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serviceEndpoints.go
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serviceEndpoints.go
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package httpd
import (
"encoding/json"
"errors"
"fmt"
"net/http"
"regexp"
"strings"
"time"
"github.com/Cloud-Foundations/keymaster/lib/instrumentedwriter"
)
func (s *Server) getPreferredAcceptType(r *http.Request) string {
preferredAcceptType := "application/json"
acceptHeader, ok := r.Header["Accept"]
if ok {
for _, acceptValue := range acceptHeader {
if strings.Contains(acceptValue, "text/html") {
s.logger.Debugf(2, "Got it %+v", acceptValue)
preferredAcceptType = "text/html"
}
}
}
return preferredAcceptType
}
func (s *Server) consoleAccessHandler(w http.ResponseWriter, r *http.Request) {
authUser, err := s.getRemoteUserName(w, r)
if err != nil {
return
}
w.(*instrumentedwriter.LoggingWriter).SetUsername(authUser)
err = r.ParseForm()
if err != nil {
s.logger.Println(err)
http.Error(w, "Error parsing form", http.StatusBadRequest)
return
}
mode := "webConsole"
valueArr, ok := r.Form["mode"]
if ok {
mode = valueArr[0]
}
userAccounts, err := s.brokers["aws"].GetUserAllowedAccounts(authUser)
if err != nil {
s.logger.Printf("Failed to get aws accounts for %s, err=%v", authUser, err)
http.Error(w, "error", http.StatusInternalServerError)
return
}
cloudAccounts := make(map[string]cloudAccountInfo)
for _, account := range userAccounts {
cloudAccounts[account.HumanName] = cloudAccountInfo{Name: account.Name,
AvailableRoles: account.PermittedRoleName}
}
displayData := consolePageTemplateData{
Title: "Cloud-Gate console access",
AuthUsername: authUser,
CloudAccounts: cloudAccounts,
}
if mode == "genToken" {
displayData.TokenConsole = true
}
returnAcceptType := s.getPreferredAcceptType(r)
switch returnAcceptType {
case "text/html":
w.Header().Set("Cache-Control", "private, max-age=30")
err = s.htmlTemplate.ExecuteTemplate(w, "consoleAccessPage", displayData)
if err != nil {
s.logger.Printf("Failed to execute %v", err)
http.Error(w, "error", http.StatusInternalServerError)
return
}
default:
displayData.Title = ""
b, err := json.MarshalIndent(displayData, "", " ")
if err != nil {
s.logger.Printf("Failed marshal %v", err)
http.Error(w, "error", http.StatusInternalServerError)
return
}
_, err = w.Write(b)
if err != nil {
s.logger.Printf("Incomplete write? %v", err)
}
}
return
}
// Assumes the form is alreadty parsed.
func (s *Server) getVerifyFormValues(r *http.Request, formKey []string, retext string) (map[string][]string, error) {
var m map[string][]string
m = make(map[string][]string)
for _, key := range formKey {
valueArr, ok := r.Form[key]
if !ok {
return nil, errors.New("Missing required parameter")
}
for _, value := range valueArr {
ok, err := regexp.MatchString(retext, value)
if err != nil {
return nil, err
}
if !ok {
return nil, errors.New("Missing invalid parameter")
}
}
m[key] = valueArr
}
return m, nil
}
func (s *Server) getConsoleUrlHandler(w http.ResponseWriter, r *http.Request) {
authUser, err := s.getRemoteUserName(w, r)
if err != nil {
return
}
w.(*instrumentedwriter.LoggingWriter).SetUsername(authUser)
if !(r.Method == "POST" || r.Method == "GET") {
s.logger.Printf("Invalid method for getConsole username for %s", authUser)
http.Error(w, "error", http.StatusMethodNotAllowed)
return
}
err = r.ParseForm()
if err != nil {
s.logger.Println(err)
http.Error(w, "Error parsing form", http.StatusBadRequest)
return
}
validatedParams, err := s.getVerifyFormValues(r, []string{"accountName", "roleName"}, "^[A-Za-z0-9_.-]{2,40}$")
if err != nil {
s.logger.Println(err)
http.Error(w, "Error parsing form", http.StatusBadRequest)
return
}
accountName := validatedParams["accountName"][0]
roleName := validatedParams["roleName"][0]
ok, err := s.brokers["aws"].IsUserAllowedToAssumeRole(authUser, accountName, roleName)
if err != nil {
s.logger.Printf("Failure checking user permissions: %s", err)
http.Error(w, "Error getting user permissions.", http.StatusInternalServerError)
return
}
if !ok {
http.Error(w, "Invalid account or Role", http.StatusForbidden)
return
}
issuerURL := fmt.Sprintf("https://%s%s", r.Host, r.URL.String())
destUrl, err := s.brokers["aws"].GetConsoleURLForAccountRole(accountName, roleName, authUser, issuerURL)
if err != nil {
s.logger.Printf("Failed to generate console for account: %s role: %s user: %s, err: %v", accountName, roleName, authUser, err)
http.Error(w, "Failed to Generate Console URL for account/role (Missing/invalid trust?)", http.StatusInternalServerError)
return
}
http.Redirect(w, r, destUrl, 302)
return
}
func (s *Server) generateTokenHandler(w http.ResponseWriter, r *http.Request) {
authUser, err := s.getRemoteUserName(w, r)
if err != nil {
return
}
w.(*instrumentedwriter.LoggingWriter).SetUsername(authUser)
// TODO: check for valid method
err = r.ParseForm()
if err != nil {
s.logger.Println(err)
http.Error(w, "Error parsing form", http.StatusBadRequest)
return
}
validatedParams, err := s.getVerifyFormValues(r, []string{"accountName", "roleName"}, "^[A-Za-z0-9_.-]{2,40}$")
if err != nil {
s.logger.Println(err)
http.Error(w, "Error parsing form", http.StatusBadRequest)
return
}
accountName := validatedParams["accountName"][0]
roleName := validatedParams["roleName"][0]
ok, err := s.brokers["aws"].IsUserAllowedToAssumeRole(authUser, accountName, roleName)
if err != nil {
s.logger.Printf("Failure checking user permissions: %s", err)
http.Error(w, "Error getting user permissions.", http.StatusInternalServerError)
return
}
if !ok {
http.Error(w, "Invalid account or Role", http.StatusForbidden)
return
}
tempCredentials, err := s.brokers["aws"].GenerateTokenCredentials(accountName, roleName, authUser)
if err != nil {
s.logger.Printf("Failed to generate Token for account: %s role: %s user: %s, err: %v", accountName, roleName, authUser, err)
http.Error(w, "Failed to Generate Token for account/role (Missing/invalid trust?)", http.StatusInternalServerError)
return
}
returnAcceptType := s.getPreferredAcceptType(r)
switch returnAcceptType {
case "text/html":
displayData := generateTokenPageTemplateData{
Title: "Cloud-Gate credential output",
AuthUsername: authUser,
AccountName: accountName,
RoleName: roleName,
SessionId: tempCredentials.SessionId,
SessionKey: tempCredentials.SessionKey,
SessionToken: tempCredentials.SessionToken,
TokenExpiration: tempCredentials.Expiration.UTC().Format(time.RFC3339),
Region: tempCredentials.Region,
}
err = s.htmlTemplate.ExecuteTemplate(w, "generateTokenPagePage", displayData)
if err != nil {
s.logger.Printf("Failed to execute %v", err)
http.Error(w, "error", http.StatusInternalServerError)
return
}
default:
b, err := json.MarshalIndent(tempCredentials, "", " ")
if err != nil {
s.logger.Printf("Failed marshal %v", err)
http.Error(w, "error", http.StatusInternalServerError)
return
}
_, err = w.Write(b)
if err != nil {
s.logger.Printf("Write Error: %v", err)
}
}
return
}