[PATCH] Return CURL error message when object transfer fails

Return CURL error message when object transfer fails

[jc: added similar curl_errorstr errors to places where we
 use curl_easy_perform() to run fetch that _must_ succeed.]

Signed-off-by: Nick Hengeveld <nickh@reactrix.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/http-fetch.c b/http-fetch.c
index e6181b0..0caec10 100644 (file)
--- a/http-fetch.c
+++ b/http-fetch.c
@@ -15,6 +15,7 @@
 
 static CURL *curl;
 static struct curl_slist *no_pragma_header;
+static char curl_errorstr[CURL_ERROR_SIZE];
 
 static char *initial_base;
 
@@ -112,10 +113,12 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
        curl_easy_setopt(curl, CURLOPT_URL, url);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, no_pragma_header);
+       curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
        
        if (curl_easy_perform(curl)) {
                fclose(indexfile);
-               return error("Unable to get pack index %s", url);
+               return error("Unable to get pack index %s\n%s", url,
+                            curl_errorstr);
        }
 
        fclose(indexfile);
@@ -264,10 +267,10 @@ static int fetch_indices(struct alt_base *repo)
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
        curl_easy_setopt(curl, CURLOPT_URL, url);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, NULL);
+       curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
        
-       if (curl_easy_perform(curl)) {
-               return -1;
-       }
+       if (curl_easy_perform(curl))
+               return error("%s", curl_errorstr);
 
        while (i < buffer.posn) {
                switch (data[i]) {
@@ -327,10 +330,12 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite);
        curl_easy_setopt(curl, CURLOPT_URL, url);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, no_pragma_header);
-       
+       curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
+
        if (curl_easy_perform(curl)) {
                fclose(packfile);
-               return error("Unable to get pack file %s", url);
+               return error("Unable to get pack file %s\n%s", url,
+                            curl_errorstr);
        }
 
        fclose(packfile);
@@ -373,6 +378,7 @@ int fetch_object(struct alt_base *repo, unsigned char *sha1)
        curl_easy_setopt(curl, CURLOPT_FILE, NULL);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, no_pragma_header);
+       curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
 
        url = xmalloc(strlen(repo->base) + 50);
        strcpy(url, repo->base);
@@ -388,7 +394,7 @@ int fetch_object(struct alt_base *repo, unsigned char *sha1)
 
        if (curl_easy_perform(curl)) {
                unlink(filename);
-               return -1;
+               return error("%s", curl_errorstr);
        }
 
        fchmod(local, 0444);
@@ -453,6 +459,7 @@ int fetch_ref(char *ref, unsigned char *sha1)
         curl_easy_setopt(curl, CURLOPT_FILE, &buffer);
         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
        curl_easy_setopt(curl, CURLOPT_HTTPHEADER, NULL);
+       curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, curl_errorstr);
 
         url = xmalloc(strlen(base) + 6 + strlen(ref));
         strcpy(url, base);
@@ -464,7 +471,8 @@ int fetch_ref(char *ref, unsigned char *sha1)
         curl_easy_setopt(curl, CURLOPT_URL, url);
 
         if (curl_easy_perform(curl))
-                return error("Couldn't get %s for %s\n", url, ref);
+                return error("Couldn't get %s for %s\n%s",
+                            url, ref, curl_errorstr);
 
         hex[40] = '\0';
         get_sha1_hex(hex, sha1);