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subsurface/core/datatrak.c
Linus Torvalds 6c4e890960 Clean up divecomputer 'device' handling 
We have this odd legacy notion of a divecomputer 'device', that was
originally just basically the libdivecomputer 'EVENT_DEVINFO' report
that was associated with each dive.  So it had firmware version,
deviceid, and serial number.

It had also gotten extended to do 'nickname' handling, and it was all
confusing, ugly and bad.  It was particularly bad because it wasn't
actually a 'per device' thing at all: due to the firmware field, a dive
computer that got a firmware update forced a new 'device'.

To make matters worse, the 'deviceid' was also almost random, because
we've calculated it a couple of different ways, and libdivecomputer
itself has changed how the legacy 32-bit 'serial number' is expressed.

Finally, because of all these issues, we didn't even try to make the
thing unique, so it really ended up being a random snapshot of the state
of the dive computer at the time of a dive, and sometimes we'd pick one,
and sometimes another, since they weren't really well-defined.

So get rid of all this confusion.

The new rules:

 - the actual random dive computer state at the time of a dive is kept
   in the dive data. So if you want to know the firmware version, it
   should be in the 'extra data'

 - the only serial number that matters is the string one in the extra
   data, because that's the one that actually matches what the dive
   computer reports, and isn't some random 32-bit integer with ambiguous
   formatting.

 - the 'device id' - the thing we match with (together with the model
   name, eg "Suunto EON Steel") is purely a hash of the real serial
   number.

   The device ID that libdivecomputer reports in EVENT_DEVINFO is
   ignored, as is the device ID we've saved in the XML or git files. If
   we have a serial number, the device ID will be uniquely associated
   with that serial number, and if we don't have one, the device ID will
   be zero (for 'match anything').

   So now 'deviceid' is literally just a shorthand for the serial number
   string, and the two are joined at the hip.

 - the 'device' managament is _only_ used to track devices that have
   serial numbers _and_ nicknames. So no more different device
   structures just because one had a nickname and the other didn't etc.

   Without a serial number, the device is 'anonymous' and fundamentally
   cannot be distinguished from other devices of the same model, so a
   nickname is meaningless. And without a nickname, there is no point in
   creating a device data structure, since all the data is in the dive
   itself and the device structure wouldn't add any value..

These rules mean that we no longer have ambiguous 'device' structures,
and we can never have duplicates that can confuse us.

This does mean that you can't give a nickname to a device that cannot be
uniquely identified with a serial number, but those are happily fairly
rare (and mostly older ones).  Dirk said he'd look at what it takes to
give more dive computers proper serial numbers, and I already did it for
the Garmin Descent family yesterday.

(Honesty in advertizing: right now you can't add a nickname to a dive
computer that doesn't already have one, because such a dive computer
will not have a device structure.  But that's a UI issue, and I'll sort
that out separately)

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-08-18 13:22:02 -07:00

734 lines
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// SPDX-License-Identifier: GPL-2.0
#ifdef __clang__
// Clang has a bug on zero-initialization of C structs.
#pragma clang diagnostic ignored "-Wmissing-field-initializers"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <time.h>
#include "gettext.h"
#include "datatrak.h"
#include "subsurface-string.h"
#include "units.h"
#include "device.h"
#include "file.h"
#include "divesite.h"
#include "dive.h"
#include "errorhelper.h"
#include "ssrf.h"
#include "tag.h"
static unsigned int two_bytes_to_int(unsigned char x, unsigned char y)
{
return (x << 8) + y;
}
static unsigned long four_bytes_to_long(unsigned char x, unsigned char y, unsigned char z, unsigned char t)
{
return ((long)x << 24) + ((long)y << 16) + ((long)z << 8) + (long)t;
}
static bool bit_set(unsigned char byte, int bit)
{
return byte & (1 << bit);
}
/*
* Datatrak stores the date in days since 01-01-1600, while Subsurface uses
* time_t (seconds since 00:00 01-01-1970). Function subtracts
* (1970 - 1600) * 365,2425 = 135139,725 to our date variable, getting the
* days since Epoch.
*/
static time_t date_time_to_ssrfc(unsigned long date, int time)
{
time_t tmp;
tmp = (date - 135140) * 86400 + time * 60;
return tmp;
}
static unsigned char to_8859(unsigned char char_cp850)
{
static const unsigned char char_8859[46] = { 0xc7, 0xfc, 0xe9, 0xe2, 0xe4, 0xe0, 0xe5, 0xe7,
0xea, 0xeb, 0xe8, 0xef, 0xee, 0xec, 0xc4, 0xc5,
0xc9, 0xe6, 0xc6, 0xf4, 0xf6, 0xf2, 0xfb, 0xf9,
0xff, 0xd6, 0xdc, 0xf8, 0xa3, 0xd8, 0xd7, 0x66,
0xe1, 0xed, 0xf3, 0xfa, 0xf1, 0xd1, 0xaa, 0xba,
0xbf, 0xae, 0xac, 0xbd, 0xbc, 0xa1 };
return char_8859[char_cp850 - 0x80];
}
static char *to_utf8(unsigned char *in_string)
{
int outlen, inlen, i = 0, j = 0;
inlen = strlen((char *)in_string);
outlen = inlen * 2 + 1;
char *out_string = calloc(outlen, 1);
for (i = 0; i < inlen; i++) {
if (in_string[i] < 127) {
out_string[j] = in_string[i];
} else {
if (in_string[i] > 127 && in_string[i] <= 173)
in_string[i] = to_8859(in_string[i]);
out_string[j] = (in_string[i] >> 6) | 0xC0;
j++;
out_string[j] = (in_string[i] & 0x3F) | 0x80;
}
j++;
}
out_string[j + 1] = '\0';
return out_string;
}
/*
* Reads the header of a datatrak buffer and returns the number of
* dives; zero on error (meaning this isn't a datatrak file).
* All other info in the header is useless for Subsurface.
*/
static int read_file_header(unsigned char *buffer)
{
int n = 0;
if (two_bytes_to_int(buffer[0], buffer[1]) == 0xA100)
n = two_bytes_to_int(buffer[7], buffer[6]);
return n;
}
/*
* Fills a device_data_t structure based on the info from g_models table, using
* the dc's model number as start point.
* Returns libdc's equivalent model number (also from g_models) or zero if
* this a manual dive.
*/
static int dtrak_prepare_data(int model, device_data_t *dev_data)
{
dc_descriptor_t *d = NULL;
int i = 0;
while (model != g_models[i].model_num && g_models[i].model_num != 0xEE)
i++;
dev_data->model = copy_string(g_models[i].name);
dev_data->vendor = (const char *)malloc(strlen(g_models[i].name) + 1);
sscanf(g_models[i].name, "%[A-Za-z] ", (char *)dev_data->vendor);
dev_data->product = copy_string(strchr(g_models[i].name, ' ') + 1);
d = get_descriptor(g_models[i].type, g_models[i].libdc_num);
if (d)
dev_data->descriptor = d;
else
return 0;
return g_models[i].libdc_num;
}
/*
* Return a default name for a tank based on it's size.
* Just get the first in the user's list for given size.
* Reaching the end of the list means there is no tank of this size.
*/
static const char *cyl_type_by_size(int size)
{
for (int i = 0; i < tank_info_table.nr; ++i) {
const struct tank_info *ti = &tank_info_table.infos[i];
if (ti->ml == size)
return ti->name;
}
return "";
}
/*
* Reads the size of a datatrak profile from actual position in buffer *ptr,
* zero padds it with a faked header and inserts the model number for
* libdivecomputer parsing. Puts the completed buffer in a pre-allocated
* compl_buffer, and returns status.
*/
static dc_status_t dt_libdc_buffer(unsigned char *ptr, int prf_length, int dc_model, unsigned char *compl_buffer)
{
if (compl_buffer == NULL)
return DC_STATUS_NOMEMORY;
compl_buffer[3] = (unsigned char) dc_model;
memcpy(compl_buffer + 18, ptr, prf_length);
return DC_STATUS_SUCCESS;
}
/*
* Parses a mem buffer extracting its data and filling a subsurface's dive structure.
* Returns a pointer to last position in buffer, or NULL on failure.
*/
static unsigned char *dt_dive_parser(unsigned char *runner, struct dive *dt_dive, struct dive_site_table *sites,
struct device_table *devices, long maxbuf)
{
int rc, profile_length, libdc_model;
char *tmp_notes_str = NULL;
unsigned char *tmp_string1 = NULL,
*locality = NULL,
*dive_point = NULL,
*compl_buffer,
*membuf = runner;
char buffer[1024];
unsigned char tmp_1byte;
unsigned int tmp_2bytes;
unsigned long tmp_4bytes;
struct dive_site *ds;
char is_nitrox = 0, is_O2 = 0, is_SCR = 0;
device_data_t *devdata = calloc(1, sizeof(device_data_t));
devdata->sites = sites;
devdata->devices = devices;
/*
* Parse byte to byte till next dive entry
*/
while (membuf[0] != 0xA0 || membuf[1] != 0x00) {
JUMP(membuf, 1);
}
JUMP(membuf, 2);
/*
* Begin parsing
* First, Date of dive, 4 bytes
*/
read_bytes(4);
/*
* Next, Time in minutes since 00:00
*/
read_bytes(2);
dt_dive->dc.when = dt_dive->when = (timestamp_t)date_time_to_ssrfc(tmp_4bytes, tmp_2bytes);
/*
* Now, Locality, 1st byte is long of string, rest is string
*/
read_bytes(1);
read_string(locality);
/*
* Next, Dive point, defined as Locality
*/
read_bytes(1);
read_string(dive_point);
/*
* Subsurface only have a location variable, so we have to merge DTrak's
* Locality and Dive points.
*/
snprintf(buffer, sizeof(buffer), "%s, %s", locality, dive_point);
ds = get_dive_site_by_name(buffer, sites);
if (!ds)
ds = create_dive_site(buffer, sites);
add_dive_to_dive_site(dt_dive, ds);
free(locality);
locality = NULL;
free(dive_point);
/*
* Altitude. Don't exist in Subsurface, the equivalent would be
* surface air pressure which can, be calculated from altitude.
* As dtrak registers altitude intervals, we, arbitrarily, choose
* the lower altitude/pressure equivalence for each segment. So
*
* Datatrak table * Conversion formula:
* *
* byte = 1 0 - 700 m * P = P0 * exp(-(g * M * h ) / (R * T0))
* byte = 2 700 - 1700m * P0 = sealevel pressure = 101325 Pa
* byte = 3 1700 - 2700 m * g = grav. acceleration = 9,80665 m/s²
* byte = 4 2700 - * m * M = molar mass (dry air) = 0,0289644 Kg/mol
* * h = altitude over sea level (m)
* * R = Universal gas constant = 8,31447 J/(mol*K)
* * T0 = sea level standard temperature = 288,15 K
*/
read_bytes(1);
switch (tmp_1byte) {
case 1:
dt_dive->dc.surface_pressure.mbar = 1013;
break;
case 2:
dt_dive->dc.surface_pressure.mbar = 932;
break;
case 3:
dt_dive->dc.surface_pressure.mbar = 828;
break;
case 4:
dt_dive->dc.surface_pressure.mbar = 735;
break;
default:
dt_dive->dc.surface_pressure.mbar = 1013;
}
/*
* Interval (minutes)
*/
read_bytes(2);
if (tmp_2bytes != 0x7FFF)
dt_dive->dc.surfacetime.seconds = (uint32_t) tmp_2bytes * 60;
/*
* Weather, values table, 0 to 6
* Subsurface don't have this record but we can use tags
*/
dt_dive->tag_list = NULL;
read_bytes(1);
switch (tmp_1byte) {
case 1:
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "clear")));
break;
case 2:
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "misty")));
break;
case 3:
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "fog")));
break;
case 4:
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "rain")));
break;
case 5:
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "storm")));
break;
case 6:
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "snow")));
break;
default:
// unknown, do nothing
break;
}
/*
* Air Temperature
*/
read_bytes(2);
if (tmp_2bytes != 0x7FFF)
dt_dive->dc.airtemp.mkelvin = C_to_mkelvin((double)(tmp_2bytes / 100));
/*
* Dive suit, values table, 0 to 6
*/
read_bytes(1);
switch (tmp_1byte) {
case 1:
dt_dive->suit = strdup(QT_TRANSLATE_NOOP("gettextFromC", "No suit"));
break;
case 2:
dt_dive->suit = strdup(QT_TRANSLATE_NOOP("gettextFromC", "Shorty"));
break;
case 3:
dt_dive->suit = strdup(QT_TRANSLATE_NOOP("gettextFromC", "Combi"));
break;
case 4:
dt_dive->suit = strdup(QT_TRANSLATE_NOOP("gettextFromC", "Wet suit"));
break;
case 5:
dt_dive->suit = strdup(QT_TRANSLATE_NOOP("gettextFromC", "Semidry suit"));
break;
case 6:
dt_dive->suit = strdup(QT_TRANSLATE_NOOP("gettextFromC", "Dry suit"));
break;
default:
// unknown, do nothing
break;
}
/*
* Tank, volume size in liter*100. And initialize gasmix to air (default).
* Dtrak doesn't record init and end pressures, but consumed bar, so let's
* init a default pressure of 200 bar.
*/
read_bytes(2);
if (tmp_2bytes != 0x7FFF) {
cylinder_t cyl = empty_cylinder;
cyl.type.size.mliter = tmp_2bytes * 10;
cyl.type.description = cyl_type_by_size(tmp_2bytes * 10);
cyl.start.mbar = 200000;
cyl.gasmix.he.permille = 0;
cyl.gasmix.o2.permille = 210;
cyl.manually_added = true;
add_cloned_cylinder(&dt_dive->cylinders, cyl);
}
/*
* Maximum depth, in cm.
*/
read_bytes(2);
if (tmp_2bytes != 0x7FFF)
dt_dive->maxdepth.mm = dt_dive->dc.maxdepth.mm = (int32_t)tmp_2bytes * 10;
/*
* Dive time in minutes.
*/
read_bytes(2);
if (tmp_2bytes != 0x7FFF)
dt_dive->duration.seconds = dt_dive->dc.duration.seconds = (uint32_t)tmp_2bytes * 60;
/*
* Minimum water temperature in C*100. If unknown, set it to 0K which
* is subsurface's value for "unknown"
*/
read_bytes(2);
if (tmp_2bytes != 0x7fff)
dt_dive->watertemp.mkelvin = dt_dive->dc.watertemp.mkelvin = C_to_mkelvin((double)(tmp_2bytes / 100));
else
dt_dive->watertemp.mkelvin = 0;
/*
* Air used in bar*100.
*/
read_bytes(2);
if (tmp_2bytes != 0x7FFF && dt_dive->cylinders.nr > 0)
get_cylinder(dt_dive, 0)->gas_used.mliter = lrint(get_cylinder(dt_dive, 0)->type.size.mliter * (tmp_2bytes / 100.0));
/*
* Dive Type 1 - Bit table. Subsurface don't have this record, but
* will use tags. Bits 0 and 1 are not used. Reuse coincident tags.
*/
read_bytes(1);
if (bit_set(tmp_1byte, 2))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "no stop")));
if (bit_set(tmp_1byte, 3))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "deco")));
if (bit_set(tmp_1byte, 4))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "single ascent")));
if (bit_set(tmp_1byte, 5))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "multiple ascent")));
if (bit_set(tmp_1byte, 6))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "fresh water")));
if (bit_set(tmp_1byte, 7))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "salt water")));
/*
* Dive Type 2 - Bit table, use tags again
*/
read_bytes(1);
if (bit_set(tmp_1byte, 0)) {
taglist_add_tag(&dt_dive->tag_list, strdup("nitrox"));
is_nitrox = 1;
}
if (bit_set(tmp_1byte, 1)) {
taglist_add_tag(&dt_dive->tag_list, strdup("rebreather"));
is_SCR = 1;
dt_dive->dc.divemode = PSCR;
}
/*
* Dive Activity 1 - Bit table, use tags again
*/
read_bytes(1);
if (bit_set(tmp_1byte, 0))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "sight seeing")));
if (bit_set(tmp_1byte, 1))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "club dive")));
if (bit_set(tmp_1byte, 2))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "instructor")));
if (bit_set(tmp_1byte, 3))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "instruction")));
if (bit_set(tmp_1byte, 4))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "night")));
if (bit_set(tmp_1byte, 5))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "cave")));
if (bit_set(tmp_1byte, 6))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "ice")));
if (bit_set(tmp_1byte, 7))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "search")));
/*
* Dive Activity 2 - Bit table, use tags again
*/
read_bytes(1);
if (bit_set(tmp_1byte, 0))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "wreck")));
if (bit_set(tmp_1byte, 1))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "river")));
if (bit_set(tmp_1byte, 2))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "drift")));
if (bit_set(tmp_1byte, 3))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "photo")));
if (bit_set(tmp_1byte, 4))
taglist_add_tag(&dt_dive->tag_list, strdup(QT_TRANSLATE_NOOP("gettextFromC", "other")));
/*
* Other activities - String 1st byte = long
* Will put this in dive notes before the true notes
*/
read_bytes(1);
if (tmp_1byte != 0) {
read_string(tmp_string1);
snprintf(buffer, sizeof(buffer), "%s: %s\n",
QT_TRANSLATE_NOOP("gettextFromC", "Other activities"),
tmp_string1);
tmp_notes_str = strdup(buffer);
free(tmp_string1);
}
/*
* Dive buddies
*/
read_bytes(1);
if (tmp_1byte != 0) {
read_string(tmp_string1);
dt_dive->buddy = strdup((char *)tmp_string1);
free(tmp_string1);
}
/*
* Dive notes
*/
read_bytes(1);
if (tmp_1byte != 0) {
read_string(tmp_string1);
int len = snprintf(buffer, sizeof(buffer), "%s%s:\n%s",
tmp_notes_str ? tmp_notes_str : "",
QT_TRANSLATE_NOOP("gettextFromC", "Datatrak/Wlog notes"),
tmp_string1);
dt_dive->notes = calloc((len +1), 1);
dt_dive->notes = memcpy(dt_dive->notes, buffer, len);
free(tmp_string1);
}
free(tmp_notes_str);
/*
* Alarms 1 and Alarms2 - Bit tables - Not in Subsurface, we use the profile
*/
JUMP(membuf, 2);
/*
* Dive number (in datatrak, after import user has to renumber)
*/
read_bytes(2);
dt_dive->number = tmp_2bytes;
/*
* Computer timestamp - Useless for Subsurface
*/
JUMP(membuf, 4);
/*
* Model number to check against equivalence with libdivecomputer table.
* The number also defines if the model is nitrox or O2 capable.
*/
read_bytes(1);
switch (tmp_1byte & 0xF0) {
case 0xF0:
is_nitrox = 1;
break;
case 0xA0:
is_O2 = 1;
break;
default:
is_nitrox = 0;
is_O2 = 0;
break;
}
libdc_model = dtrak_prepare_data(tmp_1byte, devdata);
if (!libdc_model)
report_error(translate("gettextFromC", "[Warning] Manual dive # %d\n"), dt_dive->number);
dt_dive->dc.model = copy_string(devdata->model);
/*
* Air usage, unknown use. Probably allows or deny manually entering gas
* comsumption based on dc model - Useless for Subsurface
* And 6 bytes without known use.
*/
JUMP(membuf, 7);
/*
* Profile data length
*/
read_bytes(2);
profile_length = tmp_2bytes;
/*
* Profile parsing, only if we have a profile and a dc model.
* If just a profile, skip parsing and seek the buffer to the end of dive.
*/
if (profile_length != 0 && libdc_model != 0) {
compl_buffer = (unsigned char *) calloc(18 + profile_length, 1);
rc = dt_libdc_buffer(membuf, profile_length, libdc_model, compl_buffer);
if (rc == DC_STATUS_SUCCESS) {
libdc_buffer_parser(dt_dive, devdata, compl_buffer, profile_length + 18);
} else {
report_error(translate("gettextFromC", "[Error] Out of memory for dive %d. Abort parsing."), dt_dive->number);
free(compl_buffer);
goto bail;
}
if (is_nitrox && dt_dive->cylinders.nr > 0)
get_cylinder(dt_dive, 0)->gasmix.o2.permille =
lrint(membuf[23] & 0x0F ? 20.0 + 2 * (membuf[23] & 0x0F) : 21.0) * 10;
if (is_O2 && dt_dive->cylinders.nr > 0)
get_cylinder(dt_dive, 0)->gasmix.o2.permille = membuf[23] * 10;
free(compl_buffer);
}
JUMP(membuf, profile_length);
/*
* Initialize some dive data not supported by Datatrak/WLog
*/
if (!libdc_model)
dt_dive->dc.deviceid = 0;
else
dt_dive->dc.deviceid = 0xffffffff;
dt_dive->dc.next = NULL;
if (!is_SCR && dt_dive->cylinders.nr > 0) {
get_cylinder(dt_dive, 0)->end.mbar = get_cylinder(dt_dive, 0)->start.mbar -
((get_cylinder(dt_dive, 0)->gas_used.mliter / get_cylinder(dt_dive, 0)->type.size.mliter) * 1000);
}
free(devdata);
return membuf;
bail:
free(locality);
free(devdata);
return NULL;
}
/*
* Parses the header of the .add file, returns the number of dives in
* the archive (must be the same than number of dives in .log file).
*/
static int wlog_header_parser (struct memblock *mem)
{
int tmp;
unsigned char *runner = (unsigned char *) mem->buffer;
if (!runner)
return -1;
if (!memcmp(runner, "\x52\x02", 2)) {
runner += 8;
tmp = (int) two_bytes_to_int(runner[1], runner[0]);
return tmp;
} else {
fprintf(stderr, "Error, not a Wlog .add file\n");
return -1;
}
}
#define NOTES_LENGTH 256
#define SUIT_LENGTH 26
static void wlog_compl_parser(struct memblock *wl_mem, struct dive *dt_dive, int dcount)
{
int tmp = 0, offset = 12 + (dcount * 850),
pos_weight = offset + 256,
pos_viz = offset + 258,
pos_tank_init = offset + 266,
pos_suit = offset + 268;
char *wlog_notes = NULL, *wlog_suit = NULL, *buffer = NULL;
unsigned char *runner = (unsigned char *) wl_mem->buffer;
/*
* Extended notes string. Fixed length 256 bytes. 0 padded if not complete
*/
if (*(runner + offset)) {
char wlog_notes_temp[NOTES_LENGTH + 1];
wlog_notes_temp[NOTES_LENGTH] = 0;
(void)memcpy(wlog_notes_temp, runner + offset, NOTES_LENGTH);
wlog_notes = to_utf8((unsigned char *) wlog_notes_temp);
}
if (dt_dive->notes && wlog_notes) {
buffer = calloc (strlen(dt_dive->notes) + strlen(wlog_notes) + 1, 1);
sprintf(buffer, "%s%s", dt_dive->notes, wlog_notes);
free(dt_dive->notes);
dt_dive->notes = copy_string(buffer);
} else if (wlog_notes) {
dt_dive->notes = copy_string(wlog_notes);
}
free(buffer);
free(wlog_notes);
/*
* Weight in Kg * 100
*/
tmp = (int) two_bytes_to_int(runner[pos_weight + 1], runner[pos_weight]);
if (tmp != 0x7fff) {
weightsystem_t ws = { {lrint(tmp * 10)}, QT_TRANSLATE_NOOP("gettextFromC", "unknown") };
add_cloned_weightsystem(&dt_dive->weightsystems, ws);
}
/*
* Visibility in m * 100. Arbitrarily choosed to be 5 stars if >= 25m and
* then assign a star for each 5 meters, resulting 0 stars if < 5 m
*/
tmp = (int) two_bytes_to_int(runner[pos_viz + 1], runner[pos_viz]);
if (tmp != 0x7fff) {
tmp = tmp > 2500 ? 2500 / 100 : tmp / 100;
dt_dive->visibility = (int) floor(tmp / 5);
}
/*
* Tank initial pressure in bar * 100
* If we know initial pressure, rework end pressure.
*/
tmp = (int) two_bytes_to_int(runner[pos_tank_init + 1], runner[pos_tank_init]);
if (tmp != 0x7fff) {
get_cylinder(dt_dive, 0)->start.mbar = tmp * 10;
get_cylinder(dt_dive, 0)->end.mbar = get_cylinder(dt_dive, 0)->start.mbar - lrint(get_cylinder(dt_dive, 0)->gas_used.mliter / get_cylinder(dt_dive, 0)->type.size.mliter) * 1000;
}
/*
* Dive suit, fixed length of 26 bytes, zero padded if shorter.
* Expected to be preferred by the user if he did the work of setting it.
*/
if (*(runner + pos_suit)) {
char wlog_suit_temp[SUIT_LENGTH + 1];
wlog_suit_temp[SUIT_LENGTH] = 0;
(void)memcpy(wlog_suit_temp, runner + pos_suit, SUIT_LENGTH);
wlog_suit = to_utf8((unsigned char *) wlog_suit_temp);
}
if (wlog_suit)
dt_dive->suit = copy_string(wlog_suit);
free(wlog_suit);
}
/*
* Main function call from file.c memblock is allocated (and freed) there.
* If parsing is aborted due to errors, stores correctly parsed dives.
*/
int datatrak_import(struct memblock *mem, struct memblock *wl_mem, struct dive_table *table, struct trip_table *trips,
struct dive_site_table *sites, struct device_table *devices)
{
UNUSED(trips);
unsigned char *runner;
int i = 0, numdives = 0, rc = 0;
long maxbuf = (long) mem->buffer + mem->size;
// Verify fileheader, get number of dives in datatrak divelog, zero on error
numdives = read_file_header((unsigned char *)mem->buffer);
if (!numdives) {
report_error(translate("gettextFromC", "[Error] File is not a DataTrak file. Aborted"));
goto bail;
}
// Verify WLog .add file, Beginning sequence and Nº dives
if(wl_mem) {
int compl_dives_n = wlog_header_parser(wl_mem);
if (compl_dives_n != numdives) {
report_error("ERROR: Not the same number of dives in .log %d and .add file %d.\nWill not parse .add file", numdives , compl_dives_n);
free(wl_mem->buffer);
wl_mem->buffer = NULL;
wl_mem = NULL;
}
}
// Point to the expected begining of 1st. dive data
runner = (unsigned char *)mem->buffer;
JUMP(runner, 12);
// Secuential parsing. Abort if received NULL from dt_dive_parser.
while ((i < numdives) && ((long) runner < maxbuf)) {
struct dive *ptdive = alloc_dive();
runner = dt_dive_parser(runner, ptdive, sites, devices, maxbuf);
if (wl_mem)
wlog_compl_parser(wl_mem, ptdive, i);
if (runner == NULL) {
report_error(translate("gettextFromC", "Error: no dive"));
free(ptdive);
rc = 1;
goto out;
} else {
record_dive_to_table(ptdive, table);
}
i++;
}
out:
taglist_cleanup(&g_tag_list);
sort_dive_table(table);
return rc;
bail:
return 1;
}
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