diff --git a/.env b/.env index f2dc968..8183cce 100644 --- a/.env +++ b/.env @@ -1 +1,6 @@ +# app starts on this port PORT=80 +# mode can be "native" or "cloudflare" +# if you use cloudflare mode then the app answers with a value of HTTP header "CF-Connecting-IP" +# https://support.cloudflare.com/hc/en-us/articles/200170986-How-does-Cloudflare-handle-HTTP-Request-headers- +MODE=native diff --git a/README.md b/README.md index 758c014..cc91327 100644 --- a/README.md +++ b/README.md @@ -16,19 +16,25 @@ If you want to run your own instance of the app. Create `.env` file with the following content: ```sh +# app starts on this port PORT=80 +# mode can be "native" or "cloudflare" +# if you use cloudflare mode then the app answers with a value of HTTP header "CF-Connecting-IP" +# https://support.cloudflare.com/hc/en-us/articles/200170986-How-does-Cloudflare-handle-HTTP-Request-headers- +MODE=native ``` Create `docker-compose.yml` file: ```yaml -version: '2' +version: '2.4' services: ntwrk: - image: mxssl/ntwrk:0.0.5 + image: mxssl/ntwrk:0.1.0 env_file: .env restart: always + # for native mode you need to use host network mode network_mode: host ``` diff --git a/docker-compose.yml b/docker-compose.yml index 406a4cd..cc1c44c 100644 --- a/docker-compose.yml +++ b/docker-compose.yml @@ -1,4 +1,4 @@ -version: '2' +version: '2.4' services: ntwrk: diff --git a/go.mod b/go.mod index 86a0c3d..3936407 100644 --- a/go.mod +++ b/go.mod @@ -4,7 +4,6 @@ go 1.13 require ( github.com/joho/godotenv v1.3.0 - github.com/konsorten/go-windows-terminal-sequences v1.0.3 // indirect github.com/sirupsen/logrus v1.7.0 - golang.org/x/sys v0.0.0-20201016160150-f659759dc4ca // indirect + golang.org/x/sys v0.0.0-20201024232916-9f70ab9862d5 // indirect ) diff --git a/go.sum b/go.sum index a1ecc77..c672e6b 100644 --- a/go.sum +++ b/go.sum @@ -2,20 +2,12 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc= github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg= -github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8= -github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= -github.com/sirupsen/logrus v1.6.0 h1:UBcNElsrwanuuMsnGSlYmtmgbb23qDR5dG+6X6Oo89I= -github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88= github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM= github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0= github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w= github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs= -golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc= -golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9 h1:YTzHMGlqJu67/uEo1lBv0n3wBXhXNeUbB1XfN2vmTm0= -golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= -golang.org/x/sys v0.0.0-20201016160150-f659759dc4ca h1:mLWBs1i4Qi5cHWGEtn2jieJQ2qtwV/gT0A2zLrmzaoE= -golang.org/x/sys v0.0.0-20201016160150-f659759dc4ca/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/sys v0.0.0-20201024232916-9f70ab9862d5 h1:iCaAy5bMeEvwANu3YnJfWwI0kWAGkEa2RXPdweI/ysk= +golang.org/x/sys v0.0.0-20201024232916-9f70ab9862d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= diff --git a/main.go b/main.go index 6833e60..996637d 100644 --- a/main.go +++ b/main.go @@ -58,11 +58,18 @@ func main() { } func rootHandler(w http.ResponseWriter, r *http.Request) { - re := regexp.MustCompile(`((?:\d{1,3}.){3}\d{1,3}):\d+|\[(.+)\]:\d+`) - for _, ip := range re.FindStringSubmatch(r.RemoteAddr)[1:] { - if ip != "" { - fmt.Fprintf(w, ip+"\n") - log.Printf("Received ip request from: %s", ip) + if os.Getenv("MODE") == "native" { + re := regexp.MustCompile(`((?:\d{1,3}.){3}\d{1,3}):\d+|\[(.+)\]:\d+`) + for _, ip := range re.FindStringSubmatch(r.RemoteAddr)[1:] { + if ip != "" { + fmt.Fprintf(w, ip+"\n") + log.Printf("Received ip request from: %s", ip) + } } } + if os.Getenv("MODE") == "cloudflare" { + ip := r.Header.Get("CF-Connecting-IP") + fmt.Fprintf(w, ip+"\n") + log.Printf("Received ip request from: %s", ip) + } } diff --git a/vendor/golang.org/x/sys/unix/mkerrors.sh b/vendor/golang.org/x/sys/unix/mkerrors.sh index 467c03d..2363df8 100644 --- a/vendor/golang.org/x/sys/unix/mkerrors.sh +++ b/vendor/golang.org/x/sys/unix/mkerrors.sh @@ -59,6 +59,7 @@ includes_Darwin=' #include #include #include +#include #include #include #include @@ -519,6 +520,7 @@ ccflags="$@" $2 ~ /^CAP_/ || $2 ~ /^CP_/ || $2 ~ /^CPUSTATES$/ || + $2 ~ /^CTLIOCGINFO$/ || $2 ~ /^ALG_/ || $2 ~ /^FI(CLONE|DEDUPERANGE)/ || $2 ~ /^FS_(POLICY_FLAGS|KEY_DESC|ENCRYPTION_MODE|[A-Z0-9_]+_KEY_SIZE)/ || diff --git a/vendor/golang.org/x/sys/unix/syscall.go b/vendor/golang.org/x/sys/unix/syscall.go index fd4ee8e..ab75ef9 100644 --- a/vendor/golang.org/x/sys/unix/syscall.go +++ b/vendor/golang.org/x/sys/unix/syscall.go @@ -24,7 +24,13 @@ // holds a value of type syscall.Errno. package unix // import "golang.org/x/sys/unix" -import "strings" +import ( + "bytes" + "strings" + "unsafe" + + "golang.org/x/sys/internal/unsafeheader" +) // ByteSliceFromString returns a NUL-terminated slice of bytes // containing the text of s. If s contains a NUL byte at any @@ -49,5 +55,40 @@ func BytePtrFromString(s string) (*byte, error) { return &a[0], nil } +// ByteSliceToString returns a string form of the text represented by the slice s, with a terminating NUL and any +// bytes after the NUL removed. +func ByteSliceToString(s []byte) string { + if i := bytes.IndexByte(s, 0); i != -1 { + s = s[:i] + } + return string(s) +} + +// BytePtrToString takes a pointer to a sequence of text and returns the corresponding string. +// If the pointer is nil, it returns the empty string. It assumes that the text sequence is terminated +// at a zero byte; if the zero byte is not present, the program may crash. +func BytePtrToString(p *byte) string { + if p == nil { + return "" + } + if *p == 0 { + return "" + } + + // Find NUL terminator. + n := 0 + for ptr := unsafe.Pointer(p); *(*byte)(ptr) != 0; n++ { + ptr = unsafe.Pointer(uintptr(ptr) + 1) + } + + var s []byte + h := (*unsafeheader.Slice)(unsafe.Pointer(&s)) + h.Data = unsafe.Pointer(p) + h.Len = n + h.Cap = n + + return string(s) +} + // Single-word zero for use when we need a valid pointer to 0 bytes. var _zero uintptr diff --git a/vendor/golang.org/x/sys/unix/syscall_aix.go b/vendor/golang.org/x/sys/unix/syscall_aix.go index 9ad8a0d..4408153 100644 --- a/vendor/golang.org/x/sys/unix/syscall_aix.go +++ b/vendor/golang.org/x/sys/unix/syscall_aix.go @@ -19,6 +19,22 @@ import "unsafe" * Wrapped */ +func Access(path string, mode uint32) (err error) { + return Faccessat(AT_FDCWD, path, mode, 0) +} + +func Chmod(path string, mode uint32) (err error) { + return Fchmodat(AT_FDCWD, path, mode, 0) +} + +func Chown(path string, uid int, gid int) (err error) { + return Fchownat(AT_FDCWD, path, uid, gid, 0) +} + +func Creat(path string, mode uint32) (fd int, err error) { + return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode) +} + //sys utimes(path string, times *[2]Timeval) (err error) func Utimes(path string, tv []Timeval) error { if len(tv) != 2 { diff --git a/vendor/golang.org/x/sys/unix/syscall_darwin.go b/vendor/golang.org/x/sys/unix/syscall_darwin.go index 21b8092..5b0e831 100644 --- a/vendor/golang.org/x/sys/unix/syscall_darwin.go +++ b/vendor/golang.org/x/sys/unix/syscall_darwin.go @@ -13,6 +13,7 @@ package unix import ( + "runtime" "syscall" "unsafe" ) @@ -257,6 +258,12 @@ func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(sig //sys ioctl(fd int, req uint, arg uintptr) (err error) +func IoctlCtlInfo(fd int, ctlInfo *CtlInfo) error { + err := ioctl(fd, CTLIOCGINFO, uintptr(unsafe.Pointer(ctlInfo))) + runtime.KeepAlive(ctlInfo) + return err +} + //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS_SYSCTL func Uname(uname *Utsname) error { diff --git a/vendor/golang.org/x/sys/unix/zerrors_darwin_386.go b/vendor/golang.org/x/sys/unix/zerrors_darwin_386.go index 6f33359..c8f9f7a 100644 --- a/vendor/golang.org/x/sys/unix/zerrors_darwin_386.go +++ b/vendor/golang.org/x/sys/unix/zerrors_darwin_386.go @@ -251,6 +251,7 @@ const ( CSTOP = 0x13 CSTOPB = 0x400 CSUSP = 0x1a + CTLIOCGINFO = 0xc0644e03 CTL_HW = 0x6 CTL_KERN = 0x1 CTL_MAXNAME = 0xc diff --git a/vendor/golang.org/x/sys/unix/zerrors_darwin_amd64.go b/vendor/golang.org/x/sys/unix/zerrors_darwin_amd64.go index db767eb..7180064 100644 --- a/vendor/golang.org/x/sys/unix/zerrors_darwin_amd64.go +++ b/vendor/golang.org/x/sys/unix/zerrors_darwin_amd64.go @@ -251,6 +251,7 @@ const ( CSTOP = 0x13 CSTOPB = 0x400 CSUSP = 0x1a + CTLIOCGINFO = 0xc0644e03 CTL_HW = 0x6 CTL_KERN = 0x1 CTL_MAXNAME = 0xc diff --git a/vendor/golang.org/x/sys/unix/zerrors_darwin_arm.go b/vendor/golang.org/x/sys/unix/zerrors_darwin_arm.go index ddc5d00..3b9ca75 100644 --- a/vendor/golang.org/x/sys/unix/zerrors_darwin_arm.go +++ b/vendor/golang.org/x/sys/unix/zerrors_darwin_arm.go @@ -251,6 +251,7 @@ const ( CSTOP = 0x13 CSTOPB = 0x400 CSUSP = 0x1a + CTLIOCGINFO = 0xc0644e03 CTL_HW = 0x6 CTL_KERN = 0x1 CTL_MAXNAME = 0xc diff --git a/vendor/golang.org/x/sys/unix/zerrors_darwin_arm64.go b/vendor/golang.org/x/sys/unix/zerrors_darwin_arm64.go index 0614d26..4687c73 100644 --- a/vendor/golang.org/x/sys/unix/zerrors_darwin_arm64.go +++ b/vendor/golang.org/x/sys/unix/zerrors_darwin_arm64.go @@ -251,6 +251,7 @@ const ( CSTOP = 0x13 CSTOPB = 0x400 CSUSP = 0x1a + CTLIOCGINFO = 0xc0644e03 CTL_HW = 0x6 CTL_KERN = 0x1 CTL_MAXNAME = 0xc diff --git a/vendor/golang.org/x/sys/unix/ztypes_darwin_386.go b/vendor/golang.org/x/sys/unix/ztypes_darwin_386.go index dd56ab8..9ea0293 100644 --- a/vendor/golang.org/x/sys/unix/ztypes_darwin_386.go +++ b/vendor/golang.org/x/sys/unix/ztypes_darwin_386.go @@ -498,3 +498,8 @@ type Clockinfo struct { Stathz int32 Profhz int32 } + +type CtlInfo struct { + Id uint32 + Name [96]byte +} diff --git a/vendor/golang.org/x/sys/unix/ztypes_darwin_amd64.go b/vendor/golang.org/x/sys/unix/ztypes_darwin_amd64.go index 1f82f2b..255e6cb 100644 --- a/vendor/golang.org/x/sys/unix/ztypes_darwin_amd64.go +++ b/vendor/golang.org/x/sys/unix/ztypes_darwin_amd64.go @@ -503,3 +503,8 @@ type Clockinfo struct { Stathz int32 Profhz int32 } + +type CtlInfo struct { + Id uint32 + Name [96]byte +} diff --git a/vendor/golang.org/x/sys/unix/ztypes_darwin_arm.go b/vendor/golang.org/x/sys/unix/ztypes_darwin_arm.go index 3af01a4..e21c828 100644 --- a/vendor/golang.org/x/sys/unix/ztypes_darwin_arm.go +++ b/vendor/golang.org/x/sys/unix/ztypes_darwin_arm.go @@ -498,3 +498,8 @@ type Clockinfo struct { Stathz int32 Profhz int32 } + +type CtlInfo struct { + Id uint32 + Name [96]byte +} diff --git a/vendor/golang.org/x/sys/unix/ztypes_darwin_arm64.go b/vendor/golang.org/x/sys/unix/ztypes_darwin_arm64.go index ff43738..5eff2c1 100644 --- a/vendor/golang.org/x/sys/unix/ztypes_darwin_arm64.go +++ b/vendor/golang.org/x/sys/unix/ztypes_darwin_arm64.go @@ -503,3 +503,8 @@ type Clockinfo struct { Stathz int32 Profhz int32 } + +type CtlInfo struct { + Id uint32 + Name [96]byte +} diff --git a/vendor/golang.org/x/sys/windows/syscall.go b/vendor/golang.org/x/sys/windows/syscall.go index af828a9..6122f55 100644 --- a/vendor/golang.org/x/sys/windows/syscall.go +++ b/vendor/golang.org/x/sys/windows/syscall.go @@ -25,17 +25,20 @@ package windows // import "golang.org/x/sys/windows" import ( + "bytes" + "strings" "syscall" + "unsafe" + + "golang.org/x/sys/internal/unsafeheader" ) // ByteSliceFromString returns a NUL-terminated slice of bytes // containing the text of s. If s contains a NUL byte at any // location, it returns (nil, syscall.EINVAL). func ByteSliceFromString(s string) ([]byte, error) { - for i := 0; i < len(s); i++ { - if s[i] == 0 { - return nil, syscall.EINVAL - } + if strings.IndexByte(s, 0) != -1 { + return nil, syscall.EINVAL } a := make([]byte, len(s)+1) copy(a, s) @@ -53,6 +56,41 @@ func BytePtrFromString(s string) (*byte, error) { return &a[0], nil } +// ByteSliceToString returns a string form of the text represented by the slice s, with a terminating NUL and any +// bytes after the NUL removed. +func ByteSliceToString(s []byte) string { + if i := bytes.IndexByte(s, 0); i != -1 { + s = s[:i] + } + return string(s) +} + +// BytePtrToString takes a pointer to a sequence of text and returns the corresponding string. +// If the pointer is nil, it returns the empty string. It assumes that the text sequence is terminated +// at a zero byte; if the zero byte is not present, the program may crash. +func BytePtrToString(p *byte) string { + if p == nil { + return "" + } + if *p == 0 { + return "" + } + + // Find NUL terminator. + n := 0 + for ptr := unsafe.Pointer(p); *(*byte)(ptr) != 0; n++ { + ptr = unsafe.Pointer(uintptr(ptr) + 1) + } + + var s []byte + h := (*unsafeheader.Slice)(unsafe.Pointer(&s)) + h.Data = unsafe.Pointer(p) + h.Len = n + h.Cap = n + + return string(s) +} + // Single-word zero for use when we need a valid pointer to 0 bytes. // See mksyscall.pl. var _zero uintptr diff --git a/vendor/golang.org/x/sys/windows/syscall_windows.go b/vendor/golang.org/x/sys/windows/syscall_windows.go index bbd075d..cd71f57 100644 --- a/vendor/golang.org/x/sys/windows/syscall_windows.go +++ b/vendor/golang.org/x/sys/windows/syscall_windows.go @@ -92,11 +92,11 @@ func UTF16FromString(s string) ([]uint16, error) { } // UTF16ToString returns the UTF-8 encoding of the UTF-16 sequence s, -// with a terminating NUL removed. +// with a terminating NUL and any bytes after the NUL removed. func UTF16ToString(s []uint16) string { for i, v := range s { if v == 0 { - s = s[0:i] + s = s[:i] break } } @@ -120,7 +120,7 @@ func UTF16PtrFromString(s string) (*uint16, error) { } // UTF16PtrToString takes a pointer to a UTF-16 sequence and returns the corresponding UTF-8 encoded string. -// If the pointer is nil, this returns the empty string. This assumes that the UTF-16 sequence is terminated +// If the pointer is nil, it returns the empty string. It assumes that the UTF-16 sequence is terminated // at a zero word; if the zero word is not present, the program may crash. func UTF16PtrToString(p *uint16) string { if p == nil { diff --git a/vendor/golang.org/x/sys/windows/zsyscall_windows.go b/vendor/golang.org/x/sys/windows/zsyscall_windows.go index a25f096..f50d037 100644 --- a/vendor/golang.org/x/sys/windows/zsyscall_windows.go +++ b/vendor/golang.org/x/sys/windows/zsyscall_windows.go @@ -17,6 +17,7 @@ const ( var ( errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING) + errERROR_EINVAL error = syscall.EINVAL ) // errnoErr returns common boxed Errno values, to prevent @@ -24,7 +25,7 @@ var ( func errnoErr(e syscall.Errno) error { switch e { case 0: - return syscall.EINVAL + return errERROR_EINVAL case errnoERROR_IO_PENDING: return errERROR_IO_PENDING } diff --git a/vendor/modules.txt b/vendor/modules.txt index bc21053..7617e3a 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -2,7 +2,7 @@ github.com/joho/godotenv # github.com/sirupsen/logrus v1.7.0 github.com/sirupsen/logrus -# golang.org/x/sys v0.0.0-20201016160150-f659759dc4ca +# golang.org/x/sys v0.0.0-20201024232916-9f70ab9862d5 golang.org/x/sys/internal/unsafeheader golang.org/x/sys/unix golang.org/x/sys/windows