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authorDrew DeVault <sir@cmpwn.com>2019-07-19 14:15:48 -0400
committerDrew DeVault <sir@cmpwn.com>2019-07-19 14:15:48 -0400
commit7a489cb0011a34a68d3e77d0174076857cc37902 (patch)
treed21df8ea9b872ccc08cff117f203ad0d80b94a26 /lib
parentb3a66866b95d77f202f571efedd2f7ec309aacf5 (diff)
Add Unix socket for communicating with aerc
Diffstat (limited to 'lib')
-rw-r--r--lib/socket.go82
1 files changed, 82 insertions, 0 deletions
diff --git a/lib/socket.go b/lib/socket.go
new file mode 100644
index 0000000..c256579
--- /dev/null
+++ b/lib/socket.go
@@ -0,0 +1,82 @@
+package lib
+
+import (
+ "bufio"
+ "fmt"
+ "log"
+ "net"
+ "net/url"
+ "path"
+ "strings"
+ "sync/atomic"
+ "time"
+
+ "github.com/kyoh86/xdg"
+)
+
+type AercServer struct {
+ logger *log.Logger
+ listener net.Listener
+ OnMailto func(addr *url.URL) error
+}
+
+func StartServer(logger *log.Logger) (*AercServer, error) {
+ sockpath := path.Join(xdg.RuntimeDir(), "aerc.sock")
+ l, err := net.Listen("unix", sockpath)
+ if err != nil {
+ return nil, err
+ }
+ as := &AercServer{
+ logger: logger,
+ listener: l,
+ }
+ // TODO: stash clients and close them on exit... bleh racey
+ go func() {
+ for {
+ conn, err := l.Accept()
+ if err != nil {
+ // TODO: Something more useful, in some cases, on wednesdays,
+ // after 2 PM, I guess?
+ as.logger.Println("Closing Unix server: %v", err)
+ return
+ }
+ go as.handleClient(conn)
+ }
+ }()
+ return as, nil
+}
+
+func (as *AercServer) Close() {
+ as.listener.Close()
+}
+
+var lastId int64 = 0 // access via atomic
+
+func (as *AercServer) handleClient(conn net.Conn) {
+ clientId := atomic.AddInt64(&lastId, 1)
+ as.logger.Printf("Accepted Unix connection %d", clientId)
+ scanner := bufio.NewScanner(conn)
+ conn.SetDeadline(time.Now().Add(1 * time.Minute))
+ for scanner.Scan() {
+ conn.SetDeadline(time.Now().Add(1 * time.Minute))
+ msg := scanner.Text()
+ if !strings.ContainsRune(msg, ':') {
+ conn.Write([]byte("error: invalid command\n"))
+ }
+ as.logger.Printf("unix:%d: got message %s", clientId, msg)
+ prefix := msg[:strings.IndexRune(msg, ':')]
+ switch prefix {
+ case "mailto":
+ mailto, err := url.Parse(msg)
+ if err != nil {
+ conn.Write([]byte(fmt.Sprintf("error: %v\n", err)))
+ break
+ }
+ if as.OnMailto != nil {
+ err = as.OnMailto(mailto)
+ }
+ conn.Write([]byte(fmt.Sprintf("result: %v\n", err)))
+ }
+ }
+ as.logger.Printf("Closed Unix connection %d", clientId)
+}