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rpc_server.go
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rpc_server.go
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// Copyright (c) 2020 Dean Jackson <[email protected]>
// MIT Licence applies http:https://opensource.org/licenses/MIT
package main
import (
"fmt"
"log"
"net"
"net/rpc"
"os"
"time"
"github.com/deanishe/awgo/util"
)
// rpcServer provides the RPC API. It passes commands and responses between
// RPC clients and the Firefox extension.
type rpcServer struct {
ff *firefox // native application client run by FF extension
sock string // path to UNIX socket for RPC
listener net.Listener
server *rpc.Server
}
// create new RPC server on socket specified by filepath addr
func newRPCService(addr string, client *firefox) (*rpcServer, error) {
var err error
s := &rpcServer{
ff: client,
sock: addr,
server: rpc.NewServer(),
}
if err = s.server.RegisterName("Firefox", s); err != nil {
return nil, err
}
if s.listener, err = net.Listen("unix", s.sock); err != nil {
return nil, err
}
if err = os.Chmod(addr, 0600); err != nil {
return nil, err
}
return s, nil
}
// Ping checks connection to Firefox extension. Extension responds with "pong".
func (s *rpcServer) Ping(_ string, result *string) error {
defer util.Timed(time.Now(), "ping")
var r responseString
if err := s.ff.call("ping", nil, &r); err != nil {
return err
}
*result = r.String
return nil
}
// func (s *rpcServer) Windows(_ string, windows *[]Window) error {
// defer util.Timed(time.Now(), "get windows")
// var r responseWindows
// if err := s.ff.call("all-windows", nil, &r); err != nil {
// return err
// }
// *windows = r.Windows
// return nil
// }
// Tabs returns all Firefox tabs.
func (s *rpcServer) Tabs(_ string, tabs *[]Tab) error {
defer util.Timed(time.Now(), "get tabs")
var r responseTabs
if err := s.ff.call("all-tabs", nil, &r); err != nil {
return err
}
*tabs = r.Tabs
return nil
}
// ActivateTab brings the specified tab to the front.
func (s *rpcServer) ActivateTab(tabID int, _ *struct{}) error {
defer util.Timed(time.Now(), "activate tab")
var r responseNone
if err := s.ff.call("activate-tab", tabID, &r); err != nil {
return err
}
return nil
}
// CurrentTab returns the currently-active tab.
func (s *rpcServer) CurrentTab(_ string, tab *Tab) error {
defer util.Timed(time.Now(), "get current tab")
var r responseTab
if err := s.ff.call("current-tab", nil, &r); err != nil {
return err
}
*tab = r.Tab
return nil
}
// CloseTabsLeft closes tabs to the left of specified tab.
func (s *rpcServer) CloseTabsLeft(tabID int, _ *struct{}) error {
defer util.Timed(time.Now(), "close tabs to left")
var r responseNone
if err := s.ff.call("close-tabs-left", tabID, &r); err != nil {
return err
}
return nil
}
// CloseTabsRight closes tabs to the right of specified tab.
func (s *rpcServer) CloseTabsRight(tabID int, _ *struct{}) error {
defer util.Timed(time.Now(), "close tabs to right")
var r responseNone
if err := s.ff.call("close-tabs-right", tabID, &r); err != nil {
return err
}
return nil
}
// CloseTabsOther closes other tabs in same window as the specified one.
func (s *rpcServer) CloseTabsOther(tabID int, _ *struct{}) error {
defer util.Timed(time.Now(), "close other tabs")
var r responseNone
if err := s.ff.call("close-tabs-other", tabID, &r); err != nil {
return err
}
return nil
}
// Bookmarks returns all Firefox bookmarks matching query.
func (s *rpcServer) Bookmarks(query string, bookmarks *[]Bookmark) error {
defer util.Timed(time.Now(), fmt.Sprintf("search bookmarks for %q", query))
var (
r responseBookmarks
err error
)
if query == "" {
err = s.ff.call("all-bookmarks", nil, &r)
} else {
err = s.ff.call("search-bookmarks", query, &r)
}
if err != nil {
return err
}
*bookmarks = r.Bookmarks
return nil
}
// History searches Firefox browsing history.
func (s *rpcServer) History(query string, history *[]History) error {
defer util.Timed(time.Now(), fmt.Sprintf("search history for %q", query))
var (
r responseHistory
err error
)
err = s.ff.call("search-history", query, &r)
if err != nil {
return err
}
*history = r.Entries
return nil
}
// Downloads searches Firefox downloads.
func (s *rpcServer) Downloads(query string, downloads *[]Download) error {
defer util.Timed(time.Now(), fmt.Sprintf("search download for %q", query))
var (
r responseDownload
err error
)
err = s.ff.call("search-downloads", query, &r)
if err != nil {
return err
}
*downloads = r.Downloads
return nil
}
// func (s *rpcServer) RunJS(script string, _ *struct{}) error {
// defer util.Timed(time.Now(), "execute JS")
// var r responseNone
// if err := s.ff.call("execute-js", script, &r); err != nil {
// return err
// }
// return nil
// }
// arguments required for RunBookmarklet call. TabID may be 0, in which
// case the bookmarklet is executed in the active tab.
type RunBookmarkletArg struct {
TabID int `json:"tabId"`
BookmarkID string `json:"bookmarkId"`
}
// RunBookmarklet executes a given bookmarklet in a given tab.
func (s *rpcServer) RunBookmarklet(arg RunBookmarkletArg, _ *struct{}) error {
defer util.Timed(time.Now(), "run bookmarklet")
var r responseNone
if err := s.ff.call("run-bookmarklet", arg, &r); err != nil {
return err
}
return nil
}
func (s *rpcServer) run() {
log.Printf("serving RPC on %q ...", s.sock)
s.server.Accept(s.listener)
}
func (s *rpcServer) stop() error {
return s.listener.Close()
}
type responseString struct {
String string `json:"payload"`
}
// type responseWindows struct {
// Windows []Window `json:"payload"`
// }
type responseTabs struct {
Tabs []Tab `json:"payload"`
}
type responseTab struct {
Tab Tab `json:"payload"`
}
type responseHistory struct {
Entries []History `json:"payload"`
}
type responseTabCurrent struct {
Tab Tab `json:"payload"`
}
type responseBookmarks struct {
Bookmarks []Bookmark `json:"payload"`
}
type responseDownload struct {
Downloads []Download `json:"payload"`
}
type responseBool struct {
OK bool `json:"payload"`
}
type responseNone struct{}