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Code Issues Releases Wiki Activity

Fix renamed attachments and try to get attachment name from Content-Disposition

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git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@69 3d1905a2-6b24-0410-a738-b14d5a86fcbd
This commit is contained in:
mguessan 2007-06-22 07:41:46 +00:00
parent f21298b863
commit d1dadc1eeb
1 changed files with 55 additions and 10 deletions
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65
src/java/davmail/exchange/ExchangeSession.java
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@ -91,6 +91,7 @@ public class ExchangeSession {
public static final String CONTENT_TYPE_HEADER = "content-type: ";
public static final String CONTENT_TRANSFER_ENCODING_HEADER = "content-transfer-encoding: ";
public static final String CONTENT_DISPOSITION_HEADER = "content-disposition: ";
private static final int DEFAULT_KEEP_DELAY = 30;
@ -844,7 +845,7 @@ public class ExchangeSession {
// skip first line
reader.readLine();
MimeHeader mimeHeader = new MimeHeader();
mimeHeader.processHeaders(reader, os);
mimeHeader.processHeaders(reader, os, null);
// non MIME message without attachments, append body
if (mimeHeader.boundary == null) {
os.write('\r');
@ -888,9 +889,15 @@ public class ExchangeSession {
// detect part boundary start
if (line.equals(mimeHeader.boundary)) {
Attachment currentAttachment = attachmentsMap.get(String.valueOf(attachmentIndex));
String currentAttachmentName = null;
if (currentAttachment != null) {
currentAttachmentName = currentAttachment.name;
}
// process current part header
MimeHeader partHeader = new MimeHeader();
partHeader.processHeaders(reader, os);
partHeader.processHeaders(reader, os, currentAttachmentName);
// detect inner mime message
if (partHeader.contentType != null
@ -916,11 +923,15 @@ public class ExchangeSession {
}
// try to get by index if attachment renamed to application
if (attachment == null && partHeader.name != null) {
Attachment currentAttachment = attachmentsMap.get(String.valueOf(attachmentIndex));
if (currentAttachment.name.startsWith("application")) {
if (currentAttachment != null && currentAttachment.name.startsWith("application")) {
attachment = currentAttachment;
}
}
// try to get attachment with Content-Disposition header
if (attachment == null && partHeader.fileName != null) {
attachment = attachmentsMap.get(partHeader.fileName);
}
attachmentIndex++;
if (attachment == null) {
// only warn, could happen depending on IIS config
@ -1392,6 +1403,10 @@ public class ExchangeSession {
public String contentTransferEncoding = null;
public String boundary = null;
public String name = null;
/**
* filename in Content-Disposition header
*/
public String fileName = null;
protected void writeLine(OutputStream os, String line) throws IOException {
if (os != null) {
@ -1401,10 +1416,34 @@ public class ExchangeSession {
}
}
public void processHeaders(BufferedReader reader, OutputStream os) throws IOException {
/**
* Try to restore attachment names renamed by Exchange.
*
* @param line current header line
* @param currentAttachmentName actual attachment name
* @return patched header line
*/
protected String fixRenamedAttachment(String line, String currentAttachmentName) {
String result = line;
final String WINMAIL_DAT = "name=\"winmail.dat\"";
if (line != null && currentAttachmentName != null) {
int startIndex = line.indexOf(WINMAIL_DAT);
if (startIndex >= 0) {
result = line.substring(0, startIndex) +
"name=\"" +
currentAttachmentName +
"\"" +
line.substring(startIndex + WINMAIL_DAT.length());
}
}
return result;
}
public void processHeaders(BufferedReader reader, OutputStream os, String currentAttachmentName) throws IOException {
// TODO implement a reliable header tokenizer
// TODO : do not write header directly in outputstream, allow attachment name fix (winmail.dat)
String line;
line = reader.readLine();
line = fixRenamedAttachment(reader.readLine(), currentAttachmentName);
while (line != null && line.length() > 0) {
writeLine(os, line);
@ -1416,7 +1455,7 @@ public class ExchangeSession {
// handle multi-line header
StringBuffer header = new StringBuffer(contentTypeHeader);
while (line.trim().endsWith(";")) {
line = reader.readLine();
line = fixRenamedAttachment(reader.readLine(), currentAttachmentName);
header.append(line);
writeLine(os, line);
@ -1468,7 +1507,7 @@ public class ExchangeSession {
if (!name.endsWith("\"")) {
// append next lines
do {
line = reader.readLine();
line = fixRenamedAttachment(reader.readLine(), currentAttachmentName);
writeLine(os, line);
name += line;
} while (!line.trim().endsWith("\""));
@ -1488,15 +1527,21 @@ public class ExchangeSession {
}
} else if (lineToCompare.startsWith(CONTENT_TRANSFER_ENCODING_HEADER)) {
contentTransferEncoding = line.substring(CONTENT_TRANSFER_ENCODING_HEADER.length()).trim();
} else if (lineToCompare.startsWith(CONTENT_DISPOSITION_HEADER)) {
// TODO : recode with header parser
int filenameIndex = line.indexOf("filename=\"");
if (filenameIndex >= 0) {
fileName = line.substring(filenameIndex + 10, line.lastIndexOf("\""));
}
}
line = reader.readLine();
line = fixRenamedAttachment(reader.readLine(), currentAttachmentName);
}
writeLine(os, "");
// strip header content for attached messages
if ("message/rfc822".equalsIgnoreCase(contentType)) {
MimeHeader internalMimeHeader = new MimeHeader();
internalMimeHeader.processHeaders(reader, null);
internalMimeHeader.processHeaders(reader, null, null);
if (internalMimeHeader.boundary != null) {
String endBoundary = internalMimeHeader.boundary + "--";
line = reader.readLine();