Add custom CDR (bug #3595)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5253 65c4cc65-6c06-0410-ace0-fbb531ad65f3

cdr/Makefile

@@ -12,7 +12,7 @@
 #
 
 #ADD cdr_pgsql.so to MODS= to include PostgreSQL support: REQUIRES PostgreSQL libs
-MODS=cdr_csv.so cdr_manager.so
+MODS=cdr_csv.so cdr_manager.so cdr_custom.so
 
 
 CFLAGS+=-fPIC

cdr/cdr_custom.c

+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * Comma Separated Value CDR records.
+ * 
+ * Copyright (C) 1999 - 2005, Digium, inc 
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License.
+ *
+ * Includes code and algorithms from the Zapata library.
+ *
+ */
+
+#include <sys/types.h>
+#include <asterisk/channel.h>
+#include <asterisk/cdr.h>
+#include <asterisk/module.h>
+#include <asterisk/config.h>
+#include <asterisk/channel_pvt.h>
+#include <asterisk/pbx.h>
+#include <asterisk/logger.h>
+#include <asterisk/utils.h>
+#include "../asterisk.h"
+#include "../astconf.h"
+
+#define CUSTOM_LOG_DIR "/cdr_custom"
+
+#define DATE_FORMAT "%Y-%m-%d %T"
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+
+AST_MUTEX_DEFINE_STATIC(lock);
+
+static char *desc = "Customizable Comma Separated Values CDR Backend";
+
+static char *name = "cdr-custom";
+
+static FILE *mf = NULL;
+
+static char master[AST_CONFIG_MAX_PATH];
+static char format[1024]="";
+
+static int load_config(int reload) 
+{
+	struct ast_config *cfg;
+	struct ast_variable *var;
+	int res = -1;
+
+	strcpy(format, "");
+	strcpy(master, "");
+	if((cfg = ast_config_load("cdr_custom.conf"))) {
+		var = ast_variable_browse(cfg, "mappings");
+		while(var) {
+			ast_mutex_lock(&lock);
+			if (!ast_strlen_zero(var->name) && !ast_strlen_zero(var->value)) {
+				strncpy(format, var->value, sizeof(format) - 2);
+				strcat(format,"\n");
+				snprintf(master, sizeof(master),"%s/%s/%s", ast_config_AST_LOG_DIR, name, var->name);
+				ast_mutex_unlock(&lock);
+			} else
+				ast_log(LOG_NOTICE, "Mapping must have both filename and format at line %d\n", var->lineno);
+			if (var->next)
+				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); 
+			var = var->next;
+		}
+		ast_config_destroy(cfg);
+	}
+	
+	return res;
+}
+
+
+
+static int custom_log(struct ast_cdr *cdr)
+{
+	/* Make sure we have a big enough buf */
+	char buf[2048];
+	struct ast_channel dummy;
+
+	/* Abort if no master file is specified */
+	if (ast_strlen_zero(master))
+		return 0;
+
+	memset(buf, 0 , sizeof(buf));
+	/* Quite possibly the first use of a static struct ast_channel, we need it so the var funcs will work */
+	memset(&dummy, 0, sizeof(dummy));
+	dummy.cdr = cdr;
+	pbx_substitute_variables_helper(&dummy, format, buf, sizeof(buf) - 1);
+
+	/* because of the absolutely unconditional need for the
+	   highest reliability possible in writing billing records,
+	   we open write and close the log file each time */
+	mf = fopen(master, "a");
+	if (!mf) {
+		ast_log(LOG_ERROR, "Unable to re-open master file %s : %s\n", master, strerror(errno));
+	}
+	if (mf) {
+		fputs(buf, mf);
+		fflush(mf); /* be particularly anal here */
+		fclose(mf);
+		mf = NULL;
+	}
+	return 0;
+}
+
+char *description(void)
+{
+	return desc;
+}
+
+int unload_module(void)
+{
+	if (mf)
+		fclose(mf);
+	ast_cdr_unregister(name);
+	return 0;
+}
+
+int load_module(void)
+{
+	int res;
+
+	res = load_config(0);
+	if (!res)
+		res = ast_cdr_register(name, desc, custom_log);
+	if (res) {
+		ast_log(LOG_ERROR, "Unable to register custom CDR handling\n");
+		res = 0;
+		if (mf)
+			fclose(mf);
+	}
+	return res;
+}
+
+int reload(void)
+{
+	return load_config(1);
+}
+
+int usecount(void)
+{
+	return 0;
+}
+
+char *key()
+{
+	return ASTERISK_GPL_KEY;
+}

configs/cdr_custom.conf

+;
+; Mappings for custom config file
+;
+[mappings]
+Master.csv => "${CDR(clid)}","${CDR(src)}","${CDR(dst)}","${CDR(dcontext)}","${CDR(channel)}","${CDR(dstchannel)}","${CDR(lastapp)}","${CDR(lastdata)}","${CDR(start)}","${CDR(answer)}","${CDR(end)}","${CDR(duration)}","${CDR(billsec)}","${CDR(disposition)}","${CDR(amaflags)}","${CDR(accountcode)}","${CDR(uniqueid)}","${CDR(userfield)}"
+