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davmail
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full inline images rewrite, merge information from htmlBody and OWA generated page to build inline image list

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git-svn-id: http://svn.code.sf.net/p/davmail/code/trunk@14 3d1905a2-6b24-0410-a738-b14d5a86fcbd
master
mguessan 17 years ago
parent 98868aa199
commit f9b1321101
2 changed files with 78 additions and 37 deletions
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108
src/java/davmail/exchange/ExchangeSession.java
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@ -535,7 +535,7 @@ public class ExchangeSession {
public String subject;
public String priority;
protected Map<String, String> attachmentsMap;
protected Map<String, Attachment> attachmentsMap;
// attachment index used during write
protected int attachmentIndex;
@ -628,7 +628,7 @@ public class ExchangeSession {
// exchange message : create mime part headers
if (boundary != null) {
attachmentsMap = getAttachmentsUrls(messageUrl);
attachmentsMap = getAttachments(messageUrl);
// TODO : test actual header values
result.append("\n--").append(boundary)
.append("\nContent-Type: text/html")
@ -642,7 +642,8 @@ public class ExchangeSession {
parsedAttachmentIndex = Integer.parseInt(attachmentName);
} catch (Exception e) {/* ignore */}
if (parsedAttachmentIndex == 0) {
String attachmentContentType = getAttachmentContentType(attachmentsMap.get(attachmentName));
Attachment attachment = attachmentsMap.get(attachmentName);
String attachmentContentType = getAttachmentContentType(attachment.href);
String attachmentContentEncoding = "base64";
if (attachmentContentType.startsWith("text/")) {
attachmentContentEncoding = "quoted-printable";
@ -655,22 +656,12 @@ public class ExchangeSession {
.append(attachmentContentType)
.append(";")
.append("\n\tname=\"").append(attachmentName).append("\"");
int attachmentIdStartIndex = htmlBody.indexOf("cid:" + attachmentName);
if (attachmentIdStartIndex > 0) {
int attachmentIdEndIndex = htmlBody.indexOf('"', attachmentIdStartIndex);
if (attachmentIdEndIndex > 0) {
result.append("\nContent-ID: <")
.append(htmlBody.substring(attachmentIdStartIndex + 4, attachmentIdEndIndex))
.append(">");
}
} else if (htmlBody.indexOf("src=\"1_multipart/" + attachmentName) >= 0) {
// detect html body without cid in image link
if (attachment.contentid != null) {
result.append("\nContent-ID: <")
.append(attachmentName)
.append(attachment.contentid)
.append(">");
}
result.append("\nContent-Transfer-Encoding: ").append(attachmentContentEncoding)
.append("\n\n");
}
@ -708,13 +699,13 @@ public class ExchangeSession {
} else {
attachmentIndex = 0;
attachmentsMap = getAttachmentsUrls(messageUrl);
attachmentsMap = getAttachments(messageUrl);
writeMimeMessage(reader, os, mimeHeader, attachmentsMap);
}
os.flush();
}
public void writeMimeMessage(BufferedReader reader, OutputStream os, MimeHeader mimeHeader, Map<String, String> attachmentsMap) throws IOException {
public void writeMimeMessage(BufferedReader reader, OutputStream os, MimeHeader mimeHeader, Map<String, Attachment> attachmentsMap) throws IOException {
String line;
// with alternative, there are two body forms (plain+html)
if ("multipart/alternative".equals(mimeHeader.contentType)) {
@ -743,10 +734,10 @@ public class ExchangeSession {
attachmentIndex++;
writeBody(os, partHeader);
} else {
String attachmentUrl = attachmentsMap.get(partHeader.name);
String attachmentUrl = attachmentsMap.get(partHeader.name).href;
// try to get attachment by index, only if no name found
if (attachmentUrl == null && partHeader.name == null) {
attachmentUrl = attachmentsMap.get(String.valueOf(attachmentIndex));
attachmentUrl = attachmentsMap.get(String.valueOf(attachmentIndex)).href;
}
if (attachmentUrl == null) {
// only warn, could happen depending on IIS config
@ -982,7 +973,7 @@ public class ExchangeSession {
return xmlDocument;
}
public Map<String, String> getAttachmentsUrls(String messageUrl) throws IOException {
public Map<String, Attachment> getAttachments(String messageUrl) throws IOException {
if (attachmentsMap != null) {
// do not load attachments twice
return attachmentsMap;
@ -999,11 +990,13 @@ public class ExchangeSession {
// Release the connection.
getMethod.releaseConnection();
Map<String, String> attachmentsMap = new HashMap<String, String>();
Map<String, Attachment> attachmentsMap = new HashMap<String, Attachment>();
int attachmentIndex = 2;
// list file attachments identified explicitly
List<Attribute> list = xmlDocument.getNodes("//table[@id='idAttachmentWell']//a/@href");
for (Attribute element : list) {
String attachmentHref = element.getValue();
// exclude empty links (owa buttons)
if (!"#".equals(attachmentHref)) {
final String ATTACH_QUERY = "?attach=1";
if (attachmentHref.endsWith(ATTACH_QUERY)) {
@ -1011,6 +1004,7 @@ public class ExchangeSession {
}
// url is encoded
attachmentHref = URIUtil.decode(attachmentHref);
// exclude external URLs
if (attachmentHref.startsWith(messageUrl)) {
String attachmentName = attachmentHref.substring(messageUrl.length() + 1);
int slashIndex = attachmentName.indexOf('/');
@ -1026,27 +1020,39 @@ public class ExchangeSession {
attachmentName = attachmentName.substring(underscoreIndex + 1);
}
}
// decode slashes
// decode slashes in attachment name
attachmentName = attachmentName.replaceAll("_xF8FF_", "/");
attachmentsMap.put(attachmentName, attachmentHref);
Attachment attachment = new Attachment();
attachment.name = attachmentName;
attachment.href = attachmentHref;
attachmentsMap.put(attachmentName, attachment);
logger.debug("Attachment " + attachmentIndex + " : " + attachmentName);
attachmentsMap.put(String.valueOf(attachmentIndex++), attachmentHref);
// add a second count based map entry
attachmentsMap.put(String.valueOf(attachmentIndex++), attachment);
} else {
logger.warn("Message URL : " + messageUrl + " is not a substring of attachment URL : " + attachmentHref);
}
}
}
// use htmlBody and owa generated body to look for inline images
// get inline images from htmlBody (without OWA transformation)
ByteArrayInputStream bais = new ByteArrayInputStream(htmlBody.getBytes("UTF-8"));
XmlDocument xmlBody = tidyDocument(bais);
List<Attribute> htmlBodyImgList = xmlBody.getNodes("//img/@src");
// use owa generated body to look for inline images
List<Attribute> imgList = xmlDocument.getNodes("//img/@src");
// TODO : add body background, does not work in thunderbird
// htmlBodyImgList.addAll(xmlBody.getNodes("//body/@background"));
// imgList.addAll(xmlDocument.getNodes("//td/@background"));
// get inline images
List<Attribute> imgList = xmlBody.getNodes("//img/@src");
imgList.addAll(xmlDocument.getNodes("//img/@src"));
int inlineImageCount = 0;
for (Attribute element : imgList) {
String attachmentHref = element.getValue();
// filter external images
if (attachmentHref.startsWith("1_multipart")) {
attachmentHref = URIUtil.decode(attachmentHref);
if (attachmentHref.endsWith("?Security=3")) {
@ -1060,13 +1066,32 @@ public class ExchangeSession {
if (attachmentName.startsWith("%31_multipart%3F2_")) {
attachmentName = attachmentName.substring(18);
}
// decode slashes
attachmentName = attachmentName.replaceAll("_xF8FF_", "/");
// exclude inline external images
if (!attachmentHref.startsWith("http://") && !attachmentHref.startsWith("https://")) {
attachmentsMap.put(attachmentName, messageUrl + "/" + attachmentHref);
logger.debug("Inline image attachment " + attachmentIndex + " : " + attachmentName);
attachmentsMap.put(String.valueOf(attachmentIndex++), attachmentHref);
// fix html body
htmlBody = htmlBody.replaceFirst(attachmentHref, "cid:" + attachmentName);
if (!attachmentName.startsWith("http://") && !attachmentName.startsWith("https://")) {
Attachment attachment = new Attachment();
attachment.name = attachmentName;
attachment.href = messageUrl + "/" + attachmentHref;
if (htmlBodyImgList.size() > inlineImageCount) {
String contentid = htmlBodyImgList.get(inlineImageCount++).getValue();
if (contentid.startsWith("cid:")) {
attachment.contentid = contentid.substring("cid:".length());
} else if (!contentid.startsWith("http://") && !contentid.startsWith("https://")) {
attachment.contentid = contentid;
// must patch htmlBody for inline image without cid
htmlBody = htmlBody.replaceFirst(attachment.contentid, "cid:"+attachment.contentid);
}
} else {
logger.warn("More images in OWA body !");
}
// add only inline images
if (attachment.contentid != null) {
attachmentsMap.put(attachmentName, attachment);
}
logger.debug("Inline image attachment ID:" + attachment.contentid
+ " name: " + attachment.name + " href: " + attachment.href);
}
}
}
@ -1078,6 +1103,21 @@ public class ExchangeSession {
}
class Attachment {
/**
* attachment file name
*/
public String name = null;
/**
* Content ID
*/
public String contentid = null;
/**
* Attachment URL
*/
public String href = null;
}
class MimeHeader {
public String contentType = null;

7
src/test/davmail/exchange/TestExchangeSession.java
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@ -8,20 +8,21 @@ import org.apache.commons.httpclient.util.URIUtil;
*/
public class TestExchangeSession {
public static void main(String[] argv) {
Settings.setConfigFilePath(argv[0]);
Settings.load();
ExchangeSession session = new ExchangeSession();
// test auth
try {
session.login(argv[0], argv[1]);
session.login(argv[1], argv[2]);
ExchangeSession.Folder folder = session.selectFolder("tests");
session.selectFolder("tests");
String messageName;
messageName = URIUtil.decode(argv[2]);
messageName = URIUtil.decode(argv[3]);
long startTime = System.currentTimeMillis();
ExchangeSession.Message messageTest = session.getMessage(folder.folderUrl + "/"+messageName);
ExchangeSession.Message messageTest = session.getMessage(folder.folderUrl+"/"+messageName);
System.out.println("******");
messageTest.write(System.out);
System.out.println("Elapsed time " + (System.currentTimeMillis()-startTime) + " ms");

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