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main.go
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main.go
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// Copyright 2015 Dmitry Vyukov. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package smtp
import (
"io"
"net"
"net/smtp"
"time"
)
func Fuzz(data []byte) int {
conn := &MyConn{data, false, false}
defer func() {
if !conn.closed {
panic("connection is not closed")
}
}()
c, err := smtp.NewClient(conn, "golang.org")
if err != nil {
return 0
}
defer c.Close()
if err = c.Hello("localhost"); err != nil {
return 0
}
if err = c.Auth(smtp.PlainAuth("identiry", "username", "password", "host")); err != nil {
return 1
}
if err = c.Mail("gopher@golang.org"); err != nil {
return 1
}
if err = c.Rcpt("gopher@golang.org"); err != nil {
return 1
}
w, err := c.Data()
if err != nil {
return 1
}
_, err = w.Write([]byte("message"))
if err != nil {
return 1
}
if err = w.Close(); err != nil {
return 1
}
if err = c.Quit(); err != nil {
return 1
}
return 2
}
type MyConn struct {
data []byte
closed bool
written bool
}
func (c *MyConn) Read(b []byte) (n int, err error) {
if len(c.data) == 0 {
return 0, io.EOF
}
n = copy(b, c.data)
c.data = c.data[n:]
return
}
func (c *MyConn) Write(b []byte) (n int, err error) {
c.written = true
return len(b), nil
}
func (c *MyConn) Close() error {
c.closed = true
return nil
}
func (c *MyConn) LocalAddr() net.Addr {
return &net.TCPAddr{net.IP{127, 0, 0, 1}, 49706, ""}
}
func (c *MyConn) RemoteAddr() net.Addr {
return &net.TCPAddr{net.IP{127, 0, 0, 1}, 49706, ""}
}
func (c *MyConn) SetDeadline(t time.Time) error {
return nil
}
func (c *MyConn) SetReadDeadline(t time.Time) error {
return nil
}
func (c *MyConn) SetWriteDeadline(t time.Time) error {
return nil
}