src: verify the fields of the efibootmgr json in /refresh

Don't send the efi data in the /refresh payload if efibootmgr
is missing any of the json keys.

Log the missing keys in case of missing some.

1 files changed, 27 insertions, 4 deletions

diff --git a/src/utils/uefi.py b/src/utils/uefi.py
index 5ca8270..c0bc958 100644
--- a/src/utils/uefi.py
+++ b/src/utils/uefi.py
@@ -54,21 +54,44 @@ def _check_efibootmgr_json():
 def is_uefi_supported():
     return os.path.exists("/sys/firmware/efi")
 
+def _validate_efibootmgr_json(dict_json):
+    missing_fields = []
+    if not 'BootOrder' in dict_json:
+        missing_fields.append('BootOrder')
 
-def run_efibootmgr_json():
+    if not 'vars' in dict_json:
+        missing_fields.append('vars')
+
+    for i, entry in enumerate(dict_json.get('vars', [])):
+        if not 'name' in entry:
+            missing_fields.append(f'vars[{i}].name')
+
+        if not 'active' in entry:
+            missing_fields.append('vars[{i}].active')
+
+        if not 'description' in entry:
+            missing_fields.append('vars[{i}].description')
+
+    if missing_fields:
+        raise OgError('Missing required efibootmgr fields: ' + ', '.join(missing_fields))
+
+def run_efibootmgr_json(validate):
     if _check_efibootmgr_json() is False:
         raise OgError(f'{EFIBOOTMGR_BIN} not available')
 
     proc = subprocess.run([EFIBOOTMGR_BIN, '--json'], capture_output=True, text=True)
     dict_json = json.loads(proc.stdout)
 
+    if validate:
+        _validate_efibootmgr_json(dict_json)
+
     return dict_json
 
 
 def efibootmgr_bootnext(description):
     logging.info(f'Setting BootNext to value from boot entry with label {description}')
     bootnext_cmd = '{efibootmgr} -n {bootnum}'
-    boot_entries = run_efibootmgr_json().get('vars', [])
+    boot_entries = run_efibootmgr_json(validate=False).get('vars', [])
 
     entry = _find_bootentry(boot_entries, description)
     num = _strip_boot_prefix(entry)  # efibootmgr output uses BootXXXX for each entry, remove the "Boot" prefix.
@@ -78,7 +101,7 @@ def efibootmgr_bootnext(description):
 
 
 def efibootmgr_delete_bootentry(label):
-    dict_json = run_efibootmgr_json()
+    dict_json = run_efibootmgr_json(validate=False)
     efibootmgr_cmd = '{efibootmgr} -q -b {bootnum} -B'
 
     for entry in dict_json.get('vars', []):
@@ -92,7 +115,7 @@ def efibootmgr_delete_bootentry(label):
 
 
 def efibootmgr_create_bootentry(disk, part, loader, label, add_to_bootorder=True):
-    entries = run_efibootmgr_json().get('vars', [])
+    entries = run_efibootmgr_json(validate=False).get('vars', [])
     create_opt = '-c' if add_to_bootorder else '-C'
     index_opt = f'-I {len(entries)}'  # Requires efibootmgr version 18
     efibootmgr_cmd = f'{EFIBOOTMGR_BIN} {create_opt} {index_opt} -d {disk} -p {part} -L {label} -l {loader}'