d5859615 |
1 | /* |
2 | * winstore.c: Windows-specific implementation of the interface |
3 | * defined in storage.h. |
4 | */ |
5 | |
6 | #include <windows.h> |
7 | #include <stdio.h> |
49bad831 |
8 | #include <stdlib.h> |
9a30e26b |
9 | #include <limits.h> |
d5859615 |
10 | #include "putty.h" |
11 | #include "storage.h" |
12 | |
d1622aed |
13 | static const char *const puttystr = PUTTY_REG_POS "\\Sessions"; |
14 | |
32874aea |
15 | static char seedpath[2 * MAX_PATH + 10] = "\0"; |
d5859615 |
16 | |
c85623f9 |
17 | static const char hex[16] = "0123456789ABCDEF"; |
d5859615 |
18 | |
c85623f9 |
19 | static void mungestr(const char *in, char *out) |
32874aea |
20 | { |
d5859615 |
21 | int candot = 0; |
22 | |
23 | while (*in) { |
24 | if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' || |
32874aea |
25 | *in == '%' || *in < ' ' || *in > '~' || (*in == '.' |
26 | && !candot)) { |
d5859615 |
27 | *out++ = '%'; |
32874aea |
28 | *out++ = hex[((unsigned char) *in) >> 4]; |
29 | *out++ = hex[((unsigned char) *in) & 15]; |
d5859615 |
30 | } else |
31 | *out++ = *in; |
32 | in++; |
33 | candot = 1; |
34 | } |
35 | *out = '\0'; |
36 | return; |
37 | } |
38 | |
c85623f9 |
39 | static void unmungestr(const char *in, char *out, int outlen) |
32874aea |
40 | { |
d5859615 |
41 | while (*in) { |
42 | if (*in == '%' && in[1] && in[2]) { |
43 | int i, j; |
44 | |
32874aea |
45 | i = in[1] - '0'; |
46 | i -= (i > 9 ? 7 : 0); |
47 | j = in[2] - '0'; |
48 | j -= (j > 9 ? 7 : 0); |
d5859615 |
49 | |
32874aea |
50 | *out++ = (i << 4) + j; |
51 | if (!--outlen) |
52 | return; |
d5859615 |
53 | in += 3; |
d1622aed |
54 | } else { |
d5859615 |
55 | *out++ = *in++; |
32874aea |
56 | if (!--outlen) |
57 | return; |
58 | } |
d5859615 |
59 | } |
60 | *out = '\0'; |
61 | return; |
62 | } |
63 | |
c85623f9 |
64 | void *open_settings_w(const char *sessionname) |
32874aea |
65 | { |
d1622aed |
66 | HKEY subkey1, sesskey; |
67 | int ret; |
68 | char *p; |
69 | |
90bf4cce |
70 | if (!sessionname || !*sessionname) |
71 | sessionname = "Default Settings"; |
72 | |
3d88e64d |
73 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
74 | mungestr(sessionname, p); |
32874aea |
75 | |
d1622aed |
76 | ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1); |
77 | if (ret != ERROR_SUCCESS) { |
32874aea |
78 | sfree(p); |
79 | return NULL; |
d1622aed |
80 | } |
81 | ret = RegCreateKey(subkey1, p, &sesskey); |
dcbde236 |
82 | sfree(p); |
d1622aed |
83 | RegCloseKey(subkey1); |
84 | if (ret != ERROR_SUCCESS) |
32874aea |
85 | return NULL; |
86 | return (void *) sesskey; |
d1622aed |
87 | } |
88 | |
c85623f9 |
89 | void write_setting_s(void *handle, const char *key, const char *value) |
32874aea |
90 | { |
d1622aed |
91 | if (handle) |
32874aea |
92 | RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value, |
93 | 1 + strlen(value)); |
d1622aed |
94 | } |
95 | |
c85623f9 |
96 | void write_setting_i(void *handle, const char *key, int value) |
32874aea |
97 | { |
d1622aed |
98 | if (handle) |
32874aea |
99 | RegSetValueEx((HKEY) handle, key, 0, REG_DWORD, |
100 | (CONST BYTE *) & value, sizeof(value)); |
d1622aed |
101 | } |
102 | |
32874aea |
103 | void close_settings_w(void *handle) |
104 | { |
105 | RegCloseKey((HKEY) handle); |
d1622aed |
106 | } |
107 | |
c85623f9 |
108 | void *open_settings_r(const char *sessionname) |
32874aea |
109 | { |
d1622aed |
110 | HKEY subkey1, sesskey; |
111 | char *p; |
112 | |
90bf4cce |
113 | if (!sessionname || !*sessionname) |
114 | sessionname = "Default Settings"; |
115 | |
3d88e64d |
116 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
117 | mungestr(sessionname, p); |
118 | |
119 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) { |
120 | sesskey = NULL; |
121 | } else { |
122 | if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) { |
123 | sesskey = NULL; |
124 | } |
125 | RegCloseKey(subkey1); |
126 | } |
127 | |
dcbde236 |
128 | sfree(p); |
d1622aed |
129 | |
32874aea |
130 | return (void *) sesskey; |
d1622aed |
131 | } |
132 | |
c85623f9 |
133 | char *read_setting_s(void *handle, const char *key, char *buffer, int buflen) |
32874aea |
134 | { |
d1622aed |
135 | DWORD type, size; |
136 | size = buflen; |
137 | |
138 | if (!handle || |
32874aea |
139 | RegQueryValueEx((HKEY) handle, key, 0, |
140 | &type, buffer, &size) != ERROR_SUCCESS || |
141 | type != REG_SZ) return NULL; |
d1622aed |
142 | else |
32874aea |
143 | return buffer; |
d1622aed |
144 | } |
d5859615 |
145 | |
c85623f9 |
146 | int read_setting_i(void *handle, const char *key, int defvalue) |
32874aea |
147 | { |
d1622aed |
148 | DWORD type, val, size; |
149 | size = sizeof(val); |
150 | |
151 | if (!handle || |
32874aea |
152 | RegQueryValueEx((HKEY) handle, key, 0, &type, |
153 | (BYTE *) & val, &size) != ERROR_SUCCESS || |
d1622aed |
154 | size != sizeof(val) || type != REG_DWORD) |
155 | return defvalue; |
156 | else |
157 | return val; |
158 | } |
159 | |
9a30e26b |
160 | int read_setting_fontspec(void *handle, const char *name, FontSpec *result) |
161 | { |
162 | char *settingname; |
163 | FontSpec ret; |
164 | |
165 | if (!read_setting_s(handle, name, ret.name, sizeof(ret.name))) |
166 | return 0; |
167 | settingname = dupcat(name, "IsBold", NULL); |
168 | ret.isbold = read_setting_i(handle, settingname, -1); |
169 | sfree(settingname); |
170 | if (ret.isbold == -1) return 0; |
171 | settingname = dupcat(name, "CharSet", NULL); |
172 | ret.charset = read_setting_i(handle, settingname, -1); |
173 | sfree(settingname); |
174 | if (ret.charset == -1) return 0; |
175 | settingname = dupcat(name, "Height", NULL); |
176 | ret.height = read_setting_i(handle, settingname, INT_MIN); |
177 | sfree(settingname); |
178 | if (ret.height == INT_MIN) return 0; |
179 | if (ret.height < 0) { |
180 | int oldh, newh; |
181 | HDC hdc = GetDC(NULL); |
182 | int logpix = GetDeviceCaps(hdc, LOGPIXELSY); |
183 | ReleaseDC(NULL, hdc); |
184 | |
185 | oldh = -ret.height; |
186 | newh = MulDiv(oldh, 72, logpix) + 1; |
187 | if (MulDiv(newh, logpix, 72) > oldh) |
188 | newh--; |
189 | ret.height = newh; |
190 | } |
191 | *result = ret; |
192 | return 1; |
193 | } |
194 | |
195 | void write_setting_fontspec(void *handle, const char *name, FontSpec font) |
196 | { |
197 | char *settingname; |
198 | |
199 | write_setting_s(handle, name, font.name); |
200 | settingname = dupcat(name, "IsBold", NULL); |
201 | write_setting_i(handle, settingname, font.isbold); |
202 | sfree(settingname); |
203 | settingname = dupcat(name, "CharSet", NULL); |
204 | write_setting_i(handle, settingname, font.charset); |
205 | sfree(settingname); |
206 | settingname = dupcat(name, "Height", NULL); |
207 | write_setting_i(handle, settingname, font.height); |
208 | sfree(settingname); |
209 | } |
210 | |
211 | int read_setting_filename(void *handle, const char *name, Filename *result) |
212 | { |
213 | return !!read_setting_s(handle, name, result->path, sizeof(result->path)); |
214 | } |
215 | |
216 | void write_setting_filename(void *handle, const char *name, Filename result) |
217 | { |
218 | write_setting_s(handle, name, result.path); |
219 | } |
220 | |
32874aea |
221 | void close_settings_r(void *handle) |
222 | { |
223 | RegCloseKey((HKEY) handle); |
d1622aed |
224 | } |
225 | |
c85623f9 |
226 | void del_settings(const char *sessionname) |
32874aea |
227 | { |
d1622aed |
228 | HKEY subkey1; |
229 | char *p; |
230 | |
231 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) |
232 | return; |
233 | |
3d88e64d |
234 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
235 | mungestr(sessionname, p); |
236 | RegDeleteKey(subkey1, p); |
dcbde236 |
237 | sfree(p); |
d1622aed |
238 | |
239 | RegCloseKey(subkey1); |
240 | } |
d5859615 |
241 | |
d1622aed |
242 | struct enumsettings { |
243 | HKEY key; |
244 | int i; |
245 | }; |
246 | |
32874aea |
247 | void *enum_settings_start(void) |
248 | { |
d1622aed |
249 | struct enumsettings *ret; |
250 | HKEY key; |
251 | |
5f2df4d2 |
252 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS) |
32874aea |
253 | return NULL; |
d1622aed |
254 | |
3d88e64d |
255 | ret = snew(struct enumsettings); |
d1622aed |
256 | if (ret) { |
32874aea |
257 | ret->key = key; |
258 | ret->i = 0; |
d1622aed |
259 | } |
260 | |
261 | return ret; |
262 | } |
263 | |
32874aea |
264 | char *enum_settings_next(void *handle, char *buffer, int buflen) |
265 | { |
266 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
267 | char *otherbuf; |
3d88e64d |
268 | otherbuf = snewn(3 * buflen, char); |
60371ab3 |
269 | if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) { |
32874aea |
270 | unmungestr(otherbuf, buffer, buflen); |
271 | sfree(otherbuf); |
272 | return buffer; |
60371ab3 |
273 | } else { |
274 | sfree(otherbuf); |
32874aea |
275 | return NULL; |
60371ab3 |
276 | } |
d1622aed |
277 | } |
278 | |
32874aea |
279 | void enum_settings_finish(void *handle) |
280 | { |
281 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
282 | RegCloseKey(e->key); |
dcbde236 |
283 | sfree(e); |
d1622aed |
284 | } |
285 | |
c85623f9 |
286 | static void hostkey_regname(char *buffer, const char *hostname, |
287 | int port, const char *keytype) |
32874aea |
288 | { |
d4857987 |
289 | int len; |
290 | strcpy(buffer, keytype); |
291 | strcat(buffer, "@"); |
292 | len = strlen(buffer); |
32874aea |
293 | len += sprintf(buffer + len, "%d:", port); |
d4857987 |
294 | mungestr(hostname, buffer + strlen(buffer)); |
295 | } |
296 | |
c85623f9 |
297 | int verify_host_key(const char *hostname, int port, |
298 | const char *keytype, const char *key) |
32874aea |
299 | { |
d5859615 |
300 | char *otherstr, *regname; |
301 | int len; |
302 | HKEY rkey; |
303 | DWORD readlen; |
304 | DWORD type; |
305 | int ret, compare; |
306 | |
307 | len = 1 + strlen(key); |
308 | |
309 | /* |
310 | * Now read a saved key in from the registry and see what it |
311 | * says. |
312 | */ |
3d88e64d |
313 | otherstr = snewn(len, char); |
314 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
315 | |
d4857987 |
316 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
317 | |
5f2df4d2 |
318 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
319 | &rkey) != ERROR_SUCCESS) |
32874aea |
320 | return 1; /* key does not exist in registry */ |
d5859615 |
321 | |
322 | readlen = len; |
323 | ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen); |
324 | |
325 | if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA && |
32874aea |
326 | !strcmp(keytype, "rsa")) { |
327 | /* |
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. |
331 | */ |
332 | char *justhost = regname + 1 + strcspn(regname, ":"); |
3d88e64d |
333 | char *oldstyle = snewn(len + 10, char); /* safety margin */ |
32874aea |
334 | readlen = len; |
335 | ret = RegQueryValueEx(rkey, justhost, NULL, &type, |
336 | oldstyle, &readlen); |
337 | |
338 | if (ret == ERROR_SUCCESS && type == REG_SZ) { |
339 | /* |
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. |
350 | */ |
351 | char *p = otherstr; |
352 | char *q = oldstyle; |
353 | int i, j; |
354 | |
355 | for (i = 0; i < 2; i++) { |
356 | int ndigits, nwords; |
357 | *p++ = '0'; |
358 | *p++ = 'x'; |
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) |
363 | ndigits--; |
364 | /* now move digits over to new string */ |
365 | for (j = 0; j < ndigits; j++) |
366 | p[ndigits - 1 - j] = q[j ^ 3]; |
367 | p += ndigits; |
368 | q += nwords * 4; |
369 | if (*q) { |
370 | q++; /* eat the slash */ |
371 | *p++ = ','; /* add a comma */ |
372 | } |
373 | *p = '\0'; /* terminate the string */ |
374 | } |
375 | |
376 | /* |
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. |
380 | */ |
381 | if (!strcmp(otherstr, key)) |
382 | RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr, |
383 | strlen(otherstr) + 1); |
384 | } |
d5859615 |
385 | } |
386 | |
387 | RegCloseKey(rkey); |
388 | |
389 | compare = strcmp(otherstr, key); |
390 | |
391 | sfree(otherstr); |
392 | sfree(regname); |
393 | |
394 | if (ret == ERROR_MORE_DATA || |
32874aea |
395 | (ret == ERROR_SUCCESS && type == REG_SZ && compare)) |
396 | return 2; /* key is different in registry */ |
d5859615 |
397 | else if (ret != ERROR_SUCCESS || type != REG_SZ) |
32874aea |
398 | return 1; /* key does not exist in registry */ |
d5859615 |
399 | else |
32874aea |
400 | return 0; /* key matched OK in registry */ |
d5859615 |
401 | } |
402 | |
c85623f9 |
403 | void store_host_key(const char *hostname, int port, |
404 | const char *keytype, const char *key) |
32874aea |
405 | { |
d5859615 |
406 | char *regname; |
407 | HKEY rkey; |
408 | |
3d88e64d |
409 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
410 | |
d4857987 |
411 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
412 | |
413 | if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
414 | &rkey) != ERROR_SUCCESS) |
32874aea |
415 | return; /* key does not exist in registry */ |
416 | RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1); |
d5859615 |
417 | RegCloseKey(rkey); |
418 | } |
419 | |
420 | /* |
421 | * Find the random seed file path and store it in `seedpath'. |
422 | */ |
32874aea |
423 | static void get_seedpath(void) |
424 | { |
d5859615 |
425 | HKEY rkey; |
426 | DWORD type, size; |
427 | |
428 | size = sizeof(seedpath); |
429 | |
32874aea |
430 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) == |
431 | ERROR_SUCCESS) { |
d5859615 |
432 | int ret = RegQueryValueEx(rkey, "RandSeedFile", |
433 | 0, &type, seedpath, &size); |
434 | if (ret != ERROR_SUCCESS || type != REG_SZ) |
435 | seedpath[0] = '\0'; |
436 | RegCloseKey(rkey); |
437 | } else |
438 | seedpath[0] = '\0'; |
439 | |
440 | if (!seedpath[0]) { |
441 | int len, ret; |
442 | |
32874aea |
443 | len = |
444 | GetEnvironmentVariable("HOMEDRIVE", seedpath, |
445 | sizeof(seedpath)); |
446 | ret = |
447 | GetEnvironmentVariable("HOMEPATH", seedpath + len, |
448 | sizeof(seedpath) - len); |
d5859615 |
449 | if (ret == 0) { /* probably win95; store in \WINDOWS */ |
450 | GetWindowsDirectory(seedpath, sizeof(seedpath)); |
451 | len = strlen(seedpath); |
452 | } else |
453 | len += ret; |
32874aea |
454 | strcpy(seedpath + len, "\\PUTTY.RND"); |
d5859615 |
455 | } |
456 | } |
457 | |
32874aea |
458 | void read_random_seed(noise_consumer_t consumer) |
459 | { |
d5859615 |
460 | HANDLE seedf; |
461 | |
462 | if (!seedpath[0]) |
463 | get_seedpath(); |
464 | |
465 | seedf = CreateFile(seedpath, GENERIC_READ, |
466 | FILE_SHARE_READ | FILE_SHARE_WRITE, |
467 | NULL, OPEN_EXISTING, 0, NULL); |
468 | |
469 | if (seedf != INVALID_HANDLE_VALUE) { |
470 | while (1) { |
471 | char buf[1024]; |
472 | DWORD len; |
473 | |
474 | if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len) |
32874aea |
475 | consumer(buf, len); |
d5859615 |
476 | else |
477 | break; |
478 | } |
479 | CloseHandle(seedf); |
480 | } |
481 | } |
482 | |
32874aea |
483 | void write_random_seed(void *data, int len) |
484 | { |
d5859615 |
485 | HANDLE seedf; |
486 | |
487 | if (!seedpath[0]) |
488 | get_seedpath(); |
489 | |
490 | seedf = CreateFile(seedpath, GENERIC_WRITE, 0, |
491 | NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
492 | |
493 | if (seedf != INVALID_HANDLE_VALUE) { |
494 | DWORD lenwritten; |
495 | |
496 | WriteFile(seedf, data, len, &lenwritten, NULL); |
497 | CloseHandle(seedf); |
498 | } |
499 | } |
500 | |
501 | /* |
502 | * Recursively delete a registry key and everything under it. |
503 | */ |
32874aea |
504 | static void registry_recursive_remove(HKEY key) |
505 | { |
d5859615 |
506 | DWORD i; |
32874aea |
507 | char name[MAX_PATH + 1]; |
d5859615 |
508 | HKEY subkey; |
509 | |
510 | i = 0; |
511 | while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) { |
32874aea |
512 | if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) { |
513 | registry_recursive_remove(subkey); |
514 | RegCloseKey(subkey); |
515 | } |
516 | RegDeleteKey(key, name); |
d5859615 |
517 | } |
518 | } |
519 | |
32874aea |
520 | void cleanup_all(void) |
521 | { |
d5859615 |
522 | HKEY key; |
523 | int ret; |
32874aea |
524 | char name[MAX_PATH + 1]; |
d5859615 |
525 | |
526 | /* ------------------------------------------------------------ |
527 | * Wipe out the random seed file. |
528 | */ |
529 | if (!seedpath[0]) |
530 | get_seedpath(); |
531 | remove(seedpath); |
532 | |
533 | /* ------------------------------------------------------------ |
534 | * Destroy all registry information associated with PuTTY. |
535 | */ |
536 | |
537 | /* |
538 | * Open the main PuTTY registry key and remove everything in it. |
539 | */ |
32874aea |
540 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) == |
541 | ERROR_SUCCESS) { |
542 | registry_recursive_remove(key); |
543 | RegCloseKey(key); |
d5859615 |
544 | } |
545 | /* |
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 |
548 | * children. |
549 | */ |
550 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT, |
32874aea |
551 | &key) == ERROR_SUCCESS) { |
552 | RegDeleteKey(key, PUTTY_REG_PARENT_CHILD); |
553 | ret = RegEnumKey(key, 0, name, sizeof(name)); |
554 | RegCloseKey(key); |
555 | /* |
556 | * If the parent key had no other children, we must delete |
557 | * it in its turn. That means opening the _grandparent_ |
558 | * key. |
559 | */ |
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); |
564 | RegCloseKey(key); |
565 | } |
566 | } |
d5859615 |
567 | } |
568 | /* |
569 | * Now we're done. |
570 | */ |
571 | } |