tencent cloud

package main

import (
    "crypto/hmac"
    "crypto/sha1"
    "encoding/base64"
    "fmt"
    "io/ioutil"
    "log"
    "net/http"
    "net/url"
    "sort"
    "strings"
    "time"
)

func main() {
    // Application's `ApiAppKey`
    const ApiAppKey = "Your ApiAppKey"
    // Application's `ApiAppSecret`
    const ApiAppSecret = "Your ApiAppSecret"

    const Url = "http://service-xxx-xxx.gz.apigw.tencentcs.com/"

    const GmtFormat = "Mon, 02 Jan 2006 15:04:05 GMT"
    const HTTPMethod = "POST"
    const Accept = "application/json"
    const ContentType = "application/x-www-form-urlencoded"

    // Parse `Host` and `Path` according to `Url`
    u, err := url.Parse(Url)
    if err != nil {
        log.Fatal(err)
    }
    Host := u.Hostname()
    Path := u.Path
    Query := u.RawQuery

    // Environment information is not included in the signature path
    if strings.HasPrefix(Path, "/release") {
        Path = strings.TrimPrefix(Path, "/release")
    }else if strings.HasPrefix(Path, "/test") {
        Path = strings.TrimPrefix(Path, "/test")
    }else if strings.HasPrefix(Path, "/prepub") {
        Path = strings.TrimPrefix(Path, "/prepub")
    }

    if Path == "" {
        Path = "/"
    }

    // Splice query parameters. The query parameters need to be sorted in lexicographical order. In this demo, it is assumed the parameters are already sorted.
    if len(Query) > 0 {
        Path = Path + "?" + Query
    }

    // Get the current UTC time
    xDate := time.Now().UTC().Format(GmtFormat)
    ContentMD5 := ""

    // Request body form data
    body := map[string]string{
        "arg1": "a",
        "arg2": "b",
    }
    var bodyKeys []string
    for k := range body {
        bodyKeys = append(bodyKeys, k)
    }

    var bodyBuilder strings.Builder
    sort.Strings(bodyKeys)
    for _, k := range bodyKeys {
        bodyBuilder.WriteString(fmt.Sprintf("%s=%s&", k, body[k]))
    }
    bodyStr := bodyBuilder.String()
    // Remove the last `&`
    bodyStr = bodyStr[:len(bodyStr) - 1]

    // Construct the signature
    signingStr := fmt.Sprintf("x-date: %s\\n%s\\n%s\\n%s\\n%s\\n%s?%s", xDate, HTTPMethod, Accept, ContentType,
        ContentMD5, Path, bodyStr)
    mac := hmac.New(sha1.New, []byte(ApiAppSecret))

    _, err	= mac.Write([]byte(signingStr))
    if err != nil {
        log.Fatal(err)
    }
    signature := base64.StdEncoding.EncodeToString(mac.Sum(nil))
    sign := fmt.Sprintf("hmac id=\\"%s\\", algorithm=\\"hmac-sha1\\", headers=\\"x-date\\", signature=\\"%s\\"",
        ApiAppKey, signature)

    // Construct the request
    headers := map[string]string{
        "Host":          Host,
        "Accept":        Accept,
        "Content-Type":  ContentType,
        "x-date":        xDate,
        "Authorization": sign,
    }

    // Send the request
    req, err := http.NewRequest(HTTPMethod, Url, strings.NewReader(bodyStr))
    if err != nil {
        log.Fatal(err)
    }

    for k, v := range headers {
        req.Header.Add(k, v)
    }

    res, err := http.DefaultClient.Do(req)
    if err != nil {
        log.Fatal(err)
    }
    defer res.Body.Close()

    resBody, _ := ioutil.ReadAll(res.Body)

    fmt.Println(string(resBody))
}


package main

import (
    "crypto/md5"
    "encoding/base64"
    "encoding/hex"
    "fmt"
    "io/ioutil"
    "log"
    "net/http"
    "net/url"
    "sort"
    "strings"
    "time"
    "unsafe"
)

/*
#cgo CFLAGS: -I./
#cgo LDFLAGS: -L./ -lTencentSM
#include "sm.h" // Quotation mark is used because it is not a standard "C" header file
*/
import "C"


func mySM3_HMAC(data []byte, dataLen int, key []byte, keyLen int, mac []byte, macLen int) int {
    if data == nil || key == nil || mac == nil || len(mac) != macLen {
        panic("invalid parameter")
    }
    return int(C.SM3_HMAC((*C.uchar)(unsafe.Pointer(&data[0])), (C.size_t)(dataLen),
        (*C.uchar)(unsafe.Pointer(&key[0])), (C.size_t)(keyLen), (*C.uchar)(unsafe.Pointer(&mac[0]))))
}

func main() {
    // Application's `ApiAppKey`
    const ApiAppKey = "Your ApiAppKey"
    // Application's `ApiAppSecret`
    const ApiAppSecret = "Your ApiAppSecret"

    const Url = "http://service-xxx-xxx.gz.apigw.tencentcs.com/a?c=1&b=3"

    const GmtFormat = "Mon, 02 Jan 2006 15:04:05 GMT"
    const HTTPMethod = "GET"
    const Accept = "application/json"
    const ContentType = "application/json"

    // Parse `Host` and `Path` according to `Url`
    u, err := url.Parse(Url)
    if err != nil {
        log.Fatal(err)
    }
    Host:= u.Hostname()
    Path:= u.Path
    Query := u.RawQuery

    // Environment information is not included in the signature path
    if strings.HasPrefix(Path, "/release") {
        Path = strings.TrimPrefix(Path, "/release")
    }else if strings.HasPrefix(Path, "/test") {
        Path = strings.TrimPrefix(Path, "/test")
    }else if strings.HasPrefix(Path, "/prepub") {
        Path = strings.TrimPrefix(Path, "/prepub")
    }

    if Path == "" {
        Path = "/"
    }

    // Splice query parameters. The query parameters need to be sorted in lexicographical order.
    if len(Query) > 0 {
        args, _ := url.ParseQuery(Query)

        var keys []string
        for k := range args {
            keys = append(keys, k)
        }
        sort.Strings(keys)

        sortQuery := ""
        for _, k := range keys {
            if args[k][0] != "" {
                sortQuery = sortQuery + "&" + k + "=" + args[k][0]
            } else {
                sortQuery = sortQuery + "&" + k 
            }
        }
        sortQuery = strings.TrimPrefix(sortQuery, "&")

        Path = Path + "?" + sortQuery
    }

    // Get the current UTC time
    xDate := time.Now().UTC().Format(GmtFormat)
    ContentMD5 := ""
    bodyStr := `{"arg1":"a","arg2":"b"}`
    if HTTPMethod == "POST" {
        h := md5.New()
        h.Write([]byte(bodyStr))
        md5Str := hex.EncodeToString(h.Sum(nil))
        ContentMD5 = base64.StdEncoding.EncodeToString([]byte(md5Str))
    }

    // Construct the signature
    signingStr := fmt.Sprintf("x-date: %s\\n%s\\n%s\\n%s\\n%s\\n%s", xDate, HTTPMethod, Accept, ContentType,
        ContentMD5, Path)

    data := []byte(signingStr)
    key := []byte(ApiAppSecret)
    var out [32]byte

    mySM3_HMAC(data[:], len(data), key[:], len(key), out[:], len(out))
    signature := base64.StdEncoding.EncodeToString(out[:])

    sign := fmt.Sprintf("hmac id=\\"%s\\", algorithm=\\"hmac-sm3\\", headers=\\"x-date\\", signature=\\"%s\\"",
        ApiAppKey, signature)

    // Construct the request
    headers := map[string]string{
        "Host":          Host,
        "Accept":        Accept,
        "Content-Type":  ContentType,
        "x-date":        xDate,
        "Authorization": sign,
    }

    // Send the request
    req, err := http.NewRequest(HTTPMethod, Url, strings.NewReader(bodyStr))
    if err != nil {
        log.Fatal(err)
    }

    for k, v := range headers {
        req.Header.Add(k, v)
    }

    res, err := http.DefaultClient.Do(req)
    if err != nil {
        log.Fatal(err)
    }
    defer res.Body.Close()

    resBody, _ := ioutil.ReadAll(res.Body)

    fmt.Println(string(resBody))
}