Hu Chunming / sip_server

/*
  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>

/* fills the call_id of 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_call_id(osip_message_t *sip, const char *hvalue) {
  int i;

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

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

  i = osip_call_id_init(&(sip->call_id));

  if (i != 0)
    return i;

  sip->message_property = 2;
  i = osip_call_id_parse(sip->call_id, hvalue);

  if (i != 0) {
    osip_call_id_free(sip->call_id);
    sip->call_id = NULL;
    return i;
  }

  return OSIP_SUCCESS;
}

#ifndef MINISIZE
/* returns the call_id.               */
/* INPUT : osip_message_t *sip | sip message.  */
osip_call_id_t *osip_message_get_call_id(const osip_message_t *sip) {
  return sip->call_id;
}
#endif

int osip_call_id_init(osip_call_id_t **callid) {
  *callid = (osip_call_id_t *) osip_malloc(sizeof(osip_call_id_t));

  if (*callid == NULL)
    return OSIP_NOMEM;

  (*callid)->number = NULL;
  (*callid)->host = NULL;
  return OSIP_SUCCESS;
}

/* deallocates a osip_call_id_t structure. */
/* INPUT : osip_call_id_t *| callid.       */
void osip_call_id_free(osip_call_id_t *callid) {
  if (callid == NULL)
    return;

  osip_free(callid->number);
  osip_free(callid->host);

  callid->number = NULL;
  callid->host = NULL;

  osip_free(callid);
}

/* fills the call_id structure.                           */
/* INPUT : char *hvalue | value of header.                */
/* OUTPUT: osip_call_id_t *callid | structure to save results.  */
/* returns -1 on error. */
int osip_call_id_parse(osip_call_id_t *callid, const char *hvalue) {
  const char *host;
  const char *end;

  callid->number = NULL;
  callid->host = NULL;

  host = strchr(hvalue, '@'); /* SEARCH FOR '@' */
  end = hvalue + strlen(hvalue);

  if (host == NULL)
    host = end;

  else {
    if (end - host + 1 < 2)
      return OSIP_SYNTAXERROR;

    callid->host = (char *) osip_malloc(end - host);

    if (callid->host == NULL)
      return OSIP_NOMEM;

    osip_clrncpy(callid->host, host + 1, end - host - 1);
  }

  if (host - hvalue + 1 < 2)
    return OSIP_SYNTAXERROR;

  callid->number = (char *) osip_malloc(host - hvalue + 1);

  if (callid->number == NULL)
    return OSIP_NOMEM;

  osip_clrncpy(callid->number, hvalue, host - hvalue);

  return OSIP_SUCCESS; /* ok */
}

/* returns the call_id as a string.          */
/* INPUT : osip_call_id_t *call_id | call_id.  */
/* returns null on error. */
int osip_call_id_to_str(const osip_call_id_t *callid, char **dest) {
  *dest = NULL;

  if ((callid == NULL) || (callid->number == NULL))
    return OSIP_BADPARAMETER;

  if (callid->host == NULL) {
    *dest = (char *) osip_malloc(strlen(callid->number) + 1);

    if (*dest == NULL)
      return OSIP_NOMEM;

    sprintf(*dest, "%s", callid->number);

  } else {
    *dest = (char *) osip_malloc(strlen(callid->number) + strlen(callid->host) + 2);

    if (*dest == NULL)
      return OSIP_NOMEM;

    sprintf(*dest, "%s@%s", callid->number, callid->host);
  }

  return OSIP_SUCCESS;
}

char *osip_call_id_get_number(osip_call_id_t *callid) {
  if (callid == NULL)
    return NULL;

  return callid->number;
}

char *osip_call_id_get_host(osip_call_id_t *callid) {
  if (callid == NULL)
    return NULL;

  return callid->host;
}

void osip_call_id_set_number(osip_call_id_t *callid, char *number) {
  callid->number = number;
}

void osip_call_id_set_host(osip_call_id_t *callid, char *host) {
  callid->host = host;
}

int osip_call_id_clone(const osip_call_id_t *callid, osip_call_id_t **dest) {
  int i;
  osip_call_id_t *ci;

  *dest = NULL;

  if (callid == NULL)
    return OSIP_BADPARAMETER;

  if (callid->number == NULL)
    return OSIP_BADPARAMETER;

  i = osip_call_id_init(&ci);

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

  ci->number = osip_strdup(callid->number);

  if (callid->host != NULL)
    ci->host = osip_strdup(callid->host);

  *dest = ci;
  return OSIP_SUCCESS;
}

int osip_call_id_match(osip_call_id_t *callid1, osip_call_id_t *callid2) {
  if (callid1 == NULL || callid2 == NULL)
    return OSIP_BADPARAMETER;

  if (callid1->number == NULL || callid2->number == NULL)
    return OSIP_BADPARAMETER;

  if (0 != strcmp(callid1->number, callid2->number))
    return OSIP_UNDEFINED_ERROR;

  if ((callid1->host == NULL) && (callid2->host == NULL))
    return OSIP_SUCCESS;

  if ((callid1->host == NULL) && (callid2->host != NULL))
    return OSIP_UNDEFINED_ERROR;

  if ((callid1->host != NULL) && (callid2->host == NULL))
    return OSIP_UNDEFINED_ERROR;

  if (0 != strcmp(callid1->host, callid2->host))
    return OSIP_UNDEFINED_ERROR;

  return OSIP_SUCCESS;
}