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(krb5_kt_{start_seq_get,next_entry,end_seq_get}): check for NULL

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@6869 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Johan Danielsson
1999-08-25 21:10:10 +00:00
parent 77899b77db
commit 74efd057cb
1 changed files with 6 additions and 0 deletions
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6
lib/krb5/keytab.c
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@@ -305,6 +305,8 @@ krb5_kt_start_seq_get(krb5_context context,
krb5_keytab id, krb5_keytab id,
krb5_kt_cursor *cursor) krb5_kt_cursor *cursor)
{ {
if(id->start_seq_get == NULL)
return HEIM_ERR_OPNOTSUPP;
return (*id->start_seq_get)(context, id, cursor); return (*id->start_seq_get)(context, id, cursor);
} }
@@ -314,6 +316,8 @@ krb5_kt_next_entry(krb5_context context,
krb5_keytab_entry *entry, krb5_keytab_entry *entry,
krb5_kt_cursor *cursor) krb5_kt_cursor *cursor)
{ {
if(id->next_entry)
return HEIM_ERR_OPNOTSUPP;
return (*id->next_entry)(context, id, entry, cursor); return (*id->next_entry)(context, id, entry, cursor);
} }
@@ -323,6 +327,8 @@ krb5_kt_end_seq_get(krb5_context context,
krb5_keytab id, krb5_keytab id,
krb5_kt_cursor *cursor) krb5_kt_cursor *cursor)
{ {
if(id->end_seq_get)
return HEIM_ERR_OPNOTSUPP;
return (*id->end_seq_get)(context, id, cursor); return (*id->end_seq_get)(context, id, cursor);
} }