/usr/share/tcltk/tcllib1.14/mime/mime.tcl is in tcllib 1.14-dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518 2519 2520 2521 2522 2523 2524 2525 2526 2527 2528 2529 2530 2531 2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596 2597 2598 2599 2600 2601 2602 2603 2604 2605 2606 2607 2608 2609 2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763 2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782 2783 2784 2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 2977 2978 2979 2980 2981 2982 2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036 3037 3038 3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 3188 3189 3190 3191 3192 3193 3194 3195 3196 3197 3198 3199 3200 3201 3202 3203 3204 3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215 3216 3217 3218 3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236 3237 3238 3239 3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 | # mime.tcl - MIME body parts
#
# (c) 1999-2000 Marshall T. Rose
# (c) 2000 Brent Welch
# (c) 2000 Sandeep Tamhankar
# (c) 2000 Dan Kuchler
# (c) 2000-2001 Eric Melski
# (c) 2001 Jeff Hobbs
# (c) 2001-2008 Andreas Kupries
# (c) 2002-2003 David Welton
# (c) 2003-2008 Pat Thoyts
# (c) 2005 Benjamin Riefenstahl
#
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# Influenced by Borenstein's/Rose's safe-tcl (circa 1993) and Darren New's
# unpublished package of 1999.
#
# new string features and inline scan are used, requiring 8.3.
package require Tcl 8.3
package provide mime 1.5.4
if {[catch {package require Trf 2.0}]} {
# Fall-back to tcl-based procedures of base64 and quoted-printable encoders
# Warning!
# These are a fragile emulations of the more general calling sequence
# that appears to work with this code here.
package require base64 2.0
set ::major [lindex [split [package require md5] .] 0]
# Create these commands in the mime namespace so that they
# won't collide with things at the global namespace level
namespace eval ::mime {
proc base64 {-mode what -- chunk} {
return [base64::$what $chunk]
}
proc quoted-printable {-mode what -- chunk} {
return [mime::qp_$what $chunk]
}
if {$::major < 2} {
# md5 v1, result is hex string ready for use.
proc md5 {-- string} {
return [md5::md5 $string]
}
} else {
# md5 v2, need option to get hex string
proc md5 {-- string} {
return [md5::md5 -hex $string]
}
}
}
unset ::major
}
#
# state variables:
#
# canonicalP: input is in its canonical form
# content: type/subtype
# params: seralized array of key/value pairs (keys are lower-case)
# encoding: transfer encoding
# version: MIME-version
# header: serialized array of key/value pairs (keys are lower-case)
# lowerL: list of header keys, lower-case
# mixedL: list of header keys, mixed-case
# value: either "file", "parts", or "string"
#
# file: input file
# fd: cached file-descriptor, typically for root
# root: token for top-level part, for (distant) subordinates
# offset: number of octets from beginning of file/string
# count: length in octets of (encoded) content
#
# parts: list of bodies (tokens)
#
# string: input string
#
# cid: last child-id assigned
#
namespace eval ::mime {
variable mime
array set mime { uid 0 cid 0 }
# 822 lexemes
variable addrtokenL [list ";" "," \
"<" ">" \
":" "." \
"(" ")" \
"@" "\"" \
"\[" "\]" \
"\\"]
variable addrlexemeL [list LX_SEMICOLON LX_COMMA \
LX_LBRACKET LX_RBRACKET \
LX_COLON LX_DOT \
LX_LPAREN LX_RPAREN \
LX_ATSIGN LX_QUOTE \
LX_LSQUARE LX_RSQUARE \
LX_QUOTE]
# 2045 lexemes
variable typetokenL [list ";" "," \
"<" ">" \
":" "?" \
"(" ")" \
"@" "\"" \
"\[" "\]" \
"=" "/" \
"\\"]
variable typelexemeL [list LX_SEMICOLON LX_COMMA \
LX_LBRACKET LX_RBRACKET \
LX_COLON LX_QUESTION \
LX_LPAREN LX_RPAREN \
LX_ATSIGN LX_QUOTE \
LX_LSQUARE LX_RSQUARE \
LX_EQUALS LX_SOLIDUS \
LX_QUOTE]
set encList [list \
ascii US-ASCII \
big5 Big5 \
cp1250 Windows-1250 \
cp1251 Windows-1251 \
cp1252 Windows-1252 \
cp1253 Windows-1253 \
cp1254 Windows-1254 \
cp1255 Windows-1255 \
cp1256 Windows-1256 \
cp1257 Windows-1257 \
cp1258 Windows-1258 \
cp437 IBM437 \
cp737 "" \
cp775 IBM775 \
cp850 IBM850 \
cp852 IBM852 \
cp855 IBM855 \
cp857 IBM857 \
cp860 IBM860 \
cp861 IBM861 \
cp862 IBM862 \
cp863 IBM863 \
cp864 IBM864 \
cp865 IBM865 \
cp866 IBM866 \
cp869 IBM869 \
cp874 "" \
cp932 "" \
cp936 GBK \
cp949 "" \
cp950 "" \
dingbats "" \
ebcdic "" \
euc-cn EUC-CN \
euc-jp EUC-JP \
euc-kr EUC-KR \
gb12345 GB12345 \
gb1988 GB1988 \
gb2312 GB2312 \
iso2022 ISO-2022 \
iso2022-jp ISO-2022-JP \
iso2022-kr ISO-2022-KR \
iso8859-1 ISO-8859-1 \
iso8859-2 ISO-8859-2 \
iso8859-3 ISO-8859-3 \
iso8859-4 ISO-8859-4 \
iso8859-5 ISO-8859-5 \
iso8859-6 ISO-8859-6 \
iso8859-7 ISO-8859-7 \
iso8859-8 ISO-8859-8 \
iso8859-9 ISO-8859-9 \
iso8859-10 ISO-8859-10 \
iso8859-13 ISO-8859-13 \
iso8859-14 ISO-8859-14 \
iso8859-15 ISO-8859-15 \
iso8859-16 ISO-8859-16 \
jis0201 JIS_X0201 \
jis0208 JIS_C6226-1983 \
jis0212 JIS_X0212-1990 \
koi8-r KOI8-R \
koi8-u KOI8-U \
ksc5601 KS_C_5601-1987 \
macCentEuro "" \
macCroatian "" \
macCyrillic "" \
macDingbats "" \
macGreek "" \
macIceland "" \
macJapan "" \
macRoman "" \
macRomania "" \
macThai "" \
macTurkish "" \
macUkraine "" \
shiftjis Shift_JIS \
symbol "" \
tis-620 TIS-620 \
unicode "" \
utf-8 UTF-8]
variable encodings
array set encodings $encList
variable reversemap
foreach {enc mimeType} $encList {
if {$mimeType != ""} {
set reversemap([string tolower $mimeType]) $enc
}
}
set encAliasList [list \
ascii ANSI_X3.4-1968 \
ascii iso-ir-6 \
ascii ANSI_X3.4-1986 \
ascii ISO_646.irv:1991 \
ascii ASCII \
ascii ISO646-US \
ascii us \
ascii IBM367 \
ascii cp367 \
cp437 cp437 \
cp437 437 \
cp775 cp775 \
cp850 cp850 \
cp850 850 \
cp852 cp852 \
cp852 852 \
cp855 cp855 \
cp855 855 \
cp857 cp857 \
cp857 857 \
cp860 cp860 \
cp860 860 \
cp861 cp861 \
cp861 861 \
cp861 cp-is \
cp862 cp862 \
cp862 862 \
cp863 cp863 \
cp863 863 \
cp864 cp864 \
cp865 cp865 \
cp865 865 \
cp866 cp866 \
cp866 866 \
cp869 cp869 \
cp869 869 \
cp869 cp-gr \
cp936 CP936 \
cp936 MS936 \
cp936 Windows-936 \
iso8859-1 ISO_8859-1:1987 \
iso8859-1 iso-ir-100 \
iso8859-1 ISO_8859-1 \
iso8859-1 latin1 \
iso8859-1 l1 \
iso8859-1 IBM819 \
iso8859-1 CP819 \
iso8859-2 ISO_8859-2:1987 \
iso8859-2 iso-ir-101 \
iso8859-2 ISO_8859-2 \
iso8859-2 latin2 \
iso8859-2 l2 \
iso8859-3 ISO_8859-3:1988 \
iso8859-3 iso-ir-109 \
iso8859-3 ISO_8859-3 \
iso8859-3 latin3 \
iso8859-3 l3 \
iso8859-4 ISO_8859-4:1988 \
iso8859-4 iso-ir-110 \
iso8859-4 ISO_8859-4 \
iso8859-4 latin4 \
iso8859-4 l4 \
iso8859-5 ISO_8859-5:1988 \
iso8859-5 iso-ir-144 \
iso8859-5 ISO_8859-5 \
iso8859-5 cyrillic \
iso8859-6 ISO_8859-6:1987 \
iso8859-6 iso-ir-127 \
iso8859-6 ISO_8859-6 \
iso8859-6 ECMA-114 \
iso8859-6 ASMO-708 \
iso8859-6 arabic \
iso8859-7 ISO_8859-7:1987 \
iso8859-7 iso-ir-126 \
iso8859-7 ISO_8859-7 \
iso8859-7 ELOT_928 \
iso8859-7 ECMA-118 \
iso8859-7 greek \
iso8859-7 greek8 \
iso8859-8 ISO_8859-8:1988 \
iso8859-8 iso-ir-138 \
iso8859-8 ISO_8859-8 \
iso8859-8 hebrew \
iso8859-9 ISO_8859-9:1989 \
iso8859-9 iso-ir-148 \
iso8859-9 ISO_8859-9 \
iso8859-9 latin5 \
iso8859-9 l5 \
iso8859-10 iso-ir-157 \
iso8859-10 l6 \
iso8859-10 ISO_8859-10:1992 \
iso8859-10 latin6 \
iso8859-14 iso-ir-199 \
iso8859-14 ISO_8859-14:1998 \
iso8859-14 ISO_8859-14 \
iso8859-14 latin8 \
iso8859-14 iso-celtic \
iso8859-14 l8 \
iso8859-15 ISO_8859-15 \
iso8859-15 Latin-9 \
iso8859-16 iso-ir-226 \
iso8859-16 ISO_8859-16:2001 \
iso8859-16 ISO_8859-16 \
iso8859-16 latin10 \
iso8859-16 l10 \
jis0201 X0201 \
jis0208 iso-ir-87 \
jis0208 x0208 \
jis0208 JIS_X0208-1983 \
jis0212 x0212 \
jis0212 iso-ir-159 \
ksc5601 iso-ir-149 \
ksc5601 KS_C_5601-1989 \
ksc5601 KSC5601 \
ksc5601 korean \
shiftjis MS_Kanji \
utf-8 UTF8]
foreach {enc mimeType} $encAliasList {
set reversemap([string tolower $mimeType]) $enc
}
namespace export initialize finalize getproperty \
getheader setheader \
getbody \
copymessage \
mapencoding \
reversemapencoding \
parseaddress \
parsedatetime \
uniqueID
}
# ::mime::initialize --
#
# Creates a MIME part, and returnes the MIME token for that part.
#
# Arguments:
# args Args can be any one of the following:
# ?-canonical type/subtype
# ?-param {key value}?...
# ?-encoding value?
# ?-header {key value}?... ?
# (-file name | -string value | -parts {token1 ... tokenN})
#
# If the -canonical option is present, then the body is in
# canonical (raw) form and is found by consulting either the -file,
# -string, or -part option.
#
# In addition, both the -param and -header options may occur zero
# or more times to specify "Content-Type" parameters (e.g.,
# "charset") and header keyword/values (e.g.,
# "Content-Disposition"), respectively.
#
# Also, -encoding, if present, specifies the
# "Content-Transfer-Encoding" when copying the body.
#
# If the -canonical option is not present, then the MIME part
# contained in either the -file or the -string option is parsed,
# dynamically generating subordinates as appropriate.
#
# Results:
# An initialized mime token.
proc ::mime::initialize {args} {
global errorCode errorInfo
variable mime
set token [namespace current]::[incr mime(uid)]
# FRINK: nocheck
variable $token
upvar 0 $token state
if {[set code [catch { eval [linsert $args 0 mime::initializeaux $token] } \
result]]} {
set ecode $errorCode
set einfo $errorInfo
catch { mime::finalize $token -subordinates dynamic }
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
return $token
}
# ::mime::initializeaux --
#
# Configures the MIME token created in mime::initialize based on
# the arguments that mime::initialize supports.
#
# Arguments:
# token The MIME token to configure.
# args Args can be any one of the following:
# ?-canonical type/subtype
# ?-param {key value}?...
# ?-encoding value?
# ?-header {key value}?... ?
# (-file name | -string value | -parts {token1 ... tokenN})
#
# Results:
# Either configures the mime token, or throws an error.
proc ::mime::initializeaux {token args} {
global errorCode errorInfo
# FRINK: nocheck
variable $token
upvar 0 $token state
array set params [set state(params) ""]
set state(encoding) ""
set state(version) "1.0"
set state(header) ""
set state(lowerL) ""
set state(mixedL) ""
set state(cid) 0
set argc [llength $args]
for {set argx 0} {$argx < $argc} {incr argx} {
set option [lindex $args $argx]
if {[incr argx] >= $argc} {
error "missing argument to $option"
}
set value [lindex $args $argx]
switch -- $option {
-canonical {
set state(content) [string tolower $value]
}
-param {
if {[llength $value] != 2} {
error "-param expects a key and a value, not $value"
}
set lower [string tolower [set mixed [lindex $value 0]]]
if {[info exists params($lower)]} {
error "the $mixed parameter may be specified at most once"
}
set params($lower) [lindex $value 1]
set state(params) [array get params]
}
-encoding {
switch -- [set state(encoding) [string tolower $value]] {
7bit - 8bit - binary - quoted-printable - base64 {
}
default {
error "unknown value for -encoding $state(encoding)"
}
}
}
-header {
if {[llength $value] != 2} {
error "-header expects a key and a value, not $value"
}
set lower [string tolower [set mixed [lindex $value 0]]]
if {![string compare $lower content-type]} {
error "use -canonical instead of -header $value"
}
if {![string compare $lower content-transfer-encoding]} {
error "use -encoding instead of -header $value"
}
if {(![string compare $lower content-md5]) \
|| (![string compare $lower mime-version])} {
error "don't go there..."
}
if {[lsearch -exact $state(lowerL) $lower] < 0} {
lappend state(lowerL) $lower
lappend state(mixedL) $mixed
}
array set header $state(header)
lappend header($lower) [lindex $value 1]
set state(header) [array get header]
}
-file {
set state(file) $value
}
-parts {
set state(parts) $value
}
-string {
set state(string) $value
set state(lines) [split $value "\n"]
set state(lines.count) [llength $state(lines)]
set state(lines.current) 0
}
-root {
# the following are internal options
set state(root) $value
}
-offset {
set state(offset) $value
}
-count {
set state(count) $value
}
-lineslist {
set state(lines) $value
set state(lines.count) [llength $state(lines)]
set state(lines.current) 0
#state(string) is needed, but will be built when required
set state(string) ""
}
default {
error "unknown option $option"
}
}
}
#We only want one of -file, -parts or -string:
set valueN 0
foreach value [list file parts string] {
if {[info exists state($value)]} {
set state(value) $value
incr valueN
}
}
if {$valueN != 1 && ![info exists state(lines)]} {
error "specify exactly one of -file, -parts, or -string"
}
if {[set state(canonicalP) [info exists state(content)]]} {
switch -- $state(value) {
file {
set state(offset) 0
}
parts {
switch -glob -- $state(content) {
text/*
-
image/*
-
audio/*
-
video/* {
error "-canonical $state(content) and -parts do not mix"
}
default {
if {[string compare $state(encoding) ""]} {
error "-encoding and -parts do not mix"
}
}
}
}
default {# Go ahead}
}
if {[lsearch -exact $state(lowerL) content-id] < 0} {
lappend state(lowerL) content-id
lappend state(mixedL) Content-ID
array set header $state(header)
lappend header(content-id) [uniqueID]
set state(header) [array get header]
}
set state(version) 1.0
return
}
if {[string compare $state(params) ""]} {
error "-param requires -canonical"
}
if {[string compare $state(encoding) ""]} {
error "-encoding requires -canonical"
}
if {[string compare $state(header) ""]} {
error "-header requires -canonical"
}
if {[info exists state(parts)]} {
error "-parts requires -canonical"
}
if {[set fileP [info exists state(file)]]} {
if {[set openP [info exists state(root)]]} {
# FRINK: nocheck
variable $state(root)
upvar 0 $state(root) root
set state(fd) $root(fd)
} else {
set state(root) $token
set state(fd) [open $state(file) { RDONLY }]
set state(offset) 0
seek $state(fd) 0 end
set state(count) [tell $state(fd)]
fconfigure $state(fd) -translation binary
}
}
set code [catch { mime::parsepart $token } result]
set ecode $errorCode
set einfo $errorInfo
if {$fileP} {
if {!$openP} {
unset state(root)
catch { close $state(fd) }
}
unset state(fd)
}
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
# ::mime::parsepart --
#
# Parses the MIME headers and attempts to break up the message
# into its various parts, creating a MIME token for each part.
#
# Arguments:
# token The MIME token to parse.
#
# Results:
# Throws an error if it has problems parsing the MIME token,
# otherwise it just sets up the appropriate variables.
proc ::mime::parsepart {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
if {[set fileP [info exists state(file)]]} {
seek $state(fd) [set pos $state(offset)] start
set last [expr {$state(offset)+$state(count)-1}]
} else {
set string $state(string)
}
set vline ""
while {1} {
set blankP 0
if {$fileP} {
if {($pos > $last) || ([set x [gets $state(fd) line]] <= 0)} {
set blankP 1
} else {
incr pos [expr {$x+1}]
}
} else {
if { $state(lines.current) >= $state(lines.count) } {
set blankP 1
set line ""
} else {
set line [lindex $state(lines) $state(lines.current)]
incr state(lines.current)
set x [string length $line]
if { $x == 0 } { set blankP 1 }
}
}
if {(!$blankP) && ([string last "\r" $line] == [expr {$x-1}])} {
set line [string range $line 0 [expr {$x-2}]]
if {$x == 1} {
set blankP 1
}
}
if {(!$blankP) \
&& (([string first " " $line] == 0) \
|| ([string first "\t" $line] == 0))} {
append vline "\n" $line
continue
}
if {![string compare $vline ""]} {
if {$blankP} {
break
}
set vline $line
continue
}
if {([set x [string first ":" $vline]] <= 0) \
|| (![string compare \
[set mixed \
[string trimright \
[string range \
$vline 0 [expr {$x-1}]]]] \
""])} {
error "improper line in header: $vline"
}
set value [string trim [string range $vline [expr {$x+1}] end]]
switch -- [set lower [string tolower $mixed]] {
content-type {
if {[info exists state(content)]} {
error "multiple Content-Type fields starting with $vline"
}
if {![catch { set x [parsetype $token $value] }]} {
set state(content) [lindex $x 0]
set state(params) [lindex $x 1]
}
}
content-md5 {
}
content-transfer-encoding {
if {([string compare $state(encoding) ""]) \
&& ([string compare $state(encoding) \
[string tolower $value]])} {
error "multiple Content-Transfer-Encoding fields starting with $vline"
}
set state(encoding) [string tolower $value]
}
mime-version {
set state(version) $value
}
default {
if {[lsearch -exact $state(lowerL) $lower] < 0} {
lappend state(lowerL) $lower
lappend state(mixedL) $mixed
}
array set header $state(header)
lappend header($lower) $value
set state(header) [array get header]
}
}
if {$blankP} {
break
}
set vline $line
}
if {![info exists state(content)]} {
set state(content) text/plain
set state(params) [list charset us-ascii]
}
if {![string match multipart/* $state(content)]} {
if {$fileP} {
set x [tell $state(fd)]
incr state(count) [expr {$state(offset)-$x}]
set state(offset) $x
} else {
# rebuild string, this is cheap and needed by other functions
set state(string) [join [lrange $state(lines) \
$state(lines.current) end] "\n"]
}
if {[string match message/* $state(content)]} {
# FRINK: nocheck
variable [set child $token-[incr state(cid)]]
set state(value) parts
set state(parts) $child
if {$fileP} {
mime::initializeaux $child \
-file $state(file) -root $state(root) \
-offset $state(offset) -count $state(count)
} else {
mime::initializeaux $child \
-lineslist [lrange $state(lines) \
$state(lines.current) end]
}
}
return
}
set state(value) parts
set boundary ""
foreach {k v} $state(params) {
if {![string compare $k boundary]} {
set boundary $v
break
}
}
if {![string compare $boundary ""]} {
error "boundary parameter is missing in $state(content)"
}
if {![string compare [string trim $boundary] ""]} {
error "boundary parameter is empty in $state(content)"
}
if {$fileP} {
set pos [tell $state(fd)]
# This variable is like 'start', for the reasons laid out
# below, in the other branch of this conditional.
set initialpos $pos
} else {
# This variable is like 'start', a list of lines in the
# part. This record is made even before we find a starting
# boundary and used if we run into the terminating boundary
# before a starting boundary was found. In that case the lines
# before the terminator as recorded by tracelines are seen as
# the part, or at least we attempt to parse them as a
# part. See the forceoctet and nochild flags later. We cannot
# use 'start' as that records lines only after the starting
# boundary was found.
set tracelines [list]
}
set inP 0
set moreP 1
set forceoctet 0
while {$moreP} {
if {$fileP} {
if {$pos > $last} {
# We have run over the end of the part per the outer
# information without finding a terminating boundary.
# We now fake the boundary and force the parser to
# give any new part coming of this a mime-type of
# application/octet-stream regardless of header
# information.
set line "--$boundary--"
set x [string length $line]
set forceoctet 1
} else {
if {[set x [gets $state(fd) line]] < 0} {
error "end-of-file encountered while parsing $state(content)"
}
}
incr pos [expr {$x+1}]
} else {
if { $state(lines.current) >= $state(lines.count) } {
error "end-of-string encountered while parsing $state(content)"
} else {
set line [lindex $state(lines) $state(lines.current)]
incr state(lines.current)
set x [string length $line]
}
set x [string length $line]
}
if {[string last "\r" $line] == [expr {$x-1}]} {
set line [string range $line 0 [expr {$x-2}]]
set crlf 2
} else {
set crlf 1
}
if {[string first "--$boundary" $line] != 0} {
if {$inP && !$fileP} {
lappend start $line
}
continue
} else {
lappend tracelines $line
}
if {!$inP} {
# Haven't seen the starting boundary yet. Check if the
# current line contains this starting boundary.
if {[string equal $line "--$boundary"]} {
# Yes. Switch parser state to now search for the
# terminating boundary of the part and record where
# the part begins (or initialize the recorder for the
# lines in the part).
set inP 1
if {$fileP} {
set start $pos
} else {
set start [list]
}
continue
} elseif {[string equal $line "--$boundary--"]} {
# We just saw a terminating boundary before we ever
# saw the starting boundary of a part. This forces us
# to stop parsing, we do this by forcing the parser
# into an accepting state. We will try to create a
# child part based on faked start position or recorded
# lines, or, if that fails, let the current part have
# no children.
# As an example note the test case mime-3.7 and the
# referenced file "badmail1.txt".
set inP 1
if {$fileP} {
set start $initialpos
} else {
set start $tracelines
}
set forceoctet 1
# Fall through. This brings to the creation of the new
# part instead of searching further and possible
# running over the end.
} else {
continue
}
}
# Looking for the end of the current part. We accept both a
# terminating boundary and the starting boundary of the next
# part as the end of the current part.
if {([set moreP [string compare $line "--$boundary--"]]) \
&& ([string compare $line "--$boundary"])} {
# The current part has not ended, so we record the line
# if we are inside a part and doing string parsing.
if {$inP && !$fileP} {
lappend start $line
}
continue
}
# The current part has ended. We now determine the exact
# boundaries, create a mime part object for it and recursively
# parse it deeper as part of that action.
# FRINK: nocheck
variable [set child $token-[incr state(cid)]]
lappend state(parts) $child
set nochild 0
if {$fileP} {
if {[set count [expr {$pos-($start+$x+$crlf+1)}]] < 0} {
set count 0
}
if {$forceoctet} {
set ::errorInfo {}
if {[catch {
mime::initializeaux $child \
-file $state(file) -root $state(root) \
-offset $start -count $count
}]} {
set nochild 1
set state(parts) [lrange $state(parts) 0 end-1]
}
} else {
mime::initializeaux $child \
-file $state(file) -root $state(root) \
-offset $start -count $count
}
seek $state(fd) [set start $pos] start
} else {
if {$forceoctet} {
if {[catch {
mime::initializeaux $child -lineslist $start
}]} {
set nochild 1
set state(parts) [lrange $state(parts) 0 end-1]
}
} else {
mime::initializeaux $child -lineslist $start
}
set start ""
}
if {$forceoctet && !$nochild} {
variable $child
upvar 0 $child childstate
set childstate(content) application/octet-stream
}
set forceoctet 0
}
}
# ::mime::parsetype --
#
# Parses the string passed in and identifies the content-type and
# params strings.
#
# Arguments:
# token The MIME token to parse.
# string The content-type string that should be parsed.
#
# Results:
# Returns the content and params for the string as a two element
# tcl list.
proc ::mime::parsetype {token string} {
global errorCode errorInfo
# FRINK: nocheck
variable $token
upvar 0 $token state
variable typetokenL
variable typelexemeL
set state(input) $string
set state(buffer) ""
set state(lastC) LX_END
set state(comment) ""
set state(tokenL) $typetokenL
set state(lexemeL) $typelexemeL
set code [catch { mime::parsetypeaux $token $string } result]
set ecode $errorCode
set einfo $errorInfo
unset state(input) \
state(buffer) \
state(lastC) \
state(comment) \
state(tokenL) \
state(lexemeL)
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
# ::mime::parsetypeaux --
#
# A helper function for mime::parsetype. Parses the specified
# string looking for the content type and params.
#
# Arguments:
# token The MIME token to parse.
# string The content-type string that should be parsed.
#
# Results:
# Returns the content and params for the string as a two element
# tcl list.
proc ::mime::parsetypeaux {token string} {
# FRINK: nocheck
variable $token
upvar 0 $token state
if {[string compare [parselexeme $token] LX_ATOM]} {
error [format "expecting type (found %s)" $state(buffer)]
}
set type [string tolower $state(buffer)]
switch -- [parselexeme $token] {
LX_SOLIDUS {
}
LX_END {
if {[string compare $type message]} {
error "expecting type/subtype (found $type)"
}
return [list message/rfc822 ""]
}
default {
error [format "expecting \"/\" (found %s)" $state(buffer)]
}
}
if {[string compare [parselexeme $token] LX_ATOM]} {
error [format "expecting subtype (found %s)" $state(buffer)]
}
append type [string tolower /$state(buffer)]
array set params ""
while {1} {
switch -- [parselexeme $token] {
LX_END {
return [list $type [array get params]]
}
LX_SEMICOLON {
}
default {
error [format "expecting \";\" (found %s)" $state(buffer)]
}
}
switch -- [parselexeme $token] {
LX_END {
return [list $type [array get params]]
}
LX_ATOM {
}
default {
error [format "expecting attribute (found %s)" $state(buffer)]
}
}
set attribute [string tolower $state(buffer)]
if {[string compare [parselexeme $token] LX_EQUALS]} {
error [format "expecting \"=\" (found %s)" $state(buffer)]
}
switch -- [parselexeme $token] {
LX_ATOM {
}
LX_QSTRING {
set state(buffer) \
[string range $state(buffer) 1 \
[expr {[string length $state(buffer)]-2}]]
}
default {
error [format "expecting value (found %s)" $state(buffer)]
}
}
set params($attribute) $state(buffer)
}
}
# ::mime::finalize --
#
# mime::finalize destroys a MIME part.
#
# If the -subordinates option is present, it specifies which
# subordinates should also be destroyed. The default value is
# "dynamic".
#
# Arguments:
# token The MIME token to parse.
# args Args can be optionally be of the following form:
# ?-subordinates "all" | "dynamic" | "none"?
#
# Results:
# Returns an empty string.
proc ::mime::finalize {token args} {
# FRINK: nocheck
variable $token
upvar 0 $token state
array set options [list -subordinates dynamic]
array set options $args
switch -- $options(-subordinates) {
all {
if {![string compare $state(value) parts]} {
foreach part $state(parts) {
eval [linsert $args 0 mime::finalize $part]
}
}
}
dynamic {
for {set cid $state(cid)} {$cid > 0} {incr cid -1} {
eval [linsert $args 0 mime::finalize $token-$cid]
}
}
none {
}
default {
error "unknown value for -subordinates $options(-subordinates)"
}
}
foreach name [array names state] {
unset state($name)
}
# FRINK: nocheck
unset $token
}
# ::mime::getproperty --
#
# mime::getproperty returns the properties of a MIME part.
#
# The properties are:
#
# property value
# ======== =====
# content the type/subtype describing the content
# encoding the "Content-Transfer-Encoding"
# params a list of "Content-Type" parameters
# parts a list of tokens for the part's subordinates
# size the approximate size of the content (unencoded)
#
# The "parts" property is present only if the MIME part has
# subordinates.
#
# If mime::getproperty is invoked with the name of a specific
# property, then the corresponding value is returned; instead, if
# -names is specified, a list of all properties is returned;
# otherwise, a serialized array of properties and values is returned.
#
# Arguments:
# token The MIME token to parse.
# property One of 'content', 'encoding', 'params', 'parts', and
# 'size'. Defaults to returning a serialized array of
# properties and values.
#
# Results:
# Returns the properties of a MIME part
proc ::mime::getproperty {token {property ""}} {
# FRINK: nocheck
variable $token
upvar 0 $token state
switch -- $property {
"" {
array set properties [list content $state(content) \
encoding $state(encoding) \
params $state(params) \
size [getsize $token]]
if {[info exists state(parts)]} {
set properties(parts) $state(parts)
}
return [array get properties]
}
-names {
set names [list content encoding params]
if {[info exists state(parts)]} {
lappend names parts
}
return $names
}
content
-
encoding
-
params {
return $state($property)
}
parts {
if {![info exists state(parts)]} {
error "MIME part is a leaf"
}
return $state(parts)
}
size {
return [getsize $token]
}
default {
error "unknown property $property"
}
}
}
# ::mime::getsize --
#
# Determine the size (in bytes) of a MIME part/token
#
# Arguments:
# token The MIME token to parse.
#
# Results:
# Returns the size in bytes of the MIME token.
proc ::mime::getsize {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
switch -- $state(value)/$state(canonicalP) {
file/0 {
set size $state(count)
}
file/1 {
return [file size $state(file)]
}
parts/0
-
parts/1 {
set size 0
foreach part $state(parts) {
incr size [getsize $part]
}
return $size
}
string/0 {
set size [string length $state(string)]
}
string/1 {
return [string length $state(string)]
}
default {
error "Unknown combination \"$state(value)/$state(canonicalP)\""
}
}
if {![string compare $state(encoding) base64]} {
set size [expr {($size*3+2)/4}]
}
return $size
}
# ::mime::getheader --
#
# mime::getheader returns the header of a MIME part.
#
# A header consists of zero or more key/value pairs. Each value is a
# list containing one or more strings.
#
# If mime::getheader is invoked with the name of a specific key, then
# a list containing the corresponding value(s) is returned; instead,
# if -names is specified, a list of all keys is returned; otherwise, a
# serialized array of keys and values is returned. Note that when a
# key is specified (e.g., "Subject"), the list returned usually
# contains exactly one string; however, some keys (e.g., "Received")
# often occur more than once in the header, accordingly the list
# returned usually contains more than one string.
#
# Arguments:
# token The MIME token to parse.
# key Either a key or '-names'. If it is '-names' a list
# of all keys is returned.
#
# Results:
# Returns the header of a MIME part.
proc ::mime::getheader {token {key ""}} {
# FRINK: nocheck
variable $token
upvar 0 $token state
array set header $state(header)
switch -- $key {
"" {
set result ""
foreach lower $state(lowerL) mixed $state(mixedL) {
lappend result $mixed $header($lower)
}
return $result
}
-names {
return $state(mixedL)
}
default {
set lower [string tolower [set mixed $key]]
if {![info exists header($lower)]} {
error "key $mixed not in header"
}
return $header($lower)
}
}
}
# ::mime::setheader --
#
# mime::setheader writes, appends to, or deletes the value associated
# with a key in the header.
#
# The value for -mode is one of:
#
# write: the key/value is either created or overwritten (the
# default);
#
# append: a new value is appended for the key (creating it as
# necessary); or,
#
# delete: all values associated with the key are removed (the
# "value" parameter is ignored).
#
# Regardless, mime::setheader returns the previous value associated
# with the key.
#
# Arguments:
# token The MIME token to parse.
# key The name of the key whose value should be set.
# value The value for the header key to be set to.
# args An optional argument of the form:
# ?-mode "write" | "append" | "delete"?
#
# Results:
# Returns previous value associated with the specified key.
proc ::mime::setheader {token key value args} {
# FRINK: nocheck
variable $token
upvar 0 $token state
array set options [list -mode write]
array set options $args
switch -- [set lower [string tolower $key]] {
content-md5
-
content-type
-
content-transfer-encoding
-
mime-version {
error "key $key may not be set"
}
default {# Skip key}
}
array set header $state(header)
if {[set x [lsearch -exact $state(lowerL) $lower]] < 0} {
if {![string compare $options(-mode) delete]} {
error "key $key not in header"
}
lappend state(lowerL) $lower
lappend state(mixedL) $key
set result ""
} else {
set result $header($lower)
}
switch -- $options(-mode) {
append {
lappend header($lower) $value
}
delete {
unset header($lower)
set state(lowerL) [lreplace $state(lowerL) $x $x]
set state(mixedL) [lreplace $state(mixedL) $x $x]
}
write {
set header($lower) [list $value]
}
default {
error "unknown value for -mode $options(-mode)"
}
}
set state(header) [array get header]
return $result
}
# ::mime::getbody --
#
# mime::getbody returns the body of a leaf MIME part in canonical form.
#
# If the -command option is present, then it is repeatedly invoked
# with a fragment of the body as this:
#
# uplevel #0 $callback [list "data" $fragment]
#
# (The -blocksize option, if present, specifies the maximum size of
# each fragment passed to the callback.)
# When the end of the body is reached, the callback is invoked as:
#
# uplevel #0 $callback "end"
#
# Alternatively, if an error occurs, the callback is invoked as:
#
# uplevel #0 $callback [list "error" reason]
#
# Regardless, the return value of the final invocation of the callback
# is propagated upwards by mime::getbody.
#
# If the -command option is absent, then the return value of
# mime::getbody is a string containing the MIME part's entire body.
#
# Arguments:
# token The MIME token to parse.
# args Optional arguments of the form:
# ?-decode? ?-command callback ?-blocksize octets? ?
#
# Results:
# Returns a string containing the MIME part's entire body, or
# if '-command' is specified, the return value of the command
# is returned.
proc ::mime::getbody {token args} {
global errorCode errorInfo
# FRINK: nocheck
variable $token
upvar 0 $token state
set decode 0
if {[set pos [lsearch -exact $args -decode]] >= 0} {
set decode 1
set args [lreplace $args $pos $pos]
}
array set options [list -command [list mime::getbodyaux $token] \
-blocksize 4096]
array set options $args
if {$options(-blocksize) < 1} {
error "-blocksize expects a positive integer, not $options(-blocksize)"
}
set code 0
set ecode ""
set einfo ""
switch -- $state(value)/$state(canonicalP) {
file/0 {
set fd [open $state(file) { RDONLY }]
set code [catch {
fconfigure $fd -translation binary
seek $fd [set pos $state(offset)] start
set last [expr {$state(offset)+$state(count)-1}]
set fragment ""
while {$pos <= $last} {
if {[set cc [expr {($last-$pos)+1}]] \
> $options(-blocksize)} {
set cc $options(-blocksize)
}
incr pos [set len \
[string length [set chunk [read $fd $cc]]]]
switch -exact -- $state(encoding) {
base64
-
quoted-printable {
if {([set x [string last "\n" $chunk]] > 0) \
&& ($x+1 != $len)} {
set chunk [string range $chunk 0 $x]
seek $fd [incr pos [expr {($x+1)-$len}]] start
}
set chunk [$state(encoding) -mode decode \
-- $chunk]
}
7bit - 8bit - binary - "" {
# Bugfix for [#477088]
# Go ahead, leave chunk alone
}
default {
error "Can't handle content encoding \"$state(encoding)\""
}
}
append fragment $chunk
set cc [expr {$options(-blocksize)-1}]
while {[string length $fragment] > $options(-blocksize)} {
uplevel #0 $options(-command) \
[list data \
[string range $fragment 0 $cc]]
set fragment [string range \
$fragment $options(-blocksize) \
end]
}
}
if {[string length $fragment] > 0} {
uplevel #0 $options(-command) [list data $fragment]
}
} result]
set ecode $errorCode
set einfo $errorInfo
catch { close $fd }
}
file/1 {
set fd [open $state(file) { RDONLY }]
set code [catch {
fconfigure $fd -translation binary
while {[string length \
[set fragment \
[read $fd $options(-blocksize)]]] > 0} {
uplevel #0 $options(-command) [list data $fragment]
}
} result]
set ecode $errorCode
set einfo $errorInfo
catch { close $fd }
}
parts/0
-
parts/1 {
error "MIME part isn't a leaf"
}
string/0
-
string/1 {
switch -- $state(encoding)/$state(canonicalP) {
base64/0
-
quoted-printable/0 {
set fragment [$state(encoding) -mode decode \
-- $state(string)]
}
default {
# Not a bugfix for [#477088], but clarification
# This handles no-encoding, 7bit, 8bit, and binary.
set fragment $state(string)
}
}
set code [catch {
set cc [expr {$options(-blocksize)-1}]
while {[string length $fragment] > $options(-blocksize)} {
uplevel #0 $options(-command) \
[list data [string range $fragment 0 $cc]]
set fragment [string range $fragment \
$options(-blocksize) end]
}
if {[string length $fragment] > 0} {
uplevel #0 $options(-command) [list data $fragment]
}
} result]
set ecode $errorCode
set einfo $errorInfo
}
default {
error "Unknown combination \"$state(value)/$state(canonicalP)\""
}
}
set code [catch {
if {$code} {
uplevel #0 $options(-command) [list error $result]
} else {
uplevel #0 $options(-command) [list end]
}
} result]
set ecode $errorCode
set einfo $errorInfo
if {$code} {
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
if {$decode} {
array set params [mime::getproperty $token params]
if {[info exists params(charset)]} {
set charset $params(charset)
} else {
set charset US-ASCII
}
set enc [reversemapencoding $charset]
if {$enc != ""} {
set result [::encoding convertfrom $enc $result]
} else {
return -code error "-decode failed: can't reversemap charset $charset"
}
}
return $result
}
# ::mime::getbodyaux --
#
# Builds up the body of the message, fragment by fragment. When
# the entire message has been retrieved, it is returned.
#
# Arguments:
# token The MIME token to parse.
# reason One of 'data', 'end', or 'error'.
# fragment The section of data data fragment to extract a
# string from.
#
# Results:
# Returns nothing, except when called with the 'end' argument
# in which case it returns a string that contains all of the
# data that 'getbodyaux' has been called with. Will throw an
# error if it is called with the reason of 'error'.
proc ::mime::getbodyaux {token reason {fragment ""}} {
# FRINK: nocheck
variable $token
upvar 0 $token state
switch -- $reason {
data {
append state(getbody) $fragment
return ""
}
end {
if {[info exists state(getbody)]} {
set result $state(getbody)
unset state(getbody)
} else {
set result ""
}
return $result
}
error {
catch { unset state(getbody) }
error $reason
}
default {
error "Unknown reason \"$reason\""
}
}
}
# ::mime::copymessage --
#
# mime::copymessage copies the MIME part to the specified channel.
#
# mime::copymessage operates synchronously, and uses fileevent to
# allow asynchronous operations to proceed independently.
#
# Arguments:
# token The MIME token to parse.
# channel The channel to copy the message to.
#
# Results:
# Returns nothing unless an error is thrown while the message
# is being written to the channel.
proc ::mime::copymessage {token channel} {
global errorCode errorInfo
# FRINK: nocheck
variable $token
upvar 0 $token state
set openP [info exists state(fd)]
set code [catch { mime::copymessageaux $token $channel } result]
set ecode $errorCode
set einfo $errorInfo
if {(!$openP) && ([info exists state(fd)])} {
if {![info exists state(root)]} {
catch { close $state(fd) }
}
unset state(fd)
}
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
# ::mime::copymessageaux --
#
# mime::copymessageaux copies the MIME part to the specified channel.
#
# Arguments:
# token The MIME token to parse.
# channel The channel to copy the message to.
#
# Results:
# Returns nothing unless an error is thrown while the message
# is being written to the channel.
proc ::mime::copymessageaux {token channel} {
# FRINK: nocheck
variable $token
upvar 0 $token state
array set header $state(header)
if {[string compare $state(version) ""]} {
puts $channel "MIME-Version: $state(version)"
}
foreach lower $state(lowerL) mixed $state(mixedL) {
foreach value $header($lower) {
puts $channel "$mixed: $value"
}
}
if {(!$state(canonicalP)) \
&& ([string compare [set encoding $state(encoding)] ""])} {
puts $channel "Content-Transfer-Encoding: $encoding"
}
puts -nonewline $channel "Content-Type: $state(content)"
set boundary ""
foreach {k v} $state(params) {
if {![string compare $k boundary]} {
set boundary $v
}
puts -nonewline $channel ";\n $k=\"$v\""
}
set converter ""
set encoding ""
if {[string compare $state(value) parts]} {
puts $channel ""
if {$state(canonicalP)} {
if {![string compare [set encoding $state(encoding)] ""]} {
set encoding [encoding $token]
}
if {[string compare $encoding ""]} {
puts $channel "Content-Transfer-Encoding: $encoding"
}
switch -- $encoding {
base64
-
quoted-printable {
set converter $encoding
}
7bit - 8bit - binary - "" {
# Bugfix for [#477088], also [#539952]
# Go ahead
}
default {
error "Can't handle content encoding \"$encoding\""
}
}
}
} elseif {([string match multipart/* $state(content)]) \
&& (![string compare $boundary ""])} {
# we're doing everything in one pass...
set key [clock seconds]$token[info hostname][array get state]
set seqno 8
while {[incr seqno -1] >= 0} {
set key [md5 -- $key]
}
set boundary "----- =_[string trim [base64 -mode encode -- $key]]"
puts $channel ";\n boundary=\"$boundary\""
} else {
puts $channel ""
}
if {[info exists state(error)]} {
unset state(error)
}
switch -- $state(value) {
file {
set closeP 1
if {[info exists state(root)]} {
# FRINK: nocheck
variable $state(root)
upvar 0 $state(root) root
if {[info exists root(fd)]} {
set fd $root(fd)
set closeP 0
} else {
set fd [set state(fd) \
[open $state(file) { RDONLY }]]
}
set size $state(count)
} else {
set fd [set state(fd) [open $state(file) { RDONLY }]]
# read until eof
set size -1
}
seek $fd $state(offset) start
if {$closeP} {
fconfigure $fd -translation binary
}
puts $channel ""
while {($size != 0) && (![eof $fd])} {
if {$size < 0 || $size > 32766} {
set X [read $fd 32766]
} else {
set X [read $fd $size]
}
if {$size > 0} {
set size [expr {$size - [string length $X]}]
}
if {[string compare $converter ""]} {
puts -nonewline $channel [$converter -mode encode -- $X]
} else {
puts -nonewline $channel $X
}
}
if {$closeP} {
catch { close $state(fd) }
unset state(fd)
}
}
parts {
if {(![info exists state(root)]) \
&& ([info exists state(file)])} {
set state(fd) [open $state(file) { RDONLY }]
fconfigure $state(fd) -translation binary
}
switch -glob -- $state(content) {
message/* {
puts $channel ""
foreach part $state(parts) {
mime::copymessage $part $channel
break
}
}
default {
# Note RFC 2046: See buildmessageaux for details.
foreach part $state(parts) {
puts $channel "\n--$boundary"
mime::copymessage $part $channel
}
puts $channel "\n--$boundary--"
}
}
if {[info exists state(fd)]} {
catch { close $state(fd) }
unset state(fd)
}
}
string {
if {[catch { fconfigure $channel -buffersize } blocksize]} {
set blocksize 4096
} elseif {$blocksize < 512} {
set blocksize 512
}
set blocksize [expr {($blocksize/4)*3}]
# [893516]
fconfigure $channel -buffersize $blocksize
puts $channel ""
if {[string compare $converter ""]} {
puts -nonewline $channel [$converter -mode encode -- $state(string)]
} else {
puts -nonewline $channel $state(string)
}
}
default {
error "Unknown value \"$state(value)\""
}
}
flush $channel
if {[info exists state(error)]} {
error $state(error)
}
}
# ::mime::buildmessage --
#
# The following is a clone of the copymessage code to build up the
# result in memory, and, unfortunately, without using a memory channel.
# I considered parameterizing the "puts" calls in copy message, but
# the need for this procedure may go away, so I'm living with it for
# the moment.
#
# Arguments:
# token The MIME token to parse.
#
# Results:
# Returns the message that has been built up in memory.
proc ::mime::buildmessage {token} {
global errorCode errorInfo
# FRINK: nocheck
variable $token
upvar 0 $token state
set openP [info exists state(fd)]
set code [catch { mime::buildmessageaux $token } result]
set ecode $errorCode
set einfo $errorInfo
if {(!$openP) && ([info exists state(fd)])} {
if {![info exists state(root)]} {
catch { close $state(fd) }
}
unset state(fd)
}
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
# ::mime::buildmessageaux --
#
# The following is a clone of the copymessageaux code to build up the
# result in memory, and, unfortunately, without using a memory channel.
# I considered parameterizing the "puts" calls in copy message, but
# the need for this procedure may go away, so I'm living with it for
# the moment.
#
# Arguments:
# token The MIME token to parse.
#
# Results:
# Returns the message that has been built up in memory.
proc ::mime::buildmessageaux {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
array set header $state(header)
set result ""
if {[string compare $state(version) ""]} {
append result "MIME-Version: $state(version)\r\n"
}
foreach lower $state(lowerL) mixed $state(mixedL) {
foreach value $header($lower) {
append result "$mixed: $value\r\n"
}
}
if {(!$state(canonicalP)) \
&& ([string compare [set encoding $state(encoding)] ""])} {
append result "Content-Transfer-Encoding: $encoding\r\n"
}
append result "Content-Type: $state(content)"
set boundary ""
foreach {k v} $state(params) {
if {![string compare $k boundary]} {
set boundary $v
}
append result ";\r\n $k=\"$v\""
}
set converter ""
set encoding ""
if {[string compare $state(value) parts]} {
append result \r\n
if {$state(canonicalP)} {
if {![string compare [set encoding $state(encoding)] ""]} {
set encoding [encoding $token]
}
if {[string compare $encoding ""]} {
append result "Content-Transfer-Encoding: $encoding\r\n"
}
switch -- $encoding {
base64
-
quoted-printable {
set converter $encoding
}
7bit - 8bit - binary - "" {
# Bugfix for [#477088]
# Go ahead
}
default {
error "Can't handle content encoding \"$encoding\""
}
}
}
} elseif {([string match multipart/* $state(content)]) \
&& (![string compare $boundary ""])} {
# we're doing everything in one pass...
set key [clock seconds]$token[info hostname][array get state]
set seqno 8
while {[incr seqno -1] >= 0} {
set key [md5 -- $key]
}
set boundary "----- =_[string trim [base64 -mode encode -- $key]]"
append result ";\r\n boundary=\"$boundary\"\r\n"
} else {
append result "\r\n"
}
if {[info exists state(error)]} {
unset state(error)
}
switch -- $state(value) {
file {
set closeP 1
if {[info exists state(root)]} {
# FRINK: nocheck
variable $state(root)
upvar 0 $state(root) root
if {[info exists root(fd)]} {
set fd $root(fd)
set closeP 0
} else {
set fd [set state(fd) \
[open $state(file) { RDONLY }]]
}
set size $state(count)
} else {
set fd [set state(fd) [open $state(file) { RDONLY }]]
set size -1 ;# Read until EOF
}
seek $fd $state(offset) start
if {$closeP} {
fconfigure $fd -translation binary
}
append result "\r\n"
while {($size != 0) && (![eof $fd])} {
if {$size < 0 || $size > 32766} {
set X [read $fd 32766]
} else {
set X [read $fd $size]
}
if {$size > 0} {
set size [expr {$size - [string length $X]}]
}
if {[string compare $converter ""]} {
append result [$converter -mode encode -- $X]
} else {
append result $X
}
}
if {$closeP} {
catch { close $state(fd) }
unset state(fd)
}
}
parts {
if {(![info exists state(root)]) \
&& ([info exists state(file)])} {
set state(fd) [open $state(file) { RDONLY }]
fconfigure $state(fd) -translation binary
}
switch -glob -- $state(content) {
message/* {
append result "\r\n"
foreach part $state(parts) {
append result [buildmessage $part]
break
}
}
default {
# Note RFC 2046:
#
# The boundary delimiter MUST occur at the
# beginning of a line, i.e., following a CRLF, and
# the initial CRLF is considered to be attached to
# the boundary delimiter line rather than part of
# the preceding part.
#
# - The above means that the CRLF before $boundary
# is needed per the RFC, and the parts must not
# have a closing CRLF of their own. See Tcllib bug
# 1213527, and patch 1254934 for the problems when
# both file/string brnaches added CRLF after the
# body parts.
foreach part $state(parts) {
append result "\r\n--$boundary\r\n"
append result [buildmessage $part]
}
append result "\r\n--$boundary--\r\n"
}
}
if {[info exists state(fd)]} {
catch { close $state(fd) }
unset state(fd)
}
}
string {
append result "\r\n"
if {[string compare $converter ""]} {
append result [$converter -mode encode -- $state(string)]
} else {
append result $state(string)
}
}
default {
error "Unknown value \"$state(value)\""
}
}
if {[info exists state(error)]} {
error $state(error)
}
return $result
}
# ::mime::encoding --
#
# Determines how a token is encoded.
#
# Arguments:
# token The MIME token to parse.
#
# Results:
# Returns the encoding of the message (the null string, base64,
# or quoted-printable).
proc ::mime::encoding {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
switch -glob -- $state(content) {
audio/*
-
image/*
-
video/* {
return base64
}
message/*
-
multipart/* {
return ""
}
default {# Skip}
}
set asciiP 1
set lineP 1
switch -- $state(value) {
file {
set fd [open $state(file) { RDONLY }]
fconfigure $fd -translation binary
while {[gets $fd line] >= 0} {
if {$asciiP} {
set asciiP [encodingasciiP $line]
}
if {$lineP} {
set lineP [encodinglineP $line]
}
if {(!$asciiP) && (!$lineP)} {
break
}
}
catch { close $fd }
}
parts {
return ""
}
string {
foreach line [split $state(string) "\n"] {
if {$asciiP} {
set asciiP [encodingasciiP $line]
}
if {$lineP} {
set lineP [encodinglineP $line]
}
if {(!$asciiP) && (!$lineP)} {
break
}
}
}
default {
error "Unknown value \"$state(value)\""
}
}
switch -glob -- $state(content) {
text/* {
if {!$asciiP} {
foreach {k v} $state(params) {
if {![string compare $k charset]} {
set v [string tolower $v]
if {([string compare $v us-ascii]) \
&& (![string match {iso-8859-[1-8]} $v])} {
return base64
}
break
}
}
}
if {!$lineP} {
return quoted-printable
}
}
default {
if {(!$asciiP) || (!$lineP)} {
return base64
}
}
}
return ""
}
# ::mime::encodingasciiP --
#
# Checks if a string is a pure ascii string, or if it has a non-standard
# form.
#
# Arguments:
# line The line to check.
#
# Results:
# Returns 1 if \r only occurs at the end of lines, and if all
# characters in the line are between the ASCII codes of 32 and 126.
proc ::mime::encodingasciiP {line} {
foreach c [split $line ""] {
switch -- $c {
" " - "\t" - "\r" - "\n" {
}
default {
binary scan $c c c
if {($c < 32) || ($c > 126)} {
return 0
}
}
}
}
if {([set r [string first "\r" $line]] < 0) \
|| ($r == [expr {[string length $line]-1}])} {
return 1
}
return 0
}
# ::mime::encodinglineP --
#
# Checks if a string is a line is valid to be processed.
#
# Arguments:
# line The line to check.
#
# Results:
# Returns 1 the line is less than 76 characters long, the line
# contains more characters than just whitespace, the line does
# not start with a '.', and the line does not start with 'From '.
proc ::mime::encodinglineP {line} {
if {([string length $line] > 76) \
|| ([string compare $line [string trimright $line]]) \
|| ([string first . $line] == 0) \
|| ([string first "From " $line] == 0)} {
return 0
}
return 1
}
# ::mime::fcopy --
#
# Appears to be unused.
#
# Arguments:
#
# Results:
#
proc ::mime::fcopy {token count {error ""}} {
# FRINK: nocheck
variable $token
upvar 0 $token state
if {[string compare $error ""]} {
set state(error) $error
}
set state(doneP) 1
}
# ::mime::scopy --
#
# Copy a portion of the contents of a mime token to a channel.
#
# Arguments:
# token The token containing the data to copy.
# channel The channel to write the data to.
# offset The location in the string to start copying
# from.
# len The amount of data to write.
# blocksize The block size for the write operation.
#
# Results:
# The specified portion of the string in the mime token is
# copied to the specified channel.
proc ::mime::scopy {token channel offset len blocksize} {
# FRINK: nocheck
variable $token
upvar 0 $token state
if {$len <= 0} {
set state(doneP) 1
fileevent $channel writable ""
return
}
if {[set cc $len] > $blocksize} {
set cc $blocksize
}
if {[catch { puts -nonewline $channel \
[string range $state(string) $offset \
[expr {$offset+$cc-1}]]
fileevent $channel writable \
[list mime::scopy $token $channel \
[incr offset $cc] \
[incr len -$cc] \
$blocksize]
} result]} {
set state(error) $result
set state(doneP) 1
fileevent $channel writable ""
}
return
}
# ::mime::qp_encode --
#
# Tcl version of quote-printable encode
#
# Arguments:
# string The string to quote.
# encoded_word Boolean value to determine whether or not encoded words
# (RFC 2047) should be handled or not. (optional)
#
# Results:
# The properly quoted string is returned.
proc ::mime::qp_encode {string {encoded_word 0} {no_softbreak 0}} {
# 8.1+ improved string manipulation routines used.
# Replace outlying characters, characters that would normally
# be munged by EBCDIC gateways, and special Tcl characters "[\]{}
# with =xx sequence
regsub -all -- \
{[\x00-\x08\x0B-\x1E\x21-\x24\x3D\x40\x5B-\x5E\x60\x7B-\xFF]} \
$string {[format =%02X [scan "\\&" %c]]} string
# Replace the format commands with their result
set string [subst -novariable $string]
# soft/hard newlines and other
# Funky cases for SMTP compatibility
set mapChars [list " \n" "=20\n" "\t\n" "=09\n" \
"\n\.\n" "\n=2E\n" "\nFrom " "\n=46rom "]
if {$encoded_word} {
# Special processing for encoded words (RFC 2047)
lappend mapChars " " "_"
}
set string [string map $mapChars $string]
# Break long lines - ugh
# Implementation of FR #503336
if {$no_softbreak} {
set result $string
} else {
set result ""
foreach line [split $string \n] {
while {[string length $line] > 72} {
set chunk [string range $line 0 72]
if {[regexp -- (=|=.)$ $chunk dummy end]} {
# Don't break in the middle of a code
set len [expr {72 - [string length $end]}]
set chunk [string range $line 0 $len]
incr len
set line [string range $line $len end]
} else {
set line [string range $line 73 end]
}
append result $chunk=\n
}
append result $line\n
}
# Trim off last \n, since the above code has the side-effect
# of adding an extra \n to the encoded string and return the
# result.
set result [string range $result 0 end-1]
}
# If the string ends in space or tab, replace with =xx
set lastChar [string index $result end]
if {$lastChar==" "} {
set result [string replace $result end end "=20"]
} elseif {$lastChar=="\t"} {
set result [string replace $result end end "=09"]
}
return $result
}
# ::mime::qp_decode --
#
# Tcl version of quote-printable decode
#
# Arguments:
# string The quoted-prinatble string to decode.
# encoded_word Boolean value to determine whether or not encoded words
# (RFC 2047) should be handled or not. (optional)
#
# Results:
# The decoded string is returned.
proc ::mime::qp_decode {string {encoded_word 0}} {
# 8.1+ improved string manipulation routines used.
# Special processing for encoded words (RFC 2047)
if {$encoded_word} {
# _ == \x20, even if SPACE occupies a different code position
set string [string map [list _ \u0020] $string]
}
# smash the white-space at the ends of lines since that must've been
# generated by an MUA.
regsub -all -- {[ \t]+\n} $string "\n" string
set string [string trimright $string " \t"]
# Protect the backslash for later subst and
# smash soft newlines, has to occur after white-space smash
# and any encoded word modification.
set string [string map [list "\\" "\\\\" "=\n" ""] $string]
# Decode specials
regsub -all -nocase {=([a-f0-9][a-f0-9])} $string {\\u00\1} string
# process \u unicode mapped chars
return [subst -novar -nocommand $string]
}
# ::mime::parseaddress --
#
# This was originally written circa 1982 in C. we're still using it
# because it recognizes virtually every buggy address syntax ever
# generated!
#
# mime::parseaddress takes a string containing one or more 822-style
# address specifications and returns a list of serialized arrays, one
# element for each address specified in the argument.
#
# Each serialized array contains these properties:
#
# property value
# ======== =====
# address local@domain
# comment 822-style comment
# domain the domain part (rhs)
# error non-empty on a parse error
# group this address begins a group
# friendly user-friendly rendering
# local the local part (lhs)
# memberP this address belongs to a group
# phrase the phrase part
# proper 822-style address specification
# route 822-style route specification (obsolete)
#
# Note that one or more of these properties may be empty.
#
# Arguments:
# string The address string to parse
#
# Results:
# Returns a list of serialized arrays, one element for each address
# specified in the argument.
proc ::mime::parseaddress {string} {
global errorCode errorInfo
variable mime
set token [namespace current]::[incr mime(uid)]
# FRINK: nocheck
variable $token
upvar 0 $token state
set code [catch { mime::parseaddressaux $token $string } result]
set ecode $errorCode
set einfo $errorInfo
foreach name [array names state] {
unset state($name)
}
# FRINK: nocheck
catch { unset $token }
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
# ::mime::parseaddressaux --
#
# This was originally written circa 1982 in C. we're still using it
# because it recognizes virtually every buggy address syntax ever
# generated!
#
# mime::parseaddressaux does the actually parsing for mime::parseaddress
#
# Each serialized array contains these properties:
#
# property value
# ======== =====
# address local@domain
# comment 822-style comment
# domain the domain part (rhs)
# error non-empty on a parse error
# group this address begins a group
# friendly user-friendly rendering
# local the local part (lhs)
# memberP this address belongs to a group
# phrase the phrase part
# proper 822-style address specification
# route 822-style route specification (obsolete)
#
# Note that one or more of these properties may be empty.
#
# Arguments:
# token The MIME token to work from.
# string The address string to parse
#
# Results:
# Returns a list of serialized arrays, one element for each address
# specified in the argument.
proc ::mime::parseaddressaux {token string} {
# FRINK: nocheck
variable $token
upvar 0 $token state
variable addrtokenL
variable addrlexemeL
set state(input) $string
set state(glevel) 0
set state(buffer) ""
set state(lastC) LX_END
set state(tokenL) $addrtokenL
set state(lexemeL) $addrlexemeL
set result ""
while {[addr_next $token]} {
if {[string compare [set tail $state(domain)] ""]} {
set tail @$state(domain)
} else {
set tail @[info hostname]
}
if {[string compare [set address $state(local)] ""]} {
append address $tail
}
if {[string compare $state(phrase) ""]} {
set state(phrase) [string trim $state(phrase) "\""]
foreach t $state(tokenL) {
if {[string first $t $state(phrase)] >= 0} {
set state(phrase) \"$state(phrase)\"
break
}
}
set proper "$state(phrase) <$address>"
} else {
set proper $address
}
if {![string compare [set friendly $state(phrase)] ""]} {
if {[string compare [set note $state(comment)] ""]} {
if {[string first "(" $note] == 0} {
set note [string trimleft [string range $note 1 end]]
}
if {[string last ")" $note] \
== [set len [expr {[string length $note]-1}]]} {
set note [string range $note 0 [expr {$len-1}]]
}
set friendly $note
}
if {(![string compare $friendly ""]) \
&& ([string compare [set mbox $state(local)] ""])} {
set mbox [string trim $mbox "\""]
if {[string first "/" $mbox] != 0} {
set friendly $mbox
} elseif {[string compare \
[set friendly [addr_x400 $mbox PN]] \
""]} {
} elseif {([string compare \
[set friendly [addr_x400 $mbox S]] \
""]) \
&& ([string compare \
[set g [addr_x400 $mbox G]] \
""])} {
set friendly "$g $friendly"
}
if {![string compare $friendly ""]} {
set friendly $mbox
}
}
}
set friendly [string trim $friendly "\""]
lappend result [list address $address \
comment $state(comment) \
domain $state(domain) \
error $state(error) \
friendly $friendly \
group $state(group) \
local $state(local) \
memberP $state(memberP) \
phrase $state(phrase) \
proper $proper \
route $state(route)]
}
unset state(input) \
state(glevel) \
state(buffer) \
state(lastC) \
state(tokenL) \
state(lexemeL)
return $result
}
# ::mime::addr_next --
#
# Locate the next address in a mime token.
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns 1 if there is another address, and 0 if there is not.
proc ::mime::addr_next {token} {
global errorCode errorInfo
# FRINK: nocheck
variable $token
upvar 0 $token state
set nocomplain [package vsatisfies [package provide Tcl] 8.4]
foreach prop {comment domain error group local memberP phrase route} {
if {$nocomplain} {
unset -nocomplain state($prop)
} else {
if {[catch { unset state($prop) }]} { set ::errorInfo {} }
}
}
switch -- [set code [catch { mime::addr_specification $token } result]] {
0 {
if {!$result} {
return 0
}
switch -- $state(lastC) {
LX_COMMA
-
LX_END {
}
default {
# catch trailing comments...
set lookahead $state(input)
mime::parselexeme $token
set state(input) $lookahead
}
}
}
7 {
set state(error) $result
while {1} {
switch -- $state(lastC) {
LX_COMMA
-
LX_END {
break
}
default {
mime::parselexeme $token
}
}
}
}
default {
set ecode $errorCode
set einfo $errorInfo
return -code $code -errorinfo $einfo -errorcode $ecode $result
}
}
foreach prop {comment domain error group local memberP phrase route} {
if {![info exists state($prop)]} {
set state($prop) ""
}
}
return 1
}
# ::mime::addr_specification --
#
# Uses lookahead parsing to determine whether there is another
# valid e-mail address or not. Throws errors if unrecognized
# or invalid e-mail address syntax is used.
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns 1 if there is another address, and 0 if there is not.
proc ::mime::addr_specification {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
set lookahead $state(input)
switch -- [parselexeme $token] {
LX_ATOM
-
LX_QSTRING {
set state(phrase) $state(buffer)
}
LX_SEMICOLON {
if {[incr state(glevel) -1] < 0} {
return -code 7 "extraneous semi-colon"
}
catch { unset state(comment) }
return [addr_specification $token]
}
LX_COMMA {
catch { unset state(comment) }
return [addr_specification $token]
}
LX_END {
return 0
}
LX_LBRACKET {
return [addr_routeaddr $token]
}
LX_ATSIGN {
set state(input) $lookahead
return [addr_routeaddr $token 0]
}
default {
return -code 7 \
[format "unexpected character at beginning (found %s)" \
$state(buffer)]
}
}
switch -- [parselexeme $token] {
LX_ATOM
-
LX_QSTRING {
append state(phrase) " " $state(buffer)
return [addr_phrase $token]
}
LX_LBRACKET {
return [addr_routeaddr $token]
}
LX_COLON {
return [addr_group $token]
}
LX_DOT {
set state(local) "$state(phrase)$state(buffer)"
unset state(phrase)
mime::addr_routeaddr $token 0
mime::addr_end $token
}
LX_ATSIGN {
set state(memberP) $state(glevel)
set state(local) $state(phrase)
unset state(phrase)
mime::addr_domain $token
mime::addr_end $token
}
LX_SEMICOLON
-
LX_COMMA
-
LX_END {
set state(memberP) $state(glevel)
if {(![string compare $state(lastC) LX_SEMICOLON]) \
&& ([incr state(glevel) -1] < 0)} {
return -code 7 "extraneous semi-colon"
}
set state(local) $state(phrase)
unset state(phrase)
}
default {
return -code 7 [format "expecting mailbox (found %s)" \
$state(buffer)]
}
}
return 1
}
# ::mime::addr_routeaddr --
#
# Parses the domain portion of an e-mail address. Finds the '@'
# sign and then calls mime::addr_route to verify the domain.
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns 1 if there is another address, and 0 if there is not.
proc ::mime::addr_routeaddr {token {checkP 1}} {
# FRINK: nocheck
variable $token
upvar 0 $token state
set lookahead $state(input)
if {![string compare [parselexeme $token] LX_ATSIGN]} {
mime::addr_route $token
} else {
set state(input) $lookahead
}
mime::addr_local $token
switch -- $state(lastC) {
LX_ATSIGN {
mime::addr_domain $token
}
LX_SEMICOLON
-
LX_RBRACKET
-
LX_COMMA
-
LX_END {
}
default {
return -code 7 \
[format "expecting at-sign after local-part (found %s)" \
$state(buffer)]
}
}
if {($checkP) && ([string compare $state(lastC) LX_RBRACKET])} {
return -code 7 [format "expecting right-bracket (found %s)" \
$state(buffer)]
}
return 1
}
# ::mime::addr_route --
#
# Attempts to parse the portion of the e-mail address after the @.
# Tries to verify that the domain definition has a valid form.
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns nothing if successful, and throws an error if invalid
# syntax is found.
proc ::mime::addr_route {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
set state(route) @
while {1} {
switch -- [parselexeme $token] {
LX_ATOM
-
LX_DLITERAL {
append state(route) $state(buffer)
}
default {
return -code 7 \
[format "expecting sub-route in route-part (found %s)" \
$state(buffer)]
}
}
switch -- [parselexeme $token] {
LX_COMMA {
append state(route) $state(buffer)
while {1} {
switch -- [parselexeme $token] {
LX_COMMA {
}
LX_ATSIGN {
append state(route) $state(buffer)
break
}
default {
return -code 7 \
[format "expecting at-sign in route (found %s)" \
$state(buffer)]
}
}
}
}
LX_ATSIGN
-
LX_DOT {
append state(route) $state(buffer)
}
LX_COLON {
append state(route) $state(buffer)
return
}
default {
return -code 7 \
[format "expecting colon to terminate route (found %s)" \
$state(buffer)]
}
}
}
}
# ::mime::addr_domain --
#
# Attempts to parse the portion of the e-mail address after the @.
# Tries to verify that the domain definition has a valid form.
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns nothing if successful, and throws an error if invalid
# syntax is found.
proc ::mime::addr_domain {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
while {1} {
switch -- [parselexeme $token] {
LX_ATOM
-
LX_DLITERAL {
append state(domain) $state(buffer)
}
default {
return -code 7 \
[format "expecting sub-domain in domain-part (found %s)" \
$state(buffer)]
}
}
switch -- [parselexeme $token] {
LX_DOT {
append state(domain) $state(buffer)
}
LX_ATSIGN {
append state(local) % $state(domain)
unset state(domain)
}
default {
return
}
}
}
}
# ::mime::addr_local --
#
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns nothing if successful, and throws an error if invalid
# syntax is found.
proc ::mime::addr_local {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
set state(memberP) $state(glevel)
while {1} {
switch -- [parselexeme $token] {
LX_ATOM
-
LX_QSTRING {
append state(local) $state(buffer)
}
default {
return -code 7 \
[format "expecting mailbox in local-part (found %s)" \
$state(buffer)]
}
}
switch -- [parselexeme $token] {
LX_DOT {
append state(local) $state(buffer)
}
default {
return
}
}
}
}
# ::mime::addr_phrase --
#
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns nothing if successful, and throws an error if invalid
# syntax is found.
proc ::mime::addr_phrase {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
while {1} {
switch -- [parselexeme $token] {
LX_ATOM
-
LX_QSTRING {
append state(phrase) " " $state(buffer)
}
default {
break
}
}
}
switch -- $state(lastC) {
LX_LBRACKET {
return [addr_routeaddr $token]
}
LX_COLON {
return [addr_group $token]
}
LX_DOT {
append state(phrase) $state(buffer)
return [addr_phrase $token]
}
default {
return -code 7 \
[format "found phrase instead of mailbox (%s%s)" \
$state(phrase) $state(buffer)]
}
}
}
# ::mime::addr_group --
#
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns nothing if successful, and throws an error if invalid
# syntax is found.
proc ::mime::addr_group {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
if {[incr state(glevel)] > 1} {
return -code 7 [format "nested groups not allowed (found %s)" \
$state(phrase)]
}
set state(group) $state(phrase)
unset state(phrase)
set lookahead $state(input)
while {1} {
switch -- [parselexeme $token] {
LX_SEMICOLON
-
LX_END {
set state(glevel) 0
return 1
}
LX_COMMA {
}
default {
set state(input) $lookahead
return [addr_specification $token]
}
}
}
}
# ::mime::addr_end --
#
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns nothing if successful, and throws an error if invalid
# syntax is found.
proc ::mime::addr_end {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
switch -- $state(lastC) {
LX_SEMICOLON {
if {[incr state(glevel) -1] < 0} {
return -code 7 "extraneous semi-colon"
}
}
LX_COMMA
-
LX_END {
}
default {
return -code 7 [format "junk after local@domain (found %s)" \
$state(buffer)]
}
}
}
# ::mime::addr_x400 --
#
#
# Arguments:
# token The MIME token to work from.
#
# Results:
# Returns nothing if successful, and throws an error if invalid
# syntax is found.
proc ::mime::addr_x400 {mbox key} {
if {[set x [string first "/$key=" [string toupper $mbox]]] < 0} {
return ""
}
set mbox [string range $mbox [expr {$x+[string length $key]+2}] end]
if {[set x [string first "/" $mbox]] > 0} {
set mbox [string range $mbox 0 [expr {$x-1}]]
}
return [string trim $mbox "\""]
}
# ::mime::parsedatetime --
#
# Fortunately the clock command in the Tcl 8.x core does all the heavy
# lifting for us (except for timezone calculations).
#
# mime::parsedatetime takes a string containing an 822-style date-time
# specification and returns the specified property.
#
# The list of properties and their ranges are:
#
# property range
# ======== =====
# clock raw result of "clock scan"
# hour 0 .. 23
# lmonth January, February, ..., December
# lweekday Sunday, Monday, ... Saturday
# mday 1 .. 31
# min 0 .. 59
# mon 1 .. 12
# month Jan, Feb, ..., Dec
# proper 822-style date-time specification
# rclock elapsed seconds between then and now
# sec 0 .. 59
# wday 0 .. 6 (Sun .. Mon)
# weekday Sun, Mon, ..., Sat
# yday 1 .. 366
# year 1900 ...
# zone -720 .. 720 (minutes east of GMT)
#
# Arguments:
# value Either a 822-style date-time specification or '-now'
# if the current date/time should be used.
# property The property (from the list above) to return
#
# Results:
# Returns the string value of the 'property' for the date/time that was
# specified in 'value'.
namespace eval ::mime {
variable WDAYS_SHORT [list Sun Mon Tue Wed Thu Fri Sat]
variable WDAYS_LONG [list Sunday Monday Tuesday Wednesday Thursday \
Friday Saturday]
# Counting months starts at 1, so just insert a dummy element
# at index 0.
variable MONTHS_SHORT [list "" \
Jan Feb Mar Apr May Jun \
Jul Aug Sep Oct Nov Dec]
variable MONTHS_LONG [list "" \
January February March April May June July \
August Sepember October November December]
}
proc ::mime::parsedatetime {value property} {
if {![string compare $value -now]} {
set clock [clock seconds]
} elseif {[regexp {^(.*) ([+-])([0-9][0-9])([0-9][0-9])$} $value \
-> value zone_sign zone_hour zone_min]} {
set clock [clock scan $value -gmt 1]
if {[info exists zone_min]} {
set zone_min [scan $zone_min %d]
set zone_hour [scan $zone_hour %d]
set zone [expr {60*($zone_min+60*$zone_hour)}]
if {[string equal $zone_sign "+"]} {
set zone -$zone
}
incr clock $zone
}
} else {
set clock [clock scan $value]
}
switch -- $property {
clock {
return $clock
}
hour {
set value [clock format $clock -format %H]
}
lmonth {
variable MONTHS_LONG
return [lindex $MONTHS_LONG \
[scan [clock format $clock -format %m] %d]]
}
lweekday {
variable WDAYS_LONG
return [lindex $WDAYS_LONG [clock format $clock -format %w]]
}
mday {
set value [clock format $clock -format %d]
}
min {
set value [clock format $clock -format %M]
}
mon {
set value [clock format $clock -format %m]
}
month {
variable MONTHS_SHORT
return [lindex $MONTHS_SHORT \
[scan [clock format $clock -format %m] %d]]
}
proper {
set gmt [clock format $clock -format "%Y-%m-%d %H:%M:%S" \
-gmt true]
if {[set diff [expr {($clock-[clock scan $gmt])/60}]] < 0} {
set s -
set diff [expr {-($diff)}]
} else {
set s +
}
set zone [format %s%02d%02d $s [expr {$diff/60}] [expr {$diff%60}]]
variable WDAYS_SHORT
set wday [lindex $WDAYS_SHORT [clock format $clock -format %w]]
variable MONTHS_SHORT
set mon [lindex $MONTHS_SHORT \
[scan [clock format $clock -format %m] %d]]
return [clock format $clock \
-format "$wday, %d $mon %Y %H:%M:%S $zone"]
}
rclock {
if {![string compare $value -now]} {
return 0
} else {
return [expr {[clock seconds]-$clock}]
}
}
sec {
set value [clock format $clock -format %S]
}
wday {
return [clock format $clock -format %w]
}
weekday {
variable WDAYS_SHORT
return [lindex $WDAYS_SHORT [clock format $clock -format %w]]
}
yday {
set value [clock format $clock -format %j]
}
year {
set value [clock format $clock -format %Y]
}
zone {
set value [string trim [string map [list "\t" " "] $value]]
if {[set x [string last " " $value]] < 0} {
return 0
}
set value [string range $value [expr {$x+1}] end]
switch -- [set s [string index $value 0]] {
+ - - {
if {![string compare $s +]} {
set s ""
}
set value [string trim [string range $value 1 end]]
if {([string length $value] != 4) \
|| ([scan $value %2d%2d h m] != 2) \
|| ($h > 12) \
|| ($m > 59) \
|| (($h == 12) && ($m > 0))} {
error "malformed timezone-specification: $value"
}
set value $s[expr {$h*60+$m}]
}
default {
set value [string toupper $value]
set z1 [list UT GMT EST EDT CST CDT MST MDT PST PDT]
set z2 [list 0 0 -5 -4 -6 -5 -7 -6 -8 -7]
if {[set x [lsearch -exact $z1 $value]] < 0} {
error "unrecognized timezone-mnemonic: $value"
}
set value [expr {[lindex $z2 $x]*60}]
}
}
}
date2gmt
-
date2local
-
dst
-
sday
-
szone
-
tzone
-
default {
error "unknown property $property"
}
}
if {![string compare [set value [string trimleft $value 0]] ""]} {
set value 0
}
return $value
}
# ::mime::uniqueID --
#
# Used to generate a 'globally unique identifier' for the content-id.
# The id is built from the pid, the current time, the hostname, and
# a counter that is incremented each time a message is sent.
#
# Arguments:
#
# Results:
# Returns the a string that contains the globally unique identifier
# that should be used for the Content-ID of an e-mail message.
proc ::mime::uniqueID {} {
variable mime
return "<[pid].[clock seconds].[incr mime(cid)]@[info hostname]>"
}
# ::mime::parselexeme --
#
# Used to implement a lookahead parser.
#
# Arguments:
# token The MIME token to operate on.
#
# Results:
# Returns the next token found by the parser.
proc ::mime::parselexeme {token} {
# FRINK: nocheck
variable $token
upvar 0 $token state
set state(input) [string trimleft $state(input)]
set state(buffer) ""
if {![string compare $state(input) ""]} {
set state(buffer) end-of-input
return [set state(lastC) LX_END]
}
set c [string index $state(input) 0]
set state(input) [string range $state(input) 1 end]
if {![string compare $c "("]} {
set noteP 0
set quoteP 0
while {1} {
append state(buffer) $c
switch -- $c/$quoteP {
"(/0" {
incr noteP
}
"\\/0" {
set quoteP 1
}
")/0" {
if {[incr noteP -1] < 1} {
if {[info exists state(comment)]} {
append state(comment) " "
}
append state(comment) $state(buffer)
return [parselexeme $token]
}
}
default {
set quoteP 0
}
}
if {![string compare [set c [string index $state(input) 0]] ""]} {
set state(buffer) "end-of-input during comment"
return [set state(lastC) LX_ERR]
}
set state(input) [string range $state(input) 1 end]
}
}
if {![string compare $c "\""]} {
set firstP 1
set quoteP 0
while {1} {
append state(buffer) $c
switch -- $c/$quoteP {
"\\/0" {
set quoteP 1
}
"\"/0" {
if {!$firstP} {
return [set state(lastC) LX_QSTRING]
}
set firstP 0
}
default {
set quoteP 0
}
}
if {![string compare [set c [string index $state(input) 0]] ""]} {
set state(buffer) "end-of-input during quoted-string"
return [set state(lastC) LX_ERR]
}
set state(input) [string range $state(input) 1 end]
}
}
if {![string compare $c "\["]} {
set quoteP 0
while {1} {
append state(buffer) $c
switch -- $c/$quoteP {
"\\/0" {
set quoteP 1
}
"\]/0" {
return [set state(lastC) LX_DLITERAL]
}
default {
set quoteP 0
}
}
if {![string compare [set c [string index $state(input) 0]] ""]} {
set state(buffer) "end-of-input during domain-literal"
return [set state(lastC) LX_ERR]
}
set state(input) [string range $state(input) 1 end]
}
}
if {[set x [lsearch -exact $state(tokenL) $c]] >= 0} {
append state(buffer) $c
return [set state(lastC) [lindex $state(lexemeL) $x]]
}
while {1} {
append state(buffer) $c
switch -- [set c [string index $state(input) 0]] {
"" - " " - "\t" - "\n" {
break
}
default {
if {[lsearch -exact $state(tokenL) $c] >= 0} {
break
}
}
}
set state(input) [string range $state(input) 1 end]
}
return [set state(lastC) LX_ATOM]
}
# ::mime::mapencoding --
#
# mime::mapencodings maps tcl encodings onto the proper names for their
# MIME charset type. This is only done for encodings whose charset types
# were known. The remaining encodings return "" for now.
#
# Arguments:
# enc The tcl encoding to map.
#
# Results:
# Returns the MIME charset type for the specified tcl encoding, or ""
# if none is known.
proc ::mime::mapencoding {enc} {
variable encodings
if {[info exists encodings($enc)]} {
return $encodings($enc)
}
return ""
}
# ::mime::reversemapencoding --
#
# mime::reversemapencodings maps MIME charset types onto tcl encoding names.
# Those that are unknown return "".
#
# Arguments:
# mimeType The MIME charset to convert into a tcl encoding type.
#
# Results:
# Returns the tcl encoding name for the specified mime charset, or ""
# if none is known.
proc ::mime::reversemapencoding {mimeType} {
variable reversemap
set lmimeType [string tolower $mimeType]
if {[info exists reversemap($lmimeType)]} {
return $reversemap($lmimeType)
}
return ""
}
# ::mime::word_encode --
#
# Word encodes strings as per RFC 2047.
#
# Arguments:
# charset The character set to encode the message to.
# method The encoding method (base64 or quoted-printable).
# string The string to encode.
# ?-charset_encoded 0 or 1 Whether the data is already encoded
# in the specified charset (default 1)
# ?-maxlength maxlength The maximum length of each encoded
# word to return (default 66)
#
# Results:
# Returns a word encoded string.
proc ::mime::word_encode {charset method string {args}} {
variable encodings
if {![info exists encodings($charset)]} {
error "unknown charset '$charset'"
}
if {$encodings($charset) == ""} {
error "invalid charset '$charset'"
}
if {$method != "base64" && $method != "quoted-printable"} {
error "unknown method '$method', must be base64 or quoted-printable"
}
# default to encoded and a length that won't make the Subject header to long
array set options [list -charset_encoded 1 -maxlength 66]
array set options $args
if { $options(-charset_encoded) } {
set unencoded_string [::encoding convertfrom $charset $string]
} else {
set unencoded_string $string
}
set string_length [string length $unencoded_string]
if {!$string_length} {
return ""
}
set string_bytelength [string bytelength $unencoded_string]
# the 7 is for =?, ?Q?, ?= delimiters of the encoded word
set maxlength [expr {$options(-maxlength) - [string length $encodings($charset)] - 7}]
switch -exact -- $method {
base64 {
if { $maxlength < 4 } {
error "maxlength $options(-maxlength) too short for chosen\
charset and encoding"
}
set count 0
set maxlength [expr {($maxlength / 4) * 3}]
while { $count < $string_length } {
set length 0
set enc_string ""
while { ($length < $maxlength) && ($count < $string_length) } {
set char [string range $unencoded_string $count $count]
set enc_char [::encoding convertto $charset $char]
if { ($length + [string length $enc_char]) > $maxlength } {
set length $maxlength
} else {
append enc_string $enc_char
incr count
incr length [string length $enc_char]
}
}
set encoded_word [string map [list \n {}] \
[base64 -mode encode -- $enc_string]]
append result "=?$encodings($charset)?B?$encoded_word?=\n "
}
# Trim off last "\n ", since the above code has the side-effect
# of adding an extra "\n " to the encoded string.
set result [string range $result 0 end-2]
}
quoted-printable {
if { $maxlength < 1 } {
error "maxlength $options(-maxlength) too short for chosen\
charset and encoding"
}
set count 0
while { $count < $string_length } {
set length 0
set encoded_word ""
while { ($length < $maxlength) && ($count < $string_length) } {
set char [string range $unencoded_string $count $count]
set enc_char [::encoding convertto $charset $char]
set qp_enc_char [qp_encode $enc_char 1]
set qp_enc_char_length [string length $qp_enc_char]
if { $qp_enc_char_length > $maxlength } {
error "maxlength $options(-maxlength) too short for chosen\
charset and encoding"
}
if { ($length + [string length $qp_enc_char]) > $maxlength } {
set length $maxlength
} else {
append encoded_word $qp_enc_char
incr count
incr length [string length $qp_enc_char]
}
}
append result "=?$encodings($charset)?Q?$encoded_word?=\n "
}
# Trim off last "\n ", since the above code has the side-effect
# of adding an extra "\n " to the encoded string.
set result [string range $result 0 end-2]
}
"" {
# Go ahead
}
default {
error "Can't handle content encoding \"$method\""
}
}
return $result
}
# ::mime::word_decode --
#
# Word decodes strings that have been word encoded as per RFC 2047.
#
# Arguments:
# encoded The word encoded string to decode.
#
# Results:
# Returns the string that has been decoded from the encoded message.
proc ::mime::word_decode {encoded} {
variable reversemap
if {[regexp -- {=\?([^?]+)\?(.)\?([^?]*)\?=} $encoded \
- charset method string] != 1} {
error "malformed word-encoded expression '$encoded'"
}
set enc [reversemapencoding $charset]
if {[string equal "" $enc]} {
error "unknown charset '$charset'"
}
switch -exact -- $method {
b -
B {
set method base64
}
q -
Q {
set method quoted-printable
}
default {
error "unknown method '$method', must be B or Q"
}
}
switch -exact -- $method {
base64 {
set result [base64 -mode decode -- $string]
}
quoted-printable {
set result [qp_decode $string 1]
}
"" {
# Go ahead
}
default {
error "Can't handle content encoding \"$method\""
}
}
return [list $enc $method $result]
}
# ::mime::field_decode --
#
# Word decodes strings that have been word encoded as per RFC 2047
# and converts the string from the original encoding/charset to UTF.
#
# Arguments:
# field The string to decode
#
# Results:
# Returns the decoded string in UTF.
proc ::mime::field_decode {field} {
# ::mime::field_decode is broken. Here's a new version.
# This code is in the public domain. Don Libes <don@libes.com>
# Step through a field for mime-encoded words, building a new
# version with unencoded equivalents.
# Sorry about the grotesque regexp. Most of it is sensible. One
# notable fudge: the final $ is needed because of an apparent bug
# in the regexp engine where the preceding .* otherwise becomes
# non-greedy - perhaps because of the earlier ".*?", sigh.
while {[regexp {(.*?)(=\?(?:[^?]+)\?(?:.)\?(?:[^?]*)\?=)(.*)$} $field ignore prefix encoded field]} {
# don't allow whitespace between encoded words per RFC 2047
if {"" != $prefix} {
if {![string is space $prefix]} {
append result $prefix
}
}
set decoded [word_decode $encoded]
foreach {charset - string} $decoded break
append result [::encoding convertfrom $charset $string]
}
append result $field
return $result
}
|