1 files changed, 68 insertions, 0 deletions
diff --git a/fluent-bit/lib/chunkio/src/cio_sha1.c b/fluent-bit/lib/chunkio/src/cio_sha1.c
new file mode 100644
index 00000000..1748b683
--- /dev/null
+++ b/fluent-bit/lib/chunkio/src/cio_sha1.c
@@ -0,0 +1,68 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Chunk I/O
+ *  =========
+ *  Copyright 2018 Eduardo Silva <eduardo@monkey.io>
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+/* Just a simple wrapper over sha1 routines */
+
+#include <stdio.h>
+#include <string.h>
+#include <chunkio/cio_sha1.h>
+
+void cio_sha1_init(struct cio_sha1 *ctx)
+{
+    SHA1_Init(&ctx->sha);
+}
+
+void cio_sha1_update(struct cio_sha1 *ctx, const void *data, unsigned long len)
+{
+    SHA1_Update(&ctx->sha, data, len);
+}
+
+void cio_sha1_final(unsigned char hash[20], struct cio_sha1 *ctx)
+{
+    SHA1_Final(hash, &ctx->sha);
+}
+
+void cio_sha1_hash(const void *data_in, unsigned long length,
+                   unsigned char *data_out, void *state)
+{
+    SHA_CTX sha;
+    SHA1_Init(&sha);
+    SHA1_Update(&sha, data_in, length);
+
+    /*
+     * If state is not NULL, make a copy of the SHA context for future
+     * iterations and updates.
+     */
+    if (state != NULL) {
+        memcpy(state, &sha, sizeof(SHA_CTX));
+    }
+
+    SHA1_Final(data_out, &sha);
+}
+
+void cio_sha1_to_hex(unsigned char *in, char *out)
+{
+    int i;
+
+    for (i = 0; i < 20; ++i) {
+        sprintf(&out[i*2], "%02x", in[i]);
+    }
+
+    out[40] = '\0';
+}