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/**
* ======================== legal notice ======================
*
* File: Url.cc
* Created: 4. Juli 2012, 05
* Author: <a href="mailto:geronimo013@gmx.de">Geronimo</a>
* Project: libnetworking: classes for tcp/ip sockets and http-protocol handling
*
* CMP - compound media player
*
* is a client/server mediaplayer intended to play any media from any workstation
* without the need to export or mount shares. cmps is an easy to use backend
* with a (ready to use) HTML-interface. Additionally the backend supports
* authentication via HTTP-digest authorization.
* cmpc is a client with vdr-like osd-menues.
*
* Copyright (c) 2012 Reinhard Mantey, some rights reserved!
* published under Creative Commons by-sa
* For details see http://creativecommons.org/licenses/by-sa/3.0/
*
* The cmp project's homepage is at http://projects.vdr-developer.org/projects/cmp
*
* --------------------------------------------------------------
*/
#include <Url.h>
#include <Codec.h>
#include <util.h>
#ifdef DEBUG
#include <iostream>
#endif
#include <stdio.h>
#include <string.h>
#include <vector>
static cURLEncoder * encoder = NULL;
static cURLDecoder * decoder = NULL;
cUrl::cUrl(const char* RawURL)
: path(NULL)
{
ParseURL(RawURL);
}
cUrl::~cUrl()
{
FREE(path);
}
cURLDecoder* cUrl::Decoder(void)
{
if (!decoder) decoder = new cURLDecoder();
return decoder;
}
cURLEncoder* cUrl::Encoder(void)
{
if (!encoder) encoder = new cURLEncoder();
return encoder;
}
const char *cUrl::Parameter(const char* Name)
{
std::tr1::unordered_map<std::string, std::string>::iterator found = parameters.find(Name);
if (found != parameters.end()) return found->second.c_str();
return NULL;
}
void cUrl::SetParameter(const char* Name, const char* Value)
{
std::string name = Name;
std::string value = Value ? Value : " ";
parameters[name] = value;
}
size_t cUrl::EstimatedSize(void ) const
{
size_t rv = parameters.size() * 3;
if (path) rv += strlen(path) + 4;
ParameterMap::const_iterator pm = parameters.begin();
while (pm != parameters.end()) {
rv += pm->first.length() * 3;
rv += pm->second.length() * 3;
++pm;
}
return rv;
}
void cUrl::ParseURL(const char *URL)
{
FREE(path);
parameters.clear();
if (!URL) return;
const char *q = strchr(URL, '?'); // divider between url and querystring
// char *realURL;
// size_t l;
if (!q) q = URL + strlen(URL);
// l = q - URL;
// realURL = (char *)malloc(l + 2);
// if (!realURL) return;
// strncpy(realURL, URL, l);
// realURL[l] = 0;
path = Decoder()->Decode(URL, q - URL);
if (*q) ParseQueryString(++q);
}
void cUrl::ParseQueryString(const char* QueryString)
{
if (!(QueryString && *QueryString)) return;
const char *start, *last;
char *scratch = strdup(QueryString);
char *p, *end;
size_t srcLen = strlen(QueryString);
for (start = (const char *)scratch, end = (char *) start, last = scratch + srcLen; end && start < last; start = (const char *)++end) {
end = (char *) strchr(start, '&');
if (!end) end = (char *)start + strlen(start);
*end = 0;
p = (char *) strchr(start, '=');
if (p) {
*p++ = 0;
char *pn = p ? Decoder()->Decode(start) : NULL;
char *pv = p ? Decoder()->Decode(p) : NULL;
std::string name = pn;
std::string value = pv ? pv : " ";
parameters[name] = value;
free(pn);
free(pv);
}
else {
char *pn = Decoder()->Decode(start);
std::string name = pn;
parameters[name] = " ";
free(pn);
}
}
free(scratch);
}
char* cUrl::ToString(void) const
///< returns the address of the newly allocated buffer
{
size_t bufSize = EstimatedSize();
char *rv = (char *)malloc(bufSize);
if (!rv) return NULL;
int n = WriteBuf(rv, bufSize);
if (n < 0) {
bufSize += 128;
rv = (char *) realloc(rv, bufSize);
WriteBuf(rv, bufSize);
}
return rv;
}
int cUrl::WriteBuf(char* buf, size_t bufSize) const
///< returns the characters written. -1 as return value indicates a buffer overrun.
{
char *p, *tmp;
bool first = true;
int n = 0;
if (path) n += snprintf(buf + n, bufSize - n, "%s", path);
p = buf + n;
ParameterMap::const_iterator pm = parameters.begin();
while (pm != parameters.end()) {
tmp = Encoder()->Encode(pm->first.c_str());
if (p - buf + strlen(tmp) + 2 > bufSize)
return -1;
if (first) {
first = false;
*p++ = '?';
}
else *p++ = '&';
strcpy(p, tmp);
p += strlen(p);
FREE(tmp);
if (strcmp(pm->second.c_str(), " ")) {
tmp = Encoder()->Encode(pm->second.c_str());
if (p - buf + strlen(tmp) + 2 > bufSize)
return -1;
*p++ = '=';
strcpy(p, tmp);
p += strlen(p);
FREE(tmp);
}
++pm;
}
p += strlen(p);
return p - buf;
}
#ifdef DEBUG
void cUrl::Dump(void )
{
ParameterMap::const_iterator pm = parameters.begin();
while (pm != parameters.end()) {
std::cout << "parameter [" << pm->first << "]";
if (strcmp(pm->second.c_str(), " "))
std::cout << " has value <|" << pm->second << "|>" << std::endl;
else
std::cout << " has NO value!" << std::endl;
++pm;
}
}
#endif
void cUrl::Cleanup(void )
{
if (encoder) {
delete encoder;
encoder = NULL;
}
if (decoder) {
delete decoder;
decoder = NULL;
}
}
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