143 lines
3.7 KiB
Go
143 lines
3.7 KiB
Go
package server
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import (
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"heckel.io/ntfy/util"
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"net/http"
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"time"
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)
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// List of possible events
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const (
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openEvent = "open"
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keepaliveEvent = "keepalive"
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messageEvent = "message"
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)
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const (
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messageIDLength = 10
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)
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// message represents a message published to a topic
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type message struct {
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ID string `json:"id"` // Random message ID
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Time int64 `json:"time"` // Unix time in seconds
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Event string `json:"event"` // One of the above
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Topic string `json:"topic"`
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Priority int `json:"priority,omitempty"`
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Tags []string `json:"tags,omitempty"`
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Click string `json:"click,omitempty"`
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Attachment *attachment `json:"attachment,omitempty"`
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Title string `json:"title,omitempty"`
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Message string `json:"message,omitempty"`
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}
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type attachment struct {
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Name string `json:"name"`
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Type string `json:"type,omitempty"`
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Size int64 `json:"size,omitempty"`
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Expires int64 `json:"expires,omitempty"`
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URL string `json:"url"`
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Owner string `json:"-"` // IP address of uploader, used for rate limiting
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}
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// messageEncoder is a function that knows how to encode a message
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type messageEncoder func(msg *message) (string, error)
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// newMessage creates a new message with the current timestamp
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func newMessage(event, topic, msg string) *message {
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return &message{
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ID: util.RandomString(messageIDLength),
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Time: time.Now().Unix(),
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Event: event,
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Topic: topic,
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Priority: 0,
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Tags: nil,
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Title: "",
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Message: msg,
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}
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}
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// newOpenMessage is a convenience method to create an open message
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func newOpenMessage(topic string) *message {
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return newMessage(openEvent, topic, "")
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}
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// newKeepaliveMessage is a convenience method to create a keepalive message
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func newKeepaliveMessage(topic string) *message {
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return newMessage(keepaliveEvent, topic, "")
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}
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// newDefaultMessage is a convenience method to create a notification message
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func newDefaultMessage(topic, msg string) *message {
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return newMessage(messageEvent, topic, msg)
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}
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type sinceTime time.Time
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func (t sinceTime) IsAll() bool {
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return t == sinceAllMessages
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}
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func (t sinceTime) IsNone() bool {
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return t == sinceNoMessages
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}
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func (t sinceTime) Time() time.Time {
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return time.Time(t)
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}
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var (
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sinceAllMessages = sinceTime(time.Unix(0, 0))
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sinceNoMessages = sinceTime(time.Unix(1, 0))
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)
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type queryFilter struct {
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Message string
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Title string
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Tags []string
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Priority []int
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}
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func parseQueryFilters(r *http.Request) (*queryFilter, error) {
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messageFilter := readParam(r, "x-message", "message", "m")
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titleFilter := readParam(r, "x-title", "title", "t")
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tagsFilter := util.SplitNoEmpty(readParam(r, "x-tags", "tags", "tag", "ta"), ",")
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priorityFilter := make([]int, 0)
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for _, p := range util.SplitNoEmpty(readParam(r, "x-priority", "priority", "prio", "p"), ",") {
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priority, err := util.ParsePriority(p)
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if err != nil {
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return nil, err
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}
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priorityFilter = append(priorityFilter, priority)
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}
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return &queryFilter{
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Message: messageFilter,
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Title: titleFilter,
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Tags: tagsFilter,
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Priority: priorityFilter,
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}, nil
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}
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func (q *queryFilter) Pass(msg *message) bool {
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if msg.Event != messageEvent {
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return true // filters only apply to messages
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}
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if q.Message != "" && msg.Message != q.Message {
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return false
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}
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if q.Title != "" && msg.Title != q.Title {
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return false
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}
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messagePriority := msg.Priority
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if messagePriority == 0 {
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messagePriority = 3 // For query filters, default priority (3) is the same as "not set" (0)
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}
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if len(q.Priority) > 0 && !util.InIntList(q.Priority, messagePriority) {
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return false
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}
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if len(q.Tags) > 0 && !util.InStringListAll(msg.Tags, q.Tags) {
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return false
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}
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return true
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}
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