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annotate libtomcrypt/demos/sizes.c @ 1787:ce3ce75a6e04

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Fix null pointer dereference removing listeners
author Matt Johnston <matt@ucc.asn.au>
date Mon, 07 Dec 2020 20:03:24 +0800
parents e9dba7abd939
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1471
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9
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10 #include "tomcrypt.h"
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11
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12 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE >= 200112L
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13 #include <libgen.h>
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14 #else
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15 #define basename(x) x
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16 #endif
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17 /**
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18 @file demo_crypt_sizes.c
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19
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20 Demo how to get various sizes to dynamic languages
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21 like Python - Larry Bugbee, February 2013
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22 */
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23
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24 static void _print_line(const char* cmd, const char* desc)
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25 {
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26 printf(" %-16s - %s\n", cmd, desc);
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27 }
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28
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29 int main(int argc, char **argv)
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30 {
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31 if (argc == 1) {
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32 /* given a specific size name, get and print its size */
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33 char name[] = "ltc_hash_descriptor";
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34 unsigned int size;
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35 char *sizes_list;
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36 unsigned int sizes_list_len;
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37 if (crypt_get_size(name, &size) != 0) exit(EXIT_FAILURE);
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38 printf("\n size of '%s' is %u \n\n", name, size);
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39
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40 /* get and print the length of the names (and sizes) list */
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41 if (crypt_list_all_sizes(NULL, &sizes_list_len) != 0) exit(EXIT_FAILURE);
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42 printf(" need to allocate %u bytes \n\n", sizes_list_len);
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43
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44 /* get and print the names (and sizes) list */
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45 if ((sizes_list = malloc(sizes_list_len)) == NULL) exit(EXIT_FAILURE);
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46 if (crypt_list_all_sizes(sizes_list, &sizes_list_len) != 0) exit(EXIT_FAILURE);
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47 printf(" supported sizes:\n\n%s\n\n", sizes_list);
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48 free(sizes_list);
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49 } else if (argc == 2) {
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50 if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0) {
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51 char* base = strdup(basename(argv[0]));
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52 printf("Usage: %s [-a] [-s name]\n\n", base);
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53 _print_line("<no argument>", "The old behavior of the demo");
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54 _print_line("-a", "Only lists all sizes");
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55 _print_line("-s name", "List a single size given as argument");
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56 _print_line("-h", "The help you're looking at");
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57 free(base);
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58 } else if (strcmp(argv[1], "-a") == 0) {
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59 char *sizes_list;
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60 unsigned int sizes_list_len;
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61 /* get and print the length of the names (and sizes) list */
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62 if (crypt_list_all_sizes(NULL, &sizes_list_len) != 0) exit(EXIT_FAILURE);
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63 /* get and print the names (and sizes) list */
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64 if ((sizes_list = malloc(sizes_list_len)) == NULL) exit(EXIT_FAILURE);
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65 if (crypt_list_all_sizes(sizes_list, &sizes_list_len) != 0) exit(EXIT_FAILURE);
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66 printf("%s\n", sizes_list);
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67 free(sizes_list);
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68 }
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69 } else if (argc == 3) {
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70 if (strcmp(argv[1], "-s") == 0) {
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71 unsigned int size;
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72 if (crypt_get_size(argv[2], &size) != 0) exit(EXIT_FAILURE);
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73 printf("%s,%u\n", argv[2], size);
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74 }
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75 }
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76 return 0;
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77 }
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78
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79 /* ref: $Format:%D$ */
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80 /* git commit: $Format:%H$ */
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81 /* commit time: $Format:%ai$ */