res_pjsip_pidf_body_generator.c File Reference

#include "asterisk.h"
#include <pjsip.h>
#include <pjsip_simple.h>
#include <pjlib.h>
#include "asterisk/module.h"
#include "asterisk/res_pjsip.h"
#include "asterisk/res_pjsip_pubsub.h"
#include "asterisk/res_pjsip_presence_xml.h"
#include "asterisk/res_pjsip_body_generator_types.h"

Include dependency graph for res_pjsip_pidf_body_generator.c:

Go to the source code of this file.

Macros
#define	MAX_STRING_GROWTHS   5

Functions
static void	__reg_module (void)
static void	__unreg_module (void)
struct ast_module *	AST_MODULE_SELF_SYM (void)
static int	load_module (void)
static void *	pidf_allocate_body (void *data)
static int	pidf_generate_body_content (void *body, void *data)
static void	pidf_to_string (void *body, struct ast_str **str)
static int	unload_module (void)

Variables
static struct ast_module_info	__mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "PJSIP Extension State PIDF Provider" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_CHANNEL_DEPEND, .requires = "res_pjsip,res_pjsip_pubsub", }
static const struct ast_module_info *	ast_module_info = &__mod_info
static struct ast_sip_pubsub_body_generator	pidf_body_generator

Macro Definition Documentation

MAX_STRING_GROWTHS

#define MAX_STRING_GROWTHS   5

Definition at line 83 of file res_pjsip_pidf_body_generator.c.

Function Documentation

__reg_module()

static void __reg_module ( void  )

static

Definition at line 137 of file res_pjsip_pidf_body_generator.c.

__unreg_module()

static void __unreg_module ( void  )

static

Definition at line 137 of file res_pjsip_pidf_body_generator.c.

AST_MODULE_SELF_SYM()

struct ast_module * AST_MODULE_SELF_SYM

(

void

)

Definition at line 137 of file res_pjsip_pidf_body_generator.c.

load_module()

static int load_module ( void  )

static

Definition at line 117 of file res_pjsip_pidf_body_generator.c.

{
    if (ast_sip_pubsub_register_body_generator(&pidf_body_generator)) {
        return AST_MODULE_LOAD_DECLINE;
    }
    return AST_MODULE_LOAD_SUCCESS;
}

References AST_MODULE_LOAD_DECLINE, AST_MODULE_LOAD_SUCCESS, ast_sip_pubsub_register_body_generator(), and pidf_body_generator.

pidf_allocate_body()

static void * pidf_allocate_body ( void *  data )

static

Definition at line 38 of file res_pjsip_pidf_body_generator.c.

{
    struct ast_sip_exten_state_data *state_data = data;
    char *local = ast_strdupa(state_data->local);
    pjpidf_pres *pres;
    pj_str_t entity;
 
    pres = pjpidf_create(state_data->pool, pj_cstr(&entity, ast_strip_quoted(local, "<", ">")));
 
    return pres;
}

References ast_strdupa, ast_strip_quoted(), ast_sip_exten_state_data::local, and ast_sip_exten_state_data::pool.

pidf_generate_body_content()

static int pidf_generate_body_content ( void *  body, void *  data  )

static

Definition at line 50 of file res_pjsip_pidf_body_generator.c.

{
    pjpidf_tuple *tuple;
    pj_str_t note, id, contact, priority;
    char *statestring = NULL, *pidfstate = NULL, *pidfnote = NULL;
    enum ast_sip_pidf_state local_state;
    char sanitized[PJSIP_MAX_URL_SIZE];
    pjpidf_pres *pres = body;
    struct ast_sip_exten_state_data *state_data = data;
 
    ast_sip_presence_exten_state_to_str(state_data->exten_state, &statestring,
            &pidfstate, &pidfnote, &local_state, 0);
 
    if (!pjpidf_pres_add_note(state_data->pool, pres, pj_cstr(&note, pidfnote))) {
        ast_log(LOG_WARNING, "Unable to add note to PIDF presence\n");
        return -1;
    }
 
    if (!(tuple = pjpidf_pres_add_tuple(state_data->pool, pres,
                    pj_cstr(&id, state_data->exten)))) {
        ast_log(LOG_WARNING, "Unable to create PIDF tuple\n");
        return -1;
    }
 
    ast_sip_sanitize_xml(state_data->remote, sanitized, sizeof(sanitized));
    pjpidf_tuple_set_contact(state_data->pool, tuple, pj_cstr(&contact, sanitized));
    pjpidf_tuple_set_contact_prio(state_data->pool, tuple, pj_cstr(&priority, "1"));
    pjpidf_status_set_basic_open(pjpidf_tuple_get_status(tuple),
            local_state == NOTIFY_OPEN || local_state == NOTIFY_INUSE);
 
    return 0;
}

References ast_log, ast_sip_presence_exten_state_to_str(), ast_sip_sanitize_xml(), ast_sip_exten_state_data::exten, ast_sip_exten_state_data::exten_state, id, LOG_WARNING, NOTIFY_INUSE, NOTIFY_OPEN, NULL, ast_sip_exten_state_data::pool, priority, and ast_sip_exten_state_data::remote.

pidf_to_string()

static void pidf_to_string ( void *  body, struct ast_str **  str  )

static

Definition at line 85 of file res_pjsip_pidf_body_generator.c.

{
    pjpidf_pres *pres = body;
    int growths = 0;
    int size;
 
    do {
        size = pjpidf_print(pres, ast_str_buffer(*str), ast_str_size(*str) - 1);
        if (size <= AST_PJSIP_XML_PROLOG_LEN) {
            ast_str_make_space(str, ast_str_size(*str) * 2);
            ++growths;
        }
    } while (size <= AST_PJSIP_XML_PROLOG_LEN && growths < MAX_STRING_GROWTHS);
    if (size <= AST_PJSIP_XML_PROLOG_LEN) {
        ast_log(LOG_WARNING, "PIDF body text too large\n");
        return;
    }
 
    *(ast_str_buffer(*str) + size) = '\0';
    ast_str_update(*str);
}

References ast_log, AST_PJSIP_XML_PROLOG_LEN, ast_str_buffer(), ast_str_make_space, ast_str_size(), ast_str_update(), LOG_WARNING, MAX_STRING_GROWTHS, and str.

unload_module()

static int unload_module ( void  )

static

Definition at line 125 of file res_pjsip_pidf_body_generator.c.

{
    ast_sip_pubsub_unregister_body_generator(&pidf_body_generator);
    return 0;
}

References ast_sip_pubsub_unregister_body_generator(), and pidf_body_generator.

Variable Documentation

__mod_info

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "PJSIP Extension State PIDF Provider" , .key = ASTERISK_GPL_KEY , .buildopt_sum = AST_BUILDOPT_SUM, .support_level = AST_MODULE_SUPPORT_CORE, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_CHANNEL_DEPEND, .requires = "res_pjsip,res_pjsip_pubsub", }

static

Definition at line 137 of file res_pjsip_pidf_body_generator.c.

ast_module_info

const struct ast_module_info* ast_module_info = &__mod_info

static

Definition at line 137 of file res_pjsip_pidf_body_generator.c.

pidf_body_generator

struct ast_sip_pubsub_body_generator pidf_body_generator

static

Definition at line 107 of file res_pjsip_pidf_body_generator.c.

                                                                  {
    .type = "application",
    .subtype = "pidf+xml",
    .body_type = AST_SIP_EXTEN_STATE_DATA,
    .allocate_body = pidf_allocate_body,
    .generate_body_content = pidf_generate_body_content,
    .to_string = pidf_to_string,
    /* No need for a destroy_body callback since we use a pool */
};

Referenced by load_module(), and unload_module().