nua_params.c 47.6 KB
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/*
 * This file is part of the Sofia-SIP package
 *
 * Copyright (C) 2006 Nokia Corporation.
 *
 * Contact: Pekka Pessi <pekka.pessi@nokia.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., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

/**@CFILE nua_register.c
 * @brief REGISTER and registrations
 *
 * @author Pekka Pessi <Pekka.Pessi@nokia.com>
 *
 * @date Created: Wed Mar  8 11:48:49 EET 2006 ppessi
 */

#include "config.h"

#include <sofia-sip/string0.h>
#include <sofia-sip/su_strlst.h>
#include <sofia-sip/token64.h>
#include <sofia-sip/su_tagarg.h>
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#include <sofia-sip/su_tag_inline.h>
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#include <sofia-sip/bnf.h>

#include <sofia-sip/sip_protos.h>
#include <sofia-sip/sip_util.h>
#include <sofia-sip/sip_status.h>
#include <sofia-sip/msg_parser.h>

#include "nua_stack.h"

#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>

#include <assert.h>

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#if !HAVE_STRCASESTR
char *strcasestr(char const *haystack, char const *needle);
#endif

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/* ====================================================================== */
/* Helper macros and functions for handling #nua_handle_preferences_t. */

#define NHP_IS_ANY_SET(nhp) nhp_is_any_set((nhp))

/** Check if any preference is set in @a nhp. */
su_inline int nhp_is_any_set(nua_handle_preferences_t const *nhp)
{
  char nhp_zero[sizeof nhp->nhp_set] = { 0 };
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  return memcmp(&nhp->nhp_set, nhp_zero, sizeof nhp->nhp_set) != 0;
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}

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/** Copy set parameters from @a b to @a a.
 *
 * If preference is set in @a b, mark it set also in @a a.
 */
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su_inline void nhp_or_set(nua_handle_preferences_t *a,
			  nua_handle_preferences_t const *b)
{
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  unsigned *ap = a->nhp_set_.set_unsigned;
  unsigned const *bp = b->nhp_set_.set_unsigned;
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  size_t i;
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  memcpy(a, b, offsetof(nua_handle_preferences_t, nhp_set));

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  for (i = 0; i < (sizeof a->nhp_set); i += (sizeof *ap))
    *ap++ |= *bp++;
}

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static int nhp_set_tags(su_home_t *home, 
			nua_handle_preferences_t *nhp,
			int global,
			tagi_t const *tags);
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static int nhp_merge_lists(su_home_t *home,
			   msg_hclass_t *hc,
			   msg_list_t **return_new_list,
			   msg_list_t const *old_list,
			   int already_set,
			   int already_parsed,
			   int always_merge,
			   tag_value_t value);
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static
nua_handle_preferences_t *nhp_move_params(su_home_t *home,
					  nua_handle_preferences_t *dst,
					  su_home_t *tmphome,
					  nua_handle_preferences_t const *src);
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/* ====================================================================== */
/* Magical NUTAG_USER_AGENT() - add NHP_USER_AGENT there if it is not there */

#define NHP_USER_AGENT PACKAGE_NAME "/" PACKAGE_VERSION

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static int already_contains_package_name(char const *s)
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{
  char const pn[] = " " PACKAGE_NAME "/";
  size_t pnlen = strlen(pn + 1);
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  return strncasecmp(s, pn + 1, pnlen) == 0 || strcasestr(s, pn);
}
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/* ====================================================================== */
/* Stack and handle parameters */

static int nua_stack_set_smime_params(nua_t *nua, tagi_t const *tags);

/** @internal Methods allowed by default. */
static char const nua_allow_str[] =
"INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, "
"MESSAGE, SUBSCRIBE, NOTIFY, REFER, UPDATE";

/** @internal Set default parameters */
int nua_stack_set_defaults(nua_handle_t *nh, 
			   nua_handle_preferences_t *nhp)
{
  su_home_t *home = (su_home_t *)nh;

  /* Set some defaults */
  NHP_SET(nhp, retry_count, 3);
  NHP_SET(nhp, max_subscriptions, 20);

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  NHP_SET(nhp, media_enable, 1);
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  NHP_SET(nhp, invite_enable, 1);
  NHP_SET(nhp, auto_alert, 0);
  NHP_SET(nhp, early_media, 0);
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  NHP_SET(nhp, only183_100rel, 0);
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  NHP_SET(nhp, auto_answer, 0);
  NHP_SET(nhp, auto_ack, 1);
  NHP_SET(nhp, invite_timeout, 120);

  NHP_SET(nhp, session_timer, 1800);
  NHP_SET(nhp, min_se, 120);
  NHP_SET(nhp, refresher, nua_no_refresher);
  NHP_SET(nhp, update_refresh, 0);

  NHP_SET(nhp, message_enable, 1);
  NHP_SET(nhp, win_messenger_enable, 0);
  if (getenv("PIMIW_HACK") != 0)
    NHP_SET(nhp, message_auto_respond, 1);

  NHP_SET(nhp, media_features,  0);
  NHP_SET(nhp, callee_caps, 0);
  NHP_SET(nhp, service_route_enable, 1);
  NHP_SET(nhp, path_enable, 1);

  NHP_SET(nhp, refer_expires, 300);
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  NHP_SET(nhp, refer_with_id, 1);
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  NHP_SET(nhp, substate, nua_substate_active);

  NHP_SET(nhp, allow, sip_allow_make(home, nua_allow_str));
  NHP_SET(nhp, supported, sip_supported_make(home, "timer, 100rel"));
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  NHP_SET(nhp, user_agent, su_strdup(home, NHP_USER_AGENT));
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  NHP_SET(nhp, outbound, su_strdup(home, "natify"));
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  NHP_SET(nhp, keepalive, 120000);
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  NHP_SET(nhp, appl_method,
	  sip_allow_make(home, "INVITE, REGISTER, PUBLISH, SUBSCRIBE"));

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  if (!nhp->nhp_allow ||
      !nhp->nhp_supported ||
      !nhp->nhp_user_agent ||
      !nhp->nhp_outbound)
    return -1;

  return 0;
}

/** @internal Set the default from field */
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int nua_stack_set_from(nua_t *nua, int initial, tagi_t const *tags)
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{
  sip_from_t const *from = NONE;
  char const *str = NONE;
  sip_from_t *f = NULL,  f0[1];

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  char const *uicc_name = "default";

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  tl_gets(tags,
	  /* By nua_stack_set_from() */
	  SIPTAG_FROM_REF(from),
	  SIPTAG_FROM_STR_REF(str),
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	  NUTAG_UICC_REF(uicc_name),
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	  TAG_END());

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#if HAVE_UICC_H
  if (initial && uicc_name)
    nua->nua_uicc = uicc_create(root, uicc_name);
#endif

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  if (!initial && from == NONE && str == NONE)
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    return 0;
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  sip_from_init(f0);

  if (from && from != NONE) {
    f0->a_display = from->a_display;
    *f0->a_url = *from->a_url;
    f = sip_from_dup(nua->nua_home, f0);
  }
  else if (str && str != NONE) {
    f = sip_from_make(nua->nua_home, str);
    if (f)
      *f0 = *f, f = f0, f->a_params = NULL;
  }
  else {
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    sip_contact_t const *m;

    m = nua_stack_get_contact(nua->nua_registrations);
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    if (m) {
      f0->a_display = m->m_display;
      *f0->a_url = *m->m_url;
      f = sip_from_dup(nua->nua_home, f0);
    }
  }

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  if (!f)
    return -1;

  *nua->nua_from = *f;
  return 0;
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}

/** @internal Initialize instance ID. */
int nua_stack_init_instance(nua_handle_t *nh, tagi_t const *tags)
{
  nua_handle_preferences_t *nhp = nh->nh_prefs;

  char const *instance = NONE;

  tl_gets(tags, NUTAG_INSTANCE_REF(instance), TAG_END());

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  if (instance != NONE) {
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    NHP_SET(nhp, instance, su_strdup(nh->nh_home, instance));
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    if (instance && !nhp->nhp_instance)
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      return -1;
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  }

  return 0;
}

/**@fn void nua_set_params(nua_t *nua, tag_type_t tag, tag_value_t value, ...)
 *
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 * Set @nua parameters, shared by all handles.
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 *
 * @param nua             Pointer to NUA stack object
 * @param tag, value, ... List of tagged parameters
 *
 * @return
 *     nothing
 *
 * @par Related tags:
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 *   NUTAG_ALLOW(), SIPTAG_ALLOW(), and SIPTAG_ALLOW_STR() \n
 *   NUTAG_ALLOW_EVENTS(), SIPTAG_ALLOW_EVENTS(), and 
 *                         SIPTAG_ALLOW_EVENTS_STR() \n
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 *   NUTAG_AUTOACK() \n
 *   NUTAG_AUTOALERT() \n
 *   NUTAG_AUTOANSWER() \n
 *   NUTAG_CALLEE_CAPS() \n
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 *   NUTAG_DETECT_NETWORK_UPDATES() \n
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 *   NUTAG_EARLY_ANSWER() \n
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 *   NUTAG_EARLY_MEDIA() \n
 *   NUTAG_ENABLEINVITE() \n
 *   NUTAG_ENABLEMESSAGE() \n
 *   NUTAG_ENABLEMESSENGER() \n
 *   NUTAG_INSTANCE() \n
 *   NUTAG_INVITE_TIMER() \n
 *   NUTAG_KEEPALIVE() \n
 *   NUTAG_KEEPALIVE_STREAM() \n
 *   NUTAG_MAX_SUBSCRIPTIONS() \n
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 *   NUTAG_MEDIA_ENABLE() \n
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 *   NUTAG_MEDIA_FEATURES() \n
 *   NUTAG_MIN_SE() \n
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 *   NUTAG_M_DISPLAY() \n
 *   NUTAG_M_FEATURES() \n
 *   NUTAG_M_PARAMS() \n
 *   NUTAG_M_USERNAME() \n
 *   NUTAG_ONLY183_100REL() \n
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 *   NUTAG_OUTBOUND() \n
 *   NUTAG_PATH_ENABLE() \n
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 *   NUTAG_REFER_EXPIRES() \n
 *   NUTAG_REFER_WITH_ID() \n
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 *   NUTAG_REGISTRAR() \n
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 *   NUTAG_RETRY_COUNT() \n
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 *   NUTAG_SERVICE_ROUTE_ENABLE() \n
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 *   NUTAG_SESSION_REFRESHER() \n
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 *   NUTAG_SESSION_TIMER() \n
 *   NUTAG_SMIME_ENABLE() \n
 *   NUTAG_SMIME_KEY_ENCRYPTION() \n
 *   NUTAG_SMIME_MESSAGE_DIGEST() \n
 *   NUTAG_SMIME_MESSAGE_ENCRYPTION() \n
 *   NUTAG_SMIME_OPT() \n
 *   NUTAG_SMIME_PROTECTION_MODE() \n
 *   NUTAG_SMIME_SIGNATURE() \n
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 *   NUTAG_SOA_NAME() \n
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 *   NUTAG_SUBSTATE() \n
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 *   NUTAG_SUPPORTED(), SIPTAG_SUPPORTED(), and SIPTAG_SUPPORTED_STR() \n
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 *   NUTAG_UPDATE_REFRESH() \n
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 *   NUTAG_USER_AGENT(), SIPTAG_USER_AGENT() and SIPTAG_USER_AGENT_STR() \n
 *   SIPTAG_ORGANIZATION() and SIPTAG_ORGANIZATION_STR() \n
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 *
 * nua_set_params() also accepts any soa tags, defined in
 * <sofia-sip/soa_tag.h>, and nta tags, defined in <sofia-sip/nta_tag.h>.
 * 
 * @par Events:
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 *     #nua_r_set_params
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 *
 * @par SIP Header as NUA Parameters
 * The @nua parameters include SIP headers @Allow, @Supported, @Organization,
 * @UserAgent and @From. They are included in most of the SIP messages sent
 * by @nua. They are set in the same way as the tagged arguments are
 * used to populate a SIP message.
 * @par
 * When multiple tags for the same header are specified, the behaviour
 * depends on the header type. If only a single header field can be included
 * in a SIP message, the latest non-NULL value is used, e.g., @Organization. 
 * However, if the SIP header can consist of multiple lines or header fields
 * separated by comma, in this case, @Allow and @Supported, all the tagged
 * values are concatenated.
 * @par
 * However, if the tag value is #SIP_NONE (-1 casted as a void pointer), the
 * values from previous tags are ignored.
 *
 * For example, the nua_set_params() call like this:
 * @code
 * nua_set_params(nua,
 *                SIPTAG_USER_AGENT_STR("tester/1.0"),
 *                SIPTAG_ALLOW_STR("INVITE,CANCEL,BYE,ACK"),
 *                SIPTAG_ORGANIZATION(NULL),
 *                SIPTAG_USER_AGENT(NULL),
 *                SIPTAG_ALLOW(SIP_NONE),
 *                TAG_END());
 * @endcode
 * will leave @Allow and @Organization headers empty. The @UserAgent header
 * will contain value "tester/1.0".
 * @code
 * nua_set_params(nua,
 *                SIPTAG_ORGANIZATION_STR("Malevolent Microwavers"),
 *                SIPTAG_ALLOW_STR("OPTIONS"),
 *                SIPTAG_ALLOW(SIP_NONE),
 *                SIPTAG_ORGANIZATION_STR("The Phone Company"),
 *                SIPTAG_ALLOW_STR("SUBSCRIBE"),
 *                SIPTAG_ALLOW(NULL),
 *                SIPTAG_ORGANIZATION_STR(NULL),
 *                TAG_END());
 * @endcode
 * sets the header @Allow with value <code>SUBSCRIBE</code> and the
 * header @Organization will have value <code>The Phone Company</code>.
 *
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 */

/**@fn void nua_set_hparams(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...);
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 *
 * Set the handle-specific parameters.
 *
 * The handle-specific parameters override default or global parameters set
 * by nua_set_params(). The handle-specific parameters are set by several
 * other operations: nua_invite(), nua_respond(), nua_ack(),
 * nua_prack(), nua_update(), nua_info(), nua_bye(), nua_options(),
 * nua_message(), nua_register(), nua_publish(), nua_refer(),
 * nua_subscribe(), nua_notify(), nua_refer(), and nua_notifier().
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 *
 * @param nh              Pointer to a NUA handle
 * @param tag, value, ... List of tagged parameters
 *
 * @return
 *     nothing
 *
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 * @par Tags Used to Set Handle-Specific Parameters:
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 *   NUTAG_ALLOW(), SIPTAG_ALLOW(), and SIPTAG_ALLOW_STR() \n
 *   NUTAG_ALLOW_EVENTS(), SIPTAG_ALLOW_EVENTS(), and 
 *                         SIPTAG_ALLOW_EVENTS_STR() \n
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 *   NUTAG_AUTOACK() \n
 *   NUTAG_AUTOALERT() \n
 *   NUTAG_AUTOANSWER() \n
 *   NUTAG_CALLEE_CAPS() \n
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 *   NUTAG_EARLY_ANSWER() \n
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 *   NUTAG_EARLY_MEDIA() \n
 *   NUTAG_ENABLEINVITE() \n
 *   NUTAG_ENABLEMESSAGE() \n
 *   NUTAG_ENABLEMESSENGER() \n
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 *   NUTAG_INSTANCE() \n
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 *   NUTAG_INVITE_TIMER() \n
 *   NUTAG_KEEPALIVE() \n
 *   NUTAG_KEEPALIVE_STREAM() \n
 *   NUTAG_MAX_SUBSCRIPTIONS() \n
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 *   NUTAG_MEDIA_ENABLE() \n
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 *   NUTAG_MEDIA_FEATURES() \n
 *   NUTAG_MIN_SE() \n
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 *   NUTAG_M_DISPLAY() \n
 *   NUTAG_M_FEATURES() \n
 *   NUTAG_M_PARAMS() \n
 *   NUTAG_M_USERNAME() \n
 *   NUTAG_ONLY183_100REL() \n
 *   NUTAG_OUTBOUND() \n
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 *   NUTAG_PATH_ENABLE() \n
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 *   NUTAG_REFER_EXPIRES() \n
 *   NUTAG_REFER_WITH_ID() \n
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 *   NUTAG_REGISTRAR() \n
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 *   NUTAG_RETRY_COUNT() \n
 *   NUTAG_SERVICE_ROUTE_ENABLE() \n
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 *   NUTAG_SESSION_REFRESHER() \n
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 *   NUTAG_SESSION_TIMER() \n
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 *   NUTAG_SOA_NAME() \n
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 *   NUTAG_SUBSTATE() \n
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 *   NUTAG_SUPPORTED(), SIPTAG_SUPPORTED(), and SIPTAG_SUPPORTED_STR() \n
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 *   NUTAG_UPDATE_REFRESH() \n
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 *   NUTAG_USER_AGENT(), SIPTAG_USER_AGENT() and SIPTAG_USER_AGENT_STR() \n
 *   SIPTAG_ORGANIZATION() and SIPTAG_ORGANIZATION_STR() \n
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 * Any soa tags are also considered as handle-specific parameters. They are
 * defined in <sofia-sip/soa_tag.h>.
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 *
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 * The global parameters that can not be set by nua_set_hparams() include 
 * NUTAG_DETECT_NETWORK_UPDATES(), NUTAG_SMIME_* tags, and all NTA tags.
 * 
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 * @par Events:
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 *     #nua_r_set_params
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 */

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/** @NUA_EVENT nua_r_set_params
 *
 * Response to nua_set_params() or nua_set_hparams().
 *
 * @param status 200 when successful, error code otherwise
 * @param phrase a short textual description of @a status code
 * @param nh     NULL when responding to nua_set_params(),
 *               operation handle when responding to nua_set_hparams()
 * @param hmagic NULL when responding to nua_set_params(),
 *               application contact associated with the operation handle 
 *               when responding to nua_set_hparams()
 * @param sip    NULL
 * @param tags   None
 *
 * @sa nua_set_params(), nua_set_hparams(), 
 * #nua_r_get_params, nua_get_params(), nua_get_hparams()
 *
 * @END_NUA_EVENT
 */

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int nua_stack_set_params(nua_t *nua, nua_handle_t *nh, nua_event_t e,
			 tagi_t const *tags)
{
  nua_handle_t *dnh = nua->nua_dhandle;
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  nua_handle_preferences_t tmp[1], *nhp = nh->nh_prefs;
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  nua_handle_preferences_t const *dnhp = dnh->nh_prefs;

  su_home_t tmphome[1] = { SU_HOME_INIT(tmphome) };

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  tagi_t const *ptags;
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  int error, global;
  int status = 900;
  char const *phrase = "Error storing parameters";
  sip_supported_t const *supported = NULL;
  sip_allow_t const *allow = NULL;
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  sip_allow_events_t const *allow_events = NULL;
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  sip_allow_t const *appl_method = NULL;
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  enter;
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  ptags = !nh->nh_used_ptags ? nh->nh_ptags : NULL;
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  *tmp = *nhp; NHP_UNSET_ALL(tmp);

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  /* Supported features, allowed methods and events are merged 
     with previous ones */
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  if (!NHP_ISSET(nhp, supported)) 
    supported = tmp->nhp_supported = dnhp->nhp_supported;
  if (!NHP_ISSET(nhp, allow)) 
    allow = tmp->nhp_allow = dnhp->nhp_allow;
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  if (!NHP_ISSET(nhp, allow_events)) 
    allow_events = tmp->nhp_allow_events = dnhp->nhp_allow_events;
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  if (!NHP_ISSET(nhp, appl_method)) 
    appl_method = tmp->nhp_appl_method = dnhp->nhp_appl_method;
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  error = 0;
  global = nh == dnh;			/* save also stack-specific params */
    
  /* Set and save parameters to tmp */
  if (nhp_set_tags(tmphome, tmp, global, ptags) < 0)
    error = 1, phrase = "Error storing default handle parameters";
  else if (nhp_set_tags(tmphome, tmp, global, tags) < 0)
    error = 1, phrase = "Error storing parameters";
  else {
    if (NHP_IS_ANY_SET(tmp)) {
      if (tmp->nhp_supported == supported)
	tmp->nhp_supported = NULL;
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      if (tmp->nhp_allow == allow)
	tmp->nhp_allow = NULL;
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      if (tmp->nhp_allow_events == allow_events)
	tmp->nhp_allow_events = NULL;
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      if (tmp->nhp_appl_method == appl_method)
	tmp->nhp_appl_method = NULL;

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      /* Move parameters from tmp to nhp (or allocate new nhp) */
      if (nh != dnh && nhp == dnh->nh_prefs)
	nhp = NULL;
      nhp = nhp_move_params(nh->nh_home, nhp, tmphome, tmp);

      if (nhp)
	nh->nh_prefs = nhp;
      else
	/* Fail miserably with ENOMEM */
	error = 1, status = 900, phrase = su_strerror(ENOMEM);
    }

    if (!error)
      nh->nh_used_ptags = 1;
  }

  su_home_deinit(tmphome);

  if (error)
    ;
  else if (!nh->nh_soa && NHP_GET(nhp, dnhp, media_enable)) {
    /* Create soa when needed */
    char const *soa_name = NHP_GET(nhp, dnhp, soa_name);

    if (dnh->nh_soa)
      nh->nh_soa = soa_clone(dnh->nh_soa, nua->nua_root, nh);
    else  
      nh->nh_soa = soa_create(soa_name, nua->nua_root, nh);
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    ptags = nh->nh_ptags;

    if (!nh->nh_soa)
      error = 1, status = 900, phrase = "Error Creating SOA Object";
  }
  else if (nh->nh_soa && !NHP_GET(nhp, dnhp, media_enable)) {
    /* ... destroy soa when not needed */
    soa_destroy(nh->nh_soa), nh->nh_soa = NULL;
  }

  if (!error && nh->nh_soa) {
    if ((ptags && soa_set_params(nh->nh_soa, TAG_NEXT(ptags)) < 0) ||
	(tags && soa_set_params(nh->nh_soa, TAG_NEXT(tags)) < 0))
      error = 1, status = 900, phrase = "Error Setting SOA Parameters";
  }

  if (error || nh != dnh) {
    ;
  }
  else if (nua_stack_set_smime_params(nua, tags) < 0) {
    error = 1, status = 900, phrase = "Error setting S/MIME parameters";
  }
  else if (!nua->nua_nta) {
  }
  /* Set stack-specific things below */
  else if (nta_agent_set_params(nua->nua_nta, TAG_NEXT(tags)) < 0) {
    status = 900, phrase = "Error setting NTA parameters";
    error = 1;
  }
  else {
    nua_stack_set_from(nua, 0, tags);
    if (NHP_ISSET(nhp, detect_network_updates))
      nua_stack_launch_network_change_detector(nua);
  }

  if (error) {
    if (e == nua_i_none)
      SU_DEBUG_1(("nua_set_params(): failed: %s\n", phrase));
    return UA_EVENT2(e, status, phrase), -1;
  }

  if (e == nua_r_set_params)
    UA_EVENT2(e, 200, "OK");

  return 0;
}

/** Parse parameters from tags to @a nhp.
 *
 * @param home allocate new values from @a home
 * @param nhp  structure to store handle preferences
 * @param global  if true, save also global parameters
 * @param tags list of tags to parse
 */
604 605 606 607
static int nhp_set_tags(su_home_t *home, 
			nua_handle_preferences_t *nhp,
			int global,
			tagi_t const *tags)
608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678
{

/* Set copy of string to handle pref structure */
#define NHP_SET_STR(nhp, name, v)				 \
  if ((v) != (tag_value_t)0) {					 \
    char const *_value = (char const *)v;			 \
    char *_new = _value ? su_strdup(home, _value) : NULL;	 \
    if (NHP_ISSET(nhp, name))					 \
      su_free(home, (void *)nhp->nhp_##name);			 \
    NHP_SET(nhp, name, _new);					 \
    if (_new == NULL && _value != NULL)				 \
      return -1;						 \
  }

/* Set copy of string from url to handle pref structure */
#define NHP_SET_STR_BY_URL(nhp, name, v)			 \
  if ((v) != (tag_value_t)-1) {					 \
    url_t const *_value = (url_t const *)(v);			 \
    char *_new;							 \
    _new = url_as_string(home, (void *)_value);			 \
    if (NHP_ISSET(nhp, name))					 \
      su_free(home, (void *)nhp->nhp_##name);			 \
    NHP_SET(nhp, name, _new);					 \
    if (_new == NULL && _value != NULL)				 \
      return -1;						 \
  }

/* Set copy of header to handle pref structure */
#define NHP_SET_HEADER(nhp, name, v)				 \
  if ((v) != 0) {						 \
    sip_##name##_t const *_value = (sip_##name##_t const *)(v);	 \
    sip_##name##_t *_new = NULL;				 \
    if (_value != SIP_NONE)					 \
      _new = sip_##name##_dup(home, _value);			 \
    if (NHP_ISSET(nhp, name))					 \
      msg_header_free_all(home, (void *)nhp->nhp_##name);	 \
    NHP_SET(nhp, name, _new);					 \
    if (_new == NULL && _value != SIP_NONE)			 \
      return -1;						 \
  }

/* Set header made of string to handle pref structure */
#define NHP_SET_HEADER_STR(nhp, name, v)			 \
  if ((v) != 0) {						 \
    char const *_value = (char const *)(v);			 \
    sip_##name##_t *_new = NULL;				 \
    if (_value != SIP_NONE)					 \
      _new = sip_##name##_make(home, _value);			 \
    if (NHP_ISSET(nhp, name))					 \
      msg_header_free_all(home, (void *)nhp->nhp_##name);	 \
    NHP_SET(nhp, name, _new);					 \
    if (_new == NULL && _value != SIP_NONE)			 \
      return -1;						 \
  }

/* Set copy of string from header to handle pref structure */
#define NHP_SET_STR_BY_HEADER(nhp, name, v)			 \
  if ((v) != 0) {					 \
    sip_##name##_t const *_value = (sip_##name##_t const *)(v);	 \
    char *_new = NULL;						 \
    if (_value != SIP_NONE)					 \
      _new = sip_header_as_string(home, (void *)_value);	 \
    if (NHP_ISSET(nhp, name))					 \
      su_free(home, (void *)nhp->nhp_##name);			 \
    NHP_SET(nhp, name, _new);					 \
    if (_new == NULL && _value != SIP_NONE)			 \
      return -1;						 \
  }


  tagi_t const *t;
679 680

  for (t = tags; t; t = tl_next(t)) {
681 682 683 684
    tag_type_t tag = t->t_tag;
    tag_value_t value = t->t_value;

    if (tag == NULL)
685 686
      break;
    /* NUTAG_RETRY_COUNT(retry_count) */
687 688
    else if (tag == nutag_retry_count) {
      NHP_SET(nhp, retry_count, (unsigned)value);
689 690
    }
    /* NUTAG_MAX_SUBSCRIPTIONS(max_subscriptions) */
691 692 693 694 695 696 697 698 699 700
    else if (tag == nutag_max_subscriptions) {
      NHP_SET(nhp, max_subscriptions, (unsigned)value);
    }
    /* NUTAG_SOA_NAME(soa_name) */
    else if (tag == nutag_soa_name) {
      NHP_SET_STR(nhp, soa_name, value);
    }
    /* NUTAG_MEDIA_ENABLE(media_enable) */
    else if (tag == nutag_media_enable) {
      NHP_SET(nhp, media_enable, value != 0);
701 702
    }
    /* NUTAG_ENABLEINVITE(invite_enable) */
703 704
    else if (tag == nutag_enableinvite) {
      NHP_SET(nhp, invite_enable, value != 0);
705 706
    }
    /* NUTAG_AUTOALERT(auto_alert) */
707 708
    else if (tag == nutag_autoalert) {
      NHP_SET(nhp, auto_alert, value != 0);
709
    }
710 711 712 713
    /* NUTAG_EARLY_ANSWER(early_answer) */
    else if (tag == nutag_early_answer) {
      NHP_SET(nhp, early_answer, value != 0);
    }
714
    /* NUTAG_EARLY_MEDIA(early_media) */
715 716
    else if (tag == nutag_early_media) {
      NHP_SET(nhp, early_media, value != 0);
717
    }
718
    /* NUTAG_ONLY183_100REL(only183_100rel) */
719 720
    else if (tag == nutag_only183_100rel) {
      NHP_SET(nhp, only183_100rel, value != 0);
721
    }
722
    /* NUTAG_AUTOANSWER(auto_answer) */
723 724
    else if (tag == nutag_autoanswer) {
      NHP_SET(nhp, auto_answer, value != 0);
725 726
    }
    /* NUTAG_AUTOACK(auto_ack) */
727 728
    else if (tag == nutag_autoack) {
      NHP_SET(nhp, auto_ack, value != 0);
729 730
    }
    /* NUTAG_INVITE_TIMER(invite_timeout) */
731 732
    else if (tag == nutag_invite_timer) {
      NHP_SET(nhp, invite_timeout, (unsigned)value);
733 734
    }
    /* NUTAG_SESSION_TIMER(session_timer) */
735 736
    else if (tag == nutag_session_timer) {
      NHP_SET(nhp, session_timer, (unsigned)value);
737 738
    }
    /* NUTAG_MIN_SE(min_se) */
739 740
    else if (tag == nutag_min_se) {
      NHP_SET(nhp, min_se, (unsigned)value);
741 742
    }
    /* NUTAG_SESSION_REFRESHER(refresher) */
743 744 745 746 747 748 749 750 751
    else if (tag == nutag_session_refresher) {
      int refresher = value;

      if (refresher >= nua_remote_refresher)
	refresher = nua_remote_refresher;
      else if (refresher <= nua_no_refresher)
	refresher = nua_no_refresher;

      NHP_SET(nhp, refresher, refresher);
752 753
    }
    /* NUTAG_UPDATE_REFRESH(update_refresh) */
754 755
    else if (tag == nutag_update_refresh) {
      NHP_SET(nhp, update_refresh, value != 0);
756 757
    }
    /* NUTAG_ENABLEMESSAGE(message_enable) */
758 759
    else if (tag == nutag_enablemessage) {
      NHP_SET(nhp, message_enable, value != 0);
760 761
    }
    /* NUTAG_ENABLEMESSENGER(win_messenger_enable) */
762 763
    else if (tag == nutag_enablemessenger) {
      NHP_SET(nhp, win_messenger_enable, value != 0);
764 765
    }
#if 0
766 767 768
    /* NUTAG_AUTORESPOND(autorespond) */
    else if (tag == nutag_autorespond) {
      NHP_SET(nhp, autorespond, value);
769 770 771
    }
#endif
    /* NUTAG_CALLEE_CAPS(callee_caps) */
772 773
    else if (tag == nutag_callee_caps) {
      NHP_SET(nhp, callee_caps, value != 0);
774 775
    }
    /* NUTAG_MEDIA_FEATURES(media_features) */
776 777
    else if (tag == nutag_media_features) {
      NHP_SET(nhp, media_features, value != 0);
778 779
    }
    /* NUTAG_SERVICE_ROUTE_ENABLE(service_route_enable) */
780 781
    else if (tag == nutag_service_route_enable) {
      NHP_SET(nhp, service_route_enable, value != 0);
782 783
    }
    /* NUTAG_PATH_ENABLE(path_enable) */
784 785
    else if (tag == nutag_path_enable) {
      NHP_SET(nhp, path_enable, value != 0);
786
    }
787
    /* NUTAG_REFER_EXPIRES(refer_expires) */
788 789
    else if (tag == nutag_refer_expires) {
      NHP_SET(nhp, refer_expires, value);
790 791
    }
    /* NUTAG_REFER_WITH_ID(refer_with_id) */
792 793
    else if (tag == nutag_refer_with_id) {
      NHP_SET(nhp, refer_with_id, value != 0);
794
    }
795
    /* NUTAG_SUBSTATE(substate) */
796 797
    else if (tag == nutag_substate) {
      NHP_SET(nhp, substate, (int)value);
798 799
    }
    /* NUTAG_KEEPALIVE(keepalive) */
800 801
    else if (tag == nutag_keepalive) {
      NHP_SET(nhp, keepalive, (unsigned)value);
802 803
    }
    /* NUTAG_KEEPALIVE_STREAM(keepalive_stream) */
804 805
    else if (tag == nutag_keepalive_stream) {
      NHP_SET(nhp, keepalive_stream, (unsigned)value);
806 807
    }

808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826
    /* NUTAG_SUPPORTED(feature) */
    /* SIPTAG_SUPPORTED_STR(supported_str) */
    /* SIPTAG_SUPPORTED(supported) */
    else if (tag == nutag_supported ||
	     tag == siptag_supported || 
	     tag == siptag_supported_str) {
      int ok;
      sip_supported_t *supported = NULL;

      ok = nhp_merge_lists(home, 
			   sip_supported_class, &supported, nhp->nhp_supported,
			   NHP_ISSET(nhp, supported), /* already set by tags */
			   tag == siptag_supported, /* dup it, don't make */
			   tag == nutag_supported, /* merge with old value */
			   t->t_value);
      if (ok < 0)
	return -1;
      else if (ok)
	NHP_SET(nhp, supported, supported);
827
    }
828 829 830 831 832 833 834
    /* NUTAG_ALLOW(allowing) */
    /* SIPTAG_ALLOW_STR(allow_str) */
    /* SIPTAG_ALLOW(allow) */
    else if (tag == nutag_allow ||
	     tag == siptag_allow_str ||
	     tag == siptag_allow) {
      int ok;
835
      msg_list_t *allow = NULL;
836 837

      ok = nhp_merge_lists(home, 
838
			   sip_allow_class,
839
			   &allow,
840
			   (msg_list_t const *)nhp->nhp_allow,
841 842 843 844 845 846 847
			   NHP_ISSET(nhp, allow), /* already set by tags */
			   tag == siptag_allow, /* dup it, don't make */
			   tag == nutag_allow, /* merge with old value */
			   t->t_value);
      if (ok < 0)
	return -1;
      else if (ok)
848
	NHP_SET(nhp, allow, (sip_allow_t *)allow);
849
    }
850 851 852 853 854 855 856 857 858 859
    /* NUTAG_ALLOW_EVENTS(allow_events) */
    /* SIPTAG_ALLOW_EVENTS_STR(allow_events) */
    /* SIPTAG_ALLOW_EVENTS(allow_events) */
    else if (tag == nutag_allow_events ||
	     tag == siptag_allow_events_str ||
	     tag == siptag_allow_events) {
      int ok;
      sip_allow_events_t *allow_events = NULL;

      ok = nhp_merge_lists(home, 
860 861
			   sip_allow_events_class,
			   &allow_events, 
862 863 864 865 866 867 868 869 870 871
			   nhp->nhp_allow_events,
			   NHP_ISSET(nhp, allow_events), /* already set */
			   tag == siptag_allow_events, /* dup it, don't make */
			   tag == nutag_allow_events, /* merge with old value */
			   t->t_value);
      if (ok < 0)
	return -1;
      else if (ok)
	NHP_SET(nhp, allow_events, allow_events);
    }
872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894
    /* NUTAG_APPL_METHOD(appl_method) */
    else if (tag == nutag_appl_method) {
      if (t->t_value == 0) {
	NHP_SET(nhp, appl_method, NULL);
      }
      else {
	int ok;
	msg_list_t *appl_method = NULL;

	ok = nhp_merge_lists(home,
			     sip_allow_class,
			     &appl_method,
			     (msg_list_t const *)nhp->nhp_appl_method,
			     NHP_ISSET(nhp, allow), /* already set by tags */
			     0, /* dup it, don't make */
			     1, /* merge with old value */
			     t->t_value);
	if (ok < 0)
	  return -1;
	else if (ok)
	  NHP_SET(nhp, appl_method, (sip_allow_t *)appl_method);
      }
    }
895 896 897
    /* SIPTAG_USER_AGENT(user_agent) */
    else if (tag == siptag_user_agent) {
      NHP_SET_STR_BY_HEADER(nhp, user_agent, value);
898
    }
899 900 901 902 903
    /* SIPTAG_USER_AGENT_STR(user_agent_str) */
    else if (tag == siptag_user_agent_str && value != 0) {
      if (value == -1)
	value = 0;
      NHP_SET_STR(nhp, user_agent, value);
904
    }
905 906 907
    /* NUTAG_USER_AGENT(ua_name) */
    else if (tag == nutag_user_agent) {
      /* Add contents of NUTAG_USER_AGENT() to our distribution name */
908
      char const *str = (void *)value, *ua;
909

910 911 912 913
      if (str && !already_contains_package_name(str))
	ua = su_sprintf(home, "%s %s", str, NHP_USER_AGENT);
      else if (str)
	ua = su_strdup(home, str);
914 915 916 917
      else
	ua = su_strdup(home, NHP_USER_AGENT);

      NHP_SET(nhp, user_agent, ua);
918
    }
919 920 921
    /* SIPTAG_ORGANIZATION(organization) */
    else if (tag == siptag_organization) {
      NHP_SET_STR_BY_HEADER(nhp, organization, value);
922
    }
923 924 925 926 927
    /* SIPTAG_ORGANIZATION_STR(organization_str) */
    else if (tag == siptag_organization_str) {
      if (value == -1)
	value = 0;
      NHP_SET_STR(nhp, organization, value);
928
    }
929 930 931 932 933
    /* NUTAG_REGISTRAR(registrar) */
    else if (tag == nutag_registrar) {
      NHP_SET_STR_BY_URL(nhp, registrar, value);
      if (NHP_ISSET(nhp, registrar) && !str0cmp(nhp->nhp_registrar, "*"))
	NHP_SET_STR(nhp, registrar, 0);
934
    }
935 936 937
    /* NUTAG_INSTANCE(instance) */
    else if (tag == nutag_instance) {
      NHP_SET_STR(nhp, instance, value);
938
    }
939 940 941
    /* NUTAG_M_DISPLAY(m_display) */
    else if (tag == nutag_m_display) {
      NHP_SET_STR(nhp, m_display, value);
942
    }
943 944 945
    /* NUTAG_M_USERNAME(m_username) */
    else if (tag == nutag_m_username) {
      NHP_SET_STR(nhp, m_username, value);
946
    }
947 948 949
    /* NUTAG_M_PARAMS(m_params) */
    else if (tag == nutag_m_params) {
      NHP_SET_STR(nhp, m_params, value);
950
    }
951 952 953
    /* NUTAG_M_FEATURES(m_features) */
    else if (tag == nutag_m_features) {
      NHP_SET_STR(nhp, m_features, value);
954
    }
955 956 957
    /* NUTAG_OUTBOUND(outbound) */
    else if (tag == nutag_outbound) {
      NHP_SET_STR(nhp, outbound, value);
958
    }
959 960 961 962 963 964 965 966 967 968
    /* NUTAG_DETECT_NETWORK_UPDATES(detect_network_updates) */
    else if (global && tag == nutag_detect_network_updates) {
      int detector = (int)value;

      if (detector < NUA_NW_DETECT_NOTHING)
	detector = NUA_NW_DETECT_NOTHING;
      else if (detector > NUA_NW_DETECT_TRY_FULL)
	detector = NUA_NW_DETECT_TRY_FULL;

      NHP_SET(nhp, detect_network_updates, detector);
969
    }
970 971
  }

972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989
  return 0;
}

/** Merge (when needed) new values with old values. */
static int nhp_merge_lists(su_home_t *home,
			   msg_hclass_t *hc,
			   msg_list_t **return_new_list,
			   msg_list_t const *old_list,
			   int already_set,
			   int already_parsed,
			   int always_merge,
			   tag_value_t value)
{
  msg_list_t *list, *elems;

  if (value == -1) {
    *return_new_list = NULL;
    return 1;
990 991
  }

992 993 994 995 996 997
  if (value == 0) {
    if (!already_set && !always_merge) {
      *return_new_list = NULL;
      return 1;
    }
    return 0;
998 999
  }

1000 1001 1002 1003
  if (already_parsed) 
    elems = (void *)msg_header_dup_as(home, hc, (msg_header_t *)value);
  else
    elems = (void *)msg_header_make(home, hc, (char const *)value);
1004

1005 1006 1007 1008
  if (!elems)
    return -1;

  list = (msg_list_t *)old_list;
1009

1010 1011 1012 1013 1014 1015 1016 1017 1018
  if (!already_set) {
    if (always_merge && list) {
      list = (void *)msg_header_dup_as(home, hc, (void *)old_list);
      if (!list)
	return -1;
    }
    else
      list = NULL;
  }
1019

1020 1021 1022
  if (!list) {
    *return_new_list = elems;
    return 1;
1023 1024
  }

1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041
  /* Add contents to the new list to the old list */
  if (msg_params_join(home, (msg_param_t **)&list->k_items, elems->k_items,
		      2 /* prune */, 0 /* don't dup */) < 0)
    return -1;
  
  *return_new_list = 
    (msg_list_t *)msg_header_dup_as(home, hc, (msg_header_t *)list);
  if (!*return_new_list)
    return -1;

  msg_header_free(home, (msg_header_t *)list);
  msg_header_free(home, (msg_header_t *)elems);

  return 1;
}

static
1042 1043 1044 1045
nua_handle_preferences_t *nhp_move_params(su_home_t *home,
					  nua_handle_preferences_t *dst,
					  su_home_t *tmphome,
					  nua_handle_preferences_t const *src)
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086
{
  /* Update prefs structure */
  nua_handle_preferences_t tbf[1];

  if (dst == NULL)
    dst = su_zalloc(home, sizeof *dst);
  if (dst == NULL)
    return NULL;
  if (su_home_move(home, tmphome) < 0)
    return NULL;

  *tbf = *dst;
  nhp_or_set(dst, src);

  /* Handle pointer items. Free changed ones and zap unset ones. */
#define NHP_ZAP_OVERRIDEN(tbf, nhp, pref)				\
  (((tbf)->nhp_set.nhb_##pref						\
    && (tbf)->nhp_##pref != (nhp)->nhp_##pref				\
    ? su_free(home, (void *)(tbf)->nhp_##pref) : (void)0),		\
   (void)(!(nhp)->nhp_set.nhb_##pref ? (nhp)->nhp_##pref = NULL : NULL))

  NHP_ZAP_OVERRIDEN(tbf, dst, soa_name);
  NHP_ZAP_OVERRIDEN(tbf, dst, registrar);
  NHP_ZAP_OVERRIDEN(tbf, dst, supported);
  NHP_ZAP_OVERRIDEN(tbf, dst, allow);
  NHP_ZAP_OVERRIDEN(tbf, dst, user_agent);
  NHP_ZAP_OVERRIDEN(tbf, dst, organization);
  NHP_ZAP_OVERRIDEN(tbf, dst, instance);
  NHP_ZAP_OVERRIDEN(tbf, dst, m_display);
  NHP_ZAP_OVERRIDEN(tbf, dst, m_username);
  NHP_ZAP_OVERRIDEN(tbf, dst, m_params);
  NHP_ZAP_OVERRIDEN(tbf, dst, m_features);
  NHP_ZAP_OVERRIDEN(tbf, dst, outbound);

  return dst;
}

static int nua_handle_tags_filter(tagi_t const *f, tagi_t const *t);
static int nua_handle_param_filter(tagi_t const *f, tagi_t const *t);

/** Save taglist to a handle */
1087
int nua_handle_save_tags(nua_handle_t *nh, tagi_t *tags)
1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
{
  tagi_t const tagfilter[] = {
    { TAG_FILTER(nua_handle_tags_filter) },
    { TAG_NULL() }
  };
  tagi_t const paramfilter[] = {
    { TAG_FILTER(nua_handle_param_filter) },
    { TAG_NULL() }
  };

  /* Initialization parameters */
  url_string_t const *url = NULL;
  sip_to_t const *p_to = NULL;
  char const *to_str = NULL;
  sip_from_t from[1];
  sip_from_t const *p_from = NULL;
  char const *from_str = NULL;
  nua_handle_t *identity = NULL;

  tagi_t const *t;

  su_home_t tmphome[SU_HOME_AUTO_SIZE(1024)];

  int error;

  for (t = tags; t; t = tl_next(t)) {
    if (t->t_tag == NULL)
      break;
    /* SIPTAG_FROM_REF(p_from) */
    else if (t->t_tag == siptag_from) {
      p_from = (sip_from_t *)t->t_value, from_str = NULL;
    }
    /* SIPTAG_FROM_STR_REF(from_str) */
    else if (t->t_tag == siptag_from_str) {
      from_str = (char const *)t->t_value, p_from = NULL;
    }
    /* SIPTAG_TO_REF(p_to) */
    else if (t->t_tag == siptag_to) {
      p_to = (sip_to_t *)t->t_value, to_str = NULL;
    }
    /* SIPTAG_TO_STR_REF(to_str) */
    else if (t->t_tag == siptag_to_str) {
      to_str = (char const *)t->t_value, p_to = NULL;
    }
    /* NUTAG_IDENTITY_REF(identity) */
    else if (t->t_tag == nutag_identity) {
      identity = (nua_handle_t *)t->t_value;
    }
    /* NUTAG_URL_REF(url) */
    else if (t->t_tag == nutag_url) {
      url = (url_string_t *)t->t_value;
    }
    /* NUTAG_SIPS_URL_REF(url) */
    else if (t->t_tag == nutag_url) {
      url = (url_string_t *)t->t_value;
1143 1144 1145
    }
  }

1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160
  su_home_auto(tmphome, sizeof tmphome);

  if (p_from)
    ;
  else if (from_str)
    p_from = sip_from_make(tmphome, from_str);
  else if (!p_from && nh->nh_nua->nua_from)
    *from = *nh->nh_nua->nua_from, from->a_params = NULL, p_from = from;
  else
    p_from = SIP_NONE;    /* XXX - why? */

  if (p_to)
    ;
  else if (to_str)
    p_to = sip_to_make(tmphome, to_str);
1161 1162 1163
  else if (url)
    p_to = sip_to_create(tmphome, url), 
      p_to ? sip_aor_strip((url_t*)p_to->a_url) : 0;
1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
  else
    p_to = SIP_NONE;
  
  if (p_to == NULL || p_from == NULL) {
    su_home_deinit(tmphome);
    return -1;
  }

  nh->nh_tags = 
    tl_filtered_tlist(nh->nh_home, tagfilter,
		      SIPTAG_FROM(p_from),
		      TAG_FILTER(nua_handle_tags_filter),
		      SIPTAG_TO(p_to),
		      TAG_FILTER(nua_handle_tags_filter),
		      TAG_NEXT(tags));

  nh->nh_ptags = 
    tl_filtered_tlist(nh->nh_home, paramfilter, TAG_NEXT(tags));

  error = nh->nh_tags == NULL || nh->nh_ptags == NULL;

  if (!error)
    tl_gets(nh->nh_tags,	/* These does not change while nh lives */
	    SIPTAG_FROM_REF(nh->nh_ds->ds_local),
	    SIPTAG_TO_REF(nh->nh_ds->ds_remote),
	    TAG_END());

  if (nh->nh_ptags && nh->nh_ptags->t_tag == NULL)
    su_free(nh->nh_home, nh->nh_ptags), nh->nh_ptags = NULL;
    
  if (identity)
    nh->nh_identity = nua_handle_ref(identity);

1197 1198
  su_home_deinit(tmphome);

1199 1200 1201 1202 1203 1204 1205
  return -error;
}

/** Filter tags used for settings. */
static int nua_handle_param_filter(tagi_t const *f, tagi_t const *t)
{
  char const *ns;
1206

1207 1208
  if (!t || !t->t_tag)
    return 0;
1209

1210 1211 1212 1213 1214 1215 1216 1217
  if (t->t_tag == nutag_url || 
      t->t_tag == nutag_sips_url ||
      t->t_tag == nutag_identity)
    return 0;

  ns = t->t_tag->tt_ns; 
  if (!ns)
    return 0;
1218

1219
  return strcmp(ns, "nua") == 0 || strcmp(ns, "soa") == 0;
1220
}
1221

1222 1223 1224 1225
/** Filter tags stored permanently as taglist. */
static int nua_handle_tags_filter(tagi_t const *f, tagi_t const *t)
{
  tag_type_t tag;
1226

1227 1228
  if (!t || !t->t_tag)
    return 0;
1229

1230
  tag = t->t_tag;
1231

1232 1233 1234 1235 1236 1237 1238 1239 1240 1241
  if (tag == tag_filter)
    return 0;
  
  /* Accept @From or @To only when they are followed by
     TAG_FILTER(nua_handle_tags_filter) */
  if (tag == siptag_from || tag == siptag_to) {
    t = tl_next(t);
    return t && t->t_tag == tag_filter && 
      t->t_value == (tag_value_t)nua_handle_tags_filter;
  }
1242

1243 1244 1245 1246 1247 1248
  if (tag == nutag_identity)
    return 0;
  if (tag == siptag_from_str)
    return 0;
  if (tag == siptag_to_str)
    return 0;
1249

1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260
  /** Ignore @CSeq, @RSeq, @RAck, @Timestamp, and @ContentLength */
  if (tag == siptag_cseq || tag == siptag_cseq_str)
    return 0;
  if (tag == siptag_rseq || tag == siptag_rseq_str)
    return 0;
  if (tag == siptag_rack || tag == siptag_rack_str)
    return 0;
  if (tag == siptag_timestamp || tag == siptag_timestamp_str)
    return 0;
  if (tag == siptag_content_length || tag == siptag_content_length_str)
    return 0;
1261

1262
  return ! nua_handle_param_filter(f, t);
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302
}

static
int nua_stack_set_smime_params(nua_t *nua, tagi_t const *tags)
{
#if HAVE_SOFIA_SMIME
  int           smime_enable = nua->sm->sm_enable;
  int           smime_opt = nua->sm->sm_opt;
  int           smime_protection_mode = nua->sm->sm_protection_mode;
  char const   *smime_message_digest = NONE;
  char const   *smime_signature = NONE;
  char const   *smime_key_encryption = NONE;
  char const   *smime_message_encryption = NONE;
  char const   *smime_path = NONE;

  int n;

  n = tl_gets(tags,
	      NUTAG_SMIME_ENABLE_REF(smime_enable),
	      NUTAG_SMIME_OPT_REF(smime_opt),
	      NUTAG_SMIME_PROTECTION_MODE_REF(smime_protection_mode),
	      NUTAG_SMIME_MESSAGE_DIGEST_REF(smime_message_digest),
	      NUTAG_SMIME_SIGNATURE_REF(smime_signature),
	      NUTAG_SMIME_KEY_ENCRYPTION_REF(smime_key_encryption),
	      NUTAG_SMIME_MESSAGE_ENCRYPTION_REF(smime_message_encryption),
	      NUTAG_CERTIFICATE_DIR_REF(smime_path),
	      TAG_NULL());
  if (n <= 0)
    return n;

  /* XXX - all other S/MIME parameters? */
  return sm_set_params(nua->sm, smime_enable, smime_opt, 
		       smime_protection_mode, smime_path);
#endif

  return 0;
}

/**@fn void nua_get_params(nua_t *nua, tag_type_t tag, tag_value_t value, ...)
 *
1303 1304
 * Get NUA parameters matching with the given filter.
 * The values of NUA parameters is returned in #nua_r_get_params event.
1305 1306 1307 1308 1309 1310 1311 1312
 *
 * @param nua             Pointer to NUA stack object
 * @param tag, value, ... List of tagged parameters
 *
 * @return
 *     nothing
 *
 * @par Related tags:
1313 1314
 *     TAG_ANY() \n
 *     otherwise same tags as nua_set_params()
1315 1316 1317
 *
 * @par Events:
 *     #nua_r_get_params
1318 1319 1320 1321 1322 1323
 *
 * @par Examples
 * Find out default values of all parameters:
 * @code
 *    nua_get_params(nua, TAG_ANY(), TAG_END());
 * @endcode
1324 1325 1326 1327
 */

/**@fn void nua_get_hparams(nua_handle_t *nh, tag_type_t tag, tag_value_t value, ...)
 * 
1328
 * Get values of handle-specific parameters in #nua_r_get_params event.
1329 1330 1331
 *
 * Application will specify either expilicit list of tags it is interested
 * in, or a filter (at the moment, TAG_ANY()). The values are returned as a
1332
 * list of tags in the #nua_r_get_params event.
1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353
 *
 * @param nh              Pointer to operation handle
 * @param tag, value, ... List of tagged parameters
 *
 * The handle-specific parameters will contain only the parameters actually
 * modified by application, either by nua_set_hparams() or some other
 * handle-specific call. Currently, no NTA parameters are returned. They are
 * returned only when application asks for user-agent-level parameters using
 * either nua_get_params() or using default handle, eg.
 * @code
 * nua_get_hparams(nua_default(nua), TAG_ANY())
 * @endcode
 *
 * @return
 *     nothing
 *
 * @par Related tags:
 *     #TAG_ANY \n
 *     othervise same tags as nua_set_hparams()
 *
 * @par Events:
1354
 *     #nua_r_get_params
1355 1356
 */

1357
/** @NUA_EVENT nua_r_get_params
1358 1359 1360
 *
 * Answer to nua_get_params() or nua_get_hparams().
 *
1361 1362 1363 1364 1365 1366 1367
 * @param status 200 when succesful, error code otherwise
 * @param phrase a short textual description of @a status code
 * @param nh     NULL when responding to nua_get_params(),
 *               operation handle when responding to nua_get_hparams()
 * @param hmagic NULL when responding to nua_get_params(),
 *               application contact associated with the operation handle 
 *               when responding to nua_get_hparams()
1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414
 * @param sip    NULL
 * @param tags   
 *   NUTAG_AUTOACK() \n
 *   NUTAG_AUTOALERT() \n
 *   NUTAG_AUTOANSWER() \n
 *   NUTAG_CALLEE_CAPS() \n
 *   NUTAG_DETECT_NETWORK_UPDATES() \n
 *   NUTAG_EARLY_ANSWER() \n
 *   NUTAG_EARLY_MEDIA() \n
 *   NUTAG_ENABLEINVITE() \n
 *   NUTAG_ENABLEMESSAGE() \n
 *   NUTAG_ENABLEMESSENGER() \n
 *   NUTAG_INSTANCE() \n
 *   NUTAG_INVITE_TIMER() \n
 *   NUTAG_KEEPALIVE() \n
 *   NUTAG_KEEPALIVE_STREAM() \n
 *   NUTAG_MAX_SUBSCRIPTIONS() \n
 *   NUTAG_MEDIA_ENABLE() \n
 *   NUTAG_MEDIA_FEATURES() \n
 *   NUTAG_MIN_SE() \n
 *   NUTAG_M_DISPLAY() \n
 *   NUTAG_M_FEATURES() \n
 *   NUTAG_M_PARAMS() \n
 *   NUTAG_M_USERNAME() \n
 *   NUTAG_ONLY183_100REL() \n
 *   NUTAG_OUTBOUND() \n
 *   NUTAG_PATH_ENABLE() \n
 *   NUTAG_REFER_EXPIRES() \n
 *   NUTAG_REFER_WITH_ID() \n
 *   NUTAG_REGISTRAR() \n
 *   NUTAG_RETRY_COUNT() \n
 *   NUTAG_SERVICE_ROUTE_ENABLE() \n
 *   NUTAG_SESSION_REFRESHER() \n
 *   NUTAG_SESSION_TIMER() \n
 *   NUTAG_SMIME_ENABLE() \n
 *   NUTAG_SMIME_KEY_ENCRYPTION() \n
 *   NUTAG_SMIME_MESSAGE_DIGEST() \n
 *   NUTAG_SMIME_MESSAGE_ENCRYPTION() \n
 *   NUTAG_SMIME_OPT() \n
 *   NUTAG_SMIME_PROTECTION_MODE() \n
 *   NUTAG_SMIME_SIGNATURE() \n
 *   NUTAG_SOA_NAME() \n
 *   NUTAG_SUBSTATE() \n
 *   NUTAG_UPDATE_REFRESH() \n
 *   NUTAG_USER_AGENT() \n
 *   SIPTAG_ALLOW() \n
 *   SIPTAG_ALLOW_STR() \n
1415 1416
 *   SIPTAG_ALLOW_EVENTS() \n
 *   SIPTAG_ALLOW_EVENTS_STR() \n
1417 1418 1419 1420 1421 1422 1423 1424
 *   SIPTAG_FROM() \n
 *   SIPTAG_FROM_STR() \n
 *   SIPTAG_ORGANIZATION() \n
 *   SIPTAG_ORGANIZATION_STR() \n
 *   SIPTAG_SUPPORTED() \n
 *   SIPTAG_SUPPORTED_STR() \n
 *   SIPTAG_USER_AGENT() \n
 *   SIPTAG_USER_AGENT_STR() \n
1425 1426 1427 1428 1429
 *
 * @sa nua_get_params(), nua_get_hparams(),
 * nua_set_params(), nua_set_hparams(), #nua_r_set_params
 *
 * @END_NUA_EVENT
1430 1431
 */

1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460
/**@internal
 * Send a list of NUA parameters to the application.
 *
 * This function gets invoked when application calls either nua_get_params()
 * or nua_get_hparams().
 *
 * The parameter tag list will initially contain all the relevant parameter
 * tags, and it will be filtered down to parameters asked by application.
 *
 * The handle-specific parameters will contain only the parameters actually
 * modified by application, either by nua_set_hparams() or some other
 * handle-specific call. NTA parameters are returned only when application
 * asks for user-agent-level parameters using nua_get_params().
 *
 */
int nua_stack_get_params(nua_t *nua, nua_handle_t *nh, nua_event_t e,
			 tagi_t const *tags)
{
  nua_handle_t *dnh = nua->nua_dhandle;
  nua_handle_preferences_t const *nhp = nh->nh_prefs;

  tagi_t *lst;

  int has_from;
  sip_from_t from[1];

  sip_contact_t const *m;

  /* nta */
1461 1462
  usize_t udp_mtu = 0;
  unsigned sip_t1 = 0, sip_t2 = 0, sip_t4 = 0, sip_t1x64 = 0;
1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495
  unsigned debug_drop_prob = 0;
  url_string_t const *proxy = NULL;
  sip_contact_t const *aliases = NULL;
  unsigned flags = 0;

  /* soa */
  tagi_t *media_params = NULL;

  su_home_t tmphome[SU_HOME_AUTO_SIZE(16536)];

  enter;

  su_home_auto(tmphome, sizeof(tmphome));

  nta_agent_get_params(nua->nua_nta,
		       NTATAG_UDP_MTU_REF(udp_mtu),
		       NTATAG_SIP_T1_REF(sip_t1),
		       NTATAG_SIP_T2_REF(sip_t2),
		       NTATAG_SIP_T4_REF(sip_t4),
		       NTATAG_SIP_T1X64_REF(sip_t1x64),
		       NTATAG_DEBUG_DROP_PROB_REF(debug_drop_prob),
		       NTATAG_DEFAULT_PROXY_REF(proxy),
		       NTATAG_ALIASES_REF(aliases),
		       NTATAG_SIPFLAGS_REF(flags),
		       TAG_END());

  if (nh->nh_ds->ds_local)
    has_from = 1, *from = *nh->nh_ds->ds_local, from->a_params = NULL;
  else
    has_from = 0;

  media_params = soa_get_paramlist(nh->nh_soa, TAG_END());

1496
  m = nua_stack_get_contact(nua->nua_registrations);
1497

1498
  /* Include tag in the list returned to user
1499 1500
   * if it has been earlier set (by user) */
#define TIF(TAG, pref) \
1501
  TAG_IF(nhp->nhp_set.nhb_##pref, TAG(nhp->nhp_##pref))
1502 1503 1504 1505

  /* Include string tag made out of SIP header
   * if it has been earlier set (by user) */
#define TIF_STR(TAG, pref)						\
1506 1507
  TAG_IF(nhp->nhp_set.nhb_##pref,				\
	 TAG(nhp->nhp_set.nhb_##pref && nhp->nhp_##pref	\
1508 1509
	     ? sip_header_as_string(tmphome, (void *)nhp->nhp_##pref) : NULL))

1510 1511 1512 1513 1514 1515 1516 1517
  /* Include header tag made out of string
   * if it has been earlier set (by user) */
#define TIF_SIP(TAG, pref)						\
  TAG_IF(nhp->nhp_set.nhb_##pref,					\
	 TAG(nhp->nhp_set.nhb_##pref && nhp->nhp_##pref			\
	     ? sip_##pref##_make(tmphome, (char *)nhp->nhp_##pref)	\
	     : NULL))

1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528
  lst = tl_filtered_tlist
    (tmphome, tags,
     TAG_IF(has_from, SIPTAG_FROM(from)),
     TAG_IF(has_from,
	    SIPTAG_FROM_STR(has_from
			    ? sip_header_as_string(tmphome, (void *)from)
			    : NULL)),

     TIF(NUTAG_RETRY_COUNT, retry_count),
     TIF(NUTAG_MAX_SUBSCRIPTIONS, max_subscriptions),

1529 1530
     TIF(NUTAG_SOA_NAME, soa_name),
     TIF(NUTAG_MEDIA_ENABLE, media_enable),
1531 1532
     TIF(NUTAG_ENABLEINVITE, invite_enable),
     TIF(NUTAG_AUTOALERT, auto_alert),
1533
     TIF(NUTAG_EARLY_ANSWER, early_answer),
1534
     TIF(NUTAG_EARLY_MEDIA, early_media),
1535
     TIF(NUTAG_ONLY183_100REL, only183_100rel),
1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546
     TIF(NUTAG_AUTOANSWER, auto_answer),
     TIF(NUTAG_AUTOACK, auto_ack),
     TIF(NUTAG_INVITE_TIMER, invite_timeout),

     TIF(NUTAG_SESSION_TIMER, session_timer),
     TIF(NUTAG_MIN_SE, min_se),
     TIF(NUTAG_SESSION_REFRESHER, refresher),
     TIF(NUTAG_UPDATE_REFRESH, update_refresh),

     TIF(NUTAG_ENABLEMESSAGE, message_enable),
     TIF(NUTAG_ENABLEMESSENGER, win_messenger_enable),
1547
     /* TIF(NUTAG_AUTORESPOND, autorespond), */
1548 1549 1550 1551 1552

     TIF(NUTAG_CALLEE_CAPS, callee_caps),
     TIF(NUTAG_MEDIA_FEATURES, media_features),
     TIF(NUTAG_SERVICE_ROUTE_ENABLE, service_route_enable),
     TIF(NUTAG_PATH_ENABLE, path_enable),
1553 1554
     TIF(NUTAG_REFER_EXPIRES, refer_expires),
     TIF(NUTAG_REFER_WITH_ID, refer_with_id),
1555 1556 1557 1558 1559 1560 1561

     TIF(NUTAG_SUBSTATE, substate),

     TIF(SIPTAG_SUPPORTED, supported),
     TIF_STR(SIPTAG_SUPPORTED_STR, supported),
     TIF(SIPTAG_ALLOW, allow),
     TIF_STR(SIPTAG_ALLOW_STR, allow),
1562 1563
     TIF(SIPTAG_ALLOW_EVENTS, allow_events),
     TIF_STR(SIPTAG_ALLOW_EVENTS_STR, allow_events),
1564 1565 1566
     TIF_SIP(SIPTAG_USER_AGENT, user_agent),
     TIF(SIPTAG_USER_AGENT_STR, user_agent),
     TIF(NUTAG_USER_AGENT, user_agent),
1567

1568 1569 1570 1571 1572 1573
     TIF_SIP(SIPTAG_ORGANIZATION, organization),
     TIF(SIPTAG_ORGANIZATION_STR, organization),

     TIF(NUTAG_REGISTRAR, registrar),
     TIF(NUTAG_KEEPALIVE, keepalive),
     TIF(NUTAG_KEEPALIVE_STREAM, keepalive_stream),
1574

1575 1576 1577 1578 1579
     TIF(NUTAG_INSTANCE, instance),
     TIF(NUTAG_M_DISPLAY, m_display),
     TIF(NUTAG_M_USERNAME, m_username),
     TIF(NUTAG_M_PARAMS, m_params),
     TIF(NUTAG_M_FEATURES, m_features),
1580
     TIF(NUTAG_OUTBOUND, outbound),
1581
     TIF(NUTAG_DETECT_NETWORK_UPDATES, detect_network_updates),
1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617

     /* Skip user-agent-level parameters if parameters are for handle only */
     TAG_IF(nh != dnh, TAG_NEXT(media_params)),

     NTATAG_CONTACT(m),

#if HAVE_SOFIA_SMIME
     NUTAG_SMIME_ENABLE(nua->sm->sm_enable),
     NUTAG_SMIME_OPT(nua->sm->sm_opt),
     NUTAG_SMIME_PROTECTION_MODE(nua->sm->sm_protection_mode),
     NUTAG_SMIME_MESSAGE_DIGEST(nua->sm->sm_message_digest),
     NUTAG_SMIME_SIGNATURE(nua->sm->sm_signature),
     NUTAG_SMIME_KEY_ENCRYPTION(nua->sm->sm_key_encryption),
     NUTAG_SMIME_MESSAGE_ENCRYPTION(nua->sm->sm_message_encryption),
#endif

     NTATAG_UDP_MTU(udp_mtu),
     NTATAG_SIP_T1(sip_t1),
     NTATAG_SIP_T2(sip_t2),
     NTATAG_SIP_T4(sip_t4),
     NTATAG_SIP_T1X64(sip_t1x64),
     NTATAG_DEBUG_DROP_PROB(debug_drop_prob),
     NTATAG_DEFAULT_PROXY(proxy),
     NTATAG_ALIASES(aliases),
     NTATAG_SIPFLAGS(flags),

     TAG_NEXT(media_params));

  nua_stack_event(nua, nh, NULL, nua_r_get_params, SIP_200_OK, TAG_NEXT(lst));

  su_home_deinit(tmphome);

  tl_vfree(media_params);

  return 0;
}