209 lines
5.1 KiB
Go
209 lines
5.1 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/md5"
|
|
"encoding/hex"
|
|
"encoding/xml"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"net/http/cookiejar"
|
|
"strings"
|
|
"text/template"
|
|
"time"
|
|
)
|
|
|
|
type FolderId struct {
|
|
Id string `xml:",attr"`
|
|
ChangeKey string `xml:",attr"`
|
|
}
|
|
|
|
type CalendarItem struct {
|
|
Subject string
|
|
UID string
|
|
Start time.Time
|
|
End time.Time
|
|
RecurrenceId string
|
|
Sensitivity string
|
|
CalendarItemType string
|
|
}
|
|
|
|
func (ci CalendarItem) Hash() string {
|
|
h := md5.New()
|
|
h.Write([]byte(ci.UID))
|
|
h.Write([]byte(ci.RecurrenceId))
|
|
return strings.ToUpper(hex.EncodeToString(h.Sum(nil)))
|
|
}
|
|
|
|
type EWSCalendar struct {
|
|
httpClient *http.Client
|
|
url string
|
|
username string
|
|
password string
|
|
}
|
|
|
|
func NewEWSCalendar(url, username, password string) *EWSCalendar {
|
|
// Prepare a cookie jar, since EWS uses some.
|
|
jar, err := cookiejar.New(nil)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return &EWSCalendar{
|
|
httpClient: &http.Client{
|
|
Jar: jar,
|
|
},
|
|
url: url,
|
|
username: username,
|
|
password: password,
|
|
}
|
|
}
|
|
|
|
func (e *EWSCalendar) prepareRequest(body io.Reader) (req *http.Request, err error) {
|
|
req, err = http.NewRequest(http.MethodPost, e.url, body)
|
|
req.Header.Set("Content-Type", "text/xml")
|
|
req.Header.Set("Accept", "text/xml")
|
|
req.SetBasicAuth(e.username, e.password)
|
|
return
|
|
}
|
|
|
|
func (e *EWSCalendar) getCalendarFolderID() (id *FolderId, err error) {
|
|
req, err := e.prepareRequest(strings.NewReader(folderIdRequest))
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
resp, err := e.httpClient.Do(req)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
err = fmt.Errorf("unexpected status when querying folderID: %d", resp.StatusCode)
|
|
return
|
|
}
|
|
|
|
d := xml.NewDecoder(resp.Body)
|
|
defer resp.Body.Close()
|
|
|
|
for {
|
|
var t xml.Token
|
|
t, err = d.Token()
|
|
if err == io.EOF {
|
|
err = nil
|
|
return
|
|
} else if err != nil {
|
|
return
|
|
}
|
|
|
|
switch t := t.(type) {
|
|
case xml.StartElement:
|
|
if t.Name.Local == "FolderId" {
|
|
id = &FolderId{}
|
|
err = d.DecodeElement(id, &t)
|
|
// The first one is enough
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (e *EWSCalendar) getCalendarItems(folder *FolderId, start, end time.Time) (items []CalendarItem, err error) {
|
|
b := &bytes.Buffer{}
|
|
model := struct {
|
|
FolderId *FolderId
|
|
StartDate string
|
|
EndDate string
|
|
}{folder, start.Format(time.RFC3339), end.Format(time.RFC3339)}
|
|
|
|
err = calendarQuery.Execute(b, &model)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
req, err := e.prepareRequest(b)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
resp, err := e.httpClient.Do(req)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
err = fmt.Errorf("unexpected status when querying calendar items: %d", resp.StatusCode)
|
|
return
|
|
}
|
|
|
|
d := xml.NewDecoder(resp.Body)
|
|
defer resp.Body.Close()
|
|
|
|
for {
|
|
var t xml.Token
|
|
t, err = d.Token()
|
|
if err == io.EOF {
|
|
err = nil
|
|
return
|
|
} else if err != nil {
|
|
return
|
|
}
|
|
|
|
switch t := t.(type) {
|
|
case xml.StartElement:
|
|
if t.Name.Local == "CalendarItem" {
|
|
item := CalendarItem{}
|
|
err = d.DecodeElement(&item, &t)
|
|
items = append(items, item)
|
|
}
|
|
}
|
|
}
|
|
return
|
|
}
|
|
|
|
const folderIdRequest = `<?xml version="1.0" encoding="utf-8"?>
|
|
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
|
|
<soap:Header>
|
|
<t:RequestServerVersion Version="Exchange2013_SP1" />
|
|
</soap:Header>
|
|
<soap:Body>
|
|
<m:GetFolder>
|
|
<m:FolderShape>
|
|
<t:BaseShape>AllProperties</t:BaseShape>
|
|
</m:FolderShape>
|
|
<m:FolderIds>
|
|
<t:DistinguishedFolderId Id="calendar" />
|
|
</m:FolderIds>
|
|
</m:GetFolder>
|
|
</soap:Body>
|
|
</soap:Envelope>`
|
|
|
|
var calendarQuery = template.Must(template.New("calendarQuery").Parse(`<?xml version="1.0" encoding="utf-8"?>
|
|
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
|
|
<soap:Header>
|
|
<t:RequestServerVersion Version="Exchange2013_SP1" />
|
|
</soap:Header>
|
|
<soap:Body>
|
|
<m:FindItem Traversal="Shallow">
|
|
<m:ItemShape>
|
|
<t:BaseShape>IdOnly</t:BaseShape>
|
|
<t:AdditionalProperties>
|
|
<t:FieldURI FieldURI="item:Subject" />
|
|
<t:FieldURI FieldURI="item:Sensitivity" />
|
|
<t:FieldURI FieldURI="calendar:Start" />
|
|
<t:FieldURI FieldURI="calendar:End" />
|
|
<t:FieldURI FieldURI="calendar:UID" />
|
|
<t:FieldURI FieldURI="calendar:RecurrenceId" />
|
|
<t:FieldURI FieldURI="calendar:IsCancelled" />
|
|
<t:FieldURI FieldURI="calendar:CalendarItemType" />
|
|
<t:FieldURI FieldURI="calendar:CalendarItemType" />
|
|
</t:AdditionalProperties>
|
|
</m:ItemShape>
|
|
<m:CalendarView StartDate="{{ .StartDate }}" EndDate="{{ .EndDate }}" />
|
|
<m:ParentFolderIds>
|
|
<t:FolderId Id="{{ .FolderId.Id }}" ChangeKey="{{ .FolderId.ChangeKey }}" />
|
|
</m:ParentFolderIds>
|
|
</m:FindItem>
|
|
</soap:Body>
|
|
</soap:Envelope>`))
|