Assignments explicitly enclosed in parentheses are ignored.
* MISRA C:2004, 13.1 - Assignment operators shall not be used in expressions
that yield a Boolean value
* MISRA C++:2008, 6-2-1 - Assignment operators shall not be used in
sub-expressions
* MISRA C:2012, 13.4 - The result of an assignment operator should not be used
* MITRE, CWE-481 - Assigning instead of Comparing
* CERT, EXP45-C. - Do not perform assignments in selection statements
* CERT, EXP51-J. - Do not perform assignments in conditional expressions
While zlib is mandatory for transmission, it is not mandatory for curl.
A libcurl that has been compiled with no support for zlib will return no data if compressed responses are set to on.
In the basic case this prevents the port checking functionality from working properly. It also prevents web seeding from working as well.
This way all the qualifiers (`const`, `volatile`, `mutable`) are grouped
together, e.g. `T const* const x` vs. `const T* const x`. Also helps reading
types right-to-left, e.g. "constant pointer to constant T" vs. "constant
pointer to T which is constant".
There're places where manual intervention is still required as uncrustify
is not ideal (unfortunately), but at least one may rely on it to do the
right thing most of the time (e.g. when sending in a patch).
The style itself is quite different from what we had before but making it
uniform across all the codebase is the key. I also hope that it'll make the
code more readable (YMMV) and less sensitive to further changes.
Now that MSVC support for C99 is quite good, remove previously needed but
now unused checks and definitions, like PRI* format macros (including
PRIdMAX and TR_PRIuSIZE, replaced with %jd and %zu) and inline macro.
Also, remove ssize_t typedef and replace few occurences with ev_ssize_t.
Also, remove check for stdbool.h availability (guaranteed by C99) and
include it unconditionally (except when in C++ mode).
1. add the option the code to be used under GPLv2 or GPLv3; previously only GPLv2 was allowed
2. add the "proxy option" as described in GPLv3 so we can add future licenses without having to bulk-edit everything again :)
3. remove the awkward "exception for MIT code in Mac client" clause; it was unnecessary and confusing.
The webseed in question is downloading from an ubuntuone.com url. We ask for piece-sized ranges in a couple of different concurrent connections, and curl hints to the server that it's okay to gzip the response, or deflate it, or leave it raw. It looks like there's a bug in the server or in libcurl (or, somehow, Transmission) that's not compressing or decompressing these responses correctly -- we never get the right number of bytes in the response from libcurl. If we ask for the contents uncompressed, the download progresses towards completion.
As an aside, when testing this I noticed that deluge is a lot faster than Transmission on this torrent. In order for Transmission to reach parity here, webseed.c needs to know when it's appropriate to have more than 4 concurrent tasks and/or be able to request ranges > the torrent's piece size.
