LocalIP (Linux): fix network prefix detection when the value is greater than 24

CarterLi · CarterLi · commit de6b1f954266 · 2024-04-04T10:08:26.000+08:00
diff --git a/src/detection/localip/localip_linux.c b/src/detection/localip/localip_linux.c
@@ -84,7 +84,7 @@ const char* ffDetectLocalIps(const FFLocalIpOptions* options, FFlist* results)
             inet_ntop(AF_INET, &ipv4->sin_addr, addressBuffer, INET_ADDRSTRLEN);
 
             struct sockaddr_in* netmask = (struct sockaddr_in*) ifa->ifa_netmask;
-            int cidr = __builtin_popcount(inet_netof(netmask->sin_addr));
+            int cidr = __builtin_popcount(netmask->sin_addr.s_addr);
             if (cidr != 0)
             {
                 size_t len = strlen(addressBuffer);

Original file line number	Diff line number	Diff line change
`@@ -84,7 +84,7 @@ const char* ffDetectLocalIps(const FFLocalIpOptions* options, FFlist* results)`
`84`	`84`	`inet_ntop(AF_INET, &ipv4->sin_addr, addressBuffer, INET_ADDRSTRLEN);`
`85`	`85`
`86`	`86`	`struct sockaddr_in* netmask = (struct sockaddr_in*) ifa->ifa_netmask;`
`87`		`- int cidr = __builtin_popcount(inet_netof(netmask->sin_addr));`
	`87`	`+ int cidr = __builtin_popcount(netmask->sin_addr.s_addr);`
`88`	`88`	`if (cidr != 0)`
`89`	`89`	`{`
`90`	`90`	`size_t len = strlen(addressBuffer);`