/usr/share/doc/libisds-dev/examples/authenticatemessage.c is in libisds-dev 0.10.7-1build3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | #define _XOPEN_SOURCE 500
#include <stdlib.h>
#include <stdio.h>
#include <locale.h>
#include <time.h>
#include <string.h>
#include <isds.h>
#include "common.h"
#include <libgen.h>
int main(int argc, char **argv) {
struct isds_ctx *ctx = NULL;
isds_error err;
setlocale(LC_ALL, "");
if (argc != 2 || !argv[1] || !*argv[1]) {
printf("Usage: %s CMS_SIGNED_MESSAGE_IN_LOCAL_FILE\n",
basename(argv[0]));
exit(EXIT_FAILURE);
}
err = isds_init();
if (err) {
printf("isds_init() failed: %s\n", isds_strerror(err));
exit(EXIT_FAILURE);
}
isds_set_logging(ILF_ALL & ~ILF_HTTP, ILL_ALL);
ctx = isds_ctx_create();
if (!ctx) {
printf("isds_ctx_create() failed");
}
err = isds_set_timeout(ctx, 10000);
if (err) {
printf("isds_set_timeout() failed: %s\n", isds_strerror(err));
}
err = isds_login(ctx, url, username(), password(), NULL, NULL);
if (err) {
printf("isds_login() failed: %s: %s\n", isds_strerror(err),
isds_long_message(ctx));
} else {
printf("Logged in :)\n");
}
{
/* Authenticate message saved in local file */
int fd;
void *buffer;
size_t length;
if (mmap_file(argv[1], &fd, &buffer, &length))
exit(EXIT_FAILURE);
printf("Sending message from file `%s' to ISDS for authenticity "
"check...\n", argv[1]);
err = isds_authenticate_message(ctx, buffer, length);
if (!err)
printf("ISDS states: message is original\n");
else if (err == IE_NOTEQUAL)
printf("ISDS states: message is unkown or tampered\n");
else
printf("isds_authenticate_message() failed: %s: %s\n",
isds_strerror(err), isds_long_message(ctx));
munmap_file(fd, buffer,length);
}
err = isds_logout(ctx);
if (err) {
printf("isds_logout() failed: %s\n", isds_strerror(err));
}
err = isds_ctx_free(&ctx);
if (err) {
printf("isds_ctx_free() failed: %s\n", isds_strerror(err));
}
err = isds_cleanup();
if (err) {
printf("isds_cleanup() failed: %s\n", isds_strerror(err));
}
exit (EXIT_SUCCESS);
}
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