From 026e055c58bad7c901f94a35bc738bf5c8778914 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Mon, 22 Oct 2018 00:09:49 +0200
Subject: Curl_follow: return better errors on URL problems

... by making the converter function global and accessible.
---
 lib/transfer.c |  6 ++----
 lib/url.c      | 18 +++++++++---------
 lib/url.h      |  1 +
 3 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/lib/transfer.c b/lib/transfer.c
index e6d98cfa4..c7f4ef9f3 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -1516,13 +1516,11 @@ CURLcode Curl_follow(struct Curl_easy *data,
   DEBUGASSERT(data->state.uh);
   uc = curl_url_set(data->state.uh, CURLUPART_URL, newurl, 0);
   if(uc)
-    /* TODO: consider an error code remap here */
-    return CURLE_URL_MALFORMAT;
+    return Curl_uc_to_curlcode(uc);
 
   uc = curl_url_get(data->state.uh, CURLUPART_URL, &newurl, 0);
   if(uc)
-    /* TODO: consider an error code remap here */
-    return CURLE_OUT_OF_MEMORY;
+    return Curl_uc_to_curlcode(uc);
 
   if(type == FOLLOW_FAKE) {
     /* we're only figuring out the new url if we would've followed locations
diff --git a/lib/url.c b/lib/url.c
index 0cc7d591a..723b89806 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -1996,7 +1996,7 @@ static CURLcode findprotocol(struct Curl_easy *data,
 }
 
 
-static CURLcode uc_to_curlcode(CURLUcode uc)
+CURLcode Curl_uc_to_curlcode(CURLUcode uc)
 {
   switch(uc) {
   default:
@@ -2048,11 +2048,11 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
                      CURLU_DISALLOW_USER : 0) |
                     (data->set.path_as_is ? CURLU_PATH_AS_IS : 0));
   if(uc)
-    return uc_to_curlcode(uc);
+    return Curl_uc_to_curlcode(uc);
 
   uc = curl_url_get(uh, CURLUPART_SCHEME, &data->state.up.scheme, 0);
   if(uc)
-    return uc_to_curlcode(uc);
+    return Curl_uc_to_curlcode(uc);
 
   result = findprotocol(data, conn, data->state.up.scheme);
   if(result)
@@ -2067,7 +2067,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
     conn->bits.user_passwd = TRUE;
   }
   else if(uc != CURLUE_NO_USER)
-    return uc_to_curlcode(uc);
+    return Curl_uc_to_curlcode(uc);
 
   uc = curl_url_get(uh, CURLUPART_PASSWORD, &data->state.up.password,
                     CURLU_URLDECODE);
@@ -2078,7 +2078,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
     conn->bits.user_passwd = TRUE;
   }
   else if(uc != CURLUE_NO_PASSWORD)
-    return uc_to_curlcode(uc);
+    return Curl_uc_to_curlcode(uc);
 
   uc = curl_url_get(uh, CURLUPART_OPTIONS, &data->state.up.options,
                     CURLU_URLDECODE);
@@ -2088,7 +2088,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
       return CURLE_OUT_OF_MEMORY;
   }
   else if(uc != CURLUE_NO_OPTIONS)
-    return uc_to_curlcode(uc);
+    return Curl_uc_to_curlcode(uc);
 
   uc = curl_url_get(uh, CURLUPART_HOST, &data->state.up.hostname, 0);
   if(uc) {
@@ -2098,7 +2098,7 @@ static CURLcode parseurlandfillconn(struct Curl_easy *data,
 
   uc = curl_url_get(uh, CURLUPART_PATH, &data->state.up.path, 0);
   if(uc)
-    return uc_to_curlcode(uc);
+    return Curl_uc_to_curlcode(uc);
 
   uc = curl_url_get(uh, CURLUPART_PORT, &data->state.up.port,
                     CURLU_DEFAULT_PORT);
@@ -3082,12 +3082,12 @@ static CURLcode override_login(struct Curl_easy *data,
   if(user_changed) {
     uc = curl_url_set(data->state.uh, CURLUPART_USER, *userp, 0);
     if(uc)
-      return uc_to_curlcode(uc);
+      return Curl_uc_to_curlcode(uc);
   }
   if(passwd_changed) {
     uc = curl_url_set(data->state.uh, CURLUPART_PASSWORD, *passwdp, 0);
     if(uc)
-      return uc_to_curlcode(uc);
+      return Curl_uc_to_curlcode(uc);
   }
   return CURLE_OK;
 }
diff --git a/lib/url.h b/lib/url.h
index 1c18f7137..095d63833 100644
--- a/lib/url.h
+++ b/lib/url.h
@@ -50,6 +50,7 @@ CURLcode Curl_init_userdefined(struct Curl_easy *data);
 void Curl_freeset(struct Curl_easy * data);
 /* free the URL pieces */
 void Curl_up_free(struct Curl_easy *data);
+CURLcode Curl_uc_to_curlcode(CURLUcode uc);
 CURLcode Curl_close(struct Curl_easy *data); /* opposite of curl_open() */
 CURLcode Curl_connect(struct Curl_easy *, struct connectdata **,
                       bool *async, bool *protocol_connect);
-- 
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