Ports: Add curl port!

I don't really want to implement them right now, but they are required
to exist for some ports.

BAN/include/BAN/RefPtr.h

@@ -128,7 +128,7 @@ namespace BAN
 		bool operator!=(RefPtr other) const { return m_pointer != other.m_pointer; }
 
 		bool empty() const { return m_pointer == nullptr; }
-		operator bool() const { return m_pointer; }
+		explicit operator bool() const { return m_pointer; }
 
 		void clear()
 		{

BAN/include/BAN/WeakPtr.h

@@ -91,7 +91,7 @@ namespace BAN
 
 		bool valid() const { return m_link && m_link->valid(); }
 
-		operator bool() const { return valid(); }
+		explicit operator bool() const { return valid(); }
 
 	private:
 		WeakPtr(const RefPtr<WeakLink<T>>& link)

kernel/include/kernel/FS/Inode.h

@@ -105,6 +105,7 @@ namespace Kernel
 		BAN::ErrorOr<void> listen(int backlog);
 		BAN::ErrorOr<size_t> sendto(BAN::ConstByteSpan message, const sockaddr* address, socklen_t address_len);
 		BAN::ErrorOr<size_t> recvfrom(BAN::ByteSpan buffer, sockaddr* address, socklen_t* address_len);
+		BAN::ErrorOr<void> getsockname(sockaddr* address, socklen_t* address_len);
 
 		// General API
 		BAN::ErrorOr<size_t> read(off_t, BAN::ByteSpan buffer);
@@ -139,7 +140,8 @@ namespace Kernel
 		virtual BAN::ErrorOr<void> listen_impl(int)													{ return BAN::Error::from_errno(ENOTSUP); }
 		virtual BAN::ErrorOr<void> bind_impl(const sockaddr*, socklen_t)							{ return BAN::Error::from_errno(ENOTSUP); }
 		virtual BAN::ErrorOr<size_t> sendto_impl(BAN::ConstByteSpan, const sockaddr*, socklen_t)	{ return BAN::Error::from_errno(ENOTSUP); }
-		virtual BAN::ErrorOr<size_t> recvfrom_impl(BAN::ByteSpan, sockaddr*, socklen_t*)				{ return BAN::Error::from_errno(ENOTSUP); }
+		virtual BAN::ErrorOr<size_t> recvfrom_impl(BAN::ByteSpan, sockaddr*, socklen_t*)			{ return BAN::Error::from_errno(ENOTSUP); }
+		virtual BAN::ErrorOr<void> getsockname_impl(sockaddr*, socklen_t*)							{ return BAN::Error::from_errno(ENOTSUP); }
 
 		// General API
 		virtual BAN::ErrorOr<size_t> read_impl(off_t, BAN::ByteSpan)		{ return BAN::Error::from_errno(ENOTSUP); }

kernel/include/kernel/Networking/IPv4Layer.h

@@ -47,6 +47,7 @@ namespace Kernel
 		virtual void unbind_socket(BAN::RefPtr<NetworkSocket>, uint16_t port) override;
 		virtual BAN::ErrorOr<void> bind_socket_to_unused(BAN::RefPtr<NetworkSocket>, const sockaddr* send_address, socklen_t send_address_len) override;
 		virtual BAN::ErrorOr<void> bind_socket_to_address(BAN::RefPtr<NetworkSocket>, const sockaddr* address, socklen_t address_len) override;
+		virtual BAN::ErrorOr<void> get_socket_address(BAN::RefPtr<NetworkSocket>, sockaddr* address, socklen_t* address_len) override;
 
 		virtual BAN::ErrorOr<size_t> sendto(NetworkSocket&, BAN::ConstByteSpan, const sockaddr*, socklen_t) override;
 

kernel/include/kernel/Networking/NetworkLayer.h

@@ -25,6 +25,7 @@ namespace Kernel
 		virtual void unbind_socket(BAN::RefPtr<NetworkSocket>, uint16_t port) = 0;
 		virtual BAN::ErrorOr<void> bind_socket_to_unused(BAN::RefPtr<NetworkSocket>, const sockaddr* send_address, socklen_t send_address_len) = 0;
 		virtual BAN::ErrorOr<void> bind_socket_to_address(BAN::RefPtr<NetworkSocket>, const sockaddr* address, socklen_t address_len) = 0;
+		virtual BAN::ErrorOr<void> get_socket_address(BAN::RefPtr<NetworkSocket>, sockaddr* address, socklen_t* address_len) = 0;
 
 		virtual BAN::ErrorOr<size_t> sendto(NetworkSocket&, BAN::ConstByteSpan, const sockaddr*, socklen_t) = 0;
 

kernel/include/kernel/Networking/NetworkSocket.h

@@ -42,6 +42,7 @@ namespace Kernel
 		NetworkSocket(NetworkLayer&, ino_t, const TmpInodeInfo&);
 
 		virtual BAN::ErrorOr<long> ioctl_impl(int request, void* arg) override;
+		virtual BAN::ErrorOr<void> getsockname_impl(sockaddr*, socklen_t*) override;
 
 	protected:
 		NetworkLayer&		m_network_layer;

kernel/include/kernel/Process.h

@@ -119,6 +119,10 @@ namespace Kernel
 		BAN::ErrorOr<long> sys_chown(const char*, uid_t, gid_t);
 
 		BAN::ErrorOr<long> sys_socket(int domain, int type, int protocol);
+		BAN::ErrorOr<long> sys_getsockname(int socket, sockaddr* address, socklen_t* address_len);
+		BAN::ErrorOr<long> sys_getsockopt(int socket, int level, int option_name, void* option_value, socklen_t* option_len);
+		BAN::ErrorOr<long> sys_setsockopt(int socket, int level, int option_name, const void* option_value, socklen_t option_len);
+
 		BAN::ErrorOr<long> sys_accept(int socket, sockaddr* address, socklen_t* address_len);
 		BAN::ErrorOr<long> sys_bind(int socket, const sockaddr* address, socklen_t address_len);
 		BAN::ErrorOr<long> sys_connect(int socket, const sockaddr* address, socklen_t address_len);

kernel/kernel/FS/Inode.cpp

@@ -164,6 +164,14 @@ namespace Kernel
 		return recvfrom_impl(buffer, address, address_len);
 	};
 
+	BAN::ErrorOr<void> Inode::getsockname(sockaddr* address, socklen_t* address_len)
+	{
+		LockGuard _(m_mutex);
+		if (!mode().ifsock())
+			return BAN::Error::from_errno(ENOTSOCK);
+		return getsockname_impl(address, address_len);
+	}
+
 	BAN::ErrorOr<size_t> Inode::read(off_t offset, BAN::ByteSpan buffer)
 	{
 		LockGuard _(m_mutex);

kernel/kernel/Networking/IPv4Layer.cpp

@@ -139,6 +139,28 @@ namespace Kernel
 		return {};
 	}
 
+	BAN::ErrorOr<void> IPv4Layer::get_socket_address(BAN::RefPtr<NetworkSocket> socket, sockaddr* address, socklen_t* address_len)
+	{
+		if (*address_len < (socklen_t)sizeof(sockaddr_in))
+			return BAN::Error::from_errno(ENOBUFS);
+
+		sockaddr_in* in_addr = reinterpret_cast<sockaddr_in*>(address);
+
+		SpinLockGuard _(m_bound_socket_lock);
+		for (auto& [bound_port, bound_socket] : m_bound_sockets)
+		{
+			if (socket != bound_socket.lock())
+				continue;
+			// FIXME: sockets should have bound address
+			in_addr->sin_family = AF_INET;
+			in_addr->sin_port = bound_port;
+			in_addr->sin_addr.s_addr = INADDR_ANY;
+			return {};
+		}
+
+		return {};
+	}
+
 	BAN::ErrorOr<size_t> IPv4Layer::sendto(NetworkSocket& socket, BAN::ConstByteSpan buffer, const sockaddr* address, socklen_t address_len)
 	{
 		if (address->sa_family != AF_INET)

kernel/kernel/Networking/NetworkSocket.cpp

@@ -100,4 +100,10 @@ namespace Kernel
 		}
 	}
 
+	BAN::ErrorOr<void> NetworkSocket::getsockname_impl(sockaddr* address, socklen_t* address_len)
+	{
+		TRY(m_network_layer.get_socket_address(this, address, address_len));
+		return {};
+	}
+
 }

kernel/kernel/OpenFileDescriptorSet.cpp

@@ -95,8 +95,7 @@ namespace Kernel
 
 	BAN::ErrorOr<int> OpenFileDescriptorSet::socket(int domain, int type, int protocol)
 	{
-		if (protocol != 0)
+		bool valid_protocol = true;
-			return BAN::Error::from_errno(EPROTONOSUPPORT);
 
 		SocketDomain sock_domain;
 		switch (domain)
@@ -109,6 +108,7 @@ namespace Kernel
 				break;
 			case AF_UNIX:
 				sock_domain = SocketDomain::UNIX;
+				valid_protocol = false;
 				break;
 			default:
 				return BAN::Error::from_errno(EPROTOTYPE);
@@ -119,17 +119,25 @@ namespace Kernel
 		{
 			case SOCK_STREAM:
 				sock_type = SocketType::STREAM;
+				if (protocol != IPPROTO_TCP)
+					valid_protocol = false;
 				break;
 			case SOCK_DGRAM:
 				sock_type = SocketType::DGRAM;
+				if (protocol != IPPROTO_UDP)
+					valid_protocol = false;
 				break;
 			case SOCK_SEQPACKET:
 				sock_type = SocketType::SEQPACKET;
+				valid_protocol = false;
 				break;
 			default:
 				return BAN::Error::from_errno(EPROTOTYPE);
 		}
 
+		if (protocol && !valid_protocol)
+			return BAN::Error::from_errno(EPROTONOSUPPORT);
+
 		auto socket = TRY(NetworkManager::get().create_socket(sock_domain, sock_type, 0777, m_credentials.euid(), m_credentials.egid()));
 
 		int fd = TRY(get_free_fd());

kernel/kernel/Process.cpp

@@ -911,6 +911,56 @@ namespace Kernel
 		return TRY(m_open_file_descriptors.socket(domain, type, protocol));
 	}
 
+	BAN::ErrorOr<long> Process::sys_getsockname(int socket, sockaddr* address, socklen_t* address_len)
+	{
+		LockGuard _(m_process_lock);
+		TRY(validate_pointer_access(address_len, sizeof(address_len)));
+		TRY(validate_pointer_access(address, *address_len));
+
+		auto inode = TRY(m_open_file_descriptors.inode_of(socket));
+		if (!inode->mode().ifsock())
+			return BAN::Error::from_errno(ENOTSOCK);
+
+		TRY(inode->getsockname(address, address_len));
+		return 0;
+	}
+
+	BAN::ErrorOr<long> Process::sys_getsockopt(int socket, int level, int option_name, void* option_value, socklen_t* option_len)
+	{
+		LockGuard _(m_process_lock);
+		TRY(validate_pointer_access(option_len, sizeof(option_len)));
+		TRY(validate_pointer_access(option_value, *option_len));
+
+		auto inode = TRY(m_open_file_descriptors.inode_of(socket));
+		if (!inode->mode().ifsock())
+			return BAN::Error::from_errno(ENOTSOCK);
+
+		// Because all networking is synchronous, there can not be errors to report
+		if (level == SOL_SOCKET && option_name == SO_ERROR)
+		{
+			if (*option_len)
+				*reinterpret_cast<uint8_t*>(option_value) = 0;
+			*option_len = BAN::Math::min<socklen_t>(*option_len, sizeof(int));
+			return 0;
+		}
+
+		dprintln("SYS_GETSOCKOPT {}, {}, {}, {}, {}", socket, level, option_name, option_value, option_len);
+		return BAN::Error::from_errno(ENOTSUP);
+	}
+
+	BAN::ErrorOr<long> Process::sys_setsockopt(int socket, int level, int option_name, const void* option_value, socklen_t option_len)
+	{
+		LockGuard _(m_process_lock);
+		TRY(validate_pointer_access(option_value, option_len));
+
+		auto inode = TRY(m_open_file_descriptors.inode_of(socket));
+		if (!inode->mode().ifsock())
+			return BAN::Error::from_errno(ENOTSOCK);
+
+		dprintln("SYS_GETSOCKOPT {}, {}, {}, {}, {}", socket, level, option_name, option_value, option_len);
+		return BAN::Error::from_errno(ENOTSUP);
+	}
+
 	BAN::ErrorOr<long> Process::sys_accept(int socket, sockaddr* address, socklen_t* address_len)
 	{
 		if (address && !address_len)

kernel/kernel/Terminal/TTY.cpp

@@ -361,7 +361,7 @@ namespace Kernel
 
 	bool TTY::is_initialized()
 	{
-		return s_tty;
+		return !!s_tty;
 	}
 
 }

libc/CMakeLists.txt

@@ -10,6 +10,7 @@ set(LIBC_SOURCES
 	fcntl.cpp
 	grp.cpp
 	malloc.cpp
+	netdb.cpp
 	printf_impl.cpp
 	pwd.cpp
 	scanf_impl.cpp

libc/include/limits.h

@@ -61,6 +61,7 @@ __BEGIN_DECLS
 #define NAME_MAX 255
 #define PATH_MAX 256
 #define LOGIN_NAME_MAX 256
+#define HOST_NAME_MAX 255
 
 __END_DECLS
 

libc/include/netdb.h

@@ -90,6 +90,7 @@ void				endservent(void);
 void				freeaddrinfo(struct addrinfo* ai);
 const char*			gai_strerror(int ecode);
 int					getaddrinfo(const char* __restrict nodename, const char* __restrict servname, const struct addrinfo* __restrict hints, struct addrinfo** __restrict res);
+struct hostent*		gethostbyname(const char* name);
 struct hostent*		gethostent(void);
 int					getnameinfo(const struct sockaddr* __restrict sa, socklen_t salen, char* __restrict node, socklen_t nodelen, char* __restrict service, socklen_t servicelen, int flags);
 struct netent*		getnetbyaddr(uint32_t net, int type);

libc/include/sys/syscall.h

@@ -78,6 +78,9 @@ __BEGIN_DECLS
 	O(SYS_SMO_DELETE,		smo_delete)		\
 	O(SYS_SMO_MAP,			smo_map)		\
 	O(SYS_ISATTY,			isatty)			\
+	O(SYS_GETSOCKNAME,		getsockname)	\
+	O(SYS_GETSOCKOPT,		getsockopt)		\
+	O(SYS_SETSOCKOPT,		setsockopt)		\
 
 enum Syscall
 {

libc/netdb.cpp

@@ -0,0 +1,69 @@
+#include <BAN/Bitcast.h>
+
+#include <arpa/inet.h>
+#include <limits.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+struct hostent* gethostbyname(const char* name)
+{
+	static char name_buffer[HOST_NAME_MAX + 1];
+	static in_addr_t addr_buffer;
+	static in_addr_t* addr_ptrs[2];
+	static struct hostent hostent;
+
+	if (strlen(name) > HOST_NAME_MAX)
+		return nullptr;
+	strcpy(name_buffer, name);
+	hostent.h_name = name_buffer;
+
+	hostent.h_aliases = nullptr;
+
+	hostent.h_addrtype = AF_INET;
+	hostent.h_length = sizeof(in_addr_t);
+
+	addr_ptrs[0] = &addr_buffer;
+	addr_ptrs[1] = nullptr;
+	hostent.h_addr_list = reinterpret_cast<char**>(addr_ptrs);
+
+	int socket = -1;
+
+	if (in_addr_t ipv4 = inet_addr(name); ipv4 != (in_addr_t)(-1))
+		addr_buffer = ipv4;
+	else
+	{
+		int socket = ::socket(AF_UNIX, SOCK_SEQPACKET, 0);
+		if (socket == -1)
+			return nullptr;
+
+		sockaddr_un addr;
+		addr.sun_family = AF_UNIX;
+		strcpy(addr.sun_path, "/tmp/resolver.sock");
+		if (connect(socket, (sockaddr*)&addr, sizeof(addr)) == -1)
+			goto error_close_socket;
+
+		if (send(socket, name, strlen(name), 0) == -1)
+			goto error_close_socket;
+
+		sockaddr_storage storage;
+		if (recv(socket, &storage, sizeof(storage), 0) == -1)
+			goto error_close_socket;
+
+		close(socket);
+
+		if (storage.ss_family != AF_INET)
+			return nullptr;
+
+		addr_buffer = *reinterpret_cast<in_addr_t*>(storage.ss_storage);
+	}
+
+	return &hostent;
+
+error_close_socket:
+	close(socket);
+	return nullptr;
+}

libc/stdio.cpp

@@ -1,3 +1,6 @@
+#include <BAN/Assert.h>
+#include <BAN/Debug.h>
+
 #include <bits/printf.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -603,7 +606,11 @@ int remove(const char* path)
 }
 
 // TODO
-int rename(const char*, const char*);
+int rename(const char* old, const char* _new)
+{
+    dwarnln("rename({}, {})", old, _new);
+    ASSERT_NOT_REACHED();
+}
 
 void rewind(FILE* file)
 {

libc/sys/socket.cpp

@@ -62,3 +62,18 @@ int socket(int domain, int type, int protocol)
 {
 	return syscall(SYS_SOCKET, domain, type, protocol);
 }
+
+int getsockname(int socket, struct sockaddr* __restrict address, socklen_t* __restrict address_len)
+{
+	return syscall(SYS_GETSOCKNAME, socket, address, address_len);
+}
+
+int getsockopt(int socket, int level, int option_name, void* __restrict option_value, socklen_t* __restrict option_len)
+{
+	return syscall(SYS_GETSOCKOPT, socket, level, option_name, option_value, option_len);
+}
+
+int setsockopt(int socket, int level, int option_name, const void* option_value, socklen_t option_len)
+{
+	return syscall(SYS_SETSOCKOPT, socket, level, option_name, option_value, option_len);
+}

libc/time.cpp

@@ -1,3 +1,6 @@
+#include <BAN/Assert.h>
+#include <BAN/Debug.h>
+
 #include <sys/syscall.h>
 #include <time.h>
 #include <unistd.h>
@@ -75,3 +78,9 @@ struct tm* localtime(const time_t* timer)
 	// FIXME: support timezones
 	return gmtime(timer);
 }
+
+size_t strftime(char* __restrict s, size_t maxsize, const char* __restrict format, const struct tm* __restrict timeptr)
+{
+    dwarnln("strftime({}, {}, {}, {})", s, maxsize, format, timeptr);
+    ASSERT_NOT_REACHED();
+}

ports/curl/.gitignore

@@ -0,0 +1 @@
+curl-*

ports/curl/build.sh

@@ -0,0 +1,58 @@
+#!/bin/sh
+
+if [ -z $BANAN_ARCH ]; then
+	echo  "You must set the BANAN_ARCH environment variable" >&2
+	exit 1
+fi
+
+if [ -z $BANAN_SYSROOT ]; then
+	echo  "You must set the BANAN_ARCH environment variable" >&2
+	exit 1
+fi
+
+if [ -z $BANAN_TOOLCHAIN_PREFIX ]; then
+	echo  "You must set the BANAN_TOOLCHAIN_PREFIX environment variable" >&2
+	exit 1
+fi
+
+CURL_VERSION="curl-8.8.0"
+CURL_TAR="$CURL_VERSION.tar.gz"
+CURL_URL="https://curl.se/download/$CURL_TAR"
+
+cd $(dirname $(realpath $0))
+
+if [ ! -d $CURL_VERSION ]; then
+	if [ ! -f $CURL_TAR ]; then
+		wget $CURL_URL
+	fi
+	tar xf $CURL_TAR
+
+	for patch in ./patches/*; do
+		patch -ruN -d $CURL_VERSION < "$patch"
+	done
+
+	grep -qxF doom ../installed || echo curl >> ../installed
+fi
+
+cd $CURL_VERSION
+
+export PATH="$BANAN_TOOLCHAIN_PREFIX/bin:$PATH"
+
+if [ ! -d "build-${BANAN_ARCH}" ]; then
+	mkdir -p "build-${BANAN_ARCH}"
+	cd "build-${BANAN_ARCH}"
+
+	../configure                    \
+		--host=x86_64-banan_os      \
+		--prefix=$BANAN_SYSROOT/usr \
+		--without-ssl               \
+		--disable-threaded-resolver \
+		--disable-ipv6              \
+		--disable-docs
+
+	cd ..
+fi
+
+cd "build-${BANAN_ARCH}"
+
+make && make install

ports/curl/patches/0001-add-banan_os-target.patch

@@ -0,0 +1,12 @@
+diff -ruN curl-8.8.0/config.sub curl-patched/config.sub
+--- curl-8.8.0/config.sub	2023-03-13 00:39:42.000000000 +0200
++++ curl-patched/config.sub	2024-06-17 21:16:00.348556957 +0300
+@@ -1754,7 +1754,7 @@
+ 	     | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
+ 	     | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
+ 	     | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx* | zephyr* \
+-	     | fiwix* )
++	     | fiwix* | banan_os* )
+ 		;;
+ 	# This one is extra strict with allowed versions
+ 	sco3.2v2 | sco3.2v[4-9]* | sco5v6*)

ports/doom/patches/0001-Add-support-for-banan-os.patch

@@ -5,7 +5,7 @@ Subject: [PATCH] Add support for banan-os
 
 ---
  doomgeneric/Makefile.banan_os        |  57 +++++++++++
- doomgeneric/doomgeneric_banan_os.cpp | 144 +++++++++++++++++++++++++++
+ doomgeneric/doomgeneric_banan_os.cpp | 138 +++++++++++++++++++++++++++
  2 files changed, 200 insertions(+)
  create mode 100644 doomgeneric/Makefile.banan_os
  create mode 100644 doomgeneric/doomgeneric_banan_os.cpp
@@ -79,7 +79,7 @@ new file mode 100644
 index 0000000..9161771
 --- /dev/null
 +++ b/doomgeneric/doomgeneric_banan_os.cpp
-@@ -0,0 +1,144 @@
+@@ -0,0 +1,138 @@
 +extern "C"
 +{
 +#include "doomgeneric.h"
@@ -217,12 +217,6 @@ index 0000000..9161771
 +	return 0;
 +}
 +
-+int rename(const char* oldp, const char* newp)
-+{
-+	fprintf(stderr, "rename(\"%s\", \"%s\")\n", oldp, newp);
-+	exit(1);
-+}
-+
 +}
 -- 
 2.45.2