GNUnet 0.22.0
Functions
gnunet-base32.c File Reference

tool to encode/decode from/to the Crockford Base32 encoding GNUnet uses More...

#include "platform.h"
#include "gnunet_util_lib.h"
Include dependency graph for gnunet-base32.c:

Go to the source code of this file.

Functions

int main (int argc, char *const *argv)
 The main function of gnunet-base32. More...
 

Detailed Description

tool to encode/decode from/to the Crockford Base32 encoding GNUnet uses

Author
Christian Grothoff

Definition in file gnunet-base32.c.

Function Documentation

◆ main()

int main ( int  argc,
char *const *  argv 
)

The main function of gnunet-base32.

Parameters
argcnumber of arguments from the command line
argvcommand line arguments
Returns
0 ok, 1 on error

Definition at line 39 of file gnunet-base32.c.

41{
42 int decode = 0;
43 const struct GNUNET_GETOPT_CommandLineOption options[] = {
44 GNUNET_GETOPT_option_flag ('d',
45 "decode",
46 gettext_noop (
47 "run decoder modus, otherwise runs as encoder"),
48 &decode),
49 GNUNET_GETOPT_option_help ("Crockford base32 encoder/decoder"),
50 GNUNET_GETOPT_option_version (PACKAGE_VERSION),
51 GNUNET_GETOPT_OPTION_END
52 };
53 int ret;
54 char *in;
55 unsigned int in_size;
56 ssize_t iret;
57 char *out;
58 size_t out_size;
59
60 if (GNUNET_OK !=
61 GNUNET_STRINGS_get_utf8_args (argc, argv,
62 &argc, &argv))
63 return 2;
64 ret = GNUNET_GETOPT_run ("gnunet-base32",
65 options,
66 argc,
67 argv);
68 if (ret < 0)
69 return 1;
70 if (0 == ret)
71 return 0;
72 in_size = 0;
73 in = NULL;
74 iret = 1;
75 while (iret > 0)
76 {
77 /* read in blocks of 4k */
78 char buf[4092];
79
80 iret = read (0,
81 buf,
82 sizeof (buf));
83 if (iret < 0)
84 {
85 GNUNET_free (in);
86 return 2;
87 }
88 if (iret > 0)
89 {
90 if (iret + in_size < in_size)
91 {
92 GNUNET_break (0);
93 GNUNET_free (in);
94 return 1;
95 }
96 GNUNET_array_grow (in,
97 in_size,
98 in_size + iret);
99 memcpy (&in[in_size - iret],
100 buf,
101 iret);
102 }
103 }
104 if (decode)
105 {
106 /* This formula can overestimate by 1 byte, so we try both
107 out_size and out_size-1 below */
108 out_size = in_size * 5 / 8;
109 out = GNUNET_malloc (out_size);
110 if ( (GNUNET_OK !=
111 GNUNET_STRINGS_string_to_data (in,
112 in_size,
113 out,
114 out_size)) &&
115 (out_size > 0) )
116 {
117 out_size--;
118 if (GNUNET_OK !=
119 GNUNET_STRINGS_string_to_data (in,
120 in_size,
121 out,
122 out_size))
123 {
124 GNUNET_free (out);
125 GNUNET_free (in);
126 return 3;
127 }
128 }
129 }
130 else
131 {
132 out = GNUNET_STRINGS_data_to_string_alloc (in,
133 in_size);
134 out_size = strlen (out);
135 }
136 {
137 size_t pos = 0;
138
139 while (pos < out_size)
140 {
141 iret = write (1,
142 &out[pos],
143 out_size - pos);
144 if (iret <= 0)
145 return 4;
146 pos += iret;
147 }
148 }
149 GNUNET_free (out);
150 GNUNET_free_nz ((void *) argv);
151 return 0;
152}
GNUNET_GETOPT_OPTION_END
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_OPTION_END
Definition: 002.c:13
options
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
gettext_noop
#define gettext_noop(String)
Definition: gettext.h:74
ret
static int ret
Final status code.
Definition: gnunet-arm.c:93
GNUNET_GETOPT_run
int GNUNET_GETOPT_run(const char *binaryOptions, const struct GNUNET_GETOPT_CommandLineOption *allOptions, unsigned int argc, char *const *argv)
Parse the command line.
Definition: getopt.c:884
GNUNET_GETOPT_option_help
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_help(const char *about)
Defining the option to print the command line help text (-h option).
Definition: getopt_helpers.c:192
GNUNET_GETOPT_option_flag
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_flag(char shortName, const char *name, const char *description, int *val)
Allow user to specify a flag (which internally means setting an integer to 1/GNUNET_YES/GNUNET_OK.
Definition: getopt_helpers.c:303
GNUNET_GETOPT_option_version
struct GNUNET_GETOPT_CommandLineOption GNUNET_GETOPT_option_version(const char *version)
Define the option to print the version of the application (-v option)
Definition: getopt_helpers.c:58
GNUNET_OK
@ GNUNET_OK
Definition: gnunet_common.h:111
GNUNET_break
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
Definition: gnunet_common.h:1064
GNUNET_array_grow
#define GNUNET_array_grow(arr, size, tsize)
Grow a well-typed (!) array.
Definition: gnunet_common.h:1524
GNUNET_malloc
#define GNUNET_malloc(size)
Wrapper around malloc.
Definition: gnunet_common.h:1400
GNUNET_free
#define GNUNET_free(ptr)
Wrapper around free.
Definition: gnunet_common.h:1460
GNUNET_free_nz
#define GNUNET_free_nz(ptr)
Wrapper around free.
Definition: gnunet_common.h:1446
GNUNET_STRINGS_data_to_string_alloc
char * GNUNET_STRINGS_data_to_string_alloc(const void *buf, size_t size)
Return the base32crockford encoding of the given buffer.
Definition: strings.c:764
GNUNET_STRINGS_string_to_data
enum GNUNET_GenericReturnValue GNUNET_STRINGS_string_to_data(const char *enc, size_t enclen, void *out, size_t out_size)
Convert CrockfordBase32 encoding back to data.
Definition: strings.c:789
GNUNET_STRINGS_get_utf8_args
enum GNUNET_GenericReturnValue GNUNET_STRINGS_get_utf8_args(int argc, char *const *argv, int *u8argc, char *const **u8argv)
Returns utf-8 encoded arguments.
Definition: strings.c:1230
GNUNET_GETOPT_CommandLineOption
Definition of a command line option.
Definition: gnunet_getopt_lib.h:110

References gettext_noop, GNUNET_array_grow, GNUNET_break, GNUNET_free, GNUNET_free_nz, GNUNET_GETOPT_OPTION_END, GNUNET_GETOPT_option_flag(), GNUNET_GETOPT_option_help(), GNUNET_GETOPT_option_version(), GNUNET_GETOPT_run(), GNUNET_malloc, GNUNET_OK, GNUNET_STRINGS_data_to_string_alloc(), GNUNET_STRINGS_get_utf8_args(), GNUNET_STRINGS_string_to_data(), options, and ret.

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