Add missing files

cpp/hal/log.h

@@ -0,0 +1,31 @@
+//---------------------------------------------------------------------------
+//
+//	SCSI Target Emulator PiSCSI
+//	for Raspberry Pi
+//
+//	Powered by XM6 TypeG Technology.
+//	Copyright (C) 2016-2020 GIMONS
+//  Copyright (C) 2020 akuker
+//
+//---------------------------------------------------------------------------
+
+// The legacy code in this file is deprecated and can cause a buffer overflow. Use spdlog directly instead.
+
+#pragma once
+
+#include <spdlog/spdlog.h>
+
+static const int LOGBUF_SIZE = 512;
+
+#define SPDLOGWRAPPER(loglevel, ...)			\
+{							\
+	char logbuf[LOGBUF_SIZE];				\
+	snprintf(logbuf, sizeof(logbuf), __VA_ARGS__);	\
+	spdlog::log(loglevel, logbuf);			\
+};
+
+#define LOGTRACE(...) SPDLOGWRAPPER(spdlog::level::trace, __VA_ARGS__)
+#define LOGDEBUG(...) SPDLOGWRAPPER(spdlog::level::debug, __VA_ARGS__)
+#define LOGINFO(...) SPDLOGWRAPPER(spdlog::level::info, __VA_ARGS__)
+#define LOGWARN(...) SPDLOGWRAPPER(spdlog::level::warn, __VA_ARGS__)
+#define LOGERROR(...) SPDLOGWRAPPER(spdlog::level::err, __VA_ARGS__)

cpp/shared/network_util.cpp

@@ -0,0 +1,75 @@
+//---------------------------------------------------------------------------
+//
+// SCSI Target Emulator PiSCSI
+// for Raspberry Pi
+//
+// Copyright (C) 2023 Uwe Seimet
+//
+//---------------------------------------------------------------------------
+
+#include "network_util.h"
+#include <cstring>
+#include <ifaddrs.h>
+#include <sys/ioctl.h>
+#include <netinet/in.h>
+#include <net/if.h>
+#include <unistd.h>
+#include <netdb.h>
+#include <unistd.h>
+
+using namespace std;
+
+bool network_util::IsInterfaceUp(const string& interface)
+{
+	ifreq ifr = {};
+    strncpy(ifr.ifr_name, interface.c_str(), IFNAMSIZ - 1); //NOSONAR Using strncpy is safe
+	const int fd = socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP);
+
+	if (!ioctl(fd, SIOCGIFFLAGS, &ifr) && (ifr.ifr_flags & IFF_UP)) {
+	    close(fd);
+    	return true;
+    }
+
+    close(fd);
+    return false;
+}
+
+set<string, less<>> network_util::GetNetworkInterfaces()
+{
+	set<string, less<>> network_interfaces;
+
+#ifdef __linux__
+	ifaddrs *addrs;
+	getifaddrs(&addrs);
+	ifaddrs *tmp = addrs;
+
+	while (tmp) {
+    	if (const string name = tmp->ifa_name; tmp->ifa_addr && tmp->ifa_addr->sa_family == AF_PACKET &&
+    		name != "lo" && name != "piscsi_bridge" && !name.starts_with("dummy") && IsInterfaceUp(name)) {
+    		// Only list interfaces that are up
+    		network_interfaces.insert(name);
+	    }
+
+	    tmp = tmp->ifa_next;
+	}
+
+	freeifaddrs(addrs);
+#endif
+
+	return network_interfaces;
+}
+
+bool network_util::ResolveHostName(const string& host, sockaddr_in *addr)
+{
+	addrinfo hints = {};
+	hints.ai_family = AF_INET;
+	hints.ai_socktype = SOCK_STREAM;
+
+	if (addrinfo *result; !getaddrinfo(host.c_str(), nullptr, &hints, &result)) {
+		*addr = *reinterpret_cast<sockaddr_in *>(result->ai_addr); //NOSONAR bit_cast is not supported by the bullseye compiler
+		freeaddrinfo(result);
+		return true;
+	}
+
+	return false;
+}

cpp/shared/network_util.h

@@ -0,0 +1,24 @@
+//---------------------------------------------------------------------------
+//
+// SCSI Target Emulator PiSCSI
+// for Raspberry Pi
+//
+// Copyright (C) 2023 Uwe Seimet
+//
+//---------------------------------------------------------------------------
+
+#pragma once
+
+#include <string>
+#include <set>
+
+using namespace std;
+
+struct sockaddr_in;
+
+namespace network_util
+{
+	bool IsInterfaceUp(const string&);
+	set<string, less<>> GetNetworkInterfaces();
+	bool ResolveHostName(const string&, sockaddr_in *);
+}

cpp/test/network_util_test.cpp

@@ -0,0 +1,33 @@
+//---------------------------------------------------------------------------
+//
+// SCSI Target Emulator PiSCSI
+// for Raspberry Pi
+//
+// Copyright (C) 2023 Uwe Seimet
+//
+//---------------------------------------------------------------------------
+
+#include <gtest/gtest.h>
+
+#include <netdb.h>
+#include <netinet/in.h>
+#include "shared/network_util.h"
+
+using namespace network_util;
+
+TEST(NetworkUtilTest, IsInterfaceUp)
+{
+	EXPECT_FALSE(IsInterfaceUp("foo_bar"));
+}
+
+TEST(NetworkUtilTest, GetNetworkInterfaces)
+{
+	EXPECT_FALSE(GetNetworkInterfaces().empty());
+}
+
+TEST(NetworkUtilTest, ResolveHostName)
+{
+	sockaddr_in server_addr = {};
+	EXPECT_FALSE(ResolveHostName("foo.foobar", &server_addr));
+	EXPECT_TRUE(ResolveHostName("127.0.0.1", &server_addr));
+}