vconftool.c

   1 /*
   2  * libslp-setting
   3  *
   4  * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd. All rights reserved.
   5  *
   6  * Contact: Hakjoo Ko <hakjoo.ko@samsung.com>
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  * http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  *
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <glib.h>
  26 #include <vconf.h>
  27 #include <glib-object.h>
  28 #include "vconf-log.h"
  29
  30 #include <unistd.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33 #include <sys/wait.h>
  34 #include <fcntl.h>
  35 #include <errno.h>
  36
  37 #include <wordexp.h>
  38
  39 enum {
  40         VCONFTOOL_TYPE_NO = 0x00,
  41         VCONFTOOL_TYPE_STRING,
  42         VCONFTOOL_TYPE_INT,
  43         VCONFTOOL_TYPE_DOUBLE,
  44         VCONFTOOL_TYPE_BOOL
  45 };
  46
  47 #define BUFSIZE         1024
  48
  49 const char *BACKEND_DB_PREFIX = "db/";
  50 const char *BACKEND_FILE_PREFIX = "file/";
  51 const char *BACKEND_MEMORY_PREFIX = "memory/";
  52
  53 const char *DB_PREFIX = "/opt/var/kdb";
  54 const char *FILE_PREFIX = "/opt/var/kdb";
  55 const char *MEMORY_PREFIX = "/var/run";
  56 const char *MEMORY_INIT = "/opt/var/kdb/memory_init";
  57
  58 static char *guid = NULL;
  59 static char *uid = NULL;
  60 static char *vconf_type = NULL;
  61 static int is_recursive = FALSE;
  62 static int is_initialization = FALSE;
  63 static int is_forced = FALSE;
  64 static int get_num = 0;
  65
  66 static GOptionEntry entries[] = {
  67         {"type", 't', 0, G_OPTION_ARG_STRING, &vconf_type, "type of value",
  68          "int|bool|double|string"},
  69         {"recursive", 'r', 0, G_OPTION_ARG_NONE, &is_recursive,
  70          "retrieve keys recursively", NULL},
  71         {"guid", 'g', 0, G_OPTION_ARG_STRING, &guid, "group permission", NULL},
  72         {"uid", 'u', 0, G_OPTION_ARG_STRING, &uid, "user permission", NULL},
  73         {"initialization", 'i', 0, G_OPTION_ARG_NONE, &is_initialization,
  74          "memory backend initialization", NULL},
  75         {"force", 'f', 0, G_OPTION_ARG_NONE, &is_forced,
  76          "overwrite vconf values by force", NULL},
  77         {NULL}
  78 };
  79
  80 static void get_operation(char *input);
  81 static void recursive_get(char *subDIR, int level);
  82 static void print_keylist(keylist_t *keylist, keynode_t *temp_node, int level);
  83
  84 static void print_help(const char *cmd)
  85 {
  86         fprintf(stderr, "Usage:\n");
  87         fprintf(stderr, "\n");
  88         fprintf(stderr, "[Set vconf value]\n");
  89         fprintf(stderr,
  90                 "       %s set -t <TYPE> <KEY NAME> <VALUE> <OPTIONS>\n", cmd);
  91         fprintf(stderr, "                 <TYPE>=int|bool|double|string\n");
  92         fprintf(stderr, "\n");
  93         fprintf(stderr,
  94                 "       Ex) %s set -t string db/testapp/key1 \"This is test\" \n",
  95                 cmd);
  96         fprintf(stderr, "\n");
  97         fprintf(stderr, "       <OPTIONS>\n");
  98         fprintf(stderr,
  99                 "          -g <GUID> : Set Effective group id. The key's permission will be set to 0664.\n");
 100         fprintf(stderr,
 101                 "           Ex) %s set -t string db/testapp/key1 \"This is test\" -g 425\n",
 102                 cmd);
 103         fprintf(stderr,
 104                 "           NOTE: -g and -u cannot be userd together. -u ignores -g option.\n");
 105         fprintf(stderr, "\n");
 106         fprintf(stderr,
 107                 "          -u <UID> : Set Effective user id. The key's permission will be set to 0644.\n");
 108         fprintf(stderr,
 109                 "           Ex) %s set -t string db/testapp/key1 \"This is test\" -u 5000\n",
 110                 cmd);
 111         fprintf(stderr,
 112                 "           NOTE: -g and -u cannot be userd together. -u ignores -g option.\n");
 113         fprintf(stderr, "\n");
 114         fprintf(stderr,
 115                 "          -i : Install memory backend key into flash space for backup.\n");
 116         fprintf(stderr,
 117                 "           Ex) %s set -t string memory/testapp/key1 \"This is test\" -i\n",
 118                 cmd);
 119         fprintf(stderr, "\n");
 120         fprintf(stderr,
 121                 "          -f : Overwrite values by force, even when vconf values are already exist.\n");
 122         fprintf(stderr, "\n");
 123         fprintf(stderr, "[Get vconf value]\n");
 124         fprintf(stderr, "       %s get <OPTIONS> <KEY NAME>\n", cmd);
 125         fprintf(stderr, "\n");
 126         fprintf(stderr, "       <OPTIONS>\n");
 127         fprintf(stderr,
 128                 "          -r : retrieve all keys included in sub-directorys \n");
 129         fprintf(stderr, "       Ex) %s get db/testapp/key1\n", cmd);
 130         fprintf(stderr, "           %s get db/testapp/\n", cmd);
 131         fprintf(stderr, "\n");
 132         fprintf(stderr, "[Unset vconf value]\n");
 133         fprintf(stderr, "       %s unset <KEY NAME>\n", cmd);
 134         fprintf(stderr, "\n");
 135         fprintf(stderr, "       Ex) %s unset db/testapp/key1\n", cmd);
 136         fprintf(stderr, "\n");
 137 }
 138
 139 static int check_type(void)
 140 {
 141         if (vconf_type) {
 142                 if (!strncasecmp(vconf_type, "int", 3))
 143                         return VCONFTOOL_TYPE_INT;
 144                 else if (!strncasecmp(vconf_type, "string", 6))
 145                         return VCONFTOOL_TYPE_STRING;
 146                 else if (!strncasecmp(vconf_type, "double", 6))
 147                         return VCONFTOOL_TYPE_DOUBLE;
 148                 else if (!strncasecmp(vconf_type, "bool", 4))
 149                         return VCONFTOOL_TYPE_BOOL;
 150         }
 151         return VCONFTOOL_TYPE_NO;
 152 }
 153
 154 static int __system(char * cmd)
 155 {
 156         int status;
 157         pid_t cpid;
 158
 159         if((cpid = fork()) < 0) {
 160                 perror("fork");
 161                 return -1;
 162         }
 163
 164         if (cpid == 0) {
 165                 /* child */
 166                 wordexp_t p;
 167                 char **w;
 168
 169                 wordexp(cmd, &p, 0);
 170                 w = p.we_wordv;
 171
 172                 execv(w[0], (char *const *)w);
 173
 174                 wordfree(&p);
 175
 176                 _exit(-1);
 177         } else {
 178                 /* parent */
 179                 if (waitpid(cpid, &status, 0) == -1) {
 180                         perror("waitpid failed");
 181                         return -1;
 182                 }
 183                 if (WIFSIGNALED(status)) {
 184                         printf("signal(%d)\n", WTERMSIG(status));
 185                         perror("exit by signal");
 186                         return -1;
 187                 }
 188                 if (!WIFEXITED(status)) {
 189                         perror("exit abnormally");
 190                         return -1;
 191                 }
 192                 if (WIFEXITED(status) && WEXITSTATUS(status)) {
 193                         perror("child return error");
 194                         return -1;
 195                 }
 196         }
 197
 198         return 0;
 199 }
 200
 201 static void disable_invalid_char(char* src)
 202 {
 203         char* tmp;
 204
 205         for(tmp = src; *tmp; ++tmp)
 206         {
 207                 if( (*tmp == ';') || (*tmp == '|') )
 208                 {
 209                         fprintf(stderr,"invalid char is found\n");
 210                         *tmp = '_';
 211                 }
 212         }
 213 }
 214
 215 static int check_file_path_mode(char* file_path)
 216 {
 217         char szCmd[BUFSIZE] = {0,};
 218         int create_file = 0;
 219         int set_id = 0;
 220         int fd;
 221
 222         if (guid || uid) {
 223                 if (getuid() != 0) {
 224                         fprintf(stderr,
 225                                 "Error!\t Only root user can use '-g or -u' option\n");
 226                         return -1;
 227                 }
 228
 229                 set_id = 1;
 230         }
 231
 232         /* Check file path */
 233         if (access(file_path, F_OK) != 0) {
 234                 /* fprintf(stderr,"key does not exist\n"); */
 235
 236                 char szPath[BUFSIZE] = { 0, };
 237                 char *pCh = strrchr(file_path, '/');
 238                 strncat(szPath, file_path, pCh - file_path);
 239                 /* fprintf(stderr, "szPath : %s\n", szPath); */
 240
 241                 /* Check directory & create it */
 242                 if (access(szPath, F_OK) != 0) {
 243                         /* fprintf(stderr,"parent dir does not exist\n"); */
 244
 245                         snprintf(szCmd, BUFSIZE, "/bin/mkdir %s -p --mode=755", szPath);
 246                         disable_invalid_char(szCmd);
 247                         if (__system(szCmd)) {
 248                                 fprintf(stderr,"[%s:%d]Fail mkdir() szCmd=%s\n", __FILE__, __LINE__, szCmd);
 249                                 return -1;
 250                         }
 251
 252                 }
 253
 254                 create_file = 1;
 255         } else if (!is_forced) {
 256                 fprintf(stderr, "Key already exist. Use -f option to force update\n");
 257                 return -1;
 258         }
 259
 260         if(create_file) {
 261                 /* Create file */
 262                 mode_t temp;
 263                 temp = umask(0000);
 264                 fd = open(file_path, O_RDWR|O_CREAT, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH);
 265                 umask(temp);
 266                 if(fd == -1) {
 267                         fprintf(stderr, "open(rdwr,create) error\n");
 268                         return -1;
 269                 }
 270                 close(fd);
 271         }
 272
 273         if(set_id) {
 274                 if((fd = open(file_path, O_RDONLY)) == -1) {
 275                         fprintf(stderr, "open(rdonly) error\n");
 276                         return -1;
 277                 }
 278
 279                 if(uid) {
 280                         if (fchown(fd, atoi(uid), atoi(uid)) == -1) {
 281                                 fprintf(stderr, "Error!\t Fail to fchown(%d)\n", errno);
 282                                 close(fd);
 283                                 return -1;
 284                         }
 285                 } else if (guid) {
 286                         if (-1 == fchown(fd, 0, atoi(guid))) {
 287                                 fprintf(stderr, "Error!\t Fail to fchown()\n");
 288                                 close(fd);
 289                                 return -1;
 290                         }
 291                 }
 292
 293                 close(fd);
 294         }
 295
 296         return 0;
 297 }
 298
 299 /*
 300  * there are three different types of vconf key back-end
 301  * 1. filesytem
 302  * 2. sqlitefs based on sqlite3
 303  * 3. tmpfs based on memory
 304  * considering to that tmpfs is volatile so there should be a way
 305  * to initialize key into permanent storage. That is the below function
 306  * which copy memory back-end key to filesystem back-end, copy other back-end
 307  * key to filesystem back-end just makes no sense.
 308  */
 309 static int copy_memory_key(char *pszKey, char *pszOrigin)
 310 {
 311         char szCmd[BUFSIZE] = { 0, };
 312         char szPath[BUFSIZE] = { 0, };
 313         char szFileName[BUFSIZE] = { 0, };
 314         char *pCh = strrchr(pszKey, '/');
 315         int nLen = strlen(pszKey);
 316
 317         /* only copy memory/ prefix key */
 318         if (strncmp("memory/", pszKey, 7))
 319                 return 0;
 320
 321         /* Get directory path and file name */
 322         snprintf(szPath, BUFSIZE, "%s/", MEMORY_INIT);
 323         strncat(szPath, pszKey, pCh - pszKey);
 324         strncpy(szFileName, pszKey + (pCh - pszKey) + 1, nLen - (pCh - pszKey));
 325
 326         /* Check directory & create it */
 327         if (0 != access(szPath, F_OK)) {
 328                 snprintf(szCmd, BUFSIZE, "mkdir %s -p --mode=755", szPath);
 329                 if (system(szCmd)) {
 330                         printf("[%s:%d]Fail mkdir() szCmd=%s\n", __FILE__,
 331                                __LINE__, szCmd);
 332                         return -1;
 333                 }
 334         }
 335         /* copy */
 336         strncat(szPath, "/", 1);
 337         strncat(szPath, szFileName, strlen(szFileName));
 338         memset(szCmd, 0x00, BUFSIZE);
 339         snprintf(szCmd, BUFSIZE, "cp %s %s -r -p", pszOrigin, szPath);
 340         if (system(szCmd)) {
 341                 printf("[%s:%d]Fail copy\n", __FILE__, __LINE__);
 342                 return -1;
 343         }
 344         return 0;
 345 }
 346
 347 static int make_file_path(char *pszKey, char *pszBuf)
 348 {
 349         if (0 ==
 350             strncmp(pszKey, BACKEND_DB_PREFIX, strlen(BACKEND_DB_PREFIX))) {
 351                 snprintf(pszBuf, BUFSIZE, "%s/%s", DB_PREFIX, pszKey);
 352                 return 0;
 353         } else if (0 ==
 354                    strncmp(pszKey, BACKEND_FILE_PREFIX,
 355                            strlen(BACKEND_FILE_PREFIX))) {
 356                 snprintf(pszBuf, BUFSIZE, "%s/%s", FILE_PREFIX, pszKey);
 357                 return 0;
 358         } else if (0 ==
 359                    strncmp(pszKey, BACKEND_MEMORY_PREFIX,
 360                            strlen(BACKEND_MEMORY_PREFIX))) {
 361                 snprintf(pszBuf, BUFSIZE, "%s/%s", MEMORY_PREFIX, pszKey);
 362                 return 0;
 363         }
 364         return -1;
 365 }
 366
 367 int main(int argc, char **argv)
 368 {
 369         int set_type;
 370         char szFilePath[BUFSIZE] = { 0, };
 371         char *psz_key = NULL;
 372
 373         GError *error = NULL;
 374         GOptionContext *context;
 375
 376         g_type_init();
 377         context = g_option_context_new("- vconf library tool");
 378         g_option_context_add_main_entries(context, entries, NULL);
 379         g_option_context_set_help_enabled(context, FALSE);
 380         g_option_context_set_ignore_unknown_options(context, TRUE);
 381
 382         if (!g_option_context_parse(context, &argc, &argv, &error)) {
 383                 g_print("option parsing failed: %s\n", error->message);
 384                 exit(1);
 385         }
 386
 387         if (argc < 2) {
 388                 print_help(argv[0]);
 389                 return 1;
 390         }
 391
 392         if (!strncmp(argv[1], "set", 3)) {
 393                 set_type = check_type();
 394                 if (argc < 4 || !set_type) {
 395                         print_help(argv[0]);
 396                         return 1;
 397                 }
 398
 399                 if (make_file_path(argv[2], szFilePath)) {
 400                         fprintf(stderr, "Error!\t Bad prefix\n");
 401                         return -1;
 402                 }
 403
 404                 if (check_file_path_mode(szFilePath)) {
 405                         fprintf(stderr, "Error!\t create key %s\n", argv[2]);
 406                         return -1;
 407                 }
 408
 409                 switch (set_type) {
 410                         case VCONFTOOL_TYPE_STRING:
 411                                 vconf_set_str(argv[2], argv[3]);
 412                                 break;
 413                         case VCONFTOOL_TYPE_INT:
 414                                 vconf_set_int(argv[2], atoi(argv[3]));
 415                                 break;
 416                         case VCONFTOOL_TYPE_DOUBLE:
 417                                 vconf_set_dbl(argv[2], atof(argv[3]));
 418                                 break;
 419                         case VCONFTOOL_TYPE_BOOL:
 420                                 vconf_set_bool(argv[2], !!atoi(argv[3]));
 421                                 break;
 422                         default:
 423                                 fprintf(stderr, "never reach");
 424                                 exit(1);
 425                 }
 426
 427                 psz_key = argv[2];
 428                 /* Install memory backend key into flash space *******/
 429                 if (is_initialization) {
 430                         copy_memory_key(psz_key, szFilePath);
 431                 }
 432                 /* End memory backend key into flash space ***********/
 433
 434         } else if (!strncmp(argv[1], "get", 3)) {
 435                 if (argv[2])
 436                         get_operation(argv[2]);
 437                 else
 438                         print_help(argv[0]);
 439         } else if (!strncmp(argv[1], "unset", 5)) {
 440                 if (argv[2])
 441                         vconf_unset(argv[2]);
 442                 else
 443                         print_help(argv[0]);
 444         } else
 445                 fprintf(stderr, "%s is a invalid command\n", argv[1]);
 446         return 0;
 447 }
 448
 449 static void get_operation(char *input)
 450 {
 451         keylist_t *get_keylist;
 452         keynode_t *temp_node;
 453         char *test;
 454
 455         get_keylist = vconf_keylist_new();
 456         /* ParentDIR parameter of gconf_client_all_entries
 457         can not include the last slash. */
 458         if ('/' == input[strlen(input) - 1] && strlen(input) > 8)
 459                 input[strlen(input) - 1] = '\0';
 460
 461         vconf_get(get_keylist, input, VCONF_GET_ALL);
 462         if (!(temp_node = vconf_keylist_nextnode(get_keylist))) {
 463                 test = strrchr(input, '/');
 464                 if (NULL != test) {
 465                         vconf_keylist_add_null(get_keylist, input);
 466                         if (test - input < 7)
 467                                 *(test + 1) = '\0';
 468                         else
 469                                 *test = '\0';
 470                         vconf_get(get_keylist, input, VCONF_GET_KEY);
 471                         temp_node = vconf_keylist_nextnode(get_keylist);
 472                 } else {
 473                         fprintf(stderr, "Include at least one slash\"/\"\n");
 474                         vconf_keylist_free(get_keylist);
 475                         return;
 476                 }
 477         }
 478         get_num = 0;
 479         print_keylist(get_keylist, temp_node, 0);
 480
 481         if (!get_num)
 482                 printf("No data\n");
 483         vconf_keylist_free(get_keylist);
 484 }
 485
 486 static void recursive_get(char *subDIR, int level)
 487 {
 488         printf("%s", subDIR);
 489
 490         keylist_t *get_keylist;
 491         keynode_t *first_node;
 492
 493         get_keylist = vconf_keylist_new();
 494         vconf_get(get_keylist, subDIR, VCONF_GET_ALL);
 495
 496         if ((first_node = vconf_keylist_nextnode(get_keylist))) {
 497                 print_keylist(get_keylist, first_node, level);
 498         }
 499         vconf_keylist_free(get_keylist);
 500 }
 501
 502 static void print_keylist(keylist_t *keylist, keynode_t *temp_node, int level)
 503 {
 504         do {
 505                 switch (vconf_keynode_get_type(temp_node))
 506                 {
 507                         case VCONF_TYPE_INT:
 508                                 printf("%s, value = %d (int)\n",
 509                                        vconf_keynode_get_name(temp_node),
 510                                        vconf_keynode_get_int(temp_node));
 511                                 get_num++;
 512                                 break;
 513                         case VCONF_TYPE_BOOL:
 514                                 printf("%s, value = %d (bool)\n",
 515                                        vconf_keynode_get_name(temp_node),
 516                                        vconf_keynode_get_bool(temp_node));
 517                                 get_num++;
 518                                 break;
 519                         case VCONF_TYPE_DOUBLE:
 520                                 printf("%s, value = %f (double)\n",
 521                                        vconf_keynode_get_name(temp_node),
 522                                        vconf_keynode_get_dbl(temp_node));
 523                                 get_num++;
 524                                 break;
 525                         case VCONF_TYPE_STRING:
 526                                 printf("%s, value = %s (string)\n",
 527                                        vconf_keynode_get_name(temp_node),
 528                                        vconf_keynode_get_str(temp_node));
 529                                 get_num++;
 530                                 break;
 531                         case VCONF_TYPE_DIR:
 532                                 printf("%s(Directory)\n",
 533                                         vconf_keynode_get_name(temp_node));
 534                                 if (is_recursive)
 535                                         recursive_get(vconf_keynode_get_name(temp_node),
 536                                                       level + 1);
 537                                 break;
 538                         default:
 539                                 /* fprintf(stderr, "Unknown Type(%d)\n", vconf_keynode_get_type(temp_node)); */
 540                                 break;
 541                 }
 542         } while ((temp_node = vconf_keylist_nextnode(keylist)));
 543 }