Adding upstream version 2.0.0+debian.upstream/2.0.0+debian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 158 insertions, 0 deletions

diff --git a/src/dnscap_common.h b/src/dnscap_common.h
new file mode 100644
index 0000000..db1b88b
--- /dev/null
+++ b/src/dnscap_common.h
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2016-2021, OARC, 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 __dnscap_dnscap_common_h
+#define __dnscap_dnscap_common_h
+
+#include <netinet/in.h>
+#include <sys/types.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
+
+/*
+ * setup MY_BPFTIMEVAL as the timeval structure that bpf packets
+ * will be assoicated with packets from libpcap
+ */
+#ifndef MY_BPFTIMEVAL
+#define MY_BPFTIMEVAL timeval
+#endif
+typedef struct MY_BPFTIMEVAL my_bpftimeval;
+
+/*
+ * Structure to contain IP addresses
+ */
+typedef struct {
+    int af;
+    union {
+        struct in_addr  a4;
+        struct in6_addr a6;
+    } u;
+} iaddr;
+
+/*
+ * Prototype for the plugin "type" function
+ *
+ * output - Will run plugin's "output" function last when outputting (default
+ *          and same behavior before the existens of a plugin type)
+ * filter - Will run plugin's "filter" function before outputting and won't
+ *          output if the return of that function is non-zero.
+ */
+enum plugin_type {
+    plugin_output,
+    plugin_filter,
+};
+typedef enum plugin_type type_t(void);
+
+/*
+ * plugins can call the logerr() function in the main dnscap
+ * process.
+ */
+typedef int logerr_t(const char* fmt, ...);
+
+/*
+ * Prototype for the plugin "output" function
+ */
+typedef void output_t(const char* descr,
+    iaddr                         from,
+    iaddr                         to,
+    uint8_t                       proto,
+    unsigned                      flags,
+    unsigned                      sport,
+    unsigned                      dport,
+    my_bpftimeval                 ts,
+    const u_char*                 pkt_copy,
+    const unsigned                olen,
+    const u_char*                 payload,
+    const unsigned                payloadlen);
+
+/*
+ * Prototype for the plugin "filter" function
+ */
+typedef int filter_t(const char* descr,
+    iaddr*                       from,
+    iaddr*                       to,
+    uint8_t                      proto,
+    unsigned                     flags,
+    unsigned                     sport,
+    unsigned                     dport,
+    my_bpftimeval                ts,
+    const u_char*                pkt_copy,
+    const unsigned               olen,
+    const u_char*                payload,
+    const unsigned               payloadlen);
+
+/*
+ * Extensions
+ */
+
+#define DNSCAP_EXT_IS_RESPONDER 1
+typedef int (*is_responder_t)(iaddr ia);
+
+#define DNSCAP_EXT_IA_STR 2
+typedef const char* (*ia_str_t)(iaddr ia);
+
+#define DNSCAP_EXT_TCPSTATE_GETCURR 3
+typedef void* (*tcpstate_getcurr_t)(void);
+
+#define DNSCAP_EXT_TCPSTATE_RESET 4
+typedef void (*tcpstate_reset_t)(void* tcpstate, const char* msg);
+
+#define DNSCAP_EXT_SET_IADDR 5
+typedef void (*set_iaddr_t)(iaddr* from, iaddr* to);
+
+/*
+ * Flags
+ */
+
+#define DNSCAP_OUTPUT_ISFRAG (1 << 0)
+#define DNSCAP_OUTPUT_ISDNS (1 << 1)
+#define DNSCAP_OUTPUT_ISLAYER (1 << 2)
+
+/*
+ * Direction
+ */
+
+#define DIR_INITIATE 0x0001
+#define DIR_RESPONSE 0x0002
+
+#endif /* __dnscap_dnscap_common_h */