Adding upstream version 3.4.23.upstream/3.4.23upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 216 insertions, 0 deletions

diff --git a/src/postkick/postkick.c b/src/postkick/postkick.c
new file mode 100644
index 0000000..dde3dbf
--- /dev/null
+++ b/src/postkick/postkick.c
@@ -0,0 +1,216 @@
+/*++
+/* NAME
+/*	postkick 1
+/* SUMMARY
+/*	kick a Postfix service
+/* SYNOPSIS
+/* .fi
+/*	\fBpostkick\fR [\fB-c \fIconfig_dir\fR] [\fB-v\fR]
+/*	\fIclass service request\fR
+/* DESCRIPTION
+/*	The \fBpostkick\fR(1) command sends \fIrequest\fR to the
+/*	specified \fIservice\fR over a local transport channel.
+/*	This command makes Postfix private IPC accessible
+/*	for use in, for example, shell scripts.
+/*
+/*	Options:
+/* .IP "\fB-c\fR \fIconfig_dir\fR"
+/*	Read the \fBmain.cf\fR configuration file in the named directory
+/*	instead of the default configuration directory.
+/* .IP \fB-v\fR
+/*	Enable verbose logging for debugging purposes. Multiple \fB-v\fR
+/*	options make the software increasingly verbose.
+/* .PP
+/*	Arguments:
+/* .IP \fIclass\fR
+/*	Name of a class of local transport channel endpoints,
+/*	either \fBpublic\fR (accessible by any local user) or
+/*	\fBprivate\fR (administrative access only).
+/* .IP \fIservice\fR
+/*	The name of a local transport endpoint within the named class.
+/* .IP \fIrequest\fR
+/*	A string. The list of valid requests is service-specific.
+/* DIAGNOSTICS
+/*	Problems and transactions are logged to the standard error
+/*	stream.
+/* ENVIRONMENT
+/* .ad
+/* .fi
+/* .IP \fBMAIL_CONFIG\fR
+/*	Directory with Postfix configuration files.
+/* .IP \fBMAIL_VERBOSE\fR
+/*	Enable verbose logging for debugging purposes.
+/* CONFIGURATION PARAMETERS
+/* .ad
+/* .fi
+/*	The following \fBmain.cf\fR parameters are especially relevant to
+/*	this program.
+/*	The text below provides only a parameter summary. See
+/*	\fBpostconf\fR(5) for more details including examples.
+/* .IP "\fBconfig_directory (see 'postconf -d' output)\fR"
+/*	The default location of the Postfix main.cf and master.cf
+/*	configuration files.
+/* .IP "\fBapplication_event_drain_time (100s)\fR"
+/*	How long the \fBpostkick\fR(1) command waits for a request to enter the
+/*	Postfix daemon process input buffer before giving up.
+/* .IP "\fBimport_environment (see 'postconf -d' output)\fR"
+/*	The list of environment parameters that a privileged Postfix
+/*	process will import from a non-Postfix parent process, or name=value
+/*	environment overrides.
+/* .IP "\fBqueue_directory (see 'postconf -d' output)\fR"
+/*	The location of the Postfix top-level queue directory.
+/* FILES
+/*	/var/spool/postfix/private, private class endpoints
+/*	/var/spool/postfix/public, public class endpoints
+/* SEE ALSO
+/*	qmgr(8), queue manager trigger protocol
+/*	pickup(8), local pickup daemon
+/*	postconf(5), configuration parameters
+/* LICENSE
+/* .ad
+/* .fi
+/*	The Secure Mailer license must be distributed with this software.
+/* AUTHOR(S)
+/*	Wietse Venema
+/*	IBM T.J. Watson Research
+/*	P.O. Box 704
+/*	Yorktown Heights, NY 10598, USA
+/*
+/*	Wietse Venema
+/*	Google, Inc.
+/*	111 8th Avenue
+/*	New York, NY 10011, USA
+/*--*/
+
+/* System library. */
+
+#include <sys_defs.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <mymalloc.h>
+#include <vstream.h>
+#include <msg_vstream.h>
+#include <safe.h>
+#include <events.h>
+#include <warn_stat.h>
+#include <clean_env.h>
+
+/* Global library. */
+
+#include <mail_proto.h>
+#include <mail_params.h>
+#include <mail_version.h>
+#include <mail_conf.h>
+#include <mail_parm_split.h>
+
+static NORETURN usage(char *myname)
+{
+    msg_fatal("usage: %s [-c config_dir] [-v] class service request", myname);
+}
+
+MAIL_VERSION_STAMP_DECLARE;
+
+int     main(int argc, char **argv)
+{
+    char   *class;
+    char   *service;
+    char   *request;
+    int     fd;
+    struct stat st;
+    char   *slash;
+    int     c;
+    ARGV   *import_env;
+
+    /*
+     * Fingerprint executables and core dumps.
+     */
+    MAIL_VERSION_STAMP_ALLOCATE;
+
+    /*
+     * To minimize confusion, make sure that the standard file descriptors
+     * are open before opening anything else. XXX Work around for 44BSD where
+     * fstat can return EBADF on an open file descriptor.
+     */
+    for (fd = 0; fd < 3; fd++)
+	if (fstat(fd, &st) == -1
+	    && (close(fd), open("/dev/null", O_RDWR, 0)) != fd)
+	    msg_fatal("open /dev/null: %m");
+
+    /*
+     * Process environment options as early as we can.
+     */
+    if (safe_getenv(CONF_ENV_VERB))
+	msg_verbose = 1;
+
+    /*
+     * Initialize. Set up logging. Read the global configuration file after
+     * parsing command-line arguments.
+     */
+    if ((slash = strrchr(argv[0], '/')) != 0 && slash[1])
+	argv[0] = slash + 1;
+    msg_vstream_init(argv[0], VSTREAM_ERR);
+    set_mail_conf_str(VAR_PROCNAME, var_procname = mystrdup(argv[0]));
+
+    /*
+     * Parse JCL.
+     */
+    while ((c = GETOPT(argc, argv, "c:v")) > 0) {
+	switch (c) {
+	default:
+	    usage(argv[0]);
+	case 'c':
+	    if (setenv(CONF_ENV_PATH, optarg, 1) < 0)
+		msg_fatal("out of memory");
+	    break;
+	case 'v':
+	    msg_verbose++;
+	    break;
+	}
+    }
+    if (argc != optind + 3)
+	usage(argv[0]);
+    class = argv[optind];
+    service = argv[optind + 1];
+    request = argv[optind + 2];
+
+    /*
+     * Finish initializations.
+     */
+    mail_conf_read();
+    /* Enforce consistent operation of different Postfix parts. */
+    import_env = mail_parm_split(VAR_IMPORT_ENVIRON, var_import_environ);
+    update_env(import_env->argv);
+    argv_free(import_env);
+    if (chdir(var_queue_dir))
+	msg_fatal("chdir %s: %m", var_queue_dir);
+
+    /*
+     * Kick the service.
+     */
+    if (mail_trigger(class, service, request, strlen(request)) < 0) {
+	msg_warn("Cannot contact class %s service %s - perhaps the mail system is down",
+		 class, service);
+	exit(1);
+    }
+
+    /*
+     * Problem: With triggers over full duplex (i.e. non-FIFO) channels, we
+     * must avoid closing the channel before the server has received the
+     * request. Otherwise some hostile kernel may throw away the request.
+     * 
+     * Solution: The trigger routine registers a read event handler that runs
+     * when the server closes the channel. The event_drain() routine waits
+     * for the event handler to run, but gives up when it takes too long.
+     */
+    else {
+	event_drain(var_event_drain);
+	exit(0);
+    }
+}