Annotation of embedaddon/strongswan/testing/scripts/function.sh, revision 1.1.1.1
1.1 misho 1: #!/bin/bash
2: # provides some general-purpose script functions
3: #
4: # Copyright (C) 2004 Eric Marchionni, Patrik Rayo
5: # Zuercher Hochschule Winterthur
6: #
7: # This program is free software; you can redistribute it and/or modify it
8: # under the terms of the GNU General Public License as published by the
9: # Free Software Foundation; either version 2 of the License, or (at your
10: # option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
11: #
12: # This program is distributed in the hope that it will be useful, but
13: # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14: # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15: # for more details.
16:
17: export TERM=xterm
18: RED=$(tput setaf 1)
19: GREEN=$(tput setaf 2)
20: YELLOW=$(tput setaf 3)
21: NORMAL=$(tput op)
22:
23: # exit with given error message
24: # $1 - error message
25: die() {
26: echo -e "${RED}$1${NORMAL}"
27: exit 1
28: }
29:
30: # execute command
31: # $1 - command to execute
32: # $2 - whether or not to log command exit status
33: # (0 -> disable exit status logging)
34: execute()
35: {
36: cmd=${1}
37: echo $cmd >>$LOGFILE 2>&1
38: $cmd >>$LOGFILE 2>&1
39: status=$?
40: [ "$2" != 0 ] && log_status $status
41: if [ $status != 0 ]; then
42: echo
43: echo "! Command $cmd failed, exiting (status $status)"
44: echo "! Check why here $LOGFILE"
45: exit 1
46: fi
47: }
48:
49: # execute command in chroot
50: # $1 - command to execute
51: execute_chroot()
52: {
53: execute "chroot $LOOPDIR env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin $@"
54: }
55:
56: # write green status message to console
57: # $1 - msg
58: echo_ok()
59: {
60: echo -e "${GREEN}$1${NORMAL}"
61: }
62:
63: # write red status message to console
64: # $1 - msg
65: echo_failed()
66: {
67: echo -e "${RED}$1${NORMAL}"
68: }
69:
70: # write yellow status message to console
71: # $1 - msg
72: echo_warn()
73: {
74: echo -e "${YELLOW}$1${NORMAL}"
75: }
76:
77: # log an action
78: # $1 - current action description
79: log_action()
80: {
81: /bin/echo -n "[....] $1 "
82: }
83:
84: # log an action status
85: # $1 - exit status of action
86: log_status()
87: {
88: tput hpa 0
89: if [ $1 -eq 0 ]; then
90: /bin/echo -ne "[${GREEN} ok ${NORMAL}"
91: else
92: /bin/echo -ne "[${RED}FAIL${NORMAL}"
93: fi
94: echo
95: }
96:
97: # the following two functions are stolen from [1]
98: # [1] - http://www.linuxjournal.com/content/use-bash-trap-statement-cleanup-temporary-files
99:
100: declare -a on_exit_items
101:
102: # perform registered actions on exit
103: on_exit()
104: {
105: for ((onex=${#on_exit_items[@]}-1; onex>=0; onex--))
106: do
107: echo "On_Exit: ${on_exit_items[$onex]}" >>$LOGFILE
108: ${on_exit_items[$onex]} >>$LOGFILE 2>&1
109: done
110: on_exit_items=""
111: trap - EXIT
112: }
113:
114: # register a command to execute when the calling script terminates. The
115: # registered commands are called in FILO order.
116: # $* - command to register
117: do_on_exit()
118: {
119: local n=${#on_exit_items[*]}
120: on_exit_items[$n]="$*"
121: if [ $n -eq 0 ]; then
122: trap on_exit EXIT
123: fi
124: }
125:
126: # wait for a mount to disappear
127: # $1 - device/image to wait for
128: # $2 - maximum time to wait in seconds, default is 5 seconds
129: graceful_umount()
130: {
131: secs=$2
132: [ ! $secs ] && secs=5
133:
134: let steps=$secs*100
135: for st in `seq 1 $steps`
136: do
137: umount $1 >>$LOGFILE 2>&1
138: mount | grep $1 >/dev/null 2>&1
139: [ $? -eq 0 ] || return 0
140: sleep 0.01
141: done
142:
143: return 1
144: }
145:
146: # load qemu NBD kernel module, if not already loaded
147: load_qemu_nbd()
148: {
149: lsmod | grep ^nbd[[:space:]]* >/dev/null 2>&1
150: if [ $? != 0 ]
151: then
152: log_action "Loading NBD kernel module"
153: execute "modprobe nbd max_part=16"
154: fi
155: }
156:
157: # check if given commands exist in $PATH
158: # $* - commands to check
159: check_commands()
160: {
161: for i in $*
162: do
163: command -v $i >/dev/null || { die "Required command $i not found"; exit 1; }
164: done
165: }
166:
167: # check if any of the given virtual guests are running
168: # $* - names of guests to check
169: running_any()
170: {
171: command -v virsh >/dev/null || return 1
172: for host in $*
173: do
174: virsh list --name 2>/dev/null | grep "^$host$" >/dev/null && return 0
175: done
176: return 1
177: }
178:
179: #############################################
180: # search and replace strings throughout a
181: # whole directory
182: #
183:
184: function searchandreplace {
185:
186: SEARCHSTRING="$1"
187: REPLACESTRING="$2"
188: DESTDIR="$3"
189:
190: [ -d "$DESTDIR" ] || die "$DESTDIR is not a directory!"
191:
192:
193: ###########################################
194: # search and replace in each found file the
195: # given string
196: #
197:
198: for eachfoundfile in `find $DESTDIR -type f`
199: do
200: sed -i -e "s/$SEARCHSTRING/$REPLACESTRING/g" "$eachfoundfile"
201: done
202:
203: }
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