Arp tool (#2155)

* let cmake set path to arp

* declare cameras array

* fix probeV4L function

* typo

* fix another typo - my machine is possessed.

* update redhat, debian, ubuntu build dependencies

CMakeLists.txt

@@ -802,6 +802,24 @@ if(WITH_SYSTEMD)
     endif(NOT POLKIT_FOUND)
 endif(WITH_SYSTEMD)
 
+# Find the path to an arp compatible executable
+if(ZM_PATH_ARP STREQUAL "")
+    find_program(ARP_EXECUTABLE arp)
+    if(ARP_EXECUTABLE)
+        set(ZM_PATH_ARP "${ARP_EXECUTABLE}")
+        mark_as_advanced(ARP_EXECUTABLE)
+    else(ARP_EXECUTABLE)
+        find_program(ARP_EXECUTABLE ip)
+            if(ARP_EXECUTABLE)
+                set(ZM_PATH_ARP "${ARP_EXECUTABLE} neigh")
+                mark_as_advanced(ARP_EXECUTABLE)
+            endif(ARP_EXECUTABLE)
+    endif(ARP_EXECUTABLE)
+    if(ARP_EXECUTABLE-NOTFOUND)
+        message(WARNING "Unable to find a compatible arp binary. Monitor probe will not function." )
+    endif(ARP_EXECUTABLE-NOTFOUND)
+endif(ZM_PATH_ARP STREQUAL "")
+
 # Some variables that zm expects
 set(ZM_PID "${ZM_RUNDIR}/zm.pid")
 set(ZM_CONFIG "${ZM_CONFIG_DIR}/zm.conf")

distros/debian/control

@@ -13,6 +13,7 @@ Build-Depends: debhelper (>= 9), cmake
     , libv4l-dev (>= 0.8.3)
     , libbz2-dev
     , ffmpeg | libav-tools
+    , net-tools
     , libnetpbm10-dev
     , libvlccore-dev, libvlc-dev
     , libcurl4-gnutls-dev | libcurl4-nss-dev | libcurl4-openssl-dev

distros/redhat/zoneminder.spec

@@ -52,6 +52,7 @@ BuildRequires: pcre-devel
 BuildRequires: libjpeg-turbo-devel
 BuildRequires: findutils
 BuildRequires: coreutils
+BuildRequires: net-tools
 BuildRequires: perl
 BuildRequires: perl-generators
 BuildRequires: perl(Archive::Tar)

distros/ubuntu1604/control

@@ -11,6 +11,8 @@ Build-Depends: debhelper (>= 9), dh-systemd, python-sphinx | python3-sphinx, apa
               ,libavformat-dev  (>= 6:10~)
               ,libavutil-dev (>= 6:10~)
               ,libswscale-dev (>= 6:10~)
+              ,ffmpeg | libav-tools
+              ,net-tools
               ,libbz2-dev
               ,libgcrypt-dev | libgcrypt11-dev
               ,libcurl4-gnutls-dev

web/skins/classic/views/monitorprobe.php

@@ -110,6 +110,7 @@ function probeV4L() {
 		$device['inputs'] = $inputs;
 		$devices[] = $device;
 	} # end foreach output line
+  return $cameras;
 } # end function probeV4L
 
 // Probe Network Cameras
@@ -206,7 +207,7 @@ function probeVivotek($ip) {
       'Width'    => 352,
       'Height'   => 240,
     ),
-  );
+  );t
   if ( $lines = @file($url) ) {
     foreach ( $lines as $line ) {
       $line = rtrim($line);
@@ -242,35 +243,14 @@ function probeWansview($ip) {
 }
 
 function probeNetwork() {
-	// Calling arp without the full path was reported to fail on some systems
+    $cameras = array();
-	// Use the builtin unix command "type" to tell us where the command is
-	$arp_command = '';
-	$result = explode(' ', ZM_PATH_ARP);
-	if ( !is_executable($result[0]) ) {
-		if ( ZM_PATH_ARP ) {
-			Warning("User assigned ARP tool not found. Verify ZM_PATH_ARP points to a valid arp tool and is executable by the web user account.");
-		}
-		$result = exec('type -p arp', $output, $status);
-		if ( $status ) {
-			Warning("Unable to determine path for arp command, type -p arp returned '$status' output is: " . implode("\n", $output));
-			unset($output);
-			$result = exec('which arp', $output, $status);
-			if ( $status ) {
-				Warning("Unable to determine path for arp command, which arp returned '$status'");
-				if ( file_exists('/usr/sbin/arp') ) {
-					$arp_command = '/usr/sbin/arp -a';
-				}
-			} else {
-				$arp_command = $output[0].' -a';
-			}
-		} else {
-			$arp_command = $output[0].' -a';
-		}
-	} else {
     $arp_command = ZM_PATH_ARP;
+    $result = explode(' ', $arp_command);
+    if ( !is_executable($result[0]) ) {
+        Error("ARP compatible binary not found or not executable by the web user account. Verify ZM_PATH_ARP points to a valid arp tool.");
+        return;
     }
-	// Now that we know where arp is, call it using the full path
+
-	unset($output);
     $result = exec(escapeshellcmd($arp_command), $output, $status);
     if ( $status ) {
         Error("Unable to probe network cameras, status is '$status'");