#
# This is the security group that should be added to every instance
resource "openstack_networking_secgroup_v2" "default" {
  name                 = var.default_security_group_name
  delete_default_rules = "true"
  description          = "Default security group with rules for ssh access via jump proxy, prometheus scraping"
}

resource "openstack_networking_secgroup_rule_v2" "egress-ipv4" {
  security_group_id = openstack_networking_secgroup_v2.default.id
  direction         = "egress"
  ethertype         = "IPv4"
}

resource "openstack_networking_secgroup_rule_v2" "ingress-icmp" {
  security_group_id = openstack_networking_secgroup_v2.default.id
  description       = "Allow ICMP from remote"
  direction         = "ingress"
  ethertype         = "IPv4"
  remote_ip_prefix  = "0.0.0.0/0"
  protocol          = "icmp"
}

resource "openstack_networking_secgroup_rule_v2" "ssh-jump-proxy" {
  security_group_id = openstack_networking_secgroup_v2.default.id
  description       = "SSH traffic from the jump proxy"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 22
  port_range_max    = 22
  remote_ip_prefix  = var.basic_services_ip.ssh_jump_cidr
}

resource "openstack_networking_secgroup_rule_v2" "prometheus-node" {
  security_group_id = openstack_networking_secgroup_v2.default.id
  description       = "Prometheus access to the node exporter"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 9100
  port_range_max    = 9100
  remote_ip_prefix  = var.basic_services_ip.prometheus_cidr
}

#
# SSH access to the jump proxy. Used by the jump proxy VM only
resource "openstack_networking_secgroup_v2" "access_to_the_jump_proxy" {
  name                 = "ssh_access_to_the_jump_node"
  delete_default_rules = "true"
  description          = "Security group that allows SSH access to the jump node from a limited set of sources"
}

resource "openstack_networking_secgroup_rule_v2" "ssh-s2i2s-vpn-1" {
  security_group_id = openstack_networking_secgroup_v2.access_to_the_jump_proxy.id
  description       = "SSH traffic from S2I2S VPN 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 22
  port_range_max    = 22
  remote_ip_prefix  = var.ssh_sources.s2i2s_vpn_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "ssh-s2i2s-vpn-2" {
  security_group_id = openstack_networking_secgroup_v2.access_to_the_jump_proxy.id
  description       = "SSH traffic from S2I2S VPN 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 22
  port_range_max    = 22
  remote_ip_prefix  = var.ssh_sources.s2i2s_vpn_2_cidr
}

resource "openstack_networking_secgroup_rule_v2" "ssh-d4s-vpn-1" {
  security_group_id = openstack_networking_secgroup_v2.access_to_the_jump_proxy.id
  description       = "SSH traffic from D4Science VPN 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 22
  port_range_max    = 22
  remote_ip_prefix  = var.ssh_sources.d4s_vpn_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "ssh-d4s-vpn-2" {
  security_group_id = openstack_networking_secgroup_v2.access_to_the_jump_proxy.id
  description       = "SSH traffic from D4Science VPN 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 22
  port_range_max    = 22
  remote_ip_prefix  = var.ssh_sources.d4s_vpn_2_cidr
}

resource "openstack_networking_secgroup_rule_v2" "ssh-shell-d4s" {
  security_group_id = openstack_networking_secgroup_v2.access_to_the_jump_proxy.id
  description       = "SSH traffic from shell.d4science.org"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 22
  port_range_max    = 22
  remote_ip_prefix  = var.ssh_sources.shell_d4s_cidr
}

resource "openstack_networking_secgroup_rule_v2" "ssh-infrascience-net" {
  security_group_id = openstack_networking_secgroup_v2.access_to_the_jump_proxy.id
  description       = "SSH traffic from the InfraScience network"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 22
  port_range_max    = 22
  remote_ip_prefix  = var.ssh_sources.infrascience_net_cidr
}

# Debug via tunnel from the jump proxy node
resource "openstack_networking_secgroup_v2" "debugging" {
  name                 = "debugging_from_jump_node"
  delete_default_rules = "true"
  description          = "Security group that allows web app debugging via tunnel from the ssh jump node"
}

resource "openstack_networking_secgroup_rule_v2" "shell_8100" {
  security_group_id = openstack_networking_secgroup_v2.debugging.id
  description       = "Tomcat debug on port 8100 from the shell jump proxy"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 8100
  port_range_max    = 8100
  remote_ip_prefix  = var.basic_services_ip.ssh_jump_cidr
}

resource "openstack_networking_secgroup_rule_v2" "shell_80" {
  security_group_id = openstack_networking_secgroup_v2.debugging.id
  description       = "http debug port 80 from the shell jump proxy"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 80
  port_range_max    = 80
  remote_ip_prefix  = var.basic_services_ip.ssh_jump_cidr
}

resource "openstack_networking_secgroup_rule_v2" "shell_443" {
  security_group_id = openstack_networking_secgroup_v2.debugging.id
  description       = "https debug port 443 from the shell jump proxy"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.basic_services_ip.ssh_jump_cidr
}

# Traffic from the main HAPROXY load balancers
# Use on the web services that are exposed through the main HAPROXY
resource "openstack_networking_secgroup_v2" "traffic_from_main_haproxy" {
  name                 = "traffic_from_the_main_load_balancers"
  delete_default_rules = "true"
  description          = "Allow traffic from the main L7 HAPROXY load balancers"
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-1-80" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTP traffic from HAPROXY L7 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 80
  port_range_max    = 80
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-2-80" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTP traffic from HAPROXY L7 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 80
  port_range_max    = 80
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_2_cidr
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-1-443" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTPS traffic from HAPROXY L7 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-2-443" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTPS traffic from HAPROXY L7 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_2_cidr
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-1-8080" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTP traffic from HAPROXY L7 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 8080
  port_range_max    = 8080
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-2-8080" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTP traffic from HAPROXY L7 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 8080
  port_range_max    = 8080
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_2_cidr
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-1-8888" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTP traffic from HAPROXY L7 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 8888
  port_range_max    = 8888
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "haproxy-l7-2-8888" {
  security_group_id = openstack_networking_secgroup_v2.traffic_from_main_haproxy.id
  description       = "HTTP traffic from HAPROXY L7 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 8888
  port_range_max    = 8888
  remote_ip_prefix  = var.basic_services_ip.haproxy_l7_2_cidr
}

# Security group that exposes web services directly. A floating IP is required.
resource "openstack_networking_secgroup_v2" "public_web" {
  name                 = "public_web_service"
  delete_default_rules = "true"
  description          = "Security group that allows HTTPS and HTTP from everywhere, for the services that are not behind any load balancer"
}

resource "openstack_networking_secgroup_rule_v2" "public_http" {
  security_group_id = openstack_networking_secgroup_v2.public_web.id
  description       = "Allow HTTP from everywhere"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 80
  port_range_max    = 80
  remote_ip_prefix  = "0.0.0.0/0"
}

resource "openstack_networking_secgroup_rule_v2" "public_https" {
  security_group_id = openstack_networking_secgroup_v2.public_web.id
  description       = "Allow HTTPS from everywhere"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = "0.0.0.0/0"
}

# HTTP and HTTPS access through the VPN nodes. Floating IP is required
resource "openstack_networking_secgroup_v2" "restricted_web" {
  name                 = "restricted_web_service"
  delete_default_rules = "true"
  description          = "Security group that restricts HTTPS sources to the VPN nodes and shell.d4science.org. HTTP is open to all, because letsencrypt"
}

resource "openstack_networking_secgroup_rule_v2" "http_from_everywhere" {
  security_group_id = openstack_networking_secgroup_v2.restricted_web.id
  description       = "Allow HTTP from everywhere"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 80
  port_range_max    = 80
  remote_ip_prefix  = "0.0.0.0/0"
}

resource "openstack_networking_secgroup_rule_v2" "https_from_d4s_vpn_1" {
  security_group_id = openstack_networking_secgroup_v2.restricted_web.id
  description       = "Allow HTTPS from D4Science VPN 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.ssh_sources.d4s_vpn_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "https_from_d4s_vpn_2" {
  security_group_id = openstack_networking_secgroup_v2.restricted_web.id
  description       = "Allow HTTPS from D4Science VPN 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.ssh_sources.d4s_vpn_2_cidr
}

resource "openstack_networking_secgroup_rule_v2" "https_from_s2i2s_vpn_1" {
  security_group_id = openstack_networking_secgroup_v2.restricted_web.id
  description       = "Allow HTTPS from S2I2S VPN 1"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.ssh_sources.s2i2s_vpn_1_cidr
}

resource "openstack_networking_secgroup_rule_v2" "https_from_s2i2s_vpn_2" {
  security_group_id = openstack_networking_secgroup_v2.restricted_web.id
  description       = "Allow HTTPS from S2I2S VPN 2"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.ssh_sources.s2i2s_vpn_2_cidr
}

resource "openstack_networking_secgroup_rule_v2" "https_from_shell_d4s" {
  security_group_id = openstack_networking_secgroup_v2.restricted_web.id
  description       = "Allow HTTPS from shell.d4science.org"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.ssh_sources.shell_d4s_cidr
}

resource "openstack_networking_secgroup_v2" "prometheus_access_from_grafana" {
  name                 = "prometheus_access_from_grafana"
  delete_default_rules = "true"
  description          = "The public grafana server must be able to get data from Prometheus"
}

resource "openstack_networking_secgroup_rule_v2" "grafana_d4s" {
  security_group_id = openstack_networking_secgroup_v2.prometheus_access_from_grafana.id
  description       = "Allow HTTPS from grafana.d4science.org"
  direction         = "ingress"
  ethertype         = "IPv4"
  protocol          = "tcp"
  port_range_min    = 443
  port_range_max    = 443
  remote_ip_prefix  = var.prometheus_server_data.public_grafana_server_cidr
}