"함수 is ip()"의 두 판 사이의 차이

2023년 4월 7일 (금) 19:31 기준 최신판

함수 is_ip()

1 Bash[ | ]

순수 bash

function is_ip() {
	IFS='.' read -ra nums <<< "$1"
	if [ ${#nums[@]} -ne 4 ]; then echo 0; return; fi
	for num in "${nums[@]}"; do
		if [ "$num" != "$((10#$num))" ]||[ $num -lt 0 ]||[ $num -gt 255 ]; then echo 0; return; fi
	done	
	echo 1
}

# 1
is_ip 0.0.0.0
is_ip 0.0.0.1
is_ip 0.0.1.0
is_ip 255.255.255.255
is_ip 135.79.246.80

# 0
is_ip 0.0.0.256
is_ip 0.0.0.0.0
is_ip 0.0.0.00
is_ip 135.79.246.080

신버전 ipcalc 활용(v0.41)

echo $((`ipcalc 135.79.246.80 | grep INVALID | wc -l`^1))
# 1
echo $((`ipcalc 135.79.246.280 | grep INVALID | wc -l`^1))
# 0

구버전 ipcalc 활용(2008)

ipcalc -s -c 135.79.246.80; echo $(($?^1))
# 1
ipcalc -s -c 135.79.246.280; echo $(($?^1))
# 0

2 Go[ | ]

Go isIP() 문서를 참고하십시오.

package main

import (
	"fmt"
	"net"
)

func isIP(ip string) bool {
	return net.ParseIP(ip) != nil
}

func main() {
	// true
	fmt.Println(isIP("10.40.210.253"))
	fmt.Println(isIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"))

	// false
	fmt.Println(isIP("1000.40.210.253"))
	fmt.Println(isIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334:3445"))
}

3 PHP[ | ]

PHP is_ip() 문서를 참고하십시오.

function is_ip($ip) { return ip2long($ip)?true:false; }

# true
var_dump( is_ip('1.1.1.1') );
var_dump( is_ip('135.79.246.80') );

# false
var_dump( is_ip('1.1.1.1.') );
var_dump( is_ip('1.1.1.256') );
var_dump( is_ip('135.79.256.080') );

4 Python[ | ]

파이썬 is_ip() 문서를 참고하십시오.

import ipaddress
def is_ip(ip):
    try:
        ipaddress.ip_address(ip)
    except ValueError:
        return False
    return True
    
# True
print( is_ip('1.1.1.1') )
print( is_ip('192.168.0.1') )
print( is_ip('135.79.246.80') )

# False
print( is_ip('1.1.1.1.') )
print( is_ip('1.1.1.256') )
print( is_ip('192.168.0.256') )
print( is_ip('135.79.256.080') )

5 같이 보기[ | ]

@@ 1번째 줄: / 1번째 줄: @@
+[[분류: IP]]
 [[category: validation]]
-;is_ip
+{{DISPLAYTITLE:함수 is_ip()}}
+;함수 is_ip()
 ==Bash==
 [[category: Bash]]
-<source lang='bash'>
+* 순수 bash
-IP=135.79.246.80
+<syntaxhighlight lang='bash'>
-IS_IP=`ipcalc -s -c $IP; echo $(($?^1))`
+function is_ip() {
-echo $IS_IP
+	IFS='.' read -ra nums <<< "$1"
+	if [ ${#nums[@]} -ne 4 ]; then echo 0; return; fi
+	for num in "${nums[@]}"; do
+		if [ "$num" != "$((10#$num))" ]||[ $num -lt 0 ]||[ $num -gt 255 ]; then echo 0; return; fi
+	done
+	echo 1
+}
+# 1
+is_ip 0.0.0.0
+is_ip 0.0.0.1
+is_ip 0.0.1.0
+is_ip 255.255.255.255
+is_ip 135.79.246.80
+# 0
+is_ip 0.0.0.256
+is_ip 0.0.0.0.0
+is_ip 0.0.0.00
+is_ip 135.79.246.080
+</syntaxhighlight>
+* 신버전 [[ipcalc]] 활용(v0.41)
+<syntaxhighlight lang='bash'>
+echo $((`ipcalc 135.79.246.80 | grep INVALID | wc -l`^1))
+# 1
+echo $((`ipcalc 135.79.246.280 | grep INVALID | wc -l`^1))
+# 0
+</syntaxhighlight>
+* 구버전 [[ipcalc]] 활용(2008)
+<syntaxhighlight lang='bash'>
+ipcalc -s -c 135.79.246.80; echo $(($?^1))
 # 1
-</source>
+ipcalc -s -c 135.79.246.280; echo $(($?^1))
-<source lang='bash'>
-IP=135.79.246.080
-IS_IP=`ipcalc -s -c $IP; echo $(($?^1))`
-echo $IS_IP
 # 0
-</source>
+</syntaxhighlight>
+==Go==
+{{참고|Go isIP()}}
+[[분류: Go]]
+<syntaxhighlight lang='go' run>
+package main
+import (
+	"fmt"
+	"net"
+)
+func isIP(ip string) bool {
+	return net.ParseIP(ip) != nil
+}
+func main() {
+	// true
+	fmt.Println(isIP("10.40.210.253"))
+	fmt.Println(isIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334"))
+	// false
+	fmt.Println(isIP("1000.40.210.253"))
+	fmt.Println(isIP("2001:0db8:85a3:0000:0000:8a2e:0370:7334:3445"))
+}
+</syntaxhighlight>
 ==PHP==
+{{참고|PHP is_ip()}}
 [[category: PHP]]
-<source lang='php'>
+<syntaxhighlight lang='php' run>
-echo ip2long('135.79.246.80') === false ? 'NO' : 'YES';
+function is_ip($ip) { return ip2long($ip)?true:false; }
-// YES
-echo ip2long('135.79.246.080') === false ? 'NO' : 'YES';
+# true
-// NO
+var_dump( is_ip('1.1.1.1') );
-</source>
+var_dump( is_ip('135.79.246.80') );
-<source lang='php'>
-function is_ip($ip) {
+# false
-  if( ip2long($ip) === false) return false;
+var_dump( is_ip('1.1.1.1.') );
-  return true;
+var_dump( is_ip('1.1.1.256') );
-}
+var_dump( is_ip('135.79.256.080') );
-</source>
+</syntaxhighlight>
+==Python==
+{{참고|파이썬 is_ip()}}
+[[분류: Python]]
+<syntaxhighlight lang='python'>
+import ipaddress
+def is_ip(ip):
+    try:
+        ipaddress.ip_address(ip)
+    except ValueError:
+        return False
+    return True
+# True
+print( is_ip('1.1.1.1') )
+print( is_ip('192.168.0.1') )
+print( is_ip('135.79.246.80') )
+# False
+print( is_ip('1.1.1.1.') )
+print( is_ip('1.1.1.256') )
+print( is_ip('192.168.0.256') )
+print( is_ip('135.79.256.080') )
+</syntaxhighlight>
 ==같이 보기==
-*[[ip2long]]
+* [[함수 is_private_ip()]]
-*[[ipcalc]]
+* [[함수 is_ip_substring()]]
-*[[IP 주소]]
+* [[함수 ip2long()]]
+* [[ipcalc]]
+* [[IP 주소]]