Allow disabling pcap packet capture

include/tins/config.h.in

@@ -28,4 +28,7 @@
 /* Have WPA2Decrypter callbacks */
 #cmakedefine TINS_HAVE_WPA2_CALLBACKS
 
+/* Have libpcap */
+#cmakedefine TINS_HAVE_PCAP
+
 #endif // TINS_CONFIG_H

include/tins/internals.h

@@ -40,6 +40,7 @@
 #include "constants.h"
 #include "pdu.h"
 #include "hw_address.h"
+#include "macros.h"
 
 /**
  * \cond
@@ -124,8 +125,10 @@ PDU* pdu_from_flag(Constants::Ethernet::e flag, const uint8_t* buffer,
   uint32_t size, bool rawpdu_on_no_match = true);
 PDU* pdu_from_flag(Constants::IP::e flag, const uint8_t* buffer,
   uint32_t size, bool rawpdu_on_no_match = true);
+#ifdef TINS_HAVE_PCAP
 PDU* pdu_from_dlt_flag(int flag, const uint8_t* buffer,
   uint32_t size, bool rawpdu_on_no_match = true);
+#endif // TINS_HAVE_PCAP
 PDU* pdu_from_flag(PDU::PDUType type, const uint8_t* buffer, uint32_t size);
 
 Constants::Ethernet::e pdu_flag_to_ether_type(PDU::PDUType flag);

include/tins/offline_packet_filter.h

@@ -32,9 +32,12 @@
 
 #include <string>
 #include <stdint.h>
-#include "data_link_type.h"
 #include "macros.h"
 
+#ifdef TINS_HAVE_PCAP
+
+#include "data_link_type.h"
+
 namespace Tins {
 
 class PDU;
@@ -154,6 +157,9 @@ private:
     mutable bpf_program filter_;
     std::string string_filter_;
 };
+
 } // Tins
 
+#endif // TINS_HAVE_PCAP
+
 #endif // TINS_OFFLINE_PACKET_FILTER_H

include/tins/packet_writer.h

@@ -33,11 +33,13 @@
 #include "utils.h"
 #include <string>
 #include <iterator>
-#include <pcap.h>
-#include "data_link_type.h"
 #include "macros.h"
 #include "cxxstd.h"
 
+#ifdef TINS_HAVE_PCAP
+#include <pcap.h>
+#include "data_link_type.h"
+
 struct timeval;
 
 namespace Tins {
@@ -220,6 +222,9 @@ private:
     pcap_t* handle_;
     pcap_dumper_t* dumper_; 
 };
-}
+
+} // Tins
+
+#endif // TINS_HAVE_PCAP
 
 #endif // TINS_PACKET_WRITER_H

include/tins/pktap.h

@@ -33,6 +33,9 @@
 #include "pdu.h"
 #include "macros.h"
 
+// This class is only available if pcap is enabled
+#ifdef TINS_HAVE_PCAP
+
 namespace Tins {
 
 /**
@@ -111,4 +114,6 @@ private:
 
 } // Tins
 
+#endif // TINS_HAVE_PCAP
+
 #endif // TINS_PKTAP_H

include/tins/ppi.h

@@ -35,6 +35,8 @@
 #include "endianness.h"
 #include "small_uint.h"
 
+#ifdef TINS_HAVE_PCAP
+
 namespace Tins {
 
 /**
@@ -135,6 +137,9 @@ private:
     ppi_header header_;
     byte_array data_;
 };
-}
+
+} // Tins
+
+#endif // TINS_HAVE_PCAP
 
 #endif // TINS_PPI_H

include/tins/sniffer.h

@@ -31,8 +31,6 @@
 #ifndef TINS_SNIFFER_H
 #define TINS_SNIFFER_H
 
-
-#include <pcap.h>
 #include <string>
 #include <memory>
 #include <stdexcept>
@@ -44,6 +42,10 @@
 #include "exceptions.h"
 #include "internals.h"
 
+#ifdef TINS_HAVE_PCAP
+
+#include <pcap.h>
+
 namespace Tins {
 class SnifferIterator;
 class SnifferConfiguration;
@@ -645,4 +647,6 @@ void Tins::BaseSniffer::sniff_loop(Functor function, uint32_t max_packets) {
 
 } // Tins
 
+#endif // TINS_HAVE_PCAP
+
 #endif // TINS_SNIFFER_H

include/tins/tcp_stream.h

@@ -36,13 +36,16 @@
 #include <vector>
 #include <algorithm>
 #include <stdint.h>
-#include "sniffer.h"
 #include "macros.h"
 #include "tcp.h"
 #include "utils.h"
 #include "ip.h"
 #include "ip_address.h"
 
+#ifdef TINS_HAVE_PCAP
+
+#include "sniffer.h"
+
 namespace Tins {
 class Sniffer;
 class RawPDU;
@@ -385,4 +388,6 @@ bool TCPStreamFollower::callback(PDU& pdu,
 
 } // Tins
 
+#endif // TINS_HAVE_PCAP
+
 #endif // TINS_TCP_STREAM_H