/*
  The oSIP library implements the Session Initiation Protocol (SIP -rfc3261-)
  Copyright (C) 2001-2020 Aymeric MOIZARD amoizard@antisip.com

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include <osipparser2/internal.h>

#include <osipparser2/osip_port.h>
#include <osipparser2/osip_message.h>
#include <osipparser2/osip_parser.h>

int osip_content_length_init(osip_content_length_t **cl) {
  *cl = (osip_content_length_t *) osip_malloc(sizeof(osip_content_length_t));

  if (*cl == NULL)
    return OSIP_NOMEM;

  (*cl)->value = NULL;
  return OSIP_SUCCESS;
}

/* adds the content_length header to message.       */
/* INPUT : const char *hvalue | value of header.    */
/* OUTPUT: osip_message_t *sip | structure to save results.  */
/* returns -1 on error. */
int osip_message_set_content_length(osip_message_t *sip, const char *hvalue) {
  int i;

  if (hvalue == NULL || hvalue[0] == '\0')
    return OSIP_SUCCESS;

  if (sip->content_length != NULL)
    return OSIP_SYNTAXERROR;

  i = osip_content_length_init(&(sip->content_length));

  if (i != 0)
    return i;

  sip->message_property = 2;
  i = osip_content_length_parse(sip->content_length, hvalue);

  if (i != 0) {
    osip_content_length_free(sip->content_length);
    sip->content_length = NULL;
    return i;
  }

  return OSIP_SUCCESS;
}

int osip_content_length_parse(osip_content_length_t *content_length, const char *hvalue) {
  size_t len;

  if (hvalue == NULL)
    return OSIP_BADPARAMETER;

  len = strlen(hvalue);

  if (len + 1 < 2)
    return OSIP_SYNTAXERROR;

  content_length->value = (char *) osip_malloc(len + 1);

  if (content_length->value == NULL)
    return OSIP_NOMEM;

  osip_strncpy(content_length->value, hvalue, len);
  return OSIP_SUCCESS;
}

#ifndef MINISIZE
/* returns the content_length header.            */
/* INPUT : osip_message_t *sip | sip message.   */
/* returns null on error. */
osip_content_length_t *osip_message_get_content_length(const osip_message_t *sip) {
  return sip->content_length;
}
#endif

/* returns the content_length header as a string.          */
/* INPUT : osip_content_length_t *content_length | content_length header.  */
/* returns null on error. */
int osip_content_length_to_str(const osip_content_length_t *cl, char **dest) {
  if (cl == NULL)
    return OSIP_BADPARAMETER;

  *dest = osip_strdup(cl->value);

  if (*dest == NULL)
    return OSIP_NOMEM;

  return OSIP_SUCCESS;
}

/* deallocates a osip_content_length_t strcture.  */
/* INPUT : osip_content_length_t *content_length | content_length header. */
void osip_content_length_free(osip_content_length_t *content_length) {
  if (content_length == NULL)
    return;

  osip_free(content_length->value);
  osip_free(content_length);
}

int osip_content_length_clone(const osip_content_length_t *ctl, osip_content_length_t **dest) {
  int i;
  osip_content_length_t *cl;

  *dest = NULL;

  if (ctl == NULL)
    return OSIP_BADPARAMETER;

  /*
     empty headers are allowed:
     if (ctl->value==NULL) return -1;
   */
  i = osip_content_length_init(&cl);

  if (i != 0) /* allocation failed */
    return i;

  if (ctl->value != NULL) {
    cl->value = osip_strdup(ctl->value);

    if (cl->value == NULL) {
      osip_content_length_free(cl);
      return OSIP_NOMEM;
    }
  }

  *dest = cl;
  return OSIP_SUCCESS;
}