276 lines
6.7 KiB
C
Executable File
276 lines
6.7 KiB
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Comma Separated Value CDR records.
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*
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* Copyright (C) 1999, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License.
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*
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* Includes code and algorithms from the Zapata library.
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*
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*/
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#include <sys/types.h>
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#include <asterisk/channel.h>
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#include <asterisk/cdr.h>
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#include <asterisk/module.h>
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#include <asterisk/logger.h>
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#include <asterisk/utils.h>
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#include "../asterisk.h"
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#include "../astconf.h"
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#define CSV_LOG_DIR "/cdr-csv"
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#define CSV_MASTER "/Master.csv"
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#define DATE_FORMAT "%Y-%m-%d %T"
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/* #define CSV_LOGUNIQUEID 1 */
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/* #define CSV_LOGUSERFIELD 1 */
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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/* The values are as follows:
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"accountcode", // accountcode is the account name of detail records, Master.csv contains all records
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// Detail records are configured on a channel basis, IAX and SIP are determined by user
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// Zap is determined by channel in zaptel.conf
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"source",
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"destination",
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"destination context",
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"callerid",
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"channel",
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"destination channel", (if applicable)
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"last application", // Last application run on the channel
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"last app argument", // argument to the last channel
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"start time",
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"answer time",
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"end time",
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duration, // Duration is the whole length that the entire call lasted. ie. call rx'd to hangup
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// "end time" minus "start time"
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billable seconds, // the duration that a call was up after other end answered which will be <= to duration
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// "end time" minus "answer time"
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"disposition", // ANSWERED, NO ANSWER, BUSY
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"amaflags", // DOCUMENTATION, BILL, IGNORE etc, specified on a per channel basis like accountcode.
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"uniqueid", // unique call identifier
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"userfield" // user field set via SetCDRUserField
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*/
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static char *desc = "Comma Separated Values CDR Backend";
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static char *name = "csv";
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static FILE *mf = NULL;
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static int append_string(char *buf, char *s, size_t bufsize)
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{
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int pos = strlen(buf);
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int spos = 0;
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int error = 0;
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if (pos >= bufsize - 4)
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return -1;
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buf[pos++] = '\"';
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error = -1;
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while(pos < bufsize - 3) {
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if (!s[spos]) {
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error = 0;
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break;
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}
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if (s[spos] == '\"')
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buf[pos++] = '\"';
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buf[pos++] = s[spos];
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spos++;
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}
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buf[pos++] = '\"';
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buf[pos++] = ',';
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buf[pos++] = '\0';
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return error;
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}
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static int append_int(char *buf, int s, size_t bufsize)
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{
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char tmp[32];
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int pos = strlen(buf);
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snprintf(tmp, sizeof(tmp), "%d", s);
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if (pos + strlen(tmp) > bufsize - 3)
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return -1;
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strncat(buf, tmp, bufsize - strlen(buf) - 1);
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pos = strlen(buf);
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buf[pos++] = ',';
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buf[pos++] = '\0';
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return 0;
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}
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static int append_date(char *buf, struct timeval tv, size_t bufsize)
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{
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char tmp[80] = "";
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struct tm tm;
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time_t t;
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t = tv.tv_sec;
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if (strlen(buf) > bufsize - 3)
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return -1;
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if (!tv.tv_sec && !tv.tv_usec) {
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strncat(buf, ",", bufsize - strlen(buf) - 1);
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return 0;
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}
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localtime_r(&t,&tm);
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strftime(tmp, sizeof(tmp), DATE_FORMAT, &tm);
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return append_string(buf, tmp, bufsize);
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}
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static int build_csv_record(char *buf, size_t bufsize, struct ast_cdr *cdr)
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{
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buf[0] = '\0';
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/* Account code */
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append_string(buf, cdr->accountcode, bufsize);
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/* Source */
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append_string(buf, cdr->src, bufsize);
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/* Destination */
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append_string(buf, cdr->dst, bufsize);
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/* Destination context */
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append_string(buf, cdr->dcontext, bufsize);
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/* Caller*ID */
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append_string(buf, cdr->clid, bufsize);
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/* Channel */
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append_string(buf, cdr->channel, bufsize);
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/* Destination Channel */
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append_string(buf, cdr->dstchannel, bufsize);
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/* Last Application */
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append_string(buf, cdr->lastapp, bufsize);
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/* Last Data */
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append_string(buf, cdr->lastdata, bufsize);
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/* Start Time */
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append_date(buf, cdr->start, bufsize);
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/* Answer Time */
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append_date(buf, cdr->answer, bufsize);
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/* End Time */
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append_date(buf, cdr->end, bufsize);
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/* Duration */
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append_int(buf, cdr->duration, bufsize);
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/* Billable seconds */
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append_int(buf, cdr->billsec, bufsize);
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/* Disposition */
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append_string(buf, ast_cdr_disp2str(cdr->disposition), bufsize);
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/* AMA Flags */
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append_string(buf, ast_cdr_flags2str(cdr->amaflags), bufsize);
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#ifdef CSV_LOGUNIQUEID
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/* Unique ID */
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append_string(buf, cdr->uniqueid, bufsize);
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#endif
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#ifdef CSV_LOGUSERFIELD
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/* append the user field */
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append_string(buf, cdr->userfield,bufsize);
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#endif
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/* If we hit the end of our buffer, log an error */
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if (strlen(buf) < bufsize - 5) {
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/* Trim off trailing comma */
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buf[strlen(buf) - 1] = '\0';
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strncat(buf, "\n", bufsize - strlen(buf) - 1);
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return 0;
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}
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return -1;
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}
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static int writefile(char *s, char *acc)
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{
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char tmp[256];
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FILE *f;
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if (strchr(acc, '/') || (acc[0] == '.')) {
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ast_log(LOG_WARNING, "Account code '%s' insecure for writing file\n", acc);
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return -1;
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}
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snprintf(tmp, sizeof(tmp), "%s/%s/%s.csv", (char *)ast_config_AST_LOG_DIR,CSV_LOG_DIR, acc);
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f = fopen(tmp, "a");
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if (!f)
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return -1;
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fputs(s, f);
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fclose(f);
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return 0;
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}
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static int csv_log(struct ast_cdr *cdr)
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{
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/* Make sure we have a big enough buf */
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char buf[1024];
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char csvmaster[AST_CONFIG_MAX_PATH];
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snprintf(csvmaster, sizeof(csvmaster),"%s/%s/%s", ast_config_AST_LOG_DIR, CSV_LOG_DIR, CSV_MASTER);
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#if 0
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printf("[CDR] %s ('%s' -> '%s') Dur: %ds Bill: %ds Disp: %s Flags: %s Account: [%s]\n", cdr->channel, cdr->src, cdr->dst, cdr->duration, cdr->billsec, ast_cdr_disp2str(cdr->disposition), ast_cdr_flags2str(cdr->amaflags), cdr->accountcode);
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#endif
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if (build_csv_record(buf, sizeof(buf), cdr)) {
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ast_log(LOG_WARNING, "Unable to create CSV record in %d bytes. CDR not recorded!\n", (int)sizeof(buf));
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} else {
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/* because of the absolutely unconditional need for the
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highest reliability possible in writing billing records,
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we open write and close the log file each time */
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mf = fopen(csvmaster, "a");
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if (!mf) {
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ast_log(LOG_ERROR, "Unable to re-open master file %s\n", csvmaster);
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}
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if (mf) {
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fputs(buf, mf);
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fflush(mf); /* be particularly anal here */
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fclose(mf);
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mf = NULL;
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}
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if (!ast_strlen_zero(cdr->accountcode)) {
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if (writefile(buf, cdr->accountcode))
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ast_log(LOG_WARNING, "Unable to write CSV record to account file '%s'\n", cdr->accountcode);
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}
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}
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return 0;
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}
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char *description(void)
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{
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return desc;
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}
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int unload_module(void)
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{
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if (mf)
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fclose(mf);
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ast_cdr_unregister(name);
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return 0;
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}
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int load_module(void)
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{
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int res;
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res = ast_cdr_register(name, desc, csv_log);
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if (res) {
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ast_log(LOG_ERROR, "Unable to register CSV CDR handling\n");
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if (mf)
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fclose(mf);
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}
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return res;
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}
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int reload(void)
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{
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return 0;
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}
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int usecount(void)
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{
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return 0;
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}
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char *key()
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{
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return ASTERISK_GPL_KEY;
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}
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