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graval_test.go
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package graval_test
import (
"bytes"
"crypto/tls"
"errors"
"fmt"
"io"
"io/ioutil"
"net"
"net/textproto"
"os"
"runtime"
"strconv"
"strings"
"time"
"github.com/jehiah/go-strftime"
"github.com/koofr/go-netutils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
. "github.com/koofr/graval"
"github.com/koofr/graval/memory"
)
func generateCert() (cert *tls.Certificate, err error) {
organization := "Test"
host := "localhost"
validFor := 365 * 24 * time.Hour
rsaBits := 512
certBytes, keyBytes, err := netutils.GenerateCert(organization, host, validFor, rsaBits)
if err != nil {
return
}
c, err := tls.X509KeyPair(certBytes, keyBytes)
if err != nil {
return
}
cert = &c
return
}
type testVariant struct {
name string
cryptoConfig *CryptoConfig
clientExplicitTls bool
clientImplicitTls bool
}
var _ = Describe("Graval", func() {
var host string = "127.0.0.1"
var addr string
var files map[string]*memory.MemoryFile
var server *FTPServer
var clientConn net.Conn
var c *textproto.Conn
quiet := os.Getenv("QUIET") != ""
cert, certErr := generateCert()
if certErr != nil {
panic(certErr)
}
tlsConfig := &tls.Config{
Certificates: []tls.Certificate{*cert},
MinVersion: tls.VersionTLS11,
MaxVersion: tls.VersionTLS11,
}
tlsClientConfig := &tls.Config{
InsecureSkipVerify: true,
MinVersion: tls.VersionTLS11,
MaxVersion: tls.VersionTLS11,
}
variants := []*testVariant{
{
name: "Plain FTP",
cryptoConfig: &CryptoConfig{
Implicit: false,
Force: false,
TlsConfig: nil,
},
clientExplicitTls: false,
clientImplicitTls: false,
},
{
name: "Optional FTPES (client FTP)",
cryptoConfig: &CryptoConfig{
Implicit: false,
Force: false,
TlsConfig: tlsConfig,
},
clientExplicitTls: false,
clientImplicitTls: false,
},
{
name: "Optional FTPES (client FTPES)",
cryptoConfig: &CryptoConfig{
Implicit: false,
Force: false,
TlsConfig: tlsConfig,
},
clientExplicitTls: true,
clientImplicitTls: false,
},
{
name: "Forced FTPES",
cryptoConfig: &CryptoConfig{
Implicit: false,
Force: true,
TlsConfig: tlsConfig,
},
clientExplicitTls: true,
clientImplicitTls: false,
},
{
name: "FTPS",
cryptoConfig: &CryptoConfig{
Implicit: true,
Force: false,
TlsConfig: tlsConfig,
},
clientExplicitTls: false,
clientImplicitTls: true,
},
}
for _, tv := range variants {
variant := tv
Describe(variant.name, func() {
cmd := func(format string, args ...interface{}) {
_, err := c.Cmd(format, args...)
ExpectWithOffset(3, err).NotTo(HaveOccurred())
}
getres := func(format string, args ...interface{}) func(int) (string, error) {
return func(code int) (string, error) {
cmd(format, args...)
_, lineRes, err := c.ReadResponse(code)
ExpectWithOffset(2, err).NotTo(HaveOccurred())
return lineRes, err
}
}
res := func(format string, args ...interface{}) func(int, string) {
return func(code int, line string) {
lineRes, err := getres(format, args...)(code)
if err != nil {
return
}
ExpectWithOffset(1, lineRes).To(Equal(line))
}
}
resonly := func(code int, line string) {
_, lineRes, err := c.ReadResponse(code)
ExpectWithOffset(1, err).NotTo(HaveOccurred())
if err != nil {
return
}
ExpectWithOffset(1, lineRes).To(Equal(line))
}
login := func() {
res("USER user")(331, "User name ok, password required")
res("PASS password")(230, "Password ok, continue")
}
parsePasv := func(line string) (addr string, err error) {
start := strings.Index(line, "(")
if start == -1 {
err = errors.New("Invalid PASV response format")
return
}
end := strings.LastIndex(line, ")")
if end == -1 {
err = errors.New("Invalid PASV response format")
return
}
pasvData := strings.Split(line[start+1:end], ",")
if len(pasvData) != 6 {
err = errors.New("Invalid PASV response format")
return
}
ip := fmt.Sprintf("%s.%s.%s.%s", pasvData[0], pasvData[1], pasvData[2], pasvData[3])
portPart1, err1 := strconv.Atoi(pasvData[4])
if err1 != nil {
err = err1
return
}
portPart2, err2 := strconv.Atoi(pasvData[5])
if err2 != nil {
err = err2
return
}
port := portPart1*256 + portPart2
addr = fmt.Sprintf("%s:%d", ip, port)
return
}
parseEpsv := func(line string) (addr string, err error) {
start := strings.Index(line, "|||")
if start == -1 {
err = errors.New("Invalid EPSV response format")
return
}
end := strings.LastIndex(line, "|")
if end == -1 {
err = errors.New("Invalid EPSV response format")
return
}
port, err := strconv.Atoi(line[start+3 : end])
if err != nil {
return
}
addr = fmt.Sprintf("%s:%d", host, port)
return
}
pasvConn := func() (conn net.Conn, err error) {
line, err := getres("PASV")(227)
if err != nil {
return
}
addr, err = parsePasv(line)
if err != nil {
return
}
conn, err = net.Dial("tcp", addr)
return
}
epsvConn := func() (conn net.Conn, err error) {
line, err := getres("EPSV")(229)
if err != nil {
return
}
addr, err = parseEpsv(line)
if err != nil {
return
}
conn, err = net.Dial("tcp", addr)
return
}
portConn := func() (conn net.Conn, err error) {
host := "127.0.0.1"
laddr, err := net.ResolveTCPAddr("tcp", host+":0")
if !Expect(err).NotTo(HaveOccurred()) {
return
}
listener, err := net.ListenTCP("tcp4", laddr)
if !Expect(err).NotTo(HaveOccurred()) {
return
}
port := listener.Addr().(*net.TCPAddr).Port
connChan := make(chan *net.TCPConn)
defer func() {
if conn != nil {
conn.Close()
}
}()
go func() {
conn, err := listener.AcceptTCP()
Expect(err).NotTo(HaveOccurred())
connChan <- conn
}()
p1 := port / 256
p2 := port - (p1 * 256)
quads := strings.Split(host, ".")
target := fmt.Sprintf("%s,%s,%s,%s,%d,%d", quads[0], quads[1], quads[2], quads[3], p1, p2)
res("PORT %s", target)(200, fmt.Sprintf("Connection established (%d)", port))
conn = <-connChan
return
}
eprtConn := func() (conn net.Conn, err error) {
host := "127.0.0.1"
laddr, err := net.ResolveTCPAddr("tcp", host+":0")
if !Expect(err).NotTo(HaveOccurred()) {
return
}
listener, err := net.ListenTCP("tcp4", laddr)
if !Expect(err).NotTo(HaveOccurred()) {
return
}
port := listener.Addr().(*net.TCPAddr).Port
connChan := make(chan *net.TCPConn)
defer func() {
if conn != nil {
conn.Close()
}
}()
go func() {
conn, err := listener.AcceptTCP()
Expect(err).NotTo(HaveOccurred())
connChan <- conn
}()
res("EPRT |1|%s|%d|", host, port)(200, fmt.Sprintf("Connection established (%d)", port))
conn = <-connChan
return
}
resdatapostls := func(position int64, useTls bool, format string, args ...interface{}) ([]byte, error) {
conn, err := pasvConn()
if !Expect(err).NotTo(HaveOccurred()) {
return nil, err
}
defer conn.Close()
if useTls {
conn = tls.Client(conn, tlsClientConfig)
}
if position != -1 {
res("REST %d", position)(350, "Requested file action pending further information")
}
res(format, args...)(125, "Data connection already open. Transfer starting.")
bytes, err := ioutil.ReadAll(conn)
if !Expect(err).NotTo(HaveOccurred()) {
return nil, err
}
resonly(226, "Transfer complete.")
return bytes, nil
}
resdatapos := func(position int64, format string, args ...interface{}) ([]byte, error) {
return resdatapostls(position, false, format, args...)
}
resdata := func(format string, args ...interface{}) ([]byte, error) {
return resdatapos(0, format, args...)
}
stor := func(path string, reader io.Reader) error {
conn, err := pasvConn()
if !Expect(err).NotTo(HaveOccurred()) {
return err
}
res("STOR %s", path)(150, "Data transfer starting")
_, err = io.Copy(conn, reader)
if !Expect(err).NotTo(HaveOccurred()) {
conn.Close()
return err
}
conn.Close()
resonly(226, "Transfer complete.")
return nil
}
clientTlsUpgrade := func() {
clientConn = tls.Client(clientConn, tlsClientConfig)
c = textproto.NewConn(clientConn)
}
clientConnect := func() {
var err error
clientConn, err = net.Dial("tcp", addr)
Expect(err).NotTo(HaveOccurred())
c = textproto.NewConn(clientConn)
if variant.clientImplicitTls {
clientTlsUpgrade()
}
_, _, err = c.ReadResponse(220)
Expect(err).NotTo(HaveOccurred())
}
BeforeEach(func() {
port, err := netutils.UnusedPort()
Expect(err).NotTo(HaveOccurred())
files = map[string]*memory.MemoryFile{
"/": &memory.MemoryFile{NewDirItem(""), nil},
"/dir": &memory.MemoryFile{NewDirItem("dir"), nil},
"/dir/subdir": &memory.MemoryFile{NewDirItem("subdir"), nil},
"/file": &memory.MemoryFile{NewFileItem("file", 42, time.Date(2015, 1, 7, 14, 21, 0, 0, time.UTC)), make([]byte, 42)},
}
factory := &memory.MemoryDriverFactory{files, "user", "password"}
server = NewFTPServer(&FTPServerOpts{
ServerName: "Test FTP server",
Factory: factory,
Hostname: host,
Port: port,
PassiveOpts: &PassiveOpts{
ListenAddress: host,
NatAddress: host,
PassivePorts: &PassivePorts{
Low: 42000,
High: 45000,
},
},
CryptoConfig: variant.cryptoConfig,
Quiet: quiet,
})
go func() {
err1 := server.ListenAndServe()
Expect(err1).NotTo(HaveOccurred())
}()
addr = fmt.Sprintf("%s:%d", host, port)
ok := netutils.Await(addr, 10*time.Millisecond, 2*time.Second)
Expect(ok).To(BeTrue())
clientConnect()
if variant.clientExplicitTls {
res("AUTH TLS")(234, "AUTH TLS successful.")
clientTlsUpgrade()
}
})
AfterEach(func() {
c.Close()
server.Close()
})
Describe("Commands", func() {
Describe("ABOR", func() {
It("ABOR", func() {
res("ABOR")(200, "OK")
})
})
Describe("ALLO", func() {
It("ALLO", func() {
res("ALLO")(202, "Obsolete")
})
})
Describe("AUTH", func() {
It("AUTH", func() {
res("AUTH")(553, "action aborted, required param missing")
})
if variant.clientExplicitTls || variant.clientImplicitTls {
It("AUTH TLS", func() {
res("AUTH TLS")(503, "Already using TLS.")
})
} else {
if variant.cryptoConfig.TlsConfig != nil {
It("AUTH TLS", func() {
res("AUTH TLS")(234, "AUTH TLS successful.")
clientTlsUpgrade()
res("NOOP")(200, "OK")
})
It("AUTH TLS-C", func() {
res("AUTH TLS-C")(234, "AUTH TLS-C successful.")
clientTlsUpgrade()
res("NOOP")(200, "OK")
})
It("AUTH SSL", func() {
res("AUTH SSL")(234, "AUTH SSL successful.")
clientTlsUpgrade()
res("NOOP")(200, "OK")
})
It("AUTH TLS-P", func() {
res("AUTH TLS-P")(234, "AUTH TLS-P successful.")
clientTlsUpgrade()
res("NOOP")(200, "OK")
})
It("AUTH X", func() {
res("AUTH X")(502, "Unrecognized encryption type (use TLS or SSL).")
})
} else {
It("AUTH TLS", func() {
res("AUTH TLS")(500, "Command not found")
})
}
}
})
Describe("CDUP", func() {
It("CDUP", func() {
res("CDUP")(530, "not logged in")
})
It("CDUP", func() {
login()
res("CDUP")(250, "Directory changed to /")
})
It("CDUP", func() {
login()
res("CWD dir")(250, "Directory changed to /dir")
res("CWD subdir")(250, "Directory changed to /dir/subdir")
res("CDUP")(250, "Directory changed to /dir")
res("CDUP")(250, "Directory changed to /")
})
})
Describe("CWD", func() {
It("CWD", func() {
res("CWD")(553, "action aborted, required param missing")
})
It("CWD dir", func() {
res("CWD dir")(530, "not logged in")
})
It("CWD dir", func() {
login()
res("CWD dir")(250, "Directory changed to /dir")
})
It("CWD /dir", func() {
login()
res("CWD /dir")(250, "Directory changed to /dir")
})
It("CWD subdir", func() {
login()
res("CWD subdir")(550, "Action not taken")
})
It("CWD /dir/subdir", func() {
login()
res("CWD /dir/subdir")(250, "Directory changed to /dir/subdir")
})
})
Describe("DELE", func() {
It("DELE", func() {
res("DELE")(553, "action aborted, required param missing")
})
It("DELE file", func() {
res("DELE file")(530, "not logged in")
})
It("DELE file", func() {
login()
res("DELE file")(250, "File deleted")
})
It("DELE nonexisting", func() {
login()
res("DELE nonexisting")(550, "Action not taken")
})
It("DELE dir", func() {
login()
res("DELE dir")(550, "Action not taken")
})
})
Describe("EPRT", func() {
It("EPRT", func() {
res("EPRT")(553, "action aborted, required param missing")
})
It("EPRT", func() {
res("EPRT |1|127.0.0.1|6275|")(530, "not logged in")
})
It("EPRT", func() {
login()
conn, err := eprtConn()
Expect(err).NotTo(HaveOccurred())
conn.Close()
})
It("EPRT", func() {
login()
host := "127.0.0.1"
port, err := netutils.UnusedPort()
Expect(err).NotTo(HaveOccurred())
res("EPRT |1|%s|%d|", host, port)(425, "Data connection failed")
})
It("EPRT", func() {
login()
res("EPRT |42|invalid|invalid|")(522, "Network protocol not supported, use (1,2)")
})
})
Describe("EPSV", func() {
It("EPSV", func() {
res("EPSV")(530, "not logged in")
})
It("EPSV", func() {
login()
conn, err := epsvConn()
Expect(err).NotTo(HaveOccurred())
conn.Close()
})
It("EPSV EPSV", func() {
login()
conn, err := epsvConn()
Expect(err).NotTo(HaveOccurred())
readErrChan := make(chan error)
go func() {
_, readErr := conn.Read([]byte{0})
readErrChan <- readErr
}()
conn1, err := epsvConn()
Expect(err).NotTo(HaveOccurred())
readErr := <-readErrChan
Expect(readErr).To(HaveOccurred())
conn1.Close()
})
It("EPSV tcp tcp", func() {
login()
line, err := getres("EPSV")(229)
Expect(err).NotTo(HaveOccurred())
addr, err = parseEpsv(line)
Expect(err).NotTo(HaveOccurred())
conn, err := net.Dial("tcp", addr)
Expect(err).NotTo(HaveOccurred())
conn.Close()
// give server goroutine a change to accept conn and close listener
runtime.Gosched()
time.Sleep(10 * time.Millisecond)
conn, err = net.Dial("tcp", addr)
Expect(err).To(HaveOccurred())
})
})
Describe("FEAT", func() {
It("FEAT", func() {
res("FEAT")(211, "Features supported:\n AUTH TLS\n AUTH SSL\n EPRT\n EPSV\n MDTM\n PBSZ\n PROT\n SIZE\n UTF8\nEnd FEAT.")
})
})
Describe("LIST", func() {
It("LIST", func() {
res("LIST")(530, "not logged in")
})
It("LIST dir", func() {
res("LIST dir")(530, "not logged in")
})
It("LIST", func() {
login()
res("LIST")(425, "Can't open data connection.")
})
It("LIST", func() {
login()
bytes, err := resdata("LIST")
Expect(err).NotTo(HaveOccurred())
Expect(string(bytes)).To(Equal(fmt.Sprintf(
"drw-rw-rw- 1 owner group 0 %s dir\r\n"+
"-rw-rw-rw- 1 owner group 42 Jan 07 14:21 file\r\n"+
"\r\n",
strftime.Format("%b %d %H:%M", files["/dir"].File.ModTime()))))
})
It("LIST dir", func() {
login()
bytes, err := resdata("LIST dir")
Expect(err).NotTo(HaveOccurred())
Expect(string(bytes)).To(Equal(fmt.Sprintf(
"drw-rw-rw- 1 owner group 0 %s subdir\r\n"+
"\r\n",
strftime.Format("%b %d %H:%M", files["/dir/subdir"].File.ModTime()))))
})
It("LIST nonexisting", func() {
login()
conn, err := pasvConn()
Expect(err).NotTo(HaveOccurred())
defer conn.Close()
res("LIST nonexisting")(450, "File not available")
})
It("LIST LIST", func() {
login()
_, err := resdata("LIST")
Expect(err).NotTo(HaveOccurred())
res("LIST")(425, "Can't open data connection.")
})
})
Describe("MDTM", func() {
It("MDTM", func() {
res("MDTM")(553, "action aborted, required param missing")
})
It("MDTM file", func() {
res("MDTM file")(530, "not logged in")
})
It("MDTM file", func() {
login()
res("MDTM file")(213, "20150107142100")
})
It("MDTM nonexisting", func() {
login()
res("MDTM nonexisting")(450, "File not available")
})
It("MDTM dir", func() {
login()
res("MDTM dir")(213, strftime.Format("%Y%m%d%H%M%S", files["/dir"].File.ModTime()))
})
})
Describe("MKD", func() {
It("MKD", func() {
res("MKD")(553, "action aborted, required param missing")
})
It("MKD newdir", func() {
res("MKD newdir")(530, "not logged in")
})
It("MKD newdir", func() {
login()
res("MKD newdir")(257, "Directory created")
})
It("MKD file", func() {
login()
res("MKD file")(550, "Action not taken")
})
It("MKD dir", func() {
login()
res("MKD dir")(550, "Action not taken")
})
})
Describe("MODE", func() {
It("MODE", func() {
res("MODE")(553, "action aborted, required param missing")
})
It("MODE S", func() {
res("MODE S")(530, "not logged in")
})
It("MODE S", func() {
login()
res("MODE S")(200, "OK")
})
It("MODE file", func() {
login()
res("MODE file")(504, "MODE is an obsolete command")
})
})
Describe("NLST", func() {
It("NLST", func() {
res("NLST")(530, "not logged in")
})
It("NLST dir", func() {
res("NLST dir")(530, "not logged in")
})
It("NLST", func() {
login()
res("NLST")(425, "Can't open data connection.")
})
It("NLST", func() {
login()
bytes, err := resdata("NLST")
Expect(err).NotTo(HaveOccurred())
Expect(string(bytes)).To(Equal("dir\r\nfile\r\n\r\n"))
})
It("NLST dir", func() {
login()
bytes, err := resdata("NLST dir")
Expect(err).NotTo(HaveOccurred())
Expect(string(bytes)).To(Equal("subdir\r\n\r\n"))
})
It("NLST nonexisting", func() {
login()
conn, err := pasvConn()
Expect(err).NotTo(HaveOccurred())
defer conn.Close()
res("NLST nonexisting")(450, "File not available")
})
It("NLST NLST", func() {
login()
_, err := resdata("NLST")
Expect(err).NotTo(HaveOccurred())
res("NLST")(425, "Can't open data connection.")
})
})
Describe("NOOP", func() {
It("NOOP", func() {
res("NOOP")(200, "OK")
})
})
Describe("OPTS", func() {
It("OPTS", func() {
res("OPTS")(530, "not logged in")
})
It("OPTS", func() {
login()
res("OPTS")(500, "Command not found")
})
It("OPTS UTF8 ON", func() {
login()
res("OPTS UTF8 ON")(200, "OK")
})
It("OPTS UTF8", func() {
login()
res("OPTS UTF8")(200, "OK")
})
})
Describe("PASS", func() {
It("PASS", func() {
res("PASS")(553, "action aborted, required param missing")
})
It("PASS password", func() {
res("PASS password")(530, "Incorrect password, not logged in")
})
It("USER user PASS password", func() {
res("USER user")(331, "User name ok, password required")
res("PASS password")(230, "Password ok, continue")
})
})
Describe("PASV", func() {
It("PASV", func() {
res("PASV")(530, "not logged in")
})
It("PASV", func() {
login()
conn, err := pasvConn()
Expect(err).NotTo(HaveOccurred())
conn.Close()
})
It("PASV PASV", func() {
login()
conn, err := pasvConn()
Expect(err).NotTo(HaveOccurred())
readErrChan := make(chan error)
go func() {
_, readErr := conn.Read([]byte{0})
readErrChan <- readErr
}()
conn1, err := pasvConn()
Expect(err).NotTo(HaveOccurred())
readErr := <-readErrChan
Expect(readErr).To(HaveOccurred())
conn1.Close()
})
It("PASV PORT", func() {
login()
conn, err := pasvConn()
Expect(err).NotTo(HaveOccurred())
readErrChan := make(chan error)
go func() {
_, readErr := conn.Read([]byte{0})
readErrChan <- readErr
}()
conn1, err := portConn()