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/* -*- 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;
}
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