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parseutils.c
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parseutils.c
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/****************************************************************************
* Routines to parse miniSEED.
*
* This file is part of the miniSEED Library.
*
* Copyright (c) 2024 Chad Trabant, EarthScope Data Services
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***************************************************************************/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "libmseed.h"
#include "unpack.h"
#include "mseedformat.h"
/***********************************************************************/ /**
* @brief Parse miniSEED from a buffer
*
* This routine will attempt to parse (detect and unpack) a miniSEED
* record from a specified memory buffer and populate a supplied
* ::MS3Record structure. Both miniSEED 2.x and 3.x records are
* supported.
*
* The record length is automatically detected. For miniSEED 2.x this
* means the record must contain a 1000 blockette.
*
* @param record Buffer containing record to parse
* @param recbuflen Buffer length in bytes
* @param ppmsr Pointer-to-point to a ::MS3Record that will be populated
* @param flags Flags controlling features:
* @parblock
* - \c ::MSF_UNPACKDATA - Unpack data samples
* - \c ::MSF_VALIDATECRC Validate CRC (if present in format)
* @endparblock
* @param verbose control verbosity of diagnostic output
*
* @return Parsing status
* @retval 0 Success, populates the supplied ::MS3Record.
* @retval >0 Data record detected but not enough data is present, the
* return value is a hint of how many more bytes are needed.
* @retval <0 library error code is returned.
*
* \ref MessageOnError - this function logs a message on error except MS_NOTSEED
***************************************************************************/
int
msr3_parse (const char *record, uint64_t recbuflen, MS3Record **ppmsr,
uint32_t flags, int8_t verbose)
{
int64_t reclen = 0;
int64_t retcode = MS_NOERROR;
uint8_t formatversion = 0;
if (!ppmsr || !record)
{
ms_log (2, "%s(): Required input not defined: 'ppmsr' or 'record'\n", __func__);
return MS_GENERROR;
}
/* Detect record, determine length and format version */
reclen = ms3_detect (record, recbuflen, &formatversion);
/* Return record length implied by buffer length if:
- version 2
- length could not be determined
- buffer is at the end of the file
- buffer length is a power of 2
- within supported record length
Power of two if (X & (X - 1)) == 0 */
if (formatversion == 2 &&
reclen == 0 &&
flags & MSF_ATENDOFFILE &&
(recbuflen & (recbuflen - 1)) == 0 &&
recbuflen <= MAXRECLEN)
{
reclen = (int64_t)recbuflen;
}
/* No data record detected */
if (reclen < 0)
{
return MS_NOTSEED;
}
/* Found record but could not determine length */
if (reclen == 0)
{
return MINRECLEN;
}
if (verbose > 2)
{
ms_log (0, "Detected record length of %" PRId64 " bytes\n", reclen);
}
/* Check that record length is in supported range */
if (reclen < MINRECLEN || reclen > MAXRECLEN)
{
ms_log (2, "Record length of %" PRId64 " is out of range allowed: %d to %d)\n",
reclen, MINRECLEN, MAXRECLEN);
return MS_OUTOFRANGE;
}
/* Check if more data is required, return hint */
else if ((uint64_t)reclen > recbuflen)
{
uint64_t need = reclen - recbuflen;
if (verbose > 2)
ms_log (0, "Detected %" PRId64 " byte record, need %" PRIu64 " more bytes\n",
reclen, need);
return (need > MAXRECLEN) ? MAXRECLEN : (int)need;
}
/* Unpack record */
if (formatversion == 3)
{
retcode = msr3_unpack_mseed3 (record, (int)reclen, ppmsr, flags, verbose);
}
else if (formatversion == 2)
{
retcode = msr3_unpack_mseed2 (record, (int)reclen, ppmsr, flags, verbose);
}
else
{
ms_log (2, "Unrecognized format version: %d\n", formatversion);
return MS_GENERROR;
}
if (retcode != MS_NOERROR)
{
msr3_free (ppmsr);
return (int)retcode;
}
return MS_NOERROR;
} /* End of msr3_parse() */
/***************************************************************/ /**
* @brief Detect miniSEED record in buffer
*
* Determine if the buffer contains a miniSEED data record by
* verifying known signatures (fields with known limited values).
*
* If miniSEED 2.x is detected, search the record up to recbuflen
* bytes for a 1000 blockette. If no blockette 1000 is found, search
* at 64-byte offsets for the fixed section of the next header,
* thereby implying the record length.
*
* @param[in] record Buffer to test for record
* @param[in] recbuflen Length of buffer
* @param[out] formatversion Major version of format detected, 0 if unknown
*
* @retval -1 Data record not detected or error
* @retval 0 Data record detected but could not determine length
* @retval >0 Size of the record in bytes
*
* \ref MessageOnError - this function logs a message on error
*********************************************************************/
int64_t
ms3_detect (const char *record, uint64_t recbuflen, uint8_t *formatversion)
{
uint8_t swapflag = 0; /* Byte swapping flag */
uint8_t foundlen = 0; /* Found record length */
int64_t reclen = -1; /* Size of record in bytes */
uint16_t blkt_offset; /* Byte offset for next blockette */
uint16_t blkt_type;
uint16_t next_blkt;
const char *nextfsdh;
if (!record || !formatversion)
{
ms_log (2, "%s(): Required input not defined: 'record' or 'formatversion'\n",
__func__);
return -1;
}
/* Buffer must be at least MINRECLEN */
if (recbuflen < MINRECLEN)
return -1;
/* Check for valid header, set format version */
*formatversion = 0;
if (MS3_ISVALIDHEADER (record))
{
*formatversion = 3;
reclen = MS3FSDH_LENGTH /* Length of fixed portion of header */
+ *pMS3FSDH_SIDLENGTH (record) /* Length of source identifier */
+ *pMS3FSDH_EXTRALENGTH (record) /* Length of extra headers */
+ *pMS3FSDH_DATALENGTH (record); /* Length of data payload */
foundlen = 1;
}
else if (MS2_ISVALIDHEADER (record))
{
*formatversion = 2;
/* Check to see if byte swapping is needed by checking for sane year and day */
if (!MS_ISVALIDYEARDAY (*pMS2FSDH_YEAR(record), *pMS2FSDH_DAY(record)))
swapflag = 1;
blkt_offset = HO2u(*pMS2FSDH_BLOCKETTEOFFSET (record), swapflag);
/* Loop through blockettes as long as number is non-zero and viable */
while (blkt_offset != 0 &&
blkt_offset > 47 &&
blkt_offset <= recbuflen)
{
memcpy (&blkt_type, record + blkt_offset, 2);
memcpy (&next_blkt, record + blkt_offset + 2, 2);
if (swapflag)
{
ms_gswap2 (&blkt_type);
ms_gswap2 (&next_blkt);
}
/* Found a 1000 blockette, not truncated */
if (blkt_type == 1000 &&
(uint64_t)(blkt_offset + 8) <= recbuflen)
{
foundlen = 1;
/* Field 3 of B1000 is a uint8_t value describing the record
* length as 2^(value). Calculate 2-raised with a shift. */
reclen = (uint64_t)1 << *pMS2B1000_RECLEN (record + blkt_offset);
break;
}
/* Safety check for invalid offset */
if (next_blkt != 0 && (next_blkt < 4 || (next_blkt - 4) <= blkt_offset))
{
ms_log (2, "Invalid blockette offset (%d) less than or equal to current offset (%d)\n",
next_blkt, blkt_offset);
return -1;
}
blkt_offset = next_blkt;
}
/* If record length was not determined by a 1000 blockette scan the buffer
* and search for the next record */
if (reclen == -1)
{
nextfsdh = record + 64;
/* Check for record header or blank/noise record at MINRECLEN byte offsets */
while (((uint64_t)(nextfsdh - record) + 48) < recbuflen)
{
if (MS2_ISVALIDHEADER (nextfsdh))
{
foundlen = 1;
reclen = nextfsdh - record;
break;
}
nextfsdh += 64;
}
}
} /* End of miniSEED 2.x detection */
if (*formatversion && !foundlen)
return 0;
else
return reclen;
} /* End of ms3_detect() */
/**********************************************************************/ /**
* @brief Parse and verify a miniSEED 3.x record header
*
* Parsing is done at the lowest level, printing error messages for
* invalid header values and optionally print raw header values.
*
* The buffer at \a record is assumed to be a miniSEED record. Not
* every possible test is performed, common errors and those causing
* library parsing to fail should be detected.
*
* This routine is primarily intended to diagnose invalid miniSEED headers.
*
* @param[in] record Buffer to parse as miniSEED
* @param[in] maxreclen Maximum length to search in buffer
* @param[in] details Controls diagnostic output as follows:
* @parblock
* - \c 0 - only print error messages for invalid header fields
* - \c 1 - print basic fields in addition to invalid field errors
* - \c 2 - print all fields in addition to invalid field errors
* @endparblock
*
* @returns 0 when no errors were detected or a positive count of
* errors detected.
*
* \ref MessageOnError - this function logs a message on error
***************************************************************************/
int
ms_parse_raw3 (const char *record, int maxreclen, int8_t details)
{
MS3Record msr;
const char *X;
uint8_t b;
int retval = 0;
int8_t swapflag;
uint8_t sidlength;
char *sid = NULL;
if (!record)
{
ms_log (2, "%s(): Required input not defined: 'record'\n", __func__);
return 1;
}
if (maxreclen < MINRECLEN)
{
ms_log (2, "%s(): The maxreclen value cannot be smaller than MINRECLEN\n",
__func__);
return 1;
}
swapflag = (ms_bigendianhost()) ? 1 : 0;
if (details > 1)
{
if (swapflag == 1)
ms_log (0, "Swapping multi-byte quantities in header\n");
else
ms_log (0, "Not swapping multi-byte quantities in header\n");
}
sidlength = *pMS3FSDH_SIDLENGTH(record);
/* Check if source identifier length is unreasonably small */
if (sidlength < 4)
{
ms_log (2, "Unlikely source identifier length: '%d'\n", sidlength);
return 1;
}
/* Make sure buffer contains the identifier */
if ((MS3FSDH_LENGTH + sidlength) > maxreclen)
{
ms_log (2, "Not enough buffer contain the identifer: '%d'\n", maxreclen);
return 1;
}
sid = pMS3FSDH_SID(record);
/* Validate fixed section header fields */
X = record; /* Pointer of convenience */
/* Check record indicator == 'MS' */
if (*(X) != 'M' || *(X + 1) != 'S')
{
ms_log (2, "%.*s: Invalid miniSEED 3 record indicator: '%c%c'\n",
sidlength, sid, *(X), *(X + 1));
retval++;
}
/* Check data format == 3 */
if (((uint8_t)*(X + 2)) != 3)
{
ms_log (2, "%.*s: Invalid miniSEED format version: '%d'\n",
sidlength, sid, (uint8_t)*(X + 2));
retval++;
}
/* Check start time fields */
if (HO2u(*pMS3FSDH_YEAR (record), swapflag) < 1900 || HO2u(*pMS3FSDH_YEAR (record), swapflag) > 2100)
{
ms_log (2, "%.*s: Unlikely start year (1900-2100): '%d'\n",
sidlength, sid, HO2u(*pMS3FSDH_YEAR (record), swapflag));
retval++;
}
if (HO2u(*pMS3FSDH_DAY (record), swapflag) < 1 || HO2u(*pMS3FSDH_DAY (record), swapflag) > 366)
{
ms_log (2, "%.*s: Invalid start day (1-366): '%d'\n",
sidlength, sid, HO2u(*pMS3FSDH_DAY (record), swapflag));
retval++;
}
if (*pMS3FSDH_HOUR (record) > 23)
{
ms_log (2, "%.*s: Invalid start hour (0-23): '%d'\n",
sidlength, sid, *pMS3FSDH_HOUR (record));
retval++;
}
if (*pMS3FSDH_MIN (record) > 59)
{
ms_log (2, "%.*s: Invalid start minute (0-59): '%d'\n",
sidlength, sid, *pMS3FSDH_MIN (record));
retval++;
}
if (*pMS3FSDH_SEC (record) > 60)
{
ms_log (2, "%.*s: Invalid start second (0-60): '%d'\n",
sidlength, sid, *pMS3FSDH_SEC (record));
retval++;
}
if (HO4u(*pMS3FSDH_NSEC (record), swapflag) > 999999999)
{
ms_log (2, "%.*s: Invalid start nanoseconds (0-999999999): '%u'\n",
sidlength, sid, HO4u(*pMS3FSDH_NSEC (record), swapflag));
retval++;
}
/* Print raw header details */
if (details >= 1)
{
/* Print header values */
ms_log (0, "RECORD -- %.*s\n", sidlength, sid);
ms_log (0, " record indicator: '%c%c'\n",
pMS3FSDH_INDICATOR (record)[0], pMS3FSDH_INDICATOR (record)[1]);
/* Flags */
b = *pMS3FSDH_FLAGS (record);
ms_log (0, " activity flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
if (details > 1)
{
if (b & 0x01)
ms_log (0, " [Bit 0] Calibration signals present\n");
if (b & 0x02)
ms_log (0, " [Bit 1] Time tag questionable\n");
if (b & 0x04)
ms_log (0, " [Bit 2] Clock locked\n");
if (b & 0x08)
ms_log (0, " [Bit 3] Undefined bit set\n");
if (b & 0x10)
ms_log (0, " [Bit 4] Undefined bit set\n");
if (b & 0x20)
ms_log (0, " [Bit 5] Undefined bit set\n");
if (b & 0x40)
ms_log (0, " [Bit 6] Undefined bit set\n");
if (b & 0x80)
ms_log (0, " [Bit 7] Undefined bit set\n");
}
ms_log (0, " start time: %u,%u,%u:%u:%u.%09u\n",
HO2u(*pMS3FSDH_YEAR (record), swapflag),
HO2u(*pMS3FSDH_DAY (record), swapflag),
*pMS3FSDH_HOUR (record),
*pMS3FSDH_MIN (record),
*pMS3FSDH_SEC (record),
HO4u(*pMS3FSDH_NSEC (record), swapflag));
ms_log (0, " sample rate+/period-: %g\n", HO8f(*pMS3FSDH_SAMPLERATE (record), swapflag));
ms_log (0, " data encoding: %u\n", *pMS3FSDH_ENCODING (record));
ms_log (0, " publication version: %u\n", *pMS3FSDH_PUBVERSION (record));
ms_log (0, " number of samples: %u\n", HO4u(*pMS3FSDH_NUMSAMPLES (record), swapflag));
ms_log (0, " CRC: 0x%X\n", HO4u(*pMS3FSDH_CRC (record), swapflag));
ms_log (0, " length of identifier: %u\n", *pMS3FSDH_SIDLENGTH (record));
ms_log (0, "length of extra headers: %u\n", HO2u(*pMS3FSDH_EXTRALENGTH (record), swapflag));
ms_log (0, " length of data payload: %u\n", HO4u(*pMS3FSDH_DATALENGTH (record), swapflag));
} /* Done printing raw header details */
/* Print extra headers */
msr.extralength = HO2u(*pMS3FSDH_EXTRALENGTH (record), swapflag);
if (details > 1 && msr.extralength > 0)
{
ms_log (0, " extra headers:\n");
if ((MS3FSDH_LENGTH + sidlength + msr.extralength) <= maxreclen)
{
msr.extra = (char *)record + MS3FSDH_LENGTH + sidlength;
mseh_print (&msr, 10);
}
else
{
ms_log (0, " [buffer does not contain extra headers]\n");
}
}
return retval;
} /* End of ms_parse_raw3() */
/**********************************************************************/ /**
* @brief Parse and verify a miniSEED 2.x record header
*
* Parsing is done at the lowest level, printing error messages for
* invalid header values and optionally print raw header values.
*
* The buffer \a record is assumed to be a miniSEED record. Not every
* possible test is performed, common errors and those causing
* libmseed parsing to fail should be detected.
*
* This routine is primarily intended to diagnose invalid miniSEED headers.
*
* @param[in] record Buffer to parse as miniSEED
* @param[in] maxreclen Maximum length to search in buffer
* @param[in] details Controls diagnostic output as follows:
* @parblock
* - \c 0 - only print error messages for invalid header fields
* - \c 1 - print basic fields in addition to invalid field errors
* - \c 2 - print all fields in addition to invalid field errors
* @endparblock
* @param[in] swapflag Flag controlling byte-swapping as follows:
* @parblock
* - \c 1 - swap multibyte quantities
* - \c 0 - do not swap
* - \c -1 - autodetect byte order using year test, swap if needed
* @endparblock
*
* @returns 0 when no errors were detected or a positive count of
* errors detected.
*
* \ref MessageOnError - this function logs a message on error
***************************************************************************/
int
ms_parse_raw2 (const char *record, int maxreclen, int8_t details, int8_t swapflag)
{
double nomsamprate;
char sid[LM_SIDLEN] = {0};
const char *X;
uint8_t b;
int retval = 0;
int b1000encoding = -1;
int b1000reclen = -1;
int endofblockettes = -1;
int idx;
if (!record)
{
ms_log (2, "%s(): Required input not defined: 'record'\n", __func__);
return 1;
}
if (maxreclen < 48)
{
ms_log (2, "%s(): The maxreclen value cannot be smaller than 48\n", __func__);
return 1;
}
/* Build source identifier for this record */
ms2_recordsid (record, sid, sizeof (sid));
/* Check to see if byte swapping is needed by testing the year and day */
if (swapflag == -1 && !MS_ISVALIDYEARDAY (*pMS2FSDH_YEAR (record), *pMS2FSDH_DAY (record)))
swapflag = 1;
else
swapflag = 0;
if (details > 1)
{
if (swapflag == 1)
ms_log (0, "Swapping multi-byte quantities in header\n");
else
ms_log (0, "Not swapping multi-byte quantities in header\n");
}
/* Validate fixed section header fields */
X = record; /* Pointer of convenience */
/* Check record sequence number, 6 ASCII digits */
if (!isdigit ((int)*(X)) || !isdigit ((int)*(X + 1)) ||
!isdigit ((int)*(X + 2)) || !isdigit ((int)*(X + 3)) ||
!isdigit ((int)*(X + 4)) || !isdigit ((int)*(X + 5)))
{
ms_log (2, "%s: Invalid sequence number: '%c%c%c%c%c%c'\n",
sid, *X, *(X + 1), *(X + 2), *(X + 3), *(X + 4), *(X + 5));
retval++;
}
/* Check header data/quality indicator */
if (!MS2_ISDATAINDICATOR (*(X + 6)))
{
ms_log (2, "%s: Invalid header indicator (DRQM): '%c'\n", sid, *(X + 6));
retval++;
}
/* Check reserved byte, space or NULL */
if (!(*(X + 7) == ' ' || *(X + 7) == '\0'))
{
ms_log (2, "%s: Invalid fixed section reserved byte (space): '%c'\n", sid, *(X + 7));
retval++;
}
/* Check station code, 5 alphanumerics or spaces */
if (!(isalnum ((unsigned char)*(X + 8)) || *(X + 8) == ' ') ||
!(isalnum ((unsigned char)*(X + 9)) || *(X + 9) == ' ') ||
!(isalnum ((unsigned char)*(X + 10)) || *(X + 10) == ' ') ||
!(isalnum ((unsigned char)*(X + 11)) || *(X + 11) == ' ') ||
!(isalnum ((unsigned char)*(X + 12)) || *(X + 12) == ' '))
{
ms_log (2, "%s: Invalid station code: '%c%c%c%c%c'\n",
sid, *(X + 8), *(X + 9), *(X + 10), *(X + 11), *(X + 12));
retval++;
}
/* Check location ID, 2 alphanumerics or spaces */
if (!(isalnum ((unsigned char)*(X + 13)) || *(X + 13) == ' ') ||
!(isalnum ((unsigned char)*(X + 14)) || *(X + 14) == ' '))
{
ms_log (2, "%s: Invalid location ID: '%c%c'\n", sid, *(X + 13), *(X + 14));
retval++;
}
/* Check channel codes, 3 alphanumerics or spaces */
if (!(isalnum ((unsigned char)*(X + 15)) || *(X + 15) == ' ') ||
!(isalnum ((unsigned char)*(X + 16)) || *(X + 16) == ' ') ||
!(isalnum ((unsigned char)*(X + 17)) || *(X + 17) == ' '))
{
ms_log (2, "%s: Invalid channel codes: '%c%c%c'\n", sid, *(X + 15), *(X + 16), *(X + 17));
retval++;
}
/* Check network code, 2 alphanumerics or spaces */
if (!(isalnum ((unsigned char)*(X + 18)) || *(X + 18) == ' ') ||
!(isalnum ((unsigned char)*(X + 19)) || *(X + 19) == ' '))
{
ms_log (2, "%s: Invalid network code: '%c%c'\n", sid, *(X + 18), *(X + 19));
retval++;
}
/* Check start time fields */
if (HO2u(*pMS2FSDH_YEAR (record), swapflag) < 1900 || HO2u(*pMS2FSDH_YEAR (record), swapflag) > 2100)
{
ms_log (2, "%s: Unlikely start year (1900-2100): '%d'\n", sid, HO2u(*pMS2FSDH_YEAR (record), swapflag));
retval++;
}
if (HO2u(*pMS2FSDH_DAY (record), swapflag) < 1 || HO2u(*pMS2FSDH_DAY (record), swapflag) > 366)
{
ms_log (2, "%s: Invalid start day (1-366): '%d'\n", sid, HO2u(*pMS2FSDH_DAY (record), swapflag));
retval++;
}
if (*pMS2FSDH_HOUR (record) > 23)
{
ms_log (2, "%s: Invalid start hour (0-23): '%d'\n", sid, *pMS2FSDH_HOUR (record));
retval++;
}
if (*pMS2FSDH_MIN (record) > 59)
{
ms_log (2, "%s: Invalid start minute (0-59): '%d'\n", sid, *pMS2FSDH_MIN (record));
retval++;
}
if (*pMS2FSDH_SEC (record) > 60)
{
ms_log (2, "%s: Invalid start second (0-60): '%d'\n", sid, *pMS2FSDH_SEC (record));
retval++;
}
if (HO2u(*pMS2FSDH_FSEC (record), swapflag) > 9999)
{
ms_log (2, "%s: Invalid start fractional seconds (0-9999): '%d'\n", sid, HO2u(*pMS2FSDH_FSEC (record), swapflag));
retval++;
}
/* Check number of samples, max samples in 4096-byte Steim-2 encoded record: 6601 */
if (HO2u(*pMS2FSDH_NUMSAMPLES(record), swapflag) > 20000)
{
ms_log (2, "%s: Unlikely number of samples (>20000): '%d'\n",
sid, HO2u(*pMS2FSDH_NUMSAMPLES(record), swapflag));
retval++;
}
/* Sanity check that there is space for blockettes when both data and blockettes are present */
if (HO2u(*pMS2FSDH_NUMSAMPLES(record), swapflag) > 0 &&
*pMS2FSDH_NUMBLOCKETTES(record) > 0 &&
HO2u(*pMS2FSDH_DATAOFFSET(record), swapflag) <= HO2u(*pMS2FSDH_BLOCKETTEOFFSET(record), swapflag))
{
ms_log (2, "%s: No space for %d blockettes, data offset: %d, blockette offset: %d\n", sid,
*pMS2FSDH_NUMBLOCKETTES(record),
HO2u(*pMS2FSDH_DATAOFFSET(record), swapflag),
HO2u(*pMS2FSDH_BLOCKETTEOFFSET(record), swapflag));
retval++;
}
/* Print raw header details */
if (details >= 1)
{
/* Determine nominal sample rate */
nomsamprate = ms_nomsamprate (HO2d(*pMS2FSDH_SAMPLERATEFACT (record), swapflag),
HO2d(*pMS2FSDH_SAMPLERATEMULT (record), swapflag));
/* Print header values */
ms_log (0, "RECORD -- %s\n", sid);
ms_log (0, " sequence number: '%c%c%c%c%c%c'\n",
pMS2FSDH_SEQNUM (record)[0], pMS2FSDH_SEQNUM (record)[1],
pMS2FSDH_SEQNUM (record)[2], pMS2FSDH_SEQNUM (record)[3],
pMS2FSDH_SEQNUM (record)[4], pMS2FSDH_SEQNUM (record)[5]);
ms_log (0, " data quality indicator: '%c'\n", *pMS2FSDH_DATAQUALITY (record));
if (details > 0)
ms_log (0, " reserved: '%c'\n", *pMS2FSDH_RESERVED (record));
ms_log (0, " station code: '%c%c%c%c%c'\n",
pMS2FSDH_STATION (record)[0], pMS2FSDH_STATION (record)[1],
pMS2FSDH_STATION (record)[2], pMS2FSDH_STATION (record)[3], pMS2FSDH_STATION (record)[4]);
ms_log (0, " location ID: '%c%c'\n",
pMS2FSDH_LOCATION (record)[0], pMS2FSDH_LOCATION (record)[1]);
ms_log (0, " channel codes: '%c%c%c'\n",
pMS2FSDH_CHANNEL (record)[0], pMS2FSDH_CHANNEL (record)[1], pMS2FSDH_CHANNEL (record)[2]);
ms_log (0, " network code: '%c%c'\n",
pMS2FSDH_NETWORK (record)[0], pMS2FSDH_NETWORK (record)[1]);
ms_log (0, " start time: %d,%d,%d:%d:%d.%04d (unused: %d)\n",
HO2u(*pMS2FSDH_YEAR (record), swapflag),
HO2u(*pMS2FSDH_DAY (record), swapflag),
*pMS2FSDH_HOUR (record),
*pMS2FSDH_MIN (record),
*pMS2FSDH_SEC (record),
HO2u(*pMS2FSDH_FSEC (record), swapflag),
*pMS2FSDH_UNUSED (record));
ms_log (0, " number of samples: %d\n", HO2u(*pMS2FSDH_NUMSAMPLES (record), swapflag));
ms_log (0, " sample rate factor: %d (%.10g samples per second)\n",
HO2d(*pMS2FSDH_SAMPLERATEFACT (record), swapflag), nomsamprate);
ms_log (0, " sample rate multiplier: %d\n", HO2d(*pMS2FSDH_SAMPLERATEMULT (record), swapflag));
/* Print flag details if requested */
if (details > 1)
{
/* Activity flags */
b = *pMS2FSDH_ACTFLAGS (record);
ms_log (0, " activity flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
if (b & 0x01)
ms_log (0, " [Bit 0] Calibration signals present\n");
if (b & 0x02)
ms_log (0, " [Bit 1] Time correction applied\n");
if (b & 0x04)
ms_log (0, " [Bit 2] Beginning of an event, station trigger\n");
if (b & 0x08)
ms_log (0, " [Bit 3] End of an event, station detrigger\n");
if (b & 0x10)
ms_log (0, " [Bit 4] A positive leap second happened in this record\n");
if (b & 0x20)
ms_log (0, " [Bit 5] A negative leap second happened in this record\n");
if (b & 0x40)
ms_log (0, " [Bit 6] Event in progress\n");
if (b & 0x80)
ms_log (0, " [Bit 7] Undefined bit set\n");
/* I/O and clock flags */
b = *pMS2FSDH_IOFLAGS (record);
ms_log (0, " I/O and clock flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
if (b & 0x01)
ms_log (0, " [Bit 0] Station volume parity error possibly present\n");
if (b & 0x02)
ms_log (0, " [Bit 1] Long record read (possibly no problem)\n");
if (b & 0x04)
ms_log (0, " [Bit 2] Short record read (record padded)\n");
if (b & 0x08)
ms_log (0, " [Bit 3] Start of time series\n");
if (b & 0x10)
ms_log (0, " [Bit 4] End of time series\n");
if (b & 0x20)
ms_log (0, " [Bit 5] Clock locked\n");
if (b & 0x40)
ms_log (0, " [Bit 6] Undefined bit set\n");
if (b & 0x80)
ms_log (0, " [Bit 7] Undefined bit set\n");
/* Data quality flags */
b = *pMS2FSDH_DQFLAGS (record);
ms_log (0, " data quality flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
if (b & 0x01)
ms_log (0, " [Bit 0] Amplifier saturation detected\n");
if (b & 0x02)
ms_log (0, " [Bit 1] Digitizer clipping detected\n");
if (b & 0x04)
ms_log (0, " [Bit 2] Spikes detected\n");
if (b & 0x08)
ms_log (0, " [Bit 3] Glitches detected\n");
if (b & 0x10)
ms_log (0, " [Bit 4] Missing/padded data present\n");
if (b & 0x20)
ms_log (0, " [Bit 5] Telemetry synchronization error\n");
if (b & 0x40)
ms_log (0, " [Bit 6] A digital filter may be charging\n");
if (b & 0x80)
ms_log (0, " [Bit 7] Time tag is questionable\n");
}
ms_log (0, " number of blockettes: %d\n", *pMS2FSDH_NUMBLOCKETTES (record));
ms_log (0, " time correction: %ld\n", (long int)HO4d(*pMS2FSDH_TIMECORRECT (record), swapflag));
ms_log (0, " data offset: %d\n", HO2u(*pMS2FSDH_DATAOFFSET (record), swapflag));
ms_log (0, " first blockette offset: %d\n", HO2u(*pMS2FSDH_BLOCKETTEOFFSET (record), swapflag));
} /* Done printing raw header details */
/* Validate and report information in the blockette chain */
if (HO2u(*pMS2FSDH_BLOCKETTEOFFSET (record), swapflag) > 46 &&
HO2u(*pMS2FSDH_BLOCKETTEOFFSET (record), swapflag) < maxreclen)
{
int blkt_offset = HO2u(*pMS2FSDH_BLOCKETTEOFFSET (record), swapflag);
int blkt_count = 0;
int blkt_length;
uint16_t blkt_type;
uint16_t next_blkt;
const char *blkt_desc;
/* Traverse blockette chain */
while (blkt_offset != 0 && blkt_offset < maxreclen)
{
/* Every blockette has a similar 4 byte header: type and next */
memcpy (&blkt_type, record + blkt_offset, 2);
memcpy (&next_blkt, record + blkt_offset + 2, 2);
if (swapflag)
{
ms_gswap2 (&blkt_type);
ms_gswap2 (&next_blkt);
}
/* Print common header fields */
if (details >= 1)
{
blkt_desc = ms2_blktdesc (blkt_type);
ms_log (0, " BLOCKETTE %u: (%s)\n", blkt_type, (blkt_desc) ? blkt_desc : "Unknown");
ms_log (0, " next blockette: %u\n", next_blkt);
}
blkt_length = ms2_blktlen (blkt_type, record + blkt_offset, swapflag);
if (blkt_length == 0)
{
ms_log (2, "%s: Unknown blockette length for type %d\n", sid, blkt_type);
retval++;
}
/* Track end of blockette chain */
endofblockettes = blkt_offset + blkt_length - 1;
/* Sanity check that the blockette is contained in the record */
if (endofblockettes > maxreclen)
{
ms_log (2, "%s: Blockette type %d at offset %d with length %d does not fit in record (%d)\n",
sid, blkt_type, blkt_offset, blkt_length, maxreclen);
retval++;
break;
}
if (blkt_type == 100)
{
if (details >= 1)
{
ms_log (0, " actual sample rate: %.10g\n",
HO4f(*pMS2B100_SAMPRATE(record + blkt_offset), swapflag));
if (details > 1)
{
b = *pMS2B100_FLAGS(record + blkt_offset);
ms_log (0, " undefined flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
ms_log (0, " reserved bytes (3): %u,%u,%u\n",
pMS2B100_RESERVED(record + blkt_offset)[0],
pMS2B100_RESERVED(record + blkt_offset)[1],
pMS2B100_RESERVED(record + blkt_offset)[2]);
}
}
}
else if (blkt_type == 200)
{
if (details >= 1)
{
ms_log (0, " signal amplitude: %g\n", HO4f(*pMS2B200_AMPLITUDE(record + blkt_offset), swapflag));
ms_log (0, " signal period: %g\n", HO4f(*pMS2B200_PERIOD(record + blkt_offset), swapflag));
ms_log (0, " background estimate: %g\n", HO4f(*pMS2B200_BACKGROUNDEST(record + blkt_offset), swapflag));
if (details > 1)
{
b = *pMS2B200_FLAGS(record + blkt_offset);
ms_log (0, " event detection flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
if (b & 0x01)
ms_log (0, " [Bit 0] 1: Dilatation wave\n");
else
ms_log (0, " [Bit 0] 0: Compression wave\n");
if (b & 0x02)
ms_log (0, " [Bit 1] 1: Units after deconvolution\n");
else
ms_log (0, " [Bit 1] 0: Units are digital counts\n");
if (b & 0x04)
ms_log (0, " [Bit 2] Bit 0 is undetermined\n");
ms_log (0, " reserved byte: %u\n", *pMS2B200_RESERVED (record + blkt_offset));
}
ms_log (0, " signal onset time: %d,%d,%d:%d:%d.%04d (unused: %d)\n",
HO2u(*pMS2B200_YEAR (record + blkt_offset), swapflag),
HO2u(*pMS2B200_DAY (record + blkt_offset), swapflag),
*pMS2B200_HOUR (record + blkt_offset),
*pMS2B200_MIN (record + blkt_offset),
*pMS2B200_SEC (record + blkt_offset),
HO2u(*pMS2B200_FSEC (record + blkt_offset), swapflag),
*pMS2B200_UNUSED (record + blkt_offset));
ms_log (0, " detector name: %.24s\n", pMS2B200_DETECTOR (record + blkt_offset));
}
}
else if (blkt_type == 201)
{
if (details >= 1)
{
ms_log (0, " signal amplitude: %g\n", HO4f(*pMS2B201_AMPLITUDE(record + blkt_offset), swapflag));
ms_log (0, " signal period: %g\n", HO4f(*pMS2B201_PERIOD(record + blkt_offset), swapflag));
ms_log (0, " background estimate: %g\n", HO4f(*pMS2B201_BACKGROUNDEST(record + blkt_offset), swapflag));
b = *pMS2B201_FLAGS(record + blkt_offset);
ms_log (0, " event detection flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
if (b & 0x01)
ms_log (0, " [Bit 0] 1: Dilation wave\n");
else
ms_log (0, " [Bit 0] 0: Compression wave\n");
if (details > 1)
ms_log (0, " reserved byte: %u\n", *pMS2B201_RESERVED(record + blkt_offset));
ms_log (0, " signal onset time: %d,%d,%d:%d:%d.%04d (unused: %d)\n",
HO2u(*pMS2B201_YEAR (record + blkt_offset), swapflag),
HO2u(*pMS2B201_DAY (record + blkt_offset), swapflag),
*pMS2B201_HOUR (record + blkt_offset),
*pMS2B201_MIN (record + blkt_offset),
*pMS2B201_SEC (record + blkt_offset),
HO2u(*pMS2B201_FSEC (record + blkt_offset), swapflag),
*pMS2B201_UNUSED (record + blkt_offset));
ms_log (0, " SNR values: ");
for (idx = 0; idx < 6; idx++)
ms_log (0, "%u ", pMS2B201_MEDSNR (record + blkt_offset)[idx]);
ms_log (0, "\n");
ms_log (0, " loopback value: %u\n", *pMS2B201_LOOPBACK (record + blkt_offset));
ms_log (0, " pick algorithm: %u\n", *pMS2B201_PICKALGORITHM (record + blkt_offset));
ms_log (0, " detector name: %.24s\n", pMS2B201_DETECTOR (record + blkt_offset));
}
}
else if (blkt_type == 300)
{
if (details >= 1)
{
ms_log (0, " calibration start time: %d,%d,%d:%d:%d.%04d (unused: %d)\n",
HO2u(*pMS2B300_YEAR (record + blkt_offset), swapflag),
HO2u(*pMS2B300_DAY (record + blkt_offset), swapflag),
*pMS2B300_HOUR (record + blkt_offset),
*pMS2B300_MIN (record + blkt_offset),
*pMS2B300_SEC (record + blkt_offset),
HO2u(*pMS2B300_FSEC (record + blkt_offset), swapflag),
*pMS2B300_UNUSED (record + blkt_offset));
ms_log (0, " number of calibrations: %u\n", *pMS2B300_NUMCALIBRATIONS (record + blkt_offset));
b = *pMS2B300_FLAGS (record + blkt_offset);
ms_log (0, " calibration flags: [%d%d%d%d%d%d%d%d] 8 bits\n",
bit (b, 0x80), bit (b, 0x40), bit (b, 0x20), bit (b, 0x10),
bit (b, 0x08), bit (b, 0x04), bit (b, 0x02), bit (b, 0x01));
if (b & 0x01)
ms_log (0, " [Bit 0] First pulse is positive\n");
if (b & 0x02)
ms_log (0, " [Bit 1] Calibration's alternate sign\n");
if (b & 0x04)
ms_log (0, " [Bit 2] Calibration was automatic\n");
if (b & 0x08)
ms_log (0, " [Bit 3] Calibration continued from previous record(s)\n");
ms_log (0, " step duration: %u\n", HO4u(*pMS2B300_STEPDURATION (record + blkt_offset), swapflag));
ms_log (0, " interval duration: %u\n", HO4u(*pMS2B300_INTERVALDURATION (record + blkt_offset), swapflag));
ms_log (0, " signal amplitude: %g\n", HO4f(*pMS2B300_AMPLITUDE (record + blkt_offset), swapflag));
ms_log (0, " input signal channel: %.3s\n", pMS2B300_INPUTCHANNEL (record + blkt_offset));
if (details > 1)
ms_log (0, " reserved byte: %u\n", *pMS2B300_RESERVED (record + blkt_offset));
ms_log (0, " reference amplitude: %u\n", HO4u(*pMS2B300_REFERENCEAMPLITUDE (record + blkt_offset), swapflag));
ms_log (0, " coupling: %.12s\n", pMS2B300_COUPLING (record + blkt_offset));
ms_log (0, " rolloff: %.12s\n", pMS2B300_ROLLOFF (record + blkt_offset));
}
}
else if (blkt_type == 310)
{
if (details >= 1)
{
ms_log (0, " calibration start time: %d,%d,%d:%d:%d.%04d (unused: %d)\n",
HO2u(*pMS2B310_YEAR (record + blkt_offset), swapflag),
HO2u(*pMS2B310_DAY (record + blkt_offset), swapflag),
*pMS2B310_HOUR (record + blkt_offset),
*pMS2B310_MIN (record + blkt_offset),
*pMS2B310_SEC (record + blkt_offset),
HO2u(*pMS2B310_FSEC (record + blkt_offset), swapflag),
*pMS2B310_UNUSED (record + blkt_offset));
if (details > 1)
ms_log (0, " reserved byte: %u\n", *pMS2B310_RESERVED1 (record + blkt_offset));