strv: rework strv_split_quoted() to use unquote_first_word()

This should make the unquoting scheme a bit less naive.

6 files changed, 48 insertions, 46 deletions

diff --git a/src/journal-remote/journal-remote.c b/src/journal-remote/journal-remote.c
index 7239b8cc6..b3f5c828d 100644
--- a/src/journal-remote/journal-remote.c
+++ b/src/journal-remote/journal-remote.c
@@ -149,7 +149,7 @@ static int spawn_getter(const char *getter, const char *url) {
         _cleanup_strv_free_ char **words = NULL;
 
         assert(getter);
-        r = strv_split_quoted(&words, getter);
+        r = strv_split_quoted(&words, getter, false);
         if (r < 0) {
                 log_error("Failed to split getter option: %s", strerror(-r));
                 return r;
diff --git a/src/locale/localed.c b/src/locale/localed.c
index 552ffdf87..9377ce501 100644
--- a/src/locale/localed.c
+++ b/src/locale/localed.c
@@ -224,7 +224,7 @@ static int x11_read_data(Context *c) {
                 if (in_section && first_word(l, "Option")) {
                         _cleanup_strv_free_ char **a = NULL;
 
-                        r = strv_split_quoted(&a, l);
+                        r = strv_split_quoted(&a, l, false);
                         if (r < 0)
                                 return r;
 
@@ -247,7 +247,7 @@ static int x11_read_data(Context *c) {
                 } else if (!in_section && first_word(l, "Section")) {
                         _cleanup_strv_free_ char **a = NULL;
 
-                        r = strv_split_quoted(&a, l);
+                        r = strv_split_quoted(&a, l, false);
                         if (r < 0)
                                 return -ENOMEM;
 
@@ -533,7 +533,7 @@ static int read_next_mapping(FILE *f, unsigned *n, char ***a) {
                 if (l[0] == 0 || l[0] == '#')
                         continue;
 
-                r = strv_split_quoted(&b, l);
+                r = strv_split_quoted(&b, l, false);
                 if (r < 0)
                         return r;
 
diff --git a/src/shared/strv.c b/src/shared/strv.c
index 00857e40a..aeb93eac6 100644
--- a/src/shared/strv.c
+++ b/src/shared/strv.c
@@ -248,40 +248,6 @@ char **strv_split(const char *s, const char *separator) {
         return r;
 }
 
-int strv_split_quoted(char ***t, const char *s) {
-        const char *word, *state;
-        size_t l;
-        unsigned n, i;
-        char **r;
-
-        assert(s);
-
-        n = 0;
-        FOREACH_WORD_QUOTED(word, l, s, state)
-                n++;
-        if (!isempty(state))
-                /* bad syntax */
-                return -EINVAL;
-
-        r = new(char*, n+1);
-        if (!r)
-                return -ENOMEM;
-
-        i = 0;
-        FOREACH_WORD_QUOTED(word, l, s, state) {
-                r[i] = cunescape_length(word, l);
-                if (!r[i]) {
-                        strv_free(r);
-                        return -ENOMEM;
-                }
-                i++;
-        }
-
-        r[i] = NULL;
-        *t = r;
-        return 0;
-}
-
 char **strv_split_newlines(const char *s) {
         char **l;
         unsigned n;
@@ -307,6 +273,41 @@ char **strv_split_newlines(const char *s) {
         return l;
 }
 
+int strv_split_quoted(char ***t, const char *s, bool relax) {
+        size_t n = 0, allocated = 0;
+        _cleanup_strv_free_ char **l = NULL;
+        int r;
+
+        assert(t);
+        assert(s);
+
+        for (;;) {
+                _cleanup_free_ char *word = NULL;
+
+                r = unquote_first_word(&s, &word, relax);
+                if (r < 0)
+                        return r;
+                if (r == 0)
+                        break;
+
+                if (!GREEDY_REALLOC(l, allocated, n + 2))
+                        return -ENOMEM;
+
+                l[n++] = word;
+                word = NULL;
+
+                l[n] = NULL;
+        }
+
+        if (!l)
+                l = new0(char*, 1);
+
+        *t = l;
+        l = NULL;
+
+        return 0;
+}
+
 char *strv_join(char **l, const char *separator) {
         char *r, *e;
         char **s;
diff --git a/src/shared/strv.h b/src/shared/strv.h
index 9c9633c51..47618bd26 100644
--- a/src/shared/strv.h
+++ b/src/shared/strv.h
@@ -63,9 +63,10 @@ static inline bool strv_isempty(char * const *l) {
 }
 
 char **strv_split(const char *s, const char *separator);
-int strv_split_quoted(char ***t, const char *s);
 char **strv_split_newlines(const char *s);
 
+int strv_split_quoted(char ***t, const char *s, bool relax);
+
 char *strv_join(char **l, const char *separator);
 char *strv_join_quoted(char **l);
 
diff --git a/src/shared/util.c b/src/shared/util.c
index f0e0c0dd3..2f4fa237d 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -3292,7 +3292,7 @@ char **replace_env_argv(char **argv, char **env) {
                         if (e) {
                                 int r;
 
-                                r = strv_split_quoted(&m, e);
+                                r = strv_split_quoted(&m, e, true);
                                 if (r < 0) {
                                         ret[k] = NULL;
                                         strv_free(ret);
diff --git a/src/test/test-strv.c b/src/test/test-strv.c
index 915fa4675..180f06239 100644
--- a/src/test/test-strv.c
+++ b/src/test/test-strv.c
@@ -165,7 +165,7 @@ static void test_strv_quote_unquote(const char* const *split, const char *quoted
         assert_se(p);
         assert_se(streq(p, quoted));
 
-        r = strv_split_quoted(&s, quoted);
+        r = strv_split_quoted(&s, quoted, false);
         assert_se(r == 0);
         assert_se(s);
         STRV_FOREACH(t, s) {
@@ -182,7 +182,7 @@ static void test_strv_unquote(const char *quoted, const char **list) {
         char **t;
         int r;
 
-        r = strv_split_quoted(&s, quoted);
+        r = strv_split_quoted(&s, quoted, false);
         assert_se(r == 0);
         assert_se(s);
         j = strv_join(s, " | ");
@@ -199,7 +199,7 @@ static void test_invalid_unquote(const char *quoted) {
         char **s = NULL;
         int r;
 
-        r = strv_split_quoted(&s, quoted);
+        r = strv_split_quoted(&s, quoted, false);
         assert_se(s == NULL);
         assert_se(r == -EINVAL);
 }
@@ -482,12 +482,12 @@ int main(int argc, char *argv[]) {
         test_strv_unquote("  \"x'\"   ", (const char*[]) { "x'", NULL });
         test_strv_unquote("a  '--b=c \"d e\"'", (const char*[]) { "a", "--b=c \"d e\"", NULL });
 
-        test_invalid_unquote("a  --b='c \"d e\"'");
-        test_invalid_unquote("a  --b='c \"d e\" '");
+        test_invalid_unquote("a  --b='c \"d e\"''");
+        test_invalid_unquote("a  --b='c \"d e\" '\"");
         test_invalid_unquote("a  --b='c \"d e\"garbage");
         test_invalid_unquote("'");
         test_invalid_unquote("\"");
-        test_invalid_unquote("'x'y");
+        test_invalid_unquote("'x'y'g");
 
         test_strv_split();
         test_strv_split_newlines();