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Better safe than sorry.
Reviewed-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Add missing usage hints for -p and -o arguments.
Fixes: e16fa068a573 ("jshn: add support for namespaces")
Fixes: eb30a03048f8 ("libubox, jshn: add option to write output to a file")
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Fixes following error:
Invalid read of size 1
at 0x4C32D04: strlen
by 0x5043367: json_tokener_parse_ex
by 0x5045316: json_tokener_parse_verbose
by 0x504537D: json_tokener_parse
by 0x401AB1: jshn_parse (jshn.c:179)
by 0x40190D: jshn_parse_file (jshn.c:370)
by 0x40190D: main (jshn.c:434)
Address 0x5848c4c is 0 bytes after a block of size 1,036 alloc'd
at 0x4C2FB0F: malloc
by 0x4018E2: jshn_parse_file (jshn.c:357)
by 0x4018E2: main (jshn.c:434)
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Fixes following leaks of memory:
352 (72 direct, 280 indirect) bytes in 1 blocks are definitely lost in loss record 3 of 3
at 0x4C31B25: calloc
by 0x5042E1F: json_object_new_array
by 0x5044B02: json_tokener_parse_ex
by 0x5045316: json_tokener_parse_verbose
by 0x504537D: json_tokener_parse
by 0x401AA9: jshn_parse (jshn.c:179)
by 0x401977: main (jshn.c:378)
752 (72 direct, 680 indirect) bytes in 1 blocks are definitely lost in loss record 6 of 6
at 0x4C31B25: calloc
by 0x50424CF: json_object_new_object
by 0x5044B38: json_tokener_parse_ex
by 0x5045316: json_tokener_parse_verbose
by 0x504537D: json_tokener_parse
by 0x401AA9: jshn_parse (jshn.c:179)
by 0x401977: main (jshn.c:380)
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Fixes following leak of memory:
6,016 bytes in 1 blocks are possibly lost in loss record 1 of 1
at 0x4C31B25: calloc
by 0x1098F8: main (jshn.c:353)
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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Turn longer switch cases into separate functions in order to make it
easier to follow. Don't return from the cases as it makes future
cleaning up harder.
Signed-off-by: Petr Štetiar <ynezz@true.cz>
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This would allow board_config_flush to run one command instead
of two and would be faster and safer than redirecting output
and moving a file between filesystems.
Originally discussed here:
http://lists.openwrt.org/pipermail/openwrt-devel/2017-December/010127.html
Signed-off-by: Roman Yeryomin <roman@advem.lv>
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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The existing read functionality feeds the complete JSON to jshn as a
cmdline argument, leading to `-ash: jshn: Argument list too long`
errors for JSONs bigger than ca. 100KB.
This commit adds the ability to read the JSON directly from a file if
wanted, removing this shell-imposed size limit.
Tested on x86-64 and ar71xx. An mmap()-based solution was also evaluated,
but found to make no performance difference on either platform.
Signed-off-by: Christian Beier <dontmind@freeshell.org>
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Instead of abort parsing, properly deal with "null" values by implementing
support for reading and formatting such values.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
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This allows for reading in and writing out bigger JSON Numbers.
Following test script (that fails to print correct values _without_ this
commit) verifies the functionality (tested on x86-64 as well as on ar71xx):
---snip---
# assumes you built jshn and sourced jshn.sh
echo testing reading-in JSON
SHELL_BIGNUM=12147483647
json_init
json_load "{ \"bignum\": $SHELL_BIGNUM }"
json_get_var BIGNUM bignum
echo jshn bignum: $BIGNUM
echo shll bignum: $SHELL_BIGNUM
echo testing writing-out JSON
json_init
json_add_int bigint $SHELL_BIGNUM
json_dump
--snap---
Signed-off-by: Christian Beier <dontmind@freeshell.org>
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Consistently handle allocation failures. Some functions are changed to
return bool or int instead of void to allow returning an error.
Also fix a buffer size miscalculation in lua/uloop and use _exit() instead
of exit() on errors after forking.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
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json files
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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Though currently jshn is more a one-shot data transformation tool and
won't leak much memory in its lifetime, people may use it as example
code, so do it right.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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Signed-off-by: John Crispin <blogic@openwrt.org>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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this includes a fallback for legacy support
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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Can be used to fix variable namespace clashes in library code using jshn
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
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variable restrictions
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