| 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 <tchar.h> |
| 13 | |
| 14 | #include "ssh.h" |
| 15 | #include "tree234.h" |
| 16 | |
| 17 | #define IDI_MAINICON 200 |
| 18 | #define IDI_TRAYICON 201 |
| 19 | |
| 20 | #define WM_XUSER (WM_USER + 0x2000) |
| 21 | #define WM_SYSTRAY (WM_XUSER + 6) |
| 22 | #define WM_SYSTRAY2 (WM_XUSER + 7) |
| 23 | |
| 24 | #define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ |
| 25 | |
| 26 | /* |
| 27 | * FIXME: maybe some day we can sort this out ... |
| 28 | */ |
| 29 | #define AGENT_MAX_MSGLEN 8192 |
| 30 | |
| 31 | #define IDM_CLOSE 0x0010 |
| 32 | #define IDM_VIEWKEYS 0x0020 |
| 33 | #define IDM_ADDKEY 0x0030 |
| 34 | #define IDM_ABOUT 0x0040 |
| 35 | |
| 36 | #define APPNAME "Pageant" |
| 37 | |
| 38 | extern char ver[]; |
| 39 | |
| 40 | static HINSTANCE instance; |
| 41 | static HWND hwnd; |
| 42 | static HWND keylist; |
| 43 | static HWND aboutbox; |
| 44 | static HMENU systray_menu; |
| 45 | static int already_running; |
| 46 | |
| 47 | static tree234 *rsakeys, *ssh2keys; |
| 48 | |
| 49 | static int has_security; |
| 50 | #ifndef NO_SECURITY |
| 51 | typedef DWORD (WINAPI *gsi_fn_t) |
| 52 | (HANDLE, SE_OBJECT_TYPE, SECURITY_INFORMATION, |
| 53 | PSID *, PSID *, PACL *, PACL *, |
| 54 | PSECURITY_DESCRIPTOR *); |
| 55 | static gsi_fn_t getsecurityinfo; |
| 56 | #endif |
| 57 | |
| 58 | /* |
| 59 | * Exports from pageantc.c |
| 60 | */ |
| 61 | void agent_query(void *in, int inlen, void **out, int *outlen); |
| 62 | int agent_exists(void); |
| 63 | |
| 64 | /* |
| 65 | * We need this to link with the RSA code, because rsaencrypt() |
| 66 | * pads its data with random bytes. Since we only use rsadecrypt() |
| 67 | * and the signing functions, which are deterministic, this should |
| 68 | * never be called. |
| 69 | * |
| 70 | * If it _is_ called, there is a _serious_ problem, because it |
| 71 | * won't generate true random numbers. So we must scream, panic, |
| 72 | * and exit immediately if that should happen. |
| 73 | */ |
| 74 | int random_byte(void) { |
| 75 | MessageBox(hwnd, "Internal Error", APPNAME, MB_OK | MB_ICONERROR); |
| 76 | exit(0); |
| 77 | } |
| 78 | |
| 79 | /* |
| 80 | * Blob structure for passing to the asymmetric SSH2 key compare |
| 81 | * function, prototyped here. |
| 82 | */ |
| 83 | struct blob { |
| 84 | unsigned char *blob; |
| 85 | int len; |
| 86 | }; |
| 87 | static int cmpkeys_ssh2_asymm(void *av, void *bv); |
| 88 | |
| 89 | /* |
| 90 | * This function is needed to link with the DES code. We need not |
| 91 | * have it do anything at all. |
| 92 | */ |
| 93 | void logevent(char *msg) { |
| 94 | } |
| 95 | |
| 96 | #define GET_32BIT(cp) \ |
| 97 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
| 98 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
| 99 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
| 100 | ((unsigned long)(unsigned char)(cp)[3])) |
| 101 | |
| 102 | #define PUT_32BIT(cp, value) { \ |
| 103 | (cp)[0] = (unsigned char)((value) >> 24); \ |
| 104 | (cp)[1] = (unsigned char)((value) >> 16); \ |
| 105 | (cp)[2] = (unsigned char)((value) >> 8); \ |
| 106 | (cp)[3] = (unsigned char)(value); } |
| 107 | |
| 108 | #define PASSPHRASE_MAXLEN 512 |
| 109 | |
| 110 | struct PassphraseProcStruct { |
| 111 | char *passphrase; |
| 112 | char *comment; |
| 113 | }; |
| 114 | |
| 115 | /* |
| 116 | * Dialog-box function for the Licence box. |
| 117 | */ |
| 118 | static int CALLBACK LicenceProc (HWND hwnd, UINT msg, |
| 119 | WPARAM wParam, LPARAM lParam) { |
| 120 | switch (msg) { |
| 121 | case WM_INITDIALOG: |
| 122 | return 1; |
| 123 | case WM_COMMAND: |
| 124 | switch (LOWORD(wParam)) { |
| 125 | case IDOK: |
| 126 | EndDialog(hwnd, 1); |
| 127 | return 0; |
| 128 | } |
| 129 | return 0; |
| 130 | case WM_CLOSE: |
| 131 | EndDialog(hwnd, 1); |
| 132 | return 0; |
| 133 | } |
| 134 | return 0; |
| 135 | } |
| 136 | |
| 137 | /* |
| 138 | * Dialog-box function for the About box. |
| 139 | */ |
| 140 | static int CALLBACK AboutProc (HWND hwnd, UINT msg, |
| 141 | WPARAM wParam, LPARAM lParam) { |
| 142 | switch (msg) { |
| 143 | case WM_INITDIALOG: |
| 144 | SetDlgItemText (hwnd, 100, ver); |
| 145 | return 1; |
| 146 | case WM_COMMAND: |
| 147 | switch (LOWORD(wParam)) { |
| 148 | case IDOK: |
| 149 | aboutbox = NULL; |
| 150 | DestroyWindow (hwnd); |
| 151 | return 0; |
| 152 | case 101: |
| 153 | EnableWindow(hwnd, 0); |
| 154 | DialogBox (instance, MAKEINTRESOURCE(214), NULL, LicenceProc); |
| 155 | EnableWindow(hwnd, 1); |
| 156 | SetActiveWindow(hwnd); |
| 157 | return 0; |
| 158 | } |
| 159 | return 0; |
| 160 | case WM_CLOSE: |
| 161 | aboutbox = NULL; |
| 162 | DestroyWindow (hwnd); |
| 163 | return 0; |
| 164 | } |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | /* |
| 169 | * Dialog-box function for the passphrase box. |
| 170 | */ |
| 171 | static int CALLBACK PassphraseProc(HWND hwnd, UINT msg, |
| 172 | WPARAM wParam, LPARAM lParam) { |
| 173 | static char *passphrase = NULL; |
| 174 | struct PassphraseProcStruct *p; |
| 175 | |
| 176 | switch (msg) { |
| 177 | case WM_INITDIALOG: |
| 178 | /* |
| 179 | * Centre the window. |
| 180 | */ |
| 181 | { /* centre the window */ |
| 182 | RECT rs, rd; |
| 183 | HWND hw; |
| 184 | |
| 185 | hw = GetDesktopWindow(); |
| 186 | if (GetWindowRect (hw, &rs) && GetWindowRect (hwnd, &rd)) |
| 187 | MoveWindow (hwnd, (rs.right + rs.left + rd.left - rd.right)/2, |
| 188 | (rs.bottom + rs.top + rd.top - rd.bottom)/2, |
| 189 | rd.right-rd.left, rd.bottom-rd.top, TRUE); |
| 190 | } |
| 191 | |
| 192 | SetForegroundWindow(hwnd); |
| 193 | SetWindowPos (hwnd, HWND_TOP, 0, 0, 0, 0, |
| 194 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
| 195 | p = (struct PassphraseProcStruct *)lParam; |
| 196 | passphrase = p->passphrase; |
| 197 | if (p->comment) |
| 198 | SetDlgItemText(hwnd, 101, p->comment); |
| 199 | *passphrase = 0; |
| 200 | SetDlgItemText (hwnd, 102, passphrase); |
| 201 | return 0; |
| 202 | case WM_COMMAND: |
| 203 | switch (LOWORD(wParam)) { |
| 204 | case IDOK: |
| 205 | if (*passphrase) |
| 206 | EndDialog (hwnd, 1); |
| 207 | else |
| 208 | MessageBeep (0); |
| 209 | return 0; |
| 210 | case IDCANCEL: |
| 211 | EndDialog (hwnd, 0); |
| 212 | return 0; |
| 213 | case 102: /* edit box */ |
| 214 | if ((HIWORD(wParam) == EN_CHANGE) && passphrase) { |
| 215 | GetDlgItemText (hwnd, 102, passphrase, PASSPHRASE_MAXLEN-1); |
| 216 | passphrase[PASSPHRASE_MAXLEN-1] = '\0'; |
| 217 | } |
| 218 | return 0; |
| 219 | } |
| 220 | return 0; |
| 221 | case WM_CLOSE: |
| 222 | EndDialog (hwnd, 0); |
| 223 | return 0; |
| 224 | } |
| 225 | return 0; |
| 226 | } |
| 227 | |
| 228 | /* |
| 229 | * Update the visible key list. |
| 230 | */ |
| 231 | static void keylist_update(void) { |
| 232 | struct RSAKey *rkey; |
| 233 | struct ssh2_userkey *skey; |
| 234 | int i; |
| 235 | |
| 236 | if (keylist) { |
| 237 | SendDlgItemMessage(keylist, 100, LB_RESETCONTENT, 0, 0); |
| 238 | for (i = 0; NULL != (rkey = index234(rsakeys, i)); i++) { |
| 239 | char listentry[512], *p; |
| 240 | /* |
| 241 | * Replace two spaces in the fingerprint with tabs, for |
| 242 | * nice alignment in the box. |
| 243 | */ |
| 244 | strcpy(listentry, "ssh1\t"); |
| 245 | p = listentry+strlen(listentry); |
| 246 | rsa_fingerprint(p, sizeof(listentry)-(p-listentry), rkey); |
| 247 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
| 248 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
| 249 | SendDlgItemMessage (keylist, 100, LB_ADDSTRING, |
| 250 | 0, (LPARAM)listentry); |
| 251 | } |
| 252 | for (i = 0; NULL != (skey = index234(ssh2keys, i)); i++) { |
| 253 | char listentry[512], *p; |
| 254 | int len; |
| 255 | /* |
| 256 | * Replace two spaces in the fingerprint with tabs, for |
| 257 | * nice alignment in the box. |
| 258 | */ |
| 259 | p = skey->alg->fingerprint(skey->data); |
| 260 | strncpy(listentry, p, sizeof(listentry)); |
| 261 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
| 262 | p = strchr(listentry, ' '); if (p) *p = '\t'; |
| 263 | len = strlen(listentry); |
| 264 | if (len < sizeof(listentry)-2) { |
| 265 | listentry[len] = '\t'; |
| 266 | strncpy(listentry+len+1, skey->comment, sizeof(listentry)-len-1); |
| 267 | } |
| 268 | SendDlgItemMessage (keylist, 100, LB_ADDSTRING, |
| 269 | 0, (LPARAM)listentry); |
| 270 | } |
| 271 | SendDlgItemMessage (keylist, 100, LB_SETCURSEL, (WPARAM) -1, 0); |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | /* |
| 276 | * This function loads a key from a file and adds it. |
| 277 | */ |
| 278 | static void add_keyfile(char *filename) { |
| 279 | char passphrase[PASSPHRASE_MAXLEN]; |
| 280 | struct RSAKey *rkey; |
| 281 | struct ssh2_userkey *skey; |
| 282 | int needs_pass; |
| 283 | int ret; |
| 284 | int attempts; |
| 285 | char *comment; |
| 286 | struct PassphraseProcStruct pps; |
| 287 | int ver; |
| 288 | |
| 289 | ver = keyfile_version(filename); |
| 290 | if (ver == 0) { |
| 291 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
| 292 | MB_OK | MB_ICONERROR); |
| 293 | return; |
| 294 | } |
| 295 | |
| 296 | if (ver == 1) |
| 297 | needs_pass = rsakey_encrypted(filename, &comment); |
| 298 | else |
| 299 | needs_pass = ssh2_userkey_encrypted(filename, &comment); |
| 300 | attempts = 0; |
| 301 | if (ver == 1) |
| 302 | rkey = smalloc(sizeof(*rkey)); |
| 303 | pps.passphrase = passphrase; |
| 304 | pps.comment = comment; |
| 305 | do { |
| 306 | if (needs_pass) { |
| 307 | int dlgret; |
| 308 | dlgret = DialogBoxParam(instance, MAKEINTRESOURCE(210), |
| 309 | NULL, PassphraseProc, |
| 310 | (LPARAM)&pps); |
| 311 | if (!dlgret) { |
| 312 | if (comment) sfree(comment); |
| 313 | if (ver == 1) |
| 314 | sfree(rkey); |
| 315 | return; /* operation cancelled */ |
| 316 | } |
| 317 | } else |
| 318 | *passphrase = '\0'; |
| 319 | if (ver == 1) |
| 320 | ret = loadrsakey(filename, rkey, passphrase); |
| 321 | else { |
| 322 | skey = ssh2_load_userkey(filename, passphrase); |
| 323 | if (skey == SSH2_WRONG_PASSPHRASE) |
| 324 | ret = -1; |
| 325 | else if (!skey) |
| 326 | ret = 0; |
| 327 | else |
| 328 | ret = 1; |
| 329 | } |
| 330 | attempts++; |
| 331 | } while (ret == -1); |
| 332 | if (comment) sfree(comment); |
| 333 | if (ret == 0) { |
| 334 | MessageBox(NULL, "Couldn't load private key.", APPNAME, |
| 335 | MB_OK | MB_ICONERROR); |
| 336 | if (ver == 1) |
| 337 | sfree(rkey); |
| 338 | return; |
| 339 | } |
| 340 | if (ver == 1) { |
| 341 | if (already_running) { |
| 342 | unsigned char *request, *response; |
| 343 | int reqlen, clen, resplen; |
| 344 | |
| 345 | clen = strlen(rkey->comment); |
| 346 | |
| 347 | reqlen = 4 + 1 + /* length, message type */ |
| 348 | 4 + /* bit count */ |
| 349 | ssh1_bignum_length(rkey->modulus) + |
| 350 | ssh1_bignum_length(rkey->exponent) + |
| 351 | ssh1_bignum_length(rkey->private_exponent) + |
| 352 | ssh1_bignum_length(rkey->iqmp) + |
| 353 | ssh1_bignum_length(rkey->p) + |
| 354 | ssh1_bignum_length(rkey->q) + |
| 355 | 4 + clen /* comment */ |
| 356 | ; |
| 357 | |
| 358 | request = smalloc(reqlen); |
| 359 | |
| 360 | request[4] = SSH1_AGENTC_ADD_RSA_IDENTITY; |
| 361 | reqlen = 5; |
| 362 | PUT_32BIT(request+reqlen, bignum_bitcount(rkey->modulus)); |
| 363 | reqlen += 4; |
| 364 | reqlen += ssh1_write_bignum(request+reqlen, rkey->modulus); |
| 365 | reqlen += ssh1_write_bignum(request+reqlen, rkey->exponent); |
| 366 | reqlen += ssh1_write_bignum(request+reqlen, rkey->private_exponent); |
| 367 | reqlen += ssh1_write_bignum(request+reqlen, rkey->iqmp); |
| 368 | reqlen += ssh1_write_bignum(request+reqlen, rkey->p); |
| 369 | reqlen += ssh1_write_bignum(request+reqlen, rkey->q); |
| 370 | PUT_32BIT(request+reqlen, clen); |
| 371 | memcpy(request+reqlen+4, rkey->comment, clen); |
| 372 | reqlen += 4+clen; |
| 373 | PUT_32BIT(request, reqlen-4); |
| 374 | |
| 375 | agent_query(request, reqlen, &response, &resplen); |
| 376 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
| 377 | MessageBox(NULL, "The already running Pageant " |
| 378 | "refused to add the key.", APPNAME, |
| 379 | MB_OK | MB_ICONERROR); |
| 380 | } else { |
| 381 | if (add234(rsakeys, rkey) != rkey) |
| 382 | sfree(rkey); /* already present, don't waste RAM */ |
| 383 | } |
| 384 | } else { |
| 385 | if (already_running) { |
| 386 | unsigned char *request, *response; |
| 387 | int reqlen, alglen, clen, keybloblen, resplen; |
| 388 | alglen = strlen(skey->alg->name); |
| 389 | clen = strlen(skey->comment); |
| 390 | |
| 391 | keybloblen = skey->alg->openssh_fmtkey(skey->data, NULL, 0); |
| 392 | |
| 393 | reqlen = 4 + 1 + /* length, message type */ |
| 394 | 4 + alglen + /* algorithm name */ |
| 395 | keybloblen + /* key data */ |
| 396 | 4 + clen /* comment */ |
| 397 | ; |
| 398 | |
| 399 | request = smalloc(reqlen); |
| 400 | |
| 401 | request[4] = SSH2_AGENTC_ADD_IDENTITY; |
| 402 | reqlen = 5; |
| 403 | PUT_32BIT(request+reqlen, alglen); |
| 404 | reqlen += 4; |
| 405 | memcpy(request+reqlen, skey->alg->name, alglen); |
| 406 | reqlen += alglen; |
| 407 | reqlen += skey->alg->openssh_fmtkey(skey->data, |
| 408 | request+reqlen, keybloblen); |
| 409 | PUT_32BIT(request+reqlen, clen); |
| 410 | memcpy(request+reqlen+4, skey->comment, clen); |
| 411 | PUT_32BIT(request, reqlen-4); |
| 412 | reqlen += clen+4; |
| 413 | |
| 414 | agent_query(request, reqlen, &response, &resplen); |
| 415 | if (resplen < 5 || response[4] != SSH_AGENT_SUCCESS) |
| 416 | MessageBox(NULL, "The already running Pageant" |
| 417 | "refused to add the key.", APPNAME, |
| 418 | MB_OK | MB_ICONERROR); |
| 419 | } else { |
| 420 | if (add234(ssh2keys, skey) != skey) { |
| 421 | skey->alg->freekey(skey->data); |
| 422 | sfree(skey); /* already present, don't waste RAM */ |
| 423 | } |
| 424 | } |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | /* |
| 429 | * This is the main agent function that answers messages. |
| 430 | */ |
| 431 | static void answer_msg(void *msg) { |
| 432 | unsigned char *p = msg; |
| 433 | unsigned char *ret = msg; |
| 434 | int type; |
| 435 | |
| 436 | /* |
| 437 | * Get the message type. |
| 438 | */ |
| 439 | type = p[4]; |
| 440 | |
| 441 | p += 5; |
| 442 | switch (type) { |
| 443 | case SSH1_AGENTC_REQUEST_RSA_IDENTITIES: |
| 444 | /* |
| 445 | * Reply with SSH1_AGENT_RSA_IDENTITIES_ANSWER. |
| 446 | */ |
| 447 | { |
| 448 | struct RSAKey *key; |
| 449 | int len, nkeys; |
| 450 | int i; |
| 451 | |
| 452 | /* |
| 453 | * Count up the number and length of keys we hold. |
| 454 | */ |
| 455 | len = nkeys = 0; |
| 456 | for (i = 0; NULL != (key = index234(rsakeys, i)); i++) { |
| 457 | nkeys++; |
| 458 | len += 4; /* length field */ |
| 459 | len += ssh1_bignum_length(key->exponent); |
| 460 | len += ssh1_bignum_length(key->modulus); |
| 461 | len += 4 + strlen(key->comment); |
| 462 | } |
| 463 | |
| 464 | /* |
| 465 | * Packet header is the obvious five bytes, plus four |
| 466 | * bytes for the key count. |
| 467 | */ |
| 468 | len += 5 + 4; |
| 469 | if (len > AGENT_MAX_MSGLEN) |
| 470 | goto failure; /* aaargh! too much stuff! */ |
| 471 | PUT_32BIT(ret, len-4); |
| 472 | ret[4] = SSH1_AGENT_RSA_IDENTITIES_ANSWER; |
| 473 | PUT_32BIT(ret+5, nkeys); |
| 474 | p = ret + 5 + 4; |
| 475 | for (i = 0; NULL != (key = index234(rsakeys, i)); i++) { |
| 476 | PUT_32BIT(p, bignum_bitcount(key->modulus)); |
| 477 | p += 4; |
| 478 | p += ssh1_write_bignum(p, key->exponent); |
| 479 | p += ssh1_write_bignum(p, key->modulus); |
| 480 | PUT_32BIT(p, strlen(key->comment)); |
| 481 | memcpy(p+4, key->comment, strlen(key->comment)); |
| 482 | p += 4 + strlen(key->comment); |
| 483 | } |
| 484 | } |
| 485 | break; |
| 486 | case SSH2_AGENTC_REQUEST_IDENTITIES: |
| 487 | /* |
| 488 | * Reply with SSH2_AGENT_IDENTITIES_ANSWER. |
| 489 | */ |
| 490 | { |
| 491 | struct ssh2_userkey *key; |
| 492 | int len, nkeys; |
| 493 | unsigned char *blob; |
| 494 | int bloblen; |
| 495 | int i; |
| 496 | |
| 497 | /* |
| 498 | * Count up the number and length of keys we hold. |
| 499 | */ |
| 500 | len = nkeys = 0; |
| 501 | for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) { |
| 502 | nkeys++; |
| 503 | len += 4; /* length field */ |
| 504 | blob = key->alg->public_blob(key->data, &bloblen); |
| 505 | len += bloblen; |
| 506 | sfree(blob); |
| 507 | len += 4 + strlen(key->comment); |
| 508 | } |
| 509 | |
| 510 | /* |
| 511 | * Packet header is the obvious five bytes, plus four |
| 512 | * bytes for the key count. |
| 513 | */ |
| 514 | len += 5 + 4; |
| 515 | if (len > AGENT_MAX_MSGLEN) |
| 516 | goto failure; /* aaargh! too much stuff! */ |
| 517 | PUT_32BIT(ret, len-4); |
| 518 | ret[4] = SSH2_AGENT_IDENTITIES_ANSWER; |
| 519 | PUT_32BIT(ret+5, nkeys); |
| 520 | p = ret + 5 + 4; |
| 521 | for (i = 0; NULL != (key = index234(ssh2keys, i)); i++) { |
| 522 | blob = key->alg->public_blob(key->data, &bloblen); |
| 523 | PUT_32BIT(p, bloblen); |
| 524 | p += 4; |
| 525 | memcpy(p, blob, bloblen); |
| 526 | p += bloblen; |
| 527 | sfree(blob); |
| 528 | PUT_32BIT(p, strlen(key->comment)); |
| 529 | memcpy(p+4, key->comment, strlen(key->comment)); |
| 530 | p += 4 + strlen(key->comment); |
| 531 | } |
| 532 | } |
| 533 | break; |
| 534 | case SSH1_AGENTC_RSA_CHALLENGE: |
| 535 | /* |
| 536 | * Reply with either SSH1_AGENT_RSA_RESPONSE or |
| 537 | * SSH_AGENT_FAILURE, depending on whether we have that key |
| 538 | * or not. |
| 539 | */ |
| 540 | { |
| 541 | struct RSAKey reqkey, *key; |
| 542 | Bignum challenge, response; |
| 543 | unsigned char response_source[48], response_md5[16]; |
| 544 | struct MD5Context md5c; |
| 545 | int i, len; |
| 546 | |
| 547 | p += 4; |
| 548 | p += ssh1_read_bignum(p, &reqkey.exponent); |
| 549 | p += ssh1_read_bignum(p, &reqkey.modulus); |
| 550 | p += ssh1_read_bignum(p, &challenge); |
| 551 | memcpy(response_source+32, p, 16); p += 16; |
| 552 | if (GET_32BIT(p) != 1 || |
| 553 | (key = find234(rsakeys, &reqkey, NULL)) == NULL) { |
| 554 | freebn(reqkey.exponent); |
| 555 | freebn(reqkey.modulus); |
| 556 | freebn(challenge); |
| 557 | goto failure; |
| 558 | } |
| 559 | response = rsadecrypt(challenge, key); |
| 560 | for (i = 0; i < 32; i++) |
| 561 | response_source[i] = bignum_byte(response, 31-i); |
| 562 | |
| 563 | MD5Init(&md5c); |
| 564 | MD5Update(&md5c, response_source, 48); |
| 565 | MD5Final(response_md5, &md5c); |
| 566 | memset(response_source, 0, 48); /* burn the evidence */ |
| 567 | freebn(response); /* and that evidence */ |
| 568 | freebn(challenge); /* yes, and that evidence */ |
| 569 | freebn(reqkey.exponent); /* and free some memory ... */ |
| 570 | freebn(reqkey.modulus); /* ... while we're at it. */ |
| 571 | |
| 572 | /* |
| 573 | * Packet is the obvious five byte header, plus sixteen |
| 574 | * bytes of MD5. |
| 575 | */ |
| 576 | len = 5 + 16; |
| 577 | PUT_32BIT(ret, len-4); |
| 578 | ret[4] = SSH1_AGENT_RSA_RESPONSE; |
| 579 | memcpy(ret+5, response_md5, 16); |
| 580 | } |
| 581 | break; |
| 582 | case SSH2_AGENTC_SIGN_REQUEST: |
| 583 | /* |
| 584 | * Reply with either SSH2_AGENT_RSA_RESPONSE or |
| 585 | * SSH_AGENT_FAILURE, depending on whether we have that key |
| 586 | * or not. |
| 587 | */ |
| 588 | { |
| 589 | struct ssh2_userkey *key; |
| 590 | struct blob b; |
| 591 | unsigned char *data, *signature; |
| 592 | int datalen, siglen, len; |
| 593 | |
| 594 | b.len = GET_32BIT(p); |
| 595 | p += 4; |
| 596 | b.blob = p; |
| 597 | p += b.len; |
| 598 | datalen = GET_32BIT(p); |
| 599 | p += 4; |
| 600 | data = p; |
| 601 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
| 602 | if (!key) |
| 603 | goto failure; |
| 604 | signature = key->alg->sign(key->data, data, datalen, &siglen); |
| 605 | len = 5+4+siglen; |
| 606 | PUT_32BIT(ret, len-4); |
| 607 | ret[4] = SSH2_AGENT_SIGN_RESPONSE; |
| 608 | PUT_32BIT(ret+5, siglen); |
| 609 | memcpy(ret+5+4, signature, siglen); |
| 610 | sfree(signature); |
| 611 | } |
| 612 | break; |
| 613 | case SSH1_AGENTC_ADD_RSA_IDENTITY: |
| 614 | /* |
| 615 | * Add to the list and return SSH_AGENT_SUCCESS, or |
| 616 | * SSH_AGENT_FAILURE if the key was malformed. |
| 617 | */ |
| 618 | { |
| 619 | struct RSAKey *key; |
| 620 | char *comment; |
| 621 | key = smalloc(sizeof(struct RSAKey)); |
| 622 | memset(key, 0, sizeof(key)); |
| 623 | p += makekey(p, key, NULL, 1); |
| 624 | p += makeprivate(p, key); |
| 625 | p += ssh1_read_bignum(p, key->iqmp); /* p^-1 mod q */ |
| 626 | p += ssh1_read_bignum(p, key->p); /* p */ |
| 627 | p += ssh1_read_bignum(p, key->q); /* q */ |
| 628 | comment = smalloc(GET_32BIT(p)); |
| 629 | if (comment) { |
| 630 | memcpy(comment, p+4, GET_32BIT(p)); |
| 631 | key->comment = comment; |
| 632 | } |
| 633 | PUT_32BIT(ret, 1); |
| 634 | ret[4] = SSH_AGENT_FAILURE; |
| 635 | if (add234(rsakeys, key) == key) { |
| 636 | keylist_update(); |
| 637 | ret[4] = SSH_AGENT_SUCCESS; |
| 638 | } else { |
| 639 | freersakey(key); |
| 640 | sfree(key); |
| 641 | } |
| 642 | } |
| 643 | break; |
| 644 | case SSH2_AGENTC_ADD_IDENTITY: |
| 645 | /* |
| 646 | * Add to the list and return SSH_AGENT_SUCCESS, or |
| 647 | * SSH_AGENT_FAILURE if the key was malformed. |
| 648 | */ |
| 649 | { |
| 650 | struct ssh2_userkey *key; |
| 651 | char *comment, *alg; |
| 652 | int alglen, commlen; |
| 653 | int bloblen; |
| 654 | |
| 655 | key = smalloc(sizeof(struct ssh2_userkey)); |
| 656 | |
| 657 | alglen = GET_32BIT(p); p += 4; |
| 658 | alg = p; p += alglen; |
| 659 | /* Add further algorithm names here. */ |
| 660 | if (alglen == 7 && !memcmp(alg, "ssh-rsa", 7)) |
| 661 | key->alg = &ssh_rsa; |
| 662 | else { |
| 663 | sfree(key); |
| 664 | goto failure; |
| 665 | } |
| 666 | |
| 667 | bloblen = GET_32BIT((unsigned char *)msg) - (p-(unsigned char *)msg-4); |
| 668 | key->data = key->alg->openssh_createkey(&p, &bloblen); |
| 669 | if (!key->data) { |
| 670 | sfree(key); |
| 671 | goto failure; |
| 672 | } |
| 673 | commlen = GET_32BIT(p); p += 4; |
| 674 | |
| 675 | comment = smalloc(commlen+1); |
| 676 | if (comment) { |
| 677 | memcpy(comment, p, commlen); |
| 678 | comment[commlen] = '\0'; |
| 679 | } |
| 680 | key->comment = comment; |
| 681 | |
| 682 | PUT_32BIT(ret, 1); |
| 683 | ret[4] = SSH_AGENT_FAILURE; |
| 684 | if (add234(ssh2keys, key) == key) { |
| 685 | keylist_update(); |
| 686 | ret[4] = SSH_AGENT_SUCCESS; |
| 687 | } else { |
| 688 | key->alg->freekey(key->data); |
| 689 | sfree(key->comment); |
| 690 | sfree(key); |
| 691 | } |
| 692 | } |
| 693 | break; |
| 694 | case SSH1_AGENTC_REMOVE_RSA_IDENTITY: |
| 695 | /* |
| 696 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
| 697 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
| 698 | * start with. |
| 699 | */ |
| 700 | { |
| 701 | struct RSAKey reqkey, *key; |
| 702 | |
| 703 | p += makekey(p, &reqkey, NULL, 0); |
| 704 | key = find234(rsakeys, &reqkey, NULL); |
| 705 | freebn(reqkey.exponent); |
| 706 | freebn(reqkey.modulus); |
| 707 | PUT_32BIT(ret, 1); |
| 708 | ret[4] = SSH_AGENT_FAILURE; |
| 709 | if (key) { |
| 710 | del234(rsakeys, key); |
| 711 | keylist_update(); |
| 712 | freersakey(key); |
| 713 | sfree(key); |
| 714 | ret[4] = SSH_AGENT_SUCCESS; |
| 715 | } |
| 716 | } |
| 717 | break; |
| 718 | case SSH2_AGENTC_REMOVE_IDENTITY: |
| 719 | /* |
| 720 | * Remove from the list and return SSH_AGENT_SUCCESS, or |
| 721 | * perhaps SSH_AGENT_FAILURE if it wasn't in the list to |
| 722 | * start with. |
| 723 | */ |
| 724 | { |
| 725 | struct ssh2_userkey *key; |
| 726 | struct blob b; |
| 727 | |
| 728 | b.len = GET_32BIT(p); |
| 729 | p += 4; |
| 730 | b.blob = p; |
| 731 | p += b.len; |
| 732 | key = find234(ssh2keys, &b, cmpkeys_ssh2_asymm); |
| 733 | if (!key) |
| 734 | goto failure; |
| 735 | |
| 736 | PUT_32BIT(ret, 1); |
| 737 | ret[4] = SSH_AGENT_FAILURE; |
| 738 | if (key) { |
| 739 | del234(ssh2keys, key); |
| 740 | keylist_update(); |
| 741 | key->alg->freekey(key->data); |
| 742 | sfree(key); |
| 743 | ret[4] = SSH_AGENT_SUCCESS; |
| 744 | } |
| 745 | } |
| 746 | break; |
| 747 | case SSH1_AGENTC_REMOVE_ALL_RSA_IDENTITIES: |
| 748 | /* |
| 749 | * Remove all SSH1 keys. Always returns success. |
| 750 | */ |
| 751 | { |
| 752 | struct RSAKey *rkey; |
| 753 | |
| 754 | while ( (rkey = index234(rsakeys, 0)) != NULL ) { |
| 755 | del234(rsakeys, rkey); |
| 756 | freersakey(rkey); |
| 757 | sfree(rkey); |
| 758 | } |
| 759 | keylist_update(); |
| 760 | |
| 761 | PUT_32BIT(ret, 1); |
| 762 | ret[4] = SSH_AGENT_SUCCESS; |
| 763 | } |
| 764 | break; |
| 765 | case SSH2_AGENTC_REMOVE_ALL_IDENTITIES: |
| 766 | /* |
| 767 | * Remove all SSH2 keys. Always returns success. |
| 768 | */ |
| 769 | { |
| 770 | struct ssh2_userkey *skey; |
| 771 | |
| 772 | while ( (skey = index234(ssh2keys, 0)) != NULL ) { |
| 773 | del234(ssh2keys, skey); |
| 774 | skey->alg->freekey(skey->data); |
| 775 | sfree(skey); |
| 776 | } |
| 777 | keylist_update(); |
| 778 | |
| 779 | PUT_32BIT(ret, 1); |
| 780 | ret[4] = SSH_AGENT_SUCCESS; |
| 781 | } |
| 782 | break; |
| 783 | default: |
| 784 | failure: |
| 785 | /* |
| 786 | * Unrecognised message. Return SSH_AGENT_FAILURE. |
| 787 | */ |
| 788 | PUT_32BIT(ret, 1); |
| 789 | ret[4] = SSH_AGENT_FAILURE; |
| 790 | break; |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | /* |
| 795 | * Key comparison function for the 2-3-4 tree of RSA keys. |
| 796 | */ |
| 797 | static int cmpkeys_rsa(void *av, void *bv) { |
| 798 | struct RSAKey *a = (struct RSAKey *)av; |
| 799 | struct RSAKey *b = (struct RSAKey *)bv; |
| 800 | Bignum am, bm; |
| 801 | int alen, blen; |
| 802 | |
| 803 | am = a->modulus; |
| 804 | bm = b->modulus; |
| 805 | /* |
| 806 | * Compare by length of moduli. |
| 807 | */ |
| 808 | alen = bignum_bitcount(am); |
| 809 | blen = bignum_bitcount(bm); |
| 810 | if (alen > blen) return +1; else if (alen < blen) return -1; |
| 811 | /* |
| 812 | * Now compare by moduli themselves. |
| 813 | */ |
| 814 | alen = (alen + 7) / 8; /* byte count */ |
| 815 | while (alen-- > 0) { |
| 816 | int abyte, bbyte; |
| 817 | abyte = bignum_byte(am, alen); |
| 818 | bbyte = bignum_byte(bm, alen); |
| 819 | if (abyte > bbyte) return +1; else if (abyte < bbyte) return -1; |
| 820 | } |
| 821 | /* |
| 822 | * Give up. |
| 823 | */ |
| 824 | return 0; |
| 825 | } |
| 826 | |
| 827 | /* |
| 828 | * Key comparison function for the 2-3-4 tree of SSH2 keys. |
| 829 | */ |
| 830 | static int cmpkeys_ssh2(void *av, void *bv) { |
| 831 | struct ssh2_userkey *a = (struct ssh2_userkey *)av; |
| 832 | struct ssh2_userkey *b = (struct ssh2_userkey *)bv; |
| 833 | int i; |
| 834 | int alen, blen; |
| 835 | unsigned char *ablob, *bblob; |
| 836 | int c; |
| 837 | |
| 838 | /* |
| 839 | * Compare purely by public blob. |
| 840 | */ |
| 841 | ablob = a->alg->public_blob(a->data, &alen); |
| 842 | bblob = b->alg->public_blob(b->data, &blen); |
| 843 | |
| 844 | c = 0; |
| 845 | for (i = 0; i < alen && i < blen; i++) { |
| 846 | if (ablob[i] < bblob[i]) { |
| 847 | c = -1; break; |
| 848 | } else if (ablob[i] > bblob[i]) { |
| 849 | c = +1; break; |
| 850 | } |
| 851 | } |
| 852 | if (c == 0 && i < alen) c = +1; /* a is longer */ |
| 853 | if (c == 0 && i < blen) c = -1; /* a is longer */ |
| 854 | |
| 855 | sfree(ablob); |
| 856 | sfree(bblob); |
| 857 | |
| 858 | return c; |
| 859 | } |
| 860 | |
| 861 | /* |
| 862 | * Key comparison function for looking up a blob in the 2-3-4 tree |
| 863 | * of SSH2 keys. |
| 864 | */ |
| 865 | static int cmpkeys_ssh2_asymm(void *av, void *bv) { |
| 866 | struct blob *a = (struct blob *)av; |
| 867 | struct ssh2_userkey *b = (struct ssh2_userkey *)bv; |
| 868 | int i; |
| 869 | int alen, blen; |
| 870 | unsigned char *ablob, *bblob; |
| 871 | int c; |
| 872 | |
| 873 | /* |
| 874 | * Compare purely by public blob. |
| 875 | */ |
| 876 | ablob = a->blob; |
| 877 | alen = a->len; |
| 878 | bblob = b->alg->public_blob(b->data, &blen); |
| 879 | |
| 880 | c = 0; |
| 881 | for (i = 0; i < alen && i < blen; i++) { |
| 882 | if (ablob[i] < bblob[i]) { |
| 883 | c = -1; break; |
| 884 | } else if (ablob[i] > bblob[i]) { |
| 885 | c = +1; break; |
| 886 | } |
| 887 | } |
| 888 | if (c == 0 && i < alen) c = +1; /* a is longer */ |
| 889 | if (c == 0 && i < blen) c = -1; /* a is longer */ |
| 890 | |
| 891 | sfree(bblob); |
| 892 | |
| 893 | return c; |
| 894 | } |
| 895 | |
| 896 | static void error(char *s) { |
| 897 | MessageBox(hwnd, s, APPNAME, MB_OK | MB_ICONERROR); |
| 898 | } |
| 899 | |
| 900 | /* |
| 901 | * Prompt for a key file to add, and add it. |
| 902 | */ |
| 903 | static void prompt_add_keyfile(void) { |
| 904 | OPENFILENAME of; |
| 905 | char filename[FILENAME_MAX]; |
| 906 | memset(&of, 0, sizeof(of)); |
| 907 | #ifdef OPENFILENAME_SIZE_VERSION_400 |
| 908 | of.lStructSize = OPENFILENAME_SIZE_VERSION_400; |
| 909 | #else |
| 910 | of.lStructSize = sizeof(of); |
| 911 | #endif |
| 912 | of.hwndOwner = hwnd; |
| 913 | of.lpstrFilter = "All Files\0*\0\0\0"; |
| 914 | of.lpstrCustomFilter = NULL; |
| 915 | of.nFilterIndex = 1; |
| 916 | of.lpstrFile = filename; *filename = '\0'; |
| 917 | of.nMaxFile = sizeof(filename); |
| 918 | of.lpstrFileTitle = NULL; |
| 919 | of.lpstrInitialDir = NULL; |
| 920 | of.lpstrTitle = "Select Private Key File"; |
| 921 | of.Flags = 0; |
| 922 | if (GetOpenFileName(&of)) { |
| 923 | add_keyfile(filename); |
| 924 | keylist_update(); |
| 925 | } |
| 926 | } |
| 927 | |
| 928 | /* |
| 929 | * Dialog-box function for the key list box. |
| 930 | */ |
| 931 | static int CALLBACK KeyListProc(HWND hwnd, UINT msg, |
| 932 | WPARAM wParam, LPARAM lParam) { |
| 933 | struct RSAKey *rkey; |
| 934 | struct ssh2_userkey *skey; |
| 935 | |
| 936 | switch (msg) { |
| 937 | case WM_INITDIALOG: |
| 938 | /* |
| 939 | * Centre the window. |
| 940 | */ |
| 941 | { /* centre the window */ |
| 942 | RECT rs, rd; |
| 943 | HWND hw; |
| 944 | |
| 945 | hw = GetDesktopWindow(); |
| 946 | if (GetWindowRect (hw, &rs) && GetWindowRect (hwnd, &rd)) |
| 947 | MoveWindow (hwnd, (rs.right + rs.left + rd.left - rd.right)/2, |
| 948 | (rs.bottom + rs.top + rd.top - rd.bottom)/2, |
| 949 | rd.right-rd.left, rd.bottom-rd.top, TRUE); |
| 950 | } |
| 951 | |
| 952 | keylist = hwnd; |
| 953 | { |
| 954 | static int tabs[] = {35, 60, 210}; |
| 955 | SendDlgItemMessage (hwnd, 100, LB_SETTABSTOPS, |
| 956 | sizeof(tabs)/sizeof(*tabs), (LPARAM) tabs); |
| 957 | } |
| 958 | keylist_update(); |
| 959 | return 0; |
| 960 | case WM_COMMAND: |
| 961 | switch (LOWORD(wParam)) { |
| 962 | case IDOK: |
| 963 | case IDCANCEL: |
| 964 | keylist = NULL; |
| 965 | DestroyWindow(hwnd); |
| 966 | return 0; |
| 967 | case 101: /* add key */ |
| 968 | if (HIWORD(wParam) == BN_CLICKED || |
| 969 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
| 970 | prompt_add_keyfile(); |
| 971 | } |
| 972 | return 0; |
| 973 | case 102: /* remove key */ |
| 974 | if (HIWORD(wParam) == BN_CLICKED || |
| 975 | HIWORD(wParam) == BN_DOUBLECLICKED) { |
| 976 | int n = SendDlgItemMessage (hwnd, 100, LB_GETCURSEL, 0, 0); |
| 977 | int i; |
| 978 | if (n == LB_ERR) { |
| 979 | MessageBeep(0); |
| 980 | break; |
| 981 | } |
| 982 | for (i = 0; NULL != (rkey = index234(rsakeys, i)); i++) |
| 983 | if (n-- == 0) |
| 984 | break; |
| 985 | if (rkey) { |
| 986 | del234(rsakeys, rkey); |
| 987 | freersakey(rkey); |
| 988 | sfree(rkey); |
| 989 | } else { |
| 990 | for (i = 0; NULL != (skey = index234(ssh2keys, i)); i++) |
| 991 | if (n-- == 0) |
| 992 | break; |
| 993 | if (skey) { |
| 994 | del234(ssh2keys, skey); |
| 995 | skey->alg->freekey(skey->data); |
| 996 | sfree(skey); |
| 997 | } |
| 998 | } |
| 999 | keylist_update(); |
| 1000 | } |
| 1001 | return 0; |
| 1002 | } |
| 1003 | return 0; |
| 1004 | case WM_CLOSE: |
| 1005 | keylist = NULL; |
| 1006 | DestroyWindow(hwnd); |
| 1007 | return 0; |
| 1008 | } |
| 1009 | return 0; |
| 1010 | } |
| 1011 | |
| 1012 | static LRESULT CALLBACK WndProc (HWND hwnd, UINT message, |
| 1013 | WPARAM wParam, LPARAM lParam) { |
| 1014 | int ret; |
| 1015 | static int menuinprogress; |
| 1016 | |
| 1017 | switch (message) { |
| 1018 | case WM_SYSTRAY: |
| 1019 | if (lParam == WM_RBUTTONUP) { |
| 1020 | POINT cursorpos; |
| 1021 | GetCursorPos(&cursorpos); |
| 1022 | PostMessage(hwnd, WM_SYSTRAY2, cursorpos.x, cursorpos.y); |
| 1023 | } else if (lParam == WM_LBUTTONDBLCLK) { |
| 1024 | /* Equivalent to IDM_VIEWKEYS. */ |
| 1025 | PostMessage(hwnd, WM_COMMAND, IDM_VIEWKEYS, 0); |
| 1026 | } |
| 1027 | break; |
| 1028 | case WM_SYSTRAY2: |
| 1029 | if (!menuinprogress) { |
| 1030 | menuinprogress = 1; |
| 1031 | SetForegroundWindow(hwnd); |
| 1032 | ret = TrackPopupMenu(systray_menu, |
| 1033 | TPM_RIGHTALIGN | TPM_BOTTOMALIGN | |
| 1034 | TPM_RIGHTBUTTON, |
| 1035 | wParam, lParam, 0, hwnd, NULL); |
| 1036 | menuinprogress = 0; |
| 1037 | } |
| 1038 | break; |
| 1039 | case WM_COMMAND: |
| 1040 | case WM_SYSCOMMAND: |
| 1041 | switch (wParam & ~0xF) { /* low 4 bits reserved to Windows */ |
| 1042 | case IDM_CLOSE: |
| 1043 | SendMessage(hwnd, WM_CLOSE, 0, 0); |
| 1044 | break; |
| 1045 | case IDM_VIEWKEYS: |
| 1046 | if (!keylist) { |
| 1047 | keylist = CreateDialog (instance, MAKEINTRESOURCE(211), |
| 1048 | NULL, KeyListProc); |
| 1049 | ShowWindow (keylist, SW_SHOWNORMAL); |
| 1050 | /* |
| 1051 | * Sometimes the window comes up minimised / hidden |
| 1052 | * for no obvious reason. Prevent this. |
| 1053 | */ |
| 1054 | SetForegroundWindow(keylist); |
| 1055 | SetWindowPos (keylist, HWND_TOP, 0, 0, 0, 0, |
| 1056 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
| 1057 | } |
| 1058 | break; |
| 1059 | case IDM_ADDKEY: |
| 1060 | prompt_add_keyfile(); |
| 1061 | break; |
| 1062 | case IDM_ABOUT: |
| 1063 | if (!aboutbox) { |
| 1064 | aboutbox = CreateDialog (instance, MAKEINTRESOURCE(213), |
| 1065 | NULL, AboutProc); |
| 1066 | ShowWindow (aboutbox, SW_SHOWNORMAL); |
| 1067 | /* |
| 1068 | * Sometimes the window comes up minimised / hidden |
| 1069 | * for no obvious reason. Prevent this. |
| 1070 | */ |
| 1071 | SetForegroundWindow(aboutbox); |
| 1072 | SetWindowPos (aboutbox, HWND_TOP, 0, 0, 0, 0, |
| 1073 | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW); |
| 1074 | } |
| 1075 | break; |
| 1076 | } |
| 1077 | break; |
| 1078 | case WM_DESTROY: |
| 1079 | PostQuitMessage (0); |
| 1080 | return 0; |
| 1081 | case WM_COPYDATA: |
| 1082 | { |
| 1083 | COPYDATASTRUCT *cds; |
| 1084 | char *mapname; |
| 1085 | void *p; |
| 1086 | HANDLE filemap, proc; |
| 1087 | PSID mapowner, procowner; |
| 1088 | PSECURITY_DESCRIPTOR psd1 = NULL, psd2 = NULL; |
| 1089 | int ret = 0; |
| 1090 | |
| 1091 | cds = (COPYDATASTRUCT *)lParam; |
| 1092 | if (cds->dwData != AGENT_COPYDATA_ID) |
| 1093 | return 0; /* not our message, mate */ |
| 1094 | mapname = (char *)cds->lpData; |
| 1095 | if (mapname[cds->cbData - 1] != '\0') |
| 1096 | return 0; /* failure to be ASCIZ! */ |
| 1097 | #ifdef DEBUG_IPC |
| 1098 | debug(("mapname is :%s:\r\n", mapname)); |
| 1099 | #endif |
| 1100 | filemap = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, mapname); |
| 1101 | #ifdef DEBUG_IPC |
| 1102 | debug(("filemap is %p\r\n", filemap)); |
| 1103 | #endif |
| 1104 | if (filemap != NULL && filemap != INVALID_HANDLE_VALUE) { |
| 1105 | int rc; |
| 1106 | #ifndef NO_SECURITY |
| 1107 | if (has_security) { |
| 1108 | if ((proc = OpenProcess(MAXIMUM_ALLOWED, FALSE, |
| 1109 | GetCurrentProcessId())) == NULL) { |
| 1110 | #ifdef DEBUG_IPC |
| 1111 | debug(("couldn't get handle for process\r\n")); |
| 1112 | #endif |
| 1113 | return 0; |
| 1114 | } |
| 1115 | if (getsecurityinfo(proc, SE_KERNEL_OBJECT, |
| 1116 | OWNER_SECURITY_INFORMATION, |
| 1117 | &procowner, NULL, NULL, NULL, |
| 1118 | &psd2) != ERROR_SUCCESS) { |
| 1119 | #ifdef DEBUG_IPC |
| 1120 | debug(("couldn't get owner info for process\r\n")); |
| 1121 | #endif |
| 1122 | CloseHandle(proc); |
| 1123 | return 0; /* unable to get security info */ |
| 1124 | } |
| 1125 | CloseHandle(proc); |
| 1126 | if ((rc = getsecurityinfo(filemap, SE_KERNEL_OBJECT, |
| 1127 | OWNER_SECURITY_INFORMATION, |
| 1128 | &mapowner, NULL, NULL, NULL, |
| 1129 | &psd1) != ERROR_SUCCESS)) { |
| 1130 | #ifdef DEBUG_IPC |
| 1131 | debug(("couldn't get owner info for filemap: %d\r\n", rc)); |
| 1132 | #endif |
| 1133 | return 0; |
| 1134 | } |
| 1135 | #ifdef DEBUG_IPC |
| 1136 | debug(("got security stuff\r\n")); |
| 1137 | #endif |
| 1138 | if (!EqualSid(mapowner, procowner)) |
| 1139 | return 0; /* security ID mismatch! */ |
| 1140 | #ifdef DEBUG_IPC |
| 1141 | debug(("security stuff matched\r\n")); |
| 1142 | #endif |
| 1143 | LocalFree(psd1); |
| 1144 | LocalFree(psd2); |
| 1145 | } else { |
| 1146 | #ifdef DEBUG_IPC |
| 1147 | debug(("security APIs not present\r\n")); |
| 1148 | #endif |
| 1149 | } |
| 1150 | #endif |
| 1151 | p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0); |
| 1152 | #ifdef DEBUG_IPC |
| 1153 | debug(("p is %p\r\n", p)); |
| 1154 | {int i; for(i=0;i<5;i++)debug(("p[%d]=%02x\r\n", i, ((unsigned char *)p)[i]));} |
| 1155 | #endif |
| 1156 | answer_msg(p); |
| 1157 | ret = 1; |
| 1158 | UnmapViewOfFile(p); |
| 1159 | } |
| 1160 | CloseHandle(filemap); |
| 1161 | return ret; |
| 1162 | } |
| 1163 | } |
| 1164 | |
| 1165 | return DefWindowProc (hwnd, message, wParam, lParam); |
| 1166 | } |
| 1167 | |
| 1168 | /* |
| 1169 | * Fork and Exec the command in cmdline. [DBW] |
| 1170 | */ |
| 1171 | void spawn_cmd(char *cmdline, int show) { |
| 1172 | if (ShellExecute(NULL, _T("open"), cmdline, |
| 1173 | NULL, NULL, show) <= (HINSTANCE) 32) { |
| 1174 | TCHAR sMsg[140]; |
| 1175 | sprintf(sMsg, _T("Failed to run \"%.100s\", Error: %d"), cmdline, |
| 1176 | GetLastError()); |
| 1177 | MessageBox(NULL, sMsg, APPNAME, MB_OK | MB_ICONEXCLAMATION); |
| 1178 | } |
| 1179 | } |
| 1180 | |
| 1181 | int WINAPI WinMain(HINSTANCE inst, HINSTANCE prev, LPSTR cmdline, int show) { |
| 1182 | WNDCLASS wndclass; |
| 1183 | MSG msg; |
| 1184 | OSVERSIONINFO osi; |
| 1185 | HMODULE advapi; |
| 1186 | char *command = NULL; |
| 1187 | int added_keys = 0; |
| 1188 | |
| 1189 | /* |
| 1190 | * Determine whether we're an NT system (should have security |
| 1191 | * APIs) or a non-NT system (don't do security). |
| 1192 | */ |
| 1193 | memset(&osi, 0, sizeof(OSVERSIONINFO)); |
| 1194 | osi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); |
| 1195 | if (GetVersionEx(&osi) && osi.dwPlatformId==VER_PLATFORM_WIN32_NT) { |
| 1196 | has_security = TRUE; |
| 1197 | } else |
| 1198 | has_security = FALSE; |
| 1199 | |
| 1200 | if (has_security) { |
| 1201 | #ifndef NO_SECURITY |
| 1202 | /* |
| 1203 | * Attempt to get the security API we need. |
| 1204 | */ |
| 1205 | advapi = LoadLibrary("ADVAPI32.DLL"); |
| 1206 | getsecurityinfo = (gsi_fn_t)GetProcAddress(advapi, "GetSecurityInfo"); |
| 1207 | if (!getsecurityinfo) { |
| 1208 | MessageBox(NULL, |
| 1209 | "Unable to access security APIs. Pageant will\n" |
| 1210 | "not run, in case it causes a security breach.", |
| 1211 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
| 1212 | return 1; |
| 1213 | } |
| 1214 | #else |
| 1215 | MessageBox(NULL, |
| 1216 | "This program has been compiled for Win9X and will\n" |
| 1217 | "not run on NT, in case it causes a security breach.", |
| 1218 | "Pageant Fatal Error", MB_ICONERROR | MB_OK); |
| 1219 | return 1; |
| 1220 | #endif |
| 1221 | } else |
| 1222 | advapi = NULL; |
| 1223 | |
| 1224 | instance = inst; |
| 1225 | |
| 1226 | /* |
| 1227 | * Find out if Pageant is already running. |
| 1228 | */ |
| 1229 | already_running = FALSE; |
| 1230 | if (agent_exists()) |
| 1231 | already_running = TRUE; |
| 1232 | else { |
| 1233 | |
| 1234 | if (!prev) { |
| 1235 | wndclass.style = 0; |
| 1236 | wndclass.lpfnWndProc = WndProc; |
| 1237 | wndclass.cbClsExtra = 0; |
| 1238 | wndclass.cbWndExtra = 0; |
| 1239 | wndclass.hInstance = inst; |
| 1240 | wndclass.hIcon = LoadIcon (inst, |
| 1241 | MAKEINTRESOURCE(IDI_MAINICON)); |
| 1242 | wndclass.hCursor = LoadCursor (NULL, IDC_IBEAM); |
| 1243 | wndclass.hbrBackground = GetStockObject (BLACK_BRUSH); |
| 1244 | wndclass.lpszMenuName = NULL; |
| 1245 | wndclass.lpszClassName = APPNAME; |
| 1246 | |
| 1247 | RegisterClass (&wndclass); |
| 1248 | } |
| 1249 | |
| 1250 | hwnd = keylist = NULL; |
| 1251 | |
| 1252 | hwnd = CreateWindow (APPNAME, APPNAME, |
| 1253 | WS_OVERLAPPEDWINDOW | WS_VSCROLL, |
| 1254 | CW_USEDEFAULT, CW_USEDEFAULT, |
| 1255 | 100, 100, NULL, NULL, inst, NULL); |
| 1256 | |
| 1257 | /* Set up a system tray icon */ |
| 1258 | { |
| 1259 | BOOL res; |
| 1260 | NOTIFYICONDATA tnid; |
| 1261 | HICON hicon; |
| 1262 | |
| 1263 | #ifdef NIM_SETVERSION |
| 1264 | tnid.uVersion = 0; |
| 1265 | res = Shell_NotifyIcon(NIM_SETVERSION, &tnid); |
| 1266 | #endif |
| 1267 | |
| 1268 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
| 1269 | tnid.hWnd = hwnd; |
| 1270 | tnid.uID = 1; /* unique within this systray use */ |
| 1271 | tnid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP; |
| 1272 | tnid.uCallbackMessage = WM_SYSTRAY; |
| 1273 | tnid.hIcon = hicon = LoadIcon (instance, MAKEINTRESOURCE(201)); |
| 1274 | strcpy(tnid.szTip, "Pageant (PuTTY authentication agent)"); |
| 1275 | |
| 1276 | res = Shell_NotifyIcon(NIM_ADD, &tnid); |
| 1277 | |
| 1278 | if (hicon) |
| 1279 | DestroyIcon(hicon); |
| 1280 | |
| 1281 | systray_menu = CreatePopupMenu(); |
| 1282 | /* accelerators used: vkxa */ |
| 1283 | AppendMenu (systray_menu, MF_ENABLED, IDM_VIEWKEYS, "&View Keys"); |
| 1284 | AppendMenu (systray_menu, MF_ENABLED, IDM_ADDKEY, "Add &Key"); |
| 1285 | AppendMenu (systray_menu, MF_ENABLED, IDM_ABOUT, "&About"); |
| 1286 | AppendMenu (systray_menu, MF_ENABLED, IDM_CLOSE, "E&xit"); |
| 1287 | } |
| 1288 | |
| 1289 | ShowWindow (hwnd, SW_HIDE); |
| 1290 | |
| 1291 | /* |
| 1292 | * Initialise storage for RSA keys. |
| 1293 | */ |
| 1294 | rsakeys = newtree234(cmpkeys_rsa); |
| 1295 | ssh2keys = newtree234(cmpkeys_ssh2); |
| 1296 | |
| 1297 | } |
| 1298 | |
| 1299 | /* |
| 1300 | * Process the command line and add keys as listed on it. |
| 1301 | * If we already determined that we need to spawn a program from above we |
| 1302 | * need to ignore the first two arguments. [DBW] |
| 1303 | */ |
| 1304 | { |
| 1305 | char *p; |
| 1306 | int inquotes = 0; |
| 1307 | int ignorearg = 0; |
| 1308 | p = cmdline; |
| 1309 | while (*p) { |
| 1310 | while (*p && isspace(*p)) p++; |
| 1311 | if (*p && !isspace(*p)) { |
| 1312 | char *q = p, *pp = p; |
| 1313 | while (*p && (inquotes || !isspace(*p))) |
| 1314 | { |
| 1315 | if (*p == '"') { |
| 1316 | inquotes = !inquotes; |
| 1317 | p++; |
| 1318 | continue; |
| 1319 | } |
| 1320 | *pp++ = *p++; |
| 1321 | } |
| 1322 | if (*pp) { |
| 1323 | if (*p) p++; |
| 1324 | *pp++ = '\0'; |
| 1325 | } |
| 1326 | if (!strcmp(q, "-c")) { |
| 1327 | /* |
| 1328 | * If we see `-c', then the rest of the |
| 1329 | * command line should be treated as a |
| 1330 | * command to be spawned. |
| 1331 | */ |
| 1332 | while (*p && isspace(*p)) p++; |
| 1333 | command = p; |
| 1334 | break; |
| 1335 | } else { |
| 1336 | add_keyfile(q); |
| 1337 | added_keys = TRUE; |
| 1338 | } |
| 1339 | } |
| 1340 | } |
| 1341 | } |
| 1342 | |
| 1343 | if (command) spawn_cmd (command, show); |
| 1344 | |
| 1345 | /* |
| 1346 | * If Pageant was already running, we leave now. If we haven't |
| 1347 | * even taken any auxiliary action (spawned a command or added |
| 1348 | * keys), complain. |
| 1349 | */ |
| 1350 | if (already_running) { |
| 1351 | if (!command && !added_keys) { |
| 1352 | MessageBox(NULL, "Pageant is already running", "Pageant Error", |
| 1353 | MB_ICONERROR | MB_OK); |
| 1354 | } |
| 1355 | if (advapi) FreeLibrary(advapi); |
| 1356 | return 0; |
| 1357 | } |
| 1358 | |
| 1359 | /* |
| 1360 | * Main message loop. |
| 1361 | */ |
| 1362 | while (GetMessage(&msg, NULL, 0, 0) == 1) { |
| 1363 | TranslateMessage(&msg); |
| 1364 | DispatchMessage(&msg); |
| 1365 | } |
| 1366 | |
| 1367 | /* Clean up the system tray icon */ |
| 1368 | { |
| 1369 | NOTIFYICONDATA tnid; |
| 1370 | |
| 1371 | tnid.cbSize = sizeof(NOTIFYICONDATA); |
| 1372 | tnid.hWnd = hwnd; |
| 1373 | tnid.uID = 1; |
| 1374 | |
| 1375 | Shell_NotifyIcon(NIM_DELETE, &tnid); |
| 1376 | |
| 1377 | DestroyMenu(systray_menu); |
| 1378 | } |
| 1379 | |
| 1380 | if (advapi) FreeLibrary(advapi); |
| 1381 | exit(msg.wParam); |
| 1382 | } |