diff options
Diffstat (limited to 'src/util/pin.c')
-rw-r--r-- | src/util/pin.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/src/util/pin.c b/src/util/pin.c new file mode 100644 index 0000000..0285bb0 --- /dev/null +++ b/src/util/pin.c @@ -0,0 +1,84 @@ +/* + This file is part of GNU Anastasis. + Copyright (C) 2021 Anastasis SARL + + Anastasis is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3, or (at your + option) any later version. + + Anastasis is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Anastasis; see the file COPYING. If not, write to the + Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +/** + * @file anastasis/src/util/pin.c + * @brief pin conversion functions + * @author Christian Grothoff + */ +#include "platform.h" +#include "anastasis_util_lib.h" + + +bool +ANASTASIS_scan_pin (const char *as, + unsigned long long *pin) +{ + char dummy; + char s[16]; + + if ( (NULL != as) && + (0 == strncasecmp ("A-", as, 2)) ) + as += 2; /* skip "A-" prefix if present */ + if (strlen (as) != 18) + return false; + if ( ('-' != as[5]) || + ('-' != as[9]) || + ('-' != as[14]) ) + return false; + GNUNET_snprintf (s, + sizeof (s), + "%.5s%.3s%.4s%.3s", + as, + &as[6], + &as[10], + &as[15]); + if (1 != sscanf (s, + "%llu%c", + pin, + &dummy)) + { + GNUNET_break (0); + return false; + } + return true; +} + + +const char * +ANASTASIS_pin2s (uint64_t pin) +{ + static char buf[22]; + char tmp[16]; + + GNUNET_assert (pin < ANASTASIS_PIN_MAX_VALUE); + GNUNET_snprintf (tmp, + sizeof (tmp), + "%015llu", + (unsigned long long) pin); + GNUNET_snprintf (buf, + sizeof (buf), + "A-%.5s-%.3s-%.4s-%.3s", + tmp, + &tmp[5], + &tmp[8], + &tmp[12]); + return buf; +} |