Adding upstream version 2.15.2.

Signed-off-by: Daniel Baumann <daniel@debian.org>

1 files changed, 182 insertions, 0 deletions

diff --git a/src/dns_message.h b/src/dns_message.h
new file mode 100644
index 0000000..81daf53
--- /dev/null
+++ b/src/dns_message.h
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 2008-2024 OARC, Inc.
+ * Copyright (c) 2007-2008, Internet Systems Consortium, Inc.
+ * Copyright (c) 2003-2007, The Measurement Factory, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __dsc_dns_message_h
+#define __dsc_dns_message_h
+
+typedef struct transport_message transport_message;
+typedef struct dns_message       dns_message;
+
+#include "inX_addr.h"
+#include "dataset_opt.h"
+#include "md_array.h"
+
+#include <stdio.h>
+#ifdef TIME_WITH_SYS_TIME
+#include <sys/time.h>
+#include <time.h>
+#else
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#else
+#include <time.h>
+#endif
+#endif
+
+#define MAX_QNAME_SZ 512
+
+enum transport_encryption {
+    TRANSPORT_ENCRYPTION_UNENCRYPTED = 0,
+    TRANSPORT_ENCRYPTION_DOT         = 1,
+    TRANSPORT_ENCRYPTION_DOH         = 2,
+    TRANSPORT_ENCRYPTION_DNSCrypt    = 3,
+    TRANSPORT_ENCRYPTION_DOQ         = 4,
+};
+
+struct transport_message {
+    struct timeval            ts;
+    inX_addr                  src_ip_addr;
+    inX_addr                  dst_ip_addr;
+    unsigned short            src_port;
+    unsigned short            dst_port;
+    unsigned char             ip_version;
+    unsigned char             proto;
+    enum transport_encryption encryption;
+};
+
+struct dns_message {
+    transport_message* tm;
+    unsigned short     id;
+    unsigned short     qtype;
+    unsigned short     qclass;
+    unsigned short     msglen;
+    char               qname[MAX_QNAME_SZ];
+    const char*        tld;
+    unsigned char      opcode;
+    unsigned char      rcode;
+    unsigned int       malformed : 1;
+    unsigned int       qr : 1;
+    unsigned int       rd : 1; /* set if RECUSION DESIRED bit is set */
+    unsigned int       aa : 1; /* set if AUTHORITATIVE ANSWER bit is set */
+    unsigned int       tc : 1; /* set if TRUNCATED RESPONSE bit is set */
+    unsigned int       ad : 1; /* set if AUTHENTIC DATA bit is set */
+    struct
+    {
+        unsigned int   found : 1; /* set if we found an OPT RR */
+        unsigned int   DO : 1; /* set if DNSSEC DO bit is set */
+        unsigned char  version; /* version field from OPT RR */
+        unsigned short bufsiz; /* class field from OPT RR */
+
+        // bitmap of found EDNS(0) options
+        struct {
+            unsigned int cookie : 1;
+            unsigned int nsid : 1;
+            unsigned int ede : 1;
+            unsigned int ecs : 1;
+        } option;
+
+        // cookie rfc 7873
+        struct {
+            const u_char*  client; // pointer to 8 byte client part
+            const u_char*  server; // pointer to server part, may be null
+            unsigned short server_len; // length of server part, if any
+        } cookie;
+
+        // nsid rfc 5001
+        struct {
+            const u_char*  data; // pointer to nsid payload, may be null
+            unsigned short len; // length of nsid, if any
+        } nsid;
+
+        // extended error codes rfc 8914
+        struct {
+            unsigned short code;
+            const u_char*  text; // pointer to EXTRA-TEXT, may be null
+            unsigned short len; // length of text, if any
+        } ede;
+
+        // client subnet rfc 7871
+        struct {
+            unsigned short family;
+            unsigned char  source_prefix;
+            unsigned char  scope_prefix;
+            const u_char*  address; // pointer to address, may be null
+            unsigned short len; // length of address, if any
+        } ecs;
+    } edns;
+};
+
+void        dns_message_handle(dns_message* m);
+int         dns_message_add_array(const char* name, const char* fn, const char* fi, const char* sn, const char* si, const char* f, dataset_opt opts);
+void        dns_message_flush_arrays(void);
+void        dns_message_report(FILE* fp, md_array_printer* printer);
+void        dns_message_clear_arrays(void);
+const char* dns_message_QnameToNld(const char* qname, int nld);
+const char* dns_message_tld(dns_message* m);
+void        dns_message_filters_init(void);
+void        dns_message_indexers_init(void);
+int         add_qname_filter(const char* name, const char* pat);
+
+void indexer_want_edns(void);
+void indexer_want_edns_options(void);
+
+#include <arpa/nameser.h>
+#ifdef HAVE_ARPA_NAMESER_COMPAT_H
+#include <arpa/nameser_compat.h>
+#endif
+
+/* DNS types that may be missing */
+
+#ifndef T_AAAA
+#define T_AAAA 28
+#endif
+#ifndef T_A6
+#define T_A6 38
+#endif
+#ifndef T_OPT
+#define T_OPT 41 /* OPT pseudo-RR, RFC2761 */
+#endif
+
+/* DNS classes that may be missing */
+
+#ifndef C_CHAOS
+#define C_CHAOS 3
+#endif
+#ifndef C_NONE
+#define C_NONE 254
+#endif
+
+#endif /* __dsc_dns_message_h */