| 1 |
#include "EXTERN.h" |
| 2 |
#include "perl.h" |
| 3 |
#include "XSUB.h" |
| 4 |
|
| 5 |
#include <math.h> |
| 6 |
|
| 7 |
// C99 required! |
| 8 |
// this is not just for comments, but also for |
| 9 |
// integer constant semantics, |
| 10 |
// sscanf format modifiers and more. |
| 11 |
|
| 12 |
enum { |
| 13 |
// ASN_TAG |
| 14 |
ASN_BOOLEAN = 0x01, |
| 15 |
ASN_INTEGER = 0x02, |
| 16 |
ASN_BIT_STRING = 0x03, |
| 17 |
ASN_OCTET_STRING = 0x04, |
| 18 |
ASN_NULL = 0x05, |
| 19 |
ASN_OBJECT_IDENTIFIER = 0x06, |
| 20 |
ASN_OID = 0x06, |
| 21 |
ASN_OBJECT_DESCRIPTOR = 0x07, |
| 22 |
ASN_EXTERNAL = 0x08, |
| 23 |
ASN_REAL = 0x09, |
| 24 |
ASN_ENUMERATED = 0x0a, |
| 25 |
ASN_EMBEDDED_PDV = 0x0b, |
| 26 |
ASN_UTF8_STRING = 0x0c, |
| 27 |
ASN_RELATIVE_OID = 0x0d, |
| 28 |
ASN_SEQUENCE = 0x10, |
| 29 |
ASN_SET = 0x11, |
| 30 |
ASN_NUMERIC_STRING = 0x12, |
| 31 |
ASN_PRINTABLE_STRING = 0x13, |
| 32 |
ASN_TELETEX_STRING = 0x14, |
| 33 |
ASN_T61_STRING = 0x14, |
| 34 |
ASN_VIDEOTEX_STRING = 0x15, |
| 35 |
ASN_IA5_STRING = 0x16, |
| 36 |
ASN_ASCII_STRING = 0x16, |
| 37 |
ASN_UTC_TIME = 0x17, |
| 38 |
ASN_GENERALIZED_TIME = 0x18, |
| 39 |
ASN_GRAPHIC_STRING = 0x19, |
| 40 |
ASN_VISIBLE_STRING = 0x1a, |
| 41 |
ASN_ISO646_STRING = 0x1a, |
| 42 |
ASN_GENERAL_STRING = 0x1b, |
| 43 |
ASN_UNIVERSAL_STRING = 0x1c, |
| 44 |
ASN_CHARACTER_STRING = 0x1d, |
| 45 |
ASN_BMP_STRING = 0x1e, |
| 46 |
|
| 47 |
ASN_TAG_BER = 0x1f, |
| 48 |
ASN_TAG_MASK = 0x1f, |
| 49 |
|
| 50 |
// primitive/constructed |
| 51 |
ASN_CONSTRUCTED = 0x20, |
| 52 |
|
| 53 |
// ASN_CLASS |
| 54 |
ASN_UNIVERSAL = 0x00, |
| 55 |
ASN_APPLICATION = 0x01, |
| 56 |
ASN_CONTEXT = 0x02, |
| 57 |
ASN_PRIVATE = 0x03, |
| 58 |
|
| 59 |
ASN_CLASS_MASK = 0xc0, |
| 60 |
ASN_CLASS_SHIFT = 6, |
| 61 |
|
| 62 |
// ASN_APPLICATION SNMP |
| 63 |
SNMP_IPADDRESS = 0x00, |
| 64 |
SNMP_COUNTER32 = 0x01, |
| 65 |
SNMP_GAUGE32 = 0x02, |
| 66 |
SNMP_UNSIGNED32 = 0x02, |
| 67 |
SNMP_TIMETICKS = 0x03, |
| 68 |
SNMP_OPAQUE = 0x04, |
| 69 |
SNMP_COUNTER64 = 0x06, |
| 70 |
}; |
| 71 |
|
| 72 |
// low-level types this module can ecode the above (and more) into |
| 73 |
enum { |
| 74 |
BER_TYPE_BYTES, |
| 75 |
BER_TYPE_UTF8, |
| 76 |
BER_TYPE_UCS2, |
| 77 |
BER_TYPE_UCS4, |
| 78 |
BER_TYPE_INT, |
| 79 |
BER_TYPE_OID, |
| 80 |
BER_TYPE_RELOID, |
| 81 |
BER_TYPE_NULL, |
| 82 |
BER_TYPE_BOOL, |
| 83 |
BER_TYPE_REAL, |
| 84 |
BER_TYPE_IPADDRESS, |
| 85 |
BER_TYPE_CROAK, |
| 86 |
}; |
| 87 |
|
| 88 |
// tuple array indices |
| 89 |
enum { |
| 90 |
BER_CLASS = 0, |
| 91 |
BER_TAG = 1, |
| 92 |
BER_FLAGS = 2, |
| 93 |
BER_DATA = 3, |
| 94 |
BER_ARRAYSIZE |
| 95 |
}; |
| 96 |
|
| 97 |
#define MAX_OID_STRLEN 4096 |
| 98 |
|
| 99 |
typedef void profile_type; |
| 100 |
|
| 101 |
static profile_type *cur_profile, *default_profile; |
| 102 |
static SV *buf_sv; // encoding buffer |
| 103 |
static U8 *buf, *cur, *end; // buffer start, current, end |
| 104 |
|
| 105 |
#if PERL_VERSION < 18 |
| 106 |
# define utf8_to_uvchr_buf(s,e,l) utf8_to_uvchr (s, l) |
| 107 |
#endif |
| 108 |
|
| 109 |
#ifndef SvREFCNT_inc_NN |
| 110 |
#define SvREFCNT_inc_NN(x) SvREFCNT_inc (x) |
| 111 |
#endif |
| 112 |
#ifndef SvREFCNT_dec_NN |
| 113 |
#define SvREFCNT_dec_NN(x) SvREFCNT_dec (x) |
| 114 |
#endif |
| 115 |
|
| 116 |
#if __GNUC__ >= 3 |
| 117 |
# define expect(expr,value) __builtin_expect ((expr), (value)) |
| 118 |
# define INLINE static inline |
| 119 |
#else |
| 120 |
# define expect(expr,value) (expr) |
| 121 |
# define INLINE static |
| 122 |
#endif |
| 123 |
|
| 124 |
#define expect_false(expr) expect ((expr) != 0, 0) |
| 125 |
#define expect_true(expr) expect ((expr) != 0, 1) |
| 126 |
|
| 127 |
///////////////////////////////////////////////////////////////////////////// |
| 128 |
|
| 129 |
static SV *sviv_cache[32]; |
| 130 |
|
| 131 |
// for "small" integers, return a readonly sv, otherwise create a new one |
| 132 |
static SV *newSVcacheint (int val) |
| 133 |
{ |
| 134 |
if (expect_false (val < 0 || val >= sizeof (sviv_cache))) |
| 135 |
return newSViv (val); |
| 136 |
|
| 137 |
if (expect_false (!sviv_cache [val])) |
| 138 |
{ |
| 139 |
sviv_cache [val] = newSVuv (val); |
| 140 |
SvREADONLY_on (sviv_cache [val]); |
| 141 |
} |
| 142 |
|
| 143 |
return SvREFCNT_inc_NN (sviv_cache [val]); |
| 144 |
} |
| 145 |
|
| 146 |
///////////////////////////////////////////////////////////////////////////// |
| 147 |
|
| 148 |
static HV *profile_stash; |
| 149 |
|
| 150 |
static profile_type * |
| 151 |
SvPROFILE (SV *profile) |
| 152 |
{ |
| 153 |
if (!SvOK (profile)) |
| 154 |
return default_profile; |
| 155 |
|
| 156 |
if (!SvROK (profile)) |
| 157 |
croak ("Convert::BER::XS::Profile expected"); |
| 158 |
|
| 159 |
profile = SvRV (profile); |
| 160 |
|
| 161 |
if (SvSTASH (profile) != profile_stash) |
| 162 |
croak ("Convert::BER::XS::Profile expected"); |
| 163 |
|
| 164 |
return (void *)profile; |
| 165 |
} |
| 166 |
|
| 167 |
static int |
| 168 |
profile_lookup (profile_type *profile, int klass, int tag) |
| 169 |
{ |
| 170 |
SV *sv = (SV *)profile; |
| 171 |
U32 idx = (tag << 2) + klass; |
| 172 |
|
| 173 |
if (expect_false (idx >= SvCUR (sv))) |
| 174 |
return BER_TYPE_BYTES; |
| 175 |
|
| 176 |
return SvPVX (sv)[idx]; |
| 177 |
} |
| 178 |
|
| 179 |
static void |
| 180 |
profile_set (profile_type *profile, int klass, int tag, int type) |
| 181 |
{ |
| 182 |
SV *sv = (SV *)profile; |
| 183 |
U32 idx = (tag << 2) + klass; |
| 184 |
STRLEN oldlen = SvCUR (sv); |
| 185 |
STRLEN newlen = idx + 2; |
| 186 |
|
| 187 |
if (idx >= oldlen) |
| 188 |
{ |
| 189 |
sv_grow (sv, newlen); |
| 190 |
memset (SvPVX (sv) + oldlen, BER_TYPE_BYTES, newlen - oldlen); |
| 191 |
SvCUR_set (sv, newlen); |
| 192 |
} |
| 193 |
|
| 194 |
SvPVX (sv)[idx] = type; |
| 195 |
} |
| 196 |
|
| 197 |
static SV * |
| 198 |
profile_new (void) |
| 199 |
{ |
| 200 |
SV *sv = newSVpvn ("", 0); |
| 201 |
|
| 202 |
static const struct { |
| 203 |
int klass; |
| 204 |
int tag; |
| 205 |
int type; |
| 206 |
} *celem, default_map[] = { |
| 207 |
{ ASN_UNIVERSAL, ASN_BOOLEAN , BER_TYPE_BOOL }, |
| 208 |
{ ASN_UNIVERSAL, ASN_INTEGER , BER_TYPE_INT }, |
| 209 |
{ ASN_UNIVERSAL, ASN_NULL , BER_TYPE_NULL }, |
| 210 |
{ ASN_UNIVERSAL, ASN_OBJECT_IDENTIFIER, BER_TYPE_OID }, |
| 211 |
{ ASN_UNIVERSAL, ASN_RELATIVE_OID , BER_TYPE_RELOID }, |
| 212 |
{ ASN_UNIVERSAL, ASN_REAL , BER_TYPE_REAL }, |
| 213 |
{ ASN_UNIVERSAL, ASN_ENUMERATED , BER_TYPE_INT }, |
| 214 |
{ ASN_UNIVERSAL, ASN_UTF8_STRING , BER_TYPE_UTF8 }, |
| 215 |
{ ASN_UNIVERSAL, ASN_BMP_STRING , BER_TYPE_UCS2 }, |
| 216 |
{ ASN_UNIVERSAL, ASN_UNIVERSAL_STRING , BER_TYPE_UCS4 }, |
| 217 |
}; |
| 218 |
|
| 219 |
for (celem = default_map + sizeof (default_map) / sizeof (default_map [0]); celem-- > default_map; ) |
| 220 |
profile_set ((profile_type *)sv, celem->klass, celem->tag, celem->type); |
| 221 |
|
| 222 |
return sv_bless (newRV_noinc (sv), profile_stash); |
| 223 |
} |
| 224 |
|
| 225 |
///////////////////////////////////////////////////////////////////////////// |
| 226 |
// decoder |
| 227 |
|
| 228 |
static void |
| 229 |
error (const char *errmsg) |
| 230 |
{ |
| 231 |
croak ("%s at offset 0x%04x", errmsg, cur - buf); |
| 232 |
} |
| 233 |
|
| 234 |
static void |
| 235 |
want (UV count) |
| 236 |
{ |
| 237 |
if (expect_false ((uintptr_t)(end - cur) < count)) |
| 238 |
error ("unexpected end of message buffer"); |
| 239 |
} |
| 240 |
|
| 241 |
// get_* functions fetch something from the buffer |
| 242 |
// decode_* functions use get_* fun ctions to decode ber values |
| 243 |
|
| 244 |
// get single octet |
| 245 |
static U8 |
| 246 |
get_u8 (void) |
| 247 |
{ |
| 248 |
if (cur == end) |
| 249 |
error ("unexpected end of message buffer"); |
| 250 |
|
| 251 |
return *cur++; |
| 252 |
} |
| 253 |
|
| 254 |
// get n octets |
| 255 |
static U8 * |
| 256 |
get_n (UV count) |
| 257 |
{ |
| 258 |
want (count); |
| 259 |
U8 *res = cur; |
| 260 |
cur += count; |
| 261 |
return res; |
| 262 |
} |
| 263 |
|
| 264 |
// get ber-encoded integer (i.e. pack "w") |
| 265 |
static UV |
| 266 |
get_w (void) |
| 267 |
{ |
| 268 |
UV res = 0; |
| 269 |
U8 c = get_u8 (); |
| 270 |
|
| 271 |
if (expect_false (c == 0x80)) |
| 272 |
error ("invalid BER padding (X.690 8.1.2.4.2, 8.19.2)"); |
| 273 |
|
| 274 |
for (;;) |
| 275 |
{ |
| 276 |
if (expect_false (res >> UVSIZE * 8 - 7)) |
| 277 |
error ("BER variable length integer overflow"); |
| 278 |
|
| 279 |
res = (res << 7) | (c & 0x7f); |
| 280 |
|
| 281 |
if (expect_true (!(c & 0x80))) |
| 282 |
return res; |
| 283 |
|
| 284 |
c = get_u8 (); |
| 285 |
} |
| 286 |
} |
| 287 |
|
| 288 |
static UV |
| 289 |
get_length (void) |
| 290 |
{ |
| 291 |
UV res = get_u8 (); |
| 292 |
|
| 293 |
if (expect_false (res & 0x80)) |
| 294 |
{ |
| 295 |
U8 cnt = res & 0x7f; |
| 296 |
|
| 297 |
// this genewrates quite ugly code, but the overhead |
| 298 |
// of copying the bytes for these lengths is probably so high |
| 299 |
// that a slightly inefficient get_length won't matter. |
| 300 |
|
| 301 |
if (expect_false (cnt == 0)) |
| 302 |
error ("invalid use of indefinite BER length form in primitive encoding (X.690 8.1.3.2)"); |
| 303 |
|
| 304 |
if (expect_false (cnt > UVSIZE)) |
| 305 |
error ("BER value length too long (must fit into UV) or BER reserved value in length (X.690 8.1.3.5)"); |
| 306 |
|
| 307 |
want (cnt); |
| 308 |
|
| 309 |
res = 0; |
| 310 |
do |
| 311 |
res = (res << 8) | *cur++; |
| 312 |
while (--cnt); |
| 313 |
} |
| 314 |
|
| 315 |
return res; |
| 316 |
} |
| 317 |
|
| 318 |
static SV * |
| 319 |
decode_int (UV len) |
| 320 |
{ |
| 321 |
if (!len) |
| 322 |
error ("invalid BER_TYPE_INT length zero (X.690 8.3.1)"); |
| 323 |
|
| 324 |
U8 *data = get_n (len); |
| 325 |
|
| 326 |
if (expect_false (len > 1)) |
| 327 |
{ |
| 328 |
U16 mask = (data [0] << 8) | data [1] & 0xff80; |
| 329 |
|
| 330 |
if (expect_false (mask == 0xff80 || mask == 0x0000)) |
| 331 |
error ("invalid padding in BER_TYPE_INT (X.690 8.3.2)"); |
| 332 |
} |
| 333 |
|
| 334 |
int negative = data [0] & 0x80; |
| 335 |
|
| 336 |
UV val = negative ? -1 : 0; // copy signbit to all bits |
| 337 |
|
| 338 |
if (len > UVSIZE + (!negative && !*data)) |
| 339 |
error ("BER_TYPE_INT overflow"); |
| 340 |
|
| 341 |
do |
| 342 |
val = (val << 8) | *data++; |
| 343 |
while (--len); |
| 344 |
|
| 345 |
// the cast to IV relies on implementation-defined behaviour (two's complement cast) |
| 346 |
// but that's ok, as perl relies on it as well. |
| 347 |
return negative ? newSViv ((IV)val) : newSVuv (val); |
| 348 |
} |
| 349 |
|
| 350 |
static SV * |
| 351 |
decode_data (UV len) |
| 352 |
{ |
| 353 |
return newSVpvn ((char *)get_n (len), len); |
| 354 |
} |
| 355 |
|
| 356 |
// helper for decode_object_identifier |
| 357 |
static char * |
| 358 |
write_uv (char *buf, UV u) |
| 359 |
{ |
| 360 |
// the one-digit case is absolutely predominant, so this pays off (hopefully) |
| 361 |
if (expect_true (u < 10)) |
| 362 |
*buf++ = u + '0'; |
| 363 |
else |
| 364 |
{ |
| 365 |
// this *could* be done much faster using branchless fixed-point arithmetics |
| 366 |
char *beg = buf; |
| 367 |
|
| 368 |
do |
| 369 |
{ |
| 370 |
*buf++ = u % 10 + '0'; |
| 371 |
u /= 10; |
| 372 |
} |
| 373 |
while (u); |
| 374 |
|
| 375 |
// reverse digits |
| 376 |
char *ptr = buf; |
| 377 |
while (--ptr > beg) |
| 378 |
{ |
| 379 |
char c = *ptr; |
| 380 |
*ptr = *beg; |
| 381 |
*beg = c; |
| 382 |
++beg; |
| 383 |
} |
| 384 |
} |
| 385 |
|
| 386 |
return buf; |
| 387 |
} |
| 388 |
|
| 389 |
static SV * |
| 390 |
decode_oid (UV len, int relative) |
| 391 |
{ |
| 392 |
if (len <= 0) |
| 393 |
{ |
| 394 |
error ("BER_TYPE_OID length must not be zero"); |
| 395 |
return &PL_sv_undef; |
| 396 |
} |
| 397 |
|
| 398 |
U8 *end = cur + len; |
| 399 |
UV w = get_w (); |
| 400 |
|
| 401 |
static char oid[MAX_OID_STRLEN]; // static, because too large for stack |
| 402 |
char *app = oid; |
| 403 |
|
| 404 |
if (relative) |
| 405 |
app = write_uv (app, w); |
| 406 |
else |
| 407 |
{ |
| 408 |
UV w1, w2; |
| 409 |
|
| 410 |
if (w < 2 * 40) |
| 411 |
(w1 = w / 40), (w2 = w % 40); |
| 412 |
else |
| 413 |
(w1 = 2), (w2 = w - 2 * 40); |
| 414 |
|
| 415 |
app = write_uv (app, w1); |
| 416 |
*app++ = '.'; |
| 417 |
app = write_uv (app, w2); |
| 418 |
} |
| 419 |
|
| 420 |
while (cur < end) |
| 421 |
{ |
| 422 |
// we assume an oid component is never > 64 digits |
| 423 |
if (oid + sizeof (oid) - app < 64) |
| 424 |
croak ("BER_TYPE_OID to long to decode"); |
| 425 |
|
| 426 |
w = get_w (); |
| 427 |
*app++ = '.'; |
| 428 |
app = write_uv (app, w); |
| 429 |
} |
| 430 |
|
| 431 |
return newSVpvn (oid, app - oid); |
| 432 |
} |
| 433 |
|
| 434 |
// oh my, this is a total mess |
| 435 |
static SV * |
| 436 |
decode_real (UV len) |
| 437 |
{ |
| 438 |
SV *res; |
| 439 |
U8 *beg = cur; |
| 440 |
|
| 441 |
if (len == 0) |
| 442 |
res = newSVnv (0.); |
| 443 |
else |
| 444 |
{ |
| 445 |
U8 info = get_u8 (); |
| 446 |
|
| 447 |
if (info & 0x80) |
| 448 |
{ |
| 449 |
// binary |
| 450 |
static const U8 base[] = { 2, 8, 16, 0 }; |
| 451 |
NV S = info & 0x40 ? -1 : 1; // sign |
| 452 |
NV B = base [(info >> 4) & 3]; // base |
| 453 |
NV F = 1 << ((info >> 2) & 3); // scale factor ("shift") |
| 454 |
int L = info & 3; // exponent length |
| 455 |
|
| 456 |
if (!B) |
| 457 |
croak ("BER_TYPE_REAL binary encoding uses invalid base (0x%02x)", info); |
| 458 |
|
| 459 |
SAVETMPS; |
| 460 |
|
| 461 |
SV *E = sv_2mortal (decode_int (L == 3 ? get_u8 () : L + 1)); |
| 462 |
SV *M = sv_2mortal (decode_int (len - (cur - beg))); |
| 463 |
|
| 464 |
res = newSVnv (S * SvNV (M) * F * Perl_pow (B, SvNV (E))); |
| 465 |
|
| 466 |
FREETMPS; |
| 467 |
} |
| 468 |
else if (info & 0x40) |
| 469 |
{ |
| 470 |
// SpecialRealValue |
| 471 |
U8 special = get_u8 (); |
| 472 |
NV val; |
| 473 |
|
| 474 |
switch (special) |
| 475 |
{ |
| 476 |
case 0x40: val = NV_INF; break; |
| 477 |
case 0x41: val = -NV_INF; break; |
| 478 |
case 0x42: val = NV_NAN; break; |
| 479 |
case 0x43: val = -(NV)0.; break; |
| 480 |
|
| 481 |
default: |
| 482 |
croak ("BER_TYPE_REAL SpecialRealValues invalid encoding 0x%02x (X.690 8.5.9)", special); |
| 483 |
} |
| 484 |
|
| 485 |
res = newSVnv (val); |
| 486 |
} |
| 487 |
else |
| 488 |
{ |
| 489 |
// decimal |
| 490 |
dSP; |
| 491 |
SAVETMPS; |
| 492 |
PUSHMARK (SP); |
| 493 |
EXTEND (SP, 2); |
| 494 |
PUSHs (sv_2mortal (newSVcacheint (info & 0x3f))); |
| 495 |
PUSHs (sv_2mortal (newSVpvn (get_n (len - 1), len - 1))); |
| 496 |
PUTBACK; |
| 497 |
call_pv ("Convert::BER::XS::_decode_real_decimal", G_SCALAR); |
| 498 |
SPAGAIN; |
| 499 |
res = SvREFCNT_inc_NN (POPs); |
| 500 |
PUTBACK; |
| 501 |
FREETMPS; |
| 502 |
} |
| 503 |
} |
| 504 |
|
| 505 |
if (cur - beg != len) |
| 506 |
{ |
| 507 |
SvREFCNT_dec_NN (res); |
| 508 |
croak ("BER_TYPE_REAL invalid content length (X.690 8,5)"); |
| 509 |
} |
| 510 |
|
| 511 |
return res; |
| 512 |
} |
| 513 |
|
| 514 |
// TODO: this is unacceptably slow |
| 515 |
static SV * |
| 516 |
decode_ucs (UV len, int chrsize) |
| 517 |
{ |
| 518 |
if (len & (chrsize - 1)) |
| 519 |
croak ("BER_TYPE_UCS has an invalid number of octets (%d)", len); |
| 520 |
|
| 521 |
SV *res = NEWSV (0, 0); |
| 522 |
|
| 523 |
while (len) |
| 524 |
{ |
| 525 |
U8 b1 = get_u8 (); |
| 526 |
U8 b2 = get_u8 (); |
| 527 |
U32 chr = (b1 << 8) | b2; |
| 528 |
|
| 529 |
if (chrsize == 4) |
| 530 |
{ |
| 531 |
U8 b3 = get_u8 (); |
| 532 |
U8 b4 = get_u8 (); |
| 533 |
chr = (chr << 16) | (b3 << 8) | b4; |
| 534 |
} |
| 535 |
|
| 536 |
U8 uchr [UTF8_MAXBYTES]; |
| 537 |
int uclen = uvuni_to_utf8 (uchr, chr) - uchr; |
| 538 |
|
| 539 |
sv_catpvn (res, (const char *)uchr, uclen); |
| 540 |
len -= chrsize; |
| 541 |
} |
| 542 |
|
| 543 |
SvUTF8_on (res); |
| 544 |
|
| 545 |
return res; |
| 546 |
} |
| 547 |
|
| 548 |
static SV * |
| 549 |
decode_ber (void) |
| 550 |
{ |
| 551 |
int identifier = get_u8 (); |
| 552 |
|
| 553 |
SV *res; |
| 554 |
|
| 555 |
int constructed = identifier & ASN_CONSTRUCTED; |
| 556 |
int klass = (identifier & ASN_CLASS_MASK) >> ASN_CLASS_SHIFT; |
| 557 |
int tag = identifier & ASN_TAG_MASK; |
| 558 |
|
| 559 |
if (tag == ASN_TAG_BER) |
| 560 |
tag = get_w (); |
| 561 |
|
| 562 |
if (constructed) |
| 563 |
{ |
| 564 |
want (1); |
| 565 |
AV *av = (AV *)sv_2mortal ((SV *)newAV ()); |
| 566 |
|
| 567 |
if (expect_false (*cur == 0x80)) |
| 568 |
{ |
| 569 |
// indefinite length |
| 570 |
++cur; |
| 571 |
|
| 572 |
for (;;) |
| 573 |
{ |
| 574 |
want (2); |
| 575 |
if (!cur [0] && !cur [1]) |
| 576 |
{ |
| 577 |
cur += 2; |
| 578 |
break; |
| 579 |
} |
| 580 |
|
| 581 |
av_push (av, decode_ber ()); |
| 582 |
} |
| 583 |
} |
| 584 |
else |
| 585 |
{ |
| 586 |
UV len = get_length (); |
| 587 |
UV seqend = (cur - buf) + len; |
| 588 |
|
| 589 |
while (cur < buf + seqend) |
| 590 |
av_push (av, decode_ber ()); |
| 591 |
|
| 592 |
if (expect_false (cur > buf + seqend)) |
| 593 |
croak ("CONSTRUCTED type %02x length overflow (0x%x 0x%x)\n", identifier, (int)(cur - buf), (int)seqend); |
| 594 |
} |
| 595 |
|
| 596 |
res = newRV_inc ((SV *)av); |
| 597 |
} |
| 598 |
else |
| 599 |
{ |
| 600 |
UV len = get_length (); |
| 601 |
|
| 602 |
switch (profile_lookup (cur_profile, klass, tag)) |
| 603 |
{ |
| 604 |
case BER_TYPE_NULL: |
| 605 |
if (expect_false (len)) |
| 606 |
croak ("BER_TYPE_NULL value with non-zero length %d encountered (X.690 8.8.2)", len); |
| 607 |
|
| 608 |
res = &PL_sv_undef; |
| 609 |
break; |
| 610 |
|
| 611 |
case BER_TYPE_BOOL: |
| 612 |
if (expect_false (len != 1)) |
| 613 |
croak ("BER_TYPE_BOOLEAN value with invalid length %d encountered (X.690 8.2.1)", len); |
| 614 |
|
| 615 |
res = newSVcacheint (!!get_u8 ()); |
| 616 |
break; |
| 617 |
|
| 618 |
case BER_TYPE_OID: |
| 619 |
res = decode_oid (len, 0); |
| 620 |
break; |
| 621 |
|
| 622 |
case BER_TYPE_RELOID: |
| 623 |
res = decode_oid (len, 1); |
| 624 |
break; |
| 625 |
|
| 626 |
case BER_TYPE_INT: |
| 627 |
res = decode_int (len); |
| 628 |
break; |
| 629 |
|
| 630 |
case BER_TYPE_UTF8: |
| 631 |
res = decode_data (len); |
| 632 |
SvUTF8_on (res); |
| 633 |
break; |
| 634 |
|
| 635 |
case BER_TYPE_BYTES: |
| 636 |
res = decode_data (len); |
| 637 |
break; |
| 638 |
|
| 639 |
case BER_TYPE_IPADDRESS: |
| 640 |
{ |
| 641 |
if (len != 4) |
| 642 |
croak ("BER_TYPE_IPADDRESS type with invalid length %d encountered (RFC 2578 7.1.5)", len); |
| 643 |
|
| 644 |
U8 *data = get_n (4); |
| 645 |
res = newSVpvf ("%d.%d.%d.%d", data [0], data [1], data [2], data [3]); |
| 646 |
} |
| 647 |
break; |
| 648 |
|
| 649 |
case BER_TYPE_UCS2: |
| 650 |
res = decode_ucs (len, 2); |
| 651 |
break; |
| 652 |
|
| 653 |
case BER_TYPE_UCS4: |
| 654 |
res = decode_ucs (len, 4); |
| 655 |
break; |
| 656 |
|
| 657 |
case BER_TYPE_REAL: |
| 658 |
res = decode_real (len); |
| 659 |
break; |
| 660 |
|
| 661 |
case BER_TYPE_CROAK: |
| 662 |
croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag); |
| 663 |
|
| 664 |
default: |
| 665 |
croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
| 666 |
} |
| 667 |
} |
| 668 |
|
| 669 |
AV *av = newAV (); |
| 670 |
av_fill (av, BER_ARRAYSIZE - 1); |
| 671 |
AvARRAY (av)[BER_CLASS] = newSVcacheint (klass); |
| 672 |
AvARRAY (av)[BER_TAG ] = newSVcacheint (tag); |
| 673 |
AvARRAY (av)[BER_FLAGS] = newSVcacheint (constructed ? 1 : 0); |
| 674 |
AvARRAY (av)[BER_DATA ] = res; |
| 675 |
|
| 676 |
return newRV_noinc ((SV *)av); |
| 677 |
} |
| 678 |
|
| 679 |
///////////////////////////////////////////////////////////////////////////// |
| 680 |
// encoder |
| 681 |
|
| 682 |
/* adds two STRLENs together, slow, and with paranoia */ |
| 683 |
static STRLEN |
| 684 |
strlen_sum (STRLEN l1, STRLEN l2) |
| 685 |
{ |
| 686 |
size_t sum = l1 + l2; |
| 687 |
|
| 688 |
if (sum < (size_t)l2 || sum != (size_t)(STRLEN)sum) |
| 689 |
croak ("Convert::BER::XS: string size overflow"); |
| 690 |
|
| 691 |
return sum; |
| 692 |
} |
| 693 |
|
| 694 |
static void |
| 695 |
set_buf (SV *sv) |
| 696 |
{ |
| 697 |
STRLEN len; |
| 698 |
buf_sv = sv; |
| 699 |
buf = (U8 *)SvPVbyte (buf_sv, len); |
| 700 |
cur = buf; |
| 701 |
end = buf + len; |
| 702 |
} |
| 703 |
|
| 704 |
/* similar to SvGROW, but somewhat safer and guarantees exponential realloc strategy */ |
| 705 |
static char * |
| 706 |
my_sv_grow (SV *sv, size_t len1, size_t len2) |
| 707 |
{ |
| 708 |
len1 = strlen_sum (len1, len2); |
| 709 |
len1 = strlen_sum (len1, len1 >> 1); |
| 710 |
|
| 711 |
if (len1 > 4096 - 24) |
| 712 |
len1 = (len1 | 4095) - 24; |
| 713 |
|
| 714 |
return SvGROW (sv, len1); |
| 715 |
} |
| 716 |
|
| 717 |
static void |
| 718 |
need (STRLEN len) |
| 719 |
{ |
| 720 |
if (expect_false ((uintptr_t)(end - cur) < len)) |
| 721 |
{ |
| 722 |
STRLEN pos = cur - buf; |
| 723 |
buf = (U8 *)my_sv_grow (buf_sv, pos, len); |
| 724 |
cur = buf + pos; |
| 725 |
end = buf + SvLEN (buf_sv) - 1; |
| 726 |
} |
| 727 |
} |
| 728 |
|
| 729 |
static void |
| 730 |
put_u8 (int val) |
| 731 |
{ |
| 732 |
need (1); |
| 733 |
*cur++ = val; |
| 734 |
} |
| 735 |
|
| 736 |
static void |
| 737 |
put_w_nocheck (UV val) |
| 738 |
{ |
| 739 |
#if UVSIZE > 4 |
| 740 |
*cur = (val >> 7 * 9) | 0x80; cur += val >= ((UV)1 << (7 * 9)); |
| 741 |
*cur = (val >> 7 * 8) | 0x80; cur += val >= ((UV)1 << (7 * 8)); |
| 742 |
*cur = (val >> 7 * 7) | 0x80; cur += val >= ((UV)1 << (7 * 7)); |
| 743 |
*cur = (val >> 7 * 6) | 0x80; cur += val >= ((UV)1 << (7 * 6)); |
| 744 |
*cur = (val >> 7 * 5) | 0x80; cur += val >= ((UV)1 << (7 * 5)); |
| 745 |
#endif |
| 746 |
*cur = (val >> 7 * 4) | 0x80; cur += val >= ((UV)1 << (7 * 4)); |
| 747 |
*cur = (val >> 7 * 3) | 0x80; cur += val >= ((UV)1 << (7 * 3)); |
| 748 |
*cur = (val >> 7 * 2) | 0x80; cur += val >= ((UV)1 << (7 * 2)); |
| 749 |
*cur = (val >> 7 * 1) | 0x80; cur += val >= ((UV)1 << (7 * 1)); |
| 750 |
*cur = val & 0x7f; cur += 1; |
| 751 |
} |
| 752 |
|
| 753 |
static void |
| 754 |
put_w (UV val) |
| 755 |
{ |
| 756 |
need (5); // we only handle up to 5 bytes |
| 757 |
|
| 758 |
put_w_nocheck (val); |
| 759 |
} |
| 760 |
|
| 761 |
static U8 * |
| 762 |
put_length_at (UV val, U8 *cur) |
| 763 |
{ |
| 764 |
if (val <= 0x7fU) |
| 765 |
*cur++ = val; |
| 766 |
else |
| 767 |
{ |
| 768 |
U8 *lenb = cur++; |
| 769 |
|
| 770 |
#if UVSIZE > 4 |
| 771 |
*cur = val >> 56; cur += val >= ((UV)1 << (8 * 7)); |
| 772 |
*cur = val >> 48; cur += val >= ((UV)1 << (8 * 6)); |
| 773 |
*cur = val >> 40; cur += val >= ((UV)1 << (8 * 5)); |
| 774 |
*cur = val >> 32; cur += val >= ((UV)1 << (8 * 4)); |
| 775 |
#endif |
| 776 |
*cur = val >> 24; cur += val >= ((UV)1 << (8 * 3)); |
| 777 |
*cur = val >> 16; cur += val >= ((UV)1 << (8 * 2)); |
| 778 |
*cur = val >> 8; cur += val >= ((UV)1 << (8 * 1)); |
| 779 |
*cur = val ; cur += 1; |
| 780 |
|
| 781 |
*lenb = 0x80 + cur - lenb - 1; |
| 782 |
} |
| 783 |
|
| 784 |
return cur; |
| 785 |
} |
| 786 |
|
| 787 |
static void |
| 788 |
put_length (UV val) |
| 789 |
{ |
| 790 |
need (9 + val); |
| 791 |
cur = put_length_at (val, cur); |
| 792 |
} |
| 793 |
|
| 794 |
// return how many bytes the encoded length requires |
| 795 |
static int length_length (UV val) |
| 796 |
{ |
| 797 |
// use hashing with a DeBruin sequence, anyone? |
| 798 |
return expect_true (val <= 0x7fU) |
| 799 |
? 1 |
| 800 |
: 2 |
| 801 |
+ (val > 0x000000000000ffU) |
| 802 |
+ (val > 0x0000000000ffffU) |
| 803 |
+ (val > 0x00000000ffffffU) |
| 804 |
#if UVSIZE > 4 |
| 805 |
+ (val > 0x000000ffffffffU) |
| 806 |
+ (val > 0x0000ffffffffffU) |
| 807 |
+ (val > 0x00ffffffffffffU) |
| 808 |
+ (val > 0xffffffffffffffU) |
| 809 |
#endif |
| 810 |
; |
| 811 |
} |
| 812 |
|
| 813 |
static void |
| 814 |
encode_data (const char *ptr, STRLEN len) |
| 815 |
{ |
| 816 |
put_length (len); |
| 817 |
memcpy (cur, ptr, len); |
| 818 |
cur += len; |
| 819 |
} |
| 820 |
|
| 821 |
static void |
| 822 |
encode_uv (UV uv) |
| 823 |
{ |
| 824 |
} |
| 825 |
|
| 826 |
static void |
| 827 |
encode_int (SV *sv) |
| 828 |
{ |
| 829 |
need (8 + 1 + 1); // 64 bit + length + extra 0 |
| 830 |
|
| 831 |
if (expect_false (!SvIOK (sv))) |
| 832 |
sv_2iv_flags (sv, 0); |
| 833 |
|
| 834 |
U8 *lenb = cur++; |
| 835 |
|
| 836 |
if (SvIOK_notUV (sv)) |
| 837 |
{ |
| 838 |
IV iv = SvIVX (sv); |
| 839 |
|
| 840 |
if (expect_false (iv < 0)) |
| 841 |
{ |
| 842 |
// get two's complement bit pattern - works even on hypothetical non-2c machines |
| 843 |
UV uv = iv; |
| 844 |
|
| 845 |
#if UVSIZE > 4 |
| 846 |
*cur = uv >> 56; cur += !!(~uv & 0xff80000000000000U); |
| 847 |
*cur = uv >> 48; cur += !!(~uv & 0xffff800000000000U); |
| 848 |
*cur = uv >> 40; cur += !!(~uv & 0xffffff8000000000U); |
| 849 |
*cur = uv >> 32; cur += !!(~uv & 0xffffffff80000000U); |
| 850 |
#endif |
| 851 |
*cur = uv >> 24; cur += !!(~uv & 0xffffffffff800000U); |
| 852 |
*cur = uv >> 16; cur += !!(~uv & 0xffffffffffff8000U); |
| 853 |
*cur = uv >> 8; cur += !!(~uv & 0xffffffffffffff80U); |
| 854 |
*cur = uv ; cur += 1; |
| 855 |
|
| 856 |
*lenb = cur - lenb - 1; |
| 857 |
|
| 858 |
return; |
| 859 |
} |
| 860 |
} |
| 861 |
|
| 862 |
UV uv = SvUV (sv); |
| 863 |
|
| 864 |
// prepend an extra 0 if the high bit is 1 |
| 865 |
*cur = 0; cur += !!(uv & ((UV)1 << (UVSIZE * 8 - 1))); |
| 866 |
|
| 867 |
#if UVSIZE > 4 |
| 868 |
*cur = uv >> 56; cur += !!(uv & 0xff80000000000000U); |
| 869 |
*cur = uv >> 48; cur += !!(uv & 0xffff800000000000U); |
| 870 |
*cur = uv >> 40; cur += !!(uv & 0xffffff8000000000U); |
| 871 |
*cur = uv >> 32; cur += !!(uv & 0xffffffff80000000U); |
| 872 |
#endif |
| 873 |
*cur = uv >> 24; cur += !!(uv & 0xffffffffff800000U); |
| 874 |
*cur = uv >> 16; cur += !!(uv & 0xffffffffffff8000U); |
| 875 |
*cur = uv >> 8; cur += !!(uv & 0xffffffffffffff80U); |
| 876 |
*cur = uv ; cur += 1; |
| 877 |
|
| 878 |
*lenb = cur - lenb - 1; |
| 879 |
} |
| 880 |
|
| 881 |
// we don't know the length yet, so we optimistically |
| 882 |
// assume the length will need one octet later. If that |
| 883 |
// turns out to be wrong, we memmove as needed. |
| 884 |
// mark the beginning |
| 885 |
static STRLEN |
| 886 |
len_fixup_mark (void) |
| 887 |
{ |
| 888 |
return cur++ - buf; |
| 889 |
} |
| 890 |
|
| 891 |
// patch up the length |
| 892 |
static void |
| 893 |
len_fixup (STRLEN mark) |
| 894 |
{ |
| 895 |
STRLEN reallen = (cur - buf) - mark - 1; |
| 896 |
int lenlen = length_length (reallen); |
| 897 |
|
| 898 |
if (expect_false (lenlen > 1)) |
| 899 |
{ |
| 900 |
// bad luck, we have to shift the bytes to make room for the length |
| 901 |
need (5); |
| 902 |
memmove (buf + mark + lenlen, buf + mark + 1, reallen); |
| 903 |
cur += lenlen - 1; |
| 904 |
} |
| 905 |
|
| 906 |
put_length_at (reallen, buf + mark); |
| 907 |
} |
| 908 |
|
| 909 |
static char * |
| 910 |
read_uv (char *str, UV *uv) |
| 911 |
{ |
| 912 |
UV r = 0; |
| 913 |
|
| 914 |
while (*str >= '0') |
| 915 |
r = r * 10 + *str++ - '0'; |
| 916 |
|
| 917 |
*uv = r; |
| 918 |
|
| 919 |
str += !!*str; // advance over any non-zero byte |
| 920 |
|
| 921 |
return str; |
| 922 |
} |
| 923 |
|
| 924 |
static void |
| 925 |
encode_oid (SV *oid, int relative) |
| 926 |
{ |
| 927 |
STRLEN len; |
| 928 |
char *ptr = SvPV (oid, len); // utf8 vs. bytes does not matter |
| 929 |
|
| 930 |
// we need at most as many octets as the string form |
| 931 |
need (len + 1); |
| 932 |
STRLEN mark = len_fixup_mark (); |
| 933 |
|
| 934 |
UV w1, w2; |
| 935 |
|
| 936 |
if (!relative) |
| 937 |
{ |
| 938 |
ptr = read_uv (ptr, &w1); |
| 939 |
ptr = read_uv (ptr, &w2); |
| 940 |
|
| 941 |
put_w_nocheck (w1 * 40 + w2); |
| 942 |
} |
| 943 |
|
| 944 |
while (*ptr) |
| 945 |
{ |
| 946 |
ptr = read_uv (ptr, &w1); |
| 947 |
put_w_nocheck (w1); |
| 948 |
} |
| 949 |
|
| 950 |
len_fixup (mark); |
| 951 |
} |
| 952 |
|
| 953 |
static void |
| 954 |
encode_real (SV *data) |
| 955 |
{ |
| 956 |
NV nv = SvNV (data); |
| 957 |
|
| 958 |
if (expect_false (nv == (NV)0.)) |
| 959 |
{ |
| 960 |
if (signbit (nv)) |
| 961 |
{ |
| 962 |
// negative zero |
| 963 |
need (3); |
| 964 |
*cur++ = 2; |
| 965 |
*cur++ = 0x40; |
| 966 |
*cur++ = 0x43; |
| 967 |
} |
| 968 |
else |
| 969 |
{ |
| 970 |
// positive zero |
| 971 |
need (1); |
| 972 |
*cur++ = 0; |
| 973 |
} |
| 974 |
} |
| 975 |
else if (expect_false (Perl_isinf (nv))) |
| 976 |
{ |
| 977 |
need (3); |
| 978 |
*cur++ = 2; |
| 979 |
*cur++ = 0x40; |
| 980 |
*cur++ = nv < (NV)0. ? 0x41 : 0x40; |
| 981 |
} |
| 982 |
else if (expect_false (Perl_isnan (nv))) |
| 983 |
{ |
| 984 |
need (3); |
| 985 |
*cur++ = 2; |
| 986 |
*cur++ = 0x40; |
| 987 |
*cur++ = 0x42; |
| 988 |
} |
| 989 |
else |
| 990 |
{ |
| 991 |
// use decimal encoding |
| 992 |
dSP; |
| 993 |
SAVETMPS; |
| 994 |
PUSHMARK (SP); |
| 995 |
EXTEND (SP, 2); |
| 996 |
PUSHs (data); |
| 997 |
PUSHs (sv_2mortal (newSVcacheint (NV_DIG))); |
| 998 |
PUTBACK; |
| 999 |
call_pv ("Convert::BER::XS::_encode_real_decimal", G_SCALAR); |
| 1000 |
SPAGAIN; |
| 1001 |
|
| 1002 |
SV *sv = POPs; |
| 1003 |
STRLEN l; |
| 1004 |
char *f = SvPV (sv, l); |
| 1005 |
|
| 1006 |
put_length (l); |
| 1007 |
memcpy (cur, f, l); |
| 1008 |
cur += l; |
| 1009 |
|
| 1010 |
PUTBACK; |
| 1011 |
FREETMPS; |
| 1012 |
} |
| 1013 |
} |
| 1014 |
|
| 1015 |
static void |
| 1016 |
encode_ucs (SV *data, int chrsize) |
| 1017 |
{ |
| 1018 |
STRLEN uchars = sv_len_utf8 (data); |
| 1019 |
STRLEN len;; |
| 1020 |
char *ptr = SvPVutf8 (data, len); |
| 1021 |
|
| 1022 |
put_length (uchars * chrsize); |
| 1023 |
|
| 1024 |
while (uchars--) |
| 1025 |
{ |
| 1026 |
STRLEN uclen; |
| 1027 |
UV uchr = utf8_to_uvchr_buf ((U8 *)ptr, (U8 *)ptr + len, &uclen); |
| 1028 |
|
| 1029 |
ptr += uclen; |
| 1030 |
len -= uclen; |
| 1031 |
|
| 1032 |
if (chrsize == 4) |
| 1033 |
{ |
| 1034 |
*cur++ = uchr >> 24; |
| 1035 |
*cur++ = uchr >> 16; |
| 1036 |
} |
| 1037 |
|
| 1038 |
*cur++ = uchr >> 8; |
| 1039 |
*cur++ = uchr; |
| 1040 |
} |
| 1041 |
} |
| 1042 |
|
| 1043 |
// check whether an SV is a BER tuple and returns its AV * |
| 1044 |
static AV * |
| 1045 |
ber_tuple (SV *tuple) |
| 1046 |
{ |
| 1047 |
SV *rv; |
| 1048 |
|
| 1049 |
if (expect_false (!SvROK (tuple) || SvTYPE ((rv = SvRV (tuple))) != SVt_PVAV)) |
| 1050 |
croak ("BER tuple must be array-reference"); |
| 1051 |
|
| 1052 |
if (expect_false (SvRMAGICAL (rv))) |
| 1053 |
croak ("BER tuple must not be tied"); |
| 1054 |
|
| 1055 |
if (expect_false (AvFILL ((AV *)rv) != BER_ARRAYSIZE - 1)) |
| 1056 |
croak ("BER tuple must contain exactly %d elements, not %d", BER_ARRAYSIZE, AvFILL ((AV *)rv) + 1); |
| 1057 |
|
| 1058 |
return (AV *)rv; |
| 1059 |
} |
| 1060 |
|
| 1061 |
static void |
| 1062 |
encode_ber (SV *tuple) |
| 1063 |
{ |
| 1064 |
AV *av = ber_tuple (tuple); |
| 1065 |
|
| 1066 |
int klass = SvIV (AvARRAY (av)[BER_CLASS]); |
| 1067 |
int tag = SvIV (AvARRAY (av)[BER_TAG]); |
| 1068 |
int constructed = SvIV (AvARRAY (av)[BER_FLAGS]) & 1 ? ASN_CONSTRUCTED : 0; |
| 1069 |
SV *data = AvARRAY (av)[BER_DATA]; |
| 1070 |
|
| 1071 |
int identifier = (klass << ASN_CLASS_SHIFT) | constructed; |
| 1072 |
|
| 1073 |
if (expect_false (tag >= ASN_TAG_BER)) |
| 1074 |
{ |
| 1075 |
put_u8 (identifier | ASN_TAG_BER); |
| 1076 |
put_w (tag); |
| 1077 |
} |
| 1078 |
else |
| 1079 |
put_u8 (identifier | tag); |
| 1080 |
|
| 1081 |
if (constructed) |
| 1082 |
{ |
| 1083 |
// we optimistically assume that only one length byte is needed |
| 1084 |
// and adjust later |
| 1085 |
need (1); |
| 1086 |
STRLEN mark = len_fixup_mark (); |
| 1087 |
|
| 1088 |
if (expect_false (!SvROK (data) || SvTYPE (SvRV (data)) != SVt_PVAV)) |
| 1089 |
croak ("BER CONSTRUCTED data must be array-reference"); |
| 1090 |
|
| 1091 |
AV *av = (AV *)SvRV (data); |
| 1092 |
int fill = AvFILL (av); |
| 1093 |
|
| 1094 |
if (expect_false (SvRMAGICAL (av))) |
| 1095 |
croak ("BER CONSTRUCTED data must not be tied"); |
| 1096 |
|
| 1097 |
int i; |
| 1098 |
for (i = 0; i <= fill; ++i) |
| 1099 |
encode_ber (AvARRAY (av)[i]); |
| 1100 |
|
| 1101 |
len_fixup (mark); |
| 1102 |
} |
| 1103 |
else |
| 1104 |
switch (profile_lookup (cur_profile, klass, tag)) |
| 1105 |
{ |
| 1106 |
case BER_TYPE_NULL: |
| 1107 |
put_length (0); |
| 1108 |
break; |
| 1109 |
|
| 1110 |
case BER_TYPE_BOOL: |
| 1111 |
put_length (1); |
| 1112 |
*cur++ = SvTRUE (data) ? 0xff : 0x00; // 0xff = DER/CER |
| 1113 |
break; |
| 1114 |
|
| 1115 |
case BER_TYPE_OID: |
| 1116 |
encode_oid (data, 0); |
| 1117 |
break; |
| 1118 |
|
| 1119 |
case BER_TYPE_RELOID: |
| 1120 |
encode_oid (data, 1); |
| 1121 |
break; |
| 1122 |
|
| 1123 |
case BER_TYPE_INT: |
| 1124 |
encode_int (data); |
| 1125 |
break; |
| 1126 |
|
| 1127 |
case BER_TYPE_BYTES: |
| 1128 |
{ |
| 1129 |
STRLEN len; |
| 1130 |
const char *ptr = SvPVbyte (data, len); |
| 1131 |
encode_data (ptr, len); |
| 1132 |
} |
| 1133 |
break; |
| 1134 |
|
| 1135 |
case BER_TYPE_UTF8: |
| 1136 |
{ |
| 1137 |
STRLEN len; |
| 1138 |
const char *ptr = SvPVutf8 (data, len); |
| 1139 |
encode_data (ptr, len); |
| 1140 |
} |
| 1141 |
break; |
| 1142 |
|
| 1143 |
case BER_TYPE_IPADDRESS: |
| 1144 |
{ |
| 1145 |
U8 ip[4]; |
| 1146 |
sscanf (SvPV_nolen (data), "%hhu.%hhu.%hhu.%hhu", ip + 0, ip + 1, ip + 2, ip + 3); |
| 1147 |
encode_data ((const char *)ip, sizeof (ip)); |
| 1148 |
} |
| 1149 |
break; |
| 1150 |
|
| 1151 |
case BER_TYPE_UCS2: |
| 1152 |
encode_ucs (data, 2); |
| 1153 |
break; |
| 1154 |
|
| 1155 |
case BER_TYPE_UCS4: |
| 1156 |
encode_ucs (data, 4); |
| 1157 |
break; |
| 1158 |
|
| 1159 |
case BER_TYPE_REAL: |
| 1160 |
encode_real (data); |
| 1161 |
break; |
| 1162 |
|
| 1163 |
case BER_TYPE_CROAK: |
| 1164 |
croak ("class/tag %d/%d mapped to BER_TYPE_CROAK", klass, tag); |
| 1165 |
|
| 1166 |
default: |
| 1167 |
croak ("unconfigured/unsupported class/tag %d/%d", klass, tag); |
| 1168 |
} |
| 1169 |
|
| 1170 |
} |
| 1171 |
|
| 1172 |
///////////////////////////////////////////////////////////////////////////// |
| 1173 |
|
| 1174 |
MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS |
| 1175 |
|
| 1176 |
PROTOTYPES: ENABLE |
| 1177 |
|
| 1178 |
BOOT: |
| 1179 |
{ |
| 1180 |
HV *stash = gv_stashpv ("Convert::BER::XS", 1); |
| 1181 |
|
| 1182 |
profile_stash = gv_stashpv ("Convert::BER::XS::Profile", 1); |
| 1183 |
|
| 1184 |
static const struct { |
| 1185 |
const char *name; |
| 1186 |
IV iv; |
| 1187 |
} *civ, const_iv[] = { |
| 1188 |
#define const_iv(name) { # name, name }, |
| 1189 |
const_iv (ASN_BOOLEAN) |
| 1190 |
const_iv (ASN_INTEGER) |
| 1191 |
const_iv (ASN_BIT_STRING) |
| 1192 |
const_iv (ASN_OCTET_STRING) |
| 1193 |
const_iv (ASN_NULL) |
| 1194 |
const_iv (ASN_OBJECT_IDENTIFIER) |
| 1195 |
const_iv (ASN_OBJECT_DESCRIPTOR) |
| 1196 |
const_iv (ASN_OID) |
| 1197 |
const_iv (ASN_EXTERNAL) |
| 1198 |
const_iv (ASN_REAL) |
| 1199 |
const_iv (ASN_SEQUENCE) |
| 1200 |
const_iv (ASN_ENUMERATED) |
| 1201 |
const_iv (ASN_EMBEDDED_PDV) |
| 1202 |
const_iv (ASN_UTF8_STRING) |
| 1203 |
const_iv (ASN_RELATIVE_OID) |
| 1204 |
const_iv (ASN_SET) |
| 1205 |
const_iv (ASN_NUMERIC_STRING) |
| 1206 |
const_iv (ASN_PRINTABLE_STRING) |
| 1207 |
const_iv (ASN_TELETEX_STRING) |
| 1208 |
const_iv (ASN_T61_STRING) |
| 1209 |
const_iv (ASN_VIDEOTEX_STRING) |
| 1210 |
const_iv (ASN_IA5_STRING) |
| 1211 |
const_iv (ASN_ASCII_STRING) |
| 1212 |
const_iv (ASN_UTC_TIME) |
| 1213 |
const_iv (ASN_GENERALIZED_TIME) |
| 1214 |
const_iv (ASN_GRAPHIC_STRING) |
| 1215 |
const_iv (ASN_VISIBLE_STRING) |
| 1216 |
const_iv (ASN_ISO646_STRING) |
| 1217 |
const_iv (ASN_GENERAL_STRING) |
| 1218 |
const_iv (ASN_UNIVERSAL_STRING) |
| 1219 |
const_iv (ASN_CHARACTER_STRING) |
| 1220 |
const_iv (ASN_BMP_STRING) |
| 1221 |
|
| 1222 |
const_iv (ASN_UNIVERSAL) |
| 1223 |
const_iv (ASN_APPLICATION) |
| 1224 |
const_iv (ASN_CONTEXT) |
| 1225 |
const_iv (ASN_PRIVATE) |
| 1226 |
|
| 1227 |
const_iv (BER_CLASS) |
| 1228 |
const_iv (BER_TAG) |
| 1229 |
const_iv (BER_FLAGS) |
| 1230 |
const_iv (BER_DATA) |
| 1231 |
|
| 1232 |
const_iv (BER_TYPE_BYTES) |
| 1233 |
const_iv (BER_TYPE_UTF8) |
| 1234 |
const_iv (BER_TYPE_UCS2) |
| 1235 |
const_iv (BER_TYPE_UCS4) |
| 1236 |
const_iv (BER_TYPE_INT) |
| 1237 |
const_iv (BER_TYPE_OID) |
| 1238 |
const_iv (BER_TYPE_RELOID) |
| 1239 |
const_iv (BER_TYPE_NULL) |
| 1240 |
const_iv (BER_TYPE_BOOL) |
| 1241 |
const_iv (BER_TYPE_REAL) |
| 1242 |
const_iv (BER_TYPE_IPADDRESS) |
| 1243 |
const_iv (BER_TYPE_CROAK) |
| 1244 |
|
| 1245 |
const_iv (SNMP_IPADDRESS) |
| 1246 |
const_iv (SNMP_COUNTER32) |
| 1247 |
const_iv (SNMP_GAUGE32) |
| 1248 |
const_iv (SNMP_UNSIGNED32) |
| 1249 |
const_iv (SNMP_TIMETICKS) |
| 1250 |
const_iv (SNMP_OPAQUE) |
| 1251 |
const_iv (SNMP_COUNTER64) |
| 1252 |
}; |
| 1253 |
|
| 1254 |
for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) |
| 1255 |
newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); |
| 1256 |
} |
| 1257 |
|
| 1258 |
void |
| 1259 |
ber_decode (SV *ber, SV *profile = &PL_sv_undef) |
| 1260 |
ALIAS: |
| 1261 |
ber_decode_prefix = 1 |
| 1262 |
PPCODE: |
| 1263 |
{ |
| 1264 |
cur_profile = SvPROFILE (profile); |
| 1265 |
STRLEN len; |
| 1266 |
buf = (U8 *)SvPVbyte (ber, len); |
| 1267 |
cur = buf; |
| 1268 |
end = buf + len; |
| 1269 |
|
| 1270 |
PUTBACK; |
| 1271 |
SV *tuple = decode_ber (); |
| 1272 |
SPAGAIN; |
| 1273 |
|
| 1274 |
EXTEND (SP, 2); |
| 1275 |
PUSHs (sv_2mortal (tuple)); |
| 1276 |
|
| 1277 |
if (ix) |
| 1278 |
PUSHs (sv_2mortal (newSViv (cur - buf))); |
| 1279 |
else if (cur != end) |
| 1280 |
error ("trailing garbage after BER value"); |
| 1281 |
} |
| 1282 |
|
| 1283 |
void |
| 1284 |
ber_is (SV *tuple, SV *klass = &PL_sv_undef, SV *tag = &PL_sv_undef, SV *flags = &PL_sv_undef, SV *data = &PL_sv_undef) |
| 1285 |
PPCODE: |
| 1286 |
{ |
| 1287 |
if (!SvOK (tuple)) |
| 1288 |
XSRETURN_NO; |
| 1289 |
|
| 1290 |
if (!SvROK (tuple) || SvTYPE (SvRV (tuple)) != SVt_PVAV) |
| 1291 |
croak ("ber_is: tuple must be BER tuple (array-ref)"); |
| 1292 |
|
| 1293 |
AV *av = (AV *)SvRV (tuple); |
| 1294 |
|
| 1295 |
XPUSHs ( |
| 1296 |
(!SvOK (klass) || SvIV (AvARRAY (av)[BER_CLASS]) == SvIV (klass)) |
| 1297 |
&& (!SvOK (tag) || SvIV (AvARRAY (av)[BER_TAG ]) == SvIV (tag)) |
| 1298 |
&& (!SvOK (flags) || !SvIV (AvARRAY (av)[BER_FLAGS]) == !SvIV (flags)) |
| 1299 |
&& (!SvOK (data) || sv_eq (AvARRAY (av)[BER_DATA ], data)) |
| 1300 |
? &PL_sv_yes : &PL_sv_undef); |
| 1301 |
} |
| 1302 |
|
| 1303 |
void |
| 1304 |
ber_is_seq (SV *tuple) |
| 1305 |
PPCODE: |
| 1306 |
{ |
| 1307 |
if (!SvOK (tuple)) |
| 1308 |
XSRETURN_UNDEF; |
| 1309 |
|
| 1310 |
AV *av = ber_tuple (tuple); |
| 1311 |
|
| 1312 |
XPUSHs ( |
| 1313 |
SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL |
| 1314 |
&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_SEQUENCE |
| 1315 |
&& SvIV (AvARRAY (av)[BER_FLAGS]) |
| 1316 |
? AvARRAY (av)[BER_DATA] : &PL_sv_undef); |
| 1317 |
} |
| 1318 |
|
| 1319 |
void |
| 1320 |
ber_is_int (SV *tuple, SV *value = &PL_sv_undef) |
| 1321 |
PPCODE: |
| 1322 |
{ |
| 1323 |
if (!SvOK (tuple)) |
| 1324 |
XSRETURN_NO; |
| 1325 |
|
| 1326 |
AV *av = ber_tuple (tuple); |
| 1327 |
|
| 1328 |
UV data = SvUV (AvARRAY (av)[BER_DATA]); |
| 1329 |
|
| 1330 |
XPUSHs ( |
| 1331 |
SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL |
| 1332 |
&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_INTEGER |
| 1333 |
&& !SvIV (AvARRAY (av)[BER_FLAGS]) |
| 1334 |
&& (!SvOK (value) || data == SvUV (value)) |
| 1335 |
? sv_2mortal (data ? newSVsv (AvARRAY (av)[BER_DATA]) : newSVpv ("0 but true", 0)) |
| 1336 |
: &PL_sv_undef); |
| 1337 |
} |
| 1338 |
|
| 1339 |
void |
| 1340 |
ber_is_oid (SV *tuple, SV *oid = &PL_sv_undef) |
| 1341 |
PPCODE: |
| 1342 |
{ |
| 1343 |
if (!SvOK (tuple)) |
| 1344 |
XSRETURN_NO; |
| 1345 |
|
| 1346 |
AV *av = ber_tuple (tuple); |
| 1347 |
|
| 1348 |
XPUSHs ( |
| 1349 |
SvIV (AvARRAY (av)[BER_CLASS]) == ASN_UNIVERSAL |
| 1350 |
&& SvIV (AvARRAY (av)[BER_TAG ]) == ASN_OBJECT_IDENTIFIER |
| 1351 |
&& !SvIV (AvARRAY (av)[BER_FLAGS]) |
| 1352 |
&& (!SvOK (oid) || sv_eq (AvARRAY (av)[BER_DATA], oid)) |
| 1353 |
? newSVsv (AvARRAY (av)[BER_DATA]) : &PL_sv_undef); |
| 1354 |
} |
| 1355 |
|
| 1356 |
############################################################################# |
| 1357 |
|
| 1358 |
void |
| 1359 |
ber_encode (SV *tuple, SV *profile = &PL_sv_undef) |
| 1360 |
PPCODE: |
| 1361 |
{ |
| 1362 |
cur_profile = SvPROFILE (profile); |
| 1363 |
buf_sv = sv_2mortal (NEWSV (0, 256)); |
| 1364 |
SvPOK_only (buf_sv); |
| 1365 |
set_buf (buf_sv); |
| 1366 |
|
| 1367 |
PUTBACK; |
| 1368 |
encode_ber (tuple); |
| 1369 |
SPAGAIN; |
| 1370 |
|
| 1371 |
SvCUR_set (buf_sv, cur - buf); |
| 1372 |
XPUSHs (buf_sv); |
| 1373 |
} |
| 1374 |
|
| 1375 |
SV * |
| 1376 |
ber_int (SV *sv) |
| 1377 |
CODE: |
| 1378 |
{ |
| 1379 |
AV *av = newAV (); |
| 1380 |
av_fill (av, BER_ARRAYSIZE - 1); |
| 1381 |
AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL); |
| 1382 |
AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_INTEGER); |
| 1383 |
AvARRAY (av)[BER_FLAGS] = newSVcacheint (0); |
| 1384 |
AvARRAY (av)[BER_DATA ] = newSVsv (sv); |
| 1385 |
RETVAL = newRV_noinc ((SV *)av); |
| 1386 |
} |
| 1387 |
OUTPUT: RETVAL |
| 1388 |
|
| 1389 |
# TODO: not arrayref, but elements? |
| 1390 |
SV * |
| 1391 |
ber_seq (SV *arrayref) |
| 1392 |
CODE: |
| 1393 |
{ |
| 1394 |
AV *av = newAV (); |
| 1395 |
av_fill (av, BER_ARRAYSIZE - 1); |
| 1396 |
AvARRAY (av)[BER_CLASS] = newSVcacheint (ASN_UNIVERSAL); |
| 1397 |
AvARRAY (av)[BER_TAG ] = newSVcacheint (ASN_SEQUENCE); |
| 1398 |
AvARRAY (av)[BER_FLAGS] = newSVcacheint (1); |
| 1399 |
AvARRAY (av)[BER_DATA ] = newSVsv (arrayref); |
| 1400 |
RETVAL = newRV_noinc ((SV *)av); |
| 1401 |
} |
| 1402 |
OUTPUT: RETVAL |
| 1403 |
|
| 1404 |
MODULE = Convert::BER::XS PACKAGE = Convert::BER::XS::Profile |
| 1405 |
|
| 1406 |
SV * |
| 1407 |
new (SV *klass) |
| 1408 |
CODE: |
| 1409 |
RETVAL = profile_new (); |
| 1410 |
OUTPUT: RETVAL |
| 1411 |
|
| 1412 |
void |
| 1413 |
set (SV *profile, int klass, int tag, int type) |
| 1414 |
CODE: |
| 1415 |
profile_set (SvPROFILE (profile), klass, tag, type); |
| 1416 |
|
| 1417 |
IV |
| 1418 |
get (SV *profile, int klass, int tag) |
| 1419 |
CODE: |
| 1420 |
RETVAL = profile_lookup (SvPROFILE (profile), klass, tag); |
| 1421 |
OUTPUT: RETVAL |
| 1422 |
|
| 1423 |
void |
| 1424 |
_set_default (SV *profile) |
| 1425 |
CODE: |
| 1426 |
default_profile = SvPROFILE (profile); |
| 1427 |
|
| 1428 |
|
