Bug #351570: Hidden function fixes: rc_conf_value.

Refactor rc_conf_value into librc for use in library context.
Also requires moving:
- rc_conf internal static
- Defines: PROFILE_ENV, SYS_WHITELIST, USR_WHITELIST, RC_PATH_PREFIX
  moved to rc.h with new RC_ prefix added.
- Defines: RC_CONF, RC_CONF_OLD moved to rc.h.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

src/librc/librc-misc.c

@@ -218,3 +218,54 @@ rc_config_value(RC_STRINGLIST *list, const char *entry)
 	return NULL;
 }
 librc_hidden_def(rc_config_value)
+
+/* Global for caching the strings loaded from rc.conf to avoid reparsing for
+ * each rc_conf_value call */
+static RC_STRINGLIST *rc_conf = NULL;
+
+char *
+rc_conf_value(const char *setting)
+{
+	RC_STRINGLIST *old;
+	RC_STRING *s;
+	char *p;
+
+	if (! rc_conf) {
+		rc_conf = rc_config_load(RC_CONF);
+#ifdef DEBUG_MEMORY
+		atexit(_free_rc_conf);
+#endif
+
+		/* Support old configs */
+		if (exists(RC_CONF_OLD)) {
+			old = rc_config_load(RC_CONF_OLD);
+			TAILQ_CONCAT(rc_conf, old, entries);
+#ifdef DEBUG_MEMORY
+			free(old);
+#endif
+		}
+
+		/* Convert old uppercase to lowercase */
+		TAILQ_FOREACH(s, rc_conf, entries) {
+			p = s->value;
+			while (p && *p && *p != '=') {
+				if (isupper((unsigned char)*p))
+					*p = tolower((unsigned char)*p);
+				p++;
+			}
+		}
+	}
+
+	return rc_config_value(rc_conf, setting);
+}
+librc_hidden_def(rc_conf_value)
+
+#ifdef DEBUG_MEMORY
+static void
+_free_rc_conf(void)
+{
+	rc_stringlist_free(rc_conf);
+}
+#endif
+
+

src/librc/librc.h

@@ -72,6 +72,7 @@
 #define librc_hidden_proto(x) hidden_proto(x)
 #define librc_hidden_def(x) hidden_def(x)
 
+librc_hidden_proto(rc_conf_value)
 librc_hidden_proto(rc_config_list)
 librc_hidden_proto(rc_config_load)
 librc_hidden_proto(rc_config_value)

src/librc/rc.h.in

@@ -43,6 +43,14 @@ __BEGIN_DECLS
 #define RC_CONFDIR              RC_SYSCONFDIR "/conf.d"
 #define RC_PLUGINDIR            RC_LIBDIR "/plugins"
 
+#define RC_PROFILE_ENV     RC_SYSCONFDIR "/profile.env"
+#define RC_SYS_WHITELIST   RC_LIBEXECDIR "/conf.d/env_whitelist"
+#define RC_USR_WHITELIST   RC_SYSCONFDIR "/conf.d/env_whitelist"
+#define RC_CONF         RC_SYSCONFDIR "/rc.conf"
+#define RC_CONF_OLD     RC_SYSCONFDIR "/conf.d/rc"
+
+#define RC_PATH_PREFIX     RC_LIBEXECDIR "/bin:/bin:/sbin:/usr/bin:/usr/sbin"
+
 /* PKG_PREFIX is where packages are installed if different from the base OS
  * On Gentoo this is normally unset, on FreeBSD /usr/local and on NetBSD
  * /usr/pkg. */
@@ -462,6 +470,9 @@ RC_STRINGLIST *rc_config_load(const char *);
 /*! Return the value of the entry from a key=value list. */
 char *rc_config_value(RC_STRINGLIST *, const char *);
 
+/*! Return the value of the entry from rc.conf. */
+char *rc_conf_value(const char *);
+
 /*! Check if a variable is a boolean and return its value.
  * If variable is not a boolean then we set errno to be ENOENT when it does
  * not exist or EINVAL if it's not a boolean.

src/librc/rc.map

@@ -1,5 +1,6 @@
 RC_1.0 {
 global:
+	rc_conf_value;
 	rc_config_list;
 	rc_config_load;
 	rc_config_value;

src/rc/rc-misc.c

@@ -52,62 +52,8 @@
 #include "rc-misc.h"
 #include "version.h"
 
-#define PROFILE_ENV     RC_SYSCONFDIR "/profile.env"
-#define SYS_WHITELIST   RC_LIBEXECDIR "/conf.d/env_whitelist"
-#define USR_WHITELIST   RC_SYSCONFDIR "/conf.d/env_whitelist"
-#define RC_CONF         RC_SYSCONFDIR "/rc.conf"
-#define RC_CONF_OLD     RC_SYSCONFDIR "/conf.d/rc"
-
-#define PATH_PREFIX     RC_LIBEXECDIR "/bin:/bin:/sbin:/usr/bin:/usr/sbin"
-
-static RC_STRINGLIST *rc_conf = NULL;
-
 extern char **environ;
 
-#ifdef DEBUG_MEMORY
-static void
-_free_rc_conf(void)
-{
-	rc_stringlist_free(rc_conf);
-}
-#endif
-
-char *
-rc_conf_value(const char *setting)
-{
-	RC_STRINGLIST *old;
-	RC_STRING *s;
-	char *p;
-
-	if (! rc_conf) {
-		rc_conf = rc_config_load(RC_CONF);
-#ifdef DEBUG_MEMORY
-		atexit(_free_rc_conf);
-#endif
-
-		/* Support old configs */
-		if (exists(RC_CONF_OLD)) {
-			old = rc_config_load(RC_CONF_OLD);
-			TAILQ_CONCAT(rc_conf, old, entries);
-#ifdef DEBUG_MEMORY
-			free(old);
-#endif
-		}
-
-		/* Convert old uppercase to lowercase */
-		TAILQ_FOREACH(s, rc_conf, entries) {
-			p = s->value;
-			while (p && *p && *p != '=') {
-				if (isupper((unsigned char)*p))
-					*p = tolower((unsigned char)*p);
-				p++;
-			}
-		}
-	}
-
-	return rc_config_value(rc_conf, setting);
-}
-
 bool
 rc_conf_yesno(const char *setting)
 {
@@ -135,7 +81,7 @@ env_filter(void)
 
 	/* Add the user defined list of vars */
 	env_allow = rc_stringlist_split(rc_conf_value("rc_env_allow"), " ");
-	profile = rc_config_load(PROFILE_ENV);
+	profile = rc_config_load(RC_PROFILE_ENV);
 
 	/* Copy the env and work from this so we can manipulate it safely */
 	env_list = rc_stringlist_new();
@@ -181,7 +127,7 @@ env_filter(void)
 void
 env_config(void)
 {
-	size_t pplen = strlen(PATH_PREFIX);
+	size_t pplen = strlen(RC_PATH_PREFIX);
 	char *path;
 	char *p;
 	char *e;
@@ -199,16 +145,16 @@ env_config(void)
 	   for a little extra security */
 	path = getenv("PATH");
 	if (! path)
-		setenv("PATH", PATH_PREFIX, 1);
+		setenv("PATH", RC_PATH_PREFIX, 1);
-	else if (strncmp (PATH_PREFIX, path, pplen) != 0) {
+	else if (strncmp (RC_PATH_PREFIX, path, pplen) != 0) {
 		l = strlen(path) + pplen + 3;
 		e = p = xmalloc(sizeof(char) * l);
-		p += snprintf(p, l, "%s", PATH_PREFIX);
+		p += snprintf(p, l, "%s", RC_PATH_PREFIX);
 
 		/* Now go through the env var and only add bits not in our
 		 * PREFIX */
 		while ((token = strsep(&path, ":"))) {
-			np = npp = xstrdup(PATH_PREFIX);
+			np = npp = xstrdup(RC_PATH_PREFIX);
 			while ((tok = strsep(&npp, ":")))
 				if (strcmp(tok, token) == 0)
 					break;

src/test/librc.funcs.hidden.list

@@ -1,3 +1,4 @@
+rc_conf_value
 rc_config_list
 rc_config_load
 rc_config_value

src/test/rc.funcs.list

@@ -1,3 +1,5 @@
+rc_conf_value
+rc_conf_value@@RC_1.0
 rc_config_list
 rc_config_list@@RC_1.0
 rc_config_load