mirror of
https://github.com/libtom/libtomcrypt
synced 2026-08-25 20:26:07 -04:00
76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis */
|
|
/* SPDX-License-Identifier: Unlicense */
|
|
|
|
#define _POSIX_C_SOURCE 200809L /* otherwise PATH_MAX + strdup are not defined for build with -std=c99 */
|
|
#include "tomcrypt.h"
|
|
|
|
#include <string.h>
|
|
#define basename(path) ( strrchr((path), '/') ? strrchr((path), '/') + 1 : strrchr((path), '\\') ? strrchr((path), '\\') + 1 : (path) )
|
|
|
|
/**
|
|
@file demo_crypt_constants.c
|
|
|
|
Demo how to get various constants to dynamic languages
|
|
like Python
|
|
|
|
Larry Bugbee, February 2013
|
|
*/
|
|
|
|
static void s_print_line(const char* cmd, const char* desc)
|
|
{
|
|
printf(" %-16s - %s\n", cmd, desc);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
if (argc == 1) {
|
|
/* given a specific constant name, get and print its value */
|
|
char name[] = "CTR_COUNTER_BIG_ENDIAN";
|
|
int value;
|
|
char *names_list;
|
|
unsigned int names_list_len;
|
|
|
|
if (crypt_get_constant(name, &value) != 0) exit(EXIT_FAILURE);
|
|
printf("\n %s is %d \n\n", name, value);
|
|
|
|
/* get and print the length of the names (and values) list */
|
|
|
|
if (crypt_list_all_constants(NULL, &names_list_len) != 0) exit(EXIT_FAILURE);
|
|
printf(" need to allocate %u bytes \n\n", names_list_len);
|
|
|
|
/* get and print the names (and values) list */
|
|
if ((names_list = malloc(names_list_len)) == NULL) exit(EXIT_FAILURE);
|
|
if (crypt_list_all_constants(names_list, &names_list_len) != 0) exit(EXIT_FAILURE);
|
|
printf(" supported constants:\n\n%s\n\n", names_list);
|
|
free(names_list);
|
|
} else if (argc == 2) {
|
|
if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0) {
|
|
char* base = strdup(basename(argv[0]));
|
|
printf("Usage: %s [-a] [-s name]\n\n", base);
|
|
s_print_line("<no argument>", "The old behavior of the demo");
|
|
s_print_line("-a", "Only lists all constants");
|
|
s_print_line("-s name", "List a single constant given as argument");
|
|
s_print_line("-h", "The help you're looking at");
|
|
free(base);
|
|
} else if (strcmp(argv[1], "-a") == 0) {
|
|
char *names_list;
|
|
unsigned int names_list_len;
|
|
/* get and print the length of the names (and values) list */
|
|
if (crypt_list_all_constants(NULL, &names_list_len) != 0) exit(EXIT_FAILURE);
|
|
/* get and print the names (and values) list */
|
|
if ((names_list = malloc(names_list_len)) == NULL) exit(EXIT_FAILURE);
|
|
if (crypt_list_all_constants(names_list, &names_list_len) != 0) exit(EXIT_FAILURE);
|
|
printf("%s\n", names_list);
|
|
free(names_list);
|
|
}
|
|
} else if (argc == 3) {
|
|
if (strcmp(argv[1], "-s") == 0) {
|
|
int value;
|
|
if (crypt_get_constant(argv[2], &value) != 0) exit(EXIT_FAILURE);
|
|
printf("%s,%u\n", argv[2], value);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|