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authorChristian Grothoff <christian@grothoff.org>2021-08-02 19:48:37 +0200
committerChristian Grothoff <christian@grothoff.org>2021-08-02 19:48:37 +0200
commit3a6ae694ecba19af06d84906facbcb5f7d51d72b (patch)
tree8f7c57fa0233300407436b6779c1c4b468d1bf01 /src
parent2ce37548c0b204eace2661992b23214cfd0e0b4b (diff)
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-work on #6948
Diffstat (limited to 'src')
-rw-r--r--src/include/taler_util.h9
-rw-r--r--src/util/url.c16
2 files changed, 25 insertions, 0 deletions
diff --git a/src/include/taler_util.h b/src/include/taler_util.h
index 33c126cb..59824a52 100644
--- a/src/include/taler_util.h
+++ b/src/include/taler_util.h
@@ -183,6 +183,15 @@ TALER_project_data_default (void);
char *
TALER_urlencode (const char *s);
+/**
+ * Test if all characters in @a url are valid for
+ * a URL.
+ *
+ * @param url URL to sanity-check
+ * @return true if @a url only contains valid characters
+ */
+bool
+TALER_url_valid_charset (const char *url);
/**
* Check if @a lang matches the @a language_pattern, and if so with
diff --git a/src/util/url.c b/src/util/url.c
index 5962a18b..3fbc4a04 100644
--- a/src/util/url.c
+++ b/src/util/url.c
@@ -365,4 +365,20 @@ TALER_url_absolute_raw (const char *proto,
}
+bool
+TALER_url_valid_charset (const char *url)
+{
+ for (unsigned int i = 0; '\0' != url[i]; i++)
+ {
+#define ALLOWED_CHARACTERS \
+ "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/:&?-.,=_~%"
+ if (NULL == strchr (ALLOWED_CHARACTERS,
+ (int) url[i]))
+ return false;
+#undef ALLOWED_CHARACTERS
+ }
+ return true;
+}
+
+
/* end of url.c */