new files
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@885 ec53bebd-3082-4978-b11e-865c3cabbd6b
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205
appl/otp/otp.c
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205
appl/otp/otp.c
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#include "otp_locl.h"
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RCSID("$Id$");
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char *prog;
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static void
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usage ()
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{
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fprintf(stderr,
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"Usage: %s [-h] [-r] [-s] [-n count] [-f alg] num seed\n",
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prog);
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exit (1);
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}
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static void
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strlwr (char *s)
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{
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while(*s) {
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*s = tolower(*s);
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s++;
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}
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}
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static int
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renew (int argc, char **argv, int count, OtpAlgorithm *alg, int hexp)
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{
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struct passwd *pwd;
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OtpContext oldctx, newctx, *ctx;
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char *user;
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char prompt[128];
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char pw[64];
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void *dbm;
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int ret;
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if (argc != 2)
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usage();
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pwd = getpwuid (getuid ());
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if (pwd == NULL) {
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fprintf(stderr, "%s: You don't exist\n", prog);
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return 1;
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}
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user = pwd->pw_name;
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ctx = &oldctx;
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if(otp_challenge (ctx, user, prompt, sizeof(prompt)))
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return 1;
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des_read_pw_string (pw, sizeof(pw), prompt, 0);
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ret = otp_verify_user_1 (ctx, pw);
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if (ret == 0) {
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newctx.alg = alg;
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newctx.user = user;
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newctx.n = atoi (argv[0]);
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strncpy (newctx.seed, argv[1], sizeof(newctx.seed));
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newctx.seed[sizeof(newctx.seed) - 1] = '\0';
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strlwr(newctx.seed);
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sprintf (prompt, "[ otp-%s %u %s ]",
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newctx.alg->name,
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newctx.n,
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newctx.seed);
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des_read_pw_string (pw, sizeof(pw), prompt, 0);
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if (otp_parse (newctx.key, pw, alg) == 0) {
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ctx = &newctx;
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}
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}
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dbm = otp_db_open ();
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if (dbm == NULL) {
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fprintf (stderr, "%s: otp_db_open failed\n", prog);
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free (user);
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return 1;
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}
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otp_put (dbm, ctx);
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otp_db_close (dbm);
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free (user);
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return ret;
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}
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static int
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set (int argc, char **argv, int count, OtpAlgorithm *alg, int hexp)
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{
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void *db;
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OtpContext ctx;
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struct passwd *pwd;
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char pw[OTP_MAX_PASSPHRASE + 1];
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int ret;
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int i;
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if (argc != 2)
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usage();
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pwd = getpwuid (getuid ());
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if (pwd == NULL) {
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fprintf(stderr, "%s: You don't exist\n", prog);
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return 1;
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}
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ctx.alg = alg;
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ctx.user = strdup (pwd->pw_name);
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ctx.n = atoi (argv[0]);
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strncpy (ctx.seed, argv[1], sizeof(ctx.seed));
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ctx.seed[sizeof(ctx.seed) - 1] = '\0';
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strlwr(ctx.seed);
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do {
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des_read_pw_string (pw, sizeof(pw), "Pass-phrase", 1);
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if (strlen (pw) < OTP_MIN_PASSPHRASE)
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printf ("Too short pass-phrase. Use at least %d characters\n",
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OTP_MIN_PASSPHRASE);
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} while(strlen(pw) < OTP_MIN_PASSPHRASE);
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ctx.alg->init (ctx.key, pw, ctx.seed);
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for (i = 0; i < ctx.n; ++i)
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ctx.alg->next (ctx.key);
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db = otp_db_open ();
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if(db == NULL) {
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fprintf (stderr, "%s: otp_db_open failed\n", prog);
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free (ctx.user);
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return 1;
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}
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ret = otp_put (db, &ctx);
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otp_db_close (db);
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free (ctx.user);
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return ret;
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}
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int
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print (int argc, char **argv, int count, OtpAlgorithm *alg, int hexp)
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{
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char pw[64];
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OtpKey key;
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int n;
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int i;
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char *seed;
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if (argc != 2)
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usage ();
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n = atoi(argv[0]);
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seed = argv[1];
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des_read_pw_string (pw, sizeof(pw), "Password: ", 0);
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alg->init (key, pw, seed);
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for (i = 0; i < n; ++i) {
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char s[30];
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alg->next (key);
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if (i >= n - count) {
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if (hexp)
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otp_print_hex (key, s);
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else
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otp_print_stddict (key, s);
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printf ("%d: %s\n", i + 1, s);
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}
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}
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return 0;
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}
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int
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main (int argc, char **argv)
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{
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int c;
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int count = 10;
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int setp = 0;
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int hexp = 0;
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int renewp = 0;
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OtpAlgorithm *alg = otp_find_alg ("md4");
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prog = argv[0];
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while ((c = getopt (argc, argv, "rshn:f:")) != EOF)
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switch (c) {
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case 'r' :
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renewp = 1;
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break;
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case 'n' :
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count = atoi (optarg);
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break;
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case 'h' :
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hexp = 1;
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break;
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case 's' :
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setp = 1;
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break;
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case 'f' :
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alg = otp_find_alg (optarg);
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if (alg == NULL) {
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fprintf (stderr, "%s: Unknown algorithm: %s\n", prog, optarg);
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return 1;
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}
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break;
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default :
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usage ();
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break;
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}
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if (setp && renewp) {
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fprintf (stderr, "%s: `-r' and `-s' incompatible\n", prog);
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return 1;
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}
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argc -= optind;
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argv += optind;
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if (setp)
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return set (argc, argv, count, alg, hexp);
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else if (renewp)
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return renew (argc, argv, count, alg, hexp);
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else
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return print (argc, argv, count, alg, hexp);
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}
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