1 files changed, 90 insertions, 0 deletions
diff --git a/dom/media/webrtc/common/csf_common.h b/dom/media/webrtc/common/csf_common.h
new file mode 100644
index 0000000000..8b01047553
--- /dev/null
+++ b/dom/media/webrtc/common/csf_common.h
@@ -0,0 +1,90 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef _CSF_COMMON_E58E5677_950A_424c_B6C2_CA180092E6A2_H
+#define _CSF_COMMON_E58E5677_950A_424c_B6C2_CA180092E6A2_H
+
+#include <assert.h>
+#include <memory>
+#include <vector>
+#include <stdlib.h>
+
+/*
+
+This header file defines:
+
+csf_countof
+csf_sprintf
+csf_vsprintf
+
+*/
+
+/*
+  General security tip: Ensure that "format" is never a user-defined string.
+  Format should ALWAYS be something that's built into your code, not user
+  supplied. For example: never write:
+
+  csf_sprintf(buffer, csf_countof(buffer), pUserSuppliedString);
+
+  Instead write:
+
+  csf_sprintf(buffer, csf_countof(buffer), "%s", pUserSuppliedString);
+
+*/
+
+#ifdef WIN32
+#  if !defined(_countof)
+#    if !defined(__cplusplus)
+#      define _countof(_Array) (sizeof(_Array) / sizeof(_Array[0]))
+#    else
+extern "C++" {
+template <typename _CountofType, size_t _SizeOfArray>
+char (*_csf_countof_helper(_CountofType (&_Array)[_SizeOfArray]))[_SizeOfArray];
+#      define _countof(_Array) sizeof(*_csf_countof_helper(_Array))
+}
+#    endif
+#  endif
+#else
+#  define _countof(_Array) (sizeof(_Array) / sizeof(_Array[0]))
+#endif
+// csf_countof
+
+#define csf_countof(anArray) _countof(anArray)
+
+// csf_sprintf
+
+#ifdef _WIN32
+// Unlike snprintf, sprintf_s guarantees that the buffer will be null-terminated
+// (unless the buffer size is zero).
+#  define csf_sprintf(/* char* */ buffer,                                   \
+                      /* size_t */ sizeOfBufferInCharsInclNullTerm,         \
+                      /* const char * */ format, ...)                       \
+    _snprintf_s(buffer, sizeOfBufferInCharsInclNullTerm, _TRUNCATE, format, \
+                __VA_ARGS__)
+#else
+#  define csf_sprintf(/* char */ buffer,                                    \
+                      /* size_t */ sizeOfBufferInCharsInclNullTerm,         \
+                      /* const char * */ format, ...)                       \
+    snprintf(buffer, sizeOfBufferInCharsInclNullTerm, format, __VA_ARGS__); \
+    buffer[sizeOfBufferInCharsInclNullTerm - 1] = '\0'
+#endif
+
+// csf_vsprintf
+
+#ifdef _WIN32
+#  define csf_vsprintf(/* char* */ buffer,                                  \
+                       /* size_t */ sizeOfBufferInCharsInclNullTerm,        \
+                       /* const char * */ format, /* va_list */ vaList)     \
+    vsnprintf_s(buffer, sizeOfBufferInCharsInclNullTerm, _TRUNCATE, format, \
+                vaList);                                                    \
+    buffer[sizeOfBufferInCharsInclNullTerm - 1] = '\0'
+#else
+#  define csf_vsprintf(/* char */ buffer,                               \
+                       /* size_t */ sizeOfBufferInCharsInclNullTerm,    \
+                       /* const char * */ format, /* va_list */ vaList) \
+    vsprintf(buffer, format, vaList);                                   \
+    buffer[sizeOfBufferInCharsInclNullTerm - 1] = '\0'
+#endif
+
+#endif