For a few of the locations where error handling is done correctly this
does the right thing. For most other places it gracefully ignores any
issues which is what the original code did as well. Errors are
already logged by the called functions in those cases.
PEP-0394 (https://www.python.org/dev/peps/pep-0394/) recommends to use more specific shebangs.
For example, Debian allows /usr/bin/python to be configured to python2 via `update-alternatives python`, but the script does not work with Python 2.
* refactor: safe sql access
* Clean up the worst rebase mistakes
* Some more progress on the rebase fallout and this branch
* upgrade and compile again
* cleanup from rebase
* example of how to prepare now
* rebase fixes
* add sql.query_map
* less preparation
* more improvements in sql code
* fix string truncation
* more prepare conversions
* most prep done
* fix tests
* fix ffi
* fix last prepares
* fix segfaults and some queries
* use r2d2 pool
* fix dc_job sql call, to reduce contention
* try newer rust
* No more vararg printing (drop dc_log_)
* ignore expected errors
* fix: uses exists instead of execute where needed
* fix: get_contacts logic was broken
* fix: contact creation
* test on 32bit linux
* ci: try running 32bit without cross
* undo 32bit tests
* refactor: rename dc_sqlite3 to sql
* fix: safer string conversions
* more string fixes
* try fixing appveyor build to 64bit
* chore(ci): hardcode target
* chore(ci): appveyor
* some cleanup work
* try fix darwin
* fix and improve sql escaping
* fix various bugs
* fix chat deletion
* refactor: cleanup config values and move to their own file
* refactor: move more methods onto the sql struct
* dont panic on failed state loading
* first round of cr
* one more cr fix
* stop using strange defaults
* remove unused escapes
This clears the way to start working on making the functions safe.
But small PRs are good PRs so let's get this rename out of the way and
have future PRs less noisy.
Also stop making this #[repr(C)] and start making fields that are not
used private. Lastly clean up some comments by moving them or
deleting them, so they make sense again after the translation.
This makes interactively running the tests a much more pleasant
experience rather than something one dreads. These tests will still
be run on the CI. To run these manually run:
cargo test [TESTNAME] -- --ignored
With the API changes already done, notably .is_open(), the
implementation of the sqlite can and should now be private.
This also doesn't need to be #[repr(C)] anymore since the C API does
not need to access the fields in the struct.
Experiment with refactoring the internal sql interface a bit. My
original goal was to modify the schema and thus refactor to a state
where it would be sane to write tests for dc_sqlite_open() (and/or
however it ends up refactored) to assert schame changes before/after.
The C API allows passing a NULL pointer is for the callback function.
However when calling the callback nothing checks for this null pointer
and thus things fail badly. Even worse since the C API is defined
using an "fn pointer" rather than a "*-ptr" or raw pointer to the
function rust does not realise this can be invalid and therefore the
typechecker does not catch this even though there are no unsafe casts.
Fix this by making the callback an Option in rust, this can be easily
checked when calling. Also add a Context.call_cb() function which
simplifies calling the callback, hides the weird syntax due to the
function pointer and makes the call a little easier. Finally it also
means the option checking is only needed in one place.
For the C API this needs to check if this is a NULL pointer or not,
this is implicitly done by rust using the "nullable pointer
optimisation":
https://doc.rust-lang.org/nomicon/ffi.html#the-nullable-pointer-optimization
This stops using the deprecated libc::uint32_t and libc::uint64_t
types in favour of the native u32 and u64 types.
It also uses a newer nightly compiler to get rid of the incorrect
"unused no_mangle" warning when compiling incrementally.
Finally the newer compiler prefers us to be explicit when implementing
traits using the new dyn keyword.
