1 files changed, 103 insertions, 0 deletions
diff --git a/src/common/android/testing/mkdtemp.h b/src/common/android/testing/mkdtemp.h
new file mode 100644
index 00000000..063e356f
--- /dev/null
+++ b/src/common/android/testing/mkdtemp.h
@@ -0,0 +1,103 @@
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Android doesn't provide mkdtemp(). Keep this implementation in an
+// C++ anonymous namespace to avoid conflicts on Chromium (which
+// already provides an extern "C" mkdtemp function).
+//
+// The reason this is inlined here is to avoid linking a new object file
+// into each unit test program (i.e. keep build files simple).
+
+#ifndef GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_MKDTEMP_H
+#define GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_MKDTEMP_H
+
+#include <assert.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+
+namespace {
+
+char* mkdtemp(char* path) {
+  if (path == NULL) {
+    errno = EINVAL;
+    return NULL;
+  }
+
+  // 'path' must be terminated with six 'X'
+  const char kSuffix[] = "XXXXXX";
+  const size_t kSuffixLen = strlen(kSuffix);
+  char* path_end = path + strlen(path);
+
+  if (path_end - path < kSuffixLen ||
+      memcmp(path_end - kSuffixLen, kSuffix, kSuffixLen) != 0) {
+    errno = EINVAL;
+    return NULL;
+  }
+
+  // If 'path' contains a directory separator, check that it exists to
+  // avoid looping later.
+  char* sep = strrchr(path, '/');
+  if (sep != NULL) {
+    struct stat st;
+    int ret;
+    *sep = '\0';  // temporarily zero-terminate the dirname.
+    ret = stat(path, &st);
+    *sep = '/';   // restore full path.
+    if (ret < 0)
+      return NULL;
+    if (!S_ISDIR(st.st_mode)) {
+      errno = ENOTDIR;
+      return NULL;
+    }
+  }
+
+  // Loop. On each iteration, replace the XXXXXX suffix with a random
+  // number.
+  int tries;
+  for (tries = 128; tries > 0; tries--) {
+    int random = rand() % 1000000;
+
+    snprintf(path_end - kSuffixLen, kSuffixLen + 1, "%0d", random);
+    if (mkdir(path, 0700) == 0)
+      return path;  // Success
+
+    if (errno != EEXIST)
+      return NULL;
+  }
+
+  assert(errno == EEXIST);
+  return NULL;
+}
+
+}  // namespace
+
+#endif  // GOOGLE_BREAKPAD_COMMON_ANDROID_TESTING_MKDTEMP_H