Commit Graph

93 Commits

Author SHA1 Message Date
Daniel Stenberg
063d3f3b96
tidy-up: make conditional checks more consistent
... remove '== NULL' and '!= 0'

Closes #6912
2021-04-22 09:10:17 +02:00
Daniel Stenberg
692faeab9f
asyn-ares: use consistent resolve error message
... with the help of Curl_resolver_error() which now is moved from
asyn-thead.c and is provided globally for this purpose.

Follow-up to 35ca04ce1b

Makes test 1188 work for c-ares builds

Closes #6626
2021-02-18 15:02:17 +01:00
Jay Satiro
b9f11ae875 lib: drop USE_SOCKETPAIR in favor of CURL_DISABLE_SOCKETPAIR
.. since the former is undocumented and they both do the same thing.

Closes https://github.com/curl/curl/pull/6517
2021-02-09 02:47:51 -05:00
Jay Satiro
44c9e18e5f asyn-thread: fix build for when getaddrinfo missing
This is a follow-up to 8315343 which several days ago moved the resolver
pointer into the async struct but did not update the code that uses it
when getaddrinfo is not present.

Closes https://github.com/curl/curl/pull/6536
2021-01-27 03:26:55 -05:00
Daniel Stenberg
1dc8aa870e
hostip/proxy: remove conn->data use
Closes #6513
2021-01-26 10:04:47 +01:00
Daniel Stenberg
8335c6417e
hostip: remove conn->data from resolver functions
This also moves the 'async' struct from the connectdata struct into the
Curl_easy struct, which seems like a better home for it.

Closes #6497
2021-01-22 08:25:09 +01:00
Erik Olsson
0a5827571f lib: save a bit of space with some structure packing
- Reorder some internal struct members so that less padding is used.

This is an attempt at saving a bit of space by packing some structs
(using pahole to find the holes) where it might make sense to do
so without losing readability.

I.e., I tried to avoid separating fields that seem grouped
together (like the cwd... fields in struct ftp_conn for instance).
Also abstained from touching fields behind conditional macros as
that quickly can get complicated.

Closes https://github.com/curl/curl/pull/6483
2021-01-20 22:52:34 -05:00
Daniel Stenberg
215db086e0
lib: pass in 'struct Curl_easy *' to most functions
... in most cases instead of 'struct connectdata *' but in some cases in
addition to.

- We mostly operate on transfers and not connections.

- We need the transfer handle to log, store data and more. Everything in
  libcurl is driven by a transfer (the CURL * in the public API).

- This work clarifies and separates the transfers from the connections
  better.

- We should avoid "conn->data". Since individual connections can be used
  by many transfers when multiplexing, making sure that conn->data
  points to the current and correct transfer at all times is difficult
  and has been notoriously error-prone over the years. The goal is to
  ultimately remove the conn->data pointer for this reason.

Closes #6425
2021-01-17 23:56:09 +01:00
Daniel Stenberg
aba01da639
failf: remove newline from formatting strings
... as failf adds one itself.

Also: add an assert() to failf() that triggers on a newline in the
format string!

Closes #6365
2020-12-25 23:42:16 +01:00
Daniel Stenberg
37cdc2a05c
asyn: use 'struct thread_data *' instead of 'void *'
To reduce use of types that can't be checked at compile time. Also
removes several typecasts.

... and rename the struct field from 'os_specific' to 'tdata'.

Closes #6239
Reviewed-by: Jay Satiro
2020-11-23 22:54:18 +01:00
Daniel Stenberg
4d2f800677
curl.se: new home
Closes #6172
2020-11-04 23:59:47 +01:00
Daniel Stenberg
f3d501dc67
build: disable more code/data when built without proxy support
Added build to travis to verify

Closes #5466
2020-05-30 23:18:16 +02:00
Daniel Stenberg
842f73de58
timeouts: change millisecond timeouts to timediff_t from time_t
For millisecond timers we like timediff_t better. Also, time_t can be
unsigned so returning a negative value doesn't work then.

Closes #5479
2020-05-30 23:10:57 +02:00
Daniel Stenberg
8df455479f
source cleanup: remove all custom typedef structs
- Stick to a single unified way to use structs
 - Make checksrc complain on 'typedef struct {'
 - Allow them in tests, public headers and examples

 - Let MD4_CTX, MD5_CTX, and SHA256_CTX typedefs remain as they actually
   typedef different types/structs depending on build conditions.

Closes #5338
2020-05-15 08:54:42 +02:00
Daniel Stenberg
66b0775763
checksrc: enhance the ASTERISKSPACE and update code accordingly
Fine: "struct hello *world"

Not fine: "struct hello* world" (and variations)

Closes #5386
2020-05-14 00:02:05 +02:00
Daniel Stenberg
59e351a572
asyn-*: remove support for never-used NULL entry pointers
... and instead convert those to asserts to make sure they are truly
never NULL.

Closes #5324
2020-05-03 22:48:04 +02:00
Jay Satiro
153d581b7f asyn-thread: fix cppcheck warning
- Check for NULL entry parameter before attempting to deref entry in
  Curl_resolver_is_resolved, like is already done in asyn-ares.

This is to silence cppcheck which does not seem to understand that
asyn-ares and asyn-thread have separate Curl_resolver_is_resolved
and those units are mutually exclusive. Prior to this change it warned
of a scenario where asyn-thread's Curl_resolver_is_resolved is called
with a NULL entry from asyn-ares, but that couldn't happen.

Reported-by: rl1987@users.noreply.github.com

Fixes https://github.com/curl/curl/issues/5326
2020-05-02 15:03:39 -04:00
Jay Satiro
05d3312f77 asyn-thread: remove dead code 2020-02-09 02:27:29 -05:00
Daniel Stenberg
0b030a5b23
global_init: move the IPv6 works status bool to multi handle
Previously it was stored in a global state which contributed to
curl_global_init's thread unsafety. This boolean is now instead figured
out in curl_multi_init() and stored in the multi handle. Less effective,
but thread safe.

Closes #4851
2020-01-28 08:03:22 +01:00
Daniel Stenberg
8bd14c871f
fix: Copyright year out of date, should be 2020
Follow-up to 875314ed0b
2020-01-10 22:39:04 +01:00
Marcel Raad
875314ed0b
hostip: move code to resolve IP address literals to Curl_resolv
The code was duplicated in the various resolver backends.

Also, it was called after the call to `Curl_ipvalid`, which matters in
case of `CURLRES_IPV4` when called from `connect.c:bindlocal`. This
caused test 1048 to fail on classic MinGW.

The code ignores `conn->ip_version` as done previously in the
individual resolver backends.

Move the call to the `resolver_start` callback up to appease test 655,
which wants it to be called also for literal addresses.

Closes https://github.com/curl/curl/pull/4798
2020-01-10 17:57:16 +01:00
Xiang Xiao
060fb84a5a lib: remove erroneous +x file permission on some c files
Modified by commit eb9a604 accidentally.

Closes https://github.com/curl/curl/pull/4756
2019-12-27 22:55:52 -05:00
Marcel Raad
67a08dca27
curl_setup: disable IPv6 resolver without getaddrinfo
Also, use `CURLRES_IPV6` only for actual DNS resolution, not for IPv6
address support. This makes it possible to connect to IPv6 literals by
setting `ENABLE_IPV6` even without `getaddrinfo` support. It also fixes
the CMake build when using the synchronous resolver without
`getaddrinfo` support.

Closes https://github.com/curl/curl/pull/4662
2019-12-03 21:37:33 +01:00
Daniel Stenberg
9c76f694de
asyn-thread: make use of Curl_socketpair() where available 2019-10-10 11:04:38 +02:00
Daniel Stenberg
e34ec7de59
asyn-thread: s/AF_LOCAL/AF_UNIX for Solaris
Reported-by: Dagobert Michelsen
Fixes #4328
Closes #4333
2019-09-12 09:37:11 +02:00
Eric Wong
17d1e27d30
asyn-thread: issue CURL_POLL_REMOVE before closing socket
This avoids EBADF errors from EPOLL_CTL_DEL operations in the
ephiperfifo.c example.  EBADF is dangerous in multi-threaded
applications where I rely on epoll_ctl to operate on the same
epoll description from different threads.

Follow-up to eb9a604f8d

Bug: https://curl.haxx.se/mail/lib-2019-08/0026.html
Closes #4211
2019-08-11 22:58:01 +02:00
Daniel Stenberg
b1616dad8f
timediff: make it 64 bit (if possible) even with 32 bit time_t
... to make it hold microseconds too.

Fixes #4165
Closes #4168
2019-08-01 07:43:24 +02:00
Daniel Stenberg
a55faf33d4
cleanup: remove the 'numsocks' argument used in many places
It was used (intended) to pass in the size of the 'socks' array that is
also passed to these functions, but was rarely actually checked/used and
the array is defined to a fixed size of MAX_SOCKSPEREASYHANDLE entries
that should be used instead.

Closes #4169
2019-07-30 23:16:44 +02:00
Daniel Stenberg
041690aadb
asyn-thread: removed unused variable
Follow-up to eb9a604f. Mistake caused by me when I edited the commit
before push...
2019-07-30 10:29:54 +02:00
amkatyal
eb9a604f8d
asyn-thread: create a socketpair to wait on
Closes #4157
2019-07-30 08:27:30 +02:00
Daniel Stenberg
3af0e76d1e
HTTP3: initial (experimental) support
USe configure --with-ngtcp2 or --with-quiche

Using either option will enable a HTTP3 build.
Co-authored-by: Alessandro Ghedini <alessandro@ghedini.me>

Closes #3500
2019-07-21 23:49:03 +02:00
Daniel Stenberg
754ae10398
threaded-resolver: shutdown the resolver thread without error message
When a transfer is done, the resolver thread will be brought down. That
could accidentally generate an error message in the error buffer even
though this is not an error situationand the transfer would still return
OK.  An application that still reads the error buffer could find a
"Could not resolve host: [host name]" message there and get confused.

Reported-by: Michael Schmid
Fixes #3629
Closes #3630
2019-03-01 09:31:34 +01:00
Brad Spencer
84a30d0a41
curl_multi_remove_handle() don't block terminating c-ares requests
Added Curl_resolver_kill() for all three resolver modes, which only
blocks when necessary, along with test 1592 to confirm
curl_multi_remove_handle() doesn't block unless it must.

Closes #3428
Fixes #3371
2019-01-07 10:05:20 +01:00
Daniel Stenberg
dcd6f81025
snprintf: renamed and we now only use msnprintf()
The function does not return the same value as snprintf() normally does,
so readers may be mislead into thinking the code works differently than
it actually does. A different function name makes this easier to detect.

Reported-by: Tomas Hoger
Assisted-by: Daniel Gustafsson
Fixes #3296
Closes #3297
2018-11-23 08:26:51 +01:00
Romain Fliedel
6765e6d9e6
ares: remove fd from multi fd set when ares is about to close the fd
When using c-ares for asyn dns, the dns socket fd was silently closed
by c-ares without curl being aware. curl would then 'realize' the fd
has been removed at next call of Curl_resolver_getsock, and only then
notify the CURLMOPT_SOCKETFUNCTION to remove fd from its poll set with
CURL_POLL_REMOVE. At this point the fd is already closed.

By using ares socket state callback (ARES_OPT_SOCK_STATE_CB), this
patch allows curl to be notified that the fd is not longer needed
for neither for write nor read. At this point by calling
Curl_multi_closed we are able to notify multi with CURL_POLL_REMOVE
before the fd is actually closed by ares.

In asyn-ares.c Curl_resolver_duphandle we can't use ares_dup anymore
since it does not allow passing a different sock_state_cb_data

Closes #3238
2018-11-20 19:58:45 +01:00
Rikard Falkeborn
1c14ba60cc
asyn-thread: Remove unused macro
The macro seems to never have been used.

Closes #2852
2018-08-09 12:37:19 +02:00
Daniel Stenberg
3ef67c6861
easy_perform: use *multi_timeout() to get wait times
... and trim the threaded Curl_resolver_getsock() to return zero
millisecond wait times during the first three milliseconds so that
localhost or names in the OS resolver cache gets detected and used
faster.

Closes #2685
2018-06-27 13:01:00 +02:00
Daniel Stenberg
ac9a179fe9
multi: fix memory leak when stopped during name resolve
When the application just started the transfer and then stops it while
the name resolve in the background thread hasn't completed, we need to
wait for the resolve to complete and then cleanup data accordingly.

Enabled test 1553 again and added test 1590 to also check when the host
name resolves successfully.

Detected by OSS-fuzz.
Closes #1968
2018-06-16 12:01:27 +02:00
Daniel Stenberg
67636222f4
threaded resolver: track resolver time and set suitable timeout values
In order to make curl_multi_timeout() return suitable "sleep" times even
when there's no socket to wait for while the name is being resolved in a
helper thread.

It will increases the timeouts as time passes.

Closes #2419
2018-03-24 00:02:25 +01:00
Daniel Stenberg
5d543fe906 time: rename Curl_tvnow to Curl_now
... since the 'tv' stood for timeval and this function does not return a
timeval struct anymore.

Also, cleaned up the Curl_timediff*() functions to avoid typecasts and
clean up the descriptive comments.

Closes #2011
2017-10-25 18:48:05 +02:00
Daniel Stenberg
b9d25f9a6b timediff: return timediff_t from the time diff functions
... to cater for systems with unsigned time_t variables.

- Renamed the functions to curlx_timediff and Curl_timediff_us.

- Added overflow protection for both of them in either direction for
  both 32 bit and 64 bit time_ts

- Reprefixed the curlx_time functions to use Curl_*

Reported-by: Peter Piekarski
Fixes #2004
Closes #2005
2017-10-25 09:54:37 +02:00
Dan Fandrich
df29455dbc asyn-thread: Fixed cleanup after OOM
destroy_async_data() assumes that if the flag "done" is not set yet, the
thread itself will clean up once the request is complete.  But if an
error (generally OOM) occurs before the thread even has a chance to
start, it will never get a chance to clean up and memory will be leaked.
By clearing "done" only just before starting the thread, the correct
cleanup sequence will happen in all cases.
2017-08-29 00:35:19 +02:00
Dan Fandrich
d5d736726c asyn-thread: Improved cleanup after OOM situations 2017-08-28 23:55:55 +02:00
Dan Fandrich
11a8778e0b asyn-thread: Set errno to the proper value ENOMEM in OOM situation
This used to be set in some configurations to EAI_MEMORY which is not a
valid value for errno and caused Curl_strerror to fail an assertion.
2017-08-28 23:55:55 +02:00
Jay Satiro
af0216251b curl_setup_once: Remove ERRNO/SET_ERRNO macros
Prior to this change (SET_)ERRNO mapped to GetLastError/SetLastError
for Win32 and regular errno otherwise.

I reviewed the code and found no justifiable reason for conflating errno
on WIN32 with GetLastError/SetLastError. All Win32 CRTs support errno,
and any Win32 multithreaded CRT supports thread-local errno.

Fixes https://github.com/curl/curl/issues/895
Closes https://github.com/curl/curl/pull/1589
2017-07-10 02:09:27 -04:00
Daniel Stenberg
6b0aa00abb asyn-thread.c: fix unused variable warnings on macOS 2017-07-06 11:49:50 +02:00
Daniel Stenberg
31b39c40cf multi: use a fixed array of timers instead of malloc
... since the total amount is low this is faster, easier and reduces
memory overhead.

Also, Curl_expire_done() can now mark an expire timeout as done so that
it never times out.

Closes #1472
2017-05-10 12:55:36 +02:00
Marcel Raad
ea1b864786
asyn-thread: fix unused macro warnings
Don't do anything in this file if CURLRES_THREADED is not defined.
2017-05-07 19:02:34 +02:00
Daniel Stenberg
b228d2952b checksrc: stricter no-space-before-paren enforcement
In order to make the code style more uniform everywhere
2016-12-13 23:39:11 +01:00
Daniel Stenberg
8657c268e1 checksrc: white space edits to comply to stricter checksrc 2016-11-24 23:58:22 +01:00