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phoenix
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Productive. Reliable. Fast. A productive web framework that does not compromise speed or maintainability.
Security advisory:
This version has known vulnerabilities.
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Files
priv/templates/phx.gen.auth/schema.ex
defmodule <%= inspect schema.module %> do
use Ecto.Schema
import Ecto.Changeset
<%= if schema.binary_id do %>
@primary_key {:id, :binary_id, autogenerate: true}
@foreign_key_type :binary_id<% end %>
schema <%= inspect schema.table %> do
field :email, :string
field :password, :string, virtual: true, redact: true
field :hashed_password, :string, redact: true
field :confirmed_at, <%= inspect schema.timestamp_type %>
field :authenticated_at, <%= inspect schema.timestamp_type %>, virtual: true
timestamps(<%= if schema.timestamp_type != :naive_datetime, do: "type: #{inspect schema.timestamp_type}" %>)
end
@doc """
A <%= schema.singular %> changeset for registering or changing the email.
It requires the email to change otherwise an error is added.
## Options
* `:validate_unique` - Set to false if you don't want to validate the
uniqueness of the email, useful when displaying live validations.
Defaults to `true`.
"""
def email_changeset(<%= schema.singular %>, attrs, opts \\ []) do
<%= schema.singular %>
|> cast(attrs, [:email])
|> validate_email(opts)
end
defp validate_email(changeset, opts) do
changeset =
changeset
|> validate_required([:email])
|> validate_format(:email, ~r/^[^@,;\s]+@[^@,;\s]+$/,
message: "must have the @ sign and no spaces"
)
|> validate_length(:email, max: 160)
if Keyword.get(opts, :validate_unique, true) do
changeset
|> unsafe_validate_unique(:email, <%= inspect schema.repo %>)
|> unique_constraint(:email)
|> validate_email_changed()
else
changeset
end
end
defp validate_email_changed(changeset) do
if get_field(changeset, :email) && get_change(changeset, :email) == nil do
add_error(changeset, :email, "did not change")
else
changeset
end
end
@doc """
A <%= schema.singular %> changeset for changing the password.
It is important to validate the length of the password, as long passwords may
be very expensive to hash for certain algorithms.
## Options
* `:hash_password` - Hashes the password so it can be stored securely
in the database and ensures the password field is cleared to prevent
leaks in the logs. If password hashing is not needed and clearing the
password field is not desired (like when using this changeset for
validations on a LiveView form), this option can be set to `false`.
Defaults to `true`.
"""
def password_changeset(<%= schema.singular %>, attrs, opts \\ []) do
<%= schema.singular %>
|> cast(attrs, [:password])
|> validate_confirmation(:password, message: "does not match password")
|> validate_password(opts)
end
defp validate_password(changeset, opts) do
changeset
|> validate_required([:password])
|> validate_length(:password, min: 12, max: 72)
# Examples of additional password validation:
# |> validate_format(:password, ~r/[a-z]/, message: "at least one lower case character")
# |> validate_format(:password, ~r/[A-Z]/, message: "at least one upper case character")
# |> validate_format(:password, ~r/[!?@#$%^&*_0-9]/, message: "at least one digit or punctuation character")
|> maybe_hash_password(opts)
end
defp maybe_hash_password(changeset, opts) do
hash_password? = Keyword.get(opts, :hash_password, true)
password = get_change(changeset, :password)
if hash_password? && password && changeset.valid? do
changeset<%= if hashing_library.name == :bcrypt do %>
# If using Bcrypt, then further validate it is at most 72 bytes long
|> validate_length(:password, max: 72, count: :bytes)<% end %>
# Hashing could be done with `Ecto.Changeset.prepare_changes/2`, but that
# would keep the database transaction open longer and hurt performance.
|> put_change(:hashed_password, <%= inspect hashing_library.module %>.hash_pwd_salt(password))
|> delete_change(:password)
else
changeset
end
end
@doc """
Confirms the account by setting `confirmed_at`.
"""
def confirm_changeset(<%= schema.singular %>) do
<%= case schema.timestamp_type do %>
<% :naive_datetime -> %>now = NaiveDateTime.utc_now(:second)
<% :utc_datetime -> %>now = DateTime.utc_now(:second)
<% :utc_datetime_usec -> %>now = DateTime.utc_now(:microsecond)
<% end %>change(<%= schema.singular %>, confirmed_at: now)
end
@doc """
Verifies the password.
If there is no <%= schema.singular %> or the <%= schema.singular %> doesn't have a password, we call
`<%= inspect hashing_library.module %>.no_user_verify/0` to avoid timing attacks.
"""
def valid_password?(%<%= inspect schema.module %>{hashed_password: hashed_password}, password)
when is_binary(hashed_password) and byte_size(password) > 0 do
<%= inspect hashing_library.module %>.verify_pass(password, hashed_password)
end
def valid_password?(_, _) do
<%= inspect hashing_library.module %>.no_user_verify()
false
end
end