writeout_json: Fix data type issues

Load long values correctly (e.g. for http_code).

Use curl_off_t (not long) for:
- size_download (CURLINFO_SIZE_DOWNLOAD_T)
- size_upload (CURLINFO_SIZE_UPLOAD_T)

The unit for these values is bytes/second, not microseconds:
- speed_download (CURLINFO_SPEED_DOWNLOAD_T)
- speed_upload (CURLINFO_SPEED_UPLOAD_T)

Fixes #5131
Closes #5152

3 files changed, 19 insertions, 5 deletions

diff --git a/src/tool_writeout.c b/src/tool_writeout.c
index 9fbc8665d..32c95b45f 100644
--- a/src/tool_writeout.c
+++ b/src/tool_writeout.c
@@ -55,13 +55,13 @@ static const struct writeoutvar variables[] = {
   {"size_request", VAR_REQUEST_SIZE, 0,
    CURLINFO_REQUEST_SIZE, JSON_LONG},
   {"size_download", VAR_SIZE_DOWNLOAD, 0,
-   CURLINFO_SIZE_DOWNLOAD_T, JSON_LONG},
+   CURLINFO_SIZE_DOWNLOAD_T, JSON_OFFSET},
   {"size_upload", VAR_SIZE_UPLOAD, 0,
-   CURLINFO_SIZE_UPLOAD_T, JSON_LONG},
+   CURLINFO_SIZE_UPLOAD_T, JSON_OFFSET},
   {"speed_download", VAR_SPEED_DOWNLOAD, 0,
-   CURLINFO_SPEED_DOWNLOAD_T, JSON_TIME},
+   CURLINFO_SPEED_DOWNLOAD_T, JSON_OFFSET},
   {"speed_upload", VAR_SPEED_UPLOAD, 0,
-   CURLINFO_SPEED_UPLOAD_T, JSON_TIME},
+   CURLINFO_SPEED_UPLOAD_T, JSON_OFFSET},
   {"content_type", VAR_CONTENT_TYPE, 0,
    CURLINFO_CONTENT_TYPE, JSON_STRING},
   {"num_connects", VAR_NUM_CONNECTS, 0,
diff --git a/src/tool_writeout.h b/src/tool_writeout.h
index 64d759575..a21787ab9 100644
--- a/src/tool_writeout.h
+++ b/src/tool_writeout.h
@@ -65,6 +65,7 @@ typedef enum {
   JSON_NONE,
   JSON_STRING,
   JSON_LONG,
+  JSON_OFFSET,
   JSON_TIME,
   JSON_VERSION,
   JSON_FILENAME
diff --git a/src/tool_writeout_json.c b/src/tool_writeout_json.c
index 70235c209..dfe51b9ff 100644
--- a/src/tool_writeout_json.c
+++ b/src/tool_writeout_json.c
@@ -105,7 +105,7 @@ static int writeString(FILE *str, CURL *curl, const char *key, CURLINFO ci)
 
 static int writeLong(FILE *str, CURL *curl, const char *key, CURLINFO ci)
 {
-  curl_off_t val = 0;
+  long val = 0;
   if(CURLE_OK == curl_easy_getinfo(curl, ci, &val)) {
     fprintf(str, "\"%s\":%ld", key, val);
     return 1;
@@ -113,6 +113,16 @@ static int writeLong(FILE *str, CURL *curl, const char *key, CURLINFO ci)
   return 0;
 }
 
+static int writeOffset(FILE *str, CURL *curl, const char *key, CURLINFO ci)
+{
+  curl_off_t val = 0;
+  if(CURLE_OK == curl_easy_getinfo(curl, ci, &val)) {
+    fprintf(str, "\"%s\":%" CURL_FORMAT_CURL_OFF_T, key, val);
+    return 1;
+  }
+  return 0;
+}
+
 static int writeFilename(FILE *str, const char *key, const char *filename)
 {
   if(filename) {
@@ -160,6 +170,9 @@ void ourWriteOutJSON(const struct writeoutvar mappings[], CURL *curl,
     case JSON_LONG:
       ok = writeLong(stream, curl, name, cinfo);
       break;
+    case JSON_OFFSET:
+      ok = writeOffset(stream, curl, name, cinfo);
+      break;
     case JSON_TIME:
       ok = writeTime(stream, curl, name, cinfo);
       break;