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;
 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         union ucimap_data *data;
 211
 212         if (!ptr)
 213                 return false;
 214
 215         switch(f->type & UCIMAP_TYPE) {
 216         case UCIMAP_SIMPLE:
 217                 f->data->ptr = ptr;
 218                 break;
 219         case UCIMAP_LIST:
 220                 data = ucimap_list_append(f->data->list);
 221                 if (!data)
 222                         return false;
 223
 224                 data->ptr = ptr;
 225                 break;
 226         }
 227         return true;
 228 }
 229
 230 void
 231 ucimap_free_item(struct ucimap_section_data *sd, void *item)
 232 {
 233         struct ucimap_alloc_custom *ac;
 234         struct ucimap_alloc *a;
 235         void *ptr = *((void **) item);
 236         int i;
 237
 238         if (!ptr)
 239                 return;
 240
 241         *((void **)item) = NULL;
 242         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 243                 if (a->ptr != ptr)
 244                         continue;
 245
 246                 if (i != sd->allocmap_len - 1)
 247                         a->ptr = sd->allocmap[sd->allocmap_len - 1].ptr;
 248
 249                 sd->allocmap_len--;
 250                 return;
 251         }
 252
 253         for (i = 0, ac = sd->alloc_custom; i < sd->alloc_custom_len; i++, ac++) {
 254                 if (ac->ptr != ptr)
 255                         continue;
 256
 257                 if (i != sd->alloc_custom_len - 1)
 258                         memcpy(ac, &sd->alloc_custom[sd->alloc_custom_len - 1],
 259                                 sizeof(struct ucimap_alloc_custom));
 260
 261                 ac->om->free(ac->section, ac->om, ac->ptr);
 262                 sd->alloc_custom_len--;
 263                 return;
 264         }
 265 }
 266
 267 int
 268 ucimap_resize_list(struct ucimap_section_data *sd, struct ucimap_list **list, int items)
 269 {
 270         struct ucimap_list *new;
 271         struct ucimap_alloc *a;
 272         int i, offset = 0;
 273         int size = sizeof(struct ucimap_list) + items * sizeof(union ucimap_data);
 274
 275         if (!*list) {
 276                 new = calloc(1, size);
 277
 278                 ucimap_add_alloc(sd, new);
 279                 goto set;
 280         }
 281
 282         for (i = 0, a = sd->allocmap; i < sd->allocmap_len; i++, a++) {
 283                 if (a->ptr != *list)
 284                         continue;
 285
 286                 goto realloc;
 287         }
 288         return -ENOENT;
 289
 290 realloc:
 291         if (items > (*list)->size)
 292                 offset = (items - (*list)->size) * sizeof(union ucimap_data);
 293
 294         a->ptr = realloc(a->ptr, size);
 295         if (offset)
 296                 memset((char *) a->ptr + offset, 0, size - offset);
 297         new = a->ptr;
 298
 299 set:
 300         new->size = items;
 301         *list = new;
 302         return 0;
 303 }
 304
 305 static void
 306 ucimap_add_fixup(struct ucimap_section_data *sd, union ucimap_data *data, struct uci_optmap *om, const char *str)
 307 {
 308         struct ucimap_fixup *f, tmp;
 309         struct uci_map *map = sd->map;
 310
 311         tmp.sm = om->data.sm;
 312         tmp.name = str;
 313         tmp.type = om->type;
 314         tmp.data = data;
 315         if (ucimap_handle_fixup(map, &tmp))
 316                 return;
 317
 318         f = malloc(sizeof(struct ucimap_fixup));
 319         if (!f)
 320                 return;
 321
 322         memcpy(f, &tmp, sizeof(tmp));
 323         f->next = NULL;
 324         *map->fixup_tail = f;
 325         map->fixup_tail = &f->next;
 326 }
 327
 328 static void
 329 ucimap_add_custom_alloc(struct ucimap_section_data *sd, struct uci_optmap *om, void *ptr)
 330 {
 331         struct ucimap_alloc_custom *a = &sd->alloc_custom[sd->alloc_custom_len++];
 332
 333         a->section = ucimap_section_ptr(sd);
 334         a->om = om;
 335         a->ptr = ptr;
 336 }
 337
 338 static void
 339 ucimap_add_value(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 340 {
 341         union ucimap_data tdata = *data;
 342         char *eptr = NULL;
 343         long lval;
 344         char *s;
 345         int val;
 346
 347         if (ucimap_is_list(om->type) && !ucimap_is_fixup(om->type)) {
 348                 data = ucimap_list_append(data->list);
 349                 if (!data)
 350                         return;
 351         }
 352
 353         switch(om->type & UCIMAP_SUBTYPE) {
 354         case UCIMAP_STRING:
 355                 if ((om->data.s.maxlen > 0) &&
 356                         (strlen(str) > om->data.s.maxlen))
 357                         return;
 358
 359                 s = strdup(str);
 360                 tdata.s = s;
 361                 ucimap_add_alloc(sd, s);
 362                 break;
 363         case UCIMAP_BOOL:
 364                 if (!strcmp(str, "on"))
 365                         val = true;
 366                 else if (!strcmp(str, "1"))
 367                         val = true;
 368                 else if (!strcmp(str, "enabled"))
 369                         val = true;
 370                 else if (!strcmp(str, "off"))
 371                         val = false;
 372                 else if (!strcmp(str, "0"))
 373                         val = false;
 374                 else if (!strcmp(str, "disabled"))
 375                         val = false;
 376                 else
 377                         return;
 378
 379                 tdata.b = val;
 380                 break;
 381         case UCIMAP_INT:
 382                 lval = strtol(str, &eptr, om->data.i.base);
 383                 if (lval < INT_MIN || lval > INT_MAX)
 384                         return;
 385
 386                 if (!eptr || *eptr == '\0')
 387                         tdata.i = (int) lval;
 388                 else
 389                         return;
 390                 break;
 391         case UCIMAP_SECTION:
 392                 ucimap_add_fixup(sd, data, om, str);
 393                 return;
 394         case UCIMAP_CUSTOM:
 395                 break;
 396         }
 397         if (om->parse) {
 398                 if (om->parse(ucimap_section_ptr(sd), om, data, str) < 0)
 399                         return;
 400                 if (ucimap_is_custom(om->type) && om->free) {
 401                         if (tdata.ptr != data->ptr)
 402                                 ucimap_add_custom_alloc(sd, om, data->ptr);
 403                 }
 404         }
 405         if (ucimap_is_custom(om->type))
 406                 return;
 407         memcpy(data, &tdata, sizeof(union ucimap_data));
 408 }
 409
 410
 411 static void
 412 ucimap_convert_list(union ucimap_data *data, struct uci_optmap *om, struct ucimap_section_data *sd, const char *str)
 413 {
 414         char *s, *p;
 415
 416         s = strdup(str);
 417         if (!s)
 418                 return;
 419
 420         ucimap_add_alloc(sd, s);
 421
 422         do {
 423                 while (isspace(*s))
 424                         s++;
 425
 426                 if (!*s)
 427                         break;
 428
 429                 p = s;
 430                 while (*s && !isspace(*s))
 431                         s++;
 432
 433                 if (isspace(*s)) {
 434                         *s = 0;
 435                         s++;
 436                 }
 437
 438                 ucimap_add_value(data, om, sd, p);
 439         } while (*s);
 440 }
 441
 442 static int
 443 ucimap_parse_options(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 444 {
 445         struct uci_element *e, *l;
 446         struct uci_option *o;
 447         union ucimap_data *data;
 448
 449         uci_foreach_element(&s->options, e) {
 450                 struct uci_optmap *om = NULL, *tmp;
 451
 452                 ucimap_foreach_option(sm, tmp) {
 453                         if (strcmp(e->name, tmp->name) == 0) {
 454                                 om = tmp;
 455                                 break;
 456                         }
 457                 }
 458                 if (!om)
 459                         continue;
 460
 461                 data = ucimap_get_data(sd, om);
 462                 o = uci_to_option(e);
 463                 if ((o->type == UCI_TYPE_STRING) && ucimap_is_simple(om->type)) {
 464                         ucimap_add_value(data, om, sd, o->v.string);
 465                 } else if ((o->type == UCI_TYPE_LIST) && ucimap_is_list(om->type)) {
 466                         uci_foreach_element(&o->v.list, l) {
 467                                 ucimap_add_value(data, om, sd, l->name);
 468                         }
 469                 } else if ((o->type == UCI_TYPE_STRING) && ucimap_is_list_auto(om->type)) {
 470                         ucimap_convert_list(data, om, sd, o->v.string);
 471                 }
 472         }
 473
 474         return 0;
 475 }
 476
 477 static void
 478 ucimap_add_section_list(struct uci_map *map, struct ucimap_section_data *sd)
 479 {
 480         sd->ref = map->sdata_tail;
 481         *sd->ref = sd;
 482         map->sdata_tail = &sd->next;
 483 }
 484
 485 static void
 486 ucimap_add_section(struct ucimap_section_data *sd)
 487 {
 488         struct uci_map *map = sd->map;
 489
 490         sd->next = NULL;
 491         if (sd->sm->add(map, ucimap_section_ptr(sd)) < 0)
 492                 ucimap_free_section(map, sd);
 493         else
 494                 ucimap_add_section_list(map, sd);
 495 }
 496
 497 #ifdef UCI_DEBUG
 498 static const char *ucimap_type_names[] = {
 499         [UCIMAP_STRING] = "string",
 500         [UCIMAP_INT] = "integer",
 501         [UCIMAP_BOOL] = "boolean",
 502         [UCIMAP_SECTION] = "section",
 503         [UCIMAP_LIST] = "list",
 504 };
 505
 506 static const char *
 507 ucimap_get_type_name(int type)
 508 {
 509         static char buf[32];
 510         const char *name;
 511
 512         if (ucimap_is_list(type))
 513                 return ucimap_type_names[UCIMAP_LIST];
 514
 515         name = ucimap_type_names[type & UCIMAP_SUBTYPE];
 516         if (!name) {
 517                 sprintf(buf, "Unknown (%d)", type & UCIMAP_SUBTYPE);
 518                 name = buf;
 519         }
 520
 521         return name;
 522 }
 523 #endif
 524
 525 static bool
 526 ucimap_check_optmap_type(struct uci_sectionmap *sm, struct uci_optmap *om)
 527 {
 528         unsigned int type;
 529
 530         if (unlikely(sm->type_name != om->type_name) &&
 531             unlikely(strcmp(sm->type_name, om->type_name) != 0)) {
 532                 DPRINTF("Option '%s' of section type '%s' refereces unknown "
 533                         "section type '%s', should be '%s'.\n",
 534                         om->name, sm->type, om->type_name, sm->type_name);
 535                 return false;
 536         }
 537
 538         if (om->detected_type < 0)
 539                 return true;
 540
 541         if (ucimap_is_custom(om->type))
 542                 return true;
 543
 544         if (ucimap_is_list(om->type) !=
 545             ucimap_is_list(om->detected_type))
 546                 goto failed;
 547
 548         if (ucimap_is_list(om->type))
 549                 return true;
 550
 551         type = om->type & UCIMAP_SUBTYPE;
 552         switch(type) {
 553         case UCIMAP_STRING:
 554         case UCIMAP_INT:
 555         case UCIMAP_BOOL:
 556                 if (type != om->detected_type)
 557                         goto failed;
 558                 break;
 559         case UCIMAP_SECTION:
 560                 goto failed;
 561         default:
 562                 break;
 563         }
 564         return true;
 565
 566 failed:
 567         DPRINTF("Invalid type in option '%s' of section type '%s', "
 568                 "declared type is %s, detected type is %s\n",
 569                 om->name, sm->type,
 570                 ucimap_get_type_name(om->type),
 571                 ucimap_get_type_name(om->detected_type));
 572         return false;
 573 }
 574
 575 static void
 576 ucimap_count_alloc(struct uci_optmap *om, int *n_alloc, int *n_custom)
 577 {
 578         if (ucimap_is_alloc(om->type))
 579                 (*n_alloc)++;
 580         else if (ucimap_is_custom(om->type) && om->free)
 581                 (*n_custom)++;
 582 }
 583
 584 int
 585 ucimap_parse_section(struct uci_map *map, struct uci_sectionmap *sm, struct ucimap_section_data *sd, struct uci_section *s)
 586 {
 587         struct uci_optmap *om;
 588         char *section_name;
 589         void *section;
 590         int n_alloc = 2;
 591         int n_alloc_custom = 0;
 592         int err;
 593
 594         sd->map = map;
 595         sd->sm = sm;
 596
 597         ucimap_foreach_option(sm, om) {
 598                 if (!ucimap_check_optmap_type(sm, om))
 599                         continue;
 600
 601                 if (ucimap_is_list(om->type)) {
 602                         union ucimap_data *data;
 603                         struct uci_element *e;
 604                         int n_elements = 0;
 605                         int n_elements_alloc = 0;
 606                         int n_elements_custom = 0;
 607                         int size;
 608
 609                         data = ucimap_get_data(sd, om);
 610                         uci_foreach_element(&s->options, e) {
 611                                 struct uci_option *o = uci_to_option(e);
 612                                 struct uci_element *tmp;
 613
 614                                 if (strcmp(e->name, om->name) != 0)
 615                                         continue;
 616
 617                                 if (o->type == UCI_TYPE_LIST) {
 618                                         uci_foreach_element(&o->v.list, tmp) {
 619                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 620                                                 n_elements++;
 621                                         }
 622                                 } else if ((o->type == UCI_TYPE_STRING) &&
 623                                            ucimap_is_list_auto(om->type)) {
 624                                         const char *data = o->v.string;
 625                                         do {
 626                                                 while (isspace(*data))
 627                                                         data++;
 628
 629                                                 if (!*data)
 630                                                         break;
 631
 632                                                 n_elements++;
 633                                                 ucimap_count_alloc(om, &n_elements_alloc, &n_elements_custom);
 634
 635                                                 while (*data && !isspace(*data))
 636                                                         data++;
 637                                         } while (*data);
 638
 639                                         /* for the duplicated data string */
 640                                         if (n_elements)
 641                                                 n_alloc++;
 642                                 }
 643                                 break;
 644                         }
 645                         /* add one more for the ucimap_list */
 646                         n_alloc += n_elements_alloc + 1;
 647                         n_alloc_custom += n_elements_custom;
 648                         size = sizeof(struct ucimap_list) +
 649                                 n_elements * sizeof(union ucimap_data);
 650
 651                         data->list = malloc(size);
 652                         if (!data->list)
 653                                 goto error_mem;
 654
 655                         memset(data->list, 0, size);
 656                         data->list->size = n_elements;
 657                 } else {
 658                         ucimap_count_alloc(om, &n_alloc, &n_alloc_custom);
 659                 }
 660         }
 661
 662         sd->allocmap = calloc(n_alloc, sizeof(struct ucimap_alloc));
 663         if (!sd->allocmap)
 664                 goto error_mem;
 665
 666         if (n_alloc_custom > 0) {
 667                 sd->alloc_custom = calloc(n_alloc_custom, sizeof(struct ucimap_alloc_custom));
 668                 if (!sd->alloc_custom)
 669                         goto error_mem;
 670         }
 671
 672         section_name = strdup(s->e.name);
 673         if (!section_name)
 674                 goto error_mem;
 675
 676         sd->section_name = section_name;
 677
 678         sd->cmap = calloc(1, BITFIELD_SIZE(sm->n_options));
 679         if (!sd->cmap)
 680                 goto error_mem;
 681
 682         ucimap_add_alloc(sd, (void *)section_name);
 683         ucimap_add_alloc(sd, (void *)sd->cmap);
 684         ucimap_foreach_option(sm, om) {
 685                 if (!ucimap_is_list(om->type))
 686                         continue;
 687
 688                 ucimap_add_alloc(sd, ucimap_get_data(sd, om)->list);
 689         }
 690
 691         section = ucimap_section_ptr(sd);
 692         err = sm->init(map, section, s);
 693         if (err)
 694                 goto error;
 695
 696         if (map->parsed) {
 697                 ucimap_add_section(sd);
 698         } else {
 699                 ucimap_add_section_list(map, sd);
 700         }
 701
 702         err = ucimap_parse_options(map, sm, sd, s);
 703         if (err)
 704                 goto error;
 705
 706         return 0;
 707
 708 error_mem:
 709         if (sd->allocmap)
 710                 free(sd->allocmap);
 711         free(sd);
 712         return UCI_ERR_MEM;
 713
 714 error:
 715         ucimap_free_section(map, sd);
 716         return err;
 717 }
 718
 719 static int
 720 ucimap_fill_ptr(struct uci_ptr *ptr, struct uci_section *s, const char *option)
 721 {
 722         struct uci_package *p = s->package;
 723
 724         memset(ptr, 0, sizeof(struct uci_ptr));
 725
 726         ptr->package = p->e.name;
 727         ptr->p = p;
 728
 729         ptr->section = s->e.name;
 730         ptr->s = s;
 731
 732         ptr->option = option;
 733         return uci_lookup_ptr(p->ctx, ptr, NULL, false);
 734 }
 735
 736 void
 737 ucimap_set_changed(struct ucimap_section_data *sd, void *field)
 738 {
 739         void *section = ucimap_section_ptr(sd);
 740         struct uci_sectionmap *sm = sd->sm;
 741         struct uci_optmap *om;
 742         int ofs = (char *)field - (char *)section;
 743         int i = 0;
 744
 745         ucimap_foreach_option(sm, om) {
 746                 if (om->offset == ofs) {
 747                         SET_BIT(sd->cmap, i);
 748                         break;
 749                 }
 750                 i++;
 751         }
 752 }
 753
 754 static char *
 755 ucimap_data_to_string(struct ucimap_section_data *sd, struct uci_optmap *om, union ucimap_data *data)
 756 {
 757         static char buf[32];
 758         char *str = NULL;
 759
 760         switch(om->type & UCIMAP_SUBTYPE) {
 761         case UCIMAP_STRING:
 762                 str = data->s;
 763                 break;
 764         case UCIMAP_INT:
 765                 sprintf(buf, "%d", data->i);
 766                 str = buf;
 767                 break;
 768         case UCIMAP_BOOL:
 769                 sprintf(buf, "%d", !!data->b);
 770                 str = buf;
 771                 break;
 772         case UCIMAP_SECTION:
 773                 if (data->ptr)
 774                         str = (char *) ucimap_ptr_section(om->data.sm, data->ptr)->section_name;
 775                 else
 776                         str = "";
 777                 break;
 778         case UCIMAP_CUSTOM:
 779                 break;
 780         default:
 781                 return NULL;
 782         }
 783
 784         if (om->format) {
 785                 if (om->format(ucimap_section_ptr(sd), om, data, &str) < 0)
 786                         return NULL;
 787
 788                 if (!str)
 789                         str = "";
 790         }
 791         return str;
 792 }
 793
 794 int
 795 ucimap_store_section(struct uci_map *map, struct uci_package *p, struct ucimap_section_data *sd)
 796 {
 797         struct uci_sectionmap *sm = sd->sm;
 798         struct uci_section *s = NULL;
 799         struct uci_optmap *om;
 800         struct uci_element *e;
 801         struct uci_ptr ptr;
 802         int i = 0;
 803         int ret;
 804
 805         uci_foreach_element(&p->sections, e) {
 806                 if (!strcmp(e->name, sd->section_name)) {
 807                         s = uci_to_section(e);
 808                         break;
 809                 }
 810         }
 811         if (!s)
 812                 return UCI_ERR_NOTFOUND;
 813
 814         ucimap_foreach_option(sm, om) {
 815                 union ucimap_data *data;
 816
 817                 i++;
 818                 data = ucimap_get_data(sd, om);
 819                 if (!TEST_BIT(sd->cmap, i - 1))
 820                         continue;
 821
 822                 ucimap_fill_ptr(&ptr, s, om->name);
 823                 if (ucimap_is_list(om->type)) {
 824                         struct ucimap_list *list = data->list;
 825                         bool first = true;
 826                         int j;
 827
 828                         for (j = 0; j < list->n_items; j++) {
 829                                 ptr.value = ucimap_data_to_string(sd, om, &list->item[j]);
 830                                 if (!ptr.value)
 831                                         continue;
 832
 833                                 if (first) {
 834                                         ret = uci_set(s->package->ctx, &ptr);
 835                                         first = false;
 836                                 } else {
 837                                         ret = uci_add_list(s->package->ctx, &ptr);
 838                                 }
 839                                 if (ret)
 840                                         return ret;
 841                         }
 842                 } else {
 843                         ptr.value = ucimap_data_to_string(sd, om, data);
 844                         if (!ptr.value)
 845                                 continue;
 846
 847                         ret = uci_set(s->package->ctx, &ptr);
 848                         if (ret)
 849                                 return ret;
 850                 }
 851
 852                 CLR_BIT(sd->cmap, i - 1);
 853         }
 854
 855         return 0;
 856 }
 857
 858 void
 859 ucimap_parse(struct uci_map *map, struct uci_package *pkg)
 860 {
 861         struct uci_element *e;
 862         struct ucimap_section_data *sd, **sd_tail;
 863         struct ucimap_fixup *f;
 864         int i;
 865
 866         sd_tail = map->sdata_tail;
 867         map->parsed = false;
 868         map->sdata_tail = &map->pending;
 869         uci_foreach_element(&pkg->sections, e) {
 870                 struct uci_section *s = uci_to_section(e);
 871
 872                 for (i = 0; i < map->n_sections; i++) {
 873                         struct uci_sectionmap *sm = map->sections[i];
 874                         struct ucimap_section_data *sd;
 875
 876                         if (strcmp(s->type, map->sections[i]->type) != 0)
 877                                 continue;
 878
 879                         if (sm->alloc) {
 880                                 sd = sm->alloc(map, sm, s);
 881                                 memset(sd, 0, sizeof(struct ucimap_section_data));
 882                         } else {
 883                                 sd = malloc(sm->alloc_len);
 884                                 memset(sd, 0, sm->alloc_len);
 885                                 sd = ucimap_ptr_section(sm, sd);
 886                         }
 887                         if (!sd)
 888                                 continue;
 889
 890                         ucimap_parse_section(map, sm, sd, s);
 891                 }
 892         }
 893         if (!map->parsed) {
 894                 map->parsed = true;
 895                 map->sdata_tail = sd_tail;
 896         }
 897
 898         f = map->fixup;
 899         while (f) {
 900                 struct ucimap_fixup *next = f->next;
 901                 ucimap_handle_fixup(map, f);
 902                 free(f);
 903                 f = next;
 904         }
 905         map->fixup_tail = &map->fixup;
 906         map->fixup = NULL;
 907
 908         sd = map->pending;
 909         while (sd) {
 910                 struct ucimap_section_data *next = sd->next;
 911                 ucimap_add_section(sd);
 912                 sd = next;
 913         }
 914         map->pending = NULL;
 915 }