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go get github.com/apparentlymart/go-cidr@v1.0.1 

This includes fixes in the handling of IPv6 prefixes that leave a host
portion longer than the size of int on the target platform.
This commit is contained in:
wata_mac 2019-09-09 14:04:56 -07:00 committed by Martin Atkins
parent ae3048fb98
commit 6f83197856
5 changed files with 22 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
go.mod
View File

@ -11,7 +11,7 @@ require (
github.com/aliyun/alibaba-cloud-sdk-go v0.0.0-20190329064014-6e358769c32a
github.com/aliyun/aliyun-oss-go-sdk v0.0.0-20190103054945-8205d1f41e70
github.com/aliyun/aliyun-tablestore-go-sdk v4.1.2+incompatible
github.com/apparentlymart/go-cidr v1.0.0
github.com/apparentlymart/go-cidr v1.0.1
github.com/apparentlymart/go-dump v0.0.0-20190214190832-042adf3cf4a0
github.com/armon/circbuf v0.0.0-20190214190532-5111143e8da2
github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da // indirect

4
go.sum
View File

@ -38,8 +38,8 @@ github.com/antchfx/xpath v0.0.0-20190129040759-c8489ed3251e h1:ptBAamGVd6CfRsUty
github.com/antchfx/xpath v0.0.0-20190129040759-c8489ed3251e/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk=
github.com/antchfx/xquery v0.0.0-20180515051857-ad5b8c7a47b0 h1:JaCC8jz0zdMLk2m+qCCVLLLM/PL93p84w4pK3aJWj60=
github.com/antchfx/xquery v0.0.0-20180515051857-ad5b8c7a47b0/go.mod h1:LzD22aAzDP8/dyiCKFp31He4m2GPjl0AFyzDtZzUu9M=
github.com/apparentlymart/go-cidr v1.0.0 h1:lGDvXx8Lv9QHjrAVP7jyzleG4F9+FkRhJcEsDFxeb8w=
github.com/apparentlymart/go-cidr v1.0.0/go.mod h1:EBcsNrHc3zQeuaeCeCtQruQm+n9/YjEn/vI25Lg7Gwc=
github.com/apparentlymart/go-cidr v1.0.1 h1:NmIwLZ/KdsjIUlhf+/Np40atNXm/+lZ5txfTJ/SpF+U=
github.com/apparentlymart/go-cidr v1.0.1/go.mod h1:EBcsNrHc3zQeuaeCeCtQruQm+n9/YjEn/vI25Lg7Gwc=
github.com/apparentlymart/go-dump v0.0.0-20180507223929-23540a00eaa3/go.mod h1:oL81AME2rN47vu18xqj1S1jPIPuN7afo62yKTNn3XMM=
github.com/apparentlymart/go-dump v0.0.0-20190214190832-042adf3cf4a0 h1:MzVXffFUye+ZcSR6opIgz9Co7WcDx6ZcY+RjfFHoA0I=
github.com/apparentlymart/go-dump v0.0.0-20190214190832-042adf3cf4a0/go.mod h1:oL81AME2rN47vu18xqj1S1jPIPuN7afo62yKTNn3XMM=

26
vendor/github.com/apparentlymart/go-cidr/cidr/cidr.go generated vendored
View File

@ -44,7 +44,7 @@ func Subnet(base *net.IPNet, newBits int, num int) (*net.IPNet, error) {
}
return &net.IPNet{
IP: insertNumIntoIP(ip, num, newPrefixLen),
IP: insertNumIntoIP(ip, big.NewInt(int64(num)), newPrefixLen),
Mask: net.CIDRMask(newPrefixLen, addrLen),
}, nil
}
@ -56,19 +56,23 @@ func Subnet(base *net.IPNet, newBits int, num int) (*net.IPNet, error) {
func Host(base *net.IPNet, num int) (net.IP, error) {
ip := base.IP
mask := base.Mask
bigNum := big.NewInt(int64(num))
parentLen, addrLen := mask.Size()
hostLen := addrLen - parentLen
maxHostNum := uint64(1<<uint64(hostLen)) - 1
maxHostNum := big.NewInt(int64(1))
maxHostNum.Lsh(maxHostNum, uint(hostLen))
maxHostNum.Sub(maxHostNum, big.NewInt(1))
numUint64 := uint64(num)
if num < 0 {
numUint64 = uint64(-num) - 1
num = int(maxHostNum - numUint64)
numUint64 := big.NewInt(int64(bigNum.Uint64()))
if bigNum.Cmp(big.NewInt(0)) == -1 {
numUint64.Neg(bigNum)
numUint64.Sub(numUint64, big.NewInt(int64(1)))
bigNum.Sub(maxHostNum, numUint64)
}
if numUint64 > maxHostNum {
if numUint64.Cmp(maxHostNum) == 1 {
return nil, fmt.Errorf("prefix of %d does not accommodate a host numbered %d", parentLen, num)
}
var bitlength int
@ -77,7 +81,7 @@ func Host(base *net.IPNet, num int) (net.IP, error) {
} else {
bitlength = 128
}
return insertNumIntoIP(ip, num, bitlength), nil
return insertNumIntoIP(ip, bigNum, bitlength), nil
}
// AddressRange returns the first and last addresses in the given CIDR range.
@ -129,7 +133,11 @@ func VerifyNoOverlap(subnets []*net.IPNet, CIDRBlock *net.IPNet) error {
if !CIDRBlock.Contains(firstLastIP[i][0]) || !CIDRBlock.Contains(firstLastIP[i][1]) {
return fmt.Errorf("%s does not fully contain %s", CIDRBlock.String(), s.String())
}
for j := i + 1; j < len(subnets); j++ {
for j := 0; j < len(subnets); j++ {
if i == j {
continue
}
first := firstLastIP[j][0]
last := firstLastIP[j][1]
if s.Contains(first) || s.Contains(last) {

3
vendor/github.com/apparentlymart/go-cidr/cidr/wrangling.go generated vendored
View File

@ -29,9 +29,8 @@ func intToIP(ipInt *big.Int, bits int) net.IP {
return net.IP(ret)
}
func insertNumIntoIP(ip net.IP, num int, prefixLen int) net.IP {
func insertNumIntoIP(ip net.IP, bigNum *big.Int, prefixLen int) net.IP {
ipInt, totalBits := ipToInt(ip)
bigNum := big.NewInt(int64(num))
bigNum.Lsh(bigNum, uint(totalBits-prefixLen))
ipInt.Or(ipInt, bigNum)
return intToIP(ipInt, totalBits)

2
vendor/modules.txt vendored
View File

@ -70,7 +70,7 @@ github.com/aliyun/aliyun-tablestore-go-sdk/tablestore/search
github.com/antchfx/xpath
# github.com/antchfx/xquery v0.0.0-20180515051857-ad5b8c7a47b0
github.com/antchfx/xquery/xml
# github.com/apparentlymart/go-cidr v1.0.0
# github.com/apparentlymart/go-cidr v1.0.1
github.com/apparentlymart/go-cidr/cidr
# github.com/apparentlymart/go-dump v0.0.0-20190214190832-042adf3cf4a0
github.com/apparentlymart/go-dump/dump