ucimap.c

   1 /*
   2  * ucimap.c - Library for the Unified Configuration Interface
   3  * Copyright (C) 2008-2009 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 Lesser General Public License version 2.1
   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
  15 /*
  16  * This file contains ucimap, an API for mapping UCI to C data structures
  17  */
  18
  19 #include <strings.h>
  20 #include <stdbool.h>
  21 #include <string.h>
  22 #include <stdlib.h>
  23 #include <unistd.h>
  24 #include <limits.h>
  25 #include <stdio.h>
  26 #include <ctype.h>
  27 #include <errno.h>
  28 #include "ucimap.h"
  29 #include "uci_internal.h"
  30
  31 struct ucimap_alloc {
  32         void *ptr;
  33 };
  34
  35 struct ucimap_alloc_custom {
  36         void *section;
  37         struct uci_optmap *om;
  38         void *ptr;
  39 };
  40
  41 struct ucimap_fixup {
  42         struct ucimap_fixup *next;
  43         struct uci_sectionmap *sm;
  44         const char *name;
  45         enum ucimap_type type;
  46         union ucimap_data *data;
  47 };
  48
  49 #define ucimap_foreach_option(_sm, _o) \
  50         if (!(_sm)->options_size) \
  51                 (_sm)->options_size = sizeof(struct uci_optmap); \
  52         for (_o = &(_sm)->options[0]; \
  53                  ((char *)(_o)) < ((char *) &(_sm)->options[0] + \
  54                         (_sm)->options_size * (_sm)->n_options); \
  55                  _o = (struct uci_optmap *) ((char *)(_o) + \
  56                         (_sm)->options_size))
  57
  58
  59 static inline bool
  60 ucimap_is_alloc(enum ucimap_type type)
  61 {
  62         return (type & UCIMAP_SUBTYPE) == UCIMAP_STRING;
  63 }
  64
  65 static inline bool
  66 ucimap_is_fixup(enum ucimap_type type)
  67 {
  68         return (type & UCIMAP_SUBTYPE) == UCIMAP_SECTION;
  69 }
  70
  71 static inline bool
  72 ucimap_is_simple(enum ucimap_type type)
  73 {
  74         return ((type & UCIMAP_TYPE) == UCIMAP_SIMPLE);
  75 }
  76
  77 static inline bool
  78 ucimap_is_list(enum ucimap_type type)
  79 {
  80         return ((type & UCIMAP_TYPE) == UCIMAP_LIST);
  81 }
  82
  83 static inline bool
  84 ucimap_is_list_auto(enum ucimap_type type)
  85 {
  86         return ucimap_is_list(type) && !!(type & UCIMAP_LIST_AUTO);
  87 }
  88
  89 static inline bool
  90 ucimap_is_custom(enum ucimap_type type)
  91 {
  92         return ((type & UCIMAP_SUBTYPE) == UCIMAP_CUSTOM);
  93 }
  94
  95 static inline void *
  96 ucimap_section_ptr(struct ucimap_section_data *sd)
  97 {
  98         return ((char *) sd - sd->sm->smap_offset);
  99 }
 100
 101 static inline struct ucimap_section_data *
 102 ucimap_ptr_section(struct uci_sectionmap *sm, void *ptr) {
 103         ptr = (char *) ptr + sm->smap_offset;
 104         return ptr;
 105 }
 106
 107 static inline union ucimap_data *
 108 ucimap_get_data(struct ucimap_section_data *sd, struct uci_optmap *om)
 109 {
 110         void *data;
 111
 112         data = (char *) ucimap_section_ptr(sd) + om->offset;
 113         return data;
 114 }
 115
 116 int
 117 ucimap_init(struct uci_map *map)
 118 {
 119         map->fixup = NULL;
 120         map->sdata = NULL;
 121         map->fixup_tail = &map->fixup;
 122         map->sdata_tail = &map->sdata;
 123         return 0;
 124 }
 125
 126 static void
 127 ucimap_add_alloc(struct ucimap_section_data *sd, void *ptr)
 128 {
 129         struct ucimap_alloc *a = &sd->allocmap[sd->allocmap_len++];
 130         a->ptr = ptr;
 131 }
 132
 133 void
 134 ucimap_free_section(struct uci_map *map, struct ucimap_section_data *sd)
 135 {
 136         void *section;
 137         int i;
 138
 139         section = ucimap_section_ptr(sd);
 140         if (sd->ref)
 141                 *sd->ref = sd->next;
 142
 143         if (sd->sm->free)
 144                 sd->sm->free(map, section);
 145
 146         for (i = 0; i < sd->allocmap_len; i++) {
 147                 free(sd->allocmap[i].ptr);
 148         }
 149
 150         if (sd->alloc_custom) {
 151                 for (i = 0; i < sd->alloc_custom_len; i++) {
 152                         struct ucimap_alloc_custom *a = &sd->alloc_custom[i];
 153                         a->om->free(a->section, a->om, a->ptr);
 154                 }
 155                 free(sd->alloc_custom);
 156         }
 157
 158         free(sd->allocmap);
 159         free(sd);
 160 }
 161
 162 void
 163 ucimap_cleanup(struct uci_map *map)
 164 {
 165         struct ucimap_section_data *sd;
 166
 167         for (sd = map->sdata; sd; sd = sd->next) {
 168                 ucimap_free_section(map, sd);
 169         }
 170 }
 171
 172 static void *
 173 ucimap_find_section(struct uci_map *map, struct ucimap_fixup *f)
 174 {
 175         struct ucimap_section_data *sd;
 176
 177         for (sd = map->sdata; sd; sd = sd->next) {
 178                 if (sd->sm != f->sm)
 179                         continue;
 180                 if (strcmp(f->name, sd->section_name) != 0)
 181                         continue;
 182                 return ucimap_section_ptr(sd);
 183         }
 184         for (sd = map->pending; sd; sd = sd->next) {
 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         return NULL;
 192 }
 193
 194 static union ucimap_data *
 195 ucimap_list_append(struct ucimap_list *list)
 196 {
 197         if (unlikely(list->size <= list->n_items)) {
 198                 /* should not happen */
 199                 DPRINTF("ERROR: overflow while filling a list (size=%d)\n", list->size);
 200                 return NULL;
 201         }
 202         return &list->item[list->n_items++];
 203 }
 204
 205
 206 static bool
 207 ucimap_handle_fixup(struct uci_map *map, struct ucimap_fixup *f)
 208 {
 209         void *ptr = ucimap_find_section(map, f);
 210         struct ucimap_list *list;
 211         union ucimap_data *data;
 212
 213         if (!ptr)
 214                 return false;
 215
 216         switch(f->type & UCIMAP_TYPE) {
 217         case UCIMAP_SIMPLE:
 218                 f->data->ptr = ptr;
 219                 break;
 220         case UCIMAP_LIST:
 221                 list = f->data->list;
 222                 data = ucimap_list_append(f->data->list);
 223                 if (!data)
 224                         return false;
 225
 226                 data->ptr = ptr;
 227                 break;
 228         }
 229         return true;
 230 }
 231
 232 void
 233 ucimap_free_item(struct ucimap_section_data *sd, void *item)
 234 {
 235         struct ucimap_alloc_custom *ac;
 236         struct ucimap_alloc *a;
 237         void *ptr = *((void **) item);
 238         int i;
 239
 240         if (!ptr)
 241                 return;
 242
 243         *((void **)item) = NULL;
 244         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 245                 if (a->ptr != ptr)
 246                         continue;
 247
 248                 if (i != sd->allocmap_len - 1)
 249                         a->ptr = sd->allocmap[sd->allocmap_len - 1].ptr;
 250
 251                 sd->allocmap_len--;
 252                 return;
 253         }
 254
 255         for (i = 0, ac = sd->alloc_custom; i < sd->alloc_custom_len; i++, ac++) {
 256                 if (ac->ptr != ptr)
 257                         continue;
 258
 259                 if (i != sd->alloc_custom_len - 1)
 260                         memcpy(ac, &sd->alloc_custom[sd->alloc_custom_len - 1],
 261                                 sizeof(struct ucimap_alloc_custom));
 262
 263                 ac->om->free(ac->section, ac->om, ac->ptr);
 264                 sd->alloc_custom_len--;
 265                 return;
 266         }
 267 }
 268
 269 int
 270 ucimap_resize_list(struct ucimap_section_data *sd, struct ucimap_list **list, int items)
 271 {
 272         struct ucimap_list *new;
 273         struct ucimap_alloc *a;
 274         int i, offset = 0;
 275         int size = sizeof(struct ucimap_list) + items * sizeof(union ucimap_data);
 276
 277         if (!*list) {
 278                 new = calloc(1, size);
 279
 280                 ucimap_add_alloc(sd, new);
 281                 goto set;
 282         }
 283
 284         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 285                 if (a->ptr != *list)
 286                         continue;
 287
 288                 goto realloc;
 289         }
 290         return -ENOENT;
 291
 292 realloc:
 293         if (items > (*list)->size)
 294                 offset = (items - (*list)->size) * sizeof(union ucimap_data);
 295
 296         a->ptr = realloc(a->ptr, size);
 297         if (offset)
 298                 memset((char *) a->ptr + offset, 0, size - offset);
 299         new = a->ptr;
 300
 301 set:
 302         new->size = items;
 303         *list = new;
 304         return 0;
 305 }
 306
 307 static void
 308 ucimap_add_fixup(struct ucimap_section_data *sd, union ucimap_data *data, struct uci_optmap *om, const char *str)
 309 {
 310         struct ucimap_fixup *f, tmp;
 311         struct uci_map *map = sd->map;
 312
 313         tmp.sm = om->data.sm;
 314         tmp.name = str;
 315         tmp.type = om->type;
 316         tmp.data = data;
 317         if (ucimap_handle_fixup(map, &tmp))
 318                 return;
 319
 320         f = malloc(sizeof(struct ucimap_fixup));
 321         if (!f)
 322                 return;
 323
 324         memcpy(f, &tmp, sizeof(tmp));
 325         f->next = NULL;
 326         *map->fixup_tail = f;
 327         map->fixup_tail = &f->next;
 328 }
 329
 330 static void
 331 ucimap_add_custom_alloc(struct ucimap_section_data *sd, struct uci_optmap *om, void *ptr)
 332 {
 333         struct ucimap_alloc_custom *a = &sd->alloc_custom[sd->alloc_custom_len++];
 334
 335         a->section = ucimap_section_ptr(sd);
 336         a->om = om;
 337         a->ptr = ptr;
 338 }
 339
 340 static void
 341 ucimap_add_value(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 342 {
 343         union ucimap_data tdata = *data;
 344         char *eptr = NULL;
 345         long lval;
 346         char *s;
 347         int val;
 348
 349         if (ucimap_is_list(om->type) && !ucimap_is_fixup(om->type)) {
 350                 data = ucimap_list_append(data->list);
 351                 if (!data)
 352                         return;
 353         }
 354
 355         switch(om->type & UCIMAP_SUBTYPE) {
 356         case UCIMAP_STRING:
 357                 if ((om->data.s.maxlen > 0) &&
 358                         (strlen(str) > om->data.s.maxlen))
 359                         return;
 360
 361                 s = strdup(str);
 362                 tdata.s = s;
 363                 ucimap_add_alloc(sd, s);
 364                 break;
 365         case UCIMAP_BOOL:
 366                 if (!strcmp(str, "on"))
 367                         val = true;
 368                 else if (!strcmp(str, "1"))
 369                         val = true;
 370                 else if (!strcmp(str, "enabled"))
 371                         val = true;
 372                 else if (!strcmp(str, "off"))
 373                         val = false;
 374                 else if (!strcmp(str, "0"))
 375                         val = false;
 376                 else if (!strcmp(str, "disabled"))
 377                         val = false;
 378                 else
 379                         return;
 380
 381                 tdata.b = val;
 382                 break;
 383         case UCIMAP_INT:
 384                 lval = strtol(str, &eptr, om->data.i.base);
 385                 if (lval < INT_MIN || lval > INT_MAX)
 386                         return;
 387
 388                 if (!eptr || *eptr == '\0')
 389                         tdata.i = (int) lval;
 390                 else
 391                         return;
 392                 break;
 393         case UCIMAP_SECTION:
 394                 ucimap_add_fixup(sd, data, om, str);
 395                 return;
 396         case UCIMAP_CUSTOM:
 397                 break;
 398         }
 399         if (om->parse) {
 400                 if (om->parse(ucimap_section_ptr(sd), om, data, str) < 0)
 401                         return;
 402                 if (ucimap_is_custom(om->type) && om->free) {
 403                         if (tdata.ptr != data->ptr)
 404                                 ucimap_add_custom_alloc(sd, om, data->ptr);
 405                 }
 406         }
 407         if (ucimap_is_custom(om->type))
 408                 return;
 409         memcpy(data, &tdata, sizeof(union ucimap_data));
 410 }
 411
 412
 413 static void
 414 ucimap_convert_list(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 415 {
 416         char *s, *p;
 417
 418         s = strdup(str);
 419         if (!s)
 420                 return;
 421
 422         ucimap_add_alloc(sd, s);
 423
 424         do {
 425                 while (isspace(*s))
 426                         s++;
 427
 428                 if (!*s)
 429                         break;
 430
 431                 p = s;
 432                 while (*s && !isspace(*s))
 433                         s++;
 434
 435                 if (isspace(*s)) {
 436                         *s = 0;
 437                         s++;
 438                 }
 439
 440                 ucimap_add_value(data, om, sd, p);
 441         } while (*s);
 442 }
 443
 444 static int
 445 ucimap_parse_options(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 446 {
 447         struct uci_element *e, *l;
 448         struct uci_option *o;
 449         union ucimap_data *data;
 450
 451         uci_foreach_element(&s->options, e) {
 452                 struct uci_optmap *om = NULL, *tmp;
 453
 454                 ucimap_foreach_option(sm, tmp) {
 455                         if (strcmp(e->name, tmp->name) == 0) {
 456                                 om = tmp;
 457                                 break;
 458                         }
 459                 }
 460                 if (!om)
 461                         continue;
 462
 463                 data = ucimap_get_data(sd, om);
 464                 o = uci_to_option(e);
 465                 if ((o->type == UCI_TYPE_STRING) && ucimap_is_simple(om->type)) {
 466                         ucimap_add_value(data, om, sd, o->v.string);
 467                 } else if ((o->type == UCI_TYPE_LIST) && ucimap_is_list(om->type)) {
 468                         uci_foreach_element(&o->v.list, l) {
 469                                 ucimap_add_value(data, om, sd, l->name);
 470                         }
 471                 } else if ((o->type == UCI_TYPE_STRING) && ucimap_is_list_auto(om->type)) {
 472                         ucimap_convert_list(data, om, sd, o->v.string);
 473                 }
 474         }
 475
 476         return 0;
 477 }
 478
 479 static void
 480 ucimap_add_section_list(struct uci_map *map, struct ucimap_section_data *sd)
 481 {
 482         sd->ref = map->sdata_tail;
 483         *sd->ref = sd;
 484         map->sdata_tail = &sd->next;
 485 }
 486
 487 static void
 488 ucimap_add_section(struct ucimap_section_data *sd)
 489 {
 490         struct uci_map *map = sd->map;
 491
 492         sd->next = NULL;
 493         if (sd->sm->add(map, ucimap_section_ptr(sd)) < 0)
 494                 ucimap_free_section(map, sd);
 495         else
 496                 ucimap_add_section_list(map, sd);
 497 }
 498
 499 #ifdef UCI_DEBUG
 500 static const char *ucimap_type_names[] = {
 501         [UCIMAP_STRING] = "string",
 502         [UCIMAP_INT] = "integer",
 503         [UCIMAP_BOOL] = "boolean",
 504         [UCIMAP_SECTION] = "section",
 505         [UCIMAP_LIST] = "list",
 506 };
 507
 508 static const char *
 509 ucimap_get_type_name(int type)
 510 {
 511         static char buf[32];
 512         const char *name;
 513
 514         if (ucimap_is_list(type))
 515                 return ucimap_type_names[UCIMAP_LIST];
 516
 517         name = ucimap_type_names[type & UCIMAP_SUBTYPE];
 518         if (!name) {
 519                 sprintf(buf, "Unknown (%d)", type & UCIMAP_SUBTYPE);
 520                 name = buf;
 521         }
 522
 523         return name;
 524 }
 525 #endif
 526
 527 static bool
 528 ucimap_check_optmap_type(struct uci_sectionmap *sm, struct uci_optmap *om)
 529 {
 530         unsigned int type;
 531
 532         if (unlikely(sm->type_name != om->type_name) &&
 533             unlikely(strcmp(sm->type_name, om->type_name) != 0)) {
 534                 DPRINTF("Option '%s' of section type '%s' refereces unknown "
 535                         "section type '%s', should be '%s'.\n",
 536                         om->name, sm->type, om->type_name, sm->type_name);
 537                 return false;
 538         }
 539
 540         if (om->detected_type < 0)
 541                 return true;
 542
 543         if (ucimap_is_custom(om->type))
 544                 return true;
 545
 546         if (ucimap_is_list(om->type) !=
 547             ucimap_is_list(om->detected_type))
 548                 goto failed;
 549
 550         if (ucimap_is_list(om->type))
 551                 return true;
 552
 553         type = om->type & UCIMAP_SUBTYPE;
 554         switch(type) {
 555         case UCIMAP_STRING:
 556         case UCIMAP_INT:
 557         case UCIMAP_BOOL:
 558                 if (type != om->detected_type)
 559                         goto failed;
 560                 break;
 561         case UCIMAP_SECTION:
 562                 goto failed;
 563         default:
 564                 break;
 565         }
 566         return true;
 567
 568 failed:
 569         DPRINTF("Invalid type in option '%s' of section type '%s', "
 570                 "declared type is %s, detected type is %s\n",
 571                 om->name, sm->type,
 572                 ucimap_get_type_name(om->type),
 573                 ucimap_get_type_name(om->detected_type));
 574         return false;
 575 }
 576
 577 static void
 578 ucimap_count_alloc(struct uci_optmap *om, int *n_alloc, int *n_custom)
 579 {
 580         if (ucimap_is_alloc(om->type))
 581                 (*n_alloc)++;
 582         else if (ucimap_is_custom(om->type) && om->free)
 583                 (*n_custom)++;
 584 }
 585
 586 int
 587 ucimap_parse_section(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 588 {
 589         struct uci_optmap *om;
 590         char *section_name;
 591         void *section;
 592         int n_alloc = 2;
 593         int n_alloc_custom = 0;
 594         int err;
 595
 596         sd->map = map;
 597         sd->sm = sm;
 598
 599         ucimap_foreach_option(sm, om) {
 600                 if (!ucimap_check_optmap_type(sm, om))
 601                         continue;
 602
 603                 if (ucimap_is_list(om->type)) {
 604                         union ucimap_data *data;
 605                         struct uci_element *e;
 606                         int n_elements = 0;
 607                         int n_elements_alloc = 0;
 608                         int n_elements_custom = 0;
 609                         int size;
 610
 611                         data = ucimap_get_data(sd, om);
 612                         uci_foreach_element(&s->options, e) {
 613                                 struct uci_option *o = uci_to_option(e);
 614                                 struct uci_element *tmp;
 615
 616                                 if (strcmp(e->name, om->name) != 0)
 617                                         continue;
 618
 619                                 if (o->type == UCI_TYPE_LIST) {
 620                                         uci_foreach_element(&o->v.list, tmp) {
 621                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 622                                                 n_elements++;
 623                                         }
 624                                 } else if ((o->type == UCI_TYPE_STRING) &&
 625                                            ucimap_is_list_auto(om->type)) {
 626                                         const char *data = o->v.string;
 627                                         do {
 628                                                 while (isspace(*data))
 629                                                         data++;
 630
 631                                                 if (!*data)
 632                                                         break;
 633
 634                                                 n_elements++;
 635                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 636
 637                                                 while (*data && !isspace(*data))
 638                                                         data++;
 639                                         } while (*data);
 640
 641                                         /* for the duplicated data string */
 642                                         if (n_elements)
 643                                                 n_alloc++;
 644                                 }
 645                                 break;
 646                         }
 647                         /* add one more for the ucimap_list */
 648                         n_alloc += n_elements_alloc + 1;
 649                         n_alloc_custom += n_elements_custom;
 650                         size = sizeof(struct ucimap_list) +
 651                                 n_elements * sizeof(union ucimap_data);
 652
 653                         data->list = malloc(size);
 654                         if (!data->list)
 655                                 goto error_mem;
 656
 657                         memset(data->list, 0, size);
 658                         data->list->size = n_elements;
 659                 } else {
 660                         ucimap_count_alloc(om, &n_alloc, &n_alloc_custom);
 661                 }
 662         }
 663
 664         sd->allocmap = calloc(n_alloc, sizeof(struct ucimap_alloc));
 665         if (!sd->allocmap)
 666                 goto error_mem;
 667
 668         if (n_alloc_custom > 0) {
 669                 sd->alloc_custom = calloc(n_alloc_custom, sizeof(struct ucimap_alloc_custom));
 670                 if (!sd->alloc_custom)
 671                         goto error_mem;
 672         }
 673
 674         section_name = strdup(s->e.name);
 675         if (!section_name)
 676                 goto error_mem;
 677
 678         sd->section_name = section_name;
 679
 680         sd->cmap = calloc(1, BITFIELD_SIZE(sm->n_options));
 681         if (!sd->cmap)
 682                 goto error_mem;
 683
 684         ucimap_add_alloc(sd, (void *)section_name);
 685         ucimap_add_alloc(sd, (void *)sd->cmap);
 686         ucimap_foreach_option(sm, om) {
 687                 if (!ucimap_is_list(om->type))
 688                         continue;
 689
 690                 ucimap_add_alloc(sd, ucimap_get_data(sd, om)->list);
 691         }
 692
 693         section = ucimap_section_ptr(sd);
 694         err = sm->init(map, section, s);
 695         if (err)
 696                 goto error;
 697
 698         if (map->parsed) {
 699                 ucimap_add_section(sd);
 700         } else {
 701                 ucimap_add_section_list(map, sd);
 702         }
 703
 704         err = ucimap_parse_options(map, sm, sd, s);
 705         if (err)
 706                 goto error;
 707
 708         return 0;
 709
 710 error_mem:
 711         if (sd->allocmap)
 712                 free(sd->allocmap);
 713         free(sd);
 714         return UCI_ERR_MEM;
 715
 716 error:
 717         ucimap_free_section(map, sd);
 718         return err;
 719 }
 720
 721 static int
 722 ucimap_fill_ptr(struct uci_ptr *ptr, struct uci_section *s, const char *option)
 723 {
 724         struct uci_package *p = s->package;
 725
 726         memset(ptr, 0, sizeof(struct uci_ptr));
 727
 728         ptr->package = p->e.name;
 729         ptr->p = p;
 730
 731         ptr->section = s->e.name;
 732         ptr->s = s;
 733
 734         ptr->option = option;
 735         return uci_lookup_ptr(p->ctx, ptr, NULL, false);
 736 }
 737
 738 void
 739 ucimap_set_changed(struct ucimap_section_data *sd, void *field)
 740 {
 741         void *section = ucimap_section_ptr(sd);
 742         struct uci_sectionmap *sm = sd->sm;
 743         struct uci_optmap *om;
 744         int ofs = (char *)field - (char *)section;
 745         int i = 0;
 746
 747         ucimap_foreach_option(sm, om) {
 748                 if (om->offset == ofs) {
 749                         SET_BIT(sd->cmap, i);
 750                         break;
 751                 }
 752                 i++;
 753         }
 754 }
 755
 756 static char *
 757 ucimap_data_to_string(struct ucimap_section_data *sd, struct uci_optmap *om, union ucimap_data *data)
 758 {
 759         static char buf[32];
 760         char *str = NULL;
 761
 762         switch(om->type & UCIMAP_SUBTYPE) {
 763         case UCIMAP_STRING:
 764                 str = data->s;
 765                 break;
 766         case UCIMAP_INT:
 767                 sprintf(buf, "%d", data->i);
 768                 str = buf;
 769                 break;
 770         case UCIMAP_BOOL:
 771                 sprintf(buf, "%d", !!data->b);
 772                 str = buf;
 773                 break;
 774         case UCIMAP_SECTION:
 775                 if (data->ptr)
 776                         str = (char *) ucimap_ptr_section(om->data.sm, data->ptr)->section_name;
 777                 else
 778                         str = "";
 779                 break;
 780         case UCIMAP_CUSTOM:
 781                 break;
 782         default:
 783                 return NULL;
 784         }
 785
 786         if (om->format) {
 787                 if (om->format(ucimap_section_ptr(sd), om, data, &str) < 0)
 788                         return NULL;
 789
 790                 if (!str)
 791                         str = "";
 792         }
 793         return str;
 794 }
 795
 796 int
 797 ucimap_store_section(struct uci_map *map, struct uci_package *p, struct ucimap_section_data *sd)
 798 {
 799         struct uci_sectionmap *sm = sd->sm;
 800         struct uci_section *s = NULL;
 801         struct uci_optmap *om;
 802         struct uci_element *e;
 803         struct uci_ptr ptr;
 804         int i = 0;
 805         int ret;
 806
 807         uci_foreach_element(&p->sections, e) {
 808                 if (!strcmp(e->name, sd->section_name)) {
 809                         s = uci_to_section(e);
 810                         break;
 811                 }
 812         }
 813         if (!s)
 814                 return UCI_ERR_NOTFOUND;
 815
 816         ucimap_foreach_option(sm, om) {
 817                 union ucimap_data *data;
 818
 819                 i++;
 820                 data = ucimap_get_data(sd, om);
 821                 if (!TEST_BIT(sd->cmap, i - 1))
 822                         continue;
 823
 824                 ucimap_fill_ptr(&ptr, s, om->name);
 825                 if (ucimap_is_list(om->type)) {
 826                         struct ucimap_list *list = data->list;
 827                         bool first = true;
 828                         int j;
 829
 830                         for (j = 0; j < list->n_items; j++) {
 831                                 ptr.value = ucimap_data_to_string(sd, om, &list->item[j]);
 832                                 if (!ptr.value)
 833                                         continue;
 834
 835                                 if (first) {
 836                                         ret = uci_set(s->package->ctx, &ptr);
 837                                         first = false;
 838                                 } else {
 839                                         ret = uci_add_list(s->package->ctx, &ptr);
 840                                 }
 841                                 if (ret)
 842                                         return ret;
 843                         }
 844                 } else {
 845                         ptr.value = ucimap_data_to_string(sd, om, data);
 846                         if (!ptr.value)
 847                                 continue;
 848
 849                         ret = uci_set(s->package->ctx, &ptr);
 850                         if (ret)
 851                                 return ret;
 852                 }
 853
 854                 CLR_BIT(sd->cmap, i - 1);
 855         }
 856
 857         return 0;
 858 }
 859
 860 void
 861 ucimap_parse(struct uci_map *map, struct uci_package *pkg)
 862 {
 863         struct uci_element *e;
 864         struct ucimap_section_data *sd, **sd_tail;
 865         struct ucimap_fixup *f;
 866         int i;
 867
 868         sd_tail = map->sdata_tail;
 869         map->parsed = false;
 870         map->sdata_tail = &map->pending;
 871         uci_foreach_element(&pkg->sections, e) {
 872                 struct uci_section *s = uci_to_section(e);
 873
 874                 for (i = 0; i < map->n_sections; i++) {
 875                         struct uci_sectionmap *sm = map->sections[i];
 876                         struct ucimap_section_data *sd;
 877
 878                         if (strcmp(s->type, map->sections[i]->type) != 0)
 879                                 continue;
 880
 881                         if (sm->alloc) {
 882                                 sd = sm->alloc(map, sm, s);
 883                                 memset(sd, 0, sizeof(struct ucimap_section_data));
 884                         } else {
 885                                 sd = malloc(sm->alloc_len);
 886                                 memset(sd, 0, sm->alloc_len);
 887                         }
 888                         if (!sd)
 889                                 continue;
 890
 891                         ucimap_parse_section(map, sm, sd, s);
 892                 }
 893         }
 894         if (!map->parsed) {
 895                 map->parsed = true;
 896                 map->sdata_tail = sd_tail;
 897         }
 898
 899         f = map->fixup;
 900         while (f) {
 901                 struct ucimap_fixup *next = f->next;
 902                 ucimap_handle_fixup(map, f);
 903                 free(f);
 904                 f = next;
 905         }
 906         map->fixup_tail = &map->fixup;
 907         map->fixup = NULL;
 908
 909         sd = map->pending;
 910         while (sd) {
 911                 struct ucimap_section_data *next = sd->next;
 912                 ucimap_add_section(sd);
 913                 sd = next;
 914         }
 915         map->pending = NULL;
 916 }