230 lines
5.9 KiB
Bash
Executable File
230 lines
5.9 KiB
Bash
Executable File
#!/bin/sh
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#-
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# Copyright (c) 2010 iXsystems, Inc. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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# functions.sh
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# Library of functions which pc-sysinstall may call upon for parsing the config
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# which gets the value of a setting in the provided line
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get_value_from_string()
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{
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if [ -n "${1}" ]
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then
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export VAL="`echo ${1} | cut -d '=' -f 2-`"
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else
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echo "Error: Did we forgot to supply a string to parse?"
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exit 1
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fi
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};
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# Get the value from the cfg file including spaces
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get_value_from_cfg_with_spaces()
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{
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if [ -n "${1}" ]
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then
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export VAL="`grep ^${1}= ${CFGF} | head -n 1 | cut -d '=' -f 2-`"
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else
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exit_err "Error: Did we forgot to supply a setting to grab?"
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fi
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};
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# Get the value from the cfg file
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get_value_from_cfg()
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{
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if [ -n "${1}" ]
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then
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export VAL=`grep "^${1}=" ${CFGF} | head -n 1 | cut -d '=' -f 2- | tr -d ' '`
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else
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exit_err "Error: Did we forgot to supply a setting to grab?"
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fi
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};
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# Checks the value of a setting in the provided line with supplied possibilities
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# 1 = setting we are checking, 2 = list of valid values
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if_check_value_exists()
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{
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if [ -n "${1}" -a -n "${2}" ]
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then
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# Get the first occurrence of the setting from the config, strip out whitespace
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VAL=`grep "^${1}" ${CFGF} | head -n 1 | cut -d '=' -f 2- | tr -d ' '`
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if [ -z "${VAL}" ]
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then
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# This value doesn't exist, lets return
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return 0
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fi
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VALID="1"
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for i in ${2}
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do
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VAL=`echo "$VAL"|tr A-Z a-z`
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if [ "$VAL" = "${i}" ]
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then
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VALID="0"
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fi
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done
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if [ "$VALID" = "1" ]
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then
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exit_err "Error: ${1} is set to unknown value $VAL"
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fi
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else
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exit_err "Error: Did we forgot to supply a string to parse and setting to grab?"
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fi
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};
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# Checks the value of a setting in the provided line with supplied possibilities
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# 1 = setting we are checking, 2 = list of valid values
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check_value()
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{
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if [ -n "${1}" -a -n "${2}" ]
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then
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# Get the first occurrence of the setting from the config, strip out whitespace
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VAL=`grep "^${1}" ${CFGF} | head -n 1 | cut -d '=' -f 2- | tr -d ' '`
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VALID="1"
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for i in ${2}
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do
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if [ "$VAL" = "${i}" ]
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then
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VALID="0"
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fi
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done
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if [ "$VALID" = "1" ]
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then
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exit_err "Error: ${1} is set to unknown value $VAL"
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fi
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else
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exit_err "Error: Did we forgot to supply a string to parse and setting to grab?"
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fi
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};
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# Checks for the presence of the supplied arguments in the config file
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# 1 = values to confirm exist
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file_sanity_check()
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{
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if [ -n "$CFGF" -a -n "$1" ]
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then
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for i in $1
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do
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grep -q "^${i}=" $CFGF 2>/dev/null
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if [ $? -eq 0 ]
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then
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LN=`grep "^${i}=" ${CFGF} | head -n 1 | cut -d '=' -f 2- | tr -d ' '`
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if [ -z "${LN}" ]
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then
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echo "Error: Config fails sanity test! ${i}= is empty"
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exit 1
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fi
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else
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echo "Error: Config fails sanity test! Missing ${i}="
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exit 1
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fi
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done
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else
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echo "Error: Missing config file, and / or values to sanity check for!"
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exit 1
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fi
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};
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# Function which merges the contents of a new config into the specified old one
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# Only works with <val>= type configurations
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merge_config()
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{
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OLDCFG="${1}"
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NEWCFG="${2}"
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FINALCFG="${3}"
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# Copy our oldcfg to the new one, which will be used as basis
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cp ${OLDCFG} ${FINALCFG}
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# Remove blank lines from new file
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cat ${NEWCFG} | sed '/^$/d' > ${FINALCFG}.tmp
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# Set our marker if we've found any
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FOUNDMERGE="NO"
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while read newline
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do
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echo ${newline} | grep -q "^#" 2>/dev/null
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if [ $? -ne 0 ] ; then
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VAL="`echo ${newline} | cut -d '=' -f 1`"
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cat ${OLDCFG} | grep -q ${VAL} 2>/dev/null
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if [ $? -ne 0 ] ; then
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if [ "${FOUNDMERGE}" = "NO" ] ; then
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echo "" >> ${FINALCFG}
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echo "# Auto-merged values from newer ${NEWCFG}" >> ${FINALCFG}
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FOUNDMERGE="YES"
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fi
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echo "${newline}" >> ${FINALCFG}
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fi
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fi
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done < ${FINALCFG}.tmp
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rm ${FINALCFG}.tmp
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};
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# Loop to check for a specified mount-point in a list
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check_for_mount()
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{
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MNTS="${1}"
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FINDMNT="${2}"
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# Check if we found a valid root partition
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for CHECKMNT in `echo ${MNTS} | sed 's|,| |g'`
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do
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if [ "${CHECKMNT}" = "${FINDMNT}" ] ; then
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return 0
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fi
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done
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return 1
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};
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# Function which returns the next line in the specified config file
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get_next_cfg_line()
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{
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CURFILE="$1"
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CURLINE="$2"
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FOUND="1"
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while read line
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do
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if [ "$FOUND" = "0" ] ; then
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export VAL="$line"
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return
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fi
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if [ "$line" = "${CURLINE}" ] ; then
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FOUND="0"
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fi
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done <${CURFILE}
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# Got here, couldn't find this line or at end of file, set VAL to ""
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export VAL=""
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};
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