118 lines
3.1 KiB
Go
118 lines
3.1 KiB
Go
package store
|
|
|
|
import (
|
|
"crypto/sha1"
|
|
"fmt"
|
|
"hash/crc64"
|
|
"html/template"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/microcosm-cc/bluemonday"
|
|
)
|
|
|
|
// Comment represents a single comment with optional reference to its parent
|
|
type Comment struct {
|
|
ID string `json:"id"`
|
|
ParentID string `json:"pid"`
|
|
Text string `json:"text"`
|
|
User User `json:"user"`
|
|
Locator Locator `json:"locator"`
|
|
Score int `json:"score"`
|
|
Votes map[string]bool `json:"votes"`
|
|
Timestamp time.Time `json:"time"`
|
|
Pin bool `json:"pin,omitempty"`
|
|
Edit *Edit `json:"edit,omitempty"`
|
|
Deleted bool `json:"delete,omitempty"`
|
|
}
|
|
|
|
// Locator keeps site and url of the post
|
|
type Locator struct {
|
|
SiteID string `json:"site,omitempty"`
|
|
URL string `json:"url"`
|
|
}
|
|
|
|
// User holds user-related info
|
|
type User struct {
|
|
Name string `json:"name"`
|
|
ID string `json:"id"`
|
|
Picture string `json:"picture"`
|
|
Profile string `json:"profile,omitempty"`
|
|
Admin bool `json:"admin"`
|
|
Blocked bool `json:"block,omitempty"`
|
|
IP string `json:"ip,omitempty"`
|
|
}
|
|
|
|
// Edit indication
|
|
type Edit struct {
|
|
Timestamp time.Time `json:"time"`
|
|
Summary string `json:"summary"`
|
|
}
|
|
|
|
// PostInfo holds summary for given post url
|
|
type PostInfo struct {
|
|
URL string `json:"url"`
|
|
Count int `json:"count"`
|
|
}
|
|
|
|
// BlockedUser holds id and ts for blocked user
|
|
type BlockedUser struct {
|
|
ID string `json:"id"`
|
|
Name string `json:"name"`
|
|
Timestamp time.Time `json:"time"`
|
|
}
|
|
|
|
// PrepareUntrusted preprocess comment received from untrusted source by clearing all
|
|
// autogen fields and reset everything users not supposed to provide
|
|
func (c *Comment) PrepareUntrusted() {
|
|
c.ID = "" // don't allow user to define ID, force auto-gen
|
|
c.Timestamp = time.Time{} // reset time, force auto-gen
|
|
c.Votes = make(map[string]bool)
|
|
c.Score = 0
|
|
c.Edit = nil
|
|
c.Pin = false
|
|
c.Deleted = false
|
|
}
|
|
|
|
// Sanitize clean dangerous html/js from the comment
|
|
func (c *Comment) Sanitize() {
|
|
p := bluemonday.UGCPolicy()
|
|
c.Text = p.Sanitize(c.Text)
|
|
c.User.ID = template.HTMLEscapeString(c.User.ID)
|
|
c.User.Name = template.HTMLEscapeString(c.User.Name)
|
|
c.User.Picture = p.Sanitize(c.User.Picture)
|
|
c.User.Profile = p.Sanitize(c.User.Profile)
|
|
|
|
c.Text = strings.Replace(c.Text, "\n", "", -1)
|
|
c.Text = strings.Replace(c.Text, "\t", "", -1)
|
|
}
|
|
|
|
// HashUserFields replace sensitive fields with hashes
|
|
func (c *Comment) HashUserFields() {
|
|
|
|
hashVal := func(val string) string {
|
|
if _, err := strconv.ParseUint(val, 16, 64); err == nil || val == "" {
|
|
return val // already hashed
|
|
}
|
|
h := sha1.New()
|
|
if _, err := h.Write([]byte(val)); err != nil {
|
|
// fail back to crc64
|
|
return fmt.Sprintf("%x", crc64.Checksum([]byte(val), crc64.MakeTable(crc64.ECMA)))
|
|
}
|
|
return fmt.Sprintf("%x", h.Sum(nil))
|
|
}
|
|
|
|
c.User.IP = hashVal(c.User.IP)
|
|
c.User.ID = hashVal(c.User.ID)
|
|
}
|
|
|
|
// SetDeleted clears comment info, reset to deleted state
|
|
func (c *Comment) SetDeleted() {
|
|
c.Text = ""
|
|
c.Score = 0
|
|
c.Votes = map[string]bool{}
|
|
c.Edit = nil
|
|
c.Deleted = true
|
|
}
|