FreeBSDでSIPサーバ(メモ)

FreeBSDでSIPサーバ

利用しているOS は FreeBSD 5.1-RELEASE

構築方法

認証付きの登録サーバとして設定します。
ユーザ管理にMySQLを利用するので、あらかじめインストールしておいてください。

ports に用意されている SIP Express Router (ser) を利用します。　( この時点でのバージョンは 0.8.11 でした)

% su
# cd /usr/ports/net/ser
# make install && make clean

IPアドレスから逆引きできないドメインを利用している場合は、 /usr/local/etc/ser/ser.cfg の適当な場所に以下を追加しておきます。

# additional domain name
alias="mydomain.dyndns.org"

MySQLアクセス用のserユーザを作成。

> mysql -p -uroot mysql
mysql> GRANT ALL PRIVILEGES ON *.* TO ser@localhost IDENTIFIED BY 'password';
mysql> FLUSH PRIVILEGES;
mysql> exit

/usr/local/etc/ser/ser.cfg にてMySQlを利用するユーザ名を指定します。

# Uncomment this if you want to use SQL database
# for persistent storage and comment the previous line
modparam("usrloc", "db_mode", 2)
modparam("usrloc", "db_url","sql://ser:password@localhost/ser")

/usr/local/etc/ser/ser.cfg の認証ドメインを変更しておきます。

# Uncomment this if you want to use digest authentication
                        if (!www_authorize("mydomain.dyndns.org", "subscriber")) {
                                www_challenge(""mydomain.dyndns.org", "0");
                                break;
                        };

実際にアクセスするユーザを登録します。

$ export SIP_DOMAIN=mydomain.dyndns.org
$ serctl add username userpass username@mydomain.dyndns.org
MySql password:password
new user added
$

これで、設定は完了です。
rootになって、

# csh
# setenv SIP_DOMAIN mydomain.dyndns.org
# serctl start

で、起動できます。

参考として編集後のser.cfg を載せておきます。

#
# $Id: ser.cfg,v 1.21.2.1 2003/07/30 16:46:18 andrei Exp $
#
# simple quick-start config script
#

alias="mydomain.dyndns.org"

# ----------- global configuration parameters ------------------------

#debug=3         # debug level (cmd line: -dddddddddd)
#fork=yes
#log_stderror=no        # (cmd line: -E)

/* Uncomment these lines to enter debugging mode
debug=7
fork=no
log_stderror=yes
*/

check_via=no    # (cmd. line: -v)
dns=no           # (cmd. line: -r)
rev_dns=no      # (cmd. line: -R)
#port=5060
#children=4
fifo="/tmp/ser_fifo"

# ------------------ module loading ----------------------------------

# Uncomment this if you want to use SQL database
loadmodule "/usr/local/lib/ser/modules/mysql.so"

loadmodule "/usr/local/lib/ser/modules/sl.so"
loadmodule "/usr/local/lib/ser/modules/tm.so"
loadmodule "/usr/local/lib/ser/modules/rr.so"
loadmodule "/usr/local/lib/ser/modules/maxfwd.so"
loadmodule "/usr/local/lib/ser/modules/usrloc.so"
loadmodule "/usr/local/lib/ser/modules/registrar.so"

# Uncomment this if you want digest authentication
# mysql.so must be loaded !
loadmodule "/usr/local/lib/ser/modules/auth.so"
loadmodule "/usr/local/lib/ser/modules/auth_db.so"

# ----------------- setting module-specific parameters ---------------

# -- usrloc params --

modparam("usrloc", "db_mode",   0)

# Uncomment this if you want to use SQL database
# for persistent storage and comment the previous line
modparam("usrloc", "db_mode", 2)
modparam("usrloc", "db_url","sql://ser:password@localhost/ser")

# -- auth params --
# Uncomment if you are using auth module
#
modparam("auth_db", "calculate_ha1", yes)
#
# If you set "calculate_ha1" parameter to yes (which true in this config),
# uncomment also the following parameter)
#
modparam("auth_db", "password_column", "password")

# -- rr params --
# add value to ;lr param to make some broken UAs happy
modparam("rr", "enable_full_lr", 1)


# -------------------------  request routing logic -------------------

# main routing logic

route{

        # initial sanity checks -- messages with
        # max_forwards==0, or excessively long requests
        if (!mf_process_maxfwd_header("10")) {
                sl_send_reply("483","Too Many Hops");
                break;
        };
        if (len_gt( max_len )) {
                sl_send_reply("513", "Message too big");
                break;
        };

        # we record-route all messages -- to make sure that
        # subsequent messages will go through our proxy; that's
        # particularly good if upstream and downstream entities
        # use different transport protocol
        record_route();
        # loose-route processing
        if (loose_route()) {
                t_relay();
                break;
        };

        # if the request is for other domain use UsrLoc
        # (in case, it does not work, use the following command
        # with proper names and addresses in it)
        if (uri==myself) {

                if (method=="REGISTER") {

# Uncomment this if you want to use digest authentication
                        if (!www_authorize("mydomain.dyndns.org", "subscriber"
)) {
                                www_challenge("mydomain.dyndns.org", "0");
                                break;
                        };

                        save("location");
                        break;
                };

                # native SIP destinations are handled using our USRLOC DB
                if (!lookup("location")) {
                        sl_send_reply("404", "Not Found");
                        break;
                };
        };
        # forward to current uri now; use stateful forwarding; that
        # works reliably even if we forward from TCP to UDP
        if (!t_relay()) {
                sl_reply_error();
        };

}