From 3baeb11a8fbcfcdbc31976d421f17b85503b3ecd Mon Sep 17 00:00:00 2001
From: WuKong <rebirthmonkey@gmail.com>
Date: Fri, 4 Sep 2015 09:25:34 +0200
Subject: init attribute-based encryption

Change-Id: Iba1a3d722110abf747a0fba366f3ebc911d25b25
---
 moon-abe/pbc-0.5.14/misc/utils.c | 101 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 moon-abe/pbc-0.5.14/misc/utils.c

(limited to 'moon-abe/pbc-0.5.14/misc/utils.c')

diff --git a/moon-abe/pbc-0.5.14/misc/utils.c b/moon-abe/pbc-0.5.14/misc/utils.c
new file mode 100644
index 00000000..1a808256
--- /dev/null
+++ b/moon-abe/pbc-0.5.14/misc/utils.c
@@ -0,0 +1,101 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h> // for intptr_t
+#include <gmp.h>
+
+#include "pbc_utils.h"
+#include "pbc_field.h"
+
+static int pbc_msg_to_stderr = 1;
+
+int pbc_set_msg_to_stderr(int i) {
+  return pbc_msg_to_stderr = i;
+}
+
+static int out(const char *format, ...) {
+  if (!pbc_msg_to_stderr) return 0;
+  va_list params;
+
+  va_start(params, format);
+  int res = vfprintf(stderr, format, params);
+  va_end(params);
+  return res;
+}
+
+static void print_warning(void) {
+  static int first = 1;
+  if (first) {
+    out("*** PBC asserts enabled: potential performance penalties ***\n");
+    first = 0;
+  }
+}
+
+void pbc_assert(int expr, char *msg, const char *func) {
+  print_warning();
+  if (!expr) {
+    out("PBC assert failed: %s(): %s\n", func, msg);
+    abort();
+  }
+}
+
+void pbc_assert_match2(element_ptr a, element_ptr b, const char *func) {
+  print_warning();
+  if (a->field != b->field) {
+    out("PBC assert failed: %s(): field mismatch\n", func);
+    abort();
+  }
+}
+
+void pbc_assert_match3(element_ptr a, element_ptr b, element_ptr c,
+    const char *func) {
+  print_warning();
+  if (a->field != b->field) {
+    out("PBC assert failed: %s(): first two args field mismatch\n", func);
+    abort();
+  }
+  if (b->field != c->field) {
+    out("PBC assert failed: %s(): last two args field mismatch\n", func);
+    abort();
+  }
+}
+
+// Print at most the first 1024 bytes of an error message.
+static void report(const char *prefix, const char *err, va_list params) {
+  char msg[1024];
+  element_vsnprintf(msg, sizeof(msg), err, params);
+  out("%s%s\n", prefix, msg);
+}
+
+void pbc_die(const char *err, ...) {
+  va_list params;
+
+  va_start(params, err);
+  report("fatal: ", err, params);
+  va_end(params);
+  exit(128);
+}
+
+void pbc_info(const char *err, ...) {
+  va_list params;
+
+  va_start(params, err);
+  report("", err, params);
+  va_end(params);
+}
+
+void pbc_warn(const char *err, ...) {
+  va_list params;
+
+  va_start(params, err);
+  report("warning: ", err, params);
+  va_end(params);
+}
+
+void pbc_error(const char *err, ...) {
+  va_list params;
+
+  va_start(params, err);
+  report("error: ", err, params);
+  va_end(params);
+}
-- 
cgit