basic LocalMP packet dump working

2 files changed, 26 insertions, 0 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3dfd3b0..1f6a3e7 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -178,3 +178,4 @@ endif()
 #  )
 #endif()
 
+target_link_libraries(core PRIVATE pcap)
diff --git a/src/frontend/qt_sdl/LocalMP.cpp b/src/frontend/qt_sdl/LocalMP.cpp
index 7ea9868..18d1b65 100644
--- a/src/frontend/qt_sdl/LocalMP.cpp
+++ b/src/frontend/qt_sdl/LocalMP.cpp
@@ -38,6 +38,11 @@
 #include "LocalMP.h"
 #include "Platform.h"
 
+#include <pcap/pcap.h>
+#include <time.h>
+
+pcap_dumper_t* dumper;
+
 using namespace melonDS;
 using namespace melonDS::Platform;
 
@@ -241,6 +246,11 @@ void SemReset(int num)
 
 bool Init()
 {
+    pcap_t* handle = pcap_open_dead(DLT_NULL, 1 << 16);
+    char filename[80];
+    snprintf(filename, 79, "melon_instance_%d.pcap", InstanceID);
+    dumper = pcap_dump_open(handle, filename);
+
     MPQueue = new QSharedMemory("melonNIFI");
 
     if (!MPQueue->attach())
@@ -302,6 +312,8 @@ bool Init()
 
 void DeInit()
 {
+    pcap_dump_close(dumper);
+
     if (MPQueue)
     {
         MPQueue->lock();
@@ -476,6 +488,12 @@ int SendPacketGeneric(u32 type, u8* packet, int len, u64 timestamp)
         }
     }
 
+    struct pcap_pkthdr p;
+    p.len = len;
+    p.caplen = len;
+    gettimeofday(&p.ts, NULL);
+    pcap_dump((u_char*) dumper, &p, packet);
+
     return len;
 }
 
@@ -526,6 +544,13 @@ int RecvPacketGeneric(u8* packet, bool block, u64* timestamp)
 
         if (timestamp) *timestamp = pktheader.Timestamp;
         MPQueue->unlock();
+
+        struct pcap_pkthdr p;
+        p.len = pktheader.Length;
+        p.caplen = pktheader.Length;
+        gettimeofday(&p.ts, NULL);
+        pcap_dump((u_char*) dumper, &p, packet);
+
         return pktheader.Length;
     }
 }