fix(core): Correctly detect Android Tauri configuration file, closes #7785 (#7802)

Co-authored-by: Lucas Nogueira <lucas@tauri.studio>

Author: i-c-b

.changes/cli-config-target-mobile.md

@@ -0,0 +1,6 @@
+---
+"tauri-cli": patch:bug
+"@tauri-apps/cli": patch:bug
+---
+
+Properly read platform-specific configuration files for mobile targets.

.changes/codegen-target-from-utils.md

@@ -0,0 +1,6 @@
+---
+"tauri-codegen": patch:enhance
+"tauri-macros": patch:enhance
+---
+
+Use `Target` enum from `tauri_utils::platform`.

.changes/mobile-config-naming-conventions.md

@@ -0,0 +1,5 @@
+---
+"tauri-utils": patch:breaking
+---
+
+Follow file name conventions set by desktop for mobile Tauri configuration files. Added `target` argument on most `config::parse` methods.

core/tauri-build/src/lib.rs

@@ -294,6 +294,7 @@ pub fn try_build(attributes: Attributes) -> Result<()> {
   cfg_alias("mobile", mobile);
 
   let mut config = serde_json::from_value(tauri_utils::config::parse::read_from(
+    tauri_utils::platform::Target::from_triple(&std::env::var("TARGET").unwrap()),
     std::env::current_dir().unwrap(),
   )?)?;
   if let Ok(env) = std::env::var("TAURI_CONFIG") {

core/tauri-codegen/src/context.rs

@@ -15,6 +15,7 @@ use tauri_utils::config::{AppUrl, Config, PatternKind, WindowUrl};
 use tauri_utils::html::{
   inject_nonce_token, parse as parse_html, serialize_node as serialize_html_node,
 };
+use tauri_utils::platform::Target;
 
 use crate::embedded_assets::{AssetOptions, CspHashes, EmbeddedAssets, EmbeddedAssetsError};
 
@@ -112,26 +113,6 @@ fn map_isolation(
   }
 }
 
-#[derive(PartialEq, Eq, Clone, Copy)]
-enum Target {
-  Linux,
-  Windows,
-  Darwin,
-  Android,
-  // iOS.
-  Ios,
-}
-
-impl Target {
-  fn is_mobile(&self) -> bool {
-    matches!(self, Target::Android | Target::Ios)
-  }
-
-  fn is_desktop(&self) -> bool {
-    !self.is_mobile()
-  }
-}
-
 /// Build a `tauri::Context` for including in application code.
 pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsError> {
   let ContextData {
@@ -141,34 +122,11 @@ pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsE
     root,
   } = data;
 
-  let target =
-    if let Ok(target) = std::env::var("TARGET").or_else(|_| std::env::var("TAURI_TARGET_TRIPLE")) {
-      if target.contains("unknown-linux") {
-        Target::Linux
-      } else if target.contains("pc-windows") {
-        Target::Windows
-      } else if target.contains("apple-darwin") {
-        Target::Darwin
-      } else if target.contains("android") {
-        Target::Android
-      } else if target.contains("apple-ios") {
-        Target::Ios
-      } else {
-        panic!("unknown codegen target {target}");
-      }
-    } else if cfg!(target_os = "linux") {
-      Target::Linux
-    } else if cfg!(windows) {
-      Target::Windows
-    } else if cfg!(target_os = "macos") {
-      Target::Darwin
-    } else if cfg!(target_os = "android") {
-      Target::Android
-    } else if cfg!(target_os = "ios") {
-      Target::Ios
-    } else {
-      panic!("unknown codegen target")
-    };
+  let target = std::env::var("TARGET")
+    .or_else(|_| std::env::var("TAURI_TARGET_TRIPLE"))
+    .as_deref()
+    .map(Target::from_triple)
+    .unwrap_or_else(|_| Target::current());
 
   let mut options = AssetOptions::new(config.tauri.pattern.clone())
     .freeze_prototype(config.tauri.security.freeze_prototype)

core/tauri-codegen/src/lib.rs

@@ -67,7 +67,10 @@ pub fn get_config(path: &Path) -> Result<(Config, PathBuf), CodegenConfigError>
   // it is impossible for the content of two separate configs to get mixed up. The chances are
   // already unlikely unless the developer goes out of their way to run the cli on a different
   // project than the target crate.
-  let mut config = serde_json::from_value(tauri_utils::config::parse::read_from(parent.clone())?)?;
+  let mut config = serde_json::from_value(tauri_utils::config::parse::read_from(
+    tauri_utils::platform::Target::current(),
+    parent.clone(),
+  )?)?;
   if let Ok(env) = std::env::var("TAURI_CONFIG") {
     let merge_config: serde_json::Value =
       serde_json::from_str(&env).map_err(CodegenConfigError::FormatInline)?;

core/tauri-macros/src/context.rs

@@ -11,7 +11,7 @@ use syn::{
   LitStr, PathArguments, PathSegment, Token,
 };
 use tauri_codegen::{context_codegen, get_config, ContextData};
-use tauri_utils::config::parse::does_supported_file_name_exist;
+use tauri_utils::{config::parse::does_supported_file_name_exist, platform::Target};
 
 pub(crate) struct ContextItems {
   config_file: PathBuf,
@@ -20,6 +20,12 @@ pub(crate) struct ContextItems {
 
 impl Parse for ContextItems {
   fn parse(input: &ParseBuffer<'_>) -> syn::parse::Result<Self> {
+    let target = std::env::var("TARGET")
+      .or_else(|_| std::env::var("TAURI_TARGET_TRIPLE"))
+      .as_deref()
+      .map(Target::from_triple)
+      .unwrap_or_else(|_| Target::current());
+
     let config_file = if input.is_empty() {
       std::env::var("CARGO_MANIFEST_DIR").map(|m| PathBuf::from(m).join("tauri.conf.json"))
     } else {
@@ -36,7 +42,7 @@ impl Parse for ContextItems {
       VarError::NotUnicode(_) => "CARGO_MANIFEST_DIR env var contained invalid utf8".into(),
     })
     .and_then(|path| {
-      if does_supported_file_name_exist(&path) {
+      if does_supported_file_name_exist(target, &path) {
         Ok(path)
       } else {
         Err(format!(

core/tauri-utils/src/config/parse.rs

@@ -3,6 +3,7 @@
 // SPDX-License-Identifier: MIT
 
 use crate::config::Config;
+use crate::platform::Target;
 use json_patch::merge;
 use serde::de::DeserializeOwned;
 use serde_json::Value;
@@ -47,47 +48,29 @@ impl ConfigFormat {
     }
   }
 
-  fn into_platform_file_name(self) -> &'static str {
+  fn into_platform_file_name(self, target: Target) -> &'static str {
     match self {
-      Self::Json => {
-        if cfg!(target_os = "macos") {
-          "tauri.macos.conf.json"
-        } else if cfg!(windows) {
-          "tauri.windows.conf.json"
-        } else if cfg!(target_os = "android") {
-          "tauri.android.conf.json"
-        } else if cfg!(target_os = "ios") {
-          "tauri.ios.conf.json"
-        } else {
-          "tauri.linux.conf.json"
-        }
-      }
-      Self::Json5 => {
-        if cfg!(target_os = "macos") {
-          "tauri.macos.conf.json5"
-        } else if cfg!(windows) {
-          "tauri.windows.conf.json5"
-        } else if cfg!(target_os = "android") {
-          "tauri.android.conf.json"
-        } else if cfg!(target_os = "ios") {
-          "tauri.ios.conf.json"
-        } else {
-          "tauri.linux.conf.json5"
-        }
-      }
-      Self::Toml => {
-        if cfg!(target_os = "macos") {
-          "Tauri.macos.toml"
-        } else if cfg!(windows) {
-          "Tauri.windows.toml"
-        } else if cfg!(target_os = "android") {
-          "tauri.android.toml"
-        } else if cfg!(target_os = "ios") {
-          "tauri.ios.toml"
-        } else {
-          "Tauri.linux.toml"
-        }
-      }
+      Self::Json => match target {
+        Target::Darwin => "tauri.macos.conf.json",
+        Target::Windows => "tauri.windows.conf.json",
+        Target::Linux => "tauri.linux.conf.json",
+        Target::Android => "tauri.android.conf.json",
+        Target::Ios => "tauri.ios.conf.json",
+      },
+      Self::Json5 => match target {
+        Target::Darwin => "tauri.macos.conf.json5",
+        Target::Windows => "tauri.windows.conf.json5",
+        Target::Linux => "tauri.linux.conf.json5",
+        Target::Android => "tauri.android.conf.json5",
+        Target::Ios => "tauri.ios.conf.json5",
+      },
+      Self::Toml => match target {
+        Target::Darwin => "Tauri.macos.toml",
+        Target::Windows => "Tauri.windows.toml",
+        Target::Linux => "Tauri.linux.toml",
+        Target::Android => "Tauri.android.toml",
+        Target::Ios => "Tauri.ios.toml",
+      },
     }
   }
 }
@@ -154,28 +137,28 @@ pub enum ConfigError {
 }
 
 /// Determines if the given folder has a configuration file.
-pub fn folder_has_configuration_file(folder: &Path) -> bool {
+pub fn folder_has_configuration_file(target: Target, folder: &Path) -> bool {
   folder.join(ConfigFormat::Json.into_file_name()).exists()
       || folder.join(ConfigFormat::Json5.into_file_name()).exists()
       || folder.join(ConfigFormat::Toml.into_file_name()).exists()
        // platform file names
-       || folder.join(ConfigFormat::Json.into_platform_file_name()).exists()
-      || folder.join(ConfigFormat::Json5.into_platform_file_name()).exists()
-      || folder.join(ConfigFormat::Toml.into_platform_file_name()).exists()
+       || folder.join(ConfigFormat::Json.into_platform_file_name(target)).exists()
+      || folder.join(ConfigFormat::Json5.into_platform_file_name(target)).exists()
+      || folder.join(ConfigFormat::Toml.into_platform_file_name(target)).exists()
 }
 
 /// Determines if the given file path represents a Tauri configuration file.
-pub fn is_configuration_file(path: &Path) -> bool {
+pub fn is_configuration_file(target: Target, path: &Path) -> bool {
   path
     .file_name()
     .map(|file_name| {
       file_name == OsStr::new(ConfigFormat::Json.into_file_name())
         || file_name == OsStr::new(ConfigFormat::Json5.into_file_name())
         || file_name == OsStr::new(ConfigFormat::Toml.into_file_name())
       // platform file names
-      || file_name == OsStr::new(ConfigFormat::Json.into_platform_file_name())
-        || file_name == OsStr::new(ConfigFormat::Json5.into_platform_file_name())
-        || file_name == OsStr::new(ConfigFormat::Toml.into_platform_file_name())
+      || file_name == OsStr::new(ConfigFormat::Json.into_platform_file_name(target))
+        || file_name == OsStr::new(ConfigFormat::Json5.into_platform_file_name(target))
+        || file_name == OsStr::new(ConfigFormat::Toml.into_platform_file_name(target))
     })
     .unwrap_or_default()
 }
@@ -192,9 +175,9 @@ pub fn is_configuration_file(path: &Path) -> bool {
 /// Merging the configurations using [JSON Merge Patch (RFC 7396)].
 ///
 /// [JSON Merge Patch (RFC 7396)]: https://datatracker.ietf.org/doc/html/rfc7396.
-pub fn read_from(root_dir: PathBuf) -> Result<Value, ConfigError> {
-  let mut config: Value = parse_value(root_dir.join("tauri.conf.json"))?.0;
-  if let Some((platform_config, _)) = read_platform(root_dir)? {
+pub fn read_from(target: Target, root_dir: PathBuf) -> Result<Value, ConfigError> {
+  let mut config: Value = parse_value(target, root_dir.join("tauri.conf.json"))?.0;
+  if let Some((platform_config, _)) = read_platform(target, root_dir)? {
     merge(&mut config, &platform_config);
   }
   Ok(config)
@@ -203,10 +186,13 @@ pub fn read_from(root_dir: PathBuf) -> Result<Value, ConfigError> {
 /// Reads the platform-specific configuration file from the given root directory if it exists.
 ///
 /// Check [`read_from`] for more information.
-pub fn read_platform(root_dir: PathBuf) -> Result<Option<(Value, PathBuf)>, ConfigError> {
-  let platform_config_path = root_dir.join(ConfigFormat::Json.into_platform_file_name());
-  if does_supported_file_name_exist(&platform_config_path) {
-    let (platform_config, path): (Value, PathBuf) = parse_value(platform_config_path)?;
+pub fn read_platform(
+  target: Target,
+  root_dir: PathBuf,
+) -> Result<Option<(Value, PathBuf)>, ConfigError> {
+  let platform_config_path = root_dir.join(ConfigFormat::Json.into_platform_file_name(target));
+  if does_supported_file_name_exist(target, &platform_config_path) {
+    let (platform_config, path): (Value, PathBuf) = parse_value(target, platform_config_path)?;
     Ok(Some((platform_config, path)))
   } else {
     Ok(None)
@@ -217,16 +203,16 @@ pub fn read_platform(root_dir: PathBuf) -> Result<Option<(Value, PathBuf)>, Conf
 ///
 /// The passed path is expected to be the path to the "default" configuration format, in this case
 /// JSON with `.json`.
-pub fn does_supported_file_name_exist(path: impl Into<PathBuf>) -> bool {
+pub fn does_supported_file_name_exist(target: Target, path: impl Into<PathBuf>) -> bool {
   let path = path.into();
   let source_file_name = path.file_name().unwrap().to_str().unwrap();
   let lookup_platform_config = ENABLED_FORMATS
     .iter()
-    .any(|format| source_file_name == format.into_platform_file_name());
+    .any(|format| source_file_name == format.into_platform_file_name(target));
   ENABLED_FORMATS.iter().any(|format| {
     path
       .with_file_name(if lookup_platform_config {
-        format.into_platform_file_name()
+        format.into_platform_file_name(target)
       } else {
         format.into_file_name()
       })
@@ -248,31 +234,37 @@ pub fn does_supported_file_name_exist(path: impl Into<PathBuf>) -> bool {
 ///   a. Parse it with `toml`
 ///   b. Return error if all above steps failed
 /// 4. Return error if all above steps failed
-pub fn parse(path: impl Into<PathBuf>) -> Result<(Config, PathBuf), ConfigError> {
-  do_parse(path.into())
+pub fn parse(target: Target, path: impl Into<PathBuf>) -> Result<(Config, PathBuf), ConfigError> {
+  do_parse(target, path.into())
 }
 
 /// See [`parse`] for specifics, returns a JSON [`Value`] instead of [`Config`].
-pub fn parse_value(path: impl Into<PathBuf>) -> Result<(Value, PathBuf), ConfigError> {
-  do_parse(path.into())
+pub fn parse_value(
+  target: Target,
+  path: impl Into<PathBuf>,
+) -> Result<(Value, PathBuf), ConfigError> {
+  do_parse(target, path.into())
 }
 
-fn do_parse<D: DeserializeOwned>(path: PathBuf) -> Result<(D, PathBuf), ConfigError> {
+fn do_parse<D: DeserializeOwned>(
+  target: Target,
+  path: PathBuf,
+) -> Result<(D, PathBuf), ConfigError> {
   let file_name = path
     .file_name()
     .map(OsStr::to_string_lossy)
     .unwrap_or_default();
   let lookup_platform_config = ENABLED_FORMATS
     .iter()
-    .any(|format| file_name == format.into_platform_file_name());
+    .any(|format| file_name == format.into_platform_file_name(target));
 
   let json5 = path.with_file_name(if lookup_platform_config {
-    ConfigFormat::Json5.into_platform_file_name()
+    ConfigFormat::Json5.into_platform_file_name(target)
   } else {
     ConfigFormat::Json5.into_file_name()
   });
   let toml = path.with_file_name(if lookup_platform_config {
-    ConfigFormat::Toml.into_platform_file_name()
+    ConfigFormat::Toml.into_platform_file_name(target)
   } else {
     ConfigFormat::Toml.into_file_name()
   });