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From 5813180a75aa1ef90f6d3459fc5beb099b815cfb Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 30 Apr 2020 18:32:44 +0200
Subject: [PATCH] tree-wide: port various bits over to locale_is_installed()
(cherry picked from commit a00a78b84e2ab352b3144bfae8bc578d172303be)
Resolves: #1755287
---
src/firstboot/firstboot.c | 30 ++++++++------
src/locale/localed.c | 87 ++++++++++++++++++++++++---------------
2 files changed, 71 insertions(+), 46 deletions(-)
diff --git a/src/firstboot/firstboot.c b/src/firstboot/firstboot.c
index a98e53b3a3..7e177a50fa 100644
--- a/src/firstboot/firstboot.c
+++ b/src/firstboot/firstboot.c
@@ -192,6 +192,14 @@ static int prompt_loop(const char *text, char **l, bool (*is_valid)(const char *
}
}
+static bool locale_is_ok(const char *name) {
+
+ if (arg_root)
+ return locale_is_valid(name);
+
+ return locale_is_installed(name) > 0;
+}
+
static int prompt_locale(void) {
_cleanup_strv_free_ char **locales = NULL;
int r;
@@ -215,14 +223,14 @@ static int prompt_locale(void) {
putchar('\n');
- r = prompt_loop("Please enter system locale name or number", locales, locale_is_valid, &arg_locale);
+ r = prompt_loop("Please enter system locale name or number", locales, locale_is_ok, &arg_locale);
if (r < 0)
return r;
if (isempty(arg_locale))
return 0;
- r = prompt_loop("Please enter system message locale name or number", locales, locale_is_valid, &arg_locale_messages);
+ r = prompt_loop("Please enter system message locale name or number", locales, locale_is_ok, &arg_locale_messages);
if (r < 0)
return r;
@@ -780,11 +788,6 @@ static int parse_argv(int argc, char *argv[]) {
break;
case ARG_LOCALE:
- if (!locale_is_valid(optarg)) {
- log_error("Locale %s is not valid.", optarg);
- return -EINVAL;
- }
-
r = free_and_strdup(&arg_locale, optarg);
if (r < 0)
return log_oom();
@@ -792,11 +795,6 @@ static int parse_argv(int argc, char *argv[]) {
break;
case ARG_LOCALE_MESSAGES:
- if (!locale_is_valid(optarg)) {
- log_error("Locale %s is not valid.", optarg);
- return -EINVAL;
- }
-
r = free_and_strdup(&arg_locale_messages, optarg);
if (r < 0)
return log_oom();
@@ -922,6 +920,14 @@ static int parse_argv(int argc, char *argv[]) {
assert_not_reached("Unhandled option");
}
+ /* We check if the specified locale strings are valid down here, so that we can take --root= into
+ * account when looking for the locale files. */
+
+ if (arg_locale && !locale_is_ok(arg_locale))
+ return log_error_errno(EINVAL, "Locale %s is not installed.", arg_locale);
+ if (arg_locale_messages && !locale_is_ok(arg_locale_messages))
+ return log_error_errno(EINVAL, "Locale %s is not installed.", arg_locale_messages);
+
return 1;
}
diff --git a/src/locale/localed.c b/src/locale/localed.c
index 253973fd49..d6ed40babe 100644
--- a/src/locale/localed.c
+++ b/src/locale/localed.c
@@ -259,18 +259,57 @@ static void locale_free(char ***l) {
(*l)[p] = mfree((*l)[p]);
}
+static int process_locale_list_item(
+ const char *assignment,
+ char *new_locale[static _VARIABLE_LC_MAX],
+ sd_bus_error *error) {
+
+ assert(assignment);
+ assert(new_locale);
+
+ for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++) {
+ const char *name, *e;
+
+ assert_se(name = locale_variable_to_string(p));
+
+ e = startswith(assignment, name);
+ if (!e)
+ continue;
+
+ if (*e != '=')
+ continue;
+
+ e++;
+
+ if (!locale_is_valid(e))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale %s is not valid, refusing.", e);
+ if (locale_is_installed(e) <= 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale %s not installed, refusing.", e);
+ if (new_locale[p])
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale variable %s set twice, refusing.", name);
+
+ new_locale[p] = strdup(e);
+ if (!new_locale[p])
+ return -ENOMEM;
+
+ return 0;
+ }
+
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Locale assignment %s not valid, refusing.", assignment);
+}
+
static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *error) {
Context *c = userdata;
_cleanup_strv_free_ char **settings = NULL, **l = NULL;
char *new_locale[_VARIABLE_LC_MAX] = {}, **i;
_cleanup_(locale_free) _unused_ char **dummy = new_locale;
bool modified = false;
- int interactive, p, r;
+ int interactive, r;
assert(m);
assert(c);
- r = bus_message_read_strv_extend(m, &l);
+ r = sd_bus_message_read_strv(m, &l);
if (r < 0)
return r;
@@ -279,11 +318,13 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
return r;
/* If single locale without variable name is provided, then we assume it is LANG=. */
- if (strv_length(l) == 1 && !strchr(*l, '=')) {
- if (!locale_is_valid(*l))
- return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
+ if (strv_length(l) == 1 && !strchr(l[0], '=')) {
+ if (!locale_is_valid(l[0]))
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid locale specification: %s", l[0]);
+ if (locale_is_installed(l[0]) <= 0)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified locale is not installed: %s", l[0]);
- new_locale[VARIABLE_LANG] = strdup(*l);
+ new_locale[VARIABLE_LANG] = strdup(l[0]);
if (!new_locale[VARIABLE_LANG])
return -ENOMEM;
@@ -292,31 +333,9 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
/* Check whether a variable is valid */
STRV_FOREACH(i, l) {
- bool valid = false;
-
- for (p = 0; p < _VARIABLE_LC_MAX; p++) {
- size_t k;
- const char *name;
-
- name = locale_variable_to_string(p);
- assert(name);
-
- k = strlen(name);
- if (startswith(*i, name) &&
- (*i)[k] == '=' &&
- locale_is_valid((*i) + k + 1)) {
- valid = true;
-
- new_locale[p] = strdup((*i) + k + 1);
- if (!new_locale[p])
- return -ENOMEM;
-
- break;
- }
- }
-
- if (!valid)
- return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid Locale data.");
+ r = process_locale_list_item(*i, new_locale, error);
+ if (r < 0)
+ return r;
}
/* If LANG was specified, but not LANGUAGE, check if we should
@@ -339,7 +358,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
}
/* Merge with the current settings */
- for (p = 0; p < _VARIABLE_LC_MAX; p++)
+ for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++)
if (!isempty(c->locale[p]) && isempty(new_locale[p])) {
new_locale[p] = strdup(c->locale[p]);
if (!new_locale[p])
@@ -348,7 +367,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
locale_simplify(new_locale);
- for (p = 0; p < _VARIABLE_LC_MAX; p++)
+ for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++)
if (!streq_ptr(c->locale[p], new_locale[p])) {
modified = true;
break;
@@ -373,7 +392,7 @@ static int method_set_locale(sd_bus_message *m, void *userdata, sd_bus_error *er
if (r == 0)
return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
- for (p = 0; p < _VARIABLE_LC_MAX; p++)
+ for (LocaleVariable p = 0; p < _VARIABLE_LC_MAX; p++)
free_and_replace(c->locale[p], new_locale[p]);
r = locale_write_data(c, &settings);
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