config_system.c File Reference

#include "asterisk.h"
#include <pjsip.h>
#include <pjlib.h>
#include "asterisk/res_pjsip.h"
#include "asterisk/sorcery.h"
#include "include/res_pjsip_private.h"
#include "asterisk/threadpool.h"
#include "asterisk/dns.h"
#include "asterisk/res_pjsip_cli.h"

Include dependency graph for config_system.c:

Go to the source code of this file.

Data Structures
struct	system_config

Macros
#define	DEFAULT_TIMER_B   32000
#define	DEFAULT_TIMER_T1   500
#define	TIMER_T1_MIN   100

Functions
void	ast_sip_destroy_system (void)
void	ast_sip_initialize_dns (void)
int	ast_sip_initialize_system (void)
static struct system_config *	get_system_cfg (void)
int	sip_cli_print_system (struct ast_sip_cli_context *context)
void	sip_get_threadpool_options (struct ast_threadpool_options *threadpool_options)
static void *	system_alloc (const char *name)
static int	system_apply (const struct ast_sorcery *sorcery, void *obj)
static int	system_create_resolver_and_set_nameservers (void *data)

Variables
static struct ast_threadpool_options	sip_threadpool_options
static struct ast_sorcery *	system_sorcery

Macro Definition Documentation

DEFAULT_TIMER_B

#define DEFAULT_TIMER_B   32000

Definition at line 33 of file config_system.c.

DEFAULT_TIMER_T1

#define DEFAULT_TIMER_T1   500

Definition at line 32 of file config_system.c.

TIMER_T1_MIN

#define TIMER_T1_MIN   100

Definition at line 31 of file config_system.c.

Function Documentation

ast_sip_destroy_system()

void ast_sip_destroy_system

(

void

)

Definition at line 245 of file config_system.c.

{
    ast_sorcery_unref(system_sorcery);
}

References ast_sorcery_unref, and system_sorcery.

Referenced by unload_pjsip().

ast_sip_initialize_dns()

void ast_sip_initialize_dns

(

void

)

Definition at line 314 of file config_system.c.

{
    ast_sip_push_task_wait_servant(NULL, system_create_resolver_and_set_nameservers, NULL);
}

References ast_sip_push_task_wait_servant(), NULL, and system_create_resolver_and_set_nameservers().

Referenced by load_module(), and reload_configuration_task().

ast_sip_initialize_system()

int ast_sip_initialize_system

(

void

)

Definition at line 175 of file config_system.c.

{
    RAII_VAR(struct ao2_container *, system_configs, NULL, ao2_cleanup);
    RAII_VAR(struct system_config *, system, NULL, ao2_cleanup);
 
    system_sorcery = ast_sorcery_open();
    if (!system_sorcery) {
        ast_log(LOG_ERROR, "Failed to open SIP system sorcery\n");
        return -1;
    }
 
    ast_sorcery_apply_default(system_sorcery, "system", "config", "pjsip.conf,criteria=type=system,single_object=yes,explicit_name=system");
 
    if (ast_sorcery_object_register_no_reload(system_sorcery, "system", system_alloc, NULL, system_apply)) {
        ast_log(LOG_ERROR, "Failed to register with sorcery (is res_sorcery_config loaded?)\n");
        ast_sorcery_unref(system_sorcery);
        system_sorcery = NULL;
        return -1;
    }
 
    ast_sorcery_object_field_register(system_sorcery, "system", "type", "", OPT_NOOP_T, 0, 0);
    ast_sorcery_object_field_register(system_sorcery, "system", "timer_t1", __stringify(DEFAULT_TIMER_T1),
            OPT_UINT_T, 0, FLDSET(struct system_config, timert1));
    ast_sorcery_object_field_register(system_sorcery, "system", "timer_b", __stringify(DEFAULT_TIMER_B),
            OPT_UINT_T, 0, FLDSET(struct system_config, timerb));
    ast_sorcery_object_field_register(system_sorcery, "system", "compact_headers", "no",
            OPT_BOOL_T, 1, FLDSET(struct system_config, compactheaders));
    ast_sorcery_object_field_register(system_sorcery, "system", "threadpool_initial_size", "0",
            OPT_UINT_T, 0, FLDSET(struct system_config, threadpool.initial_size));
    ast_sorcery_object_field_register(system_sorcery, "system", "threadpool_auto_increment", "5",
            OPT_UINT_T, 0, FLDSET(struct system_config, threadpool.auto_increment));
    ast_sorcery_object_field_register(system_sorcery, "system", "threadpool_idle_timeout", "60",
            OPT_UINT_T, 0, FLDSET(struct system_config, threadpool.idle_timeout));
    ast_sorcery_object_field_register(system_sorcery, "system", "threadpool_max_size", "50",
            OPT_UINT_T, 0, FLDSET(struct system_config, threadpool.max_size));
    ast_sorcery_object_field_register(system_sorcery, "system", "disable_tcp_switch", "yes",
            OPT_BOOL_T, 1, FLDSET(struct system_config, disable_tcp_switch));
    ast_sorcery_object_field_register(system_sorcery, "system", "follow_early_media_fork", "yes",
            OPT_BOOL_T, 1, FLDSET(struct system_config, follow_early_media_fork));
    ast_sorcery_object_field_register(system_sorcery, "system", "accept_multiple_sdp_answers", "no",
            OPT_BOOL_T, 1, FLDSET(struct system_config, accept_multiple_sdp_answers));
    ast_sorcery_object_field_register(system_sorcery, "system", "disable_rport", "no",
            OPT_BOOL_T, 1, FLDSET(struct system_config, disable_rport));
 
    ast_sorcery_load(system_sorcery);
 
    system_configs = ast_sorcery_retrieve_by_fields(system_sorcery, "system",
        AST_RETRIEVE_FLAG_MULTIPLE | AST_RETRIEVE_FLAG_ALL, NULL);
 
    if (ao2_container_count(system_configs)) {
        return 0;
    }
 
    /* No config present, allocate one and apply defaults */
    system = ast_sorcery_alloc(system_sorcery, "system", NULL);
    if (!system) {
        ast_log(LOG_ERROR, "Unable to allocate default system config.\n");
        ast_sorcery_unref(system_sorcery);
        return -1;
    }
 
    if (system_apply(system_sorcery, system)) {
        ast_log(LOG_ERROR, "Failed to apply default system config.\n");
        ast_sorcery_unref(system_sorcery);
        return -1;
    }
 
    return 0;
}

References __stringify, system_config::accept_multiple_sdp_answers, ao2_cleanup, ao2_container_count(), ast_log, AST_RETRIEVE_FLAG_ALL, AST_RETRIEVE_FLAG_MULTIPLE, ast_sorcery_alloc(), ast_sorcery_apply_default, ast_sorcery_load(), ast_sorcery_object_field_register, ast_sorcery_object_register_no_reload, ast_sorcery_open, ast_sorcery_retrieve_by_fields(), ast_sorcery_unref, system_config::compactheaders, DEFAULT_TIMER_B, DEFAULT_TIMER_T1, system_config::disable_rport, system_config::disable_tcp_switch, FLDSET, system_config::follow_early_media_fork, LOG_ERROR, NULL, OPT_BOOL_T, OPT_NOOP_T, OPT_UINT_T, RAII_VAR, system_alloc(), system_apply(), system_sorcery, threadpool, system_config::timerb, and system_config::timert1.

Referenced by load_module().

get_system_cfg()

static struct system_config * get_system_cfg ( void  )

static

Definition at line 141 of file config_system.c.

{
    struct system_config *cfg;
    struct ao2_container *systems;
    systems = ast_sorcery_retrieve_by_fields(system_sorcery, "system",
        AST_RETRIEVE_FLAG_MULTIPLE | AST_RETRIEVE_FLAG_ALL, NULL);
 
    if (!systems) {
        return NULL;
    }
 
    cfg = ao2_find(systems, NULL, 0);
    ao2_ref(systems, -1);
    return cfg;
}

References ao2_find, ao2_ref, AST_RETRIEVE_FLAG_ALL, AST_RETRIEVE_FLAG_MULTIPLE, ast_sorcery_retrieve_by_fields(), NULL, and system_sorcery.

Referenced by sip_cli_print_system().

sip_cli_print_system()

int sip_cli_print_system

(

struct ast_sip_cli_context *

context

)

Definition at line 157 of file config_system.c.

{
    struct system_config *cfg = get_system_cfg();
 
    if (!cfg) {
        cfg = ast_sorcery_alloc(system_sorcery, "system", NULL);
        if (!cfg) {
            return -1;
        }
    }
 
    ast_str_append(&context->output_buffer, 0, "\nSystem Settings:\n\n");
    ast_sip_cli_print_sorcery_objectset(cfg, context, 0);
 
    ao2_ref(cfg, -1);
    return 0;
}

References ao2_ref, ast_sip_cli_print_sorcery_objectset(), ast_sorcery_alloc(), ast_str_append(), voicemailpwcheck::context, get_system_cfg(), NULL, and system_sorcery.

Referenced by cli_show_settings().

sip_get_threadpool_options()

void sip_get_threadpool_options

(

struct ast_threadpool_options *

threadpool_options

)

Definition at line 70 of file config_system.c.

{
    *threadpool_options = sip_threadpool_options;
}

References sip_threadpool_options, and threadpool_options.

Referenced by load_module().

system_alloc()

static void * system_alloc ( const char *  name )

static

Definition at line 77 of file config_system.c.

{
    struct system_config *system = ast_sorcery_generic_alloc(sizeof(*system), NULL);
 
    if (!system) {
        return NULL;
    }
 
    return system;
}

References ast_sorcery_generic_alloc(), and NULL.

Referenced by ast_sip_initialize_system().

system_apply()

static int system_apply ( const struct ast_sorcery *  sorcery, void *  obj  )

static

Definition at line 88 of file config_system.c.

{
    struct system_config *system = obj;
    int min_timerb;
 
    if (system->timert1 < TIMER_T1_MIN) {
        ast_log(LOG_WARNING, "Timer T1 setting is too low. Setting to %d\n", TIMER_T1_MIN);
        system->timert1 = TIMER_T1_MIN;
    }
 
    min_timerb = 64 * system->timert1;
 
    if (system->timerb < min_timerb) {
        ast_log(LOG_WARNING, "Timer B setting is too low. Setting to %d\n", min_timerb);
        system->timerb = min_timerb;
    }
 
    pjsip_cfg()->tsx.t1 = system->timert1;
    pjsip_cfg()->tsx.td = system->timerb;
 
    pjsip_cfg()->endpt.follow_early_media_fork = system->follow_early_media_fork;
#ifdef HAVE_PJSIP_INV_ACCEPT_MULTIPLE_SDP_ANSWERS
    pjsip_cfg()->endpt.accept_multiple_sdp_answers = system->accept_multiple_sdp_answers;
#else
    if (system->accept_multiple_sdp_answers) {
        ast_log(LOG_WARNING,
            "The accept_multiple_sdp_answers flag is not supported in this version of pjproject. Ignoring\n");
    }
#endif
 
    if (system->compactheaders) {
#ifdef HAVE_PJSIP_ENDPOINT_COMPACT_FORM
        pjsip_cfg()->endpt.use_compact_form = PJ_TRUE;
#else
        extern pj_bool_t pjsip_use_compact_form;
 
        pjsip_use_compact_form = PJ_TRUE;
#endif
    }
 
    sip_threadpool_options.initial_size = system->threadpool.initial_size;
    sip_threadpool_options.auto_increment = system->threadpool.auto_increment;
    sip_threadpool_options.idle_timeout = system->threadpool.idle_timeout;
    sip_threadpool_options.max_size = system->threadpool.max_size;
 
    pjsip_cfg()->endpt.disable_tcp_switch =
        system->disable_tcp_switch ? PJ_TRUE : PJ_FALSE;
 
    pjsip_cfg()->endpt.disable_rport = system->disable_rport ? PJ_TRUE : PJ_FALSE;
 
    return 0;
}

References system_config::accept_multiple_sdp_answers, ast_log, ast_threadpool_options::auto_increment, system_config::auto_increment, system_config::compactheaders, system_config::disable_rport, system_config::disable_tcp_switch, system_config::follow_early_media_fork, ast_threadpool_options::idle_timeout, system_config::idle_timeout, ast_threadpool_options::initial_size, system_config::initial_size, LOG_WARNING, ast_threadpool_options::max_size, system_config::max_size, sip_threadpool_options, system_config::threadpool, TIMER_T1_MIN, system_config::timerb, and system_config::timert1.

Referenced by ast_sip_initialize_system().

system_create_resolver_and_set_nameservers()

static int system_create_resolver_and_set_nameservers ( void *  data )

static

Definition at line 250 of file config_system.c.

{
    struct ao2_container *discovered_nameservers;
    struct ao2_iterator it_nameservers;
    char *nameserver;
    pj_status_t status;
    pj_dns_resolver *resolver;
    pj_str_t nameservers[PJ_DNS_RESOLVER_MAX_NS];
    unsigned int count = 0;
 
    discovered_nameservers = ast_dns_get_nameservers();
    if (!discovered_nameservers) {
        ast_log(LOG_ERROR, "Could not retrieve local system nameservers, resorting to system resolution\n");
        return 0;
    }
 
    if (!ao2_container_count(discovered_nameservers)) {
        ast_log(LOG_ERROR, "There are no local system nameservers configured, resorting to system resolution\n");
        ao2_ref(discovered_nameservers, -1);
        return -1;
    }
 
    if (!(resolver = pjsip_endpt_get_resolver(ast_sip_get_pjsip_endpoint()))) {
        status = pjsip_endpt_create_resolver(ast_sip_get_pjsip_endpoint(), &resolver);
        if (status != PJ_SUCCESS) {
            ast_log(LOG_ERROR, "Could not create DNS resolver(%d), resorting to system resolution\n", status);
            ao2_ref(discovered_nameservers, -1);
            return 0;
        }
    }
 
    it_nameservers = ao2_iterator_init(discovered_nameservers, 0);
    while ((nameserver = ao2_iterator_next(&it_nameservers))) {
        pj_strset2(&nameservers[count++], nameserver);
        ao2_ref(nameserver, -1);
 
        if (count == (PJ_DNS_RESOLVER_MAX_NS - 1)) {
            break;
        }
    }
    ao2_iterator_destroy(&it_nameservers);
 
    status = pj_dns_resolver_set_ns(resolver, count, nameservers, NULL);
 
    /* Since we no longer need the nameservers we can drop the list of them */
    ao2_ref(discovered_nameservers, -1);
 
    if (status != PJ_SUCCESS) {
        ast_log(LOG_ERROR, "Could not set nameservers on DNS resolver in PJSIP(%d), resorting to system resolution\n",
            status);
        return 0;
    }
 
    if (!pjsip_endpt_get_resolver(ast_sip_get_pjsip_endpoint())) {
        status = pjsip_endpt_set_resolver(ast_sip_get_pjsip_endpoint(), resolver);
        if (status != PJ_SUCCESS) {
            ast_log(LOG_ERROR, "Could not set DNS resolver in PJSIP(%d), resorting to system resolution\n", status);
            return 0;
        }
    }
 
    return 0;
}

References ao2_container_count(), ao2_iterator_destroy(), ao2_iterator_init(), ao2_iterator_next, ao2_ref, ast_dns_get_nameservers(), ast_log, ast_sip_get_pjsip_endpoint(), LOG_ERROR, NULL, and status.

Referenced by ast_sip_initialize_dns().

Variable Documentation

sip_threadpool_options

struct ast_threadpool_options sip_threadpool_options

static

Initial value:

= {
    .version = AST_THREADPOOL_OPTIONS_VERSION,
}

Definition at line 66 of file config_system.c.

Referenced by sip_get_threadpool_options(), and system_apply().

system_sorcery

struct ast_sorcery* system_sorcery

static

Definition at line 75 of file config_system.c.

Referenced by ast_sip_destroy_system(), ast_sip_initialize_system(), get_system_cfg(), and sip_cli_print_system().