libfrontend/conf.c

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*****************************************************************************
   3  *
   4  * $Id: conf.c,v 1.2 2004/05/21 23:42:49 nedko Exp $
   5  *
   6  * DESCRIPTION:
   7  *  Mediadatabase configuration file handling.
   8  *
   9  * AUTHOR:
  10  *  Nedko Arnaudov <nedko@users.sourceforge.net>
  11  *
  12  * LICENSE:
  13  *  GNU GENERAL PUBLIC LICENSE version 2
  14  *
  15  *****************************************************************************/
  16
  17 #include <stdlib.h>
  18 #include <string.h>
  19 #include <cfl.h>
  20
  21 #include "../result.h"
  22 #include "conf.h"
  23 #include "error.h"
  24 #include "db.h"
  25 #include "disk.h"
  26
  27 #define CONF_FILE            ".mediadatabase"
  28 #define CFL_SECTION_GLOBAL   NULL
  29 #define CFL_SECTION_CUI      "cui"
  30 #define CFL_SECTION_MYSQL    "MySQL"
  31 #define CFL_SECTION_SQLITE   "SQLite"
  32 #define CFL_VALUE_MYSQL_HOST "host"
  33 #define CFL_VALUE_MYSQL_USER "user"
  34 #define CFL_VALUE_MYSQL_PASS "pass"
  35 #define CFL_VALUE_MYSQL_DB   "db"
  36 #define CFL_VALUE_MOUNT      "mount"
  37 #define CFL_VALUE_UNMOUNT    "unmount"
  38 #define CFL_VALUE_MOUNTDIR   "mountdir"
  39 #define CFL_VALUE_SQLITE_DB  "dbfile"
  40 #define CFL_VALUE_BACKEND    "backend"
  41
  42 mediadb_result
  43 conf_parse()
  44 {
  45   mediadb_result r;
  46   size_t s;
  47   const char *pszHOME;
  48   char *pszConf;
  49   int nRet;
  50   cflh_t hConf;
  51   FILE *hFile;
  52   char *pszCFLValue;
  53   cfl_value_type_t CFLValueType;
  54
  55   pszHOME = getenv("HOME");
  56   hFile = NULL;
  57   hConf = NULL;
  58   pszConf = NULL;
  59
  60   if (pszHOME == NULL)
  61   {
  62     mediadb_error_callback(
  63       MEDIADB_ERROR_CRITICAL,
  64       "HOME environment variable not set.");
  65     r = MEDIADB_NO_HOME;
  66     goto Exit;
  67   }
  68
  69   s = strlen(pszHOME) + 1 + strlen(CONF_FILE) + 1;
  70
  71   pszConf = (char *)malloc(s);
  72   if (pszConf == NULL)
  73   {
  74     mediadb_error_callback(
  75       MEDIADB_ERROR_CRITICAL,
  76       "Out of memory.");
  77     r = MEDIADB_MEM;
  78     goto Exit;
  79   }
  80
  81   sprintf(pszConf, "%s/%s", pszHOME, CONF_FILE);
  82
  83   hFile = fopen(pszConf, "r");
  84   if (hFile == NULL)
  85   {
  86     mediadb_error_printf(
  87       MEDIADB_ERROR_CRITICAL,
  88       "Cannot open configuration file \"%s\".",
  89       pszConf);
  90     r = MEDIADB_FAIL;
  91     goto Exit;
  92   }
  93
  94   hConf = cfl_alloc();
  95   if (hConf == NULL)
  96   {
  97     mediadb_error_callback(
  98       MEDIADB_ERROR_CRITICAL,
  99       "Out of memory.");
 100     r = MEDIADB_MEM;
 101     goto Exit;
 102   }
 103
 104   nRet = cfl_init_from_file(
 105     hConf,
 106     hFile,
 107     CFL_FILE_TYPE_DEFAULT);
 108   if (nRet != 0)
 109   {
 110     mediadb_error_printf(
 111       MEDIADB_ERROR_CRITICAL,
 112       "cfl_init_from_file() failed. (%s)",
 113       cfl_errcode_to_message(nRet));
 114     goto Exit;
 115   }
 116
 117   pszCFLValue = cfl_value_get_by_name(
 118     hConf,
 119     CFL_SECTION_GLOBAL,
 120     CFL_VALUE_MOUNT,
 121     &CFLValueType);
 122
 123   if (pszCFLValue != NULL &&
 124       CFLValueType == CFL_TYPE_STRING)
 125   {
 126     r = disk_set_mount_command(pszCFLValue);
 127     if (MEDIADB_IS_ERROR(r))
 128     {
 129       goto Exit;
 130     }
 131   }
 132
 133   pszCFLValue = cfl_value_get_by_name(
 134     hConf,
 135     CFL_SECTION_GLOBAL,
 136     CFL_VALUE_UNMOUNT,
 137     &CFLValueType);
 138
 139   if (pszCFLValue != NULL &&
 140       CFLValueType == CFL_TYPE_STRING)
 141   {
 142     r = disk_set_unmount_command(pszCFLValue);
 143     if (MEDIADB_IS_ERROR(r))
 144     {
 145       goto Exit;
 146     }
 147   }
 148
 149   pszCFLValue = cfl_value_get_by_name(
 150     hConf,
 151     CFL_SECTION_GLOBAL,
 152     CFL_VALUE_MOUNTDIR,
 153     &CFLValueType);
 154
 155   if (pszCFLValue != NULL &&
 156       CFLValueType == CFL_TYPE_STRING)
 157   {
 158     r = disk_set_path(pszCFLValue);
 159     if (MEDIADB_IS_ERROR(r))
 160     {
 161       goto Exit;
 162     }
 163   }
 164
 165   pszCFLValue = cfl_value_get_by_name(
 166     hConf,
 167     CFL_SECTION_MYSQL,
 168     CFL_VALUE_MYSQL_HOST,
 169     &CFLValueType);
 170
 171   if (pszCFLValue != NULL &&
 172       CFLValueType == CFL_TYPE_STRING)
 173   {
 174     r = db_set_mysql_host(pszCFLValue);
 175     if (MEDIADB_IS_ERROR(r))
 176     {
 177       goto Exit;
 178     }
 179   }
 180
 181   pszCFLValue = cfl_value_get_by_name(
 182     hConf,
 183     CFL_SECTION_MYSQL,
 184     CFL_VALUE_MYSQL_DB,
 185     &CFLValueType);
 186
 187   if (pszCFLValue != NULL &&
 188       CFLValueType == CFL_TYPE_STRING)
 189   {
 190     r = db_set_mysql_database(pszCFLValue);
 191     if (MEDIADB_IS_ERROR(r))
 192     {
 193       goto Exit;
 194     }
 195   }
 196
 197   pszCFLValue = cfl_value_get_by_name(
 198     hConf,
 199     CFL_SECTION_MYSQL,
 200     CFL_VALUE_MYSQL_USER,
 201     &CFLValueType);
 202
 203   if (pszCFLValue != NULL &&
 204       CFLValueType == CFL_TYPE_STRING)
 205   {
 206     r = db_set_mysql_user(pszCFLValue);
 207     if (MEDIADB_IS_ERROR(r))
 208     {
 209       goto Exit;
 210     }
 211   }
 212
 213   pszCFLValue = cfl_value_get_by_name(
 214     hConf,
 215     CFL_SECTION_MYSQL,
 216     CFL_VALUE_MYSQL_PASS,
 217     &CFLValueType);
 218
 219   if (pszCFLValue != NULL &&
 220       CFLValueType == CFL_TYPE_STRING)
 221   {
 222     r = db_set_mysql_pass(pszCFLValue);
 223     if (MEDIADB_IS_ERROR(r))
 224     {
 225       goto Exit;
 226     }
 227   }
 228
 229   pszCFLValue = cfl_value_get_by_name(
 230     hConf,
 231     CFL_SECTION_SQLITE,
 232     CFL_VALUE_SQLITE_DB,
 233     &CFLValueType);
 234
 235   if (pszCFLValue != NULL &&
 236       CFLValueType == CFL_TYPE_STRING)
 237   {
 238     r = db_set_sqlite_database(pszCFLValue);
 239     if (MEDIADB_IS_ERROR(r))
 240     {
 241       goto Exit;
 242     }
 243   }
 244
 245   pszCFLValue = cfl_value_get_by_name(
 246     hConf,
 247     CFL_SECTION_GLOBAL,
 248     CFL_VALUE_BACKEND,
 249     &CFLValueType);
 250
 251   if (pszCFLValue != NULL &&
 252       CFLValueType == CFL_TYPE_STRING)
 253   {
 254     if (strcmp(pszCFLValue, CFL_SECTION_SQLITE) == 0)
 255     {
 256       db_use_sqlite();
 257     }
 258     else if (strcmp(pszCFLValue, CFL_SECTION_MYSQL) == 0)
 259     {
 260       db_use_mysql();
 261     }
 262   }
 263
 264   r = MEDIADB_OK;
 265
 266 Exit:
 267   if (hConf != NULL)
 268   {
 269     cfl_free(hConf);
 270   }
 271
 272   if (hFile != NULL)
 273   {
 274     fclose(hFile);
 275   }
 276
 277   if (pszConf != NULL)
 278   {
 279     free(pszConf);
 280   }
 281
 282   return r;
 283 }
 284
 285 /*****************************************************************************
 286  *
 287  * Modifications log:
 288  *
 289  * !!! WARNING !!! Following lines are automatically updated by the CVS system.
 290  *
 291  *   $Log: conf.c,v $
 292  *   Revision 1.2  2004/05/21 23:42:49  nedko
 293  *   mediadb_error_callback() now tells if error is critical.
 294  *
 295  *   Revision 1.1  2004/05/16 19:01:17  nedko
 296  *   libfrontend holds code common to frontends but not in libdb.
 297  *
 298  *****************************************************************************/