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authorLennart Poettering <lennart@poettering.net>2016-01-26 20:25:10 +0100
committerLennart Poettering <lennart@poettering.net>2016-01-27 02:21:28 +0100
commit2aaafcf57048983b2b76d6325f333e50aca4a3a3 (patch)
treeadd7bf54847be43c14becda04104e1c08b32476c /src/basic/unit-name.c
parent1f00ededc7451933e23a95597804897b37fa88d6 (diff)
basic: don't append suffixes to unit name glob expressions
When the user specifies "foo*" as unit name glob expression, we shouldn't turn this into "foo*.service". Hence: only append a suffix if the specified string isn't a glob expression. Fixes: #2397
Diffstat (limited to 'src/basic/unit-name.c')
-rw-r--r--src/basic/unit-name.c45
1 files changed, 34 insertions, 11 deletions
diff --git a/src/basic/unit-name.c b/src/basic/unit-name.c
index 5fc3b9d6fd..d4a3062658 100644
--- a/src/basic/unit-name.c
+++ b/src/basic/unit-name.c
@@ -27,6 +27,7 @@
#include "alloc-util.h"
#include "bus-label.h"
+#include "glob-util.h"
#include "hexdecoct.h"
#include "macro.h"
#include "path-util.h"
@@ -35,10 +36,22 @@
#include "strv.h"
#include "unit-name.h"
+/* Characters valid in a unit name. */
#define VALID_CHARS \
- DIGITS LETTERS \
+ DIGITS \
+ LETTERS \
":-_.\\"
+/* The same, but also permits the single @ character that may appear */
+#define VALID_CHARS_WITH_AT \
+ "@" \
+ VALID_CHARS
+
+/* All chars valid in a unit name glob */
+#define VALID_CHARS_GLOB \
+ VALID_CHARS_WITH_AT \
+ "[]!-*?"
+
bool unit_name_is_valid(const char *n, UnitNameFlags flags) {
const char *e, *i, *at;
@@ -637,7 +650,7 @@ static char *do_escape_mangle(const char *f, UnitNameMangle allow_globs, char *t
/* We'll only escape the obvious characters here, to play
* safe. */
- valid_chars = allow_globs == UNIT_NAME_GLOB ? "@" VALID_CHARS "[]!-*?" : "@" VALID_CHARS;
+ valid_chars = allow_globs == UNIT_NAME_GLOB ? VALID_CHARS_GLOB : VALID_CHARS_WITH_AT;
for (; *f; f++) {
if (*f == '/')
@@ -672,15 +685,15 @@ int unit_name_mangle_with_suffix(const char *name, UnitNameMangle allow_globs, c
if (!unit_suffix_is_valid(suffix))
return -EINVAL;
- if (unit_name_is_valid(name, UNIT_NAME_ANY)) {
- /* No mangling necessary... */
- s = strdup(name);
- if (!s)
- return -ENOMEM;
+ /* Already a fully valid unit name? If so, no mangling is necessary... */
+ if (unit_name_is_valid(name, UNIT_NAME_ANY))
+ goto good;
- *ret = s;
- return 0;
- }
+ /* Already a fully valid globbing expression? If so, no mangling is necessary either... */
+ if (allow_globs == UNIT_NAME_GLOB &&
+ string_is_glob(name) &&
+ in_charset(name, VALID_CHARS_GLOB))
+ goto good;
if (is_device_path(name)) {
r = unit_name_from_path(name, ".device", ret);
@@ -705,11 +718,21 @@ int unit_name_mangle_with_suffix(const char *name, UnitNameMangle allow_globs, c
t = do_escape_mangle(name, allow_globs, s);
*t = 0;
- if (unit_name_to_type(s) < 0)
+ /* Append a suffix if it doesn't have any, but only if this is not a glob, so that we can allow "foo.*" as a
+ * valid glob. */
+ if ((allow_globs != UNIT_NAME_GLOB || !string_is_glob(s)) && unit_name_to_type(s) < 0)
strcpy(t, suffix);
*ret = s;
return 1;
+
+good:
+ s = strdup(name);
+ if (!s)
+ return -ENOMEM;
+
+ *ret = s;
+ return 0;
}
int slice_build_parent_slice(const char *slice, char **ret) {