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NSISdl
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nsisdl.cpp
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2004-02-01
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/*
NSIS-DL 1.3 - http downloading DLL for NSIS
Copyright (C) 2001-2002 Yaroslav Faybishenko & Justin Frankel
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include <windows.h>
#include <stdio.h>
#include <commctrl.h>
#include "netinc.h"
#include "util.h"
#include "httpget.h"
#include "../exdll/exdll.h"
void *operator new( unsigned int num_bytes )
{
return GlobalAlloc(GPTR,num_bytes);
}
void operator delete( void *p ) { if (p) GlobalFree(p); }
HMODULE hModule;
HWND g_hwndProgressBar;
HWND g_hwndStatic;
static int g_cancelled;
static void *lpWndProcOld;
static UINT uMsgCreate;
HWND childwnd;
HWND hwndL;
HWND hwndB;
static LRESULT CALLBACK ParentWndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
if (uMsgCreate && message == uMsgCreate)
{
static HWND hwndPrevFocus;
static BOOL fCancelDisabled;
if (wParam)
{
childwnd = FindWindowEx((HWND) lParam, NULL, "#32770", NULL);
hwndL = GetDlgItem(childwnd, 1016);
hwndB = GetDlgItem(childwnd, 1027);
HWND hwndP = GetDlgItem(childwnd, 1004);
HWND hwndS = GetDlgItem(childwnd, 1006);
if (childwnd && hwndP && hwndS)
{
// Where to restore focus to before we disable the cancel button
hwndPrevFocus = GetFocus();
if (!hwndPrevFocus)
hwndPrevFocus = hwndP;
if (IsWindowVisible(hwndL))
ShowWindow(hwndL, SW_HIDE);
else
hwndL = NULL;
if (IsWindowVisible(hwndB))
ShowWindow(hwndB, SW_HIDE);
else
hwndB = NULL;
RECT wndRect, ctlRect;
GetClientRect(childwnd, &wndRect);
GetWindowRect(hwndS, &ctlRect);
HWND s = g_hwndStatic = CreateWindow(
"STATIC",
"",
WS_CHILD | WS_CLIPSIBLINGS | SS_CENTER,
0,
wndRect.bottom / 2 - (ctlRect.bottom - ctlRect.top) / 2,
wndRect.right,
ctlRect.bottom - ctlRect.top,
childwnd,
NULL,
hModule,
NULL
);
DWORD dwStyle = WS_CHILD | WS_CLIPSIBLINGS;
dwStyle |= GetWindowLong(hwndP, GWL_STYLE) & PBS_SMOOTH;
GetWindowRect(hwndP, &ctlRect);
HWND pb = g_hwndProgressBar = CreateWindow(
"msctls_progress32",
"",
dwStyle,
0,
wndRect.bottom / 2 + (ctlRect.bottom - ctlRect.top) / 2,
wndRect.right,
ctlRect.bottom - ctlRect.top,
childwnd,
NULL,
hModule,
NULL
);
long c;
c = SendMessage(hwndP, PBM_SETBARCOLOR, 0, 0);
SendMessage(hwndP, PBM_SETBARCOLOR, 0, c);
SendMessage(pb, PBM_SETBARCOLOR, 0, c);
c = SendMessage(hwndP, PBM_SETBKCOLOR, 0, 0);
SendMessage(hwndP, PBM_SETBKCOLOR, 0, c);
SendMessage(pb, PBM_SETBKCOLOR, 0, c);
// set font
long hFont = SendMessage((HWND) lParam, WM_GETFONT, 0, 0);
SendMessage(pb, WM_SETFONT, hFont, 0);
SendMessage(s, WM_SETFONT, hFont, 0);
ShowWindow(pb, SW_SHOWNA);
ShowWindow(s, SW_SHOWNA);
fCancelDisabled = EnableWindow(GetDlgItem(hwnd, IDCANCEL), TRUE);
SendMessage(hwnd, WM_NEXTDLGCTL, (WPARAM)GetDlgItem(hwnd, IDCANCEL), TRUE);
}
else
childwnd = NULL;
}
else if (childwnd)
{
if (hwndB)
{
ShowWindow(hwndB, SW_SHOWNA);
hwndB = NULL;
}
if (hwndL)
{
ShowWindow(hwndL, SW_SHOWNA);
hwndL = NULL;
}
// Prevent wierd stuff happening if the cancel button happens to be
// pressed at the moment we are finishing and restore the previous focus
// and cancel button states
SendMessage(hwnd, WM_NEXTDLGCTL, (WPARAM)hwndPrevFocus, TRUE);
SendMessage(GetDlgItem(hwnd, IDCANCEL), BM_SETSTATE, FALSE, 0);
if (fCancelDisabled)
EnableWindow(GetDlgItem(hwnd, IDCANCEL), FALSE);
if (g_hwndStatic)
{
DestroyWindow(g_hwndStatic);
g_hwndStatic = NULL;
}
if (g_hwndProgressBar)
{
DestroyWindow(g_hwndProgressBar);
g_hwndProgressBar = NULL;
}
childwnd = NULL;
}
}
else if (message == WM_COMMAND && LOWORD(wParam) == IDCANCEL)
{
g_cancelled = 1;
}
else
{
return CallWindowProc(
(WNDPROC) lpWndProcOld,
hwnd,
message,
wParam,
lParam
);
}
return 0;
}
BOOL APIENTRY DllMain(HINSTANCE _hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
{
hModule = _hModule;
return TRUE;
}
static int g_file_size;
static DWORD g_dwLastTick = 0;
void progress_callback(char *msg, int read_bytes)
{
// flicker reduction by A. Schiffler
DWORD dwLastTick = g_dwLastTick;
DWORD dwThisTick = GetTickCount();
if (childwnd)
{
if (dwThisTick - dwLastTick > 500)
{
SetWindowText(g_hwndStatic, msg);
dwLastTick = dwThisTick;
}
if (g_file_size)
SendMessage(g_hwndProgressBar, PBM_SETPOS, (WPARAM) MulDiv(read_bytes, 30000, g_file_size), 0);
g_dwLastTick = dwLastTick;
}
}
extern char *_strstr(char *i, char *s);
#define strstr _strstr
extern "C"
{
__declspec(dllexport) void download (HWND parent,
int string_size,
char *variables,
stack_t **stacktop)
{
char buf[1024];
char url[1024];
char filename[1024];
BOOL bSuccess=FALSE;
int timeout_ms=30000;
char *error=NULL;
static char szDownloading[1024];//= "Downloading %s";
static char szConnecting[1024];//= "Connecting ...";
static char szSecond[1024];//= "second";
static char szMinute[1024];//= "minute";
static char szHour[1024];//= "hour";
static char szPlural[1024];//= "s";
static char szProgress[1024];//= "%dkB (%d%%) of %dkB @ %d.%01dkB/s";
static char szRemaining[1024];//= " (%d %s%s remaining)";
EXDLL_INIT();
popstring(url);
if (!lstrcmpi(url, "/TRANSLATE")) {
popstring(szDownloading);
popstring(szConnecting);
popstring(szSecond);
popstring(szMinute);
popstring(szHour);
popstring(szPlural);
popstring(szProgress);
popstring(szRemaining);
popstring(url);
}
else {
lstrcpy(szDownloading, "Downloading %s");
lstrcpy(szConnecting, "Connecting ...");
lstrcpy(szSecond, "second");
lstrcpy(szMinute, "minute");
lstrcpy(szHour, "hour");
lstrcpy(szPlural, "s");
lstrcpy(szProgress, "%dkB (%d%%) of %dkB @ %d.%01dkB/s");
lstrcpy(szRemaining, " (%d %s%s remaining)");
}
lstrcpyn(buf, url, 10);
if (!lstrcmpi(buf, "/TIMEOUT=")) {
timeout_ms=my_atoi(url+9);
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 (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);
}
DWORD start_time=GetTickCount();
get=new JNL_HTTPGet(JNL_CONNECTION_AUTODNS,16384,(p&&p[0])?p:NULL);
int st;
int has_printed_headers = 0;
int cl;
int len;
int 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;
}
Sleep(25);
st = get->run ();
if (st == -1) {
lstrcpyn(url, get->geterrorstr(), sizeof(url));
error = url;
} else if (st == 1) {
if (sofar < cl)
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 if (get->get_status () == 1) {
progress_callback("Reading headers", 0);
if (last_recv_time+timeout_ms < GetTickCount())
error = "Timed out on getting 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;
}
}
while ((len = get->bytes_available ()) > 0) {
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=sofar/(time_sofar?time_sofar:1);
int remain=MulDiv(time_sofar,cl,sofar) - time_sofar;
char *rtext=szSecond;
if (remain >= 60)
{
remain/=60;
rtext=szMinute;
if (remain >= 60)
{
remain/=60;
rtext=szHour;
}
}
wsprintf (buf,
szProgress,
sofar/1024,
MulDiv(100,sofar,cl),
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)
error = "Downloading timed out.";
} 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);
}
__declspec(dllexport) void download_quiet(HWND parent,
int stringsize,
char *variables,
stack_t **stacktop)
{
g_hwndProgressBar=0;
download(NULL,stringsize,variables,stacktop);
}
} //extern "C"