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 | |
7bccf0fe |
12 | #include <shlobj.h> |
13 | #ifndef CSIDL_APPDATA |
14 | #define CSIDL_APPDATA 0x001a |
15 | #endif |
16 | #ifndef CSIDL_LOCAL_APPDATA |
17 | #define CSIDL_LOCAL_APPDATA 0x001c |
18 | #endif |
d1622aed |
19 | |
073e9f42 |
20 | static const char *const reg_jumplist_key = PUTTY_REG_POS "\\Jumplist"; |
21 | static const char *const reg_jumplist_value = "Recent sessions"; |
7bccf0fe |
22 | static const char *const puttystr = PUTTY_REG_POS "\\Sessions"; |
d5859615 |
23 | |
c85623f9 |
24 | static const char hex[16] = "0123456789ABCDEF"; |
d5859615 |
25 | |
7bccf0fe |
26 | static int tried_shgetfolderpath = FALSE; |
27 | static HMODULE shell32_module = NULL; |
9099600a |
28 | DECL_WINDOWS_FUNCTION(static, HRESULT, SHGetFolderPathA, |
29 | (HWND, int, HANDLE, DWORD, LPSTR)); |
7bccf0fe |
30 | |
c85623f9 |
31 | static void mungestr(const char *in, char *out) |
32874aea |
32 | { |
d5859615 |
33 | int candot = 0; |
34 | |
35 | while (*in) { |
36 | if (*in == ' ' || *in == '\\' || *in == '*' || *in == '?' || |
32874aea |
37 | *in == '%' || *in < ' ' || *in > '~' || (*in == '.' |
38 | && !candot)) { |
d5859615 |
39 | *out++ = '%'; |
32874aea |
40 | *out++ = hex[((unsigned char) *in) >> 4]; |
41 | *out++ = hex[((unsigned char) *in) & 15]; |
d5859615 |
42 | } else |
43 | *out++ = *in; |
44 | in++; |
45 | candot = 1; |
46 | } |
47 | *out = '\0'; |
48 | return; |
49 | } |
50 | |
c85623f9 |
51 | static void unmungestr(const char *in, char *out, int outlen) |
32874aea |
52 | { |
d5859615 |
53 | while (*in) { |
54 | if (*in == '%' && in[1] && in[2]) { |
55 | int i, j; |
56 | |
32874aea |
57 | i = in[1] - '0'; |
58 | i -= (i > 9 ? 7 : 0); |
59 | j = in[2] - '0'; |
60 | j -= (j > 9 ? 7 : 0); |
d5859615 |
61 | |
32874aea |
62 | *out++ = (i << 4) + j; |
63 | if (!--outlen) |
64 | return; |
d5859615 |
65 | in += 3; |
d1622aed |
66 | } else { |
d5859615 |
67 | *out++ = *in++; |
32874aea |
68 | if (!--outlen) |
69 | return; |
70 | } |
d5859615 |
71 | } |
72 | *out = '\0'; |
73 | return; |
74 | } |
75 | |
3f935d5b |
76 | void *open_settings_w(const char *sessionname, char **errmsg) |
32874aea |
77 | { |
d1622aed |
78 | HKEY subkey1, sesskey; |
79 | int ret; |
80 | char *p; |
81 | |
3f935d5b |
82 | *errmsg = NULL; |
83 | |
90bf4cce |
84 | if (!sessionname || !*sessionname) |
85 | sessionname = "Default Settings"; |
86 | |
3d88e64d |
87 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
88 | mungestr(sessionname, p); |
32874aea |
89 | |
d1622aed |
90 | ret = RegCreateKey(HKEY_CURRENT_USER, puttystr, &subkey1); |
91 | if (ret != ERROR_SUCCESS) { |
32874aea |
92 | sfree(p); |
3f935d5b |
93 | *errmsg = dupprintf("Unable to create registry key\n" |
c19a50ed |
94 | "HKEY_CURRENT_USER\\%s", puttystr); |
32874aea |
95 | return NULL; |
d1622aed |
96 | } |
97 | ret = RegCreateKey(subkey1, p, &sesskey); |
d1622aed |
98 | RegCloseKey(subkey1); |
3f935d5b |
99 | if (ret != ERROR_SUCCESS) { |
100 | *errmsg = dupprintf("Unable to create registry key\n" |
c19a50ed |
101 | "HKEY_CURRENT_USER\\%s\\%s", puttystr, p); |
2d3f15fa |
102 | sfree(p); |
32874aea |
103 | return NULL; |
3f935d5b |
104 | } |
2d3f15fa |
105 | sfree(p); |
32874aea |
106 | return (void *) sesskey; |
d1622aed |
107 | } |
108 | |
c85623f9 |
109 | void write_setting_s(void *handle, const char *key, const char *value) |
32874aea |
110 | { |
d1622aed |
111 | if (handle) |
32874aea |
112 | RegSetValueEx((HKEY) handle, key, 0, REG_SZ, value, |
113 | 1 + strlen(value)); |
d1622aed |
114 | } |
115 | |
c85623f9 |
116 | void write_setting_i(void *handle, const char *key, int value) |
32874aea |
117 | { |
d1622aed |
118 | if (handle) |
32874aea |
119 | RegSetValueEx((HKEY) handle, key, 0, REG_DWORD, |
e66c3912 |
120 | (CONST BYTE *) &value, sizeof(value)); |
d1622aed |
121 | } |
122 | |
32874aea |
123 | void close_settings_w(void *handle) |
124 | { |
125 | RegCloseKey((HKEY) handle); |
d1622aed |
126 | } |
127 | |
c85623f9 |
128 | void *open_settings_r(const char *sessionname) |
32874aea |
129 | { |
d1622aed |
130 | HKEY subkey1, sesskey; |
131 | char *p; |
132 | |
90bf4cce |
133 | if (!sessionname || !*sessionname) |
134 | sessionname = "Default Settings"; |
135 | |
3d88e64d |
136 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
137 | mungestr(sessionname, p); |
138 | |
139 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) { |
140 | sesskey = NULL; |
141 | } else { |
142 | if (RegOpenKey(subkey1, p, &sesskey) != ERROR_SUCCESS) { |
143 | sesskey = NULL; |
144 | } |
145 | RegCloseKey(subkey1); |
146 | } |
147 | |
dcbde236 |
148 | sfree(p); |
d1622aed |
149 | |
32874aea |
150 | return (void *) sesskey; |
d1622aed |
151 | } |
152 | |
4a693cfc |
153 | char *read_setting_s(void *handle, const char *key) |
32874aea |
154 | { |
d1622aed |
155 | DWORD type, size; |
4a693cfc |
156 | char *ret; |
d1622aed |
157 | |
4a693cfc |
158 | if (!handle) |
159 | return NULL; |
160 | |
161 | /* Find out the type and size of the data. */ |
162 | if (RegQueryValueEx((HKEY) handle, key, 0, |
163 | &type, NULL, &size) != ERROR_SUCCESS || |
164 | type != REG_SZ) |
165 | return NULL; |
166 | |
167 | ret = snewn(size+1, char); |
168 | if (RegQueryValueEx((HKEY) handle, key, 0, |
169 | &type, ret, &size) != ERROR_SUCCESS || |
32874aea |
170 | type != REG_SZ) return NULL; |
4a693cfc |
171 | |
172 | return ret; |
d1622aed |
173 | } |
d5859615 |
174 | |
c85623f9 |
175 | int read_setting_i(void *handle, const char *key, int defvalue) |
32874aea |
176 | { |
d1622aed |
177 | DWORD type, val, size; |
178 | size = sizeof(val); |
179 | |
180 | if (!handle || |
32874aea |
181 | RegQueryValueEx((HKEY) handle, key, 0, &type, |
e66c3912 |
182 | (BYTE *) &val, &size) != ERROR_SUCCESS || |
d1622aed |
183 | size != sizeof(val) || type != REG_DWORD) |
184 | return defvalue; |
185 | else |
186 | return val; |
187 | } |
188 | |
ae62eaeb |
189 | FontSpec *read_setting_fontspec(void *handle, const char *name) |
9a30e26b |
190 | { |
191 | char *settingname; |
4a693cfc |
192 | char *fontname; |
ae62eaeb |
193 | int isbold, height, charset; |
9a30e26b |
194 | |
4a693cfc |
195 | fontname = read_setting_s(handle, name); |
196 | if (!fontname) |
ae62eaeb |
197 | return NULL; |
4a693cfc |
198 | |
9a30e26b |
199 | settingname = dupcat(name, "IsBold", NULL); |
ae62eaeb |
200 | isbold = read_setting_i(handle, settingname, -1); |
9a30e26b |
201 | sfree(settingname); |
ae62eaeb |
202 | if (isbold == -1) return NULL; |
4a693cfc |
203 | |
9a30e26b |
204 | settingname = dupcat(name, "CharSet", NULL); |
ae62eaeb |
205 | charset = read_setting_i(handle, settingname, -1); |
9a30e26b |
206 | sfree(settingname); |
ae62eaeb |
207 | if (charset == -1) return NULL; |
4a693cfc |
208 | |
9a30e26b |
209 | settingname = dupcat(name, "Height", NULL); |
ae62eaeb |
210 | height = read_setting_i(handle, settingname, INT_MIN); |
9a30e26b |
211 | sfree(settingname); |
ae62eaeb |
212 | if (height == INT_MIN) return NULL; |
213 | |
214 | return fontspec_new(fontname, isbold, height, charset); |
9a30e26b |
215 | } |
216 | |
ae62eaeb |
217 | void write_setting_fontspec(void *handle, const char *name, FontSpec *font) |
9a30e26b |
218 | { |
219 | char *settingname; |
220 | |
ae62eaeb |
221 | write_setting_s(handle, name, font->name); |
9a30e26b |
222 | settingname = dupcat(name, "IsBold", NULL); |
ae62eaeb |
223 | write_setting_i(handle, settingname, font->isbold); |
9a30e26b |
224 | sfree(settingname); |
225 | settingname = dupcat(name, "CharSet", NULL); |
ae62eaeb |
226 | write_setting_i(handle, settingname, font->charset); |
9a30e26b |
227 | sfree(settingname); |
228 | settingname = dupcat(name, "Height", NULL); |
ae62eaeb |
229 | write_setting_i(handle, settingname, font->height); |
9a30e26b |
230 | sfree(settingname); |
231 | } |
232 | |
233 | int read_setting_filename(void *handle, const char *name, Filename *result) |
234 | { |
4a693cfc |
235 | char *tmp = read_setting_s(handle, name); |
236 | if (tmp) { |
237 | strncpy(result->path, tmp, sizeof(result->path)-1); |
238 | result->path[sizeof(result->path)-1] = '\0'; |
239 | sfree(tmp); |
240 | return TRUE; |
241 | } else |
242 | return FALSE; |
9a30e26b |
243 | } |
244 | |
245 | void write_setting_filename(void *handle, const char *name, Filename result) |
246 | { |
247 | write_setting_s(handle, name, result.path); |
248 | } |
249 | |
32874aea |
250 | void close_settings_r(void *handle) |
251 | { |
252 | RegCloseKey((HKEY) handle); |
d1622aed |
253 | } |
254 | |
c85623f9 |
255 | void del_settings(const char *sessionname) |
32874aea |
256 | { |
d1622aed |
257 | HKEY subkey1; |
258 | char *p; |
259 | |
260 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &subkey1) != ERROR_SUCCESS) |
261 | return; |
262 | |
3d88e64d |
263 | p = snewn(3 * strlen(sessionname) + 1, char); |
d1622aed |
264 | mungestr(sessionname, p); |
265 | RegDeleteKey(subkey1, p); |
dcbde236 |
266 | sfree(p); |
d1622aed |
267 | |
268 | RegCloseKey(subkey1); |
073e9f42 |
269 | |
270 | remove_session_from_jumplist(sessionname); |
d1622aed |
271 | } |
d5859615 |
272 | |
d1622aed |
273 | struct enumsettings { |
274 | HKEY key; |
275 | int i; |
276 | }; |
277 | |
32874aea |
278 | void *enum_settings_start(void) |
279 | { |
d1622aed |
280 | struct enumsettings *ret; |
281 | HKEY key; |
282 | |
5f2df4d2 |
283 | if (RegOpenKey(HKEY_CURRENT_USER, puttystr, &key) != ERROR_SUCCESS) |
32874aea |
284 | return NULL; |
d1622aed |
285 | |
3d88e64d |
286 | ret = snew(struct enumsettings); |
d1622aed |
287 | if (ret) { |
32874aea |
288 | ret->key = key; |
289 | ret->i = 0; |
d1622aed |
290 | } |
291 | |
292 | return ret; |
293 | } |
294 | |
32874aea |
295 | char *enum_settings_next(void *handle, char *buffer, int buflen) |
296 | { |
297 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
298 | char *otherbuf; |
3d88e64d |
299 | otherbuf = snewn(3 * buflen, char); |
60371ab3 |
300 | if (RegEnumKey(e->key, e->i++, otherbuf, 3 * buflen) == ERROR_SUCCESS) { |
32874aea |
301 | unmungestr(otherbuf, buffer, buflen); |
302 | sfree(otherbuf); |
303 | return buffer; |
60371ab3 |
304 | } else { |
305 | sfree(otherbuf); |
32874aea |
306 | return NULL; |
60371ab3 |
307 | } |
d1622aed |
308 | } |
309 | |
32874aea |
310 | void enum_settings_finish(void *handle) |
311 | { |
312 | struct enumsettings *e = (struct enumsettings *) handle; |
d1622aed |
313 | RegCloseKey(e->key); |
dcbde236 |
314 | sfree(e); |
d1622aed |
315 | } |
316 | |
c85623f9 |
317 | static void hostkey_regname(char *buffer, const char *hostname, |
318 | int port, const char *keytype) |
32874aea |
319 | { |
d4857987 |
320 | int len; |
321 | strcpy(buffer, keytype); |
322 | strcat(buffer, "@"); |
323 | len = strlen(buffer); |
32874aea |
324 | len += sprintf(buffer + len, "%d:", port); |
d4857987 |
325 | mungestr(hostname, buffer + strlen(buffer)); |
326 | } |
327 | |
c85623f9 |
328 | int verify_host_key(const char *hostname, int port, |
329 | const char *keytype, const char *key) |
32874aea |
330 | { |
d5859615 |
331 | char *otherstr, *regname; |
332 | int len; |
333 | HKEY rkey; |
334 | DWORD readlen; |
335 | DWORD type; |
336 | int ret, compare; |
337 | |
338 | len = 1 + strlen(key); |
339 | |
340 | /* |
341 | * Now read a saved key in from the registry and see what it |
342 | * says. |
343 | */ |
3d88e64d |
344 | otherstr = snewn(len, char); |
345 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
346 | |
d4857987 |
347 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
348 | |
5f2df4d2 |
349 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
350 | &rkey) != ERROR_SUCCESS) |
32874aea |
351 | return 1; /* key does not exist in registry */ |
d5859615 |
352 | |
353 | readlen = len; |
354 | ret = RegQueryValueEx(rkey, regname, NULL, &type, otherstr, &readlen); |
355 | |
356 | if (ret != ERROR_SUCCESS && ret != ERROR_MORE_DATA && |
32874aea |
357 | !strcmp(keytype, "rsa")) { |
358 | /* |
359 | * Key didn't exist. If the key type is RSA, we'll try |
360 | * another trick, which is to look up the _old_ key format |
361 | * under just the hostname and translate that. |
362 | */ |
363 | char *justhost = regname + 1 + strcspn(regname, ":"); |
3d88e64d |
364 | char *oldstyle = snewn(len + 10, char); /* safety margin */ |
32874aea |
365 | readlen = len; |
366 | ret = RegQueryValueEx(rkey, justhost, NULL, &type, |
367 | oldstyle, &readlen); |
368 | |
369 | if (ret == ERROR_SUCCESS && type == REG_SZ) { |
370 | /* |
371 | * The old format is two old-style bignums separated by |
372 | * a slash. An old-style bignum is made of groups of |
373 | * four hex digits: digits are ordered in sensible |
374 | * (most to least significant) order within each group, |
375 | * but groups are ordered in silly (least to most) |
376 | * order within the bignum. The new format is two |
377 | * ordinary C-format hex numbers (0xABCDEFG...XYZ, with |
378 | * A nonzero except in the special case 0x0, which |
379 | * doesn't appear anyway in RSA keys) separated by a |
380 | * comma. All hex digits are lowercase in both formats. |
381 | */ |
382 | char *p = otherstr; |
383 | char *q = oldstyle; |
384 | int i, j; |
385 | |
386 | for (i = 0; i < 2; i++) { |
387 | int ndigits, nwords; |
388 | *p++ = '0'; |
389 | *p++ = 'x'; |
390 | ndigits = strcspn(q, "/"); /* find / or end of string */ |
391 | nwords = ndigits / 4; |
392 | /* now trim ndigits to remove leading zeros */ |
393 | while (q[(ndigits - 1) ^ 3] == '0' && ndigits > 1) |
394 | ndigits--; |
395 | /* now move digits over to new string */ |
396 | for (j = 0; j < ndigits; j++) |
397 | p[ndigits - 1 - j] = q[j ^ 3]; |
398 | p += ndigits; |
399 | q += nwords * 4; |
400 | if (*q) { |
401 | q++; /* eat the slash */ |
402 | *p++ = ','; /* add a comma */ |
403 | } |
404 | *p = '\0'; /* terminate the string */ |
405 | } |
406 | |
407 | /* |
408 | * Now _if_ this key matches, we'll enter it in the new |
409 | * format. If not, we'll assume something odd went |
410 | * wrong, and hyper-cautiously do nothing. |
411 | */ |
412 | if (!strcmp(otherstr, key)) |
413 | RegSetValueEx(rkey, regname, 0, REG_SZ, otherstr, |
414 | strlen(otherstr) + 1); |
415 | } |
d5859615 |
416 | } |
417 | |
418 | RegCloseKey(rkey); |
419 | |
420 | compare = strcmp(otherstr, key); |
421 | |
422 | sfree(otherstr); |
423 | sfree(regname); |
424 | |
425 | if (ret == ERROR_MORE_DATA || |
32874aea |
426 | (ret == ERROR_SUCCESS && type == REG_SZ && compare)) |
427 | return 2; /* key is different in registry */ |
d5859615 |
428 | else if (ret != ERROR_SUCCESS || type != REG_SZ) |
32874aea |
429 | return 1; /* key does not exist in registry */ |
d5859615 |
430 | else |
32874aea |
431 | return 0; /* key matched OK in registry */ |
d5859615 |
432 | } |
433 | |
c85623f9 |
434 | void store_host_key(const char *hostname, int port, |
435 | const char *keytype, const char *key) |
32874aea |
436 | { |
d5859615 |
437 | char *regname; |
438 | HKEY rkey; |
439 | |
3d88e64d |
440 | regname = snewn(3 * (strlen(hostname) + strlen(keytype)) + 15, char); |
d5859615 |
441 | |
d4857987 |
442 | hostkey_regname(regname, hostname, port, keytype); |
d5859615 |
443 | |
444 | if (RegCreateKey(HKEY_CURRENT_USER, PUTTY_REG_POS "\\SshHostKeys", |
fc2464c6 |
445 | &rkey) == ERROR_SUCCESS) { |
446 | RegSetValueEx(rkey, regname, 0, REG_SZ, key, strlen(key) + 1); |
447 | RegCloseKey(rkey); |
448 | } /* else key does not exist in registry */ |
449 | |
450 | sfree(regname); |
d5859615 |
451 | } |
452 | |
453 | /* |
7bccf0fe |
454 | * Open (or delete) the random seed file. |
d5859615 |
455 | */ |
7bccf0fe |
456 | enum { DEL, OPEN_R, OPEN_W }; |
457 | static int try_random_seed(char const *path, int action, HANDLE *ret) |
458 | { |
459 | if (action == DEL) { |
460 | remove(path); |
461 | *ret = INVALID_HANDLE_VALUE; |
462 | return FALSE; /* so we'll do the next ones too */ |
463 | } |
464 | |
465 | *ret = CreateFile(path, |
466 | action == OPEN_W ? GENERIC_WRITE : GENERIC_READ, |
467 | action == OPEN_W ? 0 : (FILE_SHARE_READ | |
468 | FILE_SHARE_WRITE), |
469 | NULL, |
470 | action == OPEN_W ? CREATE_ALWAYS : OPEN_EXISTING, |
471 | action == OPEN_W ? FILE_ATTRIBUTE_NORMAL : 0, |
472 | NULL); |
473 | |
474 | return (*ret != INVALID_HANDLE_VALUE); |
475 | } |
476 | |
477 | static HANDLE access_random_seed(int action) |
32874aea |
478 | { |
d5859615 |
479 | HKEY rkey; |
480 | DWORD type, size; |
7bccf0fe |
481 | HANDLE rethandle; |
482 | char seedpath[2 * MAX_PATH + 10] = "\0"; |
d5859615 |
483 | |
7bccf0fe |
484 | /* |
485 | * Iterate over a selection of possible random seed paths until |
486 | * we find one that works. |
487 | * |
488 | * We do this iteration separately for reading and writing, |
489 | * meaning that we will automatically migrate random seed files |
490 | * if a better location becomes available (by reading from the |
491 | * best location in which we actually find one, and then |
492 | * writing to the best location in which we can _create_ one). |
493 | */ |
d5859615 |
494 | |
7bccf0fe |
495 | /* |
496 | * First, try the location specified by the user in the |
497 | * Registry, if any. |
498 | */ |
499 | size = sizeof(seedpath); |
32874aea |
500 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &rkey) == |
501 | ERROR_SUCCESS) { |
d5859615 |
502 | int ret = RegQueryValueEx(rkey, "RandSeedFile", |
503 | 0, &type, seedpath, &size); |
504 | if (ret != ERROR_SUCCESS || type != REG_SZ) |
505 | seedpath[0] = '\0'; |
506 | RegCloseKey(rkey); |
d5859615 |
507 | |
7bccf0fe |
508 | if (*seedpath && try_random_seed(seedpath, action, &rethandle)) |
509 | return rethandle; |
510 | } |
511 | |
512 | /* |
513 | * Next, try the user's local Application Data directory, |
514 | * followed by their non-local one. This is found using the |
515 | * SHGetFolderPath function, which won't be present on all |
516 | * versions of Windows. |
517 | */ |
518 | if (!tried_shgetfolderpath) { |
8f5f26d2 |
519 | /* This is likely only to bear fruit on systems with IE5+ |
520 | * installed, or WinMe/2K+. There is some faffing with |
521 | * SHFOLDER.DLL we could do to try to find an equivalent |
522 | * on older versions of Windows if we cared enough. |
523 | * However, the invocation below requires IE5+ anyway, |
524 | * so stuff that. */ |
bda368a5 |
525 | shell32_module = load_system32_dll("shell32.dll"); |
9099600a |
526 | GET_WINDOWS_FUNCTION(shell32_module, SHGetFolderPathA); |
a6c15e85 |
527 | tried_shgetfolderpath = TRUE; |
7bccf0fe |
528 | } |
9099600a |
529 | if (p_SHGetFolderPathA) { |
530 | if (SUCCEEDED(p_SHGetFolderPathA(NULL, CSIDL_LOCAL_APPDATA, |
531 | NULL, SHGFP_TYPE_CURRENT, seedpath))) { |
7bccf0fe |
532 | strcat(seedpath, "\\PUTTY.RND"); |
533 | if (try_random_seed(seedpath, action, &rethandle)) |
534 | return rethandle; |
535 | } |
536 | |
9099600a |
537 | if (SUCCEEDED(p_SHGetFolderPathA(NULL, CSIDL_APPDATA, |
538 | NULL, SHGFP_TYPE_CURRENT, seedpath))) { |
7bccf0fe |
539 | strcat(seedpath, "\\PUTTY.RND"); |
540 | if (try_random_seed(seedpath, action, &rethandle)) |
541 | return rethandle; |
542 | } |
543 | } |
544 | |
545 | /* |
546 | * Failing that, try %HOMEDRIVE%%HOMEPATH% as a guess at the |
547 | * user's home directory. |
548 | */ |
549 | { |
d5859615 |
550 | int len, ret; |
551 | |
32874aea |
552 | len = |
553 | GetEnvironmentVariable("HOMEDRIVE", seedpath, |
554 | sizeof(seedpath)); |
555 | ret = |
556 | GetEnvironmentVariable("HOMEPATH", seedpath + len, |
557 | sizeof(seedpath) - len); |
7bccf0fe |
558 | if (ret != 0) { |
559 | strcat(seedpath, "\\PUTTY.RND"); |
560 | if (try_random_seed(seedpath, action, &rethandle)) |
561 | return rethandle; |
562 | } |
d5859615 |
563 | } |
7bccf0fe |
564 | |
565 | /* |
566 | * And finally, fall back to C:\WINDOWS. |
567 | */ |
568 | GetWindowsDirectory(seedpath, sizeof(seedpath)); |
569 | strcat(seedpath, "\\PUTTY.RND"); |
570 | if (try_random_seed(seedpath, action, &rethandle)) |
571 | return rethandle; |
572 | |
573 | /* |
574 | * If even that failed, give up. |
575 | */ |
576 | return INVALID_HANDLE_VALUE; |
d5859615 |
577 | } |
578 | |
32874aea |
579 | void read_random_seed(noise_consumer_t consumer) |
580 | { |
7bccf0fe |
581 | HANDLE seedf = access_random_seed(OPEN_R); |
d5859615 |
582 | |
583 | if (seedf != INVALID_HANDLE_VALUE) { |
584 | while (1) { |
585 | char buf[1024]; |
586 | DWORD len; |
587 | |
588 | if (ReadFile(seedf, buf, sizeof(buf), &len, NULL) && len) |
32874aea |
589 | consumer(buf, len); |
d5859615 |
590 | else |
591 | break; |
592 | } |
593 | CloseHandle(seedf); |
594 | } |
595 | } |
596 | |
32874aea |
597 | void write_random_seed(void *data, int len) |
598 | { |
7bccf0fe |
599 | HANDLE seedf = access_random_seed(OPEN_W); |
d5859615 |
600 | |
601 | if (seedf != INVALID_HANDLE_VALUE) { |
602 | DWORD lenwritten; |
603 | |
604 | WriteFile(seedf, data, len, &lenwritten, NULL); |
605 | CloseHandle(seedf); |
606 | } |
607 | } |
608 | |
609 | /* |
073e9f42 |
610 | * Internal function supporting the jump list registry code. All the |
611 | * functions to add, remove and read the list have substantially |
612 | * similar content, so this is a generalisation of all of them which |
613 | * transforms the list in the registry by prepending 'add' (if |
614 | * non-null), removing 'rem' from what's left (if non-null), and |
615 | * returning the resulting concatenated list of strings in 'out' (if |
616 | * non-null). |
617 | */ |
618 | static int transform_jumplist_registry |
619 | (const char *add, const char *rem, char **out) |
620 | { |
621 | int ret; |
622 | HKEY pjumplist_key, psettings_tmp; |
623 | DWORD type; |
624 | int value_length; |
625 | char *old_value, *new_value; |
626 | char *piterator_old, *piterator_new, *piterator_tmp; |
627 | |
628 | ret = RegCreateKeyEx(HKEY_CURRENT_USER, reg_jumplist_key, 0, NULL, |
629 | REG_OPTION_NON_VOLATILE, (KEY_READ | KEY_WRITE), NULL, |
630 | &pjumplist_key, NULL); |
631 | if (ret != ERROR_SUCCESS) { |
632 | return JUMPLISTREG_ERROR_KEYOPENCREATE_FAILURE; |
633 | } |
634 | |
635 | /* Get current list of saved sessions in the registry. */ |
636 | value_length = 200; |
637 | old_value = snewn(value_length, char); |
638 | ret = RegQueryValueEx(pjumplist_key, reg_jumplist_value, NULL, &type, |
639 | old_value, &value_length); |
640 | /* When the passed buffer is too small, ERROR_MORE_DATA is |
641 | * returned and the required size is returned in the length |
642 | * argument. */ |
643 | if (ret == ERROR_MORE_DATA) { |
644 | sfree(old_value); |
645 | old_value = snewn(value_length, char); |
646 | ret = RegQueryValueEx(pjumplist_key, reg_jumplist_value, NULL, &type, |
647 | old_value, &value_length); |
648 | } |
649 | |
650 | if (ret == ERROR_FILE_NOT_FOUND) { |
651 | /* Value doesn't exist yet. Start from an empty value. */ |
652 | *old_value = '\0'; |
653 | *(old_value + 1) = '\0'; |
654 | } else if (ret != ERROR_SUCCESS) { |
655 | /* Some non-recoverable error occurred. */ |
656 | sfree(old_value); |
657 | RegCloseKey(pjumplist_key); |
658 | return JUMPLISTREG_ERROR_VALUEREAD_FAILURE; |
659 | } else if (type != REG_MULTI_SZ) { |
660 | /* The value present in the registry has the wrong type: we |
661 | * try to delete it and start from an empty value. */ |
662 | ret = RegDeleteValue(pjumplist_key, reg_jumplist_value); |
663 | if (ret != ERROR_SUCCESS) { |
664 | sfree(old_value); |
665 | RegCloseKey(pjumplist_key); |
666 | return JUMPLISTREG_ERROR_VALUEREAD_FAILURE; |
667 | } |
668 | |
669 | *old_value = '\0'; |
670 | *(old_value + 1) = '\0'; |
671 | } |
672 | |
673 | /* Check validity of registry data: REG_MULTI_SZ value must end |
674 | * with \0\0. */ |
675 | piterator_tmp = old_value; |
676 | while (((piterator_tmp - old_value) < (value_length - 1)) && |
677 | !(*piterator_tmp == '\0' && *(piterator_tmp+1) == '\0')) { |
678 | ++piterator_tmp; |
679 | } |
680 | |
681 | if ((piterator_tmp - old_value) >= (value_length-1)) { |
682 | /* Invalid value. Start from an empty value. */ |
683 | *old_value = '\0'; |
684 | *(old_value + 1) = '\0'; |
685 | } |
686 | |
687 | /* |
688 | * Modify the list, if we're modifying. |
689 | */ |
690 | if (add || rem) { |
691 | /* Walk through the existing list and construct the new list of |
692 | * saved sessions. */ |
693 | new_value = snewn(value_length + (add ? strlen(add) + 1 : 0), char); |
694 | piterator_new = new_value; |
695 | piterator_old = old_value; |
696 | |
697 | /* First add the new item to the beginning of the list. */ |
698 | if (add) { |
699 | strcpy(piterator_new, add); |
700 | piterator_new += strlen(piterator_new) + 1; |
701 | } |
702 | /* Now add the existing list, taking care to leave out the removed |
703 | * item, if it was already in the existing list. */ |
704 | while (*piterator_old != '\0') { |
705 | if (!rem || strcmp(piterator_old, rem) != 0) { |
706 | /* Check if this is a valid session, otherwise don't add. */ |
707 | psettings_tmp = open_settings_r(piterator_old); |
708 | if (psettings_tmp != NULL) { |
709 | close_settings_r(psettings_tmp); |
710 | strcpy(piterator_new, piterator_old); |
711 | piterator_new += strlen(piterator_new) + 1; |
712 | } |
713 | } |
714 | piterator_old += strlen(piterator_old) + 1; |
715 | } |
716 | *piterator_new = '\0'; |
717 | ++piterator_new; |
718 | |
719 | /* Save the new list to the registry. */ |
720 | ret = RegSetValueEx(pjumplist_key, reg_jumplist_value, 0, REG_MULTI_SZ, |
721 | new_value, piterator_new - new_value); |
722 | |
5165dd4f |
723 | sfree(old_value); |
073e9f42 |
724 | old_value = new_value; |
073e9f42 |
725 | } else |
726 | ret = ERROR_SUCCESS; |
727 | |
728 | /* |
729 | * Either return or free the result. |
730 | */ |
731 | if (out) |
732 | *out = old_value; |
733 | else |
734 | sfree(old_value); |
735 | |
736 | /* Clean up and return. */ |
737 | RegCloseKey(pjumplist_key); |
738 | |
739 | if (ret != ERROR_SUCCESS) { |
740 | return JUMPLISTREG_ERROR_VALUEWRITE_FAILURE; |
741 | } else { |
742 | return JUMPLISTREG_OK; |
743 | } |
744 | } |
745 | |
746 | /* Adds a new entry to the jumplist entries in the registry. */ |
747 | int add_to_jumplist_registry(const char *item) |
748 | { |
749 | return transform_jumplist_registry(item, item, NULL); |
750 | } |
751 | |
752 | /* Removes an item from the jumplist entries in the registry. */ |
753 | int remove_from_jumplist_registry(const char *item) |
754 | { |
755 | return transform_jumplist_registry(NULL, item, NULL); |
756 | } |
757 | |
758 | /* Returns the jumplist entries from the registry. Caller must free |
759 | * the returned pointer. */ |
760 | char *get_jumplist_registry_entries (void) |
761 | { |
762 | char *list_value; |
763 | |
764 | if (transform_jumplist_registry(NULL,NULL,&list_value) != ERROR_SUCCESS) { |
765 | list_value = snewn(2, char); |
766 | *list_value = '\0'; |
767 | *(list_value + 1) = '\0'; |
768 | } |
769 | return list_value; |
770 | } |
771 | |
772 | /* |
d5859615 |
773 | * Recursively delete a registry key and everything under it. |
774 | */ |
32874aea |
775 | static void registry_recursive_remove(HKEY key) |
776 | { |
d5859615 |
777 | DWORD i; |
32874aea |
778 | char name[MAX_PATH + 1]; |
d5859615 |
779 | HKEY subkey; |
780 | |
781 | i = 0; |
782 | while (RegEnumKey(key, i, name, sizeof(name)) == ERROR_SUCCESS) { |
32874aea |
783 | if (RegOpenKey(key, name, &subkey) == ERROR_SUCCESS) { |
784 | registry_recursive_remove(subkey); |
785 | RegCloseKey(subkey); |
786 | } |
787 | RegDeleteKey(key, name); |
d5859615 |
788 | } |
789 | } |
790 | |
32874aea |
791 | void cleanup_all(void) |
792 | { |
d5859615 |
793 | HKEY key; |
794 | int ret; |
32874aea |
795 | char name[MAX_PATH + 1]; |
d5859615 |
796 | |
797 | /* ------------------------------------------------------------ |
7bccf0fe |
798 | * Wipe out the random seed file, in all of its possible |
799 | * locations. |
d5859615 |
800 | */ |
7bccf0fe |
801 | access_random_seed(DEL); |
d5859615 |
802 | |
803 | /* ------------------------------------------------------------ |
21cdf8c2 |
804 | * Ask Windows to delete any jump list information associated |
805 | * with this installation of PuTTY. |
806 | */ |
807 | clear_jumplist(); |
808 | |
809 | /* ------------------------------------------------------------ |
d5859615 |
810 | * Destroy all registry information associated with PuTTY. |
811 | */ |
812 | |
813 | /* |
814 | * Open the main PuTTY registry key and remove everything in it. |
815 | */ |
32874aea |
816 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_POS, &key) == |
817 | ERROR_SUCCESS) { |
818 | registry_recursive_remove(key); |
819 | RegCloseKey(key); |
d5859615 |
820 | } |
821 | /* |
822 | * Now open the parent key and remove the PuTTY main key. Once |
823 | * we've done that, see if the parent key has any other |
824 | * children. |
825 | */ |
826 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_PARENT, |
32874aea |
827 | &key) == ERROR_SUCCESS) { |
828 | RegDeleteKey(key, PUTTY_REG_PARENT_CHILD); |
829 | ret = RegEnumKey(key, 0, name, sizeof(name)); |
830 | RegCloseKey(key); |
831 | /* |
832 | * If the parent key had no other children, we must delete |
833 | * it in its turn. That means opening the _grandparent_ |
834 | * key. |
835 | */ |
836 | if (ret != ERROR_SUCCESS) { |
837 | if (RegOpenKey(HKEY_CURRENT_USER, PUTTY_REG_GPARENT, |
838 | &key) == ERROR_SUCCESS) { |
839 | RegDeleteKey(key, PUTTY_REG_GPARENT_CHILD); |
840 | RegCloseKey(key); |
841 | } |
842 | } |
d5859615 |
843 | } |
844 | /* |
845 | * Now we're done. |
846 | */ |
847 | } |