#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.
#
BEGIN {
    $ENV{VAULT_TOKEN} = "root";
}

use t::APISIX 'no_plan';

repeat_each(1);
no_long_string();
no_shuffle();
no_root_location();

add_block_preprocessor(sub {
    my ($block) = @_;

    if (!$block->request) {
        $block->set_value("request", "GET /t");
    }

    if (!$block->no_error_log && !$block->error_log) {
        $block->set_value("no_error_log", "[error]\n[alert]");
    }
});

run_tests;

__DATA__

=== TEST 1: set hmac-auth conf: secret_key uses secret ref
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            -- put secret vault config
            local code, body = t('/apisix/admin/secrets/vault/test1',
                ngx.HTTP_PUT,
                [[{
                    "uri": "http://127.0.0.1:8200",
                    "prefix" : "kv/apisix",
                    "token" : "root"
                }]]
                )

            if code >= 300 then
                ngx.status = code
                return ngx.say(body)
            end

            -- change consumer with secrets ref: vault
            code, body = t('/apisix/admin/consumers',
                ngx.HTTP_PUT,
                [[{
                    "username": "jack",
                    "plugins": {
                        "hmac-auth": {
                            "key_id": "my-access-key",
                            "secret_key": "$secret://vault/test1/jack/secret_key"
                        }
                    }
                }]]
                )
            if code >= 300 then
                ngx.status = code
                return ngx.say(body)
            end

            -- set route
            code, body = t('/apisix/admin/routes/1',
                ngx.HTTP_PUT,
                [[{
                    "plugins": {
                        "hmac-auth": {}
                    },
                    "upstream": {
                        "nodes": {
                            "127.0.0.1:1980": 1
                        },
                        "type": "roundrobin"
                    },
                    "uri": "/hello"
                }]]
                )

            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- response_body
passed



=== TEST 2: store secret into vault
--- exec
VAULT_TOKEN='root' VAULT_ADDR='http://0.0.0.0:8200' vault kv put kv/apisix/jack secret_key=my-secret-key
--- response_body
Success! Data written to: kv/apisix/jack



=== TEST 3: verify: ok
--- config
location /t {
    content_by_lua_block {
        local ngx_time = ngx.time
        local ngx_http_time = ngx.http_time
        local core = require("apisix.core")
        local t = require("lib.test_admin")
        local hmac = require("resty.hmac")
        local ngx_encode_base64 = ngx.encode_base64

        local secret_key = "my-secret-key"
        local timestamp = ngx_time()
        local gmt = ngx_http_time(timestamp)
        local key_id = "my-access-key"
        local custom_header_a = "asld$%dfasf"
        local custom_header_b = "23879fmsldfk"

        local signing_string = {
            key_id,
            "GET /hello",
            "date: " .. gmt,
            "x-custom-header-a: " .. custom_header_a,
            "x-custom-header-b: " .. custom_header_b
        }
        signing_string = core.table.concat(signing_string, "\n") .. "\n"
        core.log.info("signing_string:", signing_string)

        local signature = hmac:new(secret_key, hmac.ALGOS.SHA256):final(signing_string)
        core.log.info("signature:", ngx_encode_base64(signature))
        local headers = {}
        headers["Date"] = gmt
        headers["Authorization"] = "Signature keyId=\"" .. key_id .. "\",algorithm=\"hmac-sha256\"" .. ",headers=\"@request-target date x-custom-header-a x-custom-header-b\",signature=\"" .. ngx_encode_base64(signature) .. "\""
        headers["x-custom-header-a"] = custom_header_a
        headers["x-custom-header-b"] = custom_header_b

        local code, body = t.test('/hello',
            ngx.HTTP_GET,
            "",
            nil,
            headers
        )

        ngx.status = code
        ngx.say(body)
    }
}
--- response_body
passed



=== TEST 4: set hmac-auth conf with the token in an env var: secret_key uses secret ref
--- config
    location /t {
        content_by_lua_block {
            local t = require("lib.test_admin").test
            -- put secret vault config
            local code, body = t('/apisix/admin/secrets/vault/test1',
                ngx.HTTP_PUT,
                [[{
                    "uri": "http://127.0.0.1:8200",
                    "prefix" : "kv/apisix",
                    "token" : "$ENV://VAULT_TOKEN"
                }]]
                )
            if code >= 300 then
                ngx.status = code
                return ngx.say(body)
            end
            -- change consumer with secrets ref: vault
            code, body = t('/apisix/admin/consumers',
                ngx.HTTP_PUT,
                [[{
                    "username": "jack",
                    "plugins": {
                        "hmac-auth": {
                            "key_id": "my-access-key",
                            "secret_key": "$secret://vault/test1/jack/secret_key"
                        }
                    }
                }]]
                )
            if code >= 300 then
                ngx.status = code
                return ngx.say(body)
            end
            -- set route
            code, body = t('/apisix/admin/routes/1',
                ngx.HTTP_PUT,
                [[{
                    "plugins": {
                        "hmac-auth": {}
                    },
                    "upstream": {
                        "nodes": {
                            "127.0.0.1:1980": 1
                        },
                        "type": "roundrobin"
                    },
                    "uri": "/hello"
                }]]
                )
            if code >= 300 then
                ngx.status = code
            end
            ngx.say(body)
        }
    }
--- response_body
passed



=== TEST 5: verify: ok
--- config
location /t {
    content_by_lua_block {
        local ngx_time = ngx.time
        local ngx_http_time = ngx.http_time
        local core = require("apisix.core")
        local t = require("lib.test_admin")
        local hmac = require("resty.hmac")
        local ngx_encode_base64 = ngx.encode_base64

        local secret_key = "my-secret-key"
        local timestamp = ngx_time()
        local gmt = ngx_http_time(timestamp)
        local key_id = "my-access-key"
        local custom_header_a = "asld$%dfasf"
        local custom_header_b = "23879fmsldfk"

        local signing_string = {
            key_id,
            "GET /hello",
            "date: " .. gmt,
            "x-custom-header-a: " .. custom_header_a,
            "x-custom-header-b: " .. custom_header_b
        }
        signing_string = core.table.concat(signing_string, "\n") .. "\n"
        core.log.info("signing_string:", signing_string)

        local signature = hmac:new(secret_key, hmac.ALGOS.SHA256):final(signing_string)
        core.log.info("signature:", ngx_encode_base64(signature))
        local headers = {}
        headers["Date"] = gmt
        headers["Authorization"] = "Signature keyId=\"" .. key_id .. "\",algorithm=\"hmac-sha256\"" .. ",headers=\"@request-target date x-custom-header-a x-custom-header-b\",signature=\"" .. ngx_encode_base64(signature) .. "\""
        headers["x-custom-header-a"] = custom_header_a
        headers["x-custom-header-b"] = custom_header_b

        local code, body = t.test('/hello',
            ngx.HTTP_GET,
            "",
            nil,
            headers
        )

        ngx.status = code
        ngx.say(body)
    }
}
--- response_body
passed