Integrate LEDE image builder

certidude/api/__init__.py

@@ -82,7 +82,7 @@ class SessionResource(object):
                 attributes = {}
                 for key in listxattr(path):
                     if key.startswith(b"user.machine."):
-                        attributes[key[13:]] = getxattr(path, key).decode("ascii")
+                        attributes[key[13:].decode("ascii")] = getxattr(path, key).decode("ascii")
 
                 # Extract lease information from filesystem
                 try:
@@ -131,6 +131,9 @@ class SessionResource(object):
             ),
             request_submission_allowed = config.REQUEST_SUBMISSION_ALLOWED,
             authority = dict(
+                builder = dict(
+                    profiles = config.IMAGE_BUILDER_PROFILES
+                ),
                 tagging = [dict(name=t[0], type=t[1], title=t[2]) for t in config.TAG_TYPES],
                 lease = dict(
                     offline = 600, # Seconds from last seen activity to consider lease offline, OpenVPN reneg-sec option
@@ -208,6 +211,7 @@ def certidude_app(log_handlers=[]):
     from .attrib import AttributeResource
     from .bootstrap import BootstrapResource
     from .token import TokenResource
+    from .builder import ImageBuilderResource
 
     app = falcon.API(middleware=NormalizeMiddleware())
     app.req_options.auto_parse_form_urlencoded = True
@@ -240,6 +244,9 @@ def certidude_app(log_handlers=[]):
     # Bootstrap resource
     app.add_route("/api/bootstrap/", BootstrapResource())
 
+    # LEDE image builder resource
+    app.add_route("/api/build/{profile}/{suggested_filename}", ImageBuilderResource())
+
     # Add CRL handler if we have any whitelisted subnets
     if config.CRL_SUBNETS:
         from .revoked import RevocationListResource

certidude/api/builder.py

@@ -0,0 +1,52 @@
+
+import click
+import falcon
+import logging
+import os
+import subprocess
+from certidude import config, const
+from certidude.auth import login_required, authorize_admin
+from jinja2 import Template
+
+logger = logging.getLogger(__name__)
+
+class ImageBuilderResource(object):
+    @login_required
+    @authorize_admin
+    def on_get(self, req, resp, profile, suggested_filename):
+        model = config.cp2.get(profile, "model")
+        build_script_path = config.cp2.get(profile, "command")
+        overlay_path = config.cp2.get(profile, "overlay")
+        site_script_path = config.cp2.get(profile, "script")
+        suffix = config.cp2.get(profile, "filename")
+
+        build = "/var/lib/certidude/builder/" + profile
+        if not os.path.exists(build + "/overlay/etc/uci-defaults"):
+            os.makedirs(build + "/overlay/etc/uci-defaults")
+        os.system("rsync -av " + overlay_path + "/ " + build + "/overlay/")
+
+        if site_script_path:
+            template = Template(open(site_script_path).read())
+            with open(build + "/overlay/etc/uci-defaults/99-site-config", "w") as fh:
+                fh.write(template.render(authority_name=const.FQDN))
+
+        proc = subprocess.Popen(("/bin/bash", build_script_path),
+            stdout=open(build + "/build.log", "w"), stderr=subprocess.STDOUT,
+            close_fds=True, shell=False,
+            cwd=build,
+            env={"PROFILE":model, "PATH":"/usr/sbin:/usr/bin:/sbin:/bin"},
+            startupinfo=None, creationflags=0)
+        proc.communicate()
+
+        for dname in os.listdir(build):
+            if dname.startswith("lede-imagebuilder-"):
+                for root, dirs, files in os.walk(os.path.join(build, dname, "bin", "targets")):
+                    for filename in files:
+                        if filename.endswith(suffix):
+                            path = os.path.join(root, filename)
+                            click.echo("Serving: %s" % path)
+                            resp.body = open(path, "rb").read()
+                            resp.set_header("Content-Disposition", ("attachment; filename=%s" % suggested_filename))
+                            return
+        raise falcon.HTTPNotFound()
+

certidude/api/script.py

@@ -1,5 +1,6 @@
 import falcon
 import logging
+import os
 from certidude import const, config, authority
 from certidude.decorators import serialize
 from jinja2 import Environment, FileSystemLoader
@@ -26,9 +27,10 @@ class ScriptResource():
         except AttributeError: # No tags
             pass
 
-        script = named_tags.get("script", config.SCRIPT_DEFAULT)
+        script = named_tags.get("script", "default.sh")
+        assert script in os.listdir(config.SCRIPT_DIR)
         resp.set_header("Content-Type", "text/x-shellscript")
-        resp.body = env.get_template(script).render(
+        resp.body = env.get_template(os.path.join(script)).render(
             authority_name=const.FQDN,
             common_name=cn,
             other_tags=other_tags,

certidude/cli.py

@@ -96,7 +96,7 @@ def setup_client(prefix="client_", dh=False):
 @click.option("-s", "--skip-self", default=False, is_flag=True, help="Skip self enroll")
 @click.option("-nw", "--no-wait", default=False, is_flag=True, help="Return immideately if server doesn't autosign")
 def certidude_enroll(fork, renew, no_wait, kerberos, skip_self):
-    if not skip_self and os.path.exists(const.CONFIG_PATH):
+    if not skip_self and os.path.exists(const.SERVER_CONFIG_PATH):
         click.echo("Self-enrolling authority's web interface certificate")
         from certidude import authority
         authority.self_enroll()
@@ -944,19 +944,23 @@ def certidude_setup_openvpn_networkmanager(authority, remote, common_name, **pat
 @click.option("--directory", help="Directory for authority files")
 @click.option("--server-flags", is_flag=True, help="Add TLS Server and IKE Intermediate extended key usage flags")
 @click.option("--outbox", default="smtp://smtp.%s" % const.DOMAIN, help="SMTP server, smtp://smtp.%s by default" % const.DOMAIN)
+@click.option("--skip-packages", is_flag=True, help="Don't attempt to install apt/pip/npm packages")
 @fqdn_required
-def certidude_setup_authority(username, kerberos_keytab, nginx_config, country, state, locality, organization, organizational_unit, common_name, directory, authority_lifetime, push_server, outbox, server_flags, title):
+def certidude_setup_authority(username, kerberos_keytab, nginx_config, country, state, locality, organization, organizational_unit, common_name, directory, authority_lifetime, push_server, outbox, server_flags, title, skip_packages):
     assert os.getuid() == 0 and os.getgid() == 0, "Authority can be set up only by root"
 
     import pwd
     from jinja2 import Environment, PackageLoader
     env = Environment(loader=PackageLoader("certidude", "templates"), trim_blocks=True)
 
+    if skip_packages:
+        click.echo("Not attempting to install packages from APT as requested...")
+    else:
         click.echo("Installing packages...")
         os.system("apt-get install -qq -y cython3 python3-dev python3-mimeparse \
             python3-markdown python3-pyxattr python3-jinja2 python3-cffi \
             software-properties-common libsasl2-modules-gssapi-mit npm nodejs \
-        libkrb5-dev libldap2-dev libsasl2-dev")
+            libkrb5-dev libldap2-dev libsasl2-dev gawk libncurses5-dev")
         os.system("pip3 install -q --upgrade gssapi falcon humanize ipaddress simplepam")
         os.system("pip3 install -q --pre --upgrade python-ldap")
 
@@ -1036,6 +1040,9 @@ def certidude_setup_authority(username, kerberos_keytab, nginx_config, country,
     else:
         click.echo("Warning: /etc/krb5.keytab or /etc/samba/smb.conf not found, Kerberos unconfigured")
 
+    doc_path = os.path.join(os.path.realpath(os.path.dirname(os.path.dirname(__file__))), "doc")
+    script_dir = os.path.join(os.path.realpath(os.path.dirname(__file__)), "templates", "script")
+
     static_path = os.path.join(os.path.realpath(os.path.dirname(__file__)), "static")
     certidude_path = sys.argv[0]
 
@@ -1057,6 +1064,13 @@ def certidude_setup_authority(username, kerberos_keytab, nginx_config, country,
     else:
         click.echo("Not systemd based OS, don't know how to set up initscripts")
 
+    if os.path.exists("/etc/certidude/builder.conf"):
+        click.echo("Image builder config /etc/certidude/builder.conf already exists, remove to regenerate")
+    else:
+        with open("/etc/certidude/builder.conf", "w") as fh:
+            fh.write(env.get_template("server/builder.conf").render(vars()))
+        click.echo("File /etc/certidude/builder.conf created")
+
     assert os.getuid() == 0 and os.getgid() == 0
     bootstrap_pid = os.fork()
     if not bootstrap_pid:
@@ -1069,6 +1083,9 @@ def certidude_setup_authority(username, kerberos_keytab, nginx_config, country,
                 os.makedirs(subdir)
 
         # Install JavaScript pacakges
+        if skip_packages:
+            click.echo("Not attempting to install packages from NPM as requested...")
+        else:
             os.system("npm install --silent -g nunjucks@2.5.2 nunjucks-date@1.2.0 node-forge bootstrap@4.0.0-alpha.6 jquery timeago tether font-awesome qrcode-svg")
 
         # Compile nunjucks templates
@@ -1109,14 +1126,14 @@ def certidude_setup_authority(username, kerberos_keytab, nginx_config, country,
         if not os.path.exists(const.CONFIG_DIR):
             click.echo("Creating %s" % const.CONFIG_DIR)
             os.makedirs(const.CONFIG_DIR)
-        if os.path.exists(const.CONFIG_PATH):
+        if os.path.exists(const.SERVER_CONFIG_PATH):
-            click.echo("Configuration file %s already exists, remove to regenerate" % const.CONFIG_PATH)
+            click.echo("Configuration file %s already exists, remove to regenerate" % const.SERVER_CONFIG_PATH)
         else:
             os.umask(0o137)
             push_token = "".join([random.choice(string.ascii_letters + string.digits) for j in range(0,32)])
-            with open(const.CONFIG_PATH, "w") as fh:
+            with open(const.SERVER_CONFIG_PATH, "w") as fh:
                 fh.write(env.get_template("server/server.conf").render(vars()))
-            click.echo("Generated %s" % const.CONFIG_PATH)
+            click.echo("Generated %s" % const.SERVER_CONFIG_PATH)
 
         # Create directory with 755 permissions
         os.umask(0o022)
@@ -1183,7 +1200,7 @@ def certidude_setup_authority(username, kerberos_keytab, nginx_config, country,
         from certidude import authority
         authority.self_enroll()
         assert os.getuid() == 0 and os.getgid() == 0, "Enroll contaminated environment"
-        click.echo("To enable e-mail notifications install Postfix as sattelite system and set mailer address in %s" % const.CONFIG_PATH)
+        click.echo("To enable e-mail notifications install Postfix as sattelite system and set mailer address in %s" % const.SERVER_CONFIG_PATH)
         click.echo()
         click.echo("Use following commands to inspect the newly created files:")
         click.echo()
@@ -1337,7 +1354,7 @@ def certidude_serve(port, listen, fork):
     if port == 80:
         click.echo("WARNING: Please run Certidude behind nginx, remote address is assumed to be forwarded by nginx!")
 
-    click.echo("Using configuration from: %s" % const.CONFIG_PATH)
+    click.echo("Using configuration from: %s" % const.SERVER_CONFIG_PATH)
 
     log_handlers = []
 

certidude/config.py

@@ -12,7 +12,7 @@ from random import choice
 # Options that are parsed from config file are fetched here
 
 cp = configparser.RawConfigParser()
-cp.readfp(codecs.open(const.CONFIG_PATH, "r", "utf8"))
+cp.readfp(open(const.SERVER_CONFIG_PATH, "r"))
 
 AUTHENTICATION_BACKENDS = set([j for j in
     cp.get("authentication", "backends").split(" ") if j])   # kerberos, pam, ldap
@@ -99,7 +99,10 @@ TOKEN_SECRET = cp.get("token", "secret").encode("ascii")
 # TODO: Check if we don't have base or servers
 
 # The API call for looking up scripts uses following directory as root
-SCRIPT_DIR = os.path.join(os.path.dirname(__file__), "templates", "script")
+SCRIPT_DIR = cp.get("script", "path")
-SCRIPT_DEFAULT = "default.sh"
 
 PROFILES = OrderedDict([[i, [j.strip() for j in cp.get("profile", i).split(",")]] for i in cp.options("profile")])
+
+cp2 = configparser.RawConfigParser()
+cp2.readfp(open(const.BUILDER_CONFIG_PATH, "r"))
+IMAGE_BUILDER_PROFILES = [(j, cp2.get(j, "title"), cp2.get(j, "rename")) for j in cp2.sections()]

certidude/const.py

@@ -7,7 +7,8 @@ import sys
 KEY_SIZE = 1024 if os.getenv("TRAVIS") else 4096
 RUN_DIR = "/run/certidude"
 CONFIG_DIR = "/etc/certidude"
-CONFIG_PATH = os.path.join(CONFIG_DIR, "server.conf")
+SERVER_CONFIG_PATH = os.path.join(CONFIG_DIR, "server.conf")
+BUILDER_CONFIG_PATH = os.path.join(CONFIG_DIR, "builder.conf")
 CLIENT_CONFIG_PATH = os.path.join(CONFIG_DIR, "client.conf")
 SERVICES_CONFIG_PATH = os.path.join(CONFIG_DIR, "services.conf")
 SERVER_PID_PATH = os.path.join(RUN_DIR, "server.pid")

certidude/firewall.py

@@ -1,6 +1,8 @@
 
 import falcon
 import logging
+import click
+from asn1crypto import pem, x509
 
 logger = logging.getLogger("api")
 
@@ -50,6 +52,17 @@ def whitelist_subject(func):
         except IOError:
             raise falcon.HTTPNotFound()
         else:
+            # First attempt to authenticate client with certificate
+            buf = req.get_header("X-SSL-CERT")
+            if buf:
+                header, _, der_bytes = pem.unarmor(buf.replace("\t", "").encode("ascii"))
+                origin_cert = x509.Certificate.load(der_bytes)
+                if origin_cert.native == cert.native:
+                    click.echo("Subject authenticated using certificates")
+                    return func(self, req, resp, cn, *args, **kwargs)
+
+            # For backwards compatibility check source IP address
+            # TODO: make it disableable
             try:
                 inner_address = getxattr(path, "user.lease.inner_address").decode("ascii")
             except IOError:

certidude/static/views/attributes.html

@@ -1,3 +1,3 @@
 {% for key, value in certificate.attributes %}
-<span class="attribute icon {{ key | replace('.', ' ') }}" title="{{ key }}={{ value }}">{{ value }}</span>
+<span class="badge badge-info" title="{{ key }}={{ value }}">{{ value }}</span>
 {% endfor %}

certidude/static/views/authority.html

@@ -28,7 +28,7 @@ curl -f -L -H "Content-type: application/pkcs10" --data-binary @client_req.pem \
   http://{{ window.location.hostname }}/api/request/?wait=yes > client_cert.pem</code></pre>
             </div>
 
-            <h5>OpenWrt/LEDE</h5>
+            <h5>Vanilla OpenWrt/LEDE</h5>
 
             <p>On OpenWrt/LEDE router to convert it into VPN gateway:</p>
             <div class="highlight">
@@ -45,6 +45,16 @@ curl -f -L -H "Content-type: application/pkcs10" \
   http://{{ window.location.hostname }}/api/request/?wait=yes</code></pre>
             </div>
 
+            {% if session.authority.builder %}
+            <h5>OpenWrt/LEDE image builder</h5>
+            <p>Hit a link to generate machine specific image. Note that this might take couple minutes to finish.</p>
+            <ul>
+            {% for name, title, filename in session.authority.builder.profiles %}
+                <li><a href="/api/build/{{ name }}/{{ filename }}">{{ title }}</a></li>
+            {% endfor %}
+            </ul>
+            {% endif %}
+
             <h5>SCEP</h5>
             <p>Use following as the enrollment URL: http://{{ window.location.hostname }}/cgi-bin/pkiclient.exe</p>
 

certidude/static/views/signed.html

@@ -24,11 +24,17 @@
         Part of {{ certificate.organizational_unit }} organizational unit.
       {% endif %}
     </p>
+    <p>
     {% if session.authority.tagging %}
-      <p class="tags" data-cn="{{ certificate.common_name }}">
+      <span class="tags" data-cn="{{ certificate.common_name }}">
         {% include "views/tags.html" %}
-      </p>
+      </span>
     {% endif %}
+      <span class="attributes" data-cn="{{ certificate.common_name }}">
+        {% include "views/attributes.html" %}
+      </span>
+    </p>
+
     <div class="btn-group">
       <button type="button" class="btn btn-secondary" data-toggle="collapse" data-target="#details-{{ certificate.sha256sum }}"><i class="fa fa-list"></i> Details</button>
       <button type="button" class="btn btn-danger"
@@ -46,8 +52,7 @@
           onclick="javascript:$(this).button('loading');$.ajax({url:'/api/signed/{{certificate.common_name}}/?sha256sum={{ certificate.sha256sum }}&reason=9',type:'delete'});">Revoke due to withdrawn privilege</a>
       </div>
     </div>
-    <div class="collapse" id="details-{{ certificate.sha256sum }}">
+
-      <p>
     <div class="btn-group">
       {% if session.authority.tagging %}
         <button type="button" class="btn btn-default" onclick="onNewTagClicked(this);" data-key="other" data-cn="{{ certificate.common_name }}">
@@ -63,8 +68,8 @@
         </div>
       {% endif %}
     </div>
-      </p>
 
+    <div class="collapse" id="details-{{ certificate.sha256sum }}">
       <p>To fetch certificate:</p>
 
       <div class="bd-example">
@@ -77,7 +82,7 @@ curl http://{{ window.location.hostname }}/api/signed/{{ certificate.common_name
       <pre><code class="language-bash" data-lang="bash">curl http://{{ window.location.hostname }}/api/certificate/ > session.pem
 openssl ocsp -issuer session.pem -CAfile session.pem \
   -url http://{{ window.location.hostname }}/api/ocsp/ \
-  -serial 0x{{ certificate.serial }}</span></code></pre>
+  -serial 0x{{ certificate.serial }}</code></pre>
 
       <p>To fetch script:</p>
       <pre><code class="language-bash" data-lang="bash">cd /var/lib/certidude/{{ window.location.hostname }}/

certidude/static/views/tags.html

@@ -2,5 +2,5 @@
   <span data-cn="{{ certificate.common_name }}"
     title="{{ tag.id }}"
     class="badge badge-default"
-    onClick="onTagClicked(this);">{{ tag.value }}</span>
+    onClick="onTagClicked(this);"><i class="fa fa-{{ tag.key }}"></i> {{ tag.value }}</span>
 {% endfor %}

certidude/templates/server/builder.conf

@@ -0,0 +1,31 @@
+[tpl-archer-c7]
+# Title shown in the UI
+title = TP-Link Archer C7 (Access Point)
+
+# Script to build the image, copy file to /etc/certidude/ and make modifications as necessary
+command = {{ doc_path }}/build-ap.sh
+
+# Path to filesystem overlay, used
+overlay = {{ doc_path }}/overlay
+
+# Site specific script to be copied to /etc/uci-defaults/99-site-script
+script =
+
+# Device/model/profile selection
+model = archer-c7-v2
+
+# File that will be picked from the bin/ folder
+filename = archer-c7-v2-squashfs-factory-eu.bin
+
+# And renamed to make it TFTP-friendly
+rename = ArcherC7v2_tp_recovery.bin
+
+[cf-e380ac]
+title = Comfast E380AC (Access Point)
+command = {{ doc_path }}/build-ap.sh
+overlay = {{ doc_path }}/overlay
+script =
+model = cf-e380ac-v2
+filename = cf-e380ac-v2-squashfs-factory.bin
+rename = firmware_auto.bin
+

certidude/templates/server/server.conf

@@ -198,3 +198,9 @@ default = client, 120,
 srv = server, 365, Server
 gw = server, 3, Gateway
 ap = client, 1825, Access Point
+
+[script]
+# Path to the folder with scripts that can be served to the clients, set none to disable scripting
+path = {{ script_dir }}
+;path = /etc/certidude/script
+;path =

doc/build-ap.sh

@@ -0,0 +1,58 @@
+#!/bin/bash
+
+set -e
+set -x
+umask 022
+
+VERSION=17.01.4
+BASENAME=lede-imagebuilder-$VERSION-ar71xx-generic.Linux-x86_64
+FILENAME=$BASENAME.tar.xz
+URL=http://downloads.lede-project.org/releases/$VERSION/targets/ar71xx/generic/$FILENAME
+
+PACKAGES="luci luci-app-commands \
+    collectd collectd-mod-conntrack collectd-mod-interface \
+    collectd-mod-iwinfo collectd-mod-load collectd-mod-memory \
+    collectd-mod-network collectd-mod-protocols collectd-mod-tcpconns \
+    collectd-mod-uptime \
+    openssl-util openvpn-openssl curl ca-certificates \
+    htop iftop tcpdump nmap nano -odhcp6c -odhcpd -dnsmasq \
+    -luci-app-firewall \
+    -pppd -luci-proto-ppp -kmod-ppp -ppp -ppp-mod-pppoe \
+    -kmod-ip6tables -ip6tables -luci-proto-ipv6 -kmod-iptunnel6 -kmod-ipsec6"
+
+
+if [ ! -e $FILENAME ]; then
+    wget -q $URL
+fi
+
+if [ ! -e $BASENAME ]; then
+    tar xf $FILENAME
+fi
+
+cd $BASENAME
+
+# Copy CA certificate
+AUTHORITY=$(hostname -f)
+CERTIDUDE_DIR=/var/lib/certidude/$AUTHORITY
+if [ -d "$CERTIDUDE_DIR" ]; then
+    mkdir -p overlay/$CERTIDUDE_DIR
+    cp $CERTIDUDE_DIR/ca_cert.pem overlay/$CERTIDUDE_DIR
+fi
+
+cat < EOF > overlay/etc/config/certidude
+
+config authority
+    option url http://$AUTHORITY
+    option authority_path /var/lib/certidude/$AUTHORITY/ca_cert.pem
+    option request_path /var/lib/certidude/$AUTHORITY/client_req.pem
+    option certificate_path /var/lib/certidude/$AUTHORITY/client_cert.pem
+    option key_path /var/lib/certidude/$AUTHORITY/client_key.pem
+    option key_type rsa
+    option key_length 1024
+    option red_led gl-connect:red:wlan
+    option green_led gl-connect:green:lan
+
+EOF
+
+make image FILES=../overlay/ PACKAGES="$PACKAGES" PROFILE="$PROFILE"
+

doc/overlay/etc/profile

@@ -0,0 +1,32 @@
+#!/bin/sh
+[ -f /etc/banner ] && cat /etc/banner
+[ -e /tmp/.failsafe ] && cat /etc/banner.failsafe
+
+export PATH=/usr/bin:/usr/sbin:/bin:/sbin
+export HOME=$(grep -e "^${USER:-root}:" /etc/passwd | cut -d ":" -f 6)
+export HOME=${HOME:-/root}
+export PS1='\u@\h:\w\$ '
+
+[ -z "$KSH_VERSION" -o \! -s /etc/mkshrc ] || . /etc/mkshrc
+[ -x /bin/more ] || alias more=less
+[ -x /usr/bin/vim ] && alias vi=vim || alias vim=vi
+[ -x /usr/bin/arp ] || arp() { cat /proc/net/arp; }
+[ -x /usr/bin/ldd ] || ldd() { LD_TRACE_LOADED_OBJECTS=1 $*; }
+
+HOSTNAME=$(uci get system.@system[0].hostname)
+DOMAIN=$(uci -q get dhcp.@dnsmasq[0].domain)
+
+if [ $? -eq 0 ]; then
+    FQDN=$HOSTNAME.$DOMAIN
+else
+    FQDN=$HOSTNAME
+fi
+
+export PS1='\[\033[01;31m\]$FQDN\[\033[01;34m\] \W #\[\033[00m\] '
+case "$TERM" in
+    xterm*|rxvt*)
+        echo -ne "\033]0;${USER}@${FQDN}:${PWD}\007"
+    ;;
+    *)
+    ;;
+esac

doc/overlay/etc/uci-defaults/40-hostname

@@ -0,0 +1,21 @@
+MODEL=$(cat /etc/board.json | jsonfilter -e '@["model"]["id"]')
+
+# Hostname prefix
+case $MODEL in
+    tl-*|archer-*)  VENDOR=tplink ;;
+    cf-*) VENDOR=comfast ;;
+    *) VENDOR=ap ;;
+esac
+
+# Network interface with relevant MAC address
+case $MODEL in
+    tl-wdr*) NIC=wlan1 ;;
+    archer-*)  NIC=eth1 ;;
+    cf-e380ac-v2) NIC=eth0 ;;
+    *) NIC=wlan0 ;;
+esac
+
+HOSTNAME=$VENDOR-$(cat /sys/class/net/$NIC/address | cut -d : -f 4- | sed -e 's/://g')
+uci set system.@system[0].hostname=$HOSTNAME
+uci set network.lan.hostname=$HOSTNAME
+

doc/overlay/etc/uci-defaults/50-access-point

@@ -0,0 +1,66 @@
+# Disable DHCP servers
+/etc/init.d/odhcpd disable
+/etc/init.d/dnsmasq disable
+
+# Remove firewall rules since AP bridges ethernet to wireless anyway
+uci delete firewall.@zone[1]
+uci delete firewall.@zone[0]
+uci delete firewall.@forwarding[0]
+for j in $(seq 0 10); do uci delete firewall.@rule[0]; done
+
+# Remove WAN interface
+uci delete network.wan
+uci delete network.wan6
+
+# Reconfigure DHCP client for bridge over LAN and WAN ports
+uci delete network.lan.ipaddr
+uci delete network.lan.netmask
+uci delete network.lan.ip6assign
+uci delete network.globals.ula_prefix
+uci delete network.@switch_vlan[1]
+uci delete dhcp.@dnsmasq[0].domain
+uci set network.lan.proto=dhcp
+uci set network.lan.ipv6=0
+uci set network.lan.ifname='eth0'
+uci set network.lan.stp=1
+
+# Radio ordering differs among models
+case $(uci get wireless.radio0.hwmode) in
+    11a) uci rename wireless.radio0=radio5ghz;;
+    11g) uci rename wireless.radio0=radio2ghz;;
+esac
+case $(uci get wireless.radio1.hwmode) in
+    11a) uci rename wireless.radio1=radio5ghz;;
+    11g) uci rename wireless.radio1=radio2ghz;;
+esac
+
+# Reset virtual SSID-s
+uci delete wireless.@wifi-iface[1]
+uci delete wireless.@wifi-iface[0]
+
+# Pseudorandomize channel selection, should work with 80MHz on 5GHz band
+case $(uci get system.@system[0].hostname | md5sum) in
+   1*|2*|3*|4*) uci set wireless.radio2ghz.channel=1; uci set wireless.radio5ghz.channel=36 ;;
+   5*|6*|7*|8*) uci set wireless.radio2ghz.channel=5; uci set wireless.radio5ghz.channel=52 ;;
+   9*|0*|a*|b*) uci set wireless.radio2ghz.channel=9; uci set wireless.radio5ghz.channel=100 ;;
+   c*|d*|e*|f*) uci set wireless.radio2ghz.channel=13; uci set wireless.radio5ghz.channel=132 ;;
+esac
+
+# Create bridge for guests
+uci set network.guest=interface
+uci set network.guest.proto='static'
+uci set network.guest.address='0.0.0.0'
+uci set network.guest.type='bridge'
+uci set network.guest.ifname='eth0.156' # tag id 156 for guest network
+uci set network.guest.ipaddr='0.0.0.0'
+uci set network.guest.ipv6=0
+uci set network.guest.stp=1
+
+# Disable switch tagging and bridge all ports on TP-Link WDR3600/WDR4300
+case $(cat /etc/board.json | jsonfilter -e '@["model"]["id"]') in
+    tl-wdr*)
+        uci set network.@switch[0].enable_vlan=0
+        uci set network.@switch_vlan[0].ports='0 1 2 3 4 5 6'
+    ;;
+    *) ;;
+esac