__matrix_element: add more branding parameters

type/__matrix_element/files/config.json.sh

@@ -34,12 +34,12 @@ EOF
 
     if [ "$BRANDING_AUTH_FOOTER_LINKS" != "" ]; then
         cat << EOF
-        "authFooterLinks": "$BRANDING_AUTH_FOOTER_LINKS",
+        "authFooterLinks": $BRANDING_AUTH_FOOTER_LINKS,
 EOF
     fi
 
     cat << EOF
-    "welcomeBackgroundUrl": "themes/element/img/backgrounds/lake.jpg"
+    "welcomeBackgroundUrl": "$BRANDING_WELCOME_BACKGROUND_URL"
 EOF
     echo '},'
 }
@@ -85,6 +85,10 @@ cat << EOF
             "url": "$COOKIE_POLICY_URL",
             "text": "Cookie Policy"
         }
-    ]
+    ],
+   "embeddedPages": {
+        "welcomeUrl": "$WELCOME_PAGE_URL",
+        "homeUrl": "$HOME_PAGE_URL"
+    }
 }
 EOF

type/__matrix_element/man.rst

@@ -39,6 +39,16 @@ owner
 brand
   Web UI branding, defaults to 'Element'.
 
+branding_auth_header_logo_url
+  A logo image that is shown in the header during authentication flows.
+
+branding_welcome_background_url
+  An image to use as a wallpaper outside the app during authentication flows. If an array is passed, an image is chosen randomly for each visit.
+
+branding_auth_footer_links
+  a list of links to show in the authentication page footer: `[{"text": "Link
+  text", "url": "https://link.target"}, {"text": "Other link", ...}]`
+
 default_country_code
   ISO 3166 alpha2 country code to use when showing country selectors, such as
   phone number inputs. Defaults to GB.

type/__matrix_element/manifest

@@ -31,6 +31,7 @@ export DEFAULT_COUNTRY_CODE=$(cat "$__object/parameter/default_country_code")
 export ROOM_DIRECTORY_SERVERS=$(cat "$__object/parameter/room_directory_servers")
 export PRIVACY_POLICY_URL=$(cat "$__object/parameter/privacy_policy_url")
 export COOKIE_POLICY_URL=$(cat "$__object/parameter/cookie_policy_url")
+export BRANDING_WELCOME_BACKGROUND_URL=$(cat "$__object/parameter/branding_welcome_background_url")
 
 if [ -f "$__object/parameter/jitsi_domain" ]; then
     export JITSI_DOMAIN=$(cat "$__object/parameter/jitsi_domain")
@@ -45,14 +46,24 @@ if [ -f "$__object/parameter/branding_auth_footer_links" ]; then
 fi
 
 if [ -f "$__object/parameter/homepage" ]; then
-    export EMBED_HOMEPAGE=1
     homepage=$(cat "$__object/parameter/homepage")
+    if [ -f "$homepage" ]; then
+      upload_homepage=1
+    else
+      export HOME_PAGE_URL=$homepage
+    fi
 fi
 
+WELCOME_PAGE_URL="welcome.html"
 if [ -f "$__object/parameter/welcomepage" ]; then
-    export EMBED_WELCOMEPAGE=1
     welcomepage=$(cat "$__object/parameter/welcomepage")
+    if [ -f welcomepage ]; then
+      export UPLOAD_WELCOMEPAGE=1
+    else
+      WELCOME_PAGE_URL=$welcomepage
     fi
+fi
+export WELCOME_PAGE_URL
 
 if [ -f "$__object/parameter/custom_asset" ]; then
    "$__object/parameter/custom_asset" | while IFS= read -r file; do
@@ -92,14 +103,14 @@ require="__directory/$INSTALL_DIR/cdist" __file "$INSTALL_DIR/cdist/config.json"
   --mode 0664 \
   --state present
 
-if [ $EMBED_HOMEPAGE ]; then
+if [ $upload_homepage ]; then
     require="__directory/$INSTALL_DIR/cdist" __file "$INSTALL_DIR/cdist/home.html" \
       --source "$homepage" \
       --mode 0664 \
       --state present
 fi
 
-if [ $EMBED_WELCOMEPAGE ]; then
+if [ $upload_welcomepage ]; then
     require="__directory/$INSTALL_DIR/cdist" __file "$INSTALL_DIR/cdist/welcome.html" \
       --source "$welcomepage" \
       --mode 0664 \

type/__matrix_element/parameter/default/branding_welcome_background_url

@@ -0,0 +1 @@
+themes/element/img/backgrounds/lake.jpg

type/__matrix_element/parameter/optional

@@ -12,3 +12,4 @@ welcomepage
 jitsi_domain
 branding_auth_header_logo_url
 branding_auth_footer_links
+branding_welcome_background_url