mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-19 01:22:38 +01:00
356 lines
8.0 KiB
Go
356 lines
8.0 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build ignore
|
|
|
|
// Parse the header files for OpenBSD and generate a Go usable sysctl MIB.
|
|
//
|
|
// Build a MIB with each entry being an array containing the level, type and
|
|
// a hash that will contain additional entries if the current entry is a node.
|
|
// We then walk this MIB and create a flattened sysctl name to OID hash.
|
|
|
|
package main
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"regexp"
|
|
"sort"
|
|
"strings"
|
|
)
|
|
|
|
var (
|
|
goos, goarch string
|
|
)
|
|
|
|
// cmdLine returns this programs's commandline arguments.
|
|
func cmdLine() string {
|
|
return "go run mksysctl_openbsd.go " + strings.Join(os.Args[1:], " ")
|
|
}
|
|
|
|
// buildTags returns build tags.
|
|
func buildTags() string {
|
|
return fmt.Sprintf("%s,%s", goarch, goos)
|
|
}
|
|
|
|
// reMatch performs regular expression match and stores the substring slice to value pointed by m.
|
|
func reMatch(re *regexp.Regexp, str string, m *[]string) bool {
|
|
*m = re.FindStringSubmatch(str)
|
|
if *m != nil {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
type nodeElement struct {
|
|
n int
|
|
t string
|
|
pE *map[string]nodeElement
|
|
}
|
|
|
|
var (
|
|
debugEnabled bool
|
|
mib map[string]nodeElement
|
|
node *map[string]nodeElement
|
|
nodeMap map[string]string
|
|
sysCtl []string
|
|
)
|
|
|
|
var (
|
|
ctlNames1RE = regexp.MustCompile(`^#define\s+(CTL_NAMES)\s+{`)
|
|
ctlNames2RE = regexp.MustCompile(`^#define\s+(CTL_(.*)_NAMES)\s+{`)
|
|
ctlNames3RE = regexp.MustCompile(`^#define\s+((.*)CTL_NAMES)\s+{`)
|
|
netInetRE = regexp.MustCompile(`^netinet/`)
|
|
netInet6RE = regexp.MustCompile(`^netinet6/`)
|
|
netRE = regexp.MustCompile(`^net/`)
|
|
bracesRE = regexp.MustCompile(`{.*}`)
|
|
ctlTypeRE = regexp.MustCompile(`{\s+"(\w+)",\s+(CTLTYPE_[A-Z]+)\s+}`)
|
|
fsNetKernRE = regexp.MustCompile(`^(fs|net|kern)_`)
|
|
)
|
|
|
|
func debug(s string) {
|
|
if debugEnabled {
|
|
fmt.Fprintln(os.Stderr, s)
|
|
}
|
|
}
|
|
|
|
// Walk the MIB and build a sysctl name to OID mapping.
|
|
func buildSysctl(pNode *map[string]nodeElement, name string, oid []int) {
|
|
lNode := pNode // local copy of pointer to node
|
|
var keys []string
|
|
for k := range *lNode {
|
|
keys = append(keys, k)
|
|
}
|
|
sort.Strings(keys)
|
|
|
|
for _, key := range keys {
|
|
nodename := name
|
|
if name != "" {
|
|
nodename += "."
|
|
}
|
|
nodename += key
|
|
|
|
nodeoid := append(oid, (*pNode)[key].n)
|
|
|
|
if (*pNode)[key].t == `CTLTYPE_NODE` {
|
|
if _, ok := nodeMap[nodename]; ok {
|
|
lNode = &mib
|
|
ctlName := nodeMap[nodename]
|
|
for _, part := range strings.Split(ctlName, ".") {
|
|
lNode = ((*lNode)[part]).pE
|
|
}
|
|
} else {
|
|
lNode = (*pNode)[key].pE
|
|
}
|
|
buildSysctl(lNode, nodename, nodeoid)
|
|
} else if (*pNode)[key].t != "" {
|
|
oidStr := []string{}
|
|
for j := range nodeoid {
|
|
oidStr = append(oidStr, fmt.Sprintf("%d", nodeoid[j]))
|
|
}
|
|
text := "\t{ \"" + nodename + "\", []_C_int{ " + strings.Join(oidStr, ", ") + " } }, \n"
|
|
sysCtl = append(sysCtl, text)
|
|
}
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
// Get the OS (using GOOS_TARGET if it exist)
|
|
goos = os.Getenv("GOOS_TARGET")
|
|
if goos == "" {
|
|
goos = os.Getenv("GOOS")
|
|
}
|
|
// Get the architecture (using GOARCH_TARGET if it exists)
|
|
goarch = os.Getenv("GOARCH_TARGET")
|
|
if goarch == "" {
|
|
goarch = os.Getenv("GOARCH")
|
|
}
|
|
// Check if GOOS and GOARCH environment variables are defined
|
|
if goarch == "" || goos == "" {
|
|
fmt.Fprintf(os.Stderr, "GOARCH or GOOS not defined in environment\n")
|
|
os.Exit(1)
|
|
}
|
|
|
|
mib = make(map[string]nodeElement)
|
|
headers := [...]string{
|
|
`sys/sysctl.h`,
|
|
`sys/socket.h`,
|
|
`sys/tty.h`,
|
|
`sys/malloc.h`,
|
|
`sys/mount.h`,
|
|
`sys/namei.h`,
|
|
`sys/sem.h`,
|
|
`sys/shm.h`,
|
|
`sys/vmmeter.h`,
|
|
`uvm/uvmexp.h`,
|
|
`uvm/uvm_param.h`,
|
|
`uvm/uvm_swap_encrypt.h`,
|
|
`ddb/db_var.h`,
|
|
`net/if.h`,
|
|
`net/if_pfsync.h`,
|
|
`net/pipex.h`,
|
|
`netinet/in.h`,
|
|
`netinet/icmp_var.h`,
|
|
`netinet/igmp_var.h`,
|
|
`netinet/ip_ah.h`,
|
|
`netinet/ip_carp.h`,
|
|
`netinet/ip_divert.h`,
|
|
`netinet/ip_esp.h`,
|
|
`netinet/ip_ether.h`,
|
|
`netinet/ip_gre.h`,
|
|
`netinet/ip_ipcomp.h`,
|
|
`netinet/ip_ipip.h`,
|
|
`netinet/pim_var.h`,
|
|
`netinet/tcp_var.h`,
|
|
`netinet/udp_var.h`,
|
|
`netinet6/in6.h`,
|
|
`netinet6/ip6_divert.h`,
|
|
`netinet6/pim6_var.h`,
|
|
`netinet/icmp6.h`,
|
|
`netmpls/mpls.h`,
|
|
}
|
|
|
|
ctls := [...]string{
|
|
`kern`,
|
|
`vm`,
|
|
`fs`,
|
|
`net`,
|
|
//debug /* Special handling required */
|
|
`hw`,
|
|
//machdep /* Arch specific */
|
|
`user`,
|
|
`ddb`,
|
|
//vfs /* Special handling required */
|
|
`fs.posix`,
|
|
`kern.forkstat`,
|
|
`kern.intrcnt`,
|
|
`kern.malloc`,
|
|
`kern.nchstats`,
|
|
`kern.seminfo`,
|
|
`kern.shminfo`,
|
|
`kern.timecounter`,
|
|
`kern.tty`,
|
|
`kern.watchdog`,
|
|
`net.bpf`,
|
|
`net.ifq`,
|
|
`net.inet`,
|
|
`net.inet.ah`,
|
|
`net.inet.carp`,
|
|
`net.inet.divert`,
|
|
`net.inet.esp`,
|
|
`net.inet.etherip`,
|
|
`net.inet.gre`,
|
|
`net.inet.icmp`,
|
|
`net.inet.igmp`,
|
|
`net.inet.ip`,
|
|
`net.inet.ip.ifq`,
|
|
`net.inet.ipcomp`,
|
|
`net.inet.ipip`,
|
|
`net.inet.mobileip`,
|
|
`net.inet.pfsync`,
|
|
`net.inet.pim`,
|
|
`net.inet.tcp`,
|
|
`net.inet.udp`,
|
|
`net.inet6`,
|
|
`net.inet6.divert`,
|
|
`net.inet6.ip6`,
|
|
`net.inet6.icmp6`,
|
|
`net.inet6.pim6`,
|
|
`net.inet6.tcp6`,
|
|
`net.inet6.udp6`,
|
|
`net.mpls`,
|
|
`net.mpls.ifq`,
|
|
`net.key`,
|
|
`net.pflow`,
|
|
`net.pfsync`,
|
|
`net.pipex`,
|
|
`net.rt`,
|
|
`vm.swapencrypt`,
|
|
//vfsgenctl /* Special handling required */
|
|
}
|
|
|
|
// Node name "fixups"
|
|
ctlMap := map[string]string{
|
|
"ipproto": "net.inet",
|
|
"net.inet.ipproto": "net.inet",
|
|
"net.inet6.ipv6proto": "net.inet6",
|
|
"net.inet6.ipv6": "net.inet6.ip6",
|
|
"net.inet.icmpv6": "net.inet6.icmp6",
|
|
"net.inet6.divert6": "net.inet6.divert",
|
|
"net.inet6.tcp6": "net.inet.tcp",
|
|
"net.inet6.udp6": "net.inet.udp",
|
|
"mpls": "net.mpls",
|
|
"swpenc": "vm.swapencrypt",
|
|
}
|
|
|
|
// Node mappings
|
|
nodeMap = map[string]string{
|
|
"net.inet.ip.ifq": "net.ifq",
|
|
"net.inet.pfsync": "net.pfsync",
|
|
"net.mpls.ifq": "net.ifq",
|
|
}
|
|
|
|
mCtls := make(map[string]bool)
|
|
for _, ctl := range ctls {
|
|
mCtls[ctl] = true
|
|
}
|
|
|
|
for _, header := range headers {
|
|
debug("Processing " + header)
|
|
file, err := os.Open(filepath.Join("/usr/include", header))
|
|
if err != nil {
|
|
fmt.Fprintf(os.Stderr, "%v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
s := bufio.NewScanner(file)
|
|
for s.Scan() {
|
|
var sub []string
|
|
if reMatch(ctlNames1RE, s.Text(), &sub) ||
|
|
reMatch(ctlNames2RE, s.Text(), &sub) ||
|
|
reMatch(ctlNames3RE, s.Text(), &sub) {
|
|
if sub[1] == `CTL_NAMES` {
|
|
// Top level.
|
|
node = &mib
|
|
} else {
|
|
// Node.
|
|
nodename := strings.ToLower(sub[2])
|
|
ctlName := ""
|
|
if reMatch(netInetRE, header, &sub) {
|
|
ctlName = "net.inet." + nodename
|
|
} else if reMatch(netInet6RE, header, &sub) {
|
|
ctlName = "net.inet6." + nodename
|
|
} else if reMatch(netRE, header, &sub) {
|
|
ctlName = "net." + nodename
|
|
} else {
|
|
ctlName = nodename
|
|
ctlName = fsNetKernRE.ReplaceAllString(ctlName, `$1.`)
|
|
}
|
|
|
|
if val, ok := ctlMap[ctlName]; ok {
|
|
ctlName = val
|
|
}
|
|
if _, ok := mCtls[ctlName]; !ok {
|
|
debug("Ignoring " + ctlName + "...")
|
|
continue
|
|
}
|
|
|
|
// Walk down from the top of the MIB.
|
|
node = &mib
|
|
for _, part := range strings.Split(ctlName, ".") {
|
|
if _, ok := (*node)[part]; !ok {
|
|
debug("Missing node " + part)
|
|
(*node)[part] = nodeElement{n: 0, t: "", pE: &map[string]nodeElement{}}
|
|
}
|
|
node = (*node)[part].pE
|
|
}
|
|
}
|
|
|
|
// Populate current node with entries.
|
|
i := -1
|
|
for !strings.HasPrefix(s.Text(), "}") {
|
|
s.Scan()
|
|
if reMatch(bracesRE, s.Text(), &sub) {
|
|
i++
|
|
}
|
|
if !reMatch(ctlTypeRE, s.Text(), &sub) {
|
|
continue
|
|
}
|
|
(*node)[sub[1]] = nodeElement{n: i, t: sub[2], pE: &map[string]nodeElement{}}
|
|
}
|
|
}
|
|
}
|
|
err = s.Err()
|
|
if err != nil {
|
|
fmt.Fprintf(os.Stderr, "%v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
file.Close()
|
|
}
|
|
buildSysctl(&mib, "", []int{})
|
|
|
|
sort.Strings(sysCtl)
|
|
text := strings.Join(sysCtl, "")
|
|
|
|
fmt.Printf(srcTemplate, cmdLine(), buildTags(), text)
|
|
}
|
|
|
|
const srcTemplate = `// %s
|
|
// Code generated by the command above; DO NOT EDIT.
|
|
|
|
// +build %s
|
|
|
|
package unix
|
|
|
|
type mibentry struct {
|
|
ctlname string
|
|
ctloid []_C_int
|
|
}
|
|
|
|
var sysctlMib = []mibentry {
|
|
%s
|
|
}
|
|
`
|