fix(audit): 第二批审计修复 — P0 生产 Bug、安全加固、性能优化、缓存一致性、代码质量
基于 backend-code-audit 审计报告,修复剩余 P0/P1/P2 共 34 项问题: P0 生产 Bug: - 修复 time.Since(time.Now()) 计时逻辑错误 (P0-03) - generateRandomID 改用 crypto/rand 替代固定索引 (P0-04) - IncrementQuotaUsed 重写为 Ent 原子操作消除 TOCTOU 竞态 (P0-05) 安全加固: - gateway/openai handler 错误响应替换为泛化消息,防止内部信息泄露 (P1-14) - usage_log_repo dateFormat 参数改用白名单映射,防止 SQL 注入 (P1-16) - 默认配置安全加固:sslmode=prefer、response_headers=true、mode=release (P1-18/19, P2-15) 性能优化: - gateway handler 循环内 defer 替换为显式 releaseWait 闭包 (P1-02) - group_repo/promo_code_repo Count 前 Clone 查询避免状态污染 (P1-03) - usage_log_repo 四个查询添加 LIMIT 10000 防止 OOM (P1-07) - GetBatchUsageStats 添加时间范围参数,默认最近 30 天 (P1-10) - ip.go CIDR 预编译为包级变量 (P1-11) - BatchUpdateCredentials 重构为先验证后更新 (P1-13) 缓存一致性: - billing_cache 添加 jitteredTTL 防止缓存雪崩 (P2-10) - DeductUserBalance/UpdateSubscriptionUsage 错误传播修复 (P2-12) - UserService.UpdateBalance 成功后异步失效 billingCache (P2-13) 代码质量: - search 截断改为按 rune 处理,支持多字节字符 (P2-01) - TLS Handshake 改为 HandshakeContext 支持 context 取消 (P2-07) - CORS 预检添加 Access-Control-Max-Age: 86400 (P2-16) 测试覆盖: - 新增 user_service_test.go(UpdateBalance 缓存失效 6 个用例) - 新增 batch_update_credentials_test.go(fail-fast + 类型验证 7 个用例) - 新增 response_transformer_test.go、ip_test.go、usage_log_repo_unit_test.go、search_truncate_test.go - 集成测试:IncrementQuotaUsed 并发测试、billing_cache 错误传播测试 - config_test.go 补充 server.mode/sslmode 默认值断言 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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51
backend/internal/pkg/ip/ip_test.go
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51
backend/internal/pkg/ip/ip_test.go
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//go:build unit
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package ip
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import (
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"testing"
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"github.com/stretchr/testify/require"
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)
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func TestIsPrivateIP(t *testing.T) {
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tests := []struct {
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name string
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ip string
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expected bool
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}{
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// 私有 IPv4
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{"10.x 私有地址", "10.0.0.1", true},
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{"10.x 私有地址段末", "10.255.255.255", true},
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{"172.16.x 私有地址", "172.16.0.1", true},
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{"172.31.x 私有地址", "172.31.255.255", true},
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{"192.168.x 私有地址", "192.168.1.1", true},
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{"127.0.0.1 本地回环", "127.0.0.1", true},
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{"127.x 回环段", "127.255.255.255", true},
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// 公网 IPv4
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{"8.8.8.8 公网 DNS", "8.8.8.8", false},
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{"1.1.1.1 公网", "1.1.1.1", false},
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{"172.15.255.255 非私有", "172.15.255.255", false},
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{"172.32.0.0 非私有", "172.32.0.0", false},
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{"11.0.0.1 公网", "11.0.0.1", false},
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// IPv6
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{"::1 IPv6 回环", "::1", true},
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{"fc00:: IPv6 私有", "fc00::1", true},
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{"fd00:: IPv6 私有", "fd00::1", true},
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{"2001:db8::1 IPv6 公网", "2001:db8::1", false},
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// 无效输入
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{"空字符串", "", false},
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{"非法字符串", "not-an-ip", false},
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{"不完整 IP", "192.168", false},
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}
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for _, tc := range tests {
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t.Run(tc.name, func(t *testing.T) {
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got := isPrivateIP(tc.ip)
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require.Equal(t, tc.expected, got, "isPrivateIP(%q)", tc.ip)
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})
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}
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}
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