d_s_bisht/devsofttech_hms_ci4
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix Chrome PDF corruption by clearing output buffers and adding X-Content-Type-Options header

Browse Source 
- Clear all output buffers before sending PDF binary to prevent corruption
- Add X-Content-Type-Options: nosniff to force Chrome to treat response as PDF
- Apply fixes to main, fallback, and ultimate fallback PDF response paths
- Fixes issue where Chrome fails to open PDF while Firefox/Edge work
- Critical for PDFs with Hindi/UTF-8 content where output buffering can corrupt binary data
This commit is contained in:
DevSoftTech Server 2026-06-08 23:30:12 +05:30
parent 46315ac5ed
commit 8e293c4ffb
1 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
app/Controllers/Ipd_discharge.php
View File

@ -6168,12 +6168,19 @@ class Ipd_discharge extends BaseController
return $mpdf->Output($fileName, Destination::STRING_RETURN);
});
// Clear any output buffers to prevent corruption of binary PDF data
while (ob_get_level() > 0) {
ob_end_clean();
}
return $this->response
->setHeader('Content-Type', 'application/pdf')
->setHeader('Content-Length', (string) strlen($pdfBinary))
->setHeader('Content-Disposition', 'inline; filename="' . rawurlencode($fileName) . '"; filename*=UTF-8\'\''. rawurlencode($fileName))
->setHeader('Cache-Control', 'private, max-age=0, must-revalidate')
->setHeader('Accept-Ranges', 'bytes')
->setHeader('X-Content-Type-Options', 'nosniff')
->setBody($pdfBinary);
} catch (\Throwable $e) {
log_message('error', 'PDF generation failed for IPD {ipd}: {msg}', [
@ -6214,12 +6221,18 @@ class Ipd_discharge extends BaseController
log_message('warning', 'Discharge PDF fallback render succeeded for IPD {ipd}', ['ipd' => $ipdId]);
// Clear any output buffers to prevent corruption of binary PDF data
while (ob_get_level() > 0) {
ob_end_clean();
}
return $this->response
->setHeader('Content-Type', 'application/pdf')
->setHeader('Content-Length', (string) strlen($pdfBinary))
->setHeader('Content-Disposition', 'inline; filename="' . rawurlencode($fileName) . '"; filename*=UTF-8\'\''. rawurlencode($fileName))
->setHeader('Cache-Control', 'private, max-age=0, must-revalidate')
->setHeader('Accept-Ranges', 'bytes')
->setHeader('X-Content-Type-Options', 'nosniff')
->setBody($pdfBinary);
} catch (\Throwable $fallbackError) {
log_message('error', 'Discharge PDF fallback failed for IPD {ipd}: {msg}', [
@ -6266,12 +6279,18 @@ class Ipd_discharge extends BaseController
log_message('warning', 'Discharge PDF ultimate fallback render succeeded for IPD {ipd}', ['ipd' => $ipdId]);
// Clear any output buffers to prevent corruption of binary PDF data
while (ob_get_level() > 0) {
ob_end_clean();
}
return $this->response
->setHeader('Content-Type', 'application/pdf')
->setHeader('Content-Length', (string) strlen($pdfBinary))
->setHeader('Content-Disposition', 'inline; filename="' . rawurlencode($fileName) . '"; filename*=UTF-8\'\''. rawurlencode($fileName))
->setHeader('Cache-Control', 'private, max-age=0, must-revalidate')
->setHeader('Accept-Ranges', 'bytes')
->setHeader('X-Content-Type-Options', 'nosniff')
->setBody($pdfBinary);
} catch (\Throwable $ultimateError) {
log_message('error', 'Discharge PDF ultimate fallback failed for IPD {ipd}: {msg}', [