Mon Jul 14 17:25:08 2008

Asterisk developer's documentation


cdr_custom.c File Reference

Custom Comma Separated Value CDR records. More...

#include "asterisk.h"
#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <time.h>
#include "asterisk/channel.h"
#include "asterisk/cdr.h"
#include "asterisk/module.h"
#include "asterisk/config.h"
#include "asterisk/pbx.h"
#include "asterisk/logger.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"

Include dependency graph for cdr_custom.c:

Go to the source code of this file.

Defines

#define CUSTOM_LOG_DIR   "/cdr_custom"
#define DATE_FORMAT   "%Y-%m-%d %T"

Functions

 AST_MODULE_INFO (ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT,"Customizable Comma Separated Values CDR Backend",.load=load_module,.unload=unload_module,.reload=reload,)
 AST_MUTEX_DEFINE_STATIC (mf_lock)
 AST_MUTEX_DEFINE_STATIC (lock)
static int custom_log (struct ast_cdr *cdr)
static int load_config (int reload)
static int load_module (void)
static int reload (void)
static int unload_module (void)

Variables

static char format [1024] = ""
static char master [PATH_MAX]
static char * name = "cdr-custom"


Detailed Description

Custom Comma Separated Value CDR records.

Author:
Mark Spencer <markster@digium.com>
Logs in LOG_DIR/cdr_custom

Definition in file cdr_custom.c.


Define Documentation

#define CUSTOM_LOG_DIR   "/cdr_custom"

Definition at line 55 of file cdr_custom.c.

#define DATE_FORMAT   "%Y-%m-%d %T"

Definition at line 57 of file cdr_custom.c.


Function Documentation

AST_MODULE_INFO ( ASTERISK_GPL_KEY  ,
AST_MODFLAG_DEFAULT  ,
"Customizable Comma Separated Values CDR Backend"  ,
load = load_module,
unload = unload_module,
reload = reload 
)

AST_MUTEX_DEFINE_STATIC ( mf_lock   ) 

AST_MUTEX_DEFINE_STATIC ( lock   ) 

static int custom_log ( struct ast_cdr cdr  )  [static]

Definition at line 108 of file cdr_custom.c.

References ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_strlen_zero(), ast_channel::cdr, errno, LOG_ERROR, and pbx_substitute_variables_helper().

Referenced by load_module().

00109 {
00110    FILE *mf = NULL;
00111 
00112    /* Make sure we have a big enough buf */
00113    char buf[2048];
00114    struct ast_channel dummy;
00115 
00116    /* Abort if no master file is specified */
00117    if (ast_strlen_zero(master))
00118       return 0;
00119 
00120    memset(buf, 0 , sizeof(buf));
00121    /* Quite possibly the first use of a static struct ast_channel, we need it so the var funcs will work */
00122    memset(&dummy, 0, sizeof(dummy));
00123    dummy.cdr = cdr;
00124    pbx_substitute_variables_helper(&dummy, format, buf, sizeof(buf) - 1);
00125 
00126    /* because of the absolutely unconditional need for the
00127       highest reliability possible in writing billing records,
00128       we open write and close the log file each time */
00129    ast_mutex_lock(&mf_lock);
00130    mf = fopen(master, "a");
00131    if (mf) {
00132       fputs(buf, mf);
00133       fflush(mf); /* be particularly anal here */
00134       fclose(mf);
00135       mf = NULL;
00136       ast_mutex_unlock(&mf_lock);
00137    } else {
00138       ast_log(LOG_ERROR, "Unable to re-open master file %s : %s\n", master, strerror(errno));
00139       ast_mutex_unlock(&mf_lock);
00140    }
00141 
00142    return 0;
00143 }

static int load_config ( int  reload  )  [static]

Definition at line 67 of file cdr_custom.c.

References ast_config_AST_LOG_DIR, ast_config_destroy(), ast_config_load(), ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_strlen_zero(), ast_variable_browse(), lock, LOG_NOTICE, LOG_WARNING, and var.

00068 {
00069    struct ast_config *cfg;
00070    struct ast_variable *var;
00071    int res = -1;
00072 
00073    strcpy(format, "");
00074    strcpy(master, "");
00075    ast_mutex_lock(&lock);
00076    if((cfg = ast_config_load("cdr_custom.conf"))) {
00077       var = ast_variable_browse(cfg, "mappings");
00078       while(var) {
00079          if (!ast_strlen_zero(var->name) && !ast_strlen_zero(var->value)) {
00080             if (strlen(var->value) > (sizeof(format) - 1))
00081                ast_log(LOG_WARNING, "Format string too long, will be truncated, at line %d\n", var->lineno);
00082             ast_copy_string(format, var->value, sizeof(format) - 1);
00083             strcat(format,"\n");
00084             snprintf(master, sizeof(master),"%s/%s/%s", ast_config_AST_LOG_DIR, name, var->name);
00085             if (var->next) {
00086                ast_log(LOG_NOTICE, "Sorry, only one mapping is supported at this time, mapping '%s' will be ignored at line %d.\n", var->next->name, var->next->lineno); 
00087                break;
00088             }
00089          } else
00090             ast_log(LOG_NOTICE, "Mapping must have both filename and format at line %d\n", var->lineno);
00091          var = var->next;
00092       }
00093       ast_config_destroy(cfg);
00094       res = 0;
00095    } else {
00096       if (reload)
00097          ast_log(LOG_WARNING, "Failed to reload configuration file.\n");
00098       else
00099          ast_log(LOG_WARNING, "Failed to load configuration file. Module not activated.\n");
00100    }
00101    ast_mutex_unlock(&lock);
00102    
00103    return res;
00104 }

static int load_module ( void   )  [static]

Definition at line 151 of file cdr_custom.c.

References ast_cdr_register(), ast_log(), AST_MODULE_LOAD_DECLINE, custom_log(), load_config(), and LOG_ERROR.

00152 {
00153    int res = 0;
00154 
00155    if (!load_config(0)) {
00156       res = ast_cdr_register(name, ast_module_info->description, custom_log);
00157       if (res)
00158          ast_log(LOG_ERROR, "Unable to register custom CDR handling\n");
00159       return res;
00160    } else 
00161       return AST_MODULE_LOAD_DECLINE;
00162 }

static int reload ( void   )  [static]

Definition at line 164 of file cdr_custom.c.

References load_config().

00165 {
00166    return load_config(1);
00167 }

static int unload_module ( void   )  [static]

Definition at line 145 of file cdr_custom.c.

References ast_cdr_unregister().

00146 {
00147    ast_cdr_unregister(name);
00148    return 0;
00149 }


Variable Documentation

char format[1024] = "" [static]

Definition at line 65 of file cdr_custom.c.

char master[PATH_MAX] [static]

Definition at line 64 of file cdr_custom.c.

char* name = "cdr-custom" [static]

Definition at line 62 of file cdr_custom.c.


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