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/*
* URL Helper
* by Bertrand Baudet <bertrand_baudet@yahoo.com>
* (C) 2001, MPlayer team.
*
* TODO:
* Extract the username/password if present
*/
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "url.h"
URL_t*
url_new(char* url) {
int pos1, pos2;
URL_t* Curl;
char *ptr1, *ptr2, *ptr3;
if( url==NULL ) return NULL;
// Create the URL container
Curl = (URL_t*)malloc(sizeof(URL_t));
if( Curl==NULL ) {
printf("Memory allocation failed!\n");
return NULL;
}
// Initialisation of the URL container members
memset( Curl, 0, sizeof(URL_t) );
// Copy the url in the URL container
Curl->url = strdup(url);
if( Curl->url==NULL ) {
printf("Memory allocation failed!\n");
return NULL;
}
// extract the protocol
ptr1 = strstr(url, "://");
if( ptr1==NULL ) {
printf("Not an URL!\n");
return NULL;
}
pos1 = ptr1-url;
Curl->protocol = (char*)malloc(pos1+1);
strncpy(Curl->protocol, url, pos1);
Curl->protocol[pos1] = '\0';
// look if the port is given
ptr2 = strstr(ptr1+3, ":");
// If the : is after the first / it isn't the port
ptr3 = strstr(ptr1+3, "/");
if(ptr3 && ptr3 - ptr2 < 0) ptr2 = NULL;
if( ptr2==NULL ) {
// No port is given
// Look if a path is given
ptr2 = strstr(ptr1+3, "/");
if( ptr2==NULL ) {
// No path/filename
// So we have an URL like http://www.hostname.com
pos2 = strlen(url);
} else {
// We have an URL like http://www.hostname.com/file.txt
pos2 = ptr2-url;
}
} else {
// We have an URL beginning like http://www.hostname.com:1212
// Get the port number
Curl->port = atoi(ptr2+1);
pos2 = ptr2-url;
}
// copy the hostname in the URL container
Curl->hostname = (char*)malloc(pos2-pos1-3+1);
if( Curl->hostname==NULL ) {
printf("Memory allocation failed!\n");
return NULL;
}
strncpy(Curl->hostname, ptr1+3, pos2-pos1-3);
Curl->hostname[pos2-pos1-3] = '\0';
// Look if a path is given
ptr2 = strstr(ptr1+3, "/");
if( ptr2!=NULL ) {
// A path/filename is given
// check if it's not a trailing '/'
if( strlen(ptr2)>1 ) {
// copy the path/filename in the URL container
Curl->file = strdup(ptr2);
if( Curl->file==NULL ) {
printf("Memory allocation failed!\n");
return NULL;
}
}
}
// Check if a filenme was given or set, else set it with '/'
if( Curl->file==NULL ) {
Curl->file = (char*)malloc(2);
if( Curl->file==NULL ) {
printf("Memory allocation failed!\n");
return NULL;
}
strcpy(Curl->file, "/");
}
return Curl;
}
void
url_free(URL_t* url) {
if(!url) return;
if(url->url) free(url->url);
if(url->protocol) free(url->protocol);
if(url->hostname) free(url->hostname);
if(url->file) free(url->file);
if(url->username) free(url->username);
if(url->password) free(url->password);
free(url);
}
/* Replace escape sequences in an URL (or a part of an URL) */
/* works like strcpy(), but without return argument */
/* unescape_url_string comes from ASFRecorder */
void
url_unescape_string(char *outbuf, char *inbuf)
{
unsigned char c;
do {
c = *inbuf++;
if (c == '%') {
unsigned char c1 = *inbuf++;
unsigned char c2 = *inbuf++;
if ( ((c1>='0' && c1<='9') || (c1>='A' && c1<='F')) &&
((c2>='0' && c2<='9') || (c2>='A' && c2<='F')) ) {
if (c1>='0' && c1<='9') c1-='0';
else c1-='A';
if (c2>='0' && c2<='9') c2-='0';
else c2-='A';
c = (c1<<4) + c2;
}
}
*outbuf++ = c;
} while (c != '\0');
}
/* Replace specific characters in the URL string by an escape sequence */
/* works like strcpy(), but without return argument */
/* escape_url_string comes from ASFRecorder */
void
url_escape_string(char *outbuf, char *inbuf) {
unsigned char c;
do {
c = *inbuf++;
if( (c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z') ||
(c >= '0' && c <= '9') ||
(c >= 0x7f) || /* fareast languages(Chinese, Korean, Japanese) */
c=='-' || c=='_' || c=='.' || c=='!' || c=='~' || /* mark characters */
c=='*' || c=='\'' || c=='(' || c==')' || c=='%' || /* do not touch escape character */
c==';' || c=='/' || c=='?' || c==':' || c=='@' || /* reserved characters */
c=='&' || c=='=' || c=='+' || c=='$' || c==',' || /* see RFC 2396 */
c=='\0' ) {
*outbuf++ = c;
} else {
/* all others will be escaped */
unsigned char c1 = ((c & 0xf0) >> 4);
unsigned char c2 = (c & 0x0f);
if (c1 < 10) c1+='0';
else c1+='A';
if (c2 < 10) c2+='0';
else c2+='A';
*outbuf++ = '%';
*outbuf++ = c1;
*outbuf++ = c2;
}
} while (c != '\0');
}
#ifdef __URL_DEBUG
void
url_debug(URL_t *url) {
if( url==NULL ) {
printf("URL pointer NULL\n");
return;
}
if( url->url!=NULL ) {
printf("url=%s\n", url->url );
}
if( url->protocol!=NULL ) {
printf("protocol=%s\n", url->protocol );
}
if( url->hostname!=NULL ) {
printf("hostname=%s\n", url->hostname );
}
printf("port=%d\n", url->port );
if( url->file!=NULL ) {
printf("file=%s\n", url->file );
}
if( url->username!=NULL ) {
printf("username=%s\n", url->username );
}
if( url->password!=NULL ) {
printf("password=%s\n", url->password );
}
}
#endif //__URL_DEBUG
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