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825 commits

Author SHA1 Message Date
Romain Vimont
b25404ee4b Print help to stdout 
The output of -h/--help was printed on stderr, although it is not an
error.

Printing on stdout allows to pipe the result directly:

    scrcpy --help | less

Instead of (in bash):

    scrcpy --help |& less
 2021-11-19 08:18:13 +01:00
Romain Vimont
4cfc1cd70a Assert that long options are correctly set 2021-11-19 08:06:23 +01:00
Romain Vimont
2fc80eae2d Simplify adb_tunnel 
With the new adb functions, the static adb_tunnel functions become
unnecessary.
 2021-11-19 07:25:03 +01:00
Romain Vimont
3fdbd994e0 Privatize low-level adb functions 
Only expose the interruptible user-friendly API.
 2021-11-19 07:25:03 +01:00
Romain Vimont
ce225f019a Use new user-friendly adb API 
Replace the adb_exec_*() calls by the new adb functions to simplify.
 2021-11-18 22:11:19 +01:00
Romain Vimont
b7559744a7 Expose new user-friendly adb functions 
Expose interruptible adb functions which return the expected result
directly, without exposing the process (sc_pid) to the caller.
 2021-11-18 22:08:15 +01:00
Romain Vimont
afb5a5e80f Rename adb functions to adb_exec_* 
This paves the way to replace them by more user-friendly functions that
will call them internally.
 2021-11-18 21:47:17 +01:00
Romain Vimont
84334cf7db Use sc_intr in file_handler 
Replace manual interruption handling by the recent sc_intr mechanism.
 2021-11-18 21:33:25 +01:00
Romain Vimont
0ba2686e1d Simplify file_handler 
Call the target functions directly.
 2021-11-18 19:46:47 +01:00
Romain Vimont
55648d4d64 Improve file_handler readability 
Use local variables as short name aliases.
 2021-11-18 19:46:40 +01:00
Romain Vimont
13fd693b50 Simplify adb_execute_p() 
Only pass the stdout pipe as parameter, scrcpy never writes to stdin or
reads from stderr of an adb process.
 2021-11-18 19:43:10 +01:00
Romain Vimont
0426ae885c Make "adb get-serialno" interruptible 
All process executions must be interruptible, so that Ctrl+c reacts
immediately.
 2021-11-18 19:41:41 +01:00
Romain Vimont
ea454e9cee Add interruptible function to read from pipe 
This will avoid to block Ctrl+c if the process the pipe is read from
takes too much time.
 2021-11-18 19:39:11 +01:00
Romain Vimont
cb65531533 Simplify sc_str_truncate() 
Use strcspn() to get the prefix length directly.
 2021-11-18 19:37:53 +01:00
Romain Vimont
9619ade706 Generalize string trunctation util function 
Add an additional argument to let the client pass the possible end
chars.
 2021-11-18 18:48:16 +01:00
Romain Vimont
f2781a8b6d Expose util function to truncate first line 
Move the local implementation from adb functions to the string util
functions.
 2021-11-18 18:48:16 +01:00
Romain Vimont
443cb14d6e Assume non-NULL serial in file_handler 
The previous commit guarantees to always initialize the serial, so the
file_handle may assume it is never NULL.
 2021-11-18 18:48:11 +01:00
Romain Vimont
b30c3a429f Always retrieve device serial 
This allows to execute all adb commands with the specific -s parameter,
even if it is not provided by the user.

In practice, calling adb without -s works if there is exactly one device
connected. But some adb commands (for example "adb push" on drag & drop)
could be executed after another device is connected, so the actual
device serial must be known.
 2021-11-18 18:32:15 +01:00
Romain Vimont
632bd5697b Add missing error handling 
If "adb get-serialno" fails, attempting to read from the uninitialized
pipe is incorrect.
 2021-11-18 18:32:15 +01:00
Romain Vimont
de50846905 Close process on check success 
The interruptible version of the function to check process success
(sc_process_check_success_intr()) did not accept a close parameter to
avoid a race condition. But as the result, the processes were not closed
at all.

Add a close parameter, and close the process separately to avoid the
race condition.
 2021-11-18 18:31:36 +01:00
Romain Vimont
9cb14b5166 Inherit only specific handles on Windows 
To be able to communicate with a child process via stdin, stdout and
stderr, the CreateProcess() parameter bInheritHandles must be set to
TRUE. But this causes *all* handles to be inherited, including sockets.

As a result, the server socket was inherited by the process running adb
to execute the server on the device, so it could not be closed properly,
causing other scrcpy instances to fail.

To fix the issue, use an extended API to explicitly set the HANDLEs to
inherit:
 - <https://stackoverflow.com/a/28185363/1987178>
 - <https://devblogs.microsoft.com/oldnewthing/20111216-00/?p=8873>

Fixes #2779 <https://github.com/Genymobile/scrcpy/issues/2779>
PR #2783 <https://github.com/Genymobile/scrcpy/pull/2783>
 2021-11-15 10:13:30 +01:00
Romain Vimont
9cb8766220 Factorize resource release after CreateProcess() 
Free the wide characters string in all cases before checking for errors.
 2021-11-15 07:49:01 +01:00
Romain Vimont
fd4ec784e0 Remove useless assignments on error 
Leave the output parameter untouched on error.
 2021-11-14 22:53:49 +01:00
Romain Vimont
52cebe1597 Fix Windows sc_pipe function names 
The implementation name was incorrect (it was harmless, because they are
not used on Windows).
 2021-11-14 22:41:38 +01:00
Romain Vimont
6a27062f48 Stop connection attempts if interrupted 
If the interruptor is interrupted, every network call will fail, but the
retry-on-error mechanism must also be stopped.
 2021-11-14 15:40:59 +01:00
Romain Vimont
739ff9dce0 Fix compilation errors with old SDL versions 
SDL_PixelFormatEnum has been introduced in SDL 2.0.10:
<cc6a8ac87e>

SDL_PIXELFORMAT_BGR444 has been introduced in SDL 2.0.12:
<a1c11854f2>

Fixes #2777 <https://github.com/Genymobile/scrcpy/issues/2777>
PR #2781 <https://github.com/Genymobile/scrcpy/pull/2781>

Reviewed-by: Yu-Chen Lin <npes87184@gmail.com>
 2021-11-14 15:37:30 +01:00
Romain Vimont
45b0f8123a Increase delay to inject HID on Ctrl+v 
2 milliseconds turn out to be insufficient sometimes. It seems that 5
milliseconds is enough (and still not noticeable).
 2021-11-14 01:23:06 +01:00
Romain Vimont
c1a34881d7 Use sc_ prefix for server 2021-11-14 01:23:05 +01:00
Romain Vimont
057c7a4df4 Move str_util to str 
Simplify naming.
 2021-11-14 01:22:22 +01:00
Romain Vimont
979ce64dc0 Improve string util API 
Use prefixed names and improve documentation.
 2021-11-14 01:22:22 +01:00
Romain Vimont
9a0bd545d5 Rename SC_INVALID_SOCKET to SC_SOCKET_NONE 
For consistency with SC_PROCESS_NONE.
 2021-11-14 01:22:22 +01:00
Romain Vimont
c4d008b96a Extract adb tunnel to a separate component 
This simplifies the server code.
 2021-11-14 01:22:22 +01:00
Romain Vimont
0d45c29d13 Move IPV4_LOCALHOST to net.h 
This constant will be used from several files.
 2021-11-14 01:22:22 +01:00
Romain Vimont
37c840a4c8 Interrupt on process terminated 
Interrupt any blocking call on process terminated, like on
server_stop().

This allows to interrupt any blocking accept() with correct
synchronization without additional complexity.
 2021-11-14 01:22:22 +01:00
Romain Vimont
f488cbd7e7 Make server interruptible 
Use an interruptor to immediately wake up blocking calls on
server_stop().
 2021-11-14 01:22:20 +01:00
Romain Vimont
40340509d9 Add interruptor utilities 
Expose wrapper functions for interrupting blocking calls, for process
and sockets.
 2021-11-13 22:54:18 +01:00
Romain Vimont
e0896142db Introduce interruptor tool 
An interruptor instance will help to wake up a blocking call from
another thread (typically to terminate immediately on Ctrl+C).
 2021-11-13 22:53:07 +01:00
Romain Vimont
0426708544 Run the server from a dedicated thread 
Define server callbacks, start the server asynchronously and listen to
connection events to initialize scrcpy properly.

It will help to simplify the server code, and allows to run the UI event
loop while the server is connecting. In particular, this will allow to
receive SIGINT/Ctrl+C events during connection to interrupt immediately.
 2021-11-13 10:19:52 +01:00
Romain Vimont
5b9c88693e Wait using a condition variable in server 
Currently, server_stop() is called from the same thread as
server_connect_to(), so interruption may never happen.

This is a step to prepare executing the server from a dedicated thread.
 2021-11-13 10:17:51 +01:00
Romain Vimont
a54dc8212f Reorder server functions 
This will avoid forward declarations in future commits.
 2021-11-13 10:16:35 +01:00
Romain Vimont
882e4cff5f Copy server params 
This is a preliminary step necessary to move the server to a separate
thread.
 2021-11-13 10:05:20 +01:00
Romain Vimont
9fa4d1cd4a Reorder server and server_params 
This will allow to define a server_params field in server.
 2021-11-13 10:05:20 +01:00
Romain Vimont
0bfa75a48b Split socket creation and connect/listen 
This will allow to assign the socket to a variable before connecting or
listening, so that it can be interrupted from another thread.
 2021-11-13 10:05:20 +01:00
Romain Vimont
ed19901db1 Set video and control sockets only on success 
Store the video and control sockets only if server_connect_to() returns
successfully.
 2021-11-13 10:05:01 +01:00
Romain Vimont
e69356c550 Initialize tunnel_enabled flag internally 
Set the flag from the inner methods, to avoid bypassing the assignment
by mistake (on error for example).
 2021-11-13 10:03:03 +01:00
Romain Vimont
03de9224fc Introduce process observer 
Add a tool to easily observe process termination.

This allows to move this complexity out of the server code.
 2021-11-13 10:02:23 +01:00
Romain Vimont
aa011832c1 Improve process API 
Prefix symbols and constants names and improve documentation.
 2021-11-12 22:44:37 +01:00
Romain Vimont
7e93abcf6d Factorize common impl of process_execute() 
Both implementations are the same. Move them to the common process.c.
 2021-11-12 22:44:37 +01:00
Romain Vimont
e80e6631e4 Remove duplicate function declaration 
The function process_terminate() was declared twice.
 2021-11-12 22:44:37 +01:00
Romain Vimont
fcc04f967b Improve file API 
Prefix symbols and constants names and improve documentation.
 2021-11-12 22:44:37 +01:00