/***
2016.1.20 support Chinese utf8
2016.4.5  support wmi gen ,by zhi.qin changed
2016.06.24 modify codec prioty.
2016.07.01 modify _F1 field 
2016.07.27 add _opus for opus  _vp8 for vp8  ,extensions and webrtc
2016.09.26 add _F2 field  for EX16S MAC storage
2016.11.21  modify _F2 to _exmacaddr ,add _exdahdichan
在users_extension新增字段： _exmacaddr   (原来的_F2)  not use
在users_extension新增字段： _exdahdichan	   (原来的_F3) not use
在users_extension新增字段：_vp8
在users_extension新增字段：_opus
***/

#include<stdlib.h>
#include<stdio.h>
#include<string.h>
#include<mysql/mysql.h>
#include<mysql/mysqld_error.h>
#include<mysql/errmsg.h>

#define EXTEN_GEN_CFG "/etc/asterisk/exten_gen.ini"
#define USER_WEBRTC_CONFIG_FILE "/etc/asterisk/users_webrtc.conf" 

MYSQL conn;
MYSQL_RES *res_exten;
MYSQL_ROW exten_row;
char corr_str[20];

void connection(const char *host,const char *user,const char *password,const char *database){
	
	mysql_init(&conn);
	if(mysql_real_connect(&conn,host,user,password,database,3306,NULL,0)){
		mysql_set_character_set(&conn,"utf8");
		printf("Connection success!\n");
	}else{
		fprintf(stderr,"Connection failed!\n");
		if(mysql_errno(&conn)){
			fprintf(stderr,"Connection error %d: %s\n",mysql_errno(&conn),mysql_error(&conn));
		}
	exit -1;
	}
}
/*
*file exten_gen.ini 
*dbserverip=
*dbuser=
*dbpasswd=
*dbname=
*/

void getstring(char *buf,char *db_cfg){
	
	char str1[100],str2[100],*tmp;
	int len;
	strcpy(str1,buf);
	tmp=strchr(str1,'=');
	strcpy(str2,tmp);
	if (isspace(str2[1]))
			strcpy(str1,&str2[2]);
	else
			strcpy(str1,&str2[1]);
	len=strlen(str1);
	if(str1[len-2] == '\r')
			str1[len-2]='\0';
	else if(str1[len-1] == '\n')
			str1[len-1]='\0';
	else
			str1[len]='\0';
	//printf("str1=%s\n",str1);
	strcpy(db_cfg,str1);
}

int main(int argc, char *argv[]){

	FILE *fp,*fp_cfg;
	MYSQL_FIELD *exten_field;
	unsigned int field_count;
	unsigned int i;
	//int dahdichan_en = 0;
	char *field_name = NULL;
	char codecs[100] = {0},dahdichan[10] = {0},buffer[100] = {0};//,db_cfg[4][30];
	char *code_addr = NULL;//,*dbserverip = NULL,*dbuser = NULL,*dbpasswd = NULL,*dbname = NULL;
	char new_codecs[20][100]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
	if ((fp_cfg=fopen(EXTEN_GEN_CFG,"r"))==NULL) {
		printf("File: %s is not open ,fail.\n",EXTEN_GEN_CFG);
		return -1;
	}
	/*
	while(fgets(buffer,100,fp_cfg)){
		if(!strncasecmp(buffer,"dbserverip",10))
			getstring(buffer,db_cfg[0]);
		if(!strncasecmp(buffer,"dbuser",6))
			getstring(buffer,db_cfg[1]);
		if(!strncasecmp(buffer,"dbpasswd",8))
			getstring(buffer,db_cfg[2]);
		if(!strncasecmp(buffer,"dbname",6))
			getstring(buffer,db_cfg[3]);
	}
	*/
    char *hostname = getenv("MYSQL");
    char *username = getenv("MYSQL_USER");
    char *password = getenv("MYSQL_PASSWORD");
    char *dbname = getenv("MYSQL_DATABASE");
	connection(hostname,username,password,dbname);
	int res ;
	if(NULL != argv[1]){
		switch(*argv[1]){
			case '0':
				res	= mysql_query(&conn,"SELECT * from t_pbx_users_extension order by exten asc");
				if(res){
					fprintf(stderr,"SELECT error: %s\n",mysql_error(&conn));
					return -1;
				}else{
					res_exten = mysql_store_result(&conn);
					if(res_exten){
						printf("Recieved %lu rows\n",(unsigned long)mysql_num_rows(res_exten));
					}
					if(!(fp = fopen("/etc/asterisk/users_extension.conf","w+"))){
						printf("Creating extension config file failed,please check it.\n");
						return -1;
					}
				
					field_count = mysql_num_fields(res_exten);
					printf("field_count = %d\n",field_count);
					while(exten_row = mysql_fetch_row(res_exten)){
											
						memset(codecs,0,sizeof(codecs));
					//	dahdichan_en = 0;
					//	printf("....%s...\n",codecs[0]);
						for (i=0;i<20;i++)
						{
							memset(new_codecs[i],0,sizeof(new_codecs[i]));
						}
						//mysql_field_seek(res_exten,0);//point to the first field.
						for(i=0;i<field_count;i++){
				
							exten_field = mysql_fetch_field(res_exten);
							
							if(!strncasecmp(exten_field->name,"id",strlen(exten_field->name)))
								continue;
							
							if(!strncasecmp(exten_field->name,"createdAt",strlen(exten_field->name)))
								continue;
							
							if(!strncasecmp(exten_field->name,"updatedAt",strlen(exten_field->name)))
								continue;

							if(!strncasecmp(exten_field->name,"exten",strlen(exten_field->name))){
								
								fprintf(fp,"[%s]\n",exten_row[i]);
								continue;
							}
#if 0								
							//support EX16S
							if(!strncasecmp(exten_field->name,"_dahdichan",strlen(exten_field->name))){
								
								if (strlen(exten_row[i])  > 0 )
									strcpy(dahdichan,exten_row[i]);//save dahdi chan num
								continue;
							}
						
							if(!strncasecmp(exten_field->name,"_exmacaddr",strlen(exten_field->name))){
								if (strlen(exten_row[i]) > 15)
									dahdichan_en = 1;
								continue;
							}
#endif							
							//end support
							//add acl for extensions
							if(!strncasecmp(exten_field->name,"F1",strlen(exten_field->name))){
								if(!strncasecmp(exten_row[i],"remote",6)) {									
									fprintf(fp,"acl = remote_extensions_acl\n");	
								} else
									fprintf(fp,"acl = local_extensions_acl\n");		
								continue;
							}
								if(!strncasecmp(exten_field->name,"F2",strlen(exten_field->name)))
										continue;
								if(!strncasecmp(exten_field->name,"F3",strlen(exten_field->name)))
										continue;
								if(!strncasecmp(exten_field->name,"F4",strlen(exten_field->name)))
										continue;

								//add codecs to cfg file. 
								
								if(!strncasecmp(exten_field->name,"alaw",strlen(exten_field->name))){
										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;									
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"ulaw",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;	
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"g729",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"g726",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"g722",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"gsm",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"speex",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"opus",strlen(exten_field->name))){
									
										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}								
								if(!strncasecmp(exten_field->name,"h261",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"h263",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"h263p",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"h264",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
								if(!strncasecmp(exten_field->name,"vp8",strlen(exten_field->name))){

										if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;
										}
										else
												continue;
								}
							if(0 == strlen(exten_row[i])){
								if(!strncasecmp(exten_field->name,"secret",strlen(exten_field->name)))
								;
								else if(!strncasecmp(exten_field->name,"_vmsecret",strlen(exten_field->name)))
								;
								else continue;
							}
							field_name = exten_field->name;

						//add by zhi.qin 					
							if(!strncasecmp(exten_field->name,"mailbox",strlen(exten_field->name)))
							{
								if(0 < strlen(exten_row[i]) && !strstr(exten_row[i],"@")){
									fprintf(fp,"%s = %s@default\n",field_name,exten_row[i]);
									continue;
								}
							}//end 2016.04.05
							//printf("%s = %s\n",field_name,exten_row[i]);
							fprintf(fp,"%s = %s\n",field_name,exten_row[i]);
						}
//						printf("codecs len %d\n",strlen(codecs));
//						if(strlen(codecs) <= 4){
//							printf("something wrong happened to codecs selection.\n");
//							exit -1;
//						}
//						codecs[strlen(codecs)-1] = '\0';
//						printf("codecs = %s\n",code_addr);
						fputs("disallow = all\n",fp);
						//process new_codecs

						for (i=0;i<20;i++)
						{
							if (new_codecs[i][0] != '\0')
								if (codecs[0] != '\0' )
									strcat(codecs,",");
								code_addr = strcat(codecs,new_codecs[i]);
						}
						//printf("codecs = %s\n",code_addr);
						fprintf(fp,"allow = %s\n",code_addr);
						//if ( (dahdichan_en == 1) && (strlen(dahdichan) > 0) )
						//	fprintf(fp,"dahdichan = %s\n",dahdichan);
						fprintf(fp,"subscribemwi = no\n");//add by zhi.qin for sub mwi
						//fprintf(fp,"allow = %s\n",code_addr);
						fprintf(fp,"read = NULL\nwrite = NULL\n\n");//refuese sip exten permit access						

					}
				}
				fclose(fp);
				break;
			case '1':
						res = mysql_query(&conn,"SELECT * from t_pbx_users_webrtc order by exten asc");
						if(res){
							fprintf(stderr,"SELECT error: %s\n",mysql_error(&conn));
							return -1;
						}else{
							res_exten = mysql_store_result(&conn);

						if((fp=fopen(USER_WEBRTC_CONFIG_FILE,"w+"))==NULL)
							{printf( "cannot open %s file,please check.\n",USER_WEBRTC_CONFIG_FILE);return -1;}

						fputs("[webrtc](!)\n",fp);
						fputs("srtpcapable = yes\n",fp);
						fputs("encryption = yes\n",fp);
						fputs("avpf = yes\n",fp);
						fputs("rtcp_mux = yes\n",fp);
						fputs("force_avp = yes\n",fp);
						fputs("icesupport = yes\n",fp);
						fputs("dtlsenable = yes\n",fp);
						fputs("dtlsverify = no\n",fp);
						fputs("dtlscertfile = /etc/asterisk/keys/asterisk.pem\n",fp);
						fputs("dtlscafile = /etc/asterisk/keys/ca.crt\n",fp);
						fputs("dtlssetup = actpass\n",fp);
						fputs("transport = ws,wss\n",fp);
						fputs("videosupport = no\n\n",fp);
						fputs("rtcp_mux = yes\n\n",fp);
						
						field_count = mysql_num_fields(res_exten);
						printf("field_count = %d\n",field_count);
					
						while(exten_row = mysql_fetch_row(res_exten)){
							memset(codecs,0,sizeof(codecs));
						//	printf("....%s...\n",codecs[0]);
							//mysql_field_seek(res_exten,0);//point to the first field.
							for (i=0;i<20;i++)
							{
								memset(new_codecs[i],0,sizeof(new_codecs[i]));
							}							
							for(i=0;i<field_count;i++){
					
								exten_field = mysql_fetch_field(res_exten);
								
								if(!strncasecmp(exten_field->name,"id",strlen(exten_field->name)))
									continue;

								if(!strncasecmp(exten_field->name,"exten",strlen(exten_field->name))){
									
									fprintf(fp,"[%s](webrtc)\n",exten_row[i]);
									continue;
								}

									if(!strncasecmp(exten_field->name,"F1",strlen(exten_field->name)))
											continue;

									if(!strncasecmp(exten_field->name,"F2",strlen(exten_field->name)))
											continue;

									if(!strncasecmp(exten_field->name,"F3",strlen(exten_field->name)))
											continue;

									if(!strncasecmp(exten_field->name,"F4",strlen(exten_field->name)))
											continue;
									
									if(!strncasecmp(exten_field->name,"email",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"dahdichan",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"hasexten",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"directmedia",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"videosupport",strlen(exten_field->name)))
											continue;
							#if 0   //del 2015.11.19
									if(!strncasecmp(exten_field->name,"_transport",strlen(exten_field->name)))
											continue;
							#endif
									if(!strncasecmp(exten_field->name,"encryption",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"srtpcapable",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"deny",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"permit",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"avpf",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"force_avp",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"icesupport",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"dtlsverify",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"dtlsenable",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"dtlscertfile",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"dtlscafile",strlen(exten_field->name)))
											continue;
									if(!strncasecmp(exten_field->name,"dtlssetup",strlen(exten_field->name)))
											continue;						
										//add codecs to cfg file.
									if(!strncasecmp(exten_field->name,"alaw",strlen(exten_field->name))){
						
									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"ulaw",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"g729",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"g726",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"g722",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"gsm",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"speex",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"opus",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}									
									if(!strncasecmp(exten_field->name,"h261",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"h263",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"h263p",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"h264",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}
									if(!strncasecmp(exten_field->name,"vp8",strlen(exten_field->name))){

									if((atoi(exten_row[i]) > 0) && (atoi(exten_row[i]) < 20 )) {
											if (new_codecs[atoi(exten_row[i])][0] != '\0') { 
												code_addr = strcat(new_codecs[atoi(exten_row[i])], ",");//not null
											}											
											code_addr = strcat(new_codecs[atoi(exten_row[i])],exten_field->name);
											continue;;
											}
											else
													continue;
									}									
								if(0 == strlen(exten_row[i])){
									if(!strncasecmp(exten_field->name,"secret",strlen(exten_field->name)))
									;
									else if(!strncasecmp(exten_field->name,"vmsecret",strlen(exten_field->name)))
									;
									else continue;
								}
								field_name = exten_field->name;

								fprintf(fp,"%s = %s\n",field_name,exten_row[i]);
							}
				//						printf("codecs len %d\n",strlen(codecs));
							//if(strlen(codecs) <= 4){
							//	printf("something wrong happened to codecs selection.\n");
							//	exit -1;
							//}
							//codecs[strlen(codecs)-1] = '\0';
							for (i=0;i<20;i++)
							{
							if (new_codecs[i][0] != '\0')
								if (codecs[0] != '\0' )
									strcat(codecs,",");
								code_addr = strcat(codecs,new_codecs[i]);
							}
				//						printf("codecs = %s\n",code_addr);
							fputs("disallow = all\n",fp);
							fprintf(fp,"allow = %s\n",code_addr);
							fprintf(fp,"read = NULL\nwrite=NULL\n\n");//refuese sip exten permit access
						}
					}
				fclose(fp);
				break;				
			default:
				printf("You enter the wrong parameters.please check it\n");
				break;
			}
		fclose(fp_cfg);
		mysql_free_result(res_exten);
		mysql_close(&conn);
		return 0;
	} else {
		fclose(fp_cfg);
		mysql_free_result(res_exten);
		mysql_close(&conn);
		return 0;
	}
}