(krb5_rd_safe): handle no sequence number as zero when we were
expecting a sequence number. MIT krb5 cannot generate a sequence number of zero, instead generating no sequence number git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@9483 ec53bebd-3082-4978-b11e-865c3cabbd6b
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@@ -1,5 +1,5 @@
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/*
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* Copyright (c) 1997 - 2000 Kungliga Tekniska H<>gskolan
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* Copyright (c) 1997 - 2001 Kungliga Tekniska H<>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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@@ -146,10 +146,16 @@ krb5_rd_safe(krb5_context context,
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}
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/* XXX - check replay cache */
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/* check sequence number */
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/* check sequence number. since MIT krb5 cannot generate a sequence
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number of zero but instead generates no sequence number, we accept that
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*/
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if (auth_context->flags & KRB5_AUTH_CONTEXT_DO_SEQUENCE) {
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if (safe.safe_body.seq_number == NULL ||
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*safe.safe_body.seq_number != auth_context->remote_seqnumber) {
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if ((safe.safe_body.seq_number == NULL
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&& auth_context->remote_seqnumber != 0)
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|| (safe.safe_body.seq_number != NULL
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&& *safe.safe_body.seq_number !=
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auth_context->remote_seqnumber)) {
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ret = KRB5KRB_AP_ERR_BADORDER;
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goto failure;
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}
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