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nts: improve NTS-KE server/client code

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Add more assertions and comments, refactor initialization of the helper,
and make other changes to make the code more robust.
This commit is contained in:
Miroslav Lichvar
2020-07-13 14:25:57 +02:00
parent 51d77d6cfc
commit 66e097e3e6
11 changed files with 191 additions and 105 deletions
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4
nts_ke_session.c
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@@ -154,6 +154,7 @@ get_record(struct Message *message, int *critical, int *type, int *body_length,
blen = ntohs(header.body_length);
rlen = sizeof (header) + blen;
assert(blen >= 0 && rlen > 0);
if (message->length < message->parsed + rlen)
return 0;
@@ -802,6 +803,9 @@ NKSN_GetRecord(NKSN_Instance inst, int *critical, int *type, int *body_length,
assert(inst->message.complete);
if (body_length)
*body_length = 0;
if (!get_record(&inst->message, critical, &type2, body_length, body, buffer_length))
return 0;