About to write dhcp-hosts

main.py

@@ -3,7 +3,7 @@
 from flask import Flask, request, abort, make_response, \
                   render_template, redirect, url_for, \
                   json, jsonify, session, flash
-from collections import namedtuple
+from collections import namedtuple, OrderedDict
 from subprocess import check_call, call
 from fcntl import flock, LOCK_EX, LOCK_SH, LOCK_UN
 
@@ -74,7 +74,6 @@ def create_user(username, password, creator):
     reload_freeradius()
 
 def login_required(f):
-    print(f)
     def g(*args, **kwargs):
         if not session.get('logged_in', False):
             return redirect(url_for('login', redirect_to=request.url))
@@ -292,6 +291,44 @@ def ips():
     ipmap = load_ips()
     return render_template("ips.html", ipmap=ipmap)
 
+def parse_macs(macs):
+    r = []
+    macs = macs.strip()
+    parts = macs.split(',')
+    for p in parts:
+        p = p.strip()
+        m = mac_re.match(p)
+        if m:
+            r.append(m.group(0))
+    return r
+
+def write_dhcp_files(ipmap):
+    tempfile = "{}.{}".format(dhcp_hosts_file, timestamp)
+    f = open(tempfile,"w")
+    prefix = ipmap["prefix"]
+    for i in range(1,255):
+        ip = ipmap[i]
+        if ip.dhcp_pool:
+            continue
+        if ip.reserved_by or ip.locked:
+            meta = OrderedDict()
+            if ip.reserved_by:
+                meta['reserved-by'] = ip.reserved_by
+            if ip.locked:
+                meta['locked'] = True
+            print("# " + json.dumps(meta))
+        if len(ip.macs) == 0:
+            macs = impossible_mac
+        else:
+            macs = ",".join(ip.macs)
+        tag = ""
+        if ip.gw and len(ip.macs) > 0:
+            tag = ",set:client" + ip.macs[0].replace(":","").lower()
+        print("{},{}.{}{}".format(macs,prefix,i,tag))
+    f.close()
+    shutil.move(tempfile, dhcp_hosts_file)
+
+
 @app.route("/ip/<int:last_byte>", methods=['GET', 'POST'])
 @login_required
 def ip(last_byte):
@@ -302,17 +339,37 @@ def ip(last_byte):
         #                     ('dhcp', 'on'),
         #                     ('dhcp-client-mac', '00:23:54:8c:65:13'),
         #                     ('dhcp-client-mac', '10.6.122.2')])
-        # ImmutableMultiDict([('dhcp-client', 'any'), ('dhcp', 'on')])
+        # ImmutableMultiDict([('dhcp-client', 'pool'), ('dhcp', 'on')])
         # ImmutableMultiDict([('reserved', 'on'), ('reserved-by', 'Andy')])
         print(request.form)
+
+        reserved_by = request.form.get('reserved-by', '')[:100]
+        dhcp_pool = request.form.get('dhcp-client', '') == 'pool'
+        macs = parse_macs(request.form.get('dhcp-client-mac', ''))
+        gw = request.form.get('dhcp-gw','')[:15]
+        gw = gw if ip_re.match(gw) else ''
+
+        with exclusive_lock:
+            ipmap = load_ips()
+            if not ipmap[last_byte].locked:
+                ipmap[last_byte] = Ip(
+                    reserved_by=reserved_by,
+                    dhcp_pool=dhcp_pool,
+                    locked=False,
+                    macs=macs,
+                    gw=gw,
+                )
+                write_dhcp_files(ipmap)
+
         return redirect(url_for('ips'))
-    ipmap = load_ips()
+    else:
-    addr = "{}.{}".format(ipmap["prefix"], last_byte)
+        ipmap = load_ips()
-    return render_template(
+        addr = "{}.{}".format(ipmap["prefix"], last_byte)
-            "ip.html",
+        return render_template(
-            addr=addr,
+                "ip.html",
-            meta=ipmap[last_byte],
+                addr=addr,
-    )
+                meta=ipmap[last_byte],
+        )
 
 @app.route("/logout")
 def logout():

templates/ip.html

@@ -48,9 +48,9 @@
    <fieldset id="dhcp-fieldset" disabled>
    <div class="form-group">
      <div class="col-sm-offset-1">
-       <input type="radio" id="dhcp-client-any" name="dhcp-client" value="any"
+       <input type="radio" id="dhcp-client-pool" name="dhcp-client" value="pool"
         {% if meta.dhcp_pool %}checked="checked"{% endif %}/>
-       <label for="dhcp-client-any">A cualquier dispositivo</label>
+       <label for="dhcp-client-pool">A cualquier dispositivo</label>
      </div>
    </div>
    <div class="form-group">

templates/ips.html

@@ -7,6 +7,15 @@
 
 {% block content %}
 
+<div class="row">
+    <h3>Asignaciones de IPs</h3>
+</div>
+<div class="row" style="padding-bottom: 1em;">
+    <b>Red:</b> <span>10.6.122.0/24</span>
+    <b>Gateway:</b> <span>10.6.122.1</span>
+    <b>DNS:</b> <span>10.6.100.66, 10.6.100.67</span>
+</div>
+
 <div class="row">
     {% for row in range(16) %}
       <div class="ips-row">
@@ -48,6 +57,8 @@
     {% endfor %}
 </div>
 
+<div class="row" style="padding-bottom: 3em; padding-top: 1em;"><a href="{{ url_for('admin') }}">Regresar</a></div>
+
 <script>
     $(function() {
         $(".ips-cell:not(.unusable)").hover(