Adding upstream version 255.4.upstream/255.4

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

1 files changed, 225 insertions, 0 deletions

diff --git a/src/systemctl/systemctl-set-environment.c b/src/systemctl/systemctl-set-environment.c
new file mode 100644
index 0000000..55d1160
--- /dev/null
+++ b/src/systemctl/systemctl-set-environment.c
@@ -0,0 +1,225 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "bus-error.h"
+#include "bus-locator.h"
+#include "env-util.h"
+#include "escape.h"
+#include "systemctl-set-environment.h"
+#include "systemctl-util.h"
+#include "systemctl.h"
+
+static int json_transform_message(sd_bus_message *m, JsonVariant **ret) {
+        _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+        const char *text;
+        int r;
+
+        assert(m);
+        assert(ret);
+
+        while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &text)) > 0) {
+                _cleanup_free_ char *n = NULL;
+                const char *sep;
+
+                sep = strchr(text, '=');
+                if (!sep)
+                        return log_error_errno(SYNTHETIC_ERRNO(EUCLEAN),
+                                               "Invalid environment block");
+
+                n = strndup(text, sep - text);
+                if (!n)
+                        return log_oom();
+
+                sep++;
+
+                r = json_variant_set_field_string(&v, n, sep);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to set JSON field '%s' to '%s': %m", n, sep);
+        }
+        if (r < 0)
+                return bus_log_parse_error(r);
+
+        *ret = TAKE_PTR(v);
+        return 0;
+}
+
+static int print_variable(const char *s) {
+        const char *sep;
+        _cleanup_free_ char *esc = NULL;
+
+        sep = strchr(s, '=');
+        if (!sep)
+                return log_error_errno(SYNTHETIC_ERRNO(EUCLEAN),
+                                       "Invalid environment block");
+
+        esc = shell_maybe_quote(sep + 1, SHELL_ESCAPE_POSIX);
+        if (!esc)
+                return log_oom();
+
+        printf("%.*s=%s\n", (int)(sep-s), s, esc);
+        return 0;
+}
+
+int verb_show_environment(int argc, char *argv[], void *userdata) {
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+        const char *text;
+        sd_bus *bus;
+        int r;
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        pager_open(arg_pager_flags);
+
+        r = bus_get_property(bus, bus_systemd_mgr, "Environment", &error, &reply, "as");
+        if (r < 0)
+                return log_error_errno(r, "Failed to get environment: %s", bus_error_message(&error, r));
+
+        r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s");
+        if (r < 0)
+                return bus_log_parse_error(r);
+
+        if (OUTPUT_MODE_IS_JSON(arg_output)) {
+                _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+
+                r = json_transform_message(reply, &v);
+                if (r < 0)
+                        return r;
+
+                json_variant_dump(v, output_mode_to_json_format_flags(arg_output), stdout, NULL);
+        } else {
+                while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0) {
+                        r = print_variable(text);
+                        if (r < 0)
+                                return r;
+                }
+                if (r < 0)
+                        return bus_log_parse_error(r);
+        }
+
+        r = sd_bus_message_exit_container(reply);
+        if (r < 0)
+                return bus_log_parse_error(r);
+
+        return 0;
+}
+
+static void invalid_callback(const char *p, void *userdata) {
+        _cleanup_free_ char *t = cescape(p);
+
+        log_debug("Ignoring invalid environment assignment \"%s\".", strnull(t));
+}
+
+int verb_set_environment(int argc, char *argv[], void *userdata) {
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+        const char *method;
+        sd_bus *bus;
+        int r;
+
+        assert(argc > 1);
+        assert(argv);
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        polkit_agent_open_maybe();
+
+        method = streq(argv[0], "set-environment")
+                ? "SetEnvironment"
+                : "UnsetEnvironment";
+
+        r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, method);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_append_strv(m, strv_skip(argv, 1));
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_call(bus, m, 0, &error, NULL);
+        if (r < 0)
+                return log_error_errno(r, "Failed to set environment: %s", bus_error_message(&error, r));
+
+        return 0;
+}
+
+int verb_import_environment(int argc, char *argv[], void *userdata) {
+        _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+        sd_bus *bus;
+        int r;
+
+        r = acquire_bus(BUS_MANAGER, &bus);
+        if (r < 0)
+                return r;
+
+        polkit_agent_open_maybe();
+
+        r = bus_message_new_method_call(bus, &m, bus_systemd_mgr, "SetEnvironment");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        if (argc < 2) {
+                log_warning("Calling import-environment without a list of variable names is deprecated.");
+
+                _cleanup_strv_free_ char **copy = strv_copy(environ);
+                if (!copy)
+                        return log_oom();
+
+                strv_env_clean_with_callback(copy, invalid_callback, NULL);
+
+                STRV_FOREACH(e, copy)
+                        if (string_has_cc(*e, NULL))
+                                log_notice("Environment variable $%.*s contains control characters, importing anyway.",
+                                           (int) strcspn(*e, "="), *e);
+
+                r = sd_bus_message_append_strv(m, copy);
+
+        } else {
+                r = sd_bus_message_open_container(m, 'a', "s");
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                STRV_FOREACH(a, strv_skip(argv, 1)) {
+
+                        if (!env_name_is_valid(*a))
+                                return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+                                                       "Not a valid environment variable name: %s", *a);
+
+                        bool found = false;
+                        STRV_FOREACH(b, environ) {
+                                const char *eq;
+
+                                eq = startswith(*b, *a);
+                                if (eq && *eq == '=') {
+                                        if (string_has_cc(eq + 1, NULL))
+                                                log_notice("Environment variable $%.*s contains control characters, importing anyway.",
+                                                           (int) (eq - *b), *b);
+
+                                        r = sd_bus_message_append(m, "s", *b);
+                                        if (r < 0)
+                                                return bus_log_create_error(r);
+
+                                        found = true;
+                                        break;
+                                }
+                        }
+
+                        if (!found)
+                                log_notice("Environment variable $%s not set, ignoring.", *a);
+                }
+
+                r = sd_bus_message_close_container(m);
+        }
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_call(bus, m, 0, &error, NULL);
+        if (r < 0)
+                return log_error_errno(r, "Failed to import environment: %s", bus_error_message(&error, r));
+
+        return 0;
+}