un commited old code

clibs/ip.cc

@@ -2,6 +2,8 @@
 #include <iostream>
 #include <sys/ioctl.h>
 #include <net/if.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
 #include <net/route.h>
 #include <linux/sockios.h>
 #include <unistd.h>
@@ -48,6 +50,42 @@ namespace ipNode {
         args.GetReturnValue().Set(ifr.ifr_flags);
     }
 
+    void nodeSetIpv4(const nodeparam& args) {
+        v8::Isolate* isolate = args.GetIsolate();
+
+        if (args.Length() < 2 || !args[0]->IsString() || !args[1]->IsString()) {
+            isolate->ThrowException(v8::Exception::TypeError(
+                v8::String::NewFromUtf8(isolate, "Invalid arguments ip.setIpv4").ToLocalChecked()));
+            return;
+        }
+
+        const std::string iface = argToString(args[0]);;
+        const std::string ip = argToString(args[1]);
+
+        struct ifreq ifr;
+        struct sockaddr_in sai;
+
+        strncpy(ifr.ifr_name, iface.c_str(), IFNAMSIZ);
+
+        memset(&sai, 0, sizeof(struct sockaddr));
+        sai.sin_family = AF_INET;
+        sai.sin_port = 0;
+
+        sai.sin_addr.s_addr = inet_addr(ip.c_str());
+
+        memcpy( &ifr.ifr_ifru, &sai, sizeof(struct sockaddr));
+
+        int err = ioctl(inet_sock_fd, SIOCSIFADDR, &ifr);
+
+        if(err != 0) {
+            char errstr[36];
+            sprintf(errstr, "Error while getting flags %d", errno);
+            isolate->ThrowException(v8::Exception::TypeError(
+                v8::String::NewFromUtf8(isolate, errstr).ToLocalChecked()));
+        }
+        args.GetReturnValue().Set(ifr.ifr_flags);
+    }
+
     void nodeSetFlags(const nodeparam& args) {
         v8::Isolate* isolate = args.GetIsolate();
 
@@ -66,6 +104,7 @@ namespace ipNode {
     void Initialize(v8::Local<v8::Object> exports) {
         NODE_SET_METHOD(exports, "setFlags", nodeSetFlags);
         NODE_SET_METHOD(exports, "getFlags", nodeGetFlags);
+        NODE_SET_METHOD(exports, "setIpv4", nodeSetIpv4);
     }
 
     NODE_MODULE(ip_api, Initialize)