218 lines
6 KiB
C
218 lines
6 KiB
C
/*
|
|
* Copyright (C) 2010-2012 Felix Fietkau <nbd@openwrt.org>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
#ifndef __BLOBMSG_H
|
|
#define __BLOBMSG_H
|
|
|
|
#include <stdarg.h>
|
|
#include "blob.h"
|
|
|
|
#define BLOBMSG_ALIGN 2
|
|
#define BLOBMSG_PADDING(len) (((len) + (1 << BLOBMSG_ALIGN) - 1) & ~((1 << BLOBMSG_ALIGN) - 1))
|
|
|
|
enum blobmsg_type {
|
|
BLOBMSG_TYPE_UNSPEC,
|
|
BLOBMSG_TYPE_ARRAY,
|
|
BLOBMSG_TYPE_TABLE,
|
|
BLOBMSG_TYPE_STRING,
|
|
BLOBMSG_TYPE_INT64,
|
|
BLOBMSG_TYPE_INT32,
|
|
BLOBMSG_TYPE_INT16,
|
|
BLOBMSG_TYPE_INT8,
|
|
__BLOBMSG_TYPE_LAST,
|
|
BLOBMSG_TYPE_LAST = __BLOBMSG_TYPE_LAST - 1,
|
|
BLOBMSG_TYPE_BOOL = BLOBMSG_TYPE_INT8,
|
|
};
|
|
|
|
struct blobmsg_hdr {
|
|
uint16_t namelen;
|
|
uint8_t name[];
|
|
} __packed;
|
|
|
|
struct blobmsg_policy {
|
|
const char *name;
|
|
enum blobmsg_type type;
|
|
};
|
|
|
|
static inline int blobmsg_hdrlen(int namelen)
|
|
{
|
|
return BLOBMSG_PADDING(sizeof(struct blobmsg_hdr) + namelen + 1);
|
|
}
|
|
|
|
static inline const char *blobmsg_name(const struct blob_attr *attr)
|
|
{
|
|
struct blobmsg_hdr *hdr = (struct blobmsg_hdr *) blob_data(attr);
|
|
return (const char *) hdr->name;
|
|
}
|
|
|
|
static inline int blobmsg_type(const struct blob_attr *attr)
|
|
{
|
|
return blob_id(attr);
|
|
}
|
|
|
|
static inline void *blobmsg_data(const struct blob_attr *attr)
|
|
{
|
|
struct blobmsg_hdr *hdr = (struct blobmsg_hdr *) blob_data(attr);
|
|
return (char *) hdr + blobmsg_hdrlen(be16_to_cpu(hdr->namelen));
|
|
}
|
|
|
|
static inline int blobmsg_data_len(const struct blob_attr *attr)
|
|
{
|
|
uint8_t *start, *end;
|
|
|
|
start = (uint8_t *) blob_data(attr);
|
|
end = (uint8_t *) blobmsg_data(attr);
|
|
|
|
return blob_len(attr) - (end - start);
|
|
}
|
|
|
|
static inline int blobmsg_len(const struct blob_attr *attr)
|
|
{
|
|
return blobmsg_data_len(attr);
|
|
}
|
|
|
|
bool blobmsg_check_attr(const struct blob_attr *attr, bool name);
|
|
bool blobmsg_check_attr_list(const struct blob_attr *attr, int type);
|
|
int blobmsg_parse(const struct blobmsg_policy *policy, int policy_len,
|
|
struct blob_attr **tb, void *data, int len);
|
|
int blobmsg_parse_array(const struct blobmsg_policy *policy, int policy_len,
|
|
struct blob_attr **tb, void *data, int len);
|
|
|
|
int blobmsg_add_field(struct blob_buf *buf, int type, const char *name,
|
|
const void *data, int len);
|
|
|
|
static inline int
|
|
blobmsg_add_u8(struct blob_buf *buf, const char *name, uint8_t val)
|
|
{
|
|
return blobmsg_add_field(buf, BLOBMSG_TYPE_INT8, name, &val, 1);
|
|
}
|
|
|
|
static inline int
|
|
blobmsg_add_u16(struct blob_buf *buf, const char *name, uint16_t val)
|
|
{
|
|
val = cpu_to_be16(val);
|
|
return blobmsg_add_field(buf, BLOBMSG_TYPE_INT16, name, &val, 2);
|
|
}
|
|
|
|
static inline int
|
|
blobmsg_add_u32(struct blob_buf *buf, const char *name, uint32_t val)
|
|
{
|
|
val = cpu_to_be32(val);
|
|
return blobmsg_add_field(buf, BLOBMSG_TYPE_INT32, name, &val, 4);
|
|
}
|
|
|
|
static inline int
|
|
blobmsg_add_u64(struct blob_buf *buf, const char *name, uint64_t val)
|
|
{
|
|
val = cpu_to_be64(val);
|
|
return blobmsg_add_field(buf, BLOBMSG_TYPE_INT64, name, &val, 8);
|
|
}
|
|
|
|
static inline int
|
|
blobmsg_add_string(struct blob_buf *buf, const char *name, const char *string)
|
|
{
|
|
return blobmsg_add_field(buf, BLOBMSG_TYPE_STRING, name, string, strlen(string) + 1);
|
|
}
|
|
|
|
static inline int
|
|
blobmsg_add_blob(struct blob_buf *buf, struct blob_attr *attr)
|
|
{
|
|
return blobmsg_add_field(buf, blobmsg_type(attr), blobmsg_name(attr),
|
|
blobmsg_data(attr), blobmsg_data_len(attr));
|
|
}
|
|
|
|
void *blobmsg_open_nested(struct blob_buf *buf, const char *name, bool array);
|
|
|
|
static inline void *
|
|
blobmsg_open_array(struct blob_buf *buf, const char *name)
|
|
{
|
|
return blobmsg_open_nested(buf, name, true);
|
|
}
|
|
|
|
static inline void *
|
|
blobmsg_open_table(struct blob_buf *buf, const char *name)
|
|
{
|
|
return blobmsg_open_nested(buf, name, false);
|
|
}
|
|
|
|
static inline void
|
|
blobmsg_close_array(struct blob_buf *buf, void *cookie)
|
|
{
|
|
blob_nest_end(buf, cookie);
|
|
}
|
|
|
|
static inline void
|
|
blobmsg_close_table(struct blob_buf *buf, void *cookie)
|
|
{
|
|
blob_nest_end(buf, cookie);
|
|
}
|
|
|
|
static inline int blobmsg_buf_init(struct blob_buf *buf)
|
|
{
|
|
return blob_buf_init(buf, BLOBMSG_TYPE_TABLE);
|
|
}
|
|
|
|
static inline uint8_t blobmsg_get_u8(struct blob_attr *attr)
|
|
{
|
|
return *(uint8_t *) blobmsg_data(attr);
|
|
}
|
|
|
|
static inline bool blobmsg_get_bool(struct blob_attr *attr)
|
|
{
|
|
return *(uint8_t *) blobmsg_data(attr);
|
|
}
|
|
|
|
static inline uint16_t blobmsg_get_u16(struct blob_attr *attr)
|
|
{
|
|
return be16_to_cpu(*(uint16_t *) blobmsg_data(attr));
|
|
}
|
|
|
|
static inline uint32_t blobmsg_get_u32(struct blob_attr *attr)
|
|
{
|
|
return be32_to_cpu(*(uint32_t *) blobmsg_data(attr));
|
|
}
|
|
|
|
static inline uint64_t blobmsg_get_u64(struct blob_attr *attr)
|
|
{
|
|
uint32_t *ptr = blobmsg_data(attr);
|
|
uint64_t tmp = ((uint64_t) be32_to_cpu(ptr[0])) << 32;
|
|
tmp |= be32_to_cpu(ptr[1]);
|
|
return tmp;
|
|
}
|
|
|
|
static inline char *blobmsg_get_string(struct blob_attr *attr)
|
|
{
|
|
return blobmsg_data(attr);
|
|
}
|
|
|
|
void *blobmsg_alloc_string_buffer(struct blob_buf *buf, const char *name, int maxlen);
|
|
void *blobmsg_realloc_string_buffer(struct blob_buf *buf, int maxlen);
|
|
void blobmsg_add_string_buffer(struct blob_buf *buf);
|
|
|
|
void blobmsg_vprintf(struct blob_buf *buf, const char *name, const char *format, va_list arg);
|
|
void blobmsg_printf(struct blob_buf *buf, const char *name, const char *format, ...)
|
|
__attribute__((format(printf, 3, 4)));
|
|
|
|
|
|
/* blobmsg to json formatting */
|
|
|
|
#define blobmsg_for_each_attr(pos, attr, rem) \
|
|
for (rem = attr ? blobmsg_data_len(attr) : 0, \
|
|
pos = attr ? blobmsg_data(attr) : 0; \
|
|
rem > 0 && (blob_pad_len(pos) <= rem) && \
|
|
(blob_pad_len(pos) >= sizeof(struct blob_attr)); \
|
|
rem -= blob_pad_len(pos), pos = blob_next(pos))
|
|
|
|
#endif
|