tools: append new line to string from poptStrerror()

https://fedorahosted.org/sssd/ticket/1756

Messages from poptStrerror() passed to BAD_POPT_PARAMS macro were
printed out to the console without new line character at the end of the
message. BAD_POPT_PARAMS should now behave correctly with strings both
with or without new line character at the end.

1 files changed, 13 insertions, 1 deletions

diff --git a/src/tools/tools_util.c b/src/tools/tools_util.c
index 731b2d04..85164c61 100644
--- a/src/tools/tools_util.c
+++ b/src/tools/tools_util.c
@@ -70,8 +70,20 @@ static int setup_db(struct tools_ctx *ctx)
  */
 void usage(poptContext pc, const char *error)
 {
+    size_t lentmp;
+    char nl[2] = "";
+
     poptPrintUsage(pc, stderr, 0);
-    if (error) fprintf(stderr, "%s", error);
+
+    if (error) {
+        lentmp = strlen(error);
+        if ((lentmp > 0) && (error[lentmp - 1] != '\n')) {
+            nl[0]='\n';
+            nl[1]='\0';
+        }
+
+        fprintf(stderr, "%s%s", error, nl);
+    }
 }
 
 int parse_groups(TALLOC_CTX *mem_ctx, const char *optstr, char ***_out)