/******************************************************************************
* FunctionName : syslog
* Description : compose and queue a new syslog message
* Parameters : facility
* severity
* tag
* message
* ...
*
* SYSLOG-MSG = HEADER SP STRUCTURED-DATA [SP MSG]
HEADER = PRI VERSION SP TIMESTAMP SP HOSTNAME
SP APP-NAME SP PROCID SP MSGID
PRI = "<" PRIVAL ">"
PRIVAL = 1*3DIGIT ; range 0 .. 191
VERSION = NONZERO-DIGIT 0*2DIGIT
HOSTNAME = NILVALUE / 1*255PRINTUSASCII
APP-NAME = NILVALUE / 1*48PRINTUSASCII
PROCID = NILVALUE / 1*128PRINTUSASCII
MSGID = NILVALUE / 1*32PRINTUSASCII
TIMESTAMP = NILVALUE / FULL-DATE "T" FULL-TIME
FULL-DATE = DATE-FULLYEAR "-" DATE-MONTH "-" DATE-MDAY
DATE-FULLYEAR = 4DIGIT
DATE-MONTH = 2DIGIT ; 01-12
DATE-MDAY = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on
; month/year
FULL-TIME = PARTIAL-TIME TIME-OFFSET
PARTIAL-TIME = TIME-HOUR ":" TIME-MINUTE ":" TIME-SECOND
[TIME-SECFRAC]
TIME-HOUR = 2DIGIT ; 00-23
TIME-MINUTE = 2DIGIT ; 00-59
TIME-SECOND = 2DIGIT ; 00-59
TIME-SECFRAC = "." 1*6DIGIT
TIME-OFFSET = "Z" / TIME-NUMOFFSET
TIME-NUMOFFSET = ("+" / "-") TIME-HOUR ":" TIME-MINUTE
STRUCTURED-DATA = NILVALUE / 1*SD-ELEMENT
SD-ELEMENT = "[" SD-ID *(SP SD-PARAM) "]"
SD-PARAM = PARAM-NAME "=" %d34 PARAM-VALUE %d34
SD-ID = SD-NAME
PARAM-NAME = SD-NAME
PARAM-VALUE = UTF-8-STRING ; characters '"', '\' and
; ']' MUST be escaped.
SD-NAME = 1*32PRINTUSASCII
; except '=', SP, ']', %d34 (")
MSG = MSG-ANY / MSG-UTF8
MSG-ANY = *OCTET ; not starting with BOM
MSG-UTF8 = BOM UTF-8-STRING
BOM = %xEF.BB.BF
UTF-8-STRING = *OCTET ; UTF-8 string as specified
; in RFC 3629
OCTET = %d00-255
SP = %d32
PRINTUSASCII = %d33-126
NONZERO-DIGIT = %d49-57
DIGIT = %d48 / NONZERO-DIGIT
NILVALUE = "-"
*
* TIMESTAMP: realtime_clock == 0 ? timertick / 10⁶ : realtime_clock
* HOSTNAME hostname
* APPNAME: ems-esp-link
* PROCID: timertick
* MSGID: NILVALUE
*
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR syslog(uint8_t facility, uint8_t severity, const char *tag, const char *fmt, ...)
{
DBG("syslog: state=%d ", syslogState);
if (syslogState == SYSLOG_ERROR ||
syslogState == SYSLOG_HALTED)
return;
// compose the syslog message
void *arg = __builtin_apply_args();
void *res = __builtin_apply((void*)syslog_compose, arg, 128);
syslog_entry_t *se = *(syslog_entry_t **)res;
// and append it to the message queue
syslog_add_entry(se);
if (syslogState == SYSLOG_READY) {
syslogState = SYSLOG_SENDING;
syslog_send_udp();
}
if (syslogState == SYSLOG_NONE) {
syslogState = SYSLOG_WAIT;
syslog_chk_wifi_stat(); // fire the timer to check the Wifi connection status
}
}
/*****************************************************************************
* FunctionName : syslog
* Description : compose and queue a new syslog message
* Parameters : facility
* severity
* tag
* message
* ...
*
* SYSLOG-MSG = HEADER SP STRUCTURED-DATA [SP MSG]
HEADER = PRI VERSION SP TIMESTAMP SP HOSTNAME
SP APP-NAME SP PROCID SP MSGID
PRI = "<" PRIVAL ">"
PRIVAL = 1*3DIGIT ; range 0 .. 191
VERSION = NONZERO-DIGIT 0*2DIGIT
HOSTNAME = NILVALUE / 1*255PRINTUSASCII
APP-NAME = NILVALUE / 1*48PRINTUSASCII
PROCID = NILVALUE / 1*128PRINTUSASCII
MSGID = NILVALUE / 1*32PRINTUSASCII
TIMESTAMP = NILVALUE / FULL-DATE "T" FULL-TIME
FULL-DATE = DATE-FULLYEAR "-" DATE-MONTH "-" DATE-MDAY
DATE-FULLYEAR = 4DIGIT
DATE-MONTH = 2DIGIT ; 01-12
DATE-MDAY = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on
; month/year
FULL-TIME = PARTIAL-TIME TIME-OFFSET
PARTIAL-TIME = TIME-HOUR ":" TIME-MINUTE ":" TIME-SECOND
[TIME-SECFRAC]
TIME-HOUR = 2DIGIT ; 00-23
TIME-MINUTE = 2DIGIT ; 00-59
TIME-SECOND = 2DIGIT ; 00-59
TIME-SECFRAC = "." 1*6DIGIT
TIME-OFFSET = "Z" / TIME-NUMOFFSET
TIME-NUMOFFSET = ("+" / "-") TIME-HOUR ":" TIME-MINUTE
STRUCTURED-DATA = NILVALUE / 1*SD-ELEMENT
SD-ELEMENT = "[" SD-ID *(SP SD-PARAM) "]"
SD-PARAM = PARAM-NAME "=" %d34 PARAM-VALUE %d34
SD-ID = SD-NAME
PARAM-NAME = SD-NAME
PARAM-VALUE = UTF-8-STRING ; characters '"', '\' and
; ']' MUST be escaped.
SD-NAME = 1*32PRINTUSASCII
; except '=', SP, ']', %d34 (")
MSG = MSG-ANY / MSG-UTF8
MSG-ANY = *OCTET ; not starting with BOM
MSG-UTF8 = BOM UTF-8-STRING
BOM = %xEF.BB.BF
UTF-8-STRING = *OCTET ; UTF-8 string as specified
; in RFC 3629
OCTET = %d00-255
SP = %d32
PRINTUSASCII = %d33-126
NONZERO-DIGIT = %d49-57
DIGIT = %d48 / NONZERO-DIGIT
NILVALUE = "-"
*
* TIMESTAMP: realtime_clock == 0 ? timertick / 10⁶ : realtime_clock
* HOSTNAME hostname
* APPNAME: ems-esp-link
* PROCID: timertick
* MSGID: NILVALUE
*
* Returns : none
*******************************************************************************/
void ICACHE_FLASH_ATTR syslog(uint8_t facility, uint8_t severity, const char *tag, const char *fmt, ...)
{
DBG("[%dµs] %s status: %s\n", WDEV_NOW(), __FUNCTION__, syslog_get_status());
if (syslogState == SYSLOG_ERROR ||
syslogState == SYSLOG_HALTED ||
flashConfig.syslog_host[0] == '\0')
return;
if (severity > flashConfig.syslog_filter)
return;
// compose the syslog message
void *arg = __builtin_apply_args();
void *res = __builtin_apply((void*)syslog_compose, arg, 128);
if (res == NULL) return; // compose failed, probably due to malloc failure
syslog_entry_t *se = *(syslog_entry_t **)res;
// and append it to the message queue
syslog_add_entry(se);
if (syslogState == SYSLOG_NONE)
syslog_set_status(SYSLOG_WAIT);
if (! syslog_timer_armed)
syslog_chk_status();
}