feat(core): implement 'match exec' subcommand. Fix #883, Fix #780

espanso/src/cli/match_cli/exec.rs

@@ -0,0 +1,71 @@
+/*
+ * This file is part of espanso.
+ *
+ * Copyright (C) 2019-2021 Federico Terzi
+ *
+ * espanso is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * espanso is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with espanso.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+use std::collections::HashMap;
+
+use anyhow::{bail, Context, Result};
+use clap::ArgMatches;
+use espanso_ipc::IPCClient;
+use espanso_path::Paths;
+
+use crate::{
+  ipc::{create_ipc_client_to_worker, IPCEvent, RequestMatchExpansionPayload},
+  lock::acquire_worker_lock,
+};
+
+pub fn exec_main(cli_args: &ArgMatches, paths: &Paths) -> Result<()> {
+  let trigger = cli_args.value_of("trigger");
+  let args = cli_args.values_of("arg");
+
+  if trigger.is_none() || trigger.map(str::is_empty).unwrap_or(false) {
+    bail!("You need to specify the --trigger 'trigger' option. Run `espanso match exec --help` for more information.");
+  }
+
+  if acquire_worker_lock(&paths.runtime).is_some() {
+    bail!("Worker process is not running, please start Espanso first.")
+  }
+
+  let mut client = create_ipc_client_to_worker(&paths.runtime)?;
+
+  let mut match_args = HashMap::new();
+  if let Some(args) = args {
+    args.for_each(|arg| {
+      let tokens = arg.split_once('=');
+      if let Some((key, value)) = tokens {
+        match_args.insert(key.to_string(), value.to_string());
+      } else {
+        eprintln!(
+          "invalid format for argument '{}', you should follow the 'name=value' format",
+          arg
+        );
+      }
+    })
+  }
+
+  client
+    .send_async(IPCEvent::RequestMatchExpansion(
+      RequestMatchExpansionPayload {
+        trigger: trigger.map(String::from),
+        args: match_args,
+      },
+    ))
+    .context("unable to send payload to worker process")?;
+
+  Ok(())
+}

espanso/src/cli/match_cli/mod.rs

@@ -19,10 +19,12 @@
 
 use super::{CliModule, CliModuleArgs};
 
+mod exec;
 mod list;
 
 pub fn new() -> CliModule {
   CliModule {
+    requires_paths: true,
     requires_config: true,
     subcommand: "match".to_string(),
     entry: match_main,
@@ -34,14 +36,18 @@ fn match_main(args: CliModuleArgs) -> i32 {
   let cli_args = args.cli_args.expect("missing cli_args");
   let config_store = args.config_store.expect("missing config_store");
   let match_store = args.match_store.expect("missing match_store");
+  let paths = args.paths.expect("missing paths");
 
   if let Some(sub_args) = cli_args.subcommand_matches("list") {
     if let Err(err) = list::list_main(sub_args, config_store, match_store) {
       eprintln!("unable to list matches: {:?}", err);
       return 1;
     }
-  } else if let Some(_sub_args) = cli_args.subcommand_matches("exec") {
-    todo!();
+  } else if let Some(sub_args) = cli_args.subcommand_matches("exec") {
+    if let Err(err) = exec::exec_main(sub_args, &paths) {
+      eprintln!("unable to exec match: {:?}", err);
+      return 1;
+    }
   } else {
     eprintln!("Invalid use, please run 'espanso match --help' to get more information.");
     return 1;

espanso/src/cli/worker/engine/funnel/ipc.rs

@@ -0,0 +1,72 @@
+/*
+ * This file is part of espanso.
+ *
+ * Copyright (C) 2019-2021 Federico Terzi
+ *
+ * espanso is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * espanso is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with espanso.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+use crossbeam::channel::{Receiver, Select, SelectedOperation};
+
+use espanso_engine::{
+  event::{Event, EventType},
+  funnel,
+};
+use log::warn;
+
+use super::sequencer::Sequencer;
+
+pub struct IpcEventSource<'a> {
+  pub ipc_event_receiver: Receiver<EventType>,
+  pub sequencer: &'a Sequencer,
+}
+
+impl<'a> IpcEventSource<'a> {
+  pub fn new(ipc_event_receiver: Receiver<EventType>, sequencer: &'a Sequencer) -> Self {
+    IpcEventSource {
+      ipc_event_receiver,
+      sequencer,
+    }
+  }
+}
+
+impl<'a> funnel::Source<'a> for IpcEventSource<'a> {
+  fn register(&'a self, select: &mut Select<'a>) -> usize {
+    select.recv(&self.ipc_event_receiver)
+  }
+
+  fn receive(&self, op: SelectedOperation) -> Option<Event> {
+    let ipc_event = op
+      .recv(&self.ipc_event_receiver)
+      .expect("unable to select data from IpcEventSource receiver");
+
+    // Execute only events that have been whitelisted
+    if !is_event_type_allowed(&ipc_event) {
+      warn!(
+        "received black-listed event from IPC stream, blocking it: {:?}",
+        ipc_event
+      );
+      return None;
+    }
+
+    Some(Event {
+      source_id: self.sequencer.next_id(),
+      etype: ipc_event,
+    })
+  }
+}
+
+fn is_event_type_allowed(event: &EventType) -> bool {
+  matches!(event, EventType::MatchExecRequest(_))
+}

espanso/src/cli/worker/engine/funnel/mod.rs

@@ -35,6 +35,7 @@ use self::{
 
 pub mod detect;
 pub mod exit;
+pub mod ipc;
 pub mod key_state;
 pub mod modifier;
 pub mod secure_input;

espanso/src/cli/worker/engine/funnel/secure_input.rs

@@ -43,33 +43,22 @@ impl<'a> SecureInputSource<'a> {
 
 impl<'a> funnel::Source<'a> for SecureInputSource<'a> {
   fn register(&'a self, select: &mut Select<'a>) -> usize {
-    if cfg!(target_os = "macos") {
-      select.recv(&self.receiver)
-    } else {
-      999999
-    }
+    select.recv(&self.receiver)
   }
 
   fn receive(&self, op: SelectedOperation) -> Option<Event> {
-    if cfg!(target_os = "macos") {
-      let si_event = op
-        .recv(&self.receiver)
-        .expect("unable to select data from SecureInputSource receiver");
+    let si_event = op
+      .recv(&self.receiver)
+      .expect("unable to select data from SecureInputSource receiver");
 
-      Some(Event {
-        source_id: self.sequencer.next_id(),
-        etype: match si_event {
-          SecureInputEvent::Disabled => EventType::SecureInputDisabled,
-          SecureInputEvent::Enabled { app_name, app_path } => {
-            EventType::SecureInputEnabled(SecureInputEnabledEvent { app_name, app_path })
-          }
-        },
-      })
-    } else {
-      Some(Event {
-        source_id: self.sequencer.next_id(),
-        etype: EventType::NOOP,
-      })
-    }
+    Some(Event {
+      source_id: self.sequencer.next_id(),
+      etype: match si_event {
+        SecureInputEvent::Disabled => EventType::SecureInputDisabled,
+        SecureInputEvent::Enabled { app_name, app_path } => {
+          EventType::SecureInputEnabled(SecureInputEnabledEvent { app_name, app_path })
+        }
+      },
+    })
   }
 }

espanso/src/cli/worker/engine/mod.rs

@@ -23,7 +23,7 @@ use anyhow::Result;
 use crossbeam::channel::Receiver;
 use espanso_config::{config::ConfigStore, matches::store::MatchStore};
 use espanso_detect::SourceCreationOptions;
-use espanso_engine::event::ExitMode;
+use espanso_engine::event::{EventType, ExitMode};
 use espanso_inject::{InjectorCreationOptions, KeyboardStateProvider};
 use espanso_path::Paths;
 use espanso_ui::{event::UIEvent, UIRemote};
@@ -82,6 +82,7 @@ pub fn initialize_and_spawn(
   secure_input_receiver: Receiver<SecureInputEvent>,
   use_evdev_backend: bool,
   start_reason: Option<String>,
+  ipc_event_receiver: Receiver<EventType>,
 ) -> Result<JoinHandle<ExitMode>> {
   let handle = std::thread::Builder::new()
     .name("engine thread".to_string())
@@ -131,17 +132,18 @@ pub fn initialize_and_spawn(
         })
         .expect("failed to initialize detector module");
       let exit_source = super::engine::funnel::exit::ExitSource::new(exit_signal, &sequencer);
+      let ipc_event_source =
+        super::engine::funnel::ipc::IpcEventSource::new(ipc_event_receiver, &sequencer);
       let ui_source = super::engine::funnel::ui::UISource::new(ui_event_receiver, &sequencer);
       let secure_input_source = super::engine::funnel::secure_input::SecureInputSource::new(
         secure_input_receiver,
         &sequencer,
       );
-      let sources: Vec<&dyn espanso_engine::funnel::Source> = vec![
-        &detect_source,
-        &exit_source,
-        &ui_source,
-        &secure_input_source,
-      ];
+      let mut sources: Vec<&dyn espanso_engine::funnel::Source> =
+        vec![&detect_source, &exit_source, &ui_source, &ipc_event_source];
+      if cfg!(target_os = "macos") {
+        sources.push(&secure_input_source);
+      }
       let funnel = espanso_engine::funnel::default(&sources);
 
       let rolling_matcher = RollingMatcherAdapter::new(
@@ -226,6 +228,7 @@ pub fn initialize_and_spawn(
         &config_manager,
         &config_manager,
         &modifier_state_store,
+        &combined_match_cache,
       );
 
       let event_injector = EventInjectorAdapter::new(&*injector, &config_manager);

espanso/src/cli/worker/ipc.rs

@@ -21,13 +21,17 @@ use std::path::Path;
 
 use anyhow::Result;
 use crossbeam::channel::Sender;
-use espanso_engine::event::ExitMode;
+use espanso_engine::event::{external::MatchExecRequestEvent, EventType, ExitMode};
 use espanso_ipc::{EventHandlerResponse, IPCServer};
 use log::{error, warn};
 
 use crate::ipc::IPCEvent;
 
-pub fn initialize_and_spawn(runtime_dir: &Path, exit_notify: Sender<ExitMode>) -> Result<()> {
+pub fn initialize_and_spawn(
+  runtime_dir: &Path,
+  exit_notify: Sender<ExitMode>,
+  event_notify: Sender<EventType>,
+) -> Result<()> {
   let server = crate::ipc::create_worker_ipc_server(runtime_dir)?;
 
   std::thread::Builder::new()
@@ -55,6 +59,21 @@ pub fn initialize_and_spawn(runtime_dir: &Path, exit_notify: Sender<ExitMode>) -
 
             EventHandlerResponse::NoResponse
           }
+          IPCEvent::RequestMatchExpansion(payload) => {
+            if let Err(err) =
+              event_notify.send(EventType::MatchExecRequest(MatchExecRequestEvent {
+                trigger: payload.trigger,
+                args: payload.args,
+              }))
+            {
+              error!(
+                "experienced error while sending event signal from worker ipc handler: {}",
+                err
+              );
+            }
+
+            EventHandlerResponse::NoResponse
+          }
           #[allow(unreachable_patterns)]
           unexpected_event => {
             warn!(

espanso/src/cli/worker/match_cache.rs

@@ -21,8 +21,9 @@ use std::collections::HashMap;
 
 use espanso_config::{
   config::ConfigStore,
-  matches::{store::MatchStore, Match, MatchEffect},
+  matches::{store::MatchStore, Match, MatchCause, MatchEffect},
 };
+use espanso_engine::event::internal::DetectedMatch;
 
 use super::{builtin::BuiltInMatch, engine::process::middleware::match_select::MatchSummary};
 
@@ -164,3 +165,50 @@ impl<'a> espanso_engine::process::MatchProvider for CombinedMatchCache<'a> {
     ids
   }
 }
+
+impl<'a> espanso_engine::process::MatchResolver for CombinedMatchCache<'a> {
+  fn find_matches_from_trigger(&self, trigger: &str) -> Vec<DetectedMatch> {
+    let user_matches: Vec<DetectedMatch> = self
+      .user_match_cache
+      .cache
+      .values()
+      .filter_map(|m| {
+        if let MatchCause::Trigger(trigger_cause) = &m.cause {
+          if trigger_cause.triggers.iter().any(|t| t == trigger) {
+            Some(DetectedMatch {
+              id: m.id,
+              trigger: Some(trigger.to_string()),
+              ..Default::default()
+            })
+          } else {
+            None
+          }
+        } else {
+          None
+        }
+      })
+      .collect();
+
+    let builtin_matches: Vec<DetectedMatch> = self
+      .builtin_match_cache
+      .values()
+      .filter_map(|m| {
+        if m.triggers.iter().any(|t| t == trigger) {
+          Some(DetectedMatch {
+            id: m.id,
+            trigger: Some(trigger.to_string()),
+            ..Default::default()
+          })
+        } else {
+          None
+        }
+      })
+      .collect();
+
+    let mut matches = Vec::with_capacity(user_matches.len() + builtin_matches.len());
+    matches.extend(user_matches);
+    matches.extend(builtin_matches);
+
+    matches
+  }
+}

espanso/src/cli/worker/mod.rs

@@ -112,6 +112,7 @@ fn worker_main(args: CliModuleArgs) -> i32 {
     .expect("unable to initialize UI module");
 
   let (engine_exit_notify, engine_exit_receiver) = unbounded();
+  let (ipc_event_notify, ipc_event_receiver) = unbounded();
   let (engine_ui_event_sender, engine_ui_event_receiver) = unbounded();
   let (engine_secure_input_sender, engine_secure_input_receiver) = unbounded();
 
@@ -126,11 +127,12 @@ fn worker_main(args: CliModuleArgs) -> i32 {
     engine_secure_input_receiver,
     use_evdev_backend,
     start_reason,
+    ipc_event_receiver,
   )
   .expect("unable to initialize engine");
 
   // Setup the IPC server
-  ipc::initialize_and_spawn(&paths.runtime, engine_exit_notify.clone())
+  ipc::initialize_and_spawn(&paths.runtime, engine_exit_notify.clone(), ipc_event_notify)
     .expect("unable to initialize IPC server");
 
   // If specified, automatically monitor the daemon status and

espanso/src/ipc.rs

@@ -20,12 +20,20 @@
 use anyhow::Result;
 use espanso_ipc::{IPCClient, IPCServer};
 use serde::{Deserialize, Serialize};
-use std::path::Path;
+use std::{collections::HashMap, path::Path};
 
 #[derive(Debug, Serialize, Deserialize)]
 pub enum IPCEvent {
   Exit,
   ExitAllProcesses,
+
+  RequestMatchExpansion(RequestMatchExpansionPayload),
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct RequestMatchExpansionPayload {
+  pub trigger: Option<String>,
+  pub args: HashMap<String, String>,
 }
 
 pub fn create_daemon_ipc_server(runtime_dir: &Path) -> Result<impl IPCServer<IPCEvent>> {

espanso/src/main.rs

@@ -398,12 +398,24 @@ For example, specifying 'email' is equivalent to 'match/email.yml'."#))
                 .takes_value(true)
             )
         )
-        // .subcommand(SubCommand::with_name("exec")
-        //     .about("Triggers the expansion of the given match")
-        //     .arg(Arg::with_name("trigger")
-        //         .help("The trigger of the match to be expanded")
-        //     )
-        // )
+        .subcommand(SubCommand::with_name("exec")
+            .about("Triggers the expansion of a match")
+            .arg(Arg::with_name("trigger")
+                .short("t")
+                .long("trigger")
+                .help("The trigger of the match to be expanded")
+                .required(false)
+                .takes_value(true)
+            )
+            .arg(Arg::with_name("arg")
+                .long("arg")
+                .help("Specify also an argument for the expansion, following the --arg 'name=value' format. You can specify multiple ones.")
+                .required(false)
+                .takes_value(true)
+                .multiple(true)
+                .number_of_values(1)
+            )
+        )
     )
     .subcommand(
       SubCommand::with_name("package")