#include "blobmsg.h"
+struct strbuf {
+ int len;
+ int pos;
+ char *buf;
+};
+
+static bool blobmsg_puts(struct strbuf *s, const char *c, int len)
+{
+ if (len <= 0)
+ return true;
+
+ if (s->pos + len >= s->len) {
+ s->len += 16;
+ s->buf = realloc(s->buf, s->len);
+ if (!s->buf)
+ return false;
+ }
+ memcpy(s->buf + s->pos, c, len);
+ s->pos += len;
+ return true;
+}
+
+static void blobmsg_format_string(struct strbuf *s, const char *str)
+{
+ const char *p, *last = str, *end = str + strlen(str);
+ char buf[8] = "\\u00";
+
+ blobmsg_puts(s, "\"", 1);
+ for (p = str; *p; p++) {
+ char escape = '\0';
+ int len;
+
+ switch(*p) {
+ case '\b':
+ escape = 'b';
+ break;
+ case '\n':
+ escape = 'n';
+ break;
+ case '\t':
+ escape = 't';
+ break;
+ case '\r':
+ escape = 'r';
+ break;
+ case '"':
+ case '\\':
+ case '/':
+ escape = *p;
+ break;
+ default:
+ if (*p < ' ')
+ escape = 'u';
+ break;
+ }
+
+ if (!escape)
+ continue;
+
+ if (p > last)
+ blobmsg_puts(s, last, p - last);
+ last = p + 1;
+ buf[1] = escape;
+
+ if (escape == 'u') {
+ sprintf(buf + 4, "%02x", (unsigned char) *p);
+ len = 4;
+ } else {
+ len = 2;
+ }
+ blobmsg_puts(s, buf, len);
+ }
+
+ blobmsg_puts(s, last, end - last);
+ blobmsg_puts(s, "\"", 1);
+}
+
+static void blobmsg_format_json_list(struct strbuf *s, struct blob_attr *attr, int len, bool array);
+
+static void blobmsg_format_element(struct strbuf *s, struct blob_attr *attr, bool array, bool head)
+{
+ char buf[32];
+ void *data;
+ int len;
+
+ if (!array && blobmsg_name(attr)[0]) {
+ blobmsg_format_string(s, blobmsg_name(attr));
+ blobmsg_puts(s, ":", 1);
+ }
+ if (head) {
+ data = blob_data(attr);
+ len = blob_len(attr);
+ } else {
+ data = blobmsg_data(attr);
+ len = blobmsg_data_len(attr);
+ }
+
+ switch(blob_id(attr)) {
+ case BLOBMSG_TYPE_INT8:
+ sprintf(buf, "%d", *(uint8_t *)data);
+ break;
+ case BLOBMSG_TYPE_INT16:
+ sprintf(buf, "%d", *(uint16_t *)data);
+ break;
+ case BLOBMSG_TYPE_INT32:
+ sprintf(buf, "%d", *(uint32_t *)data);
+ break;
+ case BLOBMSG_TYPE_INT64:
+ sprintf(buf, "%lld", *(uint64_t *)data);
+ break;
+ case BLOBMSG_TYPE_STRING:
+ blobmsg_format_string(s, data);
+ return;
+ case BLOBMSG_TYPE_ARRAY:
+ blobmsg_format_json_list(s, data, len, true);
+ return;
+ case BLOBMSG_TYPE_TABLE:
+ blobmsg_format_json_list(s, data, len, false);
+ return;
+ }
+ blobmsg_puts(s, buf, strlen(buf));
+}
+
+static void blobmsg_format_json_list(struct strbuf *s, struct blob_attr *attr, int len, bool array)
+{
+ struct blob_attr *pos;
+ bool first = true;
+ int rem = len;
+
+ blobmsg_puts(s, (array ? "[ " : "{ "), 2);
+ __blob_for_each_attr(pos, attr, rem) {
+ if (!first)
+ blobmsg_puts(s, ", ", 2);
+
+ blobmsg_format_element(s, pos, array, false);
+ first = false;
+ }
+ blobmsg_puts(s, (array ? " ]" : " }"), 2);
+}
+
+char *blobmsg_format_json(struct blob_attr *attr, bool list)
+{
+ struct strbuf s;
+
+ s.len = blob_len(attr);
+ s.buf = malloc(s.len);
+ s.pos = 0;
+
+ if (list)
+ blobmsg_format_json_list(&s, blob_data(attr), blob_len(attr), false);
+ else
+ blobmsg_format_element(&s, attr, false, false);
+
+ if (!s.len)
+ return NULL;
+
+ s.buf = realloc(s.buf, s.pos + 1);
+ return s.buf;
+}
+
+static const int blob_type[__BLOBMSG_TYPE_LAST] = {
+ [BLOBMSG_TYPE_INT8] = BLOB_ATTR_INT8,
+ [BLOBMSG_TYPE_INT16] = BLOB_ATTR_INT16,
+ [BLOBMSG_TYPE_INT32] = BLOB_ATTR_INT32,
+ [BLOBMSG_TYPE_INT64] = BLOB_ATTR_INT64,
+ [BLOBMSG_TYPE_STRING] = BLOB_ATTR_STRING,
+};
+
bool blobmsg_check_attr(const struct blob_attr *attr, bool name)
{
const struct blobmsg_hdr *hdr;
+ const char *data;
+ int id, len;
if (blob_len(attr) < sizeof(struct blobmsg_hdr))
return false;
if (hdr->name[hdr->namelen] != 0)
return false;
- return true;
+ id = blob_id(attr);
+ len = blobmsg_data_len(attr);
+ data = blobmsg_data(attr);
+
+ if (!id || id > BLOBMSG_TYPE_LAST)
+ return false;
+
+ if (!blob_type[id])
+ return true;
+
+ return blob_check_type(data, len, blob_type[id]);
}
int blobmsg_parse(const struct blobmsg_policy *policy, int policy_len,
struct blobmsg_hdr *hdr;
int attrlen, namelen;
- if (blob_id(buf->head) == BLOBMSG_TYPE_ARRAY && !name) {
- attr = blob_new(buf, type, payload_len);
- *data = blob_data(attr);
- return attr;
- }
-
- if (blob_id(buf->head) != BLOBMSG_TYPE_TABLE || !name)
- return NULL;
+ if (!name)
+ name = "";
namelen = strlen(name);
attrlen = blobmsg_hdrlen(namelen) + payload_len;
unsigned long offset = attr_to_offset(buf, buf->head);
void *data;
- if (blob_id(head) == BLOBMSG_TYPE_ARRAY && !name)
- return blob_nest_start(buf, type);
+ if (!name)
+ name = "";
- if (blob_id(head) == BLOBMSG_TYPE_TABLE && name) {
- head = blobmsg_new(buf, type, name, 0, &data);
- blob_set_raw_len(buf->head, blob_pad_len(buf->head) - blobmsg_hdrlen(strlen(name)));
- buf->head = head;
- return (void *)offset;
- }
+ head = blobmsg_new(buf, type, name, 0, &data);
+ blob_set_raw_len(buf->head, blob_pad_len(buf->head) - blobmsg_hdrlen(strlen(name)));
+ buf->head = head;
+ return (void *)offset;
+}
+
+void *
+blobmsg_alloc_string_buffer(struct blob_buf *buf, const char *name, int maxlen)
+{
+ struct blob_attr *attr;
+ void *data_dest;
+
+ attr = blobmsg_new(buf, BLOBMSG_TYPE_STRING, name, maxlen, &data_dest);
+ if (!attr)
+ return NULL;
+
+ data_dest = blobmsg_data(attr);
+ blob_set_raw_len(buf->head, blob_pad_len(buf->head) - blob_raw_len(attr));
+ blob_set_raw_len(attr, blob_raw_len(attr) - maxlen);
+
+ return data_dest;
+}
+
+void
+blobmsg_add_string_buffer(struct blob_buf *buf)
+{
+ struct blob_attr *attr;
+ int len, attrlen;
+
+ attr = blob_next(buf->head);
+ len = strlen(blobmsg_data(attr)) + 1;
- return NULL;
+ attrlen = blob_raw_len(attr) + len;
+ blob_set_raw_len(attr, attrlen);
+ blob_set_raw_len(buf->head, blob_raw_len(buf->head) + attrlen);
}
int
projects / project / libubox.git / blobdiff