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/*
* Http.cpp
*
* Created on: 2014. 6. 18.
* Author: oskwon
*/
#include <string.h>
#include <sstream>
#include "Util.h"
#include "Logger.h"
#include "Http.h"
#include "UriDecoder.h"
using namespace std;
//----------------------------------------------------------------------
bool HttpHeader::parse_request(std::string header)
{
std::string line, key, value;
std::istringstream request_stream;
request_stream.str(header);
request_stream >> method;
request_stream >> path;
request_stream >> version;
std::getline(request_stream, line);
while(std::getline(request_stream, line)) {
if ((line = Util::trim(line)) != "") {
Util::split_key_value(line, ":", key, value);
key = Util::trim(key);
value = Util::trim(value);
params[key] = value;
DEBUG("add param : [%s] - [%s]", key.c_str(), value.c_str());
}
}
int idx = path.find("?");
// page
if (idx != std::string::npos) {
page = path.substr(0,idx);
std::string page_param = path.substr(idx + 1);
DEBUG("request url : [%s] - [%s]", page.c_str(), page_param.c_str());
std::istringstream request_params_stream;
request_params_stream.str(page_param);
while(std::getline(request_params_stream, line, '&')) {
if ((line = Util::trim(line)) != "") {
Util::split_key_value(line, "=", key, value);
key = Util::trim(key);
value = Util::trim(value);
page_params[key] = value;
DEBUG("add page param : [%s] - [%s]", key.c_str(), value.c_str());
}
}
if (page == "/file") {
type = HttpHeader::TRANSCODING_FILE;
}
else if (page == "/m3u") {
type = HttpHeader::M3U;
}
}
// live
else {
type = HttpHeader::TRANSCODING_LIVE;
}
return true;
}
//----------------------------------------------------------------------
static const char *http_ok = "HTTP/1.1 200 OK\r\n";
static const char *http_partial = "HTTP/1.1 206 Partial Content\r\n";
static const char *http_connection = "Connection: Close\r\n";
static const char *http_server = "Server: transtreamproxy\r\n";
static const char *http_done = "\r\n";
std::string HttpHeader::build_response(Mpeg *source)
{
std::ostringstream oss;
switch(type) {
case HttpHeader::TRANSCODING_FILE: {
std::string range = params["Range"];
off_t seek_offset = 0, content_length = 0;
if((range.length() > 7) && (range.substr(0, 6) == "bytes=")) {
range = range.substr(6);
if(range.find('-') == (range.length() - 1)) {
seek_offset = Util::strtollu(range);
}
}
content_length = source->stream_length - seek_offset;
if (seek_offset > 0) {
content_length += 1;
oss << http_partial;
}
else {
oss << http_ok;
}
oss << http_connection;
oss << "Content-Type: video/mpeg\r\n";
oss << http_server;
oss << "Accept-Ranges: bytes\r\n";
oss << "Content-Length: " << Util::ultostr(content_length) << "\r\n";
oss << "Content-Range: bytes " <<
Util::ultostr(seek_offset) << "-" <<
Util::ultostr(source->stream_length - 1) << "/" <<
Util::ultostr(source->stream_length) << "\r\n";
oss << http_done;
}
break;
case HttpHeader::TRANSCODING_LIVE: {
oss << http_ok;
oss << http_connection;
oss << "Content-Type: video/mpeg\r\n";
oss << http_server;
oss << http_done;
}
break;
case HttpHeader::M3U: {
std::ostringstream m3u_oss;
m3u_oss << "#EXTM3U\n";
m3u_oss << "#EXTVLCOPT--http-reconnect=true\n";
m3u_oss << "http://" << params["Host"] << "/file?file=" << page_params["file"];
if (page_params["position"] != "") {
m3u_oss << "&position=" << page_params["position"];
}
m3u_oss << "\n";
m3u_oss << http_done;
std::string m3u_content = m3u_oss.str();
oss << http_partial;
oss << "Content-Type: audio/x-mpegurl\r\n";
oss << "Accept-Ranges: bytes\r\n";
oss << http_connection;
oss << http_server;
oss << "Content-Length: " << Util::ultostr(m3u_content.length()) << "\r\n";
oss << "Content-Range: bytes 0-" <<
Util::ultostr(m3u_content.length() - 1) << "/" <<
Util::ultostr(m3u_content.length()) << "\r\n";
oss << http_done;
oss << m3u_content;
}
break;
default: return "";
}
return oss.str();
}
//----------------------------------------------------------------------
std::string HttpHeader::read_request()
{
std::string request = "";
while (true) {
char buffer[128] = {0};
fgets(buffer, 127, stdin);
request += buffer;
if(request.find("\r\n\r\n") != string::npos)
break;
}
return request;
}
//----------------------------------------------------------------------
std::string HttpUtil::http_error(int errcode, std::string errmsg)
{
std::ostringstream oss;
oss << "HTTP/1.1 " << Util::ultostr(errcode) << " " << errmsg << "\r\n";
oss << "Content-Type: text/html\r\n";
oss << "Connection: close\r\n";
oss << "Accept-Ranges: bytes\r\n";
oss << "\r\n";
return oss.str();
}
//----------------------------------------------------------------------
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