tool_cb_wrt: use "curl_response" if no file name in URL

Use the same fallback for content-disposition cases as for regular -O

Add test692: verify -JO with URL without a file name

Reported-by: Brian Inglis
Fixes #14939
Closes #14940

src/tool_cb_wrt.c

@@ -54,14 +54,11 @@ bool tool_create_output_file(struct OutStruct *outs,
 {
   struct GlobalConfig *global;
   FILE *file = NULL;
-  char *fname = outs->filename;
+  const char *fname = outs->filename;
   DEBUGASSERT(outs);
   DEBUGASSERT(config);
   global = config->global;
-  if(!fname || !*fname) {
-    warnf(global, "Remote filename has no length");
-    return FALSE;
-  }
+  DEBUGASSERT(fname && *fname);
 
   if(config->file_clobber_mode == CLOBBER_ALWAYS ||
      (config->file_clobber_mode == CLOBBER_DEFAULT &&

src/tool_operate.c

@@ -1158,21 +1158,12 @@ static CURLcode single_transfer(struct GlobalConfig *global,
 
           if(!per->outfile) {
             /* extract the filename from the URL */
-            result = get_url_file_name(&per->outfile, per->this_url);
+            result = get_url_file_name(global, &per->outfile, per->this_url);
             if(result) {
-              errorf(global, "Failed to extract a sensible filename"
+              errorf(global, "Failed to extract a filename"
                      " from the URL to use for storage");
               break;
             }
-            if(!*per->outfile && !config->content_disposition) {
-              free(per->outfile);
-              per->outfile = strdup("curl_response");
-              if(!per->outfile) {
-                result = CURLE_OUT_OF_MEMORY;
-                break;
-              }
-              warnf(global, "No remote file name, uses \"%s\"", per->outfile);
-            }
           }
           else if(state->urls) {
             /* fill '#1' ... '#9' terms from URL pattern */
@@ -1190,6 +1181,7 @@ static CURLcode single_transfer(struct GlobalConfig *global,
               break;
             }
           }
+          DEBUGASSERT(per->outfile);
 
           if(config->output_dir && *config->output_dir) {
             char *d = aprintf("%s/%s", config->output_dir, per->outfile);
@@ -1210,7 +1202,7 @@ static CURLcode single_transfer(struct GlobalConfig *global,
               break;
           }
 
-          if(per->outfile && config->skip_existing) {
+          if(config->skip_existing) {
             struct_stat fileinfo;
             if(!stat(per->outfile, &fileinfo)) {
               /* file is present */

src/tool_operhlp.c

@@ -31,6 +31,7 @@
 #include "tool_cfgable.h"
 #include "tool_doswin.h"
 #include "tool_operhlp.h"
+#include "tool_msgs.h"
 
 #include "memdebug.h" /* keep this as LAST include */
 
@@ -178,7 +179,8 @@ fail:
  * Returns a pointer to a heap-allocated string or NULL if
  * no name part, at location indicated by first argument.
  */
-CURLcode get_url_file_name(char **filename, const char *url)
+CURLcode get_url_file_name(struct GlobalConfig *global,
+                           char **filename, const char *url)
 {
   CURLU *uh = curl_url();
   char *path = NULL;
@@ -212,9 +214,11 @@ CURLcode get_url_file_name(char **filename, const char *url)
       if(pc)
         /* duplicate the string beyond the slash */
         pc++;
-      else
-        /* no slash => empty string */
-        pc = (char *)"";
+      else {
+        /* no slash => empty string, use default */
+        pc = (char *)"curl_response";
+        warnf(global, "No remote file name, uses \"%s\"", pc);
+      }
 
       *filename = strdup(pc);
       curl_free(path);

src/tool_operhlp.h

@@ -35,7 +35,8 @@ bool stdin_upload(const char *uploadfile);
 
 CURLcode add_file_name_to_url(CURL *curl, char **inurlp, const char *filename);
 
-CURLcode get_url_file_name(char **filename, const char *url);
+CURLcode get_url_file_name(struct GlobalConfig *global,
+                           char **filename, const char *url);
 
 CURLcode urlerr_cvt(CURLUcode ucode);
 

tests/data/Makefile.am

@@ -101,7 +101,7 @@ test652 test653 test654 test655 test656 test658 test659 test660 test661 \
 test662 test663 test664 test665 test666 test667 test668 test669 test670 \
 test671 test672 test673 test674 test675 test676 test677 test678 test679 \
 test680 test681 test682 test683 test684 test685 test686 test687 test688 \
-test689 test690 test691 \
+test689 test690 test691 test692 \
 \
 test700 test701 test702 test703 test704 test705 test706 test707 test708 \
 test709 test710 test711 test712 test713 test714 test715 test716 test717 \

tests/data/test692

@@ -0,0 +1,56 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+HTTP GET
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data crlf="yes" nocheck="yes">
+HTTP/1.1 200 OK
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Last-Modified: Tue, 13 Jun 2000 12:10:00 GMT
+ETag: "21025-dc7-39462498"
+Accept-Ranges: bytes
+Content-Length: 6
+Connection: close
+Content-Type: text/html
+Funny-head: yesyes
+
+-foo-
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+http
+</server>
+<name>
+-JO with URL without path using trailing slash
+</name>
+<command option="no-output/no-include">
+http://%HOSTIP:%HTTPPORT/ -JO --output-dir %LOGDIR
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol crlf="yes">
+GET / HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+User-Agent: curl/%VERSION
+Accept: */*
+
+</protocol>
+<file crlf="yes" name="%LOGDIR/curl_response">
+-foo-
+</file>
+</verify>
+</testcase>