tools: netinfo

.gitignore

@@ -32,6 +32,8 @@ tools/prof/astral-prof
 tools/prof/main.o
 tools/systrace/systrace
 tools/systrace/main.o
+tools/netinfo/main.o
+tools/netinfo/netinfo
 initrds
 hdd.img
 netdump.dat

recipes/netinfo

@@ -0,0 +1,14 @@
+name=netinfo
+revision=1
+from_source=netinfo
+imagedeps="build-essential"
+hostdeps="xbinutils xgcc"
+deps="base"
+
+build() {
+	make -C ${source_dir} -j ${parallelism}
+}
+
+package() {
+	make -C ${source_dir} install PREFIX=${prefix} DESTDIR=${dest_dir}
+}

source-recipes/netinfo

@@ -0,0 +1,3 @@
+name=netinfo
+version=0
+source_dir="tools/netinfo"

tools/netinfo/Makefile

@@ -0,0 +1,14 @@
+.phony: all install
+CC=x86_64-astral-gcc
+LD=x86_64-astral-gcc
+all: netinfo
+
+install:
+	mkdir -p "$(DESTDIR)/$(PREFIX)/sbin/"
+	cp netinfo "$(DESTDIR)/$(PREFIX)/sbin/netinfo"
+
+netinfo: main.o
+	$(LD) $(LDFLAGS) -g -o $@ $^
+
+main.o: main.c
+	$(CC) -c $(CFLAGS) -g -o $@ $<

tools/netinfo/main.c

@@ -0,0 +1,38 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <ifaddrs.h>
+#include <arpa/inet.h>
+#include <net/if.h>
+
+static void print_error(const char *msg, const int error) {
+        fprintf(stderr, "%s: %s: %s\n", program_invocation_short_name, msg, strerror(error));
+}
+
+int main(const int argc, const char *argv[]) {
+        struct ifaddrs *ifaddrs;
+        if (getifaddrs(&ifaddrs)) {
+                print_error("getifaddrs", errno);
+                return EXIT_FAILURE;
+        }
+
+        for (struct ifaddrs *ifaddr = ifaddrs; ifaddr; ifaddr = ifaddr->ifa_next) {
+		if (ifaddr->ifa_addr->sa_family != AF_INET) 
+			continue;
+
+                printf("%s: flags: 0x%x%s%s%s\n",
+			ifaddr->ifa_name, ifaddr->ifa_flags,
+			ifaddr->ifa_flags & IFF_UP       ? " UP"        : "",
+			ifaddr->ifa_flags & IFF_LOOPBACK ? " LOOPBACK"  : "",
+			ifaddr->ifa_flags & IFF_RUNNING  ? " RUNNING"   : "");
+                printf("%s: address: %s\n", ifaddr->ifa_name, ifaddr->ifa_addr ? inet_ntoa(((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr) : "?");
+                printf("%s: mask: %s\n", ifaddr->ifa_name, ifaddr->ifa_netmask ? inet_ntoa(((struct sockaddr_in *)ifaddr->ifa_netmask)->sin_addr) : "?");
+                printf("%s: broadcast: %s\n", ifaddr->ifa_name, ifaddr->ifa_broadaddr ? inet_ntoa(((struct sockaddr_in *)ifaddr->ifa_broadaddr)->sin_addr) : "?");
+        }
+
+	freeifaddrs(ifaddrs);
+
+        return EXIT_SUCCESS;
+}