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 if (!sessionname
|| !*sessionname
)
71 sessionname
= "Default Settings";
73 p
= snewn(3 * strlen(sessionname
) + 1, char);
74 mungestr(sessionname
, p
);
76 ret
= RegCreateKey(HKEY_CURRENT_USER
, puttystr
, &subkey1
);
77 if (ret
!= ERROR_SUCCESS
) {
81 ret
= RegCreateKey(subkey1
, p
, &sesskey
);
84 if (ret
!= ERROR_SUCCESS
)
86 return (void *) sesskey
;
89 void write_setting_s(void *handle
, const char *key
, const char *value
)
92 RegSetValueEx((HKEY
) handle
, key
, 0, REG_SZ
, value
,
96 void write_setting_i(void *handle
, const char *key
, int value
)
99 RegSetValueEx((HKEY
) handle
, key
, 0, REG_DWORD
,
100 (CONST BYTE
*) & value
, sizeof(value
));
103 void close_settings_w(void *handle
)
105 RegCloseKey((HKEY
) handle
);
108 void *open_settings_r(const char *sessionname
)
110 HKEY subkey1
, sesskey
;
113 if (!sessionname
|| !*sessionname
)
114 sessionname
= "Default Settings";
116 p
= snewn(3 * strlen(sessionname
) + 1, char);
117 mungestr(sessionname
, p
);
119 if (RegOpenKey(HKEY_CURRENT_USER
, puttystr
, &subkey1
) != ERROR_SUCCESS
) {
122 if (RegOpenKey(subkey1
, p
, &sesskey
) != ERROR_SUCCESS
) {
125 RegCloseKey(subkey1
);
130 return (void *) sesskey
;
133 char *read_setting_s(void *handle
, const char *key
, char *buffer
, int buflen
)
139 RegQueryValueEx((HKEY
) handle
, key
, 0,
140 &type
, buffer
, &size
) != ERROR_SUCCESS
||
141 type
!= REG_SZ
) return NULL
;
146 int read_setting_i(void *handle
, const char *key
, int defvalue
)
148 DWORD type
, val
, size
;
152 RegQueryValueEx((HKEY
) handle
, key
, 0, &type
,
153 (BYTE
*) & val
, &size
) != ERROR_SUCCESS
||
154 size
!= sizeof(val
) || type
!= REG_DWORD
)
160 int read_setting_fontspec(void *handle
, const char *name
, FontSpec
*result
)
165 if (!read_setting_s(handle
, name
, ret
.name
, sizeof(ret
.name
)))
167 settingname
= dupcat(name
, "IsBold", NULL
);
168 ret
.isbold
= read_setting_i(handle
, settingname
, -1);
170 if (ret
.isbold
== -1) return 0;
171 settingname
= dupcat(name
, "CharSet", NULL
);
172 ret
.charset
= read_setting_i(handle
, settingname
, -1);
174 if (ret
.charset
== -1) return 0;
175 settingname
= dupcat(name
, "Height", NULL
);
176 ret
.height
= read_setting_i(handle
, settingname
, INT_MIN
);
178 if (ret
.height
== INT_MIN
) return 0;
179 if (ret
.height
< 0) {
181 HDC hdc
= GetDC(NULL
);
182 int logpix
= GetDeviceCaps(hdc
, LOGPIXELSY
);
183 ReleaseDC(NULL
, hdc
);
186 newh
= MulDiv(oldh
, 72, logpix
) + 1;
187 if (MulDiv(newh
, logpix
, 72) > oldh
)
195 void write_setting_fontspec(void *handle
, const char *name
, FontSpec font
)
199 write_setting_s(handle
, name
, font
.name
);
200 settingname
= dupcat(name
, "IsBold", NULL
);
201 write_setting_i(handle
, settingname
, font
.isbold
);
203 settingname
= dupcat(name
, "CharSet", NULL
);
204 write_setting_i(handle
, settingname
, font
.charset
);
206 settingname
= dupcat(name
, "Height", NULL
);
207 write_setting_i(handle
, settingname
, font
.height
);
211 int read_setting_filename(void *handle
, const char *name
, Filename
*result
)
213 return !!read_setting_s(handle
, name
, result
->path
, sizeof(result
->path
));
216 void write_setting_filename(void *handle
, const char *name
, Filename result
)
218 write_setting_s(handle
, name
, result
.path
);
221 void close_settings_r(void *handle
)
223 RegCloseKey((HKEY
) handle
);
226 void del_settings(const char *sessionname
)
231 if (RegOpenKey(HKEY_CURRENT_USER
, puttystr
, &subkey1
) != ERROR_SUCCESS
)
234 p
= snewn(3 * strlen(sessionname
) + 1, char);
235 mungestr(sessionname
, p
);
236 RegDeleteKey(subkey1
, p
);
239 RegCloseKey(subkey1
);
242 struct enumsettings
{
247 void *enum_settings_start(void)
249 struct enumsettings
*ret
;
252 if (RegOpenKey(HKEY_CURRENT_USER
, puttystr
, &key
) != ERROR_SUCCESS
)
255 ret
= snew(struct enumsettings
);
264 char *enum_settings_next(void *handle
, char *buffer
, int buflen
)
266 struct enumsettings
*e
= (struct enumsettings
*) handle
;
268 otherbuf
= snewn(3 * buflen
, char);
269 if (RegEnumKey(e
->key
, e
->i
++, otherbuf
, 3 * buflen
) == ERROR_SUCCESS
) {
270 unmungestr(otherbuf
, buffer
, buflen
);
279 void enum_settings_finish(void *handle
)
281 struct enumsettings
*e
= (struct enumsettings
*) handle
;
286 static void hostkey_regname(char *buffer
, const char *hostname
,
287 int port
, const char *keytype
)
290 strcpy(buffer
, keytype
);
292 len
= strlen(buffer
);
293 len
+= sprintf(buffer
+ len
, "%d:", port
);
294 mungestr(hostname
, buffer
+ strlen(buffer
));
297 int verify_host_key(const char *hostname
, int port
,
298 const char *keytype
, const char *key
)
300 char *otherstr
, *regname
;
307 len
= 1 + strlen(key
);
310 * Now read a saved key in from the registry and see what it
313 otherstr
= snewn(len
, char);
314 regname
= snewn(3 * (strlen(hostname
) + strlen(keytype
)) + 15, char);
316 hostkey_regname(regname
, hostname
, port
, keytype
);
318 if (RegOpenKey(HKEY_CURRENT_USER
, PUTTY_REG_POS
"\\SshHostKeys",
319 &rkey
) != ERROR_SUCCESS
)
320 return 1; /* key does not exist in registry */
323 ret
= RegQueryValueEx(rkey
, regname
, NULL
, &type
, otherstr
, &readlen
);
325 if (ret
!= ERROR_SUCCESS
&& ret
!= ERROR_MORE_DATA
&&
326 !strcmp(keytype
, "rsa")) {
328 * Key didn't exist. If the key type is RSA, we'll try
329 * another trick, which is to look up the _old_ key format
330 * under just the hostname and translate that.
332 char *justhost
= regname
+ 1 + strcspn(regname
, ":");
333 char *oldstyle
= snewn(len
+ 10, char); /* safety margin */
335 ret
= RegQueryValueEx(rkey
, justhost
, NULL
, &type
,
338 if (ret
== ERROR_SUCCESS
&& type
== REG_SZ
) {
340 * The old format is two old-style bignums separated by
341 * a slash. An old-style bignum is made of groups of
342 * four hex digits: digits are ordered in sensible
343 * (most to least significant) order within each group,
344 * but groups are ordered in silly (least to most)
345 * order within the bignum. The new format is two
346 * ordinary C-format hex numbers (0xABCDEFG...XYZ, with
347 * A nonzero except in the special case 0x0, which
348 * doesn't appear anyway in RSA keys) separated by a
349 * comma. All hex digits are lowercase in both formats.
355 for (i
= 0; i
< 2; i
++) {
359 ndigits
= strcspn(q
, "/"); /* find / or end of string */
360 nwords
= ndigits
/ 4;
361 /* now trim ndigits to remove leading zeros */
362 while (q
[(ndigits
- 1) ^ 3] == '0' && ndigits
> 1)
364 /* now move digits over to new string */
365 for (j
= 0; j
< ndigits
; j
++)
366 p
[ndigits
- 1 - j
] = q
[j
^ 3];
370 q
++; /* eat the slash */
371 *p
++ = ','; /* add a comma */
373 *p
= '\0'; /* terminate the string */
377 * Now _if_ this key matches, we'll enter it in the new
378 * format. If not, we'll assume something odd went
379 * wrong, and hyper-cautiously do nothing.
381 if (!strcmp(otherstr
, key
))
382 RegSetValueEx(rkey
, regname
, 0, REG_SZ
, otherstr
,
383 strlen(otherstr
) + 1);
389 compare
= strcmp(otherstr
, key
);
394 if (ret
== ERROR_MORE_DATA
||
395 (ret
== ERROR_SUCCESS
&& type
== REG_SZ
&& compare
))
396 return 2; /* key is different in registry */
397 else if (ret
!= ERROR_SUCCESS
|| type
!= REG_SZ
)
398 return 1; /* key does not exist in registry */
400 return 0; /* key matched OK in registry */
403 void store_host_key(const char *hostname
, int port
,
404 const char *keytype
, const char *key
)
409 regname
= snewn(3 * (strlen(hostname
) + strlen(keytype
)) + 15, char);
411 hostkey_regname(regname
, hostname
, port
, keytype
);
413 if (RegCreateKey(HKEY_CURRENT_USER
, PUTTY_REG_POS
"\\SshHostKeys",
414 &rkey
) != ERROR_SUCCESS
)
415 return; /* key does not exist in registry */
416 RegSetValueEx(rkey
, regname
, 0, REG_SZ
, key
, strlen(key
) + 1);
421 * Find the random seed file path and store it in `seedpath'.
423 static void get_seedpath(void)
428 size
= sizeof(seedpath
);
430 if (RegOpenKey(HKEY_CURRENT_USER
, PUTTY_REG_POS
, &rkey
) ==
432 int ret
= RegQueryValueEx(rkey
, "RandSeedFile",
433 0, &type
, seedpath
, &size
);
434 if (ret
!= ERROR_SUCCESS
|| type
!= REG_SZ
)
444 GetEnvironmentVariable("HOMEDRIVE", seedpath
,
447 GetEnvironmentVariable("HOMEPATH", seedpath
+ len
,
448 sizeof(seedpath
) - len
);
449 if (ret
== 0) { /* probably win95; store in \WINDOWS */
450 GetWindowsDirectory(seedpath
, sizeof(seedpath
));
451 len
= strlen(seedpath
);
454 strcpy(seedpath
+ len
, "\\PUTTY.RND");
458 void read_random_seed(noise_consumer_t consumer
)
465 seedf
= CreateFile(seedpath
, GENERIC_READ
,
466 FILE_SHARE_READ
| FILE_SHARE_WRITE
,
467 NULL
, OPEN_EXISTING
, 0, NULL
);
469 if (seedf
!= INVALID_HANDLE_VALUE
) {
474 if (ReadFile(seedf
, buf
, sizeof(buf
), &len
, NULL
) && len
)
483 void write_random_seed(void *data
, int len
)
490 seedf
= CreateFile(seedpath
, GENERIC_WRITE
, 0,
491 NULL
, CREATE_ALWAYS
, FILE_ATTRIBUTE_NORMAL
, NULL
);
493 if (seedf
!= INVALID_HANDLE_VALUE
) {
496 WriteFile(seedf
, data
, len
, &lenwritten
, NULL
);
502 * Recursively delete a registry key and everything under it.
504 static void registry_recursive_remove(HKEY key
)
507 char name
[MAX_PATH
+ 1];
511 while (RegEnumKey(key
, i
, name
, sizeof(name
)) == ERROR_SUCCESS
) {
512 if (RegOpenKey(key
, name
, &subkey
) == ERROR_SUCCESS
) {
513 registry_recursive_remove(subkey
);
516 RegDeleteKey(key
, name
);
520 void cleanup_all(void)
524 char name
[MAX_PATH
+ 1];
526 /* ------------------------------------------------------------
527 * Wipe out the random seed file.
533 /* ------------------------------------------------------------
534 * Destroy all registry information associated with PuTTY.
538 * Open the main PuTTY registry key and remove everything in it.
540 if (RegOpenKey(HKEY_CURRENT_USER
, PUTTY_REG_POS
, &key
) ==
542 registry_recursive_remove(key
);
546 * Now open the parent key and remove the PuTTY main key. Once
547 * we've done that, see if the parent key has any other
550 if (RegOpenKey(HKEY_CURRENT_USER
, PUTTY_REG_PARENT
,
551 &key
) == ERROR_SUCCESS
) {
552 RegDeleteKey(key
, PUTTY_REG_PARENT_CHILD
);
553 ret
= RegEnumKey(key
, 0, name
, sizeof(name
));
556 * If the parent key had no other children, we must delete
557 * it in its turn. That means opening the _grandparent_
560 if (ret
!= ERROR_SUCCESS
) {
561 if (RegOpenKey(HKEY_CURRENT_USER
, PUTTY_REG_GPARENT
,
562 &key
) == ERROR_SUCCESS
) {
563 RegDeleteKey(key
, PUTTY_REG_GPARENT_CHILD
);