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request.go
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request.go
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package rgwspublic
import (
"encoding/xml"
"errors"
"fmt"
"io/ioutil"
"net/http"
"strconv"
"strings"
)
var (
ErrInvalidVAT = errors.New("invalid VAT format given")
ErrInvalidCredentials = errors.New("username or password cannot be less than 6 chars")
)
// Version gets web service version
// returns a string or an error
func Version() (*string, error) {
body := `<?xml version="1.0" encoding="UTF-8"?>
<soap:Envelope
xmlns:soap="http://www.w3.org/2003/05/soap-envelope"
xmlns:rgw="http://rgwspublic2/RgWsPublic2Service">
<soap:Header/>
<soap:Body>
<rgw:rgWsPublic2VersionInfo/>
</soap:Body>
</soap:Envelope>`
req, err := http.NewRequest("POST", Endpoint, strings.NewReader(body))
if err != nil {
return nil, err
}
header := http.Header{}
header.Set("Content-Type", "application/soap+xml")
header.Set("Connection", "keep-alive")
header.Set("Content-Length", strconv.Itoa(len(body)))
req.Header = header
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("HTTP Status: %d, error: %s", resp.StatusCode, resp.Status)
}
// parse response
xmlBody, err := parseXML(resp)
if err != nil {
return nil, err
}
err = xmlBody.error()
if err != nil {
return nil, err
}
xmlBody.Error = nil // to correct parser creating an object
return xmlBody.Version, nil
}
// GetVATInfo associated with a VAT number
// accepts a called by VAT and a called for VAT, username and password
// returns AFMData or an error
func GetVATInfo(calledby, calledfor, user, pass string) (*VATInfo, error) {
// vat numbers must be between 9 and 12 chars
if len(calledfor) < 9 || len(calledfor) > 12 {
return nil, ErrInvalidVAT
}
// first one (calledby) can be empty
if calledby != "" {
if len(calledby) < 9 || len(calledby) > 12 {
return nil, ErrInvalidVAT
}
}
// same for username/password
if len(user) < 6 || len(pass) < 6 {
return nil, ErrInvalidCredentials
}
body := fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
<env:Envelope
xmlns:env="http://www.w3.org/2003/05/soap-envelope"
xmlns:ns1="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"
xmlns:ns2="http://rgwspublic2/RgWsPublic2Service"
xmlns:ns3="http://rgwspublic2/RgWsPublic2">
<env:Header>
<ns1:Security>
<ns1:UsernameToken>
<ns1:Username>%v</ns1:Username>
<ns1:Password>%v</ns1:Password>
</ns1:UsernameToken>
</ns1:Security>
</env:Header>
<env:Body>
<ns2:rgWsPublic2AfmMethod>
<ns2:INPUT_REC>
<ns3:afm_called_by>%v</ns3:afm_called_by>
<ns3:afm_called_for>%v</ns3:afm_called_for>
</ns2:INPUT_REC>
</ns2:rgWsPublic2AfmMethod>
</env:Body>
</env:Envelope>`, user, pass, calledby, calledfor)
req, err := http.NewRequest("POST", Endpoint, strings.NewReader(body))
if err != nil {
return nil, err
}
header := http.Header{}
header.Set("Content-Type", "application/soap+xml")
header.Set("Connection", "keep-alive")
header.Set("Content-Length", strconv.Itoa(len(body)))
req.Header = header
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("HTTP Status: %d, error: %s", resp.StatusCode, resp.Status)
}
xmlBody, err := parseXML(resp)
if err != nil {
return nil, err
}
err = xmlBody.VATInfo.error()
if err != nil {
return nil, err
}
// to correct parser creating an object
xmlBody.VATInfo.Error = nil
return &xmlBody.VATInfo, nil
}
// helper function to parse xml response
func parseXML(r *http.Response) (*XMLBody, error) {
rbody, err := ioutil.ReadAll(r.Body)
if err != nil {
return nil, err
}
xmlResp := XMLResponse{}
err = xml.Unmarshal([]byte(rbody), &xmlResp)
if err != nil {
return nil, err
}
return &xmlResp.Body, nil
}