diff options
Diffstat (limited to 'src/hooks.c')
| -rw-r--r-- | src/hooks.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/src/hooks.c b/src/hooks.c deleted file mode 100644 index 96f6f83..0000000 --- a/src/hooks.c +++ /dev/null @@ -1,249 +0,0 @@ -/*- - * redshift-ng - Automatically adjust display colour temperature according the Sun - * - * Copyright (c) 2009-2018 Jon Lund Steffensen <jonlst@gmail.com> - * Copyright (c) 2014-2016, 2025 Mattias Andrée <m@maandree.se> - * - * redshift-ng is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * redshift-ng is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with redshift-ng. If not, see <http://www.gnu.org/licenses/>. - */ -#include "common.h" - - -/** - * Names of periods supplied to scripts - */ -static const char *period_names[] = { - [PERIOD_NONE] = "none", - [PERIOD_DAYTIME] = "daytime", - [PERIOD_NIGHT] = "night", - [PERIOD_TRANSITION] = "transition" -}; - - -/** - * Path name of the hook directory, `NULL` if not found - */ -static char *dirpath = NULL; - -/** - * The allocation size of `dirpath` - */ -static size_t dirpathsize; - -/** - * The length of the string in `dirpath` - */ -static size_t dirpathlen; - - -/** - * Paths, in order of priority, to test when looking for - * the hook directory for redshift - */ -static const struct env_path paths[] = { - {0, "XDG_CONFIG_HOME", "/redshift-ng/hooks"}, - {0, "XDG_CONFIG_HOME", "/redshift/hooks"}, -#if defined(WINDOWS) - {0, "localappdata", "/redshift-ng/hooks"}, - {0, "localappdata", "/redshift/hooks"}, -#endif - {0, "HOME", "/.config/redshift-ng/hooks"}, - {0, "HOME", "/.config/redshift/hooks"}, - {0, NULL, "/.config/redshift-ng/hooks"}, - {0, NULL, "/.config/redshift/hooks"}, - {1, "XDG_CONFIG_DIRS", "/redshift-ng/hooks"}, - {1, "XDG_CONFIG_DIRS", "/redshift/hooks"}, -#if !defined(WINDOWS) - {0, "", "/etc/redshift-ng/hooks"}, - {0, "", "/etc/redshift/hooks"} -#endif -}; - - -/** - * Deallocates `dirpath` - */ -static void -cleanup(void) -{ - free(dirpath); - dirpath = NULL; -} - - -/** - * Search for and open the hook directory for reading - * - * @param path_out Output parameter for the hook directroy path - * @param pathbuf_out Output parameter for the memory allocation for `*path_out`; - * will be set to `NULL`; shall be free(3)d by the caller - * @return `DIR` object for the reading the directory; `NULL` if not found - */ -static DIR * -open_hooks_dir(const char **path_out, char **pathbuf_out) -{ - DIR *dir = NULL; - size_t i; - - *path_out = NULL; - *pathbuf_out = NULL; - - for (i = 0; !dir && i < ELEMSOF(paths); i++) - dir = try_path_opendir(&paths[i], path_out, pathbuf_out); - if (dir) - weprintf(_("Found hook directory `%s'."), *path_out); - else - weprintf(_("No hook directory found.")); - - return dir; -} - - -/** - * Run hook file - * - * @param path The path to the hook file - * @param argv `NULL` terminated list of command line arguments - * for the hooks; must contain an unused initial slot, - * which the function will use to provide the zeroth - * argument - */ -static void -run_hook(const char *path, const char *argv[]) -{ -#ifdef WINDOWS - /* TODO [Windows] hooks are not support on Windows */ -#else - switch (fork()) { - case -1: - weprintf("fork:"); - break; - - case 0: - if (dup2(STDOUT_FILENO, STDERR_FILENO) != STDERR_FILENO) { - weprintf("dup2 <stdout> <stderr>:"); - _exit(1); - } - argv[0] = path; - execv(path, (const void *)argv); - if (errno != EACCES) - weprintf("execv %s:", path); - _exit(1); - - default: - /* SIGCHLD is ignored */ - break; - } -#endif -} - - -/** - * Run hooks - * - * @param argv `NULL` terminated list of command line arguments - * for the hooks; must contain an unused initial slot, - * which the function will use to provide the zeroth - * argument - */ -static void -run_hooks(const char *argv[]) -{ - static int looked_up_dir = 0; - static int hook_file_is_regular = 0; - static int hook_file_checked = 0; - - DIR *dir; - struct dirent *f; - size_t required; - const char *dirpath_static; - - if (hook_file_is_regular) { - goto run_hook_file; - - } else if (hook_file) { - if (!hook_file_checked) { - hook_file_checked = 1; - if (!strcmp(hook_file, "/dev/null") || - !strcmp(hook_file, "/var/empty") || - !strcmp(hook_file, "/var/empty/")) - goto no_hooks; - } - - dir = opendir(hook_file); - if (!dir) { - if (errno == ENOTDIR) { - hook_file_is_regular = 1; - run_hook_file: - run_hook(hook_file, argv); - return; - } - weprintf("opendir %s:", hook_file); - no_hooks: - free(hook_file); - hook_file = NULL; - looked_up_dir = 1; - dirpath = NULL; - return; - } - - } else if (!looked_up_dir) { - looked_up_dir = 1; - dir = open_hooks_dir(&dirpath_static, &dirpath); - if (!dir) - return; - if (!dirpath) - dirpath = estrdup(dirpath_static); - dirpathsize = dirpathlen = strlen(dirpath); - atexit(&cleanup); - - } else if (dirpath) { - dir = opendir(dirpath); - if (!dir) { - weprintf("opendir %s:", dirpath); - cleanup(); - return; - } - - } else { - return; - } - - while ((errno = 0, f = readdir(dir))) { - if (f->d_name[0] == '.' || !f->d_name[0] || strchr(f->d_name, '\0')[-1] == '~') - continue; - - required = dirpathlen + sizeof("/") + strlen(f->d_name); - if (required > dirpathsize) - dirpath = erealloc(dirpath, dirpathsize = required); - stpcpy(stpcpy(&dirpath[dirpathlen], "/"), f->d_name); - - run_hook(dirpath, argv); - - dirpath[dirpathlen] = '\0'; - } - - if (errno) - weprintf("readdir %s:", dirpath); - - closedir(dir); -} - - -void -run_period_change_hooks(enum period prev_period, enum period period) -{ - const char *argv[] = {NULL, "period-changed", period_names[prev_period], period_names[period], NULL}; - run_hooks(argv); -} |