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/*
Http.cpp
part of the libcurl HTTP class written for C++
based partially on http://www.zedwood.com/article/125/cpp-libcurl-static-class, with many modifications made
*/
#include "Http.h"
using namespace std;
string Http::last_url;
string Http::current_url;
bool Http::use_proxy;
string Http::proxy_ip;
long Http::proxy_port;
long Http::remote_port;
string Http::get(const string &url){
return request(url, "", false, "");
}
string Http::get(const string &url, string referer){
return request(url, referer, false, "");
}
string Http::post(const string &url, map<string, string> params){
string postdata = build_param_string(params);
return request(url, "", true, postdata);
}
string Http::post(const string &url, map<string, string> params, string referer){
string postdata = build_param_string(params);
return request(url, referer, true, postdata);
}
string Http::get_current_url(){
return current_url;
}
string Http::get_last_url(){
return last_url;
}
void Http::set_proxy(string ip, long port){
use_proxy = true;
proxy_ip = ip;
proxy_port = port;
}
void Http::clear_proxy(){
use_proxy = false;
}
void Http::set_remote_port(long port){
remote_port = port;
}
string Http::request(const string &url, string referer, bool post, const string ¶ms){
static string buffer = "";
static char error_buffer[CURL_ERROR_SIZE];
error_buffer[0] = 0;
CURL *curl;
CURLcode result;
curl = curl_easy_init();
if(curl){
curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, error_buffer);
curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
curl_easy_setopt(curl, CURLOPT_HEADER, 0);
curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
curl_easy_setopt(curl, CURLOPT_AUTOREFERER, 1);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, Http::writer);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, &(buffer));
curl_easy_setopt(curl, CURLOPT_COOKIEFILE, ".cookies.cj");
curl_easy_setopt(curl, CURLOPT_COOKIEJAR, ".cookies.cj");
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2);
curl_easy_setopt(curl, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)");
if(post){
curl_easy_setopt(curl, CURLOPT_POST, 1);
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, params.c_str());
}
if(referer.length()){
curl_easy_setopt(curl, CURLOPT_REFERER, referer.c_str());
}
if(use_proxy){
curl_easy_setopt(curl, CURLOPT_PROXY, proxy_ip.c_str());
if(proxy_port){
curl_easy_setopt(curl, CURLOPT_PROXYPORT, proxy_port);
}
}
if(remote_port){
curl_easy_setopt(curl, CURLOPT_PORT, remote_port);
}
result = curl_easy_perform(curl);
curl_easy_cleanup(curl);
if(result == CURLE_OK){
return buffer;
}
else{
return "error";
}
}
return "error";
}
int Http::writer(char *data, size_t size, size_t nmemb, string *buffer){
int result = 0;
if(buffer != NULL){
buffer->append(data, size * nmemb);
result = size * nmemb;
}
return result;
}
string Http::urlencode(const string &str){
string encoded = "";
int max = str.length();
for(int i = 0; i < max; i++){
if(
(48 <= str[i] && str[i] <= 57) ||
(65 <= str[i] && str[i] <= 90) ||
(97 <= str[i] && str[i] <= 122) ||
(str[i] == '~' || str[i] == '!' || str[i] == '*' || str[i] == '(' || str[i] == ')' || str[i] == '\'')
){
encoded.append(&str[i], 1);
}
else{
encoded.append("%");
encoded.append(dechex(str[i]));
}
}
return encoded;
}
string Http::dechex(char dec){
char dig1 = (dec&0xF0)>>4;
char dig2 = (dec&0x0F);
if ( 0<= dig1 && dig1<= 9) dig1+=48; //0,48inascii
if (10<= dig1 && dig1<=15) dig1+=97-10; //a,97inascii
if ( 0<= dig2 && dig2<= 9) dig2+=48;
if (10<= dig2 && dig2<=15) dig2+=97-10;
string r;
r.append( &dig1, 1);
r.append( &dig2, 1);
return r;
}
string Http::build_param_string(map<string, string> params){
string param_string = "";
for(map<string, string>::iterator it = params.begin(); it != params.end(); it++){
param_string += it->first + "=" + urlencode(it->second) + "&";
}
param_string = param_string.substr(0, param_string.length() - 1);
return param_string;
}
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