| 1 | /* |
| 2 | * Pageant: the PuTTY Authentication Agent. |
| 3 | */ |
| 4 | |
| 5 | #include <windows.h> |
| 6 | #ifndef NO_SECURITY |
| 7 | #include <aclapi.h> |
| 8 | #endif |
| 9 | #include <stdio.h> |
| 10 | #include <stdlib.h> |
| 11 | #include <ctype.h> |
| 12 | #include <assert.h> |
| 13 | #include <tchar.h> |
| 14 | |
| 15 | #include "ssh.h" |
| 16 | #include "misc.h" |
| 17 | #include "tree234.h" |
| 18 | #include "winstuff.h" |
| 19 | |
| 20 | #define IDI_MAINICON 200 |
| 21 | #define IDI_TRAYICON 201 |
| 22 | |
| 23 | #define WM_XUSER (WM_USER + 0x2000) |
| 24 | #define WM_SYSTRAY (WM_XUSER + 6) |
| 25 | #define WM_SYSTRAY2 (WM_XUSER + 7) |
| 26 | |
| 27 | #define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ |
| 28 | |
| 29 | /* |
| 30 | * FIXME: maybe some day we can sort this out ... |
| 31 | */ |
| 32 | #define AGENT_MAX_MSGLEN 8192 |
| 33 | |
| 34 | #define IDM_CLOSE 0x0010 |
| 35 | #define IDM_VIEWKEYS 0x0020 |
| 36 | #define IDM_ADDKEY 0x0030 |
| 37 | #define IDM_HELP 0x0040 |
| 38 | #define IDM_ABOUT 0x0050 |
| 39 | |
| 40 | #define APPNAME "Pageant" |
| 41 | |
| 42 | extern char ver[]; |
| 43 | |
| 44 | static HINSTANCE instance; |
| 45 | static HWND main_hwnd; |
| 46 | static HWND keylist; |
| 47 | static HWND aboutbox; |
| 48 | static HMENU systray_menu, session_menu; |
| 49 | static int already_running; |
| 50 | static int requested_help; |
| 51 | |
| 52 | static char *help_path; |
| 53 | static char *putty_path; |
| 54 | |
| 55 | #define IDM_PUTTY 0x0060 |
| 56 | #define IDM_SESSIONS_BASE 0x1000 |
| 57 | #define IDM_SESSIONS_MAX 0x2000 |
| 58 | #define PUTTY_REGKEY "Software\\SimonTatham\\PuTTY\\Sessions" |
| 59 | #define PUTTY_DEFAULT "Default%20Settings" |
| 60 | static int initial_menuitems_count; |
| 61 | |
| 62 | /* |
| 63 | * Print a modal (Really Bad) message box and perform a fatal exit. |
| 64 | */ |
| 65 | void modalfatalbox(char *fmt, ...) |
| 66 | { |
| 67 | va_list ap; |
| 68 | char *buf; |
| 69 | |
| 70 | va_start(ap, fmt); |
| 71 | buf = dupvprintf(fmt, ap); |
| 72 | va_end(ap); |
| 73 | MessageBox(main_hwnd, buf, "Pageant Fatal Error", |
| 74 | MB_SYSTEMMODAL | MB_ICONERROR | MB_OK); |
| 75 | sfree(buf); |
| 76 | exit(1); |
| 77 | } |
| 78 | |
| 79 | /* Un-munge session names out of the registry. */ |
| 80 | static void unmungestr(char *in, char *out, int outlen) |
| 81 | { |
| 82 | while (*in) { |
| 83 | if (*in == '%' && in[1] && in[2]) { |
| 84 | int i, j; |
| 85 | |
| 86 | i = in[1] - '0'; |
| 87 | i -= (i > 9 ? 7 : 0); |
| 88 | j = in[2] - '0'; |
| 89 | j -= (j > 9 ? 7 : 0); |
| 90 | |
| 91 | *out++ = (i << 4) + j; |
| 92 | if (!--outlen) |
| 93 | return; |
| 94 | in += 3; |
| 95 | } else { |
| 96 | *out++ = *in++; |
| 97 | if (!--outlen) |
| 98 | return; |
| 99 | } |
| 100 | } |
| 101 | *out = '\0'; |
| 102 | return; |
| 103 | } |
| 104 | |
| 105 | static tree234 *rsakeys, *ssh2keys; |
| 106 | |
| 107 | static int has_security; |
| 108 | #ifndef NO_SECURITY |
| 109 | typedef DWORD(WINAPI * gsi_fn_t) |
| 110 | (HANDLE, SE_OBJECT_TYPE, SECURITY_INFORMATION, |
| 111 | PSID *, PSID *, PACL *, PACL *, PSECURITY_DESCRIPTOR *); |
| 112 | static gsi_fn_t getsecurityinfo; |
| 113 | #endif |
| 114 | |
| 115 | /* |
| 116 | * Exports from pageantc.c |
| 117 | */ |
| 118 | void agent_query(void *in, int inlen, void **out, int *outlen); |
| 119 | int agent_exists(void); |
| 120 | |
| 121 | /* |
| 122 | * Forward references |
| 123 | */ |
| 124 | static void *make_keylist1(int *length); |
| 125 | static void *make_keylist2(int *length); |
| 126 | static void *get_keylist1(void); |
| 127 | static void *get_keylist2(void); |
| 128 | |
| 129 | /* |
| 130 | * We need this to link with the RSA code, because rsaencrypt() |
| 131 | * pads its data with random bytes. Since we only use rsadecrypt() |
| 132 | * and the signing functions, which are deterministic, this should |
| 133 | * never be called. |
| 134 | * |
| 135 | * If it _is_ called, there is a _serious_ problem, because it |
| 136 | * won't generate true random numbers. So we must scream, panic, |
| 137 | * and exit immediately if that should happen. |
| 138 | */ |
| 139 | int random_byte(void) |
| 140 | { |
| 141 | MessageBox(main_hwnd, "Internal Error", APPNAME, MB_OK | MB_ICONERROR); |
| 142 | exit(0); |
| 143 | /* this line can't be reached but it placates MSVC's warnings :-) */ |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Blob structure for passing to the asymmetric SSH2 key compare |
| 149 | * function, prototyped here. |
| 150 | */ |
| 151 | struct blob { |
| 152 | unsigned char *blob; |
| 153 | int len; |
| 154 | }; |
| 155 | static int cmpkeys_ssh2_asymm(void *av, void *bv); |
| 156 | |
| 157 | #define GET_32BIT(cp) \ |
| 158 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
| 159 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
| 160 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
| 161 | ((unsigned long)(unsigned char)(cp)[3])) |
| 162 | |
| 163 | #define PUT_32BIT(cp, value) { \ |
| 164 | (cp)[0] = (unsigned char)((value) >> 24); \ |
| 165 | (cp)[1] = (unsigned char)((value) >> 16); \ |
| 166 | (cp)[2] = (unsigned char)((value) >> 8); \ |
| 167 | (cp)[3] = (unsigned char)(value); } |
| 168 | |
| 169 | #define PASSPHRASE_MAXLEN 512 |
| 170 | |
| 171 | struct PassphraseProcStruct { |
| 172 | char *passphrase; |
| 173 | char *comment; |
| 174 | }; |
| 175 | |
| 176 | static tree234 *passphrases = NULL; |
| 177 | |
| 178 | /* |
| 179 | * After processing a list of filenames, we want to forget the |
| 180 | * passphrases. |
| 181 | */ |
| 182 | static void forget_passphrases(void) |
| 183 | { |
| 184 | while (count234(passphrases) > 0) { |
| 185 | char *pp = index234(passphrases, 0); |
| 186 | memset(pp, 0, strlen(pp)); |
| 187 | delpos234(passphrases, 0); |
| 188 | free(pp); |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | /* |
| 193 | * Dialog-box function for the Licence box. |
| 194 | */ |
| 195 | static int CALLBACK LicenceProc(HWND hwnd, UINT msg, |
| 196 | WPARAM wParam, LPARAM lParam) |
| 197 | { |
| 198 | switch (msg) { |
| 199 | case WM_INITDIALOG: |
| 200 | return 1; |
| 201 | case WM_COMMAND: |
| 202 | switch (LOWORD(wParam)) { |
| 203 | case IDOK: |
| 204 | EndDialog(hwnd, 1); |
| 205 | return 0; |
| 206 | } |
| 207 | return 0; |
| 208 | case WM_CLOSE: |
| 209 | EndDialog(hwnd, 1); |
| 210 | return 0; |
| 211 | } |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | /* |
| 216 | * Dialog-box function for the About box. |
| 217 | */ |
| 218 | static int CALLBACK AboutProc(HWND hwnd, UINT msg, |
| 219 | WPARAM wParam, LPARAM lParam) |
| 220 | { |
| 221 | switch (msg) { |
| 222 | case WM_INITDIALOG: |
| 223 | SetDlgItemText(hwnd, 100, ver); |
| 224 | return 1; |
| 225 | case WM_COMMAND: |
| 226 | switch (LOWORD(wParam)) { |
| 227 | case IDOK: |
| 228 | aboutbox = NULL; |
| 229 | DestroyWindow(hwnd); |
| 230 | return 0; |
| 231 | case 101: |
| 232 | EnableWindow(hwnd, 0); |
| 233 | DialogBox(instance, MAKEINTRESOURCE(214), NULL, LicenceProc); |
| 234 | EnableWindow(hwnd, 1); |
| 235 | SetActiveWindow(hwnd); |
| 236 | return 0; |
| 237 | } |
| 238 | return 0; |
| 239 | case WM_CLOSE: |
| 240 | aboutbox = NULL; |
| 241 | DestroyWindow(hwnd); |
| 242 | return 0; |
| 243 | } |
| 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | static HWND passphrase_box; |
| 248 | |
| 249 | /* |
| 250 | * Dialog-box function for the passphrase box. |
| 251 | */ |
| 252 | static int CALLBACK PassphraseProc(HWND hwnd, UINT msg, |
| 253 | WPARAM wParam, LPARAM lParam) |
| 254 | { |
| 255 | static char *passphrase = NULL; |
| 256 | struct PassphraseProcStruct *p; |
| 257 | |
| 258 | switch (msg) { |
| 259 | case WM_INITDIALOG: |
| 260 | passphrase_box = hwnd; |
| 261 | /* |
| 262 | * Centre the window. |
| 263 | */ |
| 264 | { /* centre the window */ |
| 265 | RECT rs, rd; |
| 266 | HWND hw; |
| 267 | |
| 268 | hw = GetDesktopWindow(); |
| 269 | if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd)) |
| 270 | MoveWindow(hwnd, |
| 271 | (rs.right + rs.left + rd.left - rd.right) / 2, |
| 272 | (rs.bottom + rs.top + rd.top - rd.bottom) / 2, |
| 273 | rd.right - rd.left, rd.bottom - rd.top, TRUE); |
| 274 | } |
| 275 | |
| 276 | SetForegroundWindow(hwnd); |
| 277 | SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0, |
| 278 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
| 279 | p = (struct PassphraseProcStruct *) lParam; |
| 280 | passphrase = p->passphrase; |
| 281 | if (p->comment) |
| 282 | SetDlgItemText(hwnd, 101, p->comment); |
| 283 | *passphrase = 0; |
| 284 | SetDlgItemText(hwnd, 102, passphrase); |
| 285 | return 0; |
| 286 | case WM_COMMAND: |
| 287 | switch (LOWORD(wParam)) { |
| 288 | case IDOK: |
| 289 | if (*passphrase) |
| 290 | EndDialog(hwnd, 1); |
| 291 | else |
| 292 | MessageBeep(0); |
| 293 | return 0; |
| 294 | case IDCANCEL: |
| 295 | EndDialog(hwnd, 0); |
| 296 | return 0; |
| 297 | case 102: /* edit box */ |
| 298 | if ((HIWORD(wParam) == EN_CHANGE) && passphrase) { |
| 299 | GetDlgItemText(hwnd, 102, passphrase, |
| 300 | PASSPHRASE_MAXLEN - 1); |
| 301 | passphrase[PASSPHRASE_MAXLEN - 1] = '\0'; |
| 302 | } |
| 303 | return 0; |
| 304 | } |
| 305 | return 0; |
| 306 | case WM_CLOSE: |
| 307 | EndDialog(hwnd, 0); |
| 308 | return 0; |
| 309 | } |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | /* |
| 314 | * Warn about the obsolescent key file format. |
| 315 | */ |
| 316 | void old_keyfile_warning(void) |
| 317 | { |
| 318 | static const char mbtitle[] = "PuTTY Key File Warning"; |
| 319 | static const char message[] = |
| 320 | "You are loading an SSH 2 private key which has an\n" |
| 321 | "old version of the file format. This means your key\n" |
| 322 | "file is not fully tamperproof. Future versions of\n" |
| 323 | "PuTTY may stop supporting this private key format,\n" |
| 324 | "so we recommend you convert your key to the new\n" |
| 325 | "format.\n" |
| 326 | "\n" |
| 327 | "You can perform this conversion by loading the key\n" |
| 328 | "into PuTTYgen and then saving it again."; |
| 329 | |
| 330 | MessageBox(NULL, message, mbtitle, MB_OK); |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * Update the visible key list. |
| 335 | */ |
| 336 | static void keylist_update(void) |
| 337 | { |
| 338 | struct RSAKey *rkey; |
| 339 | struct ssh2_userkey *skey; |
| 340 | int i; |
| 341 | |
| 342 | if (keylist) { |
| 343 | SendDlgItemMessage(keylist, 100, LB_RESETCONTENT, 0, 0); |
| 344 | for (i = 0; NULL != (rkey = index234(rsakeys, i)); i++) { |
| 345 | char listentry[512], *p; |
| 346 | /* |
| 347 | * Replace two spaces in the fingerprint with tabs, for |
| 348 | * nice alignment in the box. |
| 349 | */ |
| 350 | strcpy(listentry, "ssh1\t"); |
| 351 | p = listentry + strlen(listentry); |
| 352 | rsa_fingerprint(p, sizeof(listentry) - (p - listentry), rkey); |
| 353 | p = strchr(listentry, ' '); |
| 354 | if (p) |
| 355 | *p = '\t'; |
| 356 | p = strchr(listentry, ' '); |
| 357 | if (p) |
| 358 | *p = '\t'; |
| 359 | SendDlgItemMessage(keylist, 100, LB_ADDSTRING, |
| 360 | 0, (LPARAM) listentry); |
| 361 | } |
| 362 | for (i = 0; NULL != (skey = index234(ssh2keys, i)); i++) { |
| 363 | char listentry[512], *p; |
| 364 | int len; |
| 365 | /* |
| 366 | * Replace two spaces in the fingerprint with tabs, for |
| 367 | * nice alignment in the box. |
| 368 | */ |
| 369 | p = skey->alg->fingerprint(skey->data); |
| 370 | strncpy(listentry, p, sizeof(listentry)); |
| 371 | p = strchr(listentry, ' '); |
| 372 | if (p) |
| 373 | *p = '\t'; |
| 374 | p = strchr(listentry, ' '); |
| 375 | if (p) |
| 376 | *p = '\t'; |
| 377 | len = strlen(listentry); |
| 378 | if (len < sizeof(listentry) - 2) { |
| 379 | listentry[len] = '\t'; |
| 380 | strncpy(listentry + len + 1, skey->comment, |
| 381 | sizeof(listentry) - len - 1); |
| 382 | } |
| 383 | SendDlgItemMessage(keylist, 100, LB_ADDSTRING, 0, |
| 384 | (LPARAM) listentry); |
| 385 | } |
| 386 | SendDlgItemMessage(keylist, 100, LB_SETCURSEL, (WPARAM) - 1, 0); |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | /* |
| 391 | * This function loads a key from a file and adds it. |
| 392 | */ |
| 393 | static void add_keyfile(char *filename) |
| 394 | { |
| 395 | char passphrase[PASSPHRASE_MAXLEN]; |
| 396 | struct RSAKey *rkey = NULL; |
| 397 | struct ssh2_userkey *skey = NULL; |
| 398 | int needs_pass; |
| 399 | int ret; |
| 400 | int attempts; |
| 401 | char *comment; |
| 402 | struct PassphraseProcStruct pps; |
| 403 | int type; |
| 404 | int original_pass; |
| 405 | |
| 406 | type = key_type(filename); |
| 407 | if (type != SSH_KEYTYPE_SSH1 && type != SSH_KEYTYPE_SSH2) { |
| 408 | char msg[256]; |
| 409 | sprintf(msg, "Couldn't load this key (%s)", key_type_to_str(type)); |
| 410 | MessageBox(NULL, msg, APPNAME, MB_OK | MB_ICONERROR); |
| 411 | return; |
| 412 | } |
| 413 | |
| 414 | /* |
| 415 | * See if the key is already loaded (in the primary Pageant, |
| 416 | * which may or may not be us). |
| 417 | */ |
| 418 | { |
| 419 | void *blob; |
| 420 | unsigned char *keylist, *p; |
| 421 | int i, nkeys, bloblen; |
| 422 | |
| 423 | if (type == SSH_KEYTYPE_SSH1) { |
| 424 | if (!rsakey_pubblob(filename, &blob, &bloblen)) { |
| 425 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
| 426 | MB_OK | MB_ICONERROR); |
| 427 | return; |
| 428 | } |
| 429 | keylist = get_keylist1(); |
| 430 | } else { |
| 431 | unsigned char *blob2; |
| 432 | blob = ssh2_userkey_loadpub(filename, NULL, &bloblen); |
| 433 | if (!blob) { |
| 434 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
| 435 | MB_OK | MB_ICONERROR); |
| 436 | return; |
| 437 | } |
| 438 | /* For our purposes we want the blob prefixed with its length */ |
| 439 | blob2 = smalloc(bloblen+4); |
| 440 | PUT_32BIT(blob2, bloblen); |
| 441 | memcpy(blob2 + 4, blob, bloblen); |
| 442 | sfree(blob); |
| 443 | blob = blob2; |
| 444 | |
| 445 | keylist = get_keylist2(); |
| 446 | } |
| 447 | if (keylist) { |
| 448 | nkeys = GET_32BIT(keylist); |
| 449 | p = keylist + 4; |
| 450 | |
| 451 | for (i = 0; i < nkeys; i++) { |
| 452 | if (!memcmp(blob, p, bloblen)) { |
| 453 | /* Key is already present; we can now leave. */ |
| 454 | sfree(keylist); |
| 455 | sfree(blob); |
| 456 | return; |
| 457 | } |
| 458 | /* Now skip over public blob */ |
| 459 | if (type == SSH_KEYTYPE_SSH1) |
| 460 | p += rsa_public_blob_len(p); |
| 461 | else |
| 462 | p += 4 + GET_32BIT(p); |
| 463 | /* Now skip over comment field */ |
| 464 | p += 4 + GET_32BIT(p); |
| 465 | } |
| 466 | |
| 467 | sfree(keylist); |
| 468 | } |
| 469 | |
| 470 | sfree(blob); |
| 471 | } |
| 472 | |
| 473 | if (type == SSH_KEYTYPE_SSH1) |
| 474 | needs_pass = rsakey_encrypted(filename, &comment); |
| 475 | else |
| 476 | needs_pass = ssh2_userkey_encrypted(filename, &comment); |
| 477 | attempts = 0; |
| 478 | if (type == SSH_KEYTYPE_SSH1) |
| 479 | rkey = smalloc(sizeof(*rkey)); |
| 480 | pps.passphrase = passphrase; |
| 481 | pps.comment = comment; |
| 482 | original_pass = 0; |
| 483 | do { |
| 484 | if (needs_pass) { |
| 485 | /* try all the remembered passphrases first */ |
| 486 | char *pp = index234(passphrases, attempts); |
| 487 | if(pp) { |
| 488 | strcpy(passphrase, pp); |
| 489 | } else { |
| 490 | int dlgret; |
| 491 | original_pass = 1; |
| 492 | dlgret = DialogBoxParam(instance, MAKEINTRESOURCE(210), |
| 493 | NULL, PassphraseProc, (LPARAM) & pps); |
| 494 | passphrase_box = NULL; |
| 495 | if (!dlgret) { |
| 496 | if (comment) |
| 497 | sfree(comment); |
| 498 | if (type == SSH_KEYTYPE_SSH1) |
| 499 | sfree(rkey); |
| 500 | return; /* operation cancelled */ |
| 501 | } |
| 502 | } |
| 503 | } else |
| 504 | *passphrase = '\0'; |
| 505 | if (type == SSH_KEYTYPE_SSH1) |
| 506 | ret = loadrsakey(filename, rkey, passphrase); |
| 507 | else { |
| 508 | skey = ssh2_load_userkey(filename, passphrase); |
| 509 | if (skey == SSH2_WRONG_PASSPHRASE) |
| 510 | ret = -1; |
| 511 | else if (!skey) |
| 512 | ret = 0; |
| 513 | else |
| 514 | ret = 1; |
| 515 | } |
| 516 | attempts++; |
| 517 | } while (ret == -1); |
| 518 | |
| 519 | /* if they typed in an ok passphrase, remember it */ |
| 520 | if(original_pass && ret) { |
| 521 | char *pp = dupstr(passphrase); |
| 522 | addpos234(passphrases, pp, 0); |
| 523 | } |
| 524 | |
| 525 | if (comment) |
| 526 | sfree(comment); |
| 527 | if (ret == 0) { |
| 528 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
| 529 | MB_OK | MB_ICONERROR); |
| 530 | if (type == SSH_KEYTYPE_SSH1) |
| 531 | sfree(rkey); |
| 532 | return; |
| 533 | } |
| 534 | if (type == SSH_KEYTYPE_SSH1) { |
| 535 | if (already_running) { |
| 536 | unsigned char *request, *response; |
| 537 | void *vresponse; |
| 538 | int reqlen, clen, resplen; |
| 539 | |
| 540 | clen = strlen(rkey->comment); |
| 541 | |
| 542 | reqlen = 4 + 1 + /* length, message type */ |
| 543 | 4 + /* bit count */ |
| 544 | ssh1_bignum_length(rkey->modulus) + |
| 545 | ssh1_bignum_length(rkey->exponent) + |
| 546 | ssh1_bignum_length(rkey->private_exponent) + |
| 547 | ssh1_bignum_length(rkey->iqmp) + |
| 548 | ssh1_bignum_length(rkey->p) + |
| 549 | ssh1_bignum_length(rkey->q) + 4 + clen /* comment */ |
| 550 | ; |
| 551 | |
| 552 | request = smalloc(reqlen); |
| 553 | |
| 554 | request[4] = SSH1_AGENTC_ADD_RSA_IDENTITY; |
| 555 | reqlen = 5; |
| 556 | PUT_32BIT(request + reqlen, bignum_bitcount(rkey->modulus)); |
| 557 | reqlen += 4; |
| 558 | reqlen += ssh1_write_bignum(request + reqlen, rkey->modulus); |
| 559 | reqlen += ssh1_write_bignum(request + reqlen, rkey->exponent); |
| 560 | reqlen += |
| 561 | ssh1_write_bignum(request + reqlen, |
| 562 | rkey->private_exponent); |
| 563 | reqlen += ssh1_write_bignum(request + reqlen, rkey->iqmp); |
| 564 | reqlen += ssh1_write_bignum(request + reqlen, rkey->p); |
| 565 | reqlen += ssh1_write_bignum(request + reqlen, rkey->q); |
| 566 | PUT_32BIT(request + reqlen, clen); |
| 567 | memcpy(request + reqlen + 4, rkey->comment, clen); |
| 568 | reqlen += 4 + clen; |
| 569 | PUT_32BIT(request, reqlen - 4); |
| 570 | |
| 571 | agent_query(request, reqlen, &vresponse, &resplen); |
| 572 | response = vresponse; |
| 573 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
| 574 | MessageBox(NULL, "The already running Pageant " |
| 575 | "refused to add the key.", APPNAME, |
| 576 | MB_OK | MB_ICONERROR); |
| 577 | |
| 578 | sfree(request); |
| 579 | sfree(response); |
| 580 | } else { |
| 581 | if (add234(rsakeys, rkey) != rkey) |
| 582 | sfree(rkey); /* already present, don't waste RAM */ |
| 583 | } |
| 584 | } else { |
| 585 | if (already_running) { |
| 586 | unsigned char *request, *response; |
| 587 | void *vresponse; |
| 588 | int reqlen, alglen, clen, keybloblen, resplen; |
| 589 | alglen = strlen(skey->alg->name); |
| 590 | clen = strlen(skey->comment); |
| 591 | |
| 592 | keybloblen = skey->alg->openssh_fmtkey(skey->data, NULL, 0); |
| 593 | |
| 594 | reqlen = 4 + 1 + /* length, message type */ |
| 595 | 4 + alglen + /* algorithm name */ |
| 596 | keybloblen + /* key data */ |
| 597 | 4 + clen /* comment */ |
| 598 | ; |
| 599 | |
| 600 | request = smalloc(reqlen); |
| 601 | |
| 602 | request[4] = SSH2_AGENTC_ADD_IDENTITY; |
| 603 | reqlen = 5; |
| 604 | PUT_32BIT(request + reqlen, alglen); |
| 605 | reqlen += 4; |
| 606 | memcpy(request + reqlen, skey->alg->name, alglen); |
| 607 | reqlen += alglen; |
| 608 | reqlen += skey->alg->openssh_fmtkey(skey->data, |
| 609 | request + reqlen, |
| 610 | keybloblen); |
| 611 | PUT_32BIT(request + reqlen, clen); |
| 612 | memcpy(request + reqlen + 4, skey->comment, clen); |
| 613 | PUT_32BIT(request, reqlen - 4); |
| 614 | reqlen += clen + 4; |
| 615 | |
| 616 | agent_query(request, reqlen, &vresponse, &resplen); |
| 617 | response = vresponse; |
| 618 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
| 619 | MessageBox(NULL, "The already running Pageant " |
| 620 | "refused to add the key.", APPNAME, |
| 621 | MB_OK | MB_ICONERROR); |
| 622 | |
| 623 | sfree(request); |
| 624 | sfree(response); |
| 625 | } else { |
| 626 | if (add234(ssh2keys, skey) != skey) { |
| 627 | skey->alg->freekey(skey->data); |
| 628 | sfree(skey); /* already present, don't waste RAM */ |
| 629 | } |
| 630 | } |
| 631 | } |
| 632 | } |
| 633 | |
| 634 | /* |
| 635 | * Create an SSH1 key list in a malloc'ed buffer; return its |
| 636 | * length. |
| 637 | */ |
| 638 | static void *make_keylist1(int *length) |
| 639 | { |
| 640 | int i, nkeys, len; |
| 641 | struct RSAKey *key; |
| 642 | unsigned char *blob, *p, *ret; |
| 643 | int bloblen; |
| 644 | |
| 645 | /* |
| 646 | * Count up the number and length of keys we hold. |
| 647 | */ |
| 648 | len = 4; |
| 649 | nkeys = 0; |
| 650 | for (i = 0; NULL != (key = index234(rsakeys, i)); i++) { |
| 651 | nkeys++; |
| 652 | blob = rsa_public_blob(key, &bloblen); |
| 653 | len += bloblen; |
| 654 | sfree(blob); |
| 655 | len += 4 + strlen(key->comment); |
| 656 | } |
| 657 | |
| 658 | /* Allocate the buffer. */ |
| 659 | p = ret = smalloc(len); |
| 660 | if (length) *length = len; |
| 661 | |
| 662 | PUT_32BIT(p, nkeys); |
| 663 | p += 4; |
| 664 | for (i = 0; NULL != (key = index234(rsakeys, i)); i++) { |
| 665 | blob = rsa_public_blob(key, &bloblen); |
| 666 | memcpy(p, blob, bloblen); |
| 667 | p += bloblen; |
| 668 | sfree(blob); |
| 669 | PUT_32BIT(p, strlen(key->comment)); |
| 670 | memcpy(p + 4, key->comment, strlen(key->comment)); |
| 671 | p += 4 + strlen(key->comment); |
| 672 | } |
| 673 | |
| 674 | assert(p - ret == len); |
| 675 | return ret; |
| 676 | } |
| 677 | |
| 678 | /* |
| 679 | * Create an SSH2 key list in a malloc'ed buffer; return its |
| 680 | * length. |
| 681 | */ |
| 682 | static void *make_keylist2(int *length) |
| 683 | { |
| 684 | struct ssh2_userkey *key; |
| 685 | int i, len, nkeys; |
| 686 | unsigned char *blob, *p, *ret; |
| 687 | int bloblen; |
| 688 | |
| 689 | /* |
| 690 | * Count up the number and length of keys we hold. |
| 691 | */ |
| 692 | len = 4; |
| 693 | nkeys = 0; |
| 694 | for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) { |
| 695 | nkeys++; |
| 696 | len += 4; /* length field */ |
| 697 | blob = key->alg->public_blob(key->data, &bloblen); |
| 698 | len += bloblen; |
| 699 | sfree(blob); |
| 700 | len += 4 + strlen(key->comment); |
| 701 | } |
| 702 | |
| 703 | /* Allocate the buffer. */ |
| 704 | p = ret = smalloc(len); |
| 705 | if (length) *length = len; |
| 706 | |
| 707 | /* |
| 708 | * Packet header is the obvious five bytes, plus four |
| 709 | * bytes for the key count. |
| 710 | */ |
| 711 | PUT_32BIT(p, nkeys); |
| 712 | p += 4; |
| 713 | for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) { |
| 714 | blob = key->alg->public_blob(key->data, &bloblen); |
| 715 | PUT_32BIT(p, bloblen); |
| 716 | p += 4; |
| 717 | memcpy(p, blob, bloblen); |
| 718 | p += bloblen; |
| 719 | sfree(blob); |
| 720 | PUT_32BIT(p, strlen(key->comment)); |
| 721 | memcpy(p + 4, key->comment, strlen(key->comment)); |
| 722 | p += 4 + strlen(key->comment); |
| 723 | } |
| 724 | |
| 725 | assert(p - ret == len); |
| 726 | return ret; |
| 727 | } |
| 728 | |
| 729 | /* |
| 730 | * Acquire a keylist1 from the primary Pageant; this means either |
| 731 | * calling make_keylist1 (if that's us) or sending a message to the |
| 732 | * primary Pageant (if it's not). |
| 733 | */ |
| 734 | static void *get_keylist1(void) |
| 735 | { |
| 736 | void *ret; |
| 737 | |
| 738 | if (already_running) { |
| 739 | unsigned char request[5], *response; |
| 740 | void *vresponse; |
| 741 | int resplen; |
| 742 | request[4] = SSH1_AGENTC_REQUEST_RSA_IDENTITIES; |
| 743 | PUT_32BIT(request, 4); |
| 744 | |
| 745 | agent_query(request, 5, &vresponse, &resplen); |
| 746 | response = vresponse; |
| 747 | if (resplen < 5 || response[4] != SSH1_AGENT_RSA_IDENTITIES_ANSWER) |
| 748 | return NULL; |
| 749 | |
| 750 | ret = smalloc(resplen-5); |
| 751 | memcpy(ret, response+5, resplen-5); |
| 752 | sfree(response); |
| 753 | } else { |
| 754 | ret = make_keylist1(NULL); |
| 755 | } |
| 756 | return ret; |
| 757 | } |
| 758 | |
| 759 | /* |
| 760 | * Acquire a keylist2 from the primary Pageant; this means either |
| 761 | * calling make_keylist2 (if that's us) or sending a message to the |
| 762 | * primary Pageant (if it's not). |
| 763 | */ |
| 764 | static void *get_keylist2(void) |
| 765 | { |
| 766 | void *ret; |
| 767 | |
| 768 | if (already_running) { |
| 769 | unsigned char request[5], *response; |
| 770 | void *vresponse; |
| 771 | int resplen; |
| 772 | |
| 773 | request[4] = SSH2_AGENTC_REQUEST_IDENTITIES; |
| 774 | PUT_32BIT(request, 4); |
| 775 | |
| 776 | agent_query(request, 5, &vresponse, &resplen); |
| 777 | response = vresponse; |
| 778 | if (resplen < 5 || response[4] != SSH2_AGENT_IDENTITIES_ANSWER) |
| 779 | return NULL; |
| 780 | |
| 781 | ret = smalloc(resplen-5); |
| 782 | memcpy(ret, response+5, resplen-5); |
| 783 | sfree(response); |
| 784 | } else { |
| 785 | ret = make_keylist2(NULL); |
| 786 | } |
| 787 | return ret; |
| 788 | } |
| 789 | |
| 790 | /* |
| 791 | * This is the main agent function that answers messages. |
| 792 | */ |
| 793 | static void answer_msg(void *msg) |
| 794 | { |
| 795 | unsigned char *p = msg; |
| 796 | unsigned char *ret = msg; |
| 797 | int type; |
| 798 | |
| 799 | /* |
| 800 | * Get the message type. |
| 801 | */ |
| 802 | type = p[4]; |
| 803 | |
| 804 | p += 5; |
| 805 | switch (type) { |
| 806 | case SSH1_AGENTC_REQUEST_RSA_IDENTITIES: |
| 807 | /* |
| 808 | * Reply with SSH1_AGENT_RSA_IDENTITIES_ANSWER. |
| 809 | */ |
| 810 | { |
| 811 | int len; |
| 812 | void *keylist; |
| 813 | |
| 814 | ret[4] = SSH1_AGENT_RSA_IDENTITIES_ANSWER; |
| 815 | keylist = make_keylist1(&len); |
| 816 | if (len + 5 > AGENT_MAX_MSGLEN) { |
| 817 | sfree(keylist); |
| 818 | goto failure; |
| 819 | } |
| 820 | PUT_32BIT(ret, len + 1); |
| 821 | memcpy(ret + 5, keylist, len); |
| 822 | sfree(keylist); |
| 823 | } |
| 824 | break; |
| 825 | case SSH2_AGENTC_REQUEST_IDENTITIES: |
| 826 | /* |
| 827 | * Reply with SSH2_AGENT_IDENTITIES_ANSWER. |
| 828 | */ |
| 829 | { |
| 830 | int len; |
| 831 | void *keylist; |
| 832 | |
| 833 | ret[4] = SSH2_AGENT_IDENTITIES_ANSWER; |
| 834 | keylist = make_keylist2(&len); |
| 835 | if (len + 5 > AGENT_MAX_MSGLEN) { |
| 836 | sfree(keylist); |
| 837 | goto failure; |
| 838 | } |
| 839 | PUT_32BIT(ret, len + 1); |
| 840 | memcpy(ret + 5, keylist, len); |
| 841 | sfree(keylist); |
| 842 | } |
| 843 | break; |
| 844 | case SSH1_AGENTC_RSA_CHALLENGE: |
| 845 | /* |
| 846 | * Reply with either SSH1_AGENT_RSA_RESPONSE or |
| 847 | * SSH_AGENT_FAILURE, depending on whether we have that key |
| 848 | * or not. |
| 849 | */ |
| 850 | { |
| 851 | struct RSAKey reqkey, *key; |
| 852 | Bignum challenge, response; |
| 853 | unsigned char response_source[48], response_md5[16]; |
| 854 | struct MD5Context md5c; |
| 855 | int i, len; |
| 856 | |
| 857 | p += 4; |
| 858 | p += ssh1_read_bignum(p, &reqkey.exponent); |
| 859 | p += ssh1_read_bignum(p, &reqkey.modulus); |
| 860 | p += ssh1_read_bignum(p, &challenge); |
| 861 | memcpy(response_source + 32, p, 16); |
| 862 | p += 16; |
| 863 | if (GET_32BIT(p) != 1 || |
| 864 | (key = find234(rsakeys, &reqkey, NULL)) == NULL) { |
| 865 | freebn(reqkey.exponent); |
| 866 | freebn(reqkey.modulus); |
| 867 | freebn(challenge); |
| 868 | goto failure; |
| 869 | } |
| 870 | response = rsadecrypt(challenge, key); |
| 871 | for (i = 0; i < 32; i++) |
| 872 | response_source[i] = bignum_byte(response, 31 - i); |
| 873 | |
| 874 | MD5Init(&md5c); |
| 875 | MD5Update(&md5c, response_source, 48); |
| 876 | MD5Final(response_md5, &md5c); |
| 877 | memset(response_source, 0, 48); /* burn the evidence */ |
| 878 | freebn(response); /* and that evidence */ |
| 879 | freebn(challenge); /* yes, and that evidence */ |
| 880 | freebn(reqkey.exponent); /* and free some memory ... */ |
| 881 | freebn(reqkey.modulus); /* ... while we're at it. */ |
| 882 | |
| 883 | /* |
| 884 | * Packet is the obvious five byte header, plus sixteen |
| 885 | * bytes of MD5. |
| 886 | */ |
| 887 | len = 5 + 16; |
| 888 | PUT_32BIT(ret, len - 4); |
| 889 | ret[4] = SSH1_AGENT_RSA_RESPONSE; |
| 890 | memcpy(ret + 5, response_md5, 16); |
| 891 | } |
| 892 | break; |
| 893 | case SSH2_AGENTC_SIGN_REQUEST: |
| 894 | /* |
| 895 | * Reply with either SSH2_AGENT_SIGN_RESPONSE or |
| 896 | * SSH_AGENT_FAILURE, depending on whether we have that key |
| 897 | * or not. |
| 898 | */ |
| 899 | { |
| 900 | struct ssh2_userkey *key; |
| 901 | struct blob b; |
| 902 | unsigned char *data, *signature; |
| 903 | int datalen, siglen, len; |
| 904 | |
| 905 | b.len = GET_32BIT(p); |
| 906 | p += 4; |
| 907 | b.blob = p; |
| 908 | p += b.len; |
| 909 | datalen = GET_32BIT(p); |
| 910 | p += 4; |
| 911 | data = p; |
| 912 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
| 913 | if (!key) |
| 914 | goto failure; |
| 915 | signature = key->alg->sign(key->data, data, datalen, &siglen); |
| 916 | len = 5 + 4 + siglen; |
| 917 | PUT_32BIT(ret, len - 4); |
| 918 | ret[4] = SSH2_AGENT_SIGN_RESPONSE; |
| 919 | PUT_32BIT(ret + 5, siglen); |
| 920 | memcpy(ret + 5 + 4, signature, siglen); |
| 921 | sfree(signature); |
| 922 | } |
| 923 | break; |
| 924 | case SSH1_AGENTC_ADD_RSA_IDENTITY: |
| 925 | /* |
| 926 | * Add to the list and return SSH_AGENT_SUCCESS, or |
| 927 | * SSH_AGENT_FAILURE if the key was malformed. |
| 928 | */ |
| 929 | { |
| 930 | struct RSAKey *key; |
| 931 | char *comment; |
| 932 | int commentlen; |
| 933 | key = smalloc(sizeof(struct RSAKey)); |
| 934 | memset(key, 0, sizeof(struct RSAKey)); |
| 935 | p += makekey(p, key, NULL, 1); |
| 936 | p += makeprivate(p, key); |
| 937 | p += ssh1_read_bignum(p, &key->iqmp); /* p^-1 mod q */ |
| 938 | p += ssh1_read_bignum(p, &key->p); /* p */ |
| 939 | p += ssh1_read_bignum(p, &key->q); /* q */ |
| 940 | commentlen = GET_32BIT(p); |
| 941 | comment = smalloc(commentlen+1); |
| 942 | if (comment) { |
| 943 | memcpy(comment, p + 4, commentlen); |
| 944 | comment[commentlen] = '\0'; |
| 945 | key->comment = comment; |
| 946 | } |
| 947 | PUT_32BIT(ret, 1); |
| 948 | ret[4] = SSH_AGENT_FAILURE; |
| 949 | if (add234(rsakeys, key) == key) { |
| 950 | keylist_update(); |
| 951 | ret[4] = SSH_AGENT_SUCCESS; |
| 952 | } else { |
| 953 | freersakey(key); |
| 954 | sfree(key); |
| 955 | } |
| 956 | } |
| 957 | break; |
| 958 | case SSH2_AGENTC_ADD_IDENTITY: |
| 959 | /* |
| 960 | * Add to the list and return SSH_AGENT_SUCCESS, or |
| 961 | * SSH_AGENT_FAILURE if the key was malformed. |
| 962 | */ |
| 963 | { |
| 964 | struct ssh2_userkey *key; |
| 965 | char *comment, *alg; |
| 966 | int alglen, commlen; |
| 967 | int bloblen; |
| 968 | |
| 969 | key = smalloc(sizeof(struct ssh2_userkey)); |
| 970 | |
| 971 | alglen = GET_32BIT(p); |
| 972 | p += 4; |
| 973 | alg = p; |
| 974 | p += alglen; |
| 975 | /* Add further algorithm names here. */ |
| 976 | if (alglen == 7 && !memcmp(alg, "ssh-rsa", 7)) |
| 977 | key->alg = &ssh_rsa; |
| 978 | else if (alglen == 7 && !memcmp(alg, "ssh-dss", 7)) |
| 979 | key->alg = &ssh_dss; |
| 980 | else { |
| 981 | sfree(key); |
| 982 | goto failure; |
| 983 | } |
| 984 | |
| 985 | bloblen = |
| 986 | GET_32BIT((unsigned char *) msg) - (p - |
| 987 | (unsigned char *) msg - |
| 988 | 4); |
| 989 | key->data = key->alg->openssh_createkey(&p, &bloblen); |
| 990 | if (!key->data) { |
| 991 | sfree(key); |
| 992 | goto failure; |
| 993 | } |
| 994 | commlen = GET_32BIT(p); |
| 995 | p += 4; |
| 996 | |
| 997 | comment = smalloc(commlen + 1); |
| 998 | if (comment) { |
| 999 | memcpy(comment, p, commlen); |
| 1000 | comment[commlen] = '\0'; |
| 1001 | } |
| 1002 | key->comment = comment; |
| 1003 | |
| 1004 | PUT_32BIT(ret, 1); |
| 1005 | ret[4] = SSH_AGENT_FAILURE; |
| 1006 | if (add234(ssh2keys, key) == key) { |
| 1007 | keylist_update(); |
| 1008 | ret[4] = SSH_AGENT_SUCCESS; |
| 1009 | } else { |
| 1010 | key->alg->freekey(key->data); |
| 1011 | sfree(key->comment); |
| 1012 | sfree(key); |
| 1013 | } |
| 1014 | } |
| 1015 | break; |
| 1016 | case SSH1_AGENTC_REMOVE_RSA_IDENTITY: |
| 1017 | /* |
| 1018 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
| 1019 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
| 1020 | * start with. |
| 1021 | */ |
| 1022 | { |
| 1023 | struct RSAKey reqkey, *key; |
| 1024 | |
| 1025 | p += makekey(p, &reqkey, NULL, 0); |
| 1026 | key = find234(rsakeys, &reqkey, NULL); |
| 1027 | freebn(reqkey.exponent); |
| 1028 | freebn(reqkey.modulus); |
| 1029 | PUT_32BIT(ret, 1); |
| 1030 | ret[4] = SSH_AGENT_FAILURE; |
| 1031 | if (key) { |
| 1032 | del234(rsakeys, key); |
| 1033 | keylist_update(); |
| 1034 | freersakey(key); |
| 1035 | sfree(key); |
| 1036 | ret[4] = SSH_AGENT_SUCCESS; |
| 1037 | } |
| 1038 | } |
| 1039 | break; |
| 1040 | case SSH2_AGENTC_REMOVE_IDENTITY: |
| 1041 | /* |
| 1042 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
| 1043 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
| 1044 | * start with. |
| 1045 | */ |
| 1046 | { |
| 1047 | struct ssh2_userkey *key; |
| 1048 | struct blob b; |
| 1049 | |
| 1050 | b.len = GET_32BIT(p); |
| 1051 | p += 4; |
| 1052 | b.blob = p; |
| 1053 | p += b.len; |
| 1054 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
| 1055 | if (!key) |
| 1056 | goto failure; |
| 1057 | |
| 1058 | PUT_32BIT(ret, 1); |
| 1059 | ret[4] = SSH_AGENT_FAILURE; |
| 1060 | if (key) { |
| 1061 | del234(ssh2keys, key); |
| 1062 | keylist_update(); |
| 1063 | key->alg->freekey(key->data); |
| 1064 | sfree(key); |
| 1065 | ret[4] = SSH_AGENT_SUCCESS; |
| 1066 | } |
| 1067 | } |
| 1068 | break; |
| 1069 | case SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES: |
| 1070 | /* |
| 1071 | * Remove all SSH1 keys. Always returns success. |
| 1072 | */ |
| 1073 | { |
| 1074 | struct RSAKey *rkey; |
| 1075 | |
| 1076 | while ((rkey = index234(rsakeys, 0)) != NULL) { |
| 1077 | del234(rsakeys, rkey); |
| 1078 | freersakey(rkey); |
| 1079 | sfree(rkey); |
| 1080 | } |
| 1081 | keylist_update(); |
| 1082 | |
| 1083 | PUT_32BIT(ret, 1); |
| 1084 | ret[4] = SSH_AGENT_SUCCESS; |
| 1085 | } |
| 1086 | break; |
| 1087 | case SSH2_AGENTC_REMOVE_ALL_IDENTITIES: |
| 1088 | /* |
| 1089 | * Remove all SSH2 keys. Always returns success. |
| 1090 | */ |
| 1091 | { |
| 1092 | struct ssh2_userkey *skey; |
| 1093 | |
| 1094 | while ((skey = index234(ssh2keys, 0)) != NULL) { |
| 1095 | del234(ssh2keys, skey); |
| 1096 | skey->alg->freekey(skey->data); |
| 1097 | sfree(skey); |
| 1098 | } |
| 1099 | keylist_update(); |
| 1100 | |
| 1101 | PUT_32BIT(ret, 1); |
| 1102 | ret[4] = SSH_AGENT_SUCCESS; |
| 1103 | } |
| 1104 | break; |
| 1105 | default: |
| 1106 | failure: |
| 1107 | /* |
| 1108 | * Unrecognised message. Return SSH_AGENT_FAILURE. |
| 1109 | */ |
| 1110 | PUT_32BIT(ret, 1); |
| 1111 | ret[4] = SSH_AGENT_FAILURE; |
| 1112 | break; |
| 1113 | } |
| 1114 | } |
| 1115 | |
| 1116 | /* |
| 1117 | * Key comparison function for the 2-3-4 tree of RSA keys. |
| 1118 | */ |
| 1119 | static int cmpkeys_rsa(void *av, void *bv) |
| 1120 | { |
| 1121 | struct RSAKey *a = (struct RSAKey *) av; |
| 1122 | struct RSAKey *b = (struct RSAKey *) bv; |
| 1123 | Bignum am, bm; |
| 1124 | int alen, blen; |
| 1125 | |
| 1126 | am = a->modulus; |
| 1127 | bm = b->modulus; |
| 1128 | /* |
| 1129 | * Compare by length of moduli. |
| 1130 | */ |
| 1131 | alen = bignum_bitcount(am); |
| 1132 | blen = bignum_bitcount(bm); |
| 1133 | if (alen > blen) |
| 1134 | return +1; |
| 1135 | else if (alen < blen) |
| 1136 | return -1; |
| 1137 | /* |
| 1138 | * Now compare by moduli themselves. |
| 1139 | */ |
| 1140 | alen = (alen + 7) / 8; /* byte count */ |
| 1141 | while (alen-- > 0) { |
| 1142 | int abyte, bbyte; |
| 1143 | abyte = bignum_byte(am, alen); |
| 1144 | bbyte = bignum_byte(bm, alen); |
| 1145 | if (abyte > bbyte) |
| 1146 | return +1; |
| 1147 | else if (abyte < bbyte) |
| 1148 | return -1; |
| 1149 | } |
| 1150 | /* |
| 1151 | * Give up. |
| 1152 | */ |
| 1153 | return 0; |
| 1154 | } |
| 1155 | |
| 1156 | /* |
| 1157 | * Key comparison function for the 2-3-4 tree of SSH2 keys. |
| 1158 | */ |
| 1159 | static int cmpkeys_ssh2(void *av, void *bv) |
| 1160 | { |
| 1161 | struct ssh2_userkey *a = (struct ssh2_userkey *) av; |
| 1162 | struct ssh2_userkey *b = (struct ssh2_userkey *) bv; |
| 1163 | int i; |
| 1164 | int alen, blen; |
| 1165 | unsigned char *ablob, *bblob; |
| 1166 | int c; |
| 1167 | |
| 1168 | /* |
| 1169 | * Compare purely by public blob. |
| 1170 | */ |
| 1171 | ablob = a->alg->public_blob(a->data, &alen); |
| 1172 | bblob = b->alg->public_blob(b->data, &blen); |
| 1173 | |
| 1174 | c = 0; |
| 1175 | for (i = 0; i < alen && i < blen; i++) { |
| 1176 | if (ablob[i] < bblob[i]) { |
| 1177 | c = -1; |
| 1178 | break; |
| 1179 | } else if (ablob[i] > bblob[i]) { |
| 1180 | c = +1; |
| 1181 | break; |
| 1182 | } |
| 1183 | } |
| 1184 | if (c == 0 && i < alen) |
| 1185 | c = +1; /* a is longer */ |
| 1186 | if (c == 0 && i < blen) |
| 1187 | c = -1; /* a is longer */ |
| 1188 | |
| 1189 | sfree(ablob); |
| 1190 | sfree(bblob); |
| 1191 | |
| 1192 | return c; |
| 1193 | } |
| 1194 | |
| 1195 | /* |
| 1196 | * Key comparison function for looking up a blob in the 2-3-4 tree |
| 1197 | * of SSH2 keys. |
| 1198 | */ |
| 1199 | static int cmpkeys_ssh2_asymm(void *av, void *bv) |
| 1200 | { |
| 1201 | struct blob *a = (struct blob *) av; |
| 1202 | struct ssh2_userkey *b = (struct ssh2_userkey *) bv; |
| 1203 | int i; |
| 1204 | int alen, blen; |
| 1205 | unsigned char *ablob, *bblob; |
| 1206 | int c; |
| 1207 | |
| 1208 | /* |
| 1209 | * Compare purely by public blob. |
| 1210 | */ |
| 1211 | ablob = a->blob; |
| 1212 | alen = a->len; |
| 1213 | bblob = b->alg->public_blob(b->data, &blen); |
| 1214 | |
| 1215 | c = 0; |
| 1216 | for (i = 0; i < alen && i < blen; i++) { |
| 1217 | if (ablob[i] < bblob[i]) { |
| 1218 | c = -1; |
| 1219 | break; |
| 1220 | } else if (ablob[i] > bblob[i]) { |
| 1221 | c = +1; |
| 1222 | break; |
| 1223 | } |
| 1224 | } |
| 1225 | if (c == 0 && i < alen) |
| 1226 | c = +1; /* a is longer */ |
| 1227 | if (c == 0 && i < blen) |
| 1228 | c = -1; /* a is longer */ |
| 1229 | |
| 1230 | sfree(bblob); |
| 1231 | |
| 1232 | return c; |
| 1233 | } |
| 1234 | |
| 1235 | /* |
| 1236 | * Prompt for a key file to add, and add it. |
| 1237 | */ |
| 1238 | static void prompt_add_keyfile(void) |
| 1239 | { |
| 1240 | OPENFILENAME of; |
| 1241 | char filename[FILENAME_MAX]; |
| 1242 | char *filelist = smalloc(8192); |
| 1243 | char *filewalker; |
| 1244 | int n, dirlen; |
| 1245 | |
| 1246 | memset(&of, 0, sizeof(of)); |
| 1247 | #ifdef OPENFILENAME_SIZE_VERSION_400 |
| 1248 | of.lStructSize = OPENFILENAME_SIZE_VERSION_400; |
| 1249 | #else |
| 1250 | of.lStructSize = sizeof(of); |
| 1251 | #endif |
| 1252 | of.hwndOwner = main_hwnd; |
| 1253 | of.lpstrFilter = "PuTTY Private Key Files\0*.PPK\0AllFiles\0*\0\0\0"; |
| 1254 | of.lpstrCustomFilter = NULL; |
| 1255 | of.nFilterIndex = 1; |
| 1256 | of.lpstrFile = filelist; |
| 1257 | *filelist = '\0'; |
| 1258 | of.nMaxFile = FILENAME_MAX; |
| 1259 | of.lpstrFileTitle = NULL; |
| 1260 | of.lpstrInitialDir = NULL; |
| 1261 | of.lpstrTitle = "Select Private Key File"; |
| 1262 | of.Flags = OFN_ALLOWMULTISELECT | OFN_EXPLORER; |
| 1263 | if (GetOpenFileName(&of)) { |
| 1264 | if(strlen(filelist) > of.nFileOffset) |
| 1265 | /* Only one filename returned? */ |
| 1266 | add_keyfile(filelist); |
| 1267 | else { |
| 1268 | /* we are returned a bunch of strings, end to |
| 1269 | * end. first string is the directory, the |
| 1270 | * rest the filenames. terminated with an |
| 1271 | * empty string. |
| 1272 | */ |
| 1273 | filewalker = filelist; |
| 1274 | dirlen = strlen(filewalker); |
| 1275 | if(dirlen > FILENAME_MAX - 8) return; |
| 1276 | memcpy(filename, filewalker, dirlen); |
| 1277 | |
| 1278 | filewalker += dirlen + 1; |
| 1279 | filename[dirlen++] = '\\'; |
| 1280 | |
| 1281 | /* then go over names one by one */ |
| 1282 | for(;;) { |
| 1283 | n = strlen(filewalker) + 1; |
| 1284 | /* end of the list */ |
| 1285 | if(n == 1) |
| 1286 | break; |
| 1287 | /* too big, shouldn't happen */ |
| 1288 | if(n + dirlen > FILENAME_MAX) |
| 1289 | break; |
| 1290 | |
| 1291 | memcpy(filename + dirlen, filewalker, n); |
| 1292 | filewalker += n; |
| 1293 | |
| 1294 | add_keyfile(filename); |
| 1295 | } |
| 1296 | } |
| 1297 | |
| 1298 | keylist_update(); |
| 1299 | forget_passphrases(); |
| 1300 | } |
| 1301 | sfree(filelist); |
| 1302 | } |
| 1303 | |
| 1304 | /* |
| 1305 | * Dialog-box function for the key list box. |
| 1306 | */ |
| 1307 | static int CALLBACK KeyListProc(HWND hwnd, UINT msg, |
| 1308 | WPARAM wParam, LPARAM lParam) |
| 1309 | { |
| 1310 | struct RSAKey *rkey; |
| 1311 | struct ssh2_userkey *skey; |
| 1312 | |
| 1313 | switch (msg) { |
| 1314 | case WM_INITDIALOG: |
| 1315 | /* |
| 1316 | * Centre the window. |
| 1317 | */ |
| 1318 | { /* centre the window */ |
| 1319 | RECT rs, rd; |
| 1320 | HWND hw; |
| 1321 | |
| 1322 | hw = GetDesktopWindow(); |
| 1323 | if (GetWindowRect(hw, &rs) && GetWindowRect(hwnd, &rd)) |
| 1324 | MoveWindow(hwnd, |
| 1325 | (rs.right + rs.left + rd.left - rd.right) / 2, |
| 1326 | (rs.bottom + rs.top + rd.top - rd.bottom) / 2, |
| 1327 | rd.right - rd.left, rd.bottom - rd.top, TRUE); |
| 1328 | } |
| 1329 | |
| 1330 | if (help_path) |
| 1331 | SetWindowLong(hwnd, GWL_EXSTYLE, |
| 1332 | GetWindowLong(hwnd, GWL_EXSTYLE) | WS_EX_CONTEXTHELP); |
| 1333 | else { |
| 1334 | HWND item = GetDlgItem(hwnd, 103); /* the Help button */ |
| 1335 | if (item) |
| 1336 | DestroyWindow(item); |
| 1337 | } |
| 1338 | requested_help = FALSE; |
| 1339 | |
| 1340 | keylist = hwnd; |
| 1341 | { |
| 1342 | static int tabs[] = { 35, 60, 210 }; |
| 1343 | SendDlgItemMessage(hwnd, 100, LB_SETTABSTOPS, |
| 1344 | sizeof(tabs) / sizeof(*tabs), |
| 1345 | (LPARAM) tabs); |
| 1346 | } |
| 1347 | keylist_update(); |
| 1348 | return 0; |
| 1349 | case WM_COMMAND: |
| 1350 | switch (LOWORD(wParam)) { |
| 1351 | case IDOK: |
| 1352 | case IDCANCEL: |
| 1353 | keylist = NULL; |
| 1354 | DestroyWindow(hwnd); |
| 1355 | return 0; |
| 1356 | case 101: /* add key */ |
| 1357 | if (HIWORD(wParam) == BN_CLICKED || |
| 1358 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
| 1359 | if (passphrase_box) { |
| 1360 | MessageBeep(MB_ICONERROR); |
| 1361 | SetForegroundWindow(passphrase_box); |
| 1362 | break; |
| 1363 | } |
| 1364 | prompt_add_keyfile(); |
| 1365 | } |
| 1366 | return 0; |
| 1367 | case 102: /* remove key */ |
| 1368 | if (HIWORD(wParam) == BN_CLICKED || |
| 1369 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
| 1370 | int i; |
| 1371 | int rCount, sCount; |
| 1372 | int *selectedArray; |
| 1373 | |
| 1374 | /* our counter within the array of selected items */ |
| 1375 | int itemNum; |
| 1376 | |
| 1377 | /* get the number of items selected in the list */ |
| 1378 | int numSelected = |
| 1379 | SendDlgItemMessage(hwnd, 100, LB_GETSELCOUNT, 0, 0); |
| 1380 | |
| 1381 | /* none selected? that was silly */ |
| 1382 | if (numSelected == 0) { |
| 1383 | MessageBeep(0); |
| 1384 | break; |
| 1385 | } |
| 1386 | |
| 1387 | /* get item indices in an array */ |
| 1388 | selectedArray = smalloc(numSelected * sizeof(int)); |
| 1389 | SendDlgItemMessage(hwnd, 100, LB_GETSELITEMS, |
| 1390 | numSelected, (WPARAM)selectedArray); |
| 1391 | |
| 1392 | itemNum = numSelected - 1; |
| 1393 | rCount = count234(rsakeys); |
| 1394 | sCount = count234(ssh2keys); |
| 1395 | |
| 1396 | /* go through the non-rsakeys until we've covered them all, |
| 1397 | * and/or we're out of selected items to check. note that |
| 1398 | * we go *backwards*, to avoid complications from deleting |
| 1399 | * things hence altering the offset of subsequent items |
| 1400 | */ |
| 1401 | for (i = sCount - 1; (itemNum >= 0) && (i >= 0); i--) { |
| 1402 | skey = index234(ssh2keys, i); |
| 1403 | |
| 1404 | if (selectedArray[itemNum] == rCount + i) { |
| 1405 | del234(ssh2keys, skey); |
| 1406 | skey->alg->freekey(skey->data); |
| 1407 | sfree(skey); |
| 1408 | itemNum--; |
| 1409 | } |
| 1410 | } |
| 1411 | |
| 1412 | /* do the same for the rsa keys */ |
| 1413 | for (i = rCount - 1; (itemNum >= 0) && (i >= 0); i--) { |
| 1414 | rkey = index234(rsakeys, i); |
| 1415 | |
| 1416 | if(selectedArray[itemNum] == i) { |
| 1417 | del234(rsakeys, rkey); |
| 1418 | freersakey(rkey); |
| 1419 | sfree(rkey); |
| 1420 | itemNum--; |
| 1421 | } |
| 1422 | } |
| 1423 | |
| 1424 | sfree(selectedArray); |
| 1425 | keylist_update(); |
| 1426 | } |
| 1427 | return 0; |
| 1428 | case 103: /* help */ |
| 1429 | if (HIWORD(wParam) == BN_CLICKED || |
| 1430 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
| 1431 | if (help_path) { |
| 1432 | WinHelp(main_hwnd, help_path, HELP_COMMAND, |
| 1433 | (DWORD)"JI(`',`pageant.general')"); |
| 1434 | requested_help = TRUE; |
| 1435 | } |
| 1436 | } |
| 1437 | return 0; |
| 1438 | } |
| 1439 | return 0; |
| 1440 | case WM_HELP: |
| 1441 | if (help_path) { |
| 1442 | int id = ((LPHELPINFO)lParam)->iCtrlId; |
| 1443 | char *cmd = NULL; |
| 1444 | switch (id) { |
| 1445 | case 100: cmd = "JI(`',`pageant.keylist')"; break; |
| 1446 | case 101: cmd = "JI(`',`pageant.addkey')"; break; |
| 1447 | case 102: cmd = "JI(`',`pageant.remkey')"; break; |
| 1448 | } |
| 1449 | if (cmd) { |
| 1450 | WinHelp(main_hwnd, help_path, HELP_COMMAND, (DWORD)cmd); |
| 1451 | requested_help = TRUE; |
| 1452 | } else { |
| 1453 | MessageBeep(0); |
| 1454 | } |
| 1455 | } |
| 1456 | break; |
| 1457 | case WM_CLOSE: |
| 1458 | keylist = NULL; |
| 1459 | DestroyWindow(hwnd); |
| 1460 | return 0; |
| 1461 | } |
| 1462 | return 0; |
| 1463 | } |
| 1464 | |
| 1465 | /* Set up a system tray icon */ |
| 1466 | static BOOL AddTrayIcon(HWND hwnd) |
| 1467 | { |
| 1468 | BOOL res; |
| 1469 | NOTIFYICONDATA tnid; |
| 1470 | HICON hicon; |
| 1471 | |
| 1472 | #ifdef NIM_SETVERSION |
| 1473 | tnid.uVersion = 0; |
| 1474 | res = Shell_NotifyIcon(NIM_SETVERSION, &tnid); |
| 1475 | #endif |
| 1476 | |
| 1477 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
| 1478 | tnid.hWnd = hwnd; |
| 1479 | tnid.uID = 1; /* unique within this systray use */ |
| 1480 | tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; |
| 1481 | tnid.uCallbackMessage = WM_SYSTRAY; |
| 1482 | tnid.hIcon = hicon = LoadIcon(instance, MAKEINTRESOURCE(201)); |
| 1483 | strcpy(tnid.szTip, "Pageant (PuTTY authentication agent)"); |
| 1484 | |
| 1485 | res = Shell_NotifyIcon(NIM_ADD, &tnid); |
| 1486 | |
| 1487 | if (hicon) DestroyIcon(hicon); |
| 1488 | |
| 1489 | return res; |
| 1490 | } |
| 1491 | |
| 1492 | /* Update the saved-sessions menu. */ |
| 1493 | static void update_sessions(void) |
| 1494 | { |
| 1495 | int num_entries; |
| 1496 | HKEY hkey; |
| 1497 | TCHAR buf[MAX_PATH + 1]; |
| 1498 | MENUITEMINFO mii; |
| 1499 | |
| 1500 | int index_key, index_menu; |
| 1501 | |
| 1502 | if (!putty_path) |
| 1503 | return; |
| 1504 | |
| 1505 | if(ERROR_SUCCESS != RegOpenKey(HKEY_CURRENT_USER, PUTTY_REGKEY, &hkey)) |
| 1506 | return; |
| 1507 | |
| 1508 | for(num_entries = GetMenuItemCount(session_menu); |
| 1509 | num_entries > initial_menuitems_count; |
| 1510 | num_entries--) |
| 1511 | RemoveMenu(session_menu, 0, MF_BYPOSITION); |
| 1512 | |
| 1513 | index_key = 0; |
| 1514 | index_menu = 0; |
| 1515 | |
| 1516 | while(ERROR_SUCCESS == RegEnumKey(hkey, index_key, buf, MAX_PATH)) { |
| 1517 | TCHAR session_name[MAX_PATH + 1]; |
| 1518 | unmungestr(buf, session_name, MAX_PATH); |
| 1519 | if(strcmp(buf, PUTTY_DEFAULT) != 0) { |
| 1520 | memset(&mii, 0, sizeof(mii)); |
| 1521 | mii.cbSize = sizeof(mii); |
| 1522 | mii.fMask = MIIM_TYPE | MIIM_STATE | MIIM_ID; |
| 1523 | mii.fType = MFT_STRING; |
| 1524 | mii.fState = MFS_ENABLED; |
| 1525 | mii.wID = (index_menu * 16) + IDM_SESSIONS_BASE; |
| 1526 | mii.dwTypeData = session_name; |
| 1527 | InsertMenuItem(session_menu, index_menu, TRUE, &mii); |
| 1528 | index_menu++; |
| 1529 | } |
| 1530 | index_key++; |
| 1531 | } |
| 1532 | |
| 1533 | RegCloseKey(hkey); |
| 1534 | |
| 1535 | if(index_menu == 0) { |
| 1536 | mii.cbSize = sizeof(mii); |
| 1537 | mii.fMask = MIIM_TYPE | MIIM_STATE; |
| 1538 | mii.fType = MFT_STRING; |
| 1539 | mii.fState = MFS_GRAYED; |
| 1540 | mii.dwTypeData = _T("(No sessions)"); |
| 1541 | InsertMenuItem(session_menu, index_menu, TRUE, &mii); |
| 1542 | } |
| 1543 | } |
| 1544 | |
| 1545 | static LRESULT CALLBACK WndProc(HWND hwnd, UINT message, |
| 1546 | WPARAM wParam, LPARAM lParam) |
| 1547 | { |
| 1548 | int ret; |
| 1549 | static int menuinprogress; |
| 1550 | static UINT msgTaskbarCreated = 0; |
| 1551 | |
| 1552 | switch (message) { |
| 1553 | case WM_CREATE: |
| 1554 | msgTaskbarCreated = RegisterWindowMessage(_T("TaskbarCreated")); |
| 1555 | break; |
| 1556 | default: |
| 1557 | if (message==msgTaskbarCreated) { |
| 1558 | /* |
| 1559 | * Explorer has been restarted, so the tray icon will |
| 1560 | * have been lost. |
| 1561 | */ |
| 1562 | AddTrayIcon(hwnd); |
| 1563 | } |
| 1564 | break; |
| 1565 | |
| 1566 | case WM_SYSTRAY: |
| 1567 | if (lParam == WM_RBUTTONUP) { |
| 1568 | POINT cursorpos; |
| 1569 | GetCursorPos(&cursorpos); |
| 1570 | PostMessage(hwnd, WM_SYSTRAY2, cursorpos.x, cursorpos.y); |
| 1571 | } else if (lParam == WM_LBUTTONDBLCLK) { |
| 1572 | /* Equivalent to IDM_VIEWKEYS. */ |
| 1573 | PostMessage(hwnd, WM_COMMAND, IDM_VIEWKEYS, 0); |
| 1574 | } |
| 1575 | break; |
| 1576 | case WM_SYSTRAY2: |
| 1577 | if (!menuinprogress) { |
| 1578 | menuinprogress = 1; |
| 1579 | update_sessions(); |
| 1580 | SetForegroundWindow(hwnd); |
| 1581 | ret = TrackPopupMenu(systray_menu, |
| 1582 | TPM_RIGHTALIGN | TPM_BOTTOMALIGN | |
| 1583 | TPM_RIGHTBUTTON, |
| 1584 | wParam, lParam, 0, hwnd, NULL); |
| 1585 | menuinprogress = 0; |
| 1586 | } |
| 1587 | break; |
| 1588 | case WM_COMMAND: |
| 1589 | case WM_SYSCOMMAND: |
| 1590 | switch (wParam & ~0xF) { /* low 4 bits reserved to Windows */ |
| 1591 | case IDM_PUTTY: |
| 1592 | if((int)ShellExecute(hwnd, NULL, putty_path, _T(""), _T(""), |
| 1593 | SW_SHOW) <= 32) { |
| 1594 | MessageBox(NULL, "Unable to execute PuTTY!", |
| 1595 | "Error", MB_OK | MB_ICONERROR); |
| 1596 | } |
| 1597 | break; |
| 1598 | case IDM_CLOSE: |
| 1599 | if (passphrase_box) |
| 1600 | SendMessage(passphrase_box, WM_CLOSE, 0, 0); |
| 1601 | SendMessage(hwnd, WM_CLOSE, 0, 0); |
| 1602 | break; |
| 1603 | case IDM_VIEWKEYS: |
| 1604 | if (!keylist) { |
| 1605 | keylist = CreateDialog(instance, MAKEINTRESOURCE(211), |
| 1606 | NULL, KeyListProc); |
| 1607 | ShowWindow(keylist, SW_SHOWNORMAL); |
| 1608 | } |
| 1609 | /* |
| 1610 | * Sometimes the window comes up minimised / hidden for |
| 1611 | * no obvious reason. Prevent this. This also brings it |
| 1612 | * to the front if it's already present (the user |
| 1613 | * selected View Keys because they wanted to _see_ the |
| 1614 | * thing). |
| 1615 | */ |
| 1616 | SetForegroundWindow(keylist); |
| 1617 | SetWindowPos(keylist, HWND_TOP, 0, 0, 0, 0, |
| 1618 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
| 1619 | break; |
| 1620 | case IDM_ADDKEY: |
| 1621 | if (passphrase_box) { |
| 1622 | MessageBeep(MB_ICONERROR); |
| 1623 | SetForegroundWindow(passphrase_box); |
| 1624 | break; |
| 1625 | } |
| 1626 | prompt_add_keyfile(); |
| 1627 | break; |
| 1628 | case IDM_ABOUT: |
| 1629 | if (!aboutbox) { |
| 1630 | aboutbox = CreateDialog(instance, MAKEINTRESOURCE(213), |
| 1631 | NULL, AboutProc); |
| 1632 | ShowWindow(aboutbox, SW_SHOWNORMAL); |
| 1633 | /* |
| 1634 | * Sometimes the window comes up minimised / hidden |
| 1635 | * for no obvious reason. Prevent this. |
| 1636 | */ |
| 1637 | SetForegroundWindow(aboutbox); |
| 1638 | SetWindowPos(aboutbox, HWND_TOP, 0, 0, 0, 0, |
| 1639 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
| 1640 | } |
| 1641 | break; |
| 1642 | case IDM_HELP: |
| 1643 | if (help_path) { |
| 1644 | WinHelp(main_hwnd, help_path, HELP_COMMAND, |
| 1645 | (DWORD)"JI(`',`pageant.general')"); |
| 1646 | requested_help = TRUE; |
| 1647 | } |
| 1648 | break; |
| 1649 | default: |
| 1650 | { |
| 1651 | if(wParam >= IDM_SESSIONS_BASE && wParam <= IDM_SESSIONS_MAX) { |
| 1652 | MENUITEMINFO mii; |
| 1653 | TCHAR buf[MAX_PATH + 1]; |
| 1654 | TCHAR param[MAX_PATH + 1]; |
| 1655 | memset(&mii, 0, sizeof(mii)); |
| 1656 | mii.cbSize = sizeof(mii); |
| 1657 | mii.fMask = MIIM_TYPE; |
| 1658 | mii.cch = MAX_PATH; |
| 1659 | mii.dwTypeData = buf; |
| 1660 | GetMenuItemInfo(session_menu, wParam, FALSE, &mii); |
| 1661 | strcpy(param, "@"); |
| 1662 | strcat(param, mii.dwTypeData); |
| 1663 | if((int)ShellExecute(hwnd, NULL, putty_path, param, |
| 1664 | _T(""), SW_SHOW) <= 32) { |
| 1665 | MessageBox(NULL, "Unable to execute PuTTY!", "Error", |
| 1666 | MB_OK | MB_ICONERROR); |
| 1667 | } |
| 1668 | } |
| 1669 | } |
| 1670 | break; |
| 1671 | } |
| 1672 | break; |
| 1673 | case WM_DESTROY: |
| 1674 | if (requested_help) { |
| 1675 | WinHelp(main_hwnd, help_path, HELP_QUIT, 0); |
| 1676 | requested_help = FALSE; |
| 1677 | } |
| 1678 | PostQuitMessage(0); |
| 1679 | return 0; |
| 1680 | case WM_COPYDATA: |
| 1681 | { |
| 1682 | COPYDATASTRUCT *cds; |
| 1683 | char *mapname; |
| 1684 | void *p; |
| 1685 | HANDLE filemap; |
| 1686 | #ifndef NO_SECURITY |
| 1687 | HANDLE proc; |
| 1688 | PSID mapowner, procowner; |
| 1689 | PSECURITY_DESCRIPTOR psd1 = NULL, psd2 = NULL; |
| 1690 | #endif |
| 1691 | int ret = 0; |
| 1692 | |
| 1693 | cds = (COPYDATASTRUCT *) lParam; |
| 1694 | if (cds->dwData != AGENT_COPYDATA_ID) |
| 1695 | return 0; /* not our message, mate */ |
| 1696 | mapname = (char *) cds->lpData; |
| 1697 | if (mapname[cds->cbData - 1] != '\0') |
| 1698 | return 0; /* failure to be ASCIZ! */ |
| 1699 | #ifdef DEBUG_IPC |
| 1700 | debug(("mapname is :%s:\n", mapname)); |
| 1701 | #endif |
| 1702 | filemap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, mapname); |
| 1703 | #ifdef DEBUG_IPC |
| 1704 | debug(("filemap is %p\n", filemap)); |
| 1705 | #endif |
| 1706 | if (filemap != NULL && filemap != INVALID_HANDLE_VALUE) { |
| 1707 | #ifndef NO_SECURITY |
| 1708 | int rc; |
| 1709 | if (has_security) { |
| 1710 | if ((proc = OpenProcess(MAXIMUM_ALLOWED, FALSE, |
| 1711 | GetCurrentProcessId())) == |
| 1712 | NULL) { |
| 1713 | #ifdef DEBUG_IPC |
| 1714 | debug(("couldn't get handle for process\n")); |
| 1715 | #endif |
| 1716 | return 0; |
| 1717 | } |
| 1718 | if (getsecurityinfo(proc, SE_KERNEL_OBJECT, |
| 1719 | OWNER_SECURITY_INFORMATION, |
| 1720 | &procowner, NULL, NULL, NULL, |
| 1721 | &psd2) != ERROR_SUCCESS) { |
| 1722 | #ifdef DEBUG_IPC |
| 1723 | debug(("couldn't get owner info for process\n")); |
| 1724 | #endif |
| 1725 | CloseHandle(proc); |
| 1726 | return 0; /* unable to get security info */ |
| 1727 | } |
| 1728 | CloseHandle(proc); |
| 1729 | if ((rc = getsecurityinfo(filemap, SE_KERNEL_OBJECT, |
| 1730 | OWNER_SECURITY_INFORMATION, |
| 1731 | &mapowner, NULL, NULL, NULL, |
| 1732 | &psd1) != ERROR_SUCCESS)) { |
| 1733 | #ifdef DEBUG_IPC |
| 1734 | debug( |
| 1735 | ("couldn't get owner info for filemap: %d\n", |
| 1736 | rc)); |
| 1737 | #endif |
| 1738 | return 0; |
| 1739 | } |
| 1740 | #ifdef DEBUG_IPC |
| 1741 | debug(("got security stuff\n")); |
| 1742 | #endif |
| 1743 | if (!EqualSid(mapowner, procowner)) |
| 1744 | return 0; /* security ID mismatch! */ |
| 1745 | #ifdef DEBUG_IPC |
| 1746 | debug(("security stuff matched\n")); |
| 1747 | #endif |
| 1748 | LocalFree(psd1); |
| 1749 | LocalFree(psd2); |
| 1750 | } else { |
| 1751 | #ifdef DEBUG_IPC |
| 1752 | debug(("security APIs not present\n")); |
| 1753 | #endif |
| 1754 | } |
| 1755 | #endif |
| 1756 | p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0); |
| 1757 | #ifdef DEBUG_IPC |
| 1758 | debug(("p is %p\n", p)); |
| 1759 | { |
| 1760 | int i; |
| 1761 | for (i = 0; i < 5; i++) |
| 1762 | debug( |
| 1763 | ("p[%d]=%02x\n", i, |
| 1764 | ((unsigned char *) p)[i]));} |
| 1765 | #endif |
| 1766 | answer_msg(p); |
| 1767 | ret = 1; |
| 1768 | UnmapViewOfFile(p); |
| 1769 | } |
| 1770 | CloseHandle(filemap); |
| 1771 | return ret; |
| 1772 | } |
| 1773 | } |
| 1774 | |
| 1775 | return DefWindowProc(hwnd, message, wParam, lParam); |
| 1776 | } |
| 1777 | |
| 1778 | /* |
| 1779 | * Fork and Exec the command in cmdline. [DBW] |
| 1780 | */ |
| 1781 | void spawn_cmd(char *cmdline, char * args, int show) |
| 1782 | { |
| 1783 | if (ShellExecute(NULL, _T("open"), cmdline, |
| 1784 | args, NULL, show) <= (HINSTANCE) 32) { |
| 1785 | char *msg; |
| 1786 | msg = dupprintf("Failed to run \"%.100s\", Error: %d", cmdline, |
| 1787 | (int)GetLastError()); |
| 1788 | MessageBox(NULL, msg, APPNAME, MB_OK | MB_ICONEXCLAMATION); |
| 1789 | sfree(msg); |
| 1790 | } |
| 1791 | } |
| 1792 | |
| 1793 | void cleanup_exit(int code) { exit(code); } |
| 1794 | |
| 1795 | int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) |
| 1796 | { |
| 1797 | WNDCLASS wndclass; |
| 1798 | MSG msg; |
| 1799 | OSVERSIONINFO osi; |
| 1800 | HMODULE advapi; |
| 1801 | char *command = NULL; |
| 1802 | int added_keys = 0; |
| 1803 | int argc, i; |
| 1804 | char **argv, **argstart; |
| 1805 | |
| 1806 | /* |
| 1807 | * Determine whether we're an NT system (should have security |
| 1808 | * APIs) or a non-NT system (don't do security). |
| 1809 | */ |
| 1810 | memset(&osi, 0, sizeof(OSVERSIONINFO)); |
| 1811 | osi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); |
| 1812 | if (GetVersionEx(&osi) && osi.dwPlatformId == VER_PLATFORM_WIN32_NT) { |
| 1813 | has_security = TRUE; |
| 1814 | } else |
| 1815 | has_security = FALSE; |
| 1816 | |
| 1817 | if (has_security) { |
| 1818 | #ifndef NO_SECURITY |
| 1819 | /* |
| 1820 | * Attempt to get the security API we need. |
| 1821 | */ |
| 1822 | advapi = LoadLibrary("ADVAPI32.DLL"); |
| 1823 | getsecurityinfo = |
| 1824 | (gsi_fn_t) GetProcAddress(advapi, "GetSecurityInfo"); |
| 1825 | if (!getsecurityinfo) { |
| 1826 | MessageBox(NULL, |
| 1827 | "Unable to access security APIs. Pageant will\n" |
| 1828 | "not run, in case it causes a security breach.", |
| 1829 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
| 1830 | return 1; |
| 1831 | } |
| 1832 | #else |
| 1833 | MessageBox(NULL, |
| 1834 | "This program has been compiled for Win9X and will\n" |
| 1835 | "not run on NT, in case it causes a security breach.", |
| 1836 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
| 1837 | return 1; |
| 1838 | #endif |
| 1839 | } else |
| 1840 | advapi = NULL; |
| 1841 | |
| 1842 | instance = inst; |
| 1843 | |
| 1844 | /* |
| 1845 | * See if we can find our Help file. |
| 1846 | */ |
| 1847 | { |
| 1848 | char b[2048], *p, *q, *r; |
| 1849 | FILE *fp; |
| 1850 | GetModuleFileName(NULL, b, sizeof(b) - 1); |
| 1851 | r = b; |
| 1852 | p = strrchr(b, '\\'); |
| 1853 | if (p && p >= r) r = p+1; |
| 1854 | q = strrchr(b, ':'); |
| 1855 | if (q && q >= r) r = q+1; |
| 1856 | strcpy(r, "putty.hlp"); |
| 1857 | if ( (fp = fopen(b, "r")) != NULL) { |
| 1858 | help_path = dupstr(b); |
| 1859 | fclose(fp); |
| 1860 | } else |
| 1861 | help_path = NULL; |
| 1862 | } |
| 1863 | |
| 1864 | /* |
| 1865 | * Look for the PuTTY binary (we will enable the saved session |
| 1866 | * submenu if we find it). |
| 1867 | */ |
| 1868 | { |
| 1869 | char b[2048], *p, *q, *r; |
| 1870 | FILE *fp; |
| 1871 | GetModuleFileName(NULL, b, sizeof(b) - 1); |
| 1872 | r = b; |
| 1873 | p = strrchr(b, '\\'); |
| 1874 | if (p && p >= r) r = p+1; |
| 1875 | q = strrchr(b, ':'); |
| 1876 | if (q && q >= r) r = q+1; |
| 1877 | strcpy(r, "putty.exe"); |
| 1878 | if ( (fp = fopen(b, "r")) != NULL) { |
| 1879 | putty_path = dupstr(b); |
| 1880 | fclose(fp); |
| 1881 | } else |
| 1882 | putty_path = NULL; |
| 1883 | } |
| 1884 | |
| 1885 | /* |
| 1886 | * Find out if Pageant is already running. |
| 1887 | */ |
| 1888 | already_running = FALSE; |
| 1889 | if (agent_exists()) |
| 1890 | already_running = TRUE; |
| 1891 | else { |
| 1892 | |
| 1893 | if (!prev) { |
| 1894 | wndclass.style = 0; |
| 1895 | wndclass.lpfnWndProc = WndProc; |
| 1896 | wndclass.cbClsExtra = 0; |
| 1897 | wndclass.cbWndExtra = 0; |
| 1898 | wndclass.hInstance = inst; |
| 1899 | wndclass.hIcon = LoadIcon(inst, MAKEINTRESOURCE(IDI_MAINICON)); |
| 1900 | wndclass.hCursor = LoadCursor(NULL, IDC_IBEAM); |
| 1901 | wndclass.hbrBackground = GetStockObject(BLACK_BRUSH); |
| 1902 | wndclass.lpszMenuName = NULL; |
| 1903 | wndclass.lpszClassName = APPNAME; |
| 1904 | |
| 1905 | RegisterClass(&wndclass); |
| 1906 | } |
| 1907 | |
| 1908 | main_hwnd = keylist = NULL; |
| 1909 | |
| 1910 | main_hwnd = CreateWindow(APPNAME, APPNAME, |
| 1911 | WS_OVERLAPPEDWINDOW | WS_VSCROLL, |
| 1912 | CW_USEDEFAULT, CW_USEDEFAULT, |
| 1913 | 100, 100, NULL, NULL, inst, NULL); |
| 1914 | |
| 1915 | /* Set up a system tray icon */ |
| 1916 | AddTrayIcon(main_hwnd); |
| 1917 | |
| 1918 | /* Accelerators used: nsvkxa */ |
| 1919 | systray_menu = CreatePopupMenu(); |
| 1920 | if (putty_path) { |
| 1921 | session_menu = CreateMenu(); |
| 1922 | AppendMenu(systray_menu, MF_ENABLED, IDM_PUTTY, "&New Session"); |
| 1923 | AppendMenu(systray_menu, MF_POPUP | MF_ENABLED, |
| 1924 | (UINT) session_menu, "&Saved Sessions"); |
| 1925 | AppendMenu(systray_menu, MF_SEPARATOR, 0, 0); |
| 1926 | } |
| 1927 | AppendMenu(systray_menu, MF_ENABLED, IDM_VIEWKEYS, |
| 1928 | "&View Keys"); |
| 1929 | AppendMenu(systray_menu, MF_ENABLED, IDM_ADDKEY, "Add &Key"); |
| 1930 | AppendMenu(systray_menu, MF_SEPARATOR, 0, 0); |
| 1931 | if (help_path) |
| 1932 | AppendMenu(systray_menu, MF_ENABLED, IDM_HELP, "&Help"); |
| 1933 | AppendMenu(systray_menu, MF_ENABLED, IDM_ABOUT, "&About"); |
| 1934 | AppendMenu(systray_menu, MF_SEPARATOR, 0, 0); |
| 1935 | AppendMenu(systray_menu, MF_ENABLED, IDM_CLOSE, "E&xit"); |
| 1936 | initial_menuitems_count = GetMenuItemCount(session_menu); |
| 1937 | |
| 1938 | ShowWindow(main_hwnd, SW_HIDE); |
| 1939 | |
| 1940 | /* |
| 1941 | * Initialise storage for RSA keys. |
| 1942 | */ |
| 1943 | rsakeys = newtree234(cmpkeys_rsa); |
| 1944 | ssh2keys = newtree234(cmpkeys_ssh2); |
| 1945 | |
| 1946 | } |
| 1947 | |
| 1948 | /* |
| 1949 | * Initialise storage for short-term passphrase cache. |
| 1950 | */ |
| 1951 | passphrases = newtree234(NULL); |
| 1952 | |
| 1953 | /* |
| 1954 | * Process the command line and add keys as listed on it. |
| 1955 | */ |
| 1956 | split_into_argv(cmdline, &argc, &argv, &argstart); |
| 1957 | for (i = 0; i < argc; i++) { |
| 1958 | if (!strcmp(argv[i], "-c")) { |
| 1959 | /* |
| 1960 | * If we see `-c', then the rest of the |
| 1961 | * command line should be treated as a |
| 1962 | * command to be spawned. |
| 1963 | */ |
| 1964 | if (i < argc-1) |
| 1965 | command = argstart[i+1]; |
| 1966 | else |
| 1967 | command = ""; |
| 1968 | break; |
| 1969 | } else { |
| 1970 | add_keyfile(argv[i]); |
| 1971 | added_keys = TRUE; |
| 1972 | } |
| 1973 | } |
| 1974 | |
| 1975 | /* |
| 1976 | * Forget any passphrase that we retained while going over |
| 1977 | * command line keyfiles. |
| 1978 | */ |
| 1979 | forget_passphrases(); |
| 1980 | |
| 1981 | if (command) { |
| 1982 | char *args; |
| 1983 | if (command[0] == '"') |
| 1984 | args = strchr(++command, '"'); |
| 1985 | else |
| 1986 | args = strchr(command, ' '); |
| 1987 | if (args) { |
| 1988 | *args++ = 0; |
| 1989 | while(*args && isspace(*args)) args++; |
| 1990 | } |
| 1991 | spawn_cmd(command, args, show); |
| 1992 | } |
| 1993 | |
| 1994 | /* |
| 1995 | * If Pageant was already running, we leave now. If we haven't |
| 1996 | * even taken any auxiliary action (spawned a command or added |
| 1997 | * keys), complain. |
| 1998 | */ |
| 1999 | if (already_running) { |
| 2000 | if (!command && !added_keys) { |
| 2001 | MessageBox(NULL, "Pageant is already running", "Pageant Error", |
| 2002 | MB_ICONERROR | MB_OK); |
| 2003 | } |
| 2004 | if (advapi) |
| 2005 | FreeLibrary(advapi); |
| 2006 | return 0; |
| 2007 | } |
| 2008 | |
| 2009 | /* |
| 2010 | * Main message loop. |
| 2011 | */ |
| 2012 | while (GetMessage(&msg, NULL, 0, 0) == 1) { |
| 2013 | if (!(IsWindow(keylist) && IsDialogMessage(keylist, &msg)) && |
| 2014 | !(IsWindow(aboutbox) && IsDialogMessage(aboutbox, &msg))) { |
| 2015 | TranslateMessage(&msg); |
| 2016 | DispatchMessage(&msg); |
| 2017 | } |
| 2018 | } |
| 2019 | |
| 2020 | /* Clean up the system tray icon */ |
| 2021 | { |
| 2022 | NOTIFYICONDATA tnid; |
| 2023 | |
| 2024 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
| 2025 | tnid.hWnd = main_hwnd; |
| 2026 | tnid.uID = 1; |
| 2027 | |
| 2028 | Shell_NotifyIcon(NIM_DELETE, &tnid); |
| 2029 | |
| 2030 | DestroyMenu(systray_menu); |
| 2031 | } |
| 2032 | |
| 2033 | if (advapi) |
| 2034 | FreeLibrary(advapi); |
| 2035 | return msg.wParam; |
| 2036 | } |