wayvnc/src/util.c

56 lines
1.6 KiB
C

/*
* Copyright (c) 2019 - 2022 Andri Yngvason
* Copyright (c) 2022 Jim Ramsay
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include "util.h"
const char* wayvnc_version =
#if defined(GIT_VERSION)
GIT_VERSION;
#elif defined(PROJECT_VERSION)
PROJECT_VERSION;
#else
"UNKNOWN";
#endif
const char* default_ctl_socket_path()
{
static char buffer[128];
char* xdg_runtime = getenv("XDG_RUNTIME_DIR");
if (xdg_runtime)
snprintf(buffer, sizeof(buffer),
"%s/wayvncctl", xdg_runtime);
else
snprintf(buffer, sizeof(buffer),
"/tmp/wayvncctl-%d", getuid());
return buffer;
}
void advance_read_buffer(char (*buffer)[], size_t* current_len, size_t advance_by)
{
ssize_t remainder = *current_len - advance_by;
if (remainder < 0)
remainder = 0;
else if (remainder > 0)
memmove(*buffer, *buffer + advance_by, remainder);
*current_len = remainder;
}