bb_alog.c

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/* ==================================================================== 
 * The Kannel Software License, Version 1.0 
 * 
 * Copyright (c) 2001-2008 Kannel Group  
 * Copyright (c) 1998-2001 WapIT Ltd.   
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 *       "This product includes software developed by the 
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 * This software consists of voluntary contributions made by many 
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 * 
 * Portions of this software are based upon software originally written at  
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 */ 

/*
 * gw/bb_alog.c -- encapsulate custom access log logic and escape code parsing
 *
 * Stipe Tolj <stolj@wapme.de>
 * Alexander Malysh <a.malysh@centrium.de>
 */

#include "gwlib/gwlib.h"
#include "msg.h"
#include "sms.h"
#include "bearerbox.h"
#include "smscconn.h"

static Octstr *custom_log_format = NULL;


/********************************************************************
 * Routine to escape the values into the custom log format.
 *
 * The following escape code values are acceptable within the 
 * 'access-log-format' config directive of bearerbox:
 *
 *   %l - log message
 *   %i - smsc-id
 *   %n - service-name (for MO) or sendsms-user (for MT)
 *   %A - account
 *   %B - billing identifier/information
 *   %p - sender (from) 
 *   %P - receiver (to)
 *   %m - message class (mclass)
 *   %c - coding
 *   %M - message waiting indicator (mwi)
 *   %C - compress indicator
 *   %d - dlr_mask
 *   %a - the original SMS message, spaces squeezed
 *   %u - UDH data (in escaped form)
 *   %U - length of UDH data
 *   %k - the keyword in the SMS request (the first word in the SMS message) 
 *   %s - next word from the SMS message, starting with the second one
 *   %S - same as %s, but '*' is converted to '~' 
 *   %r - words not yet used by %s
 *   %b - the original SMS message
 *   %L - length of SMS message
 *   %t - the time of the message, formatted as "YYYY-MM-DD HH:MM:SS"
 *   %T - the time of the message, in UNIX epoch timestamp format
 *   %I - the internal message ID
 *
 * Most escape codes should be compatible with escape codes used in
 * sms-service groups.
 *
 * The default access-log-format would look like this (if access-log-clean is true):
 *   "%t %l [SMSC:%i] [SVC:%n] [ACT:%A] [BINF:%B] [from:%p] [to:%P] \
 *    [flags:%m:%c:%M:%C:%d] [msg:%L:%b] [udh:%U:%u]"
 */
  
static Octstr *get_pattern(SMSCConn *conn, Msg *msg, const char *message)
{
    int nextarg, j;
    struct tm tm;
    int num_words;
    List *word_list;
    Octstr *result;
    const char *pattern;
    Octstr *temp, *text, *udh;
    size_t n;
    long i;
 
    text = msg->sms.msgdata ? octstr_duplicate(msg->sms.msgdata) : octstr_create("");
    udh = msg->sms.udhdata ? octstr_duplicate(msg->sms.udhdata) : octstr_create("");
    if ((msg->sms.coding == DC_8BIT || msg->sms.coding == DC_UCS2))
        octstr_binary_to_hex(text, 1);
    else
        octstr_convert_printable(text);
    octstr_binary_to_hex(udh, 1);

    if (octstr_len(text)) {
        word_list = octstr_split_words(text);
        num_words = gwlist_len(word_list);
    } else {
        word_list = gwlist_create();
        num_words = 0;
    }

    result = octstr_create("");
    pattern = octstr_get_cstr(custom_log_format);

    nextarg = 1;

    while(*pattern != '\0') {
        n = strcspn(pattern, "%");
        octstr_append_data(result, pattern, n);
        pattern += n;
        gw_assert(*pattern == '%' || *pattern == '\0');
        if (*pattern == '\0')
            break;

        pattern++;
        
        switch (*pattern) {
    case 'k':
        if (num_words <= 0)
                break;
        octstr_append(result, gwlist_get(word_list, 0));
        break;

    case 's':
        if (nextarg >= num_words)
                break;
        octstr_append(result, gwlist_get(word_list, nextarg));
        ++nextarg;
        break;

    case 'S':
        if (nextarg >= num_words)
                break;
        temp = gwlist_get(word_list, nextarg);
        for (i = 0; i < octstr_len(temp); ++i) {
        if (octstr_get_char(temp, i) == '*')
            octstr_append_char(result, '~');
        else
            octstr_append_char(result, octstr_get_char(temp, i));
        }
        ++nextarg;
        break;

    case 'r':
        for (j = nextarg; j < num_words; ++j) {
        if (j != nextarg)
            octstr_append_char(result, '+');
        octstr_append(result, gwlist_get(word_list, j));
        }
        break;
    
    case 'l':
            if (message)
            octstr_append_cstr(result, message);
        break;

    case 'P':
            if (msg->sms.receiver)
            octstr_append(result, msg->sms.receiver);
        break;

    case 'p':
            if (msg->sms.sender)
            octstr_append(result, msg->sms.sender);
        break;

    case 'a':
        for (j = 0; j < num_words; ++j) {
                if (j > 0)
                    octstr_append_char(result, ' ');
                octstr_append(result, gwlist_get(word_list, j));
            }
            break;

    case 'b':
            if (text)
            octstr_append(result, text);
        break;

    case 'L':
        octstr_append_decimal(result, octstr_len(msg->sms.msgdata));
        break;

    case 't':
        tm = gw_gmtime(msg->sms.time);
        octstr_format_append(result, "%04d-%02d-%02d %02d:%02d:%02d",
                 tm.tm_year + 1900,
                 tm.tm_mon + 1,
                 tm.tm_mday,
                 tm.tm_hour,
                 tm.tm_min,
                 tm.tm_sec);
        break;

    case 'T':
        if (msg->sms.time != MSG_PARAM_UNDEFINED)
            octstr_format_append(result, "%ld", msg->sms.time);
        break;

    case 'i':
        if (conn && smscconn_id(conn))
            octstr_append(result, smscconn_id(conn));
        else if (conn && smscconn_name(conn))
            octstr_append(result, smscconn_name(conn));
        else if (msg->sms.smsc_id)
            octstr_append(result, msg->sms.smsc_id);
        break;

    case 'I':
        if (!uuid_is_null(msg->sms.id)) {
                char id[UUID_STR_LEN + 1];
                uuid_unparse(msg->sms.id, id);
            octstr_append_cstr(result, id);
            }
        break;

    case 'n':
        if (msg->sms.service != NULL)
            octstr_append(result, msg->sms.service);
        break;

    case 'd':
        octstr_append_decimal(result, msg->sms.dlr_mask);
        break;

    case 'c':
        octstr_append_decimal(result, msg->sms.coding);
        break;

    case 'm':
        octstr_append_decimal(result, msg->sms.mclass);
        break;

    case 'C':
        octstr_append_decimal(result, msg->sms.compress);
        break;

    case 'M':
        octstr_append_decimal(result, msg->sms.mwi);
        break;

    case 'u':
        if (octstr_len(udh)) {
                octstr_append(result, udh);
        }
        break;

    case 'U':
        octstr_append_decimal(result, octstr_len(msg->sms.udhdata));
        break;

    case 'B':  /* billing identifier/information */
        if (octstr_len(msg->sms.binfo)) {
                octstr_append(result, msg->sms.binfo);
            }
            break;

    case 'A':  /* account */
        if (octstr_len(msg->sms.account)) {
                octstr_append(result, msg->sms.account);
            }
            break;

        /* XXX add more here if needed */

    case '%':
        octstr_format_append(result, "%%");
        break;

    default:
        warning(0, "Unknown escape code (%%%c) within custom-log-format, skipping!", *pattern);
            octstr_format_append(result, "%%%c", *pattern);
        break;
        } /* switch(...) */
    
        pattern++;
    } /* for ... */

    gwlist_destroy(word_list, octstr_destroy_item);

    return result;
}


/********************************************************************
 * 
 */

void bb_alog_init(const Octstr *format)
{
    gw_assert(format != NULL);

    custom_log_format = octstr_duplicate(format);
}


void bb_alog_shutdown(void)
{
    octstr_destroy(custom_log_format);
    custom_log_format = NULL;
}


void bb_alog_sms(SMSCConn *conn, Msg *msg, const char *message)
{
    Octstr *text = NULL;
    
    gw_assert(msg_type(msg) == sms);

    /* if we don't have any custom log, then use our "default" one */
    
    if (custom_log_format == NULL) {
        Octstr *udh;
        const Octstr *cid;

        text = msg->sms.msgdata ? octstr_duplicate(msg->sms.msgdata) : octstr_create("");
        udh = msg->sms.udhdata ? octstr_duplicate(msg->sms.udhdata) : octstr_create("");

        if (conn && smscconn_id(conn))
            cid = smscconn_id(conn);
        else if (conn && smscconn_name(conn))
            cid = smscconn_name(conn);
        else if (msg->sms.smsc_id)
            cid = msg->sms.smsc_id;
        else
            cid = octstr_imm("");

        if ((msg->sms.coding == DC_8BIT || msg->sms.coding == DC_UCS2))
            octstr_binary_to_hex(text, 1);
        else
            octstr_convert_printable(text);
        octstr_binary_to_hex(udh, 1);

        alog("%s [SMSC:%s] [SVC:%s] [ACT:%s] [BINF:%s] [from:%s] [to:%s] [flags:%ld:%ld:%ld:%ld:%ld] "
             "[msg:%ld:%s] [udh:%ld:%s]",
             message,
             octstr_get_cstr(cid),
             msg->sms.service ? octstr_get_cstr(msg->sms.service) : "",
             msg->sms.account ? octstr_get_cstr(msg->sms.account) : "",
             msg->sms.binfo ? octstr_get_cstr(msg->sms.binfo) : "",
             msg->sms.sender ? octstr_get_cstr(msg->sms.sender) : "",
             msg->sms.receiver ? octstr_get_cstr(msg->sms.receiver) : "",
             msg->sms.mclass, msg->sms.coding, msg->sms.mwi, msg->sms.compress,
             msg->sms.dlr_mask, 
             octstr_len(msg->sms.msgdata), octstr_get_cstr(text),
             octstr_len(msg->sms.udhdata), octstr_get_cstr(udh)
        );

        octstr_destroy(udh);
    } else {
        text = get_pattern(conn, msg, message);
        alog("%s", octstr_get_cstr(text));
    }

    octstr_destroy(text);
}

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