__declspec(dllexport) void download (HWND parent,
int string_size,
char *variables,
nsis_stack_t **stacktop)
{
char buf[1024];
char url[1024];
char filename[1024];
static char proxy[1024];
BOOL bSuccess=FALSE;
int timeout_ms=30000;
int getieproxy=1;
int manualproxy=0;
int translation_version;
char *error=NULL;
// translation version 2 & 1
static char szDownloading[1024]; // "Downloading %s"
static char szConnecting[1024]; // "Connecting ..."
static char szSecond[1024]; // " (1 second remaining)" for v2
// "second" for v1
static char szMinute[1024]; // " (1 minute remaining)" for v2
// "minute" for v1
static char szHour[1024]; // " (1 hour remaining)" for v2
// "hour" for v1
static char szProgress[1024]; // "%skB (%d%%) of %skB at %u.%01ukB/s" for v2
// "%dkB (%d%%) of %dkB at %d.%01dkB/s" for v1
// translation version 2 only
static char szSeconds[1024]; // " (%u seconds remaining)"
static char szMinutes[1024]; // " (%u minutes remaining)"
static char szHours[1024]; // " (%u hours remaining)"
// translation version 1 only
static char szPlural[1024]; // "s";
static char szRemaining[1024]; // " (%d %s%s remaining)";
EXDLL_INIT();
popstring(url);
if (!lstrcmpi(url, "/TRANSLATE2")) {
popstring(szDownloading);
popstring(szConnecting);
popstring(szSecond);
popstring(szMinute);
popstring(szHour);
popstring(szSeconds);
popstring(szMinutes);
popstring(szHours);
popstring(szProgress);
popstring(url);
translation_version=2;
} else if (!lstrcmpi(url, "/TRANSLATE")) {
popstring(szDownloading);
popstring(szConnecting);
popstring(szSecond);
popstring(szMinute);
popstring(szHour);
popstring(szPlural);
popstring(szProgress);
popstring(szRemaining);
popstring(url);
translation_version=1;
} else {
lstrcpy(szDownloading, "Downloading %s");
lstrcpy(szConnecting, "Connecting ...");
lstrcpy(szSecond, " (1 second remaining)");
lstrcpy(szMinute, " (1 minute remaining)");
lstrcpy(szHour, " (1 hour remaining)");
lstrcpy(szSeconds, " (%u seconds remaining)");
lstrcpy(szMinutes, " (%u minutes remaining)");
lstrcpy(szHours, " (%u hours remaining)");
lstrcpy(szProgress, "%skB (%d%%) of %skB at %u.%01ukB/s");
translation_version=2;
}
lstrcpyn(buf, url, 10);
if (!lstrcmpi(buf, "/TIMEOUT=")) {
timeout_ms=my_atoi(url+9);
popstring(url);
}
if (!lstrcmpi(url, "/PROXY")) {
getieproxy=0;
manualproxy=1;
popstring(proxy);
popstring(url);
}
if (!lstrcmpi(url, "/NOIEPROXY")) {
getieproxy=0;
popstring(url);
}
popstring(filename);
HANDLE hFile = CreateFile(filename,GENERIC_WRITE,FILE_SHARE_READ,NULL,CREATE_ALWAYS,0,NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
wsprintf(buf, "Unable to open %s", filename);
error = buf;
}
else
{
if (parent)
{
uMsgCreate = RegisterWindowMessage("nsisdl create");
lpWndProcOld = (void *)SetWindowLong(parent,GWL_WNDPROC,(long)ParentWndProc);
SendMessage(parent, uMsgCreate, TRUE, (LPARAM) parent);
// set initial text
char *p = filename;
while (*p) p++;
while (*p != '\\' && p != filename) p = CharPrev(filename, p);
wsprintf(buf, szDownloading, p != filename ? p + 1 : p);
SetDlgItemText(childwnd, 1006, buf);
SetWindowText(g_hwndStatic, szConnecting);
}
{
WSADATA wsaData;
WSAStartup(MAKEWORD(1, 1), &wsaData);
JNL_HTTPGet *get = 0;
static char main_buf[8192];
char *buf=main_buf;
char *p=NULL;
HKEY hKey;
if (getieproxy && RegOpenKeyEx(HKEY_CURRENT_USER,"Software\\Microsoft\\Windows\\CurrentVersion\\Internet Settings",0,KEY_READ,&hKey) == ERROR_SUCCESS)
{
DWORD l = 4;
DWORD t;
DWORD v;
if (RegQueryValueEx(hKey,"ProxyEnable",NULL,&t,(unsigned char *)&v,&l) == ERROR_SUCCESS && t == REG_DWORD && v)
{
l=8192;
if (RegQueryValueEx(hKey,"ProxyServer",NULL,&t,(unsigned char *)buf,&l ) == ERROR_SUCCESS && t == REG_SZ)
{
p=strstr(buf,"http=");
if (!p) p=buf;
else {
p+=5;
}
char *tp=strstr(p,";");
if (tp) *tp=0;
char *p2=strstr(p,"=");
if (p2) p=0; // we found the wrong proxy
}
}
buf[8192-1]=0;
RegCloseKey(hKey);
}
if (manualproxy == 1) {
p = proxy;
}
DWORD start_time=GetTickCount();
get=new JNL_HTTPGet(JNL_CONNECTION_AUTODNS,16384,(p&&p[0])?p:NULL);
int st;
int has_printed_headers = 0;
__int64 cl = 0;
int len;
__int64 sofar = 0;
DWORD last_recv_time=start_time;
get->addheader ("User-Agent: NSISDL/1.2 (Mozilla)");
get->addheader ("Accept: */*");
get->connect (url);
while (1) {
if (g_cancelled)
error = "cancel";
if (error)
{
if (parent)
{
SendMessage(parent, uMsgCreate, FALSE, (LPARAM) parent);
SetWindowLong(parent, GWL_WNDPROC, (long)lpWndProcOld);
}
break;
}
st = get->run ();
if (st == -1) {
lstrcpyn(url, get->geterrorstr(), sizeof(url));
error = url;
} else if (st == 1) {
if (sofar < cl || get->get_status () != 2)
error="download incomplete";
else
{
bSuccess=TRUE;
error = "success";
}
} else {
if (get->get_status () == 0) {
// progressFunc ("Connecting ...", 0);
if (last_recv_time+timeout_ms < GetTickCount())
error = "Timed out on connecting.";
else
Sleep(10); // don't busy-loop while connecting
} else if (get->get_status () == 1) {
progress_callback("Reading headers", 0);
if (last_recv_time+timeout_ms < GetTickCount())
error = "Timed out on getting headers.";
else
Sleep(10); // don't busy-loop while reading headers
} else if (get->get_status () == 2) {
if (! has_printed_headers) {
has_printed_headers = 1;
last_recv_time=GetTickCount();
cl = get->content_length ();
if (cl == 0)
error = "Server did not specify content length.";
else if (g_hwndProgressBar) {
SendMessage(g_hwndProgressBar, PBM_SETRANGE, 0, MAKELPARAM(0, 30000));
g_file_size = cl;
}
}
int data_downloaded = 0;
while ((len = get->bytes_available ()) > 0) {
data_downloaded++;
if (len > 8192)
len = 8192;
len = get->get_bytes (buf, len);
if (len > 0) {
last_recv_time=GetTickCount();
DWORD dw;
WriteFile(hFile,buf,len,&dw,NULL);
sofar += len;
int time_sofar=(GetTickCount()-start_time)/1000;
int bps = (int)(sofar/(time_sofar?time_sofar:1));
int remain = MulDiv64(time_sofar, cl, sofar) - time_sofar;
if (translation_version == 2) {
char *rtext=remain==1?szSecond:szSeconds;;
if (remain >= 60)
{
remain/=60;
rtext=remain==1?szMinute:szMinutes;
if (remain >= 60)
{
remain/=60;
rtext=remain==1?szHour:szHours;
}
}
char sofar_str[128];
char cl_str[128];
myitoa64(sofar/1024, sofar_str);
myitoa64(cl/1024, cl_str);
wsprintf (buf,
szProgress, //%skB (%d%%) of %skB @ %u.%01ukB/s
sofar_str,
MulDiv64(100, sofar, cl),
cl_str,
bps/1024,((bps*10)/1024)%10
);
if (remain) wsprintf(buf+lstrlen(buf),rtext,
remain
);
} else if (translation_version == 1) {
char *rtext=szSecond;
if (remain >= 60)
{
remain/=60;
rtext=szMinute;
if (remain >= 60)
{
remain/=60;
rtext=szHour;
}
}
wsprintf (buf,
szProgress, //%dkB (%d%%) of %dkB @ %d.%01dkB/s
int(sofar/1024),
MulDiv64(100, sofar, cl),
int(cl/1024),
bps/1024,((bps*10)/1024)%10
);
if (remain) wsprintf(buf+lstrlen(buf),szRemaining,
remain,
rtext,
remain==1?"":szPlural
);
}
progress_callback(buf, sofar);
} else {
if (sofar < cl)
error = "Server aborted.";
}
}
if (GetTickCount() > last_recv_time+timeout_ms)
{
if (sofar != cl)
{
error = "Downloading timed out.";
}
else
{
// workaround for bug #1713562
// buggy servers that wait for the client to close the connection.
// another solution would be manually stopping when cl == sofar,
// but then buggy servers that return wrong content-length will fail.
bSuccess = TRUE;
error = "success";
}
}
else if (!data_downloaded)
Sleep(10);
} else {
error = "Bad response status.";
}
}
}
// Clean up the connection then release winsock
if (get) delete get;
WSACleanup();
}
CloseHandle(hFile);
}
if (g_cancelled || !bSuccess) {
DeleteFile(filename);
}
pushstring(error);
}