[Bugfix] Improve consistency in getgateway.h

packages/network_info_plus/network_info_plus/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.1.5
+
+- IOS: Fix potential issues with building native Objective C code.
+
 ## 2.1.4+1
 
 - Add issue_tracker link.
@@ -6,7 +10,6 @@
 
 - Android: Plugin no longer removes `"` from SSID name.
 
-
 ## 2.1.3
 
 - Update nm dependency to be compatible with fresh versions of other Plus plugins
@@ -50,7 +53,6 @@
 
 - migrate integration_test to flutter sdk
 
-
 ## 1.1.0
 
 - Android, IOS: Adding IPv6 information

packages/network_info_plus/network_info_plus/ios/Classes/getgateway.h

@@ -5,6 +5,8 @@
 //  Created by Dimitri Dessus on 08/07/2021.
 //
 
+#include <netinet/in.h>
+
 #ifndef getgateway_h
 #define getgateway_h
 

packages/network_info_plus/network_info_plus/ios/Classes/getgateway.m

@@ -0,0 +1,78 @@
+//
+//  getgateway.c
+//  network_info_plus
+//
+//  Created by Dimitri Dessus on 08/07/2021.
+//
+// directly cloned from https://stackoverflow.com/a/29440193/5078902
+// thanks to Alex0072005
+
+#include "getgateway.h"
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/sysctl.h>
+
+#include "route.h"
+#define TypeEN "en0"
+
+#include <net/if.h>
+#include <string.h>
+
+#define CTL_NET 4 /* network, see socket.h */
+
+#if defined(BSD) || defined(__APPLE__)
+
+#define ROUNDUP(a)                                                             \
+  ((a) > 0 ? (1 + (((a)-1) | (sizeof(long) - 1))) : sizeof(long))
+
+int getDefaultGateway(in_addr_t *addr) {
+  int mib[] = {CTL_NET, PF_ROUTE, 0, AF_INET, NET_RT_FLAGS, RTF_GATEWAY};
+  size_t l;
+  char *buf, *p;
+  struct rt_msghdr *rt;
+  struct sockaddr *sa;
+  struct sockaddr *sa_tab[RTAX_MAX];
+  int i;
+  int r = -1;
+  if (sysctl(mib, sizeof(mib) / sizeof(int), 0, &l, 0, 0) < 0) {
+    return -1;
+  }
+  if (l > 0) {
+    buf = malloc(l);
+    if (sysctl(mib, sizeof(mib) / sizeof(int), buf, &l, 0, 0) < 0) {
+      return -1;
+    }
+    for (p = buf; p < buf + l; p += rt->rtm_msglen) {
+      rt = (struct rt_msghdr *)p;
+      sa = (struct sockaddr *)(rt + 1);
+      for (i = 0; i < RTAX_MAX; i++) {
+        if (rt->rtm_addrs & (1 << i)) {
+          sa_tab[i] = sa;
+          sa = (struct sockaddr *)((char *)sa + ROUNDUP(sa->sa_len));
+        } else {
+          sa_tab[i] = NULL;
+        }
+      }
+
+      if (((rt->rtm_addrs & (RTA_DST | RTA_GATEWAY)) ==
+           (RTA_DST | RTA_GATEWAY)) &&
+          sa_tab[RTAX_DST]->sa_family == AF_INET &&
+          sa_tab[RTAX_GATEWAY]->sa_family == AF_INET) {
+
+        if (((struct sockaddr_in *)sa_tab[RTAX_DST])->sin_addr.s_addr == 0) {
+          char ifName[128];
+          if_indextoname(rt->rtm_index, ifName);
+          if (strcmp(TypeEN, ifName) == 0) {
+            *addr =
+                ((struct sockaddr_in *)(sa_tab[RTAX_GATEWAY]))->sin_addr.s_addr;
+            r = 0;
+          }
+        }
+      }
+    }
+    free(buf);
+  }
+  return r;
+}
+#endif

packages/network_info_plus/network_info_plus/pubspec.yaml

@@ -1,6 +1,6 @@
 name: network_info_plus
 description: Flutter plugin for discovering information (e.g. WiFi details) of the network.
-version: 2.1.4+1
+version: 2.1.5
 homepage: https://plus.fluttercommunity.dev/
 repository: https://github.com/fluttercommunity/plus_plugins/tree/main/packages/
 issue_tracker: https://github.com/fluttercommunity/plus_plugins/labels/network_info_plus