Files
truenas-truecloud-patch/patch/patch_ui.py
T
flan cbd85af2a3 Fix six quality findings from iterative code review
- patch_ui.py: find_bundle now matches MARKER so already-patched files
  return early and print 'UI already patched' instead of the misleading
  'filterByProviders pattern not found' warning
- install.sh: scope warning grep to current run only (record log offset
  before apply.sh, tail -c +N to read only new bytes)
- install.sh: fix misleading 'before continuing' wording on warning banner
- install.sh: fix grep anchor (^WARNING: missed [truecloud-patch] WARNING: lines)
- uninstall.sh: add import-middlewared verification after Python detection,
  matching apply.sh fallback logic
2026-06-15 15:53:06 +00:00

131 lines
4.1 KiB
Python

#!/usr/bin/env python3
"""
Patches the TrueNAS webui Angular bundle to show S3 and B2 credentials
in the TrueCloud Backup task form, instead of Storj only.
Angular's Ivy compiler inlines TypeScript string enum values as literals in
the compiled bundle, so the template binding:
[filterByProviders]="[CloudSyncProviderName.Storj]"
appears verbatim in the minified JS as:
"filterByProviders",["STORJ_IX"]
We replace that array to include S3 and B2. The file is backed up before
modification so uninstall.sh can restore it.
Safe to run multiple times — a marker string detects an already-patched file.
Exits 0 in all cases (warnings are printed to stdout and logged by apply.sh).
"""
import os
import re
import shutil
WEBUI_CANDIDATES = [
"/usr/share/truenas/webui",
"/usr/share/truenas-ui",
"/var/www/truenas",
]
# Angular's Ivy template compiler serialises the Storj-only filter as this
# exact substring in every production build we've observed.
FIND = re.compile(r'("filterByProviders",)\["STORJ_IX"\]')
REPLACE = r'\1["STORJ_IX","S3","B2"]'
# A patched file contains both "S3" and "B2" next to "STORJ_IX" in this form.
# This string is specific enough not to appear elsewhere in the bundle.
MARKER = '"STORJ_IX","S3","B2"'
def find_bundle():
"""
Search WEBUI_CANDIDATES for the JS bundle containing the filterByProviders
binding. Returns (webui_dir, path, content). webui_dir is None if no
candidate directory exists; path is None if the directory exists but the
pattern is not found in any bundle.
"""
webui = next((d for d in WEBUI_CANDIDATES if os.path.isdir(d)), None)
if webui is None:
return None, None, None
for root, _dirs, names in os.walk(webui):
for name in sorted(names): # deterministic order
if not name.endswith(".js"):
continue
path = os.path.join(root, name)
try:
with open(path, encoding="utf-8", errors="replace") as fh:
content = fh.read()
if FIND.search(content) or MARKER in content:
return webui, path, content
except OSError:
continue
return webui, None, None
def main():
webui, path, content = find_bundle()
if webui is None:
print(
"[truecloud-patch] WARNING: webui directory not found; skipping UI patch.\n"
"[truecloud-patch] Searched: " + ", ".join(WEBUI_CANDIDATES)
)
return
if path is None:
print(
"[truecloud-patch] WARNING: filterByProviders pattern not found in any JS bundle.\n"
"[truecloud-patch] The TrueNAS webui may have been restructured in this version.\n"
"[truecloud-patch] File an issue at https://github.com/sudolulo/truenas-truecloud-patch\n"
f"[truecloud-patch] TrueNAS version info: {_tnversion()}"
)
return
if MARKER in content:
print(f"[truecloud-patch] UI already patched: {path}")
return
backup = path + ".pre-truecloud-patch"
if not os.path.exists(backup):
shutil.copy2(path, backup)
patched, count = FIND.subn(REPLACE, content)
if count != 1:
print(
f"[truecloud-patch] WARNING: {count} replacement(s) in {path}; "
f"expected exactly 1 — skipping write to avoid corrupting the bundle.\n"
f"[truecloud-patch] File an issue at "
f"https://github.com/sudolulo/truenas-truecloud-patch"
)
return
tmp = path + ".tmp"
try:
with open(tmp, "w", encoding="utf-8") as fh:
fh.write(patched)
os.replace(tmp, path)
except OSError as exc:
print(f"[truecloud-patch] ERROR: Could not write {path}: {exc}")
try:
os.unlink(tmp)
except OSError:
pass
return
print(f"[truecloud-patch] UI bundle patched ({count} replacement(s)): {path}")
def _tnversion():
try:
with open("/etc/version") as fh:
return fh.read().strip()
except OSError:
return "unknown"
if __name__ == "__main__":
main()