paraslash - network audio streaming tools https://git.tue.mpg.de/cgit/paraslash/atom?h=next 2026-09-20T16:35:52Z 2026-09-20T16:35:52Z Andre Noll maan@tuebingen.mpg.de 2026-09-18T20:49:50Z urn:sha1:fb7fe4cee857f562237f59d125455bb67ee9cdd1 2026-07-14T18:11:18Z Andre Noll maan@tuebingen.mpg.de 2026-05-26T21:31:29Z urn:sha1:3f0ad7aef67b6707f52c71931186ab0b20865a1a This changes gui.c to no longer spawn a para_audioc process to get the status items from para_audiod. Instead, the para_gui process connects directly to audiod using the same mechanism as para_audioc. Besides being more efficient, this approach has the advantage that status item updates are now atomic in the sense that complete sideband packages (containing any number of status items) are received, so torn status items can no longer occur. To implement this, move the code that can be shared between gui and audioc to a separate file, audioc_common.c. This file contains only one public function: connect_audiod(). Since this function uses unix socket magic and employs the sideband API, para_gui needs to link in net.o and sideband.o, in addition to the new audioc_common.o. With these changes in place, para_gui's --stat-command option becomes unused. Drop it, as it's not worth the pain to introduce a depreciation period. On the other hand, para_gui now needs an option to specify the path to the socket on which para_audiod is expected to listen, so move the lopsub stanza of para_audioc's --socket option to the new socket.m4 file and include it from both the audioc and the gui lopsub suites. 2026-07-04T20:46:44Z Andre Noll maan@tuebingen.mpg.de 2026-06-23T19:52:18Z urn:sha1:3123128dbf3900fb7baf6c2a4577b76340ae4404 If this directory does not exist, para_play creates it at startup. However, para_client and para_audioc do not do that, hence they fail to write the history file on exit. Teach para_client and para_audioc to create ~/.paraslash just as para_play does. Replace para_mkdir() by create_dot_paraslash() as this is what all callers need. 2026-03-17T22:45:43Z Andre Noll maan@tuebingen.mpg.de 2026-03-15T14:57:29Z urn:sha1:ea0cecf96e08c489fdcc94d046019f4ce46f58e2 Generated with sed -i 's|Copyright.*Andre Noll.*|SPDX-License-Identifier: GPL-2.0 */|g' *.c *.h followed by manually tweaking the result a bit. No license change intended. 2026-01-27T13:08:15Z Andre Noll maan@tuebingen.mpg.de 2026-01-24T22:07:05Z urn:sha1:5f57f7b55b16ef00a4be5d748d1a6ae99b43ec7c This breaks compatibility with v0.7, but also simplifies the code nicely. 2026-01-15T14:30:50Z Andre Noll maan@tuebingen.mpg.de 2026-01-15T09:17:14Z urn:sha1:034b698b74539831c9004168867c743c2ec2dea8 Unsurprisingly, the quick fix which intended to address a regression related to early connection failures was flawed itself. This time, subcommands which do not create output such as "on", "off" and "sb" broke. 2026-01-12T21:27:28Z Andre Noll maan@tuebingen.mpg.de 2026-01-12T20:40:59Z urn:sha1:87ba17b3c75a5d979295eb05a8794c6f41bff533 Both server and client handled the "permission denied" case (client UID mismatch) incorrectly. This should fix it. 2026-01-04T21:20:55Z Andre Noll maan@tuebingen.mpg.de 2025-11-14T23:21:57Z urn:sha1:6a582184c35262f086ae4d29020d6000206f8901 Currently, para_audioc writes the data it received over the local socket from audiod to stdout. This include error messages, if any. Also, para_audioc does not know whether the subcommand passed to para_audiod was successful, and exits successfully even if the subcommand failed. Thanks to the sideband API, para_client is much smarter in this regard. This patch employs the existing API also for the connection between para_audioc and para_audiod. Besides comment updates and the new sideband_log() helper, no changes to the sideband API are necessary. The client code stays unmodified as well. The new helper has three callers, two in audioc.c and one in client_common.c. Remove a pointless NULL check and a debug log message from dispatch_sbb() of client_common.c while at it. The message was useful for testing but is no longer needed. The new code is backwards compatible, i.e., an old para_audioc can still communicate with a new para_audiod and vice versa. Thus, we have to maintain two "protocols" for the audioc-audiod communication, named v1 and v2 in the code and in what follows. For example, if audioc or audiod are unpatched (so that v1 is in use), then ./para_audioc aaa > /dev/null prints nothing because with v1 the error message goes to stdout, and the command exits successfully (exit code 0). If both sides support v2, the same command prints audiod: errctx: aaa audiod: invalid subcommand main: audiod dispatch error to stderr, then exits unsuccessfully (exit code 1). Only the server reply is sideband-encoded. The way how command line arguments are passed from audioc to audiod is also changed, though. Instead of terminating the arguments with newlines, a v2 audioc prepends an additional \0 byte to the argument list, and terminates each argument with \0 in the same way the --print0 directive of GNU find(1) does. An v1 audiod interprets the leading NUL as an empty command line and closes the connection without sending any data. This can never happen with a v2 audiod because that always sends an empty sideband package to indicate success/failure. So the v2 code of audioc.c retries with v1 in this case. Conversely, a v1 client never sends an empty string, so a leading \0 identifies a v2 client. Thus, the patched audiod only needs to check the first byte of the received buffer to select the right "protocol" version. The stat and grab subcommands need special treatment because these may stay active after the command handler returns. Thus, the command handler must not send an EXIT_SUCCESS sideband packet in this case. Moreover, the protocol version needs to be communicated with the status/grab client tasks. This is done by adding a flag to the existing flags bitmask of struct stat_client and struct grab_client. After v0.8.0 has been released, the compatibility code can be dropped. 2026-01-04T21:20:55Z Andre Noll maan@tuebingen.mpg.de 2025-11-10T20:57:40Z urn:sha1:983a349d925ce7d1b6471c3b63770c76b970ada4 This is the right thing to do, since {recv,send}_cred_buffer() need to set up an iovec structure. 2026-01-04T21:20:54Z Andre Noll maan@tuebingen.mpg.de 2025-11-03T17:43:29Z urn:sha1:3df3c8880f06dc4058a4c58c291892835ca8eb06 Only para_audioc needs the former, and only para_audiod needs the latter. With this patch in place, both functions can be static and the other executables which link in net.o don't get bloated with unnecessary code.