Add package update count and reboot pending to host server info card

bin/malpd

@@ -169,6 +169,49 @@ def read_virtual_machines
   end
 end
 
+def read_os_id
+  return nil unless File.exist?("/etc/os-release")
+  File.readlines("/etc/os-release").each do |line|
+    if line =~ /^ID=(.+)$/
+      return $1.strip.delete('"').downcase
+    end
+  end
+  nil
+end
+
+def apt_updates
+  out = `apt-get -s -o Debug::NoLocking=true upgrade 2>/dev/null`
+  count = 0
+  out.each_line do |line|
+    count += 1 if line.start_with?("Inst ")
+  end
+  count
+end
+
+def apt_reboot_pending
+  File.exist?("/var/run/reboot-required")
+end
+
+def dnf_updates
+  out = `dnf -q check-update 2>/dev/null`
+  status = $?.exitstatus
+  return 0 if status == 0
+  return nil unless status == 100
+  count = 0
+  out.each_line do |line|
+    line = line.strip
+    next if line.empty?
+    next if line.start_with?("Obsoleting", "Last metadata")
+    count += 1 if line.split(/\s+/).size >= 3
+  end
+  count
+end
+
+def dnf_reboot_pending
+  `dnf needs-restarting -r >/dev/null 2>&1`
+  $?.exitstatus == 1
+end
+
 def read_server_info
   info = { "type" => "server" }
 
@@ -181,6 +224,15 @@ def read_server_info
     end
   end
 
+  case read_os_id
+  when "ubuntu", "debian"
+    info["updates"] = apt_updates
+    info["reboot_pending"] = apt_reboot_pending
+  when "almalinux", "rocky", "rhel", "centos", "fedora"
+    info["updates"] = dnf_updates
+    info["reboot_pending"] = dnf_reboot_pending
+  end
+
   out = `stat -c %W / 2>/dev/null`.strip
   if out =~ /^\d+$/ && out.to_i > 0
     info["install_date"] = Time.at(out.to_i).strftime("%Y-%m-%d")

cgi-bin/malp.rb

@@ -125,8 +125,19 @@ if cgi.params.key?("content")
     html << %(<div>)
 
     if server
+      srv_stats = []
+      if updates = server["updates"]
+        cls = updates == 0 ? "ok" : "warn"
+        srv_stats << [cls, "#{updates} update#{updates == 1 ? "" : "s"}"]
+      end
+      if server["reboot_pending"]
+        srv_stats << ["warn", "Reboot pending"]
+      end
+      srv_cls = srv_stats.any? { |c, _| c == "bad"  } ? "bad"  :
+                srv_stats.any? { |c, _| c == "warn" } ? "warn" : "ok"
+
       html << %(<div class="section-label">Server</div>)
-      html << %(<div class="card ok"><div class="card-header"><span class="card-title">Server Info</span></div><div class="subitems">)
+      html << %(<div class="card #{srv_cls}"><div class="card-header"><span class="card-title">Server Info</span></div><div class="subitems">)
 
       if server["os_name"]
         html << <<~HTML
@@ -178,7 +189,16 @@ if cgi.params.key?("content")
         HTML
       end
 
-      html << %(</div></div>)
+      html << %(</div>)
+
+      if srv_stats.any?
+        srv_stats_html = srv_stats.map { |c, txt|
+          %(<span class="stat #{c}">#{CGI.escapeHTML(txt)}</span>)
+        }.join
+        html << %(<div class="drive-stats" style="margin-top:0.45rem;padding:0 0.6rem;">#{srv_stats_html}</div>)
+      end
+
+      html << %(</div>)
     end
 
     if filesystems.any?