mirror of
https://github.com/gnustep/libs-base.git
synced 2025-05-31 08:41:03 +00:00
Some Mime improvements.
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@13725 72102866-910b-0410-8b05-ffd578937521
This commit is contained in:
Richard Frith-Macdonald
parent
06cc3ddbc4
commit
5651fe7dbb
2 changed files with 382 additions and 17 deletions
|
|
@ -43,11 +43,6 @@
|
|||
that permits overriding in order to extend the functionality to
|
||||
cope with new document types.
|
||||
</desc>
|
||||
<term>unparser</term>
|
||||
<desc>
|
||||
An object to take a mime/http document and produce a data object
|
||||
suitable for transmission.
|
||||
</desc>
|
||||
</deflist>
|
||||
</chapter>
|
||||
$Date$ $Revision$
|
||||
|
|
@ -60,6 +55,8 @@
|
|||
|
||||
static unsigned _count = 0;
|
||||
|
||||
static NSString *makeUniqueString();
|
||||
|
||||
static NSCharacterSet *specials = nil;
|
||||
|
||||
/*
|
||||
|
|
@ -207,12 +204,62 @@ decodeWord(unsigned char *dst, unsigned char *src, unsigned char *end, WE enc)
|
|||
static NSStringEncoding
|
||||
parseCharacterSet(NSString *token)
|
||||
{
|
||||
if ([token compare: @"us-ascii"] == NSOrderedSame)
|
||||
if (token == nil)
|
||||
{
|
||||
return NSASCIIStringEncoding; // Default character set.
|
||||
}
|
||||
|
||||
token = [token lowercaseString];
|
||||
|
||||
/*
|
||||
* Try the three most popular charactersets first - for efficiency.
|
||||
*/
|
||||
if ([token isEqualToString: @"us-ascii"] == YES)
|
||||
return NSASCIIStringEncoding;
|
||||
if ([token compare: @"iso-8859-1"] == NSOrderedSame)
|
||||
if ([token isEqualToString: @"iso-8859-1"] == YES)
|
||||
return NSISOLatin1StringEncoding;
|
||||
if ([token isEqualToString: @"utf-8"] == YES)
|
||||
return NSISOLatin1StringEncoding;
|
||||
|
||||
return NSASCIIStringEncoding;
|
||||
/*
|
||||
* Now try all remaining character sets in alphabetical order.
|
||||
*/
|
||||
if ([token isEqualToString: @"ascii"] == YES)
|
||||
return NSASCIIStringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-3"] == YES)
|
||||
return NSISOLatin3StringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-4"] == YES)
|
||||
return NSISOLatin4StringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-5"] == YES)
|
||||
return NSISOCyrillicStringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-6"] == YES)
|
||||
return NSISOArabicStringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-7"] == YES)
|
||||
return NSISOGreekStringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-8"] == YES)
|
||||
return NSISOHebrewStringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-9"] == YES)
|
||||
return NSISOLatin5StringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-10"] == YES)
|
||||
return NSISOLatin6StringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-13"] == YES)
|
||||
return NSISOLatin7StringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-14"] == YES)
|
||||
return NSISOLatin8StringEncoding;
|
||||
if ([token isEqualToString: @"iso-8859-15"] == YES)
|
||||
return NSISOLatin9StringEncoding;
|
||||
if ([token isEqualToString: @"windows-1250"] == YES)
|
||||
return NSWindowsCP1250StringEncoding;
|
||||
if ([token isEqualToString: @"windows-1251"] == YES)
|
||||
return NSWindowsCP1251StringEncoding;
|
||||
if ([token isEqualToString: @"windows-1252"] == YES)
|
||||
return NSWindowsCP1252StringEncoding;
|
||||
if ([token isEqualToString: @"windows-1253"] == YES)
|
||||
return NSWindowsCP1253StringEncoding;
|
||||
if ([token isEqualToString: @"windows-1254"] == YES)
|
||||
return NSWindowsCP1254StringEncoding;
|
||||
|
||||
return NSASCIIStringEncoding; // Default character set.
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
@ -1973,7 +2020,6 @@ parseCharacterSet(NSString *token)
|
|||
|
||||
if ([type isEqualToString: @"text"] == YES)
|
||||
{
|
||||
NSDictionary *params;
|
||||
NSString *charset;
|
||||
NSStringEncoding stringEncoding;
|
||||
NSString *string;
|
||||
|
|
@ -1981,8 +2027,7 @@ parseCharacterSet(NSString *token)
|
|||
/*
|
||||
* Assume that content type is best represented as NSString.
|
||||
*/
|
||||
params = [typeInfo objectForKey: @"Parameters"];
|
||||
charset = [params objectForKey: @"charset"];
|
||||
charset = [typeInfo parameterForKey: @"charset"];
|
||||
stringEncoding = parseCharacterSet(charset);
|
||||
string = [[NSString alloc] initWithData: data
|
||||
encoding: stringEncoding];
|
||||
|
|
@ -2795,7 +2840,9 @@ static NSCharacterSet *tokenSet = nil;
|
|||
|
||||
if ([content isKindOfClass: [NSString class]] == YES)
|
||||
{
|
||||
NSStringEncoding enc = NSUTF8StringEncoding;
|
||||
GSMimeHeader *hdr = [self headerNamed: @"content-type"];
|
||||
NSString *charset = [hdr parameterForKey: @"charset"];
|
||||
NSStringEncoding enc = parseCharacterSet(charset);
|
||||
|
||||
d = [content dataUsingEncoding: enc];
|
||||
}
|
||||
|
|
@ -2819,7 +2866,9 @@ static NSCharacterSet *tokenSet = nil;
|
|||
}
|
||||
else if ([content isKindOfClass: [NSData class]] == YES)
|
||||
{
|
||||
NSStringEncoding enc = NSUTF8StringEncoding;
|
||||
GSMimeHeader *hdr = [self headerNamed: @"content-type"];
|
||||
NSString *charset = [hdr parameterForKey: @"charset"];
|
||||
NSStringEncoding enc = parseCharacterSet(charset);
|
||||
|
||||
s = [[NSString alloc] initWithData: content encoding: enc];
|
||||
AUTORELEASE(s);
|
||||
|
|
@ -2941,12 +2990,10 @@ static NSCharacterSet *tokenSet = nil;
|
|||
*/
|
||||
- (GSMimeHeader*) makeContentID
|
||||
{
|
||||
NSString *val;
|
||||
GSMimeHeader *hdr;
|
||||
|
||||
val = [NSString stringWithFormat: @"GSMime%08x%08x", self, _count++];
|
||||
hdr = [[GSMimeHeader alloc] initWithName: @"content-id"
|
||||
value: val
|
||||
value: makeUniqueString()
|
||||
parameters: nil];
|
||||
[self setHeader: hdr];
|
||||
RELEASE(hdr);
|
||||
|
|
@ -3050,3 +3097,319 @@ static NSCharacterSet *tokenSet = nil;
|
|||
|
||||
@end
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
#include <Foundation/NSByteOrder.h>
|
||||
|
||||
struct MD5Context
|
||||
{
|
||||
unsigned long buf[4];
|
||||
unsigned long bits[2];
|
||||
unsigned char in[64];
|
||||
};
|
||||
static void MD5Init (struct MD5Context *context);
|
||||
static void MD5Update (struct MD5Context *context, unsigned char const *buf,
|
||||
unsigned len);
|
||||
static void MD5Final (unsigned char digest[16], struct MD5Context *context);
|
||||
static void MD5Transform (unsigned long buf[4], unsigned long const in[16]);
|
||||
|
||||
/*
|
||||
* This code implements the MD5 message-digest algorithm.
|
||||
* The algorithm is due to Ron Rivest. This code was
|
||||
* written by Colin Plumb in 1993, no copyright is claimed.
|
||||
* This code is in the public domain; do with it what you wish.
|
||||
*
|
||||
* Equivalent code is available from RSA Data Security, Inc.
|
||||
* This code has been tested against that, and is equivalent,
|
||||
* except that you don't need to include two pages of legalese
|
||||
* with every copy.
|
||||
*
|
||||
* To compute the message digest of a chunk of bytes, declare an
|
||||
* MD5Context structure, pass it to MD5Init, call MD5Update as
|
||||
* needed on buffers full of bytes, and then call MD5Final, which
|
||||
* will fill a supplied 16-byte array with the digest.
|
||||
*/
|
||||
#include <string.h> /* for memcpy() */
|
||||
|
||||
/*
|
||||
* Ensure data is little-endian
|
||||
*/
|
||||
static void littleEndian (void *buf, unsigned longs)
|
||||
{
|
||||
unsigned long *ptr = (unsigned long*)buf;
|
||||
do
|
||||
{
|
||||
*ptr = NSSwapHostLongToLittle(*ptr);
|
||||
ptr++;
|
||||
}
|
||||
while (--longs);
|
||||
}
|
||||
|
||||
/*
|
||||
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
|
||||
* initialization constants.
|
||||
*/
|
||||
static void MD5Init (struct MD5Context *ctx)
|
||||
{
|
||||
ctx->buf[0] = 0x67452301;
|
||||
ctx->buf[1] = 0xefcdab89;
|
||||
ctx->buf[2] = 0x98badcfe;
|
||||
ctx->buf[3] = 0x10325476;
|
||||
|
||||
ctx->bits[0] = 0;
|
||||
ctx->bits[1] = 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Update context to reflect the concatenation of another buffer full
|
||||
* of bytes.
|
||||
*/
|
||||
static void MD5Update (struct MD5Context *ctx, unsigned char const *buf,
|
||||
unsigned len)
|
||||
{
|
||||
unsigned long t;
|
||||
|
||||
/* Update bitcount */
|
||||
|
||||
t = ctx->bits[0];
|
||||
if ((ctx->bits[0] = t + ((unsigned long) len << 3)) < t)
|
||||
ctx->bits[1]++; /* Carry from low to high */
|
||||
ctx->bits[1] += len >> 29;
|
||||
|
||||
t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
|
||||
|
||||
/* Handle any leading odd-sized chunks */
|
||||
|
||||
if (t)
|
||||
{
|
||||
unsigned char *p = (unsigned char *) ctx->in + t;
|
||||
|
||||
t = 64 - t;
|
||||
if (len < t)
|
||||
{
|
||||
memcpy (p, buf, len);
|
||||
return;
|
||||
}
|
||||
memcpy (p, buf, t);
|
||||
littleEndian (ctx->in, 16);
|
||||
MD5Transform (ctx->buf, (unsigned long *) ctx->in);
|
||||
buf += t;
|
||||
len -= t;
|
||||
}
|
||||
/* Process data in 64-byte chunks */
|
||||
|
||||
while (len >= 64)
|
||||
{
|
||||
memcpy (ctx->in, buf, 64);
|
||||
littleEndian (ctx->in, 16);
|
||||
MD5Transform (ctx->buf, (unsigned long *) ctx->in);
|
||||
buf += 64;
|
||||
len -= 64;
|
||||
}
|
||||
|
||||
/* Handle any remaining bytes of data. */
|
||||
|
||||
memcpy (ctx->in, buf, len);
|
||||
}
|
||||
|
||||
/*
|
||||
* Final wrapup - pad to 64-byte boundary with the bit pattern
|
||||
* 1 0* (64-bit count of bits processed, MSB-first)
|
||||
*/
|
||||
static void MD5Final (unsigned char digest[16], struct MD5Context *ctx)
|
||||
{
|
||||
unsigned count;
|
||||
unsigned char *p;
|
||||
|
||||
/* Compute number of bytes mod 64 */
|
||||
count = (ctx->bits[0] >> 3) & 0x3F;
|
||||
|
||||
/* Set the first char of padding to 0x80. This is safe since there is
|
||||
always at least one byte free */
|
||||
p = ctx->in + count;
|
||||
*p++ = 0x80;
|
||||
|
||||
/* Bytes of padding needed to make 64 bytes */
|
||||
count = 64 - 1 - count;
|
||||
|
||||
/* Pad out to 56 mod 64 */
|
||||
if (count < 8)
|
||||
{
|
||||
/* Two lots of padding: Pad the first block to 64 bytes */
|
||||
memset (p, 0, count);
|
||||
littleEndian (ctx->in, 16);
|
||||
MD5Transform (ctx->buf, (unsigned long *) ctx->in);
|
||||
|
||||
/* Now fill the next block with 56 bytes */
|
||||
memset (ctx->in, 0, 56);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Pad block to 56 bytes */
|
||||
memset (p, 0, count - 8);
|
||||
}
|
||||
littleEndian (ctx->in, 14);
|
||||
|
||||
/* Append length in bits and transform */
|
||||
((unsigned long *) ctx->in)[14] = ctx->bits[0];
|
||||
((unsigned long *) ctx->in)[15] = ctx->bits[1];
|
||||
|
||||
MD5Transform (ctx->buf, (unsigned long *) ctx->in);
|
||||
littleEndian ((unsigned char *) ctx->buf, 4);
|
||||
memcpy (digest, ctx->buf, 16);
|
||||
memset (ctx, 0, sizeof (ctx)); /* In case it's sensitive */
|
||||
}
|
||||
|
||||
/* The four core functions - F1 is optimized somewhat */
|
||||
|
||||
/* #define F1(x, y, z) (x & y | ~x & z) */
|
||||
#define F1(x, y, z) (z ^ (x & (y ^ z)))
|
||||
#define F2(x, y, z) F1(z, x, y)
|
||||
#define F3(x, y, z) (x ^ y ^ z)
|
||||
#define F4(x, y, z) (y ^ (x | ~z))
|
||||
|
||||
/* This is the central step in the MD5 algorithm. */
|
||||
#define MD5STEP(f, w, x, y, z, data, s) \
|
||||
( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
|
||||
|
||||
/*
|
||||
* The core of the MD5 algorithm, this alters an existing MD5 hash to
|
||||
* reflect the addition of 16 longwords of new data. MD5Update blocks
|
||||
* the data and converts bytes into longwords for this routine.
|
||||
*/
|
||||
static void MD5Transform (unsigned long buf[4], unsigned long const in[16])
|
||||
{
|
||||
register unsigned long a, b, c, d;
|
||||
|
||||
a = buf[0];
|
||||
b = buf[1];
|
||||
c = buf[2];
|
||||
d = buf[3];
|
||||
|
||||
MD5STEP (F1, a, b, c, d, in[0] + 0xd76aa478, 7);
|
||||
MD5STEP (F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
|
||||
MD5STEP (F1, c, d, a, b, in[2] + 0x242070db, 17);
|
||||
MD5STEP (F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
|
||||
MD5STEP (F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
|
||||
MD5STEP (F1, d, a, b, c, in[5] + 0x4787c62a, 12);
|
||||
MD5STEP (F1, c, d, a, b, in[6] + 0xa8304613, 17);
|
||||
MD5STEP (F1, b, c, d, a, in[7] + 0xfd469501, 22);
|
||||
MD5STEP (F1, a, b, c, d, in[8] + 0x698098d8, 7);
|
||||
MD5STEP (F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
|
||||
MD5STEP (F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
|
||||
MD5STEP (F1, b, c, d, a, in[11] + 0x895cd7be, 22);
|
||||
MD5STEP (F1, a, b, c, d, in[12] + 0x6b901122, 7);
|
||||
MD5STEP (F1, d, a, b, c, in[13] + 0xfd987193, 12);
|
||||
MD5STEP (F1, c, d, a, b, in[14] + 0xa679438e, 17);
|
||||
MD5STEP (F1, b, c, d, a, in[15] + 0x49b40821, 22);
|
||||
|
||||
MD5STEP (F2, a, b, c, d, in[1] + 0xf61e2562, 5);
|
||||
MD5STEP (F2, d, a, b, c, in[6] + 0xc040b340, 9);
|
||||
MD5STEP (F2, c, d, a, b, in[11] + 0x265e5a51, 14);
|
||||
MD5STEP (F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
|
||||
MD5STEP (F2, a, b, c, d, in[5] + 0xd62f105d, 5);
|
||||
MD5STEP (F2, d, a, b, c, in[10] + 0x02441453, 9);
|
||||
MD5STEP (F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
|
||||
MD5STEP (F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
|
||||
MD5STEP (F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
|
||||
MD5STEP (F2, d, a, b, c, in[14] + 0xc33707d6, 9);
|
||||
MD5STEP (F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
|
||||
MD5STEP (F2, b, c, d, a, in[8] + 0x455a14ed, 20);
|
||||
MD5STEP (F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
|
||||
MD5STEP (F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
|
||||
MD5STEP (F2, c, d, a, b, in[7] + 0x676f02d9, 14);
|
||||
MD5STEP (F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
|
||||
|
||||
MD5STEP (F3, a, b, c, d, in[5] + 0xfffa3942, 4);
|
||||
MD5STEP (F3, d, a, b, c, in[8] + 0x8771f681, 11);
|
||||
MD5STEP (F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
|
||||
MD5STEP (F3, b, c, d, a, in[14] + 0xfde5380c, 23);
|
||||
MD5STEP (F3, a, b, c, d, in[1] + 0xa4beea44, 4);
|
||||
MD5STEP (F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
|
||||
MD5STEP (F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
|
||||
MD5STEP (F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
|
||||
MD5STEP (F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
|
||||
MD5STEP (F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
|
||||
MD5STEP (F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
|
||||
MD5STEP (F3, b, c, d, a, in[6] + 0x04881d05, 23);
|
||||
MD5STEP (F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
|
||||
MD5STEP (F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
|
||||
MD5STEP (F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
|
||||
MD5STEP (F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
|
||||
|
||||
MD5STEP (F4, a, b, c, d, in[0] + 0xf4292244, 6);
|
||||
MD5STEP (F4, d, a, b, c, in[7] + 0x432aff97, 10);
|
||||
MD5STEP (F4, c, d, a, b, in[14] + 0xab9423a7, 15);
|
||||
MD5STEP (F4, b, c, d, a, in[5] + 0xfc93a039, 21);
|
||||
MD5STEP (F4, a, b, c, d, in[12] + 0x655b59c3, 6);
|
||||
MD5STEP (F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
|
||||
MD5STEP (F4, c, d, a, b, in[10] + 0xffeff47d, 15);
|
||||
MD5STEP (F4, b, c, d, a, in[1] + 0x85845dd1, 21);
|
||||
MD5STEP (F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
|
||||
MD5STEP (F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
|
||||
MD5STEP (F4, c, d, a, b, in[6] + 0xa3014314, 15);
|
||||
MD5STEP (F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
|
||||
MD5STEP (F4, a, b, c, d, in[4] + 0xf7537e82, 6);
|
||||
MD5STEP (F4, d, a, b, c, in[11] + 0xbd3af235, 10);
|
||||
MD5STEP (F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
|
||||
MD5STEP (F4, b, c, d, a, in[9] + 0xeb86d391, 21);
|
||||
|
||||
buf[0] += a;
|
||||
buf[1] += b;
|
||||
buf[2] += c;
|
||||
buf[3] += d;
|
||||
}
|
||||
|
||||
/*
|
||||
* Make a probably unique string of 40 hexadecimal digits
|
||||
* consisting of an MD5 digest of soe pseudo random stuff,
|
||||
* plus an incrementing counter.
|
||||
*/
|
||||
static NSString *
|
||||
makeUniqueString()
|
||||
{
|
||||
static int count = 0;
|
||||
struct MD5Context ctx;
|
||||
const char *bytes;
|
||||
unsigned int i;
|
||||
unsigned char digest[20];
|
||||
unsigned char hex[4];
|
||||
|
||||
MD5Init(&ctx);
|
||||
bytes = [[[NSProcessInfo processInfo] globallyUniqueString] lossyCString];
|
||||
MD5Update(&ctx, bytes, strlen(bytes));
|
||||
count++;
|
||||
MD5Update(&ctx, (unsigned char*)&count, sizeof(count));
|
||||
MD5Final(digest, &ctx);
|
||||
digest[16] = (_count >> 24) & 0xff;
|
||||
digest[17] = (_count >> 16) & 0xff;
|
||||
digest[18] = (_count >> 8) & 0xff;
|
||||
digest[19] = _count & 0xff;
|
||||
for (i = 0; i < 20; i++)
|
||||
{
|
||||
int v;
|
||||
|
||||
v = (digest[i] >> 4) & 0xf;
|
||||
if (v > 9)
|
||||
{
|
||||
hex[i*2] = 'A' + v - 10;
|
||||
}
|
||||
else
|
||||
{
|
||||
hex[i*2] = '0' + v;
|
||||
}
|
||||
v = digest[i] & 0xf;
|
||||
if (v > 9)
|
||||
{
|
||||
hex[i*2 + 1] = 'A' + v - 10;
|
||||
}
|
||||
else
|
||||
{
|
||||
hex[i*2 + 1] = '0' + v;
|
||||
}
|
||||
}
|
||||
return [NSString stringWithCString: hex length: 40];
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue