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-rw-r--r--src/curl/curl.c116
1 files changed, 116 insertions, 0 deletions
diff --git a/src/curl/curl.c b/src/curl/curl.c
new file mode 100644
index 00000000..3e56c753
--- /dev/null
+++ b/src/curl/curl.c
@@ -0,0 +1,116 @@
+/*
+ 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 "taler_curl_lib.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
+TALER_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;
+ }
+ GNUNET_assert
+ (NULL != (ctx->headers = curl_slist_append
+ (ctx->headers,
+ "Content-Encoding: deflate")));
+#else
+ ctx->json_enc = str;
+#endif
+
+ GNUNET_assert
+ (NULL != (ctx->headers = curl_slist_append
+ (ctx->headers,
+ "Content-Type: application/json")));
+
+ 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
+TALER_curl_easy_post_finished (struct TEAH_PostContext *ctx)
+{
+ curl_slist_free_all (ctx->headers);
+ ctx->headers = NULL;
+ GNUNET_free_non_null (ctx->json_enc);
+}