[Bug]: auth provider redirect URL is wrong for custom public API port

Contact Details

No response

What happened?

Hi,

it seems like a custom API public port is not considered properly for the redirect URL given to OAuth providers. Whenever I try to log in via SSO on my Netmaker dashboard deployed using Docker Compose, I get redirected to port 443 on https://api.NM_DOMAIN/api/oauth/callback.

Therefore, I started looking into the source code and found out that

https://github.com/gravitl/netmaker/blob/089df3d4cffe3723ed1563ba01da05eab5962d94/auth/auth.go#L84C2-L91C3

seems to be the issue, because APIHost shouldn't contain the public port. Currently, my setup looks like the following:

I replaced Caddy with an nginx reverse proxy container for testing, but the issue was already occurring with Caddy.

docker-compose.yml:

version: "3.4"

services:

  netmaker:
    container_name: netmaker
    image: gravitl/netmaker:$SERVER_IMAGE_TAG
    env_file: ./netmaker.env
    restart: always
    volumes:
      - dnsconfig:/root/config/dnsconfig
      - sqldata:/root/data
    environment:
      # config-dependant vars
      - STUN_LIST=stun1.netmaker.io:3478,stun2.netmaker.io:3478,stun1.l.google.com:19302,stun2.l.google.com:19302
      # The domain/host IP indicating the mq broker address
      - BROKER_ENDPOINT=wss://broker.${NM_DOMAIN}:14145 # For EMQX broker use `BROKER_ENDPOINT=wss://broker.${NM_DOMAIN}/mqtt`
      # For EMQX broker (uncomment the two lines below)
      #- BROKER_TYPE=emqx
      #- EMQX_REST_ENDPOINT=http://mq:18083
      # The base domain of netmaker
      - SERVER_NAME=${NM_DOMAIN}
      - SERVER_API_CONN_STRING=api.${NM_DOMAIN}:14145
      # Address of the CoreDNS server. Defaults to SERVER_HOST
      - COREDNS_ADDR=${SERVER_HOST}
      # Overrides SERVER_HOST if set. Useful for making HTTP available via different interfaces/networks.
      #- SERVER_HTTP_HOST=api.${NM_DOMAIN}
  netmaker-ui:
    container_name: netmaker-ui
    image: gravitl/netmaker-ui:$UI_IMAGE_TAG
    env_file: ./netmaker.env
    environment:
      # config-dependant vars
      # URL where UI will send API requests. Change based on SERVER_HOST, SERVER_HTTP_HOST, and API_PORT
      BACKEND_URL: "https://api.${NM_DOMAIN}:14145"
    depends_on:
      - netmaker
    links:
      - "netmaker:api"
    restart: always
  nginx:
    image: nginx:alpine-slim
    volumes:
      - "./proxy.conf:/etc/nginx/conf.d/default.conf"
      - "/etc/letsencrypt/live/${NM_DOMAIN}/fullchain.pem:/etc/letsencrypt/live/${NM_DOMAIN}/fullchain.pem"
      - "/etc/letsencrypt/live/${NM_DOMAIN}/privkey.pem:/etc/letsencrypt/live/${NM_DOMAIN}/privkey.pem"
    ports:
      - "14135:80"
      - "14145:443"
    restart: always
  coredns:
    network_mode: host
    container_name: coredns
    image: coredns/coredns:1.10.1
    command: -conf /root/dnsconfig/Corefile
    env_file: ./netmaker.env
    depends_on:
      - netmaker
    restart: always
    volumes:
      - dnsconfig:/root/dnsconfig
  mq:
    container_name: mq
    image: eclipse-mosquitto:2.0.15-openssl
    env_file: ./netmaker.env
    depends_on:
      - netmaker
    restart: unless-stopped
    command: [ "/mosquitto/config/wait.sh" ]
    volumes:
      - ./mosquitto.conf:/mosquitto/config/mosquitto.conf
      - ./wait.sh:/mosquitto/config/wait.sh
      - mosquitto_logs:/mosquitto/log
      - mosquitto_data:/mosquitto/data
volumes:
  caddy_data: { } # runtime data for caddy
  caddy_conf: { } # configuration file for Caddy
  sqldata: { }
  dnsconfig: { } # storage for coredns
  mosquitto_logs: { } # storage for mqtt logs
  mosquitto_data: { } # storage for mqtt data

netmaker.env:

NM_EMAIL=<hidden>
NM_DOMAIN=<hidden>
UI_IMAGE_TAG=v0.22.0
NETMAKER_TENANT_ID=
LICENSE_KEY=
SERVER_IMAGE_TAG=v0.22.0
SERVER_HOST=<hidden>
MASTER_KEY=<hidden>
MQ_USERNAME=netmaker
MQ_PASSWORD=<hidden>
INSTALL_TYPE=ce
NODE_ID=netmaker-server-1
DNS_MODE=on
NETCLIENT_AUTO_UPDATE=enabled
API_PORT=8081
CORS_ALLOWED_ORIGIN=*
DISPLAY_KEYS=on
DATABASE=sqlite
SERVER_BROKER_ENDPOINT=ws://mq:1883
VERBOSITY=1
DEBUG_MODE=off
REST_BACKEND=on
DISABLE_REMOTE_IP_CHECK=off
TELEMETRY=on
AUTH_PROVIDER=oidc
CLIENT_ID=<hidden>
CLIENT_SECRET=<hidden>
FRONTEND_URL=https://<hidden>:14145
AZURE_TENANT=
OIDC_ISSUER=<hidden>
EXPORTER_API_PORT=8085
JWT_VALIDITY_DURATION=43200
RAC_AUTO_DISABLE=true
CACHING_ENABLED=true
METRICS_EXPORTER=off
PROMETHEUS=off

Although I'm using v0.22.0, the bug doesn't seem to be fixed in v0.23.0 according to the source code, so I don't think upgrading would fix the problem.

Version

v0.22.0

What OS are you using?

No response

Relevant log output

No response

Contributing guidelines

[X] Yes, I did.

gravitl / netmaker