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/*
WhatsAppWeb plugin for Miranda NG
Copyright © 2019-22 George Hazan
*/
#define DICT_VERSION 2
#define LIST_EMPTY 0
#define STREAM_END 2
#define DICTIONARY_0 236
#define DICTIONARY_1 237
#define DICTIONARY_2 238
#define DICTIONARY_3 239
#define AD_JID 247
#define LIST_8 248
#define LIST_16 249
#define JID_PAIR 250
#define HEX_8 251
#define BINARY_8 252
#define BINARY_20 253
#define BINARY_32 254
#define NIBBLE_8 255
class WANode // kinda XML
{
friend class WAReader;
friend class WAWriter;
WANode *pParent = nullptr;
OBJLIST<struct Attr> attrs;
OBJLIST<WANode> children;
public:
WANode();
WANode(const char *pszTitle);
~WANode();
void addAttr(const char *pszName, const char *pszValue);
void addAttr(const char *pszName, int iValue);
const char* getAttr(const char *pszName) const;
CMStringA getBody() const;
WANode* addChild(const char *pszName);
WANode* getChild(const char *pszName) const;
WANode* getFirstChild(void) const;
void print(CMStringA &dest, int level = 0) const;
CMStringA title;
MBinBuffer content;
};
__forceinline WANode& operator<<(WANode &node, const CHAR_PARAM ¶m)
{
node.addAttr(param.szName, param.szValue);
return node;
}
class WAReader
{
const BYTE *m_buf, *m_limit;
uint32_t readIntN(int i);
CMStringA readStringFromChars(int size);
bool readAttributes(WANode *node, int count);
uint32_t readInt20();
bool readList(WANode *pParent, int tag);
int readListSize(int tag);
CMStringA readPacked(int tag);
CMStringA readString(int tag);
public:
WAReader(const void *buf, size_t cbLen) :
m_buf((BYTE*)buf),
m_limit((BYTE*)buf + cbLen)
{}
WANode* readNode();
__forceinline uint32_t readInt8() { return readIntN(1); }
__forceinline uint32_t readInt16() { return readIntN(2); }
__forceinline uint32_t readInt32() { return readIntN(4); }
};
class WAWriter
{
__forceinline void writeInt8(int value) { writeIntN(value, 1); }
__forceinline void writeInt16(int value) { writeIntN(value, 2); }
__forceinline void writeInt32(int value) { writeIntN(value, 4); }
void writeByte(uint8_t b);
void writeIntN(int value, int i);
void writeInt20(int value);
void writeLength(int value);
void writeListSize(int tag);
void writePacked(const CMStringA &str, int tag);
void writeString(const char *str);
bool writeToken(const char *str);
public:
void writeNode(const WANode *pNode);
MBinBuffer body;
};
/////////////////////////////////////////////////////////////////////////////////////////
struct WAJid
{
int device, agent;
CMStringA user, server;
WAJid(const char *pszJid);
WAJid(const char *pszUser, const char *pszServer, int device = 0, int agent = 0);
CMStringA toString() const;
};
/////////////////////////////////////////////////////////////////////////////////////////
std::string encodeBigEndian(uint32_t num, size_t len = sizeof(uint32_t));
void generateIV(uint8_t *iv, int &pVar);
unsigned char* HKDF(const EVP_MD *evp_md,
const unsigned char *salt, size_t salt_len,
const unsigned char *key, size_t key_len,
const unsigned char *info, size_t info_len,
unsigned char *okm, size_t okm_len);
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