Those functions were moved out of blobmsg.h.
Fixes: 0918243e90 ("move json formatting to the blobmsg_json library")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Introduce _len variants of blobmsg attribute checking functions which
aims to provide safer implementation as those functions should limit all
memory accesses performed on the blob to the range [attr, attr + len]
(upper bound non inclusive) and thus should be suited for checking of
untrusted blob attributes.
While at it add some comments in order to make it clear.
Signed-off-by: Tobias Schramm <tobleminer@gmail.com>
[_safe -> _len, blobmsg_check_array_len fix, commit subject/desc facelift]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
blobmsg_check_attr_len adds a length limit specifying the max offset
from attr that can be read safely.
Signed-off-by: Tobias Schramm <tobleminer@gmail.com>
[rebased and reworked, line wrapped commit message, _safe -> _len]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
Before there might have been as little as one single byte left which
would result in 3 bytes of blob_attr->id_len being out of bounds.
Acked-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Tobias Schramm <tobleminer@gmail.com>
[line wrapped < 72 chars]
Signed-off-by: Petr Štetiar <ynezz@true.cz>
This adds support for double floating point type to make it more JSON
compatible. For type checking it also adds a stub BLOB_ATTR_DOUBLE type.
If necessary, the accessor functions for blob can be added later
Signed-off-by: André Gaul <andre@gaul.io>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
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>
This primarily helps with simplifying the ubus APIs.
blobmsg header presence is indicated by the BLOB_ATTR_EXTENDED bit in
the id_len field.
This changes the format ABI, but not the API.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
