Rework LuCI build system

 * Rename subdirectories to their repective OpenWrt package names
 * Make each LuCI module its own standalone package
 * Deploy a shared luci.mk which is used by each module Makefile

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

1 files changed, 225 insertions, 0 deletions

diff --git a/libs/luci-lib-nixio/src/io.c b/libs/luci-lib-nixio/src/io.c
new file mode 100644
index 000000000..12d5c7df4
--- /dev/null
+++ b/libs/luci-lib-nixio/src/io.c
@@ -0,0 +1,225 @@
+/*
+ * nixio - Linux I/O library for lua
+ *
+ *   Copyright (C) 2009 Steven Barth <steven@midlink.org>
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include "nixio.h"
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+
+
+/**
+ * send() / sendto() helper
+ */
+static int nixio_sock__sendto(lua_State *L, int to) {
+	nixio_sock *sock = nixio__checksock(L);
+	struct sockaddr_storage addr_in;
+#ifndef __WINNT__
+	struct sockaddr_un addr_un;
+#endif
+	struct sockaddr *addr = NULL;
+	socklen_t alen = 0;
+	int argoff = 2;
+
+	if (to) {
+		argoff += 2;
+		if (sock->domain == AF_INET || sock->domain == AF_INET6) {
+			const char *address = luaL_checkstring(L, 3);
+			addr = (struct sockaddr*)&addr_in;
+			alen = sizeof(addr_in);
+
+			nixio_addr naddr;
+			memset(&naddr, 0, sizeof(naddr));
+			strncpy(naddr.host, address, sizeof(naddr.host) - 1);
+			naddr.port = (uint16_t)luaL_checkinteger(L, 4);
+			naddr.family = sock->domain;
+
+			if (nixio__addr_write(&naddr, addr)) {
+				return nixio__perror_s(L);
+			}
+		}
+
+#ifndef __WINNT__
+		else if (sock->domain == AF_UNIX) {
+			size_t pathlen;
+			const char *path = luaL_checklstring(L, 3, &pathlen);
+
+			addr_un.sun_family = AF_UNIX;
+			luaL_argcheck(L, pathlen <= sizeof(addr_un.sun_path), 3, "out of range");
+			memcpy(addr_un.sun_path, path, pathlen);
+
+			addr = (struct sockaddr*)&addr_un;
+			alen = sizeof(sa_family_t) + pathlen;
+		}
+#endif
+	}
+
+	size_t len;
+	ssize_t sent;
+	const char *data = luaL_checklstring(L, 2, &len);
+
+	if (lua_gettop(L) > argoff) {
+		int offset = luaL_optint(L, argoff + 1, 0);
+		if (offset) {
+			if (offset < len) {
+				data += offset;
+				len -= offset;
+			} else {
+				len = 0;
+			}
+		}
+
+		unsigned int wlen = luaL_optint(L, argoff + 2, len);
+		if (wlen < len) {
+			len = wlen;
+		}
+	}
+
+	do {
+		sent = sendto(sock->fd, data, len, 0, addr, alen);
+	} while(sent == -1 && errno == EINTR);
+	if (sent >= 0) {
+		lua_pushinteger(L, sent);
+		return 1;
+	} else {
+		return nixio__perror_s(L);
+	}
+}
+
+/**
+ * send(data)
+ */
+static int nixio_sock_send(lua_State *L) {
+	return nixio_sock__sendto(L, 0);
+}
+
+/**
+ * sendto(data, address, port)
+ */
+static int nixio_sock_sendto(lua_State *L) {
+	return nixio_sock__sendto(L, 1);
+}
+
+
+/**
+ * recv() / recvfrom() helper
+ */
+static int nixio_sock__recvfrom(lua_State *L, int from) {
+	nixio_sock *sock = nixio__checksock(L);
+	char buffer[NIXIO_BUFFERSIZE];
+	struct sockaddr_storage addr_in;
+#ifndef __WINNT__
+	struct sockaddr_un addr_un;
+#endif
+	struct sockaddr *addr = NULL;
+	socklen_t alen = 0;
+	uint req = luaL_checkinteger(L, 2);
+	int readc;
+
+	if (sock->domain == AF_INET || sock->domain == AF_INET6) {
+		addr = (from) ? (struct sockaddr*)&addr_in : NULL;
+		alen = (from) ? sizeof(addr_in) : 0;
+	}
+#ifndef __WINNT__
+	else if (sock->domain == AF_UNIX) {
+		addr = (from) ? (struct sockaddr*)&addr_un : NULL;
+		alen = (from) ? sizeof(addr_un) : 0;
+	}
+#endif
+
+	/* We limit the readsize to NIXIO_BUFFERSIZE */
+	req = (req > NIXIO_BUFFERSIZE) ? NIXIO_BUFFERSIZE : req;
+
+	do {
+		readc = recvfrom(sock->fd, buffer, req, 0, addr, &alen);
+	} while (readc == -1 && errno == EINTR);
+
+#ifdef __WINNT__
+	if (readc < 0) {
+		int e = WSAGetLastError();
+		if (e == WSAECONNRESET || e == WSAECONNABORTED || e == WSAESHUTDOWN) {
+			readc = 0;
+		}
+	}
+#endif
+
+	if (readc < 0) {
+		return nixio__perror_s(L);
+	} else {
+		lua_pushlstring(L, buffer, readc);
+
+		if (!from) {
+			return 1;
+		}
+		/* push address. */
+		if (sock->domain == AF_INET || sock->domain == AF_INET6) {
+			nixio_addr naddr;
+			if (!nixio__addr_parse(&naddr, (struct sockaddr *)&addr_in)) {
+				lua_pushstring(L, naddr.host);
+				lua_pushinteger(L, naddr.port);
+				return 3;
+			} else {
+				return 1;
+			}
+		}
+#ifndef __WINNT__
+		else if (sock->domain == AF_UNIX && alen > sizeof(sa_family_t)) {
+			/* if first char is non-null then the path is not in the
+			   abstract namespace and alen includes the trailing null */
+			if (addr_un.sun_path[0])
+				--alen;
+			lua_pushlstring(L, addr_un.sun_path, alen - sizeof(sa_family_t));
+			return 2;
+		}
+#endif
+	}
+	return 1;
+}
+
+/**
+ * recv(count)
+ */
+static int nixio_sock_recv(lua_State *L) {
+	return nixio_sock__recvfrom(L, 0);
+}
+
+/**
+ * recvfrom(count)
+ */
+static int nixio_sock_recvfrom(lua_State *L) {
+	return nixio_sock__recvfrom(L, 1);
+}
+
+
+/* module table */
+static const luaL_reg M[] = {
+	{"send",	nixio_sock_send},
+	{"sendto",	nixio_sock_sendto},
+	{"recv",	nixio_sock_recv},
+	{"recvfrom",nixio_sock_recvfrom},
+	{"write",	nixio_sock_send},
+	{"read",	nixio_sock_recv},
+	{NULL,			NULL}
+};
+
+void nixio_open_io(lua_State *L) {
+	lua_pushvalue(L, -2);
+	luaL_register(L, NULL, M);
+	lua_pop(L, 1);
+}