[IMP] website_profile: add a specific route to access avatar of users

Purpose of this commit is to give a specific route to access users image
used as avatar in profile and various frontend applications.

Indeed current web/image controller basically checks record access rights
with current user. However in some cases we want to display user avatars
even if current user cannot read user records, which is generally the case.
Indeed res.users is a private and technical model.

To solve that issue we add a controller for avatar. Basically published
and frontend active user avatars are available.

This commit is linked to task ID 1936153 and PR #30770.

addons/website_profile/__init__.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from . import controllers
 from . import models
 from . import controllers

addons/website_profile/controllers/main.py

@@ -2,18 +2,34 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 import base64
+import werkzeug
 import werkzeug.exceptions
 import werkzeug.urls
 import werkzeug.wrappers
 
-from odoo import http
+from odoo import http, modules, tools
 from odoo.http import request
 from odoo.osv import expression
+from odoo.tools import limited_image_resize
 
 
 class WebsiteProfile(http.Controller):
+
     # Profile
     # ---------------------------------------------------
+
+    def _check_avatar_access(self, user_id, **post):
+        """ Base condition to see user avatar independently form access rights
+        is to see published users having karma, meaning they participated to
+        frontend applications like forum or elearning. """
+        try:
+            user = request.env['res.users'].sudo().browse(user_id).exists()
+        except:
+            return False
+        if user:
+            return user.website_published and user.karma > 0
+        return False
+
     def _check_user_profile_access(self, user_id):
         user_sudo = request.env['res.users'].sudo().browse(user_id)
         if user_sudo.karma == 0 or not user_sudo.website_published or \
@@ -41,6 +57,47 @@ class WebsiteProfile(http.Controller):
             'edit_button_url_param': '',
         }
 
+    @http.route([
+        '/profile/avatar/<int:user_id>',
+    ], type='http', auth="public", website=True, sitemap=False)
+    def get_user_profile_avatar(self, user_id=0, width=0, height=0, crop=False, avoid_if_small=False, upper_limit=False, **post):
+        can_sudo = self._check_avatar_access(user_id, **post)
+        fname = post.get('field', 'image_medium')
+        if can_sudo:
+            status, headers, content = request.env['ir.http'].sudo().binary_content(
+                model='res.users', id=user_id, field=fname,
+                default_mimetype='image/png')
+        else:
+            status, headers, content = request.env['ir.http'].binary_content(
+                model='res.users', id=user_id, field=fname,
+                default_mimetype='image/png')
+        if status == 301:
+            return request.env['ir.http']._response_by_status(status, headers, content)
+        if status == 304:
+            return werkzeug.wrappers.Response(status=304)
+
+        if not content:
+            img_path = modules.get_module_resource('web', 'static/src/img', 'placeholder.png')
+            with open(img_path, 'rb') as f:
+                image = f.read()
+            content = base64.b64encode(image)
+            dictheaders = dict(headers) if headers else {}
+            dictheaders['Content-Type'] = 'image/png'
+            headers = list(dictheaders.items())
+            if not (width or height):
+                suffix = fname.split('_')[-1]
+                if suffix in ('small', 'medium', 'big'):
+                    content = getattr(tools, 'image_resize_image_%s' % suffix)(content)
+
+        content = limited_image_resize(
+            content, width=width, height=height, crop=crop, upper_limit=upper_limit, avoid_if_small=avoid_if_small)
+
+        image_base64 = base64.b64decode(content)
+        headers.append(('Content-Length', len(image_base64)))
+        response = request.make_response(image_base64, headers)
+        response.status_code = status
+        return response
+
     @http.route(['/profile/user/<int:user_id>'], type='http', auth="public", website=True)
     def view_user_profile(self, user_id, **post):
         user = self._check_user_profile_access(user_id)