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Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.18 by root, Sat Apr 20 16:12:53 2019 UTC vs.
Revision 1.22 by root, Sat Apr 20 18:38:33 2019 UTC

… …
58 ASN_CLASS_SHIFT = 6, 58 ASN_CLASS_SHIFT = 6,
59 59
60 // ASN_APPLICATION SNMP 60 // ASN_APPLICATION SNMP
61 SNMP_IPADDRESS = 0x00, 61 SNMP_IPADDRESS = 0x00,
62 SNMP_COUNTER32 = 0x01, 62 SNMP_COUNTER32 = 0x01,
63 SNMP_GAUGE32 = 0x02,
63 SNMP_UNSIGNED32 = 0x02, 64 SNMP_UNSIGNED32 = 0x02,
64 SNMP_TIMETICKS = 0x03, 65 SNMP_TIMETICKS = 0x03,
65 SNMP_OPAQUE = 0x04, 66 SNMP_OPAQUE = 0x04,
66 SNMP_COUNTER64 = 0x06, 67 SNMP_COUNTER64 = 0x06,
67}; 68};
… …
252// get ber-encoded integer (i.e. pack "w") 253// get ber-encoded integer (i.e. pack "w")
253static UV 254static UV
254get_w (void) 255get_w (void)
255{ 256{
256 UV res = 0; 257 UV res = 0;
258 U8 c = get_u8 ();
259
260 if (expect_false (c == 0x80))
261 error ("illegal BER padding (X.690 8.1.2.4.2, 8.19.2)");
257 262
258 for (;;) 263 for (;;)
259 { 264 {
260 U8 c = get_u8 ();
261 res = (res << 7) | (c & 0x7f); 265 res = (res << 7) | (c & 0x7f);
262 266
263 if (!(c & 0x80)) 267 if (!(c & 0x80))
264 return res; 268 return res;
269
270 c = get_u8 ();
265 } 271 }
266} 272}
267 273
268static UV 274static UV
269get_length (void) 275get_length (void)
… …
277 283
278 switch (cnt) 284 switch (cnt)
279 { 285 {
280 case 0: 286 case 0:
281 error ("indefinite ASN.1 lengths not supported"); 287 error ("indefinite ASN.1 lengths not supported");
282 return 0;
283 288
284 //case 0x80: // indefinite length 289 case 0x7f:
290 error ("ASN.1 reserved value in length (X.690 8.1.3.5)");
285 291
286 //case 0xff: reserved
287 default: 292 default:
288 error ("ASN.1 length too long"); 293 error ("ASN.1 length too long (only up to 2**64 octets supported)");
289 return 0;
290 294
291 case 8: res = (res << 8) | get_u8 (); 295 case 8: res = (res << 8) | get_u8 ();
292 case 7: res = (res << 8) | get_u8 (); 296 case 7: res = (res << 8) | get_u8 ();
293 case 6: res = (res << 8) | get_u8 (); 297 case 6: res = (res << 8) | get_u8 ();
294 case 5: res = (res << 8) | get_u8 (); 298 case 5: res = (res << 8) | get_u8 ();
… …
306decode_int (void) 310decode_int (void)
307{ 311{
308 UV len = get_length (); 312 UV len = get_length ();
309 313
310 if (!len) 314 if (!len)
311 {
312 error ("invalid integer length equal to zero"); 315 error ("invalid integer length equal to zero (X.690 8.3.1)");
313 return 0;
314 }
315 316
316 U8 *data = get_n (len); 317 U8 *data = get_n (len);
318
319 if (expect_false (len > 1))
320 {
321 U16 mask = (data [0] << 8) | data [1] & 0xff80;
322
323 if (expect_false (mask == 0xff80 || mask == 0x0000))
324 error ("illegal padding in integer (X.690 8.3.2)");
325 }
317 326
318 int negative = data [0] & 0x80; 327 int negative = data [0] & 0x80;
319 328
320 UV val = negative ? -1 : 0; // copy signbit to all bits 329 UV val = negative ? -1 : 0; // copy signbit to all bits
321 330
… …
462 int tag = identifier & ASN_TAG_MASK; 471 int tag = identifier & ASN_TAG_MASK;
463 472
464 if (tag == ASN_TAG_BER) 473 if (tag == ASN_TAG_BER)
465 tag = get_w (); 474 tag = get_w ();
466 475
467 if (tag == ASN_TAG_BER)
468 tag = get_w ();
469
470 if (constructed) 476 if (constructed)
471 { 477 {
472 UV len = get_length (); 478 UV len = get_length ();
473 UV seqend = (cur - buf) + len; 479 UV seqend = (cur - buf) + len;
474 AV *av = (AV *)sv_2mortal ((SV *)newAV ()); 480 AV *av = (AV *)sv_2mortal ((SV *)newAV ());
475 481
476 while (cur < buf + seqend) 482 while (cur < buf + seqend)
477 av_push (av, decode_ber ()); 483 av_push (av, decode_ber ());
478 484
479 if (cur > buf + seqend) 485 if (cur > buf + seqend)
480 croak ("constructed type %02x overflow (%x %x)\n", identifier, cur - buf, seqend); 486 croak ("constructed type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend);
481 487
482 res = newRV_inc ((SV *)av); 488 res = newRV_inc ((SV *)av);
483 } 489 }
484 else 490 else
485 switch (profile_lookup (cur_profile, klass, tag)) 491 switch (profile_lookup (cur_profile, klass, tag))
… …
487 case BER_TYPE_NULL: 493 case BER_TYPE_NULL:
488 { 494 {
489 UV len = get_length (); 495 UV len = get_length ();
490 496
491 if (len) 497 if (len)
492 croak ("BER_TYPE_NULL value with non-zero length %d encountered", len); 498 croak ("BER_TYPE_NULL value with non-zero length %d encountered (X.690 8.8.2)", len);
493 499
494 res = &PL_sv_undef; 500 res = &PL_sv_undef;
495 } 501 }
496 break; 502 break;
497 503
498 case BER_TYPE_BOOL: 504 case BER_TYPE_BOOL:
499 { 505 {
500 UV len = get_length (); 506 UV len = get_length ();
501 507
502 if (len != 1) 508 if (len != 1)
503 croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered", len); 509 croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered (X.690 8.2.1)", len);
504 510
505 res = newSVcacheint (!!get_u8 ()); 511 res = newSVcacheint (!!get_u8 ());
506 } 512 }
507 break; 513 break;
508 514
… …
530 case BER_TYPE_IPADDRESS: 536 case BER_TYPE_IPADDRESS:
531 { 537 {
532 UV len = get_length (); 538 UV len = get_length ();
533 539
534 if (len != 4) 540 if (len != 4)
535 croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered", len); 541 croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered (RFC 2578 7.1.5)", len);
536 542
537 U8 c1 = get_u8 (); 543 U8 c1 = get_u8 ();
538 U8 c2 = get_u8 (); 544 U8 c2 = get_u8 ();
539 U8 c3 = get_u8 (); 545 U8 c3 = get_u8 ();
540 U8 c4 = get_u8 (); 546 U8 c4 = get_u8 ();
… …
575strlen_sum (STRLEN l1, STRLEN l2) 581strlen_sum (STRLEN l1, STRLEN l2)
576{ 582{
577 size_t sum = l1 + l2; 583 size_t sum = l1 + l2;
578 584
579 if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum) 585 if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum)
580 croak ("JSON::XS: string size overflow"); 586 croak ("Convert::BER::XS: string size overflow");
581 587
582 return sum; 588 return sum;
583} 589}
584 590
585static void 591static void
… …
1064 const_iv (BER_TYPE_IPADDRESS) 1070 const_iv (BER_TYPE_IPADDRESS)
1065 const_iv (BER_TYPE_CROAK) 1071 const_iv (BER_TYPE_CROAK)
1066 1072
1067 const_iv (SNMP_IPADDRESS) 1073 const_iv (SNMP_IPADDRESS)
1068 const_iv (SNMP_COUNTER32) 1074 const_iv (SNMP_COUNTER32)
1075 const_iv (SNMP_GAUGE32)
1069 const_iv (SNMP_UNSIGNED32) 1076 const_iv (SNMP_UNSIGNED32)
1070 const_iv (SNMP_TIMETICKS) 1077 const_iv (SNMP_TIMETICKS)
1071 const_iv (SNMP_OPAQUE) 1078 const_iv (SNMP_OPAQUE)
1072 const_iv (SNMP_COUNTER64) 1079 const_iv (SNMP_COUNTER64)
1073 }; 1080 };
1074 1081
1075 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) 1082 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1076 newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); 1083 newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1077} 1084}
1078 1085
1079SV * 1086void
1080ber_decode (SV *ber, SV *profile = &PL_sv_undef) 1087ber_decode (SV *ber, SV *profile = &PL_sv_undef)
1088 ALIAS:
1089 ber_decode_prefix = 1
1081 CODE: 1090 PPCODE:
1082{ 1091{
1083 cur_profile = SvPROFILE (profile); 1092 cur_profile = SvPROFILE (profile);
1084 STRLEN len; 1093 STRLEN len;
1085 buf = (U8 *)SvPVbyte (ber, len); 1094 buf = (U8 *)SvPVbyte (ber, len);
1086 cur = buf; 1095 cur = buf;
1087 end = buf + len; 1096 end = buf + len;
1088 1097
1089 RETVAL = decode_ber (); 1098 SV *tuple = decode_ber ();
1099
1100 EXTEND (SP, 2);
1101 PUSHs (sv_2mortal (tuple));
1102
1103 if (ix)
1104 PUSHs (sv_2mortal (newSViv (cur - buf)));
1105 else if (cur != end)
1106 error ("trailing garbage after BER data");
1090} 1107}
1091 OUTPUT: RETVAL
1092 1108
1093void 1109void
1094ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef) 1110ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef)
1095 PPCODE: 1111 PPCODE:
1096{ 1112{

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