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Dmitry Baryshkov
nettle
Commits
435e8626
Commit
435e8626
authored
Apr 14, 2012
by
Niels Möller
Browse files
New base64dec example program, based on code contributed by Jeronimo Pellegrini.
parent
2bc57dbe
Changes
2
Hide whitespace changes
Inline
Side-by-side
examples/Makefile.in
View file @
435e8626
...
...
@@ -17,12 +17,12 @@ RSA_TARGETS = rsa-keygen$(EXEEXT) rsa-sign$(EXEEXT) \
rsa-verify
$(EXEEXT)
rsa-encrypt
$(EXEEXT)
rsa-decrypt
$(EXEEXT)
TARGETS
=
nettle-benchmark
$(EXEEXT)
eratosthenes
$(EXEEXT)
\
base64enc
$(EXEEXT)
@IF_HOGWEED@
$(RSA_TARGETS)
next-prime
$(EXEEXT)
random-prime
$(EXEEXT)
base64enc
$(EXEEXT)
base64dec
$(EXEEXT)
@IF_HOGWEED@
$(RSA_TARGETS)
next-prime
$(EXEEXT)
random-prime
$(EXEEXT)
SOURCES
=
nettle-benchmark.c eratosthenes.c next-prime.c random-prime.c
\
nettle-openssl.c
\
io.c read_rsa_key.c
\
rsa-encrypt.c rsa-decrypt.c rsa-keygen.c rsa-sign.c rsa-verify.c
\
base64enc.c
base64enc.c
base64dec.c
GETOPT_OBJS
=
../getopt.
$(OBJEXT)
../getopt1.
$(OBJEXT)
...
...
@@ -74,6 +74,10 @@ base64enc$(EXEEXT): base64enc.$(OBJEXT) io.$(OBJEXT)
$(LINK)
base64enc.
$(OBJEXT)
io.
$(OBJEXT)
\
-lnettle
$(LIBS)
-o
base64enc
$(EXEEXT)
base64dec$(EXEEXT)
:
base64dec.$(OBJEXT) io.$(OBJEXT)
$(LINK)
base64dec.
$(OBJEXT)
io.
$(OBJEXT)
\
-lnettle
$(LIBS)
-o
base64dec
$(EXEEXT)
eratosthenes$(EXEEXT)
:
eratosthenes.$(OBJEXT) $(GETOPT_OBJS)
$(LINK)
eratosthenes.
$(OBJEXT)
$(GETOPT_OBJS)
-o
eratosthenes
$(EXEEXT)
...
...
examples/base64dec.c
0 → 100644
View file @
435e8626
/* base64dec -- an decoder for base64
*
* Copyright (C) 2006, 2012 Jeronimo Pellegrini, Niels Möller
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include
<errno.h>
#include
<stdlib.h>
#include
<stdio.h>
#include
<string.h>
#include
<nettle/base64.h>
#include
"io.h"
#define CHUNK_SIZE 16392
/* The maximum number of bytes generated for each chunk: */
#define DECODED_SIZE BASE64_DECODE_LENGTH(CHUNK_SIZE)
/*
* Reads base-64 encoded from stdin, writes decoded to stdout.
*/
int
main
(
int
argc
UNUSED
,
char
**
argv
UNUSED
)
{
/* "buffer" will hold the bytes from disk: */
uint8_t
*
buffer
=
xalloc
(
CHUNK_SIZE
);
/* "result" will hold bytes before output: */
uint8_t
*
result
=
xalloc
(
DECODED_SIZE
);
/* We need a Base64 context for decoding: */
struct
base64_decode_ctx
b64_ctx
;
/* Init the context: */
base64_decode_init
(
&
b64_ctx
);
#ifdef WIN32
_setmode
(
1
,
O_BINARY
);
#endif
for
(;;)
{
int
nbytes
;
/* Number of bytes read frmo disk at each iteration */
unsigned
decoded_bytes
;
/* Bytes actually generated at each iteration */
nbytes
=
fread
(
buffer
,
1
,
CHUNK_SIZE
,
stdin
);
if
(
nbytes
<
CHUNK_SIZE
&&
ferror
(
stdin
))
{
werror
(
"Error reading file: %s
\n
"
,
strerror
(
errno
));
return
EXIT_FAILURE
;
}
decoded_bytes
=
BASE64_DECODE_LENGTH
(
nbytes
);
/* Decodes one chunk: */
if
(
!
base64_decode_update
(
&
b64_ctx
,
&
decoded_bytes
,
result
,
nbytes
,
buffer
))
{
werror
(
"Error decoding input (not base64?)
\n
"
);
return
EXIT_FAILURE
;
}
if
(
!
write_string
(
stdout
,
decoded_bytes
,
result
))
{
werror
(
"Error writing file: %s
\n
"
,
strerror
(
errno
));
return
EXIT_FAILURE
;
}
if
(
nbytes
<
CHUNK_SIZE
)
{
/* Check if decoding finalized OK: */
if
(
!
base64_decode_final
(
&
b64_ctx
))
{
werror
(
"Decoding did not finish properly.
\n
"
);
return
EXIT_FAILURE
;
}
break
;
}
}
if
(
fflush
(
stdout
)
!=
0
)
{
werror
(
"Error writing file: %s
\n
"
,
strerror
(
errno
));
return
EXIT_FAILURE
;
}
free
(
buffer
);
free
(
result
);
return
EXIT_SUCCESS
;
}
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