71 lines
2.3 KiB
Go
71 lines
2.3 KiB
Go
// Copyright 2026 Alibaba Group
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package app
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import (
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"regexp"
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"strings"
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apperrors "github.com/DingTalk-Real-AI/dingtalk-workspace-cli/internal/errors"
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"github.com/DingTalk-Real-AI/dingtalk-workspace-cli/pkg/configmeta"
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)
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const (
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envDWSAgentHost = "DWS_AGENT_HOST"
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headerDWSAgentHost = "x-dws-agent-host"
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maxAgentHostBytes = 64
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)
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var agentHostPattern = regexp.MustCompile(`^[a-z0-9][a-z0-9_-]*$`)
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func init() {
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configmeta.Register(configmeta.ConfigItem{
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Name: envDWSAgentHost,
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Category: configmeta.CategoryExternal,
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Description: "调用 DWS 的 Agent 运行形态标识；作为 x-dws-agent-host 发送供下游观测，本客户端不使用该值改变 PAT、鉴权或路由",
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Example: "cloud",
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})
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}
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// parseAgentHost normalizes and validates the caller-declared runtime-form
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// signal. Only surrounding ASCII spaces and tabs are trimmed; other control
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// or Unicode whitespace remains visible to validation and is rejected. An
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// unset or ASCII-whitespace-only value means "do not emit".
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func parseAgentHost(raw string) (string, error) {
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if strings.ContainsAny(raw, "\r\n") {
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return "", invalidAgentHostError()
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}
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value := strings.Trim(raw, " \t")
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if value == "" {
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return "", nil
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}
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if len(value) > maxAgentHostBytes {
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return "", invalidAgentHostError()
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}
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if !agentHostPattern.MatchString(value) {
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return "", invalidAgentHostError()
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}
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return value, nil
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}
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func invalidAgentHostError() error {
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// Do not include the raw environment value in the error: it is an
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// untrusted caller-controlled string and may contain sensitive data.
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return apperrors.NewValidation(
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"DWS_AGENT_HOST must be at most 64 bytes and match ^[a-z0-9][a-z0-9_-]*$",
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apperrors.WithReason("invalid_agent_host"),
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)
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}
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