[plasma/ksshaskpass] /: Handle when unknown host prompt has no period after the finger print

Git commit 70d4786168e02f7e12bf0b7d5e28fd303ab73037 by Kai Uwe Broulik.
Committed on 17/08/2026 at 14:09.
Pushed by broulik into branch 'master'.

Handle when unknown host prompt has no period after the finger print

I have seen this in the wild.

M  +17   -0    autotests/tst_prompt.cpp
M  +1    -1    src/prompt.cpp

https://invent.kde.org/plasma/ksshaskpass/-/commit/70d4786168e02f7e12bf0b7d5e28fd303ab73037

diff --git a/autotests/tst_prompt.cpp b/autotests/tst_prompt.cpp
index b14c8b3..ad394c2 100644
--- a/autotests/tst_prompt.cpp
+++ b/autotests/tst_prompt.cpp
@@ -129,6 +129,14 @@ void PromptTest::testPrompt_data()
                                          "Are you sure you want to continue connecting (yes/no/[fingerprint])? ")
                                   << QString() << DisplayType::UnknownSshHost << true;
 
+    QTest::newRow("unknown-host-period") << PromptType::Entry
+                                         << QStringLiteral(
+                                                "The authenticity of host 'invent.kde.org (1.2.3.4)' can't be established.\n"
+                                                "ED25519 key fingerprint is SHA256:1234567890abcdef\n"
+                                                "This key is not known by any other names.\n"
+                                                "Are you sure you want to continue connecting (yes/no/[fingerprint])? ")
+                                         << QString() << DisplayType::UnknownSshHost << true;
+
     QTest::newRow("unknown-host-other-name") << PromptType::Entry
                                              << QStringLiteral(
                                                     "The authenticity of host 'invent.kde.org (1.2.3.4)' can't be established.\n"
@@ -138,6 +146,15 @@ void PromptTest::testPrompt_data()
                                                     "Are you sure you want to continue connecting (yes/no/[fingerprint])? ")
                                              << QString() << DisplayType::UnknownSshHost << true;
 
+    QTest::newRow("unknown-host-other-name-period") << PromptType::Entry
+                                                    << QStringLiteral(
+                                                           "The authenticity of host 'invent.kde.org (1.2.3.4)' can't be established.\n"
+                                                           "ED25519 key fingerprint is SHA256:1234567890abcdef\n"
+                                                           "This host key is known by the following other names/addresses:\n"
+                                                           "    ~/.ssh/known_hosts:14: [hashed name]\n"
+                                                           "Are you sure you want to continue connecting (yes/no/[fingerprint])? ")
+                                                    << QString() << DisplayType::UnknownSshHost << true;
+
     QTest::newRow("unknown-host-colon") << PromptType::Entry
                                         << QStringLiteral(
                                                "The authenticity of host 'invent.kde.org (1.2.3.4)' can't be established.\n"
diff --git a/src/prompt.cpp b/src/prompt.cpp
index b78e817..e042cca 100644
--- a/src/prompt.cpp
+++ b/src/prompt.cpp
@@ -208,7 +208,7 @@ void parsePrompt(PromptType promptType, const QString &prompt, QString &identifi
 
     // Case: unknown SSH host
     match = QRegularExpression(QStringLiteral("^The authenticity of host '([^']+)(?: \\(([^)]+)\\))?' can't be established\\.\n"
-                                              "([A-Z0-9_-]+) key fingerprint is:? ([A-Za-z0-9:+/=]+)\\.\n"
+                                              "([A-Z0-9_-]+) key fingerprint is:? ([A-Za-z0-9:+/=]+)\\.?\n"
                                               "(?:.*\n)*"
                                               "Are you sure you want to continue connecting \\(yes/no/\\[fingerprint\\]\\)\\?\\s*$"))
                 .match(prompt);