This seems to do the dive data descrambling right for both files I have
access to. Except it uses a hardcoded (different) offset for the two.
I have yet to figure out how to automatically detect the offset itself
properly, so you have to compile for the right file.
I'll figure it out, but I'm committing this as a reasonable point in the
process.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It turns out the odd "different CAN files have different header offsets"
came from the fact that the decode block was different lengths, and I
had not picked the correct place to start - and instead had found two
different places that were at different offsets due to the decode block
length differences.
This fixes that up, and it looks like the dive header is correctly
descrambled (but what the data *means* is unclear, although there is now
an ASCII date and time visible, so at least one part of it is pretty
obvious).
The actual dive data unscrambling is still different for the two
test-files I have to play with, I do not know why.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This descrambles at least parts of the header data. Some of it has the
same pattern of data 4kB apart, it may be that there is a dive hiding in
there too (ie what I currently call a "header" may in fact be a header
_plus_ a dive).
But the 4kB thing may well be an artifact of the crazy scrambling code
itself. Who knows what kind of chunking the Cochran Analyst
"encryption" uses.
As with the dive data, there seems to be some offset differences between
different CAN files.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
So this descrambles all the dives in *one* of my cochran test files. I
still don't know what the dive data *means*, but it's not a random
jumble of bytes any more: there are very clear patterns.
However, the magic offsets that work for that particular CAN file are
not generic, because they don't work for another. So there is some
magic dynamic decoding that I don't know about. There is probably more
decode information in the initial decode block, over and beyond just the
scrambling bytes.
(The scrambling array is 234 bytes starting at 0x40001, but the first
actual *dive* data starts at 0x45e03, so there's tons of unknown stuff
in the file even outside the dives themselves)
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Just do the hex-dump in the program, and print all the results to
standard output. Avoid the need to do 'od' by hand etc to see what
happens when you play with the decoder.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It's broken, and currently only writes out a debug output file per dive.
I'm not sure I'll ever really be able to decode the mess that is the
Cochran ANalyst stuff, but I have a few test files, along with separate
depth info from a couple of the dives in question, so in case this ever
works I can at least validate it to some degree.
The file format is definitely very intentionally obscured, though.
Annoying. It's not like the Cochran software is actually all that good
(it's really quite a horribly nasty Windows-only app, I'm told).
Cochran Analyst is very much not the reason why people would buy those
computers. So Cochran making their computers harder to use with other
software is just stupid.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Most of the parsers will want the content in memory, so keep them
simple. The fact that the Suunto parser uses "libzip" that has to
re-open the file is annoying and causes us to re-open the file etc.
But it's the odd man out, so don't design the "open_by_filename()"
function around it. Pretty much everybody else will want to avoid
having to cook up their own IO routines.
Also, when reading the file, NUL-terminate the buffer. This allows us
to just treat text files as large strings if we want to, and doesn't
matter for binary files (we still pass in the length explicitly).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I apparently was so congested that it affected my typing too when I
wrote that, and then copy-paste meant that the use and declaration
matched despite the misspelling.
Reported-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
You need to have libzip-devel installed, and pkg-config needs to know about it
for the build to pick up on it.
On at least Fedora, a simple "yum install libzip-devel" will make things
work, although you may need to force a rebuild of subsurface too (the
"file.o" file in particular - the Makefile doesn't track system
dependencies).
Then, you can just do
subsurface my-dives.SDE
to read the data directly from the SDE file.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We're going to eventually import non-xml files too, so let's begin
splitting the logic up.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'info-split' of git://git.hohndel.org/subsurface:
Add statistics for longest, shortest, and shallowest dive
Create separate single dive and total stats pages
Separate out single dive statistics and total statistics
I don't really like calling the shallowest dive "min depth", but all other
texts that I could come up with that were reasonably short weren't any
better...
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Right now this just changes the infrastructure - nothing outside of
statistics.c is modified. This is simply in preparation to split out the
single dive info and the total dive statistics in the future (as we are
creating more info and more stats and they will overflow the screen area
available - so this will turn into two notebook tabs).
This commit does not change any functionality.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
We have local variables or function arguments with the same names as
function static variables (or in one case, function arguments).
While all the current code was correct, it could potentially cause
confusion when chasing bugs or reviewing patches. This should make things
clearer.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Move the About and Preferences menu item to the App menu.
Switch the accelerator key to be Meta (i.e., Command) instead of Control
This required a bit of restructuring of the code, but it's all for a good
cause.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
CFPreferences* seems to be the proper way to handle preferences on MacOSX.
This approach also eliminates a problem where the hard coded preferences
path couldn't be read.
Signed-off-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
[ fixed small coding style issues ]
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Add missing internal links
Work on better visual representation of structured data
Start creating quoted text (instead of styled text)
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
You can do "make doc" in the main directory to create the html version,
and if you want to play around with it, do "make show" in the
Documentation subdirectory to start firefox on the end result.
It's by no means perfect, but it gives somewhat reasonable results, and
this is enough initial work for people to play around with, I think.
NOTE! You need "asciidoc" installed to do this: it's a python program,
so it should be pretty easy even on non-Linux platforms. And on Linux,
most distributions package it, so you just have to do something like
yum install asciidoc
to get it (replace with apt-get/zypper/whatever).
Asciidoc can generate other output too (man-pages, LaTeX, etc), maybe
people want to play with that part too.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
To do this a few things needed to move into the os specific files, but the
overall change is fairly small and the difference on the Mac is amazing.
Subsurface now becomes a Mac app with Mac toolbar and useful default
fonts.
Changed the CFBundleIdentifier to be the reverse DNS of the subsurface
site (sadly, 'torvalds' is not yet a TLD).
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Right now we do certain cylinder info operations only when importing
from an XML file, which is wrong. In particular, we do the "is the
gasmix air" or "what is the standard cylinder name" only at XML read
time, which means that if you import a dive directly from the dive
computer, it won't have the air sanitization or the proper default
cylinder names.
Of course, most dive computers don't actually save enough cylinder
information for us to do the cylinder name lookup anyway, but some do.
And all Nitrox-capable dive computers do have that O2 percentage that
needs cleanup too.
Reported-by: Henrik Brautaset Aronsen <subsurface@henrik.synth.no>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'windows' of git://git.hohndel.org/subsurface:
Fixes for the Windows installer
* 'docs' of git://git.hohndel.org/subsurface:
Version 0.0.7 of user manual
* 'forlinus' of git://git.hohndel.org/subsurface:
Remove unused return value
We never use the number of decimals that this function returns. So we
might as well not return them to begin with.
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Add missing files and update a library version number.
The library version thing seems to indicate that this is much more fragile
than I'd want it to be...
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Not sure, but us-ascii might have been intended.
Signed-off-by: Cristian Ionescu-Idbohrn <cii@axis.com>
[ And even if you do want to use utf8, you should use it correctly, not
with this "pick random character" approach - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Using xmlParseFile() was simple, but I'm planning on extending the file
parsing past just XML, since we want to be able to import other formats
too. And quite frankly, that means that we'll want to read the file
into memory to look at it before we start parsing it.
We could decide do it by file extensions too, and I'll look at that
approach as well, but regardless of how we do things it's almost
certainly a good idea to do the file access in one place. The XML
parsing might as well happen from a memory buffer instead anyway.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The plain dash may look a bit too much like a trimix specification. Is
the ellipsis better? Maybe.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Support for multiple cylinders and gas change events when Importing
JDiveLog logs to Subsurface. This is tested with manually crafted data
and not real data (originating from dive computer).
NOTE: Subsurface does not handle importing multiple cylinders
correctly but imports only the first cylinder. However, manually
converting data to a file and opening that in Subsurface works
correctly.
(xsltproc jdivelog2subsurface.xslt jdivelog-gas.jlb > gas.xml)
Some minor tweaking on importing JDiveLog specific fields to notes
fields in Subsurface is also included.
Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'forlinus' of git://git.hohndel.org/subsurface:
Improve Makefile for MacOS
Add reasonable default device names for divecomputer import
More intuitive label for "not saving" when exiting
