5c58ad2d |
1 | /* |
2 | * Pageant: the PuTTY Authentication Agent. |
3 | */ |
4 | |
5 | #include <windows.h> |
123bc6ea |
6 | #ifndef NO_SECURITY |
d70f60ae |
7 | #include <aclapi.h> |
123bc6ea |
8 | #endif |
9b581c37 |
9 | #include <stdio.h> |
49bad831 |
10 | #include <stdlib.h> |
11 | #include <ctype.h> |
ddecd643 |
12 | #include <tchar.h> |
13 | |
5c58ad2d |
14 | #include "ssh.h" |
15 | #include "tree234.h" |
16 | |
17 | #define IDI_MAINICON 200 |
18 | #define IDI_TRAYICON 201 |
19 | |
20 | #define WM_XUSER (WM_USER + 0x2000) |
21 | #define WM_SYSTRAY (WM_XUSER + 6) |
22 | #define WM_SYSTRAY2 (WM_XUSER + 7) |
d70f60ae |
23 | |
24 | #define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ |
25 | |
26 | /* |
27 | * FIXME: maybe some day we can sort this out ... |
28 | */ |
29 | #define AGENT_MAX_MSGLEN 8192 |
5c58ad2d |
30 | |
31 | #define IDM_CLOSE 0x0010 |
32 | #define IDM_VIEWKEYS 0x0020 |
ab162329 |
33 | #define IDM_ADDKEY 0x0030 |
34 | #define IDM_ABOUT 0x0040 |
5c58ad2d |
35 | |
36 | #define APPNAME "Pageant" |
37 | |
5af3a3b6 |
38 | extern char ver[]; |
39 | |
75cab814 |
40 | static HINSTANCE instance; |
41 | static HWND hwnd; |
42 | static HWND keylist; |
43 | static HWND aboutbox; |
44 | static HMENU systray_menu; |
ddecd643 |
45 | static int already_running; |
5c58ad2d |
46 | |
45cebe79 |
47 | static tree234 *rsakeys, *ssh2keys; |
5c58ad2d |
48 | |
75cab814 |
49 | static int has_security; |
123bc6ea |
50 | #ifndef NO_SECURITY |
016ef8ab |
51 | typedef DWORD (WINAPI *gsi_fn_t) |
52 | (HANDLE, SE_OBJECT_TYPE, SECURITY_INFORMATION, |
53 | PSID *, PSID *, PACL *, PACL *, |
54 | PSECURITY_DESCRIPTOR *); |
75cab814 |
55 | static gsi_fn_t getsecurityinfo; |
123bc6ea |
56 | #endif |
016ef8ab |
57 | |
5c58ad2d |
58 | /* |
260f3dec |
59 | * Exports from pageantc.c |
60 | */ |
61 | void agent_query(void *in, int inlen, void **out, int *outlen); |
62 | int agent_exists(void); |
63 | |
64 | /* |
5c58ad2d |
65 | * We need this to link with the RSA code, because rsaencrypt() |
45cebe79 |
66 | * pads its data with random bytes. Since we only use rsadecrypt() |
67 | * and the signing functions, which are deterministic, this should |
68 | * never be called. |
69 | * |
5c58ad2d |
70 | * If it _is_ called, there is a _serious_ problem, because it |
71 | * won't generate true random numbers. So we must scream, panic, |
72 | * and exit immediately if that should happen. |
73 | */ |
74 | int random_byte(void) { |
75 | MessageBox(hwnd, "Internal Error", APPNAME, MB_OK | MB_ICONERROR); |
76 | exit(0); |
77 | } |
78 | |
79 | /* |
45cebe79 |
80 | * Blob structure for passing to the asymmetric SSH2 key compare |
81 | * function, prototyped here. |
82 | */ |
83 | struct blob { |
84 | unsigned char *blob; |
85 | int len; |
86 | }; |
87 | static int cmpkeys_ssh2_asymm(void *av, void *bv); |
88 | |
89 | /* |
5c58ad2d |
90 | * This function is needed to link with the DES code. We need not |
91 | * have it do anything at all. |
92 | */ |
93 | void logevent(char *msg) { |
94 | } |
95 | |
96 | #define GET_32BIT(cp) \ |
97 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
98 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
99 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
100 | ((unsigned long)(unsigned char)(cp)[3])) |
101 | |
102 | #define PUT_32BIT(cp, value) { \ |
103 | (cp)[0] = (unsigned char)((value) >> 24); \ |
104 | (cp)[1] = (unsigned char)((value) >> 16); \ |
105 | (cp)[2] = (unsigned char)((value) >> 8); \ |
106 | (cp)[3] = (unsigned char)(value); } |
107 | |
108 | #define PASSPHRASE_MAXLEN 512 |
109 | |
d4de2d2a |
110 | struct PassphraseProcStruct { |
111 | char *passphrase; |
112 | char *comment; |
113 | }; |
114 | |
5c58ad2d |
115 | /* |
5af3a3b6 |
116 | * Dialog-box function for the Licence box. |
117 | */ |
118 | static int CALLBACK LicenceProc (HWND hwnd, UINT msg, |
119 | WPARAM wParam, LPARAM lParam) { |
120 | switch (msg) { |
121 | case WM_INITDIALOG: |
122 | return 1; |
123 | case WM_COMMAND: |
124 | switch (LOWORD(wParam)) { |
125 | case IDOK: |
126 | EndDialog(hwnd, 1); |
127 | return 0; |
128 | } |
129 | return 0; |
130 | case WM_CLOSE: |
131 | EndDialog(hwnd, 1); |
132 | return 0; |
133 | } |
134 | return 0; |
135 | } |
136 | |
137 | /* |
138 | * Dialog-box function for the About box. |
139 | */ |
140 | static int CALLBACK AboutProc (HWND hwnd, UINT msg, |
141 | WPARAM wParam, LPARAM lParam) { |
142 | switch (msg) { |
143 | case WM_INITDIALOG: |
144 | SetDlgItemText (hwnd, 100, ver); |
145 | return 1; |
146 | case WM_COMMAND: |
147 | switch (LOWORD(wParam)) { |
148 | case IDOK: |
149 | aboutbox = NULL; |
150 | DestroyWindow (hwnd); |
151 | return 0; |
152 | case 101: |
153 | EnableWindow(hwnd, 0); |
154 | DialogBox (instance, MAKEINTRESOURCE(214), NULL, LicenceProc); |
155 | EnableWindow(hwnd, 1); |
156 | SetActiveWindow(hwnd); |
157 | return 0; |
158 | } |
159 | return 0; |
160 | case WM_CLOSE: |
161 | aboutbox = NULL; |
162 | DestroyWindow (hwnd); |
163 | return 0; |
164 | } |
165 | return 0; |
166 | } |
167 | |
168 | /* |
5c58ad2d |
169 | * Dialog-box function for the passphrase box. |
170 | */ |
171 | static int CALLBACK PassphraseProc(HWND hwnd, UINT msg, |
172 | WPARAM wParam, LPARAM lParam) { |
173 | static char *passphrase; |
d4de2d2a |
174 | struct PassphraseProcStruct *p; |
5c58ad2d |
175 | |
176 | switch (msg) { |
177 | case WM_INITDIALOG: |
45cebe79 |
178 | /* |
179 | * Centre the window. |
180 | */ |
181 | { /* centre the window */ |
182 | RECT rs, rd; |
183 | HWND hw; |
184 | |
185 | hw = GetDesktopWindow(); |
186 | if (GetWindowRect (hw, &rs) && GetWindowRect (hwnd, &rd)) |
187 | MoveWindow (hwnd, (rs.right + rs.left + rd.left - rd.right)/2, |
188 | (rs.bottom + rs.top + rd.top - rd.bottom)/2, |
189 | rd.right-rd.left, rd.bottom-rd.top, TRUE); |
190 | } |
191 | |
ab162329 |
192 | SetForegroundWindow(hwnd); |
193 | SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0, |
194 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
d4de2d2a |
195 | p = (struct PassphraseProcStruct *)lParam; |
196 | passphrase = p->passphrase; |
197 | if (p->comment) |
198 | SetDlgItemText(hwnd, 101, p->comment); |
5c58ad2d |
199 | *passphrase = 0; |
200 | return 0; |
201 | case WM_COMMAND: |
202 | switch (LOWORD(wParam)) { |
203 | case IDOK: |
204 | if (*passphrase) |
205 | EndDialog (hwnd, 1); |
206 | else |
207 | MessageBeep (0); |
208 | return 0; |
209 | case IDCANCEL: |
210 | EndDialog (hwnd, 0); |
211 | return 0; |
212 | case 102: /* edit box */ |
213 | if (HIWORD(wParam) == EN_CHANGE) { |
214 | GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1); |
215 | passphrase[PASSPHRASE_MAXLEN-1] = '\0'; |
216 | } |
217 | return 0; |
218 | } |
219 | return 0; |
220 | case WM_CLOSE: |
221 | EndDialog (hwnd, 0); |
222 | return 0; |
223 | } |
224 | return 0; |
225 | } |
226 | |
227 | /* |
3c0b3d06 |
228 | * Update the visible key list. |
229 | */ |
75cab814 |
230 | static void keylist_update(void) { |
45cebe79 |
231 | struct RSAKey *rkey; |
232 | struct ssh2_userkey *skey; |
d2371c81 |
233 | int i; |
3c0b3d06 |
234 | |
235 | if (keylist) { |
236 | SendDlgItemMessage(keylist, 100, LB_RESETCONTENT, 0, 0); |
d2371c81 |
237 | for (i = 0; NULL != (rkey = index234(rsakeys, i)); i++) { |
45cebe79 |
238 | char listentry[512], *p; |
239 | /* |
240 | * Replace two spaces in the fingerprint with tabs, for |
241 | * nice alignment in the box. |
242 | */ |
243 | strcpy(listentry, "ssh1\t"); |
244 | p = listentry+strlen(listentry); |
245 | rsa_fingerprint(p, sizeof(listentry)-(p-listentry), rkey); |
246 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
247 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
248 | SendDlgItemMessage (keylist, 100, LB_ADDSTRING, |
249 | 0, (LPARAM)listentry); |
250 | } |
d2371c81 |
251 | for (i = 0; NULL != (skey = index234(ssh2keys, i)); i++) { |
1c2a93c4 |
252 | char listentry[512], *p; |
45cebe79 |
253 | int len; |
1c2a93c4 |
254 | /* |
255 | * Replace two spaces in the fingerprint with tabs, for |
256 | * nice alignment in the box. |
257 | */ |
45cebe79 |
258 | p = skey->alg->fingerprint(skey->data); |
259 | strncpy(listentry, p, sizeof(listentry)); |
1c2a93c4 |
260 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
261 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
45cebe79 |
262 | len = strlen(listentry); |
263 | if (len < sizeof(listentry)-2) { |
264 | listentry[len] = '\t'; |
265 | strncpy(listentry+len+1, skey->comment, sizeof(listentry)-len-1); |
266 | } |
3c0b3d06 |
267 | SendDlgItemMessage (keylist, 100, LB_ADDSTRING, |
1c2a93c4 |
268 | 0, (LPARAM)listentry); |
3c0b3d06 |
269 | } |
270 | SendDlgItemMessage (keylist, 100, LB_SETCURSEL, (WPARAM) -1, 0); |
271 | } |
272 | } |
273 | |
274 | /* |
5c58ad2d |
275 | * This function loads a key from a file and adds it. |
276 | */ |
75cab814 |
277 | static void add_keyfile(char *filename) { |
5c58ad2d |
278 | char passphrase[PASSPHRASE_MAXLEN]; |
45cebe79 |
279 | struct RSAKey *rkey; |
280 | struct ssh2_userkey *skey; |
5c58ad2d |
281 | int needs_pass; |
282 | int ret; |
283 | int attempts; |
d4de2d2a |
284 | char *comment; |
285 | struct PassphraseProcStruct pps; |
45cebe79 |
286 | int ver; |
287 | |
288 | ver = keyfile_version(filename); |
289 | if (ver == 0) { |
290 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
291 | MB_OK | MB_ICONERROR); |
292 | return; |
293 | } |
5c58ad2d |
294 | |
45cebe79 |
295 | if (ver == 1) |
296 | needs_pass = rsakey_encrypted(filename, &comment); |
297 | else |
298 | needs_pass = ssh2_userkey_encrypted(filename, &comment); |
5c58ad2d |
299 | attempts = 0; |
45cebe79 |
300 | if (ver == 1) |
301 | rkey = smalloc(sizeof(*rkey)); |
d4de2d2a |
302 | pps.passphrase = passphrase; |
303 | pps.comment = comment; |
5c58ad2d |
304 | do { |
305 | if (needs_pass) { |
306 | int dlgret; |
307 | dlgret = DialogBoxParam(instance, MAKEINTRESOURCE(210), |
308 | NULL, PassphraseProc, |
d4de2d2a |
309 | (LPARAM)&pps); |
5c58ad2d |
310 | if (!dlgret) { |
dcbde236 |
311 | if (comment) sfree(comment); |
45cebe79 |
312 | if (ver == 1) |
313 | sfree(rkey); |
5c58ad2d |
314 | return; /* operation cancelled */ |
315 | } |
316 | } else |
317 | *passphrase = '\0'; |
45cebe79 |
318 | if (ver == 1) |
319 | ret = loadrsakey(filename, rkey, passphrase); |
320 | else { |
321 | skey = ssh2_load_userkey(filename, passphrase); |
322 | if (skey == SSH2_WRONG_PASSPHRASE) |
323 | ret = -1; |
324 | else if (!skey) |
325 | ret = 0; |
326 | else |
327 | ret = 1; |
328 | } |
5c58ad2d |
329 | attempts++; |
330 | } while (ret == -1); |
dcbde236 |
331 | if (comment) sfree(comment); |
5c58ad2d |
332 | if (ret == 0) { |
5af3a3b6 |
333 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
5c58ad2d |
334 | MB_OK | MB_ICONERROR); |
45cebe79 |
335 | if (ver == 1) |
336 | sfree(rkey); |
5c58ad2d |
337 | return; |
338 | } |
45cebe79 |
339 | if (ver == 1) { |
ddecd643 |
340 | if (already_running) { |
341 | unsigned char *request, *response; |
342 | int reqlen, clen, resplen; |
343 | |
ddecd643 |
344 | clen = strlen(rkey->comment); |
ddecd643 |
345 | |
346 | reqlen = 4 + 1 + /* length, message type */ |
347 | 4 + /* bit count */ |
348 | ssh1_bignum_length(rkey->modulus) + |
349 | ssh1_bignum_length(rkey->exponent) + |
350 | ssh1_bignum_length(rkey->private_exponent) + |
351 | ssh1_bignum_length(rkey->iqmp) + |
352 | ssh1_bignum_length(rkey->p) + |
353 | ssh1_bignum_length(rkey->q) + |
354 | 4 + clen /* comment */ |
355 | ; |
ddecd643 |
356 | |
357 | request = smalloc(reqlen); |
ddecd643 |
358 | |
ddecd643 |
359 | request[4] = SSH1_AGENTC_ADD_RSA_IDENTITY; |
ddecd643 |
360 | reqlen = 5; |
361 | PUT_32BIT(request+reqlen, bignum_bitcount(rkey->modulus)); |
362 | reqlen += 4; |
363 | reqlen += ssh1_write_bignum(request+reqlen, rkey->modulus); |
364 | reqlen += ssh1_write_bignum(request+reqlen, rkey->exponent); |
365 | reqlen += ssh1_write_bignum(request+reqlen, rkey->private_exponent); |
366 | reqlen += ssh1_write_bignum(request+reqlen, rkey->iqmp); |
367 | reqlen += ssh1_write_bignum(request+reqlen, rkey->p); |
368 | reqlen += ssh1_write_bignum(request+reqlen, rkey->q); |
369 | PUT_32BIT(request+reqlen, clen); |
370 | memcpy(request+reqlen+4, rkey->comment, clen); |
371 | reqlen += 4+clen; |
372 | PUT_32BIT(request, reqlen-4); |
373 | |
ddecd643 |
374 | agent_query(request, reqlen, &response, &resplen); |
ddecd643 |
375 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
376 | MessageBox(NULL, "The already running Pageant " |
377 | "refused to add the key.", APPNAME, |
378 | MB_OK | MB_ICONERROR); |
379 | } else { |
380 | if (add234(rsakeys, rkey) != rkey) |
381 | sfree(rkey); /* already present, don't waste RAM */ |
382 | } |
45cebe79 |
383 | } else { |
ddecd643 |
384 | if (already_running) { |
385 | unsigned char *request, *response; |
386 | int reqlen, alglen, clen, keybloblen, resplen; |
ddecd643 |
387 | alglen = strlen(skey->alg->name); |
ddecd643 |
388 | clen = strlen(skey->comment); |
ddecd643 |
389 | |
ddecd643 |
390 | keybloblen = skey->alg->openssh_fmtkey(skey->data, NULL, 0); |
ddecd643 |
391 | |
ddecd643 |
392 | reqlen = 4 + 1 + /* length, message type */ |
393 | 4 + alglen + /* algorithm name */ |
394 | keybloblen + /* key data */ |
395 | 4 + clen /* comment */ |
396 | ; |
ddecd643 |
397 | |
ddecd643 |
398 | request = smalloc(reqlen); |
ddecd643 |
399 | |
400 | request[4] = SSH2_AGENTC_ADD_IDENTITY; |
ddecd643 |
401 | reqlen = 5; |
ddecd643 |
402 | PUT_32BIT(request+reqlen, alglen); |
ddecd643 |
403 | reqlen += 4; |
ddecd643 |
404 | memcpy(request+reqlen, skey->alg->name, alglen); |
ddecd643 |
405 | reqlen += alglen; |
ddecd643 |
406 | reqlen += skey->alg->openssh_fmtkey(skey->data, |
407 | request+reqlen, keybloblen); |
ddecd643 |
408 | PUT_32BIT(request+reqlen, clen); |
ddecd643 |
409 | memcpy(request+reqlen+4, skey->comment, clen); |
ddecd643 |
410 | PUT_32BIT(request, reqlen-4); |
ddecd643 |
411 | reqlen += clen+4; |
412 | |
413 | agent_query(request, reqlen, &response, &resplen); |
ddecd643 |
414 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
415 | MessageBox(NULL, "The already running Pageant" |
416 | "refused to add the key.", APPNAME, |
417 | MB_OK | MB_ICONERROR); |
ddecd643 |
418 | } else { |
419 | if (add234(ssh2keys, skey) != skey) { |
420 | skey->alg->freekey(skey->data); |
421 | sfree(skey); /* already present, don't waste RAM */ |
422 | } |
45cebe79 |
423 | } |
424 | } |
5c58ad2d |
425 | } |
426 | |
427 | /* |
428 | * This is the main agent function that answers messages. |
429 | */ |
75cab814 |
430 | static void answer_msg(void *msg) { |
d70f60ae |
431 | unsigned char *p = msg; |
432 | unsigned char *ret = msg; |
5c58ad2d |
433 | int type; |
434 | |
5c58ad2d |
435 | /* |
436 | * Get the message type. |
437 | */ |
438 | type = p[4]; |
439 | |
440 | p += 5; |
5c58ad2d |
441 | switch (type) { |
45cebe79 |
442 | case SSH1_AGENTC_REQUEST_RSA_IDENTITIES: |
5c58ad2d |
443 | /* |
45cebe79 |
444 | * Reply with SSH1_AGENT_RSA_IDENTITIES_ANSWER. |
5c58ad2d |
445 | */ |
446 | { |
5c58ad2d |
447 | struct RSAKey *key; |
448 | int len, nkeys; |
d2371c81 |
449 | int i; |
5c58ad2d |
450 | |
451 | /* |
452 | * Count up the number and length of keys we hold. |
453 | */ |
454 | len = nkeys = 0; |
d2371c81 |
455 | for (i = 0; NULL != (key = index234(rsakeys, i)); i++) { |
5c58ad2d |
456 | nkeys++; |
457 | len += 4; /* length field */ |
458 | len += ssh1_bignum_length(key->exponent); |
459 | len += ssh1_bignum_length(key->modulus); |
460 | len += 4 + strlen(key->comment); |
461 | } |
462 | |
463 | /* |
464 | * Packet header is the obvious five bytes, plus four |
465 | * bytes for the key count. |
466 | */ |
467 | len += 5 + 4; |
d70f60ae |
468 | if (len > AGENT_MAX_MSGLEN) |
469 | goto failure; /* aaargh! too much stuff! */ |
470 | PUT_32BIT(ret, len-4); |
45cebe79 |
471 | ret[4] = SSH1_AGENT_RSA_IDENTITIES_ANSWER; |
d70f60ae |
472 | PUT_32BIT(ret+5, nkeys); |
473 | p = ret + 5 + 4; |
d2371c81 |
474 | for (i = 0; NULL != (key = index234(rsakeys, i)); i++) { |
ddecd643 |
475 | PUT_32BIT(p, bignum_bitcount(key->modulus)); |
d70f60ae |
476 | p += 4; |
477 | p += ssh1_write_bignum(p, key->exponent); |
478 | p += ssh1_write_bignum(p, key->modulus); |
479 | PUT_32BIT(p, strlen(key->comment)); |
480 | memcpy(p+4, key->comment, strlen(key->comment)); |
481 | p += 4 + strlen(key->comment); |
5c58ad2d |
482 | } |
483 | } |
484 | break; |
45cebe79 |
485 | case SSH2_AGENTC_REQUEST_IDENTITIES: |
5c58ad2d |
486 | /* |
45cebe79 |
487 | * Reply with SSH2_AGENT_IDENTITIES_ANSWER. |
488 | */ |
489 | { |
45cebe79 |
490 | struct ssh2_userkey *key; |
491 | int len, nkeys; |
492 | unsigned char *blob; |
493 | int bloblen; |
d2371c81 |
494 | int i; |
45cebe79 |
495 | |
496 | /* |
497 | * Count up the number and length of keys we hold. |
498 | */ |
499 | len = nkeys = 0; |
d2371c81 |
500 | for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) { |
45cebe79 |
501 | nkeys++; |
502 | len += 4; /* length field */ |
503 | blob = key->alg->public_blob(key->data, &bloblen); |
504 | len += bloblen; |
505 | sfree(blob); |
506 | len += 4 + strlen(key->comment); |
507 | } |
508 | |
509 | /* |
510 | * Packet header is the obvious five bytes, plus four |
511 | * bytes for the key count. |
512 | */ |
513 | len += 5 + 4; |
514 | if (len > AGENT_MAX_MSGLEN) |
515 | goto failure; /* aaargh! too much stuff! */ |
516 | PUT_32BIT(ret, len-4); |
517 | ret[4] = SSH2_AGENT_IDENTITIES_ANSWER; |
518 | PUT_32BIT(ret+5, nkeys); |
519 | p = ret + 5 + 4; |
d2371c81 |
520 | for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) { |
45cebe79 |
521 | blob = key->alg->public_blob(key->data, &bloblen); |
522 | PUT_32BIT(p, bloblen); |
523 | p += 4; |
524 | memcpy(p, blob, bloblen); |
525 | p += bloblen; |
526 | sfree(blob); |
527 | PUT_32BIT(p, strlen(key->comment)); |
528 | memcpy(p+4, key->comment, strlen(key->comment)); |
529 | p += 4 + strlen(key->comment); |
530 | } |
531 | } |
532 | break; |
533 | case SSH1_AGENTC_RSA_CHALLENGE: |
534 | /* |
535 | * Reply with either SSH1_AGENT_RSA_RESPONSE or |
5c58ad2d |
536 | * SSH_AGENT_FAILURE, depending on whether we have that key |
537 | * or not. |
538 | */ |
539 | { |
540 | struct RSAKey reqkey, *key; |
541 | Bignum challenge, response; |
542 | unsigned char response_source[48], response_md5[16]; |
543 | struct MD5Context md5c; |
544 | int i, len; |
545 | |
546 | p += 4; |
547 | p += ssh1_read_bignum(p, &reqkey.exponent); |
548 | p += ssh1_read_bignum(p, &reqkey.modulus); |
549 | p += ssh1_read_bignum(p, &challenge); |
550 | memcpy(response_source+32, p, 16); p += 16; |
551 | if (GET_32BIT(p) != 1 || |
552 | (key = find234(rsakeys, &reqkey, NULL)) == NULL) { |
553 | freebn(reqkey.exponent); |
554 | freebn(reqkey.modulus); |
555 | freebn(challenge); |
556 | goto failure; |
557 | } |
558 | response = rsadecrypt(challenge, key); |
559 | for (i = 0; i < 32; i++) |
560 | response_source[i] = bignum_byte(response, 31-i); |
561 | |
562 | MD5Init(&md5c); |
563 | MD5Update(&md5c, response_source, 48); |
564 | MD5Final(response_md5, &md5c); |
565 | memset(response_source, 0, 48); /* burn the evidence */ |
566 | freebn(response); /* and that evidence */ |
567 | freebn(challenge); /* yes, and that evidence */ |
568 | freebn(reqkey.exponent); /* and free some memory ... */ |
569 | freebn(reqkey.modulus); /* ... while we're at it. */ |
570 | |
571 | /* |
572 | * Packet is the obvious five byte header, plus sixteen |
573 | * bytes of MD5. |
574 | */ |
575 | len = 5 + 16; |
d70f60ae |
576 | PUT_32BIT(ret, len-4); |
45cebe79 |
577 | ret[4] = SSH1_AGENT_RSA_RESPONSE; |
d70f60ae |
578 | memcpy(ret+5, response_md5, 16); |
5c58ad2d |
579 | } |
580 | break; |
45cebe79 |
581 | case SSH2_AGENTC_SIGN_REQUEST: |
582 | /* |
583 | * Reply with either SSH2_AGENT_RSA_RESPONSE or |
584 | * SSH_AGENT_FAILURE, depending on whether we have that key |
585 | * or not. |
586 | */ |
587 | { |
588 | struct ssh2_userkey *key; |
589 | struct blob b; |
590 | unsigned char *data, *signature; |
591 | int datalen, siglen, len; |
592 | |
593 | b.len = GET_32BIT(p); |
594 | p += 4; |
595 | b.blob = p; |
596 | p += b.len; |
597 | datalen = GET_32BIT(p); |
598 | p += 4; |
599 | data = p; |
600 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
601 | if (!key) |
602 | goto failure; |
603 | signature = key->alg->sign(key->data, data, datalen, &siglen); |
604 | len = 5+4+siglen; |
605 | PUT_32BIT(ret, len-4); |
606 | ret[4] = SSH2_AGENT_SIGN_RESPONSE; |
607 | PUT_32BIT(ret+5, siglen); |
608 | memcpy(ret+5+4, signature, siglen); |
609 | sfree(signature); |
610 | } |
611 | break; |
612 | case SSH1_AGENTC_ADD_RSA_IDENTITY: |
5c58ad2d |
613 | /* |
614 | * Add to the list and return SSH_AGENT_SUCCESS, or |
615 | * SSH_AGENT_FAILURE if the key was malformed. |
616 | */ |
3c0b3d06 |
617 | { |
618 | struct RSAKey *key; |
619 | char *comment; |
dcbde236 |
620 | key = smalloc(sizeof(struct RSAKey)); |
3c0b3d06 |
621 | memset(key, 0, sizeof(key)); |
622 | p += makekey(p, key, NULL, 1); |
623 | p += makeprivate(p, key); |
45cebe79 |
624 | p += ssh1_read_bignum(p, key->iqmp); /* p^-1 mod q */ |
625 | p += ssh1_read_bignum(p, key->p); /* p */ |
626 | p += ssh1_read_bignum(p, key->q); /* q */ |
dcbde236 |
627 | comment = smalloc(GET_32BIT(p)); |
3c0b3d06 |
628 | if (comment) { |
629 | memcpy(comment, p+4, GET_32BIT(p)); |
630 | key->comment = comment; |
631 | } |
632 | PUT_32BIT(ret, 1); |
633 | ret[4] = SSH_AGENT_FAILURE; |
634 | if (add234(rsakeys, key) == key) { |
635 | keylist_update(); |
636 | ret[4] = SSH_AGENT_SUCCESS; |
637 | } else { |
638 | freersakey(key); |
dcbde236 |
639 | sfree(key); |
3c0b3d06 |
640 | } |
641 | } |
5c58ad2d |
642 | break; |
45cebe79 |
643 | case SSH2_AGENTC_ADD_IDENTITY: |
644 | /* |
645 | * Add to the list and return SSH_AGENT_SUCCESS, or |
646 | * SSH_AGENT_FAILURE if the key was malformed. |
647 | */ |
648 | { |
649 | struct ssh2_userkey *key; |
650 | char *comment, *alg; |
651 | int alglen, commlen; |
652 | int bloblen; |
653 | |
654 | key = smalloc(sizeof(struct ssh2_userkey)); |
655 | |
656 | alglen = GET_32BIT(p); p += 4; |
657 | alg = p; p += alglen; |
658 | /* Add further algorithm names here. */ |
659 | if (alglen == 7 && !memcmp(alg, "ssh-rsa", 7)) |
660 | key->alg = &ssh_rsa; |
661 | else { |
662 | sfree(key); |
663 | goto failure; |
664 | } |
665 | |
666 | bloblen = GET_32BIT((unsigned char *)msg) - (p-(unsigned char *)msg-4); |
667 | key->data = key->alg->openssh_createkey(&p, &bloblen); |
668 | if (!key->data) { |
669 | sfree(key); |
670 | goto failure; |
671 | } |
672 | commlen = GET_32BIT(p); p += 4; |
673 | |
674 | comment = smalloc(commlen+1); |
675 | if (comment) { |
676 | memcpy(comment, p, commlen); |
677 | comment[commlen] = '\0'; |
678 | } |
679 | key->comment = comment; |
680 | |
681 | PUT_32BIT(ret, 1); |
682 | ret[4] = SSH_AGENT_FAILURE; |
683 | if (add234(ssh2keys, key) == key) { |
684 | keylist_update(); |
685 | ret[4] = SSH_AGENT_SUCCESS; |
686 | } else { |
687 | key->alg->freekey(key->data); |
688 | sfree(key->comment); |
689 | sfree(key); |
690 | } |
691 | } |
692 | break; |
693 | case SSH1_AGENTC_REMOVE_RSA_IDENTITY: |
5c58ad2d |
694 | /* |
695 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
696 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
697 | * start with. |
698 | */ |
3c0b3d06 |
699 | { |
700 | struct RSAKey reqkey, *key; |
701 | |
702 | p += makekey(p, &reqkey, NULL, 0); |
703 | key = find234(rsakeys, &reqkey, NULL); |
704 | freebn(reqkey.exponent); |
705 | freebn(reqkey.modulus); |
706 | PUT_32BIT(ret, 1); |
707 | ret[4] = SSH_AGENT_FAILURE; |
708 | if (key) { |
709 | del234(rsakeys, key); |
710 | keylist_update(); |
d4de2d2a |
711 | freersakey(key); |
45cebe79 |
712 | sfree(key); |
3c0b3d06 |
713 | ret[4] = SSH_AGENT_SUCCESS; |
714 | } |
715 | } |
5c58ad2d |
716 | break; |
45cebe79 |
717 | case SSH2_AGENTC_REMOVE_IDENTITY: |
718 | /* |
719 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
720 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
721 | * start with. |
722 | */ |
723 | { |
724 | struct ssh2_userkey *key; |
725 | struct blob b; |
726 | |
727 | b.len = GET_32BIT(p); |
728 | p += 4; |
729 | b.blob = p; |
730 | p += b.len; |
731 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
732 | if (!key) |
733 | goto failure; |
734 | |
735 | PUT_32BIT(ret, 1); |
736 | ret[4] = SSH_AGENT_FAILURE; |
737 | if (key) { |
738 | del234(ssh2keys, key); |
739 | keylist_update(); |
740 | key->alg->freekey(key->data); |
741 | sfree(key); |
742 | ret[4] = SSH_AGENT_SUCCESS; |
743 | } |
744 | } |
745 | break; |
746 | case SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES: |
747 | /* |
748 | * Remove all SSH1 keys. Always returns success. |
749 | */ |
750 | { |
751 | struct RSAKey *rkey; |
45cebe79 |
752 | |
d2371c81 |
753 | while ( (rkey = index234(rsakeys, 0)) != NULL ) { |
45cebe79 |
754 | del234(rsakeys, rkey); |
755 | freersakey(rkey); |
756 | sfree(rkey); |
757 | } |
758 | keylist_update(); |
759 | |
760 | PUT_32BIT(ret, 1); |
761 | ret[4] = SSH_AGENT_SUCCESS; |
762 | } |
763 | break; |
764 | case SSH2_AGENTC_REMOVE_ALL_IDENTITIES: |
765 | /* |
766 | * Remove all SSH2 keys. Always returns success. |
767 | */ |
768 | { |
769 | struct ssh2_userkey *skey; |
45cebe79 |
770 | |
d2371c81 |
771 | while ( (skey = index234(ssh2keys, 0)) != NULL ) { |
45cebe79 |
772 | del234(ssh2keys, skey); |
773 | skey->alg->freekey(skey->data); |
774 | sfree(skey); |
775 | } |
776 | keylist_update(); |
777 | |
778 | PUT_32BIT(ret, 1); |
779 | ret[4] = SSH_AGENT_SUCCESS; |
780 | } |
781 | break; |
5c58ad2d |
782 | default: |
783 | failure: |
784 | /* |
785 | * Unrecognised message. Return SSH_AGENT_FAILURE. |
786 | */ |
d70f60ae |
787 | PUT_32BIT(ret, 1); |
788 | ret[4] = SSH_AGENT_FAILURE; |
5c58ad2d |
789 | break; |
790 | } |
5c58ad2d |
791 | } |
792 | |
793 | /* |
794 | * Key comparison function for the 2-3-4 tree of RSA keys. |
795 | */ |
45cebe79 |
796 | static int cmpkeys_rsa(void *av, void *bv) { |
5c58ad2d |
797 | struct RSAKey *a = (struct RSAKey *)av; |
798 | struct RSAKey *b = (struct RSAKey *)bv; |
799 | Bignum am, bm; |
800 | int alen, blen; |
801 | |
802 | am = a->modulus; |
803 | bm = b->modulus; |
804 | /* |
805 | * Compare by length of moduli. |
806 | */ |
ddecd643 |
807 | alen = bignum_bitcount(am); |
808 | blen = bignum_bitcount(bm); |
5c58ad2d |
809 | if (alen > blen) return +1; else if (alen < blen) return -1; |
810 | /* |
811 | * Now compare by moduli themselves. |
812 | */ |
813 | alen = (alen + 7) / 8; /* byte count */ |
814 | while (alen-- > 0) { |
815 | int abyte, bbyte; |
816 | abyte = bignum_byte(am, alen); |
817 | bbyte = bignum_byte(bm, alen); |
818 | if (abyte > bbyte) return +1; else if (abyte < bbyte) return -1; |
819 | } |
820 | /* |
821 | * Give up. |
822 | */ |
823 | return 0; |
824 | } |
825 | |
45cebe79 |
826 | /* |
827 | * Key comparison function for the 2-3-4 tree of SSH2 keys. |
828 | */ |
829 | static int cmpkeys_ssh2(void *av, void *bv) { |
830 | struct ssh2_userkey *a = (struct ssh2_userkey *)av; |
831 | struct ssh2_userkey *b = (struct ssh2_userkey *)bv; |
832 | int i; |
833 | int alen, blen; |
834 | unsigned char *ablob, *bblob; |
835 | int c; |
836 | |
837 | /* |
838 | * Compare purely by public blob. |
839 | */ |
840 | ablob = a->alg->public_blob(a->data, &alen); |
841 | bblob = b->alg->public_blob(b->data, &blen); |
842 | |
843 | c = 0; |
844 | for (i = 0; i < alen && i < blen; i++) { |
845 | if (ablob[i] < bblob[i]) { |
846 | c = -1; break; |
847 | } else if (ablob[i] > bblob[i]) { |
848 | c = +1; break; |
849 | } |
850 | } |
851 | if (c == 0 && i < alen) c = +1; /* a is longer */ |
852 | if (c == 0 && i < blen) c = -1; /* a is longer */ |
853 | |
854 | sfree(ablob); |
855 | sfree(bblob); |
856 | |
857 | return c; |
858 | } |
859 | |
860 | /* |
861 | * Key comparison function for looking up a blob in the 2-3-4 tree |
862 | * of SSH2 keys. |
863 | */ |
864 | static int cmpkeys_ssh2_asymm(void *av, void *bv) { |
865 | struct blob *a = (struct blob *)av; |
866 | struct ssh2_userkey *b = (struct ssh2_userkey *)bv; |
867 | int i; |
868 | int alen, blen; |
869 | unsigned char *ablob, *bblob; |
870 | int c; |
871 | |
872 | /* |
873 | * Compare purely by public blob. |
874 | */ |
875 | ablob = a->blob; |
876 | alen = a->len; |
877 | bblob = b->alg->public_blob(b->data, &blen); |
878 | |
879 | c = 0; |
880 | for (i = 0; i < alen && i < blen; i++) { |
881 | if (ablob[i] < bblob[i]) { |
882 | c = -1; break; |
883 | } else if (ablob[i] > bblob[i]) { |
884 | c = +1; break; |
885 | } |
886 | } |
887 | if (c == 0 && i < alen) c = +1; /* a is longer */ |
888 | if (c == 0 && i < blen) c = -1; /* a is longer */ |
889 | |
890 | sfree(bblob); |
891 | |
892 | return c; |
893 | } |
894 | |
5c58ad2d |
895 | static void error(char *s) { |
896 | MessageBox(hwnd, s, APPNAME, MB_OK | MB_ICONERROR); |
897 | } |
898 | |
899 | /* |
ab162329 |
900 | * Prompt for a key file to add, and add it. |
901 | */ |
902 | static void prompt_add_keyfile(void) { |
903 | OPENFILENAME of; |
904 | char filename[FILENAME_MAX]; |
905 | memset(&of, 0, sizeof(of)); |
906 | #ifdef OPENFILENAME_SIZE_VERSION_400 |
907 | of.lStructSize = OPENFILENAME_SIZE_VERSION_400; |
908 | #else |
909 | of.lStructSize = sizeof(of); |
910 | #endif |
911 | of.hwndOwner = hwnd; |
912 | of.lpstrFilter = "All Files\0*\0\0\0"; |
913 | of.lpstrCustomFilter = NULL; |
914 | of.nFilterIndex = 1; |
915 | of.lpstrFile = filename; *filename = '\0'; |
916 | of.nMaxFile = sizeof(filename); |
917 | of.lpstrFileTitle = NULL; |
918 | of.lpstrInitialDir = NULL; |
919 | of.lpstrTitle = "Select Private Key File"; |
920 | of.Flags = 0; |
921 | if (GetOpenFileName(&of)) { |
922 | add_keyfile(filename); |
923 | keylist_update(); |
924 | } |
925 | } |
926 | |
927 | /* |
5c58ad2d |
928 | * Dialog-box function for the key list box. |
929 | */ |
930 | static int CALLBACK KeyListProc(HWND hwnd, UINT msg, |
931 | WPARAM wParam, LPARAM lParam) { |
45cebe79 |
932 | struct RSAKey *rkey; |
933 | struct ssh2_userkey *skey; |
5c58ad2d |
934 | |
935 | switch (msg) { |
936 | case WM_INITDIALOG: |
45cebe79 |
937 | /* |
938 | * Centre the window. |
939 | */ |
940 | { /* centre the window */ |
941 | RECT rs, rd; |
942 | HWND hw; |
943 | |
944 | hw = GetDesktopWindow(); |
945 | if (GetWindowRect (hw, &rs) && GetWindowRect (hwnd, &rd)) |
946 | MoveWindow (hwnd, (rs.right + rs.left + rd.left - rd.right)/2, |
947 | (rs.bottom + rs.top + rd.top - rd.bottom)/2, |
948 | rd.right-rd.left, rd.bottom-rd.top, TRUE); |
949 | } |
950 | |
1c2a93c4 |
951 | keylist = hwnd; |
952 | { |
45cebe79 |
953 | static int tabs[] = {35, 60, 210}; |
954 | SendDlgItemMessage (hwnd, 100, LB_SETTABSTOPS, |
955 | sizeof(tabs)/sizeof(*tabs), (LPARAM) tabs); |
1c2a93c4 |
956 | } |
957 | keylist_update(); |
5c58ad2d |
958 | return 0; |
959 | case WM_COMMAND: |
960 | switch (LOWORD(wParam)) { |
961 | case IDOK: |
962 | case IDCANCEL: |
963 | keylist = NULL; |
964 | DestroyWindow(hwnd); |
965 | return 0; |
966 | case 101: /* add key */ |
967 | if (HIWORD(wParam) == BN_CLICKED || |
968 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
ab162329 |
969 | prompt_add_keyfile(); |
5c58ad2d |
970 | } |
971 | return 0; |
972 | case 102: /* remove key */ |
973 | if (HIWORD(wParam) == BN_CLICKED || |
974 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
975 | int n = SendDlgItemMessage (hwnd, 100, LB_GETCURSEL, 0, 0); |
d2371c81 |
976 | int i; |
f70a606e |
977 | if (n == LB_ERR) { |
5c58ad2d |
978 | MessageBeep(0); |
979 | break; |
980 | } |
d2371c81 |
981 | for (i = 0; NULL != (rkey = index234(rsakeys, i)); i++) |
5c58ad2d |
982 | if (n-- == 0) |
983 | break; |
45cebe79 |
984 | if (rkey) { |
985 | del234(rsakeys, rkey); |
986 | freersakey(rkey); |
987 | sfree(rkey); |
988 | } else { |
d2371c81 |
989 | for (i = 0; NULL != (skey = index234(ssh2keys, i)); i++) |
45cebe79 |
990 | if (n-- == 0) |
991 | break; |
992 | if (skey) { |
993 | del234(ssh2keys, skey); |
994 | skey->alg->freekey(skey->data); |
995 | sfree(skey); |
996 | } |
997 | } |
1c2a93c4 |
998 | keylist_update(); |
5c58ad2d |
999 | } |
1000 | return 0; |
1001 | } |
1002 | return 0; |
1003 | case WM_CLOSE: |
1004 | keylist = NULL; |
1005 | DestroyWindow(hwnd); |
1006 | return 0; |
1007 | } |
1008 | return 0; |
1009 | } |
1010 | |
1011 | static LRESULT CALLBACK WndProc (HWND hwnd, UINT message, |
1012 | WPARAM wParam, LPARAM lParam) { |
1013 | int ret; |
1014 | static int menuinprogress; |
1015 | |
1016 | switch (message) { |
1017 | case WM_SYSTRAY: |
1018 | if (lParam == WM_RBUTTONUP) { |
1019 | POINT cursorpos; |
1020 | GetCursorPos(&cursorpos); |
1021 | PostMessage(hwnd, WM_SYSTRAY2, cursorpos.x, cursorpos.y); |
905beba5 |
1022 | } else if (lParam == WM_LBUTTONDBLCLK) { |
1023 | /* Equivalent to IDM_VIEWKEYS. */ |
1024 | PostMessage(hwnd, WM_COMMAND, IDM_VIEWKEYS, 0); |
5c58ad2d |
1025 | } |
1026 | break; |
1027 | case WM_SYSTRAY2: |
1028 | if (!menuinprogress) { |
1029 | menuinprogress = 1; |
1030 | SetForegroundWindow(hwnd); |
1031 | ret = TrackPopupMenu(systray_menu, |
1032 | TPM_RIGHTALIGN | TPM_BOTTOMALIGN | |
1033 | TPM_RIGHTBUTTON, |
1034 | wParam, lParam, 0, hwnd, NULL); |
1035 | menuinprogress = 0; |
1036 | } |
1037 | break; |
1038 | case WM_COMMAND: |
1039 | case WM_SYSCOMMAND: |
1040 | switch (wParam & ~0xF) { /* low 4 bits reserved to Windows */ |
1041 | case IDM_CLOSE: |
1042 | SendMessage(hwnd, WM_CLOSE, 0, 0); |
1043 | break; |
1044 | case IDM_VIEWKEYS: |
1045 | if (!keylist) { |
1046 | keylist = CreateDialog (instance, MAKEINTRESOURCE(211), |
1047 | NULL, KeyListProc); |
1048 | ShowWindow (keylist, SW_SHOWNORMAL); |
905beba5 |
1049 | /* |
1050 | * Sometimes the window comes up minimised / hidden |
1051 | * for no obvious reason. Prevent this. |
1052 | */ |
1053 | SetForegroundWindow(keylist); |
1054 | SetWindowPos (keylist, HWND_TOP, 0, 0, 0, 0, |
1055 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
5c58ad2d |
1056 | } |
1057 | break; |
ab162329 |
1058 | case IDM_ADDKEY: |
1059 | prompt_add_keyfile(); |
1060 | break; |
5af3a3b6 |
1061 | case IDM_ABOUT: |
1062 | if (!aboutbox) { |
1063 | aboutbox = CreateDialog (instance, MAKEINTRESOURCE(213), |
1064 | NULL, AboutProc); |
1065 | ShowWindow (aboutbox, SW_SHOWNORMAL); |
1066 | /* |
1067 | * Sometimes the window comes up minimised / hidden |
1068 | * for no obvious reason. Prevent this. |
1069 | */ |
1070 | SetForegroundWindow(aboutbox); |
1071 | SetWindowPos (aboutbox, HWND_TOP, 0, 0, 0, 0, |
1072 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
1073 | } |
1074 | break; |
5c58ad2d |
1075 | } |
1076 | break; |
1077 | case WM_DESTROY: |
1078 | PostQuitMessage (0); |
1079 | return 0; |
1080 | case WM_COPYDATA: |
1081 | { |
1082 | COPYDATASTRUCT *cds; |
d70f60ae |
1083 | char *mapname; |
1084 | void *p; |
1085 | HANDLE filemap, proc; |
1086 | PSID mapowner, procowner; |
1087 | PSECURITY_DESCRIPTOR psd1 = NULL, psd2 = NULL; |
1088 | int ret = 0; |
5c58ad2d |
1089 | |
1090 | cds = (COPYDATASTRUCT *)lParam; |
d70f60ae |
1091 | if (cds->dwData != AGENT_COPYDATA_ID) |
1092 | return 0; /* not our message, mate */ |
1093 | mapname = (char *)cds->lpData; |
1094 | if (mapname[cds->cbData - 1] != '\0') |
1095 | return 0; /* failure to be ASCIZ! */ |
1096 | #ifdef DEBUG_IPC |
1097 | debug(("mapname is :%s:\r\n", mapname)); |
1098 | #endif |
1099 | filemap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, mapname); |
1100 | #ifdef DEBUG_IPC |
1101 | debug(("filemap is %p\r\n", filemap)); |
1102 | #endif |
1103 | if (filemap != NULL && filemap != INVALID_HANDLE_VALUE) { |
1104 | int rc; |
123bc6ea |
1105 | #ifndef NO_SECURITY |
016ef8ab |
1106 | if (has_security) { |
1107 | if ((proc = OpenProcess(MAXIMUM_ALLOWED, FALSE, |
1108 | GetCurrentProcessId())) == NULL) { |
d70f60ae |
1109 | #ifdef DEBUG_IPC |
016ef8ab |
1110 | debug(("couldn't get handle for process\r\n")); |
d70f60ae |
1111 | #endif |
016ef8ab |
1112 | return 0; |
1113 | } |
1114 | if (getsecurityinfo(proc, SE_KERNEL_OBJECT, |
1115 | OWNER_SECURITY_INFORMATION, |
1116 | &procowner, NULL, NULL, NULL, |
1117 | &psd2) != ERROR_SUCCESS) { |
d70f60ae |
1118 | #ifdef DEBUG_IPC |
016ef8ab |
1119 | debug(("couldn't get owner info for process\r\n")); |
d70f60ae |
1120 | #endif |
016ef8ab |
1121 | CloseHandle(proc); |
1122 | return 0; /* unable to get security info */ |
1123 | } |
d70f60ae |
1124 | CloseHandle(proc); |
016ef8ab |
1125 | if ((rc = getsecurityinfo(filemap, SE_KERNEL_OBJECT, |
1126 | OWNER_SECURITY_INFORMATION, |
1127 | &mapowner, NULL, NULL, NULL, |
1128 | &psd1) != ERROR_SUCCESS)) { |
d70f60ae |
1129 | #ifdef DEBUG_IPC |
016ef8ab |
1130 | debug(("couldn't get owner info for filemap: %d\r\n", rc)); |
d70f60ae |
1131 | #endif |
016ef8ab |
1132 | return 0; |
1133 | } |
1134 | #ifdef DEBUG_IPC |
1135 | debug(("got security stuff\r\n")); |
1136 | #endif |
1137 | if (!EqualSid(mapowner, procowner)) |
1138 | return 0; /* security ID mismatch! */ |
d70f60ae |
1139 | #ifdef DEBUG_IPC |
016ef8ab |
1140 | debug(("security stuff matched\r\n")); |
d70f60ae |
1141 | #endif |
016ef8ab |
1142 | LocalFree(psd1); |
1143 | LocalFree(psd2); |
1144 | } else { |
d70f60ae |
1145 | #ifdef DEBUG_IPC |
016ef8ab |
1146 | debug(("security APIs not present\r\n")); |
d70f60ae |
1147 | #endif |
016ef8ab |
1148 | } |
123bc6ea |
1149 | #endif |
d70f60ae |
1150 | p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0); |
1151 | #ifdef DEBUG_IPC |
1152 | debug(("p is %p\r\n", p)); |
1153 | {int i; for(i=0;i<5;i++)debug(("p[%d]=%02x\r\n", i, ((unsigned char *)p)[i]));} |
1154 | #endif |
1155 | answer_msg(p); |
1156 | ret = 1; |
1157 | UnmapViewOfFile(p); |
1158 | } |
1159 | CloseHandle(filemap); |
1160 | return ret; |
5c58ad2d |
1161 | } |
5c58ad2d |
1162 | } |
1163 | |
1164 | return DefWindowProc (hwnd, message, wParam, lParam); |
1165 | } |
1166 | |
ddecd643 |
1167 | /* |
1168 | * Fork and Exec the command in cmdline. [DBW] |
1169 | */ |
1170 | void spawn_cmd(char *cmdline, int show) { |
1171 | if (ShellExecute(NULL, _T("open"), cmdline, |
1172 | NULL, NULL, show) <= (HINSTANCE) 32) { |
1173 | TCHAR sMsg[140]; |
1174 | sprintf(sMsg, _T("Failed to run \"%.100s\", Error: %d"), cmdline, |
1175 | GetLastError()); |
1176 | MessageBox(NULL, sMsg, APPNAME, MB_OK | MB_ICONEXCLAMATION); |
1177 | } |
1178 | } |
1179 | |
5c58ad2d |
1180 | int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) { |
1181 | WNDCLASS wndclass; |
5c58ad2d |
1182 | MSG msg; |
016ef8ab |
1183 | OSVERSIONINFO osi; |
1184 | HMODULE advapi; |
ddecd643 |
1185 | char *command = NULL; |
1186 | int added_keys = 0; |
016ef8ab |
1187 | |
1188 | /* |
1189 | * Determine whether we're an NT system (should have security |
1190 | * APIs) or a non-NT system (don't do security). |
1191 | */ |
1192 | memset(&osi, 0, sizeof(OSVERSIONINFO)); |
1193 | osi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); |
1194 | if (GetVersionEx(&osi) && osi.dwPlatformId==VER_PLATFORM_WIN32_NT) { |
1195 | has_security = TRUE; |
1196 | } else |
1197 | has_security = FALSE; |
1198 | |
1199 | if (has_security) { |
123bc6ea |
1200 | #ifndef NO_SECURITY |
016ef8ab |
1201 | /* |
ddecd643 |
1202 | * Attempt to get the security API we need. |
016ef8ab |
1203 | */ |
1204 | advapi = LoadLibrary("ADVAPI32.DLL"); |
1205 | getsecurityinfo = (gsi_fn_t)GetProcAddress(advapi, "GetSecurityInfo"); |
1206 | if (!getsecurityinfo) { |
1207 | MessageBox(NULL, |
1208 | "Unable to access security APIs. Pageant will\n" |
1209 | "not run, in case it causes a security breach.", |
1210 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
1211 | return 1; |
1212 | } |
123bc6ea |
1213 | #else |
1214 | MessageBox(NULL, |
1215 | "This program has been compiled for Win9X and will\n" |
1216 | "not run on NT, in case it causes a security breach.", |
1217 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
1218 | return 1; |
1219 | #endif |
016ef8ab |
1220 | } else |
1221 | advapi = NULL; |
5c58ad2d |
1222 | |
1223 | instance = inst; |
1224 | |
ddecd643 |
1225 | /* |
1226 | * Find out if Pageant is already running. |
1227 | */ |
1228 | already_running = FALSE; |
260f3dec |
1229 | if (agent_exists()) |
ddecd643 |
1230 | already_running = TRUE; |
1231 | else { |
1232 | |
1233 | if (!prev) { |
1234 | wndclass.style = 0; |
1235 | wndclass.lpfnWndProc = WndProc; |
1236 | wndclass.cbClsExtra = 0; |
1237 | wndclass.cbWndExtra = 0; |
1238 | wndclass.hInstance = inst; |
1239 | wndclass.hIcon = LoadIcon (inst, |
1240 | MAKEINTRESOURCE(IDI_MAINICON)); |
1241 | wndclass.hCursor = LoadCursor (NULL, IDC_IBEAM); |
1242 | wndclass.hbrBackground = GetStockObject (BLACK_BRUSH); |
1243 | wndclass.lpszMenuName = NULL; |
1244 | wndclass.lpszClassName = APPNAME; |
1245 | |
1246 | RegisterClass (&wndclass); |
1247 | } |
5c58ad2d |
1248 | |
ddecd643 |
1249 | hwnd = keylist = NULL; |
5c58ad2d |
1250 | |
ddecd643 |
1251 | hwnd = CreateWindow (APPNAME, APPNAME, |
1252 | WS_OVERLAPPEDWINDOW | WS_VSCROLL, |
1253 | CW_USEDEFAULT, CW_USEDEFAULT, |
1254 | 100, 100, NULL, NULL, inst, NULL); |
5c58ad2d |
1255 | |
ddecd643 |
1256 | /* Set up a system tray icon */ |
1257 | { |
1258 | BOOL res; |
1259 | NOTIFYICONDATA tnid; |
1260 | HICON hicon; |
5c58ad2d |
1261 | |
1262 | #ifdef NIM_SETVERSION |
ddecd643 |
1263 | tnid.uVersion = 0; |
1264 | res = Shell_NotifyIcon(NIM_SETVERSION, &tnid); |
5c58ad2d |
1265 | #endif |
1266 | |
ddecd643 |
1267 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
1268 | tnid.hWnd = hwnd; |
1269 | tnid.uID = 1; /* unique within this systray use */ |
1270 | tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; |
1271 | tnid.uCallbackMessage = WM_SYSTRAY; |
1272 | tnid.hIcon = hicon = LoadIcon (instance, MAKEINTRESOURCE(201)); |
1273 | strcpy(tnid.szTip, "Pageant (PuTTY authentication agent)"); |
1274 | |
1275 | res = Shell_NotifyIcon(NIM_ADD, &tnid); |
1276 | |
1277 | if (hicon) |
1278 | DestroyIcon(hicon); |
1279 | |
1280 | systray_menu = CreatePopupMenu(); |
1281 | /* accelerators used: vkxa */ |
1282 | AppendMenu (systray_menu, MF_ENABLED, IDM_VIEWKEYS, "&View Keys"); |
1283 | AppendMenu (systray_menu, MF_ENABLED, IDM_ADDKEY, "Add &Key"); |
1284 | AppendMenu (systray_menu, MF_ENABLED, IDM_ABOUT, "&About"); |
1285 | AppendMenu (systray_menu, MF_ENABLED, IDM_CLOSE, "E&xit"); |
1286 | } |
5c58ad2d |
1287 | |
ddecd643 |
1288 | ShowWindow (hwnd, SW_HIDE); |
5c58ad2d |
1289 | |
ddecd643 |
1290 | /* |
1291 | * Initialise storage for RSA keys. |
1292 | */ |
1293 | rsakeys = newtree234(cmpkeys_rsa); |
1294 | ssh2keys = newtree234(cmpkeys_ssh2); |
1295 | |
1296 | } |
dacbd0e8 |
1297 | |
1298 | /* |
45cebe79 |
1299 | * Process the command line and add keys as listed on it. |
ddecd643 |
1300 | * If we already determined that we need to spawn a program from above we |
1301 | * need to ignore the first two arguments. [DBW] |
5c58ad2d |
1302 | */ |
1303 | { |
8c42f28c |
1304 | char *p; |
1305 | int inquotes = 0; |
ddecd643 |
1306 | int ignorearg = 0; |
8c42f28c |
1307 | p = cmdline; |
dacbd0e8 |
1308 | while (*p) { |
1309 | while (*p && isspace(*p)) p++; |
1310 | if (*p && !isspace(*p)) { |
8c42f28c |
1311 | char *q = p, *pp = p; |
1312 | while (*p && (inquotes || !isspace(*p))) |
1313 | { |
1314 | if (*p == '"') { |
1315 | inquotes = !inquotes; |
1316 | p++; |
1317 | continue; |
1318 | } |
1319 | *pp++ = *p++; |
1320 | } |
1321 | if (*pp) { |
1322 | if (*p) p++; |
1323 | *pp++ = '\0'; |
1324 | } |
ddecd643 |
1325 | if (!strcmp(q, "-c")) { |
1326 | /* |
1327 | * If we see `-c', then the rest of the |
1328 | * command line should be treated as a |
1329 | * command to be spawned. |
1330 | */ |
1331 | while (*p && isspace(*p)) p++; |
1332 | command = p; |
1333 | break; |
1334 | } else { |
1335 | add_keyfile(q); |
1336 | added_keys = TRUE; |
1337 | } |
dacbd0e8 |
1338 | } |
1339 | } |
5c58ad2d |
1340 | } |
1341 | |
ddecd643 |
1342 | if (command) spawn_cmd (command, show); |
1343 | |
1344 | /* |
1345 | * If Pageant was already running, we leave now. If we haven't |
1346 | * even taken any auxiliary action (spawned a command or added |
1347 | * keys), complain. |
1348 | */ |
1349 | if (already_running) { |
1350 | if (!command && !added_keys) { |
1351 | MessageBox(NULL, "Pageant is already running", "Pageant Error", |
1352 | MB_ICONERROR | MB_OK); |
1353 | } |
1354 | if (advapi) FreeLibrary(advapi); |
1355 | return 0; |
1356 | } |
1357 | |
5c58ad2d |
1358 | /* |
dacbd0e8 |
1359 | * Main message loop. |
5c58ad2d |
1360 | */ |
5c58ad2d |
1361 | while (GetMessage(&msg, NULL, 0, 0) == 1) { |
1362 | TranslateMessage(&msg); |
1363 | DispatchMessage(&msg); |
1364 | } |
1365 | |
1366 | /* Clean up the system tray icon */ |
1367 | { |
1368 | NOTIFYICONDATA tnid; |
1369 | |
1370 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
1371 | tnid.hWnd = hwnd; |
1372 | tnid.uID = 1; |
1373 | |
1374 | Shell_NotifyIcon(NIM_DELETE, &tnid); |
1375 | |
1376 | DestroyMenu(systray_menu); |
1377 | } |
1378 | |
016ef8ab |
1379 | if (advapi) FreeLibrary(advapi); |
5c58ad2d |
1380 | exit(msg.wParam); |
1381 | } |