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[Feature] Add Base64 paste decoding (Fixes #2317) #2477

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[Feature] Add Base64 paste decoding (Fixes #2317) #2477

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1 change: 1 addition & 0 deletions plugins/builtin/romfs/lang/en_US.json
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Original file line number Diff line number Diff line change
Expand Up @@ -872,6 +872,7 @@
"hex.builtin.view.hex_editor.menu.edit.paste.popup.button.selection": "Paste only over selection",
"hex.builtin.view.hex_editor.menu.edit.paste_all": "Paste all",
"hex.builtin.view.hex_editor.menu.edit.paste_all_string": "Paste all as string",
"hex.builtin.view.hex_editor.menu.edit.paste_all_decoded_base64_string": "Paste all as decoded base64 string",
"hex.builtin.view.hex_editor.menu.edit.remove": "Remove...",
"hex.builtin.view.hex_editor.menu.edit.resize": "Resize...",
"hex.builtin.view.hex_editor.menu.edit.select_all": "Select all",
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1 change: 1 addition & 0 deletions plugins/builtin/romfs/lang/fr_FR.json
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Original file line number Diff line number Diff line change
Expand Up @@ -834,6 +834,7 @@
"hex.builtin.view.hex_editor.menu.edit.paste.popup.button.selection": "Coller uniquement sur la sélection",
"hex.builtin.view.hex_editor.menu.edit.paste_all": "Coller tout",
"hex.builtin.view.hex_editor.menu.edit.paste_all_string": "Coller tout en tant que chaîne",
"hex.builtin.view.hex_editor.menu.edit.paste_all_decoded_base64_string":"Coller tout comme chaîne base64 décodée",
"hex.builtin.view.hex_editor.menu.edit.remove": "Supprimer...",
"hex.builtin.view.hex_editor.menu.edit.resize": "Redimensionner...",
"hex.builtin.view.hex_editor.menu.edit.select_all": "Sélectionner tout",
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1 change: 1 addition & 0 deletions plugins/builtin/romfs/lang/pl_PL.json
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Original file line number Diff line number Diff line change
Expand Up @@ -836,6 +836,7 @@
"hex.builtin.view.hex_editor.menu.edit.paste.popup.button.selection": "Wklej tylko nad zaznaczeniem",
"hex.builtin.view.hex_editor.menu.edit.paste_all": "Wklej wszystko",
"hex.builtin.view.hex_editor.menu.edit.paste_all_string": "Wklej wszystko jako string",
"hex.builtin.view.hex_editor.menu.edit.paste_all_decoded_base64_string": "Wklej wszystko jako zdekodowany ciąg base64",
"hex.builtin.view.hex_editor.menu.edit.remove": "Usuń...",
"hex.builtin.view.hex_editor.menu.edit.resize": "Zmień rozmiar...",
"hex.builtin.view.hex_editor.menu.edit.select_all": "Zaznacz wszystko",
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1 change: 1 addition & 0 deletions plugins/builtin/romfs/lang/uk_UA.json
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Original file line number Diff line number Diff line change
Expand Up @@ -825,6 +825,7 @@
"hex.builtin.view.hex_editor.menu.edit.paste.popup.button.selection": "Вставити тільки над виділеним фрагментом",
"hex.builtin.view.hex_editor.menu.edit.paste_all": "Вставити все",
"hex.builtin.view.hex_editor.menu.edit.paste_all_string": "Вставити все як рядок",
"hex.builtin.view.hex_editor.menu.edit.paste_all_decoded_base64_string": "Вставити все як декодований рядок base64",
"hex.builtin.view.hex_editor.menu.edit.remove": "Видалити...",
"hex.builtin.view.hex_editor.menu.edit.set_base": "Встановити початкову адресу...",
"hex.builtin.view.hex_editor.menu.edit.set_page_size": "Встановити кількість рядків...",
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1 change: 1 addition & 0 deletions plugins/builtin/romfs/lang/zh_CN.json
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Original file line number Diff line number Diff line change
Expand Up @@ -838,6 +838,7 @@
"hex.builtin.view.hex_editor.menu.edit.paste.popup.button.selection": "仅覆盖选区",
"hex.builtin.view.hex_editor.menu.edit.paste_all": "粘贴全部",
"hex.builtin.view.hex_editor.menu.edit.paste_all_string": "全部作为字符串粘贴",
"hex.builtin.view.hex_editor.menu.edit.paste_all_decoded_base64_string":"粘贴所有内容为解码后的Base64字符串",
"hex.builtin.view.hex_editor.menu.edit.remove": "删除……",
"hex.builtin.view.hex_editor.menu.edit.resize": "修改大小……",
"hex.builtin.view.hex_editor.menu.edit.select_all": "全选",
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67 changes: 65 additions & 2 deletions plugins/builtin/source/content/views/view_hex_editor.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -856,7 +856,53 @@ namespace hex::plugin::builtin {
ImGui::SetClipboardText(result.c_str());
}

static void pasteBytes(const Region &selection, bool selectionCheck, bool asPlainText) {
bool isValidBase64(const std::string &input) {
if (input.empty() || input.size() % 4 != 0)
{
log::info("Empty base64 string or check the padding: {}", input );
return false;
}
for (char c : input) {
if (!((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || c == '+' || c == '/' || c == '=' || c == '\n' || c == '\r'))
{
log::info("Invalid Base64 string: {}", input);
return false;
}
}
return true;
}

std::vector<u8> decodeBase64(const std::string &input) {

if(!isValidBase64(input)){
return {};
}

static constexpr char sDecodingTable[] ="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
std::vector<u8> output;
int val = 0, valb = -8;

for (char c : input) {
if (c == '=' || c == '\n' || c == '\r')
break;

const char *p = std::strchr(sDecodingTable, c);

if (!p)
continue;

val = (val << 6) + (p - sDecodingTable);
valb += 6;
if (valb >= 0) {
output.push_back(u8((val >> valb) & 0xFF));
valb -= 8;
}
}

return output;
}

static void pasteBytes(const Region &selection, bool selectionCheck, bool asPlainText, bool asBase64=false) {
auto provider = ImHexApi::Provider::get();
if (provider == nullptr)
return;
Expand All @@ -866,7 +912,10 @@ namespace hex::plugin::builtin {
return;

std::vector<u8> buffer;
if (asPlainText) {
if(asBase64){
buffer = decodeBase64(clipboard);
}
else if (asPlainText) {
// Directly reinterpret clipboard as an array of bytes
std::string cp = clipboard;
buffer = std::vector<u8>(cp.begin(), cp.end());
Expand Down Expand Up @@ -1550,6 +1599,20 @@ namespace hex::plugin::builtin {
ImHexApi::HexEditor::isSelectionValid,
this);

/* Paste... > Paste all as decoded base64 string */
ContentRegistry::UserInterface::addMenuItem({ "hex.builtin.menu.edit", "hex.builtin.view.hex_editor.menu.edit.paste_as", "hex.builtin.view.hex_editor.menu.edit.paste_all_decoded_base64_string" }, ICON_VS_BLANK, 1520,
Shortcut::None,
[] {
pasteBytes(
ImHexApi::HexEditor::getSelection().value_or(ImHexApi::HexEditor::ProviderRegion(Region { 0, 0 }, ImHexApi::Provider::get())),
false,
false,
true
);
},
ImHexApi::HexEditor::isSelectionValid,
this);

/* Select */
ContentRegistry::UserInterface::addMenuItem({ "hex.builtin.menu.edit", "hex.builtin.view.hex_editor.menu.edit.select" }, ICON_VS_LIST_SELECTION, 1525,
CTRLCMD + SHIFT + Keys::A,
Expand Down