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-rw-r--r--src/ask-password/ask-password.c2
-rw-r--r--src/basic/strv.c9
-rw-r--r--src/basic/strv.h4
-rw-r--r--src/basic/util.c19
-rw-r--r--src/basic/util.h7
-rw-r--r--src/core/dbus-execute.c34
-rw-r--r--src/core/dbus-unit.c2
-rw-r--r--src/core/load-fragment.c1
-rw-r--r--src/core/manager.c4
-rw-r--r--src/core/service.c2
-rw-r--r--src/cryptsetup/cryptsetup.c47
-rw-r--r--src/firstboot/firstboot.c20
-rw-r--r--src/journal/journal-vacuum.c3
-rw-r--r--src/journal/journald-server.c4
-rw-r--r--src/reply-password/reply-password.c19
-rw-r--r--src/shared/ask-password-api.c17
-rw-r--r--src/timesync/timesyncd.c8
-rw-r--r--src/tty-ask-password-agent/tty-ask-password-agent.c97
18 files changed, 187 insertions, 112 deletions
diff --git a/src/ask-password/ask-password.c b/src/ask-password/ask-password.c
index 1a69d15908..a544866000 100644
--- a/src/ask-password/ask-password.c
+++ b/src/ask-password/ask-password.c
@@ -144,7 +144,7 @@ static int parse_argv(int argc, char *argv[]) {
}
int main(int argc, char *argv[]) {
- _cleanup_strv_free_ char **l = NULL;
+ _cleanup_strv_free_erase_ char **l = NULL;
usec_t timeout;
char **p;
int r;
diff --git a/src/basic/strv.c b/src/basic/strv.c
index b66c176487..501d022cb9 100644
--- a/src/basic/strv.c
+++ b/src/basic/strv.c
@@ -86,6 +86,15 @@ char **strv_free(char **l) {
return NULL;
}
+char **strv_free_erase(char **l) {
+ char **i;
+
+ STRV_FOREACH(i, l)
+ string_erase(*i);
+
+ return strv_free(l);
+}
+
char **strv_copy(char * const *l) {
char **r, **k;
diff --git a/src/basic/strv.h b/src/basic/strv.h
index e49f443835..a5dc696a87 100644
--- a/src/basic/strv.h
+++ b/src/basic/strv.h
@@ -35,6 +35,10 @@ char **strv_free(char **l);
DEFINE_TRIVIAL_CLEANUP_FUNC(char**, strv_free);
#define _cleanup_strv_free_ _cleanup_(strv_freep)
+char **strv_free_erase(char **l);
+DEFINE_TRIVIAL_CLEANUP_FUNC(char**, strv_free_erase);
+#define _cleanup_strv_free_erase_ _cleanup_(strv_free_erasep)
+
void strv_clear(char **l);
char **strv_copy(char * const *l);
diff --git a/src/basic/util.c b/src/basic/util.c
index 460e74061a..3e90456dd3 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -6829,3 +6829,22 @@ bool fdname_is_valid(const char *s) {
bool oom_score_adjust_is_valid(int oa) {
return oa >= OOM_SCORE_ADJ_MIN && oa <= OOM_SCORE_ADJ_MAX;
}
+
+void string_erase(char *x) {
+
+ if (!x)
+ return;
+
+ /* A delicious drop of snake-oil! To be called on memory where
+ * we stored passphrases or so, after we used them. */
+
+ memory_erase(x, strlen(x));
+}
+
+char *string_free_erase(char *s) {
+ if (!s)
+ return NULL;
+
+ string_erase(s);
+ return mfree(s);
+}
diff --git a/src/basic/util.h b/src/basic/util.h
index ac74650ff6..ff39eae715 100644
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -949,3 +949,10 @@ int version(void);
bool fdname_is_valid(const char *s);
bool oom_score_adjust_is_valid(int oa);
+
+#define memory_erase(p, l) memset((p), 'x', (l))
+void string_erase(char *x);
+
+char *string_free_erase(char *s);
+DEFINE_TRIVIAL_CLEANUP_FUNC(char *, string_free_erase);
+#define _cleanup_string_free_erase_ _cleanup_(string_free_erasep)
diff --git a/src/core/dbus-execute.c b/src/core/dbus-execute.c
index b71e5ad300..a286149b53 100644
--- a/src/core/dbus-execute.c
+++ b/src/core/dbus-execute.c
@@ -1208,8 +1208,9 @@ int bus_exec_context_set_transient_property(
_cleanup_free_ char *joined = NULL;
_cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char **l = NULL;
size_t size = 0;
- bool empty_array = true;
+ char **i;
r = sd_bus_message_enter_container(message, 'a', "(sb)");
if (r < 0)
@@ -1219,18 +1220,13 @@ int bus_exec_context_set_transient_property(
if (!f)
return -ENOMEM;
- if (mode != UNIT_CHECK) {
- char **buf;
- STRV_FOREACH(buf, c->environment_files)
- fprintf(f, "EnvironmentFile=%s\n", *buf);
- }
+ STRV_FOREACH(i, c->environment_files)
+ fprintf(f, "EnvironmentFile=%s\n", *i);
while ((r = sd_bus_message_enter_container(message, 'r', "sb")) > 0) {
const char *path;
int b;
- empty_array = false;
-
r = sd_bus_message_read(message, "sb", &path, &b);
if (r < 0)
return r;
@@ -1247,12 +1243,12 @@ int bus_exec_context_set_transient_property(
char *buf = NULL;
buf = strjoin(b ? "-" : "", path, NULL);
- if (buf == NULL)
+ if (!buf)
return -ENOMEM;
fprintf(f, "EnvironmentFile=%s\n", buf);
- r = strv_consume(&c->environment_files, buf);
+ r = strv_consume(&l, buf);
if (r < 0)
return r;
}
@@ -1260,14 +1256,22 @@ int bus_exec_context_set_transient_property(
if (r < 0)
return r;
- fflush(f);
+ r = fflush_and_check(f);
+ if (r < 0)
+ return r;
- if (mode != UNIT_CHECK)
- if (empty_array) {
- strv_clear(c->environment_files);
+ if (mode != UNIT_CHECK) {
+ if (strv_isempty(l)) {
+ c->environment_files = strv_free(c->environment_files);
unit_write_drop_in_private(u, mode, name, "EnvironmentFile=\n");
- } else
+ } else {
+ r = strv_extend_strv(&c->environment_files, l, true);
+ if (r < 0)
+ return r;
+
unit_write_drop_in_private(u, mode, name, joined);
+ }
+ }
r = sd_bus_message_exit_container(message);
if (r < 0)
diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
index cd88a87340..52daf11610 100644
--- a/src/core/dbus-unit.c
+++ b/src/core/dbus-unit.c
@@ -679,7 +679,7 @@ const sd_bus_vtable bus_unit_vtable[] = {
SD_BUS_PROPERTY("Asserts", "a(sbbsi)", property_get_conditions, offsetof(Unit, asserts), 0),
SD_BUS_PROPERTY("LoadError", "(ss)", property_get_load_error, 0, SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Transient", "b", bus_property_get_bool, offsetof(Unit, transient), SD_BUS_VTABLE_PROPERTY_CONST),
- SD_BUS_PROPERTY("NetClass", "u", bus_property_get_unsigned, offsetof(Unit, cgroup_netclass_id), 0),
+ SD_BUS_PROPERTY("NetClass", "u", NULL, offsetof(Unit, cgroup_netclass_id), 0),
SD_BUS_METHOD("Start", "s", "o", method_start, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Stop", "s", "o", method_stop, SD_BUS_VTABLE_UNPRIVILEGED),
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index b1d4c6b57d..ba39df6877 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -2742,6 +2742,7 @@ int config_parse_tasks_max(
return 0;
}
+ c->tasks_max = u;
return 0;
}
diff --git a/src/core/manager.c b/src/core/manager.c
index b2d56e88a7..6ae836148d 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -2952,9 +2952,9 @@ void manager_set_show_status(Manager *m, ShowStatus mode) {
m->show_status = mode;
if (mode > 0)
- touch("/run/systemd/show-status");
+ (void) touch("/run/systemd/show-status");
else
- unlink("/run/systemd/show-status");
+ (void) unlink("/run/systemd/show-status");
}
static bool manager_get_show_status(Manager *m, StatusType type) {
diff --git a/src/core/service.c b/src/core/service.c
index 1e4f707bf4..c77d4dc796 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -1215,7 +1215,7 @@ static int service_spawn(
if (is_control && UNIT(s)->cgroup_path) {
path = strjoina(UNIT(s)->cgroup_path, "/control");
- cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
+ (void) cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
} else
path = UNIT(s)->cgroup_path;
diff --git a/src/cryptsetup/cryptsetup.c b/src/cryptsetup/cryptsetup.c
index cc03ad3ca8..ecc1273eec 100644
--- a/src/cryptsetup/cryptsetup.c
+++ b/src/cryptsetup/cryptsetup.c
@@ -312,15 +312,16 @@ static char *disk_mount_point(const char *label) {
return NULL;
}
-static int get_password(const char *vol, const char *src, usec_t until, bool accept_cached, char ***passwords) {
+static int get_password(const char *vol, const char *src, usec_t until, bool accept_cached, char ***ret) {
_cleanup_free_ char *description = NULL, *name_buffer = NULL, *mount_point = NULL, *maj_min = NULL, *text = NULL, *escaped_name = NULL;
+ _cleanup_strv_free_erase_ char **passwords = NULL;
const char *name = NULL;
char **p, *id;
int r = 0;
assert(vol);
assert(src);
- assert(passwords);
+ assert(ret);
description = disk_description(src);
mount_point = disk_mount_point(vol);
@@ -360,14 +361,16 @@ static int get_password(const char *vol, const char *src, usec_t until, bool acc
id = strjoina("cryptsetup:", escaped_name);
- r = ask_password_auto(text, "drive-harddisk", id, "cryptsetup", until, ASK_PASSWORD_PUSH_CACHE|(accept_cached ? ASK_PASSWORD_ACCEPT_CACHED : 0), passwords);
+ r = ask_password_auto(text, "drive-harddisk", id, "cryptsetup", until,
+ ASK_PASSWORD_PUSH_CACHE | (accept_cached*ASK_PASSWORD_ACCEPT_CACHED),
+ &passwords);
if (r < 0)
return log_error_errno(r, "Failed to query password: %m");
if (arg_verify) {
- _cleanup_strv_free_ char **passwords2 = NULL;
+ _cleanup_strv_free_erase_ char **passwords2 = NULL;
- assert(strv_length(*passwords) == 1);
+ assert(strv_length(passwords) == 1);
if (asprintf(&text, "Please enter passphrase for disk %s! (verification)", name) < 0)
return log_oom();
@@ -380,22 +383,23 @@ static int get_password(const char *vol, const char *src, usec_t until, bool acc
assert(strv_length(passwords2) == 1);
- if (!streq(*passwords[0], passwords2[0])) {
+ if (!streq(passwords[0], passwords2[0])) {
log_warning("Passwords did not match, retrying.");
return -EAGAIN;
}
}
- strv_uniq(*passwords);
+ strv_uniq(passwords);
- STRV_FOREACH(p, *passwords) {
+ STRV_FOREACH(p, passwords) {
char *c;
if (strlen(*p)+1 >= arg_key_size)
continue;
/* Pad password if necessary */
- if (!(c = new(char, arg_key_size)))
+ c = new(char, arg_key_size);
+ if (!c)
return log_oom();
strncpy(c, *p, arg_key_size);
@@ -403,14 +407,19 @@ static int get_password(const char *vol, const char *src, usec_t until, bool acc
*p = c;
}
+ *ret = passwords;
+ passwords = NULL;
+
return 0;
}
-static int attach_tcrypt(struct crypt_device *cd,
- const char *name,
- const char *key_file,
- char **passwords,
- uint32_t flags) {
+static int attach_tcrypt(
+ struct crypt_device *cd,
+ const char *name,
+ const char *key_file,
+ char **passwords,
+ uint32_t flags) {
+
int r = 0;
_cleanup_free_ char *passphrase = NULL;
struct crypt_params_tcrypt params = {
@@ -520,8 +529,7 @@ static int attach_luks_or_plain(struct crypt_device *cd,
* it just configures encryption
* parameters when used for plain
* mode. */
- r = crypt_format(cd, CRYPT_PLAIN, cipher, cipher_mode,
- NULL, NULL, arg_keyfile_size, &params);
+ r = crypt_format(cd, CRYPT_PLAIN, cipher, cipher_mode, NULL, NULL, arg_keyfile_size, &params);
/* hash == NULL implies the user passed "plain" */
pass_volume_key = (params.hash == NULL);
@@ -537,9 +545,7 @@ static int attach_luks_or_plain(struct crypt_device *cd,
crypt_get_device_name(cd));
if (key_file) {
- r = crypt_activate_by_keyfile_offset(cd, name, arg_key_slot,
- key_file, arg_keyfile_size,
- arg_keyfile_offset, flags);
+ r = crypt_activate_by_keyfile_offset(cd, name, arg_key_slot, key_file, arg_keyfile_size, arg_keyfile_offset, flags);
if (r < 0) {
log_error_errno(r, "Failed to activate with key file '%s': %m", key_file);
return -EAGAIN;
@@ -631,7 +637,6 @@ int main(int argc, char *argv[]) {
k = crypt_init(&cd, arg_header);
} else
k = crypt_init(&cd, argv[3]);
-
if (k) {
log_error_errno(k, "crypt_init() failed: %m");
goto finish;
@@ -669,7 +674,7 @@ int main(int argc, char *argv[]) {
}
for (tries = 0; arg_tries == 0 || tries < arg_tries; tries++) {
- _cleanup_strv_free_ char **passwords = NULL;
+ _cleanup_strv_free_erase_ char **passwords = NULL;
if (!key_file) {
k = get_password(argv[2], argv[3], until, tries == 0 && !arg_verify, &passwords);
diff --git a/src/firstboot/firstboot.c b/src/firstboot/firstboot.c
index 1562ccf0d7..82ebb91788 100644
--- a/src/firstboot/firstboot.c
+++ b/src/firstboot/firstboot.c
@@ -51,15 +51,6 @@ static bool arg_copy_locale = false;
static bool arg_copy_timezone = false;
static bool arg_copy_root_password = false;
-static void clear_string(char *x) {
-
- if (!x)
- return;
-
- /* A delicious drop of snake-oil! */
- memset(x, 'x', strlen(x));
-}
-
static bool press_any_key(void) {
char k = 0;
bool need_nl = true;
@@ -464,7 +455,7 @@ static int prompt_root_password(void) {
msg2 = strjoina(draw_special_char(DRAW_TRIANGULAR_BULLET), " Please enter new root password again: ");
for (;;) {
- _cleanup_free_ char *a = NULL, *b = NULL;
+ _cleanup_string_free_erase_ char *a = NULL, *b = NULL;
r = ask_password_tty(msg1, NULL, 0, 0, NULL, &a);
if (r < 0)
@@ -476,19 +467,14 @@ static int prompt_root_password(void) {
}
r = ask_password_tty(msg2, NULL, 0, 0, NULL, &b);
- if (r < 0) {
- clear_string(a);
+ if (r < 0)
return log_error_errno(r, "Failed to query root password: %m");
- }
if (!streq(a, b)) {
log_error("Entered passwords did not match, please try again.");
- clear_string(a);
- clear_string(b);
continue;
}
- clear_string(b);
arg_root_password = a;
a = NULL;
break;
@@ -881,7 +867,7 @@ finish:
free(arg_locale_messages);
free(arg_timezone);
free(arg_hostname);
- clear_string(arg_root_password);
+ string_erase(arg_root_password);
free(arg_root_password);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
diff --git a/src/journal/journal-vacuum.c b/src/journal/journal-vacuum.c
index a394066cb4..c7ecd360b9 100644
--- a/src/journal/journal-vacuum.c
+++ b/src/journal/journal-vacuum.c
@@ -217,13 +217,11 @@ int journal_directory_vacuum(
de->d_name[q-8-16-1-16-1] = 0;
if (sd_id128_from_string(de->d_name + q-8-16-1-16-1-32, &seqnum_id) < 0) {
- free(p);
n_active_files++;
continue;
}
if (sscanf(de->d_name + q-8-16-1-16, "%16llx-%16llx.journal", &seqnum, &realtime) != 2) {
- free(p);
n_active_files++;
continue;
}
@@ -253,7 +251,6 @@ int journal_directory_vacuum(
}
if (sscanf(de->d_name + q-1-8-16-1-16, "%16llx-%16llx.journal~", &realtime, &tmp) != 2) {
- free(p);
n_active_files ++;
continue;
}
diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 2d2a215f5d..140d40667e 100644
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -930,7 +930,7 @@ finish:
static int system_journal_open(Server *s, bool flush_requested) {
const char *fn;
- int r;
+ int r = 0;
if (!s->system_journal &&
(s->storage == STORAGE_PERSISTENT || s->storage == STORAGE_AUTO) &&
@@ -1231,7 +1231,7 @@ static int dispatch_sigusr1(sd_event_source *es, const struct signalfd_siginfo *
server_sync(s);
server_vacuum(s, false, false);
- touch("/run/systemd/journal/flushed");
+ (void) touch("/run/systemd/journal/flushed");
return 0;
}
diff --git a/src/reply-password/reply-password.c b/src/reply-password/reply-password.c
index d0d61b98ed..534cf729b9 100644
--- a/src/reply-password/reply-password.c
+++ b/src/reply-password/reply-password.c
@@ -50,9 +50,10 @@ static int send_on_socket(int fd, const char *socket_name, const void *packet, s
}
int main(int argc, char *argv[]) {
- int fd = -1, r = EXIT_FAILURE;
+ _cleanup_close_ int fd = -1;
char packet[LINE_MAX];
size_t length;
+ int r;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
@@ -60,14 +61,14 @@ int main(int argc, char *argv[]) {
if (argc != 3) {
log_error("Wrong number of arguments.");
- goto finish;
+ return EXIT_FAILURE;
}
if (streq(argv[1], "1")) {
packet[0] = '+';
if (!fgets(packet+1, sizeof(packet)-1, stdin)) {
- log_error_errno(errno, "Failed to read password: %m");
+ r = log_error_errno(errno, "Failed to read password: %m");
goto finish;
}
@@ -78,22 +79,20 @@ int main(int argc, char *argv[]) {
length = 1;
} else {
log_error("Invalid first argument %s", argv[1]);
+ r = -EINVAL;
goto finish;
}
fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
if (fd < 0) {
- log_error_errno(errno, "socket() failed: %m");
+ r = log_error_errno(errno, "socket() failed: %m");
goto finish;
}
- if (send_on_socket(fd, argv[2], packet, length) < 0)
- goto finish;
-
- r = EXIT_SUCCESS;
+ r = send_on_socket(fd, argv[2], packet, length);
finish:
- safe_close(fd);
+ memory_erase(packet, sizeof(packet));
- return r;
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
diff --git a/src/shared/ask-password-api.c b/src/shared/ask-password-api.c
index f8cf11b297..ddf42f11e1 100644
--- a/src/shared/ask-password-api.c
+++ b/src/shared/ask-password-api.c
@@ -78,6 +78,7 @@ static int retrieve_key(key_serial_t serial, char ***ret) {
if (n < m)
break;
+ memory_erase(p, n);
free(p);
m *= 2;
}
@@ -86,12 +87,14 @@ static int retrieve_key(key_serial_t serial, char ***ret) {
if (!l)
return -ENOMEM;
+ memory_erase(p, n);
+
*ret = l;
return 0;
}
static int add_to_keyring(const char *keyname, AskPasswordFlags flags, char **passwords) {
- _cleanup_strv_free_ char **l = NULL;
+ _cleanup_strv_free_erase_ char **l = NULL;
_cleanup_free_ char *p = NULL;
key_serial_t serial;
size_t n;
@@ -124,6 +127,7 @@ static int add_to_keyring(const char *keyname, AskPasswordFlags flags, char **pa
assert(p[n-1] == 0);
serial = add_key("user", keyname, p, n-1, KEY_SPEC_USER_KEYRING);
+ memory_erase(p, n);
if (serial == -1)
return -errno;
@@ -361,9 +365,12 @@ int ask_password_tty(
dirty = true;
}
+
+ c = 'x';
}
x = strndup(passphrase, p);
+ memory_erase(passphrase, p);
if (!x) {
r = -ENOMEM;
goto finish;
@@ -620,6 +627,7 @@ int ask_password_agent(
l = strv_new("", NULL);
else
l = strv_parse_nulstr(passphrase+1, n-1);
+ memory_erase(passphrase, n);
if (!l) {
r = -ENOMEM;
goto finish;
@@ -688,9 +696,12 @@ int ask_password_auto(
if (r < 0)
return r;
- r = strv_consume(&l, s);
- if (r < 0)
+ r = strv_push(&l, s);
+ if (r < 0) {
+ string_erase(s);
+ free(s);
return -ENOMEM;
+ }
*ret = l;
return 0;
diff --git a/src/timesync/timesyncd.c b/src/timesync/timesyncd.c
index 3cb7d435cd..722b349b81 100644
--- a/src/timesync/timesyncd.c
+++ b/src/timesync/timesyncd.c
@@ -57,12 +57,12 @@ static int load_clock_timestamp(uid_t uid, gid_t gid) {
/* Try to fix the access mode, so that we can still
touch the file after dropping priviliges */
- fchmod(fd, 0644);
- fchown(fd, uid, gid);
+ (void) fchmod(fd, 0644);
+ (void) fchown(fd, uid, gid);
} else
/* create stamp file with the compiled-in date */
- touch_file("/var/lib/systemd/clock", true, min, uid, gid, 0644);
+ (void) touch_file("/var/lib/systemd/clock", true, min, uid, gid, 0644);
ct = now(CLOCK_REALTIME);
if (ct < min) {
@@ -150,7 +150,7 @@ int main(int argc, char *argv[]) {
/* if we got an authoritative time, store it in the file system */
if (m->sync)
- touch("/var/lib/systemd/clock");
+ (void) touch("/var/lib/systemd/clock");
sd_event_get_exit_code(m->event, &r);
diff --git a/src/tty-ask-password-agent/tty-ask-password-agent.c b/src/tty-ask-password-agent/tty-ask-password-agent.c
index 53986babae..8423364046 100644
--- a/src/tty-ask-password-agent/tty-ask-password-agent.c
+++ b/src/tty-ask-password-agent/tty-ask-password-agent.c
@@ -120,23 +120,30 @@ static int ask_password_plymouth(
y = now(CLOCK_MONOTONIC);
- if (y > until)
- return -ETIME;
+ if (y > until) {
+ r = -ETIME;
+ goto finish;
+ }
sleep_for = (int) ((until - y) / USEC_PER_MSEC);
}
- if (flag_file && access(flag_file, F_OK) < 0)
- return -errno;
+ if (flag_file && access(flag_file, F_OK) < 0) {
+ r = -errno;
+ goto finish;
+ }
j = poll(pollfd, notify >= 0 ? 2 : 1, sleep_for);
if (j < 0) {
if (errno == EINTR)
continue;
- return -errno;
- } else if (j == 0)
- return -ETIME;
+ r = -errno;
+ goto finish;
+ } else if (j == 0) {
+ r = -ETIME;
+ goto finish;
+ }
if (notify >= 0 && pollfd[POLL_INOTIFY].revents != 0)
flush_fd(notify);
@@ -149,9 +156,12 @@ static int ask_password_plymouth(
if (errno == EINTR || errno == EAGAIN)
continue;
- return -errno;
- } else if (k == 0)
- return -EIO;
+ r = -errno;
+ goto finish;
+ } else if (k == 0) {
+ r = -EIO;
+ goto finish;
+ }
p += k;
@@ -166,12 +176,14 @@ static int ask_password_plymouth(
* with a normal password request */
packet = mfree(packet);
- if (asprintf(&packet, "*\002%c%s%n", (int) (strlen(message) + 1), message, &n) < 0)
- return -ENOMEM;
+ if (asprintf(&packet, "*\002%c%s%n", (int) (strlen(message) + 1), message, &n) < 0) {
+ r = -ENOMEM;
+ goto finish;
+ }
r = loop_write(fd, packet, n+1, true);
if (r < 0)
- return r;
+ goto finish;
flags &= ~ASK_PASSWORD_ACCEPT_CACHED;
p = 0;
@@ -179,7 +191,8 @@ static int ask_password_plymouth(
}
/* No password, because UI not shown */
- return -ENOENT;
+ r = -ENOENT;
+ goto finish;
} else if (buffer[0] == 2 || buffer[0] == 9) {
uint32_t size;
@@ -191,32 +204,43 @@ static int ask_password_plymouth(
memcpy(&size, buffer+1, sizeof(size));
size = le32toh(size);
- if (size + 5 > sizeof(buffer))
- return -EIO;
+ if (size + 5 > sizeof(buffer)) {
+ r = -EIO;
+ goto finish;
+ }
if (p-5 < size)
continue;
l = strv_parse_nulstr(buffer + 5, size);
- if (!l)
- return -ENOMEM;
+ if (!l) {
+ r = -ENOMEM;
+ goto finish;
+ }
*ret = l;
break;
- } else
+ } else {
/* Unknown packet */
- return -EIO;
+ r = -EIO;
+ goto finish;
+ }
}
- return 0;
+ r = 0;
+
+finish:
+ memory_erase(buffer, sizeof(buffer));
+ return r;
}
static int parse_password(const char *filename, char **wall) {
_cleanup_free_ char *socket_name = NULL, *message = NULL, *packet = NULL;
+ bool accept_cached = false, echo = false;
+ size_t packet_length = 0;
uint64_t not_after = 0;
unsigned pid = 0;
- bool accept_cached = false, echo = false;
const ConfigTableItem items[] = {
{ "Ask", "Socket", config_parse_string, 0, &socket_name },
@@ -270,7 +294,6 @@ static int parse_password(const char *filename, char **wall) {
} else {
union sockaddr_union sa = {};
- size_t packet_length = 0;
_cleanup_close_ int socket_fd = -1;
assert(arg_action == ACTION_QUERY ||
@@ -284,7 +307,7 @@ static int parse_password(const char *filename, char **wall) {
}
if (arg_plymouth) {
- _cleanup_strv_free_ char **passwords = NULL;
+ _cleanup_strv_free_erase_ char **passwords = NULL;
r = ask_password_plymouth(message, not_after, accept_cached ? ASK_PASSWORD_ACCEPT_CACHED : 0, filename, &passwords);
if (r >= 0) {
@@ -308,7 +331,7 @@ static int parse_password(const char *filename, char **wall) {
}
} else {
- _cleanup_free_ char *password = NULL;
+ _cleanup_string_free_erase_ char *password = NULL;
int tty_fd = -1;
if (arg_console) {
@@ -340,26 +363,36 @@ static int parse_password(const char *filename, char **wall) {
}
}
- if (IN_SET(r, -ETIME, -ENOENT))
+ if (IN_SET(r, -ETIME, -ENOENT)) {
/* If the query went away, that's OK */
- return 0;
-
- if (r < 0)
- return log_error_errno(r, "Failed to query password: %m");
+ r = 0;
+ goto finish;
+ }
+ if (r < 0) {
+ log_error_errno(r, "Failed to query password: %m");
+ goto finish;
+ }
socket_fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
- if (socket_fd < 0)
- return log_error_errno(errno, "socket(): %m");
+ if (socket_fd < 0) {
+ r = log_error_errno(errno, "socket(): %m");
+ goto finish;
+ }
sa.un.sun_family = AF_UNIX;
strncpy(sa.un.sun_path, socket_name, sizeof(sa.un.sun_path));
r = sendto(socket_fd, packet, packet_length, MSG_NOSIGNAL, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(socket_name));
+ memory_erase(packet, packet_length);
if (r < 0)
return log_error_errno(errno, "Failed to send: %m");
}
return 0;
+
+finish:
+ memory_erase(packet, packet_length);
+ return r;
}
static int wall_tty_block(void) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-19 14:15:41 +0000