[systemd-commits] 3 commits - .gitignore Makefile.am TODO src/escape

Lennart Poettering lennart at kemper.freedesktop.org
Mon Jul 7 13:23:50 PDT 2014


 .gitignore          |    1 
 Makefile.am         |   10 +-
 TODO                |    4 
 src/escape/Makefile |    1 
 src/escape/escape.c |  239 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 254 insertions(+), 1 deletion(-)

New commits:
commit a1948c7bfeb87b54bc7715a44490c01593ee6e23
Author: Lennart Poettering <lennart at poettering.net>
Date:   Mon Jul 7 22:23:00 2014 +0200

    escape: beef up new systemd-escape tool
    
    Add various options for making it easy unescape, or mangle, or format as
    template instance or append a suffix.

diff --git a/.gitignore b/.gitignore
index e3ddbf8..52b78ae 100644
--- a/.gitignore
+++ b/.gitignore
@@ -64,6 +64,7 @@
 /systemd-delta
 /systemd-detect-virt
 /systemd-efi-boot-generator
+/systemd-escape
 /systemd-firstboot
 /systemd-fsck
 /systemd-fstab-generator
diff --git a/src/escape/Makefile b/src/escape/Makefile
new file mode 120000
index 0000000..d0b0e8e
--- /dev/null
+++ b/src/escape/Makefile
@@ -0,0 +1 @@
+../Makefile
\ No newline at end of file
diff --git a/src/escape/escape.c b/src/escape/escape.c
index 0a59a05..ae0c183 100644
--- a/src/escape/escape.c
+++ b/src/escape/escape.c
@@ -21,26 +21,219 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <getopt.h>
 
 #include "log.h"
 #include "unit-name.h"
+#include "build.h"
+#include "strv.h"
 
-int main(int argc, char *argv[]) {
-        char *escaped_name = NULL;
+static enum {
+        ACTION_ESCAPE,
+        ACTION_UNESCAPE,
+        ACTION_MANGLE
+} arg_action = ACTION_ESCAPE;
+static const char *arg_suffix = NULL;
+static const char *arg_template = NULL;
+static bool arg_path = false;
+
+static int help(void) {
+
+        printf("%s [OPTIONS...] [NAME...]\n\n"
+               "Show system and user paths.\n\n"
+               "  -h --help               Show this help\n"
+               "     --version            Show package version\n"
+               "     --suffix=SUFFIX      Unit suffix to append to escaped strings\n"
+               "     --template=TEMPLATE  Insert strings as instance into template\n"
+               "  -u --unescape           Unescape strings\n"
+               "  -m --mangle             Mangle strings\n"
+               "  -p --path               When escaping/unescaping assume the string is a path\n",
+               program_invocation_short_name);
+
+        return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+        enum {
+                ARG_VERSION = 0x100,
+                ARG_SUFFIX,
+                ARG_TEMPLATE
+        };
+
+        static const struct option options[] = {
+                { "help",      no_argument,       NULL, 'h'           },
+                { "version",   no_argument,       NULL, ARG_VERSION   },
+                { "suffix",    required_argument, NULL, ARG_SUFFIX    },
+                { "template",  required_argument, NULL, ARG_TEMPLATE  },
+                { "unescape",  no_argument,       NULL, 'u'           },
+                { "mangle",    no_argument,       NULL, 'm'           },
+                { "path",      no_argument,       NULL, 'p'           },
+                {}
+        };
+
+        int c;
+
+        assert(argc >= 0);
+        assert(argv);
+
+        while ((c = getopt_long(argc, argv, "hump", options, NULL)) >= 0) {
+
+                switch (c) {
+
+                case 'h':
+                        return help();
+
+                case ARG_VERSION:
+                        puts(PACKAGE_STRING);
+                        puts(SYSTEMD_FEATURES);
+                        return 0;
+
+                case ARG_SUFFIX:
+
+                        if (unit_type_from_string(optarg) < 0) {
+                                log_error("Invalid unit suffix type %s.", optarg);
+                                return -EINVAL;
+                        }
+
+                        arg_suffix = optarg;
+                        break;
+
+                case ARG_TEMPLATE:
+
+                        if (!unit_name_is_valid(optarg, true) || !unit_name_is_template(optarg)) {
+                                log_error("Template name %s is not valid.", optarg);
+                                return -EINVAL;
+                        }
+
+                        arg_template = optarg;
+                        break;
+
+                case 'u':
+                        arg_action = ACTION_UNESCAPE;
+                        break;
+
+                case 'm':
+                        arg_action = ACTION_MANGLE;
+                        break;
+
+                case 'p':
+                        arg_path = true;
+                        break;
+
+                case '?':
+                        return -EINVAL;
+
+                default:
+                        assert_not_reached("Unhandled option");
+                }
+        }
 
-        if (argc != 2) {
-                log_error("This program requires on argument.");
-                return EXIT_FAILURE;
+        if (optind >= argc) {
+                log_error("Not enough arguments.");
+                return -EINVAL;
         }
 
-        escaped_name = unit_name_escape(argv[1]);
+        if (arg_template && arg_suffix) {
+                log_error("--suffix= and --template= may not be combined.");
+                return -EINVAL;
+        }
+
+        if ((arg_template || arg_suffix) && arg_action != ACTION_ESCAPE) {
+                log_error("--suffix= and --template= are not compatible with --unescape or --mangle.");
+                return -EINVAL;
+        }
+
+        if (arg_path && !IN_SET(arg_action, ACTION_ESCAPE, ACTION_UNESCAPE)) {
+                log_error("--path may not be combined with --mangle.");
+                return -EINVAL;
+        }
+
+        return 1;
+}
+
+int main(int argc, char *argv[]) {
+        char **i;
+        int r;
+
+        log_parse_environment();
+        log_open();
+
+        r = parse_argv(argc, argv);
+        if (r <= 0)
+                goto finish;
+
+        STRV_FOREACH(i, argv + optind) {
+                _cleanup_free_ char *e = NULL;
+
+                switch (arg_action) {
+
+                case ACTION_ESCAPE:
+                        if (arg_path)
+                                e = unit_name_path_escape(*i);
+                        else
+                                e = unit_name_escape(*i);
+
+                        if (!e) {
+                                r = log_oom();
+                                goto finish;
+                        }
+
+                        if (arg_template) {
+                                char *x;
+
+                                x = unit_name_replace_instance(arg_template, e);
+                                if (!x) {
+                                        r = log_oom();
+                                        goto finish;
+                                }
+
+                                free(e);
+                                e = x;
+                        } else if (arg_suffix) {
+                                char *x;
+
+                                x = strjoin(e, ".", arg_suffix, NULL);
+                                if (!x) {
+                                        r = log_oom();
+                                        goto finish;
+                                }
+
+                                free(e);
+                                e = x;
+                        }
+
+                        break;
+
+                case ACTION_UNESCAPE:
+                        if (arg_path)
+                                e = unit_name_path_unescape(*i);
+                        else
+                                e = unit_name_unescape(*i);
+
+                        if (!e) {
+                                r = log_oom();
+                                goto finish;
+                        }
+                        break;
+
+                case ACTION_MANGLE:
+                        e = unit_name_mangle(*i, MANGLE_NOGLOB);
+                        if (!e) {
+                                r = log_oom();
+                                goto finish;
+                        }
+                        break;
+                }
+
+                if (i != argv+optind)
+                        fputc(' ', stdout);
 
-        if (!escaped_name) {
-                log_error("Failed to escape name.");
-                return EXIT_FAILURE;
+                fputs(e, stdout);
         }
 
-        printf("%s", escaped_name);
+        fputc('\n', stdout);
 
-        return EXIT_SUCCESS;
+finish:
+        return r ? EXIT_FAILURE : EXIT_SUCCESS;
 }

commit b1a5a9989ada9b3738d71605f051ff393d41f2ff
Author: Michael Biebl <biebl at debian.org>
Date:   Wed Jun 4 01:57:11 2014 +0200

    add new systemd-escape tool

diff --git a/Makefile.am b/Makefile.am
index 17f2d9e..77a976a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -347,7 +347,8 @@ bin_PROGRAMS = \
 	systemd-delta \
 	systemd-analyze \
 	systemd-run \
-	systemd-path
+	systemd-path \
+	systemd-escape
 
 dist_bin_SCRIPTS = \
 	src/kernel-install/kernel-install
@@ -2108,6 +2109,13 @@ systemd_cgroups_agent_LDADD = \
 	libsystemd-shared.la
 
 # ------------------------------------------------------------------------------
+systemd_escape_SOURCES = \
+	src/escape/escape.c
+
+systemd_escape_LDADD = \
+	libsystemd-shared.la
+
+# -----------------------------------------------------------------------------
 systemctl_SOURCES = \
 	src/systemctl/systemctl.c
 
diff --git a/src/escape/escape.c b/src/escape/escape.c
new file mode 100644
index 0000000..0a59a05
--- /dev/null
+++ b/src/escape/escape.c
@@ -0,0 +1,46 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2014 Michael Biebl
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "log.h"
+#include "unit-name.h"
+
+int main(int argc, char *argv[]) {
+        char *escaped_name = NULL;
+
+        if (argc != 2) {
+                log_error("This program requires on argument.");
+                return EXIT_FAILURE;
+        }
+
+        escaped_name = unit_name_escape(argv[1]);
+
+        if (!escaped_name) {
+                log_error("Failed to escape name.");
+                return EXIT_FAILURE;
+        }
+
+        printf("%s", escaped_name);
+
+        return EXIT_SUCCESS;
+}

commit 58f55364fa00a6a4706df2c4a01c6967f432e531
Author: Lennart Poettering <lennart at poettering.net>
Date:   Mon Jul 7 21:20:29 2014 +0200

    update TODO

diff --git a/TODO b/TODO
index 9929ea3..857e2fd 100644
--- a/TODO
+++ b/TODO
@@ -20,8 +20,12 @@ External:
 
 * Fedora: move kernel image to /usr/lib/modules/, kernel-install will take care of populating /boot
 
+* Fedora: remove /etc/resolv.conf tmpfiles hack
+
 Features:
 
+* the resolv.conf tmpfiles line should be covered by ENABLE_NETWORKD...
+
 * sysusers: also create entries in /etc/shadow, /etc/gshadow
 
 * Add a new verb "systemctl top"



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