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                 if (!new)
 279                         return -ENOMEM;
 280
 281                 ucimap_add_alloc(sd, new);
 282                 goto set;
 283         }
 284
 285         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 286                 if (a->ptr != *list)
 287                         continue;
 288
 289                 goto realloc;
 290         }
 291         return -ENOENT;
 292
 293 realloc:
 294         if (items > (*list)->size)
 295                 offset = (items - (*list)->size) * sizeof(union ucimap_data);
 296
 297         a->ptr = realloc(a->ptr, size);
 298         if (offset)
 299                 memset((char *) a->ptr + offset, 0, size - offset);
 300         new = a->ptr;
 301
 302 set:
 303         new->size = items;
 304         *list = new;
 305         return 0;
 306 }
 307
 308 static void
 309 ucimap_add_fixup(struct ucimap_section_data *sd, union ucimap_data *data, struct uci_optmap *om, const char *str)
 310 {
 311         struct ucimap_fixup *f, tmp;
 312         struct uci_map *map = sd->map;
 313
 314         tmp.sm = om->data.sm;
 315         tmp.name = str;
 316         tmp.type = om->type;
 317         tmp.data = data;
 318         if (ucimap_handle_fixup(map, &tmp))
 319                 return;
 320
 321         f = malloc(sizeof(struct ucimap_fixup));
 322         if (!f)
 323                 return;
 324
 325         memcpy(f, &tmp, sizeof(tmp));
 326         f->next = NULL;
 327         *map->fixup_tail = f;
 328         map->fixup_tail = &f->next;
 329 }
 330
 331 static void
 332 ucimap_add_custom_alloc(struct ucimap_section_data *sd, struct uci_optmap *om, void *ptr)
 333 {
 334         struct ucimap_alloc_custom *a = &sd->alloc_custom[sd->alloc_custom_len++];
 335
 336         a->section = ucimap_section_ptr(sd);
 337         a->om = om;
 338         a->ptr = ptr;
 339 }
 340
 341 static void
 342 ucimap_add_value(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 343 {
 344         union ucimap_data tdata = *data;
 345         char *eptr = NULL;
 346         long lval;
 347         char *s;
 348         int val;
 349
 350         if (ucimap_is_list(om->type) && !ucimap_is_fixup(om->type)) {
 351                 data = ucimap_list_append(data->list);
 352                 if (!data)
 353                         return;
 354         }
 355
 356         switch(om->type & UCIMAP_SUBTYPE) {
 357         case UCIMAP_STRING:
 358                 if ((om->data.s.maxlen > 0) &&
 359                         (strlen(str) > om->data.s.maxlen))
 360                         return;
 361
 362                 s = strdup(str);
 363                 tdata.s = s;
 364                 ucimap_add_alloc(sd, s);
 365                 break;
 366         case UCIMAP_BOOL:
 367                 if (!strcmp(str, "on"))
 368                         val = true;
 369                 else if (!strcmp(str, "1"))
 370                         val = true;
 371                 else if (!strcmp(str, "enabled"))
 372                         val = true;
 373                 else if (!strcmp(str, "off"))
 374                         val = false;
 375                 else if (!strcmp(str, "0"))
 376                         val = false;
 377                 else if (!strcmp(str, "disabled"))
 378                         val = false;
 379                 else
 380                         return;
 381
 382                 tdata.b = val;
 383                 break;
 384         case UCIMAP_INT:
 385                 lval = strtol(str, &eptr, om->data.i.base);
 386                 if (lval < INT_MIN || lval > INT_MAX)
 387                         return;
 388
 389                 if (!eptr || *eptr == '\0')
 390                         tdata.i = (int) lval;
 391                 else
 392                         return;
 393                 break;
 394         case UCIMAP_SECTION:
 395                 ucimap_add_fixup(sd, data, om, str);
 396                 return;
 397         case UCIMAP_CUSTOM:
 398                 break;
 399         }
 400         if (om->parse) {
 401                 if (om->parse(ucimap_section_ptr(sd), om, data, str) < 0)
 402                         return;
 403                 if (ucimap_is_custom(om->type) && om->free) {
 404                         if (tdata.ptr != data->ptr)
 405                                 ucimap_add_custom_alloc(sd, om, data->ptr);
 406                 }
 407         }
 408         if (ucimap_is_custom(om->type))
 409                 return;
 410         memcpy(data, &tdata, sizeof(union ucimap_data));
 411 }
 412
 413
 414 static void
 415 ucimap_convert_list(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 416 {
 417         char *s, *p;
 418
 419         s = strdup(str);
 420         if (!s)
 421                 return;
 422
 423         ucimap_add_alloc(sd, s);
 424
 425         do {
 426                 while (isspace(*s))
 427                         s++;
 428
 429                 if (!*s)
 430                         break;
 431
 432                 p = s;
 433                 while (*s && !isspace(*s))
 434                         s++;
 435
 436                 if (isspace(*s)) {
 437                         *s = 0;
 438                         s++;
 439                 }
 440
 441                 ucimap_add_value(data, om, sd, p);
 442         } while (*s);
 443 }
 444
 445 static int
 446 ucimap_parse_options(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 447 {
 448         struct uci_element *e, *l;
 449         struct uci_option *o;
 450         union ucimap_data *data;
 451
 452         uci_foreach_element(&s->options, e) {
 453                 struct uci_optmap *om = NULL, *tmp;
 454
 455                 ucimap_foreach_option(sm, tmp) {
 456                         if (strcmp(e->name, tmp->name) == 0) {
 457                                 om = tmp;
 458                                 break;
 459                         }
 460                 }
 461                 if (!om)
 462                         continue;
 463
 464                 data = ucimap_get_data(sd, om);
 465                 o = uci_to_option(e);
 466                 if ((o->type == UCI_TYPE_STRING) && ucimap_is_simple(om->type)) {
 467                         ucimap_add_value(data, om, sd, o->v.string);
 468                 } else if ((o->type == UCI_TYPE_LIST) && ucimap_is_list(om->type)) {
 469                         uci_foreach_element(&o->v.list, l) {
 470                                 ucimap_add_value(data, om, sd, l->name);
 471                         }
 472                 } else if ((o->type == UCI_TYPE_STRING) && ucimap_is_list_auto(om->type)) {
 473                         ucimap_convert_list(data, om, sd, o->v.string);
 474                 }
 475         }
 476
 477         return 0;
 478 }
 479
 480 static void
 481 ucimap_add_section_list(struct uci_map *map, struct ucimap_section_data *sd)
 482 {
 483         sd->ref = map->sdata_tail;
 484         *sd->ref = sd;
 485         map->sdata_tail = &sd->next;
 486 }
 487
 488 static void
 489 ucimap_add_section(struct ucimap_section_data *sd)
 490 {
 491         struct uci_map *map = sd->map;
 492
 493         sd->next = NULL;
 494         if (sd->sm->add(map, ucimap_section_ptr(sd)) < 0)
 495                 ucimap_free_section(map, sd);
 496         else
 497                 ucimap_add_section_list(map, sd);
 498 }
 499
 500 #ifdef UCI_DEBUG
 501 static const char *ucimap_type_names[] = {
 502         [UCIMAP_STRING] = "string",
 503         [UCIMAP_INT] = "integer",
 504         [UCIMAP_BOOL] = "boolean",
 505         [UCIMAP_SECTION] = "section",
 506         [UCIMAP_LIST] = "list",
 507 };
 508
 509 static const char *
 510 ucimap_get_type_name(int type)
 511 {
 512         static char buf[32];
 513         const char *name;
 514
 515         if (ucimap_is_list(type))
 516                 return ucimap_type_names[UCIMAP_LIST];
 517
 518         name = ucimap_type_names[type & UCIMAP_SUBTYPE];
 519         if (!name) {
 520                 sprintf(buf, "Unknown (%d)", type & UCIMAP_SUBTYPE);
 521                 name = buf;
 522         }
 523
 524         return name;
 525 }
 526 #endif
 527
 528 static bool
 529 ucimap_check_optmap_type(struct uci_sectionmap *sm, struct uci_optmap *om)
 530 {
 531         unsigned int type;
 532
 533         if (unlikely(sm->type_name != om->type_name) &&
 534             unlikely(strcmp(sm->type_name, om->type_name) != 0)) {
 535                 DPRINTF("Option '%s' of section type '%s' refereces unknown "
 536                         "section type '%s', should be '%s'.\n",
 537                         om->name, sm->type, om->type_name, sm->type_name);
 538                 return false;
 539         }
 540
 541         if (om->detected_type < 0)
 542                 return true;
 543
 544         if (ucimap_is_custom(om->type))
 545                 return true;
 546
 547         if (ucimap_is_list(om->type) !=
 548             ucimap_is_list(om->detected_type))
 549                 goto failed;
 550
 551         if (ucimap_is_list(om->type))
 552                 return true;
 553
 554         type = om->type & UCIMAP_SUBTYPE;
 555         switch(type) {
 556         case UCIMAP_STRING:
 557         case UCIMAP_INT:
 558         case UCIMAP_BOOL:
 559                 if (type != om->detected_type)
 560                         goto failed;
 561                 break;
 562         case UCIMAP_SECTION:
 563                 goto failed;
 564         default:
 565                 break;
 566         }
 567         return true;
 568
 569 failed:
 570         DPRINTF("Invalid type in option '%s' of section type '%s', "
 571                 "declared type is %s, detected type is %s\n",
 572                 om->name, sm->type,
 573                 ucimap_get_type_name(om->type),
 574                 ucimap_get_type_name(om->detected_type));
 575         return false;
 576 }
 577
 578 static void
 579 ucimap_count_alloc(struct uci_optmap *om, int *n_alloc, int *n_custom)
 580 {
 581         if (ucimap_is_alloc(om->type))
 582                 (*n_alloc)++;
 583         else if (ucimap_is_custom(om->type) && om->free)
 584                 (*n_custom)++;
 585 }
 586
 587 int
 588 ucimap_parse_section(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 589 {
 590         struct uci_optmap *om;
 591         char *section_name;
 592         void *section;
 593         int n_alloc = 2;
 594         int n_alloc_custom = 0;
 595         int err;
 596
 597         sd->map = map;
 598         sd->sm = sm;
 599
 600         ucimap_foreach_option(sm, om) {
 601                 if (!ucimap_check_optmap_type(sm, om))
 602                         continue;
 603
 604                 if (ucimap_is_list(om->type)) {
 605                         union ucimap_data *data;
 606                         struct uci_element *e;
 607                         int n_elements = 0;
 608                         int n_elements_alloc = 0;
 609                         int n_elements_custom = 0;
 610                         int size;
 611
 612                         data = ucimap_get_data(sd, om);
 613                         uci_foreach_element(&s->options, e) {
 614                                 struct uci_option *o = uci_to_option(e);
 615                                 struct uci_element *tmp;
 616
 617                                 if (strcmp(e->name, om->name) != 0)
 618                                         continue;
 619
 620                                 if (o->type == UCI_TYPE_LIST) {
 621                                         uci_foreach_element(&o->v.list, tmp) {
 622                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 623                                                 n_elements++;
 624                                         }
 625                                 } else if ((o->type == UCI_TYPE_STRING) &&
 626                                            ucimap_is_list_auto(om->type)) {
 627                                         const char *data = o->v.string;
 628                                         do {
 629                                                 while (isspace(*data))
 630                                                         data++;
 631
 632                                                 if (!*data)
 633                                                         break;
 634
 635                                                 n_elements++;
 636                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 637
 638                                                 while (*data && !isspace(*data))
 639                                                         data++;
 640                                         } while (*data);
 641
 642                                         /* for the duplicated data string */
 643                                         if (n_elements)
 644                                                 n_alloc++;
 645                                 }
 646                                 break;
 647                         }
 648                         /* add one more for the ucimap_list */
 649                         n_alloc += n_elements_alloc + 1;
 650                         n_alloc_custom += n_elements_custom;
 651                         size = sizeof(struct ucimap_list) +
 652                                 n_elements * sizeof(union ucimap_data);
 653
 654                         data->list = malloc(size);
 655                         if (!data->list)
 656                                 goto error_mem;
 657
 658                         memset(data->list, 0, size);
 659                         data->list->size = n_elements;
 660                 } else {
 661                         ucimap_count_alloc(om, &n_alloc, &n_alloc_custom);
 662                 }
 663         }
 664
 665         sd->allocmap = calloc(n_alloc, sizeof(struct ucimap_alloc));
 666         if (!sd->allocmap)
 667                 goto error_mem;
 668
 669         if (n_alloc_custom > 0) {
 670                 sd->alloc_custom = calloc(n_alloc_custom, sizeof(struct ucimap_alloc_custom));
 671                 if (!sd->alloc_custom)
 672                         goto error_mem;
 673         }
 674
 675         section_name = strdup(s->e.name);
 676         if (!section_name)
 677                 goto error_mem;
 678
 679         sd->section_name = section_name;
 680
 681         sd->cmap = calloc(1, BITFIELD_SIZE(sm->n_options));
 682         if (!sd->cmap)
 683                 goto error_mem;
 684
 685         ucimap_add_alloc(sd, (void *)section_name);
 686         ucimap_add_alloc(sd, (void *)sd->cmap);
 687         ucimap_foreach_option(sm, om) {
 688                 if (!ucimap_is_list(om->type))
 689                         continue;
 690
 691                 ucimap_add_alloc(sd, ucimap_get_data(sd, om)->list);
 692         }
 693
 694         section = ucimap_section_ptr(sd);
 695         err = sm->init(map, section, s);
 696         if (err)
 697                 goto error;
 698
 699         if (map->parsed) {
 700                 ucimap_add_section(sd);
 701         } else {
 702                 ucimap_add_section_list(map, sd);
 703         }
 704
 705         err = ucimap_parse_options(map, sm, sd, s);
 706         if (err)
 707                 goto error;
 708
 709         return 0;
 710
 711 error_mem:
 712         if (sd->allocmap)
 713                 free(sd->allocmap);
 714         free(sd);
 715         return UCI_ERR_MEM;
 716
 717 error:
 718         ucimap_free_section(map, sd);
 719         return err;
 720 }
 721
 722 static int
 723 ucimap_fill_ptr(struct uci_ptr *ptr, struct uci_section *s, const char *option)
 724 {
 725         struct uci_package *p = s->package;
 726
 727         memset(ptr, 0, sizeof(struct uci_ptr));
 728
 729         ptr->package = p->e.name;
 730         ptr->p = p;
 731
 732         ptr->section = s->e.name;
 733         ptr->s = s;
 734
 735         ptr->option = option;
 736         return uci_lookup_ptr(p->ctx, ptr, NULL, false);
 737 }
 738
 739 void
 740 ucimap_set_changed(struct ucimap_section_data *sd, void *field)
 741 {
 742         void *section = ucimap_section_ptr(sd);
 743         struct uci_sectionmap *sm = sd->sm;
 744         struct uci_optmap *om;
 745         int ofs = (char *)field - (char *)section;
 746         int i = 0;
 747
 748         ucimap_foreach_option(sm, om) {
 749                 if (om->offset == ofs) {
 750                         SET_BIT(sd->cmap, i);
 751                         break;
 752                 }
 753                 i++;
 754         }
 755 }
 756
 757 static char *
 758 ucimap_data_to_string(struct ucimap_section_data *sd, struct uci_optmap *om, union ucimap_data *data)
 759 {
 760         static char buf[32];
 761         char *str = NULL;
 762
 763         switch(om->type & UCIMAP_SUBTYPE) {
 764         case UCIMAP_STRING:
 765                 str = data->s;
 766                 break;
 767         case UCIMAP_INT:
 768                 sprintf(buf, "%d", data->i);
 769                 str = buf;
 770                 break;
 771         case UCIMAP_BOOL:
 772                 sprintf(buf, "%d", !!data->b);
 773                 str = buf;
 774                 break;
 775         case UCIMAP_SECTION:
 776                 if (data->ptr)
 777                         str = (char *) ucimap_ptr_section(om->data.sm, data->ptr)->section_name;
 778                 else
 779                         str = "";
 780                 break;
 781         case UCIMAP_CUSTOM:
 782                 break;
 783         default:
 784                 return NULL;
 785         }
 786
 787         if (om->format) {
 788                 if (om->format(ucimap_section_ptr(sd), om, data, &str) < 0)
 789                         return NULL;
 790
 791                 if (!str)
 792                         str = "";
 793         }
 794         return str;
 795 }
 796
 797 int
 798 ucimap_store_section(struct uci_map *map, struct uci_package *p, struct ucimap_section_data *sd)
 799 {
 800         struct uci_sectionmap *sm = sd->sm;
 801         struct uci_section *s = NULL;
 802         struct uci_optmap *om;
 803         struct uci_element *e;
 804         struct uci_ptr ptr;
 805         int i = 0;
 806         int ret;
 807
 808         uci_foreach_element(&p->sections, e) {
 809                 if (!strcmp(e->name, sd->section_name)) {
 810                         s = uci_to_section(e);
 811                         break;
 812                 }
 813         }
 814         if (!s)
 815                 return UCI_ERR_NOTFOUND;
 816
 817         ucimap_foreach_option(sm, om) {
 818                 union ucimap_data *data;
 819
 820                 i++;
 821                 data = ucimap_get_data(sd, om);
 822                 if (!TEST_BIT(sd->cmap, i - 1))
 823                         continue;
 824
 825                 ucimap_fill_ptr(&ptr, s, om->name);
 826                 if (ucimap_is_list(om->type)) {
 827                         struct ucimap_list *list = data->list;
 828                         bool first = true;
 829                         int j;
 830
 831                         for (j = 0; j < list->n_items; j++) {
 832                                 ptr.value = ucimap_data_to_string(sd, om, &list->item[j]);
 833                                 if (!ptr.value)
 834                                         continue;
 835
 836                                 if (first) {
 837                                         ret = uci_set(s->package->ctx, &ptr);
 838                                         first = false;
 839                                 } else {
 840                                         ret = uci_add_list(s->package->ctx, &ptr);
 841                                 }
 842                                 if (ret)
 843                                         return ret;
 844                         }
 845                 } else {
 846                         ptr.value = ucimap_data_to_string(sd, om, data);
 847                         if (!ptr.value)
 848                                 continue;
 849
 850                         ret = uci_set(s->package->ctx, &ptr);
 851                         if (ret)
 852                                 return ret;
 853                 }
 854
 855                 CLR_BIT(sd->cmap, i - 1);
 856         }
 857
 858         return 0;
 859 }
 860
 861 void
 862 ucimap_parse(struct uci_map *map, struct uci_package *pkg)
 863 {
 864         struct uci_element *e;
 865         struct ucimap_section_data *sd, **sd_tail;
 866         struct ucimap_fixup *f;
 867         int i;
 868
 869         sd_tail = map->sdata_tail;
 870         map->parsed = false;
 871         map->sdata_tail = &map->pending;
 872         uci_foreach_element(&pkg->sections, e) {
 873                 struct uci_section *s = uci_to_section(e);
 874
 875                 for (i = 0; i < map->n_sections; i++) {
 876                         struct uci_sectionmap *sm = map->sections[i];
 877                         struct ucimap_section_data *sd;
 878
 879                         if (strcmp(s->type, map->sections[i]->type) != 0)
 880                                 continue;
 881
 882                         if (sm->alloc) {
 883                                 sd = sm->alloc(map, sm, s);
 884                                 memset(sd, 0, sizeof(struct ucimap_section_data));
 885                         } else {
 886                                 sd = malloc(sm->alloc_len);
 887                                 memset(sd, 0, sm->alloc_len);
 888                                 sd = ucimap_ptr_section(sm, sd);
 889                         }
 890                         if (!sd)
 891                                 continue;
 892
 893                         ucimap_parse_section(map, sm, sd, s);
 894                 }
 895         }
 896         if (!map->parsed) {
 897                 map->parsed = true;
 898                 map->sdata_tail = sd_tail;
 899         }
 900
 901         f = map->fixup;
 902         while (f) {
 903                 struct ucimap_fixup *next = f->next;
 904                 ucimap_handle_fixup(map, f);
 905                 free(f);
 906                 f = next;
 907         }
 908         map->fixup_tail = &map->fixup;
 909         map->fixup = NULL;
 910
 911         sd = map->pending;
 912         while (sd) {
 913                 struct ucimap_section_data *next = sd->next;
 914                 ucimap_add_section(sd);
 915                 sd = next;
 916         }
 917         map->pending = NULL;
 918 }