ams_mitm: Implement system settings mitm

stratosphere/libstratosphere/source/boot2/boot2_api.cpp

@@ -176,8 +176,7 @@ namespace ams::boot2 {
             /* Contact set:sys, retrieve boot!force_maintenance. */
             {
                 u8 force_maintenance = 1;
-                u64 size_out;
-                setsysGetSettingsItemValue("boot", "force_maintenance", &force_maintenance, sizeof(force_maintenance), &size_out);
+                settings::fwdbg::GetSettingsItemValue(&force_maintenance, sizeof(force_maintenance), "boot", "force_maintenance");
                 if (force_maintenance != 0) {
                     return true;
                 }

stratosphere/libstratosphere/source/settings/settings_fwdbg_api.cpp

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2018-2019 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+
+namespace ams::settings::fwdbg {
+
+    /* TODO: Implement when libnx wrapper is added. */
+    bool IsDebugModeEnabled();
+
+    size_t WEAK GetSettingsItemValueSize(const char *name, const char *key) {
+        u64 size = 0;
+        R_ASSERT(setsysGetSettingsItemValueSize(name, key, &size));
+        return size;
+    }
+
+    size_t WEAK GetSettingsItemValue(void *dst, size_t dst_size, const char *name, const char *key) {
+        u64 size = 0;
+        R_ASSERT(setsysGetSettingsItemValue(name, key, dst, dst_size, &size));
+        return size;
+    }
+
+}

stratosphere/libstratosphere/source/sf/cmif/sf_cmif_service_dispatch.cpp

@@ -45,7 +45,7 @@ namespace ams::sf::cmif {
 
         /* Forward forwardable results, otherwise ensure we can send result to user. */
         R_TRY_CATCH(command_result) {
-            R_CATCH(sf::impl::ResultRequestContextChanged) { return R_CURRENT_RESULT; }
+            R_CATCH_RETHROW(sf::impl::ResultRequestContextChanged)
             R_CATCH_ALL() { AMS_ASSERT(out_header != nullptr); }
         } R_END_TRY_CATCH;
 
@@ -92,7 +92,7 @@ namespace ams::sf::cmif {
             R_CATCH(sm::mitm::ResultShouldForwardToSession) {
                 return ctx.session->ForwardRequest(ctx);
             }
-            R_CATCH(sf::impl::ResultRequestContextChanged) { return R_CURRENT_RESULT; }
+            R_CATCH_RETHROW(sf::impl::ResultRequestContextChanged)
             R_CATCH_ALL() { AMS_ASSERT(out_header != nullptr); }
         } R_END_TRY_CATCH;
 

stratosphere/libstratosphere/source/util/ini.h

@@ -102,7 +102,7 @@ int ini_parse_string(const char* string, ini_handler handler, void* user);
 /* Maximum line length for any line in INI file (stack or heap). Note that
    this must be 3 more than the longest line (due to '\r', '\n', and '\0'). */
 #ifndef INI_MAX_LINE
-#define INI_MAX_LINE 200
+#define INI_MAX_LINE 0x480
 #endif
 
 /* Nonzero to allow heap line buffer to grow via realloc(), zero for a