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vendor: add github.com/d2g

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This commit is contained in:
Dan Williams
2017-05-09 22:43:47 -05:00
parent be5f1f723e
commit 7cab2fd317
13 changed files with 1368 additions and 0 deletions
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"Comment": "v2-53-g2688e91", "Comment": "v2-53-g2688e91",
"Rev": "2688e91251d9d8e404e86dd8f096e23b2f086958" "Rev": "2688e91251d9d8e404e86dd8f096e23b2f086958"
}, },
{
"ImportPath": "github.com/d2g/dhcp4",
"Rev": "f0e4d29ff0231dce36e250b2ed9ff08412584bca"
},
{
"ImportPath": "github.com/d2g/dhcp4client",
"Rev": "bed07e1bc5b85f69c6f0fd73393aa35ec68ed892"
},
{ {
"ImportPath": "github.com/onsi/ginkgo", "ImportPath": "github.com/onsi/ginkgo",
"Comment": "v1.2.0-29-g7f8ab55", "Comment": "v1.2.0-29-g7f8ab55",

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vendor/github.com/d2g/dhcp4/LICENSE generated vendored Normal file
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Copyright (c) 2013 Skagerrak Software Limited. 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 Skagerrak Software Limited 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.

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vendor/github.com/d2g/dhcp4/README.md generated vendored Normal file
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# DHCP4 - A DHCP library written in Go.
Warning: This library is still being developed. Function calls will change.
I've removed Server Functionality, for me this project supports the underlying DHCP format not the implementation.

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vendor/github.com/d2g/dhcp4/constants.go generated vendored Normal file
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package dhcp4
// OpCodes
const (
BootRequest OpCode = 1 // From Client
BootReply OpCode = 2 // From Server
)
// DHCP Message Type 53
const (
Discover MessageType = 1 // Broadcast Packet From Client - Can I have an IP?
Offer MessageType = 2 // Broadcast From Server - Here's an IP
Request MessageType = 3 // Broadcast From Client - I'll take that IP (Also start for renewals)
Decline MessageType = 4 // Broadcast From Client - Sorry I can't use that IP
ACK MessageType = 5 // From Server, Yes you can have that IP
NAK MessageType = 6 // From Server, No you cannot have that IP
Release MessageType = 7 // From Client, I don't need that IP anymore
Inform MessageType = 8 // From Client, I have this IP and there's nothing you can do about it
)
// DHCP Options
const (
End OptionCode = 255
Pad OptionCode = 0
OptionSubnetMask OptionCode = 1
OptionTimeOffset OptionCode = 2
OptionRouter OptionCode = 3
OptionTimeServer OptionCode = 4
OptionNameServer OptionCode = 5
OptionDomainNameServer OptionCode = 6
OptionLogServer OptionCode = 7
OptionCookieServer OptionCode = 8
OptionLPRServer OptionCode = 9
OptionImpressServer OptionCode = 10
OptionResourceLocationServer OptionCode = 11
OptionHostName OptionCode = 12
OptionBootFileSize OptionCode = 13
OptionMeritDumpFile OptionCode = 14
OptionDomainName OptionCode = 15
OptionSwapServer OptionCode = 16
OptionRootPath OptionCode = 17
OptionExtensionsPath OptionCode = 18
// IP Layer Parameters per Host
OptionIPForwardingEnableDisable OptionCode = 19
OptionNonLocalSourceRoutingEnableDisable OptionCode = 20
OptionPolicyFilter OptionCode = 21
OptionMaximumDatagramReassemblySize OptionCode = 22
OptionDefaultIPTimeToLive OptionCode = 23
OptionPathMTUAgingTimeout OptionCode = 24
OptionPathMTUPlateauTable OptionCode = 25
// IP Layer Parameters per Interface
OptionInterfaceMTU OptionCode = 26
OptionAllSubnetsAreLocal OptionCode = 27
OptionBroadcastAddress OptionCode = 28
OptionPerformMaskDiscovery OptionCode = 29
OptionMaskSupplier OptionCode = 30
OptionPerformRouterDiscovery OptionCode = 31
OptionRouterSolicitationAddress OptionCode = 32
OptionStaticRoute OptionCode = 33
// Link Layer Parameters per Interface
OptionTrailerEncapsulation OptionCode = 34
OptionARPCacheTimeout OptionCode = 35
OptionEthernetEncapsulation OptionCode = 36
// TCP Parameters
OptionTCPDefaultTTL OptionCode = 37
OptionTCPKeepaliveInterval OptionCode = 38
OptionTCPKeepaliveGarbage OptionCode = 39
// Application and Service Parameters
OptionNetworkInformationServiceDomain OptionCode = 40
OptionNetworkInformationServers OptionCode = 41
OptionNetworkTimeProtocolServers OptionCode = 42
OptionVendorSpecificInformation OptionCode = 43
OptionNetBIOSOverTCPIPNameServer OptionCode = 44
OptionNetBIOSOverTCPIPDatagramDistributionServer OptionCode = 45
OptionNetBIOSOverTCPIPNodeType OptionCode = 46
OptionNetBIOSOverTCPIPScope OptionCode = 47
OptionXWindowSystemFontServer OptionCode = 48
OptionXWindowSystemDisplayManager OptionCode = 49
OptionNetworkInformationServicePlusDomain OptionCode = 64
OptionNetworkInformationServicePlusServers OptionCode = 65
OptionMobileIPHomeAgent OptionCode = 68
OptionSimpleMailTransportProtocol OptionCode = 69
OptionPostOfficeProtocolServer OptionCode = 70
OptionNetworkNewsTransportProtocol OptionCode = 71
OptionDefaultWorldWideWebServer OptionCode = 72
OptionDefaultFingerServer OptionCode = 73
OptionDefaultInternetRelayChatServer OptionCode = 74
OptionStreetTalkServer OptionCode = 75
OptionStreetTalkDirectoryAssistance OptionCode = 76
// DHCP Extensions
OptionRequestedIPAddress OptionCode = 50
OptionIPAddressLeaseTime OptionCode = 51
OptionOverload OptionCode = 52
OptionDHCPMessageType OptionCode = 53
OptionServerIdentifier OptionCode = 54
OptionParameterRequestList OptionCode = 55
OptionMessage OptionCode = 56
OptionMaximumDHCPMessageSize OptionCode = 57
OptionRenewalTimeValue OptionCode = 58
OptionRebindingTimeValue OptionCode = 59
OptionVendorClassIdentifier OptionCode = 60
OptionClientIdentifier OptionCode = 61
OptionTFTPServerName OptionCode = 66
OptionBootFileName OptionCode = 67
OptionUserClass OptionCode = 77
OptionClientArchitecture OptionCode = 93
OptionTZPOSIXString OptionCode = 100
OptionTZDatabaseString OptionCode = 101
OptionClasslessRouteFormat OptionCode = 121
)

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package dhcp4
import (
"encoding/binary"
"net"
"time"
)
// IPRange returns how many ips in the ip range from start to stop (inclusive)
func IPRange(start, stop net.IP) int {
//return int(Uint([]byte(stop))-Uint([]byte(start))) + 1
return int(binary.BigEndian.Uint32(stop.To4())) - int(binary.BigEndian.Uint32(start.To4())) + 1
}
// IPAdd returns a copy of start + add.
// IPAdd(net.IP{192,168,1,1},30) returns net.IP{192.168.1.31}
func IPAdd(start net.IP, add int) net.IP { // IPv4 only
start = start.To4()
//v := Uvarint([]byte(start))
result := make(net.IP, 4)
binary.BigEndian.PutUint32(result, binary.BigEndian.Uint32(start)+uint32(add))
//PutUint([]byte(result), v+uint64(add))
return result
}
// IPLess returns where IP a is less than IP b.
func IPLess(a, b net.IP) bool {
b = b.To4()
for i, ai := range a.To4() {
if ai != b[i] {
return ai < b[i]
}
}
return false
}
// IPInRange returns true if ip is between (inclusive) start and stop.
func IPInRange(start, stop, ip net.IP) bool {
return !(IPLess(ip, start) || IPLess(stop, ip))
}
// OptionsLeaseTime - converts a time.Duration to a 4 byte slice, compatible
// with OptionIPAddressLeaseTime.
func OptionsLeaseTime(d time.Duration) []byte {
leaseBytes := make([]byte, 4)
binary.BigEndian.PutUint32(leaseBytes, uint32(d/time.Second))
//PutUvarint(leaseBytes, uint64(d/time.Second))
return leaseBytes
}
// JoinIPs returns a byte slice of IP addresses, one immediately after the other
// This may be useful for creating multiple IP options such as OptionRouter.
func JoinIPs(ips []net.IP) (b []byte) {
for _, v := range ips {
b = append(b, v.To4()...)
}
return
}

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package dhcp4
type OptionCode byte
type Option struct {
Code OptionCode
Value []byte
}
// Map of DHCP options
type Options map[OptionCode][]byte
// SelectOrderOrAll has same functionality as SelectOrder, except if the order
// param is nil, whereby all options are added (in arbitary order).
func (o Options) SelectOrderOrAll(order []byte) []Option {
if order == nil {
opts := make([]Option, 0, len(o))
for i, v := range o {
opts = append(opts, Option{Code: i, Value: v})
}
return opts
}
return o.SelectOrder(order)
}
// SelectOrder returns a slice of options ordered and selected by a byte array
// usually defined by OptionParameterRequestList. This result is expected to be
// used in ReplyPacket()'s []Option parameter.
func (o Options) SelectOrder(order []byte) []Option {
opts := make([]Option, 0, len(order))
for _, v := range order {
if data, ok := o[OptionCode(v)]; ok {
opts = append(opts, Option{Code: OptionCode(v), Value: data})
}
}
return opts
}
type OpCode byte
type MessageType byte // Option 53

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package dhcp4
import (
"net"
"time"
)
// A DHCP packet
type Packet []byte
func (p Packet) OpCode() OpCode { return OpCode(p[0]) }
func (p Packet) HType() byte { return p[1] }
func (p Packet) HLen() byte { return p[2] }
func (p Packet) Hops() byte { return p[3] }
func (p Packet) XId() []byte { return p[4:8] }
func (p Packet) Secs() []byte { return p[8:10] } // Never Used?
func (p Packet) Flags() []byte { return p[10:12] }
func (p Packet) CIAddr() net.IP { return net.IP(p[12:16]) }
func (p Packet) YIAddr() net.IP { return net.IP(p[16:20]) }
func (p Packet) SIAddr() net.IP { return net.IP(p[20:24]) }
func (p Packet) GIAddr() net.IP { return net.IP(p[24:28]) }
func (p Packet) CHAddr() net.HardwareAddr {
hLen := p.HLen()
if hLen > 16 { // Prevent chaddr exceeding p boundary
hLen = 16
}
return net.HardwareAddr(p[28 : 28+hLen]) // max endPos 44
}
// 192 bytes of zeros BOOTP legacy
func (p Packet) Cookie() []byte { return p[236:240] }
func (p Packet) Options() []byte {
if len(p) > 240 {
return p[240:]
}
return nil
}
func (p Packet) Broadcast() bool { return p.Flags()[0] > 127 }
func (p Packet) SetBroadcast(broadcast bool) {
if p.Broadcast() != broadcast {
p.Flags()[0] ^= 128
}
}
func (p Packet) SetOpCode(c OpCode) { p[0] = byte(c) }
func (p Packet) SetCHAddr(a net.HardwareAddr) {
copy(p[28:44], a)
p[2] = byte(len(a))
}
func (p Packet) SetHType(hType byte) { p[1] = hType }
func (p Packet) SetCookie(cookie []byte) { copy(p.Cookie(), cookie) }
func (p Packet) SetHops(hops byte) { p[3] = hops }
func (p Packet) SetXId(xId []byte) { copy(p.XId(), xId) }
func (p Packet) SetSecs(secs []byte) { copy(p.Secs(), secs) }
func (p Packet) SetFlags(flags []byte) { copy(p.Flags(), flags) }
func (p Packet) SetCIAddr(ip net.IP) { copy(p.CIAddr(), ip.To4()) }
func (p Packet) SetYIAddr(ip net.IP) { copy(p.YIAddr(), ip.To4()) }
func (p Packet) SetSIAddr(ip net.IP) { copy(p.SIAddr(), ip.To4()) }
func (p Packet) SetGIAddr(ip net.IP) { copy(p.GIAddr(), ip.To4()) }
// Parses the packet's options into an Options map
func (p Packet) ParseOptions() Options {
opts := p.Options()
options := make(Options, 10)
for len(opts) >= 2 && OptionCode(opts[0]) != End {
if OptionCode(opts[0]) == Pad {
opts = opts[1:]
continue
}
size := int(opts[1])
if len(opts) < 2+size {
break
}
options[OptionCode(opts[0])] = opts[2 : 2+size]
opts = opts[2+size:]
}
return options
}
func NewPacket(opCode OpCode) Packet {
p := make(Packet, 241)
p.SetOpCode(opCode)
p.SetHType(1) // Ethernet
p.SetCookie([]byte{99, 130, 83, 99})
p[240] = byte(End)
return p
}
// Appends a DHCP option to the end of a packet
func (p *Packet) AddOption(o OptionCode, value []byte) {
*p = append((*p)[:len(*p)-1], []byte{byte(o), byte(len(value))}...) // Strip off End, Add OptionCode and Length
*p = append(*p, value...) // Add Option Value
*p = append(*p, byte(End)) // Add on new End
}
// Removes all options from packet.
func (p *Packet) StripOptions() {
*p = append((*p)[:240], byte(End))
}
// Creates a request packet that a Client would send to a server.
func RequestPacket(mt MessageType, chAddr net.HardwareAddr, cIAddr net.IP, xId []byte, broadcast bool, options []Option) Packet {
p := NewPacket(BootRequest)
p.SetCHAddr(chAddr)
p.SetXId(xId)
if cIAddr != nil {
p.SetCIAddr(cIAddr)
}
p.SetBroadcast(broadcast)
p.AddOption(OptionDHCPMessageType, []byte{byte(mt)})
for _, o := range options {
p.AddOption(o.Code, o.Value)
}
p.PadToMinSize()
return p
}
// ReplyPacket creates a reply packet that a Server would send to a client.
// It uses the req Packet param to copy across common/necessary fields to
// associate the reply the request.
func ReplyPacket(req Packet, mt MessageType, serverId, yIAddr net.IP, leaseDuration time.Duration, options []Option) Packet {
p := NewPacket(BootReply)
p.SetXId(req.XId())
p.SetFlags(req.Flags())
p.SetYIAddr(yIAddr)
p.SetGIAddr(req.GIAddr())
p.SetCHAddr(req.CHAddr())
p.SetSecs(req.Secs())
p.AddOption(OptionDHCPMessageType, []byte{byte(mt)})
p.AddOption(OptionServerIdentifier, []byte(serverId))
p.AddOption(OptionIPAddressLeaseTime, OptionsLeaseTime(leaseDuration))
for _, o := range options {
p.AddOption(o.Code, o.Value)
}
p.PadToMinSize()
return p
}
// PadToMinSize pads a packet so that when sent over UDP, the entire packet,
// is 300 bytes (BOOTP min), to be compatible with really old devices.
var padder [272]byte
func (p *Packet) PadToMinSize() {
if n := len(*p); n < 272 {
*p = append(*p, padder[:272-n]...)
}
}

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Mozilla Public License, version 2.0
1. Definitions
1.1. “Contributor”
means each individual or legal entity that creates, contributes to the
creation of, or owns Covered Software.
1.2. “Contributor Version”
means the combination of the Contributions of others (if any) used by a
Contributor and that particular Contributor’s Contribution.
1.3. “Contribution”
means Covered Software of a particular Contributor.
1.4. “Covered Software”
means Source Code Form to which the initial Contributor has attached the
notice in Exhibit A, the Executable Form of such Source Code Form, and
Modifications of such Source Code Form, in each case including portions
thereof.
1.5. “Incompatible With Secondary Licenses”
means
a. that the initial Contributor has attached the notice described in
Exhibit B to the Covered Software; or
b. that the Covered Software was made available under the terms of version
1.1 or earlier of the License, but not also under the terms of a
Secondary License.
1.6. “Executable Form”
means any form of the work other than Source Code Form.
1.7. “Larger Work”
means a work that combines Covered Software with other material, in a separate
file or files, that is not Covered Software.
1.8. “License”
means this document.
1.9. “Licensable”
means having the right to grant, to the maximum extent possible, whether at the
time of the initial grant or subsequently, any and all of the rights conveyed by
this License.
1.10. “Modifications”
means any of the following:
a. any file in Source Code Form that results from an addition to, deletion
from, or modification of the contents of Covered Software; or
b. any new file in Source Code Form that contains any Covered Software.
1.11. “Patent Claims” of a Contributor
means any patent claim(s), including without limitation, method, process,
and apparatus claims, in any patent Licensable by such Contributor that
would be infringed, but for the grant of the License, by the making,
using, selling, offering for sale, having made, import, or transfer of
either its Contributions or its Contributor Version.
1.12. “Secondary License”
means either the GNU General Public License, Version 2.0, the GNU Lesser
General Public License, Version 2.1, the GNU Affero General Public
License, Version 3.0, or any later versions of those licenses.
1.13. “Source Code Form”
means the form of the work preferred for making modifications.
1.14. “You” (or “Your”)
means an individual or a legal entity exercising rights under this
License. For legal entities, “You” includes any entity that controls, is
controlled by, or is under common control with You. For purposes of this
definition, “control” means (a) the power, direct or indirect, to cause
the direction or management of such entity, whether by contract or
otherwise, or (b) ownership of more than fifty percent (50%) of the
outstanding shares or beneficial ownership of such entity.
2. License Grants and Conditions
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
a. under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or as
part of a Larger Work; and
b. under Patent Claims of such Contributor to make, use, sell, offer for
sale, have made, import, and otherwise transfer either its Contributions
or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution become
effective for each Contribution on the date the Contributor first distributes
such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under this
License. No additional rights or licenses will be implied from the distribution
or licensing of Covered Software under this License. Notwithstanding Section
2.1(b) above, no patent license is granted by a Contributor:
a. for any code that a Contributor has removed from Covered Software; or
b. for infringements caused by: (i) Your and any other third party’s
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
c. under Patent Claims infringed by Covered Software in the absence of its
Contributions.
This License does not grant any rights in the trademarks, service marks, or
logos of any Contributor (except as may be necessary to comply with the
notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this License
(see Section 10.2) or under the terms of a Secondary License (if permitted
under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its Contributions
are its original creation(s) or it has sufficient rights to grant the
rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under applicable
copyright doctrines of fair use, fair dealing, or other equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
Section 2.1.
3. Responsibilities
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under the
terms of this License. You must inform recipients that the Source Code Form
of the Covered Software is governed by the terms of this License, and how
they can obtain a copy of this License. You may not attempt to alter or
restrict the recipients’ rights in the Source Code Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
a. such Covered Software must also be made available in Source Code Form,
as described in Section 3.1, and You must inform recipients of the
Executable Form how they can obtain a copy of such Source Code Form by
reasonable means in a timely manner, at a charge no more than the cost
of distribution to the recipient; and
b. You may distribute such Executable Form under the terms of this License,
or sublicense it under different terms, provided that the license for
the Executable Form does not attempt to limit or alter the recipients’
rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for the
Covered Software. If the Larger Work is a combination of Covered Software
with a work governed by one or more Secondary Licenses, and the Covered
Software is not Incompatible With Secondary Licenses, this License permits
You to additionally distribute such Covered Software under the terms of
such Secondary License(s), so that the recipient of the Larger Work may, at
their option, further distribute the Covered Software under the terms of
either this License or such Secondary License(s).
3.4. Notices
You may not remove or alter the substance of any license notices (including
copyright notices, patent notices, disclaimers of warranty, or limitations
of liability) contained within the Source Code Form of the Covered
Software, except that You may alter any license notices to the extent
required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on behalf
of any Contributor. You must make it absolutely clear that any such
warranty, support, indemnity, or liability obligation is offered by You
alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
If it is impossible for You to comply with any of the terms of this License
with respect to some or all of the Covered Software due to statute, judicial
order, or regulation then You must: (a) comply with the terms of this License
to the maximum extent possible; and (b) describe the limitations and the code
they affect. Such description must be placed in a text file included with all
distributions of the Covered Software under this License. Except to the
extent prohibited by statute or regulation, such description must be
sufficiently detailed for a recipient of ordinary skill to be able to
understand it.
5. Termination
5.1. The rights granted under this License will terminate automatically if You
fail to comply with any of its terms. However, if You become compliant,
then the rights granted under this License from a particular Contributor
are reinstated (a) provisionally, unless and until such Contributor
explicitly and finally terminates Your grants, and (b) on an ongoing basis,
if such Contributor fails to notify You of the non-compliance by some
reasonable means prior to 60 days after You have come back into compliance.
Moreover, Your grants from a particular Contributor are reinstated on an
ongoing basis if such Contributor notifies You of the non-compliance by
some reasonable means, this is the first time You have received notice of
non-compliance with this License from such Contributor, and You become
compliant prior to 30 days after Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions, counter-claims,
and cross-claims) alleging that a Contributor Version directly or
indirectly infringes any patent, then the rights granted to You by any and
all Contributors for the Covered Software under Section 2.1 of this License
shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
license agreements (excluding distributors and resellers) which have been
validly granted by You or Your distributors under this License prior to
termination shall survive termination.
6. Disclaimer of Warranty
Covered Software is provided under this License on an “as is” basis, without
warranty of any kind, either expressed, implied, or statutory, including,
without limitation, warranties that the Covered Software is free of defects,
merchantable, fit for a particular purpose or non-infringing. The entire
risk as to the quality and performance of the Covered Software is with You.
Should any Covered Software prove defective in any respect, You (not any
Contributor) assume the cost of any necessary servicing, repair, or
correction. This disclaimer of warranty constitutes an essential part of this
License. No use of any Covered Software is authorized under this License
except under this disclaimer.
7. Limitation of Liability
Under no circumstances and under no legal theory, whether tort (including
negligence), contract, or otherwise, shall any Contributor, or anyone who
distributes Covered Software as permitted above, be liable to You for any
direct, indirect, special, incidental, or consequential damages of any
character including, without limitation, damages for lost profits, loss of
goodwill, work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses, even if such party shall have been
informed of the possibility of such damages. This limitation of liability
shall not apply to liability for death or personal injury resulting from such
party’s negligence to the extent applicable law prohibits such limitation.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages, so this exclusion and limitation may not apply to You.
8. Litigation
Any litigation relating to this License may be brought only in the courts of
a jurisdiction where the defendant maintains its principal place of business
and such litigation shall be governed by laws of that jurisdiction, without
reference to its conflict-of-law provisions. Nothing in this Section shall
prevent a party’s ability to bring cross-claims or counter-claims.
9. Miscellaneous
This License represents the complete agreement concerning the subject matter
hereof. If any provision of this License is held to be unenforceable, such
provision shall be reformed only to the extent necessary to make it
enforceable. Any law or regulation which provides that the language of a
contract shall be construed against the drafter shall not be used to construe
this License against a Contributor.
10. Versions of the License
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version of
the License under which You originally received the Covered Software, or
under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a modified
version of this License if you rename the license and remove any
references to the name of the license steward (except to note that such
modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
This Source Code Form is subject to the
terms of the Mozilla Public License, v.
2.0. If a copy of the MPL was not
distributed with this file, You can
obtain one at
http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular file, then
You may include the notice in a location (such as a LICENSE file in a relevant
directory) where a recipient would be likely to look for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - “Incompatible With Secondary Licenses” Notice
This Source Code Form is “Incompatible
With Secondary Licenses”, as defined by
the Mozilla Public License, v. 2.0.

8
vendor/github.com/d2g/dhcp4client/README.md generated vendored Normal file
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dhcp4client [![GoDoc](https://godoc.org/github.com/d2g/dhcp4client?status.svg)](http://godoc.org/github.com/d2g/dhcp4client) [![Coverage Status](https://coveralls.io/repos/d2g/dhcp4client/badge.svg?branch=HEAD)](https://coveralls.io/r/d2g/dhcp4client?branch=HEAD) [![Codeship Status for d2g/dhcp4client](https://codeship.com/projects/d75d9860-b364-0132-bc79-7e1d8cf367b9/status?branch=master)](https://codeship.com/projects/70187)
===========
DHCP Client
###### Thanks to:
@eyakubovich For AF_PACKET support.

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vendor/github.com/d2g/dhcp4client/client.go generated vendored Normal file
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package dhcp4client
import (
"bytes"
"crypto/rand"
"net"
"time"
"github.com/d2g/dhcp4"
)
const (
MaxDHCPLen = 576
)
type Client struct {
hardwareAddr net.HardwareAddr //The HardwareAddr to send in the request.
ignoreServers []net.IP //List of Servers to Ignore requests from.
timeout time.Duration //Time before we timeout.
broadcast bool //Set the Bcast flag in BOOTP Flags
connection connection //The Connection Method to use
}
/*
* Abstracts the type of underlying socket used
*/
type connection interface {
Close() error
Write(packet []byte) error
ReadFrom() ([]byte, net.IP, error)
SetReadTimeout(t time.Duration) error
}
func New(options ...func(*Client) error) (*Client, error) {
c := Client{
timeout: time.Second * 10,
broadcast: true,
}
err := c.SetOption(options...)
if err != nil {
return nil, err
}
//if connection hasn't been set as an option create the default.
if c.connection == nil {
conn, err := NewInetSock()
if err != nil {
return nil, err
}
c.connection = conn
}
return &c, nil
}
func (c *Client) SetOption(options ...func(*Client) error) error {
for _, opt := range options {
if err := opt(c); err != nil {
return err
}
}
return nil
}
func Timeout(t time.Duration) func(*Client) error {
return func(c *Client) error {
c.timeout = t
return nil
}
}
func IgnoreServers(s []net.IP) func(*Client) error {
return func(c *Client) error {
c.ignoreServers = s
return nil
}
}
func HardwareAddr(h net.HardwareAddr) func(*Client) error {
return func(c *Client) error {
c.hardwareAddr = h
return nil
}
}
func Broadcast(b bool) func(*Client) error {
return func(c *Client) error {
c.broadcast = b
return nil
}
}
func Connection(conn connection) func(*Client) error {
return func(c *Client) error {
c.connection = conn
return nil
}
}
/*
* Close Connections
*/
func (c *Client) Close() error {
if c.connection != nil {
return c.connection.Close()
}
return nil
}
/*
* Send the Discovery Packet to the Broadcast Channel
*/
func (c *Client) SendDiscoverPacket() (dhcp4.Packet, error) {
discoveryPacket := c.DiscoverPacket()
discoveryPacket.PadToMinSize()
return discoveryPacket, c.SendPacket(discoveryPacket)
}
/*
* Retreive Offer...
* Wait for the offer for a specific Discovery Packet.
*/
func (c *Client) GetOffer(discoverPacket *dhcp4.Packet) (dhcp4.Packet, error) {
for {
c.connection.SetReadTimeout(c.timeout)
readBuffer, source, err := c.connection.ReadFrom()
if err != nil {
return dhcp4.Packet{}, err
}
offerPacket := dhcp4.Packet(readBuffer)
offerPacketOptions := offerPacket.ParseOptions()
// Ignore Servers in my Ignore list
for _, ignoreServer := range c.ignoreServers {
if source.Equal(ignoreServer) {
continue
}
if offerPacket.SIAddr().Equal(ignoreServer) {
continue
}
}
if len(offerPacketOptions[dhcp4.OptionDHCPMessageType]) < 1 || dhcp4.MessageType(offerPacketOptions[dhcp4.OptionDHCPMessageType][0]) != dhcp4.Offer || !bytes.Equal(discoverPacket.XId(), offerPacket.XId()) {
continue
}
return offerPacket, nil
}
}
/*
* Send Request Based On the offer Received.
*/
func (c *Client) SendRequest(offerPacket *dhcp4.Packet) (dhcp4.Packet, error) {
requestPacket := c.RequestPacket(offerPacket)
requestPacket.PadToMinSize()
return requestPacket, c.SendPacket(requestPacket)
}
/*
* Retreive Acknowledgement
* Wait for the offer for a specific Request Packet.
*/
func (c *Client) GetAcknowledgement(requestPacket *dhcp4.Packet) (dhcp4.Packet, error) {
for {
c.connection.SetReadTimeout(c.timeout)
readBuffer, source, err := c.connection.ReadFrom()
if err != nil {
return dhcp4.Packet{}, err
}
acknowledgementPacket := dhcp4.Packet(readBuffer)
acknowledgementPacketOptions := acknowledgementPacket.ParseOptions()
// Ignore Servers in my Ignore list
for _, ignoreServer := range c.ignoreServers {
if source.Equal(ignoreServer) {
continue
}
if acknowledgementPacket.SIAddr().Equal(ignoreServer) {
continue
}
}
if !bytes.Equal(requestPacket.XId(), acknowledgementPacket.XId()) || len(acknowledgementPacketOptions[dhcp4.OptionDHCPMessageType]) < 1 || (dhcp4.MessageType(acknowledgementPacketOptions[dhcp4.OptionDHCPMessageType][0]) != dhcp4.ACK && dhcp4.MessageType(acknowledgementPacketOptions[dhcp4.OptionDHCPMessageType][0]) != dhcp4.NAK) {
continue
}
return acknowledgementPacket, nil
}
}
/*
* Send a DHCP Packet.
*/
func (c *Client) SendPacket(packet dhcp4.Packet) error {
return c.connection.Write(packet)
}
/*
* Create Discover Packet
*/
func (c *Client) DiscoverPacket() dhcp4.Packet {
messageid := make([]byte, 4)
if _, err := rand.Read(messageid); err != nil {
panic(err)
}
packet := dhcp4.NewPacket(dhcp4.BootRequest)
packet.SetCHAddr(c.hardwareAddr)
packet.SetXId(messageid)
packet.SetBroadcast(c.broadcast)
packet.AddOption(dhcp4.OptionDHCPMessageType, []byte{byte(dhcp4.Discover)})
//packet.PadToMinSize()
return packet
}
/*
* Create Request Packet
*/
func (c *Client) RequestPacket(offerPacket *dhcp4.Packet) dhcp4.Packet {
offerOptions := offerPacket.ParseOptions()
packet := dhcp4.NewPacket(dhcp4.BootRequest)
packet.SetCHAddr(c.hardwareAddr)
packet.SetXId(offerPacket.XId())
packet.SetCIAddr(offerPacket.CIAddr())
packet.SetSIAddr(offerPacket.SIAddr())
packet.SetBroadcast(c.broadcast)
packet.AddOption(dhcp4.OptionDHCPMessageType, []byte{byte(dhcp4.Request)})
packet.AddOption(dhcp4.OptionRequestedIPAddress, (offerPacket.YIAddr()).To4())
packet.AddOption(dhcp4.OptionServerIdentifier, offerOptions[dhcp4.OptionServerIdentifier])
//packet.PadToMinSize()
return packet
}
/*
* Create Request Packet For a Renew
*/
func (c *Client) RenewalRequestPacket(acknowledgement *dhcp4.Packet) dhcp4.Packet {
messageid := make([]byte, 4)
if _, err := rand.Read(messageid); err != nil {
panic(err)
}
acknowledgementOptions := acknowledgement.ParseOptions()
packet := dhcp4.NewPacket(dhcp4.BootRequest)
packet.SetCHAddr(acknowledgement.CHAddr())
packet.SetXId(messageid)
packet.SetCIAddr(acknowledgement.YIAddr())
packet.SetSIAddr(acknowledgement.SIAddr())
packet.SetBroadcast(c.broadcast)
packet.AddOption(dhcp4.OptionDHCPMessageType, []byte{byte(dhcp4.Request)})
packet.AddOption(dhcp4.OptionRequestedIPAddress, (acknowledgement.YIAddr()).To4())
packet.AddOption(dhcp4.OptionServerIdentifier, acknowledgementOptions[dhcp4.OptionServerIdentifier])
//packet.PadToMinSize()
return packet
}
/*
* Create Release Packet For a Release
*/
func (c *Client) ReleasePacket(acknowledgement *dhcp4.Packet) dhcp4.Packet {
messageid := make([]byte, 4)
if _, err := rand.Read(messageid); err != nil {
panic(err)
}
acknowledgementOptions := acknowledgement.ParseOptions()
packet := dhcp4.NewPacket(dhcp4.BootRequest)
packet.SetCHAddr(acknowledgement.CHAddr())
packet.SetXId(messageid)
packet.SetCIAddr(acknowledgement.YIAddr())
packet.AddOption(dhcp4.OptionDHCPMessageType, []byte{byte(dhcp4.Release)})
packet.AddOption(dhcp4.OptionServerIdentifier, acknowledgementOptions[dhcp4.OptionServerIdentifier])
//packet.PadToMinSize()
return packet
}
/*
* Lets do a Full DHCP Request.
*/
func (c *Client) Request() (bool, dhcp4.Packet, error) {
discoveryPacket, err := c.SendDiscoverPacket()
if err != nil {
return false, discoveryPacket, err
}
offerPacket, err := c.GetOffer(&discoveryPacket)
if err != nil {
return false, offerPacket, err
}
requestPacket, err := c.SendRequest(&offerPacket)
if err != nil {
return false, requestPacket, err
}
acknowledgement, err := c.GetAcknowledgement(&requestPacket)
if err != nil {
return false, acknowledgement, err
}
acknowledgementOptions := acknowledgement.ParseOptions()
if dhcp4.MessageType(acknowledgementOptions[dhcp4.OptionDHCPMessageType][0]) != dhcp4.ACK {
return false, acknowledgement, nil
}
return true, acknowledgement, nil
}
/*
* Renew a lease backed on the Acknowledgement Packet.
* Returns Sucessfull, The AcknoledgementPacket, Any Errors
*/
func (c *Client) Renew(acknowledgement dhcp4.Packet) (bool, dhcp4.Packet, error) {
renewRequest := c.RenewalRequestPacket(&acknowledgement)
renewRequest.PadToMinSize()
err := c.SendPacket(renewRequest)
if err != nil {
return false, renewRequest, err
}
newAcknowledgement, err := c.GetAcknowledgement(&renewRequest)
if err != nil {
return false, newAcknowledgement, err
}
newAcknowledgementOptions := newAcknowledgement.ParseOptions()
if dhcp4.MessageType(newAcknowledgementOptions[dhcp4.OptionDHCPMessageType][0]) != dhcp4.ACK {
return false, newAcknowledgement, nil
}
return true, newAcknowledgement, nil
}
/*
* Release a lease backed on the Acknowledgement Packet.
* Returns Any Errors
*/
func (c *Client) Release(acknowledgement dhcp4.Packet) error {
release := c.ReleasePacket(&acknowledgement)
release.PadToMinSize()
return c.SendPacket(release)
}

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vendor/github.com/d2g/dhcp4client/inetsock.go generated vendored Normal file
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package dhcp4client
import (
"net"
"time"
)
type inetSock struct {
*net.UDPConn
laddr net.UDPAddr
raddr net.UDPAddr
}
func NewInetSock(options ...func(*inetSock) error) (*inetSock, error) {
c := &inetSock{
laddr: net.UDPAddr{IP: net.IPv4(0, 0, 0, 0), Port: 68},
raddr: net.UDPAddr{IP: net.IPv4bcast, Port: 67},
}
err := c.setOption(options...)
if err != nil {
return nil, err
}
conn, err := net.ListenUDP("udp4", &c.laddr)
if err != nil {
return nil, err
}
c.UDPConn = conn
return c, err
}
func (c *inetSock) setOption(options ...func(*inetSock) error) error {
for _, opt := range options {
if err := opt(c); err != nil {
return err
}
}
return nil
}
func SetLocalAddr(l net.UDPAddr) func(*inetSock) error {
return func(c *inetSock) error {
c.laddr = l
return nil
}
}
func SetRemoteAddr(r net.UDPAddr) func(*inetSock) error {
return func(c *inetSock) error {
c.raddr = r
return nil
}
}
func (c *inetSock) Write(packet []byte) error {
_, err := c.WriteToUDP(packet, &c.raddr)
return err
}
func (c *inetSock) ReadFrom() ([]byte, net.IP, error) {
readBuffer := make([]byte, MaxDHCPLen)
n, source, err := c.ReadFromUDP(readBuffer)
if source != nil {
return readBuffer[:n], source.IP, err
} else {
return readBuffer[:n], net.IP{}, err
}
}
func (c *inetSock) SetReadTimeout(t time.Duration) error {
return c.SetReadDeadline(time.Now().Add(t))
}

10
vendor/github.com/d2g/dhcp4client/init.go generated vendored Normal file
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package dhcp4client
import (
"math/rand"
"time"
)
func init() {
rand.Seed(time.Now().Unix())
}

147
vendor/github.com/d2g/dhcp4client/pktsock_linux.go generated vendored Normal file
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package dhcp4client
import (
"crypto/rand"
"encoding/binary"
"net"
"time"
"golang.org/x/sys/unix"
)
const (
minIPHdrLen = 20
maxIPHdrLen = 60
udpHdrLen = 8
ip4Ver = 0x40
ttl = 16
srcPort = 68
dstPort = 67
)
var (
bcastMAC = []byte{255, 255, 255, 255, 255, 255}
)
// abstracts AF_PACKET
type packetSock struct {
fd int
ifindex int
}
func NewPacketSock(ifindex int) (*packetSock, error) {
fd, err := unix.Socket(unix.AF_PACKET, unix.SOCK_DGRAM, int(swap16(unix.ETH_P_IP)))
if err != nil {
return nil, err
}
addr := unix.SockaddrLinklayer{
Ifindex: ifindex,
Protocol: swap16(unix.ETH_P_IP),
}
if err = unix.Bind(fd, &addr); err != nil {
return nil, err
}
return &packetSock{
fd: fd,
ifindex: ifindex,
}, nil
}
func (pc *packetSock) Close() error {
return unix.Close(pc.fd)
}
func (pc *packetSock) Write(packet []byte) error {
lladdr := unix.SockaddrLinklayer{
Ifindex: pc.ifindex,
Protocol: swap16(unix.ETH_P_IP),
Halen: uint8(len(bcastMAC)),
}
copy(lladdr.Addr[:], bcastMAC)
pkt := make([]byte, minIPHdrLen+udpHdrLen+len(packet))
fillIPHdr(pkt[0:minIPHdrLen], udpHdrLen+uint16(len(packet)))
fillUDPHdr(pkt[minIPHdrLen:minIPHdrLen+udpHdrLen], uint16(len(packet)))
// payload
copy(pkt[minIPHdrLen+udpHdrLen:len(pkt)], packet)
return unix.Sendto(pc.fd, pkt, 0, &lladdr)
}
func (pc *packetSock) ReadFrom() ([]byte, net.IP, error) {
pkt := make([]byte, maxIPHdrLen+udpHdrLen+MaxDHCPLen)
n, _, err := unix.Recvfrom(pc.fd, pkt, 0)
if err != nil {
return nil, nil, err
}
// IP hdr len
ihl := int(pkt[0]&0x0F) * 4
// Source IP address
src := net.IP(pkt[12:16])
return pkt[ihl+udpHdrLen : n], src, nil
}
func (pc *packetSock) SetReadTimeout(t time.Duration) error {
tv := unix.NsecToTimeval(t.Nanoseconds())
return unix.SetsockoptTimeval(pc.fd, unix.SOL_SOCKET, unix.SO_RCVTIMEO, &tv)
}
// compute's 1's complement checksum
func chksum(p []byte, csum []byte) {
cklen := len(p)
s := uint32(0)
for i := 0; i < (cklen - 1); i += 2 {
s += uint32(p[i+1])<<8 | uint32(p[i])
}
if cklen&1 == 1 {
s += uint32(p[cklen-1])
}
s = (s >> 16) + (s & 0xffff)
s = s + (s >> 16)
s = ^s
csum[0] = uint8(s & 0xff)
csum[1] = uint8(s >> 8)
}
func fillIPHdr(hdr []byte, payloadLen uint16) {
// version + IHL
hdr[0] = ip4Ver | (minIPHdrLen / 4)
// total length
binary.BigEndian.PutUint16(hdr[2:4], uint16(len(hdr))+payloadLen)
// identification
if _, err := rand.Read(hdr[4:5]); err != nil {
panic(err)
}
// TTL
hdr[8] = 16
// Protocol
hdr[9] = unix.IPPROTO_UDP
// dst IP
copy(hdr[16:20], net.IPv4bcast.To4())
// compute IP hdr checksum
chksum(hdr[0:len(hdr)], hdr[10:12])
}
func fillUDPHdr(hdr []byte, payloadLen uint16) {
// src port
binary.BigEndian.PutUint16(hdr[0:2], srcPort)
// dest port
binary.BigEndian.PutUint16(hdr[2:4], dstPort)
// length
binary.BigEndian.PutUint16(hdr[4:6], udpHdrLen+payloadLen)
}
func swap16(x uint16) uint16 {
var b [2]byte
binary.BigEndian.PutUint16(b[:], x)
return binary.LittleEndian.Uint16(b[:])
}