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Remove reflection from ContentDispositionTests

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Also minor refactoring in decoding in order to tolerate the absence of
a charset and treat as US_ASCII.

See gh-23485
This commit is contained in:
Rossen Stoyanchev
2019-09-03 12:30:31 +01:00
parent c97580035e
commit d927d31e13
2 changed files with 62 additions and 83 deletions
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41
spring-web/src/main/java/org/springframework/http/ContentDisposition.java
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@@ -208,7 +208,7 @@ public final class ContentDisposition {
}
else {
sb.append("; filename*=");
sb.append(encodeHeaderFieldParam(this.filename, this.charset));
sb.append(encodeFilename(this.filename, this.charset));
}
}
if (this.size != null) {
@@ -274,15 +274,23 @@ public final class ContentDisposition {
String attribute = part.substring(0, eqIndex);
String value = (part.startsWith("\"", eqIndex + 1) && part.endsWith("\"") ?
part.substring(eqIndex + 2, part.length() - 1) :
part.substring(eqIndex + 1, part.length()));
part.substring(eqIndex + 1));
if (attribute.equals("name") ) {
name = value;
}
else if (attribute.equals("filename*") ) {
filename = decodeHeaderFieldParam(value);
charset = Charset.forName(value.substring(0, value.indexOf('\'')));
Assert.isTrue(UTF_8.equals(charset) || ISO_8859_1.equals(charset),
"Charset should be UTF-8 or ISO-8859-1");
int idx1 = value.indexOf('\'');
int idx2 = value.indexOf('\'', idx1 + 1);
if (idx1 != -1 && idx2 != -1) {
charset = Charset.forName(value.substring(0, idx1));
Assert.isTrue(UTF_8.equals(charset) || ISO_8859_1.equals(charset),
"Charset should be UTF-8 or ISO-8859-1");
filename = decodeFilename(value.substring(idx2 + 1), charset);
}
else {
// US ASCII
filename = decodeFilename(value, StandardCharsets.US_ASCII);
}
}
else if (attribute.equals("filename") && (filename == null)) {
filename = value;
@@ -362,22 +370,15 @@ public final class ContentDisposition {
/**
* Decode the given header field param as described in RFC 5987.
* <p>Only the US-ASCII, UTF-8 and ISO-8859-1 charsets are supported.
* @param input the header field param
* @param filename the filename
* @param charset the charset for the filename
* @return the encoded header field param
* @see <a href="https://tools.ietf.org/html/rfc5987">RFC 5987</a>
*/
private static String decodeHeaderFieldParam(String input) {
Assert.notNull(input, "Input String should not be null");
int firstQuoteIndex = input.indexOf('\'');
int secondQuoteIndex = input.indexOf('\'', firstQuoteIndex + 1);
// US_ASCII
if (firstQuoteIndex == -1 || secondQuoteIndex == -1) {
return input;
}
Charset charset = Charset.forName(input.substring(0, firstQuoteIndex));
Assert.isTrue(UTF_8.equals(charset) || ISO_8859_1.equals(charset),
"Charset should be UTF-8 or ISO-8859-1");
byte[] value = input.substring(secondQuoteIndex + 1, input.length()).getBytes(charset);
private static String decodeFilename(String filename, Charset charset) {
Assert.notNull(filename, "'input' String` should not be null");
Assert.notNull(charset, "'charset' should not be null");
byte[] value = filename.getBytes(charset);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int index = 0;
while (index < value.length) {
@@ -417,7 +418,7 @@ public final class ContentDisposition {
* @return the encoded header field param
* @see <a href="https://tools.ietf.org/html/rfc5987">RFC 5987</a>
*/
private static String encodeHeaderFieldParam(String input, Charset charset) {
private static String encodeFilename(String input, Charset charset) {
Assert.notNull(input, "Input String should not be null");
Assert.notNull(charset, "Charset should not be null");
if (StandardCharsets.US_ASCII.equals(charset)) {