X-Git-Url: http://ftp.carnet.hr/carnet-debian/scm?p=carnet-tools-cn.git;a=blobdiff_plain;f=functions.sh;h=f3124da1f22fccae379682077f0adb129baf7be4;hp=2f14b52ebdca6ccfc674b4e15bf29441962cf9ea;hb=9335a249285abad7e4bff2d75fb61ffc61149170;hpb=11273dd169ba2a6b8e742bd7d8bc43958c5306b7

diff --git a/functions.sh b/functions.sh
index 2f14b52..f3124da 100644
--- a/functions.sh
+++ b/functions.sh
@@ -1,105 +1,161 @@
 # by ddzeko & ico, Fri, 18 Mar 2005 14:44:08 +0100
 cp_get_ifaddr() {
   [ "$CP_SCRIPT_DEBUG" ] && set -vx
-  local ifaddr interface
+  local ifaddr interface echo_return
+  echo_return="$CP_ECHO_RETURN" # since we're making our own calls
+  # in our own way we need to set CP_ECHO_RETURN the way we want it
+  # but preserving initial state so it could be used afterwards
+  CP_ECHO_RETURN=""
 
   interface="$1"
-  [ -z "$interface" ] && interface=lo
+  if [ -z "$interface" ]; then
+    cp_get_ifdefault dev
+    interface="$RET"
+    [ -z "$interface" ] && interface=lo
+  fi
 
   if ! ifconfig $interface 2> /dev/null >> /dev/null; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_get_ifaddr: $interface: No such interface"
+    echo "cp_get_ifaddr: $interface: No such interface" 1>&2
+    CP_ECHO_RETURN="$echo_return"
     return 1
   fi
 
   ifaddr="`/sbin/ifconfig $interface | awk '/inet/{ printf("%s\n",substr($2,index($2,":")+1)) }'`"
 
   if [ -z $ifaddr ]; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_get_ifaddr: $interface: No such ipaddress"
+    echo "cp_get_ifaddr: $interface: No such ipaddress" 1>&2
+    CP_ECHO_RETURN="$echo_return"
     return 1
   fi
 
   RET="$ifaddr"
-  [ -z "$CP_ECHO_RETURN" ] || echo $RET
+  [ -z "$echo_return" ] || echo $RET
+  CP_ECHO_RETURN="$echo_return"
 }
 
 # by ddzeko & ico, Fri, 18 Mar 2005 14:44:08 +0100
 cp_get_ifmask() {
   [ "$CP_SCRIPT_DEBUG" ] && set -vx
-  local ifmask interface
+  local ifmask interface echo_return
+  echo_return="$CP_ECHO_RETURN" # since we're making our own calls
+  # in our own way we need to set CP_ECHO_RETURN the way we want it
+  # but preserving initial state so it could be used afterwards
+  CP_ECHO_RETURN=""
 
   interface="$1"
-  [ -z "$interface" ] && interface=lo
+  if [ -z "$interface" ]; then
+    cp_get_ifdefault dev
+    interface="$RET"
+    [ -z "$interface" ] && interface=lo
+  fi
 
   if ! ifconfig $interface 2> /dev/null >> /dev/null; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_get_ifmask: $interface: No such interface"
+    echo "cp_get_ifmask: $interface: No such interface" 1>&2
+    CP_ECHO_RETURN="$echo_return"
     return 1
   fi
 
   ifmask="`/sbin/ifconfig $interface | awk '/Mask/{if($3~/Mask/)a=$3;else if ($4~/Mask/)a=$4;printf ("%s\n", substr(a,index(a,":")+1))}'`"
 
   if [ -z "$ifmask" ]; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_get_ifmask: $interface: No such netmask"
+    echo "cp_get_ifmask: $interface: No such netmask" 1>&2
+    CP_ECHO_RETURN="$echo_return"
     return 1
   fi
 
   RET="$ifmask"
-  [ -z "$CP_ECHO_RETURN" ] || echo $RET
+  [ -z "$echo_return" ] || echo $RET
+  CP_ECHO_RETURN="$echo_return"
 }
 
+# by ddzeko, Mon, 21 Mar 2005 07:00:22 +0100
+cp_get_ifdefault() {
+  local echo_return
+  echo_return="$CP_ECHO_RETURN" # since we're making our own calls
+  # in our own way we need to set CP_ECHO_RETURN the way we want it
+  # but preserving initial state so it could be used afterwards
+  CP_ECHO_RETURN=""
+
+  [ "$CP_SCRIPT_DEBUG" ] && set -vx
+  RET=""
+  case $1 in
+    dev)  RET=`route -n | awk '/^0.0.0.0/{print $8}'` ;;
+    addr) RET=`route -n | awk '/^0.0.0.0/{print $2}'` ;;
+    *)    echo "cp_get_ifdefault: Argument required (dev or addr)" >&2 ;;
+  esac
+  [ -z "$RET" -a "$1" -a "$CP_VERBOSE" ] && echo "cp_get_ifdefault: No default route" >&2
+  [ -z "$echo_return" ] || echo $RET
+  CP_ECHO_RETURN="$echo_return"
+  [ -z "$RET" ] && return 1
+}
 
 # by ico, Tue, 15 Mar 2005 14:04:21 +0100
-cp_get_cidr() {
+cp_get_netaddr() {
   [ "$CP_SCRIPT_DEBUG" ] && set -vx
-  local netmask ipaddress interface cidr
+  local netmask ipaddress interface cidr echo_return
+  echo_return="$CP_ECHO_RETURN" # since we're making our own calls
+  # in our own way we need to set CP_ECHO_RETURN the way we want it
+  # but preserving initial state so it could be used afterwards
+  CP_ECHO_RETURN=""
 
   interface="$1"
   if [ -z "$interface" ]; then
-    interface="`route | awk '/^default/{print $8}'`"
+    cp_get_ifdefault dev
+    interface="$RET"
     [ -z "$interface" ] && interface=lo
   fi
 
   if ! ifconfig $interface 2> /dev/null >> /dev/null; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_get_cidr: $interface: No such interface"
+    echo "cp_get_netaddr: $interface: No such interface" 1>&2
+    CP_ECHO_RETURN="$echo_return"
     return 1
   fi
 
-  ipaddress="`cp_get_ifaddr $interface`"
+  cp_get_ifaddr "$interface"
+  ipaddress="$RET"
   if [ -z $ipaddress ]; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_get_cidr: $interface: No such ipaddress"
+    echo "cp_get_netaddr: $interface: No such ipaddress" 1>&2
+    CP_ECHO_RETURN="$echo_return"
     return 1
   fi
-  netmask="`cp_get_ifmask $interface`"
+  cp_get_ifmask "$interface"
+  netmask="$RET"
   if [ -z $netmask ]; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_get_cidr: $interface: No such netmask"
+    echo "cp_get_netaddr: $interface: No such netmask" 1>&2
+    CP_ECHO_RETURN="$echo_return"
     return 1
   fi
 
-  cidr="`ipcalc -n $ipaddress $netmask | grep Network: | awk '{print $2}'`"
-
+  if [ "$netmask" = "255.255.255.255" ]; then
+    cidr="$ipaddress/32"
+  else 
+    cidr="`ipcalc -ncb $ipaddress $netmask | awk '/^Network:/{print $2}'`"
+  fi
+  
   RET="$cidr"
-  [ -z "$CP_ECHO_RETURN" ] || echo $RET
+  [ -z "$echo_return" ] || echo $RET
+  CP_ECHO_RETURN="$echo_return"
 }
 
 # by ico, Tue, 15 Mar 2005 14:04:21 +0100
 cp_backup_conffile() {
-  [ "$DEBIAN_SCRIPT_DEBUG" ] && set -vx
+  [ "$CP_SCRIPT_DEBUG" ] && set -vx
   local file_bak
 
-  if [ -z $1 ]; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "Usage: cp_backup_conffile <file>"
+  if [ -z "$1" ]; then
     return 1
   fi
-  if [ ! -f $1 ]; then
-    [ -z "$CP_ECHO_RETURN" ] || echo "cp_backup_conffile: $1: No such file"
+  if [ ! -f "$1" ]; then
+    echo "cp_backup_conffile: $1: No such file" 1>&2
     return 1
   fi
 
   file_bak="/var/backups/`basename $1`.bak"
 
   if [ ! -f $file_bak ]; then
-    cp -pf $1 $file_bak
+    cp -pf "$1" $file_bak
   else
-    if ! cmp -s $1 $file_bak; then
+    if ! cmp -s "$1" $file_bak; then
       /usr/bin/savelog -p -c 7 $file_bak > /dev/null 2> /dev/null
       cp -pf $1 $file_bak
     fi
@@ -107,6 +163,11 @@ cp_backup_conffile() {
 }
 
 # by jelly, Tue, 15 Mar 2005 14:04:21 +0100
+# A sed wrapper, to use instead of perl -pi -e
+#  - relatively safe in-place s///g
+#  - takes care of symlinks and ownership
+# returns true if changed, false if nothing happened
+#
 cp_check_and_sed() {
   [ "$CP_SCRIPT_DEBUG" ] && set -vx
   local s sedcmd ret i
@@ -115,16 +176,16 @@ cp_check_and_sed() {
   sedcmd="$1"
   shift
   ret=2
-  for i in $*
+  for i in "$@"
   do
     [ -e "$i" ]        || continue
-    egrep -q "$s" "$i" || continue
+    if egrep -q "$s" "$i"; then
+      continue
+    fi
     [ -h "$i" ]        && i=$(readlink -f "$i")
     sed "$sedcmd" "$i" > "$i.dpkg-tmp"
-    chown --reference "$i" "$i.dpkg-tmp"
-    chmod --reference "$i" "$i.dpkg-tmp"
-    if ! cmp -s "$i" "$i.dpkg-tmp"; then
-      mv "$i.dpkg-tmp" "$i"
+    if ! cmp -s "$i" "$i.dpkg-tmp" 2>&1 >/dev/null; then
+      cp_mv "$i.dpkg-tmp" "$i"
     else
       rm "$i.dpkg-tmp"
     fi
@@ -172,10 +233,82 @@ For your convenience, a partial output of the last $pkg installation
 is included below.
 
 ----------
-$CP_NOTICE
-----------"
+${CP_NOTICE}----------"
   
     echo "$CP_NOTICE" | /usr/sbin/sendmail -t &
     sleep 1
   fi
 }
+
+# by ddzeko, Mon, 21 Mar 2005 11:31:59 +0100
+cp_mv () {
+  [ "$CP_SCRIPT_DEBUG" ] && set -vx
+  local new old
+  if [ -z "$2" ]; then
+    return 1
+  fi
+  new="$1"
+  old="$2"
+  if [ -e "$old" ]; then
+    chown --reference "$old" "$new"
+    chmod --reference "$old" "$new"
+  fi
+  mv "$new" "$old"
+}
+# by ddzeko, Mon, 21 Mar 2005 13:35:42 +0100
+cp_yes_no () {
+  [ "$CP_SCRIPT_DEBUG" ] && set -vx
+  local prompt answer
+  prompt="$1"
+  [ "$prompt" ] || prompt="Are you sure?"
+  RET=""
+
+  # check to prevent user from using this when debconf is active
+  # (it would break communication with its backend - uses stdin/out)
+  if [ "$DEBCONF_REDIR" ]; then
+    echo "cn_yes_no: debconf redirection detected" >&2
+    return 1
+  fi
+
+  echo -n "$prompt (y)es/(n)o: "
+  read answer
+  case "$answer" in
+    y*)
+      echo
+      RET=y
+      ;;
+    n*)
+      echo
+      RET=n
+      ;;
+    *)
+      echo
+      echo "Please read the message and choose y or n"
+      cp_yes_no
+      ;;
+  esac
+}
+
+# by ddzeko, Tue, 29 Mar 2005 17:37:52 +0200
+#
+# db_get seems to return error messages if the requested variable 
+# is not found - we do not find that desirable, and checking $? with
+# set -e turned on seems to be a bit of a problem
+# --> that's why we wrap the db_get call to return unset RET variable
+#     instead of some gibberish error message that our script does
+#     not expect
+cp_db_get_wrap() {
+  local var
+  var="$1"
+  if ! db_get "$var"; then
+    case "$RET" in
+        *doesn\'t\ exist)
+          RET=""
+          ;;
+        [0-9][0-9]\ ?*) # other errors
+          RET=""
+          ;;
+    esac
+  fi
+}
+