#define URL_SIZE 4000
//===================================================//
// //
// HTTP //
// //
//===================================================//
struct _http
{
dword cur_url;
dword transfer;
dword content_length;
dword content_received;
dword status_code;
dword receive_result;
dword content_pointer;
char redirect_url[4096*3];
char content_type[64];
dword get();
void hfree();
void receive();
bool handle_redirect();
dword check_content_type();
};
dword _http::get(dword _url)
{
cur_url = _url;
http_get stdcall (_url, 0, 0, #accept_language);
content_type[0] = '\0';
transfer = EAX;
return transfer;
}
void _http::hfree()
{
http_free stdcall (transfer);
transfer=0;
}
void _http::receive()
{
http_receive stdcall (transfer);
receive_result = EAX;
EDI = transfer;
if (!EAX) {
status_code = EDI.http_msg.status;
content_pointer = EDI.http_msg.content_ptr;
}
content_length = EDI.http_msg.content_length;
content_received = EDI.http_msg.content_received;
}
:bool _http::handle_redirect()
{
http_find_header_field stdcall (transfer, "location\0");
if (EAX!=0) {
ESI = EAX;
EDI = #redirect_url;
do {
$lodsb;
$stosb;
} while (AL != 0) && (AL != 13) && (AL != 10);
DSBYTE[EDI-1]='\0';
get_absolute_url(#redirect_url, cur_url);
hfree();
return #redirect_url;
}
return NULL;
}
:dword _http::check_content_type()
{
if (content_type[0]) return NULL;
http_find_header_field stdcall (transfer, "content-type\0");
if (EAX!=0) {
ESI = EAX;
EDI = #content_type;
do {
$lodsb;
$stosb;
} while (AL != 0) && (AL != 13) && (AL != 10);
DSBYTE[EDI-1]='\0';
debugln(#content_type);
return #content_type;
}
return NULL;
}
//===================================================//
// //
// DOWNLOADER //
// //
//===================================================//
enum {
STATE_NOT_STARTED,
STATE_IN_PROGRESS,
STATE_COMPLETED
};
struct DOWNLOADER : _http {
dword bufpointer, bufsize, url;
int state;
dword Start();
void Stop();
bool MonitorProgress();
};
dword DOWNLOADER::Start(dword _url)
{
url = _url;
state = STATE_IN_PROGRESS;
get(_url);
if (!transfer) Stop();
return transfer;
}
void DOWNLOADER::Stop()
{
state = STATE_NOT_STARTED;
if (transfer!=0)
{
EAX = transfer;
EAX = EAX.http_msg.content_ptr; // get pointer to data
$push EAX // save it on the stack
http_free stdcall (transfer); // abort connection
$pop EAX
free(EAX); // free data
transfer=0;
bufsize = 0;
bufpointer = free(bufpointer);
}
content_received = content_length = 0;
}
bool DOWNLOADER::MonitorProgress()
{
if (transfer <= 0) return false;
receive();
if (!content_length) content_length = content_received * 20;
if (receive_result == 0) {
if (status_code >= 300) && (status_code < 400)
{
url = handle_redirect();
Stop();
Start(url);
return false;
}
state = STATE_COMPLETED;
bufpointer = content_pointer;
bufsize = content_received;
hfree();
}
return true;
}
/*=====================================
== ==
== CHECK PATH TYPE ==
== ==
=====================================*/
:int check_is_the_adress_local(dword _in)
{
if (ESBYTE[_in]!='/') return false;
_in++;
if(!strncmp(_in,"rd/",3)) return true;
if(!strncmp(_in,"fd/",3)) return true;
if(!strncmp(_in,"hd",2)) return true;
if(!strncmp(_in,"bd",2)) return true;
if(!strncmp(_in,"cd",2)) return true;
if(!strncmp(_in,"sys/",4)) return true;
if(!strncmp(_in,"tmp/",4)) return true;
if(!strncmp(_in,"usbhd",5)) return true;
if(!strncmp(_in,"kolibrios",9)) return true;
return false;
}
:int check_is_the_url_absolute(dword _in)
{
if(!strncmp(_in,"ftp:",4)) return true;
if(!strncmp(_in,"http:",5)) return true;
if(!strncmp(_in,"https:",6)) return true;
if(!strncmp(_in,"mailto:",7)) return true;
if(!strncmp(_in,"tel:",4)) return true;
if(!strncmp(_in,"#",1)) return true;
if(!strncmp(_in,"WebView:",8)) return true;
if(check_is_the_adress_local(_in)) return true;
return false;
}
:dword get_absolute_url(dword new_URL, base_URL)
{
int i;
dword orig_URL = new_URL;
char newurl[URL_SIZE+1];
strcpy(#newurl, base_URL);
while (i=strstr(new_URL, "&")) strcpy(i+1, i+5);
if (check_is_the_url_absolute(new_URL)) return orig_URL;
IF (!strncmp(new_URL,"//", 2))
{
strcpy(#newurl, "http:");
strcat(#newurl, new_URL);
strcpy(orig_URL, #newurl);
return orig_URL;
}
IF (!strncmp(new_URL,"./", 2)) new_URL+=2;
if (ESBYTE[new_URL] == '/') //remove everything after site domain name
{
i = strchr(#newurl+8, '/');
if (i) ESBYTE[i]=0;
new_URL+=1;
}
_CUT_ST_LEVEL_MARK:
if (newurl[strrchr(#newurl, '/')-2]<>'/')
{
newurl[strrchr(#newurl, '/')] = 0x00;
}
IF (!strncmp(new_URL,"../",3))
{
new_URL+=3;
newurl[strrchr(#newurl, '/')-1] = 0x00;
goto _CUT_ST_LEVEL_MARK;
}
if (newurl[strlen(#newurl)-1]<>'/') strcat(#newurl, "/");
strcat(#newurl, new_URL);
strcpy(orig_URL, #newurl);
return orig_URL;
}