cppagi/cppagi.cpp at master · olivecoder/cppagi · GitHub

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cppagi.cpp

Robert Oliveira, 2005.02.03

olivecoder@gmail.com

#include <string>

#include <cctype>

#include <algorithm>

#include <time.h>

#include <stdarg.h>

#include <string.h>

#include "cppagi.h"

agi::agi()

{

char line[256];

int max=200;

AGI_LOG("agi constructor", AGI_INFO);

setlinebuf(stdout);

setlinebuf(stderr);

while ( cin && max-- ) {

cin.getline(line,sizeof(line)-1);

if ( strlen(line)==0 ) break;

environment.push_back(line);

}

hangup_detected=false;

clear();

}

agi::~agi()

{

AGI_LOG("agi destructor", AGI_INFO);

}

char char_toupper(char c)

{

return std::toupper(c);

}

string agi::upper(const string &s)

{

string result=s;

transform(result.begin(), result.end(), result.begin(), char_toupper);

return result;

}

void agi::log(const string& message, int verbosity, const string &file,

const string &function, int line )

{

string where, msg;

#ifdef DEBUG

char strline[16];

snprintf(strline,sizeof(strline),"%d",line);

where = file + ", ";

where += function + "(";

where += strline;

where += ")\t";

msg = where + message;

#else

msg = message;

#endif

verbose(agi::ltime() + " " + msg, verbosity);

}

agi_error agi::error( const string& msg, const string& file,

const string& function, int line)

{

agi_error newError(*this, msg, file, function, line);

return newError;

}

string agi::getEnv(const string &varname)

{

vector<string>::iterator i;

string uppervarname;

size_t p;

uppervarname = upper(varname);

for( i=environment.begin(); i!=environment.end(); i++ ) {

p = i->find(':',0);

if ( p!=string::npos && p!=0 ) {

if ( upper(i->substr(0,p))==uppervarname ) {

p++; p++;

if ( p < i->size() ) {

return i->substr( p, i->size() - p );

}

AGI_LOG("variable \""+varname+"\" not found!",AGI_WARNING);

return "";

}

string agi::ltime(time_t t)

{

tm *ptm;

char strtime[64];

if (t==0) t=time(NULL);

ptm=localtime(&t);

snprintf(strtime,sizeof(strtime),"%02d.%02d.%02d %02d:%02d:%02d",

ptm->tm_year-100,ptm->tm_mon,ptm->tm_mday,

ptm->tm_hour,ptm->tm_min,ptm->tm_sec);

return string(strtime);

}

void agi::clear(void) {

code=AGI_CODEOK;

result=0;

dtmf_buffer="";

}

int agi::exec(const string &command)

{

execCommand = command;

cout << command << endl;

return read();

}

int agi::read(void) {

char line[256];

char *next;

code = result = 0;

cin.getline(line,sizeof(line)-1);

response = line;

code = strtol(line,&next,10);

if ( next!=NULL ) {

while (*next && *next!='=') next++;

if ( *next=='=' ) next++;

result = strtol(next,&next,10);

}

// throw only on first hangup indication

if ( result == -1 && ! hangup_detected ) {

hangup_detected = true;

throw agi_hangup("Hangup on "+execCommand);

}

return result;

}

int agi::getCode(void)

{

return code;

}

int agi::getResult(void)

{

return result;

}

bool agi::isConnected(void)

{

getChannelStatus();

return (! hangup_detected);

}

string agi::getData(void) // todo: split data

{

size_t begin, end;

begin = response.find('(');

end = response.rfind(')');

if ( begin!=string::npos && end!=string::npos ) {

return response.substr(begin+1,end-begin-1);

} else {

return "";

}

bool agi::fail(void) {

return ( (code!=AGI_CODEOK) || (result==-1) );

}

void agi::verbose(const string &message, int verbosity)

{

request.str("");

request << "VERBOSE \"" << message << "\" " << verbosity;

exec(request.str());

}

void agi::answer(void)

{

exec("ANSWER");

}

void agi::play(const string &file, const string valid_digits )

{

int dtmf;

request.str("");

request << "STREAM FILE \"" << file << "\" ";

if ( valid_digits.size()==0 ) {

request << " \"\" ";

} else {

request << " \"" << valid_digits << "\" ";

}

exec(request.str());

dtmf = getResult();

if ( valid_digits.find((char)dtmf,0) != string::npos ) {

dtmf_buffer += (char)dtmf;

}

void agi::record(const string &file, const string &format, int timeout,

int silence)

{

request.str("");

request << "RECORD FILE " << file << " " << format << " 1# ";

request << timeout << " beep";

if ( silence ) {

request << " s=" << silence;

}

exec(request.str());

}

string agi::getDtmf(int length, int timeout, char terminator)

{

string digits = "";

char ch=-1;

while ( length!=0 && ch!=0 && ch!=terminator && !fail() ) {

AGI_LOG("WAIT FOR DIGIT (received: \""+digits+"\")",AGI_INFO);

if ( dtmf_buffer.size() > 0 ) {

ch = dtmf_buffer[0];

dtmf_buffer.erase(0,1);

} else {

request.str("");

request << "WAIT FOR DIGIT " << timeout;

exec(request.str());

ch = (char) result; // 0=timeout -1=fail

}

if ( ch!=0 && ch!=terminator && !fail() ) {

digits += ch;

length--;

}

return digits;

}

string agi::input(const string &prompt, int length, int timeout,

char terminator)

{

play(prompt);

return getDtmf(length, timeout, terminator);

}

char agi::menu( const string &prompt, const string &options,

const string &error, const string &retry_message, int retry)

{

char dtmf='\0';

bool success=false;

if ( dtmf_buffer.size() > 0 ) {

dtmf = getDtmf(1)[0];

success = ( options.find(dtmf,0) != string::npos );

}

if ( ! retry > 0 ) {

AGI_LOG("menu assertion (retry > 0) failed", AGI_WARNING);

}

while ( ! success && retry-- && ! fail() ) {

play(prompt);

dtmf = getDtmf(1)[0];

success = ( options.find(dtmf,0) != string::npos );

if ( ! success ) {

if ( error.size()!=0 ) {

play(error);

}

if ( retry && retry_message.size()!=0 ) {

play(retry_message);

}

if ( success ) {

return dtmf;

} else {

return 0;

}

void agi::jump(const string &context, const string &extension, int priority)

{

exec("SET CONTEXT " + context);

if ( ! fail() ) {

exec("SET EXTENSION " + extension);

if ( ! fail() ) {

request.str("");

request << "SET PRIORITY " << priority;

exec(request.str());

}

void agi::sayDigits(const string &digits)

{

exec("SAY DIGITS " + digits + " #");

}

void agi::sayNumber(const string &number)

{

exec("SAY NUMBER " + number + " #");

}

void agi::saySetsOfTen(const string &digits)

{

string number;

for (size_t i=0; i<digits.size(); i++, i++) {

number = digits.substr(i,2);

if ( number[0]=='0' && number.size()==2 ) {

sayDigits(number.substr(0,1));

sayDigits(number.substr(1,1));

} else if ( number[0]=='1' && number.size()==2 ) {

sayNumber(number);

} else if ( number[1]=='0' && number.size()==2 ) {

sayNumber(number);

} else if ( number.size()==2 ) {

sayNumber(number.substr(0,1)+"0");

play("digits/and");

sayDigits(number.substr(1,1));

} else {

sayNumber(number);

}

void agi::sayTime(string timestr)

{

timestr = upper(timestr);

if ( timestr=="NOW" ) {

time_t now;

now = time(NULL);

timestr=ctime(&now);

}

exec("SAY TIME " + timestr );

}

bool agi::hangup(int cause)

{

char cause_str[16];

snprintf(cause_str,sizeof(cause_str),"%i",cause);

setVar("PRI_CAUSE",cause_str);

return (exec("HANGUP")==1);

}

int agi::getChannelStatus(const string &channel)

{

string qryChannel;

if ( channel.size()==0 ) {

qryChannel = getEnv("agi_channel");

} else {

qryChannel = channel;

}

exec("CHANNEL STATUS "+qryChannel);

return result;

}

void agi::setCallerId(const string &cid)

{

exec("SET CALLERID "+cid);

}

void agi::setLanguage(const string &language)

{

exec("EXEC SetLanguage "+language);

}

string agi::getLanguage(void)

{

return getEnv("agi_language");

}

string agi::dbGet(const string family, const string key)

{

exec("DATABASE GET \"" + family + "\" \"" +key+ "\"");

return getData();

}

void agi::dbPut(const string family, const string key, const string value)

{

exec("DATABASE PUT \"" + family + "\" \"" +key+ "\" \""+value+"\"" );

}

void agi::dbDel(const string family, const string key)

{

exec("DATABASE DEL \"" + family + "\" \"" +key+ "\"");

}

string agi::getVar(const string &var)

{

exec("GET VARIABLE \""+var+"\"");

return getData();

}

void agi::setVar(const string &var, const string &value)

{

exec("SET VARIABLE \""+var+"\" \""+value+"\"");

}

string agi::sprintf(const std::string &fmt, ...)

{

std::string result;

char buffer[8192];

va_list ap;

va_start(ap, fmt);

memset(buffer,0,sizeof(buffer));

vsnprintf(buffer,sizeof(buffer),fmt.c_str(),ap);

va_end(ap);

result = buffer;

return result;

}

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