Line data Source code
1 : /* genhashdata.c - Create data for hash tests
2 : * Copyright (C) 2013 g10 Code GmbH
3 : *
4 : * This file is part of Libgcrypt.
5 : *
6 : * Libgcrypt is free software; you can redistribute it and/or modify
7 : * it under the terms of the GNU Lesser General Public License as
8 : * published by the Free Software Foundation; either version 2.1 of
9 : * the License, or (at your option) any later version.
10 : *
11 : * Libgcrypt is distributed in the hope that it will be useful,
12 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : * GNU Lesser General Public License for more details.
15 : *
16 : * You should have received a copy of the GNU Lesser General Public
17 : * License along with this program; if not, see <http://www.gnu.org/licenses/>.
18 : */
19 :
20 : /* Results:
21 :
22 : $ for i in -64 -1 0 1 64; do ./genhashdata --gigs 256 --bytes $i|sha1sum;done
23 : 92fc51850c7b750e6e774b75f294f6979d4059f0 -
24 : 4bddeeb4c08683f02d4944d93dbcb02ebab50134 -
25 : 71b923afde1c8c040884c723a2e3335b333e64c6 -
26 : 2d99f9b5b86e9c9c937104f4242bd6b8bc0927ef -
27 : a60dabe8d749f798b7ec3a684cc3eab487451482 -
28 :
29 : $ for i in -64 -1 0 1 64; do ./genhashdata --gigs 256 --bytes $i|sha224sum;done
30 : b5672b54d2480a5688a2dc727a1ad4db7a81ef31ce8999e0bbaeffdc -
31 : 814ea7159473e6ffc1c64b90026a542e13ac6980f7f3ca3c4582a9b8 -
32 : 9ec0e1829455db8650ec7a8b06912196f97a7358bc3a73c79911cd4e -
33 : e578d5d523320876565bbbc892511a485427caee6dd754d57e3e58c2 -
34 : ff0464df248cd298b63765bc4f87f21e25c93c657fdf3656d3c878e5 -
35 :
36 : $ for i in -64 -1 0 1 64; do ./genhashdata --gigs 256 --bytes $i|sha256sum;done
37 : 87a9828d3de78d55d252341db2a622908c4e0ceaee9961ecf9768700fc799ec8 -
38 : 823bf95f64ef04a4a77579c38760b1d401b56bf3a8e664bdf56ca15afb468a03 -
39 : 2d0723878cb2c3d5c59dfad910cdb857f4430a6ba2a7d687938d7a20e63dde47 -
40 : 5a2e21b1e79cd866acf53a2a18ca76bd4e02c4b01bf4627354171824c812d95f -
41 : 34444808af8e9d995e67f9e155ed94bf55f195a51dc1d8a989e6bcf95511c8a2 -
42 :
43 :
44 : $ for i in -64 -1 0 1 64; do ./genhashdata --gigs 256 --bytes $i|sha512sum;done
45 : e01bf8140874bf240e8426cb2bcbc377cbed2e6037334116637149e1cd8cd462 \
46 : 96828b71f32b9f002771d4cb51172ce578b73b7939221e4df655ecd08601e655 -
47 : 4917ff94514b1757705c289fdc3e7d6ffcce5771b20ae237ebc03d2ec9eb435f \
48 : b7ce9f0e27272be8cced77a5edae1a01a0ad62b0a44169d88bbee45474a17734 -
49 : 1e28e8b3c79f2f47da11f3c0b7da4e7981e7d932db6d17d528a31e191922edda \
50 : 8fc4bb2df10ea876232db5a1c606bc41886e8b2c570a3e721221f60c8c7dc4ab -
51 : 027d3324dd1cf127770ceb53681f4c70937c9bca4e3acd5fd76cb266c7d4527d \
52 : 58140290a1822e8d60c4d3ae9725fb923183230d6dfd2d7d73c0d74a4757f34a -
53 : 49920704ea9d6ee19f0742d6c868110fa3eda8ac09f026e9ef22cc731af53020 \
54 : de40eedef66cb1afd94c61e285fa9327e01336e804903740a9145ab1f065c2d5 -
55 :
56 : */
57 :
58 : #include <stdarg.h>
59 : #include <stdio.h>
60 : #include <stdlib.h>
61 : #include <string.h>
62 : #include <errno.h>
63 :
64 : #define PGM "genhashdata"
65 :
66 : static void
67 0 : die (const char *format, ...)
68 : {
69 : va_list arg_ptr ;
70 :
71 0 : fflush (stdout);
72 0 : fprintf (stderr, "%s: ", PGM);
73 0 : va_start (arg_ptr, format ) ;
74 0 : vfprintf (stderr, format, arg_ptr );
75 0 : va_end(arg_ptr);
76 0 : if (*format && format[strlen(format)-1] != '\n')
77 0 : putc ('\n', stderr);
78 0 : exit (1);
79 : }
80 :
81 : int
82 0 : main (int argc, char **argv)
83 : {
84 0 : int last_argc = -1;
85 0 : int gigs = 0;
86 0 : int bytes = 0;
87 : char pattern[1024];
88 : int i, g;
89 :
90 0 : if (argc)
91 0 : { argc--; argv++; }
92 :
93 0 : while (argc && last_argc != argc )
94 : {
95 0 : last_argc = argc;
96 0 : if (!strcmp (*argv, "--"))
97 : {
98 0 : argc--; argv++;
99 0 : break;
100 : }
101 0 : else if (!strcmp (*argv, "--help"))
102 : {
103 0 : fputs ("usage: " PGM " [options]\n"
104 : "Options:\n"
105 : " --gigs N Emit N GiB of test bytes\n"
106 : " --bytes DIFF Stop DIFF bytes earlier or later\n",
107 : stdout);
108 0 : exit (0);
109 : }
110 0 : else if (!strcmp (*argv, "--gigs"))
111 : {
112 0 : argc--; argv++;
113 0 : if (argc)
114 : {
115 0 : gigs = atoi (*argv);
116 0 : argc--; argv++;
117 : }
118 : }
119 0 : else if (!strcmp (*argv, "--bytes"))
120 : {
121 0 : argc--; argv++;
122 0 : if (argc)
123 : {
124 0 : bytes = atoi (*argv);
125 0 : argc--; argv++;
126 : }
127 : }
128 0 : else if (!strncmp (*argv, "--", 2))
129 0 : die ("unknown option '%s'", *argv);
130 : }
131 :
132 0 : if (gigs < 0 || gigs > 1024*1024)
133 0 : die ("value for --gigs must be in the range 0 to %d", 1024*1024);
134 0 : if (bytes < -1024 || bytes > 1024)
135 0 : die ("value for --bytes must be in the range -1024 to 1024");
136 : if (sizeof pattern != 1024)
137 : die ("internal error");
138 :
139 0 : if (argc > 1)
140 0 : die ("arguments are not expected");
141 :
142 0 : memset (pattern, 'a', sizeof pattern);
143 :
144 0 : for (g=0; g < gigs; g++)
145 : {
146 0 : if (g + 1 == gigs && bytes < 0)
147 : {
148 0 : for (i = 0; i < 1024*1023; i++)
149 0 : if (fwrite (pattern, sizeof pattern, 1, stdout) != 1)
150 0 : die ("writing to stdout failed: %s", strerror (errno));
151 0 : for (i = 0; i < 1023; i++)
152 0 : if (fwrite (pattern, sizeof pattern, 1, stdout) != 1)
153 0 : die ("writing to stdout failed: %s", strerror (errno));
154 0 : if (fwrite (pattern, sizeof pattern + bytes, 1, stdout) != 1)
155 0 : die ("writing to stdout failed: %s", strerror (errno));
156 : }
157 : else
158 : {
159 0 : for (i = 0; i < 1024*1024; i++)
160 0 : if (fwrite (pattern, sizeof pattern, 1, stdout) != 1)
161 0 : die ("writing to stdout failed: %s", strerror (errno));
162 : }
163 : }
164 0 : if (bytes > 0)
165 0 : if (fwrite (pattern, bytes, 1, stdout) != 1)
166 0 : die ("writing to stdout failed: %s", strerror (errno));
167 0 : if (fflush (stdout))
168 0 : die ("writing to stdout failed: %s", strerror (errno));
169 :
170 0 : return 0;
171 : }
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