Draft for freeBSD port

Author: danielinux

.github/workflows/freebsd.yml

@@ -0,0 +1,31 @@
+name: FreeBSD interop tests
+
+on:
+  push:
+    branches: [ 'master', 'main', 'release/**' ]
+  pull_request:
+    branches: [ '*' ]
+
+jobs:
+  freebsd_test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Build and run tests on FreeBSD
+        uses: vmactions/freebsd-vm@v0
+        with:
+          release: '14.1'
+          run: |
+            pkg update -f
+            pkg install -y gmake gcc wolfssl
+            kldload if_tap || true
+            sysctl net.link.tap.up_on_open=1 || true
+            cd /github/workspace
+            gmake build/test-evloop build/test-wolfssl build/test-ttl-expired
+            ./build/test-evloop
+            ./build/test-wolfssl
+            ./build/test-ttl-expired

Makefile

@@ -3,6 +3,19 @@ CFLAGS:=-Wall -Werror -Wextra -I. -D_GNU_SOURCE
 CFLAGS+=-g -ggdb -Wdeclaration-after-statement
 LDFLAGS+=-pthread
 
+UNAME_S:=$(shell uname -s)
+UNAME_LC:=$(shell echo $(UNAME_S) | tr 'A-Z' 'a-z')
+ifeq ($(UNAME_S),FreeBSD)
+CFLAGS+=-I/usr/local/include
+LDFLAGS+=-L/usr/local/lib
+endif
+TAP_SRC:=src/port/posix/tap_$(UNAME_LC).c
+ifeq ($(wildcard $(TAP_SRC)),)
+TAP_SRC:=src/port/posix/tap_linux.c
+endif
+TAP_OBJ:=$(patsubst src/%.c,build/%.o,$(TAP_SRC))
+TAP_PIE_OBJ:=$(patsubst src/%.c,build/pie/%.o,$(TAP_SRC))
+
 CPPCHECK=cppcheck
 CPPCHECK_FLAGS=--enable=warning,performance,portability,missingInclude \
 			   --suppress=missingIncludeSystem \
@@ -21,11 +34,16 @@ CPPCHECK_FLAGS=--enable=warning,performance,portability,missingInclude \
 			   --error-exitcode=1 --xml --xml-version=2
 
 OBJ=build/wolfip.o \
-	build/port/posix/linux_tap.o
+	$(TAP_OBJ)
+
+HAVE_WOLFSSL:=$(shell printf "#include <wolfssl/options.h>\nint main(void){return 0;}\n" | $(CC) $(CFLAGS) -x c - -c -o /dev/null 2>/dev/null && echo 1)
+ifeq ($(HAVE_WOLFSSL),)
+$(error wolfSSL headers not found. Please install wolfSSL or adjust include paths)
+endif
 
 EXE=build/tcpecho build/tcp_netcat_poll build/tcp_netcat_select \
 	build/test-evloop build/test-dns build/test-wolfssl-forwarding \
-	build/test-ttl-expired build/test-wolfssl
+	build/test-ttl-expired build/test-wolfssl build/test-httpd
 LIB=libwolfip.so
 
 PREFIX=/usr/local
@@ -44,7 +62,7 @@ libtcpip.a: $(OBJ)
 
 libwolfip.so:CFLAGS+=-fPIC
 libwolfip.so:  build/pie/port/posix/bsd_socket.o build/pie/wolfip.o \
-	build/pie/port/posix/linux_tap.o
+	$(TAP_PIE_OBJ)
 	@mkdir -p `dirname $@` || true
 	@echo "[LD] $@"
 	@$(CC) $(CFLAGS) $(LDFLAGS) -shared -o $@ -Wl,--start-group $(^) -Wl,--end-group
@@ -62,11 +80,11 @@ asan:LDFLAGS+=-static-libasan
 # Test
 
 unit:LDFLAGS+=-lcheck -lm -lpthread -lrt -ldl -lsubunit
-build/test-evloop: $(OBJ) build/test/test_linux_eventloop.o
+build/test-evloop: $(OBJ) build/test/test_eventloop.o
 	@echo "[LD] $@"
 	@$(CC) $(CFLAGS) $(LDFLAGS) -o $@ -Wl,--start-group $(^) -Wl,--end-group
 
-build/test-dns: $(OBJ) build/test/test_linux_dhcp_dns.o
+build/test-dns: $(OBJ) build/test/test_dhcp_dns.o
 	@echo "[LD] $@"
 	@$(CC) $(CFLAGS) $(LDFLAGS) -o $@ -Wl,--start-group $(^) -Wl,--end-group
 
@@ -87,12 +105,11 @@ build/test-wolfssl:CFLAGS+=-Wno-cpp -DWOLFSSL_DEBUG -DWOLFSSL_WOLFIP
 build/test-httpd:CFLAGS+=-Wno-cpp -DWOLFSSL_DEBUG -DWOLFSSL_WOLFIP -Isrc/http
 build/test-wolfssl-forwarding:CFLAGS+=-Wno-cpp -DWOLFSSL_DEBUG -DWOLFSSL_WOLFIP -DWOLFIP_MAX_INTERFACES=2 -DWOLFIP_ENABLE_FORWARDING=1
 
-
 build/test-wolfssl: $(OBJ) build/test/test_native_wolfssl.o build/port/wolfssl_io.o build/certs/server_key.o build/certs/ca_cert.o build/certs/server_cert.o
 	@echo "[LD] $@"
 	@$(CC) $(CFLAGS) $(LDFLAGS) -o $@ -Wl,--start-group $(^) -lwolfssl -Wl,--end-group
 
-build/test-wolfssl-forwarding: build/test/test_wolfssl_forwarding.o build/test/wolfip_forwarding.o build/port/posix/linux_tap.o build/port/wolfssl_io.o build/certs/server_key.o build/certs/ca_cert.o build/certs/server_cert.o
+build/test-wolfssl-forwarding: build/test/test_wolfssl_forwarding.o build/test/wolfip_forwarding.o $(TAP_OBJ) build/port/wolfssl_io.o build/certs/server_key.o build/certs/ca_cert.o build/certs/server_cert.o
 	@echo "[LD] $@"
 	@$(CC) $(CFLAGS) $(LDFLAGS) -o $@ -Wl,--start-group $(^) -lwolfssl -Wl,--end-group
 

config.h

@@ -29,6 +29,6 @@
 
 /* Linux test configuration */
 #define WOLFIP_IP "10.10.10.2"
-#define LINUX_IP "10.10.10.1"
+#define HOST_STACK_IP "10.10.10.1"
 
 #endif

src/port/posix/bsd_socket.c

@@ -532,8 +532,8 @@ int poll(struct pollfd *fds, nfds_t nfds, int timeout) {
 
 
 /* Catch-all function to initialize a new tap device as the network interface.
- * This is defined in port/linux.c
- * */
+ * Implemented in port/posix/tap_*.c
+ */
 extern int tap_init(struct wolfIP_ll_dev *dev, const char *name, uint32_t host_ip);
 
 void *wolfIP_sock_posix_ip_loop(void *arg) {
@@ -552,12 +552,12 @@ void *wolfIP_sock_posix_ip_loop(void *arg) {
 }
 
 void __attribute__((constructor)) init_wolfip_posix() {
-    struct in_addr linux_ip; 
+    struct in_addr host_stack_ip; 
     struct wolfIP_ll_dev *tapdev;
     pthread_t wolfIP_thread;
     if (IPSTACK)
         return;
-    inet_aton(LINUX_IP, &linux_ip);
+    inet_aton(HOST_STACK_IP, &host_stack_ip);
     swap_socketcall(socket, "socket");
     swap_socketcall(bind, "bind");
     swap_socketcall(listen, "listen");
@@ -581,14 +581,13 @@ void __attribute__((constructor)) init_wolfip_posix() {
     pthread_mutex_init(&wolfIP_mutex, NULL);
     wolfIP_init_static(&IPSTACK);
     tapdev = wolfIP_getdev(IPSTACK);
-    if (tap_init(tapdev, "wtcp0", linux_ip.s_addr) < 0) {
+    if (tap_init(tapdev, "wtcp0", host_stack_ip.s_addr) < 0) {
         perror("tap init");
     }
     wolfIP_ipconfig_set(IPSTACK, atoip4(WOLFIP_IP), atoip4("255.255.255.0"),
-            atoip4(LINUX_IP));
+            atoip4(HOST_STACK_IP));
     printf("IP: manually configured - %s\n", WOLFIP_IP);
     sleep(1);
     pthread_create(&wolfIP_thread, NULL, wolfIP_sock_posix_ip_loop, IPSTACK);
     in_the_stack = 0;
 }
-