1 files changed, 183 insertions, 0 deletions
diff --git a/chromium/third_party/webrtc/base/urlencode.cc b/chromium/third_party/webrtc/base/urlencode.cc
new file mode 100644
index 00000000000..b152829ae83
--- /dev/null
+++ b/chromium/third_party/webrtc/base/urlencode.cc
@@ -0,0 +1,183 @@
+/*
+ *  Copyright 2008 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/base/urlencode.h"
+
+#include "webrtc/base/common.h"
+#include "webrtc/base/stringutils.h"
+
+static int HexPairValue(const char * code) {
+  int value = 0;
+  const char * pch = code;
+  for (;;) {
+    int digit = *pch++;
+    if (digit >= '0' && digit <= '9') {
+      value += digit - '0';
+    }
+    else if (digit >= 'A' && digit <= 'F') {
+      value += digit - 'A' + 10;
+    }
+    else if (digit >= 'a' && digit <= 'f') {
+      value += digit - 'a' + 10;
+    }
+    else {
+      return -1;
+    }
+    if (pch == code + 2)
+      return value;
+    value <<= 4;
+  }
+}
+
+static int InternalUrlDecode(const char *source, char *dest,
+                             bool encode_space_as_plus) {
+  char * start = dest;
+
+  while (*source) {
+    switch (*source) {
+    case '+':
+      if (encode_space_as_plus) {
+        *(dest++) = ' ';
+      } else {
+        *dest++ = *source;
+      }
+      break;
+    case '%':
+      if (source[1] && source[2]) {
+        int value = HexPairValue(source + 1);
+        if (value >= 0) {
+          *(dest++) = value;
+          source += 2;
+        }
+        else {
+          *dest++ = '?';
+        }
+      }
+      else {
+        *dest++ = '?';
+      }
+      break;
+    default:
+      *dest++ = *source;
+    }
+    source++;
+  }
+
+  *dest = 0;
+  return static_cast<int>(dest - start);
+}
+
+static bool IsValidUrlChar(char ch, bool unsafe_only) {
+  if (unsafe_only) {
+    return !(ch <= ' ' || strchr("\\\"^&`<>[]{}", ch));
+  } else {
+    return isalnum(ch) || strchr("-_.!~*'()", ch);
+  }
+}
+
+namespace rtc {
+
+int UrlDecode(const char *source, char *dest) {
+  return InternalUrlDecode(source, dest, true);
+}
+
+int UrlDecodeWithoutEncodingSpaceAsPlus(const char *source, char *dest) {
+  return InternalUrlDecode(source, dest, false);
+}
+
+int InternalUrlEncode(const char *source, char *dest, unsigned int max,
+                      bool encode_space_as_plus, bool unsafe_only) {
+  static const char *digits = "0123456789ABCDEF";
+  if (max == 0) {
+    return 0;
+  }
+
+  char *start = dest;
+  while (static_cast<unsigned>(dest - start) < max && *source) {
+    unsigned char ch = static_cast<unsigned char>(*source);
+    if (*source == ' ' && encode_space_as_plus && !unsafe_only) {
+      *dest++ = '+';
+    } else if (IsValidUrlChar(ch, unsafe_only)) {
+      *dest++ = *source;
+    } else {
+      if (static_cast<unsigned>(dest - start) + 4 > max) {
+        break;
+      }
+      *dest++ = '%';
+      *dest++ = digits[(ch >> 4) & 0x0F];
+      *dest++ = digits[       ch & 0x0F];
+    }
+    source++;
+  }
+  ASSERT(static_cast<unsigned int>(dest - start) < max);
+  *dest = 0;
+
+  return static_cast<int>(dest - start);
+}
+
+int UrlEncode(const char *source, char *dest, unsigned max) {
+  return InternalUrlEncode(source, dest, max, true, false);
+}
+
+int UrlEncodeWithoutEncodingSpaceAsPlus(const char *source, char *dest,
+                                        unsigned max) {
+  return InternalUrlEncode(source, dest, max, false, false);
+}
+
+int UrlEncodeOnlyUnsafeChars(const char *source, char *dest, unsigned max) {
+  return InternalUrlEncode(source, dest, max, false, true);
+}
+
+std::string
+InternalUrlDecodeString(const std::string & encoded,
+                        bool encode_space_as_plus) {
+  size_t needed_length = encoded.length() + 1;
+  char* buf = STACK_ARRAY(char, needed_length);
+  InternalUrlDecode(encoded.c_str(), buf, encode_space_as_plus);
+  return buf;
+}
+
+std::string
+UrlDecodeString(const std::string & encoded) {
+  return InternalUrlDecodeString(encoded, true);
+}
+
+std::string
+UrlDecodeStringWithoutEncodingSpaceAsPlus(const std::string & encoded) {
+  return InternalUrlDecodeString(encoded, false);
+}
+
+std::string
+InternalUrlEncodeString(const std::string & decoded,
+                        bool encode_space_as_plus,
+                        bool unsafe_only) {
+  int needed_length = static_cast<int>(decoded.length()) * 3 + 1;
+  char* buf = STACK_ARRAY(char, needed_length);
+  InternalUrlEncode(decoded.c_str(), buf, needed_length,
+                    encode_space_as_plus, unsafe_only);
+  return buf;
+}
+
+std::string
+UrlEncodeString(const std::string & decoded) {
+  return InternalUrlEncodeString(decoded, true, false);
+}
+
+std::string
+UrlEncodeStringWithoutEncodingSpaceAsPlus(const std::string & decoded) {
+  return InternalUrlEncodeString(decoded, false, false);
+}
+
+std::string
+UrlEncodeStringForOnlyUnsafeChars(const std::string & decoded) {
+  return InternalUrlEncodeString(decoded, false, true);
+}
+
+}  // namespace rtc