1 |
#include "EXTERN.h" |
2 |
#include "perl.h" |
3 |
#include "XSUB.h" |
4 |
|
5 |
// C99 required |
6 |
|
7 |
//#define BENCHMARK |
8 |
|
9 |
enum { |
10 |
ASN_BOOLEAN = 0x01, |
11 |
ASN_INTEGER32 = 0x02, |
12 |
ASN_BIT_STRING = 0x03, |
13 |
ASN_OCTET_STRING = 0x04, |
14 |
ASN_NULL = 0x05, |
15 |
ASN_OBJECT_IDENTIFIER = 0x06, |
16 |
|
17 |
ASN_TAG_BER = 0x1f, |
18 |
ASN_TAG_MASK = 0x1f, |
19 |
|
20 |
ASN_CONSTRUCTED = 0x20, |
21 |
|
22 |
ASN_UNIVERSAL = 0x00, |
23 |
ASN_APPLICATION = 0x40, |
24 |
ASN_CONTEXT = 0x80, |
25 |
ASN_PRIVATE = 0xc0, |
26 |
|
27 |
ASN_CLASS_MASK = 0xc0, |
28 |
ASN_CLASS_SHIFT = 6, |
29 |
|
30 |
ASN_SEQUENCE = ASN_CONSTRUCTED | 0x10, |
31 |
ASN_IPADDRESS = ASN_APPLICATION | 0x00, |
32 |
ASN_COUNTER32 = ASN_APPLICATION | 0x01, |
33 |
ASN_UNSIGNED32 = ASN_APPLICATION | 0x02, |
34 |
ASN_TIMETICKS = ASN_APPLICATION | 0x03, |
35 |
ASN_OPAQUE = ASN_APPLICATION | 0x04, |
36 |
ASN_COUNTER64 = ASN_APPLICATION | 0x06, |
37 |
}; |
38 |
|
39 |
#define MAX_OID_STRLEN 4096 |
40 |
|
41 |
#define HAVE_VERSIONSORT defined (_GNU_SOURCE) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1 |
42 |
|
43 |
static SV *cur_bufobj; |
44 |
static SV *msg, *bufsv; |
45 |
static int errflag, leading_dot; |
46 |
static U8 *buf, *cur; |
47 |
static STRLEN len, rem; |
48 |
|
49 |
typedef SV *BUFOBJ; |
50 |
|
51 |
// for "small" integers, return a readonly sv, otherwise create a new one |
52 |
static SV *newSVcacheint (int val) |
53 |
{ |
54 |
static SV *cache[32]; |
55 |
|
56 |
if (val < 0 || val >= sizeof (cache)) |
57 |
return newSViv (val); |
58 |
|
59 |
if (!cache [val]) |
60 |
{ |
61 |
cache [val] = newSVuv (val); |
62 |
SvREADONLY_on (cache [val]); |
63 |
} |
64 |
|
65 |
return SvREFCNT_inc_NN (cache [val]); |
66 |
} |
67 |
|
68 |
///////////////////////////////////////////////////////////////////////////// |
69 |
|
70 |
#if 0 |
71 |
if (msg) |
72 |
croak ("recursive invocation of Net::SNMP::XS parser is not supported"); |
73 |
|
74 |
|
75 |
void |
76 |
clr_msg () |
77 |
CODE: |
78 |
SvREFCNT_dec (msg); msg = 0; |
79 |
buf = cur = (U8 *)""; |
80 |
len = rem = 0; |
81 |
#endif |
82 |
|
83 |
static void |
84 |
clear_bufobj (void) |
85 |
{ |
86 |
// serialise our state back |
87 |
if (msg && SvROK (msg)) |
88 |
{ |
89 |
SV *idx_sv = *hv_fetch ((HV *)cur_bufobj, "_index" , sizeof ("_index" ) - 1, 1); |
90 |
sv_setiv (idx_sv, cur - buf); |
91 |
} |
92 |
|
93 |
SvREFCNT_dec (msg); |
94 |
msg = 0; |
95 |
cur_bufobj = 0; |
96 |
} |
97 |
|
98 |
static void |
99 |
switch_bufobj (BUFOBJ neu) |
100 |
{ |
101 |
clear_bufobj (); |
102 |
|
103 |
msg = newSVsv (neu); |
104 |
cur_bufobj = SvRV (msg); |
105 |
sv_rvweaken (msg); |
106 |
|
107 |
errflag = 0; |
108 |
leading_dot = -1; |
109 |
|
110 |
IV index = SvIV (*hv_fetch ((HV *)cur_bufobj, "_index" , sizeof ("_index" ) - 1, 1)); |
111 |
bufsv = *hv_fetch ((HV *)cur_bufobj, "_buffer", sizeof ("_buffer") - 1, 1); |
112 |
|
113 |
buf = SvPVbyte (bufsv, len); |
114 |
cur = buf + index; |
115 |
rem = len - index; |
116 |
} |
117 |
|
118 |
///////////////////////////////////////////////////////////////////////////// |
119 |
|
120 |
static SV * |
121 |
x_get_cv (SV *cb_sv) |
122 |
{ |
123 |
HV *st; |
124 |
GV *gvp; |
125 |
CV *cv = sv_2cv (cb_sv, &st, &gvp, 0); |
126 |
|
127 |
if (!cv) |
128 |
croak ("CODE reference expected"); |
129 |
|
130 |
return (SV *)cv; |
131 |
} |
132 |
|
133 |
static void |
134 |
error (const char *errmsg) |
135 |
{ |
136 |
errflag = 1; |
137 |
|
138 |
if (!msg) |
139 |
croak ("Net::SNMP::XS fatal error, parser called without parsing context"); |
140 |
|
141 |
dSP; |
142 |
PUSHMARK (SP); |
143 |
EXTEND (SP, 2); |
144 |
PUSHs (msg); |
145 |
PUSHs (sv_2mortal (newSVpv (errmsg, 0))); |
146 |
PUTBACK; |
147 |
call_method ("_error", G_VOID | G_DISCARD); |
148 |
} |
149 |
|
150 |
static int |
151 |
need (int count) |
152 |
{ |
153 |
if (count < 0 || (int)rem < count) |
154 |
{ |
155 |
error ("Unexpected end of message buffer"); |
156 |
return 0; |
157 |
} |
158 |
|
159 |
return 1; |
160 |
} |
161 |
|
162 |
static U8 * |
163 |
getn (int count, const U8 *errres) |
164 |
{ |
165 |
if (!need (count)) |
166 |
return (U8 *)errres; |
167 |
|
168 |
U8 *res = cur; |
169 |
|
170 |
cur += count; |
171 |
rem -= count; |
172 |
|
173 |
return res; |
174 |
} |
175 |
|
176 |
static U8 |
177 |
get8 (void) |
178 |
{ |
179 |
if (rem <= 0) |
180 |
{ |
181 |
error ("Unexpected end of message buffer"); |
182 |
return 0; |
183 |
} |
184 |
|
185 |
rem--; |
186 |
return *cur++; |
187 |
} |
188 |
|
189 |
static U32 |
190 |
getb (void) |
191 |
{ |
192 |
U32 res = 0; |
193 |
|
194 |
for (;;) |
195 |
{ |
196 |
U8 c = get8 (); |
197 |
res = (res << 7) | (c & 0x7f); |
198 |
|
199 |
if (!(c & 0x80)) |
200 |
return res; |
201 |
} |
202 |
} |
203 |
|
204 |
#ifdef BENCHMARK |
205 |
static double t1; |
206 |
|
207 |
static double |
208 |
tstamp (void) |
209 |
{ |
210 |
struct timeval tv; |
211 |
gettimeofday (&tv, 0); |
212 |
return tv.tv_sec + tv.tv_usec * 0.000001; |
213 |
} |
214 |
#endif |
215 |
|
216 |
static U32 |
217 |
process_length (void) |
218 |
{ |
219 |
U32 res = get8 (); |
220 |
|
221 |
if (res & 0x80) |
222 |
{ |
223 |
int cnt = res & 0x7f; |
224 |
res = 0; |
225 |
|
226 |
switch (cnt) |
227 |
{ |
228 |
case 0: |
229 |
error ("Indefinite ASN.1 lengths not supported"); |
230 |
return 0; |
231 |
|
232 |
default: |
233 |
error ("ASN.1 length too long"); |
234 |
return 0; |
235 |
|
236 |
case 4: res = (res << 8) | get8 (); |
237 |
case 3: res = (res << 8) | get8 (); |
238 |
case 2: res = (res << 8) | get8 (); |
239 |
case 1: res = (res << 8) | get8 (); |
240 |
} |
241 |
} |
242 |
|
243 |
return res; |
244 |
} |
245 |
|
246 |
static U32 |
247 |
process_integer32 (void) |
248 |
{ |
249 |
U32 length = process_length (); |
250 |
|
251 |
if (length <= 0) |
252 |
{ |
253 |
error ("INTEGER32 length equal to zero"); |
254 |
return 0; |
255 |
} |
256 |
|
257 |
U8 *data = getn (length, 0); |
258 |
|
259 |
if (!data) |
260 |
return 0; |
261 |
|
262 |
if (length > 5 || (length > 4 && data [0])) |
263 |
{ |
264 |
error ("INTEGER32 length too long"); |
265 |
return 0; |
266 |
} |
267 |
|
268 |
U32 res = data [0] & 0x80 ? 0xffffffff : 0; |
269 |
|
270 |
while (length--) |
271 |
res = (res << 8) | *data++; |
272 |
|
273 |
return res; |
274 |
} |
275 |
|
276 |
static SV * |
277 |
process_integer32_sv (void) |
278 |
{ |
279 |
return newSViv ((I32)process_integer32 ()); |
280 |
} |
281 |
|
282 |
static SV * |
283 |
process_unsigned32_sv (void) |
284 |
{ |
285 |
return newSVuv ((U32)process_integer32 ()); |
286 |
} |
287 |
|
288 |
#if IVSIZE >= 8 |
289 |
|
290 |
static U64TYPE |
291 |
process_integer64 (void) |
292 |
{ |
293 |
U32 length = process_length (); |
294 |
|
295 |
if (length <= 0) |
296 |
{ |
297 |
error ("INTEGER64 length equal to zero"); |
298 |
return 0; |
299 |
} |
300 |
|
301 |
U8 *data = getn (length, 0); |
302 |
|
303 |
if (!data) |
304 |
return 0; |
305 |
|
306 |
if (length > 9 || (length > 8 && data [0])) |
307 |
{ |
308 |
error ("INTEGER64 length too long"); |
309 |
return 0; |
310 |
} |
311 |
|
312 |
U64TYPE res = data [0] & 0x80 ? 0xffffffffffffffff : 0; |
313 |
|
314 |
while (length--) |
315 |
res = (res << 8) | *data++; |
316 |
|
317 |
return res; |
318 |
} |
319 |
|
320 |
static SV * |
321 |
process_integer64_sv (void) |
322 |
{ |
323 |
return newSViv ((I64TYPE)process_integer64 ()); |
324 |
} |
325 |
|
326 |
static SV * |
327 |
process_unsigned64_sv (void) |
328 |
{ |
329 |
return newSVuv ((U64TYPE)process_integer64 ()); |
330 |
} |
331 |
|
332 |
#endif |
333 |
|
334 |
static SV * |
335 |
process_octet_string_sv (void) |
336 |
{ |
337 |
U32 length = process_length (); |
338 |
|
339 |
U8 *data = getn (length, 0); |
340 |
if (!data) |
341 |
{ |
342 |
error ("OCTET STRING too long"); |
343 |
return &PL_sv_undef; |
344 |
} |
345 |
|
346 |
return newSVpvn (data, length); |
347 |
} |
348 |
|
349 |
static char * |
350 |
write_uv (char *buf, U32 u) |
351 |
{ |
352 |
// the one-digit case is absolutely predominant |
353 |
if (u < 10) |
354 |
*buf++ = u + '0'; |
355 |
else |
356 |
buf += sprintf (buf, "%u", (unsigned int)u); |
357 |
|
358 |
return buf; |
359 |
} |
360 |
|
361 |
static SV * |
362 |
process_object_identifier_sv (void) |
363 |
{ |
364 |
U32 length = process_length (); |
365 |
|
366 |
if (length <= 0) |
367 |
{ |
368 |
error ("OBJECT IDENTIFIER length equal to zero"); |
369 |
return &PL_sv_undef; |
370 |
} |
371 |
|
372 |
U8 *end = cur + length; |
373 |
U32 w = getb (); |
374 |
|
375 |
static char oid[MAX_OID_STRLEN]; // must be static |
376 |
char *app = oid; |
377 |
|
378 |
if (leading_dot < 0) |
379 |
leading_dot = SvTRUE (*hv_fetch ((HV *)SvRV (msg), "_leading_dot", sizeof ("_leading_dot") - 1, 1)); |
380 |
|
381 |
*app = '.'; app += ! ! leading_dot; |
382 |
app = write_uv (app, (U8)w / 40); |
383 |
*app++ = '.'; |
384 |
app = write_uv (app, (U8)w % 40); |
385 |
|
386 |
// we assume an oid component is never > 64 bytes |
387 |
while (cur < end && oid + sizeof (oid) - app > 64) |
388 |
{ |
389 |
w = getb (); |
390 |
*app++ = '.'; |
391 |
app = write_uv (app, w); |
392 |
} |
393 |
|
394 |
return newSVpvn (oid, app - oid); |
395 |
} |
396 |
|
397 |
static AV *av_type; |
398 |
|
399 |
static SV * |
400 |
process_sv (int *found) |
401 |
{ |
402 |
int type = get8 (); |
403 |
|
404 |
*found = type; |
405 |
|
406 |
SV *res; |
407 |
|
408 |
switch (type) |
409 |
{ |
410 |
case ASN_OBJECT_IDENTIFIER: |
411 |
res = process_object_identifier_sv (); |
412 |
break; |
413 |
|
414 |
case ASN_INTEGER32: |
415 |
res = process_integer32_sv (); |
416 |
break; |
417 |
|
418 |
case ASN_UNSIGNED32: |
419 |
case ASN_COUNTER32: |
420 |
case ASN_TIMETICKS: |
421 |
res = process_unsigned32_sv (); |
422 |
break; |
423 |
|
424 |
case ASN_SEQUENCE: |
425 |
res = newSVuv (process_length ()); |
426 |
break; |
427 |
|
428 |
case ASN_OCTET_STRING: |
429 |
case ASN_OPAQUE: |
430 |
res = process_octet_string_sv (); |
431 |
break; |
432 |
|
433 |
default: |
434 |
{ |
435 |
if (type > AvFILLp (av_type) |
436 |
|| AvARRAY (av_type)[type] == 0 |
437 |
|| AvARRAY (av_type)[type] == &PL_sv_undef) |
438 |
{ |
439 |
error ("Unknown ASN.1 type"); |
440 |
return &PL_sv_undef; |
441 |
} |
442 |
|
443 |
dSP; |
444 |
PUSHMARK (SP); |
445 |
EXTEND (SP, 2); |
446 |
PUSHs (msg); |
447 |
PUSHs (sv_2mortal (newSViv (type))); |
448 |
PUTBACK; |
449 |
int count = call_sv (AvARRAY (av_type)[type], G_SCALAR); |
450 |
SPAGAIN; |
451 |
res = count ? SvREFCNT_inc (TOPs) : &PL_sv_undef; |
452 |
} |
453 |
} |
454 |
|
455 |
return errflag ? &PL_sv_undef : res; |
456 |
} |
457 |
|
458 |
static SV * |
459 |
decode_ber () |
460 |
{ |
461 |
int identifier = get8 (); |
462 |
|
463 |
SV *res; |
464 |
|
465 |
int constructed = identifier & ASN_CONSTRUCTED; |
466 |
int klass = identifier & ASN_CLASS_MASK; |
467 |
int tag = identifier & ASN_TAG_MASK; |
468 |
|
469 |
if (tag == ASN_TAG_BER) |
470 |
tag = getb (); |
471 |
|
472 |
#if 0 |
473 |
if (/type & ASN_TAG_MASK) == ASN_TAG_MASK) |
474 |
/* TODO: ber tag follows */; |
475 |
#endif |
476 |
|
477 |
if (constructed) |
478 |
{ |
479 |
U32 len = process_length (); |
480 |
U32 seqend = (cur - buf) + len; |
481 |
AV *av = (AV *)sv_2mortal ((SV *)newAV ()); |
482 |
|
483 |
while (cur < buf + seqend) |
484 |
{ |
485 |
av_push (av, decode_ber ()); |
486 |
} |
487 |
|
488 |
if (cur > buf + seqend) |
489 |
croak ("constructed type %02x overflow (%x %x)\n", identifier, cur - buf, seqend); |
490 |
|
491 |
res = newRV_inc ((SV *)av); |
492 |
} |
493 |
else |
494 |
switch (identifier) |
495 |
{ |
496 |
case ASN_OBJECT_IDENTIFIER: |
497 |
res = process_object_identifier_sv (); |
498 |
break; |
499 |
|
500 |
case ASN_INTEGER32: |
501 |
res = process_integer32_sv (); |
502 |
break; |
503 |
|
504 |
case ASN_UNSIGNED32: |
505 |
case ASN_COUNTER32: |
506 |
case ASN_TIMETICKS: |
507 |
res = process_unsigned32_sv (); |
508 |
break; |
509 |
|
510 |
#if 0 // handled by default case |
511 |
case ASN_IPADDRESS: |
512 |
case ASN_OCTET_STRING: |
513 |
case ASN_OPAQUE: |
514 |
res = process_octet_string_sv (); |
515 |
break; |
516 |
#endif |
517 |
|
518 |
case ASN_COUNTER64: |
519 |
res = process_integer64_sv (); |
520 |
break; |
521 |
|
522 |
default: |
523 |
res = process_octet_string_sv (); |
524 |
break; |
525 |
} |
526 |
|
527 |
if (errflag) |
528 |
croak ("some error"); |
529 |
|
530 |
AV *av = newAV (); |
531 |
av_fill (av, 4-1); |
532 |
AvARRAY (av)[0] = newSVcacheint (tag); |
533 |
AvARRAY (av)[1] = newSVcacheint (klass >> ASN_CLASS_SHIFT); |
534 |
AvARRAY (av)[2] = newSVcacheint (constructed ? 1 : 0); |
535 |
AvARRAY (av)[3] = res; |
536 |
res = newRV_noinc ((SV *)av); |
537 |
|
538 |
return errflag ? &PL_sv_undef : res; |
539 |
} |
540 |
|
541 |
///////////////////////////////////////////////////////////////////////////// |
542 |
|
543 |
#if HAVE_VERSIONSORT |
544 |
|
545 |
static int |
546 |
oid_lex_cmp (const void *a_, const void *b_) |
547 |
{ |
548 |
const char *a = SvPVX (*(SV **)a_); |
549 |
const char *b = SvPVX (*(SV **)b_); |
550 |
|
551 |
a += *a == '.'; |
552 |
b += *b == '.'; |
553 |
|
554 |
return strverscmp (a, b); |
555 |
} |
556 |
|
557 |
#endif |
558 |
|
559 |
MODULE = Net::SNMP::XS PACKAGE = Net::SNMP::XS |
560 |
|
561 |
PROTOTYPES: ENABLE |
562 |
|
563 |
BOOT: |
564 |
{ |
565 |
HV *stash = gv_stashpv ("Net::SNMP::XS", 1); |
566 |
|
567 |
static const struct { |
568 |
const char *name; |
569 |
IV iv; |
570 |
} *civ, const_iv[] = { |
571 |
{ "ASN_BOOLEAN", ASN_BOOLEAN }, |
572 |
{ "ASN_INTEGER32", ASN_INTEGER32 }, |
573 |
{ "ASN_BIT_STRING", ASN_BIT_STRING }, |
574 |
{ "ASN_OCTET_STRING", ASN_OCTET_STRING }, |
575 |
{ "ASN_NULL", ASN_NULL }, |
576 |
{ "ASN_OBJECT_IDENTIFIER", ASN_OBJECT_IDENTIFIER }, |
577 |
{ "ASN_TAG_BER", ASN_TAG_BER }, |
578 |
{ "ASN_TAG_MASK", ASN_TAG_MASK }, |
579 |
{ "ASN_CONSTRUCTED", ASN_CONSTRUCTED }, |
580 |
{ "ASN_UNIVERSAL", ASN_UNIVERSAL >> ASN_CLASS_SHIFT }, |
581 |
{ "ASN_APPLICATION", ASN_APPLICATION >> ASN_CLASS_SHIFT }, |
582 |
{ "ASN_CONTEXT", ASN_CONTEXT >> ASN_CLASS_SHIFT }, |
583 |
{ "ASN_PRIVATE", ASN_PRIVATE >> ASN_CLASS_SHIFT }, |
584 |
{ "ASN_CLASS_MASK", ASN_CLASS_MASK }, |
585 |
{ "ASN_CLASS_SHIFT", ASN_CLASS_SHIFT }, |
586 |
{ "ASN_SEQUENCE", ASN_SEQUENCE }, |
587 |
{ "ASN_IPADDRESS", ASN_IPADDRESS }, |
588 |
{ "ASN_COUNTER32", ASN_COUNTER32 }, |
589 |
{ "ASN_UNSIGNED32", ASN_UNSIGNED32 }, |
590 |
{ "ASN_TIMETICKS", ASN_TIMETICKS }, |
591 |
{ "ASN_OPAQUE", ASN_OPAQUE }, |
592 |
{ "ASN_COUNTER64", ASN_COUNTER64 }, |
593 |
}; |
594 |
|
595 |
for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) |
596 |
newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); |
597 |
|
598 |
av_type = newAV (); |
599 |
} |
600 |
|
601 |
void |
602 |
set_type (int type, SV *cv) |
603 |
CODE: |
604 |
cv = x_get_cv (cv); |
605 |
assert (SvTYPE (cv) == SVt_PVCV); |
606 |
av_store (av_type, type, SvREFCNT_inc_NN (cv)); |
607 |
|
608 |
#if 1 |
609 |
|
610 |
SV * |
611 |
decode_ber (SV *ber) |
612 |
CODE: |
613 |
{ |
614 |
clear_bufobj (); |
615 |
|
616 |
errflag = 0; |
617 |
leading_dot = 0; |
618 |
|
619 |
bufsv = ber; |
620 |
|
621 |
buf = SvPVbyte (bufsv, len); |
622 |
cur = buf; |
623 |
rem = len; |
624 |
|
625 |
RETVAL = decode_ber (); |
626 |
} |
627 |
OUTPUT: RETVAL |
628 |
|
629 |
#endif |
630 |
|
631 |
MODULE = Net::SNMP::XS PACKAGE = Net::SNMP::Message |
632 |
|
633 |
void |
634 |
_buffer_append (BUFOBJ self, SV *value) |
635 |
ALIAS: |
636 |
_buffer_put = 1 |
637 |
PPCODE: |
638 |
{ |
639 |
STRLEN vlen; |
640 |
const char *vstr = SvPVbyte (value, vlen); |
641 |
|
642 |
if (ix) |
643 |
sv_insert (bufsv, 0, 0, vstr, vlen); |
644 |
else |
645 |
sv_catpvn (bufsv, vstr, vlen); |
646 |
|
647 |
buf = SvPVbyte (bufsv, len); |
648 |
cur = buf; |
649 |
rem = len; |
650 |
|
651 |
SV *len_sv = *hv_fetch ((HV *)cur_bufobj, "_length", sizeof ("_length") - 1, 1); |
652 |
sv_setiv (len_sv, len); |
653 |
|
654 |
// some callers test for defined'ness of the returnvalue. *sigh* |
655 |
XPUSHs (&PL_sv_yes); |
656 |
} |
657 |
|
658 |
void |
659 |
_buffer_get (BUFOBJ self, int count = -1) |
660 |
PPCODE: |
661 |
{ |
662 |
// grrr. |
663 |
if (count < 0) |
664 |
{ |
665 |
hv_delete ((HV *)SvRV (self), "_index" , 6, G_DISCARD); |
666 |
hv_delete ((HV *)SvRV (self), "_length", 7, G_DISCARD); |
667 |
XPUSHs (sv_2mortal (newSVsv (bufsv))); |
668 |
sv_setpvn (bufsv, "", 0); |
669 |
|
670 |
buf = ""; |
671 |
cur = buf; |
672 |
rem = 0; |
673 |
|
674 |
XSRETURN (1); |
675 |
} |
676 |
|
677 |
char *data = getn (count, 0); |
678 |
|
679 |
if (data) |
680 |
XPUSHs (sv_2mortal (newSVpvn (data, count))); |
681 |
} |
682 |
|
683 |
U32 |
684 |
index (BUFOBJ self, int ndx = -1) |
685 |
CODE: |
686 |
{ |
687 |
if (ndx >= 0 && ndx < len) |
688 |
{ |
689 |
cur = buf + ndx; |
690 |
rem = len - ndx; |
691 |
} |
692 |
|
693 |
RETVAL = cur - buf; |
694 |
} |
695 |
OUTPUT: RETVAL |
696 |
|
697 |
U32 |
698 |
_process_length (BUFOBJ self, ...) |
699 |
ALIAS: |
700 |
_process_sequence = 0 |
701 |
CODE: |
702 |
RETVAL = process_length (); |
703 |
OUTPUT: RETVAL |
704 |
|
705 |
SV * |
706 |
_process_integer32 (BUFOBJ self, ...) |
707 |
CODE: |
708 |
RETVAL = process_integer32_sv (); |
709 |
OUTPUT: RETVAL |
710 |
|
711 |
SV * |
712 |
_process_counter (BUFOBJ self, ...) |
713 |
ALIAS: |
714 |
_process_gauge = 0 |
715 |
_process_timeticks = 0 |
716 |
CODE: |
717 |
RETVAL = process_unsigned32_sv (); |
718 |
OUTPUT: RETVAL |
719 |
|
720 |
#if IVSIZE >= 8 |
721 |
|
722 |
SV * |
723 |
_process_counter64 (BUFOBJ self, ...) |
724 |
CODE: |
725 |
RETVAL = process_unsigned64_sv (); |
726 |
OUTPUT: RETVAL |
727 |
|
728 |
#endif |
729 |
|
730 |
SV * |
731 |
_process_object_identifier (BUFOBJ self, ...) |
732 |
CODE: |
733 |
RETVAL = process_object_identifier_sv (); |
734 |
OUTPUT: RETVAL |
735 |
|
736 |
SV * |
737 |
_process_octet_string (BUFOBJ self, ...) |
738 |
ALIAS: |
739 |
_process_opaque = 0 |
740 |
CODE: |
741 |
RETVAL = process_octet_string_sv (); |
742 |
OUTPUT: RETVAL |
743 |
|
744 |
SV * |
745 |
_process_ipaddress (BUFOBJ self, ...) |
746 |
CODE: |
747 |
{ |
748 |
U32 length = process_length (); |
749 |
if (length != 4) |
750 |
{ |
751 |
error ("IP ADDRESS length not four"); |
752 |
XSRETURN_UNDEF; |
753 |
} |
754 |
|
755 |
U8 *data = getn (4, "\x00\x00\x00\x00"); |
756 |
RETVAL = newSVpvf ("%d.%d.%d.%d", data [0], data [1], data [2], data [3]); |
757 |
} |
758 |
OUTPUT: RETVAL |
759 |
|
760 |
SV * |
761 |
process (BUFOBJ self, SV *expected = &PL_sv_undef, SV *found = 0) |
762 |
CODE: |
763 |
{ |
764 |
int type; |
765 |
|
766 |
RETVAL = process_sv (&type); |
767 |
|
768 |
if (found) |
769 |
sv_setiv (found, type); |
770 |
|
771 |
if (SvOK (expected) && type != SvIV (expected)) |
772 |
error ("Expected a different type than found"); |
773 |
} |
774 |
OUTPUT: RETVAL |
775 |
|
776 |
MODULE = Net::SNMP::XS PACKAGE = Net::SNMP::PDU |
777 |
|
778 |
SV * |
779 |
_process_var_bind_list (BUFOBJ self) |
780 |
CODE: |
781 |
{ |
782 |
if (get8 () != ASN_SEQUENCE) |
783 |
error ("SEQUENCE expected at beginning of VarBindList"); |
784 |
int seqlen = process_length (); |
785 |
U8 *end = cur + seqlen; |
786 |
|
787 |
HV *list = newHV (); |
788 |
AV *names = newAV (); |
789 |
HV *types = newHV (); |
790 |
|
791 |
hv_store ((HV *)cur_bufobj, "_var_bind_list" , sizeof ("_var_bind_list" ) - 1, newRV_noinc ((SV *)list ), 0); |
792 |
hv_store ((HV *)cur_bufobj, "_var_bind_names", sizeof ("_var_bind_names") - 1, newRV_noinc ((SV *)names), 0); |
793 |
hv_store ((HV *)cur_bufobj, "_var_bind_types", sizeof ("_var_bind_types") - 1, newRV_noinc ((SV *)types), 0); |
794 |
|
795 |
while (cur < end && !errflag) |
796 |
{ |
797 |
// SEQUENCE ObjectName ObjectSyntax |
798 |
if (get8 () != ASN_SEQUENCE) |
799 |
error ("SEQUENCE expected at beginning of VarBind"); |
800 |
process_length (); |
801 |
|
802 |
if (get8 () != ASN_OBJECT_IDENTIFIER) |
803 |
error ("OBJECT IDENTIFIER expected at beginning of VarBind"); |
804 |
int type, oidlen; |
805 |
SV *oid = process_object_identifier_sv (); |
806 |
SV *val = process_sv (&type); |
807 |
|
808 |
hv_store_ent (types, oid, newSViv (type), 0); |
809 |
hv_store_ent (list , oid, val, 0); |
810 |
av_push (names, oid); |
811 |
} |
812 |
|
813 |
// sigh - great design to do it here |
814 |
SV *pdu_type = *hv_fetch ((HV *)cur_bufobj, "_pdu_type" , sizeof ("_pdu_type" ) - 1, 1); |
815 |
|
816 |
if (SvIV (pdu_type) == 0xa8) // REPORT |
817 |
{ |
818 |
PUSHMARK (SP); |
819 |
XPUSHs (msg); |
820 |
PUTBACK; |
821 |
call_method ("_report_pdu_error", G_VOID | G_DISCARD); |
822 |
SPAGAIN; |
823 |
XSRETURN_EMPTY; |
824 |
} |
825 |
|
826 |
RETVAL = newRV_inc ((SV *)list); |
827 |
} |
828 |
OUTPUT: RETVAL |
829 |
|
830 |
MODULE = Net::SNMP::XS PACKAGE = Net::SNMP |
831 |
|
832 |
void |
833 |
oid_base_match (SV *base_, SV *oid_) |
834 |
PROTOTYPE: $$ |
835 |
ALIAS: |
836 |
oid_context_match = 0 |
837 |
PPCODE: |
838 |
{ |
839 |
if (!SvOK (base_) || !SvOK (oid_)) |
840 |
XSRETURN_NO; |
841 |
|
842 |
STRLEN blen, olen; |
843 |
char *base = SvPVbyte (base_, blen); |
844 |
char *oid = SvPVbyte (oid_ , olen); |
845 |
|
846 |
blen -= *base == '.'; base += *base == '.'; |
847 |
olen -= *base == '.'; oid += *oid == '.'; |
848 |
|
849 |
if (olen < blen) |
850 |
XSRETURN_NO; |
851 |
|
852 |
if (memcmp (base, oid, blen)) |
853 |
XSRETURN_NO; |
854 |
|
855 |
if (oid [blen] && oid [blen] != '.') |
856 |
XSRETURN_NO; |
857 |
|
858 |
XSRETURN_YES; |
859 |
} |
860 |
|
861 |
#if HAVE_VERSIONSORT |
862 |
|
863 |
void |
864 |
oid_lex_sort (...) |
865 |
PROTOTYPE: @ |
866 |
PPCODE: |
867 |
{ |
868 |
// make sure SvPVX is valid |
869 |
int i; |
870 |
for (i = items; i--; ) |
871 |
{ |
872 |
SV *sv = ST (i); |
873 |
|
874 |
if (SvTYPE (sv) < SVt_PV || SvTYPE (sv) == SVt_PVAV && SvTYPE (sv) == SVt_PVHV) |
875 |
SvPV_force_nolen (sv); |
876 |
} |
877 |
|
878 |
qsort (&ST (0), items, sizeof (SV *), oid_lex_cmp); |
879 |
|
880 |
EXTEND (SP, items); |
881 |
// we cheat somewhat by not returning copies here |
882 |
for (i = 0; i < items; ++i) |
883 |
PUSHs (sv_2mortal (SvREFCNT_inc (ST (i)))); |
884 |
} |
885 |
|
886 |
int |
887 |
_index_cmp (const char *a, const char *b) |
888 |
PROTOTYPE: $$ |
889 |
CODE: |
890 |
RETVAL = strverscmp (a, b); |
891 |
OUTPUT: RETVAL |
892 |
|
893 |
#endif |
894 |
|