mirror of
https://github.com/crowdsecurity/crowdsec.git
synced 2025-05-10 20:05:55 +02:00
f8f0b2a211
* custom duration type for "cscli decisions list", "cscli alerts list" * custom duration type for "cscli allowlist add" * custom duration type for "cscli machines prune" * custom duration type for "cscli bouncers prune" * replace old function ParseDuration * use custom duration type in expr helpers * update dependency * lint * test fix * support days in 'metrics_max_age' * DurationWithDays for 'max_age'
68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
package database
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import (
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"encoding/binary"
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"fmt"
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"net"
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)
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func IP2Int(ip net.IP) uint32 {
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if len(ip) == 16 {
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return binary.BigEndian.Uint32(ip[12:16])
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}
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return binary.BigEndian.Uint32(ip)
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}
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func Int2ip(nn uint32) net.IP {
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ip := make(net.IP, 4)
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binary.BigEndian.PutUint32(ip, nn)
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return ip
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}
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func IsIpv4(host string) bool {
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return net.ParseIP(host) != nil
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}
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// Stolen from : https://github.com/llimllib/ipaddress/
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// Return the final address of a net range. Convert to IPv4 if possible,
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// otherwise return an ipv6
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func LastAddress(n *net.IPNet) net.IP {
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ip := n.IP.To4()
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if ip == nil {
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ip = n.IP
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return net.IP{
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ip[0] | ^n.Mask[0], ip[1] | ^n.Mask[1], ip[2] | ^n.Mask[2],
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ip[3] | ^n.Mask[3], ip[4] | ^n.Mask[4], ip[5] | ^n.Mask[5],
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ip[6] | ^n.Mask[6], ip[7] | ^n.Mask[7], ip[8] | ^n.Mask[8],
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ip[9] | ^n.Mask[9], ip[10] | ^n.Mask[10], ip[11] | ^n.Mask[11],
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ip[12] | ^n.Mask[12], ip[13] | ^n.Mask[13], ip[14] | ^n.Mask[14],
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ip[15] | ^n.Mask[15],
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}
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}
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return net.IPv4(
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ip[0]|^n.Mask[0],
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ip[1]|^n.Mask[1],
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ip[2]|^n.Mask[2],
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ip[3]|^n.Mask[3])
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}
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// GetIpsFromIpRange takes a CIDR range and returns the start and end IP
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func GetIpsFromIpRange(host string) (int64, int64, error) {
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_, parsedRange, err := net.ParseCIDR(host)
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if err != nil {
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return 0, 0, fmt.Errorf("'%s' is not a valid CIDR", host)
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}
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if parsedRange == nil {
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return 0, 0, fmt.Errorf("unable to parse network: %w", err)
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}
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ipStart := int64(IP2Int(parsedRange.IP))
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ipEnd := int64(IP2Int(LastAddress(parsedRange)))
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return ipStart, ipEnd, nil
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}
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