeString(TRI_CORE_MEM_ZONE, user);
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TRI_FreeString(TRI_CORE_MEM_ZONE, password);
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LOG_DEBUG("cannot extract active flag");
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return NULL;
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}
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result = TRI_Allocate(TRI_UNKNOWN_MEM_ZONE, sizeof(TRI_vocbase_auth_t), true);
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if (result == NULL) {
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TRI_FreeString(TRI_CORE_MEM_ZONE, user);
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TRI_FreeString(TRI_CORE_MEM_ZONE, password);
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LOG_ERROR("couldn't load auth information - out of memory");
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return NULL;
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}
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result->_username = user;
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result->_password = password;
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result->_active = active;
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return result;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief clears the authentication info
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/// the caller must acquire the lock itself
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////////////////////////////////////////////////////////////////////////////////
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static void ClearAuthInfo (TRI_vocbase_t* vocbase) {
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void** beg;
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void** end;
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void** ptr;
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// clear auth info table
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beg = vocbase->_authInfo._table;
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end = vocbase->_authInfo._table + vocbase->_authInfo._nrAlloc;
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ptr = beg;
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for (; ptr < end; ++ptr) {
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if (*ptr) {
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TRI_vocbase_auth_t* auth = *ptr;
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FreeAuthInfo(auth);
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*ptr = NULL;
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}
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}
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vocbase->_authInfo._nrUsed = 0;
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// clear cache
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beg = vocbase->_authCache._table;
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end = vocbase->_authCache._table + vocbase->_authCache._nrAlloc;
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ptr = beg;
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for (; ptr < end; ++ptr) {
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if (*ptr) {
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TRI_vocbase_auth_cache_t* auth = *ptr;
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FreeAuthCacheInfo(auth);
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*ptr = NULL;
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}
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}
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vocbase->_authCache._nrUsed = 0;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup VocBase
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief initialises the authentication info
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////////////////////////////////////////////////////////////////////////////////
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int TRI_InitAuthInfo (TRI_vocbase_t* vocbase) {
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TRI_InitAssociativePointer(&vocbase->_authInfo,
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TRI_CORE_MEM_ZONE,
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HashKey,
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HashElementAuthInfo,
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EqualKeyAuthInfo,
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NULL);
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TRI_InitAssociativePointer(&vocbase->_authCache,
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TRI_CORE_MEM_ZONE,
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HashKey,
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HashElementAuthCache,
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EqualKeyAuthCache,
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NULL);
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TRI_InitReadWriteLock(&vocbase->_authInfoLock);
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return TRI_ERROR_NO_ERROR;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys the authentication info
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////////////////////////////////////////////////////////////////////////////////
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void TRI_DestroyAuthInfo (TRI_vocbase_t* vocbase) {
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TRI_ClearAuthInfo(vocbase);
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TRI_DestroyReadWriteLock(&vocbase->_authInfoLock);
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TRI_DestroyAssociativePointer(&vocbase->_authCache);
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TRI_DestroyAssociativePointer(&vocbase->_authInfo);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief insert initial authentication info
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////////////////////////////////////////////////////////////////////////////////
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bool TRI_InsertInitialAuthInfo (TRI_vocbase_t* vocbase) {
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TRI_json_t* json;
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TRI_json_t* user;
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json = TRI_CreateList2Json(TRI_UNKNOWN_MEM_ZONE, 1);
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if (json == NULL) {
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return false;
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}
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user = TRI_CreateArrayJson(TRI_UNKNOWN_MEM_ZONE);
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if (user == NULL) {
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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return false;
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}
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// username
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TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE,
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user,
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"user",
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TRI_CreateStringCopyJson(TRI_UNKNOWN_MEM_ZONE, "root"));
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// password
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TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE,
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user,
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"password",
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TRI_CreateStringCopyJson(TRI_UNKNOWN_MEM_ZONE, "$1$c776f5f4$ef74bc6fd59ac713bf5929c5ac2f42233e50d4d58748178132ea46dec433bd5b"));
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// active
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TRI_Insert3ArrayJson(TRI_UNKNOWN_MEM_ZONE,
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user,
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"active",
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TRI_CreateBooleanJson(TRI_UNKNOWN_MEM_ZONE, true));
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TRI_PushBack3ListJson(TRI_UNKNOWN_MEM_ZONE, json, user);
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TRI_PopulateAuthInfo(vocbase, json);
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief loads the authentication info
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////////////////////////////////////////////////////////////////////////////////
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bool TRI_LoadAuthInfo (TRI_vocbase_t* vocbase) {
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TRI_vocbase_col_t* collection;
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TRI_primary_collection_t* primary;
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void** beg;
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void** end;
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void** ptr;
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LOG_DEBUG("starting to load authentication and authorisation information");
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collection = TRI_LookupCollectionByNameVocBase(vocbase, TRI_COL_NAME_USERS);
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if (collection == NULL) {
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LOG_INFO("collection '_users' does not exist, no authentication available");
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return false;
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}
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TRI_UseCollectionVocBase(vocbase, collection);
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primary = collection->_collection;
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if (primary == NULL) {
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LOG_FATAL_AND_EXIT("collection '_users' cannot be loaded");
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}
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TRI_WriteLockReadWriteLock(&vocbase->_authInfoLock);
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ClearAuthInfo(vocbase);
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// .............................................................................
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// inside a write transaction
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// .............................................................................
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collection->_collection->beginRead(collection->_collection);
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beg = primary->_primaryIndex._table;
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end = beg + primary->_primaryIndex._nrAlloc;
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ptr = beg;
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for (; ptr < end; ++ptr) {
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if (*ptr) {
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TRI_vocbase_auth_t* auth;
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TRI_doc_mptr_t const* d;
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TRI_shaped_json_t shapedJson;
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d = (TRI_doc_mptr_t const*) *ptr;
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TRI_EXTRACT_SHAPED_JSON_MARKER(shapedJson, d->_data);
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auth = ConvertAuthInfo(vocbase, primary, &shapedJson);
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if (auth != NULL) {
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TRI_vocbase_auth_t* old;
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old = TRI_InsertKeyAssociativePointer(&vocbase->_authInfo, auth->_username, auth, true);
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if (old != NULL) {
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FreeAuthInfo(old);
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}
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}
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}
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}
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collection->_collection->endRead(collection->_collection);
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// .............................................................................
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// outside a write transaction
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// .............................................................................
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TRI_WriteUnlockReadWriteLock(&vocbase->_authInfoLock);
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TRI_ReleaseCollectionVocBase(vocbase, collection);
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief populate the authentication info
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////////////////////////////////////////////////////////////////////////////////
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bool TRI_PopulateAuthInfo (TRI_vocbase_t* vocbase,
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TRI_json_t const* json) {
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size_t i, n;
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assert(TRI_IsListJson(json));
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n = json->_value._objects._length;
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TRI_WriteLockReadWriteLock(&vocbase->_authInfoLock);
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ClearAuthInfo(vocbase);
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for (i = 0; i < n; ++i) {
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TRI_json_t const* user;
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TRI_json_t const* username;
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TRI_json_t const* password;
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TRI_json_t const* active;
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TRI_vocbase_auth_t* auth;
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user = TRI_LookupListJson(json, i);
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if (! TRI_IsArrayJson(user)) {
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continue;
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}
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username = TRI_LookupArrayJson(user, "user");
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password = TRI_LookupArrayJson(user, "password");
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active = TRI_LookupArrayJson(user, "active");
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if (! TRI_IsStringJson(username) ||
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! TRI_IsStringJson(password) ||
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! TRI_IsBooleanJson(active)) {
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continue;
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}
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auth = TRI_Allocate(TRI_UNKNOWN_MEM_ZONE, sizeof(TRI_vocbase_auth_t), true);
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if (auth == NULL) {
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continue;
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}
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auth->_username = TRI_DuplicateString2Z(TRI_CORE_MEM_ZONE,
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username->_value._string.data,
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username->_value._string.length - 1);
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auth->_password = TRI_DuplicateString2Z(TRI_CORE_MEM_ZONE,
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password->_value._string.data,
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password->_value._string.length - 1);
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auth->_active = active->_value._boolean;
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TRI_InsertKeyAssociativePointer(&vocbase->_authInfo,
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auth->_username,
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auth,
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false);
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}
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TRI_WriteUnlockReadWriteLock(&vocbase->_authInfoLock);
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return true;
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}
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|
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////////////////////////////////////////////////////////////////////////////////
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/// @brief reload the authentication info
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/// this must be executed after the underlying _users collection is modified
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////////////////////////////////////////////////////////////////////////////////
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bool TRI_ReloadAuthInfo (TRI_vocbase_t* vocbase) {
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return TRI_LoadAuthInfo(vocbase);
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}
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|
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////////////////////////////////////////////////////////////////////////////////
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/// @brief clears the authentication info
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////////////////////////////////////////////////////////////////////////////////
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|
|
|
void TRI_ClearAuthInfo (TRI_vocbase_t* vocbase) {
|
|
TRI_WriteLockReadWriteLock(&vocbase->_authInfoLock);
|
|
ClearAuthInfo(vocbase);
|
|
TRI_WriteUnlockReadWriteLock(&vocbase->_authInfoLock);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief looks up authentication data in the cache
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
char* TRI_CheckCacheAuthInfo (TRI_vocbase_t* vocbase,
|
|
char const* hash) {
|
|
TRI_vocbase_auth_cache_t* cached;
|
|
char* username;
|
|
|
|
username = NULL;
|
|
|
|
TRI_ReadLockReadWriteLock(&vocbase->_authInfoLock);
|
|
cached = TRI_LookupByKeyAssociativePointer(&vocbase->_authCache, hash);
|
|
|
|
if (cached != NULL) {
|
|
username = TRI_DuplicateStringZ(TRI_CORE_MEM_ZONE, cached->_username);
|
|
}
|
|
|
|
TRI_ReadUnlockReadWriteLock(&vocbase->_authInfoLock);
|
|
|
|
// might be NULL
|
|
return username;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @brief checks the authentication
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
bool TRI_CheckAuthenticationAuthInfo (TRI_vocbase_t* vocbase,
|
|
char const* hash,
|
|
char const* username,
|
|
char const* password) {
|
|
TRI_vocbase_auth_t* auth;
|
|
bool res;
|
|
char* hex;
|
|
char* sha256;
|
|
size_t hexLen;
|
|
size_t len;
|
|
size_t sha256Len;
|
|
|
|
assert(vocbase != NULL);
|
|
|
|
// look up username
|
|
TRI_ReadLockReadWriteLock(&vocbase->_authInfoLock);
|
|
auth = TRI_LookupByKeyAssociativePointer(&vocbase->_authInfo, username);
|
|
|
|
if (auth == NULL || ! auth->_active) {
|
|
TRI_ReadUnlockReadWriteLock(&vocbase->_authInfoLock);
|
|
return false;
|
|
}
|
|
|
|
// convert password
|
|
res = false;
|
|
|
|
if (TRI_IsPrefixString(auth->_password, "$1$")) {
|
|
if (strlen(auth->_password) < 12 || auth->_password[11] != '$') {
|
|
LOG_WARNING("found corrupted password for user '%s'", username);
|
|
}
|
|
else {
|
|
char* salted;
|
|
|
|
len = 8 + strlen(password);
|
|
salted = TRI_Allocate(TRI_CORE_MEM_ZONE, len + 1, false);
|
|
memcpy(salted, auth->_password + 3, 8);
|
|
memcpy(salted + 8, password, len - 8);
|
|
salted[len] = '\0';
|
|
|
|
sha256 = TRI_SHA256String(salted, len, &sha256Len);
|
|
TRI_FreeString(TRI_CORE_MEM_ZONE, salted);
|
|
|
|
hex = TRI_EncodeHexString(sha256, sha256Len, &hexLen);
|
|
TRI_FreeString(TRI_CORE_MEM_ZONE, sha256);
|
|
|
|
LOG_DEBUG("found active user '%s', expecting password '%s', got '%s'",
|
|
username,
|
|
auth->_password + 12,
|
|
hex);
|
|
|
|
res = TRI_EqualString(auth->_password + 12, hex);
|
|
TRI_FreeString(TRI_CORE_MEM_ZONE, hex);
|
|
}
|
|
}
|
|
else {
|
|
len = strlen(password);
|
|
sha256 = TRI_SHA256String(password, len, &sha256Len);
|
|
|
|
hex = TRI_EncodeHexString(sha256, sha256Len, &hexLen);
|
|
TRI_FreeString(TRI_CORE_MEM_ZONE, sha256);
|
|
|
|
LOG_DEBUG("found active user '%s', expecting password '%s', got '%s'",
|
|
username,
|
|
auth->_password + 12,
|
|
hex);
|
|
|
|
res = TRI_EqualString(auth->_password, hex);
|
|
TRI_FreeString(TRI_CORE_MEM_ZONE, hex);
|
|
}
|
|
|
|
TRI_ReadUnlockReadWriteLock(&vocbase->_authInfoLock);
|
|
|
|
if (res && hash != NULL) {
|
|
// insert item into the cache
|
|
TRI_vocbase_auth_cache_t* cached;
|
|
|
|
cached = TRI_Allocate(TRI_CORE_MEM_ZONE, sizeof(TRI_vocbase_auth_cache_t), false);
|
|
|
|
if (cached != NULL) {
|
|
void* old;
|
|
|
|
cached->_hash = TRI_DuplicateStringZ(TRI_CORE_MEM_ZONE, hash);
|
|
cached->_username = TRI_DuplicateStringZ(TRI_CORE_MEM_ZONE, username);
|
|
|
|
if (cached->_hash == NULL || cached->_username == NULL) {
|
|
FreeAuthCacheInfo(cached);
|
|
return res;
|
|
}
|
|
|
|
TRI_WriteLockReadWriteLock(&vocbase->_authInfoLock);
|
|
old = TRI_InsertKeyAssociativePointer(&vocbase->_authCache, cached->_hash, cached, false);
|
|
|
|
// duplicate entry?
|
|
if (old != NULL) {
|
|
FreeAuthCacheInfo(cached);
|
|
}
|
|
|
|
TRI_WriteUnlockReadWriteLock(&vocbase->_authInfoLock);
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
/// @}
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// --SECTION-- END-OF-FILE
|
|
// -----------------------------------------------------------------------------
|
|
|
|
// Local Variables:
|
|
// mode: outline-minor
|
|
// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|/// @page\\|// --SECTION--\\|/// @\\}"
|
|
// End:
|