+++ /dev/null
-/*
- * winmisc.c: miscellaneous Windows-specific things
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include "putty.h"
-
-OSVERSIONINFO osVersion;
-
-void platform_get_x11_auth(char *display, int *proto,
- unsigned char *data, int *datalen)
-{
- /* We don't support this at all under Windows. */
-}
-
-const char platform_x11_best_transport[] = "localhost";
-
-char *platform_get_x_display(void) {
- /* We may as well check for DISPLAY in case it's useful. */
- return dupstr(getenv("DISPLAY"));
-}
-
-Filename filename_from_str(const char *str)
-{
- Filename ret;
- strncpy(ret.path, str, sizeof(ret.path));
- ret.path[sizeof(ret.path)-1] = '\0';
- return ret;
-}
-
-const char *filename_to_str(const Filename *fn)
-{
- return fn->path;
-}
-
-int filename_equal(Filename f1, Filename f2)
-{
- return !strcmp(f1.path, f2.path);
-}
-
-int filename_is_null(Filename fn)
-{
- return !*fn.path;
-}
-
-char *get_username(void)
-{
- DWORD namelen;
- char *user;
-
- namelen = 0;
- if (GetUserName(NULL, &namelen) == FALSE)
- return NULL;
-
- user = snewn(namelen, char);
- GetUserName(user, &namelen);
-
- return user;
-}
-
-int SaneDialogBox(HINSTANCE hinst,
- LPCTSTR tmpl,
- HWND hwndparent,
- DLGPROC lpDialogFunc)
-{
- WNDCLASS wc;
- HWND hwnd;
- MSG msg;
- int flags;
- int ret;
- int gm;
-
- wc.style = CS_DBLCLKS | CS_SAVEBITS | CS_BYTEALIGNWINDOW;
- wc.lpfnWndProc = DefDlgProc;
- wc.cbClsExtra = 0;
- wc.cbWndExtra = DLGWINDOWEXTRA + 8;
- wc.hInstance = hinst;
- wc.hIcon = NULL;
- wc.hCursor = LoadCursor(NULL, IDC_ARROW);
- wc.hbrBackground = (HBRUSH) (COLOR_BACKGROUND +1);
- wc.lpszMenuName = NULL;
- wc.lpszClassName = "PuTTYConfigBox";
- RegisterClass(&wc);
-
- hwnd = CreateDialog(hinst, tmpl, hwndparent, lpDialogFunc);
-
- SetWindowLong(hwnd, BOXFLAGS, 0); /* flags */
- SetWindowLong(hwnd, BOXRESULT, 0); /* result from SaneEndDialog */
-
- while ((gm=GetMessage(&msg, NULL, 0, 0)) > 0) {
- flags=GetWindowLong(hwnd, BOXFLAGS);
- if (!(flags & DF_END) && !IsDialogMessage(hwnd, &msg))
- DispatchMessage(&msg);
- if (flags & DF_END)
- break;
- }
-
- if (gm == 0)
- PostQuitMessage(msg.wParam); /* We got a WM_QUIT, pass it on */
-
- ret=GetWindowLong(hwnd, BOXRESULT);
- DestroyWindow(hwnd);
- return ret;
-}
-
-void SaneEndDialog(HWND hwnd, int ret)
-{
- SetWindowLong(hwnd, BOXRESULT, ret);
- SetWindowLong(hwnd, BOXFLAGS, DF_END);
-}
-
-BOOL init_winver(void)
-{
- ZeroMemory(&osVersion, sizeof(osVersion));
- osVersion.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
- return GetVersionEx ( (OSVERSIONINFO *) &osVersion);
-}
-
-#ifdef DEBUG
-static FILE *debug_fp = NULL;
-static HANDLE debug_hdl = INVALID_HANDLE_VALUE;
-static int debug_got_console = 0;
-
-void dputs(char *buf)
-{
- DWORD dw;
-
- if (!debug_got_console) {
- if (AllocConsole()) {
- debug_got_console = 1;
- debug_hdl = GetStdHandle(STD_OUTPUT_HANDLE);
- }
- }
- if (!debug_fp) {
- debug_fp = fopen("debug.log", "w");
- }
-
- if (debug_hdl != INVALID_HANDLE_VALUE) {
- WriteFile(debug_hdl, buf, strlen(buf), &dw, NULL);
- }
- fputs(buf, debug_fp);
- fflush(debug_fp);
-}
-#endif
-
-#ifdef MINEFIELD
-/*
- * Minefield - a Windows equivalent for Electric Fence
- */
-
-#define PAGESIZE 4096
-
-/*
- * Design:
- *
- * We start by reserving as much virtual address space as Windows
- * will sensibly (or not sensibly) let us have. We flag it all as
- * invalid memory.
- *
- * Any allocation attempt is satisfied by committing one or more
- * pages, with an uncommitted page on either side. The returned
- * memory region is jammed up against the _end_ of the pages.
- *
- * Freeing anything causes instantaneous decommitment of the pages
- * involved, so stale pointers are caught as soon as possible.
- */
-
-static int minefield_initialised = 0;
-static void *minefield_region = NULL;
-static long minefield_size = 0;
-static long minefield_npages = 0;
-static long minefield_curpos = 0;
-static unsigned short *minefield_admin = NULL;
-static void *minefield_pages = NULL;
-
-static void minefield_admin_hide(int hide)
-{
- int access = hide ? PAGE_NOACCESS : PAGE_READWRITE;
- VirtualProtect(minefield_admin, minefield_npages * 2, access, NULL);
-}
-
-static void minefield_init(void)
-{
- int size;
- int admin_size;
- int i;
-
- for (size = 0x40000000; size > 0; size = ((size >> 3) * 7) & ~0xFFF) {
- minefield_region = VirtualAlloc(NULL, size,
- MEM_RESERVE, PAGE_NOACCESS);
- if (minefield_region)
- break;
- }
- minefield_size = size;
-
- /*
- * Firstly, allocate a section of that to be the admin block.
- * We'll need a two-byte field for each page.
- */
- minefield_admin = minefield_region;
- minefield_npages = minefield_size / PAGESIZE;
- admin_size = (minefield_npages * 2 + PAGESIZE - 1) & ~(PAGESIZE - 1);
- minefield_npages = (minefield_size - admin_size) / PAGESIZE;
- minefield_pages = (char *) minefield_region + admin_size;
-
- /*
- * Commit the admin region.
- */
- VirtualAlloc(minefield_admin, minefield_npages * 2,
- MEM_COMMIT, PAGE_READWRITE);
-
- /*
- * Mark all pages as unused (0xFFFF).
- */
- for (i = 0; i < minefield_npages; i++)
- minefield_admin[i] = 0xFFFF;
-
- /*
- * Hide the admin region.
- */
- minefield_admin_hide(1);
-
- minefield_initialised = 1;
-}
-
-static void minefield_bomb(void)
-{
- div(1, *(int *) minefield_pages);
-}
-
-static void *minefield_alloc(int size)
-{
- int npages;
- int pos, lim, region_end, region_start;
- int start;
- int i;
-
- npages = (size + PAGESIZE - 1) / PAGESIZE;
-
- minefield_admin_hide(0);
-
- /*
- * Search from current position until we find a contiguous
- * bunch of npages+2 unused pages.
- */
- pos = minefield_curpos;
- lim = minefield_npages;
- while (1) {
- /* Skip over used pages. */
- while (pos < lim && minefield_admin[pos] != 0xFFFF)
- pos++;
- /* Count unused pages. */
- start = pos;
- while (pos < lim && pos - start < npages + 2 &&
- minefield_admin[pos] == 0xFFFF)
- pos++;
- if (pos - start == npages + 2)
- break;
- /* If we've reached the limit, reset the limit or stop. */
- if (pos >= lim) {
- if (lim == minefield_npages) {
- /* go round and start again at zero */
- lim = minefield_curpos;
- pos = 0;
- } else {
- minefield_admin_hide(1);
- return NULL;
- }
- }
- }
-
- minefield_curpos = pos - 1;
-
- /*
- * We have npages+2 unused pages starting at start. We leave
- * the first and last of these alone and use the rest.
- */
- region_end = (start + npages + 1) * PAGESIZE;
- region_start = region_end - size;
- /* FIXME: could align here if we wanted */
-
- /*
- * Update the admin region.
- */
- for (i = start + 2; i < start + npages + 1; i++)
- minefield_admin[i] = 0xFFFE; /* used but no region starts here */
- minefield_admin[start + 1] = region_start % PAGESIZE;
-
- minefield_admin_hide(1);
-
- VirtualAlloc((char *) minefield_pages + region_start, size,
- MEM_COMMIT, PAGE_READWRITE);
- return (char *) minefield_pages + region_start;
-}
-
-static void minefield_free(void *ptr)
-{
- int region_start, i, j;
-
- minefield_admin_hide(0);
-
- region_start = (char *) ptr - (char *) minefield_pages;
- i = region_start / PAGESIZE;
- if (i < 0 || i >= minefield_npages ||
- minefield_admin[i] != region_start % PAGESIZE)
- minefield_bomb();
- for (j = i; j < minefield_npages && minefield_admin[j] != 0xFFFF; j++) {
- minefield_admin[j] = 0xFFFF;
- }
-
- VirtualFree(ptr, j * PAGESIZE - region_start, MEM_DECOMMIT);
-
- minefield_admin_hide(1);
-}
-
-static int minefield_get_size(void *ptr)
-{
- int region_start, i, j;
-
- minefield_admin_hide(0);
-
- region_start = (char *) ptr - (char *) minefield_pages;
- i = region_start / PAGESIZE;
- if (i < 0 || i >= minefield_npages ||
- minefield_admin[i] != region_start % PAGESIZE)
- minefield_bomb();
- for (j = i; j < minefield_npages && minefield_admin[j] != 0xFFFF; j++);
-
- minefield_admin_hide(1);
-
- return j * PAGESIZE - region_start;
-}
-
-void *minefield_c_malloc(size_t size)
-{
- if (!minefield_initialised)
- minefield_init();
- return minefield_alloc(size);
-}
-
-void minefield_c_free(void *p)
-{
- if (!minefield_initialised)
- minefield_init();
- minefield_free(p);
-}
-
-/*
- * realloc _always_ moves the chunk, for rapid detection of code
- * that assumes it won't.
- */
-void *minefield_c_realloc(void *p, size_t size)
-{
- size_t oldsize;
- void *q;
- if (!minefield_initialised)
- minefield_init();
- q = minefield_alloc(size);
- oldsize = minefield_get_size(p);
- memcpy(q, p, (oldsize < size ? oldsize : size));
- minefield_free(p);
- return q;
-}
-
-#endif /* MINEFIELD */
projects / u / mdw / putty / blobdiff