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Comparing Convert-BER-XS/XS.xs (file contents):
Revision 1.20 by root, Sat Apr 20 17:04:35 2019 UTC vs.
Revision 1.24 by root, Sun Apr 21 01:58:15 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};
… …
259 if (expect_false (c == 0x80)) 260 if (expect_false (c == 0x80))
260 error ("illegal BER padding (X.690 8.1.2.4.2, 8.19.2)"); 261 error ("illegal BER padding (X.690 8.1.2.4.2, 8.19.2)");
261 262
262 for (;;) 263 for (;;)
263 { 264 {
265 if (expect_false (res >> UVSIZE * 8 - 7))
266 error ("BER variable integer overflow");
267
264 res = (res << 7) | (c & 0x7f); 268 res = (res << 7) | (c & 0x7f);
265 269
266 if (!(c & 0x80)) 270 if (!(c & 0x80))
267 return res; 271 return res;
268 272
… …
325 329
326 int negative = data [0] & 0x80; 330 int negative = data [0] & 0x80;
327 331
328 UV val = negative ? -1 : 0; // copy signbit to all bits 332 UV val = negative ? -1 : 0; // copy signbit to all bits
329 333
334 if (len > UVSIZE + (!negative && !*data))
335 error ("INTEGER overflow");
336
330 do 337 do
331 val = (val << 8) | *data++; 338 val = (val << 8) | *data++;
332 while (--len); 339 while (--len);
333 340
334 // the cast to IV relies on implementation-defined behaviour (two's complement cast) 341 // the cast to IV relies on implementation-defined behaviour (two's complement cast)
… …
388 } 395 }
389 396
390 U8 *end = cur + len; 397 U8 *end = cur + len;
391 UV w = get_w (); 398 UV w = get_w ();
392 399
393 static char oid[MAX_OID_STRLEN]; // static, becaueds too large for stack 400 static char oid[MAX_OID_STRLEN]; // static, because too large for stack
394 char *app = oid; 401 char *app = oid;
395 402
396 if (relative) 403 if (relative)
397 app = write_uv (app, w); 404 app = write_uv (app, w);
398 else if (w < 2 * 40) 405 else if (w < 2 * 40)
… …
1069 const_iv (BER_TYPE_IPADDRESS) 1076 const_iv (BER_TYPE_IPADDRESS)
1070 const_iv (BER_TYPE_CROAK) 1077 const_iv (BER_TYPE_CROAK)
1071 1078
1072 const_iv (SNMP_IPADDRESS) 1079 const_iv (SNMP_IPADDRESS)
1073 const_iv (SNMP_COUNTER32) 1080 const_iv (SNMP_COUNTER32)
1081 const_iv (SNMP_GAUGE32)
1074 const_iv (SNMP_UNSIGNED32) 1082 const_iv (SNMP_UNSIGNED32)
1075 const_iv (SNMP_TIMETICKS) 1083 const_iv (SNMP_TIMETICKS)
1076 const_iv (SNMP_OPAQUE) 1084 const_iv (SNMP_OPAQUE)
1077 const_iv (SNMP_COUNTER64) 1085 const_iv (SNMP_COUNTER64)
1078 }; 1086 };
1079 1087
1080 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) 1088 for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1081 newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); 1089 newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1082} 1090}
1083 1091
1084SV * 1092void
1085ber_decode (SV *ber, SV *profile = &PL_sv_undef) 1093ber_decode (SV *ber, SV *profile = &PL_sv_undef)
1094 ALIAS:
1095 ber_decode_prefix = 1
1086 CODE: 1096 PPCODE:
1087{ 1097{
1088 cur_profile = SvPROFILE (profile); 1098 cur_profile = SvPROFILE (profile);
1089 STRLEN len; 1099 STRLEN len;
1090 buf = (U8 *)SvPVbyte (ber, len); 1100 buf = (U8 *)SvPVbyte (ber, len);
1091 cur = buf; 1101 cur = buf;
1092 end = buf + len; 1102 end = buf + len;
1093 1103
1094 RETVAL = decode_ber (); 1104 SV *tuple = decode_ber ();
1105
1106 EXTEND (SP, 2);
1107 PUSHs (sv_2mortal (tuple));
1108
1109 if (ix)
1110 PUSHs (sv_2mortal (newSViv (cur - buf)));
1111 else if (cur != end)
1112 error ("trailing garbage after BER data");
1095} 1113}
1096 OUTPUT: RETVAL
1097 1114
1098void 1115void
1099ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef) 1116ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef)
1100 PPCODE: 1117 PPCODE:
1101{ 1118{

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