Removed submodules

2026-05-31 14:34:00 -04:00
commit 46c36b11da
352 changed files with 14792 additions and 0 deletions
@@ -0,0 +1,62 @@
+#ifndef __cs361_dns_h__
+#define __cs361_dns_h__
+
+#include <stdint.h>
+
+// Maximum buffer lengths allows
+#define BUFFER_LENGTH 512
+
+// Structure of the bytes for a DNS header
+typedef struct
+{
+  uint16_t xid;
+  uint16_t flags;
+  uint16_t qdcount;
+  uint16_t ancount;
+  uint16_t nscount;
+  uint16_t arcount;
+} dns_header_t;
+
+typedef struct
+{
+  dns_header_t header;
+  unsigned char *domain;
+  uint16_t qtype;
+  uint16_t qclass;
+} dns_query_t;
+
+typedef struct
+{
+  char *domain;
+  uint16_t qtype;
+  uint16_t qclass;
+  uint32_t ttl;
+  uint16_t rdlen;
+  char *rdata;
+} dns_answer_t;
+
+typedef struct
+{
+  dns_query_t query;
+  dns_answer_t *answers;
+  dns_answer_t *authorities;
+  dns_answer_t *additionals;
+} dns_response_t;
+
+// Supported record types
+#define A 1
+#define NS 2
+#define CNAME 5
+#define SOA 6
+#define PTR 12
+#define MX 15
+#define AAAA 28
+
+void print_dns_header (dns_header_t *);
+void print_question_section (dns_query_t *query);
+void print_answer_section (dns_answer_t *answer);
+ssize_t parse_dns_query (unsigned char *bytes, dns_query_t *query);
+ssize_t parse_dns_response (unsigned char *bytes, ssize_t query_len,
+                            dns_response_t *response);
+
+#endif