Working on Windows 7

README.md

@@ -37,7 +37,7 @@ very straightforward in node.
 ## Installation
 
 You will need `libpcap` installed.  Most OSX machines seem to have it.  All major Linux distributions have it available
-either by default or with a package like `libpcap-dev`.
+either by default or with a package like `libpcap-dev`. For Windows see below.
 
 The easiest way to get `node_pcap` and its tools is with `npm`:
 
@@ -55,6 +55,22 @@ To compile the native code bindings, do this:
 Assuming it built without errors, you should be able to run the examples and then write your own packet
 capture programs.
 
+### Windows
+
+To use this module on Windows you will need to download the [WinPcap Developer Pack](http://www.winpcap.org/devel.htm) and unzip it to your favourite location. For example `C:\src\WpdPack-4.1.2`.
+
+You will then need to add the path to your environment variables under `WINPCAP_DIR`.
+
+Now, before running `npm install pcap`, you may need to run one of the following depending on your architecture.
+
+```
+call "C:\Program Files\Microsoft SDKs\Windows\v7.1\bin\Setenv.cmd" /Release /x86
+# or
+call "C:\Program Files\Microsoft SDKs\Windows\v7.1\bin\Setenv.cmd" /Release /x64
+```
+
+Now run `npm install pcap` and everything should be fine, fingers crossed.
+
 
 ## Usage
 

binding.gyp

@@ -1,16 +1,43 @@
 {
-  "targets": [
-    {
-      "target_name": "pcap_binding",
-      "sources": [ "pcap_binding.cc", "pcap_session.cc" ],
-      "include_dirs": [
-        "<!(node -e \"require('nan')\")"
-      ],
-      "link_settings": {
-          "libraries": [
-              "-lpcap"
-          ]
-      }
-    }
-  ]
+    "targets": [
+        {
+            "target_name": "pcap_binding",
+            "sources": [ "pcap_binding.cc", "pcap_session.cc" ],
+            "include_dirs": [
+                "<!(node -e \"require('nan')\")"
+            ],
+            'conditions': [
+                ['OS=="win"', {
+                    'include_dirs': [
+                        "C:\\dev\\src\\WpdPack-4.1.2\\Include"
+                    ],
+                    'conditions': [
+                        ['target_arch == "x64"', {
+                            'link_settings': {
+                                'libraries': [
+                                    '-l$(WINPCAP_DIR)\\Lib\\x64\\wpcap',
+                                    '-l$(WINPCAP_DIR)\\Lib\\x64\\Packet',
+                                    '-lws2_32'
+                                ]
+                            }
+                        }, { # target_arch != "x64"
+                            'link_settings': {
+                                'libraries': [
+                                    '-l$(WINPCAP_DIR)\\Lib\\wpcap',
+                                    '-l$(WINPCAP_DIR)\\Lib\\Packet',
+                                    '-lws2_32'
+                                ]
+                            }
+                        }]
+                    ]
+                }, { # OS != "win"
+                    "link_settings": {
+                        "libraries": [
+                            "-lpcap"
+                        ]
+                    },
+                }]
+            ]
+        }
+    ]
 }

examples/parse_file.js

@@ -0,0 +1,29 @@
+var pcap = require("../pcap");
+
+var pcapfile = process.argv[2];
+
+if (!pcapfile) {
+    console.log('ERROR: you must define a pcap file to open')
+    process.exit(1);
+}
+
+console.log('opening:', pcapfile);
+
+var pcap_session = pcap.createOfflineSession(pcapfile);
+
+var packetCount = 0;
+
+pcap_session.on('packet', function (raw_packet) {
+    var packet = pcap.decode.packet(raw_packet);
+
+    packetCount++;
+
+    // console.log('packet:', packet);
+    if (packet.hasOwnProperty('payload')) {
+        // console.log('payload:', packet.payload.payload);
+    }
+});
+
+pcap_session.on('complete', function() {
+    console.log('counted', packetCount, 'packets');
+});

pcap_binding.cc

@@ -1,13 +1,19 @@
-#include <assert.h>
-#include <pcap/pcap.h>
-#include <iostream>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
+
+#if defined(_WIN32) || defined(_WIN64)
+#include <winsock2.h>
+#else
 #include <sys/time.h>
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
+#endif
+
+#include <assert.h>
+#include <pcap/pcap.h>
+#include <iostream>
+#include <stdio.h>
 
 #include "pcap_session.h"
 

pcap_session.cc

@@ -1,6 +1,11 @@
+#if defined(_WIN32) || defined(_WIN64)
+#include <winsock2.h>
+#else
+#include <sys/ioctl.h>
+#endif
+
 #include <assert.h>
 #include <pcap/pcap.h>
-#include <sys/ioctl.h>
 #include <cstring>
 #include <string.h>
 
@@ -207,6 +212,10 @@ _NAN_METHOD_RETURN_TYPE PcapSession::Open(bool live, _NAN_METHOD_ARGS)
             NanReturnUndefined();
         }
 
+#if defined(_WIN32) || defined(_WIN64)
+        // Not available in WinPcap developer pack 4.1.2 yet. Is in WinPcap
+        // 4.1.3 but this is source only.
+#else
         // fixes a previous to-do that was here.
         if (args.Length() == 6) {
             if (args[5]->Int32Value()) {
@@ -216,6 +225,7 @@ _NAN_METHOD_RETURN_TYPE PcapSession::Open(bool live, _NAN_METHOD_ARGS)
                 }
             }
         }
+#endif
 
         if (pcap_activate(session->pcap_handle) != 0) {
             NanThrowError(pcap_geterr(session->pcap_handle));
@@ -287,7 +297,11 @@ _NAN_METHOD_RETURN_TYPE PcapSession::Open(bool live, _NAN_METHOD_ARGS)
         ret = NanNew("LINKTYPE_LINUX_SLL");
         break;
     default:
+#if defined(_WIN32) || defined(_WIN64)
+        sprintf_s(errbuf, PCAP_ERRBUF_SIZE, "Unknown linktype %d", link_type);
+#else
         snprintf(errbuf, PCAP_ERRBUF_SIZE, "Unknown linktype %d", link_type);
+#endif
         ret = NanNew(errbuf);
         break;
     }
@@ -326,7 +340,13 @@ NAN_METHOD(PcapSession::Fileno)
 
     PcapSession* session = ObjectWrap::Unwrap<PcapSession>(args.This());
 
-    int fd = pcap_get_selectable_fd(session->pcap_handle);
+    int fd;
+
+#if defined(_WIN32) || defined(_WIN64)
+    fd = (int)session->pcap_handle;
+#elif _linux_
+    fd = pcap_get_selectable_fd(session->pcap_handle);
+#endif
 
     NanReturnValue(NanNew<Integer>(fd));
 }
@@ -376,10 +396,16 @@ NAN_METHOD(PcapSession::Inject)
     bufferData = node::Buffer::Data(buffer_obj);
     bufferLength = node::Buffer::Length(buffer_obj);
 
+#if defined(_WIN32) || defined(_WIN64)
+    if (pcap_sendpacket(session->pcap_handle, (const u_char*)bufferData, bufferLength) != 0) {
+        NanThrowError("Pcap inject failed.");
+        NanReturnUndefined();
+    }
+#else
     if (pcap_inject(session->pcap_handle, bufferData, bufferLength) != (int)bufferLength) {
         NanThrowError("Pcap inject failed.");
         NanReturnUndefined();
     }
+#endif
     NanReturnUndefined();
 }
-