2 * rpcd - UBUS RPC server
4 * Copyright (C) 2013 Jo-Philipp Wich <jow@openwrt.org>
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19 #include <libubox/blobmsg.h>
20 #include <libubox/blobmsg_json.h>
23 #include <rpcd/session.h>
25 static struct blob_buf buf;
26 static struct uci_context *cursor;
38 static const struct blobmsg_policy rpc_uci_get_policy[__RPC_G_MAX] = {
39 [RPC_G_CONFIG] = { .name = "config", .type = BLOBMSG_TYPE_STRING },
40 [RPC_G_SECTION] = { .name = "section", .type = BLOBMSG_TYPE_STRING },
41 [RPC_G_OPTION] = { .name = "option", .type = BLOBMSG_TYPE_STRING },
42 [RPC_G_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
43 [RPC_G_MATCH] = { .name = "match", .type = BLOBMSG_TYPE_TABLE },
44 [RPC_G_SESSION] = { .name = "ubus_rpc_session",
45 .type = BLOBMSG_TYPE_STRING },
57 static const struct blobmsg_policy rpc_uci_add_policy[__RPC_A_MAX] = {
58 [RPC_A_CONFIG] = { .name = "config", .type = BLOBMSG_TYPE_STRING },
59 [RPC_A_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
60 [RPC_A_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
61 [RPC_A_VALUES] = { .name = "values", .type = BLOBMSG_TYPE_TABLE },
62 [RPC_A_SESSION] = { .name = "ubus_rpc_session",
63 .type = BLOBMSG_TYPE_STRING },
76 static const struct blobmsg_policy rpc_uci_set_policy[__RPC_S_MAX] = {
77 [RPC_S_CONFIG] = { .name = "config", .type = BLOBMSG_TYPE_STRING },
78 [RPC_S_SECTION] = { .name = "section", .type = BLOBMSG_TYPE_STRING },
79 [RPC_S_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
80 [RPC_S_MATCH] = { .name = "match", .type = BLOBMSG_TYPE_TABLE },
81 [RPC_S_VALUES] = { .name = "values", .type = BLOBMSG_TYPE_TABLE },
82 [RPC_S_SESSION] = { .name = "ubus_rpc_session",
83 .type = BLOBMSG_TYPE_STRING },
97 static const struct blobmsg_policy rpc_uci_delete_policy[__RPC_D_MAX] = {
98 [RPC_D_CONFIG] = { .name = "config", .type = BLOBMSG_TYPE_STRING },
99 [RPC_D_SECTION] = { .name = "section", .type = BLOBMSG_TYPE_STRING },
100 [RPC_D_TYPE] = { .name = "type", .type = BLOBMSG_TYPE_STRING },
101 [RPC_D_MATCH] = { .name = "match", .type = BLOBMSG_TYPE_TABLE },
102 [RPC_D_OPTION] = { .name = "option", .type = BLOBMSG_TYPE_STRING },
103 [RPC_D_OPTIONS] = { .name = "options", .type = BLOBMSG_TYPE_ARRAY },
104 [RPC_D_SESSION] = { .name = "ubus_rpc_session",
105 .type = BLOBMSG_TYPE_STRING },
117 static const struct blobmsg_policy rpc_uci_rename_policy[__RPC_R_MAX] = {
118 [RPC_R_CONFIG] = { .name = "config", .type = BLOBMSG_TYPE_STRING },
119 [RPC_R_SECTION] = { .name = "section", .type = BLOBMSG_TYPE_STRING },
120 [RPC_R_OPTION] = { .name = "option", .type = BLOBMSG_TYPE_STRING },
121 [RPC_R_NAME] = { .name = "name", .type = BLOBMSG_TYPE_STRING },
122 [RPC_R_SESSION] = { .name = "ubus_rpc_session",
123 .type = BLOBMSG_TYPE_STRING },
133 static const struct blobmsg_policy rpc_uci_order_policy[__RPC_O_MAX] = {
134 [RPC_O_CONFIG] = { .name = "config", .type = BLOBMSG_TYPE_STRING },
135 [RPC_O_SECTIONS] = { .name = "sections", .type = BLOBMSG_TYPE_ARRAY },
136 [RPC_O_SESSION] = { .name = "ubus_rpc_session",
137 .type = BLOBMSG_TYPE_STRING },
146 static const struct blobmsg_policy rpc_uci_config_policy[__RPC_C_MAX] = {
147 [RPC_C_CONFIG] = { .name = "config", .type = BLOBMSG_TYPE_STRING },
148 [RPC_C_SESSION] = { .name = "ubus_rpc_session",
149 .type = BLOBMSG_TYPE_STRING },
153 * Turn uci error state into ubus return code
161 return UBUS_STATUS_OK;
164 return UBUS_STATUS_INVALID_ARGUMENT;
166 case UCI_ERR_NOTFOUND:
167 return UBUS_STATUS_NOT_FOUND;
170 return UBUS_STATUS_UNKNOWN_ERROR;
175 * Setup per-session delta save directory. If the passed "sid" blob attribute
176 * pointer is NULL then the precedure was not invoked through the ubus-rpc so
177 * we do not perform session isolation and use the default save directory.
180 rpc_uci_set_savedir(struct blob_attr *sid)
186 uci_set_savedir(cursor, "/tmp/.uci");
190 snprintf(path, sizeof(path) - 1,
191 RPC_UCI_SAVEDIR_PREFIX "%s", blobmsg_get_string(sid));
193 uci_set_savedir(cursor, path);
197 * Test read access to given config. If the passed "sid" blob attribute pointer
198 * is NULL then the precedure was not invoked through the ubus-rpc so we do not
199 * perform access control and always assume true.
202 rpc_uci_read_access(struct blob_attr *sid, struct blob_attr *config)
204 rpc_uci_set_savedir(sid);
209 return rpc_session_access(blobmsg_data(sid), "uci",
210 blobmsg_data(config), "read");
214 * Test write access to given config. If the passed "sid" blob attribute pointer
215 * is NULL then the precedure was not invoked through the ubus-rpc so we do not
216 * perform access control and always assume true.
219 rpc_uci_write_access(struct blob_attr *sid, struct blob_attr *config)
221 rpc_uci_set_savedir(sid);
226 return rpc_session_access(blobmsg_data(sid), "uci",
227 blobmsg_data(config), "write");
231 * Format applicable blob value as string and place a pointer to the string
232 * buffer in "p". Uses a static string buffer.
235 rpc_uci_format_blob(struct blob_attr *v, const char **p)
241 switch (blobmsg_type(v))
243 case BLOBMSG_TYPE_STRING:
244 if (blobmsg_data_len(v) > 1)
245 *p = blobmsg_data(v);
248 case BLOBMSG_TYPE_INT64:
249 snprintf(buf, sizeof(buf), "%"PRIu64, blobmsg_get_u64(v));
253 case BLOBMSG_TYPE_INT32:
254 snprintf(buf, sizeof(buf), "%u", blobmsg_get_u32(v));
258 case BLOBMSG_TYPE_INT16:
259 snprintf(buf, sizeof(buf), "%u", blobmsg_get_u16(v));
263 case BLOBMSG_TYPE_INT8:
264 snprintf(buf, sizeof(buf), "%u", !!blobmsg_get_u8(v));
276 * Lookup the given uci_ptr and enable extended lookup format if the .section
277 * value of the uci_ptr looks like extended syntax. Uses an internal copy
278 * of the given uci_ptr to perform the lookup as failing extended section
279 * lookup operations in libuci will zero our the uci_ptr struct.
280 * Copies the internal uci_ptr back to given the uci_ptr on success.
283 rpc_uci_lookup(struct uci_ptr *ptr)
286 struct uci_ptr lookup = *ptr;
288 if (!lookup.s && lookup.section && *lookup.section == '@')
289 lookup.flags |= UCI_LOOKUP_EXTENDED;
291 rv = uci_lookup_ptr(cursor, &lookup, NULL, true);
300 * Checks whether the given uci_option object matches the given string value.
301 * 1) If the uci_option is of type list, check whether any of the list elements
302 * equals to the given string
303 * 2) If the uci_option is of type string, parse it into space separated tokens
304 * and check if any of the tokens equals to the given string.
305 * Returns true if a list element or token matched the given string.
308 rpc_uci_match_option(struct uci_option *o, const char *cmp)
310 struct uci_element *e;
313 if (o->type == UCI_TYPE_LIST)
315 uci_foreach_element(&o->v.list, e)
316 if (e->name && !strcmp(e->name, cmp))
325 s = strdup(o->v.string);
330 for (p = strtok(s, " \t"); p; p = strtok(NULL, " \t"))
344 * Checks whether the given uci_section matches the type and value blob attrs.
345 * 1) Returns false if "type" is given and the section type does not match
346 * the value specified in the "type" string blob attribute, else continue.
347 * 2) Tests whether any key in the "matches" table blob attribute exists in
348 * the given uci_section and whether each value is contained in the
349 * corresponding uci option value (see rpc_uci_match_option()).
350 * 3) A missing or empty "matches" table blob attribute is always considered
352 * Returns true if "type" matches or is NULL and "matches" matches or is NULL.
355 rpc_uci_match_section(struct uci_section *s,
356 struct blob_attr *type, struct blob_attr *matches)
358 struct uci_element *e;
359 struct blob_attr *cur;
365 if (type && strcmp(s->type, blobmsg_data(type)))
371 blobmsg_for_each_attr(cur, matches, rem)
373 if (!rpc_uci_format_blob(cur, &cmp))
376 uci_foreach_element(&s->options, e)
378 if (strcmp(e->name, blobmsg_name(cur)))
381 if (!rpc_uci_match_option(uci_to_option(e), cmp))
390 return (empty || match);
394 * Dump the given uci_option value into the global blobmsg buffer and use
395 * given "name" as key.
396 * 1) If the uci_option is of type list, put a table into the blob buffer and
397 * add each list item as string to it.
398 * 2) If the uci_option is of type string, put its value directly into the blob
402 rpc_uci_dump_option(struct uci_option *o, const char *name)
405 struct uci_element *e;
409 case UCI_TYPE_STRING:
410 blobmsg_add_string(&buf, name, o->v.string);
414 c = blobmsg_open_array(&buf, name);
416 uci_foreach_element(&o->v.list, e)
417 blobmsg_add_string(&buf, NULL, e->name);
419 blobmsg_close_array(&buf, c);
428 * Dump the given uci_section object into the global blobmsg buffer and use
429 * given "name" as key.
430 * Puts a table into the blob buffer and puts each section option member value
431 * as value into the table using the option name as key.
432 * Adds three special keys ".anonymous", ".type" and ".name" which specify the
433 * corresponding section properties.
436 rpc_uci_dump_section(struct uci_section *s, const char *name, int index)
439 struct uci_option *o;
440 struct uci_element *e;
442 c = blobmsg_open_table(&buf, name);
444 blobmsg_add_u8(&buf, ".anonymous", s->anonymous);
445 blobmsg_add_string(&buf, ".type", s->type);
446 blobmsg_add_string(&buf, ".name", s->e.name);
449 blobmsg_add_u32(&buf, ".index", index);
451 uci_foreach_element(&s->options, e)
453 o = uci_to_option(e);
454 rpc_uci_dump_option(o, o->e.name);
457 blobmsg_close_table(&buf, c);
461 * Dump the given uci_package object into the global blobmsg buffer and use
462 * given "name" as key.
463 * Puts a table into the blob buffer and puts each package section member as
464 * value into the table using the section name as key.
465 * Only dumps sections matching the given "type" and "matches", see explaination
466 * of rpc_uci_match_section() for details.
469 rpc_uci_dump_package(struct uci_package *p, const char *name,
470 struct blob_attr *type, struct blob_attr *matches)
473 struct uci_element *e;
476 c = blobmsg_open_table(&buf, name);
478 uci_foreach_element(&p->sections, e)
482 if (!rpc_uci_match_section(uci_to_section(e), type, matches))
485 rpc_uci_dump_section(uci_to_section(e), e->name, i);
488 blobmsg_close_table(&buf, c);
493 rpc_uci_get(struct ubus_context *ctx, struct ubus_object *obj,
494 struct ubus_request_data *req, const char *method,
495 struct blob_attr *msg)
497 struct blob_attr *tb[__RPC_G_MAX];
498 struct uci_package *p = NULL;
499 struct uci_ptr ptr = { 0 };
501 blobmsg_parse(rpc_uci_get_policy, __RPC_G_MAX, tb,
502 blob_data(msg), blob_len(msg));
504 if (!tb[RPC_G_CONFIG])
505 return UBUS_STATUS_INVALID_ARGUMENT;
507 if (!rpc_uci_read_access(tb[RPC_G_SESSION], tb[RPC_G_CONFIG]))
508 return UBUS_STATUS_PERMISSION_DENIED;
510 ptr.package = blobmsg_data(tb[RPC_G_CONFIG]);
511 uci_load(cursor, ptr.package, &p);
516 if (tb[RPC_G_SECTION])
518 ptr.section = blobmsg_data(tb[RPC_G_SECTION]);
520 if (tb[RPC_G_OPTION])
521 ptr.option = blobmsg_data(tb[RPC_G_OPTION]);
524 if (rpc_uci_lookup(&ptr) || !(ptr.flags & UCI_LOOKUP_COMPLETE))
527 blob_buf_init(&buf, 0);
529 switch (ptr.last->type)
531 case UCI_TYPE_PACKAGE:
532 rpc_uci_dump_package(ptr.p, "values", tb[RPC_G_TYPE], tb[RPC_G_MATCH]);
535 case UCI_TYPE_SECTION:
536 rpc_uci_dump_section(ptr.s, "values", -1);
539 case UCI_TYPE_OPTION:
540 rpc_uci_dump_option(ptr.o, "value");
547 ubus_send_reply(ctx, req, buf.head);
551 uci_unload(cursor, p);
553 return rpc_uci_status();
557 rpc_uci_add(struct ubus_context *ctx, struct ubus_object *obj,
558 struct ubus_request_data *req, const char *method,
559 struct blob_attr *msg)
561 struct blob_attr *tb[__RPC_A_MAX];
562 struct blob_attr *cur, *elem;
563 struct uci_package *p = NULL;
564 struct uci_section *s;
565 struct uci_ptr ptr = { 0 };
568 blobmsg_parse(rpc_uci_add_policy, __RPC_A_MAX, tb,
569 blob_data(msg), blob_len(msg));
571 if (!tb[RPC_A_CONFIG] || !tb[RPC_A_TYPE])
572 return UBUS_STATUS_INVALID_ARGUMENT;
574 if (!rpc_uci_write_access(tb[RPC_A_SESSION], tb[RPC_A_CONFIG]))
575 return UBUS_STATUS_PERMISSION_DENIED;
577 ptr.package = blobmsg_data(tb[RPC_A_CONFIG]);
579 uci_load(cursor, ptr.package, &p);
584 /* add named section */
587 ptr.section = blobmsg_data(tb[RPC_A_NAME]);
588 ptr.value = blobmsg_data(tb[RPC_A_TYPE]);
591 if (rpc_uci_lookup(&ptr) || uci_set(cursor, &ptr))
595 /* add anon section */
598 if (uci_add_section(cursor, p, blobmsg_data(tb[RPC_A_TYPE]), &s) || !s)
601 ptr.section = s->e.name;
604 if (tb[RPC_A_VALUES])
606 blobmsg_for_each_attr(cur, tb[RPC_A_VALUES], rem)
609 ptr.option = blobmsg_name(cur);
611 if (rpc_uci_lookup(&ptr) || !ptr.s)
614 switch (blobmsg_type(cur))
616 case BLOBMSG_TYPE_ARRAY:
617 blobmsg_for_each_attr(elem, cur, rem2)
618 if (rpc_uci_format_blob(elem, &ptr.value))
619 uci_add_list(cursor, &ptr);
623 if (rpc_uci_format_blob(cur, &ptr.value))
624 uci_set(cursor, &ptr);
632 blob_buf_init(&buf, 0);
633 blobmsg_add_string(&buf, "section", ptr.section);
634 ubus_send_reply(ctx, req, buf.head);
638 uci_unload(cursor, p);
640 return rpc_uci_status();
644 * Turn value from a blob attribute into uci set operation
645 * 1) if the blob is of type array, delete existing option (if any) and
646 * emit uci add_list operations for each element
647 * 2) if the blob is not an array but an option of type list exists,
648 * delete existing list and emit uci set operation for the blob value
649 * 3) in all other cases only emit a set operation if there is no existing
650 * option of if the existing options value differs from the blob value
653 rpc_uci_merge_set(struct blob_attr *opt, struct uci_ptr *ptr)
655 struct blob_attr *cur;
659 ptr->option = blobmsg_name(opt);
661 if (rpc_uci_lookup(ptr) || !ptr->s)
664 if (blobmsg_type(opt) == BLOBMSG_TYPE_ARRAY)
667 uci_delete(cursor, ptr);
669 blobmsg_for_each_attr(cur, opt, rem)
670 if (rpc_uci_format_blob(cur, &ptr->value))
671 uci_add_list(cursor, ptr);
673 else if (ptr->o && ptr->o->type == UCI_TYPE_LIST)
675 uci_delete(cursor, ptr);
677 if (rpc_uci_format_blob(opt, &ptr->value))
678 uci_set(cursor, ptr);
680 else if (rpc_uci_format_blob(opt, &ptr->value))
682 if (!ptr->o || !ptr->o->v.string || strcmp(ptr->o->v.string, ptr->value))
683 uci_set(cursor, ptr);
688 rpc_uci_set(struct ubus_context *ctx, struct ubus_object *obj,
689 struct ubus_request_data *req, const char *method,
690 struct blob_attr *msg)
692 struct blob_attr *tb[__RPC_S_MAX];
693 struct blob_attr *cur;
694 struct uci_package *p = NULL;
695 struct uci_element *e;
696 struct uci_ptr ptr = { 0 };
699 blobmsg_parse(rpc_uci_set_policy, __RPC_S_MAX, tb,
700 blob_data(msg), blob_len(msg));
702 if (!tb[RPC_S_CONFIG] || !tb[RPC_S_VALUES] ||
703 (!tb[RPC_S_SECTION] && !tb[RPC_S_TYPE] && !tb[RPC_S_MATCH]))
704 return UBUS_STATUS_INVALID_ARGUMENT;
706 if (!rpc_uci_write_access(tb[RPC_S_SESSION], tb[RPC_S_CONFIG]))
707 return UBUS_STATUS_PERMISSION_DENIED;
709 ptr.package = blobmsg_data(tb[RPC_S_CONFIG]);
710 uci_load(cursor, ptr.package, &p);
715 if (tb[RPC_S_SECTION])
717 ptr.section = blobmsg_data(tb[RPC_S_SECTION]);
718 blobmsg_for_each_attr(cur, tb[RPC_S_VALUES], rem)
719 rpc_uci_merge_set(cur, &ptr);
723 uci_foreach_element(&p->sections, e)
725 if (!rpc_uci_match_section(uci_to_section(e),
726 tb[RPC_S_TYPE], tb[RPC_S_MATCH]))
730 ptr.section = e->name;
732 blobmsg_for_each_attr(cur, tb[RPC_S_VALUES], rem)
733 rpc_uci_merge_set(cur, &ptr);
741 uci_unload(cursor, p);
743 return rpc_uci_status();
747 * Delete option or section from uci specified by given blob attribute pointer
748 * 1) if the blob is of type array, delete any option named after each element
749 * 2) if the blob is of type string, delete the option named after its value
750 * 3) if the blob is NULL, delete entire section
753 rpc_uci_merge_delete(struct blob_attr *opt, struct uci_ptr *ptr)
755 struct blob_attr *cur;
758 if (rpc_uci_lookup(ptr) || !ptr->s)
766 uci_delete(cursor, ptr);
768 else if (blobmsg_type(opt) == BLOBMSG_TYPE_ARRAY)
770 blobmsg_for_each_attr(cur, opt, rem)
772 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
776 ptr->option = blobmsg_data(cur);
778 if (rpc_uci_lookup(ptr) || !ptr->o)
781 uci_delete(cursor, ptr);
784 else if (blobmsg_type(opt) == BLOBMSG_TYPE_STRING)
787 ptr->option = blobmsg_data(opt);
789 if (rpc_uci_lookup(ptr) || !ptr->o)
792 uci_delete(cursor, ptr);
797 rpc_uci_delete(struct ubus_context *ctx, struct ubus_object *obj,
798 struct ubus_request_data *req, const char *method,
799 struct blob_attr *msg)
801 struct blob_attr *tb[__RPC_D_MAX];
802 struct uci_package *p = NULL;
803 struct uci_element *e, *tmp;
804 struct uci_ptr ptr = { 0 };
806 blobmsg_parse(rpc_uci_delete_policy, __RPC_D_MAX, tb,
807 blob_data(msg), blob_len(msg));
809 if (!tb[RPC_D_CONFIG] ||
810 (!tb[RPC_D_SECTION] && !tb[RPC_D_TYPE] && !tb[RPC_D_MATCH]))
811 return UBUS_STATUS_INVALID_ARGUMENT;
813 if (!rpc_uci_write_access(tb[RPC_D_SESSION], tb[RPC_D_CONFIG]))
814 return UBUS_STATUS_PERMISSION_DENIED;
816 ptr.package = blobmsg_data(tb[RPC_D_CONFIG]);
817 uci_load(cursor, ptr.package, &p);
822 if (tb[RPC_D_SECTION])
824 ptr.section = blobmsg_data(tb[RPC_D_SECTION]);
826 if (tb[RPC_D_OPTIONS])
827 rpc_uci_merge_delete(tb[RPC_D_OPTIONS], &ptr);
829 rpc_uci_merge_delete(tb[RPC_D_OPTION], &ptr);
833 uci_foreach_element_safe(&p->sections, tmp, e)
835 if (!rpc_uci_match_section(uci_to_section(e),
836 tb[RPC_D_TYPE], tb[RPC_D_MATCH]))
840 ptr.section = e->name;
842 if (tb[RPC_D_OPTIONS])
843 rpc_uci_merge_delete(tb[RPC_D_OPTIONS], &ptr);
845 rpc_uci_merge_delete(tb[RPC_D_OPTION], &ptr);
853 uci_unload(cursor, p);
855 return rpc_uci_status();
859 rpc_uci_rename(struct ubus_context *ctx, struct ubus_object *obj,
860 struct ubus_request_data *req, const char *method,
861 struct blob_attr *msg)
863 struct blob_attr *tb[__RPC_R_MAX];
864 struct uci_package *p = NULL;
865 struct uci_ptr ptr = { 0 };
867 blobmsg_parse(rpc_uci_rename_policy, __RPC_R_MAX, tb,
868 blob_data(msg), blob_len(msg));
870 if (!tb[RPC_R_CONFIG] || !tb[RPC_R_SECTION] || !tb[RPC_R_NAME])
871 return UBUS_STATUS_INVALID_ARGUMENT;
873 if (!rpc_uci_write_access(tb[RPC_R_SESSION], tb[RPC_R_CONFIG]))
874 return UBUS_STATUS_PERMISSION_DENIED;
876 ptr.package = blobmsg_data(tb[RPC_R_CONFIG]);
877 ptr.section = blobmsg_data(tb[RPC_R_SECTION]);
878 ptr.value = blobmsg_data(tb[RPC_R_NAME]);
880 if (tb[RPC_R_OPTION])
881 ptr.option = blobmsg_data(tb[RPC_R_OPTION]);
883 uci_load(cursor, ptr.package, &p);
888 if (uci_lookup_ptr(cursor, &ptr, NULL, true))
891 if ((ptr.option && !ptr.o) || !ptr.s)
893 cursor->err = UCI_ERR_NOTFOUND;
897 if (uci_rename(cursor, &ptr))
904 uci_unload(cursor, p);
906 return rpc_uci_status();
910 rpc_uci_order(struct ubus_context *ctx, struct ubus_object *obj,
911 struct ubus_request_data *req, const char *method,
912 struct blob_attr *msg)
914 struct blob_attr *tb[__RPC_O_MAX];
915 struct blob_attr *cur;
916 struct uci_package *p = NULL;
917 struct uci_ptr ptr = { 0 };
920 blobmsg_parse(rpc_uci_order_policy, __RPC_O_MAX, tb,
921 blob_data(msg), blob_len(msg));
923 if (!tb[RPC_O_CONFIG] || !tb[RPC_O_SECTIONS])
924 return UBUS_STATUS_INVALID_ARGUMENT;
926 if (!rpc_uci_write_access(tb[RPC_O_SESSION], tb[RPC_O_CONFIG]))
927 return UBUS_STATUS_PERMISSION_DENIED;
929 ptr.package = blobmsg_data(tb[RPC_O_CONFIG]);
931 uci_load(cursor, ptr.package, &p);
936 blobmsg_for_each_attr(cur, tb[RPC_O_SECTIONS], rem)
938 if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
942 ptr.section = blobmsg_data(cur);
944 if (uci_lookup_ptr(cursor, &ptr, NULL, true) || !ptr.s)
947 uci_reorder_section(cursor, ptr.s, i++);
954 uci_unload(cursor, p);
956 return rpc_uci_status();
960 rpc_uci_dump_change(struct uci_delta *d)
963 const char *types[] = {
964 [UCI_CMD_REORDER] = "order",
965 [UCI_CMD_REMOVE] = "remove",
966 [UCI_CMD_RENAME] = "rename",
967 [UCI_CMD_ADD] = "add",
968 [UCI_CMD_LIST_ADD] = "list-add",
969 [UCI_CMD_LIST_DEL] = "list-del",
970 [UCI_CMD_CHANGE] = "set",
976 c = blobmsg_open_array(&buf, NULL);
978 blobmsg_add_string(&buf, NULL, types[d->cmd]);
979 blobmsg_add_string(&buf, NULL, d->section);
982 blobmsg_add_string(&buf, NULL, d->e.name);
986 if (d->cmd == UCI_CMD_REORDER)
987 blobmsg_add_u32(&buf, NULL, strtoul(d->value, NULL, 10));
989 blobmsg_add_string(&buf, NULL, d->value);
992 blobmsg_close_array(&buf, c);
996 rpc_uci_changes(struct ubus_context *ctx, struct ubus_object *obj,
997 struct ubus_request_data *req, const char *method,
998 struct blob_attr *msg)
1000 struct blob_attr *tb[__RPC_C_MAX];
1001 struct uci_package *p = NULL;
1002 struct uci_element *e;
1005 blobmsg_parse(rpc_uci_config_policy, __RPC_C_MAX, tb,
1006 blob_data(msg), blob_len(msg));
1008 if (!tb[RPC_C_CONFIG])
1009 return UBUS_STATUS_INVALID_ARGUMENT;
1011 if (!rpc_uci_read_access(tb[RPC_C_SESSION], tb[RPC_C_CONFIG]))
1012 return UBUS_STATUS_PERMISSION_DENIED;
1014 uci_load(cursor, blobmsg_data(tb[RPC_C_CONFIG]), &p);
1019 blob_buf_init(&buf, 0);
1020 c = blobmsg_open_array(&buf, "changes");
1022 uci_foreach_element(&p->saved_delta, e)
1023 rpc_uci_dump_change(uci_to_delta(e));
1025 blobmsg_close_array(&buf, c);
1027 ubus_send_reply(ctx, req, buf.head);
1031 uci_unload(cursor, p);
1033 return rpc_uci_status();
1037 rpc_uci_trigger_event(struct ubus_context *ctx, const char *config)
1039 char *pkg = strdup(config);
1040 static struct blob_buf b;
1043 if (!ubus_lookup_id(ctx, "service", &id)) {
1046 blob_buf_init(&b, 0);
1047 blobmsg_add_string(&b, "type", "config.change");
1048 c = blobmsg_open_table(&b, "data");
1049 blobmsg_add_string(&b, "package", pkg);
1050 blobmsg_close_table(&b, c);
1051 ubus_invoke(ctx, id, "event", b.head, NULL, 0, 1000);
1057 rpc_uci_revert_commit(struct ubus_context *ctx, struct blob_attr *msg, bool commit)
1059 struct blob_attr *tb[__RPC_C_MAX];
1060 struct uci_package *p = NULL;
1061 struct uci_ptr ptr = { 0 };
1063 blobmsg_parse(rpc_uci_config_policy, __RPC_C_MAX, tb,
1064 blob_data(msg), blob_len(msg));
1066 if (!tb[RPC_C_CONFIG])
1067 return UBUS_STATUS_INVALID_ARGUMENT;
1069 if (!rpc_uci_write_access(tb[RPC_C_SESSION], tb[RPC_C_CONFIG]))
1070 return UBUS_STATUS_PERMISSION_DENIED;
1072 ptr.package = blobmsg_data(tb[RPC_C_CONFIG]);
1076 uci_load(cursor, ptr.package, &p);
1080 uci_commit(cursor, &p, false);
1081 uci_unload(cursor, p);
1083 rpc_uci_trigger_event(ctx, blobmsg_get_string(tb[RPC_C_CONFIG]));
1087 if (!uci_lookup_ptr(cursor, &ptr, NULL, true) && ptr.p)
1088 uci_revert(cursor, &ptr);
1091 return rpc_uci_status();
1095 rpc_uci_revert(struct ubus_context *ctx, struct ubus_object *obj,
1096 struct ubus_request_data *req, const char *method,
1097 struct blob_attr *msg)
1099 return rpc_uci_revert_commit(ctx, msg, false);
1103 rpc_uci_commit(struct ubus_context *ctx, struct ubus_object *obj,
1104 struct ubus_request_data *req, const char *method,
1105 struct blob_attr *msg)
1107 return rpc_uci_revert_commit(ctx, msg, true);
1111 rpc_uci_configs(struct ubus_context *ctx, struct ubus_object *obj,
1112 struct ubus_request_data *req, const char *method,
1113 struct blob_attr *msg)
1119 if (uci_list_configs(cursor, &configs))
1122 blob_buf_init(&buf, 0);
1124 c = blobmsg_open_array(&buf, "configs");
1126 for (i = 0; configs[i]; i++)
1127 blobmsg_add_string(&buf, NULL, configs[i]);
1129 blobmsg_close_array(&buf, c);
1131 ubus_send_reply(ctx, req, buf.head);
1134 return rpc_uci_status();
1139 * Remove given delta save directory (if any).
1142 rpc_uci_purge_dir(const char *path)
1147 char file[PATH_MAX];
1149 if (stat(path, &s) || !S_ISDIR(s.st_mode))
1152 if ((d = opendir(path)) != NULL)
1154 while ((e = readdir(d)) != NULL)
1156 snprintf(file, sizeof(file) - 1, "%s/%s", path, e->d_name);
1158 if (stat(file, &s) || !S_ISREG(s.st_mode))
1171 * Session destroy callback to purge associated delta directory.
1174 rpc_uci_purge_savedir_cb(struct rpc_session *ses, void *priv)
1176 char path[PATH_MAX];
1178 snprintf(path, sizeof(path) - 1, RPC_UCI_SAVEDIR_PREFIX "%s", ses->id);
1179 rpc_uci_purge_dir(path);
1183 * Removes all delta directories which match the RPC_UCI_SAVEDIR_PREFIX.
1184 * This is used to clean up garbage when starting rpcd.
1186 void rpc_uci_purge_savedirs(void)
1191 if (!glob(RPC_UCI_SAVEDIR_PREFIX "*", 0, NULL, &gl))
1193 for (i = 0; i < gl.gl_pathc; i++)
1194 rpc_uci_purge_dir(gl.gl_pathv[i]);
1200 int rpc_uci_api_init(struct ubus_context *ctx)
1202 static const struct ubus_method uci_methods[] = {
1203 { .name = "configs", .handler = rpc_uci_configs },
1204 UBUS_METHOD("get", rpc_uci_get, rpc_uci_get_policy),
1205 UBUS_METHOD("add", rpc_uci_add, rpc_uci_add_policy),
1206 UBUS_METHOD("set", rpc_uci_set, rpc_uci_set_policy),
1207 UBUS_METHOD("delete", rpc_uci_delete, rpc_uci_delete_policy),
1208 UBUS_METHOD("rename", rpc_uci_rename, rpc_uci_rename_policy),
1209 UBUS_METHOD("order", rpc_uci_order, rpc_uci_order_policy),
1210 UBUS_METHOD("changes", rpc_uci_changes, rpc_uci_config_policy),
1211 UBUS_METHOD("revert", rpc_uci_revert, rpc_uci_config_policy),
1212 UBUS_METHOD("commit", rpc_uci_commit, rpc_uci_config_policy),
1215 static struct ubus_object_type uci_type =
1216 UBUS_OBJECT_TYPE("luci-rpc-uci", uci_methods);
1218 static struct ubus_object obj = {
1221 .methods = uci_methods,
1222 .n_methods = ARRAY_SIZE(uci_methods),
1225 static struct rpc_session_cb cb = {
1226 .cb = rpc_uci_purge_savedir_cb
1229 cursor = uci_alloc_context();
1232 return UBUS_STATUS_UNKNOWN_ERROR;
1234 rpc_session_destroy_cb(&cb);
1236 return ubus_add_object(ctx, &obj);