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document change necessary to allow PDF preview to work in Firefox & Chrome

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Since attachement upload is not enabled by default, I suggest to retain the safer CSP as the default but document what is necassary. Disabling the sandboxing is problematic.
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El RIDO 2025-06-07 11:44:02 +02:00
parent 8268a92ebd
commit f49c042cc9
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3 changed files with 12 additions and 3 deletions
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1
CHANGELOG.md
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@ -6,6 +6,7 @@
* CHANGED: Removed use of ctype functions and polyfill library for ctype
* CHANGED: Upgrading libraries to: DOMpurify 3.2.5, ip-lib 1.20.0
* CHANGED: Support for multiple file uploads (#1060)
* CHANGED: Documented CSP change necessary to allow PDF attachment preview (#1552)
* FIXED: Hide Reply button in the discussions once clicked to avoid losing the text input (#1508)
## 1.7.6 (2025-02-01)

10
cfg/conf.sample.php
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@ -118,7 +118,15 @@ languageselection = false
; for details.
; - The 'wasm-unsafe-eval' is used to enable webassembly support (used for zlib
; compression). You can remove it if compression doesn't need to be supported.
; cspheader = "default-src 'none'; base-uri 'self'; form-action 'none'; manifest-src 'self'; connect-src * blob:; script-src 'self' 'wasm-unsafe-eval'; style-src 'self'; font-src 'self'; frame-ancestors 'none'; img-src 'self' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads"
; - The 'unsafe-inline' style-src is used by Chrome when displaying PDF previews
; and can be omitted if attachment upload is disabled (which is the default).
; See https://issues.chromium.org/issues/343754409
; - To allow displaying PDF previews in Firefox or Chrome, sandboxing must also
; get turned off. The following CSP allows PDF previews:
; cspheader = "default-src 'none'; base-uri 'self'; form-action 'none'; manifest-src 'self'; connect-src * blob:; script-src 'self' 'wasm-unsafe-eval'; style-src 'self' 'unsafe-inline'; font-src 'self'; frame-ancestors 'none'; frame-src blob:; img-src 'self' data: blob:; media-src blob:; object-src blob:"
;
; The recommended and default used CSP is:
; cspheader = "default-src 'none'; base-uri 'self'; form-action 'none'; manifest-src 'self'; connect-src * blob:; script-src 'self' 'wasm-unsafe-eval'; style-src 'self'; font-src 'self'; frame-ancestors 'none'; frame-src blob:; img-src 'self' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads"
; stay compatible with PrivateBin Alpha 0.19, less secure
; if enabled will use base64.js version 1.7 instead of 2.1.9 and sha1 instead of

4
lib/Configuration.php
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@ -65,7 +65,7 @@ class Configuration
'qrcode' => true,
'email' => true,
'icon' => 'identicon',
'cspheader' => 'default-src \'none\'; base-uri \'self\'; form-action \'none\'; manifest-src \'self\'; connect-src * blob:; script-src \'self\' \'wasm-unsafe-eval\'; style-src \'self\'; font-src \'self\'; frame-ancestors \'none\'; img-src \'self\' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads',
'cspheader' => 'default-src \'none\'; base-uri \'self\'; form-action \'none\'; manifest-src \'self\'; connect-src * blob:; script-src \'self\' \'wasm-unsafe-eval\'; style-src \'self\'; font-src \'self\'; frame-ancestors \'none\'; frame-src blob:; img-src \'self\' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads',
'zerobincompatibility' => false,
'httpwarning' => true,
'compression' => 'zlib',
@ -119,7 +119,7 @@ class Configuration
'js/kjua-0.9.0.js' => 'sha512-CVn7af+vTMBd9RjoS4QM5fpLFEOtBCoB0zPtaqIDC7sF4F8qgUSRFQQpIyEDGsr6yrjbuOLzdf20tkHHmpaqwQ==',
'js/legacy.js' => 'sha512-UxW/TOZKon83n6dk/09GsYKIyeO5LeBHokxyIq+r7KFS5KMBeIB/EM7NrkVYIezwZBaovnyNtY2d9tKFicRlXg==',
'js/prettify.js' => 'sha512-puO0Ogy++IoA2Pb9IjSxV1n4+kQkKXYAEUtVzfZpQepyDPyXk8hokiYDS7ybMogYlyyEIwMLpZqVhCkARQWLMg==',
'js/privatebin.js' => 'm6RrsOsz4RgIWXDzgRghQDx6aegFCpkpqURwhfXwE/rNWhe/1rPJaLR+FXII82iTWo0n9JCzSbqrDqkYVPI50w==',
'js/privatebin.js' => 'sha512-m6RrsOsz4RgIWXDzgRghQDx6aegFCpkpqURwhfXwE/rNWhe/1rPJaLR+FXII82iTWo0n9JCzSbqrDqkYVPI50w==',
'js/purify-3.2.5.js' => 'sha512-eLlLLL/zYuf5JuG0x4WQm687MToqOGP9cDQHIdmOy1ZpjiY4J48BBcOM7DtZheKk1UogW920+9RslWYB4KGuuA==',
'js/rawinflate-0.3.js' => 'sha512-g8uelGgJW9A/Z1tB6Izxab++oj5kdD7B4qC7DHwZkB6DGMXKyzx7v5mvap2HXueI2IIn08YlRYM56jwWdm2ucQ==',
'js/showdown-2.1.0.js' => 'sha512-WYXZgkTR0u/Y9SVIA4nTTOih0kXMEd8RRV6MLFdL6YU8ymhR528NLlYQt1nlJQbYz4EW+ZsS0fx1awhiQJme1Q==',