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
);