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fix(auth): B-2.2 review fixes — Tailwind path + WCAG + race + flash + tests

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C-1: Add templates/register.html (and templates/auth/**) to tailwind.config.js
content array so utility classes used by the signup template don't get purged
on next build. Rebuilt static/css/marketing.css; verified text-brand-navy/90
and min-h-[calc(100vh-62px)] are now compiled.

I-1: Replace flash() calls for missing required consents with WTForms
field-level errors (form.consent_cgu.errors.append / form.consent_confidentialite
.errors.append). Errors render inline next to each consent checkbox via
{% if form.consent_cgu.errors %}<p role="alert">…</p>{% endif %}. Prevents
session-backed flash messages from leaking across unrelated navigations.

I-2: Wrap user creation + flush in IntegrityError retry loop (max 5 attempts);
import IntegrityError from sqlalchemy.exc. Absorbs the inherent race between
_generate_unique_username's lookup and the subsequent flush under concurrent
signups. Added docstring note to _generate_unique_username explaining the
wrapper.

I-3: Move db.create_all() inside the try/finally in
test_signup_route_csrf_enforced so WTF_CSRF_ENABLED is restored even if
table creation fails.

I-4: Pin test_signup_rejects_duplicate_email assertion to status_code == 200
(WTForms validate_email raises ValidationError → form fails validation →
fall-through to default 200 render_template).

I-5: Add id="password-help" to the password help paragraph and
aria-describedby="password-help" to the password input so screen readers
announce the password requirements when the field is focused.

I-6: Bump flash banner text colors from -700/-800 to -900 variants
(text-amber-900, text-blue-900, text-red-900, text-green-900) for safer
WCAG 2.2 AA contrast against the -50 backgrounds. Same bump applied to the
new consent and password inline error renders.
This commit is contained in:
Allison
2026-04-27 22:43:00 -04:00
parent d2fc1f03ed
commit 3b324ad0b9
5 changed files with 75 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/api/auth.py
View File

@@ -15,6 +15,7 @@ from flask_wtf import FlaskForm
from wtforms import StringField, PasswordField, SubmitField, BooleanField, SelectField
from wtforms.validators import DataRequired, Length, Email, EqualTo, ValidationError
from werkzeug.security import generate_password_hash, check_password_hash
from sqlalchemy.exc import IntegrityError
from urllib.parse import urlparse, urljoin
import markdown
@@ -202,6 +203,11 @@ def _generate_unique_username(email: str) -> str:
Append a numeric suffix on collision. User.username is required, unique,
and capped at 20 chars by the schema.
Note: this lookup-then-pick is inherently racy under concurrent signups
(two requests can both read no-collision and both pick `jane`, then one
flush wins and the other raises IntegrityError). The signup() view wraps
the call site in an IntegrityError retry loop to absorb that race.
"""
local = re.sub(r'[^a-z0-9]', '', email.split('@', 1)[0].lower())[:20] or 'user'
candidate = local
@@ -240,18 +246,21 @@ def signup():
if form.validate_on_submit():
# Hard-stop: required Loi 25 consents (CGU + politique de confidentialité).
missing_required = []
# Errors are attached to the field directly (not flashed) so that the
# message stays scoped to this form-render and never leaks to other
# navigations via the session-backed flash queue.
consent_errors_present = False
if not form.consent_cgu.data:
missing_required.append(
form.consent_cgu.errors.append(
"Vous devez accepter les conditions d'utilisation pour créer un compte."
)
consent_errors_present = True
if not form.consent_confidentialite.data:
missing_required.append(
form.consent_confidentialite.errors.append(
"Vous devez accepter la politique de confidentialité pour créer un compte."
)
if missing_required:
for msg in missing_required:
flash(msg, 'danger')
consent_errors_present = True
if consent_errors_present:
return render_template(
'register.html', title='Créer un compte', form=form
), 400
@@ -270,6 +279,12 @@ def signup():
form.password.data
).decode('utf-8')
# Username generation can race under concurrent signups (two requests
# can both pick `jane` before either flushes). Retry up to 5 times on
# unique-constraint conflict; cap iterations to prevent an infinite
# loop on pathological username churn.
max_username_attempts = 5
for attempt in range(max_username_attempts):
user = User(
username=_generate_unique_username(email_normalized),
email=email_normalized,
@@ -280,7 +295,13 @@ def signup():
email_verified=not is_email_verification_enabled(),
)
db.session.add(user)
try:
db.session.flush() # need user.id for ConsentLog FK
break
except IntegrityError:
db.session.rollback()
if attempt == max_username_attempts - 1:
raise
ip = _client_ip()
ua = (request.headers.get('User-Agent') or '')[:500]

18
static/css/marketing.css
View File

@@ -828,6 +828,9 @@
.min-h-\[8rem\] {
min-height: 8rem;
}
.min-h-\[calc\(100vh-62px\)\] {
min-height: calc(100vh - 62px);
}
.min-h-screen {
min-height: 100vh;
}
@@ -2436,6 +2439,9 @@
.text-amber-800 {
color: var(--color-amber-800);
}
.text-amber-900 {
color: var(--color-amber-900);
}
.text-blue-400 {
color: var(--color-blue-400);
}
@@ -2451,6 +2457,9 @@
.text-blue-800 {
color: var(--color-blue-800);
}
.text-blue-900 {
color: var(--color-blue-900);
}
.text-brand-b3 {
color: #00c896;
}
@@ -2466,6 +2475,9 @@
.text-brand-navy\/80 {
color: color-mix(in oklab, #060d1a 80%, transparent);
}
.text-brand-navy\/90 {
color: color-mix(in oklab, #060d1a 90%, transparent);
}
.text-emerald-500 {
color: var(--color-emerald-500);
}
@@ -2496,6 +2508,9 @@
.text-green-800 {
color: var(--color-green-800);
}
.text-green-900 {
color: var(--color-green-900);
}
.text-indigo-600 {
color: var(--color-indigo-600);
}
@@ -2529,6 +2544,9 @@
.text-red-800 {
color: var(--color-red-800);
}
.text-red-900 {
color: var(--color-red-900);
}
.text-teal-600 {
color: var(--color-teal-600);
}

2
static/css/tailwind.config.js
View File

@@ -1,6 +1,6 @@
/** @type {import('tailwindcss').Config} */
module.exports = {
content: ['./templates/marketing/**/*.html', './templates/legal/**/*.html', './templates/billing/**/*.html', './templates/macros/**/*.html', './src/marketing/**/*.py', './src/legal/**/*.py', './src/billing/**/*.py'],
content: ['./templates/marketing/**/*.html', './templates/legal/**/*.html', './templates/billing/**/*.html', './templates/macros/**/*.html', './templates/auth/**/*.html', './templates/register.html', './src/marketing/**/*.py', './src/legal/**/*.py', './src/billing/**/*.py'],
darkMode: 'class',
theme: {
extend: {

16
templates/register.html
View File

@@ -13,10 +13,10 @@
{% if messages %}
{% for category, message in messages %}
<div role="alert" class="mb-3 p-3 rounded-lg text-sm
{% if category == 'danger' %}bg-red-50 text-red-700 border border-red-200
{% elif category == 'warning' %}bg-amber-50 text-amber-800 border border-amber-200
{% elif category == 'success' %}bg-green-50 text-green-700 border border-green-200
{% else %}bg-blue-50 text-blue-700 border border-blue-200{% endif %}">
{% if category == 'danger' %}bg-red-50 text-red-900 border border-red-200
{% elif category == 'warning' %}bg-amber-50 text-amber-900 border border-amber-200
{% elif category == 'success' %}bg-green-50 text-green-900 border border-green-200
{% else %}bg-blue-50 text-blue-900 border border-blue-200{% endif %}">
{{ message }}
</div>
{% endfor %}
@@ -34,9 +34,9 @@
<div>
<label for="password" class="block text-sm font-medium text-brand-navy mb-1">Mot de passe <span class="text-red-600" aria-hidden="true">*</span></label>
{{ form.password(id='password', autocomplete='new-password', required=true, minlength=8, **{'aria-required':'true', 'class':'w-full px-3 py-2 border border-brand-border rounded-[0.5rem] text-brand-navy focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
{% if form.password.errors %}<p class="text-xs text-red-700 mt-1">{{ form.password.errors[0] }}</p>{% endif %}
<p class="text-xs text-brand-navy/70 mt-1">8&nbsp;caractères minimum, dont une majuscule, une minuscule, un chiffre et un caractère spécial.</p>
{{ form.password(id='password', autocomplete='new-password', required=true, minlength=8, **{'aria-required':'true', 'aria-describedby':'password-help', 'class':'w-full px-3 py-2 border border-brand-border rounded-[0.5rem] text-brand-navy focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
{% if form.password.errors %}<p class="text-xs text-red-900 mt-1">{{ form.password.errors[0] }}</p>{% endif %}
<p id="password-help" class="text-xs text-brand-navy/70 mt-1">8&nbsp;caractères minimum, dont une majuscule, une minuscule, un chiffre et un caractère spécial.</p>
</div>
<div>
@@ -77,11 +77,13 @@
{{ form.consent_cgu(id='consent_cgu', required=true, **{'aria-required':'true', 'class':'mt-1 focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
<span>J'accepte les <a href="/legal/conditions" target="_blank" rel="noopener" class="grad-text underline">conditions d'utilisation</a>. <span class="text-red-600" aria-hidden="true">*</span></span>
</label>
{% if form.consent_cgu.errors %}<p class="text-xs text-red-900 mt-1" role="alert">{{ form.consent_cgu.errors[0] }}</p>{% endif %}
<label for="consent_confidentialite" class="flex items-start gap-2 text-sm text-brand-navy/90">
{{ form.consent_confidentialite(id='consent_confidentialite', required=true, **{'aria-required':'true', 'class':'mt-1 focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}
<span>J'accepte la <a href="/legal/confidentialite" target="_blank" rel="noopener" class="grad-text underline">politique de confidentialité</a>. <span class="text-red-600" aria-hidden="true">*</span></span>
</label>
{% if form.consent_confidentialite.errors %}<p class="text-xs text-red-900 mt-1" role="alert">{{ form.consent_confidentialite.errors[0] }}</p>{% endif %}
<label for="consent_marketing" class="flex items-start gap-2 text-sm text-brand-navy/90">
{{ form.consent_marketing(id='consent_marketing', **{'class':'mt-1 focus-visible:outline-2 focus-visible:outline-brand-b1 focus-visible:outline-offset-2'}) }}

11
tests/test_signup_loi25.py
View File

@@ -209,7 +209,12 @@ def test_signup_rejects_duplicate_email():
data['consent_confidentialite'] = 'y'
resp = client.post('/signup', data=data)
# Form re-rendered (200) with validation error from validate_email.
assert resp.status_code in (200, 400)
# Pinned to 200 exactly: validate_email raises ValidationError →
# form fails validate_on_submit() → fall-through to the final
# `return render_template(...)` which uses the default 200.
assert resp.status_code == 200, (
f"Form should re-render with error inline (200), got {resp.status_code}"
)
body = resp.data.decode('utf-8').lower()
assert 'courriel' in body and ('déjà' in body or 'deja' in body)
@@ -285,8 +290,10 @@ def test_signup_route_csrf_enforced():
with app.app_context():
prev = app.config.get('WTF_CSRF_ENABLED', True)
app.config['WTF_CSRF_ENABLED'] = True
db.create_all()
try:
# create_all() is INSIDE the try so a failure here still restores
# WTF_CSRF_ENABLED for the rest of the test session.
db.create_all()
client = app.test_client()
data = dict(VALID_FORM)
data['email'] = 'csrf@example.qc.ca'