96 lines
1.7 KiB
Go
96 lines
1.7 KiB
Go
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package main
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import (
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"bufio"
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"fmt"
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"os"
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"regexp"
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"strings"
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)
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func main() {
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ips := stdinToStringSlice()
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var allowTLS []string
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var allowSSL []string
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for _, ip := range ips {
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if hasTLS(ip) {
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allowTLS = append(allowTLS, ip)
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}
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if hasSSL(ip) {
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allowSSL = append(allowSSL, ip)
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}
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}
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fmt.Println("IPs supporting TLS: ", len(allowTLS))
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fmt.Println("IPs supporting SSL: ", len(allowSSL))
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}
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func hasTLS(ip string) bool {
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bad := false
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hprSq := getHypernetSqns(ip)
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for _, hpr := range hprSq {
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if hasABBA(hpr) {
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return false
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}
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}
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if !bad && hasABBA(ip) {
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return true
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}
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return false
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}
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func hasSSL(ip string) bool {
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hprSq := getHypernetSqns(ip)
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rest := cutHypernetSqns(ip, hprSq)
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for i := range rest {
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if len(rest) > i+2 {
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if rest[i] == rest[i+2] && rest[i] != rest[i+1] {
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bab := string(rest[i+1]) + string(rest[i]) + string(rest[i+1])
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for j := range hprSq {
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if strings.Contains(hprSq[j], bab) {
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return true
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}
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}
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}
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}
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}
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return false
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}
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func getHypernetSqns(ip string) []string {
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var ret []string
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re := regexp.MustCompile(`\[[^\[]*\]`)
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s := re.FindAll([]byte(ip), -1)
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for i := range s {
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ret = append(ret, string(s[i][1:len(s[i])-1]))
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}
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return ret
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}
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func cutHypernetSqns(ip string, hpn []string) string {
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for i := range hpn {
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ip = strings.Replace(ip, hpn[i], "", -1)
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}
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return ip
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}
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func hasABBA(ip string) bool {
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for j := range ip {
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if len(ip) > j+3 {
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if ip[j] == ip[j+3] && ip[j+1] == ip[j+2] && ip[j] != ip[j+1] {
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return true
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}
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}
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}
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return false
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}
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func stdinToStringSlice() []string {
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var input []string
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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input = append(input, scanner.Text())
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}
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return input
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}
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