) _attributes
{
unsigned int count, max;
NSString *name, *value, *cid, *lowerName;
NSMutableString *resultPart;
BOOL skipAttribute;
showWhoWeAre();
lowerName = [_localName lowercaseString];
if (inStyle || ignoredContent)
;
else if ([lowerName isEqualToString: @"base"])
;
else if ([lowerName isEqualToString: @"meta"])
;
else if ([lowerName isEqualToString: @"body"])
inBody = YES;
else if ([lowerName isEqualToString: @"style"])
inStyle = YES;
else if (inBody)
{
if ([BannedTags containsObject: lowerName])
{
if (!ignoredContent)
ignoreTag = [lowerName copy];
ignoredContent++;
}
else
{
resultPart = [NSMutableString string];
[resultPart appendFormat: @"<%@", _rawName];
if ([VoidTags containsObject: lowerName])
{
if (!ignoredContent)
ignoreTag = [lowerName copy];
ignoredContent++;
}
max = [_attributes count];
for (count = 0; count < max; count++)
{
skipAttribute = NO;
name = [[_attributes nameAtIndex: count] lowercaseString];
if ([name hasPrefix: @"ON"])
skipAttribute = YES;
else if ([name isEqualToString: @"src"])
{
value = [_attributes valueAtIndex: count];
if ([value hasPrefix: @"cid:"])
{
cid = [NSString stringWithFormat: @"<%@>",
[value substringFromIndex: 4]];
value = [attachmentIds objectForKey: cid];
skipAttribute = (value == nil);
}
else if ([lowerName isEqualToString: @"img"])
{
/* [resultPart appendString:
@"src=\"/SOGo.woa/WebServerResources/empty.gif\""]; */
name = @"unsafe-src";
}
else
skipAttribute = YES;
}
else if (([name isEqualToString: @"background"] ||
([name isEqualToString: @"data"]
|| [name isEqualToString: @"classid"]))
&& [lowerName isEqualToString: @"object"])
{
value = [_attributes valueAtIndex: count];
name = [NSString stringWithFormat: @"unsafe-%@", name];
}
else if ([name isEqualToString: @"href"]
|| [name isEqualToString: @"action"])
{
value = [_attributes valueAtIndex: count];
skipAttribute = ([value rangeOfString: @"://"].location
== NSNotFound
&& ![value hasPrefix: @"mailto:"]
&& ![value hasPrefix: @"#"]);
}
// Avoid:
else if ([name isEqualToString: @"style"])
{
value = [_attributes valueAtIndex: count];
if ([value rangeOfString: @"url" options: NSCaseInsensitiveSearch].location != NSNotFound)
name = [NSString stringWithFormat: @"unsafe-%@", name];
}
else if (
// Mouse Events
[name isEqualToString: @"onclick"] ||
[name isEqualToString: @"ondblclick"] ||
[name isEqualToString: @"onmousedown"] ||
[name isEqualToString: @"onmousemove"] ||
[name isEqualToString: @"onmouseout"] ||
[name isEqualToString: @"onmouseup"] ||
[name isEqualToString: @"onmouseover"] ||
// Keyboard Events
[name isEqualToString: @"onkeydown"] ||
[name isEqualToString: @"onkeypress"] ||
[name isEqualToString: @"onkeyup"] ||
// Frame/Object Events
[name isEqualToString: @"onabort"] ||
[name isEqualToString: @"onerror"] ||
[name isEqualToString: @"onload"] ||
[name isEqualToString: @"onresize"] ||
[name isEqualToString: @"onscroll"] ||
[name isEqualToString: @"onunload"] ||
// Form Events
[name isEqualToString: @"onblur"] ||
[name isEqualToString: @"onchange"] ||
[name isEqualToString: @"onfocus"] ||
[name isEqualToString: @"onreset"] ||
[name isEqualToString: @"onselect"] ||
[name isEqualToString: @"onsubmit"])
{
skipAttribute = YES;
}
else
value = [_attributes valueAtIndex: count];
if (!skipAttribute)
[resultPart appendFormat: @" %@=\"%@\"",
name, [value stringByReplacingString: @"\""
withString: @"\\\""]];
}
if ([VoidTags containsObject: lowerName])
[resultPart appendString: @"/"];
[resultPart appendString: @">"];
[result appendString: resultPart];
}
}
}
- (void) _finishCSS
{
[css replaceString: @"" withString: @""];
[css replaceString: @".SOGoHTMLMail-CSS-Delimiter body"
withString: @".SOGoHTMLMail-CSS-Delimiter"];
}
- (void) endElement: (NSString *) _localName
namespace: (NSString *) _ns
rawName: (NSString *) _rawName
{
NSString *lowerName;
showWhoWeAre();
lowerName = [_localName lowercaseString];
if (ignoredContent)
{
if ([lowerName isEqualToString: ignoreTag])
{
ignoredContent--;
if (!ignoredContent)
{
[ignoreTag release];
ignoreTag = nil;
}
}
}
else
{
if (inStyle)
{
if ([lowerName isEqualToString: @"style"])
{
inStyle = NO;
inCSSDeclaration = NO;
}
}
else if (inBody)
{
if ([lowerName isEqualToString: @"body"])
{
inBody = NO;
if (css)
[self _finishCSS];
}
else
{
//NSLog (@"%@", _localName);
[result appendFormat: @"", _localName];
}
}
}
}
- (void) characters: (unichar *) _chars
length: (NSUInteger) _len
{
showWhoWeAre();
if (!ignoredContent)
{
if (inStyle)
[self _appendStyle: _chars length: _len];
else if (inBody)
{
NSString *s;
s = [NSString stringWithCharacters: _chars length: _len];
// HACK: This is to avoid appending the useless junk in the tag
// that Outlook adds. It seems to confuse the XML parser for
// forwarded messages as we get this in the _body_ of the email
// while we really aren't in it!
if (![s hasPrefix: @" xmlns:v=\"urn:schemas-microsoft-com:vml\""])
[result appendString: [s stringByEscapingHTMLString]];
}
}
}
- (void) ignorableWhitespace: (unichar *) _chars
length: (NSUInteger) _len
{
showWhoWeAre();
}
- (void) processingInstruction: (NSString *) _pi
data: (NSString *) _data
{
showWhoWeAre();
}
- (void) setDocumentLocator: (id ) _locator
{
showWhoWeAre();
}
- (void) skippedEntity: (NSString *) _entityName
{
showWhoWeAre();
}
/* SaxLexicalHandler */
- (void) comment: (unichar *) _chars
length: (int) _len
{
showWhoWeAre();
if (inStyle)
[self _appendStyle: _chars length: _len];
}
- (void) startDTD: (NSString *) _name
publicId: (NSString *) _pub
systemId: (NSString *) _sys
{
showWhoWeAre();
}
- (void) endDTD
{
showWhoWeAre();
}
- (void) startEntity: (NSString *) _name
{
showWhoWeAre();
}
- (void) endEntity: (NSString *) _name
{
showWhoWeAre();
}
- (void) startCDATA
{
showWhoWeAre();
}
- (void) endCDATA
{
showWhoWeAre();
}
@end
@interface NSDictionary (SOGoDebug)
- (void) dump;
@end
@implementation NSDictionary (SOGoDebug)
- (void) dump
{
NSEnumerator *keys;
NSString *key;
NSMutableString *dump;
dump = [NSMutableString new];
[dump appendFormat: @"\nNSDictionary dump (%@):\n", self];
keys = [[self allKeys] objectEnumerator];
key = [keys nextObject];
while (key)
{
[dump appendFormat: @"%@: %@\n", key, [self objectForKey: key]];
key = [keys nextObject];
}
[dump appendFormat: @"--- end ---\n"];
NSLog(@"%@", dump);
[dump release];
}
@end
@implementation UIxMailPartHTMLViewer
- (id) init
{
if ((self = [super init]))
{
handler = nil;
}
return self;
}
- (void) dealloc
{
[handler release];
[super dealloc];
}
- (xmlCharEncoding) _xmlCharEncoding
{
NSString *charset;
charset = [[bodyInfo objectForKey:@"parameterList"]
objectForKey: @"charset"];
if (![charset length])
charset = @"us-ascii";
return _xmlCharsetForCharset([charset lowercaseString]);
}
- (void) _parseContent
{
NSObject *parser;
NSData *preparsedContent;
SOGoMailObject *mail;
xmlCharEncoding enc;
mail = [self clientObject];
preparsedContent = _sanitizeContent([super decodedFlatContent]);
parser = [[SaxXMLReaderFactory standardXMLReaderFactory]
createXMLReaderForMimeType: @"text/html"];
handler = [_UIxHTMLMailContentHandler new];
[handler setAttachmentIds: [mail fetchFileAttachmentIds]];
// We check if we got an unsupported charset. If so
// we convert everything to UTF-16{LE,BE} so it passes
// in libxml2 and also in characters: length: defined
// in this file (that expects unichar:s)
enc = [self _xmlCharEncoding];
if (enc == XML_CHAR_ENCODING_ERROR)
{
NSString *s;
s = [NSString stringWithData: preparsedContent
usingEncodingNamed: [[bodyInfo objectForKey:@"parameterList"]
objectForKey: @"charset"]];
// In some rare cases (like #3276), we can get utterly broken email messages where
// HTML parts are wrongly encoded. We try to fall back to UTF-8 if that happens and
// if it still happens, we fall back to ISO-Latin-1.
if (!s)
{
s = [[NSString alloc] initWithData: preparsedContent encoding: NSUTF8StringEncoding];
if (!s)
s = [[NSString alloc] initWithData: preparsedContent encoding: NSISOLatin1StringEncoding];
AUTORELEASE(s);
}
#if BYTE_ORDER == BIG_ENDIAN
preparsedContent = [s dataUsingEncoding: NSUTF16BigEndianStringEncoding];
enc = XML_CHAR_ENCODING_UTF16BE;
#else
preparsedContent = [s dataUsingEncoding: NSUTF16LittleEndianStringEncoding];
enc = XML_CHAR_ENCODING_UTF16LE;
#endif
}
[handler setContentEncoding: enc];
[parser setContentHandler: handler];
[parser parseFromSource: preparsedContent];
}
- (NSString *) cssContent
{
NSString *cssContent, *css;
if (!handler)
[self _parseContent];
css = [handler css];
if ([css length])
cssContent
= [NSString stringWithFormat: @"",
[handler css]];
else
cssContent = @"";
return cssContent;
}
- (NSString *) flatContentAsString
{
if (!handler)
[self _parseContent];
return [handler result];
}
@end
@implementation UIxMailPartExternalHTMLViewer
- (id) init
{
if ((self = [super init]))
{
handler = nil;
}
return self;
}
- (void) dealloc
{
[handler release];
[super dealloc];
}
- (xmlCharEncoding) _xmlCharEncoding
{
NSString *charset;
charset = [[bodyInfo objectForKey:@"parameterList"]
objectForKey: @"charset"];
if (![charset length])
charset = @"us-ascii";
return _xmlCharsetForCharset([charset lowercaseString]);
}
- (void) _parseContent
{
NSObject *parser;
NSData *preparsedContent;
SOGoMailObject *mail;
SOGoMailBodyPart *part;
NSString *encoding;
xmlCharEncoding enc;
part = [self clientObject];
mail = [part mailObject];
preparsedContent = _sanitizeContent([part fetchBLOB]);
parser = [[SaxXMLReaderFactory standardXMLReaderFactory]
createXMLReaderForMimeType: @"text/html"];
encoding = [[part partInfo] valueForKey: @"encoding"];
if (![encoding length])
encoding = @"us-ascii";
handler = [_UIxHTMLMailContentHandler new];
[handler setAttachmentIds: [mail fetchFileAttachmentIds]];
// We check if we got an unsupported charset. If so
// we convert everything to UTF-16{LE,BE} so it passes
// in libxml2 and also in characters: length: defined
// in this file (that expects unichar:s)
enc = _xmlCharsetForCharset(encoding);
if (enc == XML_CHAR_ENCODING_ERROR)
{
NSString *s;
s = [NSString stringWithData: preparsedContent
usingEncodingNamed: [[bodyInfo objectForKey:@"parameterList"]
objectForKey: @"charset"]];
#if BYTE_ORDER == BIG_ENDIAN
preparsedContent = [s dataUsingEncoding: NSUTF16BigEndianStringEncoding];
enc = XML_CHAR_ENCODING_UTF16BE;
#else
preparsedContent = [s dataUsingEncoding: NSUTF16LittleEndianStringEncoding];
enc = XML_CHAR_ENCODING_UTF16LE;
#endif
}
[handler setContentEncoding: enc];
[parser setContentHandler: handler];
[parser parseFromSource: preparsedContent];
}
- (NSString *) filename
{
return [[self clientObject] filename];
}
- (NSString *) cssContent
{
NSString *cssContent, *css;
if (!handler)
[self _parseContent];
css = [handler css];
if ([css length])
cssContent
= [NSString stringWithFormat: @"",
[handler css]];
else
cssContent = @"";
return cssContent;
}
- (NSString *) flatContentAsString
{
if (!handler)
[self _parseContent];
return [handler result];
}
@end