From 3480c52859aeba5d18797d5fd51276cba477ad63 Mon Sep 17 00:00:00 2001
From: Jannik Schönartz
Date: Tue, 28 Sep 2021 19:43:28 +0200
Subject: [bas-hw-collect] Add CD/DVD information

---
 .../bas-hw-collect/scripts/collect_hw_info_json.py | 45 +++++++++++++++++++++-
 1 file changed, 43 insertions(+), 2 deletions(-)

diff --git a/modules.d/bas-hw-collect/scripts/collect_hw_info_json.py b/modules.d/bas-hw-collect/scripts/collect_hw_info_json.py
index ea02c3ae..4e4a4f39 100755
--- a/modules.d/bas-hw-collect/scripts/collect_hw_info_json.py
+++ b/modules.d/bas-hw-collect/scripts/collect_hw_info_json.py
@@ -3,6 +3,7 @@ from subprocess import PIPE
 from os import listdir, path
 import argparse
 import json
+import re
 import requests
 import shlex
 import subprocess
@@ -85,24 +86,64 @@ def get_lsblk(disk_path, disk_name):
     lsblk = parse_to_json('lsblk', output)
     return lsblk
 
+# Get CD/DVD Information
+def get_cdrom():
+    cdromdir = '/proc/sys/dev/cdrom/'
+    cdrom = []
+    if path.exists(cdromdir):
+        cdrom_raw = run_subprocess('cat ' + cdromdir + 'info')
+
+        # Skip first two entries because of useless information and empty row
+        for row in cdrom_raw.split('\n')[2:]:
+            if row == '':
+                continue
+            # Split at one or more tabs
+            values = re.split('\t+', row)
+            key = values[0][:-1].replace('drive ', '').replace(' ', '_')
+            for index, val in enumerate(values[1:]):
+                if len(cdrom) < index + 1:
+                    cdrom.append({ 'read': [], 'write': [], 'functions': [] })
+
+                if 'Can_read_' in key:
+                    if val == '1':
+                        cdrom[index]['read'].append(key[9:])
+                elif 'Can_write_' in key:
+                    cdrom[index]['write'].append(key[10:])
+                elif 'Can_' in key:
+                    cdrom[index]['functions'].append(key[4:])
+                else:
+                    cdrom[index][key] = val
+    return {cd['name']:cd for cd in cdrom}
+
 # Get informations about the disks
 def get_disk_info():
     diskdir = '/dev/disk/by-path/'
     disk_informations = {}
+    cdrom = get_cdrom()
 
     # Get and filter all disks
     if path.exists(diskdir):
         disks = listdir(diskdir)
-        filtered_disks = [i for i in disks if (not "-part" in i) and (not "-usb-" in i)]
+        filtered_disks = [i for i in disks if (not '-part' in i) and (not '-usb-' in i)]
 
         # Call all disk specific tools
         for d in filtered_disks:
             disk_path = diskdir + d
             disk_info = {}
             disk_info['readlink']   = get_readlink(disk_path).rstrip()
+
+            # Check if it's a cd/dvd
+            if disk_info['readlink'].split('/')[-1] in cdrom.keys():
+                disk_info['type'] = 'cdrom'
+                disk_info['info'] = cdrom[disk_info['readlink'].split('/')[-1]]
+            else:
+                disk_info['type'] = 'drive'
             disk_info['smartctl']   = get_smartctl(diskdir, d)
-            disk_info['sfdisk']     = get_sfdisk(diskdir, d)
             disk_info['lsblk']      = get_lsblk(diskdir, d)
+
+            if disk_info['type'] != 'cdrom':
+                disk_info['sfdisk']     = get_sfdisk(diskdir, d)
+
             disk_informations[d]    = disk_info
     return disk_informations
 
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