[gnurl] 80/151: curl: show better error message when no homedir is found

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ng0 pushed a commit to branch master
in repository gnurl.

commit 7dffc2b46f78e15ac0f8e19a2c8ebeba0c032aa4
Author: Daniel Stenberg <address@hidden>
AuthorDate: Mon Dec 2 12:00:41 2019 +0100

    curl: show better error message when no homedir is found
    
    Reported-by: Vlastimil Ovčáčík
    Fixes #4644
    Closes #4665
---
 src/tool_msgs.c    | 14 ++++++++++++++
 src/tool_msgs.h    |  2 +-
 src/tool_operate.c |  5 ++++-
 3 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/tool_msgs.c b/src/tool_msgs.c
index 48c724940..c0e85aee6 100644
--- a/src/tool_msgs.c
+++ b/src/tool_msgs.c
@@ -32,6 +32,7 @@
 
 #define WARN_PREFIX "Warning: "
 #define NOTE_PREFIX "Note: "
+#define ERROR_PREFIX "curl: "
 
 static void voutf(struct GlobalConfig *config,
                   const char *prefix,
@@ -122,3 +123,16 @@ void helpf(FILE *errors, const char *fmt, ...)
 #endif
           "for more information\n");
 }
+
+/*
+ * Emit error message on error stream if not muted.
+ */
+void errorf(struct GlobalConfig *config, const char *fmt, ...)
+{
+  if(!config->mute) {
+    va_list ap;
+    va_start(ap, fmt);
+    voutf(config, ERROR_PREFIX, fmt, ap);
+    va_end(ap);
+  }
+}
diff --git a/src/tool_msgs.h b/src/tool_msgs.h
index bd8480d30..2c4afd180 100644
--- a/src/tool_msgs.h
+++ b/src/tool_msgs.h
@@ -25,7 +25,7 @@
 
 void warnf(struct GlobalConfig *config, const char *fmt, ...);
 void notef(struct GlobalConfig *config, const char *fmt, ...);
-
 void helpf(FILE *errors, const char *fmt, ...);
+void errorf(struct GlobalConfig *config, const char *fmt, ...);
 
 #endif /* HEADER_CURL_TOOL_MSGS_H */
diff --git a/src/tool_operate.c b/src/tool_operate.c
index 23971f112..ab3a7f1a0 100644
--- a/src/tool_operate.c
+++ b/src/tool_operate.c
@@ -1615,7 +1615,7 @@ static CURLcode single_transfer(struct GlobalConfig 
*global,
           if(!config->insecure_ok) {
             char *home;
             char *file;
-            result = CURLE_OUT_OF_MEMORY;
+            result = CURLE_FAILED_INIT;
             home = homedir();
             if(home) {
               file = aprintf("%s/.ssh/known_hosts", home);
@@ -1629,6 +1629,9 @@ static CURLcode single_transfer(struct GlobalConfig 
*global,
               }
               Curl_safefree(home);
             }
+            else {
+              errorf(global, "Failed to figure out user's home dir!");
+            }
             if(result)
               break;
           }

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