Add /api/v1/public/csp-reports endpoint to receive and log
Content-Security-Policy violation reports from browsers.
When CSP is configured with a report-uri directive pointing to this
endpoint, browsers will POST violation reports whenever a CSP rule
is violated. These reports are logged using Koha's logging system
for administrator review.
Features:
- Public endpoint (no authentication required, as browsers send
these reports automatically)
- Logs violations at WARN level with key details (violated directive,
blocked URI, document URI, source location)
- Logs full report at DEBUG level for detailed analysis
- Accepts both application/csp-report and application/json content types
Configuration example (in koha-conf.xml csp_header_value):
...; report-uri /api/v1/public/csp-reports
Log4perl configuration to capture CSP violations:
log4perl.logger.api.csp = WARN, CSP
log4perl.appender.CSP = Log::Log4perl::Appender::File
log4perl.appender.CSP.filename = /var/log/koha/csp-violations.log
log4perl.appender.CSP.layout = PatternLayout
log4perl.appender.CSP.layout.ConversionPattern = [%d] %m%n
Also updates koha-conf.xml documentation with CSP configuration guidance.
Signed-off-by: David Cook <dcook@prosentient.com.au>
Signed-off-by: Lari Taskula <lari.taskula@hypernova.fi>
Signed-off-by: David Cook <dcook@prosentient.com.au>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
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