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Merge pull request #225 from binwiederhier/actions-parsing 

WIP: More advanced action parsing
This commit is contained in:
Philipp C. Heckel 2022-04-27 11:24:40 -04:00 committed by GitHub
parent 53646737e8 72aea2613a
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8 changed files with 519 additions and 189 deletions
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61
docs/publish.md
View File

@ -850,27 +850,32 @@ To define actions using the `X-Actions` header (or any of its aliases: `Actions`
<action1>, <label1>, paramN=... [; <action2>, <label2>, ...]
```
The `action=` and `label=` prefix are optional in all actions, and the `url=` prefix is optional in the `view` and `http` action.
The format has **some limitations**: You cannot use `,` or `;` in any of the values, and depending on your language/library, UTF-8
characters may not work. Use the [JSON array format](#using-a-json-array) instead to overcome these limitations.
Multiple actions are separated by a semicolon (`;`), and key/value pairs are separated by commas (`,`). Values may be
quoted with double quotes (`"`) or single quotes (`'`) if the value itself contains commas or semicolons.
The `action=` and `label=` prefix are optional in all actions, and the `url=` prefix is optional in the `view` and
`http` action. The only limitation of this format is that depending on your language/library, UTF-8 characters may not
work. If they don't, use the [JSON array format](#using-a-json-array) instead.
As an example, here's how you can create the above notification using this format. Refer to the [`view` action](#open-websiteapp) and
[`http` action](#send-http-request) section for details on the specific actions:
=== "Command line (curl)"
```
body='{"temperature": 65}'
curl \
-d "You left the house. Turn down the A/C?" \
-H "Actions: view, Open portal, https://home.nest.com/, clear=true; \
http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65" \
ntfy.sh/myhome
http, Turn down, https://api.nest.com/, body='$body'" \
ntfy.sh/myhome
```
=== "ntfy CLI"
```
body='{"temperature": 65}'
ntfy publish \
--actions="view, Open portal, https://home.nest.com/, clear=true; \
http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65" \
http, Turn down, https://api.nest.com/, body='$body'" \
myhome \
"You left the house. Turn down the A/C?"
```
@ -879,7 +884,7 @@ As an example, here's how you can create the above notification using this forma
``` http
POST /myhome HTTP/1.1
Host: ntfy.sh
Actions: view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65
Actions: view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/, body='{"temperature": 65}'
You left the house. Turn down the A/C?
```
@ -890,7 +895,7 @@ As an example, here's how you can create the above notification using this forma
method: 'POST',
body: 'You left the house. Turn down the A/C?',
headers: {
'Actions': 'view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65'
'Actions': 'view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/, body=\'{"temperature": 65}\''
}
})
```
@ -898,14 +903,14 @@ As an example, here's how you can create the above notification using this forma
=== "Go"
``` go
req, _ := http.NewRequest("POST", "https://ntfy.sh/myhome", strings.NewReader("You left the house. Turn down the A/C?"))
req.Header.Set("Actions", "view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65")
req.Header.Set("Actions", "view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/, body='{\"temperature\": 65}'")
http.DefaultClient.Do(req)
```
=== "PowerShell"
``` powershell
$uri = "https://ntfy.sh/myhome"
$headers = @{ Actions="view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65" }
$headers = @{ Actions="view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/, body='{\"temperature\": 65}'" }
$body = "You left the house. Turn down the A/C?"
Invoke-RestMethod -Method 'Post' -Uri $uri -Headers $headers -Body $body -UseBasicParsing
```
@ -914,7 +919,7 @@ As an example, here's how you can create the above notification using this forma
``` python
requests.post("https://ntfy.sh/myhome",
data="You left the house. Turn down the A/C?",
headers={ "Actions": "view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65" })
headers={ "Actions": "view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/, body='{\"temperature\": 65}'" })
```
=== "PHP"
@ -924,7 +929,7 @@ As an example, here's how you can create the above notification using this forma
'method' => 'POST',
'header' =>
"Content-Type: text/plain\r\n" .
"Actions: view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/device/XZ1D2, body=target_temp_f=65",
"Actions: view, Open portal, https://home.nest.com/, clear=true; http, Turn down, https://api.nest.com/, body='{\"temperature\": 65}'",
'content' => 'You left the house. Turn down the A/C?'
]
]));
@ -950,8 +955,8 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
{
"action": "http",
"label": "Turn down",
"url": "https://api.nest.com/device/XZ1D2",
"body": "target_temp_f=65"
"url": "https://api.nest.com/",
"body": "{\"temperature\": 65}"
}
]
}'
@ -970,8 +975,8 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
{
"action": "http",
"label": "Turn down",
"url": "https://api.nest.com/device/XZ1D2",
"body": "target_temp_f=65"
"url": "https://api.nest.com/",
"body": "{\"temperature\": 65}"
}
]' \
myhome \
@ -996,8 +1001,8 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
{
"action": "http",
"label": "Turn down",
"url": "https://api.nest.com/device/XZ1D2",
"body": "target_temp_f=65"
"url": "https://api.nest.com/",
"body": "{\"temperature\": 65}"
}
]
}
@ -1020,8 +1025,8 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
{
action: "http",
label: "Turn down",
url: "https://api.nest.com/device/XZ1D2",
body: "target_temp_f=65"
url: "https://api.nest.com/",
body: "{\"temperature\": 65}"
}
]
})
@ -1046,8 +1051,8 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
{
"action": "http",
"label": "Turn down",
"url": "https://api.nest.com/device/XZ1D2",
"body": "target_temp_f=65"
"url": "https://api.nest.com/",
"body": "{\"temperature\": 65}"
}
]
}`
@ -1071,8 +1076,8 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
@{
"action"="http",
"label"="Turn down"
"url"="https://api.nest.com/device/XZ1D2"
"body"="target_temp_f=65"
"url"="https://api.nest.com/"
"body"="{\"temperature\": 65}"
}
)
} | ConvertTo-Json
@ -1095,8 +1100,8 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
{
"action": "http",
"label": "Turn down",
"url": "https://api.nest.com/device/XZ1D2",
"body": "target_temp_f=65"
"url": "https://api.nest.com/",
"body": "{\"temperature\": 65}"
}
]
})
@ -1122,11 +1127,11 @@ Alternatively, the same actions can be defined as **JSON array**, if the notific
[
"action": "http",
"label": "Turn down",
"url": "https://api.nest.com/device/XZ1D2",
"url": "https://api.nest.com/",
"headers": [
"Authorization": "Bearer ..."
],
"body": "target_temp_f=65"
"body": "{\"temperature\": 65}"
]
]
])

16
docs/releases.md
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@ -2,6 +2,22 @@
Binaries for all releases can be found on the GitHub releases pages for the [ntfy server](https://github.com/binwiederhier/ntfy/releases)
and the [ntfy Android app](https://github.com/binwiederhier/ntfy-android/releases).
<!--
## ntfy Android app v1.13.0 (UNRELEASED)
Bugs:
* Accurate naming of "mute notifications" from "pause notifications" ([#224](https://github.com/binwiederhier/ntfy/issues/224),
thanks to [@shadow00](https://github.com/shadow00) for reporting)
## ntfy server v1.22.0 (UNRELEASED)
**Features:**
* Better parsing of the user actions, allowing quotes (no ticket)
-->
## ntfy Android app v1.12.0
Released Apr 25, 2022

307
server/actions.go Normal file
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@ -0,0 +1,307 @@
package server
import (
"encoding/json"
"errors"
"fmt"
"heckel.io/ntfy/util"
"regexp"
"strings"
"unicode/utf8"
)
const (
actionIDLength = 10
actionEOF = rune(0)
actionsMax = 3
)
const (
actionView = "view"
actionBroadcast = "broadcast"
actionHTTP = "http"
)
var (
actionsAll = []string{actionView, actionBroadcast, actionHTTP}
actionsWithURL = []string{actionView, actionHTTP}
actionsKeyRegex = regexp.MustCompile(`^([-.\w]+)\s*=\s*`)
)
type actionParser struct {
input string
pos int
}
// parseActions parses the actions string as described in https://ntfy.sh/docs/publish/#action-buttons.
// It supports both a JSON representation (if the string begins with "[", see parseActionsFromJSON),
// and the "simple" format, which is more human-readable, but harder to parse (see parseActionsFromSimple).
func parseActions(s string) (actions []*action, err error) {
// Parse JSON or simple format
s = strings.TrimSpace(s)
if strings.HasPrefix(s, "[") {
actions, err = parseActionsFromJSON(s)
} else {
actions, err = parseActionsFromSimple(s)
}
if err != nil {
return nil, err
}
// Add ID field, ensure correct uppercase/lowercase
for i := range actions {
actions[i].ID = util.RandomString(actionIDLength)
actions[i].Action = strings.ToLower(actions[i].Action)
actions[i].Method = strings.ToUpper(actions[i].Method)
}
// Validate
if len(actions) > actionsMax {
return nil, fmt.Errorf("only %d actions allowed", actionsMax)
}
for _, action := range actions {
if !util.InStringList(actionsAll, action.Action) {
return nil, fmt.Errorf("action '%s' unknown", action.Action)
} else if action.Label == "" {
return nil, fmt.Errorf("parameter 'label' is required")
} else if util.InStringList(actionsWithURL, action.Action) && action.URL == "" {
return nil, fmt.Errorf("parameter 'url' is required for action '%s'", action.Action)
} else if action.Action == actionHTTP && util.InStringList([]string{"GET", "HEAD"}, action.Method) && action.Body != "" {
return nil, fmt.Errorf("parameter 'body' cannot be set if method is %s", action.Method)
}
}
return actions, nil
}
// parseActionsFromJSON converts a JSON array into an array of actions
func parseActionsFromJSON(s string) ([]*action, error) {
actions := make([]*action, 0)
if err := json.Unmarshal([]byte(s), &actions); err != nil {
return nil, err
}
return actions, nil
}
// parseActionsFromSimple parses the "simple" actions string (as described in
// https://ntfy.sh/docs/publish/#action-buttons), into an array of actions.
//
// It can parse an actions string like this:
// view, "Look ma, commas and \"quotes\" too", url=https://..; action=broadcast, ...
//
// It works by advancing the position ("pos") through the input string ("input").
//
// The parser is heavily inspired by https://go.dev/src/text/template/parse/lex.go (which
// is described by Rob Pike in this video: https://www.youtube.com/watch?v=HxaD_trXwRE),
// though it does not use state functions at all.
//
// Other resources:
// https://adampresley.github.io/2015/04/12/writing-a-lexer-and-parser-in-go-part-1.html
// https://github.com/adampresley/sample-ini-parser/blob/master/services/lexer/lexer/Lexer.go
// https://github.com/benbjohnson/sql-parser/blob/master/scanner.go
// https://blog.gopheracademy.com/advent-2014/parsers-lexers/
func parseActionsFromSimple(s string) ([]*action, error) {
if !utf8.ValidString(s) {
return nil, errors.New("invalid string")
}
parser := &actionParser{
pos: 0,
input: s,
}
return parser.Parse()
}
// Parse loops trough parseAction() until the end of the string is reached
func (p *actionParser) Parse() ([]*action, error) {
actions := make([]*action, 0)
for !p.eof() {
a, err := p.parseAction()
if err != nil {
return nil, err
}
actions = append(actions, a)
}
return actions, nil
}
// parseAction parses the individual sections of an action using parseSection into key/value pairs,
// and then uses populateAction to interpret the keys/values. The function terminates
// when EOF or ";" is reached.
func (p *actionParser) parseAction() (*action, error) {
a := newAction()
section := 0
for {
key, value, last, err := p.parseSection()
if err != nil {
return nil, err
}
if err := populateAction(a, section, key, value); err != nil {
return nil, err
}
p.slurpSpaces()
if last {
return a, nil
}
section++
}
}
// populateAction is the "business logic" of the parser. It applies the key/value
// pair to the action instance.
func populateAction(newAction *action, section int, key, value string) error {
// Auto-expand keys based on their index
if key == "" && section == 0 {
key = "action"
} else if key == "" && section == 1 {
key = "label"
} else if key == "" && section == 2 && util.InStringList(actionsWithURL, newAction.Action) {
key = "url"
}
// Validate
if key == "" {
return fmt.Errorf("term '%s' unknown", value)
}
// Populate
if strings.HasPrefix(key, "headers.") {
newAction.Headers[strings.TrimPrefix(key, "headers.")] = value
} else if strings.HasPrefix(key, "extras.") {
newAction.Extras[strings.TrimPrefix(key, "extras.")] = value
} else {
switch strings.ToLower(key) {
case "action":
newAction.Action = value
case "label":
newAction.Label = value
case "clear":
lvalue := strings.ToLower(value)
if !util.InStringList([]string{"true", "yes", "1", "false", "no", "0"}, lvalue) {
return fmt.Errorf("'clear=%s' not allowed", value)
}
newAction.Clear = lvalue == "true" || lvalue == "yes" || lvalue == "1"
case "url":
newAction.URL = value
case "method":
newAction.Method = value
case "body":
newAction.Body = value
default:
return fmt.Errorf("key '%s' unknown", key)
}
}
return nil
}
// parseSection parses a section ("key=value") and returns a key/value pair. It terminates
// when EOF or "," is reached.
func (p *actionParser) parseSection() (key string, value string, last bool, err error) {
p.slurpSpaces()
key = p.parseKey()
r, w := p.peek()
if isSectionEnd(r) {
p.pos += w
last = isLastSection(r)
return
} else if r == '"' || r == '\'' {
value, last, err = p.parseQuotedValue(r)
return
}
value, last = p.parseValue()
return
}
// parseKey uses a regex to determine whether the current position is a key definition ("key =")
// and returns the key if it is, or an empty string otherwise.
func (p *actionParser) parseKey() string {
matches := actionsKeyRegex.FindStringSubmatch(p.input[p.pos:])
if len(matches) == 2 {
p.pos += len(matches[0])
return matches[1]
}
return ""
}
// parseValue reads the input until EOF, "," or ";" and returns the value string. Unlike parseQuotedValue,
// this function does not support "," or ";" in the value itself, and spaces in the beginning and end of the
// string are trimmed.
func (p *actionParser) parseValue() (value string, last bool) {
start := p.pos
for {
r, w := p.peek()
if isSectionEnd(r) {
last = isLastSection(r)
value = strings.TrimSpace(p.input[start:p.pos])
p.pos += w
return
}
p.pos += w
}
}
// parseQuotedValue reads the input until it finds an unescaped end quote character ("), and then
// advances the position beyond the section end. It supports quoting strings using backslash (\).
func (p *actionParser) parseQuotedValue(quote rune) (value string, last bool, err error) {
p.pos++
start := p.pos
var prev rune
for {
r, w := p.peek()
if r == actionEOF {
err = fmt.Errorf("unexpected end of input, quote started at position %d", start)
return
} else if r == quote && prev != '\\' {
value = p.input[start:p.pos]
p.pos += w
// Advance until section end (after "," or ";")
p.slurpSpaces()
r, w := p.peek()
last = isLastSection(r)
if !isSectionEnd(r) {
err = fmt.Errorf("unexpected character '%c' at position %d", r, p.pos)
return
}
p.pos += w
return
}
prev = r
p.pos += w
}
}
// slurpSpaces reads all space characters and advances the position
func (p *actionParser) slurpSpaces() {
for {
r, w := p.peek()
if r == actionEOF || !isSpace(r) {
return
}
p.pos += w
}
}
// peek returns the next run and its width
func (p *actionParser) peek() (rune, int) {
if p.eof() {
return actionEOF, 0
}
return utf8.DecodeRuneInString(p.input[p.pos:])
}
// eof returns true if the end of the input has been reached
func (p *actionParser) eof() bool {
return p.pos >= len(p.input)
}
func isSpace(r rune) bool {
return r == ' ' || r == '\t' || r == '\r' || r == '\n'
}
func isSectionEnd(r rune) bool {
return r == actionEOF || r == ';' || r == ','
}
func isLastSection(r rune) bool {
return r == actionEOF || r == ';'
}

155
server/actions_test.go Normal file
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@ -0,0 +1,155 @@
package server
import (
"github.com/stretchr/testify/require"
"testing"
)
func TestParseActions(t *testing.T) {
actions, err := parseActions("[]")
require.Nil(t, err)
require.Empty(t, actions)
// Basic test
actions, err = parseActions("action=http, label=Open door, url=https://door.lan/open; view, Show portal, https://door.lan")
require.Nil(t, err)
require.Equal(t, 2, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Open door", actions[0].Label)
require.Equal(t, "https://door.lan/open", actions[0].URL)
require.Equal(t, "view", actions[1].Action)
require.Equal(t, "Show portal", actions[1].Label)
require.Equal(t, "https://door.lan", actions[1].URL)
// JSON
actions, err = parseActions(`[{"action":"http","label":"Open door","url":"https://door.lan/open"}, {"action":"view","label":"Show portal","url":"https://door.lan"}]`)
require.Nil(t, err)
require.Equal(t, 2, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Open door", actions[0].Label)
require.Equal(t, "https://door.lan/open", actions[0].URL)
require.Equal(t, "view", actions[1].Action)
require.Equal(t, "Show portal", actions[1].Label)
require.Equal(t, "https://door.lan", actions[1].URL)
// Other params
actions, err = parseActions("action=http, label=Open door, url=https://door.lan/open, body=this is a body, method=PUT")
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Open door", actions[0].Label)
require.Equal(t, "https://door.lan/open", actions[0].URL)
require.Equal(t, "PUT", actions[0].Method)
require.Equal(t, "this is a body", actions[0].Body)
// Extras with underscores
actions, err = parseActions("action=broadcast, label=Do a thing, extras.command=some command, extras.some_param=a parameter")
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "broadcast", actions[0].Action)
require.Equal(t, "Do a thing", actions[0].Label)
require.Equal(t, 2, len(actions[0].Extras))
require.Equal(t, "some command", actions[0].Extras["command"])
require.Equal(t, "a parameter", actions[0].Extras["some_param"])
// Headers with dashes
actions, err = parseActions("action=http, label=Send request, url=http://example.com, method=GET, headers.Content-Type=application/json, headers.Authorization=Basic sdasffsf")
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Send request", actions[0].Label)
require.Equal(t, 2, len(actions[0].Headers))
require.Equal(t, "application/json", actions[0].Headers["Content-Type"])
require.Equal(t, "Basic sdasffsf", actions[0].Headers["Authorization"])
// Quotes
actions, err = parseActions(`action=http, "Look ma, \"quotes\"; and semicolons", url=http://example.com`)
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, `Look ma, \"quotes\"; and semicolons`, actions[0].Label)
require.Equal(t, `http://example.com`, actions[0].URL)
// Single quotes
actions, err = parseActions(`action=http, '"quotes" and \'single quotes\'', url=http://example.com`)
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, `"quotes" and \'single quotes\'`, actions[0].Label)
require.Equal(t, `http://example.com`, actions[0].URL)
// Single quotes (JSON)
actions, err = parseActions(`action=http, Post it, url=http://example.com, body='{"temperature": 65}'`)
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Post it", actions[0].Label)
require.Equal(t, `http://example.com`, actions[0].URL)
require.Equal(t, `{"temperature": 65}`, actions[0].Body)
// Out of order
actions, err = parseActions(`label="Out of order!" , action="http", url=http://example.com`)
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, `Out of order!`, actions[0].Label)
require.Equal(t, `http://example.com`, actions[0].URL)
// Spaces
actions, err = parseActions(`action = http, label = 'this is a label', url = "http://google.com"`)
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, `this is a label`, actions[0].Label)
require.Equal(t, `http://google.com`, actions[0].URL)
// Non-ASCII
actions, err = parseActions(`action = http, 'Кохайтеся а не воюйте, 💙🫤', url = "http://google.com"`)
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, `Кохайтеся а не воюйте, 💙🫤`, actions[0].Label)
require.Equal(t, `http://google.com`, actions[0].URL)
// Multiple actions, awkward spacing
actions, err = parseActions(`http , 'Make love, not war 💙🫤' , https://ntfy.sh ; view, " yo ", https://x.org`)
require.Nil(t, err)
require.Equal(t, 2, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, `Make love, not war 💙🫤`, actions[0].Label)
require.Equal(t, `https://ntfy.sh`, actions[0].URL)
require.Equal(t, "view", actions[1].Action)
require.Equal(t, " yo ", actions[1].Label)
require.Equal(t, `https://x.org`, actions[1].URL)
// Invalid syntax
_, err = parseActions(`label="Out of order!" x, action="http", url=http://example.com`)
require.EqualError(t, err, "unexpected character 'x' at position 22")
_, err = parseActions(`label="", action="http", url=http://example.com`)
require.EqualError(t, err, "parameter 'label' is required")
_, err = parseActions(`label=, action="http", url=http://example.com`)
require.EqualError(t, err, "parameter 'label' is required")
_, err = parseActions(`label="xx", action="http", url=http://example.com, what is this anyway`)
require.EqualError(t, err, "term 'what is this anyway' unknown")
_, err = parseActions(`fdsfdsf`)
require.EqualError(t, err, "action 'fdsfdsf' unknown")
_, err = parseActions(`aaa=a, "bbb, 'ccc, ddd, eee "`)
require.EqualError(t, err, "key 'aaa' unknown")
_, err = parseActions(`action=http, label="omg the end quote is missing`)
require.EqualError(t, err, "unexpected end of input, quote started at position 20")
_, err = parseActions(`;;;;`)
require.EqualError(t, err, "only 3 actions allowed")
_, err = parseActions(`,,,,,,;;`)
require.EqualError(t, err, "term '' unknown")
_, err = parseActions(`''";,;"`)
require.EqualError(t, err, "unexpected character '\"' at position 2")
}

2
server/server.go
View File

@ -539,7 +539,7 @@ func (s *Server) parsePublishParams(r *http.Request, v *visitor, m *message) (ca
if actionsStr != "" {
m.Actions, err = parseActions(actionsStr)
if err != nil {
return false, false, "", false, err // wrapped errHTTPBadRequestActionsInvalid
return false, false, "", false, wrapErrHTTP(errHTTPBadRequestActionsInvalid, err.Error())
}
}
unifiedpush = readBoolParam(r, false, "x-unifiedpush", "unifiedpush", "up") // see GET too!

7
server/types.go
View File

@ -56,6 +56,13 @@ type action struct {
Extras map[string]string `json:"extras,omitempty"` // used in "broadcast" action
}
func newAction() *action {
return &action{
Headers: make(map[string]string),
Extras: make(map[string]string),
}
}
// publishMessage is used as input when publishing as JSON
type publishMessage struct {
Topic string `json:"topic"`

107
server/util.go
View File

@ -1,17 +1,10 @@
package server
import (
"encoding/json"
"heckel.io/ntfy/util"
"net/http"
"strings"
)
const (
actionIDLength = 10
actionsMax = 3
)
func readBoolParam(r *http.Request, defaultValue bool, names ...string) bool {
value := strings.ToLower(readParam(r, names...))
if value == "" {
@ -47,103 +40,3 @@ func readQueryParam(r *http.Request, names ...string) string {
}
return ""
}
func parseActions(s string) (actions []*action, err error) {
// Parse JSON or simple format
s = strings.TrimSpace(s)
if strings.HasPrefix(s, "[") {
actions, err = parseActionsFromJSON(s)
} else {
actions, err = parseActionsFromSimple(s)
}
if err != nil {
return nil, err
}
// Add ID field, ensure correct uppercase/lowercase
for i := range actions {
actions[i].ID = util.RandomString(actionIDLength)
actions[i].Action = strings.ToLower(actions[i].Action)
actions[i].Method = strings.ToUpper(actions[i].Method)
}
// Validate
if len(actions) > actionsMax {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "only %d actions allowed", actionsMax)
}
for _, action := range actions {
if !util.InStringList([]string{"view", "broadcast", "http"}, action.Action) {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "action '%s' unknown", action.Action)
} else if action.Label == "" {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "parameter 'label' is required")
} else if util.InStringList([]string{"view", "http"}, action.Action) && action.URL == "" {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "parameter 'url' is required for action '%s'", action.Action)
} else if action.Action == "http" && util.InStringList([]string{"GET", "HEAD"}, action.Method) && action.Body != "" {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "parameter 'body' cannot be set if method is %s", action.Method)
}
}
return actions, nil
}
func parseActionsFromJSON(s string) ([]*action, error) {
actions := make([]*action, 0)
if err := json.Unmarshal([]byte(s), &actions); err != nil {
return nil, err
}
return actions, nil
}
func parseActionsFromSimple(s string) ([]*action, error) {
actions := make([]*action, 0)
rawActions := util.SplitNoEmpty(s, ";")
for _, rawAction := range rawActions {
newAction := &action{
Headers: make(map[string]string),
Extras: make(map[string]string),
}
parts := util.SplitNoEmpty(rawAction, ",")
if len(parts) < 3 {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "action requires at least keys 'action', 'label' and one parameter: %s", rawAction)
}
for i, part := range parts {
key, value := util.SplitKV(part, "=")
if key == "" && i == 0 {
newAction.Action = value
} else if key == "" && i == 1 {
newAction.Label = value
} else if key == "" && util.InStringList([]string{"view", "http"}, newAction.Action) && i == 2 {
newAction.URL = value
} else if strings.HasPrefix(key, "headers.") {
newAction.Headers[strings.TrimPrefix(key, "headers.")] = value
} else if strings.HasPrefix(key, "extras.") {
newAction.Extras[strings.TrimPrefix(key, "extras.")] = value
} else if key != "" {
switch strings.ToLower(key) {
case "action":
newAction.Action = value
case "label":
newAction.Label = value
case "clear":
lvalue := strings.ToLower(value)
if !util.InStringList([]string{"true", "yes", "1", "false", "no", "0"}, lvalue) {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "'clear=%s' not allowed", value)
}
newAction.Clear = lvalue == "true" || lvalue == "yes" || lvalue == "1"
case "url":
newAction.URL = value
case "method":
newAction.Method = value
case "body":
newAction.Body = value
default:
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "key '%s' unknown", key)
}
} else {
return nil, wrapErrHTTP(errHTTPBadRequestActionsInvalid, "unknown term '%s'", part)
}
}
actions = append(actions, newAction)
}
return actions, nil
}

53
server/util_test.go
View File

@ -27,56 +27,3 @@ func TestReadBoolParam(t *testing.T) {
require.Equal(t, false, up)
require.Equal(t, true, firebase)
}
func TestParseActions(t *testing.T) {
actions, err := parseActions("[]")
require.Nil(t, err)
require.Empty(t, actions)
actions, err = parseActions("action=http, label=Open door, url=https://door.lan/open; view, Show portal, https://door.lan")
require.Nil(t, err)
require.Equal(t, 2, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Open door", actions[0].Label)
require.Equal(t, "https://door.lan/open", actions[0].URL)
require.Equal(t, "view", actions[1].Action)
require.Equal(t, "Show portal", actions[1].Label)
require.Equal(t, "https://door.lan", actions[1].URL)
actions, err = parseActions(`[{"action":"http","label":"Open door","url":"https://door.lan/open"}, {"action":"view","label":"Show portal","url":"https://door.lan"}]`)
require.Nil(t, err)
require.Equal(t, 2, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Open door", actions[0].Label)
require.Equal(t, "https://door.lan/open", actions[0].URL)
require.Equal(t, "view", actions[1].Action)
require.Equal(t, "Show portal", actions[1].Label)
require.Equal(t, "https://door.lan", actions[1].URL)
actions, err = parseActions("action=http, label=Open door, url=https://door.lan/open, body=this is a body, method=PUT")
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Open door", actions[0].Label)
require.Equal(t, "https://door.lan/open", actions[0].URL)
require.Equal(t, "PUT", actions[0].Method)
require.Equal(t, "this is a body", actions[0].Body)
actions, err = parseActions("action=broadcast, label=Do a thing, extras.command=some command, extras.some_param=a parameter")
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "broadcast", actions[0].Action)
require.Equal(t, "Do a thing", actions[0].Label)
require.Equal(t, 2, len(actions[0].Extras))
require.Equal(t, "some command", actions[0].Extras["command"])
require.Equal(t, "a parameter", actions[0].Extras["some_param"])
actions, err = parseActions("action=http, label=Send request, url=http://example.com, method=GET, headers.Content-Type=application/json, headers.Authorization=Basic sdasffsf")
require.Nil(t, err)
require.Equal(t, 1, len(actions))
require.Equal(t, "http", actions[0].Action)
require.Equal(t, "Send request", actions[0].Label)
require.Equal(t, 2, len(actions[0].Headers))
require.Equal(t, "application/json", actions[0].Headers["Content-Type"])
require.Equal(t, "Basic sdasffsf", actions[0].Headers["Authorization"])
}