tdsds.com/gitea
1
1
Fork 0
mirror of https://github.com/go-gitea/gitea synced 2025-07-23 02:38:35 +00:00
Code Releases Activity

Remove ldap dep

Browse Source
This commit is contained in:
Unknwon
2014-09-07 20:04:47 -04:00
parent 25d6ae69d1
commit 59a7c7c5a5
24 changed files with 2742 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
modules/asn1-ber/LICENSE Normal file
View File

@@ -0,0 +1,27 @@
Copyright (c) 2012 The Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

11
modules/asn1-ber/Makefile Normal file
View File

@@ -0,0 +1,11 @@
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
include $(GOROOT)/src/Make.inc
TARG=github.com/mmitton/asn1-ber
GOFILES=\
ber.go\
include $(GOROOT)/src/Make.pkg

14
modules/asn1-ber/README Normal file
View File

@@ -0,0 +1,14 @@
ASN1 BER Encoding / Decoding Library for the GO programming language.
Required Librarys:
None
Working:
Very basic encoding / decoding needed for LDAP protocol
Tests Implemented:
None
TODO:
Fix all encoding / decoding to conform to ASN1 BER spec
Implement Tests / Benchmarks

492
modules/asn1-ber/ber.go Normal file
View File

@@ -0,0 +1,492 @@
package ber
import (
"bytes"
"fmt"
"io"
"reflect"
)
type Packet struct {
ClassType uint8
TagType uint8
Tag uint8
Value interface{}
ByteValue []byte
Data *bytes.Buffer
Children []*Packet
Description string
}
const (
TagEOC = 0x00
TagBoolean = 0x01
TagInteger = 0x02
TagBitString = 0x03
TagOctetString = 0x04
TagNULL = 0x05
TagObjectIdentifier = 0x06
TagObjectDescriptor = 0x07
TagExternal = 0x08
TagRealFloat = 0x09
TagEnumerated = 0x0a
TagEmbeddedPDV = 0x0b
TagUTF8String = 0x0c
TagRelativeOID = 0x0d
TagSequence = 0x10
TagSet = 0x11
TagNumericString = 0x12
TagPrintableString = 0x13
TagT61String = 0x14
TagVideotexString = 0x15
TagIA5String = 0x16
TagUTCTime = 0x17
TagGeneralizedTime = 0x18
TagGraphicString = 0x19
TagVisibleString = 0x1a
TagGeneralString = 0x1b
TagUniversalString = 0x1c
TagCharacterString = 0x1d
TagBMPString = 0x1e
TagBitmask = 0x1f // xxx11111b
)
var TagMap = map[uint8]string{
TagEOC: "EOC (End-of-Content)",
TagBoolean: "Boolean",
TagInteger: "Integer",
TagBitString: "Bit String",
TagOctetString: "Octet String",
TagNULL: "NULL",
TagObjectIdentifier: "Object Identifier",
TagObjectDescriptor: "Object Descriptor",
TagExternal: "External",
TagRealFloat: "Real (float)",
TagEnumerated: "Enumerated",
TagEmbeddedPDV: "Embedded PDV",
TagUTF8String: "UTF8 String",
TagRelativeOID: "Relative-OID",
TagSequence: "Sequence and Sequence of",
TagSet: "Set and Set OF",
TagNumericString: "Numeric String",
TagPrintableString: "Printable String",
TagT61String: "T61 String",
TagVideotexString: "Videotex String",
TagIA5String: "IA5 String",
TagUTCTime: "UTC Time",
TagGeneralizedTime: "Generalized Time",
TagGraphicString: "Graphic String",
TagVisibleString: "Visible String",
TagGeneralString: "General String",
TagUniversalString: "Universal String",
TagCharacterString: "Character String",
TagBMPString: "BMP String",
}
const (
ClassUniversal = 0 // 00xxxxxxb
ClassApplication = 64 // 01xxxxxxb
ClassContext = 128 // 10xxxxxxb
ClassPrivate = 192 // 11xxxxxxb
ClassBitmask = 192 // 11xxxxxxb
)
var ClassMap = map[uint8]string{
ClassUniversal: "Universal",
ClassApplication: "Application",
ClassContext: "Context",
ClassPrivate: "Private",
}
const (
TypePrimitive = 0 // xx0xxxxxb
TypeConstructed = 32 // xx1xxxxxb
TypeBitmask = 32 // xx1xxxxxb
)
var TypeMap = map[uint8]string{
TypePrimitive: "Primative",
TypeConstructed: "Constructed",
}
var Debug bool = false
func PrintBytes(buf []byte, indent string) {
data_lines := make([]string, (len(buf)/30)+1)
num_lines := make([]string, (len(buf)/30)+1)
for i, b := range buf {
data_lines[i/30] += fmt.Sprintf("%02x ", b)
num_lines[i/30] += fmt.Sprintf("%02d ", (i+1)%100)
}
for i := 0; i < len(data_lines); i++ {
fmt.Print(indent + data_lines[i] + "\n")
fmt.Print(indent + num_lines[i] + "\n\n")
}
}
func PrintPacket(p *Packet) {
printPacket(p, 0, false)
}
func printPacket(p *Packet, indent int, printBytes bool) {
indent_str := ""
for len(indent_str) != indent {
indent_str += " "
}
class_str := ClassMap[p.ClassType]
tagtype_str := TypeMap[p.TagType]
tag_str := fmt.Sprintf("0x%02X", p.Tag)
if p.ClassType == ClassUniversal {
tag_str = TagMap[p.Tag]
}
value := fmt.Sprint(p.Value)
description := ""
if p.Description != "" {
description = p.Description + ": "
}
fmt.Printf("%s%s(%s, %s, %s) Len=%d %q\n", indent_str, description, class_str, tagtype_str, tag_str, p.Data.Len(), value)
if printBytes {
PrintBytes(p.Bytes(), indent_str)
}
for _, child := range p.Children {
printPacket(child, indent+1, printBytes)
}
}
func resizeBuffer(in []byte, new_size uint64) (out []byte) {
out = make([]byte, new_size)
copy(out, in)
return
}
func readBytes(reader io.Reader, buf []byte) error {
idx := 0
buflen := len(buf)
for idx < buflen {
n, err := reader.Read(buf[idx:])
if err != nil {
return err
}
idx += n
}
return nil
}
func ReadPacket(reader io.Reader) (*Packet, error) {
buf := make([]byte, 2)
err := readBytes(reader, buf)
if err != nil {
return nil, err
}
idx := uint64(2)
datalen := uint64(buf[1])
if Debug {
fmt.Printf("Read: datalen = %d len(buf) = %d ", datalen, len(buf))
for _, b := range buf {
fmt.Printf("%02X ", b)
}
fmt.Printf("\n")
}
if datalen&128 != 0 {
a := datalen - 128
idx += a
buf = resizeBuffer(buf, 2+a)
err := readBytes(reader, buf[2:])
if err != nil {
return nil, err
}
datalen = DecodeInteger(buf[2 : 2+a])
if Debug {
fmt.Printf("Read: a = %d idx = %d datalen = %d len(buf) = %d", a, idx, datalen, len(buf))
for _, b := range buf {
fmt.Printf("%02X ", b)
}
fmt.Printf("\n")
}
}
buf = resizeBuffer(buf, idx+datalen)
err = readBytes(reader, buf[idx:])
if err != nil {
return nil, err
}
if Debug {
fmt.Printf("Read: len( buf ) = %d idx=%d datalen=%d idx+datalen=%d\n", len(buf), idx, datalen, idx+datalen)
for _, b := range buf {
fmt.Printf("%02X ", b)
}
}
p := DecodePacket(buf)
return p, nil
}
func DecodeString(data []byte) (ret string) {
for _, c := range data {
ret += fmt.Sprintf("%c", c)
}
return
}
func DecodeInteger(data []byte) (ret uint64) {
for _, i := range data {
ret = ret * 256
ret = ret + uint64(i)
}
return
}
func EncodeInteger(val uint64) []byte {
var out bytes.Buffer
found := false
shift := uint(56)
mask := uint64(0xFF00000000000000)
for mask > 0 {
if !found && (val&mask != 0) {
found = true
}
if found || (shift == 0) {
out.Write([]byte{byte((val & mask) >> shift)})
}
shift -= 8
mask = mask >> 8
}
return out.Bytes()
}
func DecodePacket(data []byte) *Packet {
p, _ := decodePacket(data)
return p
}
func decodePacket(data []byte) (*Packet, []byte) {
if Debug {
fmt.Printf("decodePacket: enter %d\n", len(data))
}
p := new(Packet)
p.ClassType = data[0] & ClassBitmask
p.TagType = data[0] & TypeBitmask
p.Tag = data[0] & TagBitmask
datalen := DecodeInteger(data[1:2])
datapos := uint64(2)
if datalen&128 != 0 {
datalen -= 128
datapos += datalen
datalen = DecodeInteger(data[2 : 2+datalen])
}
p.Data = new(bytes.Buffer)
p.Children = make([]*Packet, 0, 2)
p.Value = nil
value_data := data[datapos : datapos+datalen]
if p.TagType == TypeConstructed {
for len(value_data) != 0 {
var child *Packet
child, value_data = decodePacket(value_data)
p.AppendChild(child)
}
} else if p.ClassType == ClassUniversal {
p.Data.Write(data[datapos : datapos+datalen])
p.ByteValue = value_data
switch p.Tag {
case TagEOC:
case TagBoolean:
val := DecodeInteger(value_data)
p.Value = val != 0
case TagInteger:
p.Value = DecodeInteger(value_data)
case TagBitString:
case TagOctetString:
p.Value = DecodeString(value_data)
case TagNULL:
case TagObjectIdentifier:
case TagObjectDescriptor:
case TagExternal:
case TagRealFloat:
case TagEnumerated:
p.Value = DecodeInteger(value_data)
case TagEmbeddedPDV:
case TagUTF8String:
case TagRelativeOID:
case TagSequence:
case TagSet:
case TagNumericString:
case TagPrintableString:
p.Value = DecodeString(value_data)
case TagT61String:
case TagVideotexString:
case TagIA5String:
case TagUTCTime:
case TagGeneralizedTime:
case TagGraphicString:
case TagVisibleString:
case TagGeneralString:
case TagUniversalString:
case TagCharacterString:
case TagBMPString:
}
} else {
p.Data.Write(data[datapos : datapos+datalen])
}
return p, data[datapos+datalen:]
}
func (p *Packet) DataLength() uint64 {
return uint64(p.Data.Len())
}
func (p *Packet) Bytes() []byte {
var out bytes.Buffer
out.Write([]byte{p.ClassType | p.TagType | p.Tag})
packet_length := EncodeInteger(p.DataLength())
if p.DataLength() > 127 || len(packet_length) > 1 {
out.Write([]byte{byte(len(packet_length) | 128)})
out.Write(packet_length)
} else {
out.Write(packet_length)
}
out.Write(p.Data.Bytes())
return out.Bytes()
}
func (p *Packet) AppendChild(child *Packet) {
p.Data.Write(child.Bytes())
if len(p.Children) == cap(p.Children) {
newChildren := make([]*Packet, cap(p.Children)*2)
copy(newChildren, p.Children)
p.Children = newChildren[0:len(p.Children)]
}
p.Children = p.Children[0 : len(p.Children)+1]
p.Children[len(p.Children)-1] = child
}
func Encode(ClassType, TagType, Tag uint8, Value interface{}, Description string) *Packet {
p := new(Packet)
p.ClassType = ClassType
p.TagType = TagType
p.Tag = Tag
p.Data = new(bytes.Buffer)
p.Children = make([]*Packet, 0, 2)
p.Value = Value
p.Description = Description
if Value != nil {
v := reflect.ValueOf(Value)
if ClassType == ClassUniversal {
switch Tag {
case TagOctetString:
sv, ok := v.Interface().(string)
if ok {
p.Data.Write([]byte(sv))
}
}
}
}
return p
}
func NewSequence(Description string) *Packet {
return Encode(ClassUniversal, TypePrimitive, TagSequence, nil, Description)
}
func NewBoolean(ClassType, TagType, Tag uint8, Value bool, Description string) *Packet {
intValue := 0
if Value {
intValue = 1
}
p := Encode(ClassType, TagType, Tag, nil, Description)
p.Value = Value
p.Data.Write(EncodeInteger(uint64(intValue)))
return p
}
func NewInteger(ClassType, TagType, Tag uint8, Value uint64, Description string) *Packet {
p := Encode(ClassType, TagType, Tag, nil, Description)
p.Value = Value
p.Data.Write(EncodeInteger(Value))
return p
}
func NewString(ClassType, TagType, Tag uint8, Value, Description string) *Packet {
p := Encode(ClassType, TagType, Tag, nil, Description)
p.Value = Value
p.Data.Write([]byte(Value))
return p
}