Restrictive referrer-policy prevents OpenStreetMap from working correctly

[RickyRomero]

Lychee version

v7.5.3

Did you check the latest Lychee version?

Yes, I did

Which PHP version are you using?

PHP 8.5

Detailed description of the problem

The config/secure-headers.php config file contains a default setting for the referrer-policy header (no-referrer) that causes OpenStreetMap to watermark map tiles with the following message:

This is OSM's policy on blocking tile loading. I see that the referrer-policy header isn't configurable from within Lychee's web interface, and I can't change it from an environment variable either. Is the intent that I override this entire file in my docker compose config?

Ideally, this bug is resolved by either:

• Changing the default header value to strict-origin-when-cross-origin so that maps work, or
• Adding official docs for updating the referrer-policy header to enable maps

(Extra Credit: Remove Wikimedia from the supported map providers; they no longer allow third-party embedding.)

Lychee/config/secure-headers.php

Lines 82 to 90 in 9ad0993

	/**
	* Referrer-Policy.
	*
	* @see https://w3c.github.io/webappsec-referrer-policy
	*
	* Available Value: 'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-cross-origin',
	* 'same-origin', 'strict-origin', 'strict-origin-when-cross-origin', 'unsafe-url'
	*/
	'referrer-policy' => 'no-referrer',

Steps to reproduce the issue

No response

Diagnostics [REQUIRED]

Smart Diagnostics
-----------------
Info: Hash: ee4d8b1e9aa8b665—b679cad74627845b
         2728 files and 13792 vendor files
Warning: /*********c/uploads/ is owned by group www-data, but should be owned by one out of root
Warning: /*********c/uploads/ has permissions 0755, but should have 0775
Warning: /a********ge/tmp/jobs/ is owned by group www-data, but should be owned by one out of root
Warning: /a********ge/tmp/jobs/ has permissions 0750, but should have 0775
Warning: /a********ge/tmp/uploads/ is owned by group www-data, but should be owned by one out of root
Warning: /a********ge/tmp/uploads/ has permissions 0750, but should have 0775
Warning: '/*********c/dist/user.css' does not exist or has insufficient read/write privileges.
Info: Full directory permission check is disabled
Info: Have you considered supporting Lychee? :)

System Information
------------------
Lychee Version (release):                  7.5.2
DB Version:                                7.5.2

Docker:                                    lycheeorg-frankenphp
composer install:                          --no-dev
APP_ENV:                                   production
APP_DEBUG:                                 false
APP_URL:                                   set
APP_DIR:                                   default
LOG_VIEWER_ENABLED:                        true

System:                                    Linux
PHP Version:                               8.5.4
PHP User agent:                            Lychee/6 (https://lycheeorg.dev/)
Timezone:                                  America/Los_Angeles
Max uploaded file size:                    128M
Max post size:                             128M
Chunk size:                                102.40 MB
Max execution time:                        0
PostgreSQL Version:                        PostgreSQL 16.13 on x86_64-pc-linux-musl, compiled by gcc (Alpine 15.2.0) 15.2.0, 64-bit

exec() Available:                          yes
Imagick Available:                         1
Imagick Enabled:                           yes
Imagick Version:                           1809
GD Version:                                bundled (2.1.0 compatible)
Number of foreign key:                     33 found.

Config Information
------------------
version:                                   070502
check_for_updates:                         0
sorting_photos_col:                        taken_at
sorting_photos_order:                      ASC
sorting_albums_col:                        max_taken_at
sorting_albums_order:                      ASC
imagick:                                   1
skip_duplicates:                           0
small_max_width:                           0
small_max_height:                          360
medium_max_width:                          1920
medium_max_height:                         1080
lang:                                      en
image_overlay_type:                        desc
default_license:                           reserved
compression_quality:                       90
grants_full_photo_access:                  1
delete_imported:                           0
mod_frame_enabled:                         1
mod_frame_refresh:                         30
thumb_2x:                                  1
small_2x:                                  1
medium_2x:                                 1
landing_page_enable:                       0
search_public:                             0
hide_version_number:                       0
recent_age:                                1
grants_download:                           0
photos_wraparound:                         1
map_display:                               1
zip64:                                     1
map_display_public:                        1
map_provider:                              OpenStreetMap.org
map_include_subalbums:                     0
update_check_every_days:                   3
has_exiftool:                              1
share_button_visible:                      0
import_via_symlink:                        0
has_ffmpeg:                                1
location_decoding:                         0
location_decoding_timeout:                 30
location_show:                             1
location_show_public:                      1
rss_enable:                                0
rss_recent_days:                           7
rss_max_items:                             100
prefer_available_xmp_metadata:             0
editor_enabled:                            1
lossless_optimization:                     0
local_takestamp_video_formats:             .avi|.mov
log_max_num_line:                          1000
unlock_password_photos_with_url_param:     0
nsfw_visible:                              1
nsfw_blur:                                 0
nsfw_warning:                              0
nsfw_warning_admin:                        0
nsfw_banner_override:                      
map_display_direction:                     1
album_subtitle_type:                       oldstyle
upload_processing_limit:                   4
new_photos_notification:                   0
zip_deflate_level:                         6
default_album_protection:                  inherit
album_decoration:                          layers
album_decoration_orientation:              row
allow_username_change:                     1
auto_fix_orientation:                      1
random_album_id:                           highlighted
use_last_modified_date_when_no_exif_date:  0
layout:                                    justified
date_format_photo_thumb:                   M j, Y, g:i:s A e
date_format_photo_overlay:                 M j, Y, g:i:s A e
date_format_sidebar_uploaded:              M j, Y, g:i:s A e
date_format_sidebar_taken_at:              M j, Y, g:i:s A e
date_format_hero_min_max:                  F Y
date_format_hero_created_at:               M j, Y, g:i:s A T
date_format_album_thumb:                   M Y
upload_chunk_size:                         0
nsfw_banner_blur_backdrop:                 0
search_pagination_limit:                   300
search_minimum_length_required:            4
photo_layout_justified_row_height:         320
photo_layout_masonry_column_width:         300
photo_layout_grid_column_width:            250
photo_layout_square_column_width:          200
photo_layout_gap:                          12
display_thumb_album_overlay:               always
display_thumb_photo_overlay:               hover
default_album_thumb_aspect_ratio:          1/1
use_album_compact_header:                  0
back_button_enabled:                       0
back_button_text:                          Return to Home
SA_random_thumbs:                          0
login_required:                            0
enable_unsorted:                           1
enable_highlighted:                        1
enable_recent:                             1
enable_on_this_day:                        1
login_required_root_only:                  1
dark_mode_enabled:                         1
low_quality_image_placeholder:             1
show_keybinding_help_popup:                0
show_keybinding_help_button:               1
disable_se_call_for_actions:               0
enable_se_preview:                         0
slideshow_timeout:                         5
keep_original_untouched:                   1
timeline_photos_enabled:                   1
timeline_photos_public:                    0
timeline_photos_granularity:               day
timeline_photos_order:                     taken_at
timeline_photos_layout:                    square
timeline_photos_pagination_limit:          200
timeline_albums_enabled:                   1
timeline_albums_public:                    0
timeline_albums_granularity:               year
timeline_left_border_enabled:              1
timeline_photo_date_format_year:           Y
timeline_photo_date_format_month:          M Y
timeline_photo_date_format_day:            j M Y
timeline_photo_date_format_hour:           g:i
timeline_album_date_format_year:           Y
timeline_album_date_format_month:          M Y
timeline_album_date_format_day:            j M
hide_nsfw_in_smart_albums:                 1
hide_nsfw_in_frame:                        1
hide_nsfw_in_map:                          1
hide_nsfw_in_search:                       1
search_photos_layout:                      square
hide_nsfw_in_rss:                          1
hide_nsfw_in_timeline:                     1
number_albums_per_row_mobile:              3
cache_enabled:                             0
cache_ttl:                                 86400
low_number_of_shoots_per_day:              10
medium_number_of_shoots_per_day:           50
high_number_of_shoots_per_day:             100
maintenance_processing_limit:              5000
disable_recursive_permission_check:        1
exif_disabled_for_all:                     0
file_name_hidden:                          0
client_side_favourite_enabled:             0
default_old_settings:                      0
default_expert_settings:                   0
default_all_settings:                      0
disable_thumb_download:                    1
disable_thumb2x_download:                  1
disable_small_download:                    0
disable_small2x_download:                  0
disable_medium_download:                   0
disable_medium2x_download:                 0
temporary_image_link_enabled:              0
temporary_image_link_when_logged_in:       0
temporary_image_link_when_admin:           0
temporary_image_link_life_in_seconds:      86400
secure_image_link_enabled:                 0
SA_override_visibility:                    0
TA_override_visibility:                    0
enable_colour_extractions:                 0
colour_extraction_driver:                  farzai
home_page_default:                         gallery
timeline_page_enabled:                     1
timeline_quick_access_date_format_year:    Y
timeline_quick_access_date_format_month:   M
timeline_quick_access_date_format_day:     j M
timeline_quick_access_date_format_hour:    h M, g:i
flow_enabled:                              1
flow_public:                               0
flow_base:                                 
flow_max_items:                            10
flow_strategy:                             auto
flow_include_sub_albums:                   0
flow_include_photos_from_children:         0
flow_open_album_on_click:                  0
flow_display_open_album_button:            0
flow_highlight_first_picture:              1
flow_min_max_enabled:                      1
flow_display_statistics:                   1
flow_compact_mode_enabled:                 1
flow_image_header_enabled:                 1
flow_image_header_cover:                   cover
flow_image_header_height:                  24
flow_carousel_enabled:                     1
flow_carousel_height:                      6
date_format_flow_published:                M j, Y, g:i:s A e
date_format_flow_min_max:                  F Y
flow_blur_nsfw_enabled:                    1
hide_nsfw_in_flow:                         1
skip_duplicates_early:                     1
sync_delete_missing_photos:                0
sync_delete_missing_albums:                0
sync_dry_run:                              1
gallery_header_enabled:                    0
gallery_header_logged_in_enabled:          0
gallery_header:                            
gallery_header_bar_transparent:            1
gallery_header_bar_gradient:               1
import_via_url_forbidden_localhost:        1
import_via_url_forbidden_local_ip:         1
import_via_url_require_https:              1
import_via_url_forbidden_ports:            1
details_links_enabled:                     0
details_links_public:                      0
is_scroll_to_navigate_photos_enabled:      1
is_swipe_vertically_to_go_back_enabled:    1
photo_thumb_tags_enabled:                  0
hide_nsfw_in_tag_albums:                   1
hide_nsfw_in_tag_listing:                  1
sorting_pinned_albums_col:                 created_at
sorting_pinned_albums_order:               DESC
copyright_text:                            
watermark_enabled:                         0
watermark_photo_id:                        
watermark_public:                          1
watermark_logged_in_users_enabled:         0
renamer_enabled:                           0
renamer_enforced:                          0
renamer_enforced_before:                   0
renamer_enforced_after:                    0
renamer_photo_title_enabled:               1
renamer_album_title_enabled:               1
extract_zip_on_upload:                     1
webshop_currency:                          EUR
webshop_default_description:               No description provided.
webshop_allow_guest_checkout:              1
webshop_terms_url:                         
webshop_privacy_url:                       
webshop_default_price_cents:               0
webshop_default_license:                   personal
webshop_default_size:                      medium
enable_untagged:                           1
photos_pagination_limit:                   500
deduplicate_pinned_albums:                 0
desktop_dock_full_transparency_enabled:    0
mobile_dock_full_transparency_enabled:     0
import_via_url_block_redirect:             1
enable_smart_album_per_owner:              0
rating_enabled:                            1
rating_public:                             0
rating_show_only_when_user_rated:          0
rating_show_avg_in_details:                1
rating_photo_view_mode:                    hover
rating_show_avg_in_photo_view:             0
rating_album_view_mode:                    hover
rating_show_avg_in_album_view:             1
album_layout:                              grid
albums_per_page:                           30
albums_pagination_ui_mode:                 infinite_scroll
albums_infinite_scroll_threshold:          10
photos_per_page:                           100
photos_pagination_ui_mode:                 infinite_scroll
photos_infinite_scroll_threshold:          10
enable_propagate_unlock_option:            0
shared_albums_visibility_default:          show
enable_unrated:                            0
enable_1_star:                             0
enable_2_stars:                            0
enable_3_stars:                            0
enable_4_stars:                            1
enable_5_stars:                            1
enable_best_pictures:                      1
best_pictures_count:                       100
enable_photo_details_always_open:          0
enable_my_rated_pictures:                  1
enable_my_best_pictures:                   1
my_best_pictures_count:                    50
gps_coordinate_display:                    1
gps_coordinate_display_public:             0
photos_star_visibility:                    editor
album_enhanced_display_enabled:            0
album_header_size:                         half_screen
album_header_landing_title_enabled:        0
watermark_optout_disabled:                 0
raw_download_enabled:                      0
contact_form_enabled:                      0
contact_form_security_question:            
contact_form_security_answer:              
contact_form_custom_consent_required:      0
contact_form_custom_privacy_url:           
contact_form_header:                       
contact_form_headline:                     
contact_form_contact_method:               
contact_form_message_label:                
contact_form_message_answer:               
contact_form_custom_consent_text:          
contact_form_custom_submit_button_text:    
contact_form_thank_you_message:            
landing_background_landscape_mode:         static
landing_background_portrait_mode:          static
search_colour_distance:                    30

Browser & System [REQUIRED]

Browser: Any
Client: macOS
Server: Debian, with Lychee running in Docker

Please confirm (incomplete submissions will not be addressed)

• I have provided easy and step-by-step instructions to reproduce the bug.
• I understand my bug report will be removed if I haven't met the criteria above.
• I understand that if I am requested to provide more information, I must do so within 14 days or the bug report will be closed.