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Added debug statements.

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Don't crash when called on an uninitialised chap structure; this
allows us to avoid extra checks within iscsi.c to make sure that we
receive the CHAP_XXX keys in a sensible order.
This commit is contained in:
Michael Brown 2006-11-21 16:14:17 +00:00
parent a9415d3da2
commit d37f82509f
1 changed files with 16 additions and 1 deletions
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17
src/crypto/chap.c
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@ -51,10 +51,15 @@ int chap_init ( struct chap_challenge *chap,
assert ( chap->digest_context == NULL );
assert ( chap->response == NULL );
DBG ( "CHAP %p initialising with %s digest\n", chap, digest->name );
state_len = ( digest->context_len + digest->digest_len );
state = malloc ( state_len );
if ( ! state )
if ( ! state ) {
DBG ( "CHAP %p could not allocate %d bytes for state\n",
chap, state_len );
return -ENOMEM;
}
chap->digest = digest;
chap->digest_context = state;
@ -76,6 +81,9 @@ void chap_update ( struct chap_challenge *chap, const void *data,
assert ( chap->digest != NULL );
assert ( chap->digest_context != NULL );
if ( ! chap->digest )
return;
chap->digest->update ( chap->digest_context, data, len );
}
@ -92,6 +100,11 @@ void chap_respond ( struct chap_challenge *chap ) {
assert ( chap->digest_context != NULL );
assert ( chap->response != NULL );
DBG ( "CHAP %p responding to challenge\n", chap );
if ( ! chap->digest )
return;
chap->digest->finish ( chap->digest_context, chap->response );
}
@ -103,6 +116,8 @@ void chap_respond ( struct chap_challenge *chap ) {
void chap_finish ( struct chap_challenge *chap ) {
void *state = chap->digest_context;
DBG ( "CHAP %p finished\n", chap );
free ( state );
memset ( chap, 0, sizeof ( *chap ) );
}