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login.go
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login.go
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package commands
import (
"cf/api"
"cf/configuration"
"cf/models"
"cf/net"
"cf/requirements"
"cf/terminal"
"errors"
"fmt"
"github.com/codegangsta/cli"
"strconv"
"strings"
)
const maxLoginTries = 3
const maxChoices = 50
type Login struct {
ui terminal.UI
config configuration.ReadWriter
authenticator api.AuthenticationRepository
endpointRepo api.EndpointRepository
orgRepo api.OrganizationRepository
spaceRepo api.SpaceRepository
}
func NewLogin(ui terminal.UI,
config configuration.ReadWriter,
authenticator api.AuthenticationRepository,
endpointRepo api.EndpointRepository,
orgRepo api.OrganizationRepository,
spaceRepo api.SpaceRepository) (cmd Login) {
cmd.ui = ui
cmd.config = config
cmd.authenticator = authenticator
cmd.endpointRepo = endpointRepo
cmd.orgRepo = orgRepo
cmd.spaceRepo = spaceRepo
return
}
const userSkippedInput string = "user_skipped_input"
func (cmd Login) GetRequirements(reqFactory requirements.Factory, c *cli.Context) (reqs []requirements.Requirement, err error) {
return
}
func (cmd Login) Run(c *cli.Context) {
oldUserName := cmd.config.Username()
apiResponse := cmd.setApi(c)
if apiResponse.IsNotSuccessful() {
cmd.ui.Failed("Invalid API endpoint.\n%s", apiResponse.Message)
return
}
apiResponse = cmd.authenticate(c)
if apiResponse.IsNotSuccessful() {
cmd.ui.Failed("Unable to authenticate.")
return
}
userChanged := (cmd.config.Username() != oldUserName && oldUserName != "")
err := cmd.setOrganization(c, userChanged)
shouldSkipSpace := err != nil && err.Error() == userSkippedInput
if err != nil && !shouldSkipSpace {
cmd.ui.Failed(err.Error())
return
}
if !shouldSkipSpace {
err = cmd.setSpace(c, userChanged)
if err != nil && err.Error() != userSkippedInput {
cmd.ui.Failed(err.Error())
return
}
}
cmd.ui.ShowConfiguration(cmd.config)
return
}
func (cmd Login) setApi(c *cli.Context) (apiResponse net.ApiResponse) {
api := c.String("a")
if api == "" {
api = cmd.config.ApiEndpoint()
}
if api == "" {
api = cmd.ui.Ask("API endpoint%s", terminal.PromptColor(">"))
} else {
cmd.ui.Say("API endpoint: %s", terminal.EntityNameColor(api))
}
endpoint, apiResponse := cmd.endpointRepo.UpdateEndpoint(api)
if !strings.HasPrefix(endpoint, "https://") {
cmd.ui.Say(terminal.WarningColor("Warning: Insecure http API endpoint detected: secure https API endpoints are recommended\n"))
}
return
}
func (cmd Login) authenticate(c *cli.Context) (apiResponse net.ApiResponse) {
username := c.String("u")
if username == "" {
username = cmd.ui.Ask("Username%s", terminal.PromptColor(">"))
}
password := c.String("p")
for i := 0; i < maxLoginTries; i++ {
if password == "" || i > 0 {
password = cmd.ui.AskForPassword("Password%s", terminal.PromptColor(">"))
}
cmd.ui.Say("Authenticating...")
apiResponse = cmd.authenticator.Authenticate(map[string]string{
"username": username,
"password": password,
})
if apiResponse.IsSuccessful() {
cmd.ui.Ok()
cmd.ui.Say("")
break
}
cmd.ui.Say(apiResponse.Message)
}
return
}
func (cmd Login) setOrganization(c *cli.Context, userChanged bool) (err error) {
orgName := c.String("o")
if orgName == "" {
// If the user is changing, clear out the org
if userChanged {
cmd.config.SetOrganizationFields(models.OrganizationFields{})
}
// Reuse org in config
if cmd.config.HasOrganization() && !userChanged {
return
}
availableOrgs := []models.Organization{}
apiResponse := cmd.orgRepo.ListOrgs(func(o models.Organization) bool {
availableOrgs = append(availableOrgs, o)
return len(availableOrgs) < maxChoices
})
if apiResponse.IsNotSuccessful() {
err = errors.New(fmt.Sprintf("Error finding avilable orgs\n%s", apiResponse.Message))
return
}
if len(availableOrgs) == 1 {
return cmd.targetOrganization(availableOrgs[0])
}
orgName = cmd.promptForOrgName(availableOrgs)
}
if orgName == "" {
cmd.ui.Say("")
err = errors.New(userSkippedInput)
return
}
var org models.Organization
var apiResponse net.ApiResponse
org, apiResponse = cmd.orgRepo.FindByName(orgName)
if apiResponse.IsNotSuccessful() {
err = errors.New(apiResponse.Message)
cmd.ui.Failed("Error finding org %s\n%s", terminal.EntityNameColor(orgName), err)
return
}
return cmd.targetOrganization(org)
}
func (cmd Login) promptForOrgName(orgs []models.Organization) string {
orgNames := []string{}
for _, org := range orgs {
orgNames = append(orgNames, org.Name)
}
return cmd.promptForName(orgNames, "Select an org (or press enter to skip):", "Org")
}
func (cmd Login) targetOrganization(org models.Organization) (err error) {
cmd.config.SetOrganizationFields(org.OrganizationFields)
cmd.ui.Say("Targeted org %s\n", terminal.EntityNameColor(org.Name))
return
}
func (cmd Login) setSpace(c *cli.Context, userChanged bool) (err error) {
spaceName := c.String("s")
if spaceName == "" {
// If user is changing, clear the space
if userChanged {
cmd.config.SetSpaceFields(models.SpaceFields{})
}
// Reuse space in config
if cmd.config.HasSpace() && !userChanged {
return
}
var availableSpaces []models.Space
apiResponse := cmd.spaceRepo.ListSpaces(func(space models.Space) bool {
availableSpaces = append(availableSpaces, space)
return (len(availableSpaces) < maxChoices)
})
if apiResponse.IsNotSuccessful() {
err = errors.New(fmt.Sprintf("Error finding available spaces\n%s", apiResponse.Message))
cmd.ui.Failed(err.Error())
return
}
// Target only space if possible
if len(availableSpaces) == 1 {
return cmd.targetSpace(availableSpaces[0])
}
spaceName = cmd.promptForSpaceName(availableSpaces)
}
if spaceName == "" {
cmd.ui.Say("")
err = errors.New(userSkippedInput)
return
}
var space models.Space
var apiResponse net.ApiResponse
space, apiResponse = cmd.spaceRepo.FindByName(spaceName)
if apiResponse.IsNotSuccessful() {
err = errors.New(fmt.Sprintf("Error finding space %s\n%s", terminal.EntityNameColor(spaceName), apiResponse.Message))
cmd.ui.Failed(err.Error())
return
}
err = cmd.targetSpace(space)
return
}
func (cmd Login) promptForSpaceName(spaces []models.Space) string {
spaceNames := []string{}
for _, space := range spaces {
spaceNames = append(spaceNames, space.Name)
}
return cmd.promptForName(spaceNames, "Select a space (or press enter to skip):", "Space")
}
func (cmd Login) targetSpace(space models.Space) (err error) {
cmd.config.SetSpaceFields(space.SpaceFields)
cmd.ui.Say("Targeted space %s\n", terminal.EntityNameColor(space.Name))
return
}
func (cmd Login) promptForName(names []string, listPrompt, itemPrompt string) string {
nameIndex := 0
var nameString string
for nameIndex < 1 || nameIndex > len(names) {
var err error
// list header
cmd.ui.Say(listPrompt)
// only display list if it is shorter than maxChoices
if len(names) < maxChoices {
for i, name := range names {
cmd.ui.Say("%d. %s", i+1, name)
}
} else {
cmd.ui.Say("There are too many options to display, please type in the name.")
}
nameString = cmd.ui.Ask("%s%s", itemPrompt, terminal.PromptColor(">"))
if nameString == "" {
return ""
}
nameIndex, err = strconv.Atoi(nameString)
if err != nil {
nameIndex = 1
return nameString
}
}
return names[nameIndex-1]
}