From fa7e7c5d1202cdb82f6b9c0c45402bff953efb24 Mon Sep 17 00:00:00 2001
From: Sebastian Hildebrandt <hildebrandt@plus-innovations.com>
Date: Sun, 13 Jan 2019 14:36:22 +0100
Subject: [PATCH] graphics() raspian detection

---
 README.md       |  4 +--
 docs/os.html    |  4 +--
 lib/graphics.js | 65 +++++++++++++++++++++++++++++++++++++------------
 lib/util.js     | 31 +++++++++++++++++++++++
 4 files changed, 84 insertions(+), 20 deletions(-)

diff --git a/README.md b/README.md
index 9dc12b7..e2bd25a 100644
--- a/README.md
+++ b/README.md
@@ -265,8 +265,8 @@ I also created a nice little command line tool called [mmon][mmon-github-url]  (
 | | hostname | X | X | X | X | X | same as os.hostname() |
 | | codepage | X | X | X | X |   | OS build version |
 | | logofile | X | X | X | X | X | e.g. 'apple', 'debian', 'fedora', ... |
-| | serial |   | X | X | X |   | OS/Host serial number |
-| | build |   |   | X | X |   | OS build version |
+| | serial | X | X | X | X |   | OS/Host serial number |
+| | build | X |   | X | X |   | OS build version |
 | si.uuid(cb) | {...} | X | X | X | X | X | object of several UUIDs |
 | | os | X | X | X | X |  | os specific UUID |
 | si.versions(cb) | {...} | X | X | X | X | X | version information (kernel, ssl, node, ...) |
diff --git a/docs/os.html b/docs/os.html
index f64bdb2..dba7b22 100644
--- a/docs/os.html
+++ b/docs/os.html
@@ -161,7 +161,7 @@
                   <tr>
                     <td></td>
                     <td>serial</td>
-                    <td></td>
+                    <td>X</td>
                     <td>X</td>
                     <td>X</td>
                     <td>X</td>
@@ -171,7 +171,7 @@
                   <tr>
                     <td></td>
                     <td>build</td>
-                    <td></td>
+                    <td>X</td>
                     <td></td>
                     <td>X</td>
                     <td>X</td>
diff --git a/lib/graphics.js b/lib/graphics.js
index 5122497..a956ae3 100644
--- a/lib/graphics.js
+++ b/lib/graphics.js
@@ -396,32 +396,65 @@ function graphics(callback) {
         });
       }
       if (_linux) {
-        let cmd = 'lspci -vvv  2>/dev/null';
-        exec(cmd, function (error, stdout) {
-          if (!error) {
-            let lines = stdout.toString().split('\n');
-            result.controllers = parseLinesLinuxControllers(lines);
-          }
-          let cmd = 'xdpyinfo 2>/dev/null | grep \'depth of root window\' | awk \'{ print $5 }\'';
+        // Raspberry: https://elinux.org/RPI_vcgencmd_usage
+        if (util.isRaspberry() && util.isRaspbian()) {
+          let cmd = 'fbset -s | grep \'mode "\'; vcgencmd get_mem gpu; tvservice -s; tvservice -n;';
+          exec(cmd, function (error, stdout) {
+            let lines = stdout.toString().split('\n');
+            if (lines.length > 3 && lines[0].indexOf('mode "' >= -1)) {
+              const parts = lines[0].replace('mode', '').replace(/"/g, '').trim().split('x');
+              if (parts.length === 2) {
+                push({
+                  model: getValue(lines, 'device_name', '='),
+                  main: true,
+                  builtin: false,
+                  connection: 'HDMI',
+                  sizex: -1,
+                  sizey: -1,
+                  pixeldepth: -1,
+                  resolutionx: parseInt(parts[0], 10),
+                  resolutiony: parseInt(parts[1], 10)
+                })
+              }
+            }
+            if (lines.length > 1 && lines[1].indexOf('gpu=' >= -1) {
+              push({
+                vendor: 'Broadcom',
+                model: 'VideoCore IV',
+                bus: '',
+                vram: lines[1].replace('gpu=', ''),
+                vramDynamic: true
+              })
+            }
+          });
+        } else {
+          let cmd = 'lspci -vvv  2>/dev/null';
           exec(cmd, function (error, stdout) {
-            let depth = 0;
             if (!error) {
               let lines = stdout.toString().split('\n');
-              depth = parseInt(lines[0]) || 0;
+              result.controllers = parseLinesLinuxControllers(lines);
             }
-            let cmd = 'xrandr --verbose 2>/dev/null';
+            let cmd = 'xdpyinfo 2>/dev/null | grep \'depth of root window\' | awk \'{ print $5 }\'';
             exec(cmd, function (error, stdout) {
+              let depth = 0;
               if (!error) {
                 let lines = stdout.toString().split('\n');
-                result.displays = parseLinesLinuxDisplays(lines, depth);
+                depth = parseInt(lines[0]) || 0;
               }
-              if (callback) {
-                callback(result);
-              }
-              resolve(result);
+              let cmd = 'xrandr --verbose 2>/dev/null';
+              exec(cmd, function (error, stdout) {
+                if (!error) {
+                  let lines = stdout.toString().split('\n');
+                  result.displays = parseLinesLinuxDisplays(lines, depth);
+                }
+                if (callback) {
+                  callback(result);
+                }
+                resolve(result);
+              });
             });
           });
-        });
+        }
       }
       if (_freebsd || _openbsd) {
         if (callback) { callback(result); }
diff --git a/lib/util.js b/lib/util.js
index 5cc5c1e..bdf4394 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -275,6 +275,35 @@ function getCodepage() {
   }
 }
 
+function isRaspberry() {
+  const PI_MODEL_NO = [
+    'BCM2708',
+    'BCM2709',
+    'BCM2710',
+    'BCM2835',
+    'BCM2837B0'
+  ];
+  let cpuinfo = [];
+  try {
+    cpuinfo = fs.readFileSync('/proc/cpuinfo', { encoding: 'utf8' }).split('\n');
+  } catch (e) {
+    return false;
+  };
+  const hardware = getValue(cpuinfo, 'hardware');
+  return (PI_MODEL_NO.indexOf(hardware) >= -1)
+}
+
+function isRaspbian() {
+  let osrelease = [];
+  try {
+    osrelease = fs.readFileSync('/etc/os-release', { encoding: 'utf8' }).split('\n');
+  } catch (e) {
+    return false;
+  };
+  const id = getValue(cpuinfo, 'id');
+  return (id.indexOf('raspbian') >= -1)
+}
+
 function execWin(cmd, opts, callback) {
   if (!callback) {
     callback = opts;
@@ -325,3 +354,5 @@ exports.powerShell = powerShell;
 exports.nanoSeconds = nanoSeconds;
 exports.countUniqueLines = countUniqueLines;
 exports.noop = noop;
+exports.isRaspberry = isRaspberry;
+exports.isRaspbian = isRaspbian;