1 files changed, 231 insertions, 0 deletions
diff --git a/usr/sbin/pc-sysinstall/backend/functions-parse.sh b/usr/sbin/pc-sysinstall/backend/functions-parse.sh
new file mode 100644
index 0000000..a9453cc
--- /dev/null
+++ b/usr/sbin/pc-sysinstall/backend/functions-parse.sh
@@ -0,0 +1,231 @@
+#!/bin/sh
+#-
+# Copyright (c) 2010 iXsystems, Inc.  All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD: src/usr.sbin/pc-sysinstall/backend/functions-parse.sh,v 1.2 2010/06/27 16:46:11 imp Exp $
+
+# functions.sh
+# Library of functions which pc-sysinstall may call upon for parsing the config
+
+# which gets the value of a setting in the provided line
+get_value_from_string()
+{
+  if [ ! -z "${1}" ]
+  then
+    VAL="`echo ${1} | cut -d '=' -f 2`"
+    export VAL
+  else
+    echo "Error: Did we forgot to supply a string to parse?"
+    exit 1
+  fi
+};
+
+# Get the value from the cfg file including spaces
+get_value_from_cfg_with_spaces()
+{
+  if [ ! -z "${1}" ]
+  then
+    VAL=`grep "^${1}=" ${CFGF} | head -n 1 | cut -d '=' -f 2`
+    export VAL
+  else
+    exit_err "Error: Did we forgot to supply a setting to grab?"
+  fi
+};
+
+
+# Get the value from the cfg file
+get_value_from_cfg()
+{
+  if [ ! -z "${1}" ]
+  then
+    VAL=`grep "^${1}=" ${CFGF} | head -n 1 | cut -d '=' -f 2 | tr -d ' '`
+    export VAL
+  else
+    exit_err "Error: Did we forgot to supply a setting to grab?"
+  fi
+};
+
+# Checks the value of a setting in the provided line with supplied possibilities
+# 1 = setting we are checking,  2 = list of valid values
+if_check_value_exists()
+{
+  if [ ! -z "${1}" -a ! -z "${2}" ]
+  then
+    # Get the first occurance of the setting from the config, strip out whitespace
+
+    VAL=`grep "^${1}" ${CFGF} | head -n 1 | cut -d '=' -f 2 | tr -d ' '`
+    if [ -z "${VAL}" ]
+    then
+      # This value doesn't exist, lets return
+      return 0
+    fi
+
+
+    VALID="1"
+    for i in ${2}
+    do
+      if [ "$VAL" = "${i}" ]
+      then 
+        VALID="0"
+      fi
+    done 
+    if [ "$VALID" = "1" ]
+    then
+      exit_err "Error: ${1} is set to unknown value $VAL"
+    fi
+  else
+    exit_err "Error: Did we forgot to supply a string to parse and setting to grab?"
+  fi
+};
+
+# Checks the value of a setting in the provided line with supplied possibilities
+# 1 = setting we are checking,  2 = list of valid values
+check_value()
+{
+  if [ ! -z "${1}" -a ! -z "${2}" ]
+  then
+    # Get the first occurance of the setting from the config, strip out whitespace
+    VAL=`grep "^${1}" ${CFGF} | head -n 1 | cut -d '=' -f 2 | tr -d ' '`
+    VALID="1"
+    for i in ${2}
+    do
+      if [ "$VAL" = "${i}" ]
+      then 
+        VALID="0"
+      fi
+    done 
+    if [ "$VALID" = "1" ]
+    then
+      exit_err "Error: ${1} is set to unknown value $VAL"
+    fi
+  else
+    exit_err "Error: Did we forgot to supply a string to parse and setting to grab?"
+  fi
+};
+
+# Checks for the presense of the supplied arguements in the config file
+# 1  = values to confirm exist
+file_sanity_check()
+{
+  if [ ! -z "$CFGF" -a ! -z "$1" ]
+  then
+    for i in $1
+    do
+       grep "^${i}=" $CFGF >/dev/null 2>/dev/null
+       if [ "$?" = "0" ]
+       then
+         LN=`grep "^${i}=" ${CFGF} | head -n 1 | cut -d '=' -f 2 | tr -d ' '`
+         if [ -z "${LN}" ]
+         then
+           echo "Error: Config fails sanity test! ${i}= is empty"
+           exit 1
+         fi
+       else
+         echo "Error: Config fails sanity test! Missing ${i}="
+         exit 1
+       fi
+    done
+  else
+    echo "Error: Missing config file, and / or values to sanity check for!"
+    exit 1
+  fi
+};
+
+
+# Function which merges the contents of a new config into the specified old one
+# Only works with <val>= type configurations
+merge_config()
+{
+  OLDCFG="${1}"
+  NEWCFG="${2}"
+  FINALCFG="${3}"
+
+  # Copy our oldcfg to the new one, which will be used as basis
+  cp ${OLDCFG} ${FINALCFG}
+
+  # Remove blank lines from new file
+  cat ${NEWCFG} | sed '/^$/d' > ${FINALCFG}.tmp
+
+  # Set our marker if we've found any
+  FOUNDMERGE="NO"
+
+  while read newline
+  do
+   echo ${newline} | grep "^#" >/dev/null 2>/dev/null
+   if [ "$?" != "0" ] ; then
+     VAL="`echo ${newline} | cut -d '=' -f 1`"
+     cat ${OLDCFG} | grep ${VAL} >/dev/null 2>/dev/null
+     if [ "$?" != "0" ] ; then
+       if [ "${FOUNDMERGE}" = "NO" ] ; then
+         echo "" >> ${FINALCFG}
+         echo "# Auto-merged values from newer ${NEWCFG}" >> ${FINALCFG}
+         FOUNDMERGE="YES"
+       fi
+       echo "${newline}" >> ${FINALCFG}
+     fi
+   fi
+  done < ${FINALCFG}.tmp
+  rm ${FINALCFG}.tmp
+
+};
+
+# Loop to check for a specified mount-point in a list
+check_for_mount()
+{
+  MNTS="${1}"
+  FINDMNT="${2}"
+
+  # Check if we found a valid root partition
+  for CHECKMNT in `echo ${MNTS} | sed 's|,| |g'`
+  do
+    if [ "${CHECKMNT}" = "${FINDMNT}" ] ; then
+      return 0
+    fi
+  done
+    
+  return 1
+};
+
+# Function which returns the next line in the specified config file
+get_next_cfg_line()
+{
+  CURFILE="$1"
+  CURLINE="$2"
+
+  FOUND="1"
+  
+  while read line
+  do
+    if [ "$FOUND" = "0" ] ; then
+      VAL="$line" ; export VAL
+      return
+    fi
+    if [ "$line" = "${CURLINE}" ] ; then
+      FOUND="0"
+    fi
+  done <${CURFILE}
+
+  # Got here, couldn't find this line or at end of file, set VAL to ""
+  VAL="" ; export VAL
+};