dns: implement GetHostByName redirection (backend TODO)

libstratosphere/include/stratosphere.hpp

@@ -74,6 +74,7 @@
 #include <stratosphere/settings.hpp>
 #include <stratosphere/sf.hpp>
 #include <stratosphere/sm.hpp>
+#include <stratosphere/socket.hpp>
 #include <stratosphere/spl.hpp>
 #include <stratosphere/time.hpp>
 #include <stratosphere/updater.hpp>

libstratosphere/include/stratosphere/socket.hpp

@@ -14,4 +14,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #pragma once
+#include <sys/socket.h>
+#include <netdb.h>
+#include <netinet/in.h>
 #include <stratosphere/socket/socket_types.hpp>
+#include <stratosphere/socket/socket_api.hpp>

libstratosphere/include/stratosphere/socket/socket_api.hpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2018-2020 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/>.
+ */
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/socket/socket_types.hpp>
+
+namespace ams::socket {
+
+    u32 InetHtonl(u32 host);
+    u16 InetHtons(u16 host);
+    u32 InetNtohl(u32 net);
+    u16 InetNtohs(u16 net);
+
+}

libstratosphere/include/stratosphere/socket/socket_types.hpp

@@ -27,7 +27,7 @@ namespace ams::socket {
     constexpr inline unsigned int FdSetSize = 0x400;
 
     template<u32 A, u32 B, u32 C, u32 D>
-    constexpr inline InAddrT EncodeInAddr = (A << 24) | (B << 16) | (C << 8) | (D << 0);
+    constexpr inline InAddrT EncodeInAddr = util::ConvertToBigEndian(InAddrT{(A << 24) | (B << 16) | (C << 8) | (D << 0)});
 
     constexpr inline InAddrT InAddr_Any       = EncodeInAddr<  0,   0,   0,   0>;
     constexpr inline InAddrT InAddr_Broadcast = EncodeInAddr<255, 255, 255, 255>;
@@ -62,4 +62,8 @@ namespace ams::socket {
         char **h_addr_list;
     };
 
+    struct InAddr {
+        InAddrT s_addr;
+    };
+
 }

libstratosphere/source/socket/impl/socket_allocator.hpp

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2018-2020 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/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::socket::impl {
+
+    void *Alloc(size_t size);
+    void *Calloc(size_t num, size_t size);
+    void Free(void *ptr);
+
+}

libstratosphere/source/socket/impl/socket_api.hpp

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2018-2020 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::socket::impl {
+
+    u32 InetHtonl(u32 host);
+    u16 InetHtons(u16 host);
+    u32 InetNtohl(u32 net);
+    u16 InetNtohs(u16 net);
+
+}

libstratosphere/source/socket/impl/socket_api.os.horizon.cpp

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2018-2020 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>
+#include "socket_api.hpp"
+#include "socket_allocator.hpp"
+
+namespace ams::socket::impl {
+
+    void *Alloc(size_t size) {
+        /* TODO: expheap, heap generation. */
+        return ams::Malloc(size);
+    }
+
+    void *Calloc(size_t num, size_t size) {
+        if (void *ptr = Alloc(size * num); ptr != nullptr) {
+            std::memset(ptr, 0, size * num);
+            return ptr;
+        } else {
+            return nullptr;
+        }
+    }
+
+    void Free(void *ptr) {
+        /* TODO: expheap, heap generation. */
+        return ams::Free(ptr);
+    }
+
+    u32 InetHtonl(u32 host) {
+        if constexpr (util::IsBigEndian()) {
+            return host;
+        } else {
+            return util::SwapBytes(host);
+        }
+    }
+
+    u16 InetHtons(u16 host) {
+        if constexpr (util::IsBigEndian()) {
+            return host;
+        } else {
+            return util::SwapBytes(host);
+        }
+    }
+
+    u32 InetNtohl(u32 net) {
+        if constexpr (util::IsBigEndian()) {
+            return net;
+        } else {
+            return util::SwapBytes(net);
+        }
+    }
+
+    u16 InetNtohs(u16 net) {
+        if constexpr (util::IsBigEndian()) {
+            return net;
+        } else {
+            return util::SwapBytes(net);
+        }
+    }
+
+}

libstratosphere/source/socket/socket_api.cpp

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018-2020 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>
+#include "impl/socket_api.hpp"
+
+namespace ams::socket {
+
+    u32 InetHtonl(u32 host) {
+        return impl::InetHtonl(host);
+    }
+
+    u16 InetHtons(u16 host) {
+        return impl::InetHtons(host);
+    }
+
+    u32 InetNtohl(u32 net) {
+        return impl::InetNtohl(net);
+    }
+
+    u16 InetNtohs(u16 net) {
+        return impl::InetNtohs(net);
+    }
+
+}