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feat: add standalone IAM support in WebGUI
Gates bucket listing behind an identity policy, lets browsers reach the standalone IAM API, and turns the WebUI into a dashboard for S3, IAM, or both.
**Bucket listing.** `ListBuckets` is now gated by the new `s3:ListAllMyBuckets` action, evaluated against `arn:aws:s3:::*`. The request names no bucket, so only identity policies apply — there is no resource policy to combine with, which is the same shape `CreateBucket` already had, so both now share one identity-only evaluation path. Root and admin bypass it, and backends with no identity-policy layer keep listing as before since their listing is already narrowed to the caller's own buckets. The action is IAM-only and is deliberately absent from the bucket-policy action list.
**Fixed bucket ownership.** The standalone IAM client has no per-user ownership to express — accounts are all plain users, cannot be enumerated, and access is decided by policy rather than ACL — so it now implements `auth.FixedBucketOwner` and every bucket is owned by root. Bucket creation stops resolving an owner, `ListBuckets` returns every bucket to every caller (what they may then do with one stays a per-request policy decision), and the admin `ChangeBucketOwner` reports method-not-supported. Other IAM backends are untouched.
**IAM service CORS.** `--cors-allow-origin` now applies to the `iam` command: it answers preflights and stamps the CORS headers, mirroring back the requested method and headers rather than enumerating the SigV4 header set. Without it no browser can reach the IAM API at all, so setting `--webui` without it falls back to `*` with a warning. The chart gets `iamServer.corsAllowOrigin`.
**WebUI.** New IAM pages for users, roles and OIDC providers, signing IAM/STS query-form requests directly from the browser. Navigation is capability-gated rather than role-gated: on sign-in the session probes the S3, admin and IAM endpoints independently and each page shows only what those credentials actually reach, so one build serves an IAM-only dashboard, an S3-only dashboard, and a combined one. The login page takes an optional IAM endpoint, seeded from the new `--webui-iam-gateways` (chart: `webui.iamGateways`) — never auto-detected, since the IAM service is a separate process. The WebUI can also be hosted by `versitygw iam` itself, for deployments with no S3 gateway behind it.
**The admin API is ignored once an IAM endpoint is in play.** The IAM service is then the user directory and bucket ownership is fixed, which leaves the admin API no job: the session is given no admin endpoint at all, its login field is hidden, `users.html` redirects to its IAM counterpart, and every admin-only surface stays off screen. Dashboard and Buckets remain available to any S3 session in such a deployment, running on the S3 and IAM APIs alone and surfacing each denial per action instead of redirecting.
Also fixes two WebUI bugs: embedded assets went out with a zero modification time and no `Cache-Control`, so browsers treated them as fresh for centuries and an upgraded gateway served new HTML against stale JS — they now revalidate against an ETag; and the login page's advanced-options section clipped its last field, since it animated to a height named in the stylesheet rather than the one it measures now.
**Usage**
IAM-only dashboard, served by the IAM service:
versitygw iam --port :7076 --webui :8080 --cors-allow-origin http://localhost:8080/
IAM + S3, dashboard served by the IAM service — point it at the gateway with `--webui-gateways`, and let the gateway accept the dashboard's origin:
versitygw iam --port :7076 --webui :8080 --webui-gateways http://localhost:7070/ --cors-allow-origin http://localhost:8080/
versitygw --port :7070 --cors-allow-origin http://localhost:8080/ posix /data
IAM + S3, dashboard served by the S3 gateway — point it at the IAM service with `--webui-iam-gateways`, and let the IAM service accept the dashboard's origin:
versitygw --port :7070 --webui :8080 --webui-iam-gateways http://localhost:7076/ posix /data
versitygw iam --port :7076 --cors-allow-origin http://localhost:8080/
This commit is contained in:
niksis02
+21
-11
@@ -50,35 +50,45 @@ under the License.
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</a>
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</div>
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<nav class="flex-1 py-4">
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<div class="px-6 pt-2 pb-2 text-[11px] font-semibold tracking-wider text-white/40 uppercase" data-admin-only>
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Admin
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<div class="px-6 pt-2 pb-2 text-[11px] font-semibold tracking-wider text-white/40 uppercase" data-management-only>
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Management
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</div>
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<a href="dashboard.html" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-admin-only>
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<a href="dashboard.html" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-management-only>
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<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2H6a2 2 0 01-2-2V6zM14 6a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2V6zM4 16a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2H6a2 2 0 01-2-2v-2zM14 16a2 2 0 012-2h2a2 2 0 012 2v2a2 2 0 01-2 2h-2a2 2 0 01-2-2v-2z"/>
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</svg>
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<span class="font-medium">Dashboard</span>
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</a>
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<a href="users.html" class="nav-item active flex items-center gap-3 px-6 py-3 text-white" data-admin-only>
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<a href="users.html" class="nav-item active flex items-center gap-3 px-6 py-3 text-white" data-admin-only data-admin-users-only>
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<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 4.354a4 4 0 110 5.292M15 21H3v-1a6 6 0 0112 0v1zm0 0h6v-1a6 6 0 00-9-5.197M13 7a4 4 0 11-8 0 4 4 0 018 0z"/>
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</svg>
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<span class="font-medium">Users</span>
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</a>
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<a href="buckets.html" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-admin-only>
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<a href="buckets.html" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-management-only>
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<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 8h14M5 8a2 2 0 110-4h14a2 2 0 110 4M5 8v10a2 2 0 002 2h10a2 2 0 002-2V8m-9 4h4"/>
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</svg>
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<span class="font-medium">Buckets</span>
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</a>
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<div class="mx-6 my-2 border-t border-white/10" data-admin-only></div>
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<a href="explorer.html" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white">
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<div class="mx-6 my-2 border-t border-white/10" data-management-only></div>
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<a href="explorer.html" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-s3-only>
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<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 7v10a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-6l-2-2H5a2 2 0 00-2 2z"/>
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</svg>
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<span class="font-medium">Explorer</span>
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</a>
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<div class="mx-6 my-2 border-t border-white/10"></div>
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<div class="mx-6 my-2 border-t border-white/10" data-s3-only></div>
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<div class="px-6 pt-2 pb-2 text-[11px] font-semibold tracking-wider text-white/40 uppercase" data-iam-only>
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Identity & Access
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</div>
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<a href="iam.html" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-iam-only>
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<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m5.618-4.016A11.955 11.955 0 0112 2.944a11.955 11.955 0 01-8.618 3.04A12.02 12.02 0 003 9c0 5.591 3.824 10.29 9 11.622 5.176-1.332 9-6.03 9-11.622 0-1.042-.133-2.052-.382-3.016z"/>
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</svg>
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<span class="font-medium">IAM</span>
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</a>
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<div class="mx-6 my-2 border-t border-white/10" data-iam-only></div>
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<div class="px-6 pt-2 pb-2 text-[11px] font-semibold tracking-wider text-white/40 uppercase">
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Resources
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</div>
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@@ -88,13 +98,13 @@ under the License.
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</svg>
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<span class="font-medium">Documentation</span>
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</a>
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<a href="https://github.com/versity/versitygw/issues" target="_blank" rel="noopener noreferrer" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-admin-only>
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<a href="https://github.com/versity/versitygw/issues" target="_blank" rel="noopener noreferrer" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-management-only>
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<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"/>
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</svg>
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<span class="font-medium">Bug Reports</span>
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</a>
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<a href="https://github.com/versity/versitygw/releases" target="_blank" rel="noopener noreferrer" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-admin-only>
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<a href="https://github.com/versity/versitygw/releases" target="_blank" rel="noopener noreferrer" class="nav-item flex items-center gap-3 px-6 py-3 text-white/70 hover:text-white" data-management-only>
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<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
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<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M7 16a4 4 0 01-.88-7.903A5 5 0 1115.9 6L16 6a5 5 0 011 9.9M15 13l-3-3m0 0l-3 3m3-3v12"/>
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</svg>
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@@ -390,7 +400,7 @@ under the License.
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dropdown.classList.remove('show');
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}
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if (!requireAdmin()) {
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if (!requireGatewayUsers()) {
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// Redirected
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} else {
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initSidebarWithRole();
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