121 lines
2.8 KiB
Go
121 lines
2.8 KiB
Go
package postgresql
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import (
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"fmt"
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"time"
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"github.com/hashicorp/vault/helper/uuid"
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"github.com/hashicorp/vault/logical"
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"github.com/hashicorp/vault/logical/framework"
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_ "github.com/lib/pq"
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)
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func pathRoleCreate(b *backend) *framework.Path {
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return &framework.Path{
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Pattern: `creds/(?P<name>\w+)`,
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Fields: map[string]*framework.FieldSchema{
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"name": &framework.FieldSchema{
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Type: framework.TypeString,
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Description: "Name of the role.",
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},
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},
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Callbacks: map[logical.Operation]framework.OperationFunc{
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logical.ReadOperation: b.pathRoleCreateRead,
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},
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HelpSynopsis: pathRoleCreateReadHelpSyn,
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HelpDescription: pathRoleCreateReadHelpDesc,
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}
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}
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func (b *backend) pathRoleCreateRead(
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req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
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name := data.Get("name").(string)
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// Get the role
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role, err := b.Role(req.Storage, name)
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if err != nil {
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return nil, err
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}
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if role == nil {
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return logical.ErrorResponse(fmt.Sprintf("unknown role: %s", name)), nil
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}
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// Determine if we have a lease
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lease, err := b.Lease(req.Storage)
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if err != nil {
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return nil, err
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}
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if lease == nil {
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lease = &configLease{Lease: 1 * time.Hour}
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}
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// Generate the username, password and expiration. PG limits user to 63 characters
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displayName := req.DisplayName
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if len(displayName) > 26 {
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displayName = displayName[:26]
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}
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username := fmt.Sprintf("%s-%s", displayName, uuid.GenerateUUID())
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if len(username) > 63 {
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username = username[:63]
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}
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password := uuid.GenerateUUID()
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expiration := time.Now().UTC().
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Add(lease.Lease + time.Duration((float64(lease.Lease) * 0.1))).
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Format("2006-01-02 15:04:05")
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// Get our connection
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db, err := b.DB(req.Storage)
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if err != nil {
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return nil, err
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}
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// Start a transaction
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tx, err := db.Begin()
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if err != nil {
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return nil, err
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}
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defer tx.Rollback()
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// Execute each query
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for _, query := range SplitSQL(role.SQL) {
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stmt, err := db.Prepare(Query(query, map[string]string{
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"name": username,
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"password": password,
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"expiration": expiration,
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}))
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if err != nil {
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return nil, err
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}
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if _, err := stmt.Exec(); err != nil {
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return nil, err
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}
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}
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// Commit the transaction
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if err := tx.Commit(); err != nil {
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return nil, err
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}
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// Return the secret
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resp := b.Secret(SecretCredsType).Response(map[string]interface{}{
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"username": username,
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"password": password,
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}, map[string]interface{}{
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"username": username,
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})
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resp.Secret.Lease = lease.Lease
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return resp, nil
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}
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const pathRoleCreateReadHelpSyn = `
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Request database credentials for a certain role.
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`
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const pathRoleCreateReadHelpDesc = `
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This path reads database credentials for a certain role. The
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database credentials will be generated on demand and will be automatically
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revoked when the lease is up.
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`
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