Initial QSfera import

Server/services/collaboration/pkg/helpers/cs3.go

@@ -0,0 +1,17 @@
+package helpers
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+
+	providerv1beta1 "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
+	"github.com/opencloud-eu/reva/v2/pkg/storagespace"
+)
+
+// HashResourceId builds a urlsafe and stable file reference that can be used for proxy routing,
+// so that all sessions on one file end on the same office server
+func HashResourceId(resourceId *providerv1beta1.ResourceId) string {
+	c := sha256.New()
+	c.Write([]byte(storagespace.FormatResourceID(resourceId)))
+	return hex.EncodeToString(c.Sum(nil))
+}

Server/services/collaboration/pkg/helpers/discovery.go

@@ -0,0 +1,172 @@
+package helpers
+
+import (
+	"crypto/tls"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"sync/atomic"
+
+	"github.com/beevik/etree"
+	"github.com/qsfera/server/pkg/log"
+	"github.com/qsfera/server/services/collaboration/pkg/config"
+	"github.com/opencloud-eu/reva/v2/pkg/mime"
+	"github.com/pkg/errors"
+)
+
+// AppURLs holds the app urls fetched from the WOPI app discovery endpoint
+// It is a type safe wrapper around an atomic pointer to a map
+type AppURLs struct {
+	urls atomic.Pointer[map[string]map[string]string]
+}
+
+func NewAppURLs() *AppURLs {
+	a := &AppURLs{}
+	a.urls.Store(&map[string]map[string]string{})
+	return a
+}
+
+func (a *AppURLs) Store(urls map[string]map[string]string) {
+	a.urls.Store(&urls)
+}
+
+func (a *AppURLs) GetMimeTypes() []string {
+	currentURLs := a.urls.Load()
+	if currentURLs == nil {
+		return []string{}
+	}
+
+	mimeTypesMap := make(map[string]bool)
+	for _, extensions := range *currentURLs {
+		for ext := range extensions {
+			m := mime.Detect(false, ext)
+			// skip the default
+			if m == "application/octet-stream" {
+				continue
+			}
+			mimeTypesMap[m] = true
+		}
+	}
+
+	// Convert map to slice
+	mimeTypes := make([]string, 0, len(mimeTypesMap))
+	for mimeType := range mimeTypesMap {
+		mimeTypes = append(mimeTypes, mimeType)
+	}
+
+	return mimeTypes
+}
+
+// GetAppURLFor gets the appURL from the list of appURLs based on the
+// action and file extension provided. If there is no match, an empty
+// string will be returned.
+func (a *AppURLs) GetAppURLFor(action, fileExt string) string {
+	currentURLs := a.urls.Load()
+	if currentURLs == nil {
+		return ""
+	}
+
+	if actionURL, ok := (*currentURLs)[action]; ok {
+		if actionExtensionURL, ok := actionURL[fileExt]; ok {
+			return actionExtensionURL
+		}
+	}
+	return ""
+}
+
+// GetAppURLs gets the edit and view urls for different file types from the
+// target WOPI app (onlyoffice, collabora, etc) via their "/hosting/discovery"
+// endpoint.
+func GetAppURLs(cfg *config.Config, logger log.Logger) (map[string]map[string]string, error) {
+	wopiAppUrl := cfg.App.Addr + "/hosting/discovery"
+
+	httpClient := http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{
+				MinVersion:         tls.VersionTLS12,
+				InsecureSkipVerify: cfg.App.Insecure,
+			},
+		},
+	}
+
+	httpResp, err := httpClient.Get(wopiAppUrl)
+	if err != nil {
+		return nil, err
+	}
+
+	defer httpResp.Body.Close()
+
+	if httpResp.StatusCode != http.StatusOK {
+		logger.Error().
+			Str("WopiAppUrl", wopiAppUrl).
+			Int("HttpCode", httpResp.StatusCode).
+			Msg("WopiDiscovery: wopi app url failed with unexpected code")
+		return nil, errors.New("status code was not 200")
+	}
+
+	var appURLs map[string]map[string]string
+
+	appURLs, err = parseWopiDiscovery(httpResp.Body)
+	if err != nil {
+		logger.Error().
+			Err(err).
+			Str("WopiAppUrl", wopiAppUrl).
+			Msg("WopiDiscovery: failed to parse wopi discovery response")
+		return nil, errors.Wrap(err, "error parsing wopi discovery response")
+	}
+
+	// We won't log anything if successful
+	return appURLs, nil
+}
+
+// parseWopiDiscovery parses the response of the "/hosting/discovery" endpoint
+func parseWopiDiscovery(body io.Reader) (map[string]map[string]string, error) {
+	appURLs := make(map[string]map[string]string)
+
+	doc := etree.NewDocument()
+	if _, err := doc.ReadFrom(body); err != nil {
+		return nil, err
+	}
+	root := doc.SelectElement("wopi-discovery")
+
+	for _, netzone := range root.SelectElements("net-zone") {
+
+		if strings.Contains(netzone.SelectAttrValue("name", ""), "external") {
+			for _, app := range netzone.SelectElements("app") {
+				for _, action := range app.SelectElements("action") {
+					access := action.SelectAttrValue("name", "")
+					if access == "view" || access == "edit" || access == "view_comment" {
+						ext := action.SelectAttrValue("ext", "")
+						urlString := action.SelectAttrValue("urlsrc", "")
+
+						if ext == "" || urlString == "" {
+							continue
+						}
+
+						u, err := url.Parse(urlString)
+						if err != nil {
+							continue
+						}
+
+						// remove any malformed query parameter from discovery urls
+						q := u.Query()
+						for k := range q {
+							if strings.Contains(k, "<") || strings.Contains(k, ">") {
+								q.Del(k)
+							}
+						}
+
+						u.RawQuery = q.Encode()
+
+						if _, ok := appURLs[access]; !ok {
+							appURLs[access] = make(map[string]string)
+						}
+						appURLs[access]["."+ext] = u.String()
+					}
+				}
+			}
+		}
+	}
+	return appURLs, nil
+}

Server/services/collaboration/pkg/helpers/discovery_test.go

@@ -0,0 +1,383 @@
+package helpers_test
+
+import (
+	"net/http"
+	"net/http/httptest"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"github.com/qsfera/server/pkg/log"
+	"github.com/qsfera/server/services/collaboration/pkg/config"
+	"github.com/qsfera/server/services/collaboration/pkg/helpers"
+)
+
+var _ = Describe("AppURLs", func() {
+	var appURLs *helpers.AppURLs
+
+	BeforeEach(func() {
+		appURLs = helpers.NewAppURLs()
+	})
+
+	Describe("NewAppURLs", func() {
+		It("should create a new AppURLs instance with empty map", func() {
+			Expect(appURLs).NotTo(BeNil())
+			Expect(appURLs.GetMimeTypes()).To(BeEmpty())
+			Expect(appURLs.GetAppURLFor("view", ".pdf")).To(BeEmpty())
+		})
+	})
+
+	Describe("Store and GetAppURLFor", func() {
+		It("should store and retrieve app URLs correctly", func() {
+			testURLs := map[string]map[string]string{
+				"view": {
+					".pdf":  "https://example.com/view/pdf",
+					".docx": "https://example.com/view/docx",
+					".xlsx": "https://example.com/view/xlsx",
+				},
+				"edit": {
+					".docx": "https://example.com/edit/docx",
+					".xlsx": "https://example.com/edit/xlsx",
+				},
+			}
+
+			appURLs.Store(testURLs)
+
+			// Test successful lookups
+			Expect(appURLs.GetAppURLFor("view", ".pdf")).To(Equal("https://example.com/view/pdf"))
+			Expect(appURLs.GetAppURLFor("view", ".docx")).To(Equal("https://example.com/view/docx"))
+			Expect(appURLs.GetAppURLFor("edit", ".docx")).To(Equal("https://example.com/edit/docx"))
+		})
+
+		It("should return empty string for non-existent action", func() {
+			testURLs := map[string]map[string]string{
+				"view": {".pdf": "https://example.com/view/pdf"},
+			}
+
+			appURLs.Store(testURLs)
+
+			Expect(appURLs.GetAppURLFor("nonexistent", ".pdf")).To(BeEmpty())
+		})
+
+		It("should return empty string for non-existent extension", func() {
+			testURLs := map[string]map[string]string{
+				"view": {".pdf": "https://example.com/view/pdf"},
+			}
+
+			appURLs.Store(testURLs)
+
+			Expect(appURLs.GetAppURLFor("view", ".nonexistent")).To(BeEmpty())
+		})
+
+		It("should handle empty maps gracefully", func() {
+			emptyURLs := map[string]map[string]string{}
+			appURLs.Store(emptyURLs)
+
+			Expect(appURLs.GetAppURLFor("view", ".pdf")).To(BeEmpty())
+		})
+
+		It("should handle nil action maps gracefully", func() {
+			testURLs := map[string]map[string]string{
+				"view": nil,
+			}
+
+			appURLs.Store(testURLs)
+
+			Expect(appURLs.GetAppURLFor("view", ".pdf")).To(BeEmpty())
+		})
+	})
+
+	Describe("GetMimeTypes", func() {
+		It("should return empty slice for empty AppURLs", func() {
+			mimeTypes := appURLs.GetMimeTypes()
+			Expect(mimeTypes).To(BeEmpty())
+		})
+
+		It("should return correct mime types for known extensions", func() {
+			testURLs := map[string]map[string]string{
+				"view": {
+					".pdf":  "https://example.com/view/pdf",
+					".docx": "https://example.com/view/docx",
+					".xlsx": "https://example.com/view/xlsx",
+					".pptx": "https://example.com/view/pptx",
+				},
+				"edit": {
+					".txt":  "https://example.com/edit/txt",
+					".html": "https://example.com/edit/html",
+				},
+			}
+
+			appURLs.Store(testURLs)
+
+			mimeTypes := appURLs.GetMimeTypes()
+
+			// Should contain expected mime types (order doesn't matter)
+			Expect(mimeTypes).To(ContainElements(
+				"application/pdf",
+				"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+				"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+				"application/vnd.openxmlformats-officedocument.presentationml.presentation",
+				"text/plain",
+				"text/html",
+			))
+
+			// Should not contain application/octet-stream (filtered out)
+			Expect(mimeTypes).NotTo(ContainElement("application/octet-stream"))
+		})
+
+		It("should deduplicate mime types across actions", func() {
+			testURLs := map[string]map[string]string{
+				"view": {
+					".pdf": "https://example.com/view/pdf",
+					".txt": "https://example.com/view/txt",
+				},
+				"edit": {
+					".pdf": "https://example.com/edit/pdf", // Same extension as view
+					".txt": "https://example.com/edit/txt", // Same extension as view
+				},
+			}
+
+			appURLs.Store(testURLs)
+
+			mimeTypes := appURLs.GetMimeTypes()
+
+			// Should only have unique mime types
+			Expect(mimeTypes).To(ContainElements("application/pdf", "text/plain"))
+			Expect(len(mimeTypes)).To(Equal(2)) // No duplicates
+		})
+
+		It("should filter out application/octet-stream mime types", func() {
+			testURLs := map[string]map[string]string{
+				"view": {
+					".pdf":      "https://example.com/view/pdf",
+					".unknown":  "https://example.com/view/unknown", // This might return application/octet-stream
+					".fake-ext": "https://example.com/view/fake",    // This might return application/octet-stream
+				},
+			}
+
+			appURLs.Store(testURLs)
+
+			mimeTypes := appURLs.GetMimeTypes()
+
+			// Should contain PDF but not octet-stream
+			Expect(mimeTypes).To(ContainElement("application/pdf"))
+			Expect(mimeTypes).NotTo(ContainElement("application/octet-stream"))
+		})
+
+		It("should handle empty extension maps", func() {
+			testURLs := map[string]map[string]string{
+				"view": {},
+				"edit": {},
+			}
+
+			appURLs.Store(testURLs)
+
+			mimeTypes := appURLs.GetMimeTypes()
+			Expect(mimeTypes).To(BeEmpty())
+		})
+
+		It("should handle nil extension maps", func() {
+			testURLs := map[string]map[string]string{
+				"view": nil,
+				"edit": nil,
+			}
+
+			appURLs.Store(testURLs)
+
+			mimeTypes := appURLs.GetMimeTypes()
+			Expect(mimeTypes).To(BeEmpty())
+		})
+	})
+
+	Describe("Concurrent Access", func() {
+		It("should handle concurrent reads and writes safely", func() {
+			// This is a basic smoke test for concurrent access
+			// In practice, you'd want more sophisticated race testing
+
+			initialURLs := map[string]map[string]string{
+				"view": {".pdf": "https://example.com/view/pdf"},
+			}
+			appURLs.Store(initialURLs)
+
+			done := make(chan bool, 10)
+
+			// Start multiple readers
+			for i := 0; i < 5; i++ {
+				go func() {
+					defer GinkgoRecover()
+					for j := 0; j < 100; j++ {
+						_ = appURLs.GetAppURLFor("view", ".pdf")
+						_ = appURLs.GetMimeTypes()
+					}
+					done <- true
+				}()
+			}
+
+			// Start multiple writers
+			for i := 0; i < 5; i++ {
+				go func(id int) {
+					defer GinkgoRecover()
+					for j := 0; j < 100; j++ {
+						newURLs := map[string]map[string]string{
+							"view": {".pdf": "https://example.com/updated/pdf"},
+						}
+						appURLs.Store(newURLs)
+					}
+					done <- true
+				}(i)
+			}
+
+			// Wait for all goroutines to complete
+			for i := 0; i < 10; i++ {
+				<-done
+			}
+
+			// Should still be functional after concurrent access
+			Expect(appURLs.GetAppURLFor("view", ".pdf")).NotTo(BeEmpty())
+		})
+	})
+
+	Describe("Real-world scenarios", func() {
+		It("should handle realistic WOPI discovery data", func() {
+			// Based on the test data from the discovery tests
+			realisticURLs := map[string]map[string]string{
+				"view": {
+					".pdf":  "https://cloud.qsfera.test/hosting/wopi/word/view",
+					".djvu": "https://cloud.qsfera.test/hosting/wopi/word/view",
+					".docx": "https://cloud.qsfera.test/hosting/wopi/word/view",
+					".xls":  "https://cloud.qsfera.test/hosting/wopi/cell/view",
+					".xlsb": "https://cloud.qsfera.test/hosting/wopi/cell/view",
+				},
+				"edit": {
+					".docx": "https://cloud.qsfera.test/hosting/wopi/word/edit",
+				},
+			}
+
+			appURLs.Store(realisticURLs)
+
+			// Test specific lookups
+			Expect(appURLs.GetAppURLFor("view", ".pdf")).To(Equal("https://cloud.qsfera.test/hosting/wopi/word/view"))
+			Expect(appURLs.GetAppURLFor("edit", ".docx")).To(Equal("https://cloud.qsfera.test/hosting/wopi/word/edit"))
+			Expect(appURLs.GetAppURLFor("edit", ".pdf")).To(BeEmpty()) // No edit for PDF
+
+			// Test mime types
+			mimeTypes := appURLs.GetMimeTypes()
+			Expect(mimeTypes).To(ContainElements(
+				"application/pdf",
+				"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
+				"application/vnd.ms-excel",
+			))
+		})
+	})
+})
+
+var _ = Describe("Discovery", func() {
+	var (
+		discoveryContent1 string
+		srv               *httptest.Server
+	)
+
+	BeforeEach(func() {
+		discoveryContent1 = `
+<?xml version="1.0" encoding="utf-8"?>
+<wopi-discovery>
+  <net-zone name="external-http">
+    <app name="Word" favIconUrl="https://cloud.qsfera.test/web-apps/apps/documenteditor/main/resources/img/favicon.ico">
+      <action name="view" ext="pdf" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/view?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="embedview" ext="pdf" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/view?embed=1&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="view" ext="djvu" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/view?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="embedview" ext="djvu" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/view?embed=1&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="view" ext="docx" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/view?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="embedview" ext="docx" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/view?embed=1&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="editnew" ext="docx" requires="locks,update" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/edit?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="edit" ext="docx" default="true" requires="locks,update" urlsrc="https://cloud.qsfera.test/hosting/wopi/word/edit?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+    </app>
+    <app name="Excel" favIconUrl="https://cloud.qsfera.test/web-apps/apps/spreadsheeteditor/main/resources/img/favicon.ico">
+      <action name="view" ext="xls" urlsrc="https://cloud.qsfera.test/hosting/wopi/cell/view?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="embedview" ext="xls" urlsrc="https://cloud.qsfera.test/hosting/wopi/cell/view?embed=1&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="convert" ext="xls" targetext="xlsx" requires="update" urlsrc="https://cloud.qsfera.test/hosting/wopi/convert-and-edit/xls/xlsx?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="view" ext="xlsb" urlsrc="https://cloud.qsfera.test/hosting/wopi/cell/view?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="embedview" ext="xlsb" urlsrc="https://cloud.qsfera.test/hosting/wopi/cell/view?embed=1&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+      <action name="convert" ext="xlsb" targetext="xlsx" requires="update" urlsrc="https://cloud.qsfera.test/hosting/wopi/convert-and-edit/xlsb/xlsx?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+    </app>
+    <app name="application/vnd.oasis.opendocument.presentation">
+      <action name="edit" ext="" default="true" requires="locks,update" urlsrc="https://cloud.qsfera.test/hosting/wopi/slide/edit?&amp;&lt;rs=DC_LLCC&amp;&gt;&lt;dchat=DISABLE_CHAT&amp;&gt;&lt;embed=EMBEDDED&amp;&gt;&lt;fs=FULLSCREEN&amp;&gt;&lt;hid=HOST_SESSION_ID&amp;&gt;&lt;rec=RECORDING&amp;&gt;&lt;sc=SESSION_CONTEXT&amp;&gt;&lt;thm=THEME_ID&amp;&gt;&lt;ui=UI_LLCC&amp;&gt;&lt;wopisrc=WOPI_SOURCE&amp;&gt;&amp;"/>
+    </app>
+  </net-zone>
+  <proof-key oldvalue="BgIAAACkAABSU0ExAAgAAAEAAQD/NVqekFNi8X3p6Bvdlaxm0GGuggW5kKfVEQzPGuOkGVrz6DrOMNR+k7Pq8tONY+1NHgS6Z+v3959em78qclVDuQX77Tkml0xMHAQHN4sAHF9iQJS8gOBUKSVKaHD7Z8YXch6F212YSUSc8QphpDSHWVShU7rcUeLQsd/0pkflh5+um4YKEZhm4Mou3vstp5p12NeffyK1WFZF7q4jB7jclAslYKQsP82YY3DcRwu5Tl/+W0ifVcXze0mI7v1reJ12pKn8ifRiq+0q5oJST3TRSrvmjLg9Gt3ozhVIt2HUi3La7Qh40YOAUXm0g/hUq2BepeOp1C7WSvaOFHXe6Hqq" oldmodulus="qnro3nUUjvZK1i7UqeOlXmCrVPiDtHlRgIPReAjt2nKL1GG3SBXO6N0aPbiM5rtK0XRPUoLmKu2rYvSJ/Kmkdp14a/3uiEl788VVn0hb/l9OuQtH3HBjmM0/LKRgJQuU3LgHI67uRVZYtSJ/n9fYdZqnLfveLsrgZpgRCoabrp+H5Uem9N+x0OJR3LpToVRZhzSkYQrxnERJmF3bhR5yF8Zn+3BoSiUpVOCAvJRAYl8cAIs3BwQcTEyXJjnt+wW5Q1VyKr+bXp/39+tnugQeTe1jjdPy6rOTftQwzjro81oZpOMazwwR1aeQuQWCrmHQZqyV3Rvo6X3xYlOQnlo1/w==" oldexponent="AQAB" value="BgIAAACkAABSU0ExAAgAAAEAAQD/NVqekFNi8X3p6Bvdlaxm0GGuggW5kKfVEQzPGuOkGVrz6DrOMNR+k7Pq8tONY+1NHgS6Z+v3959em78qclVDuQX77Tkml0xMHAQHN4sAHF9iQJS8gOBUKSVKaHD7Z8YXch6F212YSUSc8QphpDSHWVShU7rcUeLQsd/0pkflh5+um4YKEZhm4Mou3vstp5p12NeffyK1WFZF7q4jB7jclAslYKQsP82YY3DcRwu5Tl/+W0ifVcXze0mI7v1reJ12pKn8ifRiq+0q5oJST3TRSrvmjLg9Gt3ozhVIt2HUi3La7Qh40YOAUXm0g/hUq2BepeOp1C7WSvaOFHXe6Hqq" modulus="qnro3nUUjvZK1i7UqeOlXmCrVPiDtHlRgIPReAjt2nKL1GG3SBXO6N0aPbiM5rtK0XRPUoLmKu2rYvSJ/Kmkdp14a/3uiEl788VVn0hb/l9OuQtH3HBjmM0/LKRgJQuU3LgHI67uRVZYtSJ/n9fYdZqnLfveLsrgZpgRCoabrp+H5Uem9N+x0OJR3LpToVRZhzSkYQrxnERJmF3bhR5yF8Zn+3BoSiUpVOCAvJRAYl8cAIs3BwQcTEyXJjnt+wW5Q1VyKr+bXp/39+tnugQeTe1jjdPy6rOTftQwzjro81oZpOMazwwR1aeQuQWCrmHQZqyV3Rvo6X3xYlOQnlo1/w==" exponent="AQAB"/>
+</wopi-discovery>
+`
+		srv = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+			switch req.URL.Path {
+			case "/bad/hosting/discovery":
+				w.WriteHeader(500)
+			case "/good/hosting/discovery":
+				w.Write([]byte(discoveryContent1))
+			case "/wrongformat/hosting/discovery":
+				w.Write([]byte("Text that <can't> be XML /form<atted/"))
+			}
+		}))
+	})
+
+	AfterEach(func() {
+		srv.Close()
+	})
+
+	Describe("GetAppURLs", func() {
+		It("Good discovery URL", func() {
+			cfg := &config.Config{
+				App: config.App{
+					Addr:     srv.URL + "/good",
+					Insecure: true,
+				},
+			}
+			logger := log.NopLogger()
+
+			appUrls, err := helpers.GetAppURLs(cfg, logger)
+
+			expectedAppUrls := map[string]map[string]string{
+				"view": map[string]string{
+					".pdf":  "https://cloud.qsfera.test/hosting/wopi/word/view",
+					".djvu": "https://cloud.qsfera.test/hosting/wopi/word/view",
+					".docx": "https://cloud.qsfera.test/hosting/wopi/word/view",
+					".xls":  "https://cloud.qsfera.test/hosting/wopi/cell/view",
+					".xlsb": "https://cloud.qsfera.test/hosting/wopi/cell/view",
+				},
+				"edit": map[string]string{
+					".docx": "https://cloud.qsfera.test/hosting/wopi/word/edit",
+				},
+			}
+
+			Expect(err).To(Succeed())
+			Expect(appUrls).To(Equal(expectedAppUrls))
+		})
+
+		It("Wrong discovery URL", func() {
+			cfg := &config.Config{
+				App: config.App{
+					Addr:     srv.URL + "/bad",
+					Insecure: true,
+				},
+			}
+			logger := log.NopLogger()
+
+			appUrls, err := helpers.GetAppURLs(cfg, logger)
+			Expect(err).To(HaveOccurred())
+			Expect(appUrls).To(BeNil())
+		})
+
+		It("Not XML formatted", func() {
+			cfg := &config.Config{
+				App: config.App{
+					Addr:     srv.URL + "/wrongformat",
+					Insecure: true,
+				},
+			}
+			logger := log.NopLogger()
+
+			appUrls, err := helpers.GetAppURLs(cfg, logger)
+			Expect(err).To(HaveOccurred())
+			Expect(appUrls).To(BeNil())
+		})
+	})
+})

Server/services/collaboration/pkg/helpers/helpers_suite_test.go

@@ -0,0 +1,13 @@
+package helpers_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+func TestHelpers(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Helpers Suite")
+}

Server/services/collaboration/pkg/helpers/registration.go

@@ -0,0 +1,75 @@
+package helpers
+
+import (
+	"context"
+	"errors"
+
+	registryv1beta1 "github.com/cs3org/go-cs3apis/cs3/app/registry/v1beta1"
+	gatewayv1beta1 "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
+	rpcv1beta1 "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
+	"github.com/opencloud-eu/reva/v2/pkg/rgrpc/todo/pool"
+
+	"github.com/qsfera/server/pkg/log"
+	"github.com/qsfera/server/pkg/registry"
+	"github.com/qsfera/server/pkg/version"
+	"github.com/qsfera/server/services/collaboration/pkg/config"
+)
+
+// RegisterQsferaService will register this service.
+// There are no explicit requirements for the context, and it will be passed
+// without changes to the underlying RegisterService method.
+func RegisterQsferaService(ctx context.Context, cfg *config.Config, logger log.Logger) error {
+	svc := registry.BuildGRPCService(cfg.GRPC.Namespace+"."+cfg.Service.Name, cfg.GRPC.Protocol, cfg.GRPC.Addr, version.GetString())
+	return registry.RegisterService(ctx, logger, svc, cfg.Debug.Addr)
+}
+
+// RegisterAppProvider will register this service as app provider in REVA.
+// The GatewayAPIClient is expected to be provided via `helpers.GetCS3apiClient`.
+// The appUrls are expected to be provided via `helpers.GetAppURLs`
+//
+// Note that this method doesn't provide a re-registration mechanism, so it
+// will register the service once
+func RegisterAppProvider(
+	ctx context.Context,
+	cfg *config.Config,
+	logger log.Logger,
+	gws pool.Selectable[gatewayv1beta1.GatewayAPIClient],
+	appUrls *AppURLs,
+) error {
+	mimeTypes := appUrls.GetMimeTypes()
+
+	logger.Debug().
+		Str("AppName", cfg.App.Name).
+		Strs("Mimetypes", mimeTypes).
+		Msg("Registering mimetypes in the app provider")
+
+	// TODO: an added app provider shouldn't last forever. Instead the registry should use a TTL
+	// and delete providers that didn't register again. If an app provider dies or get's disconnected,
+	// the users will be no longer available to choose to open a file with it (currently, opening a file just fails)
+	req := &registryv1beta1.AddAppProviderRequest{
+		Provider: &registryv1beta1.ProviderInfo{
+			Name:        cfg.App.Name,
+			Description: cfg.App.Description,
+			Icon:        cfg.App.Icon,
+			Address:     cfg.GRPC.Namespace + "." + cfg.Service.Name,
+			MimeTypes:   mimeTypes,
+			ProductName: cfg.App.Product,
+		},
+	}
+	gwc, err := gws.Next()
+	if err != nil {
+		return err
+	}
+	resp, err := gwc.AddAppProvider(ctx, req)
+	if err != nil {
+		logger.Error().Err(err).Msg("AddAppProvider failed")
+		return err
+	}
+
+	if resp.GetStatus().GetCode() != rpcv1beta1.Code_CODE_OK {
+		logger.Error().Str("status_code", resp.GetStatus().GetCode().String()).Msg("AddAppProvider failed")
+		return errors.New("status code != CODE_OK")
+	}
+
+	return nil
+}