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Remove old config copies from updates

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Settings -> Upkeep -> Backup & restore lists the config.json.bak-* files
that update leaves behind and removes one or all of them; they hold the
same secrets as a backup. Removing needs a signed-in user and is logged.
After a successful update only the newest 3 copies are kept, and a copy
that would overwrite an older one (version unknown, or the same version
twice) gets the time appended. The backup card now also names preshared
keys and authenticator app secrets.

The update notice uses the existing compareVersions instead of its own.
This commit is contained in:
Daniel Redetzke
2026-10-05 12:34:22 +03:00
parent 95bb95cecd
commit 32d5621cf4
8 changed files with 264 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files
README.md
+3 -1
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@@ -182,7 +182,7 @@ the running service.
| Command | What it does |
|---|---|
| `GHOSTWIRE install [-domain d] [-email e] [-endpoint h] [-port p] [-y]` | Sets up and starts the service, as above. Asks for the settings no flag gave; `-y` never asks. |
| `GHOSTWIRE update [-force]` | Run from the new binary, e.g. `sudo /tmp/GHOSTWIRE update`. Checks that it can read the current `config.json` (nothing changes if not), backs up the config to `config.json.bak-<old version>`, replaces the binary, updates the unit if needed and restarts. If the new version does not stay up, the old binary and config are put back and restarted. It refuses older versions without `-force`. |
| `GHOSTWIRE update [-force]` | Run from the new binary, e.g. `sudo /tmp/GHOSTWIRE update`. Checks that it can read the current `config.json` (nothing changes if not), backs up the config to `config.json.bak-<old version>` (keeping the newest 3 such copies), replaces the binary, updates the unit if needed and restarts. If the new version does not stay up, the old binary and config are put back and restarted. It refuses older versions without `-force`. |
| `GHOSTWIRE uninstall [-purge] [-y]` | Stops and removes the service, `wg0` and the firewall table. `-purge` also deletes `/opt/ghostwire` and the user. |
| `GHOSTWIRE passwd [username]` | Sets a user's password (default: the first user) and reloads the running service. The way back in if you are locked out. |
| `GHOSTWIRE version` | Prints the version. |
@@ -224,6 +224,7 @@ After editing `config.json` by hand, run `sudo systemctl reload ghostwire`.
|---|---|
| `GHOSTWIRE` | the program |
| `config.json` | all settings, server key, peers, pending setup links with their PINs, user password hashes, authenticator app secrets, passkeys, recovery code and token hashes (0600) |
| `config.json.bak-*` | copies of `config.json` made by `update`; the newest 3 are kept, and Settings → Upkeep lists and removes them |
| `stats.json` | traffic and connection history per peer |
| `geo-country.mmdb`, `geo-asn.mmdb` | DB-IP Lite databases for country and network lookups |
| `GHOSTWIRE.jsonl` | log, one JSON object per line. Changes carry `"audit":true` |
@@ -273,6 +274,7 @@ GET /peers/{id}/setup (not read-only) DELETE /peers/{id}/setup
GET /settings PATCH /settings POST /restart POST /updates/check
GET /logs?level=&limit=&audit=1 GET /logs/download
signed in: GET|POST /tokens · DELETE /tokens/{id} · GET /backup · POST /restore
signed in: GET|DELETE /update-backups · DELETE /update-backups/{name} (config copies made by update)
public: GET /setup/{token} · POST /setup/{token} {"pin"} (what a setup link opens)
```