사용자 이름 및 / 또는 UID가있는 경우 nginx + lua + luarocks ljsyscall을 사용 하여이 작업을 수행 할 수 있습니다

다음과 같이 구성된 데비안 시스템에서 :

apt-get -y install nginx libnginx-mod-http-dav-ext libnginx-mod-http-lua luarocks
luarocks install ljsyscall

그리고 nginx는 다음과 같이 구성했습니다.

user  root;
worker_processes  1;

load_module modules/ngx_http_dav_ext_module.so;
load_module modules/ndk_http_module.so;
load_module modules/ngx_http_lua_module.so;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    sendfile        on;
    keepalive_timeout  65;
    gzip  on;

    server {
        listen      80;
        listen [::]:80;

        location / {
            rewrite ^ http://$host$request_uri?; # permanent;
        }
    }

    server {
        listen      443           ssl http2;
        listen [::]:443           ssl http2;

        ssl                       on;
        # [ SSL Sections Omitted ]

        # Set the maximum size of uploads
        client_max_body_size 200m;

        # Default is 60, May need to be increased for very large uploads
        client_body_timeout 120s;

        # other configs
        location /webdav/ {
            autoindex              on;
            alias                  /data/www/;
            client_body_temp_path  /data/client_temp;

            dav_methods PUT DELETE MKCOL COPY MOVE;
            dav_ext_methods PROPFIND OPTIONS;

            create_full_put_path   on;
            # Not sure if you want to tweak this
            # dav_access             group:rw  all:r;

            # Let's assume you have an auth subrequest that can set X-UID
            auth_request  /auth
            auth_request_set $auth_status $upstream_status;
            auth_request_set $saved_remote_user $upstream_http_REMOTE_USER;
            auth_request_set $saved_remote_uid $upstream_http_X_UID;

            # Per-Request Impersonation
            access_by_lua_block {
                # Boilerplate because ljsyscall doesn't have setfsuid implemented directly
                local syscall_api = require 'syscall'
                local ffi = require "ffi"
                local nr = require("syscall.linux.nr")
                local sys = nr.SYS
                local uint = ffi.typeof("unsigned int")
                local syscall_long = ffi.C.syscall -- returns long
                local function syscall(...) return tonumber(syscall_long(...)) end
                local function setfsuid(id) return syscall(sys.setfsuid, uint(id)) end
                -- If you only have ngx.var.saved_remote_user, install luaposix and do this ...
                -- local pwd = require 'posix.pwd'
                -- local new_uid = pwd.getpwnam(ngx.saved_remote_user).pw_uid
                local new_uid = tonumber(ngx.var.saved_remote_uid)
                ngx.log(ngx.NOTICE, "[Impersonating User #" .. new_uid .. "]")
                local previous = setfsuid(new_uid)
                local actual = setfsuid(new_uid)
                if actual ~= new_uid then
                    ngx.log(ngx.CRIT, "Unable to impersonate users")
                    ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
                end
            }
        }

        location = /auth {
            internal;
            proxy_pass              http://localhost:8080/auth;
            proxy_pass_request_body off;
            proxy_set_header        Content-Length "";
            proxy_set_header        X-Original-URI $request_uri;
            proxy_set_header        X-Original-Method $request_method;
        }
    }
}

이것은 nginx 워커가 서비스하는 모든 요청에 ​​대해 setfsuid를 실행합니다. 불행히도, 이것이 제대로 작동하려면 nginx를 루트로 실행해야합니다. 프로세스가 루트로 시작되고 CAP_SETUID가 보존 된 다른 사용자에게 드롭되고 (문서 참조 capsh) usernginx 구성 파일에 지시문이 없으면 다른 사용자와 함께 작업 할 수 있다고 생각 합니다.

잠재적으로 그룹 ID를 설정해야 할 수도 있습니다.

http://man7.org/linux/man-pages/man7/capabilities.7.html의 “기능에 대한 사용자 ID 변경의 영향”을 참조하십시오 .

답변

Alias /webdav1 /data/webdav1

<Location /webdav1>
DAV on
Authtype Basic
Authname "webdav1"
AuthUserFile /var/www/web1/passwd1.dav
Require valid-user
</location>

sh /usr/share/doc/apache2/examples/setup-instance myUser

export APACHE_RUN_USER=myUser
export APACHE_RUN_GROUP=myUser

# If you proxy with nginx as I did better to limit to local interface
listen localhost:8080
# listen 8080

htpasswd -c /etc/apache2/htpasswd myUser

<VirtualHost *:8080>

DocumentRoot /var/www/html

Alias /${APACHE_RUN_USER} /home/${APACHE_RUN_USER}
<Directory /home/${APACHE_RUN_USER}>
    Require all granted
    Options +Indexes
</Directory>

<Location /${APACHE_RUN_USER}>
      DAV On
      AuthType Basic
      AuthName "Restricted Area"
      AuthUserFile /etc/apache2/htpasswd
      Require valid-user
</Location>

DavLockDB /home/${APACHE_RUN_USER}/.DavLock
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

server {
listen 443 ssl http2;
server_name exemple.com;

location ~ ^/(myUser|icons)/ {

    proxy_pass http://dav-myUser;

#         auth_basic "Restricted Content";
#         auth_basic_user_file /etc/nginx/htpasswd;

#         proxy_set_header Authorization $http_authorization;

    proxy_pass_header  Authorization;
    proxy_pass_request_headers on;

    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-Host $http_host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-Proto $scheme;

    port_in_redirect off;

    # to avoid 502 Bad Gateway:
    # http://vanderwijk.info/Members/ivo/articles/ComplexSVNSetupFix
    set $destination $http_destination;

    if ($destination ~* ^https(.+)$) {
        set $destination http$1;
    }

    proxy_set_header Destination $destination;

    proxy_read_timeout     300;
    proxy_connect_timeout  5;

    # Default is HTTP/1, keepalive is only enabled in HTTP/1.1
    proxy_http_version 1.1;

    # Remove the Connection header if the client sends it,
    # it could be "close" to close a keepalive connection
    proxy_set_header Connection "";
}

ssl on;
ssl_certificate /etc/letsencrypt/live/exemple.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/exemple.com/privkey.pem;

include /etc/letsencrypt/options-ssl-nginx.conf;

}