initial commitorigin/gh-pagesgithub/gh-pages

1 files changed, 0 insertions, 257 deletions

diff --git a/src/rc/rc-plugin.c b/src/rc/rc-plugin.c
deleted file mode 100644
index d981afd8..00000000
--- a/src/rc/rc-plugin.c
+++ /dev/null
@@ -1,257 +0,0 @@
-/*
-  librc-plugin.c
-  Simple plugin handler
-*/
-
-/*
- * Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/types.h>
-#include <sys/wait.h>
-
-#include <dirent.h>
-#include <dlfcn.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "einfo.h"
-#include "queue.h"
-#include "rc.h"
-#include "rc-misc.h"
-#include "rc-plugin.h"
-
-#define RC_PLUGIN_HOOK "rc_plugin_hook"
-
-bool rc_in_plugin = false;
-
-typedef struct plugin
-{
-	char *name;
-	void *handle;
-	int (*hook)(RC_HOOK, const char *);
-	TAILQ_ENTRY(plugin) entries;
-} PLUGIN;
-TAILQ_HEAD(, plugin) plugins;
-
-#ifndef __FreeBSD__
-dlfunc_t
-dlfunc(void * __restrict handle, const char * __restrict symbol)
-{
-	union {
-		void *d;
-		dlfunc_t f;
-	} rv;
-
-	rv.d = dlsym(handle, symbol);
-	return rv.f;
-}
-#endif
-
-void
-rc_plugin_load(void)
-{
-	DIR *dp;
-	struct dirent *d;
-	PLUGIN *plugin;
-	char file[PATH_MAX];
-	void *h;
-	int (*fptr)(RC_HOOK, const char *);
-
-	/* Don't load plugins if we're in one */
-	if (rc_in_plugin)
-		return;
-
-	TAILQ_INIT(&plugins);
-
-	if (!(dp = opendir(RC_PLUGINDIR)))
-		return;
-
-	while ((d = readdir(dp))) {
-		if (d->d_name[0] == '.')
-			continue;
-
-		snprintf(file, sizeof(file), RC_PLUGINDIR "/%s",  d->d_name);
-		h = dlopen(file, RTLD_LAZY);
-		if (h == NULL) {
-			eerror("dlopen: %s", dlerror());
-			continue;
-		}
-
-		fptr = (int (*)(RC_HOOK, const char *))
-		    dlfunc(h, RC_PLUGIN_HOOK);
-		if (fptr == NULL) {
-			eerror("%s: cannot find symbol `%s'",
-			    d->d_name, RC_PLUGIN_HOOK);
-			dlclose(h);
-		} else {
-			plugin = xmalloc(sizeof(*plugin));
-			plugin->name = xstrdup(d->d_name);
-			plugin->handle = h;
-			plugin->hook = fptr;
-			TAILQ_INSERT_TAIL(&plugins, plugin, entries);
-		}
-	}
-	closedir(dp);
-}
-
-int
-rc_waitpid(pid_t pid)
-{
-	int status;
-
-	while (waitpid(pid, &status, 0) == -1) {
-		if (errno != EINTR) {
-			status = -1;
-			break;
-		}
-	}
-	return status;
-}
-
-void
-rc_plugin_run(RC_HOOK hook, const char *value)
-{
-	PLUGIN *plugin;
-	struct sigaction sa;
-	sigset_t empty;
-	sigset_t full;
-	sigset_t old;
-	int i;
-	int flags;
-	int pfd[2];
-	pid_t pid;
-	char *buffer;
-	char *token;
-	char *p;
-	ssize_t nr;
-	int retval;
-
-	/* Don't run plugins if we're in one */
-	if (rc_in_plugin)
-		return;
-
-	/* We need to block signals until we have forked */
-	memset(&sa, 0, sizeof(sa));
-	sa.sa_handler = SIG_DFL;
-	sigemptyset(&sa.sa_mask);
-	sigemptyset(&empty);
-	sigfillset(&full);
-
-	TAILQ_FOREACH(plugin, &plugins, entries) {
-		/* We create a pipe so that plugins can affect our environment
-		 * vars, which in turn influence our scripts. */
-		if (pipe(pfd) == -1) {
-			eerror("pipe: %s", strerror(errno));
-			return;
-		}
-
-		/* Stop any scripts from inheriting us.
-		 * This is actually quite important as without this, the splash
-		 * plugin will probably hang when running in silent mode. */
-		for (i = 0; i < 2; i++)
-			if ((flags = fcntl (pfd[i], F_GETFD, 0)) < 0 ||
-			    fcntl (pfd[i], F_SETFD, flags | FD_CLOEXEC) < 0)
-				eerror("fcntl: %s", strerror(errno));
-
-		sigprocmask(SIG_SETMASK, &full, &old);
-
-		/* We run the plugin in a new process so we never crash
-		 * or otherwise affected by it */
-		if ((pid = fork()) == -1) {
-			eerror("fork: %s", strerror(errno));
-			break;
-		}
-
-		if (pid == 0) {
-			/* Restore default handlers */
-			sigaction(SIGCHLD, &sa, NULL);
-			sigaction(SIGHUP,  &sa, NULL);
-			sigaction(SIGINT,  &sa, NULL);
-			sigaction(SIGQUIT, &sa, NULL);
-			sigaction(SIGTERM, &sa, NULL);
-			sigaction(SIGUSR1, &sa, NULL);
-			sigaction(SIGWINCH, &sa, NULL);
-			sigprocmask(SIG_SETMASK, &old, NULL);
-
-			rc_in_plugin = true;
-			close(pfd[0]);
-			rc_environ_fd = fdopen(pfd[1], "w");
-			retval = plugin->hook(hook, value);
-			fclose(rc_environ_fd);
-			rc_environ_fd = NULL;
-
-			/* Just in case the plugin sets this to false */
-			rc_in_plugin = true;
-			exit(retval);
-		}
-
-		sigprocmask(SIG_SETMASK, &old, NULL);
-		close(pfd[1]);
-		buffer = xmalloc(sizeof(char) * BUFSIZ);
-		memset(buffer, 0, BUFSIZ);
-
-		while ((nr = read(pfd[0], buffer, BUFSIZ)) > 0) {
-			p = buffer;
-			while (*p && p - buffer < nr) {
-				token = strsep(&p, "=");
-				if (token) {
-					unsetenv(token);
-					if (*p) {
-						setenv(token, p, 1);
-						p += strlen(p) + 1;
-					} else
-						p++;
-				}
-			}
-		}
-
-		free(buffer);
-		close(pfd[0]);
-
-		rc_waitpid(pid);
-	}
-}
-
-void
-rc_plugin_unload(void)
-{
-	PLUGIN *plugin = TAILQ_FIRST(&plugins);
-	PLUGIN *next;
-
-	while (plugin) {
-		next = TAILQ_NEXT(plugin, entries);
-		dlclose(plugin->handle);
-		free(plugin->name);
-		free(plugin);
-		plugin = next;
-	}
-	TAILQ_INIT(&plugins);
-}