stream/freesdp/common.c

   1 /*
   2   This file is part of FreeSDP
   3   Copyright (C) 2001,2002,2003 Federico Montesino Pouzols <fedemp@suidzer0.org>
   4
   5   FreeSDP is free software; you can redistribute it and/or modify it
   6   under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9
  10   This program is distributed in the hope that it will be useful,
  11   but WITHOUT ANY WARRANTY; without even the implied warranty of
  12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13   GNU General Public License for more details.
  14
  15   You should have received a copy of the GNU General Public License
  16   along with this program; if not, write to the Free Software
  17   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 */
  19
  20 /**
  21  * @file common.c
  22  *
  23  * @short Implementation of routines common to parse and formatting
  24  * modules .
  25  *
  26  * This file implements the routines that operate over data structures
  27  * that are used in both the parse and formatting modules.
  28  **/
  29
  30 #include "priv.h"
  31 #include "common.h"
  32
  33 static void
  34 safe_free (void *ptr)
  35 {
  36   if (ptr)
  37     free (ptr);
  38 }
  39
  40 fsdp_description_t *
  41 fsdp_description_new (void)
  42 {
  43   fsdp_description_t *result = malloc (sizeof (fsdp_description_t));
  44
  45   result->version = 0;
  46   result->o_username = result->o_session_id =
  47     result->o_announcement_version = NULL;
  48   result->o_network_type = FSDP_NETWORK_TYPE_UNDEFINED;
  49   result->o_address_type = FSDP_ADDRESS_TYPE_UNDEFINED;
  50   result->o_address = NULL;
  51   result->s_name = NULL;
  52   result->i_information = NULL;
  53   result->u_uri = NULL;
  54   result->emails = NULL;
  55   result->emails_count = 0;
  56   result->phones = NULL;
  57   result->phones_count = 0;
  58   /* At first, there is no session-level definition for these
  59      parameters */
  60   result->c_network_type = FSDP_NETWORK_TYPE_UNDEFINED;
  61   result->c_address_type = FSDP_ADDRESS_TYPE_UNDEFINED;
  62   result->c_address.address = NULL;
  63   /* there is no session-level definition for these parameters */
  64   result->bw_modifiers = NULL;
  65   result->bw_modifiers_count = 0;
  66   result->time_periods = NULL;
  67   result->time_periods_count = 0;
  68   result->timezone_adj = NULL;
  69   result->k_encryption_method = FSDP_ENCRYPTION_METHOD_UNDEFINED;
  70   result->k_encryption_content = NULL;
  71   /* Default/undefined values for attributes */
  72   result->a_category = result->a_keywords = result->a_tool = NULL;
  73   result->a_type = FSDP_SESSION_TYPE_UNDEFINED;
  74   result->a_sendrecv_mode = FSDP_SENDRECV_UNDEFINED;
  75   result->a_charset = NULL;
  76   result->a_sdplangs = result->a_langs = NULL;
  77   result->a_controls = NULL;
  78   result->a_range = NULL;
  79   result->a_rtpmaps = NULL;
  80   result->a_rtpmaps_count = 0;
  81   result->a_sdplangs_count = 0;
  82   result->a_langs_count = 0;
  83   result->a_controls_count = 0;
  84   result->unidentified_attributes = NULL;
  85   result->unidentified_attributes_count = 0;
  86   result->media_announcements = NULL;
  87   result->media_announcements_count = 0;
  88
  89   return result;
  90 }
  91
  92 void
  93 fsdp_description_delete (fsdp_description_t * dsc)
  94 {
  95   fsdp_description_recycle (dsc);
  96   safe_free (dsc);
  97 }
  98
  99 void
 100 fsdp_description_recycle (fsdp_description_t * dsc)
 101 {
 102   /* Recursively free all strings and arrays */
 103   unsigned int i, j;
 104
 105   if (!dsc)
 106     return;
 107
 108   safe_free (dsc->o_username);
 109   safe_free (dsc->o_session_id);
 110   safe_free (dsc->o_announcement_version);
 111   safe_free (dsc->o_address);
 112   safe_free (dsc->s_name);
 113   safe_free (dsc->i_information);
 114   safe_free (dsc->u_uri);
 115
 116   for (i = 0; i < dsc->emails_count; i++)
 117     safe_free ((char *) dsc->emails[i]);
 118   safe_free (dsc->emails);
 119
 120   for (i = 0; i < dsc->phones_count; i++)
 121     safe_free ((char *) dsc->phones[i]);
 122   safe_free (dsc->phones);
 123
 124   safe_free (dsc->c_address.address);
 125
 126   for (i = 0; i < dsc->bw_modifiers_count; i++)
 127     safe_free (dsc->bw_modifiers[i].b_unknown_bw_modt);
 128   safe_free (dsc->bw_modifiers);
 129
 130   for (i = 0; i < dsc->time_periods_count; i++)
 131   {
 132     for (j = 0; j < dsc->time_periods[i]->repeats_count; j++)
 133     {
 134       safe_free (dsc->time_periods[i]->repeats[j]->offsets);
 135       safe_free (dsc->time_periods[i]->repeats[j]);
 136     }
 137     safe_free (dsc->time_periods[i]->repeats);
 138     safe_free (dsc->time_periods[i]);
 139   }
 140   safe_free (dsc->time_periods);
 141
 142   safe_free (dsc->timezone_adj);
 143   safe_free (dsc->a_category);
 144   safe_free (dsc->a_keywords);
 145   safe_free (dsc->a_tool);
 146
 147   for (i = 0; i < dsc->a_rtpmaps_count; i++)
 148     safe_free (dsc->a_rtpmaps[i]);
 149   safe_free (dsc->a_rtpmaps);
 150
 151   safe_free (dsc->a_charset);
 152
 153   for (i = 0; i < dsc->a_sdplangs_count; i++)
 154     safe_free (dsc->a_sdplangs[i]);
 155   safe_free (dsc->a_sdplangs);
 156
 157   for (i = 0; i < dsc->a_langs_count; i++)
 158     safe_free (dsc->a_langs[i]);
 159   safe_free (dsc->a_langs);
 160
 161   for (i = 0; i < dsc->a_controls_count; i++)
 162     safe_free (dsc->a_controls[i]);
 163   safe_free (dsc->a_controls);
 164
 165   safe_free (dsc->a_range);
 166
 167   for (i = 0; i < dsc->media_announcements_count; i++)
 168   {
 169     if (!dsc->media_announcements[i]) continue;
 170     for (j = 0; j < dsc->media_announcements[i]->formats_count; j++)
 171       safe_free (dsc->media_announcements[i]->formats[j]);
 172     safe_free (dsc->media_announcements[i]->formats);
 173     safe_free (dsc->media_announcements[i]->i_title);
 174
 175     for (j = 0; j < dsc->media_announcements[i]->bw_modifiers_count; j++)
 176     {
 177       if (FSDP_BW_MOD_TYPE_UNKNOWN ==
 178           dsc->media_announcements[i]->bw_modifiers[j].b_mod_type)
 179         safe_free (dsc->media_announcements[i]->bw_modifiers[j].
 180                    b_unknown_bw_modt);
 181     }
 182     safe_free (dsc->media_announcements[i]->bw_modifiers);
 183
 184     safe_free (dsc->media_announcements[i]->k_encryption_content);
 185
 186     for (j = 0; j < dsc->media_announcements[i]->a_rtpmaps_count; j++)
 187     {
 188       safe_free (dsc->media_announcements[i]->a_rtpmaps[j]->pt);
 189       safe_free (dsc->media_announcements[i]->a_rtpmaps[j]->
 190                  encoding_name);
 191       safe_free (dsc->media_announcements[i]->a_rtpmaps[j]->parameters);
 192       safe_free (dsc->media_announcements[i]->a_rtpmaps[j]);
 193     }
 194     safe_free (dsc->media_announcements[i]->a_rtpmaps);
 195
 196     for (j = 0; j < dsc->media_announcements[i]->a_sdplangs_count; j++)
 197       safe_free (dsc->media_announcements[i]->a_sdplangs[j]);
 198     safe_free (dsc->media_announcements[i]->a_sdplangs);
 199
 200     for (j = 0; j < dsc->media_announcements[i]->a_langs_count; j++)
 201       safe_free (dsc->media_announcements[i]->a_langs[j]);
 202     safe_free (dsc->media_announcements[i]->a_langs);
 203
 204     for (j = 0; j < dsc->media_announcements[i]->a_controls_count; j++)
 205       safe_free (dsc->media_announcements[i]->a_controls[j]);
 206     safe_free (dsc->media_announcements[i]->a_controls);
 207
 208     for (j = 0; j < dsc->media_announcements[i]->a_fmtps_count; j++)
 209       safe_free (dsc->media_announcements[i]->a_fmtps[j]);
 210     safe_free (dsc->media_announcements[i]->a_fmtps);
 211
 212     for (j = 0;
 213          j < dsc->media_announcements[i]->unidentified_attributes_count; j++)
 214       safe_free (dsc->media_announcements[i]->unidentified_attributes[j]);
 215     safe_free (dsc->media_announcements[i]->unidentified_attributes);
 216     safe_free (dsc->media_announcements[i]);
 217   }
 218   safe_free (dsc->media_announcements);
 219
 220   /* This prevents the user to make the library crash when incorrectly
 221      using recycled but not rebuilt descriptions */
 222   dsc->emails_count = 0;
 223   dsc->phones_count = 0;
 224   dsc->bw_modifiers_count = 0;
 225   dsc->time_periods_count = 0;
 226   dsc->media_announcements_count = 0;
 227 }