[age_restriction] progress 13/n

- major refactoring of extensions
  - extensions live now in a separate library, libtalerextensions
  - refactored all components using age_restriction accordingly
  - plumbing for plugin support for extensions roughly layed down

3 files changed, 0 insertions, 220 deletions

diff --git a/src/util/Makefile.am b/src/util/Makefile.am
index 55ebb4dff..35e580347 100644
--- a/src/util/Makefile.am
+++ b/src/util/Makefile.am
@@ -72,8 +72,6 @@ libtalerutil_la_SOURCES = \
   crypto_wire.c \
   denom.c \
   exchange_signatures.c \
-  extensions.c \
-  extension_age_restriction.c \
   getopt.c \
   lang.c \
   iban.c \
diff --git a/src/util/extension_age_restriction.c b/src/util/extension_age_restriction.c
deleted file mode 100644
index 0b04c7d7b..000000000
--- a/src/util/extension_age_restriction.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
-   This file is part of TALER
-   Copyright (C) 2014-2020 Taler Systems SA
-
-   TALER 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.
-
-   TALER 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
-   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-/**
- * @file extension_age_restriction.c
- * @brief Utility functions regarding age restriction
- * @author Özgür Kesim
- */
-#include "platform.h"
-#include "taler_util.h"
-#include "taler_extensions.h"
-#include "stdint.h"
-
-/**
- *
- * @param cfg Handle to the GNUNET configuration
- * @param[out] Mask for age restriction. Will be 0 if age restriction was not enabled in the config.
- * @return Error if extension for age restriction was set, but age groups were
- *         invalid, OK otherwise.
- */
-enum GNUNET_GenericReturnValue
-TALER_get_age_mask (const struct GNUNET_CONFIGURATION_Handle *cfg,
-                    struct TALER_AgeMask *mask)
-{
-  char *groups;
-  enum GNUNET_GenericReturnValue ret = GNUNET_SYSERR;
-
-  if ((GNUNET_YES != GNUNET_CONFIGURATION_have_value (cfg,
-                                                      TALER_EXTENSION_SECTION_AGE_RESTRICTION,
-                                                      "ENABLED")) ||
-      (GNUNET_YES != GNUNET_CONFIGURATION_get_value_yesno (cfg,
-                                                           TALER_EXTENSION_SECTION_AGE_RESTRICTION,
-                                                           "ENABLED")))
-  {
-    /* Age restriction is not enabled */
-    mask->mask = 0;
-    return GNUNET_OK;
-  }
-
-  /* Age restriction is enabled, extract age groups */
-  if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg,
-                                                          TALER_EXTENSION_SECTION_AGE_RESTRICTION,
-                                                          "AGE_GROUPS",
-                                                          &groups))
-  {
-    /* FIXME: log error? */
-    return GNUNET_SYSERR;
-  }
-  if (groups == NULL)
-  {
-    /* No groups defined in config, return default_age_mask */
-    mask->mask = TALER_EXTENSION_DEFAULT_AGE_MASK;
-    return GNUNET_OK;
-  }
-
-  ret = TALER_parse_age_group_string (groups, mask);
-  GNUNET_free (groups);
-  return ret;
-}
-
-
-/**
- * @param groups String representation of the age groups. Must be of the form
- *  a:b:...:n:m
- * with
- *  0 < a < b <...< n < m < 32
- * @param[out] mask Bit representation of the age groups.
- * @return Error if string was invalid, OK otherwise.
- */
-enum GNUNET_GenericReturnValue
-TALER_parse_age_group_string (const char *groups,
-                              struct TALER_AgeMask *mask)
-{
-
-  const char *pos = groups;
-  unsigned int prev = 0;
-  unsigned int val = 0;
-  char c;
-
-  while (*pos)
-  {
-    c = *pos++;
-    if (':' == c)
-    {
-      if (prev >= val)
-        return GNUNET_SYSERR;
-
-      mask->mask |= 1 << val;
-      prev = val;
-      val = 0;
-      continue;
-    }
-
-    if ('0'>c || '9'<c)
-      return GNUNET_SYSERR;
-
-    val = 10 * val + c - '0';
-
-    if (0>=val || 32<=val)
-      return GNUNET_SYSERR;
-  }
-
-  if (0>val || 32<=val || prev>=val)
-    return GNUNET_SYSERR;
-
-  mask->mask |= (1 << val);
-  mask->mask |= 1; // mark zeroth group, too
-
-  return GNUNET_OK;
-}
-
-
-/**
- * Encodes the age mask into a string, like "8:10:12:14:16:18:21"
- *
- * @param mask Age mask
- * @return String representation of the age mask, allocated by GNUNET_malloc.
- *         Can be used as value in the TALER config.
- */
-char *
-TALER_age_mask_to_string (const struct TALER_AgeMask *m)
-{
-  uint32_t mask = m->mask;
-  unsigned int n = 0;
-  char *buf = GNUNET_malloc (32 * 3); // max characters possible
-  char *pos = buf;
-
-  if (NULL == buf)
-  {
-    return buf;
-  }
-
-  while (mask != 0)
-  {
-    mask >>= 1;
-    n++;
-    if (0 == (mask & 1))
-    {
-      continue;
-    }
-
-    if (n > 9)
-    {
-      *(pos++) = '0' + n / 10;
-    }
-    *(pos++) = '0' + n % 10;
-
-    if (0 != (mask >> 1))
-    {
-      *(pos++) = ':';
-    }
-  }
-  return buf;
-}
-
-
-/* end of extension_age_restriction.c */
diff --git a/src/util/extensions.c b/src/util/extensions.c
deleted file mode 100644
index 87dd16b4d..000000000
--- a/src/util/extensions.c
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
-   This file is part of TALER
-   Copyright (C) 2014-2021 Taler Systems SA
-
-   TALER 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.
-
-   TALER 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
-   TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
- */
-/**
- * @file extensions.c
- * @brief Utility functions for extensions
- * @author Özgür Kesim
- */
-#include "platform.h"
-#include "taler_util.h"
-#include "taler_extensions.h"
-#include "stdint.h"
-
-enum GNUNET_GenericReturnValue
-TALER_extension_get_by_name (const char *name,
-                             const struct TALER_Extension **extensions,
-                             const struct TALER_Extension **ext)
-{
-
-  const struct TALER_Extension *it = *extensions;
-
-  for (; NULL != it; it++)
-  {
-    if (0 == strncmp (name,
-                      it->name,
-                      strlen (it->name)))
-    {
-      *ext = it;
-      return GNUNET_OK;
-    }
-  }
-
-  return GNUNET_NO;
-}
-
-
-/* end of extensions.c */