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-rw-r--r--src/exchange-tools/.gitignore1
-rw-r--r--src/exchange-tools/Makefile.am13
-rw-r--r--src/exchange-tools/taler-exchange-offline.c300
3 files changed, 314 insertions, 0 deletions
diff --git a/src/exchange-tools/.gitignore b/src/exchange-tools/.gitignore
index 6e9e12faf..af97f4b07 100644
--- a/src/exchange-tools/.gitignore
+++ b/src/exchange-tools/.gitignore
@@ -1,3 +1,4 @@
test_taler_exchange_httpd_home/.local/share/taler/exchange/live-keys/
test_taler_exchange_httpd_home/.local/share/taler/exchange/wirefees/
test_taler_exchange_httpd_home/.config/taler/account-1.json
+taler-exchange-offline
diff --git a/src/exchange-tools/Makefile.am b/src/exchange-tools/Makefile.am
index a7761a3d3..95919c82c 100644
--- a/src/exchange-tools/Makefile.am
+++ b/src/exchange-tools/Makefile.am
@@ -15,6 +15,7 @@ endif
bin_PROGRAMS = \
taler-exchange-keyup \
taler-exchange-keycheck \
+ taler-exchange-offline \
taler-exchange-wire \
taler-exchange-dbinit
@@ -32,6 +33,18 @@ taler_exchange_keyup_LDADD = \
taler_exchange_keyup_LDFLAGS = $(POSTGRESQL_LDFLAGS)
+taler_exchange_offline_SOURCES = \
+ taler-exchange-offline.c
+taler_exchange_offline_LDADD = \
+ $(LIBGCRYPT_LIBS) \
+ $(top_builddir)/src/lib/libtalerexchange.la \
+ $(top_builddir)/src/json/libtalerjson.la \
+ $(top_builddir)/src/util/libtalerutil.la \
+ -lgnunetcurl \
+ -lgnunetutil \
+ $(XLIB)
+
+
taler_exchange_wire_SOURCES = \
taler-exchange-wire.c
taler_exchange_wire_LDADD = \
diff --git a/src/exchange-tools/taler-exchange-offline.c b/src/exchange-tools/taler-exchange-offline.c
new file mode 100644
index 000000000..f8cbbc40a
--- /dev/null
+++ b/src/exchange-tools/taler-exchange-offline.c
@@ -0,0 +1,300 @@
+/*
+ This file is part of TALER
+ Copyright (C) 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 taler-exchange-offline.c
+ * @brief Support for operations involving the exchange's offline master key.
+ * @author Christian Grothoff
+ */
+#include <platform.h>
+#include "taler_exchange_service.h"
+
+
+/**
+ * Our context for making HTTP requests.
+ */
+static struct GNUNET_CURL_Context *ctx;
+
+/**
+ * Reschedule context for #ctx.
+ */
+static struct GNUNET_CURL_RescheduleContext *rc;
+
+/**
+ * Handle to the exchange's configuration
+ */
+static const struct GNUNET_CONFIGURATION_Handle *kcfg;
+
+/**
+ * Return value from main().
+ */
+static int global_ret;
+
+
+/**
+ * A subcommand supported by this program.
+ */
+struct SubCommand
+{
+ /**
+ * Name of the command.
+ */
+ const char *name;
+
+ /**
+ * Help text for the command.
+ */
+ const char *help;
+
+ /**
+ * Function implementing the command.
+ *
+ * @param args subsequent command line arguments (char **)
+ */
+ void (*cb)(char *const *args);
+};
+
+
+/**
+ * Next work item to perform.
+ */
+static struct GNUNET_SCHEDULER_Task *nxt;
+
+/**
+ * Handle for #do_download.
+ */
+static struct TALER_EXCHANGE_ManagementGetKeysHandle *mgkh;
+
+
+/**
+ * Shutdown task. Invoked when the application is being terminated.
+ *
+ * @param cls NULL
+ */
+static void
+do_shutdown (void *cls)
+{
+ (void) cls;
+ if (NULL != nxt)
+ {
+ GNUNET_SCHEDULER_cancel (nxt);
+ nxt = NULL;
+ }
+ if (NULL != mgkh)
+ {
+ TALER_EXCHANGE_get_management_keys_cancel (mgkh);
+ mgkh = NULL;
+ }
+ if (NULL != ctx)
+ {
+ GNUNET_CURL_fini (ctx);
+ ctx = NULL;
+ }
+ if (NULL != rc)
+ {
+ GNUNET_CURL_gnunet_rc_destroy (rc);
+ rc = NULL;
+ }
+}
+
+
+/**
+ * Function to continue processing the next command.
+ *
+ * @param cls must be a `char *const*` with the array of
+ * command-line arguments to process next
+ */
+static void
+work (void *cls);
+
+
+/**
+ * Function to schedule job to process the next command.
+ *
+ * @param args the array of command-line arguments to process next
+ */
+static void
+next (char *const *args)
+{
+ GNUNET_assert (NULL == nxt);
+ nxt = GNUNET_SCHEDULER_add_now (&work,
+ (void *) args);
+}
+
+
+/**
+ * Function called with information about future keys. Dumps the JSON output
+ * (on success), either into an internal buffer or to stdout (depending on
+ * whether there are subsequent commands).
+ *
+ * @param cls closure with the `char **` remaining args
+ * @param hr HTTP response data
+ * @param keys information about the various keys used
+ * by the exchange, NULL if /management/keys failed
+ */
+static void
+download_cb (void *cls,
+ const struct TALER_EXCHANGE_HttpResponse *hr,
+ const struct TALER_EXCHANGE_FutureKeys *keys)
+{
+ char *const *args = cls;
+
+ mgkh = NULL;
+ fprintf (stderr,
+ "FIXME: dump!\n");
+ next (args);
+}
+
+
+/**
+ * Download future keys.
+ *
+ * @param args the array of command-line arguments to process next
+ */
+static void
+do_download (char *const *args)
+{
+ char *exchange_url;
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (kcfg,
+ "exchange",
+ "BASE_URL",
+ &exchange_url))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ "exchange",
+ "BASE_URL");
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ mgkh = TALER_EXCHANGE_get_management_keys (ctx,
+ exchange_url,
+ &download_cb,
+ (void *) args);
+ GNUNET_free (exchange_url);
+}
+
+
+static void
+work (void *cls)
+{
+ char *const *args = cls;
+ struct SubCommand cmds[] = {
+ {
+ .name = "download",
+ .help =
+ "obtain future public keys from exchange (to be performed online!)",
+ .cb = &do_download
+ },
+ /* list terminator */
+ {
+ .name = NULL,
+ }
+ };
+ (void) cls;
+
+ nxt = NULL;
+ for (unsigned int i = 0; NULL != cmds[i].name; i++)
+ {
+ if (0 == strcasecmp (cmds[i].name,
+ args[0]))
+ {
+ cmds[i].cb (&args[1]);
+ return;
+ }
+ }
+
+ if (0 != strcasecmp ("help",
+ args[0]))
+ fprintf (stderr,
+ "Unexpected command `%s'\n",
+ args[0]);
+ fprintf (stderr,
+ "Supported subcommands:");
+ for (unsigned int i = 0; NULL != cmds[i].name; i++)
+ {
+ fprintf (stderr,
+ "%s - %s\n",
+ cmds[i].name,
+ cmds[i].help);
+ }
+}
+
+
+/**
+ * Main function that will be run.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param cfg configuration
+ */
+static void
+run (void *cls,
+ char *const *args,
+ const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ kcfg = cfg;
+ ctx = GNUNET_CURL_init (&GNUNET_CURL_gnunet_scheduler_reschedule,
+ &rc);
+ rc = GNUNET_CURL_gnunet_rc_create (ctx);
+ GNUNET_SCHEDULER_add_shutdown (&do_shutdown,
+ NULL);
+ next (args);
+}
+
+
+/**
+ * The main function of the taler-exchange-keyup tool. This tool is used to
+ * create the signing and denomination keys for the exchange. It uses the
+ * long-term offline private key and writes the (additional) key files to the
+ * respective exchange directory (from where they can then be copied to the
+ * online server). Note that we need (at least) the most recent generated
+ * previous keys to align the validity periods.
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc,
+ char *const *argv)
+{
+ struct GNUNET_GETOPT_CommandLineOption options[] = {
+ GNUNET_GETOPT_OPTION_END
+ };
+
+ /* force linker to link against libtalerutil; if we do
+ not do this, the linker may "optimize" libtalerutil
+ away and skip #TALER_OS_init(), which we do need */
+ (void) TALER_project_data_default ();
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_log_setup ("taler-exchange-offline",
+ "WARNING",
+ NULL));
+ if (GNUNET_OK !=
+ GNUNET_PROGRAM_run (argc, argv,
+ "taler-exchange-offline",
+ "Operations for offline signing for a Taler exchange",
+ options,
+ &run, NULL))
+ return 1;
+ return global_ret;
+}
+
+
+/* end of taler-exchange-offline.c */
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-09 08:59:25 +0000