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-rw-r--r--src/shared/dns-domain.c95
-rw-r--r--src/shared/dns-domain.h2
-rw-r--r--src/shared/install.c5
3 files changed, 96 insertions, 6 deletions
diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c
index 20a44ce4e1..8a0dec1540 100644
--- a/src/shared/dns-domain.c
+++ b/src/shared/dns-domain.c
@@ -114,6 +114,68 @@ int dns_label_unescape(const char **name, char *dest, size_t sz) {
return r;
}
+/* @label_terminal: terminal character of a label, updated to point to the terminal character of
+ * the previous label (always skipping one dot) or to NULL if there are no more
+ * labels. */
+int dns_label_unescape_suffix(const char *name, const char **label_terminal, char *dest, size_t sz) {
+ const char *terminal;
+ int r;
+
+ assert(name);
+ assert(label_terminal);
+ assert(dest);
+
+ /* no more labels */
+ if (!*label_terminal) {
+ if (sz >= 1)
+ *dest = 0;
+
+ return 0;
+ }
+
+ assert(**label_terminal == '.' || **label_terminal == 0);
+
+ /* skip current terminal character */
+ terminal = *label_terminal - 1;
+
+ /* point name to the last label, and terminal to the preceding terminal symbol (or make it a NULL pointer) */
+ for (;;) {
+ if (terminal < name) {
+ /* reached the first label, so indicate that there are no more */
+ terminal = NULL;
+ break;
+ }
+
+ /* find the start of the last label */
+ if (*terminal == '.') {
+ const char *y;
+ unsigned slashes = 0;
+
+ for (y = terminal - 1; y >= name && *y == '\\'; y--)
+ slashes ++;
+
+ if (slashes % 2 == 0) {
+ /* the '.' was not escaped */
+ name = terminal + 1;
+ break;
+ } else {
+ terminal = y;
+ continue;
+ }
+ }
+
+ terminal --;
+ }
+
+ r = dns_label_unescape(&name, dest, sz);
+ if (r < 0)
+ return r;
+
+ *label_terminal = terminal;
+
+ return r;
+}
+
int dns_label_escape(const char *p, size_t l, char **ret) {
_cleanup_free_ char *s = NULL;
char *q;
@@ -338,20 +400,23 @@ unsigned long dns_name_hash_func(const void *s, const uint8_t hash_key[HASH_KEY_
}
int dns_name_compare_func(const void *a, const void *b) {
- const char *x = a, *y = b;
+ const char *x, *y;
int r, q, k, w;
assert(a);
assert(b);
+ x = (const char *) a + strlen(a);
+ y = (const char *) b + strlen(b);
+
for (;;) {
char la[DNS_LABEL_MAX+1], lb[DNS_LABEL_MAX+1];
- if (*x == 0 && *y == 0)
+ if (x == NULL && y == NULL)
return 0;
- r = dns_label_unescape(&x, la, sizeof(la));
- q = dns_label_unescape(&y, lb, sizeof(lb));
+ r = dns_label_unescape_suffix(a, &x, la, sizeof(la));
+ q = dns_label_unescape_suffix(b, &y, lb, sizeof(lb));
if (r < 0 || q < 0)
return r - q;
@@ -464,6 +529,28 @@ int dns_name_endswith(const char *name, const char *suffix) {
}
}
+int dns_name_between(const char *a, const char *b, const char *c) {
+ int n;
+
+ /* Determine if b is strictly greater than a and strictly smaller than c.
+ We consider the order of names to be circular, so that if a is
+ strictly greater than c, we consider b to be between them if it is
+ either greater than a or smaller than c. This is how the canonical
+ DNS name order used in NSEC records work. */
+
+ n = dns_name_compare_func(a, c);
+ if (n == 0)
+ return -EINVAL;
+ else if (n < 0)
+ /* a<---b--->c */
+ return dns_name_compare_func(a, b) < 0 &&
+ dns_name_compare_func(b, c) < 0;
+ else
+ /* <--b--c a--b--> */
+ return dns_name_compare_func(b, c) < 0 ||
+ dns_name_compare_func(a, b) < 0;
+}
+
int dns_name_reverse(int family, const union in_addr_union *a, char **ret) {
const uint8_t *p;
int r;
diff --git a/src/shared/dns-domain.h b/src/shared/dns-domain.h
index 00caf5d700..bd50ad3e6d 100644
--- a/src/shared/dns-domain.h
+++ b/src/shared/dns-domain.h
@@ -29,6 +29,7 @@
#define DNS_NAME_MAX 255
int dns_label_unescape(const char **name, char *dest, size_t sz);
+int dns_label_unescape_suffix(const char *name, const char **label_end, char *dest, size_t sz);
int dns_label_escape(const char *p, size_t l, char **ret);
int dns_label_apply_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max);
@@ -49,6 +50,7 @@ unsigned long dns_name_hash_func(const void *s, const uint8_t hash_key[HASH_KEY_
int dns_name_compare_func(const void *a, const void *b);
extern const struct hash_ops dns_name_hash_ops;
+int dns_name_between(const char *a, const char *b, const char *c);
int dns_name_equal(const char *x, const char *y);
int dns_name_endswith(const char *name, const char *suffix);
diff --git a/src/shared/install.c b/src/shared/install.c
index c37cf1948a..3d2b5ae77f 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -2190,6 +2190,7 @@ int unit_file_get_list(
_cleanup_(unit_file_list_free_onep) UnitFileList *f = NULL;
struct dirent *de;
_cleanup_free_ char *path = NULL;
+ bool also = false;
errno = 0;
de = readdir(d);
@@ -2243,7 +2244,7 @@ int unit_file_get_list(
if (!path)
return -ENOMEM;
- r = unit_file_can_install(&paths, root_dir, path, true, NULL);
+ r = unit_file_can_install(&paths, root_dir, path, true, &also);
if (r == -EINVAL || /* Invalid setting? */
r == -EBADMSG || /* Invalid format? */
r == -ENOENT /* Included file not found? */)
@@ -2253,7 +2254,7 @@ int unit_file_get_list(
else if (r > 0)
f->state = UNIT_FILE_DISABLED;
else
- f->state = UNIT_FILE_STATIC;
+ f->state = also ? UNIT_FILE_INDIRECT : UNIT_FILE_STATIC;
found:
r = hashmap_put(h, basename(f->path), f);