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wireprotocol.go
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/*******************************************************************************
The MIT License (MIT)
Copyright (c) 2013-2019 Hajime Nakagami
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*******************************************************************************/
package firebirdsql
import (
"bufio"
"bytes"
"container/list"
"crypto/rc4"
"crypto/sha256"
"database/sql/driver"
"encoding/hex"
"errors"
"fmt"
"github.com/kardianos/osext"
"gitlab.com/nyarla/go-crypt"
"golang.org/x/crypto/chacha20"
"golang.org/x/text/encoding/charmap"
"golang.org/x/text/encoding/japanese"
"golang.org/x/text/encoding/korean"
"golang.org/x/text/encoding/simplifiedchinese"
"golang.org/x/text/encoding/traditionalchinese"
"math/big"
"net"
"os"
"strconv"
"strings"
"time"
//"unsafe"
)
const (
PLUGIN_LIST = "Srp256,Srp,Legacy_Auth"
BUFFER_LEN = 1024
MAX_CHAR_LENGTH = 32767
BLOB_SEGMENT_SIZE = 32000
)
func _INFO_SQL_SELECT_DESCRIBE_VARS() []byte {
return []byte{
isc_info_sql_select,
isc_info_sql_describe_vars,
isc_info_sql_sqlda_seq,
isc_info_sql_type,
isc_info_sql_sub_type,
isc_info_sql_scale,
isc_info_sql_length,
isc_info_sql_null_ind,
isc_info_sql_field,
isc_info_sql_relation,
isc_info_sql_owner,
isc_info_sql_alias,
isc_info_sql_describe_end,
}
}
type wireChannel struct {
conn net.Conn
reader *bufio.Reader
writer *bufio.Writer
plugin string
rc4reader *rc4.Cipher
rc4writer *rc4.Cipher
chacha20reader *chacha20.Cipher
chacha20writer *chacha20.Cipher
}
func newWireChannel(conn net.Conn) (wireChannel, error) {
var err error
c := new(wireChannel)
c.conn = conn
c.reader = bufio.NewReader(c.conn)
c.writer = bufio.NewWriter(c.conn)
return *c, err
}
func (c *wireChannel) setCryptKey(plugin string, sessionKey []byte, nonce []byte) (err error) {
c.plugin = plugin
if plugin == "ChaCha" {
digest := sha256.New()
digest.Write(sessionKey)
key := digest.Sum(nil)
c.chacha20reader, err = chacha20.NewUnauthenticatedCipher(key, nonce)
c.chacha20writer, err = chacha20.NewUnauthenticatedCipher(key, nonce)
} else if plugin == "Arc4" {
c.rc4reader, err = rc4.NewCipher(sessionKey)
c.rc4writer, err = rc4.NewCipher(sessionKey)
} else {
err = errors.New(fmt.Sprintf("Unknown wire encrypto plugin name:%s", plugin))
}
return
}
func (c *wireChannel) Read(buf []byte) (n int, err error) {
if c.plugin != "" {
src := make([]byte, len(buf))
n, err = c.reader.Read(src)
if c.plugin == "ChaCha" {
c.chacha20reader.XORKeyStream(buf, src[0:n])
} else if c.plugin == "Arc4" {
c.rc4reader.XORKeyStream(buf, src[0:n])
}
return
}
return c.reader.Read(buf)
}
func (c *wireChannel) Write(buf []byte) (n int, err error) {
if c.plugin != "" {
dst := make([]byte, len(buf))
if c.plugin == "ChaCha" {
c.chacha20writer.XORKeyStream(dst, buf)
} else if c.plugin == "Arc4" {
c.rc4writer.XORKeyStream(dst, buf)
}
written := 0
for written < len(buf) {
n, err = c.writer.Write(dst[written:])
if err != nil {
return
}
written += n
}
n = written
} else {
n, err = c.writer.Write(buf)
}
return
}
func (c *wireChannel) Flush() error {
return c.writer.Flush()
}
func (c *wireChannel) Close() error {
return c.conn.Close()
}
type wireProtocol struct {
buf []byte
conn wireChannel
dbHandle int32
addr string
protocolVersion int32
acceptArchitecture int32
acceptType int32
lazyResponseCount int
pluginName string
user string
password string
authData []byte
charset string
charsetByteLen int
// Time Zone
timezone string
}
func newWireProtocol(addr string, timezone string, charset string) (*wireProtocol, error) {
p := new(wireProtocol)
p.buf = make([]byte, 0, BUFFER_LEN)
p.addr = addr
conn, err := net.Dial("tcp", p.addr)
if err != nil {
return nil, err
}
p.conn, err = newWireChannel(conn)
p.timezone = timezone
p.charset = charset
p.charsetLen()
return p, err
}
// charsetLen sets the length of character depending the charset to get the correct size of column
func (p *wireProtocol) charsetLen() {
// all ISO8859_X and WIN125X are 1 byte character length, so omit here
// only add charset that character length is > 1
switch p.charset {
case "UNICODE_FSS", "UTF8":
p.charsetByteLen = 4
case "BIG_5", "SJIS_0208", "KSC_5601", "EUCJ_0208", "GB_2312", "KOI8R", "KOI8U":
p.charsetByteLen = 2
default:
p.charsetByteLen = 1
}
}
func (p *wireProtocol) packInt(i int32) {
// pack big endian int32
p.buf = append(p.buf, []byte{byte(i >> 24 & 0xFF), byte(i >> 16 & 0xFF), byte(i >> 8 & 0xFF), byte(i & 0xFF)}...)
}
func (p *wireProtocol) packBytes(b []byte) {
p.buf = append(p.buf, xdrBytes(b)...)
}
func (p *wireProtocol) packString(s string) {
p.buf = append(p.buf, xdrBytes([]byte(p.encodeString(s)))...)
}
func (p *wireProtocol) appendBytes(bs []byte) {
p.buf = append(p.buf, bs...)
}
func getSrpClientPublicBytes(clientPublic *big.Int) (bs []byte) {
b := bytes.NewBufferString(hex.EncodeToString(bigIntToBytes(clientPublic))).Bytes()
if len(b) > 254 {
bs = bytes.Join([][]byte{
[]byte{CNCT_specific_data, byte(255), 0}, b[:254],
[]byte{CNCT_specific_data, byte(len(b)-254) + 1, 1}, b[254:],
}, nil)
} else {
bs = bytes.Join([][]byte{
[]byte{CNCT_specific_data, byte(len(b)) + 1, 0}, b,
}, nil)
}
return bs
}
func (p *wireProtocol) uid(user string, password string, authPluginName string, wireCrypt bool, clientPublic *big.Int) []byte {
sysUser := os.Getenv("USER")
if sysUser == "" {
sysUser = os.Getenv("USERNAME")
}
hostname, _ := os.Hostname()
sysUserBytes := bytes.NewBufferString(sysUser).Bytes()
hostnameBytes := bytes.NewBufferString(hostname).Bytes()
pluginListNameBytes := bytes.NewBufferString(PLUGIN_LIST).Bytes()
pluginNameBytes := bytes.NewBufferString(authPluginName).Bytes()
userBytes := bytes.NewBufferString(strings.ToUpper(user)).Bytes()
var wireCryptByte byte
if wireCrypt {
wireCryptByte = 1
} else {
wireCryptByte = 0
}
var specific_data []byte
if authPluginName == "Srp" || authPluginName == "Srp256" {
specific_data = getSrpClientPublicBytes(clientPublic)
} else if authPluginName == "Legacy_Auth" {
b := bytes.NewBufferString(crypt.Crypt(password, "9z")[2:]).Bytes()
specific_data = bytes.Join([][]byte{
[]byte{CNCT_specific_data, byte(len(b)) + 1, 0}, b,
}, nil)
} else {
panic(fmt.Sprintf("Unknown plugin name:%s", authPluginName))
}
return bytes.Join([][]byte{
[]byte{CNCT_login, byte(len(userBytes))}, userBytes,
[]byte{CNCT_plugin_name, byte(len(pluginNameBytes))}, pluginNameBytes,
[]byte{CNCT_plugin_list, byte(len(pluginListNameBytes))}, pluginListNameBytes,
specific_data,
[]byte{CNCT_client_crypt, 4, wireCryptByte, 0, 0, 0},
[]byte{CNCT_user, byte(len(sysUserBytes))}, sysUserBytes,
[]byte{CNCT_host, byte(len(hostnameBytes))}, hostnameBytes,
[]byte{CNCT_user_verification, 0},
}, nil)
}
func (p *wireProtocol) sendPackets() (written int, err error) {
p.debugPrint("\tsendPackets():%v", p.buf)
n := 0
for written < len(p.buf) {
n, err = p.conn.Write(p.buf[written:])
if err != nil {
// error while sending the package....
err = driver.ErrBadConn
break
}
written += n
}
p.conn.Flush()
p.buf = make([]byte, 0, BUFFER_LEN)
return
}
func (p *wireProtocol) suspendBuffer() []byte {
p.debugPrint("\tsuspendBuffer():%v", p.buf)
buf := p.buf
p.buf = make([]byte, 0, BUFFER_LEN)
return buf
}
func (p *wireProtocol) resumeBuffer(buf []byte) {
p.debugPrint("\tresumeBuffer():%v", buf)
p.buf = buf
}
func (p *wireProtocol) recvPackets(n int) ([]byte, error) {
buf := make([]byte, n)
var err error
read := 0
totalRead := 0
for totalRead < n {
read, err = p.conn.Read(buf[totalRead:n])
if err != nil {
p.debugPrint("\trecvPackets():%v:%v", buf, err)
return buf, err
}
totalRead += read
}
p.debugPrint("\trecvPackets():%v:%v", buf, err)
return buf, err
}
func (p *wireProtocol) recvPacketsAlignment(n int) ([]byte, error) {
padding := n % 4
if padding > 0 {
padding = 4 - padding
}
buf, err := p.recvPackets(n + padding)
return buf[0:n], err
}
func (p *wireProtocol) _parse_status_vector() (*list.List, int, string, error) {
sql_code := 0
gds_code := 0
gds_codes := list.New()
num_arg := 0
message := ""
b, err := p.recvPackets(4)
n := bytes_to_bint32(b)
for n != isc_arg_end {
switch {
case n == isc_arg_gds:
b, err = p.recvPackets(4)
gds_code = int(bytes_to_bint32(b))
if gds_code != 0 {
gds_codes.PushBack(gds_code)
if msg, ok := errmsgs[gds_code]; ok {
message += msg
} else {
message += fmt.Sprintf("unknown gds_code: %d", gds_code)
}
num_arg = 0
}
case n == isc_arg_number:
b, err = p.recvPackets(4)
num := int(bytes_to_bint32(b))
if gds_code == 335544436 {
sql_code = num
}
num_arg++
message = strings.Replace(message, "@"+strconv.Itoa(num_arg), strconv.Itoa(num), 1)
case n == isc_arg_string:
b, err = p.recvPackets(4)
nbytes := int(bytes_to_bint32(b))
b, err = p.recvPacketsAlignment(nbytes)
s := bytes_to_str(b)
num_arg++
message = strings.Replace(message, "@"+strconv.Itoa(num_arg), s, 1)
case n == isc_arg_interpreted:
b, err = p.recvPackets(4)
nbytes := int(bytes_to_bint32(b))
b, err = p.recvPacketsAlignment(nbytes)
s := bytes_to_str(b)
message += s
case n == isc_arg_sql_state:
b, err = p.recvPackets(4)
nbytes := int(bytes_to_bint32(b))
b, err = p.recvPacketsAlignment(nbytes)
_ = bytes_to_str(b) // skip status code
}
b, err = p.recvPackets(4)
n = bytes_to_bint32(b)
}
return gds_codes, sql_code, message, err
}
func (p *wireProtocol) _parse_op_response() (int32, []byte, []byte, error) {
b, err := p.recvPackets(16)
h := bytes_to_bint32(b[0:4]) // Object handle
oid := b[4:12] // Object ID
buf_len := int(bytes_to_bint32(b[12:])) // buffer length
buf, err := p.recvPacketsAlignment(buf_len)
gds_code_list, sql_code, message, err := p._parse_status_vector()
if gds_code_list.Len() > 0 || sql_code != 0 {
err = errors.New(message)
}
return h, oid, buf, err
}
func (p *wireProtocol) _guess_wire_crypt(buf []byte) (string, []byte) {
params := map[byte][]byte{}
i := 0
for i = 0; i < len(buf); {
k := buf[i]
i++
ln := int(buf[i])
i++
v := buf[i : i+ln]
i += ln
params[k] = v
}
v, ok := params[3]
if ok {
if string(v[:7]) == "ChaCha\x00" {
return "ChaCha", v[7 : len(v)-4]
}
}
return "Arc4", nil
}
func (p *wireProtocol) _parse_connect_response(user string, password string, options map[string]string, clientPublic *big.Int, clientSecret *big.Int) (err error) {
p.debugPrint("_parse_connect_response")
b, err := p.recvPackets(4)
opcode := bytes_to_bint32(b)
for opcode == op_dummy {
b, _ = p.recvPackets(4)
opcode = bytes_to_bint32(b)
}
if opcode == op_reject {
err = errors.New("_parse_connect_response() op_reject")
return
}
if opcode == op_response {
_, _, _, err = p._parse_op_response() // error occured
return
}
b, _ = p.recvPackets(12)
p.protocolVersion = int32(b[3])
p.acceptArchitecture = bytes_to_bint32(b[4:8])
p.acceptType = bytes_to_bint32(b[8:12])
if opcode == op_cond_accept || opcode == op_accept_data {
var readLength, ln int
b, _ := p.recvPackets(4)
ln = int(bytes_to_bint32(b))
data, _ := p.recvPacketsAlignment(ln)
b, _ = p.recvPackets(4)
ln = int(bytes_to_bint32(b))
pluginName, _ := p.recvPacketsAlignment(ln)
p.pluginName = bytes_to_str(pluginName)
b, _ = p.recvPackets(4)
isAuthenticated := bytes_to_bint32(b)
readLength += 4
b, _ = p.recvPackets(4)
ln = int(bytes_to_bint32(b))
_, _ = p.recvPacketsAlignment(ln) // keys
var authData []byte
var sessionKey []byte
if isAuthenticated == 0 {
if p.pluginName == "Srp" || p.pluginName == "Srp256" {
// TODO: normalize user
if len(data) == 0 {
p.opContAuth(bigIntToBytes(clientPublic), p.pluginName, PLUGIN_LIST, "")
b, _ := p.recvPackets(4)
op := bytes_to_bint32(b)
if op == op_response {
_, _, _, err = p._parse_op_response() // error occurred
return
}
if DEBUG_SRP && op != op_cont_auth {
panic("auth error")
}
b, _ = p.recvPackets(4)
ln = int(bytes_to_bint32(b))
data, _ = p.recvPacketsAlignment(ln)
b, _ = p.recvPackets(4)
ln = int(bytes_to_bint32(b))
_, _ = p.recvPacketsAlignment(ln) // pluginName
b, _ = p.recvPackets(4)
ln = int(bytes_to_bint32(b))
_, _ = p.recvPacketsAlignment(ln) // pluginList
b, _ = p.recvPackets(4)
ln = int(bytes_to_bint32(b))
_, _ = p.recvPacketsAlignment(ln) // keys
}
ln = int(bytes_to_int16(data[:2]))
serverSalt := data[2 : ln+2]
serverPublic := bigIntFromHexString(bytes_to_str(data[4+ln:]))
authData, sessionKey = getClientProof(strings.ToUpper(user), password, serverSalt, clientPublic, serverPublic, clientSecret, p.pluginName)
if DEBUG_SRP {
fmt.Printf("pluginName=%s\nserverSalt=%s\nserverPublic(bin)=%s\nserverPublic=%s\nauthData=%v,sessionKey=%v\n",
p.pluginName, serverSalt, data[4+ln:], serverPublic, authData, sessionKey)
}
} else if p.pluginName == "Legacy_Auth" {
authData = bytes.NewBufferString(crypt.Crypt(password, "9z")[2:]).Bytes()
} else {
err = errors.New("_parse_connect_response() Unauthorized")
return
}
}
var encrypt_plugin string
var nonce []byte
if opcode == op_cond_accept {
p.opContAuth(authData, options["auth_plugin_name"], PLUGIN_LIST, "")
var buf []byte
_, _, buf, err = p.opResponse()
if err != nil {
return
}
encrypt_plugin, nonce = p._guess_wire_crypt(buf)
}
wire_crypt := true
wire_crypt, _ = strconv.ParseBool(options["wire_crypt"])
if wire_crypt && sessionKey != nil {
// Send op_crypt
p.opCrypt(encrypt_plugin)
p.conn.setCryptKey(encrypt_plugin, sessionKey, nonce)
_, _, _, err = p.opResponse()
if err != nil {
return
}
} else {
p.authData = authData // use later opAttach and opCreate
}
} else {
if opcode != op_accept {
err = errors.New("_parse_connect_response() protocol error")
return
}
}
return
}
func (p *wireProtocol) _parse_select_items(buf []byte, xsqlda []xSQLVAR) (int, error) {
var err error
var ln int
index := 0
i := 0
for item := int(buf[i]); item != isc_info_end; item = int(buf[i]) {
i++
switch item {
case isc_info_sql_sqlda_seq:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
index = int(bytes_to_int32(buf[i : i+ln]))
i += ln
case isc_info_sql_type:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
sqltype := int(bytes_to_int32(buf[i : i+ln]))
if sqltype%2 != 0 {
sqltype--
}
xsqlda[index-1].sqltype = sqltype
i += ln
case isc_info_sql_sub_type:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
xsqlda[index-1].sqlsubtype = int(bytes_to_int32(buf[i : i+ln]))
i += ln
case isc_info_sql_scale:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
xsqlda[index-1].sqlscale = int(bytes_to_int32(buf[i : i+ln]))
i += ln
case isc_info_sql_length:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
// the length defined in buffer depends on character length of charset
xsqlda[index-1].sqllen = int(bytes_to_int32(buf[i : i+ln]))
i += ln
case isc_info_sql_null_ind:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
xsqlda[index-1].null_ok = bytes_to_int32(buf[i:i+ln]) != 0
i += ln
case isc_info_sql_field:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
xsqlda[index-1].fieldname = bytes_to_str(buf[i : i+ln])
i += ln
case isc_info_sql_relation:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
xsqlda[index-1].relname = bytes_to_str(buf[i : i+ln])
i += ln
case isc_info_sql_owner:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
xsqlda[index-1].ownname = bytes_to_str(buf[i : i+ln])
i += ln
case isc_info_sql_alias:
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
xsqlda[index-1].aliasname = bytes_to_str(buf[i : i+ln])
i += ln
case isc_info_truncated:
return index, err // return next index
case isc_info_sql_describe_end:
/* NOTHING */
default:
err = errors.New(fmt.Sprintf("Invalid item [%02x] ! i=%d", buf[i], i))
break
}
}
return -1, err // no more info
}
func (p *wireProtocol) parse_xsqlda(buf []byte, stmtHandle int32) (int32, []xSQLVAR, error) {
var ln, col_len, next_index int
var err error
var stmt_type int32
var xsqlda []xSQLVAR
i := 0
for i < len(buf) {
if buf[i] == byte(isc_info_sql_stmt_type) && buf[i+1] == byte(0x04) && buf[i+2] == byte(0x00) {
i++
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
stmt_type = int32(bytes_to_int32(buf[i : i+ln]))
i += ln
} else if buf[i] == byte(isc_info_sql_select) && buf[i+1] == byte(isc_info_sql_describe_vars) {
i += 2
ln = int(bytes_to_int16(buf[i : i+2]))
i += 2
col_len = int(bytes_to_int32(buf[i : i+ln]))
xsqlda = make([]xSQLVAR, col_len)
next_index, err = p._parse_select_items(buf[i+ln:], xsqlda)
for next_index > 0 { // more describe vars
p.opInfoSql(stmtHandle,
bytes.Join([][]byte{
[]byte{isc_info_sql_sqlda_start, 2},
int16_to_bytes(int16(next_index)),
_INFO_SQL_SELECT_DESCRIBE_VARS(),
}, nil))
_, _, buf, err = p.opResponse()
// buf[:2] == []byte{0x04,0x07}
ln = int(bytes_to_int16(buf[2:4]))
// bytes_to_int(buf[4:4+l]) == col_len
next_index, err = p._parse_select_items(buf[4+ln:], xsqlda)
}
} else {
break
}
}
return stmt_type, xsqlda, err
}
func (p *wireProtocol) getBlobSegments(blobId []byte, transHandle int32) ([]byte, error) {
suspendBuf := p.suspendBuffer()
blob := []byte{}
p.opOpenBlob(blobId, transHandle)
blobHandle, _, _, err := p.opResponse()
if err != nil {
p.resumeBuffer(suspendBuf)
return nil, err
}
var rbuf []byte
var more_data int32
more_data = 1
for more_data != 2 {
p.opGetSegment(blobHandle)
more_data, _, rbuf, err = p.opResponse()
buf := rbuf
for len(buf) > 0 {
ln := int(bytes_to_int16(buf[0:2]))
blob = append(blob, buf[2:ln+2]...)
buf = buf[ln+2:]
}
}
p.opCloseBlob(blobHandle)
if p.acceptType == ptype_lazy_send {
p.lazyResponseCount++
} else {
_, _, _, err = p.opResponse()
}
p.resumeBuffer(suspendBuf)
return blob, err
}
func (p *wireProtocol) opConnect(dbName string, user string, password string, options map[string]string, clientPublic *big.Int) error {
p.debugPrint("opConnect")
wire_crypt := true
wire_crypt, _ = strconv.ParseBool(options["wire_crypt"])
protocols := []string{
// PROTOCOL_VERSION, Arch type (Generic=1), min, max, weight
"0000000a00000001000000000000000500000002", // 10, 1, 0, 5, 2
"ffff800b00000001000000000000000500000004", // 11, 1, 0, 5, 4
"ffff800c00000001000000000000000500000006", // 12, 1, 0, 5, 6
"ffff800d00000001000000000000000500000008", // 13, 1, 0, 5, 8
"ffff800e0000000100000000000000050000000a", // 14, 1, 0, 5, 10
"ffff800f0000000100000000000000050000000c", // 15, 1, 0, 5, 12
"ffff80100000000100000000000000050000000e", // 16, 1, 0, 5, 14
"ffff801100000001000000000000000500000010", // 17, 1, 0, 5, 16
}
p.packInt(op_connect)
p.packInt(op_attach)
p.packInt(3) // CONNECT_VERSION3
p.packInt(1) // Arch type(GENERIC)
p.packString(dbName)
p.packInt(int32(len(protocols)))
p.packBytes(p.uid(strings.ToUpper(user), password, options["auth_plugin_name"], wire_crypt, clientPublic))
buf, _ := hex.DecodeString(strings.Join(protocols, ""))
p.appendBytes(buf)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opCreate(dbName string, user string, password string, role string) error {
p.debugPrint("opCreate")
var page_size int32
page_size = 4096
encode := bytes.NewBufferString(p.charset).Bytes()
userBytes := bytes.NewBufferString(strings.ToUpper(user)).Bytes()
passwordBytes := bytes.NewBufferString(password).Bytes()
roleBytes := []byte(role)
dpb := bytes.Join([][]byte{
[]byte{isc_dpb_version1},
[]byte{isc_dpb_set_db_charset, byte(len(encode))}, encode,
[]byte{isc_dpb_lc_ctype, byte(len(encode))}, encode,
[]byte{isc_dpb_user_name, byte(len(userBytes))}, userBytes,
[]byte{isc_dpb_password, byte(len(passwordBytes))}, passwordBytes,
[]byte{isc_dpb_sql_role_name, byte(len(roleBytes))}, roleBytes,
[]byte{isc_dpb_sql_dialect, 4}, int32_to_bytes(3),
[]byte{isc_dpb_force_write, 4}, bint32_to_bytes(1),
[]byte{isc_dpb_overwrite, 4}, bint32_to_bytes(1),
[]byte{isc_dpb_page_size, 4}, int32_to_bytes(page_size),
[]byte{isc_dpb_utf8_filename, 1, 1},
}, nil)
if p.authData != nil {
specificAuthData := bytes.NewBufferString(hex.EncodeToString(p.authData)).Bytes()
dpb = bytes.Join([][]byte{
dpb,
[]byte{isc_dpb_specific_auth_data, byte(len(specificAuthData))}, specificAuthData}, nil)
}
if p.timezone != "" {
tznameBytes := []byte(p.timezone)
dpb = bytes.Join([][]byte{
dpb,
[]byte{isc_dpb_session_time_zone, byte(len(tznameBytes))}, tznameBytes}, nil)
}
p.packInt(op_create)
p.packInt(0) // Database Object ID
p.packString(dbName)
p.packBytes(dpb)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opAttach(dbName string, user string, password string, role string) error {
p.debugPrint("opAttach")
encode := bytes.NewBufferString(p.charset).Bytes()
userBytes := bytes.NewBufferString(strings.ToUpper(user)).Bytes()
passwordBytes := bytes.NewBufferString(password).Bytes()
roleBytes := []byte(role)
processName, err := osext.Executable()
var processNameBytes []byte
if err == nil {
if len(processName) > 255 {
//limit process name to last 255 symbols
processName = processName[len(processName)-255:]
}
processNameBytes = bytes.NewBufferString(processName).Bytes()
}
pid := int32(os.Getpid())
dpb := bytes.Join([][]byte{
[]byte{isc_dpb_version1},
[]byte{isc_dpb_sql_dialect, 4}, int32_to_bytes(3),
[]byte{isc_dpb_lc_ctype, byte(len(encode))}, encode,
[]byte{isc_dpb_user_name, byte(len(userBytes))}, userBytes,
[]byte{isc_dpb_password, byte(len(passwordBytes))}, passwordBytes,
[]byte{isc_dpb_sql_role_name, byte(len(roleBytes))}, roleBytes,
[]byte{isc_dpb_process_id, 4}, int32_to_bytes(pid),
[]byte{isc_dpb_process_name, byte(len(processNameBytes))}, processNameBytes,
[]byte{isc_dpb_utf8_filename, 1, 1},
}, nil)
if p.authData != nil {
specificAuthData := bytes.NewBufferString(hex.EncodeToString(p.authData)).Bytes()
dpb = bytes.Join([][]byte{
dpb,
[]byte{isc_dpb_specific_auth_data, byte(len(specificAuthData))}, specificAuthData}, nil)
}
if p.timezone != "" {
tznameBytes := []byte(p.timezone)
dpb = bytes.Join([][]byte{
dpb,
[]byte{isc_dpb_session_time_zone, byte(len(tznameBytes))}, tznameBytes}, nil)
}
p.packInt(op_attach)
p.packInt(0) // Database Object ID
p.packString(dbName)
p.packBytes(dpb)
_, err = p.sendPackets()
return err
}
func (p *wireProtocol) opContAuth(authData []byte, authPluginName string, authPluginList string, keys string) error {
p.debugPrint("opContAuth")
p.packInt(op_cont_auth)
p.packString(hex.EncodeToString(authData))
p.packString(authPluginName)
p.packString(authPluginList)
p.packString(keys)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opCrypt(plugin string) error {
p.packInt(op_crypt)
p.packString(plugin)
p.packString("Symmetric")
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opCryptCallback() error {
p.debugPrint("opCryptCallback")
p.packInt(op_crypt_key_callback)
p.packInt(0)
p.packInt(int32(BUFFER_LEN))
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opDropDatabase() error {
p.debugPrint("opDropDatabase")
p.packInt(op_drop_database)
p.packInt(p.dbHandle)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opTransaction(tpb []byte) error {
p.debugPrint("opTransaction")
p.packInt(op_transaction)
p.packInt(p.dbHandle)
p.packBytes(tpb)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opCommit(transHandle int32) error {
p.debugPrint("opCommit():%d", transHandle)
p.packInt(op_commit)
p.packInt(transHandle)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opCommitRetaining(transHandle int32) error {
p.debugPrint("opCommitRetaining():%d", transHandle)
p.packInt(op_commit_retaining)
p.packInt(transHandle)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opRollback(transHandle int32) error {
p.debugPrint("opRollback():%d", transHandle)
p.packInt(op_rollback)
p.packInt(transHandle)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opRollbackRetaining(transHandle int32) error {
p.debugPrint("opRollbackRetaining():%d", transHandle)
p.packInt(op_rollback_retaining)
p.packInt(transHandle)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opAllocateStatement() error {
p.debugPrint("opAllocateStatement")
p.packInt(op_allocate_statement)
p.packInt(p.dbHandle)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opInfoTransaction(transHandle int32, b []byte) error {
p.debugPrint("opInfoTransaction")
p.packInt(op_info_transaction)
p.packInt(transHandle)
p.packInt(0)
p.packBytes(b)
p.packInt(int32(BUFFER_LEN))
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opInfoDatabase(bs []byte) error {
p.debugPrint("opInfoDatabase")
p.packInt(op_info_database)
p.packInt(p.dbHandle)
p.packInt(0)
p.packBytes(bs)
p.packInt(int32(BUFFER_LEN))
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opFreeStatement(stmtHandle int32, mode int32) error {
p.debugPrint("opFreeStatement:<%v>", stmtHandle)
p.packInt(op_free_statement)
p.packInt(stmtHandle)
p.packInt(mode)
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opPrepareStatement(stmtHandle int32, transHandle int32, query string) error {
p.debugPrint("opPrepareStatement():%d,%d,%v", transHandle, stmtHandle, query)
bs := bytes.Join([][]byte{
[]byte{isc_info_sql_stmt_type},
_INFO_SQL_SELECT_DESCRIBE_VARS(),
}, nil)
p.packInt(op_prepare_statement)
p.packInt(transHandle)
p.packInt(stmtHandle)
p.packInt(3) // dialect = 3
p.packString(query)
p.packBytes(bs)
p.packInt(int32(BUFFER_LEN))
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opInfoSql(stmtHandle int32, vars []byte) error {
p.debugPrint("opInfoSql")
p.packInt(op_info_sql)
p.packInt(stmtHandle)
p.packInt(0)
p.packBytes(vars)
p.packInt(int32(BUFFER_LEN))
_, err := p.sendPackets()
return err
}
func (p *wireProtocol) opExecute(stmtHandle int32, transHandle int32, params []driver.Value) error {
p.debugPrint("opExecute():%d,%d,%v", transHandle, stmtHandle, params)
p.packInt(op_execute)