1 files changed, 105 insertions, 0 deletions
diff --git a/c_src/util.c b/c_src/util.c
new file mode 100644
index 0000000..76294eb
--- /dev/null
+++ b/c_src/util.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2015, NORDUnet A/S.
+ * See LICENSE for licensing information.
+ */
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <arpa/inet.h>
+#include <fcntl.h>
+#include <err.h>
+#include <nettle/sha2.h>
+#include "erlport.h"
+#include "permdb.h"
+#include "util.h"
+
+void
+set_error(char **error, const char *format, ...)
+{
+        va_list args;
+        int ret;
+
+        if (error == NULL) {
+                return;
+        }
+
+        va_start(args, format);
+        char *formatted = NULL;
+        ret = vasprintf (&formatted, format, args);
+        if (ret == -1) {
+                fprintf(stderr, "vasprintf error\n");
+                return;
+        }
+        if (*error) {
+                free(*error);
+        }
+        fprintf(stderr, "error: %s\n", formatted);
+        *error = formatted;
+        va_end(args);
+}
+
+int
+calc_padding(int offset, int alignment)
+{
+        int misalign = offset % alignment;
+        if (misalign == 0) {
+                return 0;
+        }
+        return alignment - misalign;
+}
+
+void
+print_entry(node_object node)
+{
+        for (int i = 0; i < entriespernode; i++) {
+                fprintf(stderr, " %016llx", (long long unsigned int)node.data[i]);
+        }
+        fprintf(stderr, "\n");
+}
+
+void
+print_hex(const void *data, int length)
+{
+        int i;
+        for (i = 0; i < length; i++) {
+                fprintf(stderr, "%02X ", ((unsigned char *)data)[i]);
+        }
+        fprintf(stderr, "\n");
+}
+
+uint64_t
+read_host64(void *ptr)
+{
+        uint64_t data;
+
+        memcpy(&data, ptr, sizeof(data));
+
+        return data;
+}
+
+uint32_t
+read_be32(void *ptr)
+{
+        uint32_t data;
+
+        memcpy(&data, ptr, sizeof(data));
+
+        return ntohl(data);
+}
+
+uint16_t
+read_be16(void *ptr)
+{
+        uint16_t data;
+
+        memcpy(&data, ptr, sizeof(data));
+
+        return ntohs(data);
+}
+