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# Remotes
## Vendor Firmware
These are the steps to add vendor firmware that is installed as part of an embedded image such as an OSTree or ChromeOS image:
* Compile with `-Dvendor_metadata=true` to install `/etc/fwupd/remotes.d/vendor.conf`
* Change `/etc/fwupd/remotes.d/vendor.conf` to have `Enabled=true`
* Change `/etc/fwupd/remotes.d/vendor.conf` to have the correct `Title`
* Deploy the firmware to `/usr/share/fwupd/remotes.d/vendor/firmware`
* Deploy the metadata to `/usr/share/fwupd/remotes.d/vendor/vendor.xml.gz`
The metadata should be of the form:
<?xml version="1.0" encoding="UTF-8"?>
<components version="0.9">
<component type="firmware">
<id>FIXME.firmware</id>
<name>FIXME</name>
<summary>FIXME</summary>
<developer_name>FIXME</developer_name>
<project_license>FIXME</project_license>
<description><p>FIXME</p></description>
<url type="homepage">http://FIXME</url>
<releases>
<release version="FIXME" date="2017-07-27" urgency="high">
<size type="installed">86406</size>
<location>firmware/FIXME.cab</location>
<checksum filename="FIXME.hex" target="content" type="sha1">96a92915c9ebaf3dd232cfc7dcc41c1c6f942877</checksum>
<description><p>FIXME.</p></description>
</release>
</releases>
<provides>
<firmware type="flashed">FIXME</firmware>
</provides>
</component>
</components>
The metadata and firmware should be signed using Jcat, ensuring the
signing certificate is installed in the `/etc/pki/fwupd` location.
## Automatic metadata generation
`fwupd` and `fwupdtool` support automatically generating metadata for a remote
by configuring it to be a *directory* type. This is very convenient if you want to dynamically add firmware from multiple packages while generating the image but there are a few deficiencies:
* There will be a performance impact of starting the daemon or tool measured by O(# CAB files)
* It's not possible to verify metadata signature and any file validation should be part of the image validation.
To enable this:
* Change `/etc/fwupd/remotes.d/vendor-directory.conf` to have `Enabled=true`
* Change `/etc/fwupd/remotes.d/vendor-directory.conf` to have the correct `Title`
* Deploy the firmware to `/usr/share/fwupd/remotes.d/vendor/firmware`
* Change `MetadataURI` to that of the directory (Eg `/usr/share/fwupd/remotes.d/vendor/`)
## Mirroring a Repository
The upstream LVFS instance will output a relative URL for firmware files, e.g.
`<location>bar.cab</location>` instead of an absolute URI location, e.g.
`<location>http://foo/bar.cab</location>`.
When setting up a mirror of the LVFS onto another CDN you just need to change
the `MetadataURI` to your local mirror and firmware downloads will use the
relative URI.