From ef2d5fa0dd084e1532dd233b454be2adac775f62 Mon Sep 17 00:00:00 2001
From: takeshix <takeshix@adversec.com>
Date: Fri, 24 Jul 2020 10:24:19 +0200
Subject: [PATCH] Updated tcpdump workflows

---
 .github/workflows/build-tcpdump-x86_64.yml | 40 +++++++++------------
 build/targets/build_tcpdump.sh             | 41 ++++++++++++++++++++++
 2 files changed, 57 insertions(+), 24 deletions(-)
 create mode 100755 build/targets/build_tcpdump.sh

diff --git a/.github/workflows/build-tcpdump-x86_64.yml b/.github/workflows/build-tcpdump-x86_64.yml
index 58b6d0d..dc60964 100644
--- a/.github/workflows/build-tcpdump-x86_64.yml
+++ b/.github/workflows/build-tcpdump-x86_64.yml
@@ -8,32 +8,24 @@ jobs:
         container: muslcc/x86_64:x86_64-linux-musl
         steps:
 
-          - name: Build tcpdump
-            run: |
-              cd
-              apk update && apk add flex bison wget make
-              wget https://www.tcpdump.org/release/libpcap-1.9.1.tar.gz
-              tar xzf libpcap-1.9.1.tar.gz
-              cd libpcap-1.9.1/
-              ./configure --with-pcap=linux
-              make -j2
-              export LIBPCAP_PATH=$(pwd)
-              cd
-              wget https://www.tcpdump.org/release/tcpdump-4.9.3.tar.gz
-              tar xzf tcpdump-4.9.3.tar.gz
-              cd tcpdump-4.9.3/
-              export CFLAGS="-static -I${LIBPCAP_PATH} -L${LIBPCAP_PATH}"
-              export CPPFLAGS=-static
-              export LDFLAGS=-static
-              ./configure
-              make -j2
-              pwd
+          - name: Install dependencies
+            run: apk update && apk add bash git perl make cmake flex bison automake autoconf libtool qemu-arm qemu-aarch64 file texinfo zip wget
 
-          - name: List build dir
-            run: ls -la
+          - name: Checkout
+            uses: actions/checkout@v2
+
+          - name: Build tcpdump
+            id: build_tcpdump
+            run: $GITHUB_WORKSPACE/build/targets/build_tcpdump.sh x86_64
+
+          - name: List build directory
+            run: ls -la /build
+
+          - name: List build artifacts
+            run: ls -la /output
 
           - name: Upload artifacts
             uses: actions/upload-artifact@v2
             with:
-                name: tcpdump-4.9.3
-                path: /github/home/tcpdump-4.9.3/tcpdump
+                name: ${{ steps.build_tcpdump.outputs.PACKAGED_NAME }}
+                path: ${{ steps.build_tcpdump.outputs.PACKAGED_NAME_PATH }}
diff --git a/build/targets/build_tcpdump.sh b/build/targets/build_tcpdump.sh
new file mode 100755
index 0000000..730954f
--- /dev/null
+++ b/build/targets/build_tcpdump.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+set -e
+set -x
+set -o pipefail
+if [ "$#" -ne 1 ];then
+    echo "Usage: ${0} [x86|x86_64|armhf|aarch64]"
+    echo "Example: ${0} x86_64"
+    exit 1
+fi
+source $GITHUB_WORKSPACE/build/lib.sh
+init_lib "$1"
+
+build_tcpdump() {
+    fetch "https://github.com/the-tcpdump-group/tcpdump.git" "${BUILD_DIRECTORY}/tcpdump" git
+    cd "${BUILD_DIRECTORY}/tcpdump"
+    git clean -fdx
+    git checkout tcpdump-4.9.3
+    export LIBPCAP_PATH="${BUILD_DIRECTORY}/libpcap"
+    CFLAGS="${GCC_OPTS} -I${LIBPCAP_PATH} -L${LIBPCAP_PATH}" \
+        CXXFLAGS="${GXX_OPTS}" \
+        CPPFLAGS="-static" \
+        LDFLAGS="-static" \
+        ./configure \
+            --host="$(get_host_triple)"
+    make -j4
+    strip tcpdump
+}
+
+main() {
+    lib_build_libpcap
+    build_tcpdump
+    local version
+    version=$(get_version "${BUILD_DIRECTORY}/tcpdump/tcpdump --version 2>&1 | head -n1 | awk '{print \$3}'")
+    cp "${BUILD_DIRECTORY}/tcpdump/tcpdump" "${OUTPUT_DIRECTORY}/tcpdump"
+    echo "[+] Finished building tcpdump ${CURRENT_ARCH}"
+
+    echo ::set-output name=PACKAGED_NAME::"tcpdump${version}"
+    echo ::set-output name=PACKAGED_NAME_PATH::"${OUTPUT_DIRECTORY}/*"
+}
+
+main