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diff --git a/src/test/test-env-util.c b/src/test/test-env-util.c
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+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+ Copyright 2016 Zbigniew Jędrzejewski-Szmek
+
+ 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 <string.h>
+
+#include "env-util.h"
+#include "string-util.h"
+#include "strv.h"
+#include "util.h"
+
+static void test_strv_env_delete(void) {
+ _cleanup_strv_free_ char **a = NULL, **b = NULL, **c = NULL, **d = NULL;
+
+ a = strv_new("FOO=BAR", "WALDO=WALDO", "WALDO=", "PIEP", "SCHLUMPF=SMURF", NULL);
+ assert_se(a);
+
+ b = strv_new("PIEP", "FOO", NULL);
+ assert_se(b);
+
+ c = strv_new("SCHLUMPF", NULL);
+ assert_se(c);
+
+ d = strv_env_delete(a, 2, b, c);
+ assert_se(d);
+
+ assert_se(streq(d[0], "WALDO=WALDO"));
+ assert_se(streq(d[1], "WALDO="));
+ assert_se(strv_length(d) == 2);
+}
+
+static void test_strv_env_unset(void) {
+ _cleanup_strv_free_ char **l = NULL;
+
+ l = strv_new("PIEP", "SCHLUMPF=SMURFF", "NANANANA=YES", NULL);
+ assert_se(l);
+
+ assert_se(strv_env_unset(l, "SCHLUMPF") == l);
+
+ assert_se(streq(l[0], "PIEP"));
+ assert_se(streq(l[1], "NANANANA=YES"));
+ assert_se(strv_length(l) == 2);
+}
+
+static void test_strv_env_set(void) {
+ _cleanup_strv_free_ char **l = NULL, **r = NULL;
+
+ l = strv_new("PIEP", "SCHLUMPF=SMURFF", "NANANANA=YES", NULL);
+ assert_se(l);
+
+ r = strv_env_set(l, "WALDO=WALDO");
+ assert_se(r);
+
+ assert_se(streq(r[0], "PIEP"));
+ assert_se(streq(r[1], "SCHLUMPF=SMURFF"));
+ assert_se(streq(r[2], "NANANANA=YES"));
+ assert_se(streq(r[3], "WALDO=WALDO"));
+ assert_se(strv_length(r) == 4);
+}
+
+static void test_strv_env_merge(void) {
+ _cleanup_strv_free_ char **a = NULL, **b = NULL, **r = NULL;
+
+ a = strv_new("FOO=BAR", "WALDO=WALDO", "WALDO=", "PIEP", "SCHLUMPF=SMURF", NULL);
+ assert_se(a);
+
+ b = strv_new("FOO=KKK", "FOO=", "PIEP=", "SCHLUMPF=SMURFF", "NANANANA=YES", NULL);
+ assert_se(b);
+
+ r = strv_env_merge(2, a, b);
+ assert_se(r);
+ assert_se(streq(r[0], "FOO="));
+ assert_se(streq(r[1], "WALDO="));
+ assert_se(streq(r[2], "PIEP"));
+ assert_se(streq(r[3], "SCHLUMPF=SMURFF"));
+ assert_se(streq(r[4], "PIEP="));
+ assert_se(streq(r[5], "NANANANA=YES"));
+ assert_se(strv_length(r) == 6);
+
+ assert_se(strv_env_clean(r) == r);
+ assert_se(streq(r[0], "FOO="));
+ assert_se(streq(r[1], "WALDO="));
+ assert_se(streq(r[2], "SCHLUMPF=SMURFF"));
+ assert_se(streq(r[3], "PIEP="));
+ assert_se(streq(r[4], "NANANANA=YES"));
+ assert_se(strv_length(r) == 5);
+}
+
+static void test_replace_env_arg(void) {
+ const char *env[] = {
+ "FOO=BAR BAR",
+ "BAR=waldo",
+ NULL
+ };
+ const char *line[] = {
+ "FOO$FOO",
+ "FOO$FOOFOO",
+ "FOO${FOO}$FOO",
+ "FOO${FOO}",
+ "${FOO}",
+ "$FOO",
+ "$FOO$FOO",
+ "${FOO}${BAR}",
+ "${FOO",
+ "FOO$$${FOO}",
+ "$$FOO${FOO}",
+ NULL
+ };
+ _cleanup_strv_free_ char **r = NULL;
+
+ r = replace_env_argv((char**) line, (char**) env);
+ assert_se(r);
+ assert_se(streq(r[0], "FOO$FOO"));
+ assert_se(streq(r[1], "FOO$FOOFOO"));
+ assert_se(streq(r[2], "FOOBAR BAR$FOO"));
+ assert_se(streq(r[3], "FOOBAR BAR"));
+ assert_se(streq(r[4], "BAR BAR"));
+ assert_se(streq(r[5], "BAR"));
+ assert_se(streq(r[6], "BAR"));
+ assert_se(streq(r[7], "BAR BARwaldo"));
+ assert_se(streq(r[8], "${FOO"));
+ assert_se(streq(r[9], "FOO$BAR BAR"));
+ assert_se(streq(r[10], "$FOOBAR BAR"));
+ assert_se(strv_length(r) == 11);
+}
+
+static void test_env_clean(void) {
+ _cleanup_strv_free_ char **e;
+
+ e = strv_new("FOOBAR=WALDO",
+ "FOOBAR=WALDO",
+ "FOOBAR",
+ "F",
+ "X=",
+ "F=F",
+ "=",
+ "=F",
+ "",
+ "0000=000",
+ "äöüß=abcd",
+ "abcd=äöüß",
+ "xyz\n=xyz",
+ "xyz=xyz\n",
+ "another=one",
+ "another=final one",
+ NULL);
+ assert_se(e);
+ assert_se(!strv_env_is_valid(e));
+ assert_se(strv_env_clean(e) == e);
+ assert_se(strv_env_is_valid(e));
+
+ assert_se(streq(e[0], "FOOBAR=WALDO"));
+ assert_se(streq(e[1], "X="));
+ assert_se(streq(e[2], "F=F"));
+ assert_se(streq(e[3], "abcd=äöüß"));
+ assert_se(streq(e[4], "another=final one"));
+ assert_se(e[5] == NULL);
+}
+
+static void test_env_name_is_valid(void) {
+ assert_se(env_name_is_valid("test"));
+
+ assert_se(!env_name_is_valid(NULL));
+ assert_se(!env_name_is_valid(""));
+ assert_se(!env_name_is_valid("xxx\a"));
+ assert_se(!env_name_is_valid("xxx\007b"));
+ assert_se(!env_name_is_valid("\007\009"));
+ assert_se(!env_name_is_valid("5_starting_with_a_number_is_wrong"));
+ assert_se(!env_name_is_valid("#¤%&?_only_numbers_letters_and_underscore_allowed"));
+}
+
+static void test_env_value_is_valid(void) {
+ assert_se(env_value_is_valid(""));
+ assert_se(env_value_is_valid("głąb kapuściany"));
+ assert_se(env_value_is_valid("printf \"\\x1b]0;<mock-chroot>\\x07<mock-chroot>\""));
+}
+
+static void test_env_assignment_is_valid(void) {
+ assert_se(env_assignment_is_valid("a="));
+ assert_se(env_assignment_is_valid("b=głąb kapuściany"));
+ assert_se(env_assignment_is_valid("c=\\007\\009\\011"));
+ assert_se(env_assignment_is_valid("e=printf \"\\x1b]0;<mock-chroot>\\x07<mock-chroot>\""));
+
+ assert_se(!env_assignment_is_valid("="));
+ assert_se(!env_assignment_is_valid("a b="));
+ assert_se(!env_assignment_is_valid("a ="));
+ assert_se(!env_assignment_is_valid(" b="));
+ /* no dots or dashes: http://tldp.org/LDP/abs/html/gotchas.html */
+ assert_se(!env_assignment_is_valid("a.b="));
+ assert_se(!env_assignment_is_valid("a-b="));
+ assert_se(!env_assignment_is_valid("\007=głąb kapuściany"));
+ assert_se(!env_assignment_is_valid("c\009=\007\009\011"));
+ assert_se(!env_assignment_is_valid("głąb=printf \"\x1b]0;<mock-chroot>\x07<mock-chroot>\""));
+}
+
+int main(int argc, char *argv[]) {
+ test_strv_env_delete();
+ test_strv_env_unset();
+ test_strv_env_set();
+ test_strv_env_merge();
+ test_replace_env_arg();
+ test_env_clean();
+ test_env_name_is_valid();
+ test_env_value_is_valid();
+ test_env_assignment_is_valid();
+
+ return 0;
+}
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