freeswitch号码黑名单
概述
freeswitch是一款简单好用的的VOIP开源软交换平台。
在客户的呼叫过程中，会遇到一些异常的号码，包括高投诉风险号码、敏感号码、特殊号码等。
在客户呼叫流程中，需要针对这些异常号码做呼叫限制，最简单直接的方式就是设置号码黑名单。
环境
centos：CentOS release 7.0 (Final)或以上版本
freeswitch：v1.10.7
GCC：4.8.5
黑名单模块
fs自带的黑名单模块mod_blacklist，模块默认不编译安装，需要进入“src/mod/applications/mod_blacklist”目录，手动编译安装。
该模块设计的目标是作为工具模块，可以在dialplan或脚本中直接返回true或false。
模块对应的配置文件是“autoload_configs/blacklist.conf.xml”。
拨号计划示例
添加号码进黑名单
检查黑名单
删除黑名单
API接口
[email protected]> blacklist help
blacklist check
blacklist add
blacklist del
blacklist save
blacklist reload
blacklist help
+OK
测试
修改“autoload_configs/modules.conf.xml”
修改“autoload_configs/blacklist.conf.xml”
创建文件“conf/blacklists/blocked.list”，并保证fs有写权限。
测试API
[email protected]> blacklist check blocked 12345
false
[email protected]> blacklist add blocked 12345
+OK
2022-12-09 14:37:54.549789 [INFO] mod_blacklist.c:228 Added [12345] to list [blocked]
[email protected]> blacklist check blocked 12345
true
[email protected]> blacklist save blocked
2022-12-09 14:38:27.989788 [INFO] mod_blacklist.c:280 Saving blocked to ../conf-test//blacklists/blocked.list
2022-12-09 14:38:27.989788 [DEBUG] mod_blacklist.c:288 adding 12345 to the dump file
修改“dialplan/test.xml”
发起测试呼叫，10010->12345
2022-12-09 14:58:55.049767 [INFO] mod_dialplan_xml.c:637 Processing 10011 <10011>->12345 in context public
Dialplan: sofia/external/[email protected] parsing [public->test_blacklist] continue=true
Dialplan: sofia/external/[email protected] Regex (PASS) [test_blacklist] ${blacklist(check blocked ${destination_number})}(true) =~ /^true$/ break=on-true
Dialplan: sofia/external/[email protected] Action hangup(CALL_REJECTED)
...
EXECUTE sofia/external/[email protected] hangup(CALL_REJECTED)
...
2022-12-09 14:58:55.049767 [DEBUG] mod_sofia.c:440 Channel sofia/external/[email protected] hanging up, cause: CALL_REJECTED
2022-12-09 14:58:55.049767 [DEBUG] mod_sofia.c:579 Responding to INVITE with: 603
2022-12-09 14:58:55.049767 [DEBUG] switch_core_state_machine.c:60 sofia/external/[email protected] Standard HANGUP, cause: CALL_REJECTED
总结
voip呼叫系统中，黑名单的需求很普遍，fs自带的mod_blacklist基本可以满足大部分场景的需求。
空空如常
求真得真