fix(CuuTruyen): rewrite dead image hosts, fix DRM decode & add API he…

[thefirst632student]

…ader

• Fix dead image hosts: The API may return dead storage hosts such as storage-ct.lrclib.net and storage-ct-riften.site. Added fixStorageHost() to rewrite them to active hosts (storage-bravo.cuutruyen.net / storage-charlie.cuutruyen.net) directly when creating model URLs for covers, panorama covers, and page images.
• Fix DRM decode: Some drm_data values contain whitespace/newline characters, which can break Base64 decoding. Strip whitespace before injecting DRM data into the image URL fragment so the decode -> XOR -> unscramble pipeline works correctly.
• Add API header: Added Cuutruyen-Client: OfficialWebApp-20250805 to /api/ requests via storageHostInterceptor, while also keeping the interceptor as a fallback for host rewriting.

Credit: Issue analysis and solution generated with the assistance of the Ox Alpha (max) AI model.

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Source Name (Language)

CuuTruyen (vi)

Related Issues

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Description

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[Copilot]

Pull request overview

This PR updates the CuuTruyen (vi) parser to make image loading more resilient by rewriting known-dead storage hosts to active ones, and to improve DRM image decoding by sanitizing drm_data before Base64 decoding. It also attempts to add a required API client header for /api/ calls.

Changes:

• Rewrite cover, panorama, and page image URLs from known-dead storage hosts to active hosts via fixStorageHost().
• Strip whitespace from drm_data before injecting it into the image URL fragment for the DRM decode pipeline.
• Add a storageHostInterceptor() intended to (a) rewrite dead storage hosts at request time and (b) attach Cuutruyen-Client header for /api/ requests.

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[thefirst632student]

Addressed. intercept() now routes the request through storageHostInterceptor(chain) before DRM fragment handling, so the dead-host fallback and Cuutruyen-Client API header are applied on this path as well.

[Copilot]

Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated no new comments.

Suppressed comments (1)

Previously missed (1) — in code that hasn't changed since the last review.

src/main/kotlin/tsuki/site/vi/CuuTruyenParser.kt:266

• fixStorageHost() currently does a plain string replacement across the entire URL. That can rewrite occurrences in the path/query/fragment too, even though the intent is to rewrite only the host. It’s safer (and matches storageHostInterceptor behavior) to parse as HttpUrl and replace the host when it matches a fallback entry, falling back to the current string replacement only if parsing fails.

	private fun String.fixStorageHost(): String {
		var result = this
		for ((from, to) in STORAGE_HOST_FALLBACK) {
			result = result.replace(from, to)
		}

[InvalidDavid]

@thefirst632student please note that any PR or fixxes goes through now UMA and as well this source is already fixxed in this repo: https://github.com/dragonx943/manga-repo/blob/master/src%2Fmain%2Fkotlin%2Ftsuki%2Fsite%2Fvi%2FCuuTruyenParser.kt