Abstraction
모바일 브라우저 접근시 자동으로 모바일 사이트로 보내기 위해 Java에서 모바일 브라우저를 판별하는 방법에 대해 알아본다. User-Agent 를 판별하는 부분은 User-Agent detection: The Code 를 참조했다.
Java 코드
public static String getFirstVersionNumber(String a_userAgent,
int a_position, int numDigits) {
String ver = getVersionNumber(a_userAgent, a_position);
if (ver == null)
return "";
int i = 0;
String res = "";
while (i < ver.length() && i < numDigits) {
res += String.valueOf(ver.charAt(i));
i++;
}
return res;
}
public static String getVersionNumber(String a_userAgent, int a_position) {
if (a_position < 0)
return "";
StringBuffer res = new StringBuffer();
int status = 0;
while (a_position < a_userAgent.length()) {
char c = a_userAgent.charAt(a_position);
switch (status) {
case 0: // <SPAN class="codecomment"> No valid digits encountered
// yet</span>
if (c == ‘ ‘ || c == ‘/’)
break;
if (c == ‘;’ || c == ‘)’)
return "";
status = 1;
case 1: // <SPAN class="codecomment"> Version number in
// progress</span>
if (c == ‘;’ || c == ‘/’ || c == ‘)’ || c == ‘(‘ || c == ‘[‘)
return res.toString().trim();
if (c == ‘ ‘)
status = 2;
res.append(c);
break;
case 2: // <SPAN class="codecomment"> Space encountered – Might need
// to end the parsing</span>
if ((Character.isLetter(c) && Character.isLowerCase(c))
|| Character.isDigit(c)) {
res.append(c);
status = 1;
} else
return res.toString().trim();
break;
}
a_position++;
}
return res.toString().trim();
}
public static String[] getArray(String a, String b, String c) {
String[] res = new String[3];
res[0] = a;
res[1] = b;
res[2] = c;
return res;
}
public static String[] getBotName(String userAgent) {
userAgent = userAgent.toLowerCase();
int pos = 0;
String res = null;
if ((pos = userAgent.indexOf("help.yahoo.com/")) > -1) {
res = "Yahoo";
pos += 7;
} else if ((pos = userAgent.indexOf("google/")) > -1) {
res = "Google";
pos += 7;
} else if ((pos = userAgent.indexOf("msnbot/")) > -1) {
res = "MSNBot";
pos += 7;
} else if ((pos = userAgent.indexOf("googlebot/")) > -1) {
res = "Google";
pos += 10;
} else if ((pos = userAgent.indexOf("webcrawler/")) > -1) {
res = "WebCrawler";
pos += 11;
} else
// <SPAN class="codecomment"> The following two bots don’t have any
// version number in their User-Agent strings.</span>
if ((pos = userAgent.indexOf("inktomi")) > -1) {
res = "Inktomi";
pos = -1;
} else if ((pos = userAgent.indexOf("teoma")) > -1) {
res = "Teoma";
pos = -1;
}
if (res == null)
return null;
return getArray(res, res, res + getVersionNumber(userAgent, pos));
}
public static String[] getOS(String userAgent) {
if (getBotName(userAgent) != null)
return getArray("Bot", "Bot", "Bot");
String[] res = null;
int pos;
if ((pos = userAgent.indexOf("Windows CE")) > -1) {
res = getArray("Win", "WinCE", "Win");
} else if ((pos = userAgent.indexOf("Windows-NT")) > -1) {
res = getArray("Win", "WinNT", "Win"
+ getVersionNumber(userAgent, pos + 8));
} else if (userAgent.indexOf("Windows NT") > -1) {
// <SPAN class="codecomment"> The different versions of Windows NT
// are decoded in the verbosity level 2</span>
// <SPAN class="codecomment"> ie: Windows NT 5.1 = Windows XP</span>
if ((pos = userAgent.indexOf("Windows NT 5.1")) > -1) {
res = getArray("Win", "WinXP", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows NT 6.0")) > -1) {
res = getArray("Win", "Vista", "Vista"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows NT 6.1")) > -1) {
res = getArray("Win", "Seven", "Seven "
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows NT 5.0")) > -1) {
res = getArray("Win", "Win2000", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows NT 5.2")) > -1) {
res = getArray("Win", "Win2003", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows NT 4.0")) > -1) {
res = getArray("Win", "WinNT4", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows NT)")) > -1) {
res = getArray("Win", "WinNT", "WinNT");
} else if ((pos = userAgent.indexOf("Windows NT;")) > -1) {
res = getArray("Win", "WinNT", "WinNT");
} else
res = getArray("Win", "<B>WinNT?</B>", "<B>WinNT?</B>");
} else if (userAgent.indexOf("Win") > -1) {
if (userAgent.indexOf("Windows") > -1) {
if ((pos = userAgent.indexOf("Windows 98")) > -1) {
res = getArray("Win", "Win98", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows_98")) > -1) {
res = getArray("Win", "Win98", "Win"
+ getVersionNumber(userAgent, pos + 8));
} else if ((pos = userAgent.indexOf("Windows 2000")) > -1) {
res = getArray("Win", "Win2000", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows 95")) > -1) {
res = getArray("Win", "Win95", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows 9x")) > -1) {
res = getArray("Win", "Win9x", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows ME")) > -1) {
res = getArray("Win", "WinME", "Win"
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Windows 3.1")) > -1) {
res = getArray("Win", "Win31", "Win"
+ getVersionNumber(userAgent, pos + 7));
}
// <SPAN class="codecomment"> If no version was found, rely on
// the following code to detect "WinXX"</span>
// <SPAN class="codecomment"> As some User-Agents include two
// references to Windows</span>
// <SPAN class="codecomment"> Ex: Mozilla/5.0 (Windows; U;
// Win98; en-US; rv:1.5)</span>
}
if (res == null) {
if ((pos = userAgent.indexOf("Win98")) > -1) {
res = getArray("Win", "Win98", "Win"
+ getVersionNumber(userAgent, pos + 3));
} else if ((pos = userAgent.indexOf("Win31")) > -1) {
res = getArray("Win", "Win31", "Win"
+ getVersionNumber(userAgent, pos + 3));
} else if ((pos = userAgent.indexOf("Win95")) > -1) {
res = getArray("Win", "Win95", "Win"
+ getVersionNumber(userAgent, pos + 3));
} else if ((pos = userAgent.indexOf("Win 9x")) > -1) {
res = getArray("Win", "Win9x", "Win"
+ getVersionNumber(userAgent, pos + 3));
} else if ((pos = userAgent.indexOf("WinNT4.0")) > -1) {
res = getArray("Win", "WinNT4", "Win"
+ getVersionNumber(userAgent, pos + 3));
} else if ((pos = userAgent.indexOf("WinNT")) > -1) {
res = getArray("Win", "WinNT", "Win"
+ getVersionNumber(userAgent, pos + 3));
}
}
if (res == null) {
if ((pos = userAgent.indexOf("Windows")) > -1) {
res = getArray("Win", "<B>Win?</B>", "<B>Win?"
+ getVersionNumber(userAgent, pos + 7) + "</B>");
} else if ((pos = userAgent.indexOf("Win")) > -1) {
res = getArray("Win", "<B>Win?</B>", "<B>Win?"
+ getVersionNumber(userAgent, pos + 3) + "</B>");
} else
// <SPAN class="codecomment"> Should not happen at this
// point</span>
res = getArray("Win", "<B>Win?</B>", "<B>Win?</B>");
}
} else if ((pos = userAgent.indexOf("Mac OS X")) > -1) {
if ((userAgent.indexOf("iPhone")) > -1) {
if ((userAgent.indexOf("iPad")) > -1) {
pos = userAgent.indexOf("iPhone OS");
res = getArray("Mac", "MacOSX-iPad", "MacOS-iPad "
+ ((pos < 0) ? ""
: getVersionNumber(userAgent, pos + 9)));
} else {
pos = userAgent.indexOf("iPhone OS");
res = getArray("Mac", "MacOSX-iPhone", "MacOS-iPhone "
+ ((pos < 0) ? ""
: getVersionNumber(userAgent, pos + 9)));
}
} else
res = getArray("Mac", "MacOSX", "MacOS "
+ getVersionNumber(userAgent, pos + 8));
} else if ((pos = userAgent.indexOf("Android")) > -1) {
res = getArray("Android", "Android", "Android");
} else if ((pos = userAgent.indexOf("Mac_PowerPC")) > -1) {
res = getArray("Mac", "MacPPC", "MacOS "
+ getVersionNumber(userAgent, pos + 3));
} else if ((pos = userAgent.indexOf("Macintosh")) > -1) {
if (userAgent.indexOf("PPC") > -1)
res = getArray("Mac", "MacPPC", "MacOS?");
else
res = getArray("Mac?", "Mac?", "MacOS?");
} else if ((pos = userAgent.indexOf("FreeBSD")) > -1) {
res = getArray("*BSD", "*BSD FreeBSD", "FreeBSD "
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("OpenBSD")) > -1) {
res = getArray("*BSD", "*BSD OpenBSD", "OpenBSD "
+ getVersionNumber(userAgent, pos + 7));
} else if ((pos = userAgent.indexOf("Linux")) > -1) {
String detail = "Linux " + getVersionNumber(userAgent, pos + 5);
String med = "Linux";
if ((pos = userAgent.indexOf("Ubuntu/")) > -1) {
detail = "Ubuntu " + getVersionNumber(userAgent, pos + 7);
med += " Ubuntu";
}
res = getArray("Linux", med, detail);
} else if ((pos = userAgent.indexOf("CentOS")) > -1) {
res = getArray("Linux", "Linux CentOS", "CentOS");
} else if ((pos = userAgent.indexOf("NetBSD")) > -1) {
res = getArray("*BSD", "*BSD NetBSD", "NetBSD "
+ getVersionNumber(userAgent, pos + 6));
} else if ((pos = userAgent.indexOf("Unix")) > -1) {
res = getArray("Linux", "Linux", "Linux "
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("SunOS")) > -1) {
res = getArray("Unix", "SunOS", "SunOS"
+ getVersionNumber(userAgent, pos + 5));
} else if ((pos = userAgent.indexOf("IRIX")) > -1) {
res = getArray("Unix", "IRIX", "IRIX"
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("SonyEricsson")) > -1) {
res = getArray("SonyEricsson", "SonyEricsson", "SonyEricsson"
+ getVersionNumber(userAgent, pos + 12));
} else if ((pos = userAgent.indexOf("Nokia")) > -1) {
res = getArray("Nokia", "Nokia", "Nokia"
+ getVersionNumber(userAgent, pos + 5));
} else if ((pos = userAgent.indexOf("BlackBerry")) > -1) {
res = getArray("BlackBerry", "BlackBerry", "BlackBerry"
+ getVersionNumber(userAgent, pos + 10));
} else if ((pos = userAgent.indexOf("SymbianOS")) > -1) {
res = getArray("SymbianOS", "SymbianOS", "SymbianOS"
+ getVersionNumber(userAgent, pos + 10));
} else if ((pos = userAgent.indexOf("BeOS")) > -1) {
res = getArray("BeOS", "BeOS", "BeOS");
} else if ((pos = userAgent.indexOf("Nintendo Wii")) > -1) {
res = getArray("Nintendo Wii", "Nintendo Wii", "Nintendo Wii"
+ getVersionNumber(userAgent, pos + 10));
} else
res = getArray("<b>?</b>", "<b>?</b>", "<b>?</b>");
return res;
}
public static String[] getBrowser(String userAgent) {
String[] botName;
if ((botName = getBotName(userAgent)) != null)
return botName;
String[] res = null;
int pos;
if ((pos = userAgent.indexOf("Lotus-Notes/")) > -1) {
res = getArray("LotusNotes", "LotusNotes", "LotusNotes"
+ getVersionNumber(userAgent, pos + 12));
} else if ((pos = userAgent.indexOf("Opera")) > -1) {
res = getArray("Opera", "Opera"
+ getFirstVersionNumber(userAgent, pos + 5, 1), "Opera"
+ getVersionNumber(userAgent, pos + 5));
} else if (userAgent.indexOf("MSIE") > -1) {
if ((pos = userAgent.indexOf("MSIE 6.0")) > -1) {
res = getArray("MSIE", "MSIE6", "MSIE"
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("MSIE 5.0")) > -1) {
res = getArray("MSIE", "MSIE5", "MSIE"
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("MSIE 5.5")) > -1) {
res = getArray("MSIE", "MSIE5.5", "MSIE"
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("MSIE 5.")) > -1) {
res = getArray("MSIE", "MSIE5.x", "MSIE"
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("MSIE 4")) > -1) {
res = getArray("MSIE", "MSIE4", "MSIE"
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("MSIE 7")) > -1
&& userAgent.indexOf("Trident/4.0") < 0) {
res = getArray("MSIE", "MSIE7", "MSIE"
+ getVersionNumber(userAgent, pos + 4));
} else if ((pos = userAgent.indexOf("MSIE 8")) > -1
|| userAgent.indexOf("Trident/4.0") > -1) {
res = getArray("MSIE", "MSIE8", "MSIE"
+ getVersionNumber(userAgent, pos + 4));
} else
res = getArray("MSIE", "<B>MSIE?</B>", "<B>MSIE?"
+ getVersionNumber(userAgent,
userAgent.indexOf("MSIE") + 4) + "</B>");
} else if ((pos = userAgent.indexOf("Gecko/")) > -1) {
res = getArray("Gecko", "Gecko", "Gecko"
+ getFirstVersionNumber(userAgent, pos + 5, 4));
if ((pos = userAgent.indexOf("Camino/")) > -1) {
res[1] += "(Camino)";
res[2] += "(Camino" + getVersionNumber(userAgent, pos + 7)
+ ")";
} else if ((pos = userAgent.indexOf("Chimera/")) > -1) {
res[1] += "(Chimera)";
res[2] += "(Chimera" + getVersionNumber(userAgent, pos + 8)
+ ")";
} else if ((pos = userAgent.indexOf("Firebird/")) > -1) {
res[1] += "(Firebird)";
res[2] += "(Firebird" + getVersionNumber(userAgent, pos + 9)
+ ")";
} else if ((pos = userAgent.indexOf("Phoenix/")) > -1) {
res[1] += "(Phoenix)";
res[2] += "(Phoenix" + getVersionNumber(userAgent, pos + 8)
+ ")";
} else if ((pos = userAgent.indexOf("Galeon/")) > -1) {
res[1] += "(Galeon)";
res[2] += "(Galeon" + getVersionNumber(userAgent, pos + 7)
+ ")";
} else if ((pos = userAgent.indexOf("Firefox/")) > -1) {
res[1] += "(Firefox)";
res[2] += "(Firefox" + getVersionNumber(userAgent, pos + 8)
+ ")";
} else if ((pos = userAgent.indexOf("Netscape/")) > -1) {
if ((pos = userAgent.indexOf("Netscape/6")) > -1) {
res[1] += "(NS6)";
res[2] += "(NS" + getVersionNumber(userAgent, pos + 9)
+ ")";
} else if ((pos = userAgent.indexOf("Netscape/7")) > -1) {
res[1] += "(NS7)";
res[2] += "(NS" + getVersionNumber(userAgent, pos + 9)
+ ")";
} else {
res[1] += "(NS?)";
res[2] += "(NS?"
+ getVersionNumber(userAgent, userAgent
.indexOf("Netscape/") + 9) + ")";
}
}
} else if ((pos = userAgent.indexOf("Netscape/")) > -1) {
if ((pos = userAgent.indexOf("Netscape/4")) > -1) {
res = getArray("NS", "NS4", "NS"
+ getVersionNumber(userAgent, pos + 9));
} else
res = getArray("NS", "NS?", "NS?"
+ getVersionNumber(userAgent, pos + 9));
} else if ((pos = userAgent.indexOf("Chrome/")) > -1) {
res = getArray("KHTML", "KHTML(Chrome)", "KHTML(Chrome"
+ getVersionNumber(userAgent, pos + 6) + ")");
} else if ((pos = userAgent.indexOf("Safari/")) > -1) {
res = getArray("KHTML", "KHTML(Safari)", "KHTML(Safari"
+ getVersionNumber(userAgent, pos + 6) + ")");
} else if ((pos = userAgent.indexOf("Konqueror/")) > -1) {
res = getArray("KHTML", "KHTML(Konqueror)", "KHTML(Konqueror"
+ getVersionNumber(userAgent, pos + 9) + ")");
} else if ((pos = userAgent.indexOf("KHTML")) > -1) {
res = getArray("KHTML", "KHTML?", "KHTML?("
+ getVersionNumber(userAgent, pos + 5) + ")");
} else if ((pos = userAgent.indexOf("NetFront")) > -1) {
res = getArray("NetFront", "NetFront", "NetFront "
+ getVersionNumber(userAgent, pos + 8));
} else
// <SPAN class="codecomment"> We will interpret Mozilla/4.x as Netscape
// Communicator is and only if x</span>
// <SPAN class="codecomment"> is not 0 or 5</span>
if (userAgent.indexOf("Mozilla/4.") == 0
&& userAgent.indexOf("Mozilla/4.0") < 0
&& userAgent.indexOf("Mozilla/4.5 ") < 0) {
res = getArray("Communicator", "Communicator", "Communicator"
+ getVersionNumber(userAgent, pos + 8));
} else
return getArray("<B>?</B>", "<B>?</B>", "<B>?</B>");
return res;
}
public static boolean isMobileOS(String userAgent) {
if (StringUtils.isEmpty(userAgent)) return false;
String os = getOS(userAgent)[1];
if ("MacOSX-iPhone".equals(os)) {
return true;
} else if ("BlackBerry".equals(os)) {
return true;
} else if ("Android".equals(os)) {
return true;
} else if ("WinCE".equals(os)) {
return true;
}
return false;
}
}
isMobileOS 함수에서 브라우저 User-Agent를 통한 OS를 추출,
이 중 MacOSX-iPhone, BlackBerry, Android, WinCE를 모바일로 처리해 true를 되돌려준다.
