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fix(deep-link): unregister must refresh the database

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This commit is contained in:
Lucas Nogueira
2026-09-22 22:03:02 -03:00
parent 710d097b6b
commit 4a94356386
3 changed files with 67 additions and 33 deletions
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plugins/deep-link/src/lib.rs
+47 -11
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@@ -148,7 +148,7 @@ mod imp {
///
/// ## Platform-specific:
///
/// - **Linux**: Can only unregister the scheme if it was initially registered with [`register`](`Self::register`). May not work on older distros.
/// - **Linux**: Can only unregister the scheme if it was initially registered with [`register`](`Self::register`). Needs the `update-desktop-database` command available on the system. May not work on older distros.
/// - **macOS / Android / iOS**: Unsupported, will return [`Error::UnsupportedPlatform`](`crate::Error::UnsupportedPlatform`).
pub fn unregister<S: AsRef<str>>(&self, _protocol: S) -> crate::Result<()> {
Err(crate::Error::UnsupportedPlatform)
@@ -383,7 +383,7 @@ mod imp {
///
/// - **Windows**: Requires admin rights if the protocol is registered on local machine
/// (this can happen when registered from the NSIS installer when the install mode is set to both or per machine)
/// - **Linux**: Can only unregister the scheme if it was initially registered with [`register`](`Self::register`). May not work on older distros.
/// - **Linux**: Can only unregister the scheme if it was initially registered with [`register`](`Self::register`). Refreshes the desktop database with the `update-desktop-database` command; without it, [`is_registered`](`Self::is_registered`) may keep returning `true`. May not work on older distros.
/// - **macOS / Android / iOS**: Unsupported, will return [`Error::UnsupportedPlatform`](`crate::Error::UnsupportedPlatform`).
pub fn unregister<S: AsRef<str>>(&self, _protocol: S) -> crate::Result<()> {
#[cfg(windows)]
@@ -401,9 +401,6 @@ mod imp {
#[cfg(target_os = "linux")]
{
let mimeapps_path = self.app.path().config_dir()?.join("mimeapps.list");
let mut mimeapps = ini::Ini::load_from_file(&mimeapps_path)?;
let file_name = format!(
"{}-handler.desktop",
tauri::utils::platform::current_exe()?
@@ -411,16 +408,55 @@ mod imp {
.unwrap()
.to_string_lossy()
);
let mime_type = format!("x-scheme-handler/{}", _protocol.as_ref());
if let Some(section) = mimeapps.section_mut(Some("Default Applications")) {
let scheme = format!("x-scheme-handler/{}", _protocol.as_ref());
if section.get(&scheme).unwrap_or_default() == file_name {
section.remove(scheme);
// stop being the default handler
let mimeapps_path = self.app.path().config_dir()?.join("mimeapps.list");
if mimeapps_path.exists() {
let mut mimeapps = ini::Ini::load_from_file(&mimeapps_path)?;
if let Some(section) = mimeapps.section_mut(Some("Default Applications")) {
if section.get(&mime_type).unwrap_or_default() == file_name {
section.remove(&mime_type);
}
}
mimeapps.write_to_file(&mimeapps_path)?;
}
mimeapps.write_to_file(mimeapps_path)?;
// Stop declaring the scheme in the handler's `.desktop` file too: the desktop
// database indexes it, and with no default set `xdg-mime` falls back to that
// index, so the app would otherwise still be the handler.
let applications = self.app.path().data_dir()?.join("applications");
let desktop_file_path = applications.join(&file_name);
// Only the `MimeType` key is touched: the file may carry other changes.
if let Ok(mut desktop_file) = ini::Ini::load_from_file(&desktop_file_path) {
if let Some(section) = desktop_file.section_mut(Some("Desktop Entry")) {
let mime_types = section
.get("MimeType")
.unwrap_or_default()
.split(';')
.filter(|mime| !mime.is_empty() && *mime != mime_type)
.map(ToString::to_string)
.collect::<Vec<_>>();
if mime_types.is_empty() {
section.remove("MimeType");
} else {
section.insert("MimeType", mime_types.join(";"));
}
}
desktop_file.write_to_file(&desktop_file_path)?;
// Without the refreshed index `xdg-mime` may keep reporting the app as the
// handler, but the scheme is unregistered as far as the app can tell, so a
// missing command is not an error.
if let Err(e) = Command::new("update-desktop-database")
.arg(&applications)
.status()
{
tracing::warn!(
"Failed to run OS command `update-desktop-database`, the desktop database may still list the app as the `{mime_type}` handler: {e}"
);
}
}
Ok(())
}