| 1 | /* |
| 2 | * Pageant: the PuTTY Authentication Agent. |
| 3 | */ |
| 4 | |
| 5 | #include <windows.h> |
| 6 | #include <aclapi.h> |
| 7 | #include <stdio.h> /* FIXME */ |
| 8 | #include "putty.h" /* FIXME */ |
| 9 | #include "ssh.h" |
| 10 | #include "tree234.h" |
| 11 | |
| 12 | #define IDI_MAINICON 200 |
| 13 | #define IDI_TRAYICON 201 |
| 14 | |
| 15 | #define WM_XUSER (WM_USER + 0x2000) |
| 16 | #define WM_SYSTRAY (WM_XUSER + 6) |
| 17 | #define WM_SYSTRAY2 (WM_XUSER + 7) |
| 18 | |
| 19 | #define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ |
| 20 | |
| 21 | /* |
| 22 | * FIXME: maybe some day we can sort this out ... |
| 23 | */ |
| 24 | #define AGENT_MAX_MSGLEN 8192 |
| 25 | |
| 26 | #define IDM_CLOSE 0x0010 |
| 27 | #define IDM_VIEWKEYS 0x0020 |
| 28 | |
| 29 | #define APPNAME "Pageant" |
| 30 | |
| 31 | #define SSH_AGENTC_REQUEST_RSA_IDENTITIES 1 |
| 32 | #define SSH_AGENT_RSA_IDENTITIES_ANSWER 2 |
| 33 | #define SSH_AGENTC_RSA_CHALLENGE 3 |
| 34 | #define SSH_AGENT_RSA_RESPONSE 4 |
| 35 | #define SSH_AGENT_FAILURE 5 |
| 36 | #define SSH_AGENT_SUCCESS 6 |
| 37 | #define SSH_AGENTC_ADD_RSA_IDENTITY 7 |
| 38 | #define SSH_AGENTC_REMOVE_RSA_IDENTITY 8 |
| 39 | |
| 40 | HINSTANCE instance; |
| 41 | HWND hwnd; |
| 42 | HWND keylist; |
| 43 | HMENU systray_menu; |
| 44 | |
| 45 | tree234 *rsakeys; |
| 46 | |
| 47 | int has_security; |
| 48 | typedef DWORD (WINAPI *gsi_fn_t) |
| 49 | (HANDLE, SE_OBJECT_TYPE, SECURITY_INFORMATION, |
| 50 | PSID *, PSID *, PACL *, PACL *, |
| 51 | PSECURITY_DESCRIPTOR *); |
| 52 | gsi_fn_t getsecurityinfo; |
| 53 | |
| 54 | /* |
| 55 | * We need this to link with the RSA code, because rsaencrypt() |
| 56 | * pads its data with random bytes. Since we only use rsadecrypt(), |
| 57 | * which is deterministic, this should never be called. |
| 58 | * |
| 59 | * If it _is_ called, there is a _serious_ problem, because it |
| 60 | * won't generate true random numbers. So we must scream, panic, |
| 61 | * and exit immediately if that should happen. |
| 62 | */ |
| 63 | int random_byte(void) { |
| 64 | MessageBox(hwnd, "Internal Error", APPNAME, MB_OK | MB_ICONERROR); |
| 65 | exit(0); |
| 66 | } |
| 67 | |
| 68 | /* |
| 69 | * This function is needed to link with the DES code. We need not |
| 70 | * have it do anything at all. |
| 71 | */ |
| 72 | void logevent(char *msg) { |
| 73 | } |
| 74 | |
| 75 | #define GET_32BIT(cp) \ |
| 76 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
| 77 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
| 78 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
| 79 | ((unsigned long)(unsigned char)(cp)[3])) |
| 80 | |
| 81 | #define PUT_32BIT(cp, value) { \ |
| 82 | (cp)[0] = (unsigned char)((value) >> 24); \ |
| 83 | (cp)[1] = (unsigned char)((value) >> 16); \ |
| 84 | (cp)[2] = (unsigned char)((value) >> 8); \ |
| 85 | (cp)[3] = (unsigned char)(value); } |
| 86 | |
| 87 | #define PASSPHRASE_MAXLEN 512 |
| 88 | |
| 89 | /* |
| 90 | * Dialog-box function for the passphrase box. |
| 91 | */ |
| 92 | static int CALLBACK PassphraseProc(HWND hwnd, UINT msg, |
| 93 | WPARAM wParam, LPARAM lParam) { |
| 94 | static char *passphrase; |
| 95 | |
| 96 | switch (msg) { |
| 97 | case WM_INITDIALOG: |
| 98 | passphrase = (char *)lParam; |
| 99 | *passphrase = 0; |
| 100 | return 0; |
| 101 | case WM_COMMAND: |
| 102 | switch (LOWORD(wParam)) { |
| 103 | case IDOK: |
| 104 | if (*passphrase) |
| 105 | EndDialog (hwnd, 1); |
| 106 | else |
| 107 | MessageBeep (0); |
| 108 | return 0; |
| 109 | case IDCANCEL: |
| 110 | EndDialog (hwnd, 0); |
| 111 | return 0; |
| 112 | case 102: /* edit box */ |
| 113 | if (HIWORD(wParam) == EN_CHANGE) { |
| 114 | GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1); |
| 115 | passphrase[PASSPHRASE_MAXLEN-1] = '\0'; |
| 116 | } |
| 117 | return 0; |
| 118 | } |
| 119 | return 0; |
| 120 | case WM_CLOSE: |
| 121 | EndDialog (hwnd, 0); |
| 122 | return 0; |
| 123 | } |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * This function loads a key from a file and adds it. |
| 129 | */ |
| 130 | void add_keyfile(char *filename) { |
| 131 | char passphrase[PASSPHRASE_MAXLEN]; |
| 132 | struct RSAKey *key; |
| 133 | int needs_pass; |
| 134 | int ret; |
| 135 | int attempts; |
| 136 | |
| 137 | /* FIXME: we can acquire comment here and use it in dialog */ |
| 138 | needs_pass = rsakey_encrypted(filename, NULL); |
| 139 | attempts = 0; |
| 140 | key = malloc(sizeof(*key)); |
| 141 | do { |
| 142 | if (needs_pass) { |
| 143 | int dlgret; |
| 144 | dlgret = DialogBoxParam(instance, MAKEINTRESOURCE(210), |
| 145 | NULL, PassphraseProc, |
| 146 | (LPARAM)passphrase); |
| 147 | if (!dlgret) { |
| 148 | free(key); |
| 149 | return; /* operation cancelled */ |
| 150 | } |
| 151 | } else |
| 152 | *passphrase = '\0'; |
| 153 | ret = loadrsakey(filename, key, passphrase); |
| 154 | attempts++; |
| 155 | } while (ret == -1); |
| 156 | if (ret == 0) { |
| 157 | MessageBox(NULL, "Couldn't load public key.", APPNAME, |
| 158 | MB_OK | MB_ICONERROR); |
| 159 | free(key); |
| 160 | return; |
| 161 | } |
| 162 | if (add234(rsakeys, key) != key) |
| 163 | free(key); /* already present, don't waste RAM */ |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | * This is the main agent function that answers messages. |
| 168 | */ |
| 169 | void answer_msg(void *msg) { |
| 170 | unsigned char *p = msg; |
| 171 | unsigned char *ret = msg; |
| 172 | int type; |
| 173 | |
| 174 | /* |
| 175 | * Get the message type. |
| 176 | */ |
| 177 | type = p[4]; |
| 178 | |
| 179 | p += 5; |
| 180 | switch (type) { |
| 181 | case SSH_AGENTC_REQUEST_RSA_IDENTITIES: |
| 182 | /* |
| 183 | * Reply with SSH_AGENT_RSA_IDENTITIES_ANSWER. |
| 184 | */ |
| 185 | { |
| 186 | enum234 e; |
| 187 | struct RSAKey *key; |
| 188 | int len, nkeys; |
| 189 | |
| 190 | /* |
| 191 | * Count up the number and length of keys we hold. |
| 192 | */ |
| 193 | len = nkeys = 0; |
| 194 | for (key = first234(rsakeys, &e); key; key = next234(&e)) { |
| 195 | nkeys++; |
| 196 | len += 4; /* length field */ |
| 197 | len += ssh1_bignum_length(key->exponent); |
| 198 | len += ssh1_bignum_length(key->modulus); |
| 199 | len += 4 + strlen(key->comment); |
| 200 | } |
| 201 | |
| 202 | /* |
| 203 | * Packet header is the obvious five bytes, plus four |
| 204 | * bytes for the key count. |
| 205 | */ |
| 206 | len += 5 + 4; |
| 207 | if (len > AGENT_MAX_MSGLEN) |
| 208 | goto failure; /* aaargh! too much stuff! */ |
| 209 | PUT_32BIT(ret, len-4); |
| 210 | ret[4] = SSH_AGENT_RSA_IDENTITIES_ANSWER; |
| 211 | PUT_32BIT(ret+5, nkeys); |
| 212 | p = ret + 5 + 4; |
| 213 | for (key = first234(rsakeys, &e); key; key = next234(&e)) { |
| 214 | PUT_32BIT(p, ssh1_bignum_bitcount(key->modulus)); |
| 215 | p += 4; |
| 216 | p += ssh1_write_bignum(p, key->exponent); |
| 217 | p += ssh1_write_bignum(p, key->modulus); |
| 218 | PUT_32BIT(p, strlen(key->comment)); |
| 219 | memcpy(p+4, key->comment, strlen(key->comment)); |
| 220 | p += 4 + strlen(key->comment); |
| 221 | } |
| 222 | } |
| 223 | break; |
| 224 | case SSH_AGENTC_RSA_CHALLENGE: |
| 225 | /* |
| 226 | * Reply with either SSH_AGENT_RSA_RESPONSE or |
| 227 | * SSH_AGENT_FAILURE, depending on whether we have that key |
| 228 | * or not. |
| 229 | */ |
| 230 | { |
| 231 | struct RSAKey reqkey, *key; |
| 232 | Bignum challenge, response; |
| 233 | unsigned char response_source[48], response_md5[16]; |
| 234 | struct MD5Context md5c; |
| 235 | int i, len; |
| 236 | |
| 237 | p += 4; |
| 238 | p += ssh1_read_bignum(p, &reqkey.exponent); |
| 239 | p += ssh1_read_bignum(p, &reqkey.modulus); |
| 240 | p += ssh1_read_bignum(p, &challenge); |
| 241 | memcpy(response_source+32, p, 16); p += 16; |
| 242 | if (GET_32BIT(p) != 1 || |
| 243 | (key = find234(rsakeys, &reqkey, NULL)) == NULL) { |
| 244 | freebn(reqkey.exponent); |
| 245 | freebn(reqkey.modulus); |
| 246 | freebn(challenge); |
| 247 | goto failure; |
| 248 | } |
| 249 | response = rsadecrypt(challenge, key); |
| 250 | for (i = 0; i < 32; i++) |
| 251 | response_source[i] = bignum_byte(response, 31-i); |
| 252 | |
| 253 | MD5Init(&md5c); |
| 254 | MD5Update(&md5c, response_source, 48); |
| 255 | MD5Final(response_md5, &md5c); |
| 256 | memset(response_source, 0, 48); /* burn the evidence */ |
| 257 | freebn(response); /* and that evidence */ |
| 258 | freebn(challenge); /* yes, and that evidence */ |
| 259 | freebn(reqkey.exponent); /* and free some memory ... */ |
| 260 | freebn(reqkey.modulus); /* ... while we're at it. */ |
| 261 | |
| 262 | /* |
| 263 | * Packet is the obvious five byte header, plus sixteen |
| 264 | * bytes of MD5. |
| 265 | */ |
| 266 | len = 5 + 16; |
| 267 | PUT_32BIT(ret, len-4); |
| 268 | ret[4] = SSH_AGENT_RSA_RESPONSE; |
| 269 | memcpy(ret+5, response_md5, 16); |
| 270 | } |
| 271 | break; |
| 272 | #if 0 /* FIXME: implement these */ |
| 273 | case SSH_AGENTC_ADD_RSA_IDENTITY: |
| 274 | /* |
| 275 | * Add to the list and return SSH_AGENT_SUCCESS, or |
| 276 | * SSH_AGENT_FAILURE if the key was malformed. |
| 277 | */ |
| 278 | break; |
| 279 | case SSH_AGENTC_REMOVE_RSA_IDENTITY: |
| 280 | /* |
| 281 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
| 282 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
| 283 | * start with. |
| 284 | */ |
| 285 | break; |
| 286 | #endif |
| 287 | default: |
| 288 | failure: |
| 289 | /* |
| 290 | * Unrecognised message. Return SSH_AGENT_FAILURE. |
| 291 | */ |
| 292 | PUT_32BIT(ret, 1); |
| 293 | ret[4] = SSH_AGENT_FAILURE; |
| 294 | break; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | /* |
| 299 | * Key comparison function for the 2-3-4 tree of RSA keys. |
| 300 | */ |
| 301 | int cmpkeys(void *av, void *bv) { |
| 302 | struct RSAKey *a = (struct RSAKey *)av; |
| 303 | struct RSAKey *b = (struct RSAKey *)bv; |
| 304 | Bignum am, bm; |
| 305 | int alen, blen; |
| 306 | |
| 307 | am = a->modulus; |
| 308 | bm = b->modulus; |
| 309 | /* |
| 310 | * Compare by length of moduli. |
| 311 | */ |
| 312 | alen = ssh1_bignum_bitcount(am); |
| 313 | blen = ssh1_bignum_bitcount(bm); |
| 314 | if (alen > blen) return +1; else if (alen < blen) return -1; |
| 315 | /* |
| 316 | * Now compare by moduli themselves. |
| 317 | */ |
| 318 | alen = (alen + 7) / 8; /* byte count */ |
| 319 | while (alen-- > 0) { |
| 320 | int abyte, bbyte; |
| 321 | abyte = bignum_byte(am, alen); |
| 322 | bbyte = bignum_byte(bm, alen); |
| 323 | if (abyte > bbyte) return +1; else if (abyte < bbyte) return -1; |
| 324 | } |
| 325 | /* |
| 326 | * Give up. |
| 327 | */ |
| 328 | return 0; |
| 329 | } |
| 330 | |
| 331 | static void error(char *s) { |
| 332 | MessageBox(hwnd, s, APPNAME, MB_OK | MB_ICONERROR); |
| 333 | } |
| 334 | |
| 335 | /* |
| 336 | * Dialog-box function for the key list box. |
| 337 | */ |
| 338 | static int CALLBACK KeyListProc(HWND hwnd, UINT msg, |
| 339 | WPARAM wParam, LPARAM lParam) { |
| 340 | enum234 e; |
| 341 | struct RSAKey *key; |
| 342 | OPENFILENAME of; |
| 343 | char filename[FILENAME_MAX]; |
| 344 | |
| 345 | switch (msg) { |
| 346 | case WM_INITDIALOG: |
| 347 | for (key = first234(rsakeys, &e); key; key = next234(&e)) { |
| 348 | SendDlgItemMessage (hwnd, 100, LB_ADDSTRING, |
| 349 | 0, (LPARAM) key->comment); |
| 350 | } |
| 351 | return 0; |
| 352 | case WM_COMMAND: |
| 353 | switch (LOWORD(wParam)) { |
| 354 | case IDOK: |
| 355 | case IDCANCEL: |
| 356 | keylist = NULL; |
| 357 | DestroyWindow(hwnd); |
| 358 | return 0; |
| 359 | case 101: /* add key */ |
| 360 | if (HIWORD(wParam) == BN_CLICKED || |
| 361 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
| 362 | memset(&of, 0, sizeof(of)); |
| 363 | #ifdef OPENFILENAME_SIZE_VERSION_400 |
| 364 | of.lStructSize = OPENFILENAME_SIZE_VERSION_400; |
| 365 | #else |
| 366 | of.lStructSize = sizeof(of); |
| 367 | #endif |
| 368 | of.hwndOwner = hwnd; |
| 369 | of.lpstrFilter = "All Files\0*\0\0\0"; |
| 370 | of.lpstrCustomFilter = NULL; |
| 371 | of.nFilterIndex = 1; |
| 372 | of.lpstrFile = filename; *filename = '\0'; |
| 373 | of.nMaxFile = sizeof(filename); |
| 374 | of.lpstrFileTitle = NULL; |
| 375 | of.lpstrInitialDir = NULL; |
| 376 | of.lpstrTitle = "Select Public Key File"; |
| 377 | of.Flags = 0; |
| 378 | if (GetOpenFileName(&of)) { |
| 379 | add_keyfile(filename); |
| 380 | } |
| 381 | SendDlgItemMessage(hwnd, 100, LB_RESETCONTENT, 0, 0); |
| 382 | for (key = first234(rsakeys, &e); key; key = next234(&e)) { |
| 383 | SendDlgItemMessage (hwnd, 100, LB_ADDSTRING, |
| 384 | 0, (LPARAM) key->comment); |
| 385 | } |
| 386 | SendDlgItemMessage (hwnd, 100, LB_SETCURSEL, (WPARAM) -1, 0); |
| 387 | } |
| 388 | return 0; |
| 389 | case 102: /* remove key */ |
| 390 | if (HIWORD(wParam) == BN_CLICKED || |
| 391 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
| 392 | int n = SendDlgItemMessage (hwnd, 100, LB_GETCURSEL, 0, 0); |
| 393 | if (n == LB_ERR || n == 0) { |
| 394 | MessageBeep(0); |
| 395 | break; |
| 396 | } |
| 397 | for (key = first234(rsakeys, &e); key; key = next234(&e)) |
| 398 | if (n-- == 0) |
| 399 | break; |
| 400 | del234(rsakeys, key); |
| 401 | freersakey(key); free(key); |
| 402 | SendDlgItemMessage(hwnd, 100, LB_RESETCONTENT, 0, 0); |
| 403 | for (key = first234(rsakeys, &e); key; key = next234(&e)) { |
| 404 | SendDlgItemMessage (hwnd, 100, LB_ADDSTRING, |
| 405 | 0, (LPARAM) key->comment); |
| 406 | } |
| 407 | SendDlgItemMessage (hwnd, 100, LB_SETCURSEL, (WPARAM) -1, 0); |
| 408 | } |
| 409 | return 0; |
| 410 | } |
| 411 | return 0; |
| 412 | case WM_CLOSE: |
| 413 | keylist = NULL; |
| 414 | DestroyWindow(hwnd); |
| 415 | return 0; |
| 416 | } |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | static LRESULT CALLBACK WndProc (HWND hwnd, UINT message, |
| 421 | WPARAM wParam, LPARAM lParam) { |
| 422 | int ret; |
| 423 | static int menuinprogress; |
| 424 | |
| 425 | switch (message) { |
| 426 | case WM_SYSTRAY: |
| 427 | if (lParam == WM_RBUTTONUP) { |
| 428 | POINT cursorpos; |
| 429 | GetCursorPos(&cursorpos); |
| 430 | PostMessage(hwnd, WM_SYSTRAY2, cursorpos.x, cursorpos.y); |
| 431 | } else if (lParam == WM_LBUTTONDBLCLK) { |
| 432 | /* Equivalent to IDM_VIEWKEYS. */ |
| 433 | PostMessage(hwnd, WM_COMMAND, IDM_VIEWKEYS, 0); |
| 434 | } |
| 435 | break; |
| 436 | case WM_SYSTRAY2: |
| 437 | if (!menuinprogress) { |
| 438 | menuinprogress = 1; |
| 439 | SetForegroundWindow(hwnd); |
| 440 | ret = TrackPopupMenu(systray_menu, |
| 441 | TPM_RIGHTALIGN | TPM_BOTTOMALIGN | |
| 442 | TPM_RIGHTBUTTON, |
| 443 | wParam, lParam, 0, hwnd, NULL); |
| 444 | menuinprogress = 0; |
| 445 | } |
| 446 | break; |
| 447 | case WM_COMMAND: |
| 448 | case WM_SYSCOMMAND: |
| 449 | switch (wParam & ~0xF) { /* low 4 bits reserved to Windows */ |
| 450 | case IDM_CLOSE: |
| 451 | SendMessage(hwnd, WM_CLOSE, 0, 0); |
| 452 | break; |
| 453 | case IDM_VIEWKEYS: |
| 454 | if (!keylist) { |
| 455 | keylist = CreateDialog (instance, MAKEINTRESOURCE(211), |
| 456 | NULL, KeyListProc); |
| 457 | ShowWindow (keylist, SW_SHOWNORMAL); |
| 458 | /* |
| 459 | * Sometimes the window comes up minimised / hidden |
| 460 | * for no obvious reason. Prevent this. |
| 461 | */ |
| 462 | SetForegroundWindow(keylist); |
| 463 | SetWindowPos (keylist, HWND_TOP, 0, 0, 0, 0, |
| 464 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
| 465 | } |
| 466 | break; |
| 467 | } |
| 468 | break; |
| 469 | case WM_DESTROY: |
| 470 | PostQuitMessage (0); |
| 471 | return 0; |
| 472 | case WM_COPYDATA: |
| 473 | { |
| 474 | COPYDATASTRUCT *cds; |
| 475 | char *mapname; |
| 476 | void *p; |
| 477 | HANDLE filemap, proc; |
| 478 | PSID mapowner, procowner; |
| 479 | PSECURITY_DESCRIPTOR psd1 = NULL, psd2 = NULL; |
| 480 | int ret = 0; |
| 481 | |
| 482 | cds = (COPYDATASTRUCT *)lParam; |
| 483 | if (cds->dwData != AGENT_COPYDATA_ID) |
| 484 | return 0; /* not our message, mate */ |
| 485 | mapname = (char *)cds->lpData; |
| 486 | if (mapname[cds->cbData - 1] != '\0') |
| 487 | return 0; /* failure to be ASCIZ! */ |
| 488 | #ifdef DEBUG_IPC |
| 489 | debug(("mapname is :%s:\r\n", mapname)); |
| 490 | #endif |
| 491 | filemap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, mapname); |
| 492 | #ifdef DEBUG_IPC |
| 493 | debug(("filemap is %p\r\n", filemap)); |
| 494 | #endif |
| 495 | if (filemap != NULL && filemap != INVALID_HANDLE_VALUE) { |
| 496 | int rc; |
| 497 | if (has_security) { |
| 498 | if ((proc = OpenProcess(MAXIMUM_ALLOWED, FALSE, |
| 499 | GetCurrentProcessId())) == NULL) { |
| 500 | #ifdef DEBUG_IPC |
| 501 | debug(("couldn't get handle for process\r\n")); |
| 502 | #endif |
| 503 | return 0; |
| 504 | } |
| 505 | if (getsecurityinfo(proc, SE_KERNEL_OBJECT, |
| 506 | OWNER_SECURITY_INFORMATION, |
| 507 | &procowner, NULL, NULL, NULL, |
| 508 | &psd2) != ERROR_SUCCESS) { |
| 509 | #ifdef DEBUG_IPC |
| 510 | debug(("couldn't get owner info for process\r\n")); |
| 511 | #endif |
| 512 | CloseHandle(proc); |
| 513 | return 0; /* unable to get security info */ |
| 514 | } |
| 515 | CloseHandle(proc); |
| 516 | if ((rc = getsecurityinfo(filemap, SE_KERNEL_OBJECT, |
| 517 | OWNER_SECURITY_INFORMATION, |
| 518 | &mapowner, NULL, NULL, NULL, |
| 519 | &psd1) != ERROR_SUCCESS)) { |
| 520 | #ifdef DEBUG_IPC |
| 521 | debug(("couldn't get owner info for filemap: %d\r\n", rc)); |
| 522 | #endif |
| 523 | return 0; |
| 524 | } |
| 525 | #ifdef DEBUG_IPC |
| 526 | debug(("got security stuff\r\n")); |
| 527 | #endif |
| 528 | if (!EqualSid(mapowner, procowner)) |
| 529 | return 0; /* security ID mismatch! */ |
| 530 | #ifdef DEBUG_IPC |
| 531 | debug(("security stuff matched\r\n")); |
| 532 | #endif |
| 533 | LocalFree(psd1); |
| 534 | LocalFree(psd2); |
| 535 | } else { |
| 536 | #ifdef DEBUG_IPC |
| 537 | debug(("security APIs not present\r\n")); |
| 538 | #endif |
| 539 | } |
| 540 | p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0); |
| 541 | #ifdef DEBUG_IPC |
| 542 | debug(("p is %p\r\n", p)); |
| 543 | {int i; for(i=0;i<5;i++)debug(("p[%d]=%02x\r\n", i, ((unsigned char *)p)[i]));} |
| 544 | #endif |
| 545 | answer_msg(p); |
| 546 | ret = 1; |
| 547 | UnmapViewOfFile(p); |
| 548 | } |
| 549 | CloseHandle(filemap); |
| 550 | return ret; |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | return DefWindowProc (hwnd, message, wParam, lParam); |
| 555 | } |
| 556 | |
| 557 | int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) { |
| 558 | WNDCLASS wndclass; |
| 559 | MSG msg; |
| 560 | OSVERSIONINFO osi; |
| 561 | HMODULE advapi; |
| 562 | |
| 563 | /* |
| 564 | * Determine whether we're an NT system (should have security |
| 565 | * APIs) or a non-NT system (don't do security). |
| 566 | */ |
| 567 | memset(&osi, 0, sizeof(OSVERSIONINFO)); |
| 568 | osi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); |
| 569 | if (GetVersionEx(&osi) && osi.dwPlatformId==VER_PLATFORM_WIN32_NT) { |
| 570 | has_security = TRUE; |
| 571 | } else |
| 572 | has_security = FALSE; |
| 573 | |
| 574 | if (has_security) { |
| 575 | /* |
| 576 | * Attempt to ge the security API we need. |
| 577 | */ |
| 578 | advapi = LoadLibrary("ADVAPI32.DLL"); |
| 579 | getsecurityinfo = (gsi_fn_t)GetProcAddress(advapi, "GetSecurityInfo"); |
| 580 | if (!getsecurityinfo) { |
| 581 | MessageBox(NULL, |
| 582 | "Unable to access security APIs. Pageant will\n" |
| 583 | "not run, in case it causes a security breach.", |
| 584 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
| 585 | return 1; |
| 586 | } |
| 587 | } else |
| 588 | advapi = NULL; |
| 589 | |
| 590 | /* |
| 591 | * First bomb out totally if we are already running. |
| 592 | */ |
| 593 | if (FindWindow("Pageant", "Pageant")) { |
| 594 | MessageBox(NULL, "Pageant is already running", "Pageant Error", |
| 595 | MB_ICONERROR | MB_OK); |
| 596 | if (advapi) FreeLibrary(advapi); |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | instance = inst; |
| 601 | |
| 602 | if (!prev) { |
| 603 | wndclass.style = 0; |
| 604 | wndclass.lpfnWndProc = WndProc; |
| 605 | wndclass.cbClsExtra = 0; |
| 606 | wndclass.cbWndExtra = 0; |
| 607 | wndclass.hInstance = inst; |
| 608 | wndclass.hIcon = LoadIcon (inst, |
| 609 | MAKEINTRESOURCE(IDI_MAINICON)); |
| 610 | wndclass.hCursor = LoadCursor (NULL, IDC_IBEAM); |
| 611 | wndclass.hbrBackground = GetStockObject (BLACK_BRUSH); |
| 612 | wndclass.lpszMenuName = NULL; |
| 613 | wndclass.lpszClassName = APPNAME; |
| 614 | |
| 615 | RegisterClass (&wndclass); |
| 616 | } |
| 617 | |
| 618 | hwnd = keylist = NULL; |
| 619 | |
| 620 | hwnd = CreateWindow (APPNAME, APPNAME, |
| 621 | WS_OVERLAPPEDWINDOW | WS_VSCROLL, |
| 622 | CW_USEDEFAULT, CW_USEDEFAULT, |
| 623 | 100, 100, NULL, NULL, inst, NULL); |
| 624 | |
| 625 | /* Set up a system tray icon */ |
| 626 | { |
| 627 | BOOL res; |
| 628 | NOTIFYICONDATA tnid; |
| 629 | HICON hicon; |
| 630 | |
| 631 | #ifdef NIM_SETVERSION |
| 632 | tnid.uVersion = 0; |
| 633 | res = Shell_NotifyIcon(NIM_SETVERSION, &tnid); |
| 634 | #endif |
| 635 | |
| 636 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
| 637 | tnid.hWnd = hwnd; |
| 638 | tnid.uID = 1; /* unique within this systray use */ |
| 639 | tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; |
| 640 | tnid.uCallbackMessage = WM_SYSTRAY; |
| 641 | tnid.hIcon = hicon = LoadIcon (instance, MAKEINTRESOURCE(201)); |
| 642 | strcpy(tnid.szTip, "Pageant (PuTTY authentication agent)"); |
| 643 | |
| 644 | res = Shell_NotifyIcon(NIM_ADD, &tnid); |
| 645 | |
| 646 | if (hicon) |
| 647 | DestroyIcon(hicon); |
| 648 | |
| 649 | systray_menu = CreatePopupMenu(); |
| 650 | AppendMenu (systray_menu, MF_ENABLED, IDM_VIEWKEYS, "&View Keys"); |
| 651 | AppendMenu (systray_menu, MF_ENABLED, IDM_CLOSE, "E&xit"); |
| 652 | } |
| 653 | |
| 654 | ShowWindow (hwnd, SW_HIDE); |
| 655 | |
| 656 | /* |
| 657 | * Initialise storage for RSA keys. |
| 658 | */ |
| 659 | rsakeys = newtree234(cmpkeys); |
| 660 | |
| 661 | /* |
| 662 | * Process the command line and add RSA keys as listed on it. |
| 663 | */ |
| 664 | { |
| 665 | char *p; |
| 666 | int inquotes = 0; |
| 667 | p = cmdline; |
| 668 | while (*p) { |
| 669 | while (*p && isspace(*p)) p++; |
| 670 | if (*p && !isspace(*p)) { |
| 671 | char *q = p, *pp = p; |
| 672 | while (*p && (inquotes || !isspace(*p))) |
| 673 | { |
| 674 | if (*p == '"') { |
| 675 | inquotes = !inquotes; |
| 676 | p++; |
| 677 | continue; |
| 678 | } |
| 679 | *pp++ = *p++; |
| 680 | } |
| 681 | if (*pp) { |
| 682 | if (*p) p++; |
| 683 | *pp++ = '\0'; |
| 684 | } |
| 685 | add_keyfile(q); |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | /* |
| 691 | * Main message loop. |
| 692 | */ |
| 693 | while (GetMessage(&msg, NULL, 0, 0) == 1) { |
| 694 | TranslateMessage(&msg); |
| 695 | DispatchMessage(&msg); |
| 696 | } |
| 697 | |
| 698 | /* Clean up the system tray icon */ |
| 699 | { |
| 700 | NOTIFYICONDATA tnid; |
| 701 | |
| 702 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
| 703 | tnid.hWnd = hwnd; |
| 704 | tnid.uID = 1; |
| 705 | |
| 706 | Shell_NotifyIcon(NIM_DELETE, &tnid); |
| 707 | |
| 708 | DestroyMenu(systray_menu); |
| 709 | } |
| 710 | |
| 711 | if (advapi) FreeLibrary(advapi); |
| 712 | exit(msg.wParam); |
| 713 | } |