From b16f9a6176bfac30c0e7d29ec6df37e750fd1c60 Mon Sep 17 00:00:00 2001
From: aozhiwei <aozhiwei@kingsome.cn>
Date: Mon, 21 Jun 2021 05:27:52 +0000
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0GetLocalIp?=
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---
 a8/sysutils.cc | 24 ++++++++++++++++++++++++
 a8/sysutils.h  |  1 +
 2 files changed, 25 insertions(+)

diff --git a/a8/sysutils.cc b/a8/sysutils.cc
index c3cd3d8..e266e8a 100644
--- a/a8/sysutils.cc
+++ b/a8/sysutils.cc
@@ -5,6 +5,9 @@
 #include <arpa/inet.h>
 #include <memory.h>
 
+#include <net/if.h>
+#include <sys/ioctl.h>
+
 #include <a8/a8.h>
 #include <a8/sysutils.h>
 
@@ -167,6 +170,27 @@ namespace a8
         return std::string(buf);
     }
 
+    bool GetLocalIp(std::string& ip_address)
+    {
+        int sfd, intr;
+        struct ifreq buf[16];
+        struct ifconf ifc;
+        sfd = ::socket(AF_INET, SOCK_DGRAM, 0);
+        if (sfd < 0) {
+            return false;
+        }
+        ifc.ifc_len = sizeof(buf);
+        ifc.ifc_buf = (caddr_t)buf;
+        if (::ioctl(sfd, SIOCGIFCONF, (char *)&ifc)) {
+            return false;
+        }
+        intr = ifc.ifc_len / sizeof(struct ifreq);
+        while (intr-- > 0 && ::ioctl(sfd, SIOCGIFADDR, (char *)&buf[intr]));
+        ::close(sfd);
+        ip_address = inet_ntoa(((struct sockaddr_in*)(&buf[intr].ifr_addr))-> sin_addr);
+        return true;
+    }
+
     std::string FormatDateTime(time_t time_val)
     {
         struct tm tm_time = {0};
diff --git a/a8/sysutils.h b/a8/sysutils.h
index 140bfd1..9710661 100644
--- a/a8/sysutils.h
+++ b/a8/sysutils.h
@@ -76,6 +76,7 @@ namespace a8
     bool MkDir(const std::string& path);
     void ForceCreateDir(const std::string& path);
     std::string GetIpAddress(unsigned long ip_saddr);
+    bool GetLocalIp(std::string& ip_address);
 
     std::string FormatDateTime(time_t time_val);
     std::string TimestampToDateTime(time_t time_val);