… | |
… | |
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 | }; |
… | |
… | |
140 | { |
141 | { |
141 | if (!SvOK (profile)) |
142 | if (!SvOK (profile)) |
142 | return default_profile; |
143 | return default_profile; |
143 | |
144 | |
144 | if (!SvROK (profile)) |
145 | if (!SvROK (profile)) |
145 | croak ("invalid profile"); |
146 | croak ("Convert::BER::XS::Profile expected"); |
146 | |
147 | |
147 | profile = SvRV (profile); |
148 | profile = SvRV (profile); |
148 | |
149 | |
149 | if (SvSTASH (profile) != profile_stash) |
150 | if (SvSTASH (profile) != profile_stash) |
150 | croak ("invalid profile object"); |
151 | croak ("Convert::BER::XS::Profile expected"); |
151 | |
152 | |
152 | return (void *)profile; |
153 | return (void *)profile; |
153 | } |
154 | } |
154 | |
155 | |
155 | static int |
156 | static int |
… | |
… | |
227 | } |
228 | } |
228 | |
229 | |
229 | // get_* functions fetch something from the buffer |
230 | // get_* functions fetch something from the buffer |
230 | // decode_* functions use get_* fun ctions to decode ber values |
231 | // decode_* functions use get_* fun ctions to decode ber values |
231 | |
232 | |
|
|
233 | // get single octet |
|
|
234 | static U8 |
|
|
235 | get_u8 (void) |
|
|
236 | { |
|
|
237 | if (cur == end) |
|
|
238 | error ("unexpected end of message buffer"); |
|
|
239 | |
|
|
240 | return *cur++; |
|
|
241 | } |
|
|
242 | |
232 | // get n octets |
243 | // get n octets |
233 | static U8 * |
244 | static U8 * |
234 | get_n (UV count) |
245 | get_n (UV count) |
235 | { |
246 | { |
236 | want (count); |
247 | want (count); |
237 | U8 *res = cur; |
248 | U8 *res = cur; |
238 | cur += count; |
249 | cur += count; |
239 | return res; |
250 | return res; |
240 | } |
251 | } |
241 | |
252 | |
242 | // get single octet |
|
|
243 | static U8 |
|
|
244 | get_u8 (void) |
|
|
245 | { |
|
|
246 | if (cur == end) |
|
|
247 | error ("unexpected end of message buffer"); |
|
|
248 | |
|
|
249 | return *cur++; |
|
|
250 | } |
|
|
251 | |
|
|
252 | // get ber-encoded integer (i.e. pack "w") |
253 | // get ber-encoded integer (i.e. pack "w") |
253 | static UV |
254 | static UV |
254 | get_w (void) |
255 | get_w (void) |
255 | { |
256 | { |
256 | UV res = 0; |
257 | UV res = 0; |
… | |
… | |
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 length 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 | |
… | |
… | |
281 | res = 0; |
285 | res = 0; |
282 | |
286 | |
283 | switch (cnt) |
287 | switch (cnt) |
284 | { |
288 | { |
285 | case 0: |
289 | case 0: |
286 | error ("indefinite ASN.1 lengths not supported"); |
290 | error ("indefinite BER value lengths not supported"); |
287 | |
291 | |
288 | case 0x7f: |
292 | case 0x7f: |
289 | error ("ASN.1 reserved value in length (X.690 8.1.3.5)"); |
293 | error ("BER reserved value in length (X.690 8.1.3.5)"); |
290 | |
294 | |
291 | default: |
295 | default: |
292 | error ("ASN.1 length too long (only up to 2**64 octets supported)"); |
296 | error ("BER value length too long (must fit into UV)"); |
293 | |
297 | |
|
|
298 | #if UVSIZE > 4 |
294 | case 8: res = (res << 8) | get_u8 (); |
299 | case 8: res = (res << 8) | get_u8 (); |
295 | case 7: res = (res << 8) | get_u8 (); |
300 | case 7: res = (res << 8) | get_u8 (); |
296 | case 6: res = (res << 8) | get_u8 (); |
301 | case 6: res = (res << 8) | get_u8 (); |
297 | case 5: res = (res << 8) | get_u8 (); |
302 | case 5: res = (res << 8) | get_u8 (); |
|
|
303 | #endif |
298 | case 4: res = (res << 8) | get_u8 (); |
304 | case 4: res = (res << 8) | get_u8 (); |
299 | case 3: res = (res << 8) | get_u8 (); |
305 | case 3: res = (res << 8) | get_u8 (); |
300 | case 2: res = (res << 8) | get_u8 (); |
306 | case 2: res = (res << 8) | get_u8 (); |
301 | case 1: res = (res << 8) | get_u8 (); |
307 | case 1: res = (res << 8) | get_u8 (); |
302 | } |
308 | } |
… | |
… | |
309 | decode_int (void) |
315 | decode_int (void) |
310 | { |
316 | { |
311 | UV len = get_length (); |
317 | UV len = get_length (); |
312 | |
318 | |
313 | if (!len) |
319 | if (!len) |
314 | error ("invalid integer length equal to zero (X.690 8.3.1)"); |
320 | error ("invalid BER_TYPE_INT length zero (X.690 8.3.1)"); |
315 | |
321 | |
316 | U8 *data = get_n (len); |
322 | U8 *data = get_n (len); |
317 | |
323 | |
318 | if (expect_false (len > 1)) |
324 | if (expect_false (len > 1)) |
319 | { |
325 | { |
320 | U16 mask = (data [0] << 8) | data [1] & 0xff80; |
326 | U16 mask = (data [0] << 8) | data [1] & 0xff80; |
321 | |
327 | |
322 | if (expect_false (mask == 0xff80 || mask == 0x0000)) |
328 | if (expect_false (mask == 0xff80 || mask == 0x0000)) |
323 | error ("illegal padding in integer (X.690 8.3.2)"); |
329 | error ("illegal padding in BER_TYPE_INT (X.690 8.3.2)"); |
324 | } |
330 | } |
325 | |
331 | |
326 | int negative = data [0] & 0x80; |
332 | int negative = data [0] & 0x80; |
327 | |
333 | |
328 | UV val = negative ? -1 : 0; // copy signbit to all bits |
334 | UV val = negative ? -1 : 0; // copy signbit to all bits |
|
|
335 | |
|
|
336 | if (len > UVSIZE + (!negative && !*data)) |
|
|
337 | error ("BER_TYPE_INT overflow"); |
329 | |
338 | |
330 | do |
339 | do |
331 | val = (val << 8) | *data++; |
340 | val = (val << 8) | *data++; |
332 | while (--len); |
341 | while (--len); |
333 | |
342 | |
… | |
… | |
381 | { |
390 | { |
382 | UV len = get_length (); |
391 | UV len = get_length (); |
383 | |
392 | |
384 | if (len <= 0) |
393 | if (len <= 0) |
385 | { |
394 | { |
386 | error ("OBJECT IDENTIFIER length equal to zero"); |
395 | error ("BER_TYPE_OID length must not be zero"); |
387 | return &PL_sv_undef; |
396 | return &PL_sv_undef; |
388 | } |
397 | } |
389 | |
398 | |
390 | U8 *end = cur + len; |
399 | U8 *end = cur + len; |
391 | UV w = get_w (); |
400 | UV w = get_w (); |
392 | |
401 | |
393 | static char oid[MAX_OID_STRLEN]; // static, becaueds too large for stack |
402 | static char oid[MAX_OID_STRLEN]; // static, because too large for stack |
394 | char *app = oid; |
403 | char *app = oid; |
395 | |
404 | |
396 | if (relative) |
405 | if (relative) |
397 | app = write_uv (app, w); |
406 | app = write_uv (app, w); |
|
|
407 | else |
|
|
408 | { |
|
|
409 | UV w1, w2; |
|
|
410 | |
398 | else if (w < 2 * 40) |
411 | if (w < 2 * 40) |
399 | { |
412 | (w1 = w / 40), (w2 = w % 40); |
|
|
413 | else |
|
|
414 | (w1 = 2), (w2 = w - 2 * 40); |
|
|
415 | |
400 | app = write_uv (app, (U8)w / 40); |
416 | app = write_uv (app, w1); |
401 | *app++ = '.'; |
417 | *app++ = '.'; |
402 | app = write_uv (app, (U8)w % 40); |
|
|
403 | } |
|
|
404 | else |
|
|
405 | { |
|
|
406 | app = write_uv (app, 2); |
418 | app = write_uv (app, w2); |
407 | *app++ = '.'; |
|
|
408 | app = write_uv (app, w - 2 * 40); |
|
|
409 | } |
419 | } |
410 | |
420 | |
411 | while (cur < end) |
421 | while (cur < end) |
412 | { |
422 | { |
413 | // we assume an oid component is never > 64 digits |
423 | // we assume an oid component is never > 64 digits |
… | |
… | |
480 | |
490 | |
481 | while (cur < buf + seqend) |
491 | while (cur < buf + seqend) |
482 | av_push (av, decode_ber ()); |
492 | av_push (av, decode_ber ()); |
483 | |
493 | |
484 | if (cur > buf + seqend) |
494 | if (cur > buf + seqend) |
485 | croak ("constructed type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend); |
495 | croak ("CONSTRUCTED type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend); |
486 | |
496 | |
487 | res = newRV_inc ((SV *)av); |
497 | res = newRV_inc ((SV *)av); |
488 | } |
498 | } |
489 | else |
499 | else |
490 | switch (profile_lookup (cur_profile, klass, tag)) |
500 | switch (profile_lookup (cur_profile, klass, tag)) |
… | |
… | |
555 | case BER_TYPE_UCS4: |
565 | case BER_TYPE_UCS4: |
556 | res = decode_ucs (4); |
566 | res = decode_ucs (4); |
557 | break; |
567 | break; |
558 | |
568 | |
559 | case BER_TYPE_REAL: |
569 | case BER_TYPE_REAL: |
|
|
570 | error ("BER_TYPE_REAL not implemented"); |
|
|
571 | |
560 | case BER_TYPE_CROAK: |
572 | case BER_TYPE_CROAK: |
|
|
573 | croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag); |
|
|
574 | |
561 | default: |
575 | default: |
562 | croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
576 | croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
563 | } |
577 | } |
564 | |
578 | |
565 | AV *av = newAV (); |
579 | AV *av = newAV (); |
… | |
… | |
662 | else |
676 | else |
663 | { |
677 | { |
664 | U8 *lenb = cur++; |
678 | U8 *lenb = cur++; |
665 | |
679 | |
666 | #if UVSIZE > 4 |
680 | #if UVSIZE > 4 |
667 | *cur = val >> 56; cur += *cur > 0; |
681 | *cur = val >> 56; cur += val >= ((UV)1 << (8 * 7)); |
668 | *cur = val >> 48; cur += *cur > 0; |
682 | *cur = val >> 48; cur += val >= ((UV)1 << (8 * 6)); |
669 | *cur = val >> 40; cur += *cur > 0; |
683 | *cur = val >> 40; cur += val >= ((UV)1 << (8 * 5)); |
670 | *cur = val >> 32; cur += *cur > 0; |
684 | *cur = val >> 32; cur += val >= ((UV)1 << (8 * 4)); |
671 | #endif |
685 | #endif |
672 | *cur = val >> 24; cur += *cur > 0; |
686 | *cur = val >> 24; cur += val >= ((UV)1 << (8 * 3)); |
673 | *cur = val >> 16; cur += *cur > 0; |
687 | *cur = val >> 16; cur += val >= ((UV)1 << (8 * 2)); |
674 | *cur = val >> 8; cur += *cur > 0; |
688 | *cur = val >> 8; cur += val >= ((UV)1 << (8 * 1)); |
675 | *cur = val ; cur += 1; |
689 | *cur = val ; cur += 1; |
676 | |
690 | |
677 | *lenb = 0x80 + cur - lenb - 1; |
691 | *lenb = 0x80 + cur - lenb - 1; |
678 | } |
692 | } |
679 | |
693 | |
… | |
… | |
916 | // and adjust later |
930 | // and adjust later |
917 | need (1); |
931 | need (1); |
918 | STRLEN mark = len_fixup_mark (); |
932 | STRLEN mark = len_fixup_mark (); |
919 | |
933 | |
920 | if (expect_false (!SvROK (data) || SvTYPE (SvRV (data)) != SVt_PVAV)) |
934 | if (expect_false (!SvROK (data) || SvTYPE (SvRV (data)) != SVt_PVAV)) |
921 | croak ("BER constructed data must be array-reference"); |
935 | croak ("BER CONSTRUCTED data must be array-reference"); |
922 | |
936 | |
923 | AV *av = (AV *)SvRV (data); |
937 | AV *av = (AV *)SvRV (data); |
924 | int fill = AvFILL (av); |
938 | int fill = AvFILL (av); |
925 | |
939 | |
926 | if (expect_false (SvRMAGICAL (av))) |
940 | if (expect_false (SvRMAGICAL (av))) |
927 | croak ("BER constructed data must not be tied"); |
941 | croak ("BER CONSTRUCTED data must not be tied"); |
928 | |
942 | |
929 | int i; |
943 | int i; |
930 | for (i = 0; i <= fill; ++i) |
944 | for (i = 0; i <= fill; ++i) |
931 | encode_ber (AvARRAY (av)[i]); |
945 | encode_ber (AvARRAY (av)[i]); |
932 | |
946 | |
… | |
… | |
987 | case BER_TYPE_UCS4: |
1001 | case BER_TYPE_UCS4: |
988 | encode_ucs (data, 4); |
1002 | encode_ucs (data, 4); |
989 | break; |
1003 | break; |
990 | |
1004 | |
991 | case BER_TYPE_REAL: |
1005 | case BER_TYPE_REAL: |
|
|
1006 | croak ("BER_TYPE_REAL not implemented"); |
|
|
1007 | |
992 | case BER_TYPE_CROAK: |
1008 | case BER_TYPE_CROAK: |
|
|
1009 | croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag); |
|
|
1010 | |
993 | default: |
1011 | default: |
994 | croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
1012 | croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
995 | } |
1013 | } |
996 | |
1014 | |
997 | } |
1015 | } |
… | |
… | |
1069 | const_iv (BER_TYPE_IPADDRESS) |
1087 | const_iv (BER_TYPE_IPADDRESS) |
1070 | const_iv (BER_TYPE_CROAK) |
1088 | const_iv (BER_TYPE_CROAK) |
1071 | |
1089 | |
1072 | const_iv (SNMP_IPADDRESS) |
1090 | const_iv (SNMP_IPADDRESS) |
1073 | const_iv (SNMP_COUNTER32) |
1091 | const_iv (SNMP_COUNTER32) |
|
|
1092 | const_iv (SNMP_GAUGE32) |
1074 | const_iv (SNMP_UNSIGNED32) |
1093 | const_iv (SNMP_UNSIGNED32) |
1075 | const_iv (SNMP_TIMETICKS) |
1094 | const_iv (SNMP_TIMETICKS) |
1076 | const_iv (SNMP_OPAQUE) |
1095 | const_iv (SNMP_OPAQUE) |
1077 | const_iv (SNMP_COUNTER64) |
1096 | const_iv (SNMP_COUNTER64) |
1078 | }; |
1097 | }; |
1079 | |
1098 | |
1080 | for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) |
1099 | 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)); |
1100 | newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); |
1082 | } |
1101 | } |
1083 | |
1102 | |
1084 | SV * |
1103 | void |
1085 | ber_decode (SV *ber, SV *profile = &PL_sv_undef) |
1104 | ber_decode (SV *ber, SV *profile = &PL_sv_undef) |
|
|
1105 | ALIAS: |
|
|
1106 | ber_decode_prefix = 1 |
1086 | CODE: |
1107 | PPCODE: |
1087 | { |
1108 | { |
1088 | cur_profile = SvPROFILE (profile); |
1109 | cur_profile = SvPROFILE (profile); |
1089 | STRLEN len; |
1110 | STRLEN len; |
1090 | buf = (U8 *)SvPVbyte (ber, len); |
1111 | buf = (U8 *)SvPVbyte (ber, len); |
1091 | cur = buf; |
1112 | cur = buf; |
1092 | end = buf + len; |
1113 | end = buf + len; |
1093 | |
1114 | |
1094 | RETVAL = decode_ber (); |
1115 | SV *tuple = decode_ber (); |
|
|
1116 | |
|
|
1117 | EXTEND (SP, 2); |
|
|
1118 | PUSHs (sv_2mortal (tuple)); |
|
|
1119 | |
|
|
1120 | if (ix) |
|
|
1121 | PUSHs (sv_2mortal (newSViv (cur - buf))); |
|
|
1122 | else if (cur != end) |
|
|
1123 | error ("trailing garbage after BER value"); |
1095 | } |
1124 | } |
1096 | OUTPUT: RETVAL |
|
|
1097 | |
1125 | |
1098 | void |
1126 | void |
1099 | ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef) |
1127 | ber_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: |
1128 | PPCODE: |
1101 | { |
1129 | { |