static gchar * gen_context(PurpleXfer *xfer, const char *file_name, const char *file_path) { gsize size = 0; MsnFileContext *header; gchar *u8 = NULL; gchar *ret; gunichar2 *uni = NULL; glong currentChar = 0; glong len = 0; const char *preview; gsize preview_len; size = purple_xfer_get_size(xfer); purple_xfer_prepare_thumbnail(xfer, "png"); if (!file_name) { gchar *basename = g_path_get_basename(file_path); u8 = purple_utf8_try_convert(basename); g_free(basename); file_name = u8; } uni = g_utf8_to_utf16(file_name, -1, NULL, &len, NULL); if (u8) { g_free(u8); file_name = NULL; u8 = NULL; } preview = purple_xfer_get_thumbnail(xfer, &preview_len); header = g_malloc(sizeof(MsnFileContext) + preview_len); header->length = GUINT32_TO_LE(sizeof(MsnFileContext) - 1); header->version = GUINT32_TO_LE(2); /* V.3 contains additional unnecessary data */ header->file_size = GUINT64_TO_LE(size); if (preview) header->type = GUINT32_TO_LE(0); else header->type = GUINT32_TO_LE(1); len = MIN(len, MAX_FILE_NAME_LEN); for (currentChar = 0; currentChar < len; currentChar++) { header->file_name[currentChar] = GUINT16_TO_LE(uni[currentChar]); } memset(&header->file_name[currentChar], 0x00, (MAX_FILE_NAME_LEN - currentChar) * 2); memset(&header->unknown1, 0, sizeof(header->unknown1)); header->unknown2 = GUINT32_TO_LE(0xffffffff); if (preview) { memcpy(&header->preview, preview, preview_len); } header->preview[preview_len] = '\0'; g_free(uni); ret = purple_base64_encode((const guchar *)header, sizeof(MsnFileContext) + preview_len); g_free(header); return ret; }
static gchar * gen_context(PurpleXfer *xfer, const char *file_name, const char *file_path) { goffset size = 0; MsnFileContext context; gchar *u8 = NULL; gchar *ret; gunichar2 *uni = NULL; glong currentChar = 0; glong len = 0; const char *preview; gsize preview_len; size = purple_xfer_get_size(xfer); purple_xfer_prepare_thumbnail(xfer, "png"); if (!file_name) { gchar *basename = g_path_get_basename(file_path); u8 = purple_utf8_try_convert(basename); g_free(basename); file_name = u8; } uni = g_utf8_to_utf16(file_name, -1, NULL, &len, NULL); if (u8) { g_free(u8); file_name = NULL; u8 = NULL; } preview = purple_xfer_get_thumbnail(xfer, &preview_len); context.length = MSN_FILE_CONTEXT_SIZE_V2; context.version = 2; /* V.3 contains additional unnecessary data */ context.file_size = size; if (preview) context.type = 0; else context.type = 1; len = MIN(len, MAX_FILE_NAME_LEN); for (currentChar = 0; currentChar < len; currentChar++) { context.file_name[currentChar] = GUINT16_TO_LE(uni[currentChar]); } memset(&context.file_name[currentChar], 0x00, (MAX_FILE_NAME_LEN - currentChar) * 2); #if 0 memset(&context.unknown1, 0, sizeof(context.unknown1)); context.unknown2 = 0xffffffff; #endif /* Mind the cast, as in, don't free it after! */ context.preview = (char *)preview; context.preview_len = preview_len; u8 = msn_file_context_to_wire(&context); ret = purple_base64_encode((const guchar *)u8, MSN_FILE_CONTEXT_SIZE_V2 + preview_len); g_free(uni); g_free(u8); return ret; }