Discovery và capabilities

HTTP/1.1 200 OK
Content-Type: text/xml

<wopi-discovery>
    <net-zone name="external-http">
        <app favIconUrl="http://localhost:8080/browser/825c9caa93/images/x-office-document.svg" name="writer">
            <action default="true" ext="odt" name="edit" urlsrc="http://localhost:8080/browser/825c9caa93/cool.html?"/>
            <action ext="odt" name="view" urlsrc="http://localhost:8080/browser/825c9caa93/cool.html?"/>
            <action default="true" ext="docx" name="edit" urlsrc="http://localhost:8080/browser/825c9caa93/cool.html?"/>
            <action ext="docx" name="view" urlsrc="http://localhost:8080/browser/825c9caa93/cool.html?"/>
            <action ext="docx" name="editnew" urlsrc="http://localhost:8080/browser/825c9caa93/cool.html?"/>
            <!-- ... -->
        </app>
        <app name="calc"> <!-- xlsx, xls, ods, csv ... --> </app>
        <app name="impress"> <!-- pptx, ppt, odp ... --> </app>
        <app name="application/vnd.openxmlformats-officedocument.wordprocessingml.document">
            <action default="true" ext="" name="edit" urlsrc="http://localhost:8080/browser/825c9caa93/cool.html?"/>
            <action default="true" ext="" name="view" urlsrc="http://localhost:8080/browser/825c9caa93/cool.html?"/>
        </app>
        <!-- ... -->
        <app name="Capabilities">
            <action ext="" name="getinfo" urlsrc="http://localhost:8080/hosting/capabilities"/>
        </app>
    </net-zone>
</wopi-discovery>

# Lấy urlsrc theo đuôi tệp từ discovery (chỉ dùng thư viện chuẩn)
import urllib.request
import xml.etree.ElementTree as ET

O3O_URL = "http://localhost:8080"


def load_actions():
    xml = urllib.request.urlopen(O3O_URL + "/hosting/discovery", timeout=10).read()
    actions = {}
    for action in ET.fromstring(xml).iter("action"):
        ext, name = action.get("ext"), action.get("name")
        if ext:  # bỏ các mục theo kiểu MIME (ext rỗng)
            actions.setdefault((ext, name), action.get("urlsrc"))
    return actions


actions = load_actions()
print(actions[("docx", "edit")])   # http://localhost:8080/browser/<hash>/cool.html?
print(actions[("xlsx", "view")])
print(sorted({ext for ext, name in actions if name == "edit"}))

// Node.js 18 trở lên (có sẵn fetch). Nhớ đệm kết quả vài phút thay vì gọi mỗi lần mở tệp.
const O3O_URL = "http://localhost:8080";

async function urlsrcFor(ext, action = "edit") {
  const xml = await (await fetch(`${O3O_URL}/hosting/discovery`)).text();
  for (const tag of xml.match(/<action\b[^>]*>/g) || []) {
    const attr = (n) => (tag.match(new RegExp(`\\b${n}="([^"]*)"`)) || [])[1];
    if (attr("ext") === ext && attr("name") === action) return attr("urlsrc");
  }
  throw new Error(`no ${action} action for .${ext}`);
}

urlsrcFor("docx").then(console.log);   // http://localhost:8080/browser/<hash>/cool.html?