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Fixed charset substitution in meta tags

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This commit is contained in:
Ludovic Marcotte
2014-07-21 15:34:56 -04:00
parent 11920f592c
commit 08cd080d47
2 changed files with 20 additions and 17 deletions
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36
UI/MailPartViewers/UIxMailPartHTMLViewer.m
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@@ -146,34 +146,34 @@ static NSData* _sanitizeContent(NSData *theData)
const char *bytes;
char *buf;
int i, j, len;
BOOL found_delimiter;
BOOL found_delimiter, in_meta;
d = [NSMutableData dataWithData: theData];
bytes = [d bytes];
len = [d length];
i = 0;
in_meta = NO;
while (i < len)
{
// We check if we see </head> in which case, we don't do any kind
// of substitution there after.
if (i < len-6)
// We check if we see <meta ...> in which case, we substitute de charset= stuff.
if (i < len-5)
{
if ((*bytes == '<') &&
(*(bytes+1) == '/') &&
(*(bytes+2) == 'h' || *(bytes+2) == 'H') &&
(*(bytes+3) == 'e' || *(bytes+3) == 'E') &&
(*(bytes+4) == 'a' || *(bytes+4) == 'A') &&
(*(bytes+5) == 'd' || *(bytes+5) == 'D') &&
(*(bytes+6) == '>'))
break;
(*(bytes+1) == 'm' || *(bytes+2) == 'M') &&
(*(bytes+2) == 'e' || *(bytes+3) == 'E') &&
(*(bytes+3) == 't' || *(bytes+4) == 'T') &&
(*(bytes+4) == 'a' || *(bytes+5) == 'A') &&
(*(bytes+5) == ' '))
in_meta = YES;
}
// We search for something like :
//
// <meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
//
if (i < len-9)
if (in_meta && i < len-9)
{
if ((*bytes == 'c' || *bytes == 'C') &&
(*(bytes+1) == 'h' || *(bytes+1) == 'H') &&
@@ -195,16 +195,18 @@ static NSData* _sanitizeContent(NSData *theData)
// We haven't found anything, let's return the data untouched
if ((i+j) >= len)
{
found_delimiter = NO;
in_meta = found_delimiter = NO;
break;
}
}
if (found_delimiter)
[d replaceBytesInRange: NSMakeRange(i, j)
withBytes: NULL
length: 0];
break;
{
[d replaceBytesInRange: NSMakeRange(i, j)
withBytes: NULL
length: 0];
in_meta = found_delimiter = NO;
}
}
}