1 files changed, 92 insertions, 0 deletions
diff --git a/VNFs/DPPD-PROX/file_utils.c b/VNFs/DPPD-PROX/file_utils.c
new file mode 100644
index 00000000..b3cf0846
--- /dev/null
+++ b/VNFs/DPPD-PROX/file_utils.c
@@ -0,0 +1,92 @@
+/*
+// Copyright (c) 2010-2017 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+
+#include <stdio.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "prox_args.h"
+#include "file_utils.h"
+
+static char file_error_string[128] = {0};
+
+const char *file_get_error(void)
+{
+	return file_error_string;
+}
+
+__attribute__((format(printf, 1 ,2))) static void file_set_error(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsnprintf(file_error_string, sizeof(file_error_string), fmt, ap);
+	va_end(ap);
+}
+
+static void resolve_path_cfg_dir(char *file_name, size_t len, const char *path)
+{
+	if (path[0] != '/')
+		snprintf(file_name, len, "%s/%s", get_cfg_dir(), path);
+	else
+		strncpy(file_name, path, len);
+}
+
+long file_get_size(const char *path)
+{
+	char file_name[PATH_MAX];
+	struct stat s;
+
+	resolve_path_cfg_dir(file_name, sizeof(file_name), path);
+
+	if (stat(file_name, &s)) {
+		file_set_error("Stat failed on '%s': %s", path, strerror(errno));
+		return -1;
+	}
+
+	if ((s.st_mode & S_IFMT) != S_IFREG) {
+		snprintf(file_error_string, sizeof(file_error_string), "'%s' is not a file", path);
+		return -1;
+	}
+
+	return s.st_size;
+}
+
+int file_read_content(const char *path, uint8_t *mem, size_t beg, size_t len)
+{
+	char file_name[PATH_MAX];
+	FILE *f;
+
+	resolve_path_cfg_dir(file_name, sizeof(file_name), path);
+	f = fopen(file_name, "r");
+	if (!f) {
+		file_set_error("Failed to read '%s': %s", path, strerror(errno));
+		return -1;
+	}
+
+	fseek(f, beg, SEEK_SET);
+
+	size_t ret = fread(mem, 1, len, f);
+	if ((uint32_t)ret !=  len) {
+		file_set_error("Failed to read '%s:%zu' for %zu bytes: got %zu\n", file_name, beg, len, ret);
+		return -1;
+	}
+
+	fclose(f);
+	return 0;
+}