#include <fcntl.h>
#include <unistd.h>
-#include "sd-id128.h"
-
#include "util.h"
#include "macro.h"
+#include "sd-id128.h"
_public_ char *sd_id128_to_string(sd_id128_t id, char s[33]) {
unsigned n;
- if (!s)
- return NULL;
+ assert_return(s, NULL);
for (n = 0; n < 16; n++) {
s[n*2] = hexchar(id.bytes[n] >> 4);
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;
+ assert_return(s, -EINVAL);
+ assert_return(ret, -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;
}
_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];
+ static thread_local sd_id128_t saved_machine_id;
+ static thread_local bool saved_machine_id_valid = false;
+ _cleanup_close_ int fd = -1;
+ char buf[33];
ssize_t k;
unsigned j;
sd_id128_t t;
- if (!ret)
- return -EINVAL;
+ assert_return(ret, -EINVAL);
if (saved_machine_id_valid) {
*ret = saved_machine_id;
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++) {
}
_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;
+ static thread_local sd_id128_t saved_boot_id;
+ static thread_local bool saved_boot_id_valid = false;
+ _cleanup_close_ int fd = -1;
char buf[36];
ssize_t k;
unsigned j;
sd_id128_t t;
char *p;
- if (!ret)
- return -EINVAL;
+ assert_return(ret, -EINVAL);
if (saved_boot_id_valid) {
*ret = saved_boot_id;
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++) {
int a, b;
+ if (p >= buf + k)
+ return -EIO;
+
if (*p == '-')
p++;
}
_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;
+ assert_return(ret, -EINVAL);
fd = open("/dev/urandom", O_RDONLY|O_CLOEXEC|O_NOCTTY);
if (fd < 0)
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