ucimap.c

   1 /*
   2  * ucimap - library for mapping uci sections into data structures
   3  * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation
   8  *
   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 General Public License for more details.
  13  */
  14 #include <strings.h>
  15 #include <stdbool.h>
  16 #include <string.h>
  17 #include <stdlib.h>
  18 #include <unistd.h>
  19 #include <limits.h>
  20 #include <stdio.h>
  21 #include <ctype.h>
  22 #include <errno.h>
  23 #include "ucimap.h"
  24 #include "uci_internal.h"
  25
  26 struct uci_alloc {
  27         void *ptr;
  28 };
  29
  30 struct uci_alloc_custom {
  31         void *section;
  32         struct uci_optmap *om;
  33         void *ptr;
  34 };
  35
  36 struct uci_fixup {
  37         struct list_head list;
  38         struct uci_sectionmap *sm;
  39         const char *name;
  40         enum ucimap_type type;
  41         union ucimap_data *data;
  42 };
  43
  44 #define ucimap_foreach_option(_sm, _o) \
  45         if (!(_sm)->options_size) \
  46                 (_sm)->options_size = sizeof(struct uci_optmap); \
  47         for (_o = &(_sm)->options[0]; \
  48                  ((char *)(_o)) < ((char *) &(_sm)->options[0] + \
  49                         (_sm)->options_size * (_sm)->n_options); \
  50                  _o = (struct uci_optmap *) ((char *)(_o) + \
  51                         (_sm)->options_size))
  52
  53
  54 static inline bool
  55 ucimap_is_alloc(enum ucimap_type type)
  56 {
  57         switch(type & UCIMAP_SUBTYPE) {
  58         case UCIMAP_STRING:
  59                 return true;
  60         default:
  61                 return false;
  62         }
  63 }
  64
  65 static inline bool
  66 ucimap_is_fixup(enum ucimap_type type)
  67 {
  68         switch(type & UCIMAP_SUBTYPE) {
  69         case UCIMAP_SECTION:
  70                 return true;
  71         default:
  72                 return false;
  73         }
  74 }
  75
  76 static inline bool
  77 ucimap_is_simple(enum ucimap_type type)
  78 {
  79         return ((type & UCIMAP_TYPE) == UCIMAP_SIMPLE);
  80 }
  81
  82 static inline bool
  83 ucimap_is_list(enum ucimap_type type)
  84 {
  85         return ((type & UCIMAP_TYPE) == UCIMAP_LIST);
  86 }
  87
  88 static inline bool
  89 ucimap_is_list_auto(enum ucimap_type type)
  90 {
  91         return ucimap_is_list(type) && !!(type & UCIMAP_LIST_AUTO);
  92 }
  93
  94 static inline bool
  95 ucimap_is_custom(enum ucimap_type type)
  96 {
  97         return ((type & UCIMAP_SUBTYPE) == UCIMAP_CUSTOM);
  98 }
  99
 100 static inline void *
 101 ucimap_section_ptr(struct ucimap_section_data *sd)
 102 {
 103         return ((char *) sd - sd->sm->smap_offset);
 104 }
 105
 106 static inline struct ucimap_section_data *
 107 ucimap_ptr_section(struct uci_sectionmap *sm, void *ptr) {
 108         ptr = (char *) ptr + sm->smap_offset;
 109         return ptr;
 110 }
 111
 112 static inline union ucimap_data *
 113 ucimap_get_data(struct ucimap_section_data *sd, struct uci_optmap *om)
 114 {
 115         void *data;
 116
 117         data = (char *) ucimap_section_ptr(sd) + om->offset;
 118         return data;
 119 }
 120
 121 int
 122 ucimap_init(struct uci_map *map)
 123 {
 124         INIT_LIST_HEAD(&map->pending);
 125         INIT_LIST_HEAD(&map->sdata);
 126         INIT_LIST_HEAD(&map->fixup);
 127         return 0;
 128 }
 129
 130 static void
 131 ucimap_add_alloc(struct ucimap_section_data *sd, void *ptr)
 132 {
 133         struct uci_alloc *a = &sd->allocmap[sd->allocmap_len++];
 134         a->ptr = ptr;
 135 }
 136
 137 void
 138 ucimap_free_section(struct uci_map *map, struct ucimap_section_data *sd)
 139 {
 140         void *section;
 141         int i;
 142
 143         section = ucimap_section_ptr(sd);
 144         if (!list_empty(&sd->list))
 145                 list_del(&sd->list);
 146
 147         if (sd->sm->free)
 148                 sd->sm->free(map, section);
 149
 150         for (i = 0; i < sd->allocmap_len; i++) {
 151                 free(sd->allocmap[i].ptr);
 152         }
 153
 154         if (sd->alloc_custom) {
 155                 for (i = 0; i < sd->alloc_custom_len; i++) {
 156                         struct uci_alloc_custom *a = &sd->alloc_custom[i];
 157                         a->om->free(a->section, a->om, a->ptr);
 158                 }
 159                 free(sd->alloc_custom);
 160         }
 161
 162         free(sd->allocmap);
 163         free(sd);
 164 }
 165
 166 void
 167 ucimap_cleanup(struct uci_map *map)
 168 {
 169         struct list_head *ptr, *tmp;
 170
 171         list_for_each_safe(ptr, tmp, &map->sdata) {
 172                 struct ucimap_section_data *sd = list_entry(ptr, struct ucimap_section_data, list);
 173                 ucimap_free_section(map, sd);
 174         }
 175 }
 176
 177 static void *
 178 ucimap_find_section(struct uci_map *map, struct uci_fixup *f)
 179 {
 180         struct ucimap_section_data *sd;
 181         struct list_head *p;
 182
 183         list_for_each(p, &map->sdata) {
 184                 sd = list_entry(p, struct ucimap_section_data, list);
 185                 if (sd->sm != f->sm)
 186                         continue;
 187                 if (strcmp(f->name, sd->section_name) != 0)
 188                         continue;
 189                 return ucimap_section_ptr(sd);
 190         }
 191         list_for_each(p, &map->pending) {
 192                 sd = list_entry(p, struct ucimap_section_data, list);
 193                 if (sd->sm != f->sm)
 194                         continue;
 195                 if (strcmp(f->name, sd->section_name) != 0)
 196                         continue;
 197                 return ucimap_section_ptr(sd);
 198         }
 199         return NULL;
 200 }
 201
 202 static bool
 203 ucimap_handle_fixup(struct uci_map *map, struct uci_fixup *f)
 204 {
 205         void *ptr = ucimap_find_section(map, f);
 206         struct ucimap_list *list;
 207
 208         if (!ptr)
 209                 return false;
 210
 211         switch(f->type & UCIMAP_TYPE) {
 212         case UCIMAP_SIMPLE:
 213                 f->data->ptr = ptr;
 214                 break;
 215         case UCIMAP_LIST:
 216                 list = f->data->list;
 217                 list->item[list->n_items++].ptr = ptr;
 218                 break;
 219         }
 220         return true;
 221 }
 222
 223 void
 224 ucimap_free_item(struct ucimap_section_data *sd, void *item)
 225 {
 226         struct uci_alloc_custom *ac;
 227         struct uci_alloc *a;
 228         void *ptr = *((void **) item);
 229         int i;
 230
 231         if (!ptr)
 232                 return;
 233
 234         *((void **)item) = NULL;
 235         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 236                 if (a->ptr != ptr)
 237                         continue;
 238
 239                 if (i != sd->allocmap_len - 1)
 240                         a->ptr = sd->allocmap[sd->allocmap_len - 1].ptr;
 241
 242                 sd->allocmap_len--;
 243                 return;
 244         }
 245
 246         for (i = 0, ac = sd->alloc_custom; i < sd->alloc_custom_len; i++, ac++) {
 247                 if (ac->ptr != ptr)
 248                         continue;
 249
 250                 if (i != sd->alloc_custom_len - 1)
 251                         memcpy(ac, &sd->alloc_custom[sd->alloc_custom_len - 1],
 252                                 sizeof(struct uci_alloc_custom));
 253
 254                 ac->om->free(ac->section, ac->om, ac->ptr);
 255                 sd->alloc_custom_len--;
 256                 return;
 257         }
 258 }
 259
 260 int
 261 ucimap_resize_list(struct ucimap_section_data *sd, struct ucimap_list **list, int items)
 262 {
 263         struct ucimap_list *new;
 264         struct uci_alloc *a;
 265         int i, offset = 0;
 266         int size = sizeof(struct ucimap_list) + items * sizeof(union ucimap_data);
 267
 268         if (!*list) {
 269                 new = calloc(1, size);
 270
 271                 ucimap_add_alloc(sd, new);
 272                 goto set;
 273         }
 274
 275         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 276                 if (a->ptr != *list)
 277                         continue;
 278
 279                 goto realloc;
 280         }
 281         return -ENOENT;
 282
 283 realloc:
 284         if (items > (*list)->size)
 285                 offset = (items - (*list)->size) * sizeof(union ucimap_data);
 286
 287         a->ptr = realloc(a->ptr, size);
 288         if (offset)
 289                 memset((char *) a->ptr + offset, 0, size - offset);
 290         new = a->ptr;
 291
 292 set:
 293         new->size = items;
 294         *list = new;
 295         return 0;
 296 }
 297
 298 static void
 299 ucimap_add_fixup(struct ucimap_section_data *sd, union ucimap_data *data, struct uci_optmap *om, const char *str)
 300 {
 301         struct uci_fixup *f, tmp;
 302         struct uci_map *map = sd->map;
 303
 304         INIT_LIST_HEAD(&tmp.list);
 305         tmp.sm = om->data.sm;
 306         tmp.name = str;
 307         tmp.type = om->type;
 308         tmp.data = data;
 309         if (ucimap_handle_fixup(map, &tmp))
 310                 return;
 311
 312         f = malloc(sizeof(struct uci_fixup));
 313         if (!f)
 314                 return;
 315
 316         memcpy(f, &tmp, sizeof(tmp));
 317         list_add_tail(&f->list, &map->fixup);
 318 }
 319
 320 static void
 321 ucimap_add_custom_alloc(struct ucimap_section_data *sd, struct uci_optmap *om, void *ptr)
 322 {
 323         struct uci_alloc_custom *a = &sd->alloc_custom[sd->alloc_custom_len++];
 324
 325         a->section = ucimap_section_ptr(sd);
 326         a->om = om;
 327         a->ptr = ptr;
 328 }
 329
 330 static void
 331 ucimap_add_value(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 332 {
 333         union ucimap_data tdata = *data;
 334         char *eptr = NULL;
 335         long lval;
 336         char *s;
 337         int val;
 338
 339         if (ucimap_is_list(om->type) && !ucimap_is_fixup(om->type)) {
 340                 if (unlikely(data->list->size <= data->list->n_items)) {
 341                         /* should not happen */
 342                         DPRINTF("ERROR: overflow while filling a list\n");
 343                         return;
 344                 }
 345
 346                 data = &data->list->item[data->list->n_items++];
 347         }
 348
 349         switch(om->type & UCIMAP_SUBTYPE) {
 350         case UCIMAP_STRING:
 351                 if ((om->data.s.maxlen > 0) &&
 352                         (strlen(str) > om->data.s.maxlen))
 353                         return;
 354
 355                 s = strdup(str);
 356                 tdata.s = s;
 357                 ucimap_add_alloc(sd, s);
 358                 break;
 359         case UCIMAP_BOOL:
 360                 if (!strcmp(str, "on"))
 361                         val = true;
 362                 else if (!strcmp(str, "1"))
 363                         val = true;
 364                 else if (!strcmp(str, "enabled"))
 365                         val = true;
 366                 else if (!strcmp(str, "off"))
 367                         val = false;
 368                 else if (!strcmp(str, "0"))
 369                         val = false;
 370                 else if (!strcmp(str, "disabled"))
 371                         val = false;
 372                 else
 373                         return;
 374
 375                 tdata.b = val;
 376                 break;
 377         case UCIMAP_INT:
 378                 lval = strtol(str, &eptr, om->data.i.base);
 379                 if (lval < INT_MIN || lval > INT_MAX)
 380                         return;
 381
 382                 if (!eptr || *eptr == '\0')
 383                         tdata.i = (int) lval;
 384                 else
 385                         return;
 386                 break;
 387         case UCIMAP_SECTION:
 388                 ucimap_add_fixup(sd, data, om, str);
 389                 return;
 390         case UCIMAP_CUSTOM:
 391                 tdata.s = (char *) data;
 392                 break;
 393         }
 394         if (om->parse) {
 395                 if (om->parse(ucimap_section_ptr(sd), om, &tdata, str) < 0)
 396                         return;
 397                 if (ucimap_is_custom(om->type) && om->free) {
 398                         if (tdata.ptr != data->ptr)
 399                                 ucimap_add_custom_alloc(sd, om, data->ptr);
 400                 }
 401         }
 402         if (ucimap_is_custom(om->type))
 403                 return;
 404         memcpy(data, &tdata, sizeof(union ucimap_data));
 405 }
 406
 407
 408 static void
 409 ucimap_convert_list(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 410 {
 411         char *s, *p;
 412
 413         s = strdup(str);
 414         if (!s)
 415                 return;
 416
 417         ucimap_add_alloc(sd, s);
 418
 419         do {
 420                 while (isspace(*s))
 421                         s++;
 422
 423                 if (!*s)
 424                         break;
 425
 426                 p = s;
 427                 while (*s && !isspace(*s))
 428                         s++;
 429
 430                 if (isspace(*s)) {
 431                         *s = 0;
 432                         s++;
 433                 }
 434
 435                 ucimap_add_value(data, om, sd, p);
 436         } while (*s);
 437 }
 438
 439 static int
 440 ucimap_parse_options(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 441 {
 442         struct uci_element *e, *l;
 443         struct uci_option *o;
 444         union ucimap_data *data;
 445
 446         uci_foreach_element(&s->options, e) {
 447                 struct uci_optmap *om = NULL, *tmp;
 448
 449                 ucimap_foreach_option(sm, tmp) {
 450                         if (strcmp(e->name, tmp->name) == 0) {
 451                                 om = tmp;
 452                                 break;
 453                         }
 454                 }
 455                 if (!om)
 456                         continue;
 457
 458                 data = ucimap_get_data(sd, om);
 459                 o = uci_to_option(e);
 460                 if ((o->type == UCI_TYPE_STRING) && ucimap_is_simple(om->type)) {
 461                         ucimap_add_value(data, om, sd, o->v.string);
 462                 } else if ((o->type == UCI_TYPE_LIST) && ucimap_is_list(om->type)) {
 463                         uci_foreach_element(&o->v.list, l) {
 464                                 ucimap_add_value(data, om, sd, l->name);
 465                         }
 466                 } else if ((o->type == UCI_TYPE_STRING) && ucimap_is_list_auto(om->type)) {
 467                         ucimap_convert_list(data, om, sd, o->v.string);
 468                 }
 469         }
 470
 471         return 0;
 472 }
 473
 474 static void
 475 ucimap_add_section(struct ucimap_section_data *sd)
 476 {
 477         struct uci_map *map = sd->map;
 478
 479         if (sd->sm->add(map, ucimap_section_ptr(sd)) < 0)
 480                 ucimap_free_section(map, sd);
 481         else
 482                 list_add_tail(&sd->list, &map->sdata);
 483 }
 484
 485 static const char *ucimap_type_names[] = {
 486         [UCIMAP_STRING] = "string",
 487         [UCIMAP_INT] = "integer",
 488         [UCIMAP_BOOL] = "boolean",
 489         [UCIMAP_SECTION] = "section",
 490         [UCIMAP_LIST] = "list",
 491 };
 492
 493 static inline const char *
 494 ucimap_get_type_name(int type)
 495 {
 496         static char buf[32];
 497         const char *name;
 498
 499         if (ucimap_is_list(type))
 500                 return ucimap_type_names[UCIMAP_LIST];
 501
 502         name = ucimap_type_names[type & UCIMAP_SUBTYPE];
 503         if (!name) {
 504                 sprintf(buf, "Unknown (%d)", type & UCIMAP_SUBTYPE);
 505                 name = buf;
 506         }
 507
 508         return name;
 509 }
 510
 511 static bool
 512 ucimap_check_optmap_type(struct uci_sectionmap *sm, struct uci_optmap *om)
 513 {
 514         unsigned int type;
 515
 516         if (unlikely(sm->type_name != om->type_name) &&
 517             unlikely(strcmp(sm->type_name, om->type_name) != 0)) {
 518                 DPRINTF("Option '%s' of section type '%s' refereces unknown "
 519                         "section type '%s', should be '%s'.\n",
 520                         om->name, sm->type, om->type_name, sm->type_name);
 521                 return false;
 522         }
 523
 524         if (om->detected_type < 0)
 525                 return true;
 526
 527         if (ucimap_is_custom(om->type))
 528                 return true;
 529
 530         if (ucimap_is_list(om->type) !=
 531             ucimap_is_list(om->detected_type))
 532                 goto failed;
 533
 534         if (ucimap_is_list(om->type))
 535                 return true;
 536
 537         type = om->type & UCIMAP_SUBTYPE;
 538         switch(type) {
 539         case UCIMAP_STRING:
 540         case UCIMAP_INT:
 541         case UCIMAP_BOOL:
 542                 if (type != om->detected_type)
 543                         goto failed;
 544                 break;
 545         case UCIMAP_SECTION:
 546                 goto failed;
 547         default:
 548                 break;
 549         }
 550         return true;
 551
 552 failed:
 553         DPRINTF("Invalid type in option '%s' of section type '%s', "
 554                 "declared type is %s, detected type is %s\n",
 555                 om->name, sm->type,
 556                 ucimap_get_type_name(om->type),
 557                 ucimap_get_type_name(om->detected_type));
 558         return false;
 559 }
 560
 561 static void
 562 ucimap_count_alloc(struct uci_optmap *om, int *n_alloc, int *n_custom)
 563 {
 564         if (ucimap_is_alloc(om->type))
 565                 (*n_alloc)++;
 566         else if (ucimap_is_custom(om->type) && om->free)
 567                 (*n_custom)++;
 568 }
 569
 570 int
 571 ucimap_parse_section(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 572 {
 573         struct uci_optmap *om;
 574         char *section_name;
 575         void *section;
 576         int n_alloc = 2;
 577         int n_alloc_custom = 0;
 578         int err;
 579
 580         INIT_LIST_HEAD(&sd->list);
 581         sd->map = map;
 582         sd->sm = sm;
 583
 584         ucimap_foreach_option(sm, om) {
 585                 if (!ucimap_check_optmap_type(sm, om))
 586                         continue;
 587
 588                 if (ucimap_is_list(om->type)) {
 589                         union ucimap_data *data;
 590                         struct uci_element *e;
 591                         int n_elements = 0;
 592                         int n_elements_custom = 0;
 593                         int size;
 594
 595                         data = ucimap_get_data(sd, om);
 596                         uci_foreach_element(&s->options, e) {
 597                                 struct uci_option *o = uci_to_option(e);
 598                                 struct uci_element *tmp;
 599
 600                                 if (strcmp(e->name, om->name) != 0)
 601                                         continue;
 602
 603                                 if (o->type == UCI_TYPE_LIST) {
 604                                         uci_foreach_element(&o->v.list, tmp) {
 605                                                 ucimap_count_alloc(om, &n_elements, &n_elements_custom);
 606                                         }
 607                                 } else if ((o->type == UCI_TYPE_STRING) &&
 608                                            ucimap_is_list_auto(om->type)) {
 609                                         const char *data = o->v.string;
 610                                         do {
 611                                                 while (isspace(*data))
 612                                                         data++;
 613
 614                                                 if (!*data)
 615                                                         break;
 616
 617                                                 n_elements++;
 618                                                 ucimap_count_alloc(om, &n_elements, &n_elements_custom);
 619
 620                                                 while (*data && !isspace(*data))
 621                                                         data++;
 622                                         } while (*data);
 623
 624                                         /* for the duplicated data string */
 625                                         if (n_elements)
 626                                                 n_alloc++;
 627                                 }
 628                                 break;
 629                         }
 630                         /* add one more for the ucimap_list */
 631                         n_alloc += n_elements + 1;
 632                         n_alloc_custom += n_elements_custom;
 633                         size = sizeof(struct ucimap_list) +
 634                                 n_elements * sizeof(union ucimap_data);
 635
 636                         data->list = malloc(size);
 637                         if (!data->list)
 638                                 goto error_mem;
 639
 640                         data->list->size = n_elements;
 641                         memset(data->list, 0, size);
 642                 } else {
 643                         ucimap_count_alloc(om, &n_alloc, &n_alloc_custom);
 644                 }
 645         }
 646
 647         sd->allocmap = calloc(n_alloc, sizeof(struct uci_alloc));
 648         if (!sd->allocmap)
 649                 goto error_mem;
 650
 651         if (n_alloc_custom > 0) {
 652                 sd->alloc_custom = calloc(n_alloc_custom, sizeof(struct uci_alloc_custom));
 653                 if (!sd->alloc_custom)
 654                         goto error_mem;
 655         }
 656
 657         section_name = strdup(s->e.name);
 658         if (!section_name)
 659                 goto error_mem;
 660
 661         sd->section_name = section_name;
 662
 663         sd->cmap = calloc(1, BITFIELD_SIZE(sm->n_options));
 664         if (!sd->cmap)
 665                 goto error_mem;
 666
 667         ucimap_add_alloc(sd, (void *)section_name);
 668         ucimap_add_alloc(sd, (void *)sd->cmap);
 669         ucimap_foreach_option(sm, om) {
 670                 if (!ucimap_is_list(om->type))
 671                         continue;
 672
 673                 ucimap_add_alloc(sd, ucimap_get_data(sd, om)->list);
 674         }
 675
 676         section = ucimap_section_ptr(sd);
 677         err = sm->init(map, section, s);
 678         if (err)
 679                 goto error;
 680
 681         if (map->parsed) {
 682                 ucimap_add_section(sd);
 683         } else {
 684                 list_add_tail(&sd->list, &map->pending);
 685         }
 686
 687         err = ucimap_parse_options(map, sm, sd, s);
 688         if (err)
 689                 goto error;
 690
 691         return 0;
 692
 693 error_mem:
 694         if (sd->allocmap)
 695                 free(sd->allocmap);
 696         free(sd);
 697         return UCI_ERR_MEM;
 698
 699 error:
 700         ucimap_free_section(map, sd);
 701         return err;
 702 }
 703
 704 static int
 705 ucimap_fill_ptr(struct uci_ptr *ptr, struct uci_section *s, const char *option)
 706 {
 707         struct uci_package *p = s->package;
 708
 709         memset(ptr, 0, sizeof(struct uci_ptr));
 710
 711         ptr->package = p->e.name;
 712         ptr->p = p;
 713
 714         ptr->section = s->e.name;
 715         ptr->s = s;
 716
 717         ptr->option = option;
 718         return uci_lookup_ptr(p->ctx, ptr, NULL, false);
 719 }
 720
 721 void
 722 ucimap_set_changed(struct ucimap_section_data *sd, void *field)
 723 {
 724         void *section = ucimap_section_ptr(sd);
 725         struct uci_sectionmap *sm = sd->sm;
 726         struct uci_optmap *om;
 727         int ofs = (char *)field - (char *)section;
 728         int i = 0;
 729
 730         ucimap_foreach_option(sm, om) {
 731                 if (om->offset == ofs) {
 732                         SET_BIT(sd->cmap, i);
 733                         break;
 734                 }
 735                 i++;
 736         }
 737 }
 738
 739 static char *
 740 ucimap_data_to_string(struct ucimap_section_data *sd, struct uci_optmap *om, union ucimap_data *data)
 741 {
 742         static char buf[32];
 743         char *str = NULL;
 744
 745         switch(om->type & UCIMAP_SUBTYPE) {
 746         case UCIMAP_STRING:
 747                 str = data->s;
 748                 break;
 749         case UCIMAP_INT:
 750                 sprintf(buf, "%d", data->i);
 751                 str = buf;
 752                 break;
 753         case UCIMAP_BOOL:
 754                 sprintf(buf, "%d", !!data->b);
 755                 str = buf;
 756                 break;
 757         case UCIMAP_SECTION:
 758                 if (data->ptr)
 759                         str = (char *) ucimap_ptr_section(om->data.sm, data->ptr)->section_name;
 760                 else
 761                         str = "";
 762                 break;
 763         case UCIMAP_CUSTOM:
 764                 break;
 765         default:
 766                 return NULL;
 767         }
 768
 769         if (om->format) {
 770                 union ucimap_data tdata;
 771
 772                 if (ucimap_is_custom(om->type)) {
 773                         tdata.s = (char *)data;
 774                         data = &tdata;
 775                 }
 776
 777                 if (om->format(ucimap_section_ptr(sd), om, data, &str) < 0)
 778                         return NULL;
 779
 780                 if (!str)
 781                         str = "";
 782         }
 783         return str;
 784 }
 785
 786 int
 787 ucimap_store_section(struct uci_map *map, struct uci_package *p, struct ucimap_section_data *sd)
 788 {
 789         struct uci_sectionmap *sm = sd->sm;
 790         struct uci_section *s = NULL;
 791         struct uci_optmap *om;
 792         struct uci_element *e;
 793         struct uci_ptr ptr;
 794         int i = 0;
 795         int ret;
 796
 797         uci_foreach_element(&p->sections, e) {
 798                 if (!strcmp(e->name, sd->section_name)) {
 799                         s = uci_to_section(e);
 800                         break;
 801                 }
 802         }
 803         if (!s)
 804                 return UCI_ERR_NOTFOUND;
 805
 806         ucimap_foreach_option(sm, om) {
 807                 union ucimap_data *data;
 808
 809                 i++;
 810                 data = ucimap_get_data(sd, om);
 811                 if (!TEST_BIT(sd->cmap, i - 1))
 812                         continue;
 813
 814                 ucimap_fill_ptr(&ptr, s, om->name);
 815                 if (ucimap_is_list(om->type)) {
 816                         struct ucimap_list *list = data->list;
 817                         bool first = true;
 818                         int j;
 819
 820                         for (j = 0; j < list->n_items; j++) {
 821                                 ptr.value = ucimap_data_to_string(sd, om, &list->item[j]);
 822                                 if (!ptr.value)
 823                                         continue;
 824
 825                                 if (first) {
 826                                         ret = uci_set(s->package->ctx, &ptr);
 827                                         first = false;
 828                                 } else {
 829                                         ret = uci_add_list(s->package->ctx, &ptr);
 830                                 }
 831                                 if (ret)
 832                                         return ret;
 833                         }
 834                 } else {
 835                         ptr.value = ucimap_data_to_string(sd, om, data);
 836                         if (!ptr.value)
 837                                 continue;
 838
 839                         ret = uci_set(s->package->ctx, &ptr);
 840                         if (ret)
 841                                 return ret;
 842                 }
 843
 844                 CLR_BIT(sd->cmap, i - 1);
 845         }
 846
 847         return 0;
 848 }
 849
 850 void
 851 ucimap_parse(struct uci_map *map, struct uci_package *pkg)
 852 {
 853         struct uci_element *e;
 854         struct list_head *p, *tmp;
 855         int i;
 856
 857         INIT_LIST_HEAD(&map->fixup);
 858         uci_foreach_element(&pkg->sections, e) {
 859                 struct uci_section *s = uci_to_section(e);
 860
 861                 for (i = 0; i < map->n_sections; i++) {
 862                         struct uci_sectionmap *sm = map->sections[i];
 863                         struct ucimap_section_data *sd;
 864
 865                         if (strcmp(s->type, map->sections[i]->type) != 0)
 866                                 continue;
 867
 868                         if (sm->alloc) {
 869                                 sd = sm->alloc(map, sm, s);
 870                                 memset(sd, 0, sizeof(struct ucimap_section_data));
 871                         } else {
 872                                 sd = malloc(sm->alloc_len);
 873                                 memset(sd, 0, sm->alloc_len);
 874                         }
 875                         if (!sd)
 876                                 continue;
 877
 878                         ucimap_parse_section(map, sm, sd, s);
 879                 }
 880         }
 881         map->parsed = true;
 882
 883         list_for_each_safe(p, tmp, &map->fixup) {
 884                 struct uci_fixup *f = list_entry(p, struct uci_fixup, list);
 885                 ucimap_handle_fixup(map, f);
 886                 list_del(&f->list);
 887                 free(f);
 888         }
 889
 890         list_for_each_safe(p, tmp, &map->pending) {
 891                 struct ucimap_section_data *sd;
 892                 sd = list_entry(p, struct ucimap_section_data, list);
 893
 894                 list_del_init(&sd->list);
 895                 ucimap_add_section(sd);
 896         }
 897 }