Greeter: Support setting environment variables

Includes a GreeterEnvironment configuration entry.
sddm · Apr 20, 2021 · 6398077 · 6398077
1 parent 34ecafa
commit 6398077
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Showing 2 changed files with 13 additions and 0 deletions.
diff --git a/src/common/Configuration.h b/src/common/Configuration.h
@@ -47,6 +47,7 @@ namespace SDDM {
                                                                                                    "NOTE: Currently ignored if autologin is enabled."));
         Entry(InputMethod,         QString,     QStringLiteral("qtvirtualkeyboard"),                   _S("Input method module"));
         Entry(Namespaces,          QStringList, QStringList(),                                  _S("Comma-separated list of Linux namespaces for user session to enter"));
+        Entry(GreeterEnvironment,  QStringList, QStringList(),                                  _S("Comma-separated list of environment variables to be set"));
         //  Name   Entries (but it's a regular class again)
         Section(Theme,
             Entry(ThemeDir,            QString,     _S(DATA_INSTALL_DIR "/themes"),             _S("Theme directory path"));

diff --git a/src/helper/HelperApp.cpp b/src/helper/HelperApp.cpp
@@ -20,6 +20,7 @@
 
 #include "HelperApp.h"
 #include "Backend.h"
+#include "Configuration.h"
 #include "UserSession.h"
 #include "SafeDataStream.h"
 
@@ -139,6 +140,17 @@ namespace SDDM {
         m_user = m_backend->userName();
         QProcessEnvironment env = authenticated(m_user);
 
+        if (env.value(QStringLiteral("XDG_SESSION_CLASS")) == QLatin1String("greeter")) {
+            for (const auto &entry : mainConfig.GreeterEnvironment.get()) {
+                const int index = entry.indexOf(QLatin1Char('='));
+                if (index < 0) {
+                    qWarning() << "Malformed environment variable" << entry;
+                    continue;
+                }
+                env.insert(entry.left(index), entry.mid(index + 1));
+            }
+        }
+
         if (!m_session->path().isEmpty()) {
             env.insert(m_session->processEnvironment());
             m_session->setProcessEnvironment(env);