1 files changed, 38 insertions, 3 deletions
diff --git a/src/utilstrencodings.h b/src/utilstrencodings.h
index b0edd8b542..ce93e83497 100644
--- a/src/utilstrencodings.h
+++ b/src/utilstrencodings.h
@@ -22,7 +22,21 @@
 /** This is needed because the foreach macro can't get over the comma in pair<t1, t2> */
 #define PAIRTYPE(t1, t2)    std::pair<t1, t2>
 
-std::string SanitizeString(const std::string& str);
+/** Used by SanitizeString() */
+enum SafeChars
+{
+    SAFE_CHARS_DEFAULT, //!< The full set of allowed chars
+    SAFE_CHARS_UA_COMMENT //!< BIP-0014 subset
+};
+
+/**
+* Remove unsafe chars. Safe chars chosen to allow simple messages/URLs/email
+* addresses, but avoid anything even possibly remotely dangerous like & or >
+* @param[in] str    The string to sanitize
+* @param[in] rule   The set of safe chars to choose (default: least restrictive)
+* @return           A new string without unsafe chars
+*/
+std::string SanitizeString(const std::string& str, int rule = SAFE_CHARS_DEFAULT);
 std::vector<unsigned char> ParseHex(const char* psz);
 std::vector<unsigned char> ParseHex(const std::string& str);
 signed char HexDigit(char c);
@@ -49,6 +63,20 @@ int atoi(const std::string& str);
  */
 bool ParseInt32(const std::string& str, int32_t *out);
 
+/**
+ * Convert string to signed 64-bit integer with strict parse error feedback.
+ * @returns true if the entire string could be parsed as valid integer,
+ *   false if not the entire string could be parsed or when overflow or underflow occurred.
+ */
+bool ParseInt64(const std::string& str, int64_t *out);
+
+/**
+ * Convert string to double with strict parse error feedback.
+ * @returns true if the entire string could be parsed as valid double,
+ *   false if not the entire string could be parsed or when overflow or underflow occurred.
+ */
+bool ParseDouble(const std::string& str, double *out);
+
 template<typename T>
 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
 {
@@ -74,11 +102,11 @@ inline std::string HexStr(const T& vch, bool fSpaces=false)
     return HexStr(vch.begin(), vch.end(), fSpaces);
 }
 
-/** 
+/**
  * Format a paragraph of text to a fixed width, adding spaces for
  * indentation to any added line.
  */
-std::string FormatParagraph(const std::string in, size_t width=79, size_t indent=0);
+std::string FormatParagraph(const std::string& in, size_t width = 79, size_t indent = 0);
 
 /**
  * Timing-attack-resistant comparison.
@@ -95,4 +123,11 @@ bool TimingResistantEqual(const T& a, const T& b)
     return accumulator == 0;
 }
 
+/** Parse number as fixed point according to JSON number syntax.
+ * See http://json.org/number.gif
+ * @returns true on success, false on error.
+ * @note The result must be in the range (-10^18,10^18), otherwise an overflow error will trigger.
+ */
+bool ParseFixedPoint(const std::string &val, int decimals, int64_t *amount_out);
+
 #endif // BITCOIN_UTILSTRENCODINGS_H