Describe the bug
Everytime an external service tries to communicate with Social the messages cannot be processed and result in a UnauthorizedFediverseException
When I dig into the SignatureService while debugging to find the cause, I find that the exception thrown is the SignatureException
Describe the bug Everytime an external service tries to communicate with Social the messages cannot be processed and result in a UnauthorizedFediverseException
When I dig into the SignatureService while debugging to find the cause, I find that the exception thrown is the SignatureException
https://github.com/nextcloud/social/blob/c8bf03bf3f68f4203f102ecbeb3b482443e11c16/lib/Service/SignatureService.php#L360
This is a bug already mentioned in https://github.com/nextcloud/social/issues/375 and https://github.com/nextcloud/social/issues/269
The origin of the distant server is correctly detected, but for an unknown reason, the signature verification fails https://github.com/nextcloud/social/blob/c8bf03bf3f68f4203f102ecbeb3b482443e11c16/lib/Service/SignatureService.php#L399
My setup is the following :
To Reproduce Steps to reproduce the behavior:
Expected behavior
No SignatureException in the log.
You'll find in the details my nginx configuration, there is maybe an error with it, but I can't find it.
Client details:
Server details
**Social app version:** 0.6.1 **Operating system**: Debian 11.7 **Web server:** nginx/1.18.0 **Database:** mysql Ver 15.1 Distrib 10.5.19-MariaDB, for debian-linux-gnu (x86_64) using EditLine wrapper **PHP version:** PHP 8.2.7 **Nextcloud version:** [Nextcloud Hub 5](https://nextcloud.com/) (27.0.0)Logs
#### Nextcloud log (data/nextcloud.log) ```json {"reqId":"zQnx9t9ps8FvFa8MqIEg","level":2,"time":"July 09, 2023 17:23:34","remoteAddr":"192.168.144.1","user":"--","app":"no app in context","method":"POST","url":"/index.phpal/inbox","message":"500 - {\"status\":-1,\"exception\":\"OCA\\\\Social\\\\Exceptions\\\\UnauthorizedFediverseException\",\"message\":\"Empty Origin\"}","userAgent":"http.rb/5.1.1 (Mastodon/4.1.4; +https://MASTODON_SERVER_URL/)","version":"27.0.0.8","data":[]} ``` #### Nginx configuration (443, with custom domain) ```nginx upstream nextcloud { server 127.0.0.1:9003; } server { listen 443 ssl http2; server_name NC_DOMAIN; root /var/www/default/; index index.php; client_max_body_size 1G; location = /robots.txt { access_log off; log_not_found off; } location = /favicon.ico { access_log off; log_not_found off; } # Deny access to .htaccess files, if Apache's document root concurs with nginx's one location /.ht { deny all; } # Deny access to hidden dotfiles (beginning with '.') location /. { deny all; } access_log /var/log/nginx/NC_DOMAIN.access.log combined; error_log /var/log/nginx/NC_DOMAIN.error.log; location / { include proxy_params; proxy_pass_request_headers on; proxy_pass http://nextcloud; } # Make a regex exception for `/.well-known` so that clients can still # access it despite the existence of the regex rule # `location ~ /(\.|autotest|...)` which would otherwise handle requests # for `/.well-known`. location ^~ /.well-known { # The rules in this block are an adaptation of the rules # in `.htaccess` that concern `/.well-known`. location = /.well-known/carddav { return 301 /remote.php/dav/; } location = /.well-known/caldav { return 301 /remote.php/dav/; } #location = /.well-known/webfinger { return 301 /public.php?service=webfinger; } location /.well-known/acme-challenge { try_files $uri $uri/ =404; } location /.well-known/pki-validation { try_files $uri $uri/ =404; } # Anything else is dynamically handled by Nextcloud location ^~ /.well-known { return 301 $scheme://$host/index.php$uri$is_args$args; } try_files $uri $uri/ =404; } # https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/ # Send cert validity information ourselves, so the user does not have to ask the CA (who # then knows the user visited the website). # Test with openssl s_client -connect www.example.com:443 -servername www.example.com -status < /dev/null | grep OCSP ssl_stapling on; ssl_stapling_verify on; resolver 1.1.1.1; # https://ssl-config.mozilla.org/#server=nginx&version=1.14.2&config=modern&openssl=1.1.1d&hsts=false&guideline=5.6 ssl_certificate /etc/letsencrypt/live/NC_DOMAIN/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/NC_DOMAIN/privkey.pem; ssl_trusted_certificate /etc/letsencrypt/live/NC_DOMAIN/chain.pem; ssl_session_timeout 1d; ssl_session_cache shared:MozSSL:10m; # about 40000 sessions ssl_session_tickets off; # modern configuration ssl_protocols TLSv1.3; ssl_prefer_server_ciphers off; } server { listen 80; server_name NC_DOMAIN; return 301 https://$host$request_uri; } ``` #### Nginx configuration (from linux server container) ```nginx ## Version 2023/06/23 - Changelog: https://github.com/linuxserver/docker-nextcloud/commits/master/root/defaults/nginx/site-confs/default.conf.sample # Set the `immutable` cache control options only for assets with a cache busting `v` argument map $arg_v $asset_immutable { "" ""; default "immutable"; } server { listen 80 default_server; listen [::]:80 default_server; listen 443 ssl http2 default_server; listen [::]:443 ssl http2 default_server; server_name _; include /config/nginx/ssl.conf; root /app/www/public; # Add headers to serve security related headers # Before enabling Strict-Transport-Security headers please read into this # topic first. add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;" always; # display real ip in nginx logs when connected through reverse proxy via docker network set_real_ip_from 172.16.0.0/12; real_ip_header X-Forwarded-For; # https://docs.nextcloud.com/server/latest/admin_manual/installation/nginx.html#nextcloud-in-the-webroot-of-nginx # set max upload size and increase upload timeout: client_max_body_size 1G; client_body_timeout 300s; fastcgi_buffers 64 4K; # Enable gzip but do not remove ETag headers gzip on; gzip_vary on; gzip_comp_level 4; gzip_min_length 256; gzip_proxied expired no-cache no-store private no_last_modified no_etag auth; gzip_types application/atom+xml application/javascript application/json application/ld+json application/manifest+json application/rss+xml application/vnd.geo+json application/vnd.ms-fontobject application/wasm application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/bmp image/svg+xml image/x-icon text/cache-manifest text/css text/plain text/vcard text/vnd.rim.location.xloc text/vtt text/x-component text/x-cross-domain-policy; # Pagespeed is not supported by Nextcloud, so if your server is built # with the `ngx_pagespeed` module, uncomment this line to disable it. #pagespeed off; # The settings allows you to optimize the HTTP2 bandwitdth. # See https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/ # for tunning hints client_body_buffer_size 512k; # HTTP response headers borrowed from Nextcloud `.htaccess` add_header Referrer-Policy "no-referrer" always; add_header X-Content-Type-Options "nosniff" always; add_header X-Download-Options "noopen" always; add_header X-Frame-Options "SAMEORIGIN" always; add_header X-Permitted-Cross-Domain-Policies "none" always; add_header X-Robots-Tag "noindex, nofollow" always; add_header X-XSS-Protection "1; mode=block" always; # Remove X-Powered-By, which is an information leak fastcgi_hide_header X-Powered-By; # Specify how to handle directories -- specifying `/index.php$request_uri` # here as the fallback means that Nginx always exhibits the desired behaviour # when a client requests a path that corresponds to a directory that exists # on the server. In particular, if that directory contains an index.php file, # that file is correctly served; if it doesn't, then the request is passed to # the front-end controller. This consistent behaviour means that we don't need # to specify custom rules for certain paths (e.g. images and other assets, # `/updater`, `/ocm-provider`, `/ocs-provider`), and thus # `try_files $uri $uri/ /index.php$request_uri` # always provides the desired behaviour. index index.php index.html /index.php$request_uri; # Rule borrowed from `.htaccess` to handle Microsoft DAV clients location = / { if ( $http_user_agent ~ ^DavClnt ) { return 302 /remote.php/webdav/$is_args$args; } } location = /robots.txt { allow all; log_not_found off; access_log off; } #rewrite ^/.well-known/webfinger /public.php?service=webfinger last; # Make a regex exception for `/.well-known` so that clients can still # access it despite the existence of the regex rule # `location ~ /(\.|autotest|...)` which would otherwise handle requests # for `/.well-known`. location ^~ /.well-known { # The rules in this block are an adaptation of the rules # in `.htaccess` that concern `/.well-known`. location = /.well-known/carddav { return 301 /remote.php/dav/; } location = /.well-known/caldav { return 301 /remote.php/dav/; } #location = /.well-known/webfinger { return 301 /public.php?service=webfinger; } location /.well-known/acme-challenge { try_files $uri $uri/ =404; } location /.well-known/pki-validation { try_files $uri $uri/ =404; } # Anything else is dynamically handled by Nextcloud location ^~ /.well-known { return 301 $scheme://$host/index.php$uri; } try_files $uri $uri/ =404; # return 301 /index.php$request_uri; } # Rules borrowed from `.htaccess` to hide certain paths from clients location ~ ^/(?:build|tests|config|lib|3rdparty|templates|data)(?:$|/) { return 404; } location ~ ^/(?:\.|autotest|occ|issue|indie|db_|console) { return 404; } # Ensure this block, which passes PHP files to the PHP process, is above the blocks # which handle static assets (as seen below). If this block is not declared first, # then Nginx will encounter an infinite rewriting loop when it prepends `/index.php` # to the URI, resulting in a HTTP 500 error response. location ~ \.php(?:$|/) { # Required for legacy support rewrite ^/(?!index|remote|public|cron|core\/ajax\/update|status|ocs\/v[12]|updater\/.+|oc[ms]-provider\/.+|.+\/richdocumentscode\/proxy) /index.php$request_uri; fastcgi_split_path_info ^(.+?\.php)(/.*)$; set $path_info $fastcgi_path_info; try_files $fastcgi_script_name =404; include /etc/nginx/fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param PATH_INFO $path_info; fastcgi_param modHeadersAvailable true; # Avoid sending the security headers twice fastcgi_param front_controller_active true; # Enable pretty urls fastcgi_pass 127.0.0.1:9000; fastcgi_intercept_errors on; fastcgi_request_buffering off; fastcgi_max_temp_file_size 0; } location ~ \.(?:css|js|svg|gif|png|jpg|ico|wasm|tflite|map)$ { try_files $uri /index.php$request_uri; add_header Cache-Control "public, max-age=15778463, $asset_immutable"; access_log off; # Optional: Don't log access to assets location ~ \.wasm$ { default_type application/wasm; } } location ~ \.woff2?$ { try_files $uri /index.php$request_uri; expires 7d; # Cache-Control policy borrowed from `.htaccess` access_log off; # Optional: Don't log access to assets } # Rule borrowed from `.htaccess` location /remote { return 301 /remote.php$request_uri; } location / { # enable for basic auth #auth_basic "Restricted"; #auth_basic_user_file /config/nginx/.htpasswd; try_files $uri $uri/ /index.php$request_uri; } # deny access to .htaccess/.htpasswd files location ~ /\.ht { deny all; } # https://help.nextcloud.com/t/warning-rainloop-data-folder-is-accessible/33033/2 location ^~ /apps/rainloop/app/data { deny all; } } ```