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blobmsg: add blobmsg_check_array, which returns the size of the array

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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
This commit is contained in:
Felix Fietkau 2014-07-15 10:51:09 +02:00
parent fd5b522ce6
commit 7ba1f8acd8
2 changed files with 23 additions and 6 deletions
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20
blobmsg.c
View file

@ -62,11 +62,12 @@ bool blobmsg_check_attr(const struct blob_attr *attr, bool name)
return blob_check_type(data, len, blob_type[id]);
}
bool blobmsg_check_attr_list(const struct blob_attr *attr, int type)
int blobmsg_check_array(const struct blob_attr *attr, int type)
{
struct blob_attr *cur;
bool name;
int rem;
int size = 0;
switch (blobmsg_type(attr)) {
case BLOBMSG_TYPE_TABLE:
@ -76,18 +77,25 @@ bool blobmsg_check_attr_list(const struct blob_attr *attr, int type)
name = false;
break;
default:
return false;
return -1;
}
blobmsg_for_each_attr(cur, attr, rem) {
if (blobmsg_type(cur) != type)
return false;
if (type != BLOBMSG_TYPE_UNSPEC && blobmsg_type(cur) != type)
return -1;
if (!blobmsg_check_attr(cur, name))
return false;
return -1;
size++;
}
return true;
return size;
}
bool blobmsg_check_attr_list(const struct blob_attr *attr, int type)
{
return blobmsg_check_array(attr, type) >= 0;
}
int blobmsg_parse_array(const struct blobmsg_policy *policy, int policy_len,

9
blobmsg.h
View file

@ -90,6 +90,15 @@ static inline int blobmsg_len(const struct blob_attr *attr)
bool blobmsg_check_attr(const struct blob_attr *attr, bool name);
bool blobmsg_check_attr_list(const struct blob_attr *attr, int type);
/*
* blobmsg_check_array: validate array/table and return size
*
* Checks if all elements of an array or table are valid and have
* the specified type. Returns the number of elements in the array
*/
int blobmsg_check_array(const struct blob_attr *attr, int type);
int blobmsg_parse(const struct blobmsg_policy *policy, int policy_len,
struct blob_attr **tb, void *data, unsigned int len);
int blobmsg_parse_array(const struct blobmsg_policy *policy, int policy_len,