URL-APIURL-API

See header file and man pages for API. All documented API details work
and are tested in the 1560 test case.

Closes #2842

1 files changed, 25 insertions, 19 deletions

diff --git a/lib/url.c b/lib/url.c
index a88ca495e..efa43cb09 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -1937,30 +1937,37 @@ static struct connectdata *allocate_conn(struct Curl_easy *data)
   return NULL;
 }
 
-static CURLcode findprotocol(struct Curl_easy *data,
-                             struct connectdata *conn,
-                             const char *protostr)
+/* returns the handdler if the given scheme is built-in */
+const struct Curl_handler *Curl_builtin_scheme(const char *scheme)
 {
   const struct Curl_handler * const *pp;
   const struct Curl_handler *p;
-
-  /* Scan protocol handler table and match against 'protostr' to set a few
-     variables based on the URL. Now that the handler may be changed later
-     when the protocol specific setup function is called. */
-  for(pp = protocols; (p = *pp) != NULL; pp++) {
-    if(strcasecompare(p->scheme, protostr)) {
+  /* Scan protocol handler table and match against 'scheme'. The handler may
+     be changed later when the protocol specific setup function is called. */
+  for(pp = protocols; (p = *pp) != NULL; pp++)
+    if(strcasecompare(p->scheme, scheme))
       /* Protocol found in table. Check if allowed */
-      if(!(data->set.allowed_protocols & p->protocol))
-        /* nope, get out */
-        break;
+      return p;
+  return NULL; /* not found */
+}
 
-      /* it is allowed for "normal" request, now do an extra check if this is
-         the result of a redirect */
-      if(data->state.this_is_a_follow &&
-         !(data->set.redir_protocols & p->protocol))
-        /* nope, get out */
-        break;
 
+static CURLcode findprotocol(struct Curl_easy *data,
+                             struct connectdata *conn,
+                             const char *protostr)
+{
+  const struct Curl_handler *p = Curl_builtin_scheme(protostr);
+
+  if(p && /* Protocol found in table. Check if allowed */
+     (data->set.allowed_protocols & p->protocol)) {
+
+    /* it is allowed for "normal" request, now do an extra check if this is
+       the result of a redirect */
+    if(data->state.this_is_a_follow &&
+       !(data->set.redir_protocols & p->protocol))
+      /* nope, get out */
+      ;
+    else {
       /* Perform setup complement if some. */
       conn->handler = conn->given = p;
 
@@ -1969,7 +1976,6 @@ static CURLcode findprotocol(struct Curl_easy *data,
     }
   }
 
-
   /* The protocol was not found in the table, but we don't have to assign it
      to anything since it is already assigned to a dummy-struct in the
      create_conn() function when the connectdata struct is allocated. */