move platform specific base-files into target/linux/<targetname>
[openwrt.git] / package / base-files / default / lib / config / uci.sh
1 #!/bin/sh
2 # Shell script defining macros for manipulating config files
3 #
4 # Copyright (C) 2006 by Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
5 # Copyright (C) 2006 by Felix Fietkau <nbd@openwrt.org>
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 2 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 GNU
15 # 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, write to the Free Software
19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20
21 uci_load() {
22         local PACKAGE="$1"
23         config_load "$PACKAGE"
24         local PACKAGE_BASE="$(basename "$PACKAGE")"
25         [ -f "/tmp/.uci/${PACKAGE_BASE}" ] && {
26                 . "/tmp/.uci/${PACKAGE_BASE}"
27                 config_cb
28         }
29 }
30
31 uci_do_update() {
32         local FILENAME="$1"
33         local UPDATE="$2"
34         awk -f /lib/config/uci-update.awk -f - <<EOF
35 BEGIN {
36         config = read_file("$FILENAME")
37         $UPDATE
38         print config
39 }
40 EOF
41 }
42
43 uci_add_update() {
44         local PACKAGE="$1"
45         local UPDATE="$2"
46         local PACKAGE_BASE="$(basename "$PACKAGE")"
47         
48         # FIXME: add locking?
49         mkdir -p "/tmp/.uci"
50         echo "$UPDATE" >> "/tmp/.uci/${PACKAGE_BASE}"
51 }
52
53 uci_set() {
54         local PACKAGE="$1"
55         local CONFIG="$2"
56         local OPTION="$3"
57         local VALUE="$4"
58
59         ( # spawn a subshell so you don't mess up the current environment
60                 uci_load "$PACKAGE"
61                 config_get type "$CONFIG" TYPE
62                 [ -z "$type" ]
63         ) || uci_add_update "$PACKAGE" "CONFIG_SECTION='$CONFIG'${N}option '$OPTION' '$VALUE'"
64 }
65
66 uci_add() {
67         local PACKAGE="$1"
68         local TYPE="$2"
69         local CONFIG="$3"
70
71         uci_add_update "$PACKAGE" "config '$TYPE' '$CONFIG'"
72 }
73
74 uci_rename() {
75         local PACKAGE="$1"
76         local CONFIG="$2"
77         local VALUE="$3"
78
79         uci_add_update "$PACKAGE" "config_rename '$CONFIG' '$VALUE'"
80 }
81
82 uci_remove() {
83         local PACKAGE="$1"
84         local CONFIG="$2"
85         local OPTION="$3"
86
87         if [ -z "$OPTION" ]; then
88                 uci_add_update "$PACKAGE" "config_clear '$CONFIG'"
89         else
90                 uci_add_update "$PACKAGE" "config_unset '$CONFIG' '$OPTION'"
91         fi
92 }
93
94 uci_commit() {
95         local PACKAGE="$1"
96         local PACKAGE_BASE="$(basename "$PACKAGE")"
97         
98         mkdir -p /tmp/.uci
99         lock "/tmp/.uci/$PACKAGE_BASE.lock"
100         [ -f "/tmp/.uci/$PACKAGE_BASE" ] && (
101                 updatestr=""
102                 
103                 # replace handlers
104                 config() {
105                         append updatestr "config = update_config(config, \"@$2=$1\")" "$N"
106                 }
107                 option() {
108                         append updatestr "config = update_config(config, \"$CONFIG_SECTION.$1=$2\")" "$N"
109                 }
110                 config_rename() {
111                         append updatestr "config = update_config(config, \"&$1=$2\")" "$N"
112                 }
113                 config_unset() {
114                         append updatestr "config = update_config(config, \"-$1.$2\")" "$N"
115                 }
116                 config_clear() {
117                         append updatestr "config = update_config(config, \"-$1\")" "$N"
118                 }
119                 
120                 . "/tmp/.uci/$PACKAGE_BASE"
121
122                 # completely disable handlers so that they don't get in the way
123                 config() {
124                         return 0
125                 }
126                 option() {
127                         return 0
128                 }
129                 
130                 config_load "$PACKAGE" || CONFIG_FILENAME="$ROOT/etc/config/$PACKAGE_BASE"
131                 uci_do_update "$CONFIG_FILENAME" "$updatestr" > "/tmp/.uci/$PACKAGE_BASE.new" && {
132                         mv -f "/tmp/.uci/$PACKAGE_BASE.new" "$CONFIG_FILENAME" && \
133                         rm -f "/tmp/.uci/$PACKAGE_BASE"
134                 } 
135         )
136         lock -u "/tmp/.uci/$PACKAGE_BASE.lock"
137 }
138
139