Merge pull request #1178 from frostasm/implement-resolving-for-references-placeholders

Implement search for reference placeholder based on fields other than ID

src/core/Database.cpp

@@ -95,10 +95,15 @@ const Metadata* Database::metadata() const
 
 Entry* Database::resolveEntry(const Uuid& uuid)
 {
-    return recFindEntry(uuid, m_rootGroup);
+    return findEntryRecursive(uuid, m_rootGroup);
 }
 
-Entry* Database::recFindEntry(const Uuid& uuid, Group* group)
+Entry* Database::resolveEntry(const QString& text, EntryReferenceType referenceType)
+{
+    return findEntryRecursive(text, referenceType, m_rootGroup);
+}
+
+Entry* Database::findEntryRecursive(const Uuid& uuid, Group* group)
 {
     const QList<Entry*> entryList = group->entries();
     for (Entry* entry : entryList) {
@@ -109,7 +114,57 @@ Entry* Database::recFindEntry(const Uuid& uuid, Group* group)
 
     const QList<Group*> children = group->children();
     for (Group* child : children) {
-        Entry* result = recFindEntry(uuid, child);
+        Entry* result = findEntryRecursive(uuid, child);
+        if (result) {
+            return result;
+        }
+    }
+
+    return nullptr;
+}
+
+Entry* Database::findEntryRecursive(const QString& text, EntryReferenceType referenceType, Group* group)
+{
+    Q_ASSERT_X(referenceType != EntryReferenceType::Unknown, "Database::findEntryRecursive",
+               "Can't search entry with \"referenceType\" parameter equal to \"Unknown\"");
+
+    bool found = false;
+    const QList<Entry*> entryList = group->entries();
+    for (Entry* entry : entryList) {
+        switch (referenceType) {
+        case EntryReferenceType::Unknown:
+            return nullptr;
+        case EntryReferenceType::Title:
+            found = entry->title() == text;
+            break;
+        case EntryReferenceType::UserName:
+            found = entry->username() == text;
+            break;
+        case EntryReferenceType::Password:
+            found = entry->password() == text;
+            break;
+        case EntryReferenceType::Url:
+            found = entry->url() == text;
+            break;
+        case EntryReferenceType::Notes:
+            found = entry->notes() == text;
+            break;
+        case EntryReferenceType::Uuid:
+            found = entry->uuid().toHex() == text;
+            break;
+        case EntryReferenceType::CustomAttributes:
+            found = entry->attributes()->containsValue(text);
+            break;
+        }
+
+        if (found) {
+            return entry;
+        }
+    }
+
+    const QList<Group*> children = group->children();
+    for (Group* child : children) {
+        Entry* result = findEntryRecursive(text, referenceType, child);
         if (result) {
             return result;
         }
@@ -120,10 +175,10 @@ Entry* Database::recFindEntry(const Uuid& uuid, Group* group)
 
 Group* Database::resolveGroup(const Uuid& uuid)
 {
-    return recFindGroup(uuid, m_rootGroup);
+    return findGroupRecursive(uuid, m_rootGroup);
 }
 
-Group* Database::recFindGroup(const Uuid& uuid, Group* group)
+Group* Database::findGroupRecursive(const Uuid& uuid, Group* group)
 {
     if (group->uuid() == uuid) {
         return group;
@@ -131,7 +186,7 @@ Group* Database::recFindGroup(const Uuid& uuid, Group* group)
 
     const QList<Group*> children = group->children();
     for (Group* child : children) {
-        Group* result = recFindGroup(uuid, child);
+        Group* result = findGroupRecursive(uuid, child);
         if (result) {
             return result;
         }

src/core/Database.h

@@ -27,6 +27,7 @@
 #include "keys/CompositeKey.h"
 
 class Entry;
+enum class EntryReferenceType;
 class Group;
 class Metadata;
 class QTimer;
@@ -81,6 +82,7 @@ public:
     Metadata* metadata();
     const Metadata* metadata() const;
     Entry* resolveEntry(const Uuid& uuid);
+    Entry* resolveEntry(const QString& text, EntryReferenceType referenceType);
     Group* resolveGroup(const Uuid& uuid);
     QList<DeletedObject> deletedObjects();
     void addDeletedObject(const DeletedObject& delObj);
@@ -141,8 +143,9 @@ private slots:
     void startModifiedTimer();
 
 private:
-    Entry* recFindEntry(const Uuid& uuid, Group* group);
-    Group* recFindGroup(const Uuid& uuid, Group* group);
+    Entry* findEntryRecursive(const Uuid& uuid, Group* group);
+    Entry* findEntryRecursive(const QString& text, EntryReferenceType referenceType, Group* group);
+    Group* findGroupRecursive(const Uuid& uuid, Group* group);
 
     void createRecycleBin();
 

src/core/Entry.cpp

@@ -92,6 +92,29 @@ void Entry::setUpdateTimeinfo(bool value)
     m_updateTimeinfo = value;
 }
 
+EntryReferenceType Entry::referenceType(const QString& referenceStr)
+{
+    const QString referenceLowerStr = referenceStr.toLower();
+    EntryReferenceType result = EntryReferenceType::Unknown;
+    if (referenceLowerStr == QLatin1String("t")) {
+        result = EntryReferenceType::Title;
+    } else if (referenceLowerStr == QLatin1String("u")) {
+        result = EntryReferenceType::UserName;
+    } else if (referenceLowerStr == QLatin1String("p")) {
+        result = EntryReferenceType::Password;
+    } else if (referenceLowerStr == QLatin1String("a")) {
+        result = EntryReferenceType::Url;
+    } else if (referenceLowerStr == QLatin1String("n")) {
+        result = EntryReferenceType::Notes;
+    } else if (referenceLowerStr == QLatin1String("i")) {
+        result = EntryReferenceType::Uuid;
+    } else if (referenceLowerStr == QLatin1String("o")) {
+        result = EntryReferenceType::CustomAttributes;
+    }
+
+    return result;
+}
+
 Uuid Entry::uuid() const
 {
     return m_uuid;
@@ -699,7 +722,7 @@ void Entry::updateModifiedSinceBegin()
     m_modifiedSinceBegin = true;
 }
 
-QString Entry::resolveMultiplePlaceholdersRecursive(const QString &str, int maxDepth) const
+QString Entry::resolveMultiplePlaceholdersRecursive(const QString& str, int maxDepth) const
 {
     if (maxDepth <= 0) {
         qWarning("Maximum depth of replacement has been reached. Entry uuid: %s", qPrintable(uuid().toHex()));
@@ -723,15 +746,12 @@ QString Entry::resolveMultiplePlaceholdersRecursive(const QString &str, int maxD
     return result;
 }
 
-QString Entry::resolvePlaceholderRecursive(const QString &placeholder, int maxDepth) const
+QString Entry::resolvePlaceholderRecursive(const QString& placeholder, int maxDepth) const
 {
     const PlaceholderType typeOfPlaceholder = placeholderType(placeholder);
     switch (typeOfPlaceholder) {
     case PlaceholderType::NotPlaceholder:
-        return placeholder;
     case PlaceholderType::Unknown:
-        qWarning("Can't resolve placeholder %s for entry with uuid %s", qPrintable(placeholder),
-                 qPrintable(uuid().toHex()));
         return placeholder;
     case PlaceholderType::Title:
         return title();
@@ -762,45 +782,64 @@ QString Entry::resolvePlaceholderRecursive(const QString &placeholder, int maxDe
         const QString key = placeholder.mid(3, placeholder.length() - 4); // {S:attr} => mid(3, len - 4)
         return attributes()->hasKey(key) ? attributes()->value(key) : QString();
     }
-    case PlaceholderType::Reference: {
-        // resolving references in format: {REF:<WantedField>@I:<uuid of referenced entry>}
-        // using format from http://keepass.info/help/base/fieldrefs.html at the time of writing,
-        // but supporting lookups of standard fields and references by UUID only
-
-        QString result;
-        QRegExp* referenceRegExp = m_attributes->referenceRegExp();
-        if (referenceRegExp->indexIn(placeholder) != -1) {
-            constexpr int wantedFieldIndex = 1;
-            constexpr int referencedUuidIndex = 2;
-            const Uuid referencedUuid(QByteArray::fromHex(referenceRegExp->cap(referencedUuidIndex).toLatin1()));
-            const Entry* refEntry = m_group->database()->resolveEntry(referencedUuid);
-            if (refEntry) {
-                const QString wantedField = referenceRegExp->cap(wantedFieldIndex).toLower();
-                if (wantedField == "t") {
-                    result = refEntry->title();
-                } else if (wantedField == "u") {
-                    result = refEntry->username();
-                } else if (wantedField == "p") {
-                    result = refEntry->password();
-                } else if (wantedField == "a") {
-                    result = refEntry->url();
-                } else if (wantedField == "n") {
-                    result = refEntry->notes();
-                }
-
-                // Referencing fields of other entries only works with standard fields, not with custom user strings.
-                // If you want to reference a custom user string, you need to place a redirection in a standard field
-                // of the entry with the custom string, using {S:<Name>}, and reference the standard field.
-                result = refEntry->resolveMultiplePlaceholdersRecursive(result, maxDepth - 1);
-            }
-        }
-        return result;
-    }
+    case PlaceholderType::Reference:
+        return resolveReferencePlaceholderRecursive(placeholder, maxDepth);
     }
 
     return placeholder;
 }
 
+QString Entry::resolveReferencePlaceholderRecursive(const QString& placeholder, int maxDepth) const
+{
+    // resolving references in format: {REF:<WantedField>@<SearchIn>:<SearchText>}
+    // using format from http://keepass.info/help/base/fieldrefs.html at the time of writing
+
+    QRegularExpressionMatch match = EntryAttributes::matchReference(placeholder);
+    if (!match.hasMatch()) {
+        return placeholder;
+    }
+
+    QString result;
+    const QString searchIn = match.captured(EntryAttributes::SearchInGroupName);
+    const QString searchText = match.captured(EntryAttributes::SearchTextGroupName);
+
+    const EntryReferenceType searchInType = Entry::referenceType(searchIn);
+    const Entry* refEntry = m_group->database()->resolveEntry(searchText, searchInType);
+
+    if (refEntry) {
+        const QString wantedField = match.captured(EntryAttributes::WantedFieldGroupName);
+        result = refEntry->referenceFieldValue(Entry::referenceType(wantedField));
+
+        // Referencing fields of other entries only works with standard fields, not with custom user strings.
+        // If you want to reference a custom user string, you need to place a redirection in a standard field
+        // of the entry with the custom string, using {S:<Name>}, and reference the standard field.
+        result = refEntry->resolveMultiplePlaceholdersRecursive(result, maxDepth - 1);
+    }
+
+    return result;
+}
+
+QString Entry::referenceFieldValue(EntryReferenceType referenceType) const
+{
+    switch (referenceType) {
+    case EntryReferenceType::Title:
+        return title();
+    case EntryReferenceType::UserName:
+        return username();
+    case EntryReferenceType::Password:
+        return password();
+    case EntryReferenceType::Url:
+        return url();
+    case EntryReferenceType::Notes:
+        return notes();
+    case EntryReferenceType::Uuid:
+        return uuid().toHex();
+    default:
+        break;
+    }
+    return QString();
+}
+
 Group* Entry::group()
 {
     return m_group;
@@ -858,7 +897,7 @@ const Database* Entry::database() const
     }
 }
 
-QString Entry::maskPasswordPlaceholders(const QString &str) const
+QString Entry::maskPasswordPlaceholders(const QString& str) const
 {
     QString result = str;
     result.replace(QRegExp("(\\{PASSWORD\\})", Qt::CaseInsensitive, QRegExp::RegExp2), "******");
@@ -875,7 +914,7 @@ QString Entry::resolvePlaceholder(const QString& placeholder) const
     return resolvePlaceholderRecursive(placeholder, ResolveMaximumDepth);
 }
 
-QString Entry::resolveUrlPlaceholder(const QString &str, Entry::PlaceholderType placeholderType) const
+QString Entry::resolveUrlPlaceholder(const QString& str, Entry::PlaceholderType placeholderType) const
 {
     if (str.isEmpty())
         return QString();
@@ -911,7 +950,7 @@ QString Entry::resolveUrlPlaceholder(const QString &str, Entry::PlaceholderType
     return QString();
 }
 
-Entry::PlaceholderType Entry::placeholderType(const QString &placeholder) const
+Entry::PlaceholderType Entry::placeholderType(const QString& placeholder) const
 {
     if (!placeholder.startsWith(QLatin1Char('{')) || !placeholder.endsWith(QLatin1Char('}'))) {
         return PlaceholderType::NotPlaceholder;

src/core/Entry.h

@@ -36,6 +36,17 @@
 class Database;
 class Group;
 
+enum class EntryReferenceType {
+    Unknown,
+    Title,
+    UserName,
+    Password,
+    Url,
+    Notes,
+    Uuid,
+    CustomAttributes
+};
+
 struct EntryData
 {
     int iconNumber;
@@ -170,7 +181,7 @@ public:
     QString maskPasswordPlaceholders(const QString& str) const;
     QString resolveMultiplePlaceholders(const QString& str) const;
     QString resolvePlaceholder(const QString& str) const;
-    QString resolveUrlPlaceholder(const QString &str, PlaceholderType placeholderType) const;
+    QString resolveUrlPlaceholder(const QString& str, PlaceholderType placeholderType) const;
     PlaceholderType placeholderType(const QString& placeholder) const;
     QString resolveUrl(const QString& url) const;
 
@@ -203,6 +214,10 @@ private slots:
 private:
     QString resolveMultiplePlaceholdersRecursive(const QString& str, int maxDepth) const;
     QString resolvePlaceholderRecursive(const QString& placeholder, int maxDepth) const;
+    QString resolveReferencePlaceholderRecursive(const QString& placeholder, int maxDepth) const;
+    QString referenceFieldValue(EntryReferenceType referenceType) const;
+
+    static EntryReferenceType referenceType(const QString& referenceStr);
 
     const Database* database() const;
     template <class T> bool set(T& property, const T& value);

src/core/EntryAttachments.cpp

@@ -86,7 +86,7 @@ void EntryAttachments::remove(const QString& key)
     emit modified();
 }
 
-void EntryAttachments::remove(const QStringList &keys)
+void EntryAttachments::remove(const QStringList& keys)
 {
     if (keys.isEmpty()) {
         return;

src/core/EntryAttributes.cpp

@@ -25,11 +25,15 @@ const QString EntryAttributes::URLKey = "URL";
 const QString EntryAttributes::NotesKey = "Notes";
 const QStringList EntryAttributes::DefaultAttributes(QStringList() << TitleKey << UserNameKey
                                                      << PasswordKey << URLKey << NotesKey);
+
+const QString EntryAttributes::WantedFieldGroupName = "WantedField";
+const QString EntryAttributes::SearchInGroupName = "SearchIn";
+const QString EntryAttributes::SearchTextGroupName = "SearchText";
+
 const QString EntryAttributes::RememberCmdExecAttr = "_EXEC_CMD";
 
 EntryAttributes::EntryAttributes(QObject* parent)
     : QObject(parent)
-    , m_referenceRegExp("\\{REF:([TUPAN])@I:([^}]+)\\}", Qt::CaseInsensitive, QRegExp::RegExp2)
 {
     clear();
 }
@@ -61,11 +65,16 @@ QString EntryAttributes::value(const QString& key) const
     return m_attributes.value(key);
 }
 
-bool EntryAttributes::contains(const QString &key) const
+bool EntryAttributes::contains(const QString& key) const
 {
     return m_attributes.contains(key);
 }
 
+bool EntryAttributes::containsValue(const QString& value) const
+{
+    return m_attributes.values().contains(value);
+}
+
 bool EntryAttributes::isProtected(const QString& key) const
 {
     return m_protectedAttributes.contains(key);
@@ -78,16 +87,8 @@ bool EntryAttributes::isReference(const QString& key) const
         return false;
     }
 
-    QString data = value(key);
-    if (m_referenceRegExp.indexIn(data) != -1) {
-        return true;
-    }
-    return false;
-}
-
-QRegExp* EntryAttributes::referenceRegExp()
-{
-    return &m_referenceRegExp;
+    const QString data = value(key);
+    return matchReference(data).hasMatch();
 }
 
 void EntryAttributes::set(const QString& key, const QString& value, bool protect)
@@ -258,6 +259,15 @@ bool EntryAttributes::operator!=(const EntryAttributes& other) const
             || m_protectedAttributes != other.m_protectedAttributes);
 }
 
+QRegularExpressionMatch EntryAttributes::matchReference(const QString& text)
+{
+    static QRegularExpression referenceRegExp(
+                "\\{REF:(?<WantedField>[TUPANI])@(?<SearchIn>[TUPANIO]):(?<SearchText>[^}]+)\\}",
+                QRegularExpression::CaseInsensitiveOption);
+
+    return referenceRegExp.match(text);
+}
+
 void EntryAttributes::clear()
 {
     emit aboutToBeReset();

src/core/EntryAttributes.h

@@ -21,6 +21,7 @@
 
 #include <QMap>
 #include <QObject>
+#include <QRegularExpression>
 #include <QSet>
 #include <QStringList>
 
@@ -35,9 +36,9 @@ public:
     QList<QString> customKeys();
     QString value(const QString& key) const;
     bool contains(const QString& key) const;
+    bool containsValue(const QString& value) const;
     bool isProtected(const QString& key) const;
     bool isReference(const QString& key) const;
-    QRegExp* referenceRegExp();
     void set(const QString& key, const QString& value, bool protect = false);
     void remove(const QString& key);
     void rename(const QString& oldKey, const QString& newKey);
@@ -49,6 +50,8 @@ public:
     bool operator==(const EntryAttributes& other) const;
     bool operator!=(const EntryAttributes& other) const;
 
+    static QRegularExpressionMatch matchReference(const QString& text);
+
     static const QString TitleKey;
     static const QString UserNameKey;
     static const QString PasswordKey;
@@ -58,6 +61,10 @@ public:
     static const QString RememberCmdExecAttr;
     static bool isDefaultAttribute(const QString& key);
 
+    static const QString WantedFieldGroupName;
+    static const QString SearchInGroupName;
+    static const QString SearchTextGroupName;
+
 signals:
     void modified();
     void defaultKeyModified();
@@ -74,7 +81,6 @@ signals:
 private:
     QMap<QString, QString> m_attributes;
     QSet<QString> m_protectedAttributes;
-    QRegExp m_referenceRegExp;
 };
 
 #endif // KEEPASSX_ENTRYATTRIBUTES_H

tests/TestEntry.cpp

@@ -262,3 +262,155 @@ void TestEntry::testResolveRecursivePlaceholders()
     QCOMPARE(entry5->resolveMultiplePlaceholders(entry5->url()), url);
     QCOMPARE(entry5->resolveMultiplePlaceholders(entry5->title()), QString("title+/some/path+fragment+title"));
 }
+
+void TestEntry::testResolveReferencePlaceholders()
+{
+    Database db;
+    Group* root = db.rootGroup();
+
+    Entry* entry1 = new Entry();
+    entry1->setGroup(root);
+    entry1->setUuid(Uuid::random());
+    entry1->setTitle("Title1");
+    entry1->setUsername("Username1");
+    entry1->setPassword("Password1");
+    entry1->setUrl("Url1");
+    entry1->setNotes("Notes1");
+    entry1->attributes()->set("CustomAttribute1", "CustomAttributeValue1");
+
+    Group* group = new Group();
+    group->setParent(root);
+    Entry* entry2 = new Entry();
+    entry2->setGroup(group);
+    entry2->setUuid(Uuid::random());
+    entry2->setTitle("Title2");
+    entry2->setUsername("Username2");
+    entry2->setPassword("Password2");
+    entry2->setUrl("Url2");
+    entry2->setNotes("Notes2");
+    entry2->attributes()->set("CustomAttribute2", "CustomAttributeValue2");
+
+    Entry* entry3 = new Entry();
+    entry3->setGroup(group);
+    entry3->setUuid(Uuid::random());
+    entry3->setTitle("{S:AttributeTitle}");
+    entry3->setUsername("{S:AttributeUsername}");
+    entry3->setPassword("{S:AttributePassword}");
+    entry3->setUrl("{S:AttributeUrl}");
+    entry3->setNotes("{S:AttributeNotes}");
+    entry3->attributes()->set("AttributeTitle", "TitleValue");
+    entry3->attributes()->set("AttributeUsername", "UsernameValue");
+    entry3->attributes()->set("AttributePassword", "PasswordValue");
+    entry3->attributes()->set("AttributeUrl", "UrlValue");
+    entry3->attributes()->set("AttributeNotes", "NotesValue");
+
+    Entry* tstEntry = new Entry();
+    tstEntry->setGroup(root);
+    tstEntry->setUuid(Uuid::random());
+
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@I:%1}").arg(entry1->uuid().toHex())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@T:%1}").arg(entry1->title())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@U:%1}").arg(entry1->username())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@P:%1}").arg(entry1->password())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@A:%1}").arg(entry1->url())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@N:%1}").arg(entry1->notes())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@O:%1}").arg(entry1->attributes()->value("CustomAttribute1"))), entry1->title());
+
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@I:%1}").arg(entry1->uuid().toHex())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@T:%1}").arg(entry1->title())), entry1->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:U@U:%1}").arg(entry1->username())), entry1->username());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:P@P:%1}").arg(entry1->password())), entry1->password());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:A@A:%1}").arg(entry1->url())), entry1->url());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:N@N:%1}").arg(entry1->notes())), entry1->notes());
+
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@I:%1}").arg(entry2->uuid().toHex())), entry2->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@T:%1}").arg(entry2->title())), entry2->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@U:%1}").arg(entry2->username())), entry2->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@P:%1}").arg(entry2->password())), entry2->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@A:%1}").arg(entry2->url())), entry2->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@N:%1}").arg(entry2->notes())), entry2->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@O:%1}").arg(entry2->attributes()->value("CustomAttribute2"))), entry2->title());
+
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@T:%1}").arg(entry2->title())), entry2->title());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:U@U:%1}").arg(entry2->username())), entry2->username());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:P@P:%1}").arg(entry2->password())), entry2->password());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:A@A:%1}").arg(entry2->url())), entry2->url());
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:N@N:%1}").arg(entry2->notes())), entry2->notes());
+
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@I:%1}").arg(entry3->uuid().toHex())), entry3->attributes()->value("AttributeTitle"));
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:T@I:%1}").arg(entry3->uuid().toHex())), entry3->attributes()->value("AttributeTitle"));
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:U@I:%1}").arg(entry3->uuid().toHex())), entry3->attributes()->value("AttributeUsername"));
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:P@I:%1}").arg(entry3->uuid().toHex())), entry3->attributes()->value("AttributePassword"));
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:A@I:%1}").arg(entry3->uuid().toHex())), entry3->attributes()->value("AttributeUrl"));
+    QCOMPARE(tstEntry->resolveMultiplePlaceholders(QString("{REF:N@I:%1}").arg(entry3->uuid().toHex())), entry3->attributes()->value("AttributeNotes"));
+}
+
+void TestEntry::testResolveNonIdPlaceholdersToUuid()
+{
+    Database db;
+    auto* root = db.rootGroup();
+
+    Entry referencedEntryTitle;
+    referencedEntryTitle.setGroup(root);
+    referencedEntryTitle.setTitle("myTitle");
+    referencedEntryTitle.setUuid(Uuid::random());
+
+    Entry referencedEntryUsername;
+    referencedEntryUsername.setGroup(root);
+    referencedEntryUsername.setUsername("myUser");
+    referencedEntryUsername.setUuid(Uuid::random());
+
+    Entry referencedEntryPassword;
+    referencedEntryPassword.setGroup(root);
+    referencedEntryPassword.setPassword("myPassword");
+    referencedEntryPassword.setUuid(Uuid::random());
+
+    Entry referencedEntryUrl;
+    referencedEntryUrl.setGroup(root);
+    referencedEntryUrl.setUrl("myUrl");
+    referencedEntryUrl.setUuid(Uuid::random());
+
+    Entry referencedEntryNotes;
+    referencedEntryNotes.setGroup(root);
+    referencedEntryNotes.setNotes("myNotes");
+    referencedEntryNotes.setUuid(Uuid::random());
+
+    const QList<QChar> placeholders{'T', 'U', 'P', 'A', 'N'};
+    for (const QChar searchIn : placeholders) {
+        const Entry* referencedEntry = nullptr;
+        QString newEntryNotesRaw("{REF:I@%1:%2}");
+
+        switch(searchIn.toLatin1()) {
+            case 'T':
+                referencedEntry = &referencedEntryTitle;
+                newEntryNotesRaw = newEntryNotesRaw.arg(searchIn, referencedEntry->title());
+                break;
+            case 'U':
+                referencedEntry = &referencedEntryUsername;
+                newEntryNotesRaw = newEntryNotesRaw.arg(searchIn, referencedEntry->username());
+                break;
+            case 'P':
+                referencedEntry = &referencedEntryPassword;
+                newEntryNotesRaw = newEntryNotesRaw.arg(searchIn, referencedEntry->password());
+                break;
+            case 'A':
+                referencedEntry = &referencedEntryUrl;
+                newEntryNotesRaw = newEntryNotesRaw.arg(searchIn, referencedEntry->url());
+                break;
+            case 'N':
+                referencedEntry = &referencedEntryNotes;
+                newEntryNotesRaw = newEntryNotesRaw.arg(searchIn, referencedEntry->notes());
+                break;
+            default:
+                break;
+        }
+
+        Entry newEntry;
+        newEntry.setGroup(root);
+        newEntry.setNotes(newEntryNotesRaw);
+
+        const auto newEntryNotesResolved = 
+            newEntry.resolveMultiplePlaceholders(newEntry.notes());
+        QCOMPARE(newEntryNotesResolved, QString(referencedEntry->uuid().toHex()));
+    }
+}

tests/TestEntry.h

@@ -34,6 +34,8 @@ private slots:
     void testResolveUrl();
     void testResolveUrlPlaceholders();
     void testResolveRecursivePlaceholders();
+    void testResolveReferencePlaceholders();
+    void testResolveNonIdPlaceholdersToUuid();
 };
 
 #endif // KEEPASSX_TESTENTRY_H