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-rw-r--r--src/core/load-dropin.c40
-rw-r--r--src/core/machine-id-setup.c30
-rw-r--r--src/libsystemd-id128/sd-id128.c61
-rw-r--r--src/nspawn/nspawn.c5
-rw-r--r--src/shared/util.c41
-rw-r--r--src/shared/util.h2
-rw-r--r--src/systemd/sd-id128.h2
-rw-r--r--src/test/test-id128.c27
8 files changed, 156 insertions, 52 deletions
diff --git a/src/core/load-dropin.c b/src/core/load-dropin.c
index 0318296f1f..a877e66098 100644
--- a/src/core/load-dropin.c
+++ b/src/core/load-dropin.c
@@ -31,7 +31,12 @@
#include "load-fragment.h"
#include "conf-files.h"
-static int iterate_dir(Unit *u, const char *path, UnitDependency dependency, char ***strv) {
+static int iterate_dir(
+ Unit *u,
+ const char *path,
+ UnitDependency dependency,
+ char ***strv) {
+
_cleanup_closedir_ DIR *d = NULL;
int r;
@@ -86,7 +91,14 @@ static int iterate_dir(Unit *u, const char *path, UnitDependency dependency, cha
return 0;
}
-static int process_dir(Unit *u, const char *unit_path, const char *name, const char *suffix, UnitDependency dependency, char ***strv) {
+static int process_dir(
+ Unit *u,
+ const char *unit_path,
+ const char *name,
+ const char *suffix,
+ UnitDependency dependency,
+ char ***strv) {
+
int r;
char *path;
@@ -97,7 +109,7 @@ static int process_dir(Unit *u, const char *unit_path, const char *name, const c
path = strjoin(unit_path, "/", name, suffix, NULL);
if (!path)
- return -ENOMEM;
+ return log_oom();
if (u->manager->unit_path_cache &&
!set_get(u->manager->unit_path_cache, path))
@@ -115,13 +127,13 @@ static int process_dir(Unit *u, const char *unit_path, const char *name, const c
template = unit_name_template(name);
if (!template)
- return -ENOMEM;
+ return log_oom();
path = strjoin(unit_path, "/", template, suffix, NULL);
free(template);
if (!path)
- return -ENOMEM;
+ return log_oom();
if (u->manager->unit_path_cache &&
!set_get(u->manager->unit_path_cache, path))
@@ -138,10 +150,10 @@ static int process_dir(Unit *u, const char *unit_path, const char *name, const c
}
char **unit_find_dropin_paths(Unit *u) {
- Iterator i;
- char *t;
_cleanup_strv_free_ char **strv = NULL;
char **configs = NULL;
+ Iterator i;
+ char *t;
int r;
assert(u);
@@ -157,14 +169,14 @@ char **unit_find_dropin_paths(Unit *u) {
}
}
- if (!strv_isempty(strv)) {
- r = conf_files_list_strv(&configs, ".conf", NULL, (const char**) strv);
- if (r < 0) {
- log_error("Failed to get list of configuration files: %s", strerror(-r));
- strv_free(configs);
- return NULL;
- }
+ if (strv_isempty(strv))
+ return NULL;
+ r = conf_files_list_strv(&configs, ".conf", NULL, (const char**) strv);
+ if (r < 0) {
+ log_error("Failed to get list of configuration files: %s", strerror(-r));
+ strv_free(configs);
+ return NULL;
}
return configs;
diff --git a/src/core/machine-id-setup.c b/src/core/machine-id-setup.c
index 608b0a5e7e..18e015fe7f 100644
--- a/src/core/machine-id-setup.c
+++ b/src/core/machine-id-setup.c
@@ -72,16 +72,19 @@ static int generate(char id[34]) {
/* First, try reading the D-Bus machine id, unless it is a symlink */
fd = open("/var/lib/dbus/machine-id", O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
if (fd >= 0) {
-
- k = loop_read(fd, id, 32, false);
+ k = loop_read(fd, id, 33, false);
close_nointr_nofail(fd);
- if (k >= 32) {
- id[32] = '\n';
- id[33] = 0;
+ if (k == 33 && id[32] == '\n') {
- log_info("Initializing machine ID from D-Bus machine ID.");
- return 0;
+ id[32] = 0;
+ if (id128_is_valid(id)) {
+ id[32] = '\n';
+ id[33] = 0;
+
+ log_info("Initializing machine ID from D-Bus machine ID.");
+ return 0;
+ }
}
}
@@ -113,7 +116,7 @@ static int generate(char id[34]) {
* $container_uuid the way libvirt/LXC does it */
r = detect_container(NULL);
if (r > 0) {
- char *e;
+ _cleanup_free_ char *e = NULL;
r = getenv_for_pid(1, "container_uuid", &e);
if (r > 0) {
@@ -121,12 +124,9 @@ static int generate(char id[34]) {
r = shorten_uuid(id, e);
if (r >= 0) {
log_info("Initializing machine ID from container UUID.");
- free(e);
return 0;
}
}
-
- free(e);
}
}
@@ -183,8 +183,12 @@ int machine_id_setup(void) {
}
if (S_ISREG(st.st_mode))
- if (loop_read(fd, id, 32, false) >= 32)
- return 0;
+ if (loop_read(fd, id, 33, false) == 33 && id[32] == '\n') {
+ id[32] = 0;
+
+ if (id128_is_valid(id))
+ return 0;
+ }
/* Hmm, so, the id currently stored is not useful, then let's
* generate one */
diff --git a/src/libsystemd-id128/sd-id128.c b/src/libsystemd-id128/sd-id128.c
index 68c4987149..64ddd09236 100644
--- a/src/libsystemd-id128/sd-id128.c
+++ b/src/libsystemd-id128/sd-id128.c
@@ -44,30 +44,50 @@ _public_ char *sd_id128_to_string(sd_id128_t id, char s[33]) {
return s;
}
-_public_ int sd_id128_from_string(const char s[33], sd_id128_t *ret) {
- unsigned n;
+_public_ int sd_id128_from_string(const char s[], sd_id128_t *ret) {
+ unsigned n, i;
sd_id128_t t;
+ bool is_guid = false;
if (!s)
return -EINVAL;
if (!ret)
return -EINVAL;
- for (n = 0; n < 16; n++) {
+ for (n = 0, i = 0; n < 16;) {
int a, b;
- a = unhexchar(s[n*2]);
+ if (s[i] == '-') {
+ /* Is this a GUID? Then be nice, and skip over
+ * the dashes */
+
+ if (i == 8)
+ is_guid = true;
+ else if (i == 13 || i == 18 || i == 23) {
+ if (!is_guid)
+ return -EINVAL;
+ } else
+ return -EINVAL;
+
+ i++;
+ continue;
+ }
+
+ a = unhexchar(s[i++]);
if (a < 0)
return -EINVAL;
- b = unhexchar(s[n*2+1]);
+ b = unhexchar(s[i++]);
if (b < 0)
return -EINVAL;
- t.bytes[n] = (a << 4) | b;
+ t.bytes[n++] = (a << 4) | b;
}
- if (s[32] != 0)
+ if (i != (is_guid ? 36 : 32))
+ return -EINVAL;
+
+ if (s[i] != 0)
return -EINVAL;
*ret = t;
@@ -90,8 +110,8 @@ static sd_id128_t make_v4_uuid(sd_id128_t id) {
_public_ int sd_id128_get_machine(sd_id128_t *ret) {
static __thread sd_id128_t saved_machine_id;
static __thread bool saved_machine_id_valid = false;
- int fd;
- char buf[32];
+ _cleanup_close_ int fd = -1;
+ char buf[33];
ssize_t k;
unsigned j;
sd_id128_t t;
@@ -108,13 +128,14 @@ _public_ int sd_id128_get_machine(sd_id128_t *ret) {
if (fd < 0)
return -errno;
- k = loop_read(fd, buf, 32, false);
- close_nointr_nofail(fd);
-
+ k = loop_read(fd, buf, 33, false);
if (k < 0)
return (int) k;
- if (k < 32)
+ if (k != 33)
+ return -EIO;
+
+ if (buf[32] !='\n')
return -EIO;
for (j = 0; j < 16; j++) {
@@ -139,7 +160,7 @@ _public_ int sd_id128_get_machine(sd_id128_t *ret) {
_public_ int sd_id128_get_boot(sd_id128_t *ret) {
static __thread sd_id128_t saved_boot_id;
static __thread bool saved_boot_id_valid = false;
- int fd;
+ _cleanup_close_ int fd = -1;
char buf[36];
ssize_t k;
unsigned j;
@@ -159,12 +180,10 @@ _public_ int sd_id128_get_boot(sd_id128_t *ret) {
return -errno;
k = loop_read(fd, buf, 36, false);
- close_nointr_nofail(fd);
-
if (k < 0)
return (int) k;
- if (k < 36)
+ if (k != 36)
return -EIO;
for (j = 0, p = buf; j < 16; j++) {
@@ -195,9 +214,9 @@ _public_ int sd_id128_get_boot(sd_id128_t *ret) {
}
_public_ int sd_id128_randomize(sd_id128_t *ret) {
- int fd;
- ssize_t k;
+ _cleanup_close_ int fd = -1;
sd_id128_t t;
+ ssize_t k;
if (!ret)
return -EINVAL;
@@ -207,12 +226,10 @@ _public_ int sd_id128_randomize(sd_id128_t *ret) {
return -errno;
k = loop_read(fd, &t, 16, false);
- close_nointr_nofail(fd);
-
if (k < 0)
return (int) k;
- if (k < 16)
+ if (k != 16)
return -EIO;
/* Turn this into a valid v4 UUID, to be nice. Note that we
diff --git a/src/nspawn/nspawn.c b/src/nspawn/nspawn.c
index a49cbc2238..0a46313636 100644
--- a/src/nspawn/nspawn.c
+++ b/src/nspawn/nspawn.c
@@ -222,6 +222,11 @@ static int parse_argv(int argc, char *argv[]) {
break;
case ARG_UUID:
+ if (!id128_is_valid(optarg)) {
+ log_error("Invalid UUID: %s", optarg);
+ return -EINVAL;
+ }
+
arg_uuid = optarg;
break;
diff --git a/src/shared/util.c b/src/shared/util.c
index 38ee493a81..f9ec14aff4 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -5854,3 +5854,44 @@ void* greedy_realloc(void **p, size_t *allocated, size_t need) {
*allocated = a;
return q;
}
+
+bool id128_is_valid(const char *s) {
+ size_t i, l;
+
+ l = strlen(s);
+ if (l == 32) {
+
+ /* Simple formatted 128bit hex string */
+
+ for (i = 0; i < l; i++) {
+ char c = s[i];
+
+ if (!(c >= '0' && c <= '9') &&
+ !(c >= 'a' && c <= 'z') &&
+ !(c >= 'A' && c <= 'Z'))
+ return false;
+ }
+
+ } else if (l == 36) {
+
+ /* Formatted UUID */
+
+ for (i = 0; i < l; i++) {
+ char c = s[i];
+
+ if ((i == 8 || i == 13 || i == 18 || i == 23)) {
+ if (c != '-')
+ return false;
+ } else {
+ if (!(c >= '0' && c <= '9') &&
+ !(c >= 'a' && c <= 'z') &&
+ !(c >= 'A' && c <= 'Z'))
+ return false;
+ }
+ }
+
+ } else
+ return false;
+
+ return true;
+}
diff --git a/src/shared/util.h b/src/shared/util.h
index e3fc876857..5d1b0b1c31 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -733,3 +733,5 @@ static inline void _reset_locale_(struct _locale_struct_ *s) {
} \
!_saved_locale_.quit; }) ; \
_saved_locale_.quit = true)
+
+bool id128_is_valid(const char *s);
diff --git a/src/systemd/sd-id128.h b/src/systemd/sd-id128.h
index 79bb8b3c99..3a83932093 100644
--- a/src/systemd/sd-id128.h
+++ b/src/systemd/sd-id128.h
@@ -40,7 +40,7 @@ union sd_id128 {
char *sd_id128_to_string(sd_id128_t id, char s[33]);
-int sd_id128_from_string(const char s[33], sd_id128_t *ret);
+int sd_id128_from_string(const char *s, sd_id128_t *ret);
int sd_id128_randomize(sd_id128_t *ret);
diff --git a/src/test/test-id128.c b/src/test/test-id128.c
index bfd743eca3..2ed8e292e6 100644
--- a/src/test/test-id128.c
+++ b/src/test/test-id128.c
@@ -27,10 +27,13 @@
#include "macro.h"
#define ID128_WALDI SD_ID128_MAKE(01, 02, 03, 04, 05, 06, 07, 08, 09, 0a, 0b, 0c, 0d, 0e, 0f, 10)
+#define STR_WALDI "0102030405060708090a0b0c0d0e0f10"
+#define UUID_WALDI "01020304-0506-0708-090a-0b0c0d0e0f10"
int main(int argc, char *argv[]) {
sd_id128_t id, id2;
char t[33];
+ _cleanup_free_ char *b = NULL;
assert_se(sd_id128_randomize(&id) == 0);
printf("random: %s\n", sd_id128_to_string(id, t));
@@ -45,8 +48,28 @@ int main(int argc, char *argv[]) {
printf("boot: %s\n", sd_id128_to_string(id, t));
printf("waldi: %s\n", sd_id128_to_string(ID128_WALDI, t));
-
- printf("waldi2: " SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(ID128_WALDI));
+ assert_se(streq(t, STR_WALDI));
+
+ assert_se(asprintf(&b, SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(ID128_WALDI)) == 32);
+ printf("waldi2: %s\n", b);
+ assert_se(streq(t, b));
+
+ assert_se(sd_id128_from_string(UUID_WALDI, &id) >= 0);
+ assert_se(sd_id128_equal(id, ID128_WALDI));
+
+ assert_se(sd_id128_from_string("", &id) < 0);
+ assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f101", &id) < 0);
+ assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f10-", &id) < 0);
+ assert_se(sd_id128_from_string("01020304-0506-0708-090a0b0c0d0e0f10", &id) < 0);
+ assert_se(sd_id128_from_string("010203040506-0708-090a-0b0c0d0e0f10", &id) < 0);
+
+ assert_se(id128_is_valid(STR_WALDI));
+ assert_se(id128_is_valid(UUID_WALDI));
+ assert_se(!id128_is_valid(""));
+ assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f101"));
+ assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f10-"));
+ assert_se(!id128_is_valid("01020304-0506-0708-090a0b0c0d0e0f10"));
+ assert_se(!id128_is_valid("010203040506-0708-090a-0b0c0d0e0f10"));
return 0;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-02 08:09:13 +0000