2 * winstore.c: Windows-specific implementation of the interface
3 * defined in storage.h.
12 static const char *const puttystr = PUTTY_REG_POS "\\Sessions";
14 static char seedpath[2 * MAX_PATH + 10] = "\0";
16 static const char hex[16] = "0123456789ABCDEF";
18 static void mungestr(const char *in, char *out)
23 if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' ||
24 *in == '%' || *in < ' ' || *in > '~' || (*in == '.'
27 *out++ = hex[((unsigned char) *in) >> 4];
28 *out++ = hex[((unsigned char) *in) & 15];
38 static void unmungestr(const char *in, char *out, int outlen)
41 if (*in == '%' && in[1] && in[2]) {
49 *out++ = (i << 4) + j;
63 void *open_settings_w(const char *sessionname, char **errmsg)
65 HKEY subkey1, sesskey;
71 if (!sessionname || !*sessionname)
72 sessionname = "Default Settings";
74 p = snewn(3 * strlen(sessionname) + 1, char);
75 mungestr(sessionname, p);
77 ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1);
78 if (ret != ERROR_SUCCESS) {
80 *errmsg = dupprintf("Unable to create registry key\n"
81 "HKEY_CURRENT_USER%s", puttystr);
84 ret = RegCreateKey(subkey1, p, &sesskey);
87 if (ret != ERROR_SUCCESS) {
88 *errmsg = dupprintf("Unable to create registry key\n"
89 "HKEY_CURRENT_USER%s\\%s", puttystr, p);
92 return (void *) sesskey;
95 void write_setting_s(void *handle, const char *key, const char *value)
98 RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value,
102 void write_setting_i(void *handle, const char *key, int value)
105 RegSetValueEx((HKEY) handle, key, 0, REG_DWORD,
106 (CONST BYTE *) & value, sizeof(value));
109 void close_settings_w(void *handle)
111 RegCloseKey((HKEY) handle);
114 void *open_settings_r(const char *sessionname)
116 HKEY subkey1, sesskey;
119 if (!sessionname || !*sessionname)
120 sessionname = "Default Settings";
122 p = snewn(3 * strlen(sessionname) + 1, char);
123 mungestr(sessionname, p);
125 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) {
128 if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) {
131 RegCloseKey(subkey1);
136 return (void *) sesskey;
139 char *read_setting_s(void *handle, const char *key, char *buffer, int buflen)
145 RegQueryValueEx((HKEY) handle, key, 0,
146 &type, buffer, &size) != ERROR_SUCCESS ||
147 type != REG_SZ) return NULL;
152 int read_setting_i(void *handle, const char *key, int defvalue)
154 DWORD type, val, size;
158 RegQueryValueEx((HKEY) handle, key, 0, &type,
159 (BYTE *) & val, &size) != ERROR_SUCCESS ||
160 size != sizeof(val) || type != REG_DWORD)
166 int read_setting_fontspec(void *handle, const char *name, FontSpec *result)
171 if (!read_setting_s(handle, name, ret.name, sizeof(ret.name)))
173 settingname = dupcat(name, "IsBold", NULL);
174 ret.isbold = read_setting_i(handle, settingname, -1);
176 if (ret.isbold == -1) return 0;
177 settingname = dupcat(name, "CharSet", NULL);
178 ret.charset = read_setting_i(handle, settingname, -1);
180 if (ret.charset == -1) return 0;
181 settingname = dupcat(name, "Height", NULL);
182 ret.height = read_setting_i(handle, settingname, INT_MIN);
184 if (ret.height == INT_MIN) return 0;
185 if (ret.height < 0) {
187 HDC hdc = GetDC(NULL);
188 int logpix = GetDeviceCaps(hdc, LOGPIXELSY);
189 ReleaseDC(NULL, hdc);
192 newh = MulDiv(oldh, 72, logpix) + 1;
193 if (MulDiv(newh, logpix, 72) > oldh)
201 void write_setting_fontspec(void *handle, const char *name, FontSpec font)
205 write_setting_s(handle, name, font.name);
206 settingname = dupcat(name, "IsBold", NULL);
207 write_setting_i(handle, settingname, font.isbold);
209 settingname = dupcat(name, "CharSet", NULL);
210 write_setting_i(handle, settingname, font.charset);
212 settingname = dupcat(name, "Height", NULL);
213 write_setting_i(handle, settingname, font.height);
217 int read_setting_filename(void *handle, const char *name, Filename *result)
219 return !!read_setting_s(handle, name, result->path, sizeof(result->path));
222 void write_setting_filename(void *handle, const char *name, Filename result)
224 write_setting_s(handle, name, result.path);
227 void close_settings_r(void *handle)
229 RegCloseKey((HKEY) handle);
232 void del_settings(const char *sessionname)
237 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS)
240 p = snewn(3 * strlen(sessionname) + 1, char);
241 mungestr(sessionname, p);
242 RegDeleteKey(subkey1, p);
245 RegCloseKey(subkey1);
248 struct enumsettings {
253 void *enum_settings_start(void)
255 struct enumsettings *ret;
258 if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS)
261 ret = snew(struct enumsettings);
270 char *enum_settings_next(void *handle, char *buffer, int buflen)
272 struct enumsettings *e = (struct enumsettings *) handle;
274 otherbuf = snewn(3 * buflen, char);
275 if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) {
276 unmungestr(otherbuf, buffer, buflen);
285 void enum_settings_finish(void *handle)
287 struct enumsettings *e = (struct enumsettings *) handle;
292 static void hostkey_regname(char *buffer, const char *hostname,
293 int port, const char *keytype)
296 strcpy(buffer, keytype);
298 len = strlen(buffer);
299 len += sprintf(buffer + len, "%d:", port);
300 mungestr(hostname, buffer + strlen(buffer));
303 int verify_host_key(const char *hostname, int port,
304 const char *keytype, const char *key)
306 char *otherstr, *regname;
313 len = 1 + strlen(key);
316 * Now read a saved key in from the registry and see what it
319 otherstr = snewn(len, char);
320 regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
322 hostkey_regname(regname, hostname, port, keytype);
324 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
325 &rkey) != ERROR_SUCCESS)
326 return 1; /* key does not exist in registry */
329 ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen);
331 if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA &&
332 !strcmp(keytype, "rsa")) {
334 * Key didn't exist. If the key type is RSA, we'll try
335 * another trick, which is to look up the _old_ key format
336 * under just the hostname and translate that.
338 char *justhost = regname + 1 + strcspn(regname, ":");
339 char *oldstyle = snewn(len + 10, char); /* safety margin */
341 ret = RegQueryValueEx(rkey, justhost, NULL, &type,
344 if (ret == ERROR_SUCCESS && type == REG_SZ) {
346 * The old format is two old-style bignums separated by
347 * a slash. An old-style bignum is made of groups of
348 * four hex digits: digits are ordered in sensible
349 * (most to least significant) order within each group,
350 * but groups are ordered in silly (least to most)
351 * order within the bignum. The new format is two
352 * ordinary C-format hex numbers (0xABCDEFG...XYZ, with
353 * A nonzero except in the special case 0x0, which
354 * doesn't appear anyway in RSA keys) separated by a
355 * comma. All hex digits are lowercase in both formats.
361 for (i = 0; i < 2; i++) {
365 ndigits = strcspn(q, "/"); /* find / or end of string */
366 nwords = ndigits / 4;
367 /* now trim ndigits to remove leading zeros */
368 while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1)
370 /* now move digits over to new string */
371 for (j = 0; j < ndigits; j++)
372 p[ndigits - 1 - j] = q[j ^ 3];
376 q++; /* eat the slash */
377 *p++ = ','; /* add a comma */
379 *p = '\0'; /* terminate the string */
383 * Now _if_ this key matches, we'll enter it in the new
384 * format. If not, we'll assume something odd went
385 * wrong, and hyper-cautiously do nothing.
387 if (!strcmp(otherstr, key))
388 RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr,
389 strlen(otherstr) + 1);
395 compare = strcmp(otherstr, key);
400 if (ret == ERROR_MORE_DATA ||
401 (ret == ERROR_SUCCESS && type == REG_SZ && compare))
402 return 2; /* key is different in registry */
403 else if (ret != ERROR_SUCCESS || type != REG_SZ)
404 return 1; /* key does not exist in registry */
406 return 0; /* key matched OK in registry */
409 void store_host_key(const char *hostname, int port,
410 const char *keytype, const char *key)
415 regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char);
417 hostkey_regname(regname, hostname, port, keytype);
419 if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys",
420 &rkey) != ERROR_SUCCESS)
421 return; /* key does not exist in registry */
422 RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1);
427 * Find the random seed file path and store it in `seedpath'.
429 static void get_seedpath(void)
434 size = sizeof(seedpath);
436 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) ==
438 int ret = RegQueryValueEx(rkey, "RandSeedFile",
439 0, &type, seedpath, &size);
440 if (ret != ERROR_SUCCESS || type != REG_SZ)
450 GetEnvironmentVariable("HOMEDRIVE", seedpath,
453 GetEnvironmentVariable("HOMEPATH", seedpath + len,
454 sizeof(seedpath) - len);
455 if (ret == 0) { /* probably win95; store in \WINDOWS */
456 GetWindowsDirectory(seedpath, sizeof(seedpath));
457 len = strlen(seedpath);
460 strcpy(seedpath + len, "\\PUTTY.RND");
464 void read_random_seed(noise_consumer_t consumer)
471 seedf = CreateFile(seedpath, GENERIC_READ,
472 FILE_SHARE_READ | FILE_SHARE_WRITE,
473 NULL, OPEN_EXISTING, 0, NULL);
475 if (seedf != INVALID_HANDLE_VALUE) {
480 if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len)
489 void write_random_seed(void *data, int len)
496 seedf = CreateFile(seedpath, GENERIC_WRITE, 0,
497 NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
499 if (seedf != INVALID_HANDLE_VALUE) {
502 WriteFile(seedf, data, len, &lenwritten, NULL);
508 * Recursively delete a registry key and everything under it.
510 static void registry_recursive_remove(HKEY key)
513 char name[MAX_PATH + 1];
517 while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) {
518 if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) {
519 registry_recursive_remove(subkey);
522 RegDeleteKey(key, name);
526 void cleanup_all(void)
530 char name[MAX_PATH + 1];
532 /* ------------------------------------------------------------
533 * Wipe out the random seed file.
539 /* ------------------------------------------------------------
540 * Destroy all registry information associated with PuTTY.
544 * Open the main PuTTY registry key and remove everything in it.
546 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) ==
548 registry_recursive_remove(key);
552 * Now open the parent key and remove the PuTTY main key. Once
553 * we've done that, see if the parent key has any other
556 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT,
557 &key) == ERROR_SUCCESS) {
558 RegDeleteKey(key, PUTTY_REG_PARENT_CHILD);
559 ret = RegEnumKey(key, 0, name, sizeof(name));
562 * If the parent key had no other children, we must delete
563 * it in its turn. That means opening the _grandparent_
566 if (ret != ERROR_SUCCESS) {
567 if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT,
568 &key) == ERROR_SUCCESS) {
569 RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD);