@Override
public int parse(List<String> mergedLines, int index) {
boolean elseReached = false;
int i = index;
for (int ii = mergedLines.size(); i < ii; ++i) {
String line = mergedLines.get(i);
String clearLine;
if (line.startsWith("--")) {
clearLine = ParserUtils.substr(line, "--".length());
} else {
Matcher matcher = ParserUtils.inlineComment.matcher(line);
if (matcher.matches()) {
clearLine = matcher.group(1).trim();
} else {
multiPart.addPart(new LiteralPart(line));
continue;
}
}
if ("end".equalsIgnoreCase(clearLine)) {
newCondition();
return i + 1;
}
if ("else".equalsIgnoreCase(clearLine)) {
newCondition();
lastCondExpr = "true";
elseReached = true;
continue;
}
Matcher matcher = elseIfPattern.matcher(clearLine);
if (matcher.matches()) { // else if
if (elseReached) throw new RuntimeException("syntax error, else if position is illegal");
newCondition();
lastCondExpr = EqlUtils.trimToEmpty(matcher.group(1));
if (EqlUtils.isBlank(lastCondExpr))
throw new RuntimeException("syntax error, no condition in else if");
continue;
}
PartParser partParser = PartParserFactory.tryParse(clearLine);
if (partParser != null) {
i = partParser.parse(mergedLines, i + 1) - 1;
multiPart.addPart(partParser.createPart());
}
}
return i;
}
private void newCondition() {
if (Strings.isNullOrEmpty(lastCondExpr) || multiPart.size() == 0) return;
conditions.add(new IfCondition(lastCondExpr, multiPart));
lastCondExpr = null;
multiPart = new MultiPart();
}
/**
* Parse, if necessary, the multipart stream.
*
* @throws IOException
* @throws ServletException
*/
protected void parse() throws IOException, ServletException {
// have we already parsed the input?
if (_parts != null) return;
// initialize
long total =
0; // keep running total of size of bytes read from input and throw an exception if exceeds
// MultipartConfigElement._maxRequestSize
_parts = new MultiMap();
// if its not a multipart request, don't parse it
if (_contentType == null || !_contentType.startsWith("multipart/form-data")) return;
// sort out the location to which to write the files
if (_config.getLocation() == null) _tmpDir = _contextTmpDir;
else if ("".equals(_config.getLocation())) _tmpDir = _contextTmpDir;
else {
File f = new File(_config.getLocation());
if (f.isAbsolute()) _tmpDir = f;
else _tmpDir = new File(_contextTmpDir, _config.getLocation());
}
if (!_tmpDir.exists()) _tmpDir.mkdirs();
String contentTypeBoundary = "";
if (_contentType.indexOf("boundary=") >= 0)
contentTypeBoundary =
QuotedStringTokenizer.unquote(
value(_contentType.substring(_contentType.indexOf("boundary="))).trim());
String boundary = "--" + contentTypeBoundary;
byte[] byteBoundary = (boundary + "--").getBytes(StringUtil.__ISO_8859_1);
// Get first boundary
String line = ((ReadLineInputStream) _in).readLine();
if (line == null) throw new IOException("Missing content for multipart request");
boolean badFormatLogged = false;
line = line.trim();
while (line != null && !line.equals(boundary)) {
if (!badFormatLogged) {
LOG.warn("Badly formatted multipart request");
badFormatLogged = true;
}
line = ((ReadLineInputStream) _in).readLine();
line = (line == null ? line : line.trim());
}
if (line == null) throw new IOException("Missing initial multi part boundary");
// Read each part
boolean lastPart = false;
String contentDisposition = null;
String contentType = null;
String contentTransferEncoding = null;
outer:
while (!lastPart) {
MultiMap headers = new MultiMap();
while (true) {
line = ((ReadLineInputStream) _in).readLine();
// No more input
if (line == null) break outer;
// end of headers:
if ("".equals(line)) break;
total += line.length();
if (_config.getMaxRequestSize() > 0 && total > _config.getMaxRequestSize())
throw new IllegalStateException(
"Request exceeds maxRequestSize (" + _config.getMaxRequestSize() + ")");
// get content-disposition and content-type
int c = line.indexOf(':', 0);
if (c > 0) {
String key = line.substring(0, c).trim().toLowerCase(Locale.ENGLISH);
String value = line.substring(c + 1, line.length()).trim();
headers.put(key, value);
if (key.equalsIgnoreCase("content-disposition")) contentDisposition = value;
if (key.equalsIgnoreCase("content-type")) contentType = value;
if (key.equals("content-transfer-encoding")) contentTransferEncoding = value;
}
}
// Extract content-disposition
boolean form_data = false;
if (contentDisposition == null) {
throw new IOException("Missing content-disposition");
}
QuotedStringTokenizer tok = new QuotedStringTokenizer(contentDisposition, ";", false, true);
String name = null;
String filename = null;
while (tok.hasMoreTokens()) {
String t = tok.nextToken().trim();
String tl = t.toLowerCase(Locale.ENGLISH);
if (t.startsWith("form-data")) form_data = true;
else if (tl.startsWith("name=")) name = value(t);
else if (tl.startsWith("filename=")) filename = filenameValue(t);
}
// Check disposition
if (!form_data) {
continue;
}
// It is valid for reset and submit buttons to have an empty name.
// If no name is supplied, the browser skips sending the info for that field.
// However, if you supply the empty string as the name, the browser sends the
// field, with name as the empty string. So, only continue this loop if we
// have not yet seen a name field.
if (name == null) {
continue;
}
if ("base64".equalsIgnoreCase(contentTransferEncoding)) {
_in = new Base64InputStream(_in);
} else if ("quoted-printable".equalsIgnoreCase(contentTransferEncoding)) {
_in =
new FilterInputStream(_in) {
@Override
public int read() throws IOException {
int c = in.read();
if (c >= 0 && c == '=') {
int hi = in.read();
int lo = in.read();
if (hi < 0 || lo < 0) {
throw new IOException("Unexpected end to quoted-printable byte");
}
char[] chars = new char[] {(char) hi, (char) lo};
c = Integer.parseInt(new String(chars), 16);
}
return c;
}
};
}
// Have a new Part
MultiPart part = new MultiPart(name, filename);
part.setHeaders(headers);
part.setContentType(contentType);
_parts.add(name, part);
part.open();
try {
int state = -2;
int c;
boolean cr = false;
boolean lf = false;
// loop for all lines
while (true) {
int b = 0;
while ((c = (state != -2) ? state : _in.read()) != -1) {
total++;
if (_config.getMaxRequestSize() > 0 && total > _config.getMaxRequestSize())
throw new IllegalStateException(
"Request exceeds maxRequestSize (" + _config.getMaxRequestSize() + ")");
state = -2;
// look for CR and/or LF
if (c == 13 || c == 10) {
if (c == 13) {
_in.mark(1);
int tmp = _in.read();
if (tmp != 10) _in.reset();
else state = tmp;
}
break;
}
// look for boundary
if (b >= 0 && b < byteBoundary.length && c == byteBoundary[b]) b++;
else {
// this is not a boundary
if (cr) part.write(13);
if (lf) part.write(10);
cr = lf = false;
if (b > 0) part.write(byteBoundary, 0, b);
b = -1;
part.write(c);
}
}
// check partial boundary
if ((b > 0 && b < byteBoundary.length - 2) || (b == byteBoundary.length - 1)) {
if (cr) part.write(13);
if (lf) part.write(10);
cr = lf = false;
part.write(byteBoundary, 0, b);
b = -1;
}
// boundary match
if (b > 0 || c == -1) {
if (b == byteBoundary.length) lastPart = true;
if (state == 10) state = -2;
break;
}
// handle CR LF
if (cr) part.write(13);
if (lf) part.write(10);
cr = (c == 13);
lf = (c == 10 || state == 10);
if (state == 10) state = -2;
}
} finally {
part.close();
}
}
if (!lastPart) throw new IOException("Incomplete parts");
}
