扩展Asterisk1.8.7的AMI接口

Asterisk的AMI接口已经很丰富了，如果需要扩展，可以参考本文。

一、扩展Asterisk的AMI接口

涉及文件：main/manager.c

1、函数注册

添加 myOriginate接口

在函数int __init_manager(int reload)中添加如下代码：

ast_manager_register_xml("myOriginate", EVENT_FLAG_ORIGINATE,action_myOriginate); // Add by Mike

2、功能实现：

//Add by Mike
static int action_myOriginate(struct mansession *s, const struct message *m)
{
        const char *name = astman_get_header(m, "Channel");
        const char *exten = astman_get_header(m, "Exten");
        const char *context = astman_get_header(m, "Context");
        const char *priority = astman_get_header(m, "Priority");
        const char *timeout = astman_get_header(m, "Timeout");
        const char *callerid = astman_get_header(m, "CallerID");

        char tmp[256];
        int i=0;
        sprintf(tmp,"%ld_%s",time(NULL),name);
        int tmpLen = strlen(tmp);
        for(i=0;i<tmpLen;++i)
        {
                if(isalnum(tmp[i]))
                        continue;
                tmp[i]='_';
        }
        char fileName[1024]={0};
        sprintf(fileName,"/var/spool/asterisk/outgoing/%s.call",tmp);
        // FILE *fp = fopen("/var/spool/asterisk/outgoing/1.call","w");
        FILE *fp = fopen(fileName,"w");
        char buf[1024]={0};
        sprintf(tmp,"channel: %s\r\n",name);
        strcpy(buf,tmp);
        sprintf(tmp,"Callerid: %s\r\n",callerid);
        strcat(buf,tmp);
        strcat(buf,"MaxRetries: 1\r\n");
        strcat(buf,"RetryTime: 1\r\n");
       // sprintf(tmp,"WaitTime: %s\r\n",timeout);
        sprintf(tmp,"WaitTime: %s\r\n","30");
        strcat(buf,tmp);
        sprintf(tmp,"Context: %s\r\n",context);
        strcat(buf,tmp);
        sprintf(tmp,"Extension: %s\r\n",exten);
        strcat(buf,tmp);
        sprintf(tmp,"Extension: %s\r\n",exten);
        strcat(buf,tmp);
        fwrite((void*)buf,strlen(buf),1,fp);
        fclose(fp);
        return 0;
}

二、配置Asterisk

1、编译安装

make && make install

2、添加拨号方案

在文件/etc/asterisk/extension.conf中加入以下代码：

[DLPN_MeetingWithOutRecord]
exten =>_63XX,1,Answer()
exten =>_63XX,n,MeetMe(${EXTEN},Mw,1234)
exten =>_63XX,n,Hangup()

三、AMI调用测试（Python）：

#! /usr/bin/python

import socket

def strLogin(usr,pwd):
        msg = "Action: login\r\n"
        msg += "Events: off\r\n"
        msg += "UserName: " + usr + "\r\n"
        msg += "Secret: " + pwd + "\r\n"        
        msg += "\r\n"
        return msg

def strCall(strNum,strCallid):
        msg = "Action: myOriginate\r\n"
        msg += "Channel: SIP/"+strNum+"\r\n"
        msg += "WaitTime: 1\r\n"
        msg += "CallerId: "+strCallid+"\r\n"
        msg += "Exten: "+strCallid+"\r\n"
        msg += "Context: DLPN_MeetingWithOutRecord\r\n"
        msg += "Priority: 1\r\n"
        msg += "\r\n"
        return msg

def strLogoff():
        return "Action: logoff\r\n\r\n"

def strHangUp(strNum):
        msg = "Action: Hangup\r\n"
        msg += "Channel: SIP/"+strNum
        return msg

def main():
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect((raw_input("IP : "), 5038))

        if not s :
                print "Connect fail!"
                return
        else : print "Connect success!"

        strNum = raw_input("Input number to dail:")
        strCallerId = raw_input("Input caller id :")
        msg = ""
        msg += strLogin(raw_input("username :"),raw_input("password"))
        msg += strCall(strNum,strCallerId)
        msg += strLogoff()

        s.send(msg)

        while True:
                data = s.recv(1024)
                if not data : break
                else :  print data

        s.close()

if __name__ == '__main__':
        main()
        #raw_input("Press Enter to continue")

好，就这些了，希望对你有帮助。