/** * WinPR: Windows Portable Runtime * Clipboard Functions * * Copyright 2014 Marc-Andre Moreau * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include #include #include #include "clipboard.h" static const char* mime_bitmap[] = { "image/bmp", "image/x-bmp", "image/x-MS-bmp", "image/x-win-bitmap" }; #if defined(WINPR_UTILS_IMAGE_WEBP) static const char mime_webp[] = "image/webp"; #endif #if defined(WINPR_UTILS_IMAGE_PNG) static const char mime_png[] = "image/png"; #endif #if defined(WINPR_UTILS_IMAGE_JPEG) static const char mime_jpeg[] = "image/jpeg"; #endif /** * Standard Clipboard Formats: * http://msdn.microsoft.com/en-us/library/windows/desktop/ff729168/ */ /** * "CF_TEXT": * * Null-terminated ANSI text with CR/LF line endings. */ static void* clipboard_synthesize_cf_text(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { size_t size = 0; char* pDstData = NULL; if (formatId == CF_UNICODETEXT) { char* str = ConvertWCharNToUtf8Alloc(data, *pSize / sizeof(WCHAR), &size); if (!str) return NULL; pDstData = ConvertLineEndingToCRLF(str, &size); free(str); *pSize = size; return pDstData; } else if ((formatId == CF_TEXT) || (formatId == CF_OEMTEXT) || (formatId == ClipboardGetFormatId(clipboard, mime_text_plain))) { size = *pSize; pDstData = ConvertLineEndingToCRLF(data, &size); if (!pDstData) return NULL; *pSize = size; return pDstData; } return NULL; } /** * "CF_OEMTEXT": * * Null-terminated OEM text with CR/LF line endings. */ static void* clipboard_synthesize_cf_oemtext(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { return clipboard_synthesize_cf_text(clipboard, formatId, data, pSize); } /** * "CF_LOCALE": * * System locale identifier associated with CF_TEXT */ static void* clipboard_synthesize_cf_locale(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { UINT32* pDstData = NULL; pDstData = (UINT32*)malloc(sizeof(UINT32)); if (!pDstData) return NULL; *pDstData = 0x0409; /* English - United States */ return (void*)pDstData; } /** * "CF_UNICODETEXT": * * Null-terminated UTF-16 text with CR/LF line endings. */ static void* clipboard_synthesize_cf_unicodetext(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { size_t size = 0; char* crlfStr = NULL; WCHAR* pDstData = NULL; if ((formatId == CF_TEXT) || (formatId == CF_OEMTEXT) || (formatId == ClipboardGetFormatId(clipboard, mime_text_plain))) { size_t len = 0; if (!pSize || (*pSize > INT32_MAX)) return NULL; size = *pSize; crlfStr = ConvertLineEndingToCRLF((const char*)data, &size); if (!crlfStr) return NULL; pDstData = ConvertUtf8NToWCharAlloc(crlfStr, size, &len); free(crlfStr); if ((len < 1) || (len > UINT32_MAX / sizeof(WCHAR))) { free(pDstData); return NULL; } *pSize = (len + 1) * sizeof(WCHAR); } return (void*)pDstData; } /** * mime_utf8_string: * * Null-terminated UTF-8 string with LF line endings. */ static void* clipboard_synthesize_utf8_string(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { size_t size = 0; char* pDstData = NULL; if (formatId == CF_UNICODETEXT) { pDstData = ConvertWCharNToUtf8Alloc(data, *pSize / sizeof(WCHAR), &size); if (!pDstData) return NULL; size = ConvertLineEndingToLF(pDstData, size); *pSize = (UINT32)size; return pDstData; } else if ((formatId == CF_TEXT) || (formatId == CF_OEMTEXT) || (formatId == ClipboardGetFormatId(clipboard, mime_text_plain))) { int rc = 0; size = *pSize; pDstData = (char*)malloc(size); if (!pDstData) return NULL; CopyMemory(pDstData, data, size); rc = ConvertLineEndingToLF(pDstData, size); if (rc < 0) { free(pDstData); return NULL; } *pSize = (UINT32)rc; return pDstData; } return NULL; } static BOOL is_format_bitmap(wClipboard* clipboard, UINT32 formatId) { for (size_t x = 0; x < ARRAYSIZE(mime_bitmap); x++) { const char* mime = mime_bitmap[x]; const UINT32 altFormatId = ClipboardGetFormatId(clipboard, mime); if (altFormatId == formatId) return TRUE; } return FALSE; } /** * "CF_DIB": * * BITMAPINFO structure followed by the bitmap bits. */ static void* clipboard_synthesize_cf_dib(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { UINT32 SrcSize = 0; UINT32 DstSize = 0; BYTE* pDstData = NULL; SrcSize = *pSize; if (formatId == CF_DIBV5) { } else if (is_format_bitmap(clipboard, formatId)) { const BITMAPFILEHEADER* pFileHeader = NULL; if (SrcSize < (sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER))) return NULL; pFileHeader = (const BITMAPFILEHEADER*)data; if (pFileHeader->bfType != 0x4D42) return NULL; DstSize = SrcSize - sizeof(BITMAPFILEHEADER); pDstData = (BYTE*)malloc(DstSize); if (!pDstData) return NULL; data = (const void*)&((const BYTE*)data)[sizeof(BITMAPFILEHEADER)]; CopyMemory(pDstData, data, DstSize); *pSize = DstSize; return pDstData; } return NULL; } /** * "CF_DIBV5": * * BITMAPV5HEADER structure followed by the bitmap color space information and the bitmap bits. */ static void* clipboard_synthesize_cf_dibv5(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { if (formatId == CF_DIB) { } else if (is_format_bitmap(clipboard, formatId)) { } return NULL; } static void* clipboard_prepend_bmp_header(const BITMAPINFOHEADER* pInfoHeader, const void* data, size_t size, UINT32* pSize) { WINPR_ASSERT(pInfoHeader); WINPR_ASSERT(pSize); *pSize = 0; if ((pInfoHeader->biBitCount < 1) || (pInfoHeader->biBitCount > 32)) return NULL; const size_t DstSize = sizeof(BITMAPFILEHEADER) + size; BYTE* pDstData = (BYTE*)malloc(DstSize); if (!pDstData) return NULL; BITMAPFILEHEADER* pFileHeader = (BITMAPFILEHEADER*)pDstData; pFileHeader->bfType = 0x4D42; pFileHeader->bfSize = DstSize; pFileHeader->bfReserved1 = 0; pFileHeader->bfReserved2 = 0; pFileHeader->bfOffBits = sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER); unsigned char* pDst = &pDstData[sizeof(BITMAPFILEHEADER)]; CopyMemory(pDst, data, size); *pSize = DstSize; return pDstData; } /** * "image/bmp": * * Bitmap file format. */ static void* clipboard_synthesize_image_bmp(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { UINT32 SrcSize = *pSize; if (formatId == CF_DIB) { if (SrcSize < sizeof(BITMAPINFOHEADER)) return NULL; const BITMAPINFOHEADER* pInfoHeader = (const BITMAPINFOHEADER*)data; return clipboard_prepend_bmp_header(pInfoHeader, data, SrcSize, pSize); } else if (formatId == CF_DIBV5) { } return NULL; } static void* clipboard_synthesize_image_bmp_to_format(wClipboard* clipboard, UINT32 formatId, UINT32 bmpFormat, const void* data, UINT32* pSize) { WINPR_ASSERT(clipboard); WINPR_ASSERT(data); WINPR_ASSERT(pSize); size_t dsize = 0; void* result = NULL; wImage* img = winpr_image_new(); void* bmp = clipboard_synthesize_image_bmp(clipboard, formatId, data, pSize); const UINT32 SrcSize = *pSize; *pSize = 0; if (!bmp || !img) goto fail; if (winpr_image_read_buffer(img, bmp, SrcSize) <= 0) goto fail; result = winpr_image_write_buffer(img, bmpFormat, &dsize); if (result) *pSize = dsize; fail: free(bmp); winpr_image_free(img, TRUE); return result; } #if defined(WINPR_UTILS_IMAGE_PNG) static void* clipboard_synthesize_image_bmp_to_png(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { return clipboard_synthesize_image_bmp_to_format(clipboard, formatId, WINPR_IMAGE_PNG, data, pSize); } static void* clipboard_synthesize_image_format_to_bmp(wClipboard* clipboard, UINT32 srcFormatId, const void* data, UINT32* pSize) { WINPR_ASSERT(clipboard); WINPR_ASSERT(data); WINPR_ASSERT(pSize); void* dst = NULL; const UINT32 SrcSize = *pSize; size_t size = 0; wImage* image = winpr_image_new(); if (!image) goto fail; const int res = winpr_image_read_buffer(image, data, SrcSize); if (res <= 0) goto fail; dst = winpr_image_write_buffer(image, WINPR_IMAGE_BITMAP, &size); if ((size < sizeof(WINPR_BITMAP_FILE_HEADER)) || (size > UINT32_MAX)) { free(dst); dst = NULL; goto fail; } *pSize = (UINT32)size; fail: winpr_image_free(image, TRUE); if (dst) memmove(dst, &dst[sizeof(WINPR_BITMAP_FILE_HEADER)], size - sizeof(WINPR_BITMAP_FILE_HEADER)); return dst; } static void* clipboard_synthesize_image_png_to_bmp(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { return clipboard_synthesize_image_format_to_bmp(clipboard, formatId, data, pSize); } #endif #if defined(WINPR_UTILS_IMAGE_WEBP) static void* clipboard_synthesize_image_bmp_to_webp(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { return clipboard_synthesize_image_bmp_to_format(clipboard, formatId, WINPR_IMAGE_WEBP, data, pSize); } static void* clipboard_synthesize_image_webp_to_bmp(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { return clipboard_synthesize_image_format_to_bmp(clipboard, formatId, data, pSize); } #endif #if defined(WINPR_UTILS_IMAGE_JPEG) static void* clipboard_synthesize_image_bmp_to_jpeg(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { return clipboard_synthesize_image_bmp_to_format(clipboard, formatId, WINPR_IMAGE_JPEG, data, pSize); } static void* clipboard_synthesize_image_jpeg_to_bmp(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { return clipboard_synthesize_image_format_to_bmp(clipboard, formatId, data, pSize); } #endif /** * "HTML Format": * * HTML clipboard format: msdn.microsoft.com/en-us/library/windows/desktop/ms649015/ */ static void* clipboard_synthesize_html_format(wClipboard* clipboard, UINT32 formatId, const void* pData, UINT32* pSize) { union { const void* cpv; const char* cpc; const BYTE* cpb; WCHAR* pv; } pSrcData; char* pDstData = NULL; pSrcData.cpv = NULL; WINPR_ASSERT(clipboard); WINPR_ASSERT(pSize); if (formatId == ClipboardGetFormatId(clipboard, "text/html")) { const INT64 SrcSize = (INT64)*pSize; const size_t DstSize = SrcSize + 200; char* body = NULL; char num[20] = { 0 }; /* Create a copy, we modify the input data */ pSrcData.pv = calloc(1, SrcSize + 1); if (!pSrcData.pv) goto fail; memcpy(pSrcData.pv, pData, SrcSize); if (SrcSize > 2) { if (SrcSize > INT_MAX) goto fail; /* Check the BOM (Byte Order Mark) */ if ((pSrcData.cpb[0] == 0xFE) && (pSrcData.cpb[1] == 0xFF)) ByteSwapUnicode(pSrcData.pv, (SrcSize / 2)); /* Check if we have WCHAR, convert to UTF-8 */ if ((pSrcData.cpb[0] == 0xFF) && (pSrcData.cpb[1] == 0xFE)) { char* utfString = ConvertWCharNToUtf8Alloc(&pSrcData.pv[1], SrcSize / sizeof(WCHAR), NULL); free(pSrcData.pv); pSrcData.cpc = utfString; if (!utfString) goto fail; } } pDstData = (char*)calloc(1, DstSize); if (!pDstData) goto fail; sprintf_s(pDstData, DstSize, "Version:0.9\r\n" "StartHTML:0000000000\r\n" "EndHTML:0000000000\r\n" "StartFragment:0000000000\r\n" "EndFragment:0000000000\r\n"); body = strstr(pSrcData.cpc, "", pDstData, DstSize, NULL)) goto fail; } if (!winpr_str_append("", pDstData, DstSize, NULL)) goto fail; /* StartFragment */ sprintf_s(num, sizeof(num), "%010" PRIuz "", strnlen(pDstData, SrcSize + 200)); CopyMemory(&pDstData[69], num, 10); if (!winpr_str_append(pSrcData.cpc, pDstData, DstSize, NULL)) goto fail; /* EndFragment */ sprintf_s(num, sizeof(num), "%010" PRIuz "", strnlen(pDstData, SrcSize + 200)); CopyMemory(&pDstData[93], num, 10); if (!winpr_str_append("", pDstData, DstSize, NULL)) goto fail; if (!body) { if (!winpr_str_append("", pDstData, DstSize, NULL)) goto fail; } /* EndHTML */ sprintf_s(num, sizeof(num), "%010" PRIuz "", strnlen(pDstData, DstSize)); CopyMemory(&pDstData[43], num, 10); *pSize = (UINT32)strnlen(pDstData, DstSize) + 1; } fail: free(pSrcData.pv); return pDstData; } /** * "text/html": * * HTML text format. */ static void* clipboard_synthesize_text_html(wClipboard* clipboard, UINT32 formatId, const void* data, UINT32* pSize) { long beg = 0; long end = 0; const char* str = NULL; char* begStr = NULL; char* endStr = NULL; long DstSize = -1; BYTE* pDstData = NULL; if (formatId == ClipboardGetFormatId(clipboard, "HTML Format")) { INT64 SrcSize = 0; str = (const char*)data; SrcSize = (INT64)*pSize; begStr = strstr(str, "StartHTML:"); endStr = strstr(str, "EndHTML:"); if (!begStr || !endStr) return NULL; errno = 0; beg = strtol(&begStr[10], NULL, 10); if (errno != 0) return NULL; end = strtol(&endStr[8], NULL, 10); if (beg < 0 || end < 0 || (beg > SrcSize) || (end > SrcSize) || (beg >= end) || (errno != 0)) return NULL; DstSize = end - beg; pDstData = (BYTE*)malloc((size_t)(SrcSize - beg + 1)); if (!pDstData) return NULL; CopyMemory(pDstData, &str[beg], DstSize); DstSize = ConvertLineEndingToLF((char*)pDstData, DstSize); *pSize = (UINT32)DstSize; } return (void*)pDstData; } BOOL ClipboardInitSynthesizers(wClipboard* clipboard) { /** * CF_TEXT */ { ClipboardRegisterSynthesizer(clipboard, CF_TEXT, CF_OEMTEXT, clipboard_synthesize_cf_oemtext); ClipboardRegisterSynthesizer(clipboard, CF_TEXT, CF_UNICODETEXT, clipboard_synthesize_cf_unicodetext); ClipboardRegisterSynthesizer(clipboard, CF_TEXT, CF_LOCALE, clipboard_synthesize_cf_locale); UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime_text_plain); ClipboardRegisterSynthesizer(clipboard, CF_TEXT, altFormatId, clipboard_synthesize_utf8_string); } /** * CF_OEMTEXT */ { ClipboardRegisterSynthesizer(clipboard, CF_OEMTEXT, CF_TEXT, clipboard_synthesize_cf_text); ClipboardRegisterSynthesizer(clipboard, CF_OEMTEXT, CF_UNICODETEXT, clipboard_synthesize_cf_unicodetext); ClipboardRegisterSynthesizer(clipboard, CF_OEMTEXT, CF_LOCALE, clipboard_synthesize_cf_locale); UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime_text_plain); ClipboardRegisterSynthesizer(clipboard, CF_OEMTEXT, altFormatId, clipboard_synthesize_utf8_string); } /** * CF_UNICODETEXT */ { ClipboardRegisterSynthesizer(clipboard, CF_UNICODETEXT, CF_TEXT, clipboard_synthesize_cf_text); ClipboardRegisterSynthesizer(clipboard, CF_UNICODETEXT, CF_OEMTEXT, clipboard_synthesize_cf_oemtext); ClipboardRegisterSynthesizer(clipboard, CF_UNICODETEXT, CF_LOCALE, clipboard_synthesize_cf_locale); UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime_text_plain); ClipboardRegisterSynthesizer(clipboard, CF_UNICODETEXT, altFormatId, clipboard_synthesize_utf8_string); } /** * UTF8_STRING */ { UINT32 formatId = ClipboardRegisterFormat(clipboard, mime_text_plain); if (formatId) { ClipboardRegisterSynthesizer(clipboard, formatId, CF_TEXT, clipboard_synthesize_cf_text); ClipboardRegisterSynthesizer(clipboard, formatId, CF_OEMTEXT, clipboard_synthesize_cf_oemtext); ClipboardRegisterSynthesizer(clipboard, formatId, CF_UNICODETEXT, clipboard_synthesize_cf_unicodetext); ClipboardRegisterSynthesizer(clipboard, formatId, CF_LOCALE, clipboard_synthesize_cf_locale); } } /** * text/plain */ { UINT32 formatId = ClipboardRegisterFormat(clipboard, mime_text_plain); if (formatId) { ClipboardRegisterSynthesizer(clipboard, formatId, CF_TEXT, clipboard_synthesize_cf_text); ClipboardRegisterSynthesizer(clipboard, formatId, CF_OEMTEXT, clipboard_synthesize_cf_oemtext); ClipboardRegisterSynthesizer(clipboard, formatId, CF_UNICODETEXT, clipboard_synthesize_cf_unicodetext); ClipboardRegisterSynthesizer(clipboard, formatId, CF_LOCALE, clipboard_synthesize_cf_locale); } } /** * CF_DIB */ { ClipboardRegisterSynthesizer(clipboard, CF_DIB, CF_DIBV5, clipboard_synthesize_cf_dibv5); for (size_t x = 0; x < ARRAYSIZE(mime_bitmap); x++) { const char* mime = mime_bitmap[x]; const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime); if (altFormatId == 0) continue; ClipboardRegisterSynthesizer(clipboard, CF_DIB, altFormatId, clipboard_synthesize_image_bmp); } } /** * CF_DIBV5 */ if (0) { ClipboardRegisterSynthesizer(clipboard, CF_DIBV5, CF_DIB, clipboard_synthesize_cf_dib); for (size_t x = 0; x < ARRAYSIZE(mime_bitmap); x++) { const char* mime = mime_bitmap[x]; const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime); if (altFormatId == 0) continue; ClipboardRegisterSynthesizer(clipboard, CF_DIBV5, altFormatId, clipboard_synthesize_image_bmp); } } /** * image/bmp */ for (size_t x = 0; x < ARRAYSIZE(mime_bitmap); x++) { const char* mime = mime_bitmap[x]; const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime); if (altFormatId == 0) continue; ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIB, clipboard_synthesize_cf_dib); ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIBV5, clipboard_synthesize_cf_dibv5); } /** * image/png */ #if defined(WINPR_UTILS_IMAGE_PNG) { const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime_png); ClipboardRegisterSynthesizer(clipboard, CF_DIB, altFormatId, clipboard_synthesize_image_bmp_to_png); ClipboardRegisterSynthesizer(clipboard, CF_DIBV5, altFormatId, clipboard_synthesize_image_bmp_to_png); ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIB, clipboard_synthesize_image_png_to_bmp); ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIBV5, clipboard_synthesize_image_png_to_bmp); } #endif /** * image/webp */ #if defined(WINPR_UTILS_IMAGE_WEBP) { const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime_webp); ClipboardRegisterSynthesizer(clipboard, CF_DIB, altFormatId, clipboard_synthesize_image_bmp_to_webp); ClipboardRegisterSynthesizer(clipboard, CF_DIBV5, altFormatId, clipboard_synthesize_image_webp_to_bmp); ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIB, clipboard_synthesize_image_bmp_to_webp); ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIBV5, clipboard_synthesize_image_webp_to_bmp); } #endif /** * image/jpeg */ #if defined(WINPR_UTILS_IMAGE_JPEG) { const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, mime_jpeg); ClipboardRegisterSynthesizer(clipboard, CF_DIB, altFormatId, clipboard_synthesize_image_bmp_to_jpeg); ClipboardRegisterSynthesizer(clipboard, CF_DIBV5, altFormatId, clipboard_synthesize_image_jpeg_to_bmp); ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIB, clipboard_synthesize_image_bmp_to_jpeg); ClipboardRegisterSynthesizer(clipboard, altFormatId, CF_DIBV5, clipboard_synthesize_image_jpeg_to_bmp); } #endif /** * HTML Format */ { UINT32 formatId = ClipboardRegisterFormat(clipboard, "HTML Format"); if (formatId) { const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, "text/html"); ClipboardRegisterSynthesizer(clipboard, formatId, altFormatId, clipboard_synthesize_text_html); } } /** * text/html */ { UINT32 formatId = ClipboardRegisterFormat(clipboard, "text/html"); if (formatId) { const UINT32 altFormatId = ClipboardRegisterFormat(clipboard, "HTML Format"); ClipboardRegisterSynthesizer(clipboard, formatId, altFormatId, clipboard_synthesize_html_format); } } return TRUE; }