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feat(hide): 密码可见隐藏块，发帖双栏预览与门禁体验修复

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增加密码解锁与游客签名 cookie；发帖页对齐 1440 并默认双栏预览；修复 locked 解析、按钮对比度与回复聚焦。

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
姜十三
2026-09-17 05:46:42 +08:00
parent 01e2fd05ca
commit c44b0efa7d
23 changed files with 911 additions and 132 deletions
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162
backend/markdown/hide.go
View File

@@ -6,47 +6,59 @@ import (
"fmt"
"strconv"
"strings"
"unicode/utf8"
)
const (
HideKindLogin = "login"
HideKindReply = "reply"
HideKindPoints = "points"
HideKindLogin = "login"
HideKindReply = "reply"
HideKindPoints = "points"
HideKindPassword = "password"
)
const (
// MaxHidePasswordLen 密码可见块密码最大长度（字符）
MaxHidePasswordLen = 64
// MinHidePasswordLen 密码最小长度
MinHidePasswordLen = 1
)
// HideBlock 正文中的一段隐藏内容
type HideBlock struct {
Kind string // login | reply | points
Points int // 仅 points 有效
Body string // 块内 Markdown（不含开闭标记行）
Start int // 开标记行在 lines 中的下标
End int // 闭标记行在 lines 中的下标（含）
Locked bool // 开标记是否已带 locked（脱敏输出）
Kind string // login | reply | points | password
Points int // 仅 points 有效
Password string // 仅 password 有效（原文；脱敏输出时清空）
Body string // 块内 Markdown（不含开闭标记行）
Start int // 开标记行在 lines 中的下标
End int // 闭标记行在 lines 中的下标（含）
Locked bool // 开标记是否已带 locked（脱敏输出）
Index int // 在全文隐藏块列表中的下标（0-based）
}
// DerivedAccess 由正文隐藏块派生的帖级可见性
type DerivedAccess struct {
Access string // public | login | reply | points | mixed
Access string // public | login | reply | points | password | mixed
Points int // 所有积分块价格之和
}
// ViewerCaps 读者对隐藏块的能力（由 service 填充）
type ViewerCaps struct {
Bypass bool // 作者 / 版主
LoggedIn bool
HasReplied bool
PointsPaid bool // 已支付本帖积分解锁
Bypass bool // 作者 / 版主
LoggedIn bool
HasReplied bool
PointsPaid bool // 已支付本帖积分解锁
PasswordUnlocked map[int]bool // 已凭密码解锁的隐藏块下标
}
var (
ErrHideNested = errors.New("隐藏块不可嵌套")
ErrHideUnclosed = errors.New("隐藏块未正确闭合")
ErrHideInvalid = errors.New("隐藏块语法无效")
ErrHidePointsNeed = errors.New("积分可见块须指定 1–100000 的积分")
ErrHideNested = errors.New("隐藏块不可嵌套")
ErrHideUnclosed = errors.New("隐藏块未正确闭合")
ErrHideInvalid = errors.New("隐藏块语法无效")
ErrHidePointsNeed = errors.New("积分可见块须指定 1–100000 的积分")
ErrHidePasswordNeed = errors.New("密码可见块须设置 1–64 字符且不含空格的密码")
)
// ParseHideBlocks 扫描正文中的 :::hide 块（忽略代码围栏内伪语法）。
// 校验失败返回 error（用于 Create/Update）。
func ParseHideBlocks(content string) ([]HideBlock, error) {
lines := splitLines(content)
var blocks []HideBlock
@@ -65,7 +77,7 @@ func ParseHideBlocks(content string) ([]HideBlock, error) {
continue
}
if kind, pts, locked, ok := parseOpenMarker(trimmed); ok {
if kind, pts, pwd, locked, ok := parseOpenMarker(trimmed); ok {
j := i + 1
bodyLines := make([]string, 0)
foundClose := false
@@ -83,7 +95,7 @@ func ParseHideBlocks(content string) ([]HideBlock, error) {
j++
continue
}
if _, _, _, isOpen := parseOpenMarker(inner); isOpen {
if _, _, _, _, isOpen := parseOpenMarker(inner); isOpen {
return nil, ErrHideNested
}
if isCloseMarker(inner) {
@@ -101,13 +113,23 @@ func ParseHideBlocks(content string) ([]HideBlock, error) {
return nil, ErrHidePointsNeed
}
}
if kind == HideKindPassword {
// 已 locked 的脱敏行无密码，仅服务端原文必须带合法密码
if !locked {
if err := validatePassword(pwd); err != nil {
return nil, err
}
}
}
blocks = append(blocks, HideBlock{
Kind: kind,
Points: pts,
Body: strings.Join(bodyLines, "\n"),
Start: i,
End: j,
Locked: locked,
Kind: kind,
Points: pts,
Password: pwd,
Body: strings.Join(bodyLines, "\n"),
Start: i,
End: j,
Locked: locked,
Index: len(blocks),
})
i = j + 1
continue
@@ -153,7 +175,7 @@ func DeriveAccessFromContent(content string) (DerivedAccess, error) {
}
// SanitizeForViewer 按读者能力脱敏：未满足条件的块清空正文并加 locked。
// fullyLocked 表示读者当前看不到任何可见正文（整篇都在锁块里或公开区为空）。
// 密码块即使已解锁，也不向读者回传明文密码（开标记写成 :::hide password）。
func SanitizeForViewer(content string, caps ViewerCaps) (sanitized string, fullyLocked bool) {
blocks, err := ParseHideBlocks(content)
if err != nil {
@@ -180,7 +202,7 @@ func SanitizeForViewer(content string, caps ViewerCaps) (sanitized string, fully
}
if blockUnlocked(b, caps) {
out = append(out, openMarkerLine(b.Kind, b.Points, false))
out = append(out, openMarkerLine(b.Kind, b.Points, "", false))
if b.Body != "" {
out = append(out, splitLines(b.Body)...)
if strings.TrimSpace(b.Body) != "" {
@@ -189,7 +211,7 @@ func SanitizeForViewer(content string, caps ViewerCaps) (sanitized string, fully
}
out = append(out, ":::")
} else {
out = append(out, openMarkerLine(b.Kind, b.Points, true))
out = append(out, openMarkerLine(b.Kind, b.Points, "", true))
out = append(out, ":::")
}
cursor = b.End + 1
@@ -204,10 +226,28 @@ func SanitizeForViewer(content string, caps ViewerCaps) (sanitized string, fully
return strings.Join(out, "\n"), !anyVisible
}
// MatchPasswordBlocks 返回密码匹配的隐藏块下标
func MatchPasswordBlocks(content, password string) ([]int, error) {
blocks, err := ParseHideBlocks(content)
if err != nil {
return nil, err
}
var hit []int
for _, b := range blocks {
if b.Kind != HideKindPassword {
continue
}
if constantTimeEqual(b.Password, password) {
hit = append(hit, b.Index)
}
}
return hit, nil
}
// WrapContentAsHide 将整篇正文包进单一隐藏块（旧帖迁移用）
func WrapContentAsHide(kind string, points int, content string) string {
body := strings.TrimRight(content, "\n")
open := openMarkerLine(kind, points, false)
open := openMarkerLine(kind, points, "", false)
if body == "" {
return open + "\n:::\n"
}
@@ -231,12 +271,15 @@ func blockUnlocked(b HideBlock, caps ViewerCaps) bool {
return caps.HasReplied
case HideKindPoints:
return caps.PointsPaid
case HideKindPassword:
return caps.PasswordUnlocked != nil && caps.PasswordUnlocked[b.Index]
default:
return true
}
}
func openMarkerLine(kind string, points int, locked bool) string {
// openMarkerLine 生成开标记。密码仅在原文存储时写入；对外脱敏输出传空 password。
func openMarkerLine(kind string, points int, password string, locked bool) string {
var b strings.Builder
b.WriteString(":::hide ")
b.WriteString(kind)
@@ -244,50 +287,72 @@ func openMarkerLine(kind string, points int, locked bool) string {
b.WriteByte(' ')
b.WriteString(strconv.Itoa(points))
}
if kind == HideKindPassword && password != "" && !locked {
b.WriteByte(' ')
b.WriteString(password)
}
if locked {
b.WriteString(" locked")
}
return b.String()
}
func parseOpenMarker(trimmed string) (kind string, points int, locked bool, ok bool) {
// parseOpenMarker 解析 :::hide <kind> [points|password] [locked]
func parseOpenMarker(trimmed string) (kind string, points int, password string, locked bool, ok bool) {
if !strings.HasPrefix(trimmed, ":::hide") {
return "", 0, false, false
return "", 0, "", false, false
}
rest := strings.TrimSpace(trimmed[len(":::hide"):])
if rest == "" {
return "", 0, false, false
return "", 0, "", false, false
}
parts := strings.Fields(rest)
if len(parts) == 0 {
return "", 0, false, false
return "", 0, "", false, false
}
kind = parts[0]
switch kind {
case HideKindLogin, HideKindReply, HideKindPoints:
case HideKindLogin, HideKindReply, HideKindPoints, HideKindPassword:
default:
return "", 0, false, false
return "", 0, "", false, false
}
idx := 1
if kind == HideKindPoints {
if idx >= len(parts) {
return "", 0, false, false
return "", 0, "", false, false
}
n, err := strconv.Atoi(parts[idx])
if err != nil {
return "", 0, false, false
return "", 0, "", false, false
}
points = n
idx++
} else if kind == HideKindPassword {
// 允许：:::hide password locked（脱敏）或 :::hide password <pwd> [locked]
if idx < len(parts) && parts[idx] != "locked" {
password = parts[idx]
idx++
}
}
for ; idx < len(parts); idx++ {
if parts[idx] == "locked" {
locked = true
} else {
return "", 0, false, false
return "", 0, "", false, false
}
}
return kind, points, locked, true
return kind, points, password, locked, true
}
func validatePassword(pwd string) error {
if pwd == "" || strings.ContainsAny(pwd, " \t") {
return ErrHidePasswordNeed
}
n := utf8.RuneCountInString(pwd)
if n < MinHidePasswordLen || n > MaxHidePasswordLen {
return ErrHidePasswordNeed
}
return nil
}
func isCloseMarker(trimmed string) bool {
@@ -316,9 +381,22 @@ func ValidateHideContent(content string) error {
return fmt.Errorf("隐藏块未正确闭合，请检查 ::: 标记")
case errors.Is(err, ErrHidePointsNeed):
return fmt.Errorf("积分可见块须指定 1–100000 的积分")
case errors.Is(err, ErrHidePasswordNeed):
return fmt.Errorf("密码可见块须设置 1–64 字符且不含空格的密码")
case errors.Is(err, ErrHideInvalid):
return fmt.Errorf("隐藏块语法无效")
default:
return err
}
}
func constantTimeEqual(a, b string) bool {
if len(a) != len(b) {
return false
}
var v byte
for i := 0; i < len(a); i++ {
v |= a[i] ^ b[i]
}
return v == 0
}