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-rw-r--r--src/basic/util.c27
-rw-r--r--src/basic/util.h5
-rw-r--r--src/test/test-util.c94
3 files changed, 120 insertions, 6 deletions
diff --git a/src/basic/util.c b/src/basic/util.c
index e0d1220153..46a48c4d60 100644
--- a/src/basic/util.c
+++ b/src/basic/util.c
@@ -5246,21 +5246,39 @@ int unquote_first_word(const char **p, char **ret, UnquoteFlags flags) {
case SINGLE_QUOTE_ESCAPE:
case DOUBLE_QUOTE_ESCAPE:
case VALUE_ESCAPE:
+ if (!GREEDY_REALLOC(s, allocated, sz+7))
+ return -ENOMEM;
+
if (c == 0) {
+ if ((flags & UNQUOTE_CUNESCAPE_RELAX) &&
+ (state == VALUE_ESCAPE || flags & UNQUOTE_RELAX)) {
+ /* If we find an unquoted trailing backslash and we're in
+ * UNQUOTE_CUNESCAPE_RELAX mode, keep it verbatim in the
+ * output.
+ *
+ * Unbalanced quotes will only be allowed in UNQUOTE_RELAX
+ * mode, UNQUOTE_CUNESCAP_RELAX mode does not allow them.
+ */
+ s[sz++] = '\\';
+ goto finish;
+ }
if (flags & UNQUOTE_RELAX)
goto finish;
return -EINVAL;
}
- if (!GREEDY_REALLOC(s, allocated, sz+7))
- return -ENOMEM;
-
if (flags & UNQUOTE_CUNESCAPE) {
uint32_t u;
r = cunescape_one(*p, (size_t) -1, &c, &u);
- if (r < 0)
+ if (r < 0) {
+ if (flags & UNQUOTE_CUNESCAPE_RELAX) {
+ s[sz++] = '\\';
+ s[sz++] = c;
+ goto end_escape;
+ }
return -EINVAL;
+ }
(*p) += r - 1;
@@ -5271,6 +5289,7 @@ int unquote_first_word(const char **p, char **ret, UnquoteFlags flags) {
} else
s[sz++] = c;
+end_escape:
state = (state == SINGLE_QUOTE_ESCAPE) ? SINGLE_QUOTE :
(state == DOUBLE_QUOTE_ESCAPE) ? DOUBLE_QUOTE :
VALUE;
diff --git a/src/basic/util.h b/src/basic/util.h
index 7aca46d777..748f22f1a2 100644
--- a/src/basic/util.h
+++ b/src/basic/util.h
@@ -839,8 +839,9 @@ int is_dir(const char *path, bool follow);
int is_device_node(const char *path);
typedef enum UnquoteFlags {
- UNQUOTE_RELAX = 1,
- UNQUOTE_CUNESCAPE = 2,
+ UNQUOTE_RELAX = 1,
+ UNQUOTE_CUNESCAPE = 2,
+ UNQUOTE_CUNESCAPE_RELAX = 4,
} UnquoteFlags;
int unquote_first_word(const char **p, char **ret, UnquoteFlags flags);
diff --git a/src/test/test-util.c b/src/test/test-util.c
index ed8db45115..b3e79cd6f5 100644
--- a/src/test/test-util.c
+++ b/src/test/test-util.c
@@ -1304,6 +1304,100 @@ static void test_unquote_first_word(void) {
assert_se(streq(t, "pi\360\237\222\251le"));
free(t);
assert_se(p == original + 32);
+
+ p = original = "fooo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_RELAX) > 0);
+ assert_se(streq(t, "fooo"));
+ free(t);
+ assert_se(p == original + 5);
+
+ p = original = "fooo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE_RELAX) > 0);
+ assert_se(streq(t, "fooo\\"));
+ free(t);
+ assert_se(p == original + 5);
+
+ p = original = "fooo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE_RELAX|UNQUOTE_RELAX) > 0);
+ assert_se(streq(t, "fooo\\"));
+ free(t);
+ assert_se(p == original + 5);
+
+ p = original = "fooo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE|UNQUOTE_CUNESCAPE_RELAX) > 0);
+ assert_se(streq(t, "fooo\\"));
+ free(t);
+ assert_se(p == original + 5);
+
+ p = original = "\"foo\\";
+ assert_se(unquote_first_word(&p, &t, 0) == -EINVAL);
+ assert_se(p == original + 5);
+
+ p = original = "\"foo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_RELAX) > 0);
+ assert_se(streq(t, "foo"));
+ free(t);
+ assert_se(p == original + 5);
+
+ p = original = "\"foo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE_RELAX) == -EINVAL);
+ assert_se(p == original + 5);
+
+ p = original = "\"foo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE_RELAX|UNQUOTE_RELAX) > 0);
+ assert_se(streq(t, "foo\\"));
+ free(t);
+ assert_se(p == original + 5);
+
+ p = original = "\"foo\\";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE|UNQUOTE_CUNESCAPE_RELAX|UNQUOTE_RELAX) > 0);
+ assert_se(streq(t, "foo\\"));
+ free(t);
+ assert_se(p == original + 5);
+
+ p = original = "fooo\\ bar quux";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_RELAX) > 0);
+ assert_se(streq(t, "fooo bar"));
+ free(t);
+ assert_se(p == original + 10);
+
+ p = original = "fooo\\ bar quux";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE_RELAX) > 0);
+ assert_se(streq(t, "fooo bar"));
+ free(t);
+ assert_se(p == original + 10);
+
+ p = original = "fooo\\ bar quux";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE_RELAX|UNQUOTE_RELAX) > 0);
+ assert_se(streq(t, "fooo bar"));
+ free(t);
+ assert_se(p == original + 10);
+
+ p = original = "fooo\\ bar quux";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE) == -EINVAL);
+ assert_se(p == original + 5);
+
+ p = original = "fooo\\ bar quux";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE|UNQUOTE_CUNESCAPE_RELAX) > 0);
+ assert_se(streq(t, "fooo\\ bar"));
+ free(t);
+ assert_se(p == original + 10);
+
+ p = original = "\\w+@\\K[\\d.]+";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE) == -EINVAL);
+ assert_se(p == original + 1);
+
+ p = original = "\\w+@\\K[\\d.]+";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE|UNQUOTE_CUNESCAPE_RELAX) > 0);
+ assert_se(streq(t, "\\w+@\\K[\\d.]+"));
+ free(t);
+ assert_se(p == original + 12);
+
+ p = original = "\\w+\\b";
+ assert_se(unquote_first_word(&p, &t, UNQUOTE_CUNESCAPE|UNQUOTE_CUNESCAPE_RELAX) > 0);
+ assert_se(streq(t, "\\w+\b"));
+ free(t);
+ assert_se(p == original + 5);
}
static void test_unquote_many_words(void) {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-14 01:42:52 +0000