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-rw-r--r--src/lib/Makefile.am6
-rw-r--r--src/lib/auditor_api_deposit_confirmation.c39
-rw-r--r--src/lib/auditor_api_handle.c12
-rw-r--r--src/lib/auditor_api_handle.h2
-rw-r--r--src/lib/exchange_api_deposit.c30
-rw-r--r--src/lib/exchange_api_handle.c8
-rw-r--r--src/lib/exchange_api_handle.h2
-rw-r--r--src/lib/exchange_api_payback.c29
-rw-r--r--src/lib/exchange_api_refresh.c60
-rw-r--r--src/lib/exchange_api_refund.c30
-rw-r--r--src/lib/exchange_api_reserve.c32
-rw-r--r--src/lib/exchange_api_track_transaction.c32
-rw-r--r--src/lib/teah_common.c105
-rw-r--r--src/lib/teah_common.h74
14 files changed, 334 insertions, 127 deletions
diff --git a/src/lib/Makefile.am b/src/lib/Makefile.am
index 8b20860b..0aa78d7b 100644
--- a/src/lib/Makefile.am
+++ b/src/lib/Makefile.am
@@ -27,7 +27,8 @@ libtalerexchange_la_SOURCES = \
exchange_api_reserve.c \
exchange_api_track_transaction.c \
exchange_api_track_transfer.c \
- exchange_api_wire.c
+ exchange_api_wire.c \
+ teah_common.c teah_common.h
libtalerexchange_la_LIBADD = \
libtalerauditor.la \
$(top_builddir)/src/json/libtalerjson.la \
@@ -46,7 +47,8 @@ libtalerauditor_la_SOURCES = \
auditor_api_curl_defaults.c auditor_api_curl_defaults.h \
auditor_api_handle.c auditor_api_handle.h \
auditor_api_deposit_confirmation.c \
- auditor_api_exchanges.c
+ auditor_api_exchanges.c \
+ teah_common.c teah_common.h
libtalerauditor_la_LIBADD = \
$(top_builddir)/src/json/libtalerjson.la \
$(top_builddir)/src/util/libtalerutil.la \
diff --git a/src/lib/auditor_api_deposit_confirmation.c b/src/lib/auditor_api_deposit_confirmation.c
index c34890e6..bb637797 100644
--- a/src/lib/auditor_api_deposit_confirmation.c
+++ b/src/lib/auditor_api_deposit_confirmation.c
@@ -49,9 +49,10 @@ struct TALER_AUDITOR_DepositConfirmationHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Handle for the request.
@@ -338,26 +339,26 @@ TALER_AUDITOR_deposit_confirmation (struct TALER_AUDITOR_Handle *auditor,
dh->url = MAH_path_to_url (auditor, "/deposit-confirmation");
eh = TAL_curl_easy_get (dh->url);
- GNUNET_assert (NULL != (dh->json_enc =
- json_dumps (deposit_confirmation_obj,
- JSON_COMPACT)));
- json_decref (deposit_confirmation_obj);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "URL for deposit-confirmation: `%s'\n",
- dh->url);
-
GNUNET_assert (CURLE_OK ==
curl_easy_setopt (eh,
CURLOPT_CUSTOMREQUEST,
"PUT"));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- dh->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (dh->json_enc)));
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&dh->ctx,
+ eh,
+ deposit_confirmation_obj))
+ {
+ GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (deposit_confirmation_obj);
+ GNUNET_free (dh->url);
+ GNUNET_free (dh);
+ return NULL;
+ }
+ json_decref (deposit_confirmation_obj);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "URL for deposit-confirmation: `%s'\n",
+ dh->url);
ctx = MAH_handle_to_context (auditor);
dh->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -383,7 +384,7 @@ TALER_AUDITOR_deposit_confirmation_cancel (struct TALER_AUDITOR_DepositConfirmat
deposit_confirmation->job = NULL;
}
GNUNET_free (deposit_confirmation->url);
- GNUNET_free (deposit_confirmation->json_enc);
+ TEAH_curl_easy_post_finished (&deposit_confirmation->ctx);
GNUNET_free (deposit_confirmation);
}
diff --git a/src/lib/auditor_api_handle.c b/src/lib/auditor_api_handle.c
index 70bf6f71..870eed83 100644
--- a/src/lib/auditor_api_handle.c
+++ b/src/lib/auditor_api_handle.c
@@ -15,7 +15,7 @@
<http://www.gnu.org/licenses/>
*/
/**
- * @file auditor-lib/auditor_api_handle.c
+ * @file lib/auditor_api_handle.c
* @brief Implementation of the "handle" component of the auditor's HTTP API
* @author Sree Harsha Totakura <sreeharsha@totakura.in>
* @author Christian Grothoff
@@ -462,6 +462,16 @@ TALER_AUDITOR_connect (struct GNUNET_CURL_Context *ctx,
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Connecting to auditor at URL `%s'.\n",
url);
+ /* Disable 100 continue processing */
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_CURL_append_header (ctx,
+ "Expect:"));
+#if COMPRESS_BODIES
+ /* Tell auditor we compress bodies */
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_CURL_append_header (ctx,
+ "Content-encoding: deflate"));
+#endif
auditor = GNUNET_new (struct TALER_AUDITOR_Handle);
auditor->ctx = ctx;
auditor->url = GNUNET_strdup (url);
diff --git a/src/lib/auditor_api_handle.h b/src/lib/auditor_api_handle.h
index c3c73f5c..c053cbbc 100644
--- a/src/lib/auditor_api_handle.h
+++ b/src/lib/auditor_api_handle.h
@@ -22,7 +22,7 @@
#include "platform.h"
#include <gnunet/gnunet_curl_lib.h>
#include "taler_auditor_service.h"
-
+#include "teah_common.h"
/**
* Get the context of a auditor.
diff --git a/src/lib/exchange_api_deposit.c b/src/lib/exchange_api_deposit.c
index 4033cc2e..b99c7a93 100644
--- a/src/lib/exchange_api_deposit.c
+++ b/src/lib/exchange_api_deposit.c
@@ -60,9 +60,10 @@ struct TALER_EXCHANGE_DepositHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Handle for the request.
@@ -581,21 +582,22 @@ TALER_EXCHANGE_deposit (struct TALER_EXCHANGE_Handle *exchange,
dh->coin_value = dki->value;
eh = TEL_curl_easy_get (dh->url);
- GNUNET_assert (NULL != (dh->json_enc =
- json_dumps (deposit_obj,
- JSON_COMPACT)));
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&dh->ctx,
+ eh,
+ deposit_obj))
+ {
+ GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (deposit_obj);
+ GNUNET_free (dh->url);
+ GNUNET_free (dh);
+ return NULL;
+ }
json_decref (deposit_obj);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"URL for deposit: `%s'\n",
dh->url);
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- dh->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (dh->json_enc)));
ctx = TEAH_handle_to_context (exchange);
dh->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -621,7 +623,7 @@ TALER_EXCHANGE_deposit_cancel (struct TALER_EXCHANGE_DepositHandle *deposit)
deposit->job = NULL;
}
GNUNET_free (deposit->url);
- GNUNET_free (deposit->json_enc);
+ TEAH_curl_easy_post_finished (&deposit->ctx);
GNUNET_free (deposit);
}
diff --git a/src/lib/exchange_api_handle.c b/src/lib/exchange_api_handle.c
index 93fe798c..0f3cfe0a 100644
--- a/src/lib/exchange_api_handle.c
+++ b/src/lib/exchange_api_handle.c
@@ -33,6 +33,7 @@
#include "exchange_api_handle.h"
#include "exchange_api_curl_defaults.h"
#include "backoff.h"
+#include "teah_common.h"
/**
* Which revision of the Taler protocol is implemented
@@ -1783,6 +1784,12 @@ TALER_EXCHANGE_connect
GNUNET_break (GNUNET_OK ==
GNUNET_CURL_append_header (ctx,
"Expect:"));
+#if COMPRESS_BODIES
+ /* Tell exchange we compress bodies */
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_CURL_append_header (ctx,
+ "Content-encoding: deflate"));
+#endif
exchange = GNUNET_new (struct TALER_EXCHANGE_Handle);
exchange->ctx = ctx;
exchange->url = GNUNET_strdup (url);
@@ -1816,6 +1823,7 @@ TALER_EXCHANGE_connect
}
+
/**
* Initiate download of /keys from the exchange.
*
diff --git a/src/lib/exchange_api_handle.h b/src/lib/exchange_api_handle.h
index 2c01e319..6bb3fff2 100644
--- a/src/lib/exchange_api_handle.h
+++ b/src/lib/exchange_api_handle.h
@@ -24,7 +24,7 @@
#include "taler_auditor_service.h"
#include "taler_exchange_service.h"
#include "taler_crypto_lib.h"
-
+#include "teah_common.h"
/**
* Entry in DLL of auditors used by an exchange.
diff --git a/src/lib/exchange_api_payback.c b/src/lib/exchange_api_payback.c
index b3624f73..325263d7 100644
--- a/src/lib/exchange_api_payback.c
+++ b/src/lib/exchange_api_payback.c
@@ -49,9 +49,10 @@ struct TALER_EXCHANGE_PaybackHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Denomination key of the coin.
@@ -321,29 +322,23 @@ TALER_EXCHANGE_payback (struct TALER_EXCHANGE_Handle *exchange,
ph->cb = payback_cb;
ph->cb_cls = payback_cb_cls;
ph->url = TEAH_path_to_url (exchange, "/payback");
-
- ph->json_enc = json_dumps (payback_obj,
- JSON_COMPACT);
- json_decref (payback_obj);
- if (NULL == ph->json_enc)
+ eh = TEL_curl_easy_get (ph->url);
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&ph->ctx,
+ eh,
+ payback_obj))
{
GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (payback_obj);
GNUNET_free (ph->url);
GNUNET_free (ph);
return NULL;
}
- eh = TEL_curl_easy_get (ph->url);
+ json_decref (payback_obj);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"URL for payback: `%s'\n",
ph->url);
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- ph->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (ph->json_enc)));
ctx = TEAH_handle_to_context (exchange);
ph->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -369,7 +364,7 @@ TALER_EXCHANGE_payback_cancel (struct TALER_EXCHANGE_PaybackHandle *ph)
ph->job = NULL;
}
GNUNET_free (ph->url);
- GNUNET_free (ph->json_enc);
+ TEAH_curl_easy_post_finished (&ph->ctx);
GNUNET_free (ph);
}
diff --git a/src/lib/exchange_api_refresh.c b/src/lib/exchange_api_refresh.c
index 4b2de2f4..30025d77 100644
--- a/src/lib/exchange_api_refresh.c
+++ b/src/lib/exchange_api_refresh.c
@@ -834,9 +834,10 @@ struct TALER_EXCHANGE_RefreshMeltHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Handle for the request.
@@ -1206,18 +1207,19 @@ TALER_EXCHANGE_refresh_melt (struct TALER_EXCHANGE_Handle *exchange,
rmh->url = TEAH_path_to_url (exchange,
"/refresh/melt");
eh = TEL_curl_easy_get (rmh->url);
- GNUNET_assert (NULL != (rmh->json_enc =
- json_dumps (melt_obj,
- JSON_COMPACT)));
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&rmh->ctx,
+ eh,
+ melt_obj))
+ {
+ GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (melt_obj);
+ GNUNET_free (rmh->url);
+ GNUNET_free (rmh);
+ return NULL;
+ }
json_decref (melt_obj);
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- rmh->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (rmh->json_enc)));
ctx = TEAH_handle_to_context (exchange);
rmh->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -1245,7 +1247,7 @@ TALER_EXCHANGE_refresh_melt_cancel (struct TALER_EXCHANGE_RefreshMeltHandle *rmh
free_melt_data (rmh->md); /* does not free 'md' itself */
GNUNET_free (rmh->md);
GNUNET_free (rmh->url);
- GNUNET_free (rmh->json_enc);
+ TEAH_curl_easy_post_finished (&rmh->ctx);
GNUNET_free (rmh);
}
@@ -1270,9 +1272,10 @@ struct TALER_EXCHANGE_RefreshRevealHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Handle for the request.
@@ -1634,18 +1637,19 @@ TALER_EXCHANGE_refresh_reveal (struct TALER_EXCHANGE_Handle *exchange,
"/refresh/reveal");
eh = TEL_curl_easy_get (rrh->url);
- GNUNET_assert (NULL != (rrh->json_enc =
- json_dumps (reveal_obj,
- JSON_COMPACT)));
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&rrh->ctx,
+ eh,
+ reveal_obj))
+ {
+ GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (reveal_obj);
+ GNUNET_free (rrh->url);
+ GNUNET_free (rrh);
+ return NULL;
+ }
json_decref (reveal_obj);
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- rrh->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (rrh->json_enc)));
ctx = TEAH_handle_to_context (rrh->exchange);
rrh->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -1671,7 +1675,7 @@ TALER_EXCHANGE_refresh_reveal_cancel (struct TALER_EXCHANGE_RefreshRevealHandle
rrh->job = NULL;
}
GNUNET_free (rrh->url);
- GNUNET_free (rrh->json_enc);
+ TEAH_curl_easy_post_finished (&rrh->ctx);
free_melt_data (rrh->md); /* does not free 'md' itself */
GNUNET_free (rrh->md);
GNUNET_free (rrh);
diff --git a/src/lib/exchange_api_refund.c b/src/lib/exchange_api_refund.c
index 75ebdc4e..14221317 100644
--- a/src/lib/exchange_api_refund.c
+++ b/src/lib/exchange_api_refund.c
@@ -49,9 +49,10 @@ struct TALER_EXCHANGE_RefundHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Handle for the request.
@@ -368,21 +369,22 @@ refund_obj = json_pack ("{s:o, s:o," /* amount/fee */
refund_fee);
eh = TEL_curl_easy_get (rh->url);
- GNUNET_assert (NULL != (rh->json_enc =
- json_dumps (refund_obj,
- JSON_COMPACT)));
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&rh->ctx,
+ eh,
+ refund_obj))
+ {
+ GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (refund_obj);
+ GNUNET_free (rh->url);
+ GNUNET_free (rh);
+ return NULL;
+ }
json_decref (refund_obj);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"URL for refund: `%s'\n",
rh->url);
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- rh->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (rh->json_enc)));
ctx = TEAH_handle_to_context (exchange);
rh->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -408,7 +410,7 @@ TALER_EXCHANGE_refund_cancel (struct TALER_EXCHANGE_RefundHandle *refund)
refund->job = NULL;
}
GNUNET_free (refund->url);
- GNUNET_free (refund->json_enc);
+ TEAH_curl_easy_post_finished (&refund->ctx);
GNUNET_free (refund);
}
diff --git a/src/lib/exchange_api_reserve.c b/src/lib/exchange_api_reserve.c
index 66509bc5..ae0bd01d 100644
--- a/src/lib/exchange_api_reserve.c
+++ b/src/lib/exchange_api_reserve.c
@@ -677,9 +677,10 @@ struct TALER_EXCHANGE_ReserveWithdrawHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Handle for the request.
@@ -1022,25 +1023,26 @@ reserve_withdraw_internal (struct TALER_EXCHANGE_Handle *exchange,
if (NULL == withdraw_obj)
{
GNUNET_break (0);
+ GNUNET_free (wsh);
return NULL;
}
wsh->ps = *ps;
wsh->url = TEAH_path_to_url (exchange, "/reserve/withdraw");
-
eh = TEL_curl_easy_get (wsh->url);
- GNUNET_assert (NULL != (wsh->json_enc =
- json_dumps (withdraw_obj,
- JSON_COMPACT)));
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&wsh->ctx,
+ eh,
+ withdraw_obj))
+ {
+ GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (withdraw_obj);
+ GNUNET_free (wsh->url);
+ GNUNET_free (wsh);
+ return NULL;
+ }
json_decref (withdraw_obj);
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- wsh->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (wsh->json_enc)));
ctx = TEAH_handle_to_context (exchange);
wsh->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -1199,7 +1201,7 @@ TALER_EXCHANGE_reserve_withdraw_cancel (struct TALER_EXCHANGE_ReserveWithdrawHan
sign->job = NULL;
}
GNUNET_free (sign->url);
- GNUNET_free (sign->json_enc);
+ TEAH_curl_easy_post_finished (&sign->ctx);
GNUNET_free (sign);
}
diff --git a/src/lib/exchange_api_track_transaction.c b/src/lib/exchange_api_track_transaction.c
index 0942ce84..67efd77a 100644
--- a/src/lib/exchange_api_track_transaction.c
+++ b/src/lib/exchange_api_track_transaction.c
@@ -49,9 +49,10 @@ struct TALER_EXCHANGE_TrackTransactionHandle
char *url;
/**
- * JSON encoding of the request to POST.
+ * Context for #TEH_curl_easy_post(). Keeps the data that must
+ * persist for Curl to make the upload.
*/
- char *json_enc;
+ struct TEAH_PostContext ctx;
/**
* Handle for the request.
@@ -322,18 +323,19 @@ TALER_EXCHANGE_track_transaction (struct TALER_EXCHANGE_Handle *exchange,
dwh->depconf.coin_pub = *coin_pub;
eh = TEL_curl_easy_get (dwh->url);
- GNUNET_assert (NULL != (dwh->json_enc =
- json_dumps (deposit_wtid_obj,
- JSON_COMPACT)));
+ if (GNUNET_OK !=
+ TEAH_curl_easy_post (&dwh->ctx,
+ eh,
+ deposit_wtid_obj))
+ {
+ GNUNET_break (0);
+ curl_easy_cleanup (eh);
+ json_decref (deposit_wtid_obj);
+ GNUNET_free (dwh->url);
+ GNUNET_free (dwh);
+ return NULL;
+ }
json_decref (deposit_wtid_obj);
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDS,
- dwh->json_enc));
- GNUNET_assert (CURLE_OK ==
- curl_easy_setopt (eh,
- CURLOPT_POSTFIELDSIZE,
- strlen (dwh->json_enc)));
ctx = TEAH_handle_to_context (exchange);
dwh->job = GNUNET_CURL_job_add (ctx,
eh,
@@ -359,9 +361,9 @@ TALER_EXCHANGE_track_transaction_cancel (struct TALER_EXCHANGE_TrackTransactionH
dwh->job = NULL;
}
GNUNET_free (dwh->url);
- GNUNET_free (dwh->json_enc);
+ TEAH_curl_easy_post_finished (&dwh->ctx);
GNUNET_free (dwh);
}
-/* end of exchange_api_deposit_wtid.c */
+/* end of exchange_api_track_transaction.c */
diff --git a/src/lib/teah_common.c b/src/lib/teah_common.c
new file mode 100644
index 00000000..8f994ef3
--- /dev/null
+++ b/src/lib/teah_common.c
@@ -0,0 +1,105 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2019 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 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 lib/teah_common.c
+ * @brief Helper routines shared by libtalerexchange and libtalerauditor
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include "teah_common.h"
+
+#if COMPRESS_BODIES
+#include <zlib.h>
+#endif
+
+
+/**
+ * Add the @a body as POST data to the easy handle in
+ * @a ctx.
+ *
+ * @param ctx[in,out] a request context (updated)
+ * @param eh easy handle to use
+ * @param body JSON body to add to @e ctx
+ * @return #GNUNET_OK on success #GNUNET_SYSERR on failure
+ */
+int
+TEAH_curl_easy_post (struct TEAH_PostContext *ctx,
+ CURL *eh,
+ const json_t *body)
+{
+ char *str;
+ size_t slen;
+
+ str = json_dumps (body,
+ JSON_COMPACT);
+ if (NULL == str)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ slen = strlen (str);
+#if COMPRESS_BODIES
+ {
+ Bytef *cbuf;
+ uLongf cbuf_size;
+ int ret;
+
+ cbuf_size = compressBound (slen);
+ cbuf = GNUNET_malloc (cbuf_size);
+ ret = compress (cbuf,
+ &cbuf_size,
+ (const Bytef *) str,
+ slen);
+ if (Z_OK != ret)
+ {
+ /* compression failed!? */
+ GNUNET_break (0);
+ GNUNET_free (cbuf);
+ return GNUNET_SYSERR;
+ }
+ free (str);
+ slen = (size_t) cbuf_size;
+ ctx->json_enc = (char *) cbuf;
+ }
+#else
+ ctx->json_enc = str;
+#endif
+ GNUNET_assert (CURLE_OK ==
+ curl_easy_setopt (eh,
+ CURLOPT_POSTFIELDS,
+ ctx->json_enc));
+ GNUNET_assert (CURLE_OK ==
+ curl_easy_setopt (eh,
+ CURLOPT_POSTFIELDSIZE,
+ slen));
+ return GNUNET_OK;
+}
+
+
+/**
+ * Free the data in @a ctx.
+ *
+ * @param ctx[in] a request context (updated)
+ */
+void
+TEAH_curl_easy_post_finished (struct TEAH_PostContext *ctx)
+{
+ GNUNET_free_non_null (ctx->json_enc);
+}
diff --git a/src/lib/teah_common.h b/src/lib/teah_common.h
new file mode 100644
index 00000000..66937a26
--- /dev/null
+++ b/src/lib/teah_common.h
@@ -0,0 +1,74 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2019 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 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 lib/teah_common.h
+ * @brief Helper routines shared by libtalerexchange and libtalerauditor
+ * @author Christian Grothoff
+ */
+#ifndef TEAH_COMMON_H
+#define TEAH_COMMON_H
+
+#include <gnunet/gnunet_curl_lib.h>
+#include "taler_json_lib.h"
+
+/**
+ * Should we compress PUT/POST bodies with 'deflate' encoding?
+ */
+#define COMPRESS_BODIES 0
+
+/**
+ * State used for #TEAL_curl_easy_post() and
+ * #TEAL_curl_easy_post_finished().
+ */
+struct TEAH_PostContext
+{
+ /**
+ * JSON encoding of the request to POST.
+ */
+ char *json_enc;
+
+};
+
+
+/**
+ * Add the @a body as POST data to the easy handle in
+ * @a ctx.
+ *
+ * @param ctx[in,out] a request context (updated)
+ * @param eh easy handle to use
+ * @param body JSON body to add to @e ctx
+ * @return #GNUNET_OK on success #GNUNET_SYSERR on failure
+ */
+int
+TEAH_curl_easy_post (struct TEAH_PostContext *ctx,
+ CURL *eh,
+ const json_t *body);
+
+
+/**
+ * Free the data in @a ctx.
+ *
+ * @param ctx[in] a request context (updated)
+ */
+void
+TEAH_curl_easy_post_finished (struct TEAH_PostContext *ctx);
+
+
+
+#endif