rtp_engine: Ignore empty filenames in DTLS configuration.

When applying an empty DTLS configuration the filenames in the
configuration will be empty. This is actually valid to do and
each filename should simply be ignored.

Change-Id: Ib761dc235638a3fb701df337952f831fc3e69539

diff --git a/main/rtp_engine.c b/main/rtp_engine.c
index beda8cd745651d0ae67531ca5935446853973211..7c5ef311ad57c5ee40e80a45849cb718d203396e 100644 (file)
--- a/main/rtp_engine.c
+++ b/main/rtp_engine.c
@@ -1634,14 +1634,14 @@ int ast_rtp_dtls_cfg_parse(struct ast_rtp_dtls_cfg *dtls_cfg, const char *name,
                }
        } else if (!strcasecmp(name, "dtlscertfile")) {
                ast_free(dtls_cfg->certfile);
-               if (!ast_file_is_readable(value)) {
+               if (!ast_strlen_zero(value) && !ast_file_is_readable(value)) {
                        ast_log(LOG_ERROR, "%s file %s does not exist or is not readable\n", name, value);
                        return -1;
                }
                dtls_cfg->certfile = ast_strdup(value);
        } else if (!strcasecmp(name, "dtlsprivatekey")) {
                ast_free(dtls_cfg->pvtfile);
-               if (!ast_file_is_readable(value)) {
+               if (!ast_strlen_zero(value) && !ast_file_is_readable(value)) {
                        ast_log(LOG_ERROR, "%s file %s does not exist or is not readable\n", name, value);
                        return -1;
                }
@@ -1651,14 +1651,14 @@ int ast_rtp_dtls_cfg_parse(struct ast_rtp_dtls_cfg *dtls_cfg, const char *name,
                dtls_cfg->cipher = ast_strdup(value);
        } else if (!strcasecmp(name, "dtlscafile")) {
                ast_free(dtls_cfg->cafile);
-               if (!ast_file_is_readable(value)) {
+               if (!ast_strlen_zero(value) && !ast_file_is_readable(value)) {
                        ast_log(LOG_ERROR, "%s file %s does not exist or is not readable\n", name, value);
                        return -1;
                }
                dtls_cfg->cafile = ast_strdup(value);
        } else if (!strcasecmp(name, "dtlscapath") || !strcasecmp(name, "dtlscadir")) {
                ast_free(dtls_cfg->capath);
-               if (!ast_file_is_readable(value)) {
+               if (!ast_strlen_zero(value) && !ast_file_is_readable(value)) {
                        ast_log(LOG_ERROR, "%s file %s does not exist or is not readable\n", name, value);
                        return -1;
                }