From 4dc2a589190ec985184fc7718fada38ffaf2743c Mon Sep 17 00:00:00 2001
From: Florian Forster <octo@leeloo.lan.home.verplant.org>
Date: Tue, 27 May 2008 17:13:35 +0200
Subject: [PATCH] processes plugin: Let `ps_list_register' fail if any part of
 the regex stuff fails.

---
 src/processes.c | 55 ++++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 42 insertions(+), 13 deletions(-)

diff --git a/src/processes.c b/src/processes.c
index 177a9fbb..b022b461 100644
--- a/src/processes.c
+++ b/src/processes.c
@@ -174,35 +174,64 @@ static void ps_list_register (const char *name, const char *regexp)
 {
 	procstat_t *new;
 	procstat_t *ptr;
+	int status;
 
-	if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
+	new = (procstat_t *) malloc (sizeof (procstat_t));
+	if (new == NULL)
+	{
+		ERROR ("processes plugin: ps_list_register: malloc failed.");
 		return;
+	}
 	memset (new, 0, sizeof (procstat_t));
 	sstrncpy (new->name, name, sizeof (new->name));
 
+#if HAVE_REGEX_H
 	if (regexp != NULL)
 	{
-#if HAVE_REGEX_H
 		DEBUG ("ProcessMatch: adding \"%s\" as criteria to process %s.", regexp, name);
-		if ((new->re = (regex_t *) malloc (sizeof (regex_t))) != NULL)
+		new->re = (regex_t *) malloc (sizeof (regex_t));
+		if (new->re == NULL)
 		{
-			if (regcomp(new->re, regexp, REG_EXTENDED|REG_NOSUB) != 0)
-			{
-				DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
-				sfree(new->re);
-			}
-		} else {
-			DEBUG("ProcessMatch: malloc failed when allocating memory for regexp!");
+			ERROR ("processes plugin: ps_list_register: malloc failed.");
+			sfree (new);
+			return;
+		}
+
+		status = regcomp (new->re, regexp, REG_EXTENDED | REG_NOSUB);
+		if (status != 0)
+		{
+			DEBUG ("ProcessMatch: compiling the regular expression \"%s\" failed.", regexp);
+			sfree(new->re);
+			return;
 		}
+	}
 #else
-		DEBUG("ProcessMatch: regexp '%s' met in config file, but regexps are not supported!", regexp);
-#endif
+	if (regexp != NULL)
+	{
+		ERROR ("processes plugin: ps_list_register: "
+				"Regular expression \"%s\" found in config "
+				"file, but support for regular expressions "
+				"has been dispabled at compile time.",
+				regexp);
+		sfree (new);
+		return;
 	}
+#endif
 	
 	for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 	{
 		if (strcmp (ptr->name, name) == 0)
+		{
+			WARNING ("processes plugin: You have configured more "
+					"than one `Process' or "
+					"`ProcessMatch' with the same name. "
+					"All but the first setting will be "
+					"ignored.");
+			sfree (new->re);
+			sfree (new);
 			return;
+		}
+
 		if (ptr->next == NULL)
 			break;
 	}
@@ -211,7 +240,7 @@ static void ps_list_register (const char *name, const char *regexp)
 		list_head_g = new;
 	else
 		ptr->next = new;
-}
+} /* void ps_list_register */
 
 /* try to match name against entry, returns 1 if success */
 static int ps_list_match (const char *name, const char *cmdline, procstat_t *ps)
-- 
2.11.0