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#5 Add checks on incoming queries
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parent
7207d722b4
commit
728919fc9a
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@ -284,7 +284,7 @@ dns_decode(char *buf, size_t buflen, struct query *q, qr_t qr, char *packet, siz
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readlong(packet, &data, &ttl);
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readshort(packet, &data, &rlen);
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rv = MIN(rlen, sizeof(rdata));
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readdata(packet, &data, rdata, rv);
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rv = readdata(packet, &data, rdata, rv);
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if(type == T_NULL && rv > 2) {
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rv = MIN(rv, buflen);
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@ -302,6 +302,11 @@ dns_decode(char *buf, size_t buflen, struct query *q, qr_t qr, char *packet, siz
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readshort(packet, &data, &type);
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readshort(packet, &data, &class);
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if(type != T_NULL) {
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rv = 0;
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break;
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}
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strncpy(q->name, name, 257);
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q->type = type;
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q->id = id;
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