According to relevant RFCs, in addition to alphanumerics, the following
characters are valid in URL scheme parts: '+', '-' and '.', but
currently only alphanumerics are allowed in remote helper names.
Allow those three characters in remote helper names (both 'foo://' and
'foo::' syntax).
Signed-off-by: Ilari Liusvaara <ilari.liusvaara@xxxxxxxxxxx>
---
transport.c | 19 +++++++++++++++++--
1 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/transport.c b/transport.c
index 08e4fa0..00acff1 100644
--- a/transport.c
+++ b/transport.c
@@ -872,6 +872,21 @@ static int is_file(const char *url)
return S_ISREG(buf.st_mode);
}
+static int isurlschemechar(int first_flag, int ch)
+{
+ /*
+ * The set of valid URL schemes, as per STD66 (RFC3986) is
+ * '[A-Za-z][A-Za-z0-9+.-]*'. But use sightly looser check
+ * of '[A-Za-z0-9][A-Za-z0-9+.-]*' because earlier version
+ * of check used '[A-Za-z0-9]+' so not to break any remote
+ * helpers.
+ */
+ int alphanumeric, special;
+ alphanumeric = ch > 0 && isalnum(ch);
+ special = ch == '+' || ch == '-' || ch == '.';
+ return alphanumeric || (!first_flag && special);
+}
+
static int is_url(const char *url)
{
const char *url2, *first_slash;
@@ -896,7 +911,7 @@ static int is_url(const char *url)
*/
url2 = url;
while (url2 < first_slash - 1) {
- if (!isalnum((unsigned char)*url2))
+ if (!isurlschemechar(url2 == url, (unsigned char)*url2))
return 0;
url2++;
}
@@ -930,7 +945,7 @@ struct transport *transport_get(struct remote *remote, const char *url)
if (url) {
const char *p = url;
- while (isalnum(*p))
+ while (isurlschemechar(p == url, *p))
p++;
if (!prefixcmp(p, "::"))
helper = xstrndup(url, p - url);
--
1.7.0.86.gb35cab
--
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