Configuring OpenWrt Network
The network configuration in Kamikaze is stored in /etc/config/network and is divided into interface configurations. Each interface configuration either refers directly to an ethernet/wifi interface (eth0, wl0, ..) or to a bridge containing multiple interfaces. It looks like this:

config interface     "lan" 
      option ifname    "eth0" 
      option proto     "static" 
      option ipaddr    "192.168.1.1" 
      option netmask   "255.255.255.0" 
      option gateway   "192.168.1.254" 
      option dns       "192.168.1.254"

ifname specifies the Linux interface name. If you want to use bridging on one or more interfaces, set ifname to a list of interfaces and add:

option type     "bridge"

It is possible to use VLAN tagging on an interface simply by adding the VLAN IDs to it, e.g. eth0.1. These can be nested as well.

This sets up a simple static configuration for eth0. proto specifies the protocol used for the interface. The default image usually provides ’none’ ’static’, ’dhcp’ and ’pppoe’. Others can be added by installing additional packages.

When using the ’static’ method like in the example, the options ipaddr and netmask are mandatory, while gateway and dns are optional. You can specify more than one DNS server, separated with spaces.

DHCP currently only accepts ipaddr (IP address to request from the server) and hostname (client hostname identify as) - both are optional.
PPP based protocols (pppoe, pptp, ...) accept these options:

• username: The PPP username (usually with PAP authentication)
• password: The PPP password
• keepalive: Ping the PPP server (using LCP). The value of this option specifies the maximum number of failed pings before reconnecting. The ping interval defaults to 5, but can be changed by appending "," to the keepalive value
• demand: Use Dial on Demand (value specifies the maximum idle time.
• server(pptp): The remote pptp server IP

For all protocol types, you can also specify the MTU by using the mtu option.

Setting up static routes
You can set up static routes for a specific interface that will be brought up after the interface is configured.
Simply add a config section like this:

  config route foo 
   option interface lan 
   option target 1.1.1.0 
   option netmask 255.255.255.0 
   option gateway 192.168.1.1

The name for the route section is optional, the interface, target and gateway options are mandatory. Leaving out the netmask option will turn the route into a host route.

Setting up the switch (currently broadcom only)
The switch configuration is set by adding a ’switch’ config section. Example:

  config switch       "eth0" 
      option vlan0    "1 2 3 4 5*" 
      option vlan1    "0 5"

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OpenWrt source repository downloads

You can either check out the OpenWrt source code via git or svn.
GIT
The recommended way of checking out the OpenWrt source code is cloning the Git repository using one of the following commands:
trunk (main development tree)

• Main repository

  git clone git://git.openwrt.org/openwrt.git

14.07 branch (Barrier Breaker)

• Main repository

  git clone git://git.openwrt.org/14.07/openwrt.git

12.09 branch (Attitude Adjustment)

• Main repository

  git clone git://git.openwrt.org/12.09/openwrt.git

• Packages feed

  git clone git://git.openwrt.org/12.09/packages.git

SVN
You can checkout the source from the OpenWrt Subversion repository using one of the following commands:

• Development branch:

  svn co svn://svn.openwrt.org/openwrt/trunk/

• Barrier Breaker 14.07 branch:

  svn co svn://svn.openwrt.org/openwrt/branches/barrier_breaker

• Attitude Adjustment 12.09 branch:

  svn co svn://svn.openwrt.org/openwrt/branches/attitude_adjustment

• Backfire 10.03 branch:

  svn co svn://svn.openwrt.org/openwrt/branches/backfire

• Kamikaze 8.09 branch:

  svn co svn://svn.openwrt.org/openwrt/branches/8.09

• Kamikaze 7.09 branch:

  svn co svn://svn.openwrt.org/openwrt/tags/kamikaze_7.09

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Auth server (Current)

• Node-specific content features. Wifidog-auth has a very cool local content architecture.
  RSS feed support (optional, with magpierss), one feed per node (url stored in the database, works great, but no gui to edit it yet) and one network-wide RSS feed.
• Configuration and integration
  No need to set any path in the web server config files
  All paths are editable from the config file
  Quick setup: the network name, url, default RSS, and similar data are set from the config file, and will be displayed as needed throughout the system.
  Can import all users and passwords from a NoCat password file [WWW] More info].
• Development
  Demo page to let people to hack on it more easily
  Database abstraction layer with very nice debugging features (just append true at the end of the call and you'll see the query, the results, the query plan, and the number of affected rows. Porting to another database only requires porting one file. Currently uses Postgres.)
• User management (end user)
  Users can create and activate accounts without admin intervention. The user will be granted a 15 minute grace period after signing up in order to retrieve and validate his email.
  Users can request that the server re-send the validation email
  Users can change their passwords
  Users who forget their username can have it mailed to them.
  Users who lose their password can ask the system to generate a new one and mail it to them.
  Email must be valid but isn't displayed in order to preserve user privacy.
  Users can login using either email or username
  Enforces (politely) that duplicate email addresses are not allowed in the database
• Logging and monitoring
  MAC address logging (in case it is a legal requirement in your country)
  Sends the original url before redirecting to the central server in order to allow linking on the portal page
  Multi-language support
  Script and sql execution time breakdown. Already implemented, just needs to be packaged to be usable by the templates.
• Reports and Statistics

Gateway (Current)

• Supports using backup auth servers if the primary one doesn't respond.
• Runtime query interface
• One rule to jump in, one to jump out rejects, one to jump out accepts
• Detects the IP address of a network interface automatically, instead of specifying it separately in the configuration file.

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Wifidog was designed as a replacement to existing captive portal solutions which we felt didn't fit the needs of next generation community groups. Specifically, we wanted both personalized and community wide content for each hotspot, no pop ups, no client software and centralized management. Mainly as a replacement for portals currently using NoCat. A lot of other vendors use WiFiDog (especially the client) as a base for their solutions.

Main Features

• Captive portal which lets hotspot owners communicate with their users
• Wifidog gateway was designed for and runs on GNU/Linux servers and embedded linux devices, e.g. Linksys WRT54G with OpenWRT. For a current list of supported devices and installation instructions please click Here.
• Multilingual support (through browser detection and user selection) with the ability to add more languages using a .po editor.Current implemented languages are:
  English
  French
  German
  Spanish
  Italian
  Greek
  Portuguese (also Brazilian)
  Swedish
  Bulgarian
  Japanese
  Catalan
• Maintain the client (hotspot users) connection by checking network activity through a ping command, instead of a javascript window (like used in NoCat). This allows PDAs and cellphones and other devices without javascript support to connect.
• Support for differing types of hotspots:
  Splash Only mode: Users are redirected to the portal, but do not have to login in order to use services
  Normal Mode: Users are unique and must have a valid email address in order to open an account.
• Users are able to create a working account directly from any hotspot. New users sign on from any hotspot, create their account and are granted access for 15 minutes to confirm an email. If they don't, they are disconnected and have to sign up again.
• Hotspot/node monitoring by two way heart beating, so the central server always knows which hotspots/nodes are up, regardless of dynamic DNS, firewalls, etc.
• Reports and Statistics including:
  10 highest bandwidth consumers
  10 most frequent users
  10 most mobile users
  Anoymised SQL data export (for academic research)
  Breakdown of how many users actually use the network
  Connection log
  Content display and click through report
  Graph on network use (per hour, weekday and month)
  Individual user report, most popular nodes (by visit)
  Network status information
  Node status information
  Registration log
  User registration report
• Automatic node creation (if the person creating the node has the relevant permissions and the feature is enabled).

引用自：http://dev.wifidog.org/wiki/Features

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