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sipexer.go
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/**
* SIP (RFC3261) Command Line Tool
* (C) Copyright 2021-2022 Daniel-Constantin Mierla (asipto.com)
* License: GPLv3
*/
package main
import (
"bytes"
"crypto/md5"
cryptorand "crypto/rand"
"crypto/tls"
"crypto/x509"
"encoding/base64"
"encoding/json"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"math/rand"
mathrand "math/rand"
"net"
"net/http"
"net/url"
"os"
"path/filepath"
"sort"
"strconv"
"strings"
"text/template"
"time"
"github.com/google/uuid"
"github.com/miconda/sipexer/sgsip"
"golang.org/x/net/websocket"
)
const sipexerVersion = "1.0.3"
// exit, return and error code values
const (
SIPExerRetOK = 0
SIPExerRetDone = 1
SIPExerRetErr = -1
// errors
SIPExerErrTemplateRead = -1000
SIPExerErrTemplateData = -1001
SIPExerErrFieldsFileRead = -1020
SIPExerErrFieldsFileFormat = -1021
SIPExerErrFieldsDefaultFormat = -1022
SIPExerErrExpiresValue = -1030
SIPExerErrArgumentsNumber = -1050
SIPExerErrDestinationFormat = -1060
SIPExerErrURIFormat = -1070
SIPExerErrSIPMessageFormat = -1080
SIPExerErrSIPMessageToString = -1081
SIPExerErrSIPMessageFirstLine = -1082
SIPExerErrSIPMessageResponse = -1083
SIPExerErrProtocolUnsuported = -1090
SIPExerErrHeaderAuthGet = -1100
SIPExerErrHeaderAuthParse = -1101
SIPExerErrResolveSrcUDPAddr = -1120
SIPExerErrResolveDstUDPAddr = -1121
SIPExerErrUDPSocket = -1122
SIPExerErrUDPDial = -1123
SIPExerErrUDPWrite = -1124
SIPExerErrUDPSetTimeout = -1125
SIPExerErrUDPICMPTimeout = -1126
SIPExerErrUDPReceiveTimeout = -1127
SIPExerErrResolveSrcTCPAddr = -1140
SIPExerErrResolveDstTCPAddr = -1141
SIPExerErrTCPDial = -1142
SIPExerErrTCPWrite = -1143
SIPExerErrTCPSetWriteTimeout = -1144
SIPExerErrTCPSetReadTimeout = -1145
SIPExerErrTCPRead = -1146
SIPExerErrTLSReadCertificates = -1150
SIPExerErrTLSDial = -1151
SIPExerErrTLSWrite = -1152
SIPExerErrTLSSetReadTimeout = -1153
SIPExerErrTLSRead = -1154
SIPExerErrWSURLFormat = -1160
SIPExerErrWSOrigin = -1161
SIPExerErrWSDial = -1162
SIPExerErrWSWrite = -1163
SIPExerErrWSSetReadTimeout = -1164
SIPExerErrWSRead = -1165
SIPExerErrRandomKey = -1170
)
var templateDefaultText string = `{{.method}} {{.ruri}} SIP/2.0
Via: SIP/2.0/{{.viaproto}} {{.viaaddr}}{{.rport}};branch=z9hG4bKSG.{{.viabranch}}
From: {{if .fromuri}}{{.fromuri}}{{else}}{{if .fname}}"{{.fname}}" {{end}}<sip:{{if .fuser}}{{.fuser}}@{{end}}{{.fdomain}}>{{end}};tag={{.fromtag}}
To: {{if .touri}}{{.touri}}{{else}}{{if .tname}}"{{.tname}}" {{end}}<sip:{{if .tuser}}{{.tuser}}@{{end}}{{.tdomain}}>{{end}}
Call-ID: {{.callid}}
CSeq: {{.cseqnum}} {{.method}}
{{if .subject}}Subject: {{.subject}}{{else}}$rmeol{{end}}
{{if .date}}Date: {{.date}}{{else}}$rmeol{{end}}
{{if .contacturi}}Contact: {{.contacturi}}{{if .contactparams}};{{.contactparams}}{{end}}{{else}}$rmeol{{end}}
{{if .expires}}Expires: {{.expires}}{{else}}$rmeol{{end}}
{{if .useragent}}User-Agent: {{.useragent}}{{else}}$rmeol{{end}}
Content-Length: 0
`
var templateDefaultMessageBody string = `Hello there!{{if .date}} The date is: {{.date}}.{{end}}`
var templateDefaultInviteBody string = `v=0{{.cr}}
o={{.sdpuser}} {{.sdpsessid}} {{.sdpsessversion}} IN {{.sdpaf}} {{.localip}}{{.cr}}
s=call{{.cr}}
c=IN {{.sdpaf}} {{.localip}}{{.cr}}
t=0 0{{.cr}}
m=audio {{.sdprtpport}} RTP/AVP 0 8 101{{.cr}}
a=rtpmap:0 pcmu/8000{{.cr}}
a=rtpmap:8 pcma/8000{{.cr}}
a=rtpmap:101 telephone-event/8000{{.cr}}
a=sendrecv{{.cr}}
`
var templateBody string = ""
var templateDefaultJSONFields string = `{
"method": "OPTIONS",
"fuser": "alice",
"fdomain": "localhost",
"tuser": "bob",
"tdomain": "localhost",
"viabranch": "$uuid",
"rport": ";rport",
"fromtag": "$uuid",
"callid": "$uuid",
"cseqnum": "$randseq",
"date": "$daterfc1123",
"sdpuser": "sipexer",
"sdpsessid": "$timestamp",
"sdpsessversion": "$timestamp",
"sdpaf": "IP4",
"sdprtpport": "$rand(20000,40000)"
}`
var templateFields = map[string]map[string]interface{}{
"FIELDS:EMPTY": {},
}
const (
SIPExerDialogInit = 0
SIPExerDialogStarted = 1
SIPExerDialogEarly = 2
SIPExerDialogAnswered = 3
SIPExerDialogConfirmed = 4
SIPExerDialogCancelled = 5
SIPExerDialogTerminated = 6
)
type SIPExerConnUDP struct {
SrcAddr *net.UDPAddr
DstAddr *net.UDPAddr
Conn *net.UDPConn
}
type SIPExerConnTCP struct {
SrcAddr *net.TCPAddr
DstAddr *net.TCPAddr
Conn *net.TCPConn
}
type SIPExerConnTLS struct {
Conn *tls.Conn
}
type SIPExerConnWSS struct {
Conn *websocket.Conn
}
type SIPExerDialog struct {
Proto string
ProtoId int
LocalAddr string
TargetAddr string
RecvAddr string
AType int
Method string
MethodId int
LocalCSeq int
State int
FirstRequest *sgsip.SGSIPMessage
LastRequest *sgsip.SGSIPMessage
AckRequest *sgsip.SGSIPMessage
LastResponse *sgsip.SGSIPMessage
ConnUDP *SIPExerConnUDP
ConnTCP *SIPExerConnTCP
ConnTLS *SIPExerConnTLS
ConnWSS *SIPExerConnWSS
RecvBuf []byte
RecvN int
TimeoutStep int
TimeoutVal int
Resend bool
SkipAuth bool
}
type paramFieldsType map[string]string
func (m paramFieldsType) String() string {
b := new(bytes.Buffer)
for key, value := range m {
fmt.Fprintf(b, "%s:%s\n", key, value)
}
return b.String()
}
func (m paramFieldsType) Set(value string) error {
z := strings.SplitN(value, ":", 2)
if len(z) > 1 {
m[z[0]] = z[1]
}
return nil
}
var paramFields = make(paramFieldsType)
type headerFieldsType [][2]string
func (m *headerFieldsType) String() string {
b := new(bytes.Buffer)
for _, z := range *m {
fmt.Fprintf(b, "%s:%s\n", z[0], z[1])
}
return b.String()
}
func (m *headerFieldsType) Set(value string) error {
z := strings.SplitN(value, ":", 2)
if len(z) > 1 {
*m = append(*m, [2]string{z[0], z[1]})
}
return nil
}
var headerFields = make(headerFieldsType, 0)
type iVarMapType map[string]int
func (m iVarMapType) String() string {
b := new(bytes.Buffer)
for key, value := range m {
fmt.Fprintf(b, "%s:%d\n", key, value)
}
return b.String()
}
func (m iVarMapType) Set(value string) error {
z := strings.SplitN(value, ":", 2)
if len(z) > 1 {
m[z[0]], _ = strconv.Atoi(z[1])
}
return nil
}
var iVarMap = make(iVarMapType)
// CLIOptions - structure for command line options
type CLIOptions struct {
method string
register bool
message bool
options bool
invite bool
info bool
subscribe bool
publish bool
notify bool
ruri string
ruser string
fuser string
fromuri string
tuser string
fdomain string
tdomain string
touri string
body string
nobody bool
contenttype string
localaddress string
useragent string
template string
templatebody string
templaterun bool
fields string
fieldseval bool
nocrlf bool
flagdefaults bool
templatedefaults bool
timert1 int
timert2 int
timeout int
timeoutwrite int
buffersize int
connectudp bool
af int
setdomains bool
setuser bool
tlsinsecure bool
tlscertificate string
tlskey string
wsorigin string
wsproto string
authuser string
authapassword string
noval string
contacturi string
contactbuild bool
registerparty bool
expires string
raw bool
noparse bool
verbosity int
nagios bool
ha1 bool
coloroutput bool
colormessage bool
sessionwait int
runcount int
helpcommands bool
dnssrvprint bool
lateoffer bool
version bool
}
var cliops = CLIOptions{
method: "",
ruri: "",
fuser: "",
fromuri: "",
tuser: "",
touri: "",
fdomain: "",
tdomain: "",
body: "",
nobody: false,
contenttype: "",
localaddress: "",
useragent: "",
template: "",
templatebody: "",
templaterun: false,
fields: "",
fieldseval: false,
nocrlf: false,
flagdefaults: false,
templatedefaults: false,
timert1: 500,
timert2: 4000,
timeout: 32000,
timeoutwrite: 4000,
buffersize: 32 * 1024,
connectudp: false,
af: 0,
setdomains: false,
setuser: false,
tlsinsecure: false,
tlscertificate: "",
tlskey: "",
wsorigin: "http://127.0.0.1",
wsproto: "sip",
authuser: "",
authapassword: "",
noval: "no",
contacturi: "",
contactbuild: false,
expires: "",
register: false,
message: false,
options: false,
invite: false,
info: false,
subscribe: false,
publish: false,
notify: false,
registerparty: false,
raw: false,
noparse: false,
verbosity: 2,
nagios: false,
ha1: false,
coloroutput: false,
colormessage: false,
sessionwait: 0,
runcount: 1,
dnssrvprint: false,
lateoffer: false,
helpcommands: false,
version: false,
}
func sipexer_help_commands() {
fmt.Fprintf(os.Stderr, " Examples:\n\n")
fmt.Fprintf(os.Stderr, " %s sipserver.com\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, " %s tcp:sipserver.com:5060\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, " %s -sd -xh \"X-My-Header:abcdefgh\" udp:sipserver.com:5060\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, " %s -message -mb 'Hello!' -fuser alice -tuser bob -sd udp:sipserver.com:5060\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, " %s -message -mb 'Hello!' -fuser alice -fv fname:Alice -tuser bob -fv tname:Bob -sd udp:sipserver.com:5060\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, " %s -register -vl 3 -co -com -ex 60 -fuser alice -cb -ap \"abab...\" -ha1 -sd udp:sipserver.com:5060\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, " %s -invite -vl 3 -co -com -fuser alice -tuser bob -cb -ap \"abab...\" -ha1 -sw 10000 -sd -su udp:sipserver.com:5060\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, "\n")
}
func printCLIOptions() {
type CLIOptionDef struct {
Ops []string
Usage string
DefValue string
VType string
}
var items []CLIOptionDef
flag.VisitAll(func(f *flag.Flag) {
var found bool = false
for idx, it := range items {
if it.Usage == f.Usage {
found = true
it.Ops = append(it.Ops, f.Name)
items[idx] = it
}
}
if !found {
items = append(items, CLIOptionDef{
Ops: []string{f.Name},
Usage: f.Usage,
DefValue: f.DefValue,
VType: fmt.Sprintf("%T", f.Value),
})
}
})
sort.Slice(items, func(i, j int) bool { return strings.ToLower(items[i].Ops[0]) < strings.ToLower(items[j].Ops[0]) })
for _, val := range items {
vtype := "val"
if strings.HasSuffix(val.VType, "Value") {
vtype = val.VType[6 : len(val.VType)-5]
} else if strings.HasSuffix(val.VType, "Type") {
vtype = val.VType[6 : len(val.VType)-4]
}
if strings.HasSuffix(vtype, "64") {
vtype = vtype[:len(vtype)-2]
}
for _, opt := range val.Ops {
if vtype == "bool" {
fmt.Printf(" -%s\n", opt)
} else {
fmt.Printf(" -%s %s\n", opt, vtype)
}
}
if vtype != "bool" && len(val.DefValue) > 0 {
fmt.Printf(" %s [default: %s]\n", val.Usage, val.DefValue)
} else {
fmt.Printf(" %s\n", val.Usage)
}
}
}
// initialize application components
func init() {
// command line arguments
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage of %s (v%s):\n\n", filepath.Base(os.Args[0]), sipexerVersion)
fmt.Fprintf(os.Stderr, " %s [options] [target]\n\n", filepath.Base(os.Args[0]))
fmt.Fprintf(os.Stderr, " * target can be: 'host', 'proto:host', 'host:port', 'proto:host:port' or sip-uri\n")
fmt.Fprintf(os.Stderr, " * some options have short and long version\n\n")
printCLIOptions()
fmt.Fprintf(os.Stderr, "\n")
sipexer_help_commands()
SIPExerExit(1)
}
flag.StringVar(&cliops.method, "method", cliops.method, "SIP method")
flag.StringVar(&cliops.method, "mt", cliops.method, "SIP method")
flag.StringVar(&cliops.ruri, "ruri", cliops.ruri, "request uri (r-uri)")
flag.StringVar(&cliops.ruri, "ru", cliops.ruri, "request uri (r-uri)")
flag.StringVar(&cliops.ruser, "ruser", cliops.ruser, "request uri username for destination proxy address")
flag.StringVar(&cliops.ruser, "rn", cliops.ruser, "request uri username for destination proxy address")
flag.StringVar(&cliops.fuser, "fuser", cliops.fuser, "From header URI username")
flag.StringVar(&cliops.fuser, "fu", cliops.fuser, "From header URI username")
flag.StringVar(&cliops.tuser, "tuser", cliops.tuser, "To header URI username")
flag.StringVar(&cliops.tuser, "tu", cliops.tuser, "To header URI username")
flag.StringVar(&cliops.fdomain, "fdomain", cliops.fdomain, "From header URI domain")
flag.StringVar(&cliops.fdomain, "fd", cliops.fdomain, "From header URI domain")
flag.StringVar(&cliops.fromuri, "from-uri", cliops.fromuri, "From header URI")
flag.StringVar(&cliops.tdomain, "tdomain", cliops.tdomain, "To header URI domain")
flag.StringVar(&cliops.tdomain, "td", cliops.tdomain, "To header URI domain")
flag.StringVar(&cliops.touri, "to-uri", cliops.touri, "To header URI")
flag.StringVar(&cliops.template, "template-file", cliops.template, "path to template file")
flag.StringVar(&cliops.template, "tf", cliops.template, "path to template file")
flag.StringVar(&cliops.templatebody, "template-body-file", cliops.templatebody, "path to template file for body")
flag.StringVar(&cliops.templatebody, "tbf", cliops.templatebody, "path to template file for body")
flag.StringVar(&cliops.fields, "fields-file", cliops.fields, "path to the json fields file")
flag.StringVar(&cliops.fields, "ff", cliops.fields, "path to the json fields file")
flag.StringVar(&cliops.localaddress, "laddr", cliops.localaddress, "local address (`ip:port` or `:port`)")
flag.StringVar(&cliops.useragent, "user-agent", cliops.useragent, "user agent value")
flag.StringVar(&cliops.useragent, "ua", cliops.useragent, "user agent value")
flag.StringVar(&cliops.tlscertificate, "tls-certificate", cliops.tlscertificate, "path to TLS public certificate")
flag.StringVar(&cliops.tlscertificate, "tc", cliops.tlscertificate, "path to TLS public certificate")
flag.StringVar(&cliops.tlskey, "tls-key", cliops.tlskey, "path to TLS private key")
flag.StringVar(&cliops.tlskey, "tk", cliops.tlskey, "path to TLS private key")
flag.StringVar(&cliops.body, "message-body", cliops.body, "message body")
flag.StringVar(&cliops.body, "mb", cliops.body, "message body")
flag.StringVar(&cliops.contenttype, "content-type", cliops.contenttype, "content type")
flag.StringVar(&cliops.contenttype, "ct", cliops.contenttype, "content type")
flag.StringVar(&cliops.wsorigin, "websocket-origin", cliops.wsorigin, "websocket origin http url")
flag.StringVar(&cliops.wsorigin, "wso", cliops.wsorigin, "websocket origin http url")
flag.StringVar(&cliops.wsproto, "websocket-proto", cliops.wsproto, "websocket sub-protocol")
flag.StringVar(&cliops.wsproto, "wsp", cliops.wsproto, "websocket sub-protocol")
flag.StringVar(&cliops.authuser, "auth-user", cliops.authuser, "authentication user")
flag.StringVar(&cliops.authuser, "au", cliops.authuser, "authentication user")
flag.StringVar(&cliops.authapassword, "auth-password", cliops.authapassword, "authentication password")
flag.StringVar(&cliops.authapassword, "ap", cliops.authapassword, "authentication password")
flag.StringVar(&cliops.noval, "no-val", cliops.noval, "no value string")
flag.StringVar(&cliops.contacturi, "contact-uri", cliops.contacturi, "contact uri")
flag.StringVar(&cliops.contacturi, "cu", cliops.contacturi, "contact uri")
flag.StringVar(&cliops.expires, "expires", cliops.expires, "expires header value")
flag.StringVar(&cliops.expires, "ex", cliops.expires, "expires header value")
flag.BoolVar(&cliops.fieldseval, "fields-eval", cliops.fieldseval, "evaluate expression in fields file")
flag.BoolVar(&cliops.fieldseval, "fe", cliops.fieldseval, "evaluate expression in fields file")
flag.BoolVar(&cliops.nocrlf, "no-crlf", cliops.nocrlf, "do not replace '\\n' with '\\r\\n' inside the data to be sent (true|false)")
flag.BoolVar(&cliops.flagdefaults, "flag-defaults", cliops.flagdefaults, "print flag (cli param) default values")
flag.BoolVar(&cliops.flagdefaults, "fvd", cliops.flagdefaults, "print flag (cli param) default values")
flag.BoolVar(&cliops.templatedefaults, "template-defaults", cliops.templatedefaults, "print default (internal) template data")
flag.BoolVar(&cliops.templatedefaults, "tpd", cliops.templatedefaults, "print default (internal) template data")
flag.BoolVar(&cliops.templaterun, "template-run", cliops.templaterun, "run template execution and print the result")
flag.BoolVar(&cliops.templaterun, "tpr", cliops.templaterun, "run template execution and print the result")
flag.BoolVar(&cliops.connectudp, "connect-udp", cliops.connectudp, "attempt first a connect for UDP (dial ICMP connect)")
flag.BoolVar(&cliops.setdomains, "set-domains", cliops.setdomains, "set From/To domains based on R-URI")
flag.BoolVar(&cliops.setdomains, "sd", cliops.setdomains, "set From/To domains based on R-URI")
flag.BoolVar(&cliops.setuser, "set-user", cliops.setuser, "set R-URI user to To-URI user for destination proxy address")
flag.BoolVar(&cliops.setuser, "su", cliops.setuser, "set R-URI user to To-URI user for destination proxy address")
flag.BoolVar(&cliops.tlsinsecure, "tls-insecure", cliops.tlsinsecure, "skip tls certificate validation (true|false)")
flag.BoolVar(&cliops.tlsinsecure, "ti", cliops.tlsinsecure, "skip tls certificate validation (true|false)")
flag.BoolVar(&cliops.register, "register", cliops.register, "set method to REGISTER")
flag.BoolVar(&cliops.register, "r", cliops.register, "set method to REGISTER")
flag.BoolVar(&cliops.options, "options", cliops.options, "set method to OPTIONS")
flag.BoolVar(&cliops.options, "o", cliops.options, "set method to OPTIONS")
flag.BoolVar(&cliops.message, "message", cliops.message, "set method to MESSAGE")
flag.BoolVar(&cliops.message, "m", cliops.message, "set method to MESSAGE")
flag.BoolVar(&cliops.invite, "invite", cliops.invite, "set method to INVITE")
flag.BoolVar(&cliops.invite, "i", cliops.invite, "set method to INVITE")
flag.BoolVar(&cliops.info, "info", cliops.info, "set method to INFO")
flag.BoolVar(&cliops.publish, "publish", cliops.publish, "set method to PUBLISH")
flag.BoolVar(&cliops.subscribe, "subscribe", cliops.subscribe, "set method to SUBSCRIBE")
flag.BoolVar(&cliops.notify, "notify", cliops.notify, "set method to NOTIFY")
flag.BoolVar(&cliops.contactbuild, "contact-build", cliops.contactbuild, "build contact header based on local address")
flag.BoolVar(&cliops.contactbuild, "cb", cliops.contactbuild, "build contact header based on local address")
flag.BoolVar(&cliops.registerparty, "register-party", cliops.registerparty, "register a third party To user")
flag.BoolVar(&cliops.raw, "raw", cliops.registerparty, "sent raw template content (no evaluation)")
flag.BoolVar(&cliops.noparse, "no-parse", cliops.noparse, "no SIP message parsing of input template result")
flag.BoolVar(&cliops.nagios, "nagios", cliops.nagios, "nagios plugin exit codes")
flag.BoolVar(&cliops.ha1, "ha1", cliops.ha1, "authentication password is in HA1 format")
flag.BoolVar(&cliops.nobody, "no-body", cliops.nobody, "no body for message or invite")
flag.BoolVar(&cliops.coloroutput, "color-output", cliops.coloroutput, "color output")
flag.BoolVar(&cliops.coloroutput, "co", cliops.coloroutput, "color output")
flag.BoolVar(&cliops.colormessage, "color-message", cliops.colormessage, "color SIP message output")
flag.BoolVar(&cliops.colormessage, "com", cliops.colormessage, "color SIP message output")
flag.IntVar(&cliops.timert1, "timer-t1", cliops.timert1, "value of t1 timer (milliseconds)")
flag.IntVar(&cliops.timert2, "timer-t2", cliops.timert2, "value of t2 timer (milliseconds)")
flag.IntVar(&cliops.timeoutwrite, "timeout-write", cliops.timeoutwrite, "timeout to write data to socket (milliseconds)")
flag.IntVar(&cliops.timeout, "timeout", cliops.timeout, "timeout waiting to receice data (milliseconds)")
flag.IntVar(&cliops.af, "af", cliops.af, "enforce address family for socket (4 or 6)")
flag.IntVar(&cliops.verbosity, "verbosity", cliops.verbosity, "verbosity level (0..3)")
flag.IntVar(&cliops.verbosity, "vl", cliops.verbosity, "verbosity level (0..3)")
flag.IntVar(&cliops.sessionwait, "sessionwait", cliops.sessionwait, "time in millisecons to wait for a session")
flag.IntVar(&cliops.sessionwait, "sw", cliops.sessionwait, "time in millisecons to wait for a session")
flag.IntVar(&cliops.runcount, "run-count", cliops.runcount, "how many times to recreate and send the message")
flag.IntVar(&cliops.runcount, "rc", cliops.runcount, "how many times to recreate and send the message")
flag.Var(¶mFields, "field-val", "field value in format 'name:value' (can be provided many times)")
flag.Var(¶mFields, "fv", "field value in format 'name:value' (can be provided many times)")
flag.Var(&headerFields, "extra-header", "extra header in format 'name:body' (can be provided many times)")
flag.Var(&headerFields, "xh", "extra header in format 'name:body' (can be provided many times)")
flag.Var(&iVarMap, "int-val", "integer value in format 'name:value' (can be provided many times)")
flag.Var(&iVarMap, "iv", "integer value in format 'name:value' (can be provided many times)")
flag.BoolVar(&cliops.dnssrvprint, "dns-srv-print", cliops.dnssrvprint, "print DNS SRV records")
flag.BoolVar(&cliops.lateoffer, "late-offer", cliops.lateoffer, "enable SDP late offer mode")
flag.BoolVar(&cliops.helpcommands, "help-commands", cliops.helpcommands, "print help with command examples")
flag.BoolVar(&cliops.helpcommands, "hc", cliops.helpcommands, "print help with command examples")
flag.BoolVar(&cliops.version, "version", cliops.version, "print version")
flag.BoolVar(&cliops.version, "v", cliops.version, "print version")
rand.Seed(time.Now().UnixNano())
}
// sipexer application
func main() {
var err error
var ok bool
var tret int
flag.Parse()
fmt.Printf("\n")
if cliops.version {
fmt.Printf("%s v%s\n\n", filepath.Base(os.Args[0]), sipexerVersion)
SIPExerExit(SIPExerRetDone)
}
if cliops.helpcommands {
sipexer_help_commands()
SIPExerExit(SIPExerRetDone)
}
if cliops.templatedefaults {
fmt.Printf(" - Default SIP request template:\n\n")
fmt.Println(templateDefaultText)
fmt.Printf("\n - Default field values:\n\n")
fmt.Println(templateDefaultJSONFields)
fmt.Printf("\n - Default SIP MESSAGE body template:\n\n")
fmt.Println(templateDefaultMessageBody)
fmt.Printf("\n - Default SIP INVITE body template:\n\n")
fmt.Println(templateDefaultInviteBody)
SIPExerExit(SIPExerRetDone)
}
if cliops.flagdefaults {
flag.PrintDefaults()
SIPExerExit(SIPExerRetDone)
}
// enable file name and line numbers in logging
log.SetFlags(log.LstdFlags | log.Lshortfile)
if cliops.dnssrvprint {
if len(flag.Args()) < 1 {
SIPExerPrintf(SIPExerLogError, "domain argument not provided\n")
SIPExerExit(SIPExerRetErr)
}
var dqProtos []string
if len(flag.Args()) == 1 {
dqProtos = append(dqProtos, "udp", "tcp", "tls", "sctp")
} else {
dqProtos = append(dqProtos, flag.Arg(0))
}
for _, proto := range dqProtos {
cname, srvs, err := net.LookupSRV("sip", proto, flag.Arg(len(flag.Args())-1))
if err != nil {
SIPExerPrintf(SIPExerLogError, "\nerror: %v\n\n", err)
} else {
fmt.Printf("cname: %s\n", cname)
for _, srv := range srvs {
fmt.Printf("_sip.%s.%s => %v:%v (%d:%d)\n", proto, flag.Arg(len(flag.Args())-1),
srv.Target, srv.Port, srv.Priority, srv.Weight)
}
}
}
SIPExerExit(SIPExerRetDone)
}
var tplstr = ""
if len(cliops.template) > 0 {
tpldata, err1 := ioutil.ReadFile(cliops.template)
if err1 != nil {
SIPExerPrintf(SIPExerLogError, "error: %v\n", err1)
SIPExerExit(SIPExerErrTemplateRead)
}
tplstr = string(tpldata)
} else if len(templateDefaultText) > 0 {
tplstr = templateDefaultText
} else {
SIPExerPrintf(SIPExerLogError, "missing data template file ('-tf' or '--template' parameter must be provided)\n")
SIPExerExit(SIPExerErrTemplateData)
}
if len(cliops.templatebody) > 0 {
tpldata, err1 := ioutil.ReadFile(cliops.templatebody)
if err1 != nil {
SIPExerPrintf(SIPExerLogError, "error: %v\n", err1)
SIPExerExit(SIPExerErrTemplateRead)
}
templateBody = string(tpldata)
}
if cliops.runcount > 1 && len(cliops.localaddress) > 0 {
SIPExerPrintf(SIPExerLogError, "local address parameter is ignored when run count is greater than 1\n")
cliops.localaddress = ""
}
for r := 0; r < cliops.runcount; r++ {
tplfields := make(map[string]interface{})
SIPExerPrepareTemplateFields(tplfields)
var wsurlp *url.URL = nil
dstAddr := "udp:127.0.0.1:5060"
if len(flag.Args()) > 0 {
if len(flag.Args()) == 1 {
dstAddr = flag.Arg(0)
if strings.HasPrefix(dstAddr, "wss://") ||
strings.HasPrefix(dstAddr, "ws://") {
wsurlp, err = url.Parse(dstAddr)
if err != nil {
SIPExerPrintf(SIPExerLogError, "invalid websocket target: %v\n", dstAddr)
SIPExerExit(SIPExerErrWSURLFormat)
}
if strings.HasPrefix(dstAddr, "wss://") {
dstAddr = "wss:" + wsurlp.Host
} else {
dstAddr = "ws:" + wsurlp.Host
}
}
} else if len(flag.Args()) == 2 {
dstAddr = "udp:" + flag.Arg(0) + ":" + flag.Arg(1)
} else if len(flag.Args()) == 3 {
dstAddr = flag.Arg(0) + ":" + flag.Arg(1) + ":" + flag.Arg(2)
} else {
SIPExerPrintf(SIPExerLogError, "invalid number of arguments : %d\n", len(flag.Args()))
SIPExerExit(SIPExerErrArgumentsNumber)
}
}
var dstSockAddr = sgsip.SGSIPSocketAddress{}
var dstURI = sgsip.SGSIPURI{}
if sgsip.SGSIPParseSocketAddress(dstAddr, &dstSockAddr) != sgsip.SGSIPRetOK {
if sgsip.SGSIPParseURI(dstAddr, &dstURI) != sgsip.SGSIPRetOK {
SIPExerPrintf(SIPExerLogError, "invalid destination address: %s\n", dstAddr)
SIPExerExit(SIPExerErrDestinationFormat)
} else {
SIPExerPrintf(SIPExerLogDebug, "parsed SIP URI argument (%+v)\n", dstURI)
sgsip.SGSIPURIToSocketAddress(&dstURI, &dstSockAddr)
}
} else {
SIPExerPrintf(SIPExerLogDebug, "parsed socket address argument (%+v)\n", dstSockAddr)
if cliops.setuser {
_, ok = tplfields["tuser"]
if ok {
sgsip.SGSocketAddressToSIPURI(&dstSockAddr, fmt.Sprint(tplfields["tuser"]), 0, &dstURI)
} else {
sgsip.SGSocketAddressToSIPURI(&dstSockAddr, cliops.ruser, 0, &dstURI)
}
} else {
sgsip.SGSocketAddressToSIPURI(&dstSockAddr, cliops.ruser, 0, &dstURI)
}
}
if len(cliops.ruri) > 0 {
tplfields["ruri"] = cliops.ruri
} else {
_, ok = tplfields["ruri"]
if !ok {
tplfields["ruri"] = dstURI.Val
}
}
if cliops.setdomains {
var rURI = sgsip.SGSIPURI{}
if sgsip.SGSIPParseURI(fmt.Sprint(tplfields["ruri"]), &rURI) != sgsip.SGSIPRetOK {
SIPExerPrintf(SIPExerLogError, "invalid ruri: %v\n", tplfields["ruri"])
SIPExerExit(SIPExerErrURIFormat)
}
tplfields["fdomain"] = rURI.Addr
tplfields["tdomain"] = rURI.Addr
}
if cliops.templaterun {
lTAddr := ""
if len(cliops.localaddress) > 0 {
lTAddr = cliops.localaddress
} else {
lTAddr = "127.0.0.1:55060"
}
var msgVal sgsip.SGSIPMessage = sgsip.SGSIPMessage{}
var smsg string = ""
tret = SIPExerPrepareMessage(tplstr, tplfields, dstSockAddr.Proto, lTAddr, dstSockAddr.Addr+":"+dstSockAddr.Port, &msgVal)
if tret != 0 {
SIPExerExit(tret)
}
smsg = msgVal.Data
msgVal = sgsip.SGSIPMessage{}
if sgsip.SGSIPParseMessage(smsg, &msgVal) != sgsip.SGSIPRetOK {
SIPExerPrintf(SIPExerLogError, "failed to parse sip message\n%+v\n\n", smsg)
SIPExerExit(SIPExerErrSIPMessageFormat)
}
if cliops.verbosity > 0 {
fmt.Printf("%+v\n\n", smsg)
fmt.Printf("%+v\n\n", msgVal)
}
if cliops.runcount > 1 {
tret = SIPExerRetDone
continue
}
SIPExerExit(SIPExerRetDone)
}
if (dstSockAddr.ProtoId != sgsip.ProtoUDP) && (dstSockAddr.ProtoId != sgsip.ProtoTCP) &&
(dstSockAddr.ProtoId != sgsip.ProtoTLS) && (dstSockAddr.ProtoId != sgsip.ProtoWSS) {
SIPExerPrintf(SIPExerLogError, "transport protocol not supported yet for target %s\n", dstAddr)
SIPExerExit(SIPExerErrProtocolUnsuported)
}
tchan := make(chan int, 1)
if dstSockAddr.ProtoId == sgsip.ProtoTCP {
go SIPExerSendTCP(dstSockAddr, tplstr, tplfields, tchan)
} else if dstSockAddr.ProtoId == sgsip.ProtoTLS {
go SIPExerSendTLS(dstSockAddr, tplstr, tplfields, tchan)
} else if dstSockAddr.ProtoId == sgsip.ProtoWSS {
go SIPExerSendWSS(dstSockAddr, wsurlp, tplstr, tplfields, tchan)
} else {
go SIPExerSendUDP(dstSockAddr, tplstr, tplfields, tchan)
}
tret = <-tchan
close(tchan)
}
SIPExerExit(tret)
}
func SIPExerExit(ret int) {
var nret int
nret = ret
if cliops.nagios {
if ret == SIPExerRetOK || ret == SIPExerRetDone || (ret >= 200 && ret <= 299) {
nret = 0
} else if ret >= 400 && ret <= 499 {
nret = 1
} else {
nret = 3
}
}
if ret != nret {
SIPExerPrintf(SIPExerLogDebug, "initial return code: %d\n\n", ret)
}
SIPExerPrintf(SIPExerLogDebug, "return code: %d\n\n", nret)
os.Exit(nret)
}
func SIPExerPrepareTemplateFields(tplfields map[string]interface{}) int {
var err error
var ival int
var ok bool
if len(cliops.fields) > 0 {
fieldsdata, err1 := ioutil.ReadFile(cliops.fields)
if err1 != nil {
SIPExerPrintf(SIPExerLogError, "error: %v\n", err1)
SIPExerExit(SIPExerErrFieldsFileRead)
}
err = json.Unmarshal(fieldsdata, &tplfields)
if err != nil {
SIPExerPrintf(SIPExerLogError, "error: %v\n", err)
SIPExerExit(SIPExerErrFieldsFileFormat)
}
} else if len(templateDefaultJSONFields) > 0 {
err = json.Unmarshal([]byte(templateDefaultJSONFields), &tplfields)
if err != nil {
SIPExerPrintf(SIPExerLogError, "error: %v\n", err)
SIPExerExit(SIPExerErrFieldsDefaultFormat)
}
cliops.fieldseval = true
} else {
tplfields = templateFields["FIELDS:EMPTY"]
}
if cliops.fieldseval {
for k := range tplfields {
switch tplfields[k].(type) {
case string:
if tplfields[k] == "$uuid" {
tplfields[k] = uuid.New().String()
} else if tplfields[k] == "$randseq" {
tplfields[k] = strconv.Itoa(1 + mathrand.Intn(999999))
} else if tplfields[k] == "$datefull" {
tplfields[k] = time.Now().String()
} else if tplfields[k] == "$daterfc1123" {
tplfields[k] = time.Now().Format(time.RFC1123)
} else if tplfields[k] == "$dateunix" {
tplfields[k] = time.Now().Format(time.UnixDate)
} else if tplfields[k] == "$dateansic" {
tplfields[k] = time.Now().Format(time.ANSIC)
} else if tplfields[k] == "$timestamp" {
tplfields[k] = strconv.FormatInt(time.Now().Unix(), 10)
} else if tplfields[k] == "$pid" {
tplfields[k] = strconv.Itoa(os.Getpid())
} else if tplfields[k] == "$cr" {
tplfields[k] = "\r"
} else if tplfields[k] == "$lf" {
tplfields[k] = "\n"
} else {
sVal := fmt.Sprint(tplfields[k])
if strings.Index(sVal, "$rand(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[6 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
if len(sArr) == 1 {
nVal, _ := strconv.Atoi(sArr[0])
tplfields[k] = strconv.Itoa(mathrand.Intn(nVal))
} else {
nValA, _ := strconv.Atoi(sArr[0])
nValB, _ := strconv.Atoi(sArr[1])
tplfields[k] = strconv.Itoa(nValA + mathrand.Intn(nValB-nValA))
}
} else if strings.Index(sVal, "$randstr(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[9 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
if len(sArr) == 1 {
nVal, _ := strconv.Atoi(sArr[0])
tplfields[k] = SIPExerRandAlphaString(nVal)
} else {
nValA, _ := strconv.Atoi(sArr[0])
nValB, _ := strconv.Atoi(sArr[1])
tplfields[k] = SIPExerRandAlphaString(nValA + mathrand.Intn(nValB-nValA))
}
} else if strings.Index(sVal, "$randan(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[9 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
if len(sArr) == 1 {
nVal, _ := strconv.Atoi(sArr[0])
tplfields[k] = SIPExerRandAlphaNumString(nVal)
} else {
nValA, _ := strconv.Atoi(sArr[0])
nValB, _ := strconv.Atoi(sArr[1])
tplfields[k] = SIPExerRandAlphaNumString(nValA + mathrand.Intn(nValB-nValA))
}
} else if strings.Index(sVal, "$randnum(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[9 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
if len(sArr) == 1 {
nVal, _ := strconv.Atoi(sArr[0])
tplfields[k] = SIPExerRandNumString(nVal)
} else {
nValA, _ := strconv.Atoi(sArr[0])
nValB, _ := strconv.Atoi(sArr[1])
tplfields[k] = SIPExerRandNumString(nValA + mathrand.Intn(nValB-nValA))
}
} else if strings.Index(sVal, "$randhex(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[9 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
if len(sArr) == 1 {
nVal, _ := strconv.Atoi(sArr[0])
tplfields[k] = SIPExerRandHexString(nVal)
} else {
nValA, _ := strconv.Atoi(sArr[0])
nValB, _ := strconv.Atoi(sArr[1])
tplfields[k] = SIPExerRandHexString(nValA + mathrand.Intn(nValB-nValA))
}
} else if strings.Index(sVal, "$env(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
eVal, ok := os.LookupEnv(sVal[5 : len(sVal)-1])
if ok {
tplfields[k] = eVal
}
} else if strings.Index(sVal, "$add(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[5 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
eVal, ok := iVarMap[sArr[0]]
if !ok {
eVal = 0
}
aVal := 1
if len(sArr) == 2 {
aVal, _ = strconv.Atoi(sArr[1])
}
eVal += aVal
iVarMap[sArr[0]] = eVal
tplfields[k] = strconv.Itoa(eVal)
} else if strings.Index(sVal, "$sub(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[5 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
eVal, ok := iVarMap[sArr[0]]
if !ok {
eVal = 0
}
aVal := 1
if len(sArr) == 2 {
aVal, _ = strconv.Atoi(sArr[1])
}
eVal -= aVal
iVarMap[sArr[0]] = eVal
tplfields[k] = strconv.Itoa(eVal)
} else if strings.Index(sVal, "$inc(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[5 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
eVal, ok := iVarMap[sArr[0]]
if !ok {
if len(sArr) == 1 {
eVal = 0
} else {
eVal, _ = strconv.Atoi(sArr[1])
}
}
eVal++
iVarMap[sArr[0]] = eVal
tplfields[k] = strconv.Itoa(eVal)
} else if strings.Index(sVal, "$dec(") == 0 && strings.LastIndex(sVal, ")") == len(sVal)-1 {
sVal = sVal[5 : len(sVal)-1]
sArr := strings.Split(sVal, ",")
eVal, ok := iVarMap[sArr[0]]
if !ok {
if len(sArr) == 1 {
eVal = 1000000
} else {
eVal, _ = strconv.Atoi(sArr[1])
}