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 Lesser 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, *sd_next;
 166
 167         for (sd = map->sdata; sd; sd = sd_next) {
 168                 sd_next = sd->next;
 169                 ucimap_free_section(map, sd);
 170         }
 171 }
 172
 173 static void *
 174 ucimap_find_section(struct uci_map *map, struct ucimap_fixup *f)
 175 {
 176         struct ucimap_section_data *sd;
 177
 178         for (sd = map->sdata; sd; sd = sd->next) {
 179                 if (sd->sm != f->sm)
 180                         continue;
 181                 if (strcmp(f->name, sd->section_name) != 0)
 182                         continue;
 183                 return ucimap_section_ptr(sd);
 184         }
 185         for (sd = map->pending; sd; sd = sd->next) {
 186                 if (sd->sm != f->sm)
 187                         continue;
 188                 if (strcmp(f->name, sd->section_name) != 0)
 189                         continue;
 190                 return ucimap_section_ptr(sd);
 191         }
 192         return NULL;
 193 }
 194
 195 static union ucimap_data *
 196 ucimap_list_append(struct ucimap_list *list)
 197 {
 198         if (unlikely(list->size <= list->n_items)) {
 199                 /* should not happen */
 200                 DPRINTF("ERROR: overflow while filling a list (size=%d)\n", list->size);
 201                 return NULL;
 202         }
 203         return &list->item[list->n_items++];
 204 }
 205
 206
 207 static bool
 208 ucimap_handle_fixup(struct uci_map *map, struct ucimap_fixup *f)
 209 {
 210         void *ptr = ucimap_find_section(map, f);
 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                 data = ucimap_list_append(f->data->list);
 222                 if (!data)
 223                         return false;
 224
 225                 data->ptr = ptr;
 226                 break;
 227         }
 228         return true;
 229 }
 230
 231 void
 232 ucimap_free_item(struct ucimap_section_data *sd, void *item)
 233 {
 234         struct ucimap_alloc_custom *ac;
 235         struct ucimap_alloc *a;
 236         void *ptr = *((void **) item);
 237         int i;
 238
 239         if (!ptr)
 240                 return;
 241
 242         *((void **)item) = NULL;
 243         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 244                 if (a->ptr != ptr)
 245                         continue;
 246
 247                 if (i != sd->allocmap_len - 1)
 248                         a->ptr = sd->allocmap[sd->allocmap_len - 1].ptr;
 249
 250                 sd->allocmap_len--;
 251                 return;
 252         }
 253
 254         for (i = 0, ac = sd->alloc_custom; i < sd->alloc_custom_len; i++, ac++) {
 255                 if (ac->ptr != ptr)
 256                         continue;
 257
 258                 if (i != sd->alloc_custom_len - 1)
 259                         memcpy(ac, &sd->alloc_custom[sd->alloc_custom_len - 1],
 260                                 sizeof(struct ucimap_alloc_custom));
 261
 262                 ac->om->free(ac->section, ac->om, ac->ptr);
 263                 sd->alloc_custom_len--;
 264                 return;
 265         }
 266 }
 267
 268 int
 269 ucimap_resize_list(struct ucimap_section_data *sd, struct ucimap_list **list, int items)
 270 {
 271         struct ucimap_list *new;
 272         struct ucimap_alloc *a;
 273         int i, offset = 0;
 274         int size = sizeof(struct ucimap_list) + items * sizeof(union ucimap_data);
 275
 276         if (!*list) {
 277                 new = calloc(1, size);
 278
 279                 ucimap_add_alloc(sd, new);
 280                 goto set;
 281         }
 282
 283         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 284                 if (a->ptr != *list)
 285                         continue;
 286
 287                 goto realloc;
 288         }
 289         return -ENOENT;
 290
 291 realloc:
 292         if (items > (*list)->size)
 293                 offset = (items - (*list)->size) * sizeof(union ucimap_data);
 294
 295         a->ptr = realloc(a->ptr, size);
 296         if (offset)
 297                 memset((char *) a->ptr + offset, 0, size - offset);
 298         new = a->ptr;
 299
 300 set:
 301         new->size = items;
 302         *list = new;
 303         return 0;
 304 }
 305
 306 static void
 307 ucimap_add_fixup(struct ucimap_section_data *sd, union ucimap_data *data, struct uci_optmap *om, const char *str)
 308 {
 309         struct ucimap_fixup *f, tmp;
 310         struct uci_map *map = sd->map;
 311
 312         tmp.sm = om->data.sm;
 313         tmp.name = str;
 314         tmp.type = om->type;
 315         tmp.data = data;
 316         if (ucimap_handle_fixup(map, &tmp))
 317                 return;
 318
 319         f = malloc(sizeof(struct ucimap_fixup));
 320         if (!f)
 321                 return;
 322
 323         memcpy(f, &tmp, sizeof(tmp));
 324         f->next = NULL;
 325         *map->fixup_tail = f;
 326         map->fixup_tail = &f->next;
 327 }
 328
 329 static void
 330 ucimap_add_custom_alloc(struct ucimap_section_data *sd, struct uci_optmap *om, void *ptr)
 331 {
 332         struct ucimap_alloc_custom *a = &sd->alloc_custom[sd->alloc_custom_len++];
 333
 334         a->section = ucimap_section_ptr(sd);
 335         a->om = om;
 336         a->ptr = ptr;
 337 }
 338
 339 static void
 340 ucimap_add_value(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 341 {
 342         union ucimap_data tdata = *data;
 343         char *eptr = NULL;
 344         long lval;
 345         char *s;
 346         int val;
 347
 348         if (ucimap_is_list(om->type) && !ucimap_is_fixup(om->type)) {
 349                 data = ucimap_list_append(data->list);
 350                 if (!data)
 351                         return;
 352         }
 353
 354         switch(om->type & UCIMAP_SUBTYPE) {
 355         case UCIMAP_STRING:
 356                 if ((om->data.s.maxlen > 0) &&
 357                         (strlen(str) > om->data.s.maxlen))
 358                         return;
 359
 360                 s = strdup(str);
 361                 tdata.s = s;
 362                 ucimap_add_alloc(sd, s);
 363                 break;
 364         case UCIMAP_BOOL:
 365                 if (!strcmp(str, "on"))
 366                         val = true;
 367                 else if (!strcmp(str, "1"))
 368                         val = true;
 369                 else if (!strcmp(str, "enabled"))
 370                         val = true;
 371                 else if (!strcmp(str, "off"))
 372                         val = false;
 373                 else if (!strcmp(str, "0"))
 374                         val = false;
 375                 else if (!strcmp(str, "disabled"))
 376                         val = false;
 377                 else
 378                         return;
 379
 380                 tdata.b = val;
 381                 break;
 382         case UCIMAP_INT:
 383                 lval = strtol(str, &eptr, om->data.i.base);
 384                 if (lval < INT_MIN || lval > INT_MAX)
 385                         return;
 386
 387                 if (!eptr || *eptr == '\0')
 388                         tdata.i = (int) lval;
 389                 else
 390                         return;
 391                 break;
 392         case UCIMAP_SECTION:
 393                 ucimap_add_fixup(sd, data, om, str);
 394                 return;
 395         case UCIMAP_CUSTOM:
 396                 break;
 397         }
 398         if (om->parse) {
 399                 if (om->parse(ucimap_section_ptr(sd), om, data, str) < 0)
 400                         return;
 401                 if (ucimap_is_custom(om->type) && om->free) {
 402                         if (tdata.ptr != data->ptr)
 403                                 ucimap_add_custom_alloc(sd, om, data->ptr);
 404                 }
 405         }
 406         if (ucimap_is_custom(om->type))
 407                 return;
 408         memcpy(data, &tdata, sizeof(union ucimap_data));
 409 }
 410
 411
 412 static void
 413 ucimap_convert_list(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 414 {
 415         char *s, *p;
 416
 417         s = strdup(str);
 418         if (!s)
 419                 return;
 420
 421         ucimap_add_alloc(sd, s);
 422
 423         do {
 424                 while (isspace(*s))
 425                         s++;
 426
 427                 if (!*s)
 428                         break;
 429
 430                 p = s;
 431                 while (*s && !isspace(*s))
 432                         s++;
 433
 434                 if (isspace(*s)) {
 435                         *s = 0;
 436                         s++;
 437                 }
 438
 439                 ucimap_add_value(data, om, sd, p);
 440         } while (*s);
 441 }
 442
 443 static int
 444 ucimap_parse_options(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 445 {
 446         struct uci_element *e, *l;
 447         struct uci_option *o;
 448         union ucimap_data *data;
 449
 450         uci_foreach_element(&s->options, e) {
 451                 struct uci_optmap *om = NULL, *tmp;
 452
 453                 ucimap_foreach_option(sm, tmp) {
 454                         if (strcmp(e->name, tmp->name) == 0) {
 455                                 om = tmp;
 456                                 break;
 457                         }
 458                 }
 459                 if (!om)
 460                         continue;
 461
 462                 data = ucimap_get_data(sd, om);
 463                 o = uci_to_option(e);
 464                 if ((o->type == UCI_TYPE_STRING) && ucimap_is_simple(om->type)) {
 465                         ucimap_add_value(data, om, sd, o->v.string);
 466                 } else if ((o->type == UCI_TYPE_LIST) && ucimap_is_list(om->type)) {
 467                         uci_foreach_element(&o->v.list, l) {
 468                                 ucimap_add_value(data, om, sd, l->name);
 469                         }
 470                 } else if ((o->type == UCI_TYPE_STRING) && ucimap_is_list_auto(om->type)) {
 471                         ucimap_convert_list(data, om, sd, o->v.string);
 472                 }
 473         }
 474
 475         return 0;
 476 }
 477
 478 static void
 479 ucimap_add_section_list(struct uci_map *map, struct ucimap_section_data *sd)
 480 {
 481         sd->ref = map->sdata_tail;
 482         *sd->ref = sd;
 483         map->sdata_tail = &sd->next;
 484 }
 485
 486 static void
 487 ucimap_add_section(struct ucimap_section_data *sd)
 488 {
 489         struct uci_map *map = sd->map;
 490
 491         sd->next = NULL;
 492         if (sd->sm->add(map, ucimap_section_ptr(sd)) < 0)
 493                 ucimap_free_section(map, sd);
 494         else
 495                 ucimap_add_section_list(map, sd);
 496 }
 497
 498 #ifdef UCI_DEBUG
 499 static const char *ucimap_type_names[] = {
 500         [UCIMAP_STRING] = "string",
 501         [UCIMAP_INT] = "integer",
 502         [UCIMAP_BOOL] = "boolean",
 503         [UCIMAP_SECTION] = "section",
 504         [UCIMAP_LIST] = "list",
 505 };
 506
 507 static const char *
 508 ucimap_get_type_name(int type)
 509 {
 510         static char buf[32];
 511         const char *name;
 512
 513         if (ucimap_is_list(type))
 514                 return ucimap_type_names[UCIMAP_LIST];
 515
 516         name = ucimap_type_names[type & UCIMAP_SUBTYPE];
 517         if (!name) {
 518                 sprintf(buf, "Unknown (%d)", type & UCIMAP_SUBTYPE);
 519                 name = buf;
 520         }
 521
 522         return name;
 523 }
 524 #endif
 525
 526 static bool
 527 ucimap_check_optmap_type(struct uci_sectionmap *sm, struct uci_optmap *om)
 528 {
 529         unsigned int type;
 530
 531         if (unlikely(sm->type_name != om->type_name) &&
 532             unlikely(strcmp(sm->type_name, om->type_name) != 0)) {
 533                 DPRINTF("Option '%s' of section type '%s' refereces unknown "
 534                         "section type '%s', should be '%s'.\n",
 535                         om->name, sm->type, om->type_name, sm->type_name);
 536                 return false;
 537         }
 538
 539         if (om->detected_type < 0)
 540                 return true;
 541
 542         if (ucimap_is_custom(om->type))
 543                 return true;
 544
 545         if (ucimap_is_list(om->type) !=
 546             ucimap_is_list(om->detected_type))
 547                 goto failed;
 548
 549         if (ucimap_is_list(om->type))
 550                 return true;
 551
 552         type = om->type & UCIMAP_SUBTYPE;
 553         switch(type) {
 554         case UCIMAP_STRING:
 555         case UCIMAP_INT:
 556         case UCIMAP_BOOL:
 557                 if (type != om->detected_type)
 558                         goto failed;
 559                 break;
 560         case UCIMAP_SECTION:
 561                 goto failed;
 562         default:
 563                 break;
 564         }
 565         return true;
 566
 567 failed:
 568         DPRINTF("Invalid type in option '%s' of section type '%s', "
 569                 "declared type is %s, detected type is %s\n",
 570                 om->name, sm->type,
 571                 ucimap_get_type_name(om->type),
 572                 ucimap_get_type_name(om->detected_type));
 573         return false;
 574 }
 575
 576 static void
 577 ucimap_count_alloc(struct uci_optmap *om, int *n_alloc, int *n_custom)
 578 {
 579         if (ucimap_is_alloc(om->type))
 580                 (*n_alloc)++;
 581         else if (ucimap_is_custom(om->type) && om->free)
 582                 (*n_custom)++;
 583 }
 584
 585 int
 586 ucimap_parse_section(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 587 {
 588         struct uci_optmap *om;
 589         char *section_name;
 590         void *section;
 591         int n_alloc = 2;
 592         int n_alloc_custom = 0;
 593         int err;
 594
 595         sd->map = map;
 596         sd->sm = sm;
 597
 598         ucimap_foreach_option(sm, om) {
 599                 if (!ucimap_check_optmap_type(sm, om))
 600                         continue;
 601
 602                 if (ucimap_is_list(om->type)) {
 603                         union ucimap_data *data;
 604                         struct uci_element *e;
 605                         int n_elements = 0;
 606                         int n_elements_alloc = 0;
 607                         int n_elements_custom = 0;
 608                         int size;
 609
 610                         data = ucimap_get_data(sd, om);
 611                         uci_foreach_element(&s->options, e) {
 612                                 struct uci_option *o = uci_to_option(e);
 613                                 struct uci_element *tmp;
 614
 615                                 if (strcmp(e->name, om->name) != 0)
 616                                         continue;
 617
 618                                 if (o->type == UCI_TYPE_LIST) {
 619                                         uci_foreach_element(&o->v.list, tmp) {
 620                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 621                                                 n_elements++;
 622                                         }
 623                                 } else if ((o->type == UCI_TYPE_STRING) &&
 624                                            ucimap_is_list_auto(om->type)) {
 625                                         const char *data = o->v.string;
 626                                         do {
 627                                                 while (isspace(*data))
 628                                                         data++;
 629
 630                                                 if (!*data)
 631                                                         break;
 632
 633                                                 n_elements++;
 634                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 635
 636                                                 while (*data && !isspace(*data))
 637                                                         data++;
 638                                         } while (*data);
 639
 640                                         /* for the duplicated data string */
 641                                         if (n_elements)
 642                                                 n_alloc++;
 643                                 }
 644                                 break;
 645                         }
 646                         /* add one more for the ucimap_list */
 647                         n_alloc += n_elements_alloc + 1;
 648                         n_alloc_custom += n_elements_custom;
 649                         size = sizeof(struct ucimap_list) +
 650                                 n_elements * sizeof(union ucimap_data);
 651
 652                         data->list = malloc(size);
 653                         if (!data->list)
 654                                 goto error_mem;
 655
 656                         memset(data->list, 0, size);
 657                         data->list->size = n_elements;
 658                 } else {
 659                         ucimap_count_alloc(om, &n_alloc, &n_alloc_custom);
 660                 }
 661         }
 662
 663         sd->allocmap = calloc(n_alloc, sizeof(struct ucimap_alloc));
 664         if (!sd->allocmap)
 665                 goto error_mem;
 666
 667         if (n_alloc_custom > 0) {
 668                 sd->alloc_custom = calloc(n_alloc_custom, sizeof(struct ucimap_alloc_custom));
 669                 if (!sd->alloc_custom)
 670                         goto error_mem;
 671         }
 672
 673         section_name = strdup(s->e.name);
 674         if (!section_name)
 675                 goto error_mem;
 676
 677         sd->section_name = section_name;
 678
 679         sd->cmap = calloc(1, BITFIELD_SIZE(sm->n_options));
 680         if (!sd->cmap)
 681                 goto error_mem;
 682
 683         ucimap_add_alloc(sd, (void *)section_name);
 684         ucimap_add_alloc(sd, (void *)sd->cmap);
 685         ucimap_foreach_option(sm, om) {
 686                 if (!ucimap_is_list(om->type))
 687                         continue;
 688
 689                 ucimap_add_alloc(sd, ucimap_get_data(sd, om)->list);
 690         }
 691
 692         section = ucimap_section_ptr(sd);
 693         err = sm->init(map, section, s);
 694         if (err)
 695                 goto error;
 696
 697         if (map->parsed) {
 698                 ucimap_add_section(sd);
 699         } else {
 700                 ucimap_add_section_list(map, sd);
 701         }
 702
 703         err = ucimap_parse_options(map, sm, sd, s);
 704         if (err)
 705                 goto error;
 706
 707         return 0;
 708
 709 error_mem:
 710         if (sd->allocmap)
 711                 free(sd->allocmap);
 712         free(sd);
 713         return UCI_ERR_MEM;
 714
 715 error:
 716         ucimap_free_section(map, sd);
 717         return err;
 718 }
 719
 720 static int
 721 ucimap_fill_ptr(struct uci_ptr *ptr, struct uci_section *s, const char *option)
 722 {
 723         struct uci_package *p = s->package;
 724
 725         memset(ptr, 0, sizeof(struct uci_ptr));
 726
 727         ptr->package = p->e.name;
 728         ptr->p = p;
 729
 730         ptr->section = s->e.name;
 731         ptr->s = s;
 732
 733         ptr->option = option;
 734         return uci_lookup_ptr(p->ctx, ptr, NULL, false);
 735 }
 736
 737 void
 738 ucimap_set_changed(struct ucimap_section_data *sd, void *field)
 739 {
 740         void *section = ucimap_section_ptr(sd);
 741         struct uci_sectionmap *sm = sd->sm;
 742         struct uci_optmap *om;
 743         int ofs = (char *)field - (char *)section;
 744         int i = 0;
 745
 746         ucimap_foreach_option(sm, om) {
 747                 if (om->offset == ofs) {
 748                         SET_BIT(sd->cmap, i);
 749                         break;
 750                 }
 751                 i++;
 752         }
 753 }
 754
 755 static char *
 756 ucimap_data_to_string(struct ucimap_section_data *sd, struct uci_optmap *om, union ucimap_data *data)
 757 {
 758         static char buf[32];
 759         char *str = NULL;
 760
 761         switch(om->type & UCIMAP_SUBTYPE) {
 762         case UCIMAP_STRING:
 763                 str = data->s;
 764                 break;
 765         case UCIMAP_INT:
 766                 sprintf(buf, "%d", data->i);
 767                 str = buf;
 768                 break;
 769         case UCIMAP_BOOL:
 770                 sprintf(buf, "%d", !!data->b);
 771                 str = buf;
 772                 break;
 773         case UCIMAP_SECTION:
 774                 if (data->ptr)
 775                         str = (char *) ucimap_ptr_section(om->data.sm, data->ptr)->section_name;
 776                 else
 777                         str = "";
 778                 break;
 779         case UCIMAP_CUSTOM:
 780                 break;
 781         default:
 782                 return NULL;
 783         }
 784
 785         if (om->format) {
 786                 if (om->format(ucimap_section_ptr(sd), om, data, &str) < 0)
 787                         return NULL;
 788
 789                 if (!str)
 790                         str = "";
 791         }
 792         return str;
 793 }
 794
 795 int
 796 ucimap_store_section(struct uci_map *map, struct uci_package *p, struct ucimap_section_data *sd)
 797 {
 798         struct uci_sectionmap *sm = sd->sm;
 799         struct uci_section *s = NULL;
 800         struct uci_optmap *om;
 801         struct uci_element *e;
 802         struct uci_ptr ptr;
 803         int i = 0;
 804         int ret;
 805
 806         uci_foreach_element(&p->sections, e) {
 807                 if (!strcmp(e->name, sd->section_name)) {
 808                         s = uci_to_section(e);
 809                         break;
 810                 }
 811         }
 812         if (!s)
 813                 return UCI_ERR_NOTFOUND;
 814
 815         ucimap_foreach_option(sm, om) {
 816                 union ucimap_data *data;
 817
 818                 i++;
 819                 data = ucimap_get_data(sd, om);
 820                 if (!TEST_BIT(sd->cmap, i - 1))
 821                         continue;
 822
 823                 ucimap_fill_ptr(&ptr, s, om->name);
 824                 if (ucimap_is_list(om->type)) {
 825                         struct ucimap_list *list = data->list;
 826                         bool first = true;
 827                         int j;
 828
 829                         for (j = 0; j < list->n_items; j++) {
 830                                 ptr.value = ucimap_data_to_string(sd, om, &list->item[j]);
 831                                 if (!ptr.value)
 832                                         continue;
 833
 834                                 if (first) {
 835                                         ret = uci_set(s->package->ctx, &ptr);
 836                                         first = false;
 837                                 } else {
 838                                         ret = uci_add_list(s->package->ctx, &ptr);
 839                                 }
 840                                 if (ret)
 841                                         return ret;
 842                         }
 843                 } else {
 844                         ptr.value = ucimap_data_to_string(sd, om, data);
 845                         if (!ptr.value)
 846                                 continue;
 847
 848                         ret = uci_set(s->package->ctx, &ptr);
 849                         if (ret)
 850                                 return ret;
 851                 }
 852
 853                 CLR_BIT(sd->cmap, i - 1);
 854         }
 855
 856         return 0;
 857 }
 858
 859 void
 860 ucimap_parse(struct uci_map *map, struct uci_package *pkg)
 861 {
 862         struct uci_element *e;
 863         struct ucimap_section_data *sd, **sd_tail;
 864         struct ucimap_fixup *f;
 865         int i;
 866
 867         sd_tail = map->sdata_tail;
 868         map->parsed = false;
 869         map->sdata_tail = &map->pending;
 870         uci_foreach_element(&pkg->sections, e) {
 871                 struct uci_section *s = uci_to_section(e);
 872
 873                 for (i = 0; i < map->n_sections; i++) {
 874                         struct uci_sectionmap *sm = map->sections[i];
 875                         struct ucimap_section_data *sd;
 876
 877                         if (strcmp(s->type, map->sections[i]->type) != 0)
 878                                 continue;
 879
 880                         if (sm->alloc) {
 881                                 sd = sm->alloc(map, sm, s);
 882                                 memset(sd, 0, sizeof(struct ucimap_section_data));
 883                         } else {
 884                                 sd = malloc(sm->alloc_len);
 885                                 memset(sd, 0, sm->alloc_len);
 886                                 sd = ucimap_ptr_section(sm, sd);
 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 }