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@@ -8,6 +8,12 @@
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*/
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*/
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#include "tomcrypt.h"
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#include "tomcrypt.h"
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+#if _POSIX_C_SOURCE >= 200112L
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+#include <libgen.h>
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+#else
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+#define basename(x) x
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+#endif
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+
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/**
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/**
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@file demo_crypt_constants.c
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@file demo_crypt_constants.c
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@@ -17,33 +23,61 @@
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Larry Bugbee, February 2013
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Larry Bugbee, February 2013
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*/
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*/
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+static void _print_line(const char* cmd, const char* desc)
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+{
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+ printf(" %-16s - %s\n", cmd, desc);
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+}
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-int main(void) {
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- /* given a specific constant name, get and print its value */
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- char name[] = "CTR_COUNTER_BIG_ENDIAN";
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- int value;
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- char *names_list;
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- unsigned int names_list_len;
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+int main(int argc, char **argv)
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+{
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+ if (argc == 1) {
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+ /* given a specific constant name, get and print its value */
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+ char name[] = "CTR_COUNTER_BIG_ENDIAN";
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+ int value;
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+ char *names_list;
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+ unsigned int names_list_len;
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- if (crypt_get_constant(name, &value) != 0)
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- exit(EXIT_FAILURE);
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- printf("\n %s is %d \n\n", name, value);
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+ if (crypt_get_constant(name, &value) != 0) exit(EXIT_FAILURE);
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+ printf("\n %s is %d \n\n", name, value);
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- /* get and print the length of the names (and values) list */
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+ /* get and print the length of the names (and values) list */
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- if (crypt_list_all_constants(NULL, &names_list_len) != 0)
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- exit(EXIT_FAILURE);
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- printf(" need to allocate %u bytes \n\n", names_list_len);
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+ if (crypt_list_all_constants(NULL, &names_list_len) != 0) exit(EXIT_FAILURE);
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+ printf(" need to allocate %u bytes \n\n", names_list_len);
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- /* get and print the names (and values) list */
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- if ((names_list = malloc(names_list_len)) == NULL)
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- exit(EXIT_FAILURE);
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- if (crypt_list_all_constants(names_list, &names_list_len) != 0)
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- exit(EXIT_FAILURE);
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- printf(" supported constants:\n\n%s\n\n", names_list);
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- free(names_list);
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+ /* get and print the names (and values) list */
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+ if ((names_list = malloc(names_list_len)) == NULL) exit(EXIT_FAILURE);
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+ if (crypt_list_all_constants(names_list, &names_list_len) != 0) exit(EXIT_FAILURE);
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+ printf(" supported constants:\n\n%s\n\n", names_list);
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+ free(names_list);
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+ } else if (argc == 2) {
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+ if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0) {
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+ char* base = strdup(basename(argv[0]));
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+ printf("Usage: %s [-a] [-s name]\n\n", base);
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+ _print_line("<no argument>", "The old behavior of the demo");
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+ _print_line("-a", "Only lists all constants");
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+ _print_line("-s name", "List a single constant given as argument");
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+ _print_line("-h", "The help you're looking at");
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+ free(base);
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+ } else if (strcmp(argv[1], "-a") == 0) {
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+ char *names_list;
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+ unsigned int names_list_len;
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+ /* get and print the length of the names (and values) list */
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+ if (crypt_list_all_constants(NULL, &names_list_len) != 0) exit(EXIT_FAILURE);
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+ /* get and print the names (and values) list */
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+ names_list = malloc(names_list_len);
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+ if (crypt_list_all_constants(names_list, &names_list_len) != 0) exit(EXIT_FAILURE);
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+ printf("%s\n", names_list);
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+ }
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+ } else if (argc == 3) {
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+ if (strcmp(argv[1], "-s") == 0) {
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+ int value;
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+ if (crypt_get_constant(argv[2], &value) != 0) exit(EXIT_FAILURE);
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+ printf("%s,%u\n", argv[2], value);
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+ }
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+ }
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- return 0;
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+ return 0;
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}
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}
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