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-rw-r--r--lib/asn1_decoder.c49
1 files changed, 28 insertions, 21 deletions
diff --git a/lib/asn1_decoder.c b/lib/asn1_decoder.c
index 1ef0cec38d78..dc14beae2c9a 100644
--- a/lib/asn1_decoder.c
+++ b/lib/asn1_decoder.c
@@ -313,42 +313,47 @@ next_op:
313 313
314 /* Decide how to handle the operation */ 314 /* Decide how to handle the operation */
315 switch (op) { 315 switch (op) {
316 case ASN1_OP_MATCH_ANY_ACT:
317 case ASN1_OP_MATCH_ANY_ACT_OR_SKIP:
318 case ASN1_OP_COND_MATCH_ANY_ACT:
319 case ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP:
320 ret = actions[machine[pc + 1]](context, hdr, tag, data + dp, len);
321 if (ret < 0)
322 return ret;
323 goto skip_data;
324
325 case ASN1_OP_MATCH_ACT:
326 case ASN1_OP_MATCH_ACT_OR_SKIP:
327 case ASN1_OP_COND_MATCH_ACT_OR_SKIP:
328 ret = actions[machine[pc + 2]](context, hdr, tag, data + dp, len);
329 if (ret < 0)
330 return ret;
331 goto skip_data;
332
333 case ASN1_OP_MATCH: 316 case ASN1_OP_MATCH:
334 case ASN1_OP_MATCH_OR_SKIP: 317 case ASN1_OP_MATCH_OR_SKIP:
318 case ASN1_OP_MATCH_ACT:
319 case ASN1_OP_MATCH_ACT_OR_SKIP:
335 case ASN1_OP_MATCH_ANY: 320 case ASN1_OP_MATCH_ANY:
336 case ASN1_OP_MATCH_ANY_OR_SKIP: 321 case ASN1_OP_MATCH_ANY_OR_SKIP:
322 case ASN1_OP_MATCH_ANY_ACT:
323 case ASN1_OP_MATCH_ANY_ACT_OR_SKIP:
337 case ASN1_OP_COND_MATCH_OR_SKIP: 324 case ASN1_OP_COND_MATCH_OR_SKIP:
325 case ASN1_OP_COND_MATCH_ACT_OR_SKIP:
338 case ASN1_OP_COND_MATCH_ANY: 326 case ASN1_OP_COND_MATCH_ANY:
339 case ASN1_OP_COND_MATCH_ANY_OR_SKIP: 327 case ASN1_OP_COND_MATCH_ANY_OR_SKIP:
340 skip_data: 328 case ASN1_OP_COND_MATCH_ANY_ACT:
329 case ASN1_OP_COND_MATCH_ANY_ACT_OR_SKIP:
330
341 if (!(flags & FLAG_CONS)) { 331 if (!(flags & FLAG_CONS)) {
342 if (flags & FLAG_INDEFINITE_LENGTH) { 332 if (flags & FLAG_INDEFINITE_LENGTH) {
333 size_t tmp = dp;
334
343 ret = asn1_find_indefinite_length( 335 ret = asn1_find_indefinite_length(
344 data, datalen, &dp, &len, &errmsg); 336 data, datalen, &tmp, &len, &errmsg);
345 if (ret < 0) 337 if (ret < 0)
346 goto error; 338 goto error;
347 } else {
348 dp += len;
349 } 339 }
350 pr_debug("- LEAF: %zu\n", len); 340 pr_debug("- LEAF: %zu\n", len);
351 } 341 }
342
343 if (op & ASN1_OP_MATCH__ACT) {
344 unsigned char act;
345
346 if (op & ASN1_OP_MATCH__ANY)
347 act = machine[pc + 1];
348 else
349 act = machine[pc + 2];
350 ret = actions[act](context, hdr, tag, data + dp, len);
351 if (ret < 0)
352 return ret;
353 }
354
355 if (!(flags & FLAG_CONS))
356 dp += len;
352 pc += asn1_op_lengths[op]; 357 pc += asn1_op_lengths[op];
353 goto next_op; 358 goto next_op;
354 359
@@ -434,6 +439,8 @@ next_op:
434 else 439 else
435 act = machine[pc + 1]; 440 act = machine[pc + 1];
436 ret = actions[act](context, hdr, 0, data + tdp, len); 441 ret = actions[act](context, hdr, 0, data + tdp, len);
442 if (ret < 0)
443 return ret;
437 } 444 }
438 pc += asn1_op_lengths[op]; 445 pc += asn1_op_lengths[op];
439 goto next_op; 446 goto next_op;