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D40274.id122439.diff
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D40274.id122439.diff
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diff --git a/libexec/flua/Makefile b/libexec/flua/Makefile
--- a/libexec/flua/Makefile
+++ b/libexec/flua/Makefile
@@ -19,7 +19,7 @@
# FreeBSD Extensions
.PATH: ${.CURDIR}/modules
SRCS+= linit_flua.c
-SRCS+= lfs.c lposix.c
+SRCS+= lfetch.c lfs.c lposix.c
CFLAGS+= -I${SRCTOP}/lib/liblua -I${.CURDIR}/modules -I${LUASRC}
CFLAGS+= -DLUA_PROGNAME="\"${PROG}\""
diff --git a/libexec/flua/linit_flua.c b/libexec/flua/linit_flua.c
--- a/libexec/flua/linit_flua.c
+++ b/libexec/flua/linit_flua.c
@@ -34,6 +34,7 @@
#include "lualib.h"
#include "lauxlib.h"
+#include "lfetch.h"
#include "lfs.h"
#include "lposix.h"
#include "lua_ucl.h"
@@ -57,6 +58,7 @@
{LUA_BITLIBNAME, luaopen_bit32},
#endif
/* FreeBSD Extensions */
+ {"fetch", luaopen_fetch},
{"lfs", luaopen_lfs},
{"posix.libgen", luaopen_posix_libgen},
{"posix.stdlib", luaopen_posix_stdlib},
diff --git a/libexec/flua/modules/lfetch.h b/libexec/flua/modules/lfetch.h
new file mode 100644
--- /dev/null
+++ b/libexec/flua/modules/lfetch.h
@@ -0,0 +1,11 @@
+/*-
+ *
+ * This file is in the public domain.
+ */
+/* $FreeBSD$ */
+
+#pragma once
+
+#include <lua.h>
+
+int luaopen_fetch(lua_State *L);
diff --git a/libexec/flua/modules/lfetch.c b/libexec/flua/modules/lfetch.c
new file mode 100644
--- /dev/null
+++ b/libexec/flua/modules/lfetch.c
@@ -0,0 +1,82 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2023 Dave Cottlehuber <dch@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <errno.h>
+#include <sys/param.h>
+#include <stdio.h>
+#include <fetch.h>
+
+#include <lua.h>
+#include "lauxlib.h"
+#include "lfetch.h"
+
+/*
+ * Minimal implementation of libfetch to GET cloudinit style metadata
+ */
+
+static int l_fetchGet(lua_State *L) {
+ struct url *fetch_url;
+ // did we get a string on the stack
+ const char *url = luaL_checkstring(L, 1);
+ // is it a valid URL
+ fetch_url = fetchParseURL (url);
+ if (fetch_url == NULL) {
+ // stash the goodies
+ lua_pushnil(L);
+ lua_pushstring(L, "Failed to parse URL");
+ // clean up
+ fetchFreeURL(fetch_url);
+ return 2;
+ }
+
+ // return a fixed body for the moment
+ const size_t buffer_size = 8192; // big enough for anybody?
+ char buffer[buffer_size];
+ // clean up
+ fetchFreeURL(fetch_url);
+ // return the goodies
+ lua_pushlstring(L, buffer, buffer_size);
+ lua_pushnil(L);
+ return 2;
+}
+
+static const struct luaL_Reg fetchlib[] = {
+ {"get", l_fetchGet},
+ {NULL, NULL}
+};
+
+int
+luaopen_fetch(lua_State *L)
+{
+ luaL_newlib(L, fetchlib);
+ return (1);
+}
+
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