diff options
| -rw-r--r-- | transport.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/transport.c b/transport.c index 1a360cfb4..f07bd33e8 100644 --- a/transport.c +++ b/transport.c @@ -870,6 +870,21 @@ 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; @@ -894,7 +909,7 @@ 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++; } @@ -928,7 +943,7 @@ 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); |