/[baselayout]/trunk/net.Linux/pppd.sh
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Revision 2547 - (hide annotations) (download) (as text)
Thu Apr 5 11:18:42 2007 UTC (7 years, 5 months ago) by uberlord
File MIME type: text/x-sh
File size: 5587 byte(s)
    Rewrite the core parts in C. We now provide librc so other programs can
    query runlevels, services and state without using bash. We also provide
    libeinfo so other programs can easily use our informational functions.

    As such, we have dropped the requirement of using bash as the init script
    shell. We now use /bin/sh and have strived to make the scripts as portable
    as possible. Shells that work are bash and dash. busybox works provided
    you disable s-s-d. If you have WIPE_TMP set to yes in conf.d/bootmisc you
    should disable find too.
    zsh and ksh do not work at this time.

    Networking support is currently being re-vamped also as it was heavily bash
    array based. As such, a new config format is available like so
    config_eth0="1.2.3.4/24 5.6.7.8/16"
    or like so
    config_eth0="'1.2.3.4 netmask 255.255.255.0' '5.6.7.8 netmask 255.255.0.0'"

    We will still support the old bash array format provided that /bin/sh IS
    a link it bash.

    ChangeLog for baselayout-1 can be found in our SVN repo.
1 uberlord 2547 # Copyright 2005-2007 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3    
4     pppd_depend() {
5     program /usr/sbin/pppd
6     after interface
7     before dhcp
8     provide ppp
9     }
10    
11     is_ppp() {
12     [ -e /var/run/ppp-"${IFACE}".pid ]
13     }
14    
15     requote() {
16     printf "'%s' " "$@"
17     }
18    
19     pppd_start() {
20     ${IN_BACKGROUND} && return 0
21    
22     if [ "${iface%%[0-9]*}" != "ppp" ] ; then
23     eerror "PPP can only be invoked from net.ppp[0-9]"
24     return 1
25     fi
26    
27     local link= i= opts= unit="${IFACE#ppp}" mtu=
28     if [ -z "${unit}" ] ; then
29     eerror $"PPP requires a unit - use net.ppp[0-9] instead of net.ppp"
30     return 1
31     fi
32    
33     # PPP requires a link to communicate over - normally a serial port
34     # PPPoE communicates over Ethernet
35     # PPPoA communicates over ATM
36     # In all cases, the link needs to be available before we start PPP
37     eval link=\$link_${IFVAR}
38     if [ -z "${link}" ] ; then
39     eerror "link_${IFVAR} has not been set in /etc/conf.d/net"
40     return 1
41     fi
42    
43     case "${link}" in
44     /*)
45     if [ ! -e "${link}" ] ; then
46     eerror "${link} does not exist"
47     eerror "Please verify hardware or kernel module (driver)"
48     return 1
49     fi
50     ;;
51     esac
52    
53     eval $(_get_array "pppd_${IFVAR}")
54     opts="$@"
55    
56     # We don't work with these options set by the user
57     for i in "$@" ; do
58     set -- ${i}
59     case "$1" in
60     unit|nodetach|linkname)
61     eerror "The option \"$1\" is not allowed in pppd_${IFVAR}"
62     return 1
63     ;;
64     esac
65     done
66    
67     # Might be set in conf.d/net
68     local username= password= passwordset=
69     eval username=\$username_${IFVAR}
70     eval password=\$password_${IFVAR}
71     eval passwordset=\${password_${IFVAR}-x}
72     if [ -n "${username}" ] \
73     && [ -n "${password}" -o -z "${passwordset}" ] ; then
74     opts="${opts} plugin passwordfd.so passwordfd 0"
75     fi
76    
77     # Check for mtu/mru
78     local mtu= hasmtu=false hasmru=false hasmaxfail=false haspersits=false
79     loal hasupdetach=false
80     eval mtu=\$mtu_${IFVAR}
81     for i in ${opts} ; do
82     case "${i}" in
83     mtu" "*) hasmtu=true ;;
84     mru" "*) hasmru=true ;;
85     maxfail" "*) hasmaxfail=true ;;
86     persist) haspersist=true ;;
87     updetach) hasupdetach=true;
88     esac
89     done
90     ! ${hasmtu} && opts="${opts} mtu ${mtu}"
91     ! ${hasmru} && opts="${opts} mru ${mtu}"
92     ! ${hasmailfail} && opts="${opts} maxfail 0"
93     ! ${haspersist} && opts="${opts} persist"
94    
95     # Set linkname because we need /var/run/ppp-${linkname}.pid
96     # This pidfile has the advantage of being there, even if ${iface} interface was never started
97     opts="linkname ${IFACE} ${opts}"
98    
99     # Setup auth info
100     if [ -n "${username}" ] ; then
101     opts="user '"${username}"' remotename ${IFACE} ${opts}"
102     fi
103    
104     # Load a custom interface configuration file if it exists
105     [ -f "/etc/ppp/options.${IFACE}" ] \
106     && opts="${opts} file /etc/ppp/options.${IFACE}"
107    
108     # Set unit
109     opts="unit ${unit} ${opts}"
110    
111     # Setup connect script
112     local chatopts="/usr/sbin/chat -e -E -v"
113     eval $(_get_array "phone_number_${IFVAR}")
114     [ -n "$1" ] && chatopts="${chatopts} -T '$1'"
115     [ -n "$2" ] && chatopts="${chatopts} -U '$2'"
116     eval $(_get_array "chat_${IFVAR}")
117     if [ -n "$@" ] ; then
118     opts="${opts} connect $(printf "'%s' " "${chatopts} $(printf "'%s' " "$@")")"
119     fi
120    
121     # Add plugins
122     local haspppoa=false haspppoe=false
123     eval $(_get_array "plugins_${IFVAR}")
124     for i in "$@" ; do
125     set -- ${i}
126     case "${i}" in
127     passwordfd) continue;;
128     pppoa) shift; set -- "rp-pppoe" "$@" ;;
129     pppoe) shift; set -- "pppoatm" "$@" ;;
130     capi) shift; set -- "capiplugin" "$@" ;;
131     esac
132     case "${i}" in
133     rp-pppoe) haspppoe=true ;;
134     pppoatm) haspppoa=true ;;
135     esac
136     if [ "$1" = "rp-pppoe" ] || [ "$1" = "pppoatm" -a "${link}" != "/dev/null" ] ; then
137     opts="${opts} connect true"
138     set -- "$@" "${link}"
139     fi
140     opts="${opts} plugin $1.so"
141     shift
142     opts="${opts} $@"
143     done
144    
145     #Specialized stuff. Insert here actions particular to connection type (pppoe,pppoa,capi)
146     local insert_link_in_opts=1
147     if ${haspppoe} ; then
148     if [ ! -e /proc/net/pppoe ] ; then
149     # Load the PPPoE kernel module
150     if ! modprobe pppoe ; then
151     eerror "kernel does not support PPPoE"
152     return 1
153     fi
154     fi
155    
156     # Ensure that the link exists and is up
157     ( IFACE="${link}" ; _exists true && _up ) || return 1
158     insert_link_in_opts=0
159     fi
160    
161     if ${haspppoa} ; then
162     if [ ! -d /proc/net/atm ] ; then
163     # Load the PPPoA kernel module
164     if ! modprobe pppoatm ; then
165     eerror "kernel does not support PPPoATM"
166     return 1
167     fi
168     fi
169    
170     if [ "${link}" != "/dev/null" ] ; then
171     insert_link_in_opts=0
172     else
173     ewarn "WARNING: An [itf.]vpi.vci ATM address was expected in link_${IFVAR}"
174     fi
175    
176     fi
177     [ "${insert_link_in_opts}" == "0" ] || opts="${link} ${opts}"
178    
179     ebegin "Starting pppd in ${IFACE}"
180     mark_service_inactive "${SVCNAME}"
181     if [ -n "${username}" ] \
182     && [ -n "${password}" -o -z "${passwordset}" ] ; then
183     echo "${password}" | sed -e 's/\\/\\\\/g' -e 's/"/\\"/g' | \
184     eval start-stop-daemon --start --exec /usr/sbin/pppd \
185     --pidfile "/var/run/ppp-${IFACE}.pid" -- "${opts}" >/dev/null
186     else
187     eval start-stop-daemon --start --exec /usr/sbin/pppd \
188     --pidfile "/var/run/ppp-${IFACE}.pid" -- "${opts}" >/dev/null
189     fi
190    
191     if ! eend $? $"Failed to start PPP" ; then
192     mark_service_starting "net.${iface}"
193     return 1
194     fi
195    
196     if ${hasupdetach} ; then
197     _show_address
198     else
199     einfo "Backgrounding ..."
200     fi
201    
202     # pppd will re-call us when we bring the interface up
203     exit 0
204     }
205    
206     pppd_stop() {
207     ${IN_BACKGROUND} && return 0
208     local pidfile="/var/run/ppp-${IFACE}.pid"
209    
210     [ ! -s "${pidfile}" ] && return 0
211    
212     # Give pppd at least 30 seconds do die, #147490
213     einfo "Stopping pppd on ${IFACE}"
214     start-stop-daemon --stop --quiet --exec /usr/sbin/pppd \
215     --pidfile "${pidfile}" --retry 30
216     eend $?
217     }
218    
219     # vim: set ts=4 :

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