Dep/CascLib: Update to ladislav-zezula/CascLib@37a948bdb5f493b6a0959489baa07e1636002c3b

1 files changed, 130 insertions, 0 deletions

diff --git a/dep/CascLib/src/common/Mime.h b/dep/CascLib/src/common/Mime.h
new file mode 100644
index 00000000000..01dc35fdac9
--- /dev/null
+++ b/dep/CascLib/src/common/Mime.h
@@ -0,0 +1,130 @@
+/*****************************************************************************/
+/* Mime.h                                 Copyright (c) Ladislav Zezula 2021 */
+/*---------------------------------------------------------------------------*/
+/* MIME parsing functions for CascLib                                        */
+/*---------------------------------------------------------------------------*/
+/*   Date    Ver   Who  Comment                                              */
+/* --------  ----  ---  -------                                              */
+/* 21.01.21  1.00  Lad  Created                                              */
+/*****************************************************************************/
+
+#ifndef __MIME_H__
+#define __MIME_H__
+
+//-----------------------------------------------------------------------------
+// MIME constants
+
+#define MAX_LENGTH_BOUNDARY 128
+
+enum CASC_MIME_ENCODING
+{
+    MimeEncodingTextPlain,
+    MimeEncodingBase64,
+    MimeEncodingQuotedPrintable,
+    MimeEncodingMax
+};
+
+//-----------------------------------------------------------------------------
+// Structure for caching parsed HTTP response information
+
+struct CASC_MIME_HTTP
+{
+    CASC_MIME_HTTP()
+    {
+        response_valid = content_length = content_offset = total_length = 0;
+    }
+
+    bool IsDataComplete(const char * response, size_t response_length);
+
+    size_t response_valid;              // Nonzero if this is an already parsed HTTP response
+    size_t content_length;              // Parsed value of "Content-Length"
+    size_t content_offset;              // Offset of the HTTP data, relative to the begin of the response
+    size_t total_length;                // Expected total length of the HTTP response (content_offset + content_size)
+};
+
+//-----------------------------------------------------------------------------
+// MIME blob class
+
+struct CASC_MIME_BLOB
+{
+    CASC_MIME_BLOB(char * mime_ptr, char * mime_end);
+    ~CASC_MIME_BLOB();
+
+    char * GetNextLine();
+
+    char * ptr;
+    char * end;
+};
+
+//-----------------------------------------------------------------------------
+// MIME class
+
+class CASC_MIME_ELEMENT
+{
+    public:
+
+    CASC_MIME_ELEMENT();
+    ~CASC_MIME_ELEMENT();
+
+    unsigned char * GiveAway(size_t * ptr_data_length);
+
+    DWORD Load(char * mime_data_begin, char * mime_data_end, const char * boundary_ptr = NULL);
+
+    CASC_MIME_ELEMENT * GetChild()  { return folder.pChild; }
+
+#ifdef _DEBUG
+    void Print(size_t nLevel, size_t nIndex);
+#endif
+
+    protected:
+
+    CASC_MIME_ELEMENT * AllocateAndLoadElement(char * a_mime_data, char * a_mime_data_end, const char * boundary_begin);
+    bool   ExtractEncoding(const char * line, CASC_MIME_ENCODING & Encoding);
+    bool   ExtractBoundary(const char * line);
+
+    DWORD DecodeTextPlain(char * content_begin, char * content_end, unsigned char * data_ptr, size_t * ptr_length);
+    DWORD DecodeQuotedPrintable(char * content_begin, char * content_end, unsigned char * data_ptr, size_t * ptr_length);
+    DWORD DecodeBase64(char * content_begin, char * content_end, unsigned char * data_ptr, size_t * ptr_length);
+
+    struct
+    {
+        CASC_MIME_ELEMENT * pChild;     // Pointer to the first child
+        CASC_MIME_ELEMENT * pNext;      // Pointer to the next-in-folder element
+    } folder;
+
+    struct
+    {
+        unsigned char * begin;
+        size_t length;
+    } data;
+
+    char boundary[MAX_LENGTH_BOUNDARY];
+};
+
+class CASC_MIME
+{
+    public:
+
+    CASC_MIME();
+    ~CASC_MIME();
+
+    unsigned char * GiveAway(size_t * ptr_data_length);
+
+    DWORD Load(char * data, size_t length);
+    DWORD Load(LPCTSTR fileName);
+
+#ifdef _DEBUG
+    void Print();
+#endif
+
+    protected:
+
+    CASC_MIME_ELEMENT root;
+};
+
+//-----------------------------------------------------------------------------
+// HTTP helpers
+
+bool IsHttpResponseComplete(CASC_MIME_HTTP & HttpInfo, const char * response, size_t response_length);
+
+#endif // __MIME_H__