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asn1: Add asn1_extract_blob()

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Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This commit is contained in:
Volker Lendecke 2016-01-04 21:53:23 +01:00 committed by Jeremy Allison
parent 8cfb6a3139
commit 7b7aa016df
2 changed files with 22 additions and 0 deletions
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20
lib/util/asn1.c
View File

@ -1018,6 +1018,26 @@ bool asn1_blob(const struct asn1_data *asn1, DATA_BLOB *blob)
return true;
}
bool asn1_extract_blob(struct asn1_data *asn1, TALLOC_CTX *mem_ctx,
DATA_BLOB *pblob)
{
DATA_BLOB blob;
if (!asn1_blob(asn1, &blob)) {
return false;
}
*pblob = (DATA_BLOB) { .length = blob.length };
pblob->data = talloc_move(mem_ctx, &blob.data);
/*
* Stop access from here on
*/
asn1->has_error = true;
return true;
}
/*
Fill in an asn1 struct without making a copy
*/

2
lib/util/asn1.h
View File

@ -97,6 +97,8 @@ bool asn1_read_enumerated(struct asn1_data *data, int *v);
bool asn1_check_enumerated(struct asn1_data *data, int v);
bool asn1_write_enumerated(struct asn1_data *data, uint8_t v);
bool asn1_blob(const struct asn1_data *asn1, DATA_BLOB *blob);
bool asn1_extract_blob(struct asn1_data *asn1, TALLOC_CTX *mem_ctx,
DATA_BLOB *pblob);
void asn1_load_nocopy(struct asn1_data *data, uint8_t *buf, size_t len);
int asn1_peek_full_tag(DATA_BLOB blob, uint8_t tag, size_t *packet_size);