* Character encoding is employed as defined by RFC 3986, * see RFC 3986 section 2.1, * while multibyte unicode characters are preserved in encoded parts. *
* *
1 [scheme:]scheme-specific-part[#fragment]
2 [scheme:][//authority]path[?query][#fragment]
3 [scheme:][//[user-info@]host[:port]]path[?query][#fragment]
scheme-specific-part: [//authority]path[?query]
authority: [user-info@]host[:port]
*
* * RFC 3986 section 2.2 Reserved Characters (January 2005) *
! |
* |
' |
( |
) |
; |
: |
@ |
& |
= |
+ |
$ |
, |
/ |
? |
# |
[ |
] |
* RFC 3986 section 2.3 Unreserved Characters (January 2005) *
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
a |
b |
c |
d |
e |
f |
g |
h |
i |
j |
k |
l |
m |
n |
o |
p |
q |
r |
s |
t |
u |
v |
w |
x |
y |
z |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
- |
_ |
. |
~ |
* Other characters in a Uri must be percent encoded. *
* @since 2.2.1 */ public class Uri { private static final String DIGITS = "0123456789ABCDEF"; private static final String ENCODING = "UTF8"; private static final String MSG_ENCODING_NA = "Charset UTF8 not available"; private static final Pattern patternSingleFS = Pattern.compile("/{1}"); /** * RFC 3986 section 2.3 Unreserved Characters (January 2005) ** {@value} + {@code alphanum} *
*/ public static final String UNRESERVED = "_-.~"; // Harmony: _ - ! . ~ ' ( ) * private static final String punct = ",;:$&+="; // Harmony: , ; : $ & + = /** * RFC 3986 section 2.2 Reserved Characters (January 2005) ** {@value} + {@code alphanum} *
*/ public static final String RESERVED = punct + "!*\'()@/?#[]"; // Harmony: , ; : $ & + = ? / [ ] @ public static final String RESERVED_2 = punct + "!*\'()@/?[]"; // Harmony: , ; : $ & + = ? / [ ] @ // Bug 908, issues w/ windows file path char: $ ^ ~ # [ ] // Windows invalid File characters: * ? " < > | /** * Valid charset for RFC 2396 {@code authority}'s {@code user-info}, * additional to legal {@code alphanum} characters. ** {@value} + {@code alphanum} *
*/ public static final String USERINFO_LEGAL = UNRESERVED + punct; // Harmony: someLegal = unreserved + punct -> _ - ! . ~ ' ( ) * , ; : $ & + = /** * Valid charset for RFC 2396 {@code authority}, * additional to legal {@code alphanum} characters. ** {@value} + {@code alphanum} *
*/ public static final String AUTHORITY_LEGAL = "@[]" + USERINFO_LEGAL; /** * Valid charset for RFC 2396 {@code path}, * additional to legal {@code alphanum} characters. ** {@value} + {@code alphanum} *
*/ public static final String PATH_LEGAL = "/!" + UNRESERVED; // no RESERVED chars but '!', to allow JAR Uris; // Harmony: "/@" + unreserved + punct -> / @ _ - ! . ~ \ ' ( ) * , ; : $ & + = /** * Valid charset for RFC 2396 {@code query}, * additional to legal {@code alphanum} characters. ** {@value} + {@code alphanum} *
*/ public static final String QUERY_LEGAL = UNRESERVED + RESERVED_2 + "\\\""; // Harmony: unreserved + reserved + "\\\"" /** * Valid charset for RFC 2396 {@code scheme-specific-part}, * additional to legal {@code alphanum} characters. ** {@value} + {@code alphanum} *
*/ public static final String SSP_LEGAL = QUERY_LEGAL; // Harmony: unreserved + reserved /** * Valid charset for RFC 2396 {@code fragment}, * additional to legal {@code alphanum} characters. ** {@value} + {@code alphanum} *
*/ public static final String FRAG_LEGAL = UNRESERVED + RESERVED; // Harmony: unreserved + reserved /** * Immutable RFC3986 encoded string. */ public static class Encoded implements Comparable* No encoding will be performed, use with care. *
*/ public static Encoded cast(final String encoded) { return new Encoded(encoded); } Encoded(final String encodedString) { this.s = encodedString; } /** * Encodes all characters into their hexadecimal value prepended by '%', except: ** Uses {@link Uri#encode(String, String)} for implementation.. *
* * @param vanilla the string to be encoded * @param legal extended character set, allowed to be preserved in the vanilla string */ public Encoded(final String vanilla, final String legal) { this.s = encode(vanilla, legal); } public boolean isASCII() { return false; } public final String get() { return s; } /** * Decodes the string argument which is assumed to be encoded in the {@code * x-www-form-urlencoded} MIME content type using the UTF-8 encoding scheme. **'%' and two following hex digit characters are converted to the * equivalent byte value. All other characters are passed through * unmodified. *
** e.g. "A%20B%20C %24%25" -> "A B C $%" *
** Uses {@link Uri#decode(String)} for implementation.. *
*/ public final String decode() { return Uri.decode(s); } // // Basic Object / Identity // @Override public final String toString() { return s; } @Override public final int hashCode() { return s.hashCode(); } /** * {@inheritDoc} * * @param o The comparison argument, either a {@link Encoded} or a {@link String} * * @return {@code true} if the given object is equivalent to this instance, * otherwise {@code false}. * * @see #compareTo(Encoded) * @see #equalsIgnoreCase(Encoded) */ @Override public final boolean equals(final Object o) { if (this == o) { return true; } if (o instanceof Encoded) { return s.equals(((Encoded)o).s); } return s.equals(o); } // // CharSequence // @Override public final int length() { return s.length(); } @Override public final char charAt(final int index) { return s.charAt(index); } @Override public final CharSequence subSequence(final int start, final int end) { return s.subSequence(start, end); } @Override public final int compareTo(final Encoded o) { return s.compareTo(o.s); } // // String derived .. // /** See {@link String#concat(String)}. */ public Encoded concat(final Encoded encoded) { return new Encoded(s.concat(encoded.s)); } /** See {@link String#substring(int)}. */ public final String substring(final int start) { return s.substring(start); } /** See {@link String#substring(int, int)}. */ public final String substring(final int start, final int end) { return s.substring(start, end); } /** See {@link String#indexOf(int)}. */ public final int indexOf(final int ch) { return s.indexOf(ch); } /** See {@link String#indexOf(int, int)}. */ public final int indexOf(final int ch, final int fromIndex) { return s.indexOf(ch, fromIndex); } /** See {@link String#indexOf(String)}. */ public final int indexOf(final String str) { return s.indexOf(str); } /** See {@link String#indexOf(String, int)}. */ public final int indexOf(final String str, final int fromIndex) { return s.indexOf(str, fromIndex); } /** See {@link String#lastIndexOf(int)}. */ public final int lastIndexOf(final int ch) { return s.lastIndexOf(ch); } /** See {@link String#lastIndexOf(int, int)}. */ public int lastIndexOf(final int ch, final int fromIndex) { return s.lastIndexOf(ch, fromIndex); } /** See {@link String#lastIndexOf(String)}. */ public int lastIndexOf(final String str) { return s.lastIndexOf(str); } /** See {@link String#lastIndexOf(String, int)}. */ public int lastIndexOf(final String str, final int fromIndex) { return s.lastIndexOf(str, fromIndex); } /** See {@link String#equalsIgnoreCase(String)}. */ public final boolean equalsIgnoreCase(final Encoded anotherEncoded) { return s.equalsIgnoreCase(anotherEncoded.s); } } public static class ASCIIEncoded extends Encoded { /** * Casts the given encoded String by creating a new ASCIIEncoded instance. ** No encoding will be performed, use with care. *
*/ public static ASCIIEncoded cast(final String encoded) { return new ASCIIEncoded(encoded, null); } private ASCIIEncoded(final String encoded, final Object unused) { super(encoded); } /** * Other characters, which are Unicode chars that are not US-ASCII, and are * not ISO Control or are not ISO Space chars are not preserved * and encoded into their hexidecimal value prepended by '%'. ** For example: Euro currency symbol -> "%E2%82%AC". *
** Uses {@link Uri#encodeToASCIIString(String)} for implementation. *
* @param unicode unencoded input */ public ASCIIEncoded(final String unicode) { super(encodeToASCIIString(unicode)); } public boolean isASCII() { return true; } } private static void encodeChar2UTF8(final StringBuilder buf, final char ch) { final byte[] bytes; try { bytes = new String(new char[] { ch }).getBytes(ENCODING); } catch (final UnsupportedEncodingException e) { throw new RuntimeException(MSG_ENCODING_NA, e); } // FIXME: UTF-8 produces more than one byte ? Optimization might be possible. for (int j = 0; j < bytes.length; j++) { final byte b = bytes[j]; buf.append('%'); buf.append(DIGITS.charAt( ( b & 0xf0 ) >> 4 )); buf.append(DIGITS.charAt( b & 0xf )); } } /** * All characters are encoded into their hexadecimal value prepended by '%', except: ** Use {@link #encodeToASCIIString(String)} for US-ASCII encoding. *
** Consider using {@link Encoded#Encoded(String, String)} in APIs * to distinguish encoded from unencoded data by type. *
* * @param vanilla the string to be encoded * @param legal extended character set, allowed to be preserved in the vanilla string * @return java.lang.String the converted string */ public static String encode(final String vanilla, final String legal) { if( null == vanilla ) { return null; } final StringBuilder buf = new StringBuilder(); for (int i = 0; i < vanilla.length(); i++) { final char ch = vanilla.charAt(i); if ( (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9') || legal.indexOf(ch) > -1 || ( ch > 127 && !Character.isSpaceChar(ch) && !Character.isISOControl(ch) ) ) { buf.append(ch); } else { encodeChar2UTF8(buf, ch); } } return buf.toString(); } /** * Other characters, which are Unicode chars that are not US-ASCII, and are * not ISO Control or are not ISO Space chars are not preserved * and encoded into their hexidecimal value prepended by '%'. ** For example: Euro currency symbol -> "%E2%82%AC". *
** Consider using {@link ASCIIEncoded#ASCIIEncoded(String)} in APIs * to distinguish encoded from unencoded data by type. *
* @param unicode string to be converted * @return java.lang.String the converted string */ public static String encodeToASCIIString(final String unicode) { final StringBuilder buf = new StringBuilder(); for (int i = 0; i < unicode.length(); i++) { final char ch = unicode.charAt(i); if (ch <= 127) { buf.append(ch); } else { encodeChar2UTF8(buf, ch); } } return buf.toString(); } /** * Safe {@link Encoded#decode()} call on optional {@code encoded} instance. * @param encoded {@link Encoded} instance to be decoded, may be {@code null}. * @return the {@link Encoded#decode() decoded} String or {@code null} if {@code encoded} was {@code null}. */ public static String decode(final Encoded encoded) { return null != encoded ? encoded.decode() : null; } /** * Decodes the string argument which is assumed to be encoded in the {@code * x-www-form-urlencoded} MIME content type using the UTF-8 encoding scheme. **'%' and two following hex digit characters are converted to the * equivalent byte value. All other characters are passed through * unmodified. *
** e.g. "A%20B%20C %24%25" -> "A B C $%" *
* * @param encoded The encoded string. * @return java.lang.String The decoded version. */ public static String decode(final String encoded) { if( null == encoded ) { return null; } final StringBuilder result = new StringBuilder(); final byte[] buf = new byte[32]; int bufI = 0; for (int i = 0; i < encoded.length();) { final char c = encoded.charAt(i); if (c == '%') { bufI = 0; do { if (i + 2 >= encoded.length()) { throw new IllegalArgumentException("missing '%' hex-digits at index "+i); } final int d1 = Character.digit(encoded.charAt(i + 1), 16); final int d2 = Character.digit(encoded.charAt(i + 2), 16); if (d1 == -1 || d2 == -1) { throw new IllegalArgumentException("invalid hex-digits at index "+i+": "+encoded.substring(i, i + 3)); } buf[bufI++] = (byte) ((d1 << 4) + d2); if( 32 == bufI ) { appendUTF8(result, buf, bufI); bufI = 0; } i += 3; } while (i < encoded.length() && encoded.charAt(i) == '%'); if( 0 < bufI ) { appendUTF8(result, buf, bufI); } } else { result.append(c); i++; } } return result.toString(); } private static void appendUTF8(final StringBuilder sb, final byte[] buf, final int count) { try { sb.append(new String(buf, 0, count, ENCODING)); } catch (final UnsupportedEncodingException e) { throw new RuntimeException(MSG_ENCODING_NA, e); } } /** * Creates a new Uri instance using the given arguments. ** This constructor first creates a temporary Uri string from the given components. This * string will be parsed later on to create the Uri instance. *
** {@code [scheme:]scheme-specific-part[#fragment]} *
* * @param scheme the unencoded scheme part of the Uri. * @param ssp the unencoded scheme-specific-part of the Uri. * @param fragment the unencoded fragment part of the Uri. * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri create(final String scheme, final String ssp, final String fragment) throws URISyntaxException { if ( emptyString(scheme) && emptyString(ssp) && emptyString(fragment) ) { throw new URISyntaxException("", "all empty parts"); } final StringBuilder uri = new StringBuilder(); if ( !emptyString(scheme) ) { uri.append(scheme); uri.append(IOUtil.SCHEME_SEPARATOR); } if ( !emptyString(ssp) ) { // QUOTE ILLEGAL CHARACTERS uri.append(encode(ssp, SSP_LEGAL)); } if ( !emptyString(fragment) ) { uri.append(IOUtil.FRAGMENT_SEPARATOR); // QUOTE ILLEGAL CHARACTERS uri.append(encode(fragment, FRAG_LEGAL)); } return new Uri(new Encoded(uri.toString()), false); } /** * Creates a new Uri instance using the given arguments. ** This constructor first creates a temporary Uri string from the given components. This * string will be parsed later on to create the Uri instance. *
** {@code [scheme:][user-info@]host[:port][path][?query][#fragment]} *
* * @param scheme the unencoded scheme part of the Uri. * @param userinfo the unencoded user information of the Uri for authentication and authorization. * @param host the unencoded host name of the Uri. * @param port the port number of the Uri. * @param path the unencoded path to the resource on the host. * @param query the unencoded query part of the Uri to specify parameters for the resource. * @param fragment the unencoded fragment part of the Uri. * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri create (final String scheme, final String userinfo, String host, final int port, final String path, final String query, final String fragment) throws URISyntaxException { if ( emptyString(scheme) && emptyString(userinfo) && emptyString(host) && emptyString(path) && emptyString(query) && emptyString(fragment) ) { throw new URISyntaxException("", "all empty parts"); } if ( !emptyString(scheme) && !emptyString(path) && path.length() > 0 && path.charAt(0) != '/') { throw new URISyntaxException(path, "path doesn't start with '/'"); } final StringBuilder uri = new StringBuilder(); if ( !emptyString(scheme) ) { uri.append(scheme); uri.append(IOUtil.SCHEME_SEPARATOR); } if ( !emptyString(userinfo) || !emptyString(host) || port != -1) { uri.append("//"); } if ( !emptyString(userinfo) ) { // QUOTE ILLEGAL CHARACTERS in userinfo uri.append(encode(userinfo, USERINFO_LEGAL)); uri.append('@'); } if ( !emptyString(host) ) { // check for ipv6 addresses that hasn't been enclosed // in square brackets if (host.indexOf(IOUtil.SCHEME_SEPARATOR) != -1 && host.indexOf(']') == -1 && host.indexOf('[') == -1) { host = "[" + host + "]"; } uri.append(host); } if ( port != -1 ) { uri.append(IOUtil.SCHEME_SEPARATOR); uri.append(port); } if ( !emptyString(path) ) { // QUOTE ILLEGAL CHARS uri.append(encode(path, PATH_LEGAL)); } if ( !emptyString(query) ) { uri.append('?'); // QUOTE ILLEGAL CHARS uri.append(encode(query, QUERY_LEGAL)); } if ( !emptyString(fragment) ) { // QUOTE ILLEGAL CHARS uri.append(IOUtil.FRAGMENT_SEPARATOR); uri.append(encode(fragment, FRAG_LEGAL)); } return new Uri(new Encoded(uri.toString()), true); } /** * Creates a new Uri instance using the given arguments. ** This constructor first creates a temporary Uri string from the given components. This * string will be parsed later on to create the Uri instance. *
** {@code [scheme:]host[path][#fragment]} *
* * @param scheme the unencoded scheme part of the Uri. * @param host the unencoded host name of the Uri. * @param path the unencoded path to the resource on the host. * @param fragment the unencoded fragment part of the Uri. * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri create(final String scheme, final String host, final String path, final String fragment) throws URISyntaxException { return create(scheme, null, host, -1, path, null, fragment); } /** * Creates a new Uri instance using the given arguments. ** This constructor first creates a temporary Uri string from the given components. This * string will be parsed later on to create the Uri instance. *
** {@code [scheme:][//authority][path][?query][#fragment]} *
* * @param scheme the unencoded scheme part of the Uri. * @param authority the unencoded authority part of the Uri. * @param path the unencoded path to the resource on the host. * @param query the unencoded query part of the Uri to specify parameters for the resource. * @param fragment the unencoded fragment part of the Uri. * * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri create(final String scheme, final String authority, final String path, final String query, final String fragment) throws URISyntaxException { if ( emptyString(scheme) && emptyString(authority) && emptyString(path) && emptyString(query) && emptyString(fragment) ) { throw new URISyntaxException("", "all empty parts"); } if ( !emptyString(scheme) && !emptyString(path) && path.length() > 0 && path.charAt(0) != '/') { throw new URISyntaxException(path, "path doesn't start with '/'"); } final StringBuilder uri = new StringBuilder(); if ( !emptyString(scheme) ) { uri.append(scheme); uri.append(IOUtil.SCHEME_SEPARATOR); } if ( !emptyString(authority) ) { uri.append("//"); // QUOTE ILLEGAL CHARS uri.append(encode(authority, AUTHORITY_LEGAL)); } if ( !emptyString(path) ) { // QUOTE ILLEGAL CHARS uri.append(encode(path, PATH_LEGAL)); } if ( !emptyString(query) ) { // QUOTE ILLEGAL CHARS uri.append('?'); uri.append(encode(query, QUERY_LEGAL)); } if ( !emptyString(fragment) ) { // QUOTE ILLEGAL CHARS uri.append(IOUtil.FRAGMENT_SEPARATOR); uri.append(encode(fragment, FRAG_LEGAL)); } return new Uri(new Encoded(uri.toString()), false); } /** * Casts the given encoded String to a {@link Encoded#cast(String) new Encoded instance} * used to create the resulting Uri instance via {@link #Uri(Encoded)}. ** No encoding will be performed on the given {@code encodedUri}, use with care. *
* @throws URISyntaxException */ public static Uri cast(final String encodedUri) throws URISyntaxException { return new Uri(Encoded.cast(encodedUri)); } /** * Creates a new Uri instance using the given file-path argument. ** This constructor first creates a temporary Uri string from the given components. This * string will be parsed later on to create the Uri instance. *
** {@code file:path} *
* * @param path the path of the {@code file} {@code schema}. * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri valueOfFilepath(final String path) throws URISyntaxException { if ( emptyString(path) ) { throw new URISyntaxException("", "empty path"); } if ( path.charAt(0) != '/' ) { throw new URISyntaxException(path, "path doesn't start with '/'"); } final StringBuilder uri = new StringBuilder(); uri.append(IOUtil.FILE_SCHEME); uri.append(IOUtil.SCHEME_SEPARATOR); // QUOTE ILLEGAL CHARS uri.append(encode(path, PATH_LEGAL)); return new Uri(new Encoded(uri.toString()), false); } /** * Creates a new Uri instance using the given File instance. ** This constructor first creates a temporary Uri string from the given components. This * string will be parsed later on to create the Uri instance. *
** {@code file:path} *
* * @param file using {@link IOUtil#slashify(String, boolean, boolean) slashified} {@link File#getAbsolutePath() absolute-path} * for the path of the {@code file} {@code schema}, utilizing {@link #valueOfFilepath(String)}. * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri valueOf(final File file) throws URISyntaxException { return Uri.valueOfFilepath(IOUtil.slashify(file.getAbsolutePath(), true, file.isDirectory())); } /** * Creates a new Uri instance using the given URI instance. ** If {@code reencode} is {@code true}, decomposes and decoded parts of the given URI * and reconstruct a new encoded Uri instance, re-encoding will be performed. *
** If {@code reencode} is {@code false}, the encoded {@link URI#toString()} is being used for the new Uri instance, * i.e. no re-encoding will be performed. *
* * @param uri A given URI instance * @param reencode flag whether re-encoding shall be performed * * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri valueOf(final URI uri, final boolean reencode) throws URISyntaxException { if( !reencode) { return new Uri(new Encoded(uri.toString())); } System.err.println("Uri.createByURI(reencode):"); System.err.println(" source: "+uri.toString()); final Uri recomposedUri; if( uri.isOpaque()) { // opaque, without host validation System.err.println(" opaq source: ssp: "+uri.getSchemeSpecificPart()); System.err.println(" opaq source: frg: "+uri.getFragment()); recomposedUri = Uri.create(uri.getScheme(), uri.getSchemeSpecificPart(), uri.getFragment()); } else if( null != uri.getHost() ) { // with host validation System.err.println(" host source: ssp: "+uri.getSchemeSpecificPart()); System.err.println(" host source: frg: "+uri.getFragment()); recomposedUri = Uri.create(uri.getScheme(), uri.getUserInfo(), uri.getHost(), uri.getPort(), uri.getPath(), uri.getQuery(), uri.getFragment()); } else { // without host validation System.err.println(" source: ssp: "+uri.getSchemeSpecificPart()); System.err.println(" source: frg: "+uri.getFragment()); recomposedUri = Uri.create(uri.getScheme(), uri.getAuthority(), uri.getPath(), uri.getQuery(), uri.getFragment()); } System.err.println(" result: "+recomposedUri.toString()); return recomposedUri; } /** * Creates a new Uri instance using the given URL instance. ** No re-encoding will be performed. *
* * @param url A given URL instance * * @throws URISyntaxException * if the temporary created string doesn't fit to the * specification RFC2396 or could not be parsed correctly. */ public static Uri valueOf(final URL url) throws URISyntaxException { return new Uri(new Encoded(url.toString())); } // // All string fields are encoded! // /** Encoded input string used at construction, never {@code null}. */ public final Encoded input; private final Object lazyLock = new Object(); /** Encoded input string used at construction, in US-ASCII encoding. */ private ASCIIEncoded inputASCII; private int hash; /** Plain {@code scheme}, {@code null} if undefined. */ public final String scheme; /** Encoded {@code scheme-specific-part}, never {@code null}. */ public final Encoded schemeSpecificPart; /** Encoded {@code path} part of {@code scheme-specific-part}, never {@code null}. */ public final Encoded path; /** Indicating whether {@code authority} part is defined or not. */ public final boolean hasAuthority; /** Encoded {@code authority} part of {@code scheme-specific-part}, {@code null} if undefined. */ public final Encoded authority; /** Encoded {@code userinfo} part of {@code authority} and {@code scheme-specific-part}, {@code null} if undefined. */ public final Encoded userInfo; // part of authority /** Encoded {@code host} part of {@code authority} and {@code scheme-specific-part}, {@code null} if undefined. */ public final Encoded host; // part of authority /** Encoded {@code port} part of {@code authority} and {@code scheme-specific-part}, {@code -1} if undefined. */ public final int port; // part of authority /** Encoded {@code query} part of {@code scheme-specific-part}, {@code null} if undefined. */ public final Encoded query; /** Encoded {@code fragment}, {@code null} if undefined. */ public final Encoded fragment; /** Indicating whether this Uri is absolute, i.e. has a {@code scheme} and hence an absolute {@code scheme-specific-part}. */ public final boolean absolute; /** * Indicating whether this Uri is opaque, i.e. non-hierarchical {@code scheme-specific-part}. ** An opaque Uri has no {@code scheme-specific-part} being parsed, * i.e. {@code path}, {@code query} and {@code authority} are {@code null}. *
*/ public final boolean opaque; /** * Creates a new Uri instance according to the given encoded string {@code uri}. * * @param uri the RFC3986 encoded RFC2396 Uri representation to be parsed into a Uri object * @throws URISyntaxException * if the given string {@code uri} doesn't fit to the * specification RFC2396 and RFC3986 or could not be parsed correctly. */ public Uri(final Encoded uri) throws URISyntaxException { this(uri, false); } /** Returns true, if this instance is a {@code file} {@code scheme}, otherwise false. */ public final boolean isFileScheme() { return IOUtil.FILE_SCHEME.equals( scheme ); } /** * Returns the encoded {@link #input}, never {@code null}. */ public final Encoded getEncoded() { return input; } /** * Returns the encoded {@link #input} as String, never {@code null}, same as {@link #getEncoded()}. */ @Override public final String toString() { return input.get(); } /** * Returns the encoded {@link #input} encoded in US-ASCII. */ public ASCIIEncoded toASCIIString() { synchronized( lazyLock ) { if( null == inputASCII ) { inputASCII = new ASCIIEncoded(input.get()); } return inputASCII; } } /** * Returns a new {@link URI} instance using the encoded {@link #input} string, {@code new URI(uri.input)}, * i.e. no re-encoding will be performed. * @see #toURI(boolean) */ public final URI toURI() { try { return new URI(input.get()); } catch (final URISyntaxException e) { throw new Error(e); // Can't happen } } /** * Returns a new {@link URI} instance based upon this instance. ** If {@code reencode} is {@code true}, all Uri parts of this instance will be decoded * and encoded by the URI constructor, i.e. re-encoding will be performed. *
** If {@code reencode} is {@code false}, this instance encoded {@link #input} string is being used, see {@link #toURI()}, * i.e. no re-encoding will be performed. *
* * @throws URISyntaxException * if the given string {@code uri} doesn't fit to the * specification RFC2396 or could not be parsed correctly. * @see #valueOf(URI, boolean) */ public final URI toURI(final boolean reencode) throws URISyntaxException { if( !reencode ) { return toURI(); } final URI recomposedURI; if( opaque ) { // opaque, without host validation recomposedURI = new URI(decode(scheme), decode(schemeSpecificPart), decode(fragment)); } else if( null != host ) { // with host validation recomposedURI = new URI(decode(scheme), decode(userInfo), decode(host), port, decode(path), decode(query), decode(fragment)); } else { // without host validation recomposedURI = new URI(decode(scheme), decode(authority), decode(path), decode(query), decode(fragment)); } return recomposedURI; } /** * Returns a new {@link URL} instance using the encoded {@link #input} string, {@code new URL(uri.input)}, * i.e. no re-encoding will be performed. * @throws MalformedURLException * if an error occurs while creating the URL or no protocol * handler could be found. */ public final URL toURL() throws MalformedURLException { if (!absolute) { throw new IllegalArgumentException("Cannot convert relative Uri: "+input); } return new URL(input.get()); } /** * If this instance {@link #isFileScheme() is a file scheme}, * implementation decodes [ "//"+{@link #authority} ] + {@link #path}, == '\\'
* as follows:
* * Otherwise implementation returns {@code null}. *
*/ public final String getNativeFilePath() { if( isFileScheme() ) { final String authorityS; if( null == authority ) { authorityS = ""; } else { authorityS = "//"+authority.decode(); } // return IOUtil.decodeURIToFilePath(authorityS + path); final String path = authorityS+this.path.decode(); if( File.separator.equals("\\") ) { final String r = patternSingleFS.matcher(path).replaceAll("\\\\"); if( r.startsWith("\\") && !r.startsWith("\\\\") ) { // '\\\\' denotes UNC hostname, which shall not be cut-off return r.substring(1); } else { return r; } } return path; } return null; } /** * If this instance's {@link #schemeSpecificPart} contains a Uri itself, a sub-Uri, * return {@link #schemeSpecificPart} + {@code #} {@link #fragment} via it's own new Uri instance. ** In case this Uri is a {@code jar-scheme}, the {@code query} is omitted, * since it shall be invalid for {@code jar-schemes} anyway. *
** Otherwise method returns {@code null}. *
*
* Example 1:
* This instance: jar:scheme2:/some/path/gluegen-rt.jar!/com/jogamp/common/GlueGenVersion.class
* Returned Uri: scheme2:/some/path/gluegen-rt.jar
*
* Example 2:
* This instance: jar:scheme2:/some/path/gluegen-rt.jar!/com/jogamp/common/GlueGenVersion.class?lala=01#fragment
* Returned Uri: scheme2:/some/path/gluegen-rt.jar#fragment
*
* Example 3:
* This instance: scheme1:scheme2:/some/path/gluegen-rt.jar?lala=01#fragment
* Returned Uri: scheme2:/some/path/gluegen-rt.jar?lala=01#fragment
*
* @throws URISyntaxException
*/
public final Uri getContainedUri() throws URISyntaxException {
if( !emptyString(schemeSpecificPart) ) {
final StringBuilder sb = new StringBuilder();
if( scheme.equals(IOUtil.JAR_SCHEME) ) {
final int idx = schemeSpecificPart.lastIndexOf(IOUtil.JAR_SCHEME_SEPARATOR);
if (0 > idx) {
throw new URISyntaxException(input.get(), "missing jar separator");
}
sb.append( schemeSpecificPart.substring(0, idx) ); // exclude '!/'
} else {
sb.append( schemeSpecificPart.get() );
}
if ( !emptyString(fragment) ) {
sb.append(IOUtil.FRAGMENT_SEPARATOR);
sb.append(fragment);
}
try {
final Uri res = new Uri(new Encoded(sb.toString()), false);
if( null != res.scheme ) {
return res;
}
} catch(final URISyntaxException e) {
// OK, does not contain uri
}
}
return null;
}
/**
* Return a new Uri instance representing the parent path of this Uri,
* while cutting of optional {@code query} and {@code fragment} parts.
* * Method is {@code jar-file-entry} aware, i.e. will return the parent entry if exists. *
** If this Uri does not contain any path separator, method returns {@code null}. *
*
* Example-1:
* This instance : jar:http://some/path/gluegen-rt.jar!/com/jogamp/common/GlueGenVersion.class
* Returned Uri #1: jar:http://some/path/gluegen-rt.jar!/com/jogamp/common/
* Returned Uri #2: jar:http://some/path/gluegen-rt.jar!/com/jogamp/
*
* Example-2:
* This instance : http://some/path/gluegen-rt.jar
* Returned Uri #1: http://some/path/
* Returned Uri #2: http://some/
*
*/
public final Uri getParent() {
final int pl = null!=schemeSpecificPart? schemeSpecificPart.length() : 0;
if(pl != 0) {
final int e = schemeSpecificPart.lastIndexOf("/");
if( e > 0 ) { // 0 == e: no path
if( e < pl - 1 ) {
// path is file or has a query
try {
return new Uri(new Encoded( scheme+IOUtil.SCHEME_SEPARATOR+schemeSpecificPart.substring(0, e+1) ));
} catch (final URISyntaxException ue) {
// not complete, hence removed authority, or even root folder -> return null
}
}
// path is a directory ..
final int p = schemeSpecificPart.lastIndexOf("/", e-1);
if( p > 0 ) {
try {
return new Uri(new Encoded( scheme+IOUtil.SCHEME_SEPARATOR+schemeSpecificPart.substring(0, p+1) ));
} catch (final URISyntaxException ue) {
// not complete, hence removed authority, or even root folder -> return null
}
}
}
}
return null;
}
/// NEW START
/**
* The URI's protocol:/some/path/gluegen-rt.jar
* parent dirname URI protocol:/some/path/ will be returned,
* or {@code null} if not applicable.
* * protocol may be "file", "http", etc.. *
* * @return "protocol:/some/path/" * @throws IllegalArgumentException if the URI doesn't match the expected formatting, or is null * @throws URISyntaxException */ public Uri getDirectory() throws URISyntaxException { final String uriS = input.get(); // from // file:/some/path/gluegen-rt.jar _or_ rsrc:gluegen-rt.jar // to // file:/some/path/ _or_ rsrc: int idx = uriS.lastIndexOf('/'); if(0 > idx) { // no abs-path, check for protocol terminator ':' idx = uriS.lastIndexOf(':'); if(0 > idx) { throw new URISyntaxException(input.get(), "no scheme terminator ':'"); } } try { return Uri.cast(uriS.substring(0, idx+1)); // exclude jar name, include terminal '/' or ':' } catch (final URISyntaxException ue) {} return null; } /** * Generates a URI for the relativePath relative to the baseURI, * hence the result is a absolute location. ** Impl. operates on the scheme-specific-part, and hence is sub-protocol savvy. *
** In case baseURI is not a path ending w/ '/', it's a assumed to be a file and it's parent is being used. *
* * @param baseURI denotes a URI to a directory ending w/ '/', or a file. In the latter case the file's directory is being used. * @param relativePath denotes a relative file to the baseLocation's parent directory (URI encoded) * @throws URISyntaxException if path is empty or has no parent directory available while resolving../
*/
public Uri getRelativeOf(final Encoded relativePath) throws URISyntaxException {
return compose(scheme, schemeSpecificPart, relativePath, fragment);
}
static Uri compose(final String scheme, final Encoded schemeSpecificPart, final Encoded relativePath, final Encoded fragment) throws URISyntaxException {
String schemeSpecificPartS = schemeSpecificPart.get();
// cut off optional query in scheme-specific-part
final String query;
final int queryI = schemeSpecificPartS.lastIndexOf('?');
if( queryI >= 0 ) {
query = schemeSpecificPartS.substring(queryI+1);
schemeSpecificPartS = schemeSpecificPartS.substring(0, queryI);
} else {
query = null;
}
if( null != relativePath ) {
if( !schemeSpecificPartS.endsWith("/") ) {
schemeSpecificPartS = IOUtil.getParentOf(schemeSpecificPartS);
}
schemeSpecificPartS = schemeSpecificPartS + relativePath.get();
}
schemeSpecificPartS = IOUtil.cleanPathString( schemeSpecificPartS );
final StringBuilder uri = new StringBuilder();
uri.append(scheme);
uri.append(':');
uri.append(schemeSpecificPartS);
if ( null != query ) {
uri.append('?');
uri.append(query);
}
if ( null != fragment ) {
uri.append('#');
uri.append(fragment.get());
}
return Uri.cast(uri.toString());
}
/// NEW END
/**
* {@inheritDoc}
* * Compares this Uri instance with the given argument {@code o} and * determines if both are equal. Two Uri instances are equal if all single * parts are identical in their meaning. *
* * @param o * the Uri this instance has to be compared with. * @return {@code true} if both Uri instances point to the same resource, * {@code false} otherwise. */ @Override public final boolean equals(final Object o) { if (!(o instanceof Uri)) { return false; } final Uri uri = (Uri) o; if (uri.fragment == null && fragment != null || uri.fragment != null && fragment == null) { return false; } else if (uri.fragment != null && fragment != null) { if (!equalsHexCaseInsensitive(uri.fragment, fragment)) { return false; } } if (uri.scheme == null && scheme != null || uri.scheme != null && scheme == null) { return false; } else if (uri.scheme != null && scheme != null) { if (!uri.scheme.equalsIgnoreCase(scheme)) { return false; } } if (uri.opaque && opaque) { return equalsHexCaseInsensitive(uri.schemeSpecificPart, schemeSpecificPart); } else if (!uri.opaque && !opaque) { if (!equalsHexCaseInsensitive(path, uri.path)) { return false; } if (uri.query != null && query == null || uri.query == null && query != null) { return false; } else if (uri.query != null && query != null) { if (!equalsHexCaseInsensitive(uri.query, query)) { return false; } } if (uri.authority != null && authority == null || uri.authority == null && authority != null) { return false; } else if (uri.authority != null && authority != null) { if (uri.host != null && host == null || uri.host == null && host != null) { return false; } else if (uri.host == null && host == null) { // both are registry based, so compare the whole authority return equalsHexCaseInsensitive(uri.authority, authority); } else { // uri.host != null && host != null, so server-based if (!host.equalsIgnoreCase(uri.host)) { return false; } if (port != uri.port) { return false; } if ( uri.userInfo != null && userInfo == null || uri.userInfo == null && userInfo != null ) { return false; } else if (uri.userInfo != null && userInfo != null) { return equalsHexCaseInsensitive(userInfo, uri.userInfo); } else { return true; } } } else { // no authority return true; } } else { // one is opaque, the other hierarchical return false; } } /** * {@inheritDoc} ** Gets the hashcode value of this Uri instance. *
*/ @Override public final int hashCode() { synchronized( lazyLock ) { if (hash == -1) { hash = getHashString().hashCode(); } return hash; } } /* * Takes a string that may contain hex sequences like %F1 or %2b and * converts the hex values following the '%' to lowercase */ private String convertHexToLowerCase(final String s) { if (s.indexOf('%') == -1) { return s; } final StringBuilder result = new StringBuilder(""); int index = 0, previndex = 0; while ((index = s.indexOf('%', previndex)) != -1) { result.append(s.substring(previndex, index + 1)); result.append(s.substring(index + 1, index + 3).toLowerCase()); index += 3; previndex = index; } return result.toString(); } /* * Takes two strings that may contain hex sequences like %F1 or %2b and * compares them, ignoring case for the hex values. Hex values must always * occur in pairs as above */ private boolean equalsHexCaseInsensitive(final Encoded first, final Encoded second) { if (first.indexOf('%') != second.indexOf('%')) { return first.equals(second); } int index = 0, previndex = 0; while ( ( index = first.indexOf('%', previndex) ) != -1 && second.indexOf('%', previndex) == index ) { if( !first.substring(previndex, index).equals( second.substring(previndex, index) ) ) { return false; } if( !first.substring(index + 1, index + 3).equalsIgnoreCase( second.substring(index + 1, index + 3) ) ) { return false; } index += 3; previndex = index; } return first.substring(previndex).equals( second.substring(previndex) ); } /* * Form a string from the components of this Uri, similarly to the * toString() method. But this method converts scheme and host to lowercase, * and converts escaped octets to lowercase. */ private String getHashString() { final StringBuilder result = new StringBuilder(); if (scheme != null) { result.append(scheme.toLowerCase()); result.append(IOUtil.SCHEME_SEPARATOR); } if (opaque) { result.append(schemeSpecificPart.get()); } else { if (authority != null) { result.append("//"); if (host == null) { result.append(authority.get()); } else { if (userInfo != null) { result.append(userInfo.get() + "@"); //$NON-NLS-1$ } result.append(host.get().toLowerCase()); if (port != -1) { result.append(IOUtil.SCHEME_SEPARATOR + port); } } } if (path != null) { result.append(path.get()); } if (query != null) { result.append('?'); result.append(query.get()); } } if (fragment != null) { result.append(IOUtil.FRAGMENT_SEPARATOR); result.append(fragment.get()); } return convertHexToLowerCase(result.toString()); } /** * * @param input * @param expectServer * @throws URISyntaxException */ private Uri(final Encoded input, final boolean expectServer) throws URISyntaxException { if( emptyString(input) ) { throw new URISyntaxException(input.get(), "empty input"); } this.input = input; String temp = input.get(); int index; // parse into Fragment, Scheme, and SchemeSpecificPart // then parse SchemeSpecificPart if necessary // Fragment index = temp.indexOf(IOUtil.FRAGMENT_SEPARATOR); if (index != -1) { // remove the fragment from the end fragment = new Encoded( temp.substring(index + 1) ); validateFragment(input, fragment, index + 1); temp = temp.substring(0, index); } else { fragment = null; } // Scheme and SchemeSpecificPart final int indexSchemeSep = temp.indexOf(IOUtil.SCHEME_SEPARATOR); index = indexSchemeSep; final int indexSSP = temp.indexOf('/'); final int indexQuerySep = temp.indexOf('?'); final String schemeSpecificPartS; // if a '/' or '?' occurs before the first ':' the uri has no // specified scheme, and is therefore not absolute if ( indexSchemeSep != -1 && ( indexSSP >= indexSchemeSep || indexSSP == -1 ) && ( indexQuerySep >= indexSchemeSep || indexQuerySep == -1 ) ) { // the characters up to the first ':' comprise the scheme absolute = true; scheme = temp.substring(0, indexSchemeSep); if (scheme.length() == 0) { failExpecting(input, "scheme", indexSchemeSep); } validateScheme(input, scheme, 0); schemeSpecificPartS = temp.substring(indexSchemeSep + 1); schemeSpecificPart = new Encoded( schemeSpecificPartS ); if (schemeSpecificPart.length() == 0) { failExpecting(input, "scheme-specific-part", indexSchemeSep); } } else { absolute = false; scheme = null; schemeSpecificPartS = temp; schemeSpecificPart = new Encoded( schemeSpecificPartS ); } if ( scheme == null || schemeSpecificPartS.length() > 0 && schemeSpecificPartS.charAt(0) == '/' ) { // Uri is hierarchical, not opaque opaque = false; // Query temp = schemeSpecificPartS; index = temp.indexOf('?'); if (index != -1) { query = new Encoded( temp.substring(index + 1) ); temp = temp.substring(0, index); validateQuery(input, query, indexSSP + 1 + index); } else { query = null; } // Authority and Path if (temp.startsWith("//")) { index = temp.indexOf('/', 2); final String authorityS; if (index != -1) { authorityS = temp.substring(2, index); path = new Encoded( temp.substring(index) ); } else { authorityS = temp.substring(2); if (authorityS.length() == 0 && query == null && fragment == null) { failExpecting(input, "authority, path [, query, fragment]", index); } path = Encoded.EMPTY; // nothing left, so path is empty // (not null, path should never be null if hierarchical/non-opaque) } if ( emptyString(authorityS) ) { authority = null; } else { authority = new Encoded( authorityS ); validateAuthority(input, authority, indexSchemeSep + 3); } } else { // no authority specified path = new Encoded( temp ); authority = null; } int pathIndex = 0; if (indexSSP > -1) { pathIndex += indexSSP; } if (index > -1) { pathIndex += index; } validatePath(input, path, pathIndex); } else { // Uri is not hierarchical, Uri is opaque opaque = true; query = null; path = null; authority = null; validateSsp(input, schemeSpecificPart, indexSchemeSep + 1); } /** * determine the host, port and userinfo if the authority parses * successfully to a server based authority * * Behavior in error cases: if forceServer is true, throw * URISyntaxException with the proper diagnostic messages. if * forceServer is false assume this is a registry based uri, and just * return leaving the host, port and userinfo fields undefined. * * and there are some error cases where URISyntaxException is thrown * regardless of the forceServer parameter e.g. malformed ipv6 address */ Encoded tempUserinfo = null, tempHost = null; int tempPort = -1; boolean authorityComplete; if ( null != authority ) { authorityComplete = true; // set to false later int hostindex = 0; temp = authority.get(); index = temp.indexOf('@'); if (index != -1) { // remove user info tempUserinfo = new Encoded( temp.substring(0, index) ); validateUserinfo(authority, tempUserinfo, 0); temp = temp.substring(index + 1); // host[:port] is left hostindex = index + 1; } index = temp.lastIndexOf(IOUtil.SCHEME_SEPARATOR); final int endindex = temp.indexOf(']'); if (index != -1 && endindex < index) { // determine port and host tempHost = new Encoded( temp.substring(0, index) ); if (index < (temp.length() - 1)) { // port part is not empty try { tempPort = Integer.parseInt(temp.substring(index + 1)); if (tempPort < 0) { if (expectServer) { fail(authority, "invalid port <"+authority+">", hostindex + index + 1); } authorityComplete = false; } } catch (final NumberFormatException e) { if (expectServer) { fail(authority, "invalid port <"+authority+">, "+e.getMessage(), hostindex + index + 1); } authorityComplete = false; } } } else { tempHost = new Encoded( temp ); } if( authorityComplete ) { if ( emptyString(tempHost) ) { if (expectServer) { fail(authority, "empty host <"+authority+">", hostindex); } authorityComplete = false; } else if (!isValidHost(expectServer, tempHost)) { if (expectServer) { fail(authority, "invalid host <"+tempHost+">", hostindex); } authorityComplete = false; } } } else { authorityComplete = false; } if( authorityComplete ) { // this is a server based uri, // fill in the userinfo, host and port fields userInfo = tempUserinfo; host = tempHost; port = tempPort; hasAuthority = true; } else { userInfo = null; host = null; port = -1; hasAuthority = false; } } private static void validateScheme(final Encoded uri, final String scheme, final int index) throws URISyntaxException { // first char needs to be an alpha char final char ch = scheme.charAt(0); if ( !((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')) ) { fail(uri, "invalid scheme", index); } final int errIdx = validateAlphaNum(scheme, "+-."); if( 0 <= errIdx ) { fail(uri, "invalid scheme", index+errIdx); } } private static void validateSsp(final Encoded uri, final Encoded ssp, final int index) throws URISyntaxException { final int errIdx = validateEncoded(ssp, SSP_LEGAL); if( 0 <= errIdx ) { fail(uri, "invalid scheme-specific-part", index+errIdx); } } private static void validateAuthority(final Encoded uri, final Encoded authority, final int index) throws URISyntaxException { final int errIdx = validateEncoded(authority, AUTHORITY_LEGAL); if( 0 <= errIdx ) { fail(uri, "invalid authority", index+errIdx); } } private static void validatePath(final Encoded uri, final Encoded path, final int index) throws URISyntaxException { final int errIdx = validateEncoded(path, PATH_LEGAL); if( 0 <= errIdx ) { fail(uri, "invalid path", index+errIdx); } } private static void validateQuery(final Encoded uri, final Encoded query, final int index) throws URISyntaxException { final int errIdx = validateEncoded(query, QUERY_LEGAL); if( 0 <= errIdx ) { fail(uri, "invalid query", index+errIdx); } } private static void validateFragment(final Encoded uri, final Encoded fragment, final int index) throws URISyntaxException { final int errIdx = validateEncoded(fragment, FRAG_LEGAL); if( 0 <= errIdx ) { fail(uri, "invalid fragment", index+errIdx); } } private static void validateUserinfo(final Encoded uri, final Encoded userinfo, final int index) throws URISyntaxException { for (int i = 0; i < userinfo.length(); i++) { final char ch = userinfo.charAt(i); if (ch == ']' || ch == '[') { fail(uri, "invalid userinfo", index+i); } } } /** * distinguish between IPv4, IPv6, domain name and validate it based on * its type */ private boolean isValidHost(final boolean expectServer, final Encoded host) throws URISyntaxException { if (host.charAt(0) == '[') { // ipv6 address if (host.charAt(host.length() - 1) != ']') { fail(input, "invalid host, missing closing ipv6: "+host, 0); } if (!isValidIP6Address(host.get())) { fail(input, "invalid ipv6: "+host, 0); } return true; } // '[' and ']' can only be the first char and last char // of the host name if (host.indexOf('[') != -1 || host.indexOf(']') != -1) { fail(input, "invalid host: "+host, 0); } final int index = host.lastIndexOf('.'); if ( index < 0 || index == host.length() - 1 || !Character.isDigit(host.charAt(index + 1)) ) { // domain name if (isValidDomainName(host)) { return true; } if (expectServer) { fail(input, "invalid host, invalid domain-name or ipv4: "+host, 0); } return false; } // IPv4 address if (isValidIPv4Address(host.get())) { return true; } if (expectServer) { fail(input, "invalid host, invalid ipv4: "+host, 0); } return false; } private static boolean isValidDomainName(final Encoded host) { final String hostS = host.get(); if( 0 <= validateAlphaNum(hostS, "-.") ) { return false; } String label = null; final StringTokenizer st = new StringTokenizer(hostS, "."); //$NON-NLS-1$ while (st.hasMoreTokens()) { label = st.nextToken(); if (label.startsWith("-") || label.endsWith("-")) { //$NON-NLS-1$ //$NON-NLS-2$ return false; } } if (!label.equals(hostS)) { final char ch = label.charAt(0); if (ch >= '0' && ch <= '9') { return false; } } return true; } private static boolean isValidIPv4Address(final String ipv4Address) { int index; int index2; try { int num; index = ipv4Address.indexOf('.'); num = Integer.parseInt(ipv4Address.substring(0, index)); if (num < 0 || num > 255) { return false; } index2 = ipv4Address.indexOf('.', index + 1); num = Integer.parseInt(ipv4Address.substring(index + 1, index2)); if (num < 0 || num > 255) { return false; } index = ipv4Address.indexOf('.', index2 + 1); num = Integer.parseInt(ipv4Address.substring(index2 + 1, index)); if (num < 0 || num > 255) { return false; } num = Integer.parseInt(ipv4Address.substring(index + 1)); if (num < 0 || num > 255) { return false; } } catch (final Exception e) { return false; } return true; } private static boolean isValidIP6Address(final String ipv6Address) { final int length = ipv6Address.length(); boolean doubleColon = false; int numberOfColons = 0; int numberOfPeriods = 0; String word = ""; //$NON-NLS-1$ char c = 0; char prevChar = 0; int offset = 0; // offset for [] ip addresses if (length < 2) { return false; } for (int i = 0; i < length; i++) { prevChar = c; c = ipv6Address.charAt(i); switch (c) { // case for an open bracket [x:x:x:...x] case '[': if (i != 0) { return false; // must be first character } if (ipv6Address.charAt(length - 1) != ']') { return false; // must have a close ] } if ((ipv6Address.charAt(1) == IOUtil.SCHEME_SEPARATOR_CHAR) && (ipv6Address.charAt(2) != IOUtil.SCHEME_SEPARATOR_CHAR)) { return false; } offset = 1; if (length < 4) { return false; } break; // case for a closed bracket at end of IP [x:x:x:...x] case ']': if (i != length - 1) { return false; // must be last character } if (ipv6Address.charAt(0) != '[') { return false; // must have a open [ } break; // case for the last 32-bits represented as IPv4 // x:x:x:x:x:x:d.d.d.d case '.': numberOfPeriods++; if (numberOfPeriods > 3) { return false; } if (!isValidIP4Word(word)) { return false; } if (numberOfColons != 6 && !doubleColon) { return false; } // a special case ::1:2:3:4:5:d.d.d.d allows 7 colons // with // an IPv4 ending, otherwise 7 :'s is bad if (numberOfColons == 7 && ipv6Address.charAt(0 + offset) != IOUtil.SCHEME_SEPARATOR_CHAR && ipv6Address.charAt(1 + offset) != IOUtil.SCHEME_SEPARATOR_CHAR) { return false; } word = ""; //$NON-NLS-1$ break; case IOUtil.SCHEME_SEPARATOR_CHAR: numberOfColons++; if (numberOfColons > 7) { return false; } if (numberOfPeriods > 0) { return false; } if (prevChar == IOUtil.SCHEME_SEPARATOR_CHAR) { if (doubleColon) { return false; } doubleColon = true; } word = ""; //$NON-NLS-1$ break; default: if (word.length() > 3) { return false; } if (!isValidHexChar(c)) { return false; } word += c; } } // Check if we have an IPv4 ending if (numberOfPeriods > 0) { if (numberOfPeriods != 3 || !isValidIP4Word(word)) { return false; } } else { // If we're at then end and we haven't had 7 colons then there // is a problem unless we encountered a doubleColon if (numberOfColons != 7 && !doubleColon) { return false; } // If we have an empty word at the end, it means we ended in // either a : or a . // If we did not end in :: then this is invalid if (word == "" && ipv6Address.charAt(length - 1 - offset) != IOUtil.SCHEME_SEPARATOR_CHAR //$NON-NLS-1$ && ipv6Address.charAt(length - 2 - offset) != IOUtil.SCHEME_SEPARATOR_CHAR) { return false; } } return true; } private static boolean isValidIP4Word(final String word) { char c; if (word.length() < 1 || word.length() > 3) { return false; } for (int i = 0; i < word.length(); i++) { c = word.charAt(i); if (!(c >= '0' && c <= '9')) { return false; } } if (Integer.parseInt(word) > 255) { return false; } return true; } /** * Validate a string by checking if it contains any characters other than: *