mirror of
https://github.com/mjl-/mox.git
synced 2024-12-26 16:33:47 +03:00
03c3f56a59
this doesn't really test the output of the ctl commands, just that they succeed without error. better than nothing... testing found two small bugs, that are not an issue in practice: 1. we were ack'ing streamed data from the other side of the ctl connection before having read it. when there is no buffer space on the connection (always the case for net.Pipe) that would cause a deadlock. only actually happened during the new tests. 2. the generated dkim keys are relatively to the directory of the dynamic config file. mox looked it up relative to the directory of the _static_ config file at startup. this directory is typicaly the same. users would have noticed if they had triggered this.
679 lines
16 KiB
Go
679 lines
16 KiB
Go
package main
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import (
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"bufio"
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"context"
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"fmt"
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"io"
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"log"
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"net"
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"os"
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"path/filepath"
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"runtime/debug"
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"sort"
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"strconv"
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"strings"
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"time"
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"github.com/mjl-/bstore"
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"github.com/mjl-/mox/dns"
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"github.com/mjl-/mox/message"
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"github.com/mjl-/mox/metrics"
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"github.com/mjl-/mox/mlog"
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"github.com/mjl-/mox/mox-"
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"github.com/mjl-/mox/queue"
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"github.com/mjl-/mox/smtp"
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"github.com/mjl-/mox/store"
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)
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// ctl represents a connection to the ctl unix domain socket of a running mox instance.
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// ctl provides functions to read/write commands/responses/data streams.
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type ctl struct {
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cmd string // Set for server-side of commands.
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conn net.Conn
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r *bufio.Reader // Set for first reader.
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x any // If set, errors are handled by calling panic(x) instead of log.Fatal.
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log *mlog.Log // If set, along with x, logging is done here.
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}
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// xctl opens a ctl connection.
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func xctl() *ctl {
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p := mox.DataDirPath("ctl")
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conn, err := net.Dial("unix", p)
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if err != nil {
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log.Fatalf("connecting to control socket at %q: %v", p, err)
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}
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ctl := &ctl{conn: conn}
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version := ctl.xread()
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if version != "ctlv0" {
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log.Fatalf("ctl protocol mismatch, got %q, expected ctlv0", version)
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}
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return ctl
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}
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// Interpret msg as an error.
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// If ctl.x is set, the string is also written to the ctl to be interpreted as error by the other party.
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func (c *ctl) xerror(msg string) {
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if c.x == nil {
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log.Fatalln(msg)
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}
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c.log.Debugx("ctl error", fmt.Errorf("%s", msg), mlog.Field("cmd", c.cmd))
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c.xwrite(msg)
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panic(c.x)
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}
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// Check if err is not nil. If so, handle error through ctl.x or log.Fatal. If
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// ctl.x is set, the error string is written to ctl, to be interpreted as an error
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// by the command reading from ctl.
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func (c *ctl) xcheck(err error, msg string) {
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if err == nil {
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return
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}
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if c.x == nil {
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log.Fatalf("%s: %s", msg, err)
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}
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c.log.Debugx(msg, err, mlog.Field("cmd", c.cmd))
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fmt.Fprintf(c.conn, "%s: %s\n", msg, err)
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panic(c.x)
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}
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// Read a line and return it without trailing newline.
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func (c *ctl) xread() string {
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if c.r == nil {
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c.r = bufio.NewReader(c.conn)
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}
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line, err := c.r.ReadString('\n')
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c.xcheck(err, "read from ctl")
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return strings.TrimSuffix(line, "\n")
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}
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// Read a line. If not "ok", the string is interpreted as an error.
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func (c *ctl) xreadok() {
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line := c.xread()
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if line != "ok" {
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c.xerror(line)
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}
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}
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// Write a string, typically a command or parameter.
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func (c *ctl) xwrite(text string) {
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_, err := fmt.Fprintln(c.conn, text)
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c.xcheck(err, "write")
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}
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// Write "ok" to indicate success.
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func (c *ctl) xwriteok() {
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c.xwrite("ok")
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}
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// Copy data from a stream from ctl to dst.
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func (c *ctl) xstreamto(dst io.Writer) {
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_, err := io.Copy(dst, c.reader())
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c.xcheck(err, "reading message")
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}
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// Copy data from src to a stream to ctl.
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func (c *ctl) xstreamfrom(src io.Reader) {
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w := c.writer()
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_, err := io.Copy(w, src)
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c.xcheck(err, "copying")
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w.xclose()
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}
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// Writer returns an io.Writer for a data stream to ctl.
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// When done writing, caller must call xclose to signal the end of the stream.
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// Behaviour of "x" is copied from ctl.
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func (c *ctl) writer() *ctlwriter {
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return &ctlwriter{cmd: c.cmd, conn: c.conn, x: c.x, log: c.log}
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}
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// Reader returns an io.Reader for a data stream from ctl.
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// Behaviour of "x" is copied from ctl.
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func (c *ctl) reader() *ctlreader {
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if c.r == nil {
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c.r = bufio.NewReader(c.conn)
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}
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return &ctlreader{cmd: c.cmd, conn: c.conn, r: c.r, x: c.x, log: c.log}
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}
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/*
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Ctlwriter and ctlreader implement the writing and reading a data stream. They
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implement the io.Writer and io.Reader interface. In the protocol below each
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non-data message ends with a newline that is typically stripped when
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interpreting.
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Zero or more data transactions:
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> "123" (for data size) or an error message
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> data, 123 bytes
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< "ok" or an error message
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Followed by a end of stream indicated by zero data bytes message:
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> "0"
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*/
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type ctlwriter struct {
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cmd string // Set for server-side of commands.
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conn net.Conn // Ctl socket from which messages are read.
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buf []byte // Scratch buffer, for reading response.
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x any // If not nil, errors in Write and xcheckf are handled with panic(x), otherwise with a log.Fatal.
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log *mlog.Log
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}
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func (s *ctlwriter) Write(buf []byte) (int, error) {
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_, err := fmt.Fprintf(s.conn, "%d\n", len(buf))
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s.xcheck(err, "write count")
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_, err = s.conn.Write(buf)
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s.xcheck(err, "write data")
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if s.buf == nil {
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s.buf = make([]byte, 512)
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}
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n, err := s.conn.Read(s.buf)
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s.xcheck(err, "reading response to write")
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line := strings.TrimSuffix(string(s.buf[:n]), "\n")
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if line != "ok" {
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s.xerror(line)
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}
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return len(buf), nil
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}
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func (s *ctlwriter) xerror(msg string) {
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if s.x == nil {
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log.Fatalln(msg)
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} else {
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s.log.Debugx("error", fmt.Errorf("%s", msg), mlog.Field("cmd", s.cmd))
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panic(s.x)
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}
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}
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func (s *ctlwriter) xcheck(err error, msg string) {
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if err == nil {
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return
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}
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if s.x == nil {
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log.Fatalf("%s: %s", msg, err)
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} else {
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s.log.Debugx(msg, err, mlog.Field("cmd", s.cmd))
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panic(s.x)
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}
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}
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func (s *ctlwriter) xclose() {
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_, err := fmt.Fprintf(s.conn, "0\n")
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s.xcheck(err, "write eof")
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}
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type ctlreader struct {
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cmd string // Set for server-side of command.
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conn net.Conn // For writing "ok" after reading.
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r *bufio.Reader // Buffered ctl socket.
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err error // If set, returned for each read. can also be io.EOF.
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npending int // Number of bytes that can still be read until a new count line must be read.
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x any // If set, errors are handled with panic(x) instead of log.Fatal.
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log *mlog.Log // If x is set, logging goes to log.
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}
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func (s *ctlreader) Read(buf []byte) (N int, Err error) {
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if s.err != nil {
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return 0, s.err
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}
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if s.npending == 0 {
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line, err := s.r.ReadString('\n')
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s.xcheck(err, "reading count")
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line = strings.TrimSuffix(line, "\n")
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n, err := strconv.ParseInt(line, 10, 32)
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if err != nil {
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s.xerror(line)
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}
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if n == 0 {
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s.err = io.EOF
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return 0, s.err
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}
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s.npending = int(n)
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}
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rn := len(buf)
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if rn > s.npending {
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rn = s.npending
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}
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n, err := s.r.Read(buf[:rn])
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s.xcheck(err, "read from ctl")
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s.npending -= n
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if s.npending == 0 {
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_, err = fmt.Fprintln(s.conn, "ok")
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s.xcheck(err, "writing ok after reading")
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}
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return n, err
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}
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func (s *ctlreader) xerror(msg string) {
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if s.x == nil {
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log.Fatalln(msg)
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} else {
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s.log.Debugx("error", fmt.Errorf("%s", msg), mlog.Field("cmd", s.cmd))
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panic(s.x)
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}
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}
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func (s *ctlreader) xcheck(err error, msg string) {
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if err == nil {
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return
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}
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if s.x == nil {
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log.Fatalf("%s: %s", msg, err)
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} else {
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s.log.Debugx(msg, err, mlog.Field("cmd", s.cmd))
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panic(s.x)
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}
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}
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// servectl handles requests on the unix domain socket "ctl", e.g. for graceful shutdown, local mail delivery.
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func servectl(ctx context.Context, log *mlog.Log, conn net.Conn, shutdown func()) {
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log.Debug("ctl connection")
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var stop = struct{}{} // Sentinel value for panic and recover.
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ctl := &ctl{conn: conn, x: stop, log: log}
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defer func() {
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x := recover()
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if x == nil || x == stop {
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return
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}
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log.Error("servectl panic", mlog.Field("err", x), mlog.Field("cmd", ctl.cmd))
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debug.PrintStack()
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metrics.PanicInc("ctl")
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}()
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defer conn.Close()
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ctl.xwrite("ctlv0")
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for {
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servectlcmd(ctx, ctl, shutdown)
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}
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}
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func servectlcmd(ctx context.Context, ctl *ctl, shutdown func()) {
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log := ctl.log
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cmd := ctl.xread()
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ctl.cmd = cmd
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log.Info("ctl command", mlog.Field("cmd", cmd))
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switch cmd {
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case "stop":
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shutdown()
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os.Exit(0)
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case "deliver":
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/* The protocol, double quoted are literals.
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> "deliver"
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> address
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< "ok"
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> stream
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< "ok"
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*/
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to := ctl.xread()
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a, addr, err := store.OpenEmail(to)
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ctl.xcheck(err, "lookup destination address")
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msgFile, err := store.CreateMessageTemp("ctl-deliver")
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ctl.xcheck(err, "creating temporary message file")
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defer func() {
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if msgFile != nil {
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err := os.Remove(msgFile.Name())
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log.Check(err, "removing temporary message file", mlog.Field("path", msgFile.Name()))
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err = msgFile.Close()
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log.Check(err, "closing temporary message file")
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}
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}()
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mw := &message.Writer{Writer: msgFile}
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ctl.xwriteok()
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ctl.xstreamto(mw)
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err = msgFile.Sync()
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ctl.xcheck(err, "syncing message to storage")
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msgPrefix := []byte{}
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if !mw.HaveHeaders {
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msgPrefix = []byte("\r\n\r\n")
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}
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m := &store.Message{
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Received: time.Now(),
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Size: int64(len(msgPrefix)) + mw.Size,
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MsgPrefix: msgPrefix,
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}
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a.WithWLock(func() {
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err := a.Deliver(log, addr, m, msgFile, true)
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ctl.xcheck(err, "delivering message")
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log.Info("message delivered through ctl", mlog.Field("to", to))
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})
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err = msgFile.Close()
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log.Check(err, "closing delivered message file")
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msgFile = nil
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err = a.Close()
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ctl.xcheck(err, "closing account")
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ctl.xwriteok()
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case "setaccountpassword":
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/* protocol:
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> "setaccountpassword"
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> address
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> password
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< "ok" or error
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*/
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addr := ctl.xread()
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pw := ctl.xread()
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acc, _, err := store.OpenEmail(addr)
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ctl.xcheck(err, "open account")
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defer func() {
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if acc != nil {
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err := acc.Close()
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log.Check(err, "closing account after setting password")
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}
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}()
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err = acc.SetPassword(pw)
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ctl.xcheck(err, "setting password")
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err = acc.Close()
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ctl.xcheck(err, "closing account")
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acc = nil
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ctl.xwriteok()
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case "queue":
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/* protocol:
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> "queue"
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< "ok"
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< stream
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*/
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qmsgs, err := queue.List(ctx)
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ctl.xcheck(err, "listing queue")
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ctl.xwriteok()
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xw := ctl.writer()
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fmt.Fprintln(xw, "queue:")
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for _, qm := range qmsgs {
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var lastAttempt string
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if qm.LastAttempt != nil {
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lastAttempt = time.Since(*qm.LastAttempt).Round(time.Second).String()
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}
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fmt.Fprintf(xw, "%5d %s from:%s to:%s next %s last %s error %q\n", qm.ID, qm.Queued.Format(time.RFC3339), qm.Sender().LogString(), qm.Recipient().LogString(), -time.Since(qm.NextAttempt).Round(time.Second), lastAttempt, qm.LastError)
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}
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if len(qmsgs) == 0 {
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fmt.Fprint(xw, "(empty)\n")
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}
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xw.xclose()
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case "queuekick":
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/* protocol:
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> "queuekick"
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> id
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> todomain
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> recipient
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> transport // if empty, transport is left unchanged; in future, we may want to differtiate between "leave unchanged" and "set to empty string".
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< count
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< "ok" or error
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*/
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idstr := ctl.xread()
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todomain := ctl.xread()
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recipient := ctl.xread()
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transport := ctl.xread()
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id, err := strconv.ParseInt(idstr, 10, 64)
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if err != nil {
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ctl.xwrite("0")
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ctl.xcheck(err, "parsing id")
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}
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var xtransport *string
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if transport != "" {
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xtransport = &transport
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}
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count, err := queue.Kick(ctx, id, todomain, recipient, xtransport)
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ctl.xcheck(err, "kicking queue")
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ctl.xwrite(fmt.Sprintf("%d", count))
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ctl.xwriteok()
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case "queuedrop":
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/* protocol:
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> "queuedrop"
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> id
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> todomain
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> recipient
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< count
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< "ok" or error
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*/
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idstr := ctl.xread()
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todomain := ctl.xread()
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recipient := ctl.xread()
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id, err := strconv.ParseInt(idstr, 10, 64)
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if err != nil {
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ctl.xwrite("0")
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ctl.xcheck(err, "parsing id")
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}
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count, err := queue.Drop(ctx, id, todomain, recipient)
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ctl.xcheck(err, "dropping messages from queue")
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ctl.xwrite(fmt.Sprintf("%d", count))
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ctl.xwriteok()
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case "queuedump":
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/* protocol:
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> "queuedump"
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> id
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< "ok" or error
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< stream
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*/
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idstr := ctl.xread()
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id, err := strconv.ParseInt(idstr, 10, 64)
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if err != nil {
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ctl.xcheck(err, "parsing id")
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}
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mr, err := queue.OpenMessage(ctx, id)
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ctl.xcheck(err, "opening message")
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defer func() {
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err := mr.Close()
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log.Check(err, "closing message from queue")
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}()
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ctl.xwriteok()
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ctl.xstreamfrom(mr)
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case "importmaildir", "importmbox":
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mbox := cmd == "importmbox"
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importctl(ctx, ctl, mbox)
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case "domainadd":
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/* protocol:
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> "domainadd"
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> domain
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> account
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> localpart
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< "ok" or error
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*/
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domain := ctl.xread()
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account := ctl.xread()
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localpart := ctl.xread()
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d, err := dns.ParseDomain(domain)
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ctl.xcheck(err, "parsing domain")
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err = mox.DomainAdd(ctx, d, account, smtp.Localpart(localpart))
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ctl.xcheck(err, "adding domain")
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ctl.xwriteok()
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case "domainrm":
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/* protocol:
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> "domainrm"
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> domain
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< "ok" or error
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*/
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domain := ctl.xread()
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d, err := dns.ParseDomain(domain)
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ctl.xcheck(err, "parsing domain")
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err = mox.DomainRemove(ctx, d)
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ctl.xcheck(err, "removing domain")
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ctl.xwriteok()
|
|
|
|
case "accountadd":
|
|
/* protocol:
|
|
> "accountadd"
|
|
> account
|
|
> address
|
|
< "ok" or error
|
|
*/
|
|
account := ctl.xread()
|
|
address := ctl.xread()
|
|
err := mox.AccountAdd(ctx, account, address)
|
|
ctl.xcheck(err, "adding account")
|
|
ctl.xwriteok()
|
|
|
|
case "accountrm":
|
|
/* protocol:
|
|
> "accountrm"
|
|
> account
|
|
< "ok" or error
|
|
*/
|
|
account := ctl.xread()
|
|
err := mox.AccountRemove(ctx, account)
|
|
ctl.xcheck(err, "removing account")
|
|
ctl.xwriteok()
|
|
|
|
case "addressadd":
|
|
/* protocol:
|
|
> "addressadd"
|
|
> address
|
|
> account
|
|
< "ok" or error
|
|
*/
|
|
address := ctl.xread()
|
|
account := ctl.xread()
|
|
err := mox.AddressAdd(ctx, address, account)
|
|
ctl.xcheck(err, "adding address")
|
|
ctl.xwriteok()
|
|
|
|
case "addressrm":
|
|
/* protocol:
|
|
> "addressrm"
|
|
> address
|
|
< "ok" or error
|
|
*/
|
|
address := ctl.xread()
|
|
err := mox.AddressRemove(ctx, address)
|
|
ctl.xcheck(err, "removing address")
|
|
ctl.xwriteok()
|
|
|
|
case "loglevels":
|
|
/* protocol:
|
|
> "loglevels"
|
|
< "ok"
|
|
< stream
|
|
*/
|
|
ctl.xwriteok()
|
|
l := mox.Conf.LogLevels()
|
|
keys := []string{}
|
|
for k := range l {
|
|
keys = append(keys, k)
|
|
}
|
|
sort.Slice(keys, func(i, j int) bool {
|
|
return keys[i] < keys[j]
|
|
})
|
|
s := ""
|
|
for _, k := range keys {
|
|
ks := k
|
|
if ks == "" {
|
|
ks = "(default)"
|
|
}
|
|
s += ks + ": " + mlog.LevelStrings[l[k]] + "\n"
|
|
}
|
|
ctl.xstreamfrom(strings.NewReader(s))
|
|
|
|
case "setloglevels":
|
|
/* protocol:
|
|
> "setloglevels"
|
|
> pkg
|
|
> level (if empty, log level for pkg will be unset)
|
|
< "ok" or error
|
|
*/
|
|
pkg := ctl.xread()
|
|
levelstr := ctl.xread()
|
|
if levelstr == "" {
|
|
mox.Conf.LogLevelRemove(pkg)
|
|
} else {
|
|
level, ok := mlog.Levels[levelstr]
|
|
if !ok {
|
|
ctl.xerror("bad level")
|
|
}
|
|
mox.Conf.LogLevelSet(pkg, level)
|
|
}
|
|
ctl.xwriteok()
|
|
|
|
case "retrain":
|
|
/* protocol:
|
|
> "retrain"
|
|
> account
|
|
< "ok" or error
|
|
*/
|
|
account := ctl.xread()
|
|
acc, err := store.OpenAccount(account)
|
|
ctl.xcheck(err, "open account")
|
|
|
|
acc.WithWLock(func() {
|
|
conf, _ := acc.Conf()
|
|
if conf.JunkFilter == nil {
|
|
ctl.xcheck(store.ErrNoJunkFilter, "looking for junk filter")
|
|
}
|
|
|
|
// Remove existing junk filter files.
|
|
basePath := mox.DataDirPath("accounts")
|
|
dbPath := filepath.Join(basePath, acc.Name, "junkfilter.db")
|
|
bloomPath := filepath.Join(basePath, acc.Name, "junkfilter.bloom")
|
|
err := os.Remove(dbPath)
|
|
log.Check(err, "removing old junkfilter database file", mlog.Field("path", dbPath))
|
|
err = os.Remove(bloomPath)
|
|
log.Check(err, "removing old junkfilter bloom filter file", mlog.Field("path", bloomPath))
|
|
|
|
// Open junk filter, this creates new files.
|
|
jf, _, err := acc.OpenJunkFilter(ctx, ctl.log)
|
|
ctl.xcheck(err, "open new junk filter")
|
|
defer func() {
|
|
if jf == nil {
|
|
return
|
|
}
|
|
err := jf.Close()
|
|
log.Check(err, "closing junk filter during cleanup")
|
|
}()
|
|
|
|
// Read through messages with junk or nonjunk flag set, and train them.
|
|
var total, trained int
|
|
q := bstore.QueryDB[store.Message](ctx, acc.DB)
|
|
err = q.ForEach(func(m store.Message) error {
|
|
total++
|
|
ok, err := acc.TrainMessage(ctx, ctl.log, jf, m)
|
|
if ok {
|
|
trained++
|
|
}
|
|
return err
|
|
})
|
|
ctl.xcheck(err, "training messages")
|
|
ctl.log.Info("retrained messages", mlog.Field("total", total), mlog.Field("trained", trained))
|
|
|
|
// Close junk filter, marking success.
|
|
err = jf.Close()
|
|
jf = nil
|
|
ctl.xcheck(err, "closing junk filter")
|
|
})
|
|
|
|
ctl.xwriteok()
|
|
|
|
case "backup":
|
|
backupctl(ctx, ctl)
|
|
|
|
default:
|
|
log.Info("unrecognized command", mlog.Field("cmd", cmd))
|
|
ctl.xwrite("unrecognized command")
|
|
return
|
|
}
|
|
}
|