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feature: implemented plugin
uri-blocklist . (#1727)
first step: #1617
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| -- | ||
| -- Licensed to the Apache Software Foundation (ASF) under one or more | ||
| -- contributor license agreements. See the NOTICE file distributed with | ||
| -- this work for additional information regarding copyright ownership. | ||
| -- The ASF licenses this file to You under the Apache License, Version 2.0 | ||
| -- (the "License"); you may not use this file except in compliance with | ||
| -- the License. You may obtain a copy of the License at | ||
| -- | ||
| -- http://www.apache.org/licenses/LICENSE-2.0 | ||
| -- | ||
| -- Unless required by applicable law or agreed to in writing, software | ||
| -- distributed under the License is distributed on an "AS IS" BASIS, | ||
| -- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| -- See the License for the specific language governing permissions and | ||
| -- limitations under the License. | ||
| -- | ||
| local core = require("apisix.core") | ||
| local re_compile = require("resty.core.regex").re_match_compile | ||
| local re_find = ngx.re.find | ||
| local ipairs = ipairs | ||
|
|
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| local schema = { | ||
| type = "object", | ||
| properties = { | ||
| block_rules = { | ||
| type = "array", | ||
| items = { | ||
| type = "string", | ||
| minLength = 1, | ||
| maxLength = 4096, | ||
| }, | ||
| uniqueItems = true | ||
| }, | ||
| rejected_code = { | ||
| type = "integer", | ||
| minimum = 200, | ||
| default = 403 | ||
| }, | ||
| }, | ||
| required = {"block_rules"}, | ||
| } | ||
|
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|
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| local plugin_name = "uri-blocker" | ||
|
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| local _M = { | ||
| version = 0.1, | ||
| priority = 2900, | ||
| name = plugin_name, | ||
| schema = schema, | ||
| } | ||
|
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|
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| function _M.check_schema(conf) | ||
| local ok, err = core.schema.check(schema, conf) | ||
| if not ok then | ||
| return false, err | ||
| end | ||
|
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| local block_rules = {} | ||
| for i, re_rule in ipairs(conf.block_rules) do | ||
| local ok, err = re_compile(re_rule, "j") | ||
| -- core.log.warn("ok: ", tostring(ok), " err: ", tostring(err), " re_rule: ", re_rule) | ||
| if not ok then | ||
| return false, err | ||
| end | ||
| block_rules[i] = re_rule | ||
| end | ||
|
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| conf.block_rules_concat = core.table.concat(block_rules, "|") | ||
| core.log.info("concat block_rules: ", conf.block_rules_concat) | ||
| return true | ||
| end | ||
|
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| function _M.rewrite(conf, ctx) | ||
| core.log.info("uri: ", ctx.var.request_uri) | ||
| core.log.info("block uri rules: ", conf.block_rules_concat) | ||
| local from = re_find(ctx.var.request_uri, conf.block_rules_concat, "jo") | ||
| if from then | ||
| core.response.exit(conf.rejected_code) | ||
| end | ||
| end | ||
|
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|
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| return _M |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| <!-- | ||
| # | ||
| # Licensed to the Apache Software Foundation (ASF) under one or more | ||
| # contributor license agreements. See the NOTICE file distributed with | ||
| # this work for additional information regarding copyright ownership. | ||
| # The ASF licenses this file to You under the Apache License, Version 2.0 | ||
| # (the "License"); you may not use this file except in compliance with | ||
| # the License. You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| # | ||
| --> | ||
|
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| [Chinese](uri-blocker.md) | ||
|
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| # Summary | ||
|
|
||
| - [**Name**](#name) | ||
| - [**Attributes**](#attributes) | ||
| - [**How To Enable**](#how-to-enable) | ||
| - [**Test Plugin**](#test-plugin) | ||
| - [**Disable Plugin**](#disable-plugin) | ||
|
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| ## Name | ||
|
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| The plugin helps we intercept user requests, we only need to indicate the `block_rules`. | ||
|
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| ## Attributes | ||
|
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| |Name |Requirement |Description| | ||
| |--------- |--------|-----------| | ||
| |block_rules |required|Regular filter rule array. Each of these items is a regular rule. If the current request URI hits any one of them, set the response code to rejected_code to exit the current user request. Example: `["root.exe", "root.m+"]`.| | ||
| |rejected_code |optional|The HTTP status code returned when the request URI hit any of `filter_rule`, default `403`.| | ||
|
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| ## How To Enable | ||
|
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| Here's an example, enable the `uri blocker` plugin on the specified route: | ||
|
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| ```shell | ||
| curl -i http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d ' | ||
| { | ||
| "uri": "/*", | ||
| "plugins": { | ||
| "uri-blocker": { | ||
| "block_rules": ["root.exe", "root.m+"] | ||
| } | ||
| }, | ||
| "upstream": { | ||
| "type": "roundrobin", | ||
| "nodes": { | ||
| "127.0.0.1:1980": 1 | ||
| } | ||
| } | ||
| }' | ||
| ``` | ||
|
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| ## Test Plugin | ||
|
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| ```shell | ||
| $ curl -i http://127.0.0.1:9080/root.exe?a=a | ||
| HTTP/1.1 403 Forbidden | ||
| Date: Wed, 17 Jun 2020 13:55:41 GMT | ||
| Content-Type: text/html; charset=utf-8 | ||
| Content-Length: 150 | ||
| Connection: keep-alive | ||
| Server: APISIX web server | ||
|
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| ... ... | ||
| ``` | ||
|
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| ## Disable Plugin | ||
|
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| When you want to disable the `uri blocker` plugin, it is very simple, | ||
| you can delete the corresponding json configuration in the plugin configuration, | ||
| no need to restart the service, it will take effect immediately: | ||
|
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| ```shell | ||
| curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d ' | ||
| { | ||
| "uri": "/*", | ||
| "upstream": { | ||
| "type": "roundrobin", | ||
| "nodes": { | ||
| "127.0.0.1:1980": 1 | ||
| } | ||
| } | ||
| }' | ||
| ``` | ||
|
|
||
| The `uri blocker` plugin has been disabled now. It works for other plugins. |
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