2 * blob.c - uci <-> blobmsg conversion layer
3 * Copyright (C) 2012-2013 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
18 #include <libubox/blobmsg.h>
23 uci_attr_to_blob(struct blob_buf *b, const char *str,
24 const char *name, enum blobmsg_type type)
31 case BLOBMSG_TYPE_STRING:
32 blobmsg_add_string(b, name, str);
34 case BLOBMSG_TYPE_BOOL:
35 if (!strcmp(str, "true") || !strcmp(str, "1"))
37 else if (!strcmp(str, "false") || !strcmp(str, "0"))
42 blobmsg_add_u8(b, name, intval);
44 case BLOBMSG_TYPE_INT32:
45 intval = strtol(str, &err, 0);
49 blobmsg_add_u32(b, name, intval);
51 case BLOBMSG_TYPE_INT64:
52 llval = strtoll(str, &err, 0);
56 blobmsg_add_u64(b, name, llval);
65 uci_array_to_blob(struct blob_buf *b, struct uci_option *o,
66 enum blobmsg_type type)
68 struct uci_element *e;
69 char *str, *next, *word;
71 if (o->type == UCI_TYPE_LIST) {
72 uci_foreach_element(&o->v.list, e) {
73 uci_attr_to_blob(b, e->name, NULL, type);
78 str = strdup(o->v.string);
81 while ((word = strsep(&next, " \t")) != NULL) {
85 uci_attr_to_blob(b, word, NULL, type);
92 __uci_element_to_blob(struct blob_buf *b, struct uci_element *e,
93 const struct uci_blob_param_list *p)
95 const struct blobmsg_policy *attr = NULL;
96 struct uci_option *o = uci_to_option(e);
97 unsigned int types = 0;
101 for (i = 0; i < p->n_params; i++) {
102 attr = &p->params[i];
104 if (strcmp(attr->name, e->name) != 0)
107 if (attr->type > BLOBMSG_TYPE_LAST)
110 if (types & (1 << attr->type))
113 types |= 1 << attr->type;
115 if (attr->type == BLOBMSG_TYPE_ARRAY) {
116 int element_type = 0;
119 element_type = p->info[i].type;
122 element_type = BLOBMSG_TYPE_STRING;
124 array = blobmsg_open_array(b, attr->name);
125 uci_array_to_blob(b, o, element_type);
126 blobmsg_close_array(b, array);
131 if (o->type == UCI_TYPE_LIST)
134 ret += uci_attr_to_blob(b, o->v.string, attr->name, attr->type);
140 __uci_to_blob(struct blob_buf *b, struct uci_section *s,
141 const struct uci_blob_param_list *p)
143 struct uci_element *e;
146 uci_foreach_element(&s->options, e)
147 ret += __uci_element_to_blob(b, e, p);
153 uci_to_blob(struct blob_buf *b, struct uci_section *s,
154 const struct uci_blob_param_list *p)
159 ret += __uci_to_blob(b, s, p);
160 for (i = 0; i < p->n_next; i++)
161 ret += uci_to_blob(b, s, p->next[i]);
167 uci_blob_diff(struct blob_attr **tb1, struct blob_attr **tb2,
168 const struct uci_blob_param_list *config, unsigned long *diff)
173 for (i = 0; i < config->n_params; i++) {
174 if (!tb1[i] && !tb2[i])
177 if (!!tb1[i] != !!tb2[i])
180 if (blob_len(tb1[i]) != blob_len(tb2[i]))
183 if (memcmp(tb1[i], tb2[i], blob_raw_len(tb1[i])) != 0)
191 bitfield_set(diff, i);
201 __uci_blob_check_equal(struct blob_attr *c1, struct blob_attr *c2,
202 const struct uci_blob_param_list *config)
204 struct blob_attr **tb1, **tb2;
212 tb1 = alloca(config->n_params * sizeof(struct blob_attr *));
213 blobmsg_parse(config->params, config->n_params, tb1,
214 blob_data(c1), blob_len(c1));
216 tb2 = alloca(config->n_params * sizeof(struct blob_attr *));
217 blobmsg_parse(config->params, config->n_params, tb2,
218 blob_data(c2), blob_len(c2));
220 return !uci_blob_diff(tb1, tb2, config, NULL);
224 uci_blob_check_equal(struct blob_attr *c1, struct blob_attr *c2,
225 const struct uci_blob_param_list *config)
229 if (!__uci_blob_check_equal(c1, c2, config))
232 for (i = 0; i < config->n_next; i++) {
233 if (!__uci_blob_check_equal(c1, c2, config->next[i]))