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improve fault tolerance

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@23304 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-MacDonald 2006-08-16 13:45:38 +00:00
parent fd85d1446d
commit 2990609dbb
2 changed files with 32 additions and 1 deletions
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2
ChangeLog
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@ -12,6 +12,8 @@
* NSCharacterSets/decomposableCharSet.dat: Update for chinese etc.
* Source/NSCharacterSetData.h: Update with ranges in UnicodeData.txt
* Source/GSStream.m: Add partial implemenmtation of socks5
* Source/Additions/GSMime.m: improve fault tolerance when parsing
headers.
2006-08-15 Richard Frith-Macdonald <rfm@gnu.org>

31
Source/Additions/GSMime.m
View file

@ -2185,6 +2185,11 @@ NSDebugMLLog(@"GSMime", @"Header parsed - %@", info);
* headers it is parsing.
* RFC2047 word encoding in the header is handled by creating a
* string containing the decoded words.
* Strictly speaking, the header should be plain ASCII data with escapes
* for non-ascii characters, but for the sake of fault tolerance, we also
* attempt to use the default encoding currently set for the document,
* and if that fails we try UTF8. Only if none of these works do we
* assume that the header is corrupt/unparsable.
*/
- (NSString*) _decodeHeader
{
@ -2224,6 +2229,18 @@ NSDebugMLLog(@"GSMime", @"Header parsed - %@", info);
s = [s initWithBytes: beg
length: dst - beg
encoding: NSASCIIStringEncoding];
if (s == nil && _defaultEncoding != NSASCIIStringEncoding)
{
s = [s initWithBytes: beg
length: dst - beg
encoding: _defaultEncoding];
if (s == nil && _defaultEncoding != NSUTF8StringEncoding)
{
s = [s initWithBytes: beg
length: dst - beg
encoding: NSUTF8StringEncoding];
}
}
[hdr appendString: s];
RELEASE(s);
dst = beg;
@ -2249,7 +2266,7 @@ NSDebugMLLog(@"GSMime", @"Header parsed - %@", info);
*src = '\0';
s = [NSStringClass allocWithZone: NSDefaultMallocZone()];
s = [s initWithCString: (const char *)tmp];
s = [s initWithUTF8String: (const char *)tmp];
enc = [documentClass encodingFromCharset: s];
RELEASE(s);
@ -2322,6 +2339,18 @@ NSDebugMLLog(@"GSMime", @"Header parsed - %@", info);
s = [s initWithBytes: beg
length: dst - beg
encoding: NSASCIIStringEncoding];
if (s == nil && _defaultEncoding != NSASCIIStringEncoding)
{
s = [s initWithBytes: beg
length: dst - beg
encoding: _defaultEncoding];
if (s == nil && _defaultEncoding != NSUTF8StringEncoding)
{
s = [s initWithBytes: beg
length: dst - beg
encoding: NSUTF8StringEncoding];
}
}
[hdr appendString: s];
RELEASE(s);
dst = beg;