| -- Copyright (c) 2016 IBM. All rights reserved. |
| -- |
| -- Permission is hereby granted, free of charge, to any person obtaining a |
| -- copy of this software and associated documentation files (the "Software"), |
| -- to deal in the Software without restriction, including without limitation |
| -- the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| -- and/or sell copies of the Software, and to permit persons to whom the |
| -- Software is furnished to do so, subject to the following conditions: |
| -- |
| -- The above copyright notice and this permission notice shall be included in |
| -- all copies or substantial portions of the Software. |
| -- |
| -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| -- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| -- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| -- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| -- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| -- FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| -- DEALINGS IN THE SOFTWARE. |
| |
| --- @module mapping |
| -- Process mapping object, turning implementation details into request transformations |
| -- @author Cody Walker (cmwalker), Alex Song (songs) |
| |
| local redis = require "lib/redis" |
| local utils = require "lib/utils" |
| local request = require "lib/request" |
| |
| local REDIS_HOST = os.getenv("REDIS_HOST") |
| local REDIS_PORT = os.getenv("REDIS_PORT") |
| local REDIS_PASS = os.getenv("REDIS_PASS") |
| |
| local _M = {} |
| |
| --- Validate that the given subscription is in redis |
| -- @param tenant the namespace |
| -- @param gatewayPath the gateway path to use, if scope is resource |
| -- @param apiId api Id to use, if scope is api |
| -- @param scope scope of the subscription |
| -- @param apiKey the subscription api key |
| -- @param return boolean value indicating if the subscription exists in redis |
| function validateAPIKey(tenant, gatewayPath, apiId, scope, apiKey) |
| -- Open connection to redis or use one from connection pool |
| local red = redis.init(REDIS_HOST, REDIS_PORT, REDIS_PASS, 1000) |
| local k |
| if scope == 'tenant' then |
| k = utils.concatStrings({'subscriptions:tenant:', tenant}) |
| elseif scope == 'resource' then |
| k = utils.concatStrings({'subscriptions:tenant:', tenant, ':resource:', gatewayPath}) |
| elseif scope == 'api' then |
| k = utils.concatStrings({'subscriptions:tenant:', tenant, ':api:', apiId}) |
| end |
| k = utils.concatStrings({k, ':key:', apiKey}) |
| local exists = red:exists(k) |
| redis.close(red) |
| return exists == 1 |
| end |
| |
| --- Process the security object |
| -- @param securityObj security object from nginx conf file |
| -- @return apiKey api key for the subscription |
| function processAPIKey(securityObj) |
| local tenant = ngx.var.tenant |
| local gatewayPath = ngx.var.gatewayPath |
| local apiId = ngx.var.apiId |
| local scope = securityObj.scope |
| local header = (securityObj.header == nil) and 'x-api-key' or securityObj.header |
| local apiKey = ngx.var[utils.concatStrings({'http_', header}):gsub("-", "_")] |
| if not apiKey then |
| request.err(401, utils.concatStrings({'API key header "', header, '" is required.'})) |
| end |
| local ok = validateAPIKey(tenant, gatewayPath, apiId, scope, apiKey) |
| if not ok then |
| request.err(401, 'Invalid API key.') |
| end |
| return apiKey |
| end |
| |
| _M.processAPIKey = processAPIKey |
| |
| return _M |