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 | |
14 | // FIXME |
15 | #define DEBUG |
16 | #ifdef DEBUG |
17 | void dprintf(char *fmt, ...); |
18 | #define debug(x) (dprintf x) |
19 | #else |
20 | #define debug(x) |
21 | #endif |
22 | |
02237972 |
23 | |
5c58ad2d |
24 | #include "ssh.h" |
25 | #include "tree234.h" |
26 | |
27 | #define IDI_MAINICON 200 |
28 | #define IDI_TRAYICON 201 |
29 | |
30 | #define WM_XUSER (WM_USER + 0x2000) |
31 | #define WM_SYSTRAY (WM_XUSER + 6) |
32 | #define WM_SYSTRAY2 (WM_XUSER + 7) |
d70f60ae |
33 | |
34 | #define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ |
35 | |
36 | /* |
37 | * FIXME: maybe some day we can sort this out ... |
38 | */ |
39 | #define AGENT_MAX_MSGLEN 8192 |
5c58ad2d |
40 | |
41 | #define IDM_CLOSE 0x0010 |
42 | #define IDM_VIEWKEYS 0x0020 |
ab162329 |
43 | #define IDM_ADDKEY 0x0030 |
44 | #define IDM_ABOUT 0x0040 |
5c58ad2d |
45 | |
46 | #define APPNAME "Pageant" |
47 | |
5af3a3b6 |
48 | extern char ver[]; |
49 | |
75cab814 |
50 | static HINSTANCE instance; |
51 | static HWND hwnd; |
52 | static HWND keylist; |
53 | static HWND aboutbox; |
54 | static HMENU systray_menu; |
ddecd643 |
55 | static int already_running; |
5c58ad2d |
56 | |
45cebe79 |
57 | static tree234 *rsakeys, *ssh2keys; |
5c58ad2d |
58 | |
75cab814 |
59 | static int has_security; |
123bc6ea |
60 | #ifndef NO_SECURITY |
016ef8ab |
61 | typedef DWORD (WINAPI *gsi_fn_t) |
62 | (HANDLE, SE_OBJECT_TYPE, SECURITY_INFORMATION, |
63 | PSID *, PSID *, PACL *, PACL *, |
64 | PSECURITY_DESCRIPTOR *); |
75cab814 |
65 | static gsi_fn_t getsecurityinfo; |
123bc6ea |
66 | #endif |
016ef8ab |
67 | |
5c58ad2d |
68 | /* |
69 | * We need this to link with the RSA code, because rsaencrypt() |
45cebe79 |
70 | * pads its data with random bytes. Since we only use rsadecrypt() |
71 | * and the signing functions, which are deterministic, this should |
72 | * never be called. |
73 | * |
5c58ad2d |
74 | * If it _is_ called, there is a _serious_ problem, because it |
75 | * won't generate true random numbers. So we must scream, panic, |
76 | * and exit immediately if that should happen. |
77 | */ |
78 | int random_byte(void) { |
79 | MessageBox(hwnd, "Internal Error", APPNAME, MB_OK | MB_ICONERROR); |
80 | exit(0); |
81 | } |
82 | |
83 | /* |
45cebe79 |
84 | * Blob structure for passing to the asymmetric SSH2 key compare |
85 | * function, prototyped here. |
86 | */ |
87 | struct blob { |
88 | unsigned char *blob; |
89 | int len; |
90 | }; |
91 | static int cmpkeys_ssh2_asymm(void *av, void *bv); |
92 | |
93 | /* |
5c58ad2d |
94 | * This function is needed to link with the DES code. We need not |
95 | * have it do anything at all. |
96 | */ |
97 | void logevent(char *msg) { |
98 | } |
99 | |
100 | #define GET_32BIT(cp) \ |
101 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
102 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
103 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
104 | ((unsigned long)(unsigned char)(cp)[3])) |
105 | |
106 | #define PUT_32BIT(cp, value) { \ |
107 | (cp)[0] = (unsigned char)((value) >> 24); \ |
108 | (cp)[1] = (unsigned char)((value) >> 16); \ |
109 | (cp)[2] = (unsigned char)((value) >> 8); \ |
110 | (cp)[3] = (unsigned char)(value); } |
111 | |
112 | #define PASSPHRASE_MAXLEN 512 |
113 | |
d4de2d2a |
114 | struct PassphraseProcStruct { |
115 | char *passphrase; |
116 | char *comment; |
117 | }; |
118 | |
5c58ad2d |
119 | /* |
5af3a3b6 |
120 | * Dialog-box function for the Licence box. |
121 | */ |
122 | static int CALLBACK LicenceProc (HWND hwnd, UINT msg, |
123 | WPARAM wParam, LPARAM lParam) { |
124 | switch (msg) { |
125 | case WM_INITDIALOG: |
126 | return 1; |
127 | case WM_COMMAND: |
128 | switch (LOWORD(wParam)) { |
129 | case IDOK: |
130 | EndDialog(hwnd, 1); |
131 | return 0; |
132 | } |
133 | return 0; |
134 | case WM_CLOSE: |
135 | EndDialog(hwnd, 1); |
136 | return 0; |
137 | } |
138 | return 0; |
139 | } |
140 | |
141 | /* |
142 | * Dialog-box function for the About box. |
143 | */ |
144 | static int CALLBACK AboutProc (HWND hwnd, UINT msg, |
145 | WPARAM wParam, LPARAM lParam) { |
146 | switch (msg) { |
147 | case WM_INITDIALOG: |
148 | SetDlgItemText (hwnd, 100, ver); |
149 | return 1; |
150 | case WM_COMMAND: |
151 | switch (LOWORD(wParam)) { |
152 | case IDOK: |
153 | aboutbox = NULL; |
154 | DestroyWindow (hwnd); |
155 | return 0; |
156 | case 101: |
157 | EnableWindow(hwnd, 0); |
158 | DialogBox (instance, MAKEINTRESOURCE(214), NULL, LicenceProc); |
159 | EnableWindow(hwnd, 1); |
160 | SetActiveWindow(hwnd); |
161 | return 0; |
162 | } |
163 | return 0; |
164 | case WM_CLOSE: |
165 | aboutbox = NULL; |
166 | DestroyWindow (hwnd); |
167 | return 0; |
168 | } |
169 | return 0; |
170 | } |
171 | |
172 | /* |
5c58ad2d |
173 | * Dialog-box function for the passphrase box. |
174 | */ |
175 | static int CALLBACK PassphraseProc(HWND hwnd, UINT msg, |
176 | WPARAM wParam, LPARAM lParam) { |
177 | static char *passphrase; |
d4de2d2a |
178 | struct PassphraseProcStruct *p; |
5c58ad2d |
179 | |
180 | switch (msg) { |
181 | case WM_INITDIALOG: |
45cebe79 |
182 | /* |
183 | * Centre the window. |
184 | */ |
185 | { /* centre the window */ |
186 | RECT rs, rd; |
187 | HWND hw; |
188 | |
189 | hw = GetDesktopWindow(); |
190 | if (GetWindowRect (hw, &rs) && GetWindowRect (hwnd, &rd)) |
191 | MoveWindow (hwnd, (rs.right + rs.left + rd.left - rd.right)/2, |
192 | (rs.bottom + rs.top + rd.top - rd.bottom)/2, |
193 | rd.right-rd.left, rd.bottom-rd.top, TRUE); |
194 | } |
195 | |
ab162329 |
196 | SetForegroundWindow(hwnd); |
197 | SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0, |
198 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
d4de2d2a |
199 | p = (struct PassphraseProcStruct *)lParam; |
200 | passphrase = p->passphrase; |
201 | if (p->comment) |
202 | SetDlgItemText(hwnd, 101, p->comment); |
5c58ad2d |
203 | *passphrase = 0; |
204 | return 0; |
205 | case WM_COMMAND: |
206 | switch (LOWORD(wParam)) { |
207 | case IDOK: |
208 | if (*passphrase) |
209 | EndDialog (hwnd, 1); |
210 | else |
211 | MessageBeep (0); |
212 | return 0; |
213 | case IDCANCEL: |
214 | EndDialog (hwnd, 0); |
215 | return 0; |
216 | case 102: /* edit box */ |
217 | if (HIWORD(wParam) == EN_CHANGE) { |
218 | GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1); |
219 | passphrase[PASSPHRASE_MAXLEN-1] = '\0'; |
220 | } |
221 | return 0; |
222 | } |
223 | return 0; |
224 | case WM_CLOSE: |
225 | EndDialog (hwnd, 0); |
226 | return 0; |
227 | } |
228 | return 0; |
229 | } |
230 | |
231 | /* |
3c0b3d06 |
232 | * Update the visible key list. |
233 | */ |
75cab814 |
234 | static void keylist_update(void) { |
45cebe79 |
235 | struct RSAKey *rkey; |
236 | struct ssh2_userkey *skey; |
3c0b3d06 |
237 | enum234 e; |
238 | |
239 | if (keylist) { |
240 | SendDlgItemMessage(keylist, 100, LB_RESETCONTENT, 0, 0); |
45cebe79 |
241 | for (rkey = first234(rsakeys, &e); rkey; rkey = next234(&e)) { |
242 | char listentry[512], *p; |
243 | /* |
244 | * Replace two spaces in the fingerprint with tabs, for |
245 | * nice alignment in the box. |
246 | */ |
247 | strcpy(listentry, "ssh1\t"); |
248 | p = listentry+strlen(listentry); |
249 | rsa_fingerprint(p, sizeof(listentry)-(p-listentry), rkey); |
250 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
251 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
252 | SendDlgItemMessage (keylist, 100, LB_ADDSTRING, |
253 | 0, (LPARAM)listentry); |
254 | } |
255 | for (skey = first234(ssh2keys, &e); skey; skey = next234(&e)) { |
1c2a93c4 |
256 | char listentry[512], *p; |
45cebe79 |
257 | int len; |
1c2a93c4 |
258 | /* |
259 | * Replace two spaces in the fingerprint with tabs, for |
260 | * nice alignment in the box. |
261 | */ |
45cebe79 |
262 | p = skey->alg->fingerprint(skey->data); |
263 | strncpy(listentry, p, sizeof(listentry)); |
1c2a93c4 |
264 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
265 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
45cebe79 |
266 | len = strlen(listentry); |
267 | if (len < sizeof(listentry)-2) { |
268 | listentry[len] = '\t'; |
269 | strncpy(listentry+len+1, skey->comment, sizeof(listentry)-len-1); |
270 | } |
3c0b3d06 |
271 | SendDlgItemMessage (keylist, 100, LB_ADDSTRING, |
1c2a93c4 |
272 | 0, (LPARAM)listentry); |
3c0b3d06 |
273 | } |
274 | SendDlgItemMessage (keylist, 100, LB_SETCURSEL, (WPARAM) -1, 0); |
275 | } |
276 | } |
277 | |
278 | /* |
5c58ad2d |
279 | * This function loads a key from a file and adds it. |
280 | */ |
75cab814 |
281 | static void add_keyfile(char *filename) { |
5c58ad2d |
282 | char passphrase[PASSPHRASE_MAXLEN]; |
45cebe79 |
283 | struct RSAKey *rkey; |
284 | struct ssh2_userkey *skey; |
5c58ad2d |
285 | int needs_pass; |
286 | int ret; |
287 | int attempts; |
d4de2d2a |
288 | char *comment; |
289 | struct PassphraseProcStruct pps; |
45cebe79 |
290 | int ver; |
291 | |
292 | ver = keyfile_version(filename); |
293 | if (ver == 0) { |
294 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
295 | MB_OK | MB_ICONERROR); |
296 | return; |
297 | } |
5c58ad2d |
298 | |
ddecd643 |
299 | debug(("ooh %d\n", __LINE__)); |
45cebe79 |
300 | if (ver == 1) |
301 | needs_pass = rsakey_encrypted(filename, &comment); |
302 | else |
303 | needs_pass = ssh2_userkey_encrypted(filename, &comment); |
ddecd643 |
304 | debug(("ooh %d\n", __LINE__)); |
5c58ad2d |
305 | attempts = 0; |
ddecd643 |
306 | debug(("ooh %d\n", __LINE__)); |
45cebe79 |
307 | if (ver == 1) |
308 | rkey = smalloc(sizeof(*rkey)); |
ddecd643 |
309 | debug(("ooh %d\n", __LINE__)); |
d4de2d2a |
310 | pps.passphrase = passphrase; |
311 | pps.comment = comment; |
ddecd643 |
312 | debug(("ooh %d\n", __LINE__)); |
5c58ad2d |
313 | do { |
ddecd643 |
314 | debug(("ooh %d\n", __LINE__)); |
5c58ad2d |
315 | if (needs_pass) { |
316 | int dlgret; |
317 | dlgret = DialogBoxParam(instance, MAKEINTRESOURCE(210), |
318 | NULL, PassphraseProc, |
d4de2d2a |
319 | (LPARAM)&pps); |
5c58ad2d |
320 | if (!dlgret) { |
dcbde236 |
321 | if (comment) sfree(comment); |
45cebe79 |
322 | if (ver == 1) |
323 | sfree(rkey); |
5c58ad2d |
324 | return; /* operation cancelled */ |
325 | } |
326 | } else |
327 | *passphrase = '\0'; |
ddecd643 |
328 | debug(("ooh %d\n", __LINE__)); |
45cebe79 |
329 | if (ver == 1) |
330 | ret = loadrsakey(filename, rkey, passphrase); |
331 | else { |
ddecd643 |
332 | debug(("ooh %d\n", __LINE__)); |
45cebe79 |
333 | skey = ssh2_load_userkey(filename, passphrase); |
ddecd643 |
334 | debug(("ooh %d\n", __LINE__)); |
45cebe79 |
335 | if (skey == SSH2_WRONG_PASSPHRASE) |
336 | ret = -1; |
337 | else if (!skey) |
338 | ret = 0; |
339 | else |
340 | ret = 1; |
341 | } |
5c58ad2d |
342 | attempts++; |
343 | } while (ret == -1); |
ddecd643 |
344 | debug(("ooh %d\n", __LINE__)); |
dcbde236 |
345 | if (comment) sfree(comment); |
ddecd643 |
346 | debug(("ooh %d\n", __LINE__)); |
5c58ad2d |
347 | if (ret == 0) { |
5af3a3b6 |
348 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
5c58ad2d |
349 | MB_OK | MB_ICONERROR); |
45cebe79 |
350 | if (ver == 1) |
351 | sfree(rkey); |
5c58ad2d |
352 | return; |
353 | } |
ddecd643 |
354 | debug(("ooh %d\n", __LINE__)); |
45cebe79 |
355 | if (ver == 1) { |
ddecd643 |
356 | if (already_running) { |
357 | unsigned char *request, *response; |
358 | int reqlen, clen, resplen; |
359 | |
360 | debug(("ooh %d\n", __LINE__)); |
361 | clen = strlen(rkey->comment); |
362 | debug(("ooh %d\n", __LINE__)); |
363 | |
364 | reqlen = 4 + 1 + /* length, message type */ |
365 | 4 + /* bit count */ |
366 | ssh1_bignum_length(rkey->modulus) + |
367 | ssh1_bignum_length(rkey->exponent) + |
368 | ssh1_bignum_length(rkey->private_exponent) + |
369 | ssh1_bignum_length(rkey->iqmp) + |
370 | ssh1_bignum_length(rkey->p) + |
371 | ssh1_bignum_length(rkey->q) + |
372 | 4 + clen /* comment */ |
373 | ; |
374 | debug(("ooh %d %d\n", __LINE__, reqlen)); |
375 | |
376 | request = smalloc(reqlen); |
377 | debug(("ooh %d\n", __LINE__)); |
378 | |
379 | debug(("ooh %d\n", __LINE__)); |
380 | request[4] = SSH1_AGENTC_ADD_RSA_IDENTITY; |
381 | debug(("ooh %d\n", __LINE__)); |
382 | reqlen = 5; |
383 | PUT_32BIT(request+reqlen, bignum_bitcount(rkey->modulus)); |
384 | reqlen += 4; |
385 | reqlen += ssh1_write_bignum(request+reqlen, rkey->modulus); |
386 | reqlen += ssh1_write_bignum(request+reqlen, rkey->exponent); |
387 | reqlen += ssh1_write_bignum(request+reqlen, rkey->private_exponent); |
388 | reqlen += ssh1_write_bignum(request+reqlen, rkey->iqmp); |
389 | reqlen += ssh1_write_bignum(request+reqlen, rkey->p); |
390 | reqlen += ssh1_write_bignum(request+reqlen, rkey->q); |
391 | PUT_32BIT(request+reqlen, clen); |
392 | memcpy(request+reqlen+4, rkey->comment, clen); |
393 | reqlen += 4+clen; |
394 | PUT_32BIT(request, reqlen-4); |
395 | |
396 | debug(("ooh %d\n", __LINE__)); |
397 | agent_query(request, reqlen, &response, &resplen); |
398 | debug(("ooh %d\n", __LINE__)); |
399 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
400 | MessageBox(NULL, "The already running Pageant " |
401 | "refused to add the key.", APPNAME, |
402 | MB_OK | MB_ICONERROR); |
403 | } else { |
404 | if (add234(rsakeys, rkey) != rkey) |
405 | sfree(rkey); /* already present, don't waste RAM */ |
406 | } |
45cebe79 |
407 | } else { |
ddecd643 |
408 | if (already_running) { |
409 | unsigned char *request, *response; |
410 | int reqlen, alglen, clen, keybloblen, resplen; |
411 | debug(("ooh %d\n", __LINE__)); |
412 | alglen = strlen(skey->alg->name); |
413 | debug(("ooh %d\n", __LINE__)); |
414 | clen = strlen(skey->comment); |
415 | debug(("ooh %d\n", __LINE__)); |
416 | |
417 | debug(("ooh %d\n", __LINE__)); |
418 | keybloblen = skey->alg->openssh_fmtkey(skey->data, NULL, 0); |
419 | debug(("ooh %d\n", __LINE__)); |
420 | |
421 | debug(("ooh %d\n", __LINE__)); |
422 | reqlen = 4 + 1 + /* length, message type */ |
423 | 4 + alglen + /* algorithm name */ |
424 | keybloblen + /* key data */ |
425 | 4 + clen /* comment */ |
426 | ; |
427 | debug(("ooh %d\n", __LINE__)); |
428 | |
429 | debug(("ooh %d\n", __LINE__)); |
430 | request = smalloc(reqlen); |
431 | debug(("ooh %d\n", __LINE__)); |
432 | |
433 | request[4] = SSH2_AGENTC_ADD_IDENTITY; |
434 | debug(("ooh %d\n", __LINE__)); |
435 | reqlen = 5; |
436 | debug(("ooh %d\n", __LINE__)); |
437 | PUT_32BIT(request+reqlen, alglen); |
438 | debug(("ooh %d\n", __LINE__)); |
439 | reqlen += 4; |
440 | debug(("ooh %d\n", __LINE__)); |
441 | memcpy(request+reqlen, skey->alg->name, alglen); |
442 | debug(("ooh %d\n", __LINE__)); |
443 | reqlen += alglen; |
444 | debug(("ooh %d\n", __LINE__)); |
445 | reqlen += skey->alg->openssh_fmtkey(skey->data, |
446 | request+reqlen, keybloblen); |
447 | debug(("ooh %d\n", __LINE__)); |
448 | PUT_32BIT(request+reqlen, clen); |
449 | debug(("ooh %d\n", __LINE__)); |
450 | memcpy(request+reqlen+4, skey->comment, clen); |
451 | debug(("ooh %d\n", __LINE__)); |
452 | PUT_32BIT(request, reqlen-4); |
453 | debug(("ooh %d\n", __LINE__)); |
454 | reqlen += clen+4; |
455 | |
456 | agent_query(request, reqlen, &response, &resplen); |
457 | debug(("ooh %d\n", __LINE__)); |
458 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
459 | MessageBox(NULL, "The already running Pageant" |
460 | "refused to add the key.", APPNAME, |
461 | MB_OK | MB_ICONERROR); |
462 | debug(("ooh %d\n", __LINE__)); |
463 | } else { |
464 | if (add234(ssh2keys, skey) != skey) { |
465 | skey->alg->freekey(skey->data); |
466 | sfree(skey); /* already present, don't waste RAM */ |
467 | } |
45cebe79 |
468 | } |
469 | } |
5c58ad2d |
470 | } |
471 | |
472 | /* |
473 | * This is the main agent function that answers messages. |
474 | */ |
75cab814 |
475 | static void answer_msg(void *msg) { |
d70f60ae |
476 | unsigned char *p = msg; |
477 | unsigned char *ret = msg; |
5c58ad2d |
478 | int type; |
479 | |
5c58ad2d |
480 | /* |
481 | * Get the message type. |
482 | */ |
483 | type = p[4]; |
484 | |
485 | p += 5; |
5c58ad2d |
486 | switch (type) { |
45cebe79 |
487 | case SSH1_AGENTC_REQUEST_RSA_IDENTITIES: |
5c58ad2d |
488 | /* |
45cebe79 |
489 | * Reply with SSH1_AGENT_RSA_IDENTITIES_ANSWER. |
5c58ad2d |
490 | */ |
491 | { |
492 | enum234 e; |
493 | struct RSAKey *key; |
494 | int len, nkeys; |
495 | |
496 | /* |
497 | * Count up the number and length of keys we hold. |
498 | */ |
499 | len = nkeys = 0; |
500 | for (key = first234(rsakeys, &e); key; key = next234(&e)) { |
501 | nkeys++; |
502 | len += 4; /* length field */ |
503 | len += ssh1_bignum_length(key->exponent); |
504 | len += ssh1_bignum_length(key->modulus); |
505 | len += 4 + strlen(key->comment); |
506 | } |
507 | |
508 | /* |
509 | * Packet header is the obvious five bytes, plus four |
510 | * bytes for the key count. |
511 | */ |
512 | len += 5 + 4; |
d70f60ae |
513 | if (len > AGENT_MAX_MSGLEN) |
514 | goto failure; /* aaargh! too much stuff! */ |
515 | PUT_32BIT(ret, len-4); |
45cebe79 |
516 | ret[4] = SSH1_AGENT_RSA_IDENTITIES_ANSWER; |
d70f60ae |
517 | PUT_32BIT(ret+5, nkeys); |
518 | p = ret + 5 + 4; |
519 | for (key = first234(rsakeys, &e); key; key = next234(&e)) { |
ddecd643 |
520 | PUT_32BIT(p, bignum_bitcount(key->modulus)); |
d70f60ae |
521 | p += 4; |
522 | p += ssh1_write_bignum(p, key->exponent); |
523 | p += ssh1_write_bignum(p, key->modulus); |
524 | PUT_32BIT(p, strlen(key->comment)); |
525 | memcpy(p+4, key->comment, strlen(key->comment)); |
526 | p += 4 + strlen(key->comment); |
5c58ad2d |
527 | } |
528 | } |
529 | break; |
45cebe79 |
530 | case SSH2_AGENTC_REQUEST_IDENTITIES: |
5c58ad2d |
531 | /* |
45cebe79 |
532 | * Reply with SSH2_AGENT_IDENTITIES_ANSWER. |
533 | */ |
534 | { |
535 | enum234 e; |
536 | struct ssh2_userkey *key; |
537 | int len, nkeys; |
538 | unsigned char *blob; |
539 | int bloblen; |
540 | |
541 | /* |
542 | * Count up the number and length of keys we hold. |
543 | */ |
544 | len = nkeys = 0; |
545 | for (key = first234(ssh2keys, &e); key; key = next234(&e)) { |
546 | nkeys++; |
547 | len += 4; /* length field */ |
548 | blob = key->alg->public_blob(key->data, &bloblen); |
549 | len += bloblen; |
550 | sfree(blob); |
551 | len += 4 + strlen(key->comment); |
552 | } |
553 | |
554 | /* |
555 | * Packet header is the obvious five bytes, plus four |
556 | * bytes for the key count. |
557 | */ |
558 | len += 5 + 4; |
559 | if (len > AGENT_MAX_MSGLEN) |
560 | goto failure; /* aaargh! too much stuff! */ |
561 | PUT_32BIT(ret, len-4); |
562 | ret[4] = SSH2_AGENT_IDENTITIES_ANSWER; |
563 | PUT_32BIT(ret+5, nkeys); |
564 | p = ret + 5 + 4; |
565 | for (key = first234(ssh2keys, &e); key; key = next234(&e)) { |
566 | blob = key->alg->public_blob(key->data, &bloblen); |
567 | PUT_32BIT(p, bloblen); |
568 | p += 4; |
569 | memcpy(p, blob, bloblen); |
570 | p += bloblen; |
571 | sfree(blob); |
572 | PUT_32BIT(p, strlen(key->comment)); |
573 | memcpy(p+4, key->comment, strlen(key->comment)); |
574 | p += 4 + strlen(key->comment); |
575 | } |
576 | } |
577 | break; |
578 | case SSH1_AGENTC_RSA_CHALLENGE: |
579 | /* |
580 | * Reply with either SSH1_AGENT_RSA_RESPONSE or |
5c58ad2d |
581 | * SSH_AGENT_FAILURE, depending on whether we have that key |
582 | * or not. |
583 | */ |
584 | { |
585 | struct RSAKey reqkey, *key; |
586 | Bignum challenge, response; |
587 | unsigned char response_source[48], response_md5[16]; |
588 | struct MD5Context md5c; |
589 | int i, len; |
590 | |
591 | p += 4; |
592 | p += ssh1_read_bignum(p, &reqkey.exponent); |
593 | p += ssh1_read_bignum(p, &reqkey.modulus); |
594 | p += ssh1_read_bignum(p, &challenge); |
595 | memcpy(response_source+32, p, 16); p += 16; |
596 | if (GET_32BIT(p) != 1 || |
597 | (key = find234(rsakeys, &reqkey, NULL)) == NULL) { |
598 | freebn(reqkey.exponent); |
599 | freebn(reqkey.modulus); |
600 | freebn(challenge); |
601 | goto failure; |
602 | } |
603 | response = rsadecrypt(challenge, key); |
604 | for (i = 0; i < 32; i++) |
605 | response_source[i] = bignum_byte(response, 31-i); |
606 | |
607 | MD5Init(&md5c); |
608 | MD5Update(&md5c, response_source, 48); |
609 | MD5Final(response_md5, &md5c); |
610 | memset(response_source, 0, 48); /* burn the evidence */ |
611 | freebn(response); /* and that evidence */ |
612 | freebn(challenge); /* yes, and that evidence */ |
613 | freebn(reqkey.exponent); /* and free some memory ... */ |
614 | freebn(reqkey.modulus); /* ... while we're at it. */ |
615 | |
616 | /* |
617 | * Packet is the obvious five byte header, plus sixteen |
618 | * bytes of MD5. |
619 | */ |
620 | len = 5 + 16; |
d70f60ae |
621 | PUT_32BIT(ret, len-4); |
45cebe79 |
622 | ret[4] = SSH1_AGENT_RSA_RESPONSE; |
d70f60ae |
623 | memcpy(ret+5, response_md5, 16); |
5c58ad2d |
624 | } |
625 | break; |
45cebe79 |
626 | case SSH2_AGENTC_SIGN_REQUEST: |
627 | /* |
628 | * Reply with either SSH2_AGENT_RSA_RESPONSE or |
629 | * SSH_AGENT_FAILURE, depending on whether we have that key |
630 | * or not. |
631 | */ |
632 | { |
633 | struct ssh2_userkey *key; |
634 | struct blob b; |
635 | unsigned char *data, *signature; |
636 | int datalen, siglen, len; |
637 | |
638 | b.len = GET_32BIT(p); |
639 | p += 4; |
640 | b.blob = p; |
641 | p += b.len; |
642 | datalen = GET_32BIT(p); |
643 | p += 4; |
644 | data = p; |
645 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
646 | if (!key) |
647 | goto failure; |
648 | signature = key->alg->sign(key->data, data, datalen, &siglen); |
649 | len = 5+4+siglen; |
650 | PUT_32BIT(ret, len-4); |
651 | ret[4] = SSH2_AGENT_SIGN_RESPONSE; |
652 | PUT_32BIT(ret+5, siglen); |
653 | memcpy(ret+5+4, signature, siglen); |
654 | sfree(signature); |
655 | } |
656 | break; |
657 | case SSH1_AGENTC_ADD_RSA_IDENTITY: |
5c58ad2d |
658 | /* |
659 | * Add to the list and return SSH_AGENT_SUCCESS, or |
660 | * SSH_AGENT_FAILURE if the key was malformed. |
661 | */ |
3c0b3d06 |
662 | { |
663 | struct RSAKey *key; |
664 | char *comment; |
dcbde236 |
665 | key = smalloc(sizeof(struct RSAKey)); |
3c0b3d06 |
666 | memset(key, 0, sizeof(key)); |
667 | p += makekey(p, key, NULL, 1); |
668 | p += makeprivate(p, key); |
45cebe79 |
669 | p += ssh1_read_bignum(p, key->iqmp); /* p^-1 mod q */ |
670 | p += ssh1_read_bignum(p, key->p); /* p */ |
671 | p += ssh1_read_bignum(p, key->q); /* q */ |
dcbde236 |
672 | comment = smalloc(GET_32BIT(p)); |
3c0b3d06 |
673 | if (comment) { |
674 | memcpy(comment, p+4, GET_32BIT(p)); |
675 | key->comment = comment; |
676 | } |
677 | PUT_32BIT(ret, 1); |
678 | ret[4] = SSH_AGENT_FAILURE; |
679 | if (add234(rsakeys, key) == key) { |
680 | keylist_update(); |
681 | ret[4] = SSH_AGENT_SUCCESS; |
682 | } else { |
683 | freersakey(key); |
dcbde236 |
684 | sfree(key); |
3c0b3d06 |
685 | } |
686 | } |
5c58ad2d |
687 | break; |
45cebe79 |
688 | case SSH2_AGENTC_ADD_IDENTITY: |
689 | /* |
690 | * Add to the list and return SSH_AGENT_SUCCESS, or |
691 | * SSH_AGENT_FAILURE if the key was malformed. |
692 | */ |
693 | { |
694 | struct ssh2_userkey *key; |
695 | char *comment, *alg; |
696 | int alglen, commlen; |
697 | int bloblen; |
698 | |
699 | key = smalloc(sizeof(struct ssh2_userkey)); |
700 | |
701 | alglen = GET_32BIT(p); p += 4; |
702 | alg = p; p += alglen; |
703 | /* Add further algorithm names here. */ |
704 | if (alglen == 7 && !memcmp(alg, "ssh-rsa", 7)) |
705 | key->alg = &ssh_rsa; |
706 | else { |
707 | sfree(key); |
708 | goto failure; |
709 | } |
710 | |
711 | bloblen = GET_32BIT((unsigned char *)msg) - (p-(unsigned char *)msg-4); |
712 | key->data = key->alg->openssh_createkey(&p, &bloblen); |
713 | if (!key->data) { |
714 | sfree(key); |
715 | goto failure; |
716 | } |
717 | commlen = GET_32BIT(p); p += 4; |
718 | |
719 | comment = smalloc(commlen+1); |
720 | if (comment) { |
721 | memcpy(comment, p, commlen); |
722 | comment[commlen] = '\0'; |
723 | } |
724 | key->comment = comment; |
725 | |
726 | PUT_32BIT(ret, 1); |
727 | ret[4] = SSH_AGENT_FAILURE; |
728 | if (add234(ssh2keys, key) == key) { |
729 | keylist_update(); |
730 | ret[4] = SSH_AGENT_SUCCESS; |
731 | } else { |
732 | key->alg->freekey(key->data); |
733 | sfree(key->comment); |
734 | sfree(key); |
735 | } |
736 | } |
737 | break; |
738 | case SSH1_AGENTC_REMOVE_RSA_IDENTITY: |
5c58ad2d |
739 | /* |
740 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
741 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
742 | * start with. |
743 | */ |
3c0b3d06 |
744 | { |
745 | struct RSAKey reqkey, *key; |
746 | |
747 | p += makekey(p, &reqkey, NULL, 0); |
748 | key = find234(rsakeys, &reqkey, NULL); |
749 | freebn(reqkey.exponent); |
750 | freebn(reqkey.modulus); |
751 | PUT_32BIT(ret, 1); |
752 | ret[4] = SSH_AGENT_FAILURE; |
753 | if (key) { |
754 | del234(rsakeys, key); |
755 | keylist_update(); |
d4de2d2a |
756 | freersakey(key); |
45cebe79 |
757 | sfree(key); |
3c0b3d06 |
758 | ret[4] = SSH_AGENT_SUCCESS; |
759 | } |
760 | } |
5c58ad2d |
761 | break; |
45cebe79 |
762 | case SSH2_AGENTC_REMOVE_IDENTITY: |
763 | /* |
764 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
765 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
766 | * start with. |
767 | */ |
768 | { |
769 | struct ssh2_userkey *key; |
770 | struct blob b; |
771 | |
772 | b.len = GET_32BIT(p); |
773 | p += 4; |
774 | b.blob = p; |
775 | p += b.len; |
776 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
777 | if (!key) |
778 | goto failure; |
779 | |
780 | PUT_32BIT(ret, 1); |
781 | ret[4] = SSH_AGENT_FAILURE; |
782 | if (key) { |
783 | del234(ssh2keys, key); |
784 | keylist_update(); |
785 | key->alg->freekey(key->data); |
786 | sfree(key); |
787 | ret[4] = SSH_AGENT_SUCCESS; |
788 | } |
789 | } |
790 | break; |
791 | case SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES: |
792 | /* |
793 | * Remove all SSH1 keys. Always returns success. |
794 | */ |
795 | { |
796 | struct RSAKey *rkey; |
797 | enum234 e; |
798 | |
799 | while ( (rkey = first234(rsakeys, &e)) != NULL ) { |
800 | del234(rsakeys, rkey); |
801 | freersakey(rkey); |
802 | sfree(rkey); |
803 | } |
804 | keylist_update(); |
805 | |
806 | PUT_32BIT(ret, 1); |
807 | ret[4] = SSH_AGENT_SUCCESS; |
808 | } |
809 | break; |
810 | case SSH2_AGENTC_REMOVE_ALL_IDENTITIES: |
811 | /* |
812 | * Remove all SSH2 keys. Always returns success. |
813 | */ |
814 | { |
815 | struct ssh2_userkey *skey; |
816 | enum234 e; |
817 | |
818 | while ( (skey = first234(ssh2keys, &e)) != NULL ) { |
819 | del234(ssh2keys, skey); |
820 | skey->alg->freekey(skey->data); |
821 | sfree(skey); |
822 | } |
823 | keylist_update(); |
824 | |
825 | PUT_32BIT(ret, 1); |
826 | ret[4] = SSH_AGENT_SUCCESS; |
827 | } |
828 | break; |
5c58ad2d |
829 | default: |
830 | failure: |
831 | /* |
832 | * Unrecognised message. Return SSH_AGENT_FAILURE. |
833 | */ |
d70f60ae |
834 | PUT_32BIT(ret, 1); |
835 | ret[4] = SSH_AGENT_FAILURE; |
5c58ad2d |
836 | break; |
837 | } |
5c58ad2d |
838 | } |
839 | |
840 | /* |
841 | * Key comparison function for the 2-3-4 tree of RSA keys. |
842 | */ |
45cebe79 |
843 | static int cmpkeys_rsa(void *av, void *bv) { |
5c58ad2d |
844 | struct RSAKey *a = (struct RSAKey *)av; |
845 | struct RSAKey *b = (struct RSAKey *)bv; |
846 | Bignum am, bm; |
847 | int alen, blen; |
848 | |
849 | am = a->modulus; |
850 | bm = b->modulus; |
851 | /* |
852 | * Compare by length of moduli. |
853 | */ |
ddecd643 |
854 | alen = bignum_bitcount(am); |
855 | blen = bignum_bitcount(bm); |
5c58ad2d |
856 | if (alen > blen) return +1; else if (alen < blen) return -1; |
857 | /* |
858 | * Now compare by moduli themselves. |
859 | */ |
860 | alen = (alen + 7) / 8; /* byte count */ |
861 | while (alen-- > 0) { |
862 | int abyte, bbyte; |
863 | abyte = bignum_byte(am, alen); |
864 | bbyte = bignum_byte(bm, alen); |
865 | if (abyte > bbyte) return +1; else if (abyte < bbyte) return -1; |
866 | } |
867 | /* |
868 | * Give up. |
869 | */ |
870 | return 0; |
871 | } |
872 | |
45cebe79 |
873 | /* |
874 | * Key comparison function for the 2-3-4 tree of SSH2 keys. |
875 | */ |
876 | static int cmpkeys_ssh2(void *av, void *bv) { |
877 | struct ssh2_userkey *a = (struct ssh2_userkey *)av; |
878 | struct ssh2_userkey *b = (struct ssh2_userkey *)bv; |
879 | int i; |
880 | int alen, blen; |
881 | unsigned char *ablob, *bblob; |
882 | int c; |
883 | |
884 | /* |
885 | * Compare purely by public blob. |
886 | */ |
887 | ablob = a->alg->public_blob(a->data, &alen); |
888 | bblob = b->alg->public_blob(b->data, &blen); |
889 | |
890 | c = 0; |
891 | for (i = 0; i < alen && i < blen; i++) { |
892 | if (ablob[i] < bblob[i]) { |
893 | c = -1; break; |
894 | } else if (ablob[i] > bblob[i]) { |
895 | c = +1; break; |
896 | } |
897 | } |
898 | if (c == 0 && i < alen) c = +1; /* a is longer */ |
899 | if (c == 0 && i < blen) c = -1; /* a is longer */ |
900 | |
901 | sfree(ablob); |
902 | sfree(bblob); |
903 | |
904 | return c; |
905 | } |
906 | |
907 | /* |
908 | * Key comparison function for looking up a blob in the 2-3-4 tree |
909 | * of SSH2 keys. |
910 | */ |
911 | static int cmpkeys_ssh2_asymm(void *av, void *bv) { |
912 | struct blob *a = (struct blob *)av; |
913 | struct ssh2_userkey *b = (struct ssh2_userkey *)bv; |
914 | int i; |
915 | int alen, blen; |
916 | unsigned char *ablob, *bblob; |
917 | int c; |
918 | |
919 | /* |
920 | * Compare purely by public blob. |
921 | */ |
922 | ablob = a->blob; |
923 | alen = a->len; |
924 | bblob = b->alg->public_blob(b->data, &blen); |
925 | |
926 | c = 0; |
927 | for (i = 0; i < alen && i < blen; i++) { |
928 | if (ablob[i] < bblob[i]) { |
929 | c = -1; break; |
930 | } else if (ablob[i] > bblob[i]) { |
931 | c = +1; break; |
932 | } |
933 | } |
934 | if (c == 0 && i < alen) c = +1; /* a is longer */ |
935 | if (c == 0 && i < blen) c = -1; /* a is longer */ |
936 | |
937 | sfree(bblob); |
938 | |
939 | return c; |
940 | } |
941 | |
5c58ad2d |
942 | static void error(char *s) { |
943 | MessageBox(hwnd, s, APPNAME, MB_OK | MB_ICONERROR); |
944 | } |
945 | |
946 | /* |
ab162329 |
947 | * Prompt for a key file to add, and add it. |
948 | */ |
949 | static void prompt_add_keyfile(void) { |
950 | OPENFILENAME of; |
951 | char filename[FILENAME_MAX]; |
952 | memset(&of, 0, sizeof(of)); |
953 | #ifdef OPENFILENAME_SIZE_VERSION_400 |
954 | of.lStructSize = OPENFILENAME_SIZE_VERSION_400; |
955 | #else |
956 | of.lStructSize = sizeof(of); |
957 | #endif |
958 | of.hwndOwner = hwnd; |
959 | of.lpstrFilter = "All Files\0*\0\0\0"; |
960 | of.lpstrCustomFilter = NULL; |
961 | of.nFilterIndex = 1; |
962 | of.lpstrFile = filename; *filename = '\0'; |
963 | of.nMaxFile = sizeof(filename); |
964 | of.lpstrFileTitle = NULL; |
965 | of.lpstrInitialDir = NULL; |
966 | of.lpstrTitle = "Select Private Key File"; |
967 | of.Flags = 0; |
968 | if (GetOpenFileName(&of)) { |
969 | add_keyfile(filename); |
970 | keylist_update(); |
971 | } |
972 | } |
973 | |
974 | /* |
5c58ad2d |
975 | * Dialog-box function for the key list box. |
976 | */ |
977 | static int CALLBACK KeyListProc(HWND hwnd, UINT msg, |
978 | WPARAM wParam, LPARAM lParam) { |
979 | enum234 e; |
45cebe79 |
980 | struct RSAKey *rkey; |
981 | struct ssh2_userkey *skey; |
5c58ad2d |
982 | |
983 | switch (msg) { |
984 | case WM_INITDIALOG: |
45cebe79 |
985 | /* |
986 | * Centre the window. |
987 | */ |
988 | { /* centre the window */ |
989 | RECT rs, rd; |
990 | HWND hw; |
991 | |
992 | hw = GetDesktopWindow(); |
993 | if (GetWindowRect (hw, &rs) && GetWindowRect (hwnd, &rd)) |
994 | MoveWindow (hwnd, (rs.right + rs.left + rd.left - rd.right)/2, |
995 | (rs.bottom + rs.top + rd.top - rd.bottom)/2, |
996 | rd.right-rd.left, rd.bottom-rd.top, TRUE); |
997 | } |
998 | |
1c2a93c4 |
999 | keylist = hwnd; |
1000 | { |
45cebe79 |
1001 | static int tabs[] = {35, 60, 210}; |
1002 | SendDlgItemMessage (hwnd, 100, LB_SETTABSTOPS, |
1003 | sizeof(tabs)/sizeof(*tabs), (LPARAM) tabs); |
1c2a93c4 |
1004 | } |
1005 | keylist_update(); |
5c58ad2d |
1006 | return 0; |
1007 | case WM_COMMAND: |
1008 | switch (LOWORD(wParam)) { |
1009 | case IDOK: |
1010 | case IDCANCEL: |
1011 | keylist = NULL; |
1012 | DestroyWindow(hwnd); |
1013 | return 0; |
1014 | case 101: /* add key */ |
1015 | if (HIWORD(wParam) == BN_CLICKED || |
1016 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
ab162329 |
1017 | prompt_add_keyfile(); |
5c58ad2d |
1018 | } |
1019 | return 0; |
1020 | case 102: /* remove key */ |
1021 | if (HIWORD(wParam) == BN_CLICKED || |
1022 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
1023 | int n = SendDlgItemMessage (hwnd, 100, LB_GETCURSEL, 0, 0); |
f70a606e |
1024 | if (n == LB_ERR) { |
5c58ad2d |
1025 | MessageBeep(0); |
1026 | break; |
1027 | } |
45cebe79 |
1028 | for (rkey = first234(rsakeys, &e); rkey; rkey = next234(&e)) |
5c58ad2d |
1029 | if (n-- == 0) |
1030 | break; |
45cebe79 |
1031 | if (rkey) { |
1032 | del234(rsakeys, rkey); |
1033 | freersakey(rkey); |
1034 | sfree(rkey); |
1035 | } else { |
1036 | for (skey = first234(ssh2keys, &e); skey; skey = next234(&e)) |
1037 | if (n-- == 0) |
1038 | break; |
1039 | if (skey) { |
1040 | del234(ssh2keys, skey); |
1041 | skey->alg->freekey(skey->data); |
1042 | sfree(skey); |
1043 | } |
1044 | } |
1c2a93c4 |
1045 | keylist_update(); |
5c58ad2d |
1046 | } |
1047 | return 0; |
1048 | } |
1049 | return 0; |
1050 | case WM_CLOSE: |
1051 | keylist = NULL; |
1052 | DestroyWindow(hwnd); |
1053 | return 0; |
1054 | } |
1055 | return 0; |
1056 | } |
1057 | |
1058 | static LRESULT CALLBACK WndProc (HWND hwnd, UINT message, |
1059 | WPARAM wParam, LPARAM lParam) { |
1060 | int ret; |
1061 | static int menuinprogress; |
1062 | |
1063 | switch (message) { |
1064 | case WM_SYSTRAY: |
1065 | if (lParam == WM_RBUTTONUP) { |
1066 | POINT cursorpos; |
1067 | GetCursorPos(&cursorpos); |
1068 | PostMessage(hwnd, WM_SYSTRAY2, cursorpos.x, cursorpos.y); |
905beba5 |
1069 | } else if (lParam == WM_LBUTTONDBLCLK) { |
1070 | /* Equivalent to IDM_VIEWKEYS. */ |
1071 | PostMessage(hwnd, WM_COMMAND, IDM_VIEWKEYS, 0); |
5c58ad2d |
1072 | } |
1073 | break; |
1074 | case WM_SYSTRAY2: |
1075 | if (!menuinprogress) { |
1076 | menuinprogress = 1; |
1077 | SetForegroundWindow(hwnd); |
1078 | ret = TrackPopupMenu(systray_menu, |
1079 | TPM_RIGHTALIGN | TPM_BOTTOMALIGN | |
1080 | TPM_RIGHTBUTTON, |
1081 | wParam, lParam, 0, hwnd, NULL); |
1082 | menuinprogress = 0; |
1083 | } |
1084 | break; |
1085 | case WM_COMMAND: |
1086 | case WM_SYSCOMMAND: |
1087 | switch (wParam & ~0xF) { /* low 4 bits reserved to Windows */ |
1088 | case IDM_CLOSE: |
1089 | SendMessage(hwnd, WM_CLOSE, 0, 0); |
1090 | break; |
1091 | case IDM_VIEWKEYS: |
1092 | if (!keylist) { |
1093 | keylist = CreateDialog (instance, MAKEINTRESOURCE(211), |
1094 | NULL, KeyListProc); |
1095 | ShowWindow (keylist, SW_SHOWNORMAL); |
905beba5 |
1096 | /* |
1097 | * Sometimes the window comes up minimised / hidden |
1098 | * for no obvious reason. Prevent this. |
1099 | */ |
1100 | SetForegroundWindow(keylist); |
1101 | SetWindowPos (keylist, HWND_TOP, 0, 0, 0, 0, |
1102 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
5c58ad2d |
1103 | } |
1104 | break; |
ab162329 |
1105 | case IDM_ADDKEY: |
1106 | prompt_add_keyfile(); |
1107 | break; |
5af3a3b6 |
1108 | case IDM_ABOUT: |
1109 | if (!aboutbox) { |
1110 | aboutbox = CreateDialog (instance, MAKEINTRESOURCE(213), |
1111 | NULL, AboutProc); |
1112 | ShowWindow (aboutbox, SW_SHOWNORMAL); |
1113 | /* |
1114 | * Sometimes the window comes up minimised / hidden |
1115 | * for no obvious reason. Prevent this. |
1116 | */ |
1117 | SetForegroundWindow(aboutbox); |
1118 | SetWindowPos (aboutbox, HWND_TOP, 0, 0, 0, 0, |
1119 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
1120 | } |
1121 | break; |
5c58ad2d |
1122 | } |
1123 | break; |
1124 | case WM_DESTROY: |
1125 | PostQuitMessage (0); |
1126 | return 0; |
1127 | case WM_COPYDATA: |
1128 | { |
1129 | COPYDATASTRUCT *cds; |
d70f60ae |
1130 | char *mapname; |
1131 | void *p; |
1132 | HANDLE filemap, proc; |
1133 | PSID mapowner, procowner; |
1134 | PSECURITY_DESCRIPTOR psd1 = NULL, psd2 = NULL; |
1135 | int ret = 0; |
5c58ad2d |
1136 | |
1137 | cds = (COPYDATASTRUCT *)lParam; |
d70f60ae |
1138 | if (cds->dwData != AGENT_COPYDATA_ID) |
1139 | return 0; /* not our message, mate */ |
1140 | mapname = (char *)cds->lpData; |
1141 | if (mapname[cds->cbData - 1] != '\0') |
1142 | return 0; /* failure to be ASCIZ! */ |
1143 | #ifdef DEBUG_IPC |
1144 | debug(("mapname is :%s:\r\n", mapname)); |
1145 | #endif |
1146 | filemap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, mapname); |
1147 | #ifdef DEBUG_IPC |
1148 | debug(("filemap is %p\r\n", filemap)); |
1149 | #endif |
1150 | if (filemap != NULL && filemap != INVALID_HANDLE_VALUE) { |
1151 | int rc; |
123bc6ea |
1152 | #ifndef NO_SECURITY |
016ef8ab |
1153 | if (has_security) { |
1154 | if ((proc = OpenProcess(MAXIMUM_ALLOWED, FALSE, |
1155 | GetCurrentProcessId())) == NULL) { |
d70f60ae |
1156 | #ifdef DEBUG_IPC |
016ef8ab |
1157 | debug(("couldn't get handle for process\r\n")); |
d70f60ae |
1158 | #endif |
016ef8ab |
1159 | return 0; |
1160 | } |
1161 | if (getsecurityinfo(proc, SE_KERNEL_OBJECT, |
1162 | OWNER_SECURITY_INFORMATION, |
1163 | &procowner, NULL, NULL, NULL, |
1164 | &psd2) != ERROR_SUCCESS) { |
d70f60ae |
1165 | #ifdef DEBUG_IPC |
016ef8ab |
1166 | debug(("couldn't get owner info for process\r\n")); |
d70f60ae |
1167 | #endif |
016ef8ab |
1168 | CloseHandle(proc); |
1169 | return 0; /* unable to get security info */ |
1170 | } |
d70f60ae |
1171 | CloseHandle(proc); |
016ef8ab |
1172 | if ((rc = getsecurityinfo(filemap, SE_KERNEL_OBJECT, |
1173 | OWNER_SECURITY_INFORMATION, |
1174 | &mapowner, NULL, NULL, NULL, |
1175 | &psd1) != ERROR_SUCCESS)) { |
d70f60ae |
1176 | #ifdef DEBUG_IPC |
016ef8ab |
1177 | debug(("couldn't get owner info for filemap: %d\r\n", rc)); |
d70f60ae |
1178 | #endif |
016ef8ab |
1179 | return 0; |
1180 | } |
1181 | #ifdef DEBUG_IPC |
1182 | debug(("got security stuff\r\n")); |
1183 | #endif |
1184 | if (!EqualSid(mapowner, procowner)) |
1185 | return 0; /* security ID mismatch! */ |
d70f60ae |
1186 | #ifdef DEBUG_IPC |
016ef8ab |
1187 | debug(("security stuff matched\r\n")); |
d70f60ae |
1188 | #endif |
016ef8ab |
1189 | LocalFree(psd1); |
1190 | LocalFree(psd2); |
1191 | } else { |
d70f60ae |
1192 | #ifdef DEBUG_IPC |
016ef8ab |
1193 | debug(("security APIs not present\r\n")); |
d70f60ae |
1194 | #endif |
016ef8ab |
1195 | } |
123bc6ea |
1196 | #endif |
d70f60ae |
1197 | p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0); |
1198 | #ifdef DEBUG_IPC |
1199 | debug(("p is %p\r\n", p)); |
1200 | {int i; for(i=0;i<5;i++)debug(("p[%d]=%02x\r\n", i, ((unsigned char *)p)[i]));} |
1201 | #endif |
1202 | answer_msg(p); |
1203 | ret = 1; |
1204 | UnmapViewOfFile(p); |
1205 | } |
1206 | CloseHandle(filemap); |
1207 | return ret; |
5c58ad2d |
1208 | } |
5c58ad2d |
1209 | } |
1210 | |
1211 | return DefWindowProc (hwnd, message, wParam, lParam); |
1212 | } |
1213 | |
ddecd643 |
1214 | /* |
1215 | * Fork and Exec the command in cmdline. [DBW] |
1216 | */ |
1217 | void spawn_cmd(char *cmdline, int show) { |
1218 | if (ShellExecute(NULL, _T("open"), cmdline, |
1219 | NULL, NULL, show) <= (HINSTANCE) 32) { |
1220 | TCHAR sMsg[140]; |
1221 | sprintf(sMsg, _T("Failed to run \"%.100s\", Error: %d"), cmdline, |
1222 | GetLastError()); |
1223 | MessageBox(NULL, sMsg, APPNAME, MB_OK | MB_ICONEXCLAMATION); |
1224 | } |
1225 | } |
1226 | |
5c58ad2d |
1227 | int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) { |
1228 | WNDCLASS wndclass; |
5c58ad2d |
1229 | MSG msg; |
016ef8ab |
1230 | OSVERSIONINFO osi; |
1231 | HMODULE advapi; |
ddecd643 |
1232 | char *command = NULL; |
1233 | int added_keys = 0; |
016ef8ab |
1234 | |
1235 | /* |
1236 | * Determine whether we're an NT system (should have security |
1237 | * APIs) or a non-NT system (don't do security). |
1238 | */ |
1239 | memset(&osi, 0, sizeof(OSVERSIONINFO)); |
1240 | osi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); |
1241 | if (GetVersionEx(&osi) && osi.dwPlatformId==VER_PLATFORM_WIN32_NT) { |
1242 | has_security = TRUE; |
1243 | } else |
1244 | has_security = FALSE; |
1245 | |
1246 | if (has_security) { |
123bc6ea |
1247 | #ifndef NO_SECURITY |
016ef8ab |
1248 | /* |
ddecd643 |
1249 | * Attempt to get the security API we need. |
016ef8ab |
1250 | */ |
1251 | advapi = LoadLibrary("ADVAPI32.DLL"); |
1252 | getsecurityinfo = (gsi_fn_t)GetProcAddress(advapi, "GetSecurityInfo"); |
1253 | if (!getsecurityinfo) { |
1254 | MessageBox(NULL, |
1255 | "Unable to access security APIs. Pageant will\n" |
1256 | "not run, in case it causes a security breach.", |
1257 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
1258 | return 1; |
1259 | } |
123bc6ea |
1260 | #else |
1261 | MessageBox(NULL, |
1262 | "This program has been compiled for Win9X and will\n" |
1263 | "not run on NT, in case it causes a security breach.", |
1264 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
1265 | return 1; |
1266 | #endif |
016ef8ab |
1267 | } else |
1268 | advapi = NULL; |
5c58ad2d |
1269 | |
1270 | instance = inst; |
1271 | |
ddecd643 |
1272 | /* |
1273 | * Find out if Pageant is already running. |
1274 | */ |
1275 | already_running = FALSE; |
1276 | if (FindWindow("Pageant", "Pageant")) |
1277 | already_running = TRUE; |
1278 | else { |
1279 | |
1280 | if (!prev) { |
1281 | wndclass.style = 0; |
1282 | wndclass.lpfnWndProc = WndProc; |
1283 | wndclass.cbClsExtra = 0; |
1284 | wndclass.cbWndExtra = 0; |
1285 | wndclass.hInstance = inst; |
1286 | wndclass.hIcon = LoadIcon (inst, |
1287 | MAKEINTRESOURCE(IDI_MAINICON)); |
1288 | wndclass.hCursor = LoadCursor (NULL, IDC_IBEAM); |
1289 | wndclass.hbrBackground = GetStockObject (BLACK_BRUSH); |
1290 | wndclass.lpszMenuName = NULL; |
1291 | wndclass.lpszClassName = APPNAME; |
1292 | |
1293 | RegisterClass (&wndclass); |
1294 | } |
5c58ad2d |
1295 | |
ddecd643 |
1296 | hwnd = keylist = NULL; |
5c58ad2d |
1297 | |
ddecd643 |
1298 | hwnd = CreateWindow (APPNAME, APPNAME, |
1299 | WS_OVERLAPPEDWINDOW | WS_VSCROLL, |
1300 | CW_USEDEFAULT, CW_USEDEFAULT, |
1301 | 100, 100, NULL, NULL, inst, NULL); |
5c58ad2d |
1302 | |
ddecd643 |
1303 | /* Set up a system tray icon */ |
1304 | { |
1305 | BOOL res; |
1306 | NOTIFYICONDATA tnid; |
1307 | HICON hicon; |
5c58ad2d |
1308 | |
1309 | #ifdef NIM_SETVERSION |
ddecd643 |
1310 | tnid.uVersion = 0; |
1311 | res = Shell_NotifyIcon(NIM_SETVERSION, &tnid); |
5c58ad2d |
1312 | #endif |
1313 | |
ddecd643 |
1314 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
1315 | tnid.hWnd = hwnd; |
1316 | tnid.uID = 1; /* unique within this systray use */ |
1317 | tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; |
1318 | tnid.uCallbackMessage = WM_SYSTRAY; |
1319 | tnid.hIcon = hicon = LoadIcon (instance, MAKEINTRESOURCE(201)); |
1320 | strcpy(tnid.szTip, "Pageant (PuTTY authentication agent)"); |
1321 | |
1322 | res = Shell_NotifyIcon(NIM_ADD, &tnid); |
1323 | |
1324 | if (hicon) |
1325 | DestroyIcon(hicon); |
1326 | |
1327 | systray_menu = CreatePopupMenu(); |
1328 | /* accelerators used: vkxa */ |
1329 | AppendMenu (systray_menu, MF_ENABLED, IDM_VIEWKEYS, "&View Keys"); |
1330 | AppendMenu (systray_menu, MF_ENABLED, IDM_ADDKEY, "Add &Key"); |
1331 | AppendMenu (systray_menu, MF_ENABLED, IDM_ABOUT, "&About"); |
1332 | AppendMenu (systray_menu, MF_ENABLED, IDM_CLOSE, "E&xit"); |
1333 | } |
5c58ad2d |
1334 | |
ddecd643 |
1335 | ShowWindow (hwnd, SW_HIDE); |
5c58ad2d |
1336 | |
ddecd643 |
1337 | /* |
1338 | * Initialise storage for RSA keys. |
1339 | */ |
1340 | rsakeys = newtree234(cmpkeys_rsa); |
1341 | ssh2keys = newtree234(cmpkeys_ssh2); |
1342 | |
1343 | } |
dacbd0e8 |
1344 | |
1345 | /* |
45cebe79 |
1346 | * Process the command line and add keys as listed on it. |
ddecd643 |
1347 | * If we already determined that we need to spawn a program from above we |
1348 | * need to ignore the first two arguments. [DBW] |
5c58ad2d |
1349 | */ |
1350 | { |
8c42f28c |
1351 | char *p; |
1352 | int inquotes = 0; |
ddecd643 |
1353 | int ignorearg = 0; |
8c42f28c |
1354 | p = cmdline; |
dacbd0e8 |
1355 | while (*p) { |
1356 | while (*p && isspace(*p)) p++; |
1357 | if (*p && !isspace(*p)) { |
8c42f28c |
1358 | char *q = p, *pp = p; |
1359 | while (*p && (inquotes || !isspace(*p))) |
1360 | { |
1361 | if (*p == '"') { |
1362 | inquotes = !inquotes; |
1363 | p++; |
1364 | continue; |
1365 | } |
1366 | *pp++ = *p++; |
1367 | } |
1368 | if (*pp) { |
1369 | if (*p) p++; |
1370 | *pp++ = '\0'; |
1371 | } |
ddecd643 |
1372 | if (!strcmp(q, "-c")) { |
1373 | /* |
1374 | * If we see `-c', then the rest of the |
1375 | * command line should be treated as a |
1376 | * command to be spawned. |
1377 | */ |
1378 | while (*p && isspace(*p)) p++; |
1379 | command = p; |
1380 | break; |
1381 | } else { |
1382 | add_keyfile(q); |
1383 | added_keys = TRUE; |
1384 | } |
dacbd0e8 |
1385 | } |
1386 | } |
5c58ad2d |
1387 | } |
1388 | |
ddecd643 |
1389 | if (command) spawn_cmd (command, show); |
1390 | |
1391 | /* |
1392 | * If Pageant was already running, we leave now. If we haven't |
1393 | * even taken any auxiliary action (spawned a command or added |
1394 | * keys), complain. |
1395 | */ |
1396 | if (already_running) { |
1397 | if (!command && !added_keys) { |
1398 | MessageBox(NULL, "Pageant is already running", "Pageant Error", |
1399 | MB_ICONERROR | MB_OK); |
1400 | } |
1401 | if (advapi) FreeLibrary(advapi); |
1402 | return 0; |
1403 | } |
1404 | |
5c58ad2d |
1405 | /* |
dacbd0e8 |
1406 | * Main message loop. |
5c58ad2d |
1407 | */ |
5c58ad2d |
1408 | while (GetMessage(&msg, NULL, 0, 0) == 1) { |
1409 | TranslateMessage(&msg); |
1410 | DispatchMessage(&msg); |
1411 | } |
1412 | |
1413 | /* Clean up the system tray icon */ |
1414 | { |
1415 | NOTIFYICONDATA tnid; |
1416 | |
1417 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
1418 | tnid.hWnd = hwnd; |
1419 | tnid.uID = 1; |
1420 | |
1421 | Shell_NotifyIcon(NIM_DELETE, &tnid); |
1422 | |
1423 | DestroyMenu(systray_menu); |
1424 | } |
1425 | |
016ef8ab |
1426 | if (advapi) FreeLibrary(advapi); |
5c58ad2d |
1427 | exit(msg.wParam); |
1428 | } |