From b6a1f43075f96b0028e33ed1af1fe31068791d24 Mon Sep 17 00:00:00 2001 From: Tony Ambardar Date: Wed, 7 Mar 2018 21:00:45 -0800 Subject: [PATCH] base-files: fix UCI config parsing and callback handling There are several long-standing issues present in the UCI shell API as documented in https://wiki.openwrt.org/doc/devel/config-scripting. They relate both to high-level, user-defined callback functions used to process UCI config files, and also to low-level functions used within scripts generally. The related problems have been encountered now and in the past, e.g. https://forum.openwrt.org/viewtopic.php?id=54295, and include: a) UCI parsing option() function and user-defined option_cb() callbacks being erroneously called during processing of "list" config file entries; b) normal usage of the low-level config_set() unexpectedy calling any defined option_cb() if present; and c) handling of the list_cb() not respecting the NO_CALLBACK variable. Root causes include a function stack "inversion", where the low-level config_set() function incorrectly calls the high-level option() function, intended only for processing the "option" keyword of UCI config files. This change addresses the inversion and other issues, making the option handling code more consistent and smaller, and simplifying developers' usage of UCI callbacks. Signed-off-by: Tony Ambardar Signed-off-by: Hans Dedecker [PKG_RELEASE increase] --- package/base-files/Makefile | 2 +- package/base-files/files/lib/functions.sh | 13 +++++-------- 2 files changed, 6 insertions(+), 9 deletions(-) diff --git a/package/base-files/Makefile b/package/base-files/Makefile index 1d034fdede..4fbc9a265b 100644 --- a/package/base-files/Makefile +++ b/package/base-files/Makefile @@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk include $(INCLUDE_DIR)/version.mk PKG_NAME:=base-files -PKG_RELEASE:=173.6 +PKG_RELEASE:=173.7 PKG_FLAGS:=nonshared PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/ diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh index c69feb33b8..36ee4910a5 100755 --- a/package/base-files/files/lib/functions.sh +++ b/package/base-files/files/lib/functions.sh @@ -57,16 +57,16 @@ config () { export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1)) name="${name:-cfg$CONFIG_NUM_SECTIONS}" append CONFIG_SECTIONS "$name" - [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name" export ${NO_EXPORT:+-n} CONFIG_SECTION="$name" - export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype" + config_set "$CONFIG_SECTION" "TYPE" "${cfgtype}" + [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name" } option () { local varname="$1"; shift local value="$*" - export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value" + config_set "$CONFIG_SECTION" "${varname}" "${value}" [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*" } @@ -81,7 +81,7 @@ list() { config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value" config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len" append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP" - list_cb "$varname" "$*" + [ -n "$NO_CALLBACK" ] || list_cb "$varname" "$*" } config_unset() { @@ -113,11 +113,8 @@ config_set() { local section="$1" local option="$2" local value="$3" - local old_section="$CONFIG_SECTION" - CONFIG_SECTION="$section" - option "$option" "$value" - CONFIG_SECTION="$old_section" + export ${NO_EXPORT:+-n} "CONFIG_${section}_${option}=${value}" } config_foreach() {