95 lines
2.2 KiB
Go
95 lines
2.2 KiB
Go
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package bridge
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import (
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"git.openprivacy.ca/openprivacy/libricochet-go/log"
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"cwtch.im/cwtch/event"
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"encoding/json"
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"os"
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"sync"
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"syscall"
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)
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/* pipeBridge creates a pair of named pipes
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Needs a call to new client and service to fully successfully open
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*/
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type pipeBridge struct {
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in, out *os.File
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closedChan chan bool
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closed bool
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lock sync.Mutex
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}
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// NewPipeBridgeClient returns a pipe backed IPCBridge for a client
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func NewPipeBridgeClient(inFilename, outFilename string) (event.IPCBridge, error) {
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log.Debugf("Making new PipeBridge Client...\n")
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syscall.Mkfifo(inFilename, 0600)
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in, err := os.OpenFile(inFilename, os.O_RDONLY, 0600)
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if err != nil {
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return nil, err
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}
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syscall.Mkfifo(outFilename, 0600)
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out, err := os.OpenFile(outFilename, os.O_WRONLY, 0600)
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if err != nil {
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return nil, err
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}
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pb := &pipeBridge{in: in, out: out, closedChan: make(chan bool), closed: false}
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log.Debugf("Successfully created new PipeBridge Client!\n")
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return pb, nil
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}
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// NewPipeBridgeService returns a pipe backed IPCBridge for a service
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func NewPipeBridgeService(inFilename, outFilename string) (event.IPCBridge, error) {
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log.Debugf("Making new PipeBridge Service...\n")
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syscall.Mkfifo(outFilename, 0600)
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out, err := os.OpenFile(outFilename, os.O_WRONLY, 0600)
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if err != nil {
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return nil, err
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}
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syscall.Mkfifo(inFilename, 0600)
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in, err := os.OpenFile(inFilename, os.O_RDONLY, 0600)
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if err != nil {
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return nil, err
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}
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pb := &pipeBridge{in: in, out: out, closedChan: make(chan bool), closed: false}
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log.Debugf("Successfully created new PipeBridge Service!\n")
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return pb, nil
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}
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func (pb *pipeBridge) Read() (message event.IPCMessage, ok bool) {
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dec := json.NewDecoder(pb.in)
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err := dec.Decode(&message)
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if err != nil {
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log.Errorf("Read error: %v", err)
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return event.IPCMessage{}, false
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}
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return message, true
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}
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func (pb *pipeBridge) Write(message *event.IPCMessage) {
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pb.lock.Lock()
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defer pb.lock.Unlock()
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if !pb.closed {
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messageJSON, _ := json.Marshal(message)
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pb.out.Write(messageJSON)
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}
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}
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func (pb *pipeBridge) Shutdown() {
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pb.lock.Lock()
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defer pb.lock.Unlock()
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if !pb.closed {
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pb.in.Close()
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pb.out.Close()
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pb.closed = true
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}
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}
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