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Georg Hopp 14 years ago
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  1. 1
      .gitignore
  2. 576
      base64.c
  3. 77
      base64.h
  4. 67
      bigpoint_cclass.c
  5. 33
      bigpoint_cclass.h
  6. 168
      bigpoint_crypt.c
  7. 49
      bigpoint_crypt.h
  8. 62
      bigpoint_dyntype.c
  9. 30
      bigpoint_dyntype.h
  10. 102
      bigpoint_packet.c
  11. 39
      bigpoint_packet.h
  12. 11
      bigpoint_token_cryptdec.c
  13. 17
      bigpoint_token_cryptdec.h
  14. 40
      test.c
  15. 40
      test2.c
  16. 41
      test3.c

1
.gitignore
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.*.swp

576
base64.c
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/* -*- buffer-read-only: t -*- vi: set ro: */
/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
/* base64.c -- Encode binary data using printable characters.
Copyright (C) 1999, 2000, 2001, 2004, 2005, 2006, 2009, 2010 Free Software
Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* Written by Simon Josefsson. Partially adapted from GNU MailUtils
* (mailbox/filter_trans.c, as of 2004-11-28). Improved by review
* from Paul Eggert, Bruno Haible, and Stepan Kasal.
*
* See also RFC 3548 <http://www.ietf.org/rfc/rfc3548.txt>.
*
* Be careful with error checking. Here is how you would typically
* use these functions:
*
* bool ok = base64_decode_alloc (in, inlen, &out, &outlen);
* if (!ok)
* FAIL: input was not valid base64
* if (out == NULL)
* FAIL: memory allocation error
* OK: data in OUT/OUTLEN
*
* size_t outlen = base64_encode_alloc (in, inlen, &out);
* if (out == NULL && outlen == 0 && inlen != 0)
* FAIL: input too long
* if (out == NULL)
* FAIL: memory allocation error
* OK: data in OUT/OUTLEN.
*
*/
/* Get prototype. */
#include "base64.h"
/* Get malloc. */
#include <stdlib.h>
/* Get UCHAR_MAX. */
#include <limits.h>
#include <string.h>
/* C89 compliant way to cast 'char' to 'unsigned char'. */
static inline unsigned char
to_uchar (char ch)
{
return ch;
}
/* Base64 encode IN array of size INLEN into OUT array of size OUTLEN.
If OUTLEN is less than BASE64_LENGTH(INLEN), write as many bytes as
possible. If OUTLEN is larger than BASE64_LENGTH(INLEN), also zero
terminate the output buffer. */
void
base64_encode (const char *restrict in, size_t inlen,
char *restrict out, size_t outlen)
{
static const char b64str[64] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
while (inlen && outlen)
{
*out++ = b64str[(to_uchar (in[0]) >> 2) & 0x3f];
if (!--outlen)
break;
*out++ = b64str[((to_uchar (in[0]) << 4)
+ (--inlen ? to_uchar (in[1]) >> 4 : 0))
& 0x3f];
if (!--outlen)
break;
*out++ =
(inlen
? b64str[((to_uchar (in[1]) << 2)
+ (--inlen ? to_uchar (in[2]) >> 6 : 0))
& 0x3f]
: '=');
if (!--outlen)
break;
*out++ = inlen ? b64str[to_uchar (in[2]) & 0x3f] : '=';
if (!--outlen)
break;
if (inlen)
inlen--;
if (inlen)
in += 3;
}
if (outlen)
*out = '\0';
}
/* Allocate a buffer and store zero terminated base64 encoded data
from array IN of size INLEN, returning BASE64_LENGTH(INLEN), i.e.,
the length of the encoded data, excluding the terminating zero. On
return, the OUT variable will hold a pointer to newly allocated
memory that must be deallocated by the caller. If output string
length would overflow, 0 is returned and OUT is set to NULL. If
memory allocation failed, OUT is set to NULL, and the return value
indicates length of the requested memory block, i.e.,
BASE64_LENGTH(inlen) + 1. */
size_t
base64_encode_alloc (const char *in, size_t inlen, char **out)
{
size_t outlen = 1 + BASE64_LENGTH (inlen);
/* Check for overflow in outlen computation.
*
* If there is no overflow, outlen >= inlen.
*
* If the operation (inlen + 2) overflows then it yields at most +1, so
* outlen is 0.
*
* If the multiplication overflows, we lose at least half of the
* correct value, so the result is < ((inlen + 2) / 3) * 2, which is
* less than (inlen + 2) * 0.66667, which is less than inlen as soon as
* (inlen > 4).
*/
if (inlen > outlen)
{
*out = NULL;
return 0;
}
*out = malloc (outlen);
if (!*out)
return outlen;
base64_encode (in, inlen, *out, outlen);
return outlen - 1;
}
/* With this approach this file works independent of the charset used
(think EBCDIC). However, it does assume that the characters in the
Base64 alphabet (A-Za-z0-9+/) are encoded in 0..255. POSIX
1003.1-2001 require that char and unsigned char are 8-bit
quantities, though, taking care of that problem. But this may be a
potential problem on non-POSIX C99 platforms.
IBM C V6 for AIX mishandles "#define B64(x) ...'x'...", so use "_"
as the formal parameter rather than "x". */
#define B64(_) \
((_) == 'A' ? 0 \
: (_) == 'B' ? 1 \
: (_) == 'C' ? 2 \
: (_) == 'D' ? 3 \
: (_) == 'E' ? 4 \
: (_) == 'F' ? 5 \
: (_) == 'G' ? 6 \
: (_) == 'H' ? 7 \
: (_) == 'I' ? 8 \
: (_) == 'J' ? 9 \
: (_) == 'K' ? 10 \
: (_) == 'L' ? 11 \
: (_) == 'M' ? 12 \
: (_) == 'N' ? 13 \
: (_) == 'O' ? 14 \
: (_) == 'P' ? 15 \
: (_) == 'Q' ? 16 \
: (_) == 'R' ? 17 \
: (_) == 'S' ? 18 \
: (_) == 'T' ? 19 \
: (_) == 'U' ? 20 \
: (_) == 'V' ? 21 \
: (_) == 'W' ? 22 \
: (_) == 'X' ? 23 \
: (_) == 'Y' ? 24 \
: (_) == 'Z' ? 25 \
: (_) == 'a' ? 26 \
: (_) == 'b' ? 27 \
: (_) == 'c' ? 28 \
: (_) == 'd' ? 29 \
: (_) == 'e' ? 30 \
: (_) == 'f' ? 31 \
: (_) == 'g' ? 32 \
: (_) == 'h' ? 33 \
: (_) == 'i' ? 34 \
: (_) == 'j' ? 35 \
: (_) == 'k' ? 36 \
: (_) == 'l' ? 37 \
: (_) == 'm' ? 38 \
: (_) == 'n' ? 39 \
: (_) == 'o' ? 40 \
: (_) == 'p' ? 41 \
: (_) == 'q' ? 42 \
: (_) == 'r' ? 43 \
: (_) == 's' ? 44 \
: (_) == 't' ? 45 \
: (_) == 'u' ? 46 \
: (_) == 'v' ? 47 \
: (_) == 'w' ? 48 \
: (_) == 'x' ? 49 \
: (_) == 'y' ? 50 \
: (_) == 'z' ? 51 \
: (_) == '0' ? 52 \
: (_) == '1' ? 53 \
: (_) == '2' ? 54 \
: (_) == '3' ? 55 \
: (_) == '4' ? 56 \
: (_) == '5' ? 57 \
: (_) == '6' ? 58 \
: (_) == '7' ? 59 \
: (_) == '8' ? 60 \
: (_) == '9' ? 61 \
: (_) == '+' ? 62 \
: (_) == '/' ? 63 \
: -1)
static const signed char b64[0x100] = {
B64 (0), B64 (1), B64 (2), B64 (3),
B64 (4), B64 (5), B64 (6), B64 (7),
B64 (8), B64 (9), B64 (10), B64 (11),
B64 (12), B64 (13), B64 (14), B64 (15),
B64 (16), B64 (17), B64 (18), B64 (19),
B64 (20), B64 (21), B64 (22), B64 (23),
B64 (24), B64 (25), B64 (26), B64 (27),
B64 (28), B64 (29), B64 (30), B64 (31),
B64 (32), B64 (33), B64 (34), B64 (35),
B64 (36), B64 (37), B64 (38), B64 (39),
B64 (40), B64 (41), B64 (42), B64 (43),
B64 (44), B64 (45), B64 (46), B64 (47),
B64 (48), B64 (49), B64 (50), B64 (51),
B64 (52), B64 (53), B64 (54), B64 (55),
B64 (56), B64 (57), B64 (58), B64 (59),
B64 (60), B64 (61), B64 (62), B64 (63),
B64 (64), B64 (65), B64 (66), B64 (67),
B64 (68), B64 (69), B64 (70), B64 (71),
B64 (72), B64 (73), B64 (74), B64 (75),
B64 (76), B64 (77), B64 (78), B64 (79),
B64 (80), B64 (81), B64 (82), B64 (83),
B64 (84), B64 (85), B64 (86), B64 (87),
B64 (88), B64 (89), B64 (90), B64 (91),
B64 (92), B64 (93), B64 (94), B64 (95),
B64 (96), B64 (97), B64 (98), B64 (99),
B64 (100), B64 (101), B64 (102), B64 (103),
B64 (104), B64 (105), B64 (106), B64 (107),
B64 (108), B64 (109), B64 (110), B64 (111),
B64 (112), B64 (113), B64 (114), B64 (115),
B64 (116), B64 (117), B64 (118), B64 (119),
B64 (120), B64 (121), B64 (122), B64 (123),
B64 (124), B64 (125), B64 (126), B64 (127),
B64 (128), B64 (129), B64 (130), B64 (131),
B64 (132), B64 (133), B64 (134), B64 (135),
B64 (136), B64 (137), B64 (138), B64 (139),
B64 (140), B64 (141), B64 (142), B64 (143),
B64 (144), B64 (145), B64 (146), B64 (147),
B64 (148), B64 (149), B64 (150), B64 (151),
B64 (152), B64 (153), B64 (154), B64 (155),
B64 (156), B64 (157), B64 (158), B64 (159),
B64 (160), B64 (161), B64 (162), B64 (163),
B64 (164), B64 (165), B64 (166), B64 (167),
B64 (168), B64 (169), B64 (170), B64 (171),
B64 (172), B64 (173), B64 (174), B64 (175),
B64 (176), B64 (177), B64 (178), B64 (179),
B64 (180), B64 (181), B64 (182), B64 (183),
B64 (184), B64 (185), B64 (186), B64 (187),
B64 (188), B64 (189), B64 (190), B64 (191),
B64 (192), B64 (193), B64 (194), B64 (195),
B64 (196), B64 (197), B64 (198), B64 (199),
B64 (200), B64 (201), B64 (202), B64 (203),
B64 (204), B64 (205), B64 (206), B64 (207),
B64 (208), B64 (209), B64 (210), B64 (211),
B64 (212), B64 (213), B64 (214), B64 (215),
B64 (216), B64 (217), B64 (218), B64 (219),
B64 (220), B64 (221), B64 (222), B64 (223),
B64 (224), B64 (225), B64 (226), B64 (227),
B64 (228), B64 (229), B64 (230), B64 (231),
B64 (232), B64 (233), B64 (234), B64 (235),
B64 (236), B64 (237), B64 (238), B64 (239),
B64 (240), B64 (241), B64 (242), B64 (243),
B64 (244), B64 (245), B64 (246), B64 (247),
B64 (248), B64 (249), B64 (250), B64 (251),
B64 (252), B64 (253), B64 (254), B64 (255)
};
#if UCHAR_MAX == 255
# define uchar_in_range(c) true
#else
# define uchar_in_range(c) ((c) <= 255)
#endif
/* Return true if CH is a character from the Base64 alphabet, and
false otherwise. Note that '=' is padding and not considered to be
part of the alphabet. */
bool
isbase64 (char ch)
{
return uchar_in_range (to_uchar (ch)) && 0 <= b64[to_uchar (ch)];
}
/* Initialize decode-context buffer, CTX. */
void
base64_decode_ctx_init (struct base64_decode_context *ctx)
{
ctx->i = 0;
}
/* If CTX->i is 0 or 4, there are four or more bytes in [*IN..IN_END), and
none of those four is a newline, then return *IN. Otherwise, copy up to
4 - CTX->i non-newline bytes from that range into CTX->buf, starting at
index CTX->i and setting CTX->i to reflect the number of bytes copied,
and return CTX->buf. In either case, advance *IN to point to the byte
after the last one processed, and set *N_NON_NEWLINE to the number of
verified non-newline bytes accessible through the returned pointer. */
static inline char *
get_4 (struct base64_decode_context *ctx,
char const *restrict *in, char const *restrict in_end,
size_t *n_non_newline)
{
if (ctx->i == 4)
ctx->i = 0;
if (ctx->i == 0)
{
char const *t = *in;
if (4 <= in_end - *in && memchr (t, '\n', 4) == NULL)
{
/* This is the common case: no newline. */
*in += 4;
*n_non_newline = 4;
return (char *) t;
}
}
{
/* Copy non-newline bytes into BUF. */
char const *p = *in;
while (p < in_end)
{
char c = *p++;
if (c != '\n')
{
ctx->buf[ctx->i++] = c;
if (ctx->i == 4)
break;
}
}
*in = p;
*n_non_newline = ctx->i;
return ctx->buf;
}
}
#define return_false \
do \
{ \
*outp = out; \
return false; \
} \
while (false)
/* Decode up to four bytes of base64-encoded data, IN, of length INLEN
into the output buffer, *OUT, of size *OUTLEN bytes. Return true if
decoding is successful, false otherwise. If *OUTLEN is too small,
as many bytes as possible are written to *OUT. On return, advance
*OUT to point to the byte after the last one written, and decrement
*OUTLEN to reflect the number of bytes remaining in *OUT. */
static inline bool
decode_4 (char const *restrict in, size_t inlen,
char *restrict *outp, size_t *outleft)
{
char *out = *outp;
if (inlen < 2)
return false;
if (!isbase64 (in[0]) || !isbase64 (in[1]))
return false;
if (*outleft)
{
*out++ = ((b64[to_uchar (in[0])] << 2)
| (b64[to_uchar (in[1])] >> 4));
--*outleft;
}
if (inlen == 2)
return_false;
if (in[2] == '=')
{
if (inlen != 4)
return_false;
if (in[3] != '=')
return_false;
}
else
{
if (!isbase64 (in[2]))
return_false;
if (*outleft)
{
*out++ = (((b64[to_uchar (in[1])] << 4) & 0xf0)
| (b64[to_uchar (in[2])] >> 2));
--*outleft;
}
if (inlen == 3)
return_false;
if (in[3] == '=')
{
if (inlen != 4)
return_false;
}
else
{
if (!isbase64 (in[3]))
return_false;
if (*outleft)
{
*out++ = (((b64[to_uchar (in[2])] << 6) & 0xc0)
| b64[to_uchar (in[3])]);
--*outleft;
}
}
}
*outp = out;
return true;
}
/* Decode base64-encoded input array IN of length INLEN to output array
OUT that can hold *OUTLEN bytes. The input data may be interspersed
with newlines. Return true if decoding was successful, i.e. if the
input was valid base64 data, false otherwise. If *OUTLEN is too
small, as many bytes as possible will be written to OUT. On return,
*OUTLEN holds the length of decoded bytes in OUT. Note that as soon
as any non-alphabet, non-newline character is encountered, decoding
is stopped and false is returned. If INLEN is zero, then process
only whatever data is stored in CTX.
Initially, CTX must have been initialized via base64_decode_ctx_init.
Subsequent calls to this function must reuse whatever state is recorded
in that buffer. It is necessary for when a quadruple of base64 input
bytes spans two input buffers.
If CTX is NULL then newlines are treated as garbage and the input
buffer is processed as a unit. */
bool
base64_decode_ctx (struct base64_decode_context *ctx,
const char *restrict in, size_t inlen,
char *restrict out, size_t *outlen)
{
size_t outleft = *outlen;
bool ignore_newlines = ctx != NULL;
bool flush_ctx = false;
unsigned int ctx_i = 0;
if (ignore_newlines)
{
ctx_i = ctx->i;
flush_ctx = inlen == 0;
}
while (true)
{
size_t outleft_save = outleft;
if (ctx_i == 0 && !flush_ctx)
{
while (true)
{
/* Save a copy of outleft, in case we need to re-parse this
block of four bytes. */
outleft_save = outleft;
if (!decode_4 (in, inlen, &out, &outleft))
break;
in += 4;
inlen -= 4;
}
}
if (inlen == 0 && !flush_ctx)
break;
/* Handle the common case of 72-byte wrapped lines.
This also handles any other multiple-of-4-byte wrapping. */
if (inlen && *in == '\n' && ignore_newlines)
{
++in;
--inlen;
continue;
}
/* Restore OUT and OUTLEFT. */
out -= outleft_save - outleft;
outleft = outleft_save;
{
char const *in_end = in + inlen;
char const *non_nl;
if (ignore_newlines)
non_nl = get_4 (ctx, &in, in_end, &inlen);
else
non_nl = in; /* Might have nl in this case. */
/* If the input is empty or consists solely of newlines (0 non-newlines),
then we're done. Likewise if there are fewer than 4 bytes when not
flushing context and not treating newlines as garbage. */
if (inlen == 0 || (inlen < 4 && !flush_ctx && ignore_newlines))
{
inlen = 0;
break;
}
if (!decode_4 (non_nl, inlen, &out, &outleft))
break;
inlen = in_end - in;
}
}
*outlen -= outleft;
return inlen == 0;
}
/* Allocate an output buffer in *OUT, and decode the base64 encoded
data stored in IN of size INLEN to the *OUT buffer. On return, the
size of the decoded data is stored in *OUTLEN. OUTLEN may be NULL,
if the caller is not interested in the decoded length. *OUT may be
NULL to indicate an out of memory error, in which case *OUTLEN
contains the size of the memory block needed. The function returns
true on successful decoding and memory allocation errors. (Use the
*OUT and *OUTLEN parameters to differentiate between successful
decoding and memory error.) The function returns false if the
input was invalid, in which case *OUT is NULL and *OUTLEN is
undefined. */
bool
base64_decode_alloc_ctx (struct base64_decode_context *ctx,
const char *in, size_t inlen, char **out,
size_t *outlen)
{
/* This may allocate a few bytes too many, depending on input,
but it's not worth the extra CPU time to compute the exact size.
The exact size is 3 * inlen / 4, minus 1 if the input ends
with "=" and minus another 1 if the input ends with "==".
Dividing before multiplying avoids the possibility of overflow. */
size_t needlen = 3 * (inlen / 4) + 2;
*out = malloc (needlen);
if (!*out)
return true;
if (!base64_decode_ctx (ctx, in, inlen, *out, &needlen))
{
free (*out);
*out = NULL;
return false;
}
if (outlen)
*outlen = needlen;
return true;
}

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base64.h
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/* -*- buffer-read-only: t -*- vi: set ro: */
/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
/* base64.h -- Encode binary data using printable characters.
Copyright (C) 2004, 2005, 2006, 2009, 2010 Free Software Foundation, Inc.
Written by Simon Josefsson.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* Define to the equivalent of the C99 'restrict' keyword, or to
* nothing if this is not supported. Do not define if restrict is
* supported directly. */
#define restrict __restrict
/* Work around a bug in Sun C++: it does not support _Restrict or
* __restrict__, even though the corresponding Sun C compiler ends up with
* "#define restrict _Restrict" or "#define restrict __restrict__" in the
* previous line. Perhaps some future version of Sun C++ will work with
* restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
#if defined __SUNPRO_CC && !defined __RESTRICT
# define _Restrict
# define __restrict__
#endif
#ifndef BASE64_H
# define BASE64_H
/* Get size_t. */
# include <stddef.h>
/* Get bool. */
# include <stdbool.h>
/* This uses that the expression (n+(k-1))/k means the smallest
integer >= n/k, i.e., the ceiling of n/k. */
# define BASE64_LENGTH(inlen) ((((inlen) + 2) / 3) * 4)
struct base64_decode_context
{
unsigned int i;
char buf[4];
};
extern bool isbase64 (char ch);
extern void base64_encode (const char *restrict in, size_t inlen,
char *restrict out, size_t outlen);
extern size_t base64_encode_alloc (const char *in, size_t inlen, char **out);
extern void base64_decode_ctx_init (struct base64_decode_context *ctx);
extern bool base64_decode_ctx (struct base64_decode_context *ctx,
const char *restrict in, size_t inlen,
char *restrict out, size_t *outlen);
extern bool base64_decode_alloc_ctx (struct base64_decode_context *ctx,
const char *in, size_t inlen,
char **out, size_t *outlen);
#define base64_decode(in, inlen, out, outlen) \
base64_decode_ctx (NULL, in, inlen, out, outlen)
#define base64_decode_alloc(in, inlen, out, outlen) \
base64_decode_alloc_ctx (NULL, in, inlen, out, outlen)
#endif /* BASE64_H */

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bigpoint_cclass.c
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#include "bigpoint_cclass.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <json/json.h>
void *
new(const void * _class, ...)
{
const struct BIGPOINT_CCLASS * class = _class;
void * object = calloc(1, class->size);
* (const struct BIGPOINT_CCLASS **) object = class;
if (class->__construct) {
va_list params;
va_start(params, _class);
class->__construct(object, &params);
va_end(params);
}
return object;
}
void *
newFromJson(const void * _class, struct json_object * json)
{
const struct BIGPOINT_CCLASS * class = _class;
void * object = calloc(1, class->size);
* (const struct BIGPOINT_CCLASS **) object = class;
if (class->__jsonConst && json) {
class->__jsonConst(object, json);
}
return object;
}
void
delete(void * _object)
{
const struct BIGPOINT_CCLASS ** class = _object;
if (_object && *class && (*class)->__destruct) {
(*class)->__destruct(_object);
}
free(_object);
}
struct json_object *
toJson(void * _object)
{
const struct BIGPOINT_CCLASS ** class = _object;
if (_object && *class && (*class)->__toJson) {
return (*class)->__toJson(_object);
}
return NULL;
}
// vim: set et ts=4 sw=4:

33
bigpoint_cclass.h
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#ifndef __BIGPOINT_CCLASS_H__
#define __BIGPOINT_CCLASS_H__
#include <stdarg.h>
#include <sys/types.h>
#include <json/json.h>
typedef void (* ctor)(void*, va_list*);
typedef void (* dtor)(void*);
struct BIGPOINT_CCLASS {
size_t size;
void (* __construct)(void * _this, va_list * params);
void (* __jsonConst)(void * _this, struct json_object * json);
void (* __destruct)(void * _this);
struct json_object * (* __toJson)(void * _this);
};
void *
new(const void * _class, ...);
void *
newFromJson(const void * _class, struct json_object * json);
void
delete(void * _object);
struct json_object *
toJson(void * _object);
#endif//__BIGPOINT_CCLASS_H__
// vim: set et ts=4 sw=4:

168
bigpoint_crypt.c
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#include <stdarg.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <mcrypt.h>
#include <mhash.h>
#include "bigpoint_crypt.h"
static
void
__construct(struct BIGPOINT_CRYPT * _this, va_list * params)
{
_this->algorithm = va_arg(* params, const char * const);
_this->mode = va_arg(* params, const char * const);
_this->mcrypt = mcrypt_module_open(
(char *)_this->algorithm,
NULL,
(char *)_this->mode,
NULL);
_this->ivsize = mcrypt_enc_get_iv_size(_this->mcrypt);
_this->keysize = mcrypt_enc_get_key_size(_this->mcrypt);
}
static
void
__destruct(struct BIGPOINT_CRYPT * _this)
{
if (_this->iv) {
free(_this->iv);
}
mcrypt_module_close(_this->mcrypt);
}
static const
struct BIGPOINT_CCLASS _bigpoint_crypt = {
sizeof(struct BIGPOINT_CRYPT),
(ctor)__construct,
NULL,
(dtor)__destruct,
NULL
};
const struct BIGPOINT_CCLASS * const BIGPOINT_CRYPT = &_bigpoint_crypt;
static
void
mcrypt_close(MCRYPT * mcrypt)
{
mcrypt_free(*mcrypt);
*mcrypt = NULL;
}
void *
bigpoint_crypt_createIv(struct BIGPOINT_CRYPT * _this)
{
int urandom;
size_t rsize = 0;
void * iv = NULL;
iv = calloc(_this->ivsize, sizeof(char));
urandom = open("/dev/urandom", O_RDONLY);
rsize = read(urandom, iv, _this->ivsize);
if (_this->ivsize != rsize) {
free(iv);
iv = NULL;
}
return iv;
}
static
void *
createKey(struct BIGPOINT_CRYPT * _this, const char * const password)
{
void * key = NULL;
key = calloc(_this->keysize, sizeof(char));
mhash_keygen(
KEYGEN_MCRYPT,
MHASH_SHA256,
mhash_keygen_count(),
key,
_this->keysize,
NULL,
0,
(char *)password, // @TODO: bad karma...now this might change password.
strlen(password));
return key;
}
void *
bigpoint_crypt_encrypt(
struct BIGPOINT_CRYPT * _this,
const void * const data,
const char * const password,
size_t * length)
{
char * encrypted;
void * iv;
void * key;
key = createKey(_this, password);
if(_this->iv) {
iv = _this->iv;
} else {
iv = bigpoint_crypt_createIv(_this);
}
mcrypt_generic_init(_this->mcrypt, key, _this->keysize, iv);
encrypted = calloc(_this->ivsize + *length, sizeof(char));
memcpy(encrypted, iv, _this->ivsize);
memcpy(encrypted + _this->ivsize, data, *length);
mcrypt_generic(_this->mcrypt, encrypted + _this->ivsize, *length);
mcrypt_generic_deinit(_this->mcrypt);
*length += _this->ivsize;
free(key);
if (_this->iv != iv) {
free(iv);
}
return encrypted;
}
void *
bigpoint_crypt_decrypt(
struct BIGPOINT_CRYPT * _this,
const void * const data,
const char * const password,
size_t * length)
{
char * decrypted;
void * iv;
void * key;
key = createKey(_this, password);
iv = calloc(_this->ivsize, sizeof(char));
memcpy(iv, data, _this->ivsize);
mcrypt_generic_init(_this->mcrypt, key, _this->keysize, iv);
*length -= _this->ivsize;
decrypted = calloc(*length, sizeof(char));
memcpy(decrypted, data + _this->ivsize, *length);
mdecrypt_generic(_this->mcrypt, decrypted, *length);
mcrypt_generic_deinit(_this->mcrypt);
free(key);
free(iv);
return decrypted;
}
// vim: set et ts=4 sw=4:

49
bigpoint_crypt.h
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#ifndef __BIGPOINT_CRYPT_H__
#define __BIGPOINT_CRYPT_H__
#include <sys/types.h>
#include "bigpoint_cclass.h"
struct BIGPOINT_CRYPT {
const struct BIGPOINT_CCLASS * const class;
const char * algorithm;
const char * mode;
MCRYPT mcrypt;
size_t ivsize;
size_t keysize;
void * iv;
};
extern const struct BIGPOINT_CCLASS * const BIGPOINT_CRYPT;
void * bigpoint_crypt_encrypt(
struct BIGPOINT_CRYPT * _this,
const void * const data,
const char * const password,
size_t * length);
void * bigpoint_crypt_decrypt(
struct BIGPOINT_CRYPT * _this,
const void * const data,
const char * const password,
size_t * length);
void * bigpoint_crypt_createIv(
struct BIGPOINT_CRYPT * _this);
void bigpoint_crypt_setIv(
struct BIGPOINT_CRYPT * _this,
const void * const iv);
void bigpoint_crypt_setIvsize(
struct BIGPOINT_CRYPT * _this,
const size_t size);
void bigpoint_crypt_setKeysize(
struct BIGPOINT_CRYPT * _this,
const size_t size);
#endif//__BIGPOINT_CRYPT_H__
// vim: set et ts=4 sw=4:

62
bigpoint_dyntype.c
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#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <json/json.h>
#include "bigpoint_dyntype.h"
static
void
__construct(struct BIGPOINT_DYNTYPE * _this, va_list * params)
{
_this->type = va_arg(* params, enum BIGPOINT_DYNTYPE_TYPES);
_this->size = va_arg(* params, size_t);
_this->data = calloc(_this->size, sizeof(char));
memcpy(_this->data, va_arg(* params, void *), _this->size);
}
static
void
__destruct(struct BIGPOINT_DYNTYPE * _this)
{
if (_this && _this->data) {
free(_this->data);
}
}
static
struct json_object *
__toJson(struct BIGPOINT_DYNTYPE * _this)
{
struct json_object * json = NULL;
/**
* @TODO: make a smart implementation here base on the type of the
* actual object.
*/
return json;
}
static
void
__jsonConst(struct BIGPOINT_DYNTYPE * _this, struct json_object * json)
{
/**
* @TODO: initialize by json....
*/
}
static const
struct BIGPOINT_CCLASS _bigpoint_dyntype = {
sizeof(struct BIGPOINT_DYNTYPE),
(ctor)__construct,
__jsonConst,
(dtor)__destruct,
__toJson
};
const struct BIGPOINT_CCLASS * const BIGPOINT_DYNTYPE = &_bigpoint_dyntype;
// vim: set et ts=4 sw=4:

30
bigpoint_dyntype.h
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#ifndef __BIGPOINT_DYNTYPE_H__
#define __BIGPOINT_DYNTYPE_H__
#include <sys/types.h>
#include "bigpoint_cclass.h"
enum BIGPOINT_DYNTYPE_TYPES {
BIGPOINT_DYNTYPE_BOOLEAN = 0,
BIGPOINT_DYNTYPE_INT,
BIGPOINT_DYNTYPE_FLOAT,
BIGPOINT_DYNTYPE_STRING,
BIGPOINT_DYNTYPE_ARRAY,
BIGPOINT_DYNTYPE_OBJECT
};
struct BIGPOINT_DYNTYPE {
const struct BIGPOINT_CCLASS * const class;
enum BIGPOINT_DYNTYPE_TYPES type;
size_t size;
void * data;
};
extern const struct BIGPOINT_CCLASS * const BIGPOINT_DYNTYPE;
#endif//__BIGPOINT_DYNTYPE_H__
// vim: set et ts=4 sw=4:

102
bigpoint_packet.c
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#include <json/json.h>
#include "bigpoint_container_packet.h"
static
void
__construct(struct BIGPOINT_PACKET * _this, va_list * params)
{
bigpoint_container_packet_set_default_content(_this);
}
static
void
__jsonConst(struct BIGPOINT_PACKET * _this, struct json_object * json)
{
struct json_object * header = NULL;
struct json_object * data = NULL;
if (! json_type_array == json_object_get_type(json)) {
bigpoint_packet_set_default_content(_this);
return;
}
header = json_object_array_get_idx(json, 0);
data = json_object_array_get_idx(json, 1);
if (! (header && data)) {
bigpoint_packet_set_default_content(_this);
return;
}
bigpoint_packet_setHeader(_this, newFromJson(BIGPOINT_DYNTYPE, header));
bigpoint_packet_setData(_this, newFromJson(BIGPOINT_DYNTYPE, data));
}
static
void
__destruct(struct BIGPOINT_PACKET * _this)
{
}
static
struct json_object *
__toJson(struct BIGPOINT_PACKET * _this)
{
struct json_object * json = json_object_new_array();
json_object_array_add(json, toJson(bigpoint_packet_getHeader(_this)));
json_object_array_add(json, toJson(bigpoint_packet_getData(_this)));
return json;
}
static const
struct BIGPOINT_CLASS _bigpoint_packet = {
sizeof(struct BIGPOINT_PACKET),
(ctor)__construct,
__jsonConst,
(dtor)__destruct,
__toJson
};
const struct BIGPOINT_CCLASS * const BIGPOINT_PACKET = &_bigpoint_packet;
void *
bigpoint_packet_getHeader(
struct BIGPOINT_PACKET * _this)
{
return _this->content[BIGPOINT_PACKET_HEADER];
}
void *
bigpoint_packet_getData(
struct BIGPOINT_PACKET * _this)
{
return _this->content[BIGPOINT_PACKET_DATA];
}
void bigpoint_packet_setHeader(
struct BIGPOINT_PACKET * _this,
struct BIGPOINT_DYNTYPE * header)
{
_this->content[BIGPOINT_PACKET_HEADER] = header;
}
void bigpoint_packet_setData(
struct BIGPOINT_PACKET * _this,
struct BIGPOINT_DYNTYPE * data)
{
_this->content[BIGPOINT_PACKET_DATA] = data;
}
void
bigpoint_container_packet_set_default_content(
struct BIGPOINT_PACKET * _this)
{
_this->content[BIGPOINT_PACKET_HEADER] = NULL;
_this->content[BIGPOINT_PACKET_DATA] = NULL;
}
// vim: set et ts=4 sw=4:

39
bigpoint_packet.h
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@ -0,0 +1,39 @@
#ifndef __BIGPOINT_PACKET_H__
#define __BIGPOINT_PACKET_H__
#include "bigpoint_cclass.h"
#include "bigpoint_dyntype.h"
enum BIGPOINT_PACKET_CONTENT_KEYS {
BIGPOINT_PACKET_HEADER = 0,
BIGPOINT_PACKET_DATA
};
struct BIGPOINT_PACKET {
const struct BIGPOINT_CCLASS * const class;
struct BIGPOINT_DYNTYPE * content[2];
};
extern const struct BIGPOINT_CCLASS * const BIGPOINT_PACKET;
void * bigpoint_packet_getHeader(
struct BIGPOINT_PACKET * _this);
void * bigpoint_packet_getData(
struct BIGPOINT_PACKET * _this);
void bigpoint_packet_setHeader(
struct BIGPOINT_PACKET * _this,
struct BIGPOINT_DYNTYPE * header);
void bigpoint_packet_setData(
struct BIGPOINT_PACKET * _this,
struct BIGPOINT_DYNTYPE * data);
void bigpoint_packet_set_default_content(
struct BIGPOINT_PACKET * _this);
#endif//__BIGPOINT_PACKET_H__
// vim: set et ts=4 sw=4:

11
bigpoint_token_cryptdec.c
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#include "bigpoint_token_cryptdec"
static
void
__construct(struct BIGPOINT_TOKEN_CRYPTDEC * _this, va_list * params)
{
_this->containerFactory = va_arg(* params, struct BIGPOINT_CONTANER_FACTORY *);
_this->crypt = va_arg(* params, struct BIGPOINT_CRYPT *);
}
// vim: set et ts=4 sw=4:

17
bigpoint_token_cryptdec.h
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@ -0,0 +1,17 @@
#ifndef __BIGPOINT_TOKEN_CRPYTDEC_H__
#define __BIGPOINT_TOKEN_CRPYTDEC_H__
#include "bigpoint_cclass.h"
struct BIGPOINT_TOKEN_CRYPTDEC {
const struct BIGPOINT_CCLASS * const class;
struct BIGPOINT_CONTAINTER_FACTORY * containerFactory;
struct BIGPOINT_CRYPT * crypt;
}
extern const struct BIGPOINT_CCLASS * const BIGPOINT_TOKEN_CRYPTDEC;
#endif//__BIGPOINT_TOKEN_CRPYTDEC_H__
// vim: set et ts=4 sw=4:

40
test.c
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@ -0,0 +1,40 @@
#include <mcrypt.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include "bigpoint_cclass.h"
#include "bigpoint_crypt.h"
#include "base64.h"
int
main(int argc, char * argv[])
{
char b64d[] = "J4rYV+oJ9+EzoyLy/o8aolRSw51DzDhTyeht/tcdUA6hNNxaVFrW/FXVTfWXzkZgW1oc1D2vwkfQ80PD+iWzcw";
char pass[] = "1234";
char * data = NULL;
char * decrypted = NULL;
size_t length = strlen(b64d);
struct BIGPOINT_CRYPT * crypt = NULL;
data = calloc(length, sizeof(char));
base64_decode(b64d, length, data, &length);
data = realloc(data, length + 1);
data[length] = '\0';
crypt = new(BIGPOINT_CRYPT, MCRYPT_RIJNDAEL_256, MCRYPT_CFB);
decrypted = bigpoint_crypt_decrypt(crypt, data, pass, &length);
delete(crypt);
free(data);
printf("%s\n", decrypted);
free(decrypted);
return 0;
}
// vim: set et ts=4 sw=4:

40
test2.c
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@ -0,0 +1,40 @@
#include <mcrypt.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include "bigpoint_cclass.h"
#include "bigpoint_crypt.h"
#include "base64.h"
int
main(int argc, char * argv[])
{
char data[] = "ein weiterer test";
char pass[] = "1234";
char * b64d = NULL;
char * encrypted = NULL;
size_t length = strlen(data);
struct BIGPOINT_CRYPT * crypt = NULL;
crypt = new(BIGPOINT_CRYPT, MCRYPT_RIJNDAEL_256, MCRYPT_CFB);
encrypted = bigpoint_crypt_encrypt(crypt, data, pass, &length);
delete(crypt);
b64d = calloc(BASE64_LENGTH(length), sizeof(char));
base64_encode(encrypted, length, b64d, BASE64_LENGTH(length));
free(encrypted);
b64d = realloc(b64d, BASE64_LENGTH(length) + 1);
b64d[BASE64_LENGTH(length)] = '\0';
printf("%s\n", b64d);
free(b64d);
return 0;
}
// vim: set et ts=4 sw=4:

41
test3.c
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@ -0,0 +1,41 @@
#include <stdio.h>
#include <string.h>
#include "bigpoint_cclass.h"
#include "bigpoint_dyntype.h"
int
main(int argc, char * argv[])
{
char string[] = "ein weiterer test";
int integer = 42;
float floating = 4.3;
char * rstring = NULL;
long rint = 0;
double rfloat = 0.0;
struct BIGPOINT_DYNTYPE * dynstring =
new(BIGPOINT_DYNTYPE, BIGPOINT_DYNTYPE_STRING, strlen(string) + 1, string);
struct BIGPOINT_DYNTYPE * dynint =
new(BIGPOINT_DYNTYPE, BIGPOINT_DYNTYPE_INT, sizeof(long), (long)integer);
struct BIGPOINT_DYNTYPE * dynfloat =
new(BIGPOINT_DYNTYPE, BIGPOINT_DYNTYPE_FLOAT, sizeof(double), (double)floating);
bigpoint_dyntype_get(dynstring, rstring);
bigpoint_dyntype_get(dynint, rint);
bigpoint_dyntype_get(dynfloat, rfloat);
printf("%s\n", rstring);
printf("%ld\n", rint);
printf("%lf\n", rfloat);
delete(dynstring);
delete(dynint);
delete(dynfloat);
return 0;
}
// vim: set et ts=4 sw=4:
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