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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include <string.h>
#include <unistd.h>
#include <vector>
#include "log.h"
#include "utils.h"
#include "defines.h"
#include "http_request_t.h"
#include "http_bundle.h"
#include "http_server.h"
http_server::http_server(int fd_in) : fd(fd_in), request_type(static_cast<http_request_t>(-1))
{
request_data = reinterpret_cast<unsigned char *>(malloc(HTTP_SERVER_READ_SIZE + 1));
request_data_size = 0;
request_type = HR_FAIL;
char *headers_end = NULL;
bool crlf = true;
do
{
int rc = read(fd_in, &request_data[request_data_size], HTTP_SERVER_READ_SIZE);
if (rc == -1 || rc == 0)
{
if (rc == -1 && errno == EINTR)
continue;
dolog(LOG_INFO, "HTTP: short read");
break;
}
request_data_size += rc;
request_data = reinterpret_cast<unsigned char *>(realloc(request_data, request_data_size + HTTP_SERVER_READ_SIZE + 1));
request_data[request_data_size] = 0x00;
headers_end = strstr(reinterpret_cast<char *>(request_data), "\r\n\r\n");
if (!headers_end)
{
headers_end = strstr(reinterpret_cast<char *>(request_data), "\n\n");
if (headers_end)
crlf = false;
}
}
while(headers_end == NULL);
if (headers_end)
{
// get headers from request
*headers_end = 0x00;
const char *line_end = crlf ? "\r\n" : "\n";
char **headers = NULL;
int n_headers = 0;
split_string(reinterpret_cast<char *>(request_data), line_end, &headers, &n_headers);
for(int index=0; index<n_headers; index++)
request_headers.push_back(headers[index]);
// set request_type for GET/POST
char **request_parts = NULL;
int n_request_parts = 0;
split_string(headers[0], " ", &request_parts, &n_request_parts);
if (n_request_parts >= 1)
{
if (strcmp(request_parts[0], "GET") == 0)
request_type = HR_GET;
else if (strcmp(request_parts[0], "POST") == 0)
request_type = HR_POST;
}
if (n_request_parts >= 2)
request_url = request_parts[1];
for(int index=0; index<n_request_parts; index++)
free(request_parts[index]);
free(request_parts);
for(int index=0; index<n_headers; index++)
free(headers[index]);
free(headers);
// memmove read data (if any) to front
int headers_size = int(headers_end - reinterpret_cast<char *>(request_data)) + (crlf ? 4 : 2);
int bytes_left = request_data_size - headers_size;
if (bytes_left)
{
memmove(request_data, &request_data[headers_size], bytes_left);
request_data_size -= headers_size;
}
else
{
request_data_size = 0;
}
}
}
http_server::~http_server()
{
free(request_data);
}
http_request_t http_server::get_request_type()
{
return request_type;
}
http_bundle * http_server::get_request()
{
return new http_bundle(request_headers, request_data, request_data_size);
}
std::string http_server::get_request_url()
{
return request_url;
}
bool http_server::send(const char *what)
{
int len = strlen(what);
// printf("> %s", what);
return send((unsigned char *)what, len);
}
bool http_server::send(unsigned char *p, int len)
{
if (WRITE_TO(fd, p, len, DEFAULT_COMM_TO) != len)
return false;
return true;
}
void http_server::send_response(int status_code, std::vector<std::string> *headers, http_bundle *response)
{
headers -> insert(headers -> begin(), format("HTTP/1.0 %d", status_code));
headers -> push_back("Expires: Fri, 09 Nov 2015 14:55:30 GMT");
headers -> push_back("Cache-Control: no-cache");
headers -> push_back("Pragma: no-cache");
headers -> push_back(format("Content-Length: %d", response -> get_data_len()));
bool ok = true;
for(unsigned int index=0; index<headers -> size() && ok; index++)
ok = send((headers -> at(index) + "\r\n").c_str());
if (ok)
ok = send("\r\n");
if (ok)
ok = send(response -> get_data(), response -> get_data_len());
close(fd);
fd = -1;
}
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