web: add a session timeout field to the Services card

Adds a numeric input next to the syslog settings to read and set the
session timeout without knowing the command. The current value is
reported in information.json, so the field also shows the default the
firmware was built with.

Costs 86 bytes of code (BANK1) and nothing in RAM.

html/app.js

@@ -71,8 +71,9 @@ bw_title:"Bandwidth limits",bw_h:"Mbit/s, 0.016-10000",bw_in:"Ingress limit",bw_
 bw_exceed:"When exceeded",bw_fc:"Flow control",bw_drop:"Drop",
 bw_in_err:"Ingress limit must be 0.016-10000 Mbit/s",bw_out_err:"Egress limit must be 0.016-10000 Mbit/s",
 sy_network:"Network",sy_dhcp:"Use DHCP",sy_dhcp_t:"Request address via DHCP",sy_services:"Services",
-sy_igmp:"IGMP snooping",sy_sysip:"server IP",sy_server:"Server",sy_port:"Port",
-sy_services_note:"Service state reflects the startup config; runtime state is not readable.",
+  sy_igmp:"IGMP snooping",sy_sysip:"server IP",sy_server:"Server",sy_port:"Port",sy_sesstmo:"Session timeout (s)",
+  sy_services_note:"Service state reflects the startup config; runtime state is not readable.",
+  sy_sesstmo_err:"Session timeout must be 1-65535 s",
 sy_password:"Admin password",sy_newpw:"New password",sy_repeat:"Repeat",sy_pwapply:"Change password",
 sy_pw_note:"Takes effect immediately; save to flash to keep it after reboot.",sy_console:"Console",
 sy_cmd:"CLI command...",sy_send:"Send",sy_startup:"Startup configuration",sy_replayed:"replayed on every boot",
@@ -182,8 +183,9 @@ bw_title:"帯域制限",bw_h:"Mbit/s、0.016〜10000",bw_in:"入力制限",bw_ou
 bw_exceed:"超過時の動作",bw_fc:"フロー制御",bw_drop:"破棄",
 bw_in_err:"入力制限は 0.016〜10000 Mbit/s の範囲で指定してください",bw_out_err:"出力制限は 0.016〜10000 Mbit/s の範囲で指定してください",
 sy_network:"ネットワーク",sy_dhcp:"DHCP を使用",sy_dhcp_t:"DHCP でアドレスを取得",sy_services:"サービス",
-sy_igmp:"IGMP スヌーピング",sy_sysip:"サーバー IP",sy_server:"サーバー",sy_port:"ポート",
-sy_services_note:"サービスの状態は起動設定を反映しています。実行時の状態は読み取れません。",
+  sy_igmp:"IGMP スヌーピング",sy_sysip:"サーバー IP",sy_server:"サーバー",sy_port:"ポート",sy_sesstmo:"セッションタイムアウト (秒)",
+  sy_services_note:"サービスの状態は起動設定を反映しています。実行時の状態は読み取れません。",
+  sy_sesstmo_err:"セッションタイムアウトは 1〜65535 秒で指定してください",
 sy_password:"管理者パスワード",sy_newpw:"新しいパスワード",sy_repeat:"再入力",sy_pwapply:"パスワードを変更",
 sy_pw_note:"即時に反映されます。再起動後も保持するにはフラッシュに保存してください。",sy_console:"コンソール",
 sy_cmd:"CLI コマンド...",sy_send:"送信",sy_startup:"起動設定",sy_replayed:"起動のたびに再実行されます",
@@ -293,8 +295,9 @@ bw_title:"带宽限制",bw_h:"Mbit/s，0.016-10000",bw_in:"入方向限速",bw_o
 bw_exceed:"超限动作",bw_fc:"流量控制",bw_drop:"丢弃",
 bw_in_err:"入方向限速范围为 0.016-10000 Mbit/s",bw_out_err:"出方向限速范围为 0.016-10000 Mbit/s",
 sy_network:"网络",sy_dhcp:"使用 DHCP",sy_dhcp_t:"通过 DHCP 获取地址",sy_services:"服务",
-sy_igmp:"IGMP 侦听",sy_sysip:"服务器 IP",sy_server:"服务器",sy_port:"端口",
-sy_services_note:"服务状态反映启动配置；运行时状态无法读取。",
+  sy_igmp:"IGMP 侦听",sy_sysip:"服务器 IP",sy_server:"服务器",sy_port:"端口",sy_sesstmo:"会话超时（秒）",
+  sy_services_note:"服务状态反映启动配置；运行时状态无法读取。",
+  sy_sesstmo_err:"会话超时必须为 1-65535 秒",
 sy_password:"管理员密码",sy_newpw:"新密码",sy_repeat:"重复输入",sy_pwapply:"修改密码",
 sy_pw_note:"立即生效；如需重启后保留请保存到 Flash。",sy_console:"控制台",
 sy_cmd:"CLI 命令...",sy_send:"发送",sy_startup:"启动配置",sy_replayed:"每次启动时重新执行",
@@ -1503,6 +1506,7 @@ function sysLoad(){
     var sl=(S.info.syslog_server||"").split(":");
     if(sl[0]&&sl[0]!=="0.0.0.0")$("sy-sysip").value=sl[0];
     if(sl[1])$("sy-sysport").value=sl[1];
+    if(S.info.session_timeout)$("sy-sesstmo").value=S.info.session_timeout;
   }).catch(function(){});
   cfgReload();
 }
@@ -1555,6 +1559,11 @@ $("sy-syslog").addEventListener("change",function(){
   }else cmds.push("syslog off");
   postCmds(cmds).catch(function(){});
 });
+$("sy-sesstmo").addEventListener("change",function(){
+  var v=+this.value;
+  if(!(v>=1&&v<=65535)){toast(t("sy_sesstmo_err"),"err");sysLoad();return;}
+  postCmd("session "+v).catch(function(){sysLoad()});
+});
 $("sy-pwapply").addEventListener("click",function(){
   var a=$("sy-pw1").value,b=$("sy-pw2").value;
   if(a.length<1||a.length>20){toast(t("sy_pw_len"),"err");return;}

html/index.html

@@ -375,6 +375,8 @@ button.danger{background:var(--bad);color:#fff;border-color:transparent}
             <input class="in" id="sy-sysip" style="flex:1;min-width:0;width:0" data-i18n-p="sy_sysip">
             <span class="small mut" data-i18n="sy_port">Port</span>
             <input class="in" id="sy-sysport" style="width:64px" type="number" min="1" max="65535"></div>
+          <label class="row" style="justify-content:space-between"><span data-i18n="sy_sesstmo">Session timeout (s)</span>
+            <input class="in" id="sy-sesstmo" style="width:80px" type="number" min="1" max="65535"></label>
           <p class="small mut" data-i18n="sy_services_note">Service state reflects the startup config; runtime state is not readable.</p>
         </div>
         <div class="card"><h2 data-i18n="sy_password">Admin password</h2>