fixing #4386: use more sane configuration and data file structure

.gitignore

@@ -31,8 +31,10 @@ src/lib/test_exchange_api
 doc/doxygen/doxygen_sqlite3.db
 src/bank-lib/test_bank_api
 src/exchange-lib/test_exchange_api
+src/exchange-lib/test_exchange_api_home/.local/share/taler/exchange/live-keys/
 src/exchange/taler-exchange-aggregator
 src/exchange/test_taler_exchange_aggregator-postgres
+src/exchange/test_taler_exchange_httpd_home/.local/share/taler/exchange/live-keys/
 src/exchange-tools/taler-auditor-sign
 src/exchange-tools/taler-exchange-dbinit
 src/exchange-tools/taler-exchange-keycheck

doc/taler.conf.5

@@ -1,14 +1,14 @@
-.TH TALER.CONF 5 "Aug 11, 2015" "GNU Taler"
+.TH TALER.CONF 5 "Apr 11, 2016" "GNU Taler"
 
 .SH NAME
 taler.conf \- Taler configuration file.
 
 .SH SYNOPSIS
-.B DIRNAME/taler.conf
+.B taler.conf
 
 .SH DESCRIPTION
 
-The basic structure of the configuration file is the following.  The file is split into sections.  Every section begins with "[SECTIONNAME]" and contains a number of options of the form "OPTION=VALUE".  Empty lines and lines beginning with a "#" are treated as comments.
+The basic structure of the configuration file is the following.  The file is split into sections.  Every section begins with "[SECTIONNAME]" and contains a number of options of the form "OPTION=VALUE".  Empty lines and lines beginning with a "#" are treated as comments.  Files containing default values for many of the options described below are installed under \$TALER\_PREFIX/share/taler/config.d/. The configuration file given with \-c to Taler binaries overrides these defaults.
 
 .SH EXCHANGE OPTIONS
 

src/exchange-lib/Makefile.am

@@ -61,5 +61,6 @@ test_exchange_api_LDADD = \
   -ljansson
 
 EXTRA_DIST = \
-  test-exchange-home/config/exchange-common.conf \
+  test_taler_exchange_api_home/.local/share/taler/exchange/offline-keys/master.priv \
-  test-exchange-home/master.priv
+  test_taler_exchange_api_home/.config/taler/sepa.json \
+  test_taler_exchange_api.conf

src/exchange-lib/test-exchange-home/config/exchange-common.conf

@@ -1,41 +0,0 @@
-[exchange]
-# Currency supported by the exchange (can only be one)
-CURRENCY = EUR
-
-# Wire format supported by the exchange
-# We use 'test' for testing of the actual
-# coin operations, and 'sepa' to test SEPA-specific routines.
-WIREFORMAT = test sepa
-
-# HTTP port the exchange listens to
-PORT = 8081
-
-# Master public key used to sign the exchange's various keys
-MASTER_PUBLIC_KEY = 98NJW3CQHZQGQXTY3K85K531XKPAPAVV4Q5V8PYYRR00NJGZWNVG
-
-# How to access our database
-DB = postgres
-
-# Is this is a testcase, use transient DB actions?
-TESTRUN = YES
-
-[exchangedb-postgres]
-DB_CONN_STR = "postgres:///talercheck"
-
-[wire-incoming-sepa]
-SEPA_RESPONSE_FILE = "test-exchange-home/sepa.json"
-
-[wire-incoming-sepa]
-SEPA_RESPONSE_FILE = "test-exchange-home/sepa.json"
-
-[wire-incoming-test]
-# What is the main website of the bank?
-BANK_URI = "http://localhost/"
-# Into which account at the 'bank' should (incoming) wire transfers be made?
-BANK_ACCOUNT_NUMBER = 2
-
-[wire-outgoing-test]
-# What is the main website of the bank?
-BANK_URI = "http://localhost/"
-# Into which account at the 'bank' should (incoming) wire transfers be made?
-BANK_ACCOUNT_NUMBER = 2

src/exchange-lib/test_exchange_api.c

@@ -2539,13 +2539,15 @@ main (int argc,
   GNUNET_log_setup ("test-exchange-api",
                     "WARNING",
                     NULL);
+  /* These might get in the way... */
+  unsetenv ("XDG_DATA_HOME");
+  unsetenv ("XDG_CONFIG_HOME");
   proc = GNUNET_OS_start_process (GNUNET_NO,
                                   GNUNET_OS_INHERIT_STD_ALL,
                                   NULL, NULL, NULL,
                                   "taler-exchange-keyup",
                                   "taler-exchange-keyup",
-                                  "-d", "test-exchange-home",
+                                  "-c", "test_exchange_api.conf",
-                                  "-m", "test-exchange-home/master.priv",
                                   NULL);
   GNUNET_OS_process_wait (proc);
   GNUNET_OS_process_destroy (proc);
@@ -2554,7 +2556,7 @@ main (int argc,
                                        NULL, NULL, NULL,
                                        "taler-exchange-httpd",
                                        "taler-exchange-httpd",
-                                       "-d", "test-exchange-home",
+                                       "-c", "test_exchange_api.conf",
                                        NULL);
   /* give child time to start and bind against the socket */
   fprintf (stderr, "Waiting for taler-exchange-httpd to be ready");

src/exchange-lib/test_exchange_api.conf

@@ -1,24 +1,45 @@
-[exchange_keys]
+# This file is in the public domain.
+#
+[PATHS]
+# Persistant data storage for the testcase
+TALER_TEST_HOME = test_exchange_api_home/
 
-# how long is one signkey valid?
+[exchange]
-signkey_duration = 4 weeks
+# Currency supported by the exchange (can only be one)
+CURRENCY = EUR
 
-# how long are the signatures with the signkey valid?
+# Wire format supported by the exchange
-legal_duration = 2 years
+# We use 'test' for testing of the actual
+# coin operations, and 'sepa' to test SEPA-specific routines.
+WIREFORMAT = test sepa
 
-# how long do we generate denomination and signing keys
+# HTTP port the exchange listens to
-# ahead of time?
+PORT = 8081
-lookahead_sign = 32 weeks 1 day
 
-# how long do we provide to clients denomination and signing keys
+# Master public key used to sign the exchange's various keys
-# ahead of time?
+MASTER_PUBLIC_KEY = 98NJW3CQHZQGQXTY3K85K531XKPAPAVV4Q5V8PYYRR00NJGZWNVG
-lookahead_provide = 4 weeks 1 day
 
+# How to access our database
+DB = postgres
+
+# Is this is a testcase, use transient DB actions?
+TESTRUN = YES
+
+[exchangedb-postgres]
+DB_CONN_STR = "postgres:///talercheck"
+
+[wire-incoming-test]
+# What is the main website of the bank?
+BANK_URI = "http://localhost/"
+# Into which account at the 'bank' should (incoming) wire transfers be made?
+BANK_ACCOUNT_NUMBER = 2
+
+[wire-outgoing-test]
+# What is the main website of the bank?
+BANK_URI = "http://localhost/"
+# Into which account at the 'bank' should (incoming) wire transfers be made?
+BANK_ACCOUNT_NUMBER = 2
 
-# Coin definitions are detected because the section
-# name begins with "coin_".  The rest of the
-# name is free, but of course following the convention
-# of "coin_$CURRENCY[_$SUBUNIT]_$VALUE" make sense.
 [coin_eur_ct_1]
 value = EUR:0.01
 duration_overlap = 5 minutes
@@ -73,14 +94,3 @@ fee_withdraw = EUR:0.01
 fee_deposit = EUR:0.01
 fee_refresh = EUR:0.03
 rsa_keysize = 1024
-
-[coin_eur_1000]
-value = EUR:1000
-duration_overlap = 5 minutes
-duration_withdraw = 7 days
-duration_spend = 2 years
-duration_legal = 3 years
-fee_withdraw = EUR:0.01
-fee_deposit = EUR:0.01
-fee_refresh = EUR:0.03
-rsa_keysize = 2048

src/exchange-tools/Makefile.am

@@ -1,6 +1,14 @@
 # This Makefile.am is in the public domain
 AM_CPPFLAGS = -I$(top_srcdir)/src/include
 
+pkgcfgdir = $(prefix)/share/taler/config.d/
+
+pkgcfg_DATA = \
+  auditor.conf \
+  exchange-signkeys.conf \
+  coins.conf
+
+
 if USE_COVERAGE
   AM_CFLAGS = --coverage -O0
   XLIB = -lgcov
@@ -81,3 +89,7 @@ taler_exchange_dbinit_CPPFLAGS = \
   -I$(top_srcdir)/src/include \
   -I$(top_srcdir)/src/pq/ \
   $(POSTGRESQL_CPPFLAGS)
+
+
+EXTRA_DIST = \
+  auditor.conf

src/exchange-tools/auditor.conf

@@ -0,0 +1,12 @@
+# This configuration file is in the public domain
+#
+# It cointains options for the auditor.
+
+[auditor]
+
+# Where do we store the auditor's private key?
+AUDITOR_PRIV_FILE = ${TALER_DATA_HOME}/auditor/offline-keys/auditor.priv
+
+# What is the Web site of the auditor (i.e. to file complaints about
+# a misbehaving exchange)?
+# AUDITOR_URL = https://auditor.taler.net/

src/exchange-tools/coins.conf

@@ -0,0 +1,25 @@
+# This configuration file is in the public domain
+#
+# This is a template file for coin definitions. There are no
+# reasonable defaults, as legal and business concerns influence each
+# value given.
+#
+# Note that while we only give one section here, you can define
+# any number of coins by providing many "coin_" sections.
+#
+# Coin definitions are detected because the section name begins with
+# "coin_".  The rest of the name is free, but of course following the
+# convention of "coin_$CURRENCY[_$SUBUNIT]_$VALUE" make sense.
+#
+# [coin_eur_ct_1]
+
+# All options are mandatory!
+# value = EUR:0.01
+# duration_overlap = 60 minutes
+# duration_withdraw = 7 days
+# duration_spend = 2 years
+# duration_legal = 3 years
+# fee_withdraw = EUR:0.00
+# fee_deposit = EUR:0.00
+# fee_refresh = EUR:0.01
+# rsa_keysize = 1024

src/exchange-tools/exchange-signkeys.conf

@@ -0,0 +1,16 @@
+# General data for signing keys.
+[exchange_keys]
+
+# how long is one signkey valid?
+signkey_duration = 4 weeks
+
+# how long are the signatures with the signkey valid?
+legal_duration = 2 years
+
+# how long do we generate denomination and signing keys
+# ahead of time?
+lookahead_sign = 32 weeks 1 day
+
+# how long do we provide to clients denomination and signing keys
+# ahead of time?
+lookahead_provide = 4 weeks 1 day

src/exchange-tools/taler-auditor-sign.c

@@ -59,6 +59,11 @@ static char *auditor_url;
  */
 static struct TALER_MasterPublicKeyP master_public_key;
 
+/**
+ * Our configuration.
+ */
+static struct GNUNET_CONFIGURATION_Handle *cfg;
+
 
 /**
  * Print denomination key details for diagnostics.
@@ -131,10 +136,12 @@ int
 main (int argc,
       char *const *argv)
 {
-  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+  char *cfgfile = NULL;
-    {'a', "auditor-key", "FILE",
+  const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    {'a', "auditor-key", "FILENAME",
      "file containing the private key of the auditor", 1,
      &GNUNET_GETOPT_set_filename, &auditor_key_file},
+    GNUNET_GETOPT_OPTION_CFG_FILE (&cfgfile),
     GNUNET_GETOPT_OPTION_HELP ("Private key of the auditor to use for signing"),
     {'m', "exchange-key", "KEY",
      "public key of the exchange (Crockford base32 encoded)", 1,
@@ -142,10 +149,10 @@ main (int argc,
     {'u', "auditor-url", "URL",
      "URL of the auditor (informative link for the user)", 1,
      &GNUNET_GETOPT_set_string, &auditor_url},
-    {'r', "exchange-request", "FILE",
+    {'r', "exchange-request", "FILENAME",
      "set of keys the exchange requested the auditor to sign", 1,
      &GNUNET_GETOPT_set_string, &exchange_request_file},
-    {'o', "output", "FILE",
+    {'o', "output", "FILENAME",
      "where to write our signature", 1,
      &GNUNET_GETOPT_set_string, &output_file},
     GNUNET_GETOPT_OPTION_VERSION (VERSION "-" VCS_VERSION),
@@ -163,20 +170,41 @@ main (int argc,
   unsigned int i;
 
   GNUNET_assert (GNUNET_OK ==
-                 GNUNET_log_setup ("taler-exchange-keyup",
+                 GNUNET_log_setup ("taler-auditor-sign",
                                    "WARNING",
                                    NULL));
-  if (GNUNET_GETOPT_run ("taler-exchange-keyup",
+  if (GNUNET_GETOPT_run ("taler-auditor-sign",
                          options,
                          argc, argv) < 0)
     return 1;
-  if (NULL == auditor_key_file)
+  cfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg,
+                                                  cfgfile))
   {
-    fprintf (stderr,
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-             "Auditor key file not given\n");
+                _("Malformed configuration file `%s', exit ...\n"),
+                cfgfile);
+    GNUNET_free_non_null (cfgfile);
     return 1;
   }
-  if (NULL == auditor_url)
+  GNUNET_free_non_null (cfgfile);
+  if ( (NULL == auditor_key_file) &&
+       (GNUNET_OK !=
+        GNUNET_CONFIGURATION_get_value_filename (cfg,
+                                                 "auditor",
+                                                 "AUDITOR_PRIV_FILE",
+                                                 &auditor_key_file)) )
+  {
+    fprintf (stderr,
+             "Auditor key file not given in neither configuration nor command-line\n");
+    return 1;
+  }
+  if ( (NULL == auditor_url) &&
+       (GNUNET_OK !=
+        GNUNET_CONFIGURATION_get_value_string (cfg,
+                                               "auditor",
+                                               "AUDITOR_URL",
+                                               &auditor_url)) )
   {
     fprintf (stderr,
              "Auditor URL not given\n");
@@ -328,6 +356,7 @@ main (int argc,
     GNUNET_free (dks);
     return 1;
   }
+
   GNUNET_free (sigs);
   GNUNET_free (dks);
   GNUNET_free (eddsa_priv);

src/exchange-tools/taler-exchange-dbinit.c

@@ -20,24 +20,8 @@
  */
 #include "platform.h"
 #include <gnunet/gnunet_util_lib.h>
-#include <libpq-fe.h>
 #include "taler_exchangedb_plugin.h"
 
-/**
- * Exchange directory with the keys.
- */
-static char *exchange_base_dir;
-
-/**
- * Our configuration.
- */
-static struct GNUNET_CONFIGURATION_Handle *cfg;
-
-/**
- * Our DB plugin.
- */
-static struct TALER_EXCHANGEDB_Plugin *plugin;
-
 
 /**
  * The main function of the database initialization tool.
@@ -51,14 +35,15 @@ int
 main (int argc,
       char *const *argv)
 {
-  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+  char *cfgfile = NULL;
-    {'d', "exchange-dir", "DIR",
+  const struct GNUNET_GETOPT_CommandLineOption options[] = {
-     "exchange directory", 1,
+    GNUNET_GETOPT_OPTION_CFG_FILE (&cfgfile),
-     &GNUNET_GETOPT_set_filename, &exchange_base_dir},
     GNUNET_GETOPT_OPTION_HELP ("Initialize Taler Exchange database"),
     GNUNET_GETOPT_OPTION_VERSION (VERSION "-" VCS_VERSION),
     GNUNET_GETOPT_OPTION_END
   };
+  struct GNUNET_CONFIGURATION_Handle *cfg;
+  struct TALER_EXCHANGEDB_Plugin *plugin;
 
   if (GNUNET_GETOPT_run ("taler-exchange-dbinit",
                          options,
@@ -69,24 +54,23 @@ main (int argc,
                  GNUNET_log_setup ("taler-exchange-dbinit",
                                    "INFO",
                                    NULL));
-  if (NULL == exchange_base_dir)
+  cfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg,
+                                                  cfgfile))
   {
-    fprintf (stderr,
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-             "Exchange base directory not given.\n");
+                _("Malformed configuration file `%s', exit ...\n"),
-    return 1;
+                cfgfile);
-  }
+    GNUNET_free_non_null (cfgfile);
-  cfg = TALER_config_load (exchange_base_dir);
-  if (NULL == cfg)
-  {
-    fprintf (stderr,
-             "Failed to load exchange configuration.\n");
     return 1;
   }
+  GNUNET_free_non_null (cfgfile);
   if (NULL ==
       (plugin = TALER_EXCHANGEDB_plugin_load (cfg)))
   {
     fprintf (stderr,
              "Failed to initialize database plugin.\n");
+    GNUNET_CONFIGURATION_destroy (cfg);
     return 1;
   }
   if (GNUNET_OK !=
@@ -96,9 +80,11 @@ main (int argc,
     fprintf (stderr,
              "Failed to initialize database.\n");
     TALER_EXCHANGEDB_plugin_unload (plugin);
+    GNUNET_CONFIGURATION_destroy (cfg);
     return 1;
   }
   TALER_EXCHANGEDB_plugin_unload (plugin);
+  GNUNET_CONFIGURATION_destroy (cfg);
   return 0;
 }
 

src/exchange-tools/taler-exchange-keycheck.c

@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2014, 2015 GNUnet e.V.
+  Copyright (C) 2014, 2015, 2016 GNUnet e.V.
 
   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
@@ -104,8 +104,8 @@ static int
 exchange_signkeys_check ()
 {
   if (0 > TALER_EXCHANGEDB_signing_keys_iterate (exchange_directory,
-                                       &signkeys_iter,
+                                                 &signkeys_iter,
-                                       NULL))
+                                                 NULL))
     return GNUNET_NO;
   return GNUNET_OK;
 }
@@ -186,8 +186,8 @@ static int
 exchange_denomkeys_check ()
 {
   if (0 > TALER_EXCHANGEDB_denomination_keys_iterate (exchange_directory,
-                                                  &denomkeys_iter,
+                                                      &denomkeys_iter,
-                                                  NULL))
+                                                      NULL))
     return GNUNET_NO;
   return GNUNET_OK;
 }
@@ -203,11 +203,10 @@ exchange_denomkeys_check ()
 int
 main (int argc, char *const *argv)
 {
-  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+  char *cfgfile;
+  const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    GNUNET_GETOPT_OPTION_CFG_FILE (&cfgfile),
     GNUNET_GETOPT_OPTION_HELP ("gnunet-exchange-keycheck OPTIONS"),
-    {'d', "directory", "DIRECTORY",
-     "exchange directory with keys to check", 1,
-     &GNUNET_GETOPT_set_filename, &exchange_directory},
     GNUNET_GETOPT_OPTION_END
   };
 
@@ -220,20 +219,29 @@ main (int argc, char *const *argv)
                          options,
                          argc, argv) < 0)
     return 1;
-  if (NULL == exchange_directory)
+  kcfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (kcfg,
+                                                  cfgfile))
   {
-    fprintf (stderr,
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-             "Exchange directory not given\n");
+                _("Malformed configuration file `%s', exit ...\n"),
+                cfgfile);
+    GNUNET_free_non_null (cfgfile);
+    return 1;
+  }
+  GNUNET_free_non_null (cfgfile);
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_filename (kcfg,
+                                               "exchange",
+                                               "KEYDIR",
+                                               &exchange_directory))
+  {
+    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+                               "exchange",
+                               "KEYDIR");
     return 1;
   }
 
-  kcfg = TALER_config_load (exchange_directory);
-  if (NULL == kcfg)
-  {
-    fprintf (stderr,
-             "Failed to load exchange configuration\n");
-    return 1;
-  }
   if ( (GNUNET_OK != exchange_signkeys_check ()) ||
        (GNUNET_OK != exchange_denomkeys_check ()) )
   {

src/exchange-tools/taler-exchange-keyup.c

@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2014, 2015 GNUnet e.V.
+  Copyright (C) 2014, 2015, 2016 GNUnet e.V.
 
   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
@@ -876,10 +876,9 @@ int
 main (int argc,
       char *const *argv)
 {
-  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+  char *cfgfile = NULL;
-    {'d', "exchange-dir", "DIR",
+  const struct GNUNET_GETOPT_CommandLineOption options[] = {
-     "exchange directory with keys to update", 1,
+    GNUNET_GETOPT_OPTION_CFG_FILE (&cfgfile),
-     &GNUNET_GETOPT_set_filename, &exchange_directory},
     GNUNET_GETOPT_OPTION_HELP ("Setup signing and denomination keys for a Taler exchange"),
     {'m', "master-key", "FILE",
      "master key file (private key)", 1,
@@ -905,12 +904,17 @@ main (int argc,
                          options,
                          argc, argv) < 0)
     return 1;
-  if (NULL == exchange_directory)
+  kcfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (kcfg,
+                                                  cfgfile))
   {
-    fprintf (stderr,
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-             "Exchange directory not given\n");
+                _("Malformed configuration file `%s', exit ...\n"),
+                cfgfile);
+    GNUNET_free_non_null (cfgfile);
     return 1;
   }
+  GNUNET_free_non_null (cfgfile);
   if (NULL != pretend_time_str)
   {
     if (GNUNET_OK !=
@@ -928,18 +932,26 @@ main (int argc,
     now = GNUNET_TIME_absolute_get ();
   }
   GNUNET_TIME_round_abs (&now);
-
+  if ( (NULL == masterkeyfile) &&
-  kcfg = TALER_config_load (exchange_directory);
+       (GNUNET_OK !=
-  if (NULL == kcfg)
+        GNUNET_CONFIGURATION_get_value_filename (kcfg,
+                                                 "exchange",
+                                                 "MASTER_PRIV_FILE",
+                                                 &masterkeyfile)) )
   {
     fprintf (stderr,
-             "Failed to load exchange configuration\n");
+             "Master key file not given in neither configuration nor command-line\n");
     return 1;
   }
-  if (NULL == masterkeyfile)
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_filename (kcfg,
+                                               "exchange",
+                                               "KEYDIR",
+                                               &exchange_directory))
   {
-    fprintf (stderr,
+    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
-             "Master key file not given\n");
+                               "exchange",
+                               "KEYDIR");
     return 1;
   }
   eddsa_priv = GNUNET_CRYPTO_eddsa_key_create_from_file (masterkeyfile);

src/exchange-tools/taler-exchange-reservemod.c

@@ -51,6 +51,7 @@ static struct TALER_EXCHANGEDB_Plugin *plugin;
 int
 main (int argc, char *const *argv)
 {
+  char *cfgfile = NULL;
   char *reserve_pub_str = NULL;
   char *add_str = NULL;
   struct TALER_Amount add_value;
@@ -63,10 +64,8 @@ main (int argc, char *const *argv)
     {'a', "add", "DENOM",
      "value to add", 1,
      &GNUNET_GETOPT_set_string, &add_str},
-    {'d', "exchange-dir", "DIR",
+    GNUNET_GETOPT_OPTION_CFG_FILE (&cfgfile),
-     "exchange directory with keys to update", 1,
+    {'d', "details", "JSON",
-     &GNUNET_GETOPT_set_filename, &exchange_directory},
-    {'D', "details", "JSON",
      "details about the bank transaction which justify why we add this amount", 1,
      &GNUNET_GETOPT_set_string, &details},
     GNUNET_GETOPT_OPTION_HELP ("Deposit funds into a Taler reserve"),
@@ -87,10 +86,29 @@ main (int argc, char *const *argv)
                          options,
                          argc, argv) < 0)
     return 1;
-  if (NULL == exchange_directory)
+  cfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg,
+                                                  cfgfile))
   {
-    fprintf (stderr,
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-             "Exchange directory not given\n");
+                _("Malformed configuration file `%s', exit ...\n"),
+                cfgfile);
+    GNUNET_free_non_null (cfgfile);
+    GNUNET_free_non_null (add_str);
+    GNUNET_free_non_null (details);
+    GNUNET_free_non_null (reserve_pub_str);
+    return 1;
+  }
+  GNUNET_free_non_null (cfgfile);
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_filename (cfg,
+                                               "exchange",
+                                               "KEYDIR",
+                                               &exchange_directory))
+  {
+    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+                               "exchange",
+                               "KEYDIR");
     GNUNET_free_non_null (add_str);
     GNUNET_free_non_null (details);
     GNUNET_free_non_null (reserve_pub_str);
@@ -133,16 +151,6 @@ main (int argc, char *const *argv)
    return 1;
   }
 
-  cfg = TALER_config_load (exchange_directory);
-  if (NULL == cfg)
-  {
-    fprintf (stderr,
-             "Failed to load exchange configuration\n");
-    GNUNET_free_non_null (add_str);
-    GNUNET_free_non_null (details);
-    GNUNET_free_non_null (reserve_pub_str);
-   return 1;
-  }
   ret = 1;
   if (NULL ==
       (plugin = TALER_EXCHANGEDB_plugin_load (cfg)))

src/exchange-tools/taler-exchange-wire.c

@@ -46,6 +46,11 @@ static char *method;
  */
 static char *output_filename;
 
+/**
+ * Our configuration.
+ */
+static struct GNUNET_CONFIGURATION_Handle *cfg;
+
 
 /**
  * The main function of the taler-exchange-sepa tool.  This tool is used
@@ -59,7 +64,9 @@ int
 main (int argc,
       char *const *argv)
 {
-  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+  char *cfgfile = NULL;
+  const struct GNUNET_GETOPT_CommandLineOption options[] = {
+    GNUNET_GETOPT_OPTION_CFG_FILE (&cfgfile),
     {'j', "json", "JSON",
      "account information in JSON format", 1,
      &GNUNET_GETOPT_set_string, &json_in},
@@ -95,10 +102,26 @@ main (int argc,
                          options,
                          argc, argv) < 0)
     return 1;
-  if (NULL == masterkeyfile)
+  cfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg,
+                                                  cfgfile))
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                _("Malformed configuration file `%s', exit ...\n"),
+                cfgfile);
+    GNUNET_free_non_null (cfgfile);
+    return 1;
+  }
+  GNUNET_free_non_null (cfgfile);
+  if ( (NULL == masterkeyfile) &&
+       (GNUNET_OK !=
+        GNUNET_CONFIGURATION_get_value_filename (cfg,
+                                                 "exchange-master",
+                                                 "MASTER_PRIV_FILE",
+                                                 &masterkeyfile)) )
   {
     fprintf (stderr,
-             "Master key file not given\n");
+             "Master key file not given in neither configuration nor command-line\n");
     return 1;
   }
   eddsa_priv = GNUNET_CRYPTO_eddsa_key_create_from_file (masterkeyfile);

src/exchange/Makefile.am

@@ -89,4 +89,6 @@ TESTS = \
 
 EXTRA_DIST = \
   test-taler-exchange-aggregator-postgres.conf \
+  test_taler_exchange_httpd_home/.local/share/taler/exchange/offline-keys/master.priv \
+  test_taler_exchange_httpd.conf \
   exchange.conf

src/exchange/exchange.conf

@@ -1,13 +1,20 @@
+# This file is in the public domain.
+#
 [exchange]
 # Currency supported by the exchange (can only be one)
 # CURRENCY = EUR
 
-# Wire format supported by the exchange We use 'test' for testing of
+# Where do we store the private keys the exchange needs at
+# runtime? (Denomination and signing keys are then stored
+# in respective subdirectories.)
+KEYDIR = ${TALER_DATA_HOME}/exchange/live-keys/
+
+# Wire format supported by the exchange.  We use 'test' for testing of
 # the actual coin operations.
-WIREFORMAT = test
+# WIREFORMAT = test
 
 # HTTP port the exchange listens to
-PORT = 8081
+# PORT = 8081
 
 # Master public key used to sign the exchange's various keys
 # MASTER_PUBLIC_KEY = 98NJW3CQHZQGQXTY3K85K531XKPAPAVV4Q5V8PYYRR00NJGZWNVG
@@ -18,21 +25,5 @@ DB = postgres
 # Is this is a testcase, use transient DB actions?
 # TESTRUN = YES
 
-[exchangedb-postgres]
+# Where do we store the offline master private key of the exchange?
-DB_CONN_STR = "postgres:///taler"
+MASTER_PRIV_FILE = ${TALER_DATA_HOME}/exchange/offline-keys/master.priv
-
-
-[wire-incoming-test]
-# What is the main website of the bank?
-BANK_URI = "http://localhost:8082/"
-# Into which account at the 'bank' should incoming
-# wire transfers be made?
-BANK_ACCOUNT_NUMBER = 2
-
-[wire-outgoing-test]
-# What is the main website of the bank?
-BANK_URI = "http://localhost:8082/"
-
-# From which account at the 'bank' should outgoing
-# wire transfers be made?
-BANK_ACCOUNT_NUMBER = 3

src/exchange/taler-exchange-aggregator.c

@@ -134,11 +134,6 @@ static char *exchange_currency_string;
  */
 static char *exchange_wireformat;
 
-/**
- * Base directory of the exchange (global)
- */
-static char *exchange_directory;
-
 /**
  * The exchange's configuration (global)
  */
@@ -238,26 +233,20 @@ shutdown_task (void *cls)
   }
   TALER_EXCHANGEDB_plugin_unload (db_plugin);
   TALER_WIRE_plugin_unload (wire_plugin);
+  GNUNET_CONFIGURATION_destroy (cfg);
+  cfg = NULL;
 }
 
 
 /**
- * Load configuration parameters for the exchange
+ * Parse configuration parameters for the exchange server into the
- * server into the corresponding global variables.
+ * corresponding global variables.
  *
- * @param exchange_directory the exchange's directory
  * @return #GNUNET_OK on success
  */
 static int
-exchange_serve_process_config (const char *exchange_directory)
+exchange_serve_process_config ()
 {
-  cfg = TALER_config_load (exchange_directory);
-  if (NULL == cfg)
-  {
-    fprintf (stderr,
-             "Failed to load exchange configuration\n");
-    return GNUNET_SYSERR;
-  }
   if (GNUNET_OK !=
       GNUNET_CONFIGURATION_get_value_string (cfg,
                                              "exchange",
@@ -311,7 +300,6 @@ exchange_serve_process_config (const char *exchange_directory)
              exchange_wireformat);
     return GNUNET_SYSERR;
   }
-
   return GNUNET_OK;
 }
 
@@ -958,10 +946,24 @@ run_transfers (void *cls)
  * First task.
  *
  * @param cls closure, NULL
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param c configuration
  */
 static void
-run (void *cls)
+run (void *cls,
+     char *const *args,
+     const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *c)
 {
+  cfg = GNUNET_CONFIGURATION_dup (c);
+  if (GNUNET_OK != exchange_serve_process_config ())
+  {
+    GNUNET_CONFIGURATION_destroy (cfg);
+    cfg = NULL;
+    global_ret = 1;
+    return;
+  }
   task = GNUNET_SCHEDULER_add_now (&run_transfers,
                                    NULL);
   GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
@@ -982,13 +984,9 @@ main (int argc,
       char *const *argv)
 {
   static const struct GNUNET_GETOPT_CommandLineOption options[] = {
-    {'d', "exchange-dir", "DIR",
-     "exchange directory with configuration and keys for operating the exchange", 1,
-     &GNUNET_GETOPT_set_filename, &exchange_directory},
     {'f', "format", "WIREFORMAT",
      "wireformat to use, overrides WIREFORMAT option in [exchange] section", 1,
      &GNUNET_GETOPT_set_filename, &exchange_wireformat},
-    GNUNET_GETOPT_OPTION_HELP ("background process that aggregates and executes wire transfers to merchants"),
     {'t', "test", NULL,
      "run in test mode with temporary tables", 0,
      &GNUNET_GETOPT_set_one, &test_mode},
@@ -996,30 +994,17 @@ main (int argc,
     GNUNET_GETOPT_OPTION_END
   };
 
-  GNUNET_assert (GNUNET_OK ==
+  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv,
-                 GNUNET_log_setup ("taler-exchange-aggregator",
+                                                 &argc, &argv))
-                                   "INFO",
+    return 2;
-                                   NULL));
-  if (0 >=
-      GNUNET_GETOPT_run ("taler-exchange-aggregator",
-                         options,
-                         argc, argv))
-    return 1;
-  if (NULL == exchange_directory)
-  {
-    fprintf (stderr,
-             "Exchange directory not specified\n");
-    return 1;
-  }
   if (GNUNET_OK !=
-      exchange_serve_process_config (exchange_directory))
+      GNUNET_PROGRAM_run (argc, argv,
-  {
+                          "taler-exchange-aggregator",
+                          gettext_noop ("background process that aggregates and executes wire transfers to merchants"),
+                          options,
+                          &run, NULL))
     return 1;
-  }
+  return global_ret;
-  global_ret = GNUNET_OK;
-  GNUNET_SCHEDULER_run (&run, NULL);
-
-  return (GNUNET_SYSERR == global_ret) ? 1 : 0;
 }
 
 /* end of taler-exchange-aggregator.c */

src/exchange/taler-exchange-httpd.c

@@ -360,16 +360,20 @@ handle_mhd_request (void *cls,
  * @return #GNUNET_OK on success
  */
 static int
-exchange_serve_process_config (const char *exchange_directory)
+exchange_serve_process_config ()
 {
   unsigned long long port;
   char *TMH_master_public_key_str;
 
-  cfg = TALER_config_load (exchange_directory);
+  if (GNUNET_OK !=
-  if (NULL == cfg)
+      GNUNET_CONFIGURATION_get_value_filename (cfg,
+                                               "exchange",
+                                               "KEYDIR",
+                                               &TMH_exchange_directory))
   {
-    fprintf (stderr,
+    GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
-             "Failed to load exchange configuration\n");
+                               "exchange",
+                               "KEYDIR");
     return GNUNET_SYSERR;
   }
   if (GNUNET_OK !=
@@ -615,13 +619,12 @@ int
 main (int argc,
       char *const *argv)
 {
-  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+  char *cfgfile = NULL;
+  const struct GNUNET_GETOPT_CommandLineOption options[] = {
     {'C', "connection-close", NULL,
      "force HTTP connections to be closed after each request", 0,
      &GNUNET_GETOPT_set_one, &TMH_exchange_connection_close},
-    {'d', "exchange-dir", "DIR",
+    GNUNET_GETOPT_OPTION_CFG_FILE (&cfgfile),
-     "exchange directory with configuration and keys for operating the exchange", 1,
-     &GNUNET_GETOPT_set_filename, &TMH_exchange_directory},
     {'t', "timeout", "SECONDS",
      "after how long do connections timeout by default (in seconds)", 1,
      &GNUNET_GETOPT_set_uint, &connection_timeout},
@@ -645,15 +648,18 @@ main (int argc,
                          options,
                          argc, argv))
     return 1;
-  if (NULL == TMH_exchange_directory)
+  cfg = GNUNET_CONFIGURATION_create ();
+  if (GNUNET_SYSERR == GNUNET_CONFIGURATION_load (cfg, cfgfile))
   {
-    fprintf (stderr,
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
-             "Exchange directory not specified\n");
+                _("Malformed configuration file `%s', exit ...\n"),
+                cfgfile);
+    GNUNET_free_non_null (cfgfile);
     return 1;
   }
-
+  GNUNET_free_non_null (cfgfile);
   if (GNUNET_OK !=
-      exchange_serve_process_config (TMH_exchange_directory))
+      exchange_serve_process_config ())
     return 1;
 
   mydaemon = MHD_start_daemon (MHD_USE_SELECT_INTERNALLY | MHD_USE_DEBUG,

src/exchange/taler-exchange-httpd_keystate.c

@@ -650,9 +650,9 @@ TMH_KS_acquire_ (const char *location)
     TALER_EXCHANGEDB_signing_keys_iterate (TMH_exchange_directory,
                                        &reload_keys_sign_iter,
                                        key_state);
-    TALER_EXCHANGEDB_auditor_iterate (TMH_exchange_directory,
+    TALER_EXCHANGEDB_auditor_iterate (cfg,
-                                  &reload_auditor_iter,
+                                      &reload_auditor_iter,
-                                  key_state);
+                                      key_state);
     ks.purpose.size = htonl (sizeof (ks));
     ks.purpose.purpose = htonl (TALER_SIGNATURE_EXCHANGE_KEY_SET);
     ks.list_issue_date = GNUNET_TIME_absolute_hton (key_state->reload_time);

src/exchange/test_taler_exchange_aggregator.c

@@ -570,8 +570,7 @@ interpreter (void *cls)
                                    NULL, NULL, NULL,
                                    "taler-exchange-aggregator",
                                    "taler-exchange-aggregator",
-                                   /* "-c", config_filename, */
+                                   "-c", "test_taler_exchange_httpd.conf",
-                                   "-d", "test-exchange-home",
                                    "-t", /* enable temporary tables */
                                    NULL);
     return;
@@ -1523,6 +1522,9 @@ main (int argc,
                           "test-taler-exchange-aggregator-%s", plugin_name);
   (void) GNUNET_asprintf (&config_filename,
                           "%s.conf", testname);
+  /* these might get in the way */
+  unsetenv ("XDG_DATA_HOME");
+  unsetenv ("XDG_CONFIG_HOME");
   GNUNET_log_setup ("test_taler_exchange_aggregator",
                     "WARNING",
                     NULL);

src/exchange/test_taler_exchange_httpd.conf

@@ -1,3 +1,8 @@
+[PATHS]
+# Persistant data storage for the testcase
+TALER_TEST_HOME = test_taler_exchange_httpd_home/
+
+
 [exchange]
 # Currency supported by the exchange (can only be one)
 CURRENCY = EUR
@@ -19,6 +24,9 @@ DB = postgres
 # Is this is a testcase, use transient DB actions?
 TESTRUN = YES
 
+
+
+
 [exchangedb-postgres]
 DB_CONN_STR = "postgres:///talercheck"
 
@@ -37,3 +45,38 @@ BANK_URI = "http://localhost:8082/"
 # From which account at the 'bank' should outgoing
 # wire transfers be made?
 BANK_ACCOUNT_NUMBER = 3
+
+
+# Coins for the tests.
+[coin_eur_ct_1]
+value = EUR:0.01
+duration_overlap = 5 minutes
+duration_withdraw = 7 days
+duration_spend = 2 years
+duration_legal = 3 years
+fee_withdraw = EUR:0.00
+fee_deposit = EUR:0.00
+fee_refresh = EUR:0.01
+rsa_keysize = 1024
+
+[coin_eur_ct_10]
+value = EUR:0.10
+duration_overlap = 5 minutes
+duration_withdraw = 7 days
+duration_spend = 2 years
+duration_legal = 3 years
+fee_withdraw = EUR:0.01
+fee_deposit = EUR:0.01
+fee_refresh = EUR:0.03
+rsa_keysize = 1024
+
+[coin_eur_1]
+value = EUR:1
+duration_overlap = 5 minutes
+duration_withdraw = 7 days
+duration_spend = 2 years
+duration_legal = 3 years
+fee_withdraw = EUR:0.01
+fee_deposit = EUR:0.01
+fee_refresh = EUR:0.03
+rsa_keysize = 1024

src/exchange/test_taler_exchange_httpd.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 #
 # This file is part of TALER
-# Copyright (C) 2015 GNUnet e.V.
+# Copyright (C) 2015, 2016 Inria and GNUnet e.V.
 #
 #  TALER is free software; you can redistribute it and/or modify it under the
 #  terms of the GNU Affero General Public License as published by the Free Software
@@ -19,15 +19,19 @@
 # taler-exchange-httpd.  Basically, the goal is to make sure that the
 # HTTP server survives (and produces the 'correct' error code).
 #
-# We read the JSON snippets to POST from test_taler_exchange_httpd.data
+#
+# Clear environment from variables that override config.
+export XDG_DATA_HOME=
+export XDG_CONFIG_HOME=
 #
 # Setup keys.
-taler-exchange-keyup -d test-exchange-home -m test-exchange-home/master.priv
+taler-exchange-keyup -c test_taler_exchange_httpd.conf
 # Run Exchange HTTPD (in background)
-taler-exchange-httpd -d test-exchange-home &
+taler-exchange-httpd -c test_taler_exchange_httpd.conf &
 # Give HTTP time to start
 sleep 5
-# Run test...
+# Finally run test...
+# We read the JSON snippets to POST from test_taler_exchange_httpd.data
 cat test_taler_exchange_httpd.data | grep -v ^\# | awk '{ print "curl -d \47"  $2 "\47 http://localhost:8081" $1 }' | bash
 # Stop HTTP server
 kill -TERM %%

src/exchangedb/Makefile.am

@@ -6,6 +6,17 @@ if USE_COVERAGE
   XLIB = -lgcov
 endif
 
+pkgcfgdir = $(prefix)/share/taler/config.d/
+
+pkgcfg_DATA = \
+  exchangedb.conf \
+  exchangedb-postgres.conf
+
+EXTRA_DIST = \
+  exchangedb.conf \
+  exchangedb-postgres.conf
+
+
 plugindir = $(libdir)/taler
 
 if HAVE_POSTGRESQL

src/exchangedb/exchangedb-postgres.conf

@@ -0,0 +1,2 @@
+[exchangedb-postgres]
+DB_CONN_STR = "postgres:///taler"

src/exchangedb/exchangedb.conf

@@ -0,0 +1,7 @@
+# This file is in the public domain.
+#
+# Database-backend independent specification for the exchangedb module.
+#
+[exchangedb]
+# Where do we expect to find information about auditors?
+AUDITOR_BASE_DIR = ${TALER_DATA_HOME}/auditors/

src/exchangedb/exchangedb_keyio.c

@@ -502,9 +502,7 @@ auditor_iter (void *cls,
 /**
  * Call @a it with information for each auditor found in the @a exchange_base_dir.
  *
- * @param exchange_base_dir base directory for the exchange,
+ * @param cfg configuration to use
- *                      the signing keys must be in the #TALER_EXCHANGEDB_DIR_DENOMINATION_KEYS
- *                      subdirectory
  * @param it function to call with auditor information
  * @param it_cls closure for @a it
  * @return -1 on error, 0 if no files were found, otherwise
@@ -513,23 +511,26 @@ auditor_iter (void *cls,
  *         as maybe none of the files were well-formed)
  */
 int
-TALER_EXCHANGEDB_auditor_iterate (const char *exchange_base_dir,
+TALER_EXCHANGEDB_auditor_iterate (const struct GNUNET_CONFIGURATION_Handle *cfg,
                                   TALER_EXCHANGEDB_AuditorIterator it,
                                   void *it_cls)
 {
-  char *dir;
   struct AuditorIterateContext aic;
   int ret;
+  char *auditor_base_dir;
 
-  GNUNET_asprintf (&dir,
+  if (GNUNET_OK !=
-                   "%s" DIR_SEPARATOR_STR TALER_EXCHANGEDB_DIR_AUDITORS,
+      GNUNET_CONFIGURATION_get_value_filename (cfg,
-                   exchange_base_dir);
+                                               "exchangedb",
+                                               "AUDITOR_BASE_DIR",
+                                               &auditor_base_dir))
+    return -1;
   aic.it = it;
   aic.it_cls = it_cls;
-  ret = GNUNET_DISK_directory_scan (dir,
+  ret = GNUNET_DISK_directory_scan (auditor_base_dir,
                                     &auditor_iter,
                                     &aic);
-  GNUNET_free (dir);
+  GNUNET_free (auditor_base_dir);
   return ret;
 }
 

src/include/taler_exchangedb_lib.h

@@ -37,12 +37,6 @@
  */
 #define TALER_EXCHANGEDB_DIR_DENOMINATION_KEYS "denomkeys"
 
-/**
- * Subdirectory under the exchange's base directory which contains
- * the exchange's auditing information.
- */
-#define TALER_EXCHANGEDB_DIR_AUDITORS "auditors"
-
 
 GNUNET_NETWORK_STRUCT_BEGIN
 
@@ -234,9 +228,7 @@ typedef int
 /**
  * Call @a it with information for each auditor found in the @a exchange_base_dir.
  *
- * @param exchange_base_dir base directory for the exchange,
+ * @param cfg configuration to use
- *                      the signing keys must be in the #TALER_EXCHANGEDB_DIR_DENOMINATION_KEYS
- *                      subdirectory
  * @param it function to call with auditor information
  * @param it_cls closure for @a it
  * @return -1 on error, 0 if no files were found, otherwise
@@ -245,7 +237,7 @@ typedef int
  *         as maybe none of the files were well-formed)
  */
 int
-TALER_EXCHANGEDB_auditor_iterate (const char *exchange_base_dir,
+TALER_EXCHANGEDB_auditor_iterate (const struct GNUNET_CONFIGURATION_Handle *cfg,
                                   TALER_EXCHANGEDB_AuditorIterator it,
                                   void *it_cls);
 

src/include/taler_util.h

@@ -95,17 +95,6 @@ TALER_b2s (const void *buf,
 #define TALER_B2S(obj) TALER_b2s (obj, sizeof (*obj))
 
 
-/**
- * Load configuration by parsing all configuration
- * files in the given directory.
- *
- * @param base_dir directory with the configuration files
- * @return NULL on error, otherwise configuration
- */
-struct GNUNET_CONFIGURATION_Handle *
-TALER_config_load (const char *base_dir);
-
-
 /**
  * Obtain denomination amount from configuration file.
  *

src/util/Makefile.am

@@ -6,6 +6,15 @@ if USE_COVERAGE
   XLIB = -lgcov
 endif
 
+
+pkgcfgdir = $(prefix)/share/taler/config.d/
+
+pkgcfg_DATA = \
+  paths.conf
+
+EXTRA_DIST = \
+  paths.conf
+
 if WALLET_ONLY
 lib_LTLIBRARIES = \
   libtalerutil_wallet.la

src/util/paths.conf

@@ -0,0 +1,29 @@
+# This file is in the public domain.
+#
+[PATHS]
+# The PATHS section is special, as filenames including $-expression are
+# expanded using the values from PATHS or the system environment (PATHS
+# is checked first).  Taler also supports expanding $-expressions using
+# defaults with the syntax "${VAR:-default}".  Here, "default" can again
+# be a $-expression.
+#
+# We usually want $HOME for $TALER_HOME, but we allow testcases to
+# easily override this by setting $TALER_TEST_HOME.
+#
+TALER_HOME = ${TALER_TEST_HOME:-${HOME:-${USERPROFILE}}}
+
+# see XDG Base Directory Specification at
+# http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
+# for how these should be used.
+
+# Persistant data storage
+TALER_DATA_HOME = ${XDG_DATA_HOME:-$TALER_HOME/.local/share}/taler/
+
+# Configuration files
+TALER_CONFIG_HOME = ${XDG_CONFIG_HOME:-$TALER_HOME/.config}/taler/
+
+# Cached data, no big deal if lost
+TALER_CACHE_HOME = ${XDG_CACHE_HOME:-$TALER_HOME/.cache}/taler/
+
+# Runtime data (always lost on system boot)
+TALER_RUNTIME_DIR = ${TMPDIR:-${TMP:-/tmp}}/taler-system-runtime/

src/util/util.c

@@ -89,31 +89,4 @@ TALER_config_get_denom (struct GNUNET_CONFIGURATION_Handle *cfg,
 }
 
 
-/**
- * Load configuration by parsing all configuration
- * files in the given directory.
- *
- * @param base_dir directory with the configuration files
- * @return NULL on error, otherwise configuration
- */
-struct GNUNET_CONFIGURATION_Handle *
-TALER_config_load (const char *base_dir)
-{
-  struct GNUNET_CONFIGURATION_Handle *cfg;
-  char *cfg_dir;
-  int res;
-
-  res = GNUNET_asprintf (&cfg_dir,
-                         "%s" DIR_SEPARATOR_STR "config",
-                         base_dir);
-  GNUNET_assert (res > 0);
-  cfg = GNUNET_CONFIGURATION_create ();
-  res = GNUNET_CONFIGURATION_load_from (cfg, cfg_dir);
-  GNUNET_free (cfg_dir);
-  if (GNUNET_OK != res)
-   return NULL;
-  return cfg;
-}
-
-
 /* end of util.c */

src/wire/Makefile.am

@@ -6,6 +6,17 @@ if USE_COVERAGE
   XLIB = -lgcov
 endif
 
+pkgcfgdir = $(prefix)/share/taler/config.d/
+
+pkgcfg_DATA = \
+  wire-sepa.conf \
+  wire-test.conf
+
+
+EXTRA_DIST = \
+  wire-sepa.conf \
+  wire-test.conf
+
 plugindir = $(libdir)/taler
 
 plugin_LTLIBRARIES = \

src/wire/wire-sepa.conf

@@ -0,0 +1,7 @@
+# Configuration for SEPA wire plugin.
+
+[wire-incoming-sepa]
+SEPA_RESPONSE_FILE = ${TALER_CONFIG_HOME}/sepa.json
+
+[wire-incoming-sepa]
+SEPA_RESPONSE_FILE = ${TALER_CONFIG_HOME}/sepa.json

src/wire/wire-test.conf

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+[wire-incoming-test]
+# What is the main website of the bank?
+# BANK_URI = "http://localhost:8082/"
+# Into which account at the 'bank' should incoming
+# wire transfers be made?
+# BANK_ACCOUNT_NUMBER = 2
+
+[wire-outgoing-test]
+# What is the main website of the bank?
+# BANK_URI = "http://localhost:8082/"
+
+# From which account at the 'bank' should outgoing
+# wire transfers be made?
+# BANK_ACCOUNT_NUMBER = 3