a76af0ca2e
Move base64.h to the proper location and put redirect header into the old place to be able to switch downstream users on new location. Bug: webrtc:8366 Change-Id: I5191fe631d32178d2efd1315ca9abd4250102291 Reviewed-on: https://webrtc-review.googlesource.com/88223 Commit-Queue: Artem Titov <titovartem@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Andreassson <henrika@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24069}
124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
|
|
//*********************************************************************
|
|
//* C_Base64 - a simple base64 encoder and decoder.
|
|
//*
|
|
//* Copyright (c) 1999, Bob Withers - bwit@pobox.com
|
|
//*
|
|
//* This code may be freely used for any purpose, either personal
|
|
//* or commercial, provided the authors copyright notice remains
|
|
//* intact.
|
|
//*********************************************************************
|
|
|
|
#ifndef RTC_BASE_BASE64_H_
|
|
#define RTC_BASE_BASE64_H_
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace rtc {
|
|
|
|
class Base64 {
|
|
public:
|
|
enum DecodeOption {
|
|
DO_PARSE_STRICT = 1, // Parse only base64 characters
|
|
DO_PARSE_WHITE = 2, // Parse only base64 and whitespace characters
|
|
DO_PARSE_ANY = 3, // Parse all characters
|
|
DO_PARSE_MASK = 3,
|
|
|
|
DO_PAD_YES = 4, // Padding is required
|
|
DO_PAD_ANY = 8, // Padding is optional
|
|
DO_PAD_NO = 12, // Padding is disallowed
|
|
DO_PAD_MASK = 12,
|
|
|
|
DO_TERM_BUFFER = 16, // Must termiante at end of buffer
|
|
DO_TERM_CHAR = 32, // May terminate at any character boundary
|
|
DO_TERM_ANY = 48, // May terminate at a sub-character bit offset
|
|
DO_TERM_MASK = 48,
|
|
|
|
// Strictest interpretation
|
|
DO_STRICT = DO_PARSE_STRICT | DO_PAD_YES | DO_TERM_BUFFER,
|
|
|
|
DO_LAX = DO_PARSE_ANY | DO_PAD_ANY | DO_TERM_CHAR,
|
|
};
|
|
typedef int DecodeFlags;
|
|
|
|
static bool IsBase64Char(char ch);
|
|
|
|
// Get the char next to the |ch| from the Base64Table.
|
|
// If the |ch| is the last one in the Base64Table then returns
|
|
// the first one from the table.
|
|
// Expects the |ch| be a base64 char.
|
|
// The result will be saved in |next_ch|.
|
|
// Returns true on success.
|
|
static bool GetNextBase64Char(char ch, char* next_ch);
|
|
|
|
// Determines whether the given string consists entirely of valid base64
|
|
// encoded characters.
|
|
static bool IsBase64Encoded(const std::string& str);
|
|
|
|
static void EncodeFromArray(const void* data,
|
|
size_t len,
|
|
std::string* result);
|
|
static bool DecodeFromArray(const char* data,
|
|
size_t len,
|
|
DecodeFlags flags,
|
|
std::string* result,
|
|
size_t* data_used);
|
|
static bool DecodeFromArray(const char* data,
|
|
size_t len,
|
|
DecodeFlags flags,
|
|
std::vector<char>* result,
|
|
size_t* data_used);
|
|
static bool DecodeFromArray(const char* data,
|
|
size_t len,
|
|
DecodeFlags flags,
|
|
std::vector<uint8_t>* result,
|
|
size_t* data_used);
|
|
|
|
// Convenience Methods
|
|
static inline std::string Encode(const std::string& data) {
|
|
std::string result;
|
|
EncodeFromArray(data.data(), data.size(), &result);
|
|
return result;
|
|
}
|
|
static inline std::string Decode(const std::string& data, DecodeFlags flags) {
|
|
std::string result;
|
|
DecodeFromArray(data.data(), data.size(), flags, &result, nullptr);
|
|
return result;
|
|
}
|
|
static inline bool Decode(const std::string& data,
|
|
DecodeFlags flags,
|
|
std::string* result,
|
|
size_t* data_used) {
|
|
return DecodeFromArray(data.data(), data.size(), flags, result, data_used);
|
|
}
|
|
static inline bool Decode(const std::string& data,
|
|
DecodeFlags flags,
|
|
std::vector<char>* result,
|
|
size_t* data_used) {
|
|
return DecodeFromArray(data.data(), data.size(), flags, result, data_used);
|
|
}
|
|
|
|
private:
|
|
static const char Base64Table[];
|
|
static const unsigned char DecodeTable[];
|
|
|
|
static size_t GetNextQuantum(DecodeFlags parse_flags,
|
|
bool illegal_pads,
|
|
const char* data,
|
|
size_t len,
|
|
size_t* dpos,
|
|
unsigned char qbuf[4],
|
|
bool* padded);
|
|
template <typename T>
|
|
static bool DecodeFromArrayTemplate(const char* data,
|
|
size_t len,
|
|
DecodeFlags flags,
|
|
T* result,
|
|
size_t* data_used);
|
|
};
|
|
|
|
} // namespace rtc
|
|
|
|
#endif // RTC_BASE_BASE64_H_
|