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- Do not barf on empty SEQUENCEs if all elements inside are OPTIONAL 

git-svn-id: https://www.opensc-project.org/svnp/opensc/trunk@1386 c6295689-39f2-0310-b995-f0e70906c6a9
This commit is contained in:
okir 2003-08-21 05:39:51 +00:00
parent 093adc8c89
commit 3c88da0d81
1 changed files with 6 additions and 3 deletions
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9
src/libopensc/asn1.c
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@ -1035,10 +1035,13 @@ static int asn1_decode(struct sc_context *ctx, struct sc_asn1_entry *asn1,
if (ctx->debug >= 3)
debug(ctx, "called, depth %d%s\n", depth, choice ? ", choice" : "");
if (left < 2) {
if (asn1->name != NULL)
return SC_ERROR_ASN1_END_OF_CONTENTS;
else
while (asn1->name && (asn1->flags & SC_ASN1_OPTIONAL))
asn1++;
/* If all elements were optional, there's nothing
* to complain about */
if (asn1->name == NULL)
return 0;
return SC_ERROR_ASN1_END_OF_CONTENTS;
}
if (p[0] == 0 || p[0] == 0xFF)
return SC_ERROR_ASN1_END_OF_CONTENTS;