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)
66 HKEY subkey1, sesskey;
70 p = smalloc(3 * strlen(sessionname) + 1);
71 mungestr(sessionname, p);
73 ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1);
74 if (ret != ERROR_SUCCESS) {
78 ret = RegCreateKey(subkey1, p, &sesskey);
81 if (ret != ERROR_SUCCESS)
83 return (void *) sesskey;
86 void write_setting_s(void *handle, const char *key, const char *value)
89 RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value,
93 void write_setting_i(void *handle, const char *key, int value)
96 RegSetValueEx((HKEY) handle, key, 0, REG_DWORD,
97 (CONST BYTE *) & value, sizeof(value));
100 void close_settings_w(void *handle)
102 RegCloseKey((HKEY) handle);
105 void *open_settings_r(const char *sessionname)
107 HKEY subkey1, sesskey;
110 p = smalloc(3 * strlen(sessionname) + 1);
111 mungestr(sessionname, p);
113 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) {
116 if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) {
119 RegCloseKey(subkey1);
124 return (void *) sesskey;
127 char *read_setting_s(void *handle, const char *key, char *buffer, int buflen)
133 RegQueryValueEx((HKEY) handle, key, 0,
134 &type, buffer, &size) != ERROR_SUCCESS ||
135 type != REG_SZ) return NULL;
140 int read_setting_i(void *handle, const char *key, int defvalue)
142 DWORD type, val, size;
146 RegQueryValueEx((HKEY) handle, key, 0, &type,
147 (BYTE *) & val, &size) != ERROR_SUCCESS ||
148 size != sizeof(val) || type != REG_DWORD)
154 int read_setting_fontspec(void *handle, const char *name, FontSpec *result)
159 if (!read_setting_s(handle, name, ret.name, sizeof(ret.name)))
161 settingname = dupcat(name, "IsBold", NULL);
162 ret.isbold = read_setting_i(handle, settingname, -1);
164 if (ret.isbold == -1) return 0;
165 settingname = dupcat(name, "CharSet", NULL);
166 ret.charset = read_setting_i(handle, settingname, -1);
168 if (ret.charset == -1) return 0;
169 settingname = dupcat(name, "Height", NULL);
170 ret.height = read_setting_i(handle, settingname, INT_MIN);
172 if (ret.height == INT_MIN) return 0;
173 if (ret.height < 0) {
175 HDC hdc = GetDC(NULL);
176 int logpix = GetDeviceCaps(hdc, LOGPIXELSY);
177 ReleaseDC(NULL, hdc);
180 newh = MulDiv(oldh, 72, logpix) + 1;
181 if (MulDiv(newh, logpix, 72) > oldh)
189 void write_setting_fontspec(void *handle, const char *name, FontSpec font)
193 write_setting_s(handle, name, font.name);
194 settingname = dupcat(name, "IsBold", NULL);
195 write_setting_i(handle, settingname, font.isbold);
197 settingname = dupcat(name, "CharSet", NULL);
198 write_setting_i(handle, settingname, font.charset);
200 settingname = dupcat(name, "Height", NULL);
201 write_setting_i(handle, settingname, font.height);
205 int read_setting_filename(void *handle, const char *name, Filename *result)
207 return !!read_setting_s(handle, name, result->path, sizeof(result->path));
210 void write_setting_filename(void *handle, const char *name, Filename result)
212 write_setting_s(handle, name, result.path);
215 void close_settings_r(void *handle)
217 RegCloseKey((HKEY) handle);
220 void del_settings(const char *sessionname)
225 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS)
228 p = smalloc(3 * strlen(sessionname) + 1);
229 mungestr(sessionname, p);
230 RegDeleteKey(subkey1, p);
233 RegCloseKey(subkey1);
236 struct enumsettings {
241 void *enum_settings_start(void)
243 struct enumsettings *ret;
246 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS)
249 ret = smalloc(sizeof(*ret));
258 char *enum_settings_next(void *handle, char *buffer, int buflen)
260 struct enumsettings *e = (struct enumsettings *) handle;
262 otherbuf = smalloc(3 * buflen);
263 if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) {
264 unmungestr(otherbuf, buffer, buflen);
273 void enum_settings_finish(void *handle)
275 struct enumsettings *e = (struct enumsettings *) handle;
280 static void hostkey_regname(char *buffer, const char *hostname,
281 int port, const char *keytype)
284 strcpy(buffer, keytype);
286 len = strlen(buffer);
287 len += sprintf(buffer + len, "%d:", port);
288 mungestr(hostname, buffer + strlen(buffer));
291 int verify_host_key(const char *hostname, int port,
292 const char *keytype, const char *key)
294 char *otherstr, *regname;
301 len = 1 + strlen(key);
304 * Now read a saved key in from the registry and see what it
307 otherstr = smalloc(len);
308 regname = smalloc(3 * (strlen(hostname) + strlen(keytype)) + 15);
310 hostkey_regname(regname, hostname, port, keytype);
312 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
313 &rkey) != ERROR_SUCCESS)
314 return 1; /* key does not exist in registry */
317 ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen);
319 if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA &&
320 !strcmp(keytype, "rsa")) {
322 * Key didn't exist. If the key type is RSA, we'll try
323 * another trick, which is to look up the _old_ key format
324 * under just the hostname and translate that.
326 char *justhost = regname + 1 + strcspn(regname, ":");
327 char *oldstyle = smalloc(len + 10); /* safety margin */
329 ret = RegQueryValueEx(rkey, justhost, NULL, &type,
332 if (ret == ERROR_SUCCESS && type == REG_SZ) {
334 * The old format is two old-style bignums separated by
335 * a slash. An old-style bignum is made of groups of
336 * four hex digits: digits are ordered in sensible
337 * (most to least significant) order within each group,
338 * but groups are ordered in silly (least to most)
339 * order within the bignum. The new format is two
340 * ordinary C-format hex numbers (0xABCDEFG...XYZ, with
341 * A nonzero except in the special case 0x0, which
342 * doesn't appear anyway in RSA keys) separated by a
343 * comma. All hex digits are lowercase in both formats.
349 for (i = 0; i < 2; i++) {
353 ndigits = strcspn(q, "/"); /* find / or end of string */
354 nwords = ndigits / 4;
355 /* now trim ndigits to remove leading zeros */
356 while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1)
358 /* now move digits over to new string */
359 for (j = 0; j < ndigits; j++)
360 p[ndigits - 1 - j] = q[j ^ 3];
364 q++; /* eat the slash */
365 *p++ = ','; /* add a comma */
367 *p = '\0'; /* terminate the string */
371 * Now _if_ this key matches, we'll enter it in the new
372 * format. If not, we'll assume something odd went
373 * wrong, and hyper-cautiously do nothing.
375 if (!strcmp(otherstr, key))
376 RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr,
377 strlen(otherstr) + 1);
383 compare = strcmp(otherstr, key);
388 if (ret == ERROR_MORE_DATA ||
389 (ret == ERROR_SUCCESS && type == REG_SZ && compare))
390 return 2; /* key is different in registry */
391 else if (ret != ERROR_SUCCESS || type != REG_SZ)
392 return 1; /* key does not exist in registry */
394 return 0; /* key matched OK in registry */
397 void store_host_key(const char *hostname, int port,
398 const char *keytype, const char *key)
403 regname = smalloc(3 * (strlen(hostname) + strlen(keytype)) + 15);
405 hostkey_regname(regname, hostname, port, keytype);
407 if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
408 &rkey) != ERROR_SUCCESS)
409 return; /* key does not exist in registry */
410 RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1);
415 * Find the random seed file path and store it in `seedpath'.
417 static void get_seedpath(void)
422 size = sizeof(seedpath);
424 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) ==
426 int ret = RegQueryValueEx(rkey, "RandSeedFile",
427 0, &type, seedpath, &size);
428 if (ret != ERROR_SUCCESS || type != REG_SZ)
438 GetEnvironmentVariable("HOMEDRIVE", seedpath,
441 GetEnvironmentVariable("HOMEPATH", seedpath + len,
442 sizeof(seedpath) - len);
443 if (ret == 0) { /* probably win95; store in \WINDOWS */
444 GetWindowsDirectory(seedpath, sizeof(seedpath));
445 len = strlen(seedpath);
448 strcpy(seedpath + len, "\\PUTTY.RND");
452 void read_random_seed(noise_consumer_t consumer)
459 seedf = CreateFile(seedpath, GENERIC_READ,
460 FILE_SHARE_READ | FILE_SHARE_WRITE,
461 NULL, OPEN_EXISTING, 0, NULL);
463 if (seedf != INVALID_HANDLE_VALUE) {
468 if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len)
477 void write_random_seed(void *data, int len)
484 seedf = CreateFile(seedpath, GENERIC_WRITE, 0,
485 NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
487 if (seedf != INVALID_HANDLE_VALUE) {
490 WriteFile(seedf, data, len, &lenwritten, NULL);
496 * Recursively delete a registry key and everything under it.
498 static void registry_recursive_remove(HKEY key)
501 char name[MAX_PATH + 1];
505 while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) {
506 if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) {
507 registry_recursive_remove(subkey);
510 RegDeleteKey(key, name);
514 void cleanup_all(void)
518 char name[MAX_PATH + 1];
520 /* ------------------------------------------------------------
521 * Wipe out the random seed file.
527 /* ------------------------------------------------------------
528 * Destroy all registry information associated with PuTTY.
532 * Open the main PuTTY registry key and remove everything in it.
534 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) ==
536 registry_recursive_remove(key);
540 * Now open the parent key and remove the PuTTY main key. Once
541 * we've done that, see if the parent key has any other
544 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT,
545 &key) == ERROR_SUCCESS) {
546 RegDeleteKey(key, PUTTY_REG_PARENT_CHILD);
547 ret = RegEnumKey(key, 0, name, sizeof(name));
550 * If the parent key had no other children, we must delete
551 * it in its turn. That means opening the _grandparent_
554 if (ret != ERROR_SUCCESS) {
555 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT,
556 &key) == ERROR_SUCCESS) {
557 RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD);