1 files changed, 150 insertions, 0 deletions
diff --git a/src/fluent-bit/plugins/out_azure_blob/azure_blob_uri.c b/src/fluent-bit/plugins/out_azure_blob/azure_blob_uri.c
new file mode 100644
index 000000000..c7a05e286
--- /dev/null
+++ b/src/fluent-bit/plugins/out_azure_blob/azure_blob_uri.c
@@ -0,0 +1,150 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2015-2022 The Fluent Bit Authors
+ *
+ *  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.
+ */
+
+#include <fluent-bit/flb_output_plugin.h>
+#include <fluent-bit/flb_utils.h>
+#include <fluent-bit/flb_sds.h>
+
+#include "azure_blob.h"
+
+static inline int to_encode(char c)
+{
+    if ((c >= 48 && c <= 57)  ||  /* 0-9 */
+        (c >= 65 && c <= 90)  ||  /* A-Z */
+        (c >= 97 && c <= 122) ||  /* a-z */
+        (c == '?' || c == '&' || c == '-' || c == '_' || c == '.' ||
+         c == '~' || c == '/')) {
+        return FLB_FALSE;
+    }
+
+    return FLB_TRUE;
+}
+
+flb_sds_t azb_uri_encode(const char *uri, size_t len)
+{
+    int i;
+    flb_sds_t buf = NULL;
+    flb_sds_t tmp = NULL;
+
+    buf = flb_sds_create_size(len * 2);
+    if (!buf) {
+        flb_error("[uri] cannot allocate buffer for URI encoding");
+        return NULL;
+    }
+
+    for (i = 0; i < len; i++) {
+        if (to_encode(uri[i]) == FLB_TRUE) {
+            tmp = flb_sds_printf(&buf, "%%%02X", (unsigned char) *(uri + i));
+            if (!tmp) {
+                flb_sds_destroy(buf);
+                return NULL;
+            }
+            continue;
+        }
+
+        /* Direct assignment, just copy the character */
+        if (buf) {
+            tmp = flb_sds_cat(buf, uri + i, 1);
+            if (!tmp) {
+                flb_sds_destroy(buf);
+                return NULL;
+            }
+            buf = tmp;
+        }
+    }
+
+    return buf;
+}
+
+flb_sds_t azb_uri_decode(const char *uri, size_t len)
+{
+    int i;
+    int hex_result;
+    int c = 0;
+    char hex[3];
+    flb_sds_t out;
+
+    out = flb_sds_create_size(len);
+    if (!out) {
+        return NULL;
+    }
+
+    for (i = 0; i < len; i++) {
+        if (uri[i] == '%') {
+            hex[0] = uri[i + 1];
+            hex[1] = uri[i + 2];
+            hex[2] = '\0';
+
+            hex_result = flb_utils_hex2int(hex, 2);
+            out[c++] = hex_result;
+            i += 2;
+        }
+        else {
+            out[c++] = uri[i];
+        }
+    }
+    out[c++] = '\0';
+
+    return out;
+}
+
+flb_sds_t azb_uri_container(struct flb_azure_blob *ctx)
+{
+    flb_sds_t uri;
+
+    uri = flb_sds_create_size(256);
+    if (!uri) {
+        return NULL;
+    }
+
+    flb_sds_printf(&uri, "%s%s", ctx->base_uri, ctx->container_name);
+    return uri;
+}
+
+flb_sds_t azb_uri_ensure_or_create_container(struct flb_azure_blob *ctx)
+{
+    flb_sds_t uri;
+
+    uri = azb_uri_container(ctx);
+    if (!uri) {
+        return NULL;
+    }
+
+    flb_sds_printf(&uri, "?restype=container");
+    return uri;
+}
+
+flb_sds_t azb_uri_create_blob(struct flb_azure_blob *ctx, char *tag)
+{
+    flb_sds_t uri;
+
+    uri = azb_uri_container(ctx);
+    if (!uri) {
+        return NULL;
+    }
+
+    if (ctx->path) {
+        flb_sds_printf(&uri, "/%s/%s", ctx->path, tag);
+    }
+    else {
+        flb_sds_printf(&uri, "/%s", tag);
+    }
+
+    return uri;
+}