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-rw-r--r--lib/url.c69
1 files changed, 57 insertions, 12 deletions
diff --git a/lib/url.c b/lib/url.c
index 0e420c7a3..40751cc56 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -3951,23 +3951,59 @@ static CURLcode parseurlandfillconn(struct SessionHandle *data,
if(result != CURLE_OK)
return result;
- if(conn->host.name[0] == '[') {
+ if(conn->host.name[0] == '[' && !data->state.this_is_a_follow) {
/* This looks like an IPv6 address literal. See if there is an address
- scope. */
- char *percent = strstr (conn->host.name, "%25");
+ scope if there is no location header */
+ char *percent = strchr(conn->host.name, '%');
if(percent) {
+ unsigned int identifier_offset = 3;
char *endp;
- unsigned long scope = strtoul (percent + 3, &endp, 10);
+ unsigned long scope;
+ if(strncmp("%25", percent, 3) != 0) {
+ infof(data,
+ "Please URL encode %% as %%25, see RFC 6874.\n");
+ identifier_offset = 1;
+ }
+ scope = strtoul(percent + identifier_offset, &endp, 10);
if(*endp == ']') {
/* The address scope was well formed. Knock it out of the
hostname. */
memmove(percent, endp, strlen(endp)+1);
- if(!data->state.this_is_a_follow)
- /* Don't honour a scope given in a Location: header */
- conn->scope = (unsigned int)scope;
+ conn->scope = (unsigned int)scope;
+ }
+ else {
+ /* Zone identifier is not numeric */
+#ifdef HAVE_NET_IF_H
+ char ifname[IFNAMSIZ + 2];
+ char *square_bracket;
+ unsigned int scopeidx = 0;
+ strncpy(ifname, percent + identifier_offset, IFNAMSIZ + 2);
+ /* Ensure nullbyte termination */
+ ifname[IFNAMSIZ + 1] = '\0';
+ square_bracket = strchr(ifname, ']');
+ if(square_bracket) {
+ /* Remove ']' */
+ *square_bracket = '\0';
+ scopeidx = if_nametoindex(ifname);
+ if(scopeidx == 0) {
+ infof(data, "Invalid network interface: %s; %s\n", ifname,
+ strerror(errno));
+ }
+ }
+ if(scopeidx > 0) {
+ /* Remove zone identifier from hostname */
+ memmove(percent,
+ percent + identifier_offset + strlen(ifname),
+ identifier_offset + strlen(ifname));
+ conn->scope = scopeidx;
+ }
+ else {
+#endif /* HAVE_NET_IF_H */
+ infof(data, "Invalid IPv6 address format\n");
+#ifdef HAVE_NET_IF_H
+ }
+#endif /* HAVE_NET_IF_H */
}
- else
- infof(data, "Invalid IPv6 address format\n");
}
}
@@ -4350,12 +4386,21 @@ static CURLcode parse_proxy(struct SessionHandle *data,
/* start scanning for port number at this point */
portptr = proxyptr;
- /* detect and extract RFC2732-style IPv6-addresses */
+ /* detect and extract RFC6874-style IPv6-addresses */
if(*proxyptr == '[') {
char *ptr = ++proxyptr; /* advance beyond the initial bracket */
- while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '%') ||
- (*ptr == '.')))
+ while(*ptr && (ISXDIGIT(*ptr) || (*ptr == ':') || (*ptr == '.')))
+ ptr++;
+ if(*ptr == '%') {
+ /* There might be a zone identifier */
+ if(strncmp("%25", ptr, 3))
+ infof(data, "Please URL encode %% as %%25, see RFC 6874.\n");
ptr++;
+ /* Allow unresered characters as defined in RFC 3986 */
+ while(*ptr && (ISALPHA(*ptr) || ISXDIGIT(*ptr) || (*ptr == '-') ||
+ (*ptr == '.') || (*ptr == '_') || (*ptr == '~')))
+ ptr++;
+ }
if(*ptr == ']')
/* yeps, it ended nicely with a bracket as well */
*ptr++ = 0;