src/functions/functions.macros

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2012  IPFire Network Development Team                         #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 function macro_file() {
  23         local macro=${1}
  24         assert isset macro
  25
  26         # Make the name uppercase.
  27         macro=${macro^^}
  28
  29         local file
  30         local dir
  31         for dir in ${FIREWALL_MACROS_DIRS}; do
  32                 file="${dir}/${macro}"
  33
  34                 if [ -r "${file}" ]; then
  35                         print "${file}"
  36                         return ${EXIT_OK}
  37                 fi
  38         done
  39
  40         return ${EXIT_ERROR}
  41 }
  42
  43 function macro_exists() {
  44         local macro=${1}
  45         assert isset macro
  46
  47         macro_file ${macro} &>/dev/null \
  48                 && return ${EXIT_TRUE} || return ${EXIT_FALSE}
  49 }
  50
  51 function macro_read() {
  52         local macro=${1}
  53         assert isset macro
  54
  55         # Make the name uppercase.
  56         macro=${macro^^}
  57
  58         local file=$(macro_file ${macro})
  59         assert isset file
  60
  61         log DEBUG "Parsing macro '${macro}' (${file})."
  62
  63         local src dst
  64         local sport dport
  65         local proto
  66         local var
  67         local line
  68
  69         while read src dst proto sport dport; do
  70                 # Skip lines that start with a "#".
  71                 [ "${src:0:1}" = "#" ] && continue
  72
  73                 if [ "${src}" = "INCLUDE" ]; then
  74                         macro_read ${dst}
  75                         continue
  76                 fi
  77
  78                 line=""
  79
  80                 # Remove all the dashes.
  81                 for var in src dst proto sport dport; do
  82                         [ "${!var}" = "-" ] && continue
  83
  84                         line="${line} ${var}=\"${!var}\""
  85                 done
  86
  87                 line="$(echo ${line})"
  88                 print "${line}"
  89         done < ${file}
  90 }