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ftp: fix error of ftp.connect() (fix parts of #7914) (#7915)

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yuyi 2021-01-07 01:53:25 +08:00 committed by GitHub
parent 5683af821e
commit f751271e4e
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1 changed files with 40 additions and 52 deletions
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92
vlib/net/ftp/ftp.v
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@ -17,7 +17,6 @@ basic ftp module
dtp.close()
ftp.close()
*/
import net
import io
@ -37,15 +36,15 @@ const (
struct DTP {
mut:
conn net.TcpConn
conn net.TcpConn
reader io.BufferedReader
ip string
port int
ip string
port int
}
fn (mut dtp DTP) read() ?[]byte {
mut data := []byte{len: 1024}
dtp.reader.read(mut data)?
dtp.reader.read(mut data) ?
return data
}
@ -56,7 +55,7 @@ fn (dtp DTP) close() {
struct FTP {
mut:
conn net.TcpConn
reader io.BufferedReader
reader io.BufferedReader
buffer_size int
}
@ -70,11 +69,11 @@ fn (mut ftp FTP) write(data string) ? {
$if debug {
println('FTP.v >>> $data')
}
ftp.conn.write('$data\r\n'.bytes())?
ftp.conn.write('$data\r\n'.bytes()) ?
}
fn (mut ftp FTP) read() ?(int, string) {
mut data := ftp.reader.read_line()?
mut data := ftp.reader.read_line() ?
$if debug {
println('FTP.v <<< $data')
}
@ -84,7 +83,7 @@ fn (mut ftp FTP) read() ?(int, string) {
code := data[..3].int()
if data[3] == `-` {
for {
data = ftp.reader.read_line()?
data = ftp.reader.read_line() ?
if data[..3].int() == code && data[3] != `-` {
break
}
@ -94,13 +93,12 @@ fn (mut ftp FTP) read() ?(int, string) {
}
pub fn (mut ftp FTP) connect(ip string) ?bool {
conn := net.dial_tcp('$ip:21')?
ftp.conn = conn
code, _ := ftp.read()?
ftp.conn = net.dial_tcp('$ip:21') ?
ftp.reader = io.new_buffered_reader(reader: io.make_reader(ftp.conn))
code, _ := ftp.read() ?
if code == connected {
return true
}
ftp.reader = io.new_buffered_reader(reader: io.make_reader(ftp.conn))
return false
}
@ -111,7 +109,7 @@ pub fn (mut ftp FTP) login(user string, passwd string) ?bool {
}
return false
}
mut code, _ := ftp.read()?
mut code, _ := ftp.read() ?
if code == logged_in {
return true
}
@ -124,21 +122,21 @@ pub fn (mut ftp FTP) login(user string, passwd string) ?bool {
}
return false
}
code, _ = ftp.read()?
code, _ = ftp.read() ?
if code == logged_in {
return true
}
return false
}
pub fn ( mut ftp FTP) close() ? {
ftp.write('QUIT')?
pub fn (mut ftp FTP) close() ? {
ftp.write('QUIT') ?
ftp.conn.close()
}
pub fn ( mut ftp FTP) pwd() ?string {
ftp.write('PWD')?
_, data := ftp.read()?
pub fn (mut ftp FTP) pwd() ?string {
ftp.write('PWD') ?
_, data := ftp.read() ?
spl := data.split('"') // "
if spl.len >= 2 {
return spl[1]
@ -146,11 +144,9 @@ pub fn ( mut ftp FTP) pwd() ?string {
return data
}
pub fn ( mut ftp FTP) cd(dir string) ? {
ftp.write('CWD $dir') or {
return
}
mut code, mut data := ftp.read()?
pub fn (mut ftp FTP) cd(dir string) ? {
ftp.write('CWD $dir') or { return }
mut code, mut data := ftp.read() ?
match int(code) {
denied {
$if debug {
@ -158,7 +154,7 @@ pub fn ( mut ftp FTP) cd(dir string) ? {
}
}
complete {
code, data = ftp.read()?
code, data = ftp.read() ?
}
else {}
}
@ -172,21 +168,19 @@ fn new_dtp(msg string) ?DTP {
return error('Bad message')
}
ip, port := get_host_ip_from_dtp_message(msg)
conn := net.dial_tcp('$ip:$port') or {
return error('Cannot connect to the data channel')
}
conn := net.dial_tcp('$ip:$port') or { return error('Cannot connect to the data channel') }
dtp := DTP{
conn: conn
reader: io.new_buffered_reader(reader: io.make_reader(conn))
ip: ip
port: port
}
return dtp
}
fn ( mut ftp FTP) pasv() ?DTP {
ftp.write('PASV') or {
}
code, data := ftp.read()?
fn (mut ftp FTP) pasv() ?DTP {
ftp.write('PASV') ?
code, data := ftp.read() ?
$if debug {
println('pass: $data')
}
@ -197,23 +191,20 @@ fn ( mut ftp FTP) pasv() ?DTP {
return dtp
}
pub fn ( mut ftp FTP) dir() ?[]string {
mut dtp := ftp.pasv() or {
return error('cannot establish data connection')
}
ftp.write('LIST') or {
}
code, _ := ftp.read()?
pub fn (mut ftp FTP) dir() ?[]string {
mut dtp := ftp.pasv() or { return error('Cannot establish data connection') }
ftp.write('LIST') ?
code, _ := ftp.read() ?
if code == denied {
return error('LIST denied')
return error('`LIST` denied')
}
if code != open_data_connection {
return error('data channel empty')
return error('Data channel empty')
}
list_dir := dtp.read()?
result, _ := ftp.read()?
list_dir := dtp.read() ?
result, _ := ftp.read() ?
if result != close_data_connection {
println('LIST not ok')
println('`LIST` not ok')
}
dtp.close()
mut dir := []string{}
@ -228,19 +219,16 @@ pub fn ( mut ftp FTP) dir() ?[]string {
}
pub fn (mut ftp FTP) get(file string) ?[]byte {
mut dtp := ftp.pasv() or {
return error('Cannot stablish data connection')
}
ftp.write('RETR $file') or {
}
code, _ := ftp.read()?
mut dtp := ftp.pasv() or { return error('Cannot stablish data connection') }
ftp.write('RETR $file') ?
code, _ := ftp.read() ?
if code == denied {
return error('Permission denied')
}
if code != open_data_connection {
return error('Data connection not ready')
}
blob := dtp.read()?
blob := dtp.read() ?
dtp.close()
return blob
}