2 * winstore.c: Windows-specific implementation of the interface
3 * defined in storage.h.
13 static const char *const puttystr = PUTTY_REG_POS "\\Sessions";
15 static char seedpath[2 * MAX_PATH + 10] = "\0";
17 static const char hex[16] = "0123456789ABCDEF";
19 static void mungestr(const char *in, char *out)
24 if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' ||
25 *in == '%' || *in < ' ' || *in > '~' || (*in == '.'
28 *out++ = hex[((unsigned char) *in) >> 4];
29 *out++ = hex[((unsigned char) *in) & 15];
39 static void unmungestr(const char *in, char *out, int outlen)
42 if (*in == '%' && in[1] && in[2]) {
50 *out++ = (i << 4) + j;
64 void *open_settings_w(const char *sessionname, char **errmsg)
66 HKEY subkey1, sesskey;
72 if (!sessionname || !*sessionname)
73 sessionname = "Default Settings";
75 p = snewn(3 * strlen(sessionname) + 1, char);
76 mungestr(sessionname, p);
78 ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1);
79 if (ret != ERROR_SUCCESS) {
81 *errmsg = dupprintf("Unable to create registry key\n"
82 "HKEY_CURRENT_USER%s", puttystr);
85 ret = RegCreateKey(subkey1, p, &sesskey);
88 if (ret != ERROR_SUCCESS) {
89 *errmsg = dupprintf("Unable to create registry key\n"
90 "HKEY_CURRENT_USER%s\\%s", puttystr, p);
93 return (void *) sesskey;
96 void write_setting_s(void *handle, const char *key, const char *value)
99 RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value,
103 void write_setting_i(void *handle, const char *key, int value)
106 RegSetValueEx((HKEY) handle, key, 0, REG_DWORD,
107 (CONST BYTE *) & value, sizeof(value));
110 void close_settings_w(void *handle)
112 RegCloseKey((HKEY) handle);
115 void *open_settings_r(const char *sessionname)
117 HKEY subkey1, sesskey;
120 if (!sessionname || !*sessionname)
121 sessionname = "Default Settings";
123 p = snewn(3 * strlen(sessionname) + 1, char);
124 mungestr(sessionname, p);
126 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) {
129 if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) {
132 RegCloseKey(subkey1);
137 return (void *) sesskey;
140 char *read_setting_s(void *handle, const char *key, char *buffer, int buflen)
146 RegQueryValueEx((HKEY) handle, key, 0,
147 &type, buffer, &size) != ERROR_SUCCESS ||
148 type != REG_SZ) return NULL;
153 int read_setting_i(void *handle, const char *key, int defvalue)
155 DWORD type, val, size;
159 RegQueryValueEx((HKEY) handle, key, 0, &type,
160 (BYTE *) & val, &size) != ERROR_SUCCESS ||
161 size != sizeof(val) || type != REG_DWORD)
167 int read_setting_fontspec(void *handle, const char *name, FontSpec *result)
172 if (!read_setting_s(handle, name, ret.name, sizeof(ret.name)))
174 settingname = dupcat(name, "IsBold", NULL);
175 ret.isbold = read_setting_i(handle, settingname, -1);
177 if (ret.isbold == -1) return 0;
178 settingname = dupcat(name, "CharSet", NULL);
179 ret.charset = read_setting_i(handle, settingname, -1);
181 if (ret.charset == -1) return 0;
182 settingname = dupcat(name, "Height", NULL);
183 ret.height = read_setting_i(handle, settingname, INT_MIN);
185 if (ret.height == INT_MIN) return 0;
186 if (ret.height < 0) {
188 HDC hdc = GetDC(NULL);
189 int logpix = GetDeviceCaps(hdc, LOGPIXELSY);
190 ReleaseDC(NULL, hdc);
193 newh = MulDiv(oldh, 72, logpix) + 1;
194 if (MulDiv(newh, logpix, 72) > oldh)
202 void write_setting_fontspec(void *handle, const char *name, FontSpec font)
206 write_setting_s(handle, name, font.name);
207 settingname = dupcat(name, "IsBold", NULL);
208 write_setting_i(handle, settingname, font.isbold);
210 settingname = dupcat(name, "CharSet", NULL);
211 write_setting_i(handle, settingname, font.charset);
213 settingname = dupcat(name, "Height", NULL);
214 write_setting_i(handle, settingname, font.height);
218 int read_setting_filename(void *handle, const char *name, Filename *result)
220 return !!read_setting_s(handle, name, result->path, sizeof(result->path));
223 void write_setting_filename(void *handle, const char *name, Filename result)
225 write_setting_s(handle, name, result.path);
228 void close_settings_r(void *handle)
230 RegCloseKey((HKEY) handle);
233 void del_settings(const char *sessionname)
238 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS)
241 p = snewn(3 * strlen(sessionname) + 1, char);
242 mungestr(sessionname, p);
243 RegDeleteKey(subkey1, p);
246 RegCloseKey(subkey1);
249 struct enumsettings {
254 void *enum_settings_start(void)
256 struct enumsettings *ret;
259 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS)
262 ret = snew(struct enumsettings);
271 char *enum_settings_next(void *handle, char *buffer, int buflen)
273 struct enumsettings *e = (struct enumsettings *) handle;
275 otherbuf = snewn(3 * buflen, char);
276 if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) {
277 unmungestr(otherbuf, buffer, buflen);
286 void enum_settings_finish(void *handle)
288 struct enumsettings *e = (struct enumsettings *) handle;
293 static void hostkey_regname(char *buffer, const char *hostname,
294 int port, const char *keytype)
297 strcpy(buffer, keytype);
299 len = strlen(buffer);
300 len += sprintf(buffer + len, "%d:", port);
301 mungestr(hostname, buffer + strlen(buffer));
304 int verify_host_key(const char *hostname, int port,
305 const char *keytype, const char *key)
307 char *otherstr, *regname;
314 len = 1 + strlen(key);
317 * Now read a saved key in from the registry and see what it
320 otherstr = snewn(len, char);
321 regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
323 hostkey_regname(regname, hostname, port, keytype);
325 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
326 &rkey) != ERROR_SUCCESS)
327 return 1; /* key does not exist in registry */
330 ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen);
332 if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA &&
333 !strcmp(keytype, "rsa")) {
335 * Key didn't exist. If the key type is RSA, we'll try
336 * another trick, which is to look up the _old_ key format
337 * under just the hostname and translate that.
339 char *justhost = regname + 1 + strcspn(regname, ":");
340 char *oldstyle = snewn(len + 10, char); /* safety margin */
342 ret = RegQueryValueEx(rkey, justhost, NULL, &type,
345 if (ret == ERROR_SUCCESS && type == REG_SZ) {
347 * The old format is two old-style bignums separated by
348 * a slash. An old-style bignum is made of groups of
349 * four hex digits: digits are ordered in sensible
350 * (most to least significant) order within each group,
351 * but groups are ordered in silly (least to most)
352 * order within the bignum. The new format is two
353 * ordinary C-format hex numbers (0xABCDEFG...XYZ, with
354 * A nonzero except in the special case 0x0, which
355 * doesn't appear anyway in RSA keys) separated by a
356 * comma. All hex digits are lowercase in both formats.
362 for (i = 0; i < 2; i++) {
366 ndigits = strcspn(q, "/"); /* find / or end of string */
367 nwords = ndigits / 4;
368 /* now trim ndigits to remove leading zeros */
369 while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1)
371 /* now move digits over to new string */
372 for (j = 0; j < ndigits; j++)
373 p[ndigits - 1 - j] = q[j ^ 3];
377 q++; /* eat the slash */
378 *p++ = ','; /* add a comma */
380 *p = '\0'; /* terminate the string */
384 * Now _if_ this key matches, we'll enter it in the new
385 * format. If not, we'll assume something odd went
386 * wrong, and hyper-cautiously do nothing.
388 if (!strcmp(otherstr, key))
389 RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr,
390 strlen(otherstr) + 1);
396 compare = strcmp(otherstr, key);
401 if (ret == ERROR_MORE_DATA ||
402 (ret == ERROR_SUCCESS && type == REG_SZ && compare))
403 return 2; /* key is different in registry */
404 else if (ret != ERROR_SUCCESS || type != REG_SZ)
405 return 1; /* key does not exist in registry */
407 return 0; /* key matched OK in registry */
410 void store_host_key(const char *hostname, int port,
411 const char *keytype, const char *key)
416 regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
418 hostkey_regname(regname, hostname, port, keytype);
420 if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
421 &rkey) != ERROR_SUCCESS)
422 return; /* key does not exist in registry */
423 RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1);
428 * Find the random seed file path and store it in `seedpath'.
430 static void get_seedpath(void)
435 size = sizeof(seedpath);
437 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) ==
439 int ret = RegQueryValueEx(rkey, "RandSeedFile",
440 0, &type, seedpath, &size);
441 if (ret != ERROR_SUCCESS || type != REG_SZ)
451 GetEnvironmentVariable("HOMEDRIVE", seedpath,
454 GetEnvironmentVariable("HOMEPATH", seedpath + len,
455 sizeof(seedpath) - len);
456 if (ret == 0) { /* probably win95; store in \WINDOWS */
457 GetWindowsDirectory(seedpath, sizeof(seedpath));
458 len = strlen(seedpath);
461 strcpy(seedpath + len, "\\PUTTY.RND");
465 void read_random_seed(noise_consumer_t consumer)
472 seedf = CreateFile(seedpath, GENERIC_READ,
473 FILE_SHARE_READ | FILE_SHARE_WRITE,
474 NULL, OPEN_EXISTING, 0, NULL);
476 if (seedf != INVALID_HANDLE_VALUE) {
481 if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len)
490 void write_random_seed(void *data, int len)
497 seedf = CreateFile(seedpath, GENERIC_WRITE, 0,
498 NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
500 if (seedf != INVALID_HANDLE_VALUE) {
503 WriteFile(seedf, data, len, &lenwritten, NULL);
509 * Recursively delete a registry key and everything under it.
511 static void registry_recursive_remove(HKEY key)
514 char name[MAX_PATH + 1];
518 while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) {
519 if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) {
520 registry_recursive_remove(subkey);
523 RegDeleteKey(key, name);
527 void cleanup_all(void)
531 char name[MAX_PATH + 1];
533 /* ------------------------------------------------------------
534 * Wipe out the random seed file.
540 /* ------------------------------------------------------------
541 * Destroy all registry information associated with PuTTY.
545 * Open the main PuTTY registry key and remove everything in it.
547 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) ==
549 registry_recursive_remove(key);
553 * Now open the parent key and remove the PuTTY main key. Once
554 * we've done that, see if the parent key has any other
557 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT,
558 &key) == ERROR_SUCCESS) {
559 RegDeleteKey(key, PUTTY_REG_PARENT_CHILD);
560 ret = RegEnumKey(key, 0, name, sizeof(name));
563 * If the parent key had no other children, we must delete
564 * it in its turn. That means opening the _grandparent_
567 if (ret != ERROR_SUCCESS) {
568 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT,
569 &key) == ERROR_SUCCESS) {
570 RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD);