d5859615 |
1 | /* |
2 | * winstore.c: Windows-specific implementation of the interface |
3 | * defined in storage.h. |
4 | */ |
5 | |
d5859615 |
6 | #include <stdio.h> |
49bad831 |
7 | #include <stdlib.h> |
9a30e26b |
8 | #include <limits.h> |
d5859615 |
9 | #include "putty.h" |
10 | #include "storage.h" |
11 | |
d1622aed |
12 | static const char *const puttystr = PUTTY_REG_POS "\\Sessions"; |
13 | |
32874aea |
14 | static char seedpath[2 * MAX_PATH + 10] = "\0"; |
d5859615 |
15 | |
c85623f9 |
16 | static const char hex[16] = "0123456789ABCDEF"; |
d5859615 |
17 | |
c85623f9 |
18 | static void mungestr(const char *in, char *out) |
32874aea |
19 | { |
d5859615 |
20 | int candot = 0; |
21 | |
22 | while (*in) { |
23 | if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' || |
32874aea |
24 | *in == '%' || *in < ' ' || *in > '~' || (*in == '.' |
25 | && !candot)) { |
d5859615 |
26 | *out++ = '%'; |
32874aea |
27 | *out++ = hex[((unsigned char) *in) >> 4]; |
28 | *out++ = hex[((unsigned char) *in) & 15]; |
d5859615 |
29 | } else |
30 | *out++ = *in; |
31 | in++; |
32 | candot = 1; |
33 | } |
34 | *out = '\0'; |
35 | return; |
36 | } |
37 | |
c85623f9 |
38 | static void unmungestr(const char *in, char *out, int outlen) |
32874aea |
39 | { |
d5859615 |
40 | while (*in) { |
41 | if (*in == '%' && in[1] && in[2]) { |
42 | int i, j; |
43 | |
32874aea |
44 | i = in[1] - '0'; |
45 | i -= (i > 9 ? 7 : 0); |
46 | j = in[2] - '0'; |
47 | j -= (j > 9 ? 7 : 0); |
d5859615 |
48 | |
32874aea |
49 | *out++ = (i << 4) + j; |
50 | if (!--outlen) |
51 | return; |
d5859615 |
52 | in += 3; |
d1622aed |
53 | } else { |
d5859615 |
54 | *out++ = *in++; |
32874aea |
55 | if (!--outlen) |
56 | return; |
57 | } |
d5859615 |
58 | } |
59 | *out = '\0'; |
60 | return; |
61 | } |
62 | |
3f935d5b |
63 | void *open_settings_w(const char *sessionname, char **errmsg) |
32874aea |
64 | { |
d1622aed |
65 | HKEY subkey1, sesskey; |
66 | int ret; |
67 | char *p; |
68 | |
3f935d5b |
69 | *errmsg = NULL; |
70 | |
90bf4cce |
71 | if (!sessionname || !*sessionname) |
72 | sessionname = "Default Settings"; |
73 | |
3d88e64d |
74 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
75 | mungestr(sessionname, p); |
32874aea |
76 | |
d1622aed |
77 | ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1); |
78 | if (ret != ERROR_SUCCESS) { |
32874aea |
79 | sfree(p); |
3f935d5b |
80 | *errmsg = dupprintf("Unable to create registry key\n" |
81 | "HKEY_CURRENT_USER%s", puttystr); |
32874aea |
82 | return NULL; |
d1622aed |
83 | } |
84 | ret = RegCreateKey(subkey1, p, &sesskey); |
dcbde236 |
85 | sfree(p); |
d1622aed |
86 | RegCloseKey(subkey1); |
3f935d5b |
87 | if (ret != ERROR_SUCCESS) { |
88 | *errmsg = dupprintf("Unable to create registry key\n" |
89 | "HKEY_CURRENT_USER%s\\%s", puttystr, p); |
32874aea |
90 | return NULL; |
3f935d5b |
91 | } |
32874aea |
92 | return (void *) sesskey; |
d1622aed |
93 | } |
94 | |
c85623f9 |
95 | void write_setting_s(void *handle, const char *key, const char *value) |
32874aea |
96 | { |
d1622aed |
97 | if (handle) |
32874aea |
98 | RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value, |
99 | 1 + strlen(value)); |
d1622aed |
100 | } |
101 | |
c85623f9 |
102 | void write_setting_i(void *handle, const char *key, int value) |
32874aea |
103 | { |
d1622aed |
104 | if (handle) |
32874aea |
105 | RegSetValueEx((HKEY) handle, key, 0, REG_DWORD, |
106 | (CONST BYTE *) & value, sizeof(value)); |
d1622aed |
107 | } |
108 | |
32874aea |
109 | void close_settings_w(void *handle) |
110 | { |
111 | RegCloseKey((HKEY) handle); |
d1622aed |
112 | } |
113 | |
c85623f9 |
114 | void *open_settings_r(const char *sessionname) |
32874aea |
115 | { |
d1622aed |
116 | HKEY subkey1, sesskey; |
117 | char *p; |
118 | |
90bf4cce |
119 | if (!sessionname || !*sessionname) |
120 | sessionname = "Default Settings"; |
121 | |
3d88e64d |
122 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
123 | mungestr(sessionname, p); |
124 | |
125 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) { |
126 | sesskey = NULL; |
127 | } else { |
128 | if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) { |
129 | sesskey = NULL; |
130 | } |
131 | RegCloseKey(subkey1); |
132 | } |
133 | |
dcbde236 |
134 | sfree(p); |
d1622aed |
135 | |
32874aea |
136 | return (void *) sesskey; |
d1622aed |
137 | } |
138 | |
c85623f9 |
139 | char *read_setting_s(void *handle, const char *key, char *buffer, int buflen) |
32874aea |
140 | { |
d1622aed |
141 | DWORD type, size; |
142 | size = buflen; |
143 | |
144 | if (!handle || |
32874aea |
145 | RegQueryValueEx((HKEY) handle, key, 0, |
146 | &type, buffer, &size) != ERROR_SUCCESS || |
147 | type != REG_SZ) return NULL; |
d1622aed |
148 | else |
32874aea |
149 | return buffer; |
d1622aed |
150 | } |
d5859615 |
151 | |
c85623f9 |
152 | int read_setting_i(void *handle, const char *key, int defvalue) |
32874aea |
153 | { |
d1622aed |
154 | DWORD type, val, size; |
155 | size = sizeof(val); |
156 | |
157 | if (!handle || |
32874aea |
158 | RegQueryValueEx((HKEY) handle, key, 0, &type, |
159 | (BYTE *) & val, &size) != ERROR_SUCCESS || |
d1622aed |
160 | size != sizeof(val) || type != REG_DWORD) |
161 | return defvalue; |
162 | else |
163 | return val; |
164 | } |
165 | |
9a30e26b |
166 | int read_setting_fontspec(void *handle, const char *name, FontSpec *result) |
167 | { |
168 | char *settingname; |
169 | FontSpec ret; |
170 | |
171 | if (!read_setting_s(handle, name, ret.name, sizeof(ret.name))) |
172 | return 0; |
173 | settingname = dupcat(name, "IsBold", NULL); |
174 | ret.isbold = read_setting_i(handle, settingname, -1); |
175 | sfree(settingname); |
176 | if (ret.isbold == -1) return 0; |
177 | settingname = dupcat(name, "CharSet", NULL); |
178 | ret.charset = read_setting_i(handle, settingname, -1); |
179 | sfree(settingname); |
180 | if (ret.charset == -1) return 0; |
181 | settingname = dupcat(name, "Height", NULL); |
182 | ret.height = read_setting_i(handle, settingname, INT_MIN); |
183 | sfree(settingname); |
184 | if (ret.height == INT_MIN) return 0; |
9a30e26b |
185 | *result = ret; |
186 | return 1; |
187 | } |
188 | |
189 | void write_setting_fontspec(void *handle, const char *name, FontSpec font) |
190 | { |
191 | char *settingname; |
192 | |
193 | write_setting_s(handle, name, font.name); |
194 | settingname = dupcat(name, "IsBold", NULL); |
195 | write_setting_i(handle, settingname, font.isbold); |
196 | sfree(settingname); |
197 | settingname = dupcat(name, "CharSet", NULL); |
198 | write_setting_i(handle, settingname, font.charset); |
199 | sfree(settingname); |
200 | settingname = dupcat(name, "Height", NULL); |
201 | write_setting_i(handle, settingname, font.height); |
202 | sfree(settingname); |
203 | } |
204 | |
205 | int read_setting_filename(void *handle, const char *name, Filename *result) |
206 | { |
207 | return !!read_setting_s(handle, name, result->path, sizeof(result->path)); |
208 | } |
209 | |
210 | void write_setting_filename(void *handle, const char *name, Filename result) |
211 | { |
212 | write_setting_s(handle, name, result.path); |
213 | } |
214 | |
32874aea |
215 | void close_settings_r(void *handle) |
216 | { |
217 | RegCloseKey((HKEY) handle); |
d1622aed |
218 | } |
219 | |
c85623f9 |
220 | void del_settings(const char *sessionname) |
32874aea |
221 | { |
d1622aed |
222 | HKEY subkey1; |
223 | char *p; |
224 | |
225 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) |
226 | return; |
227 | |
3d88e64d |
228 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
229 | mungestr(sessionname, p); |
230 | RegDeleteKey(subkey1, p); |
dcbde236 |
231 | sfree(p); |
d1622aed |
232 | |
233 | RegCloseKey(subkey1); |
234 | } |
d5859615 |
235 | |
d1622aed |
236 | struct enumsettings { |
237 | HKEY key; |
238 | int i; |
239 | }; |
240 | |
32874aea |
241 | void *enum_settings_start(void) |
242 | { |
d1622aed |
243 | struct enumsettings *ret; |
244 | HKEY key; |
245 | |
5f2df4d2 |
246 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS) |
32874aea |
247 | return NULL; |
d1622aed |
248 | |
3d88e64d |
249 | ret = snew(struct enumsettings); |
d1622aed |
250 | if (ret) { |
32874aea |
251 | ret->key = key; |
252 | ret->i = 0; |
d1622aed |
253 | } |
254 | |
255 | return ret; |
256 | } |
257 | |
32874aea |
258 | char *enum_settings_next(void *handle, char *buffer, int buflen) |
259 | { |
260 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
261 | char *otherbuf; |
3d88e64d |
262 | otherbuf = snewn(3 * buflen, char); |
60371ab3 |
263 | if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) { |
32874aea |
264 | unmungestr(otherbuf, buffer, buflen); |
265 | sfree(otherbuf); |
266 | return buffer; |
60371ab3 |
267 | } else { |
268 | sfree(otherbuf); |
32874aea |
269 | return NULL; |
60371ab3 |
270 | } |
d1622aed |
271 | } |
272 | |
32874aea |
273 | void enum_settings_finish(void *handle) |
274 | { |
275 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
276 | RegCloseKey(e->key); |
dcbde236 |
277 | sfree(e); |
d1622aed |
278 | } |
279 | |
c85623f9 |
280 | static void hostkey_regname(char *buffer, const char *hostname, |
281 | int port, const char *keytype) |
32874aea |
282 | { |
d4857987 |
283 | int len; |
284 | strcpy(buffer, keytype); |
285 | strcat(buffer, "@"); |
286 | len = strlen(buffer); |
32874aea |
287 | len += sprintf(buffer + len, "%d:", port); |
d4857987 |
288 | mungestr(hostname, buffer + strlen(buffer)); |
289 | } |
290 | |
c85623f9 |
291 | int verify_host_key(const char *hostname, int port, |
292 | const char *keytype, const char *key) |
32874aea |
293 | { |
d5859615 |
294 | char *otherstr, *regname; |
295 | int len; |
296 | HKEY rkey; |
297 | DWORD readlen; |
298 | DWORD type; |
299 | int ret, compare; |
300 | |
301 | len = 1 + strlen(key); |
302 | |
303 | /* |
304 | * Now read a saved key in from the registry and see what it |
305 | * says. |
306 | */ |
3d88e64d |
307 | otherstr = snewn(len, char); |
308 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
309 | |
d4857987 |
310 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
311 | |
5f2df4d2 |
312 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
313 | &rkey) != ERROR_SUCCESS) |
32874aea |
314 | return 1; /* key does not exist in registry */ |
d5859615 |
315 | |
316 | readlen = len; |
317 | ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen); |
318 | |
319 | if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA && |
32874aea |
320 | !strcmp(keytype, "rsa")) { |
321 | /* |
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. |
325 | */ |
326 | char *justhost = regname + 1 + strcspn(regname, ":"); |
3d88e64d |
327 | char *oldstyle = snewn(len + 10, char); /* safety margin */ |
32874aea |
328 | readlen = len; |
329 | ret = RegQueryValueEx(rkey, justhost, NULL, &type, |
330 | oldstyle, &readlen); |
331 | |
332 | if (ret == ERROR_SUCCESS && type == REG_SZ) { |
333 | /* |
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. |
344 | */ |
345 | char *p = otherstr; |
346 | char *q = oldstyle; |
347 | int i, j; |
348 | |
349 | for (i = 0; i < 2; i++) { |
350 | int ndigits, nwords; |
351 | *p++ = '0'; |
352 | *p++ = 'x'; |
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) |
357 | ndigits--; |
358 | /* now move digits over to new string */ |
359 | for (j = 0; j < ndigits; j++) |
360 | p[ndigits - 1 - j] = q[j ^ 3]; |
361 | p += ndigits; |
362 | q += nwords * 4; |
363 | if (*q) { |
364 | q++; /* eat the slash */ |
365 | *p++ = ','; /* add a comma */ |
366 | } |
367 | *p = '\0'; /* terminate the string */ |
368 | } |
369 | |
370 | /* |
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. |
374 | */ |
375 | if (!strcmp(otherstr, key)) |
376 | RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr, |
377 | strlen(otherstr) + 1); |
378 | } |
d5859615 |
379 | } |
380 | |
381 | RegCloseKey(rkey); |
382 | |
383 | compare = strcmp(otherstr, key); |
384 | |
385 | sfree(otherstr); |
386 | sfree(regname); |
387 | |
388 | if (ret == ERROR_MORE_DATA || |
32874aea |
389 | (ret == ERROR_SUCCESS && type == REG_SZ && compare)) |
390 | return 2; /* key is different in registry */ |
d5859615 |
391 | else if (ret != ERROR_SUCCESS || type != REG_SZ) |
32874aea |
392 | return 1; /* key does not exist in registry */ |
d5859615 |
393 | else |
32874aea |
394 | return 0; /* key matched OK in registry */ |
d5859615 |
395 | } |
396 | |
c85623f9 |
397 | void store_host_key(const char *hostname, int port, |
398 | const char *keytype, const char *key) |
32874aea |
399 | { |
d5859615 |
400 | char *regname; |
401 | HKEY rkey; |
402 | |
3d88e64d |
403 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
404 | |
d4857987 |
405 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
406 | |
407 | if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
408 | &rkey) != ERROR_SUCCESS) |
32874aea |
409 | return; /* key does not exist in registry */ |
410 | RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1); |
d5859615 |
411 | RegCloseKey(rkey); |
412 | } |
413 | |
414 | /* |
415 | * Find the random seed file path and store it in `seedpath'. |
416 | */ |
32874aea |
417 | static void get_seedpath(void) |
418 | { |
d5859615 |
419 | HKEY rkey; |
420 | DWORD type, size; |
421 | |
422 | size = sizeof(seedpath); |
423 | |
32874aea |
424 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) == |
425 | ERROR_SUCCESS) { |
d5859615 |
426 | int ret = RegQueryValueEx(rkey, "RandSeedFile", |
427 | 0, &type, seedpath, &size); |
428 | if (ret != ERROR_SUCCESS || type != REG_SZ) |
429 | seedpath[0] = '\0'; |
430 | RegCloseKey(rkey); |
431 | } else |
432 | seedpath[0] = '\0'; |
433 | |
434 | if (!seedpath[0]) { |
435 | int len, ret; |
436 | |
32874aea |
437 | len = |
438 | GetEnvironmentVariable("HOMEDRIVE", seedpath, |
439 | sizeof(seedpath)); |
440 | ret = |
441 | GetEnvironmentVariable("HOMEPATH", seedpath + len, |
442 | sizeof(seedpath) - len); |
d5859615 |
443 | if (ret == 0) { /* probably win95; store in \WINDOWS */ |
444 | GetWindowsDirectory(seedpath, sizeof(seedpath)); |
445 | len = strlen(seedpath); |
446 | } else |
447 | len += ret; |
32874aea |
448 | strcpy(seedpath + len, "\\PUTTY.RND"); |
d5859615 |
449 | } |
450 | } |
451 | |
32874aea |
452 | void read_random_seed(noise_consumer_t consumer) |
453 | { |
d5859615 |
454 | HANDLE seedf; |
455 | |
456 | if (!seedpath[0]) |
457 | get_seedpath(); |
458 | |
459 | seedf = CreateFile(seedpath, GENERIC_READ, |
460 | FILE_SHARE_READ | FILE_SHARE_WRITE, |
461 | NULL, OPEN_EXISTING, 0, NULL); |
462 | |
463 | if (seedf != INVALID_HANDLE_VALUE) { |
464 | while (1) { |
465 | char buf[1024]; |
466 | DWORD len; |
467 | |
468 | if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len) |
32874aea |
469 | consumer(buf, len); |
d5859615 |
470 | else |
471 | break; |
472 | } |
473 | CloseHandle(seedf); |
474 | } |
475 | } |
476 | |
32874aea |
477 | void write_random_seed(void *data, int len) |
478 | { |
d5859615 |
479 | HANDLE seedf; |
480 | |
481 | if (!seedpath[0]) |
482 | get_seedpath(); |
483 | |
484 | seedf = CreateFile(seedpath, GENERIC_WRITE, 0, |
485 | NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
486 | |
487 | if (seedf != INVALID_HANDLE_VALUE) { |
488 | DWORD lenwritten; |
489 | |
490 | WriteFile(seedf, data, len, &lenwritten, NULL); |
491 | CloseHandle(seedf); |
492 | } |
493 | } |
494 | |
495 | /* |
496 | * Recursively delete a registry key and everything under it. |
497 | */ |
32874aea |
498 | static void registry_recursive_remove(HKEY key) |
499 | { |
d5859615 |
500 | DWORD i; |
32874aea |
501 | char name[MAX_PATH + 1]; |
d5859615 |
502 | HKEY subkey; |
503 | |
504 | i = 0; |
505 | while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) { |
32874aea |
506 | if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) { |
507 | registry_recursive_remove(subkey); |
508 | RegCloseKey(subkey); |
509 | } |
510 | RegDeleteKey(key, name); |
d5859615 |
511 | } |
512 | } |
513 | |
32874aea |
514 | void cleanup_all(void) |
515 | { |
d5859615 |
516 | HKEY key; |
517 | int ret; |
32874aea |
518 | char name[MAX_PATH + 1]; |
d5859615 |
519 | |
520 | /* ------------------------------------------------------------ |
521 | * Wipe out the random seed file. |
522 | */ |
523 | if (!seedpath[0]) |
524 | get_seedpath(); |
525 | remove(seedpath); |
526 | |
527 | /* ------------------------------------------------------------ |
528 | * Destroy all registry information associated with PuTTY. |
529 | */ |
530 | |
531 | /* |
532 | * Open the main PuTTY registry key and remove everything in it. |
533 | */ |
32874aea |
534 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) == |
535 | ERROR_SUCCESS) { |
536 | registry_recursive_remove(key); |
537 | RegCloseKey(key); |
d5859615 |
538 | } |
539 | /* |
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 |
542 | * children. |
543 | */ |
544 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT, |
32874aea |
545 | &key) == ERROR_SUCCESS) { |
546 | RegDeleteKey(key, PUTTY_REG_PARENT_CHILD); |
547 | ret = RegEnumKey(key, 0, name, sizeof(name)); |
548 | RegCloseKey(key); |
549 | /* |
550 | * If the parent key had no other children, we must delete |
551 | * it in its turn. That means opening the _grandparent_ |
552 | * key. |
553 | */ |
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); |
558 | RegCloseKey(key); |
559 | } |
560 | } |
d5859615 |
561 | } |
562 | /* |
563 | * Now we're done. |
564 | */ |
565 | } |