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PKCS#11: Fix a crash in C_GetMechanismList if pulCount is NULL 

git-svn-id: https://www.opensc-project.org/svnp/opensc/branches/martin/0.12@3732 c6295689-39f2-0310-b995-f0e70906c6a9
This commit is contained in:
martin 2009-09-14 10:12:24 +00:00
parent a614dff522
commit 831d1a539e
1 changed files with 4 additions and 1 deletions
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5
src/pkcs11/mechanism.c
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@ -80,10 +80,13 @@ sc_pkcs11_get_mechanism_list(struct sc_pkcs11_card *p11card,
unsigned int n, count = 0;
int rv;
if (!pulCount)
return CKR_ARGUMENTS_BAD;
for (n = 0; n < p11card->nmechanisms; n++) {
if (!(mt = p11card->mechanisms[n]))
continue;
if (count < *pulCount && pList)
if (pList && count < *pulCount)
pList[count] = mt->mech;
count++;
}