Chrome browser availability check for RHEL/CentOS

[Mitsuhiro Yoshida]

Adding the following code, we can check Chrome browser installation on Red Hat Enterprise Linux (RHEL) and CentOS environment (Related to Bug #1871515).

File to modify:
export/pdf/lib.php

Line:
133

[Before]
    /**
     * Dumps all views into the HTML export
     */
    private function pdf_view_export_data() {
        global $pdfrun;
        static $browser;
        static $page;

        $progressstart = 85;
        $progressend = 95;
        $i = 0;
        $viewcount = count($this->views);

        if (!isset($pdfrun) || $pdfrun == 'first' || $pdfrun == 'all') {
            $browsertype = 'chromium-browser';
            system('dpkg -l | grep ' . $browsertype, $error);
            if ($error) {
                $browsertype = 'chrome';
                system('dpkg -l | grep ' . $browsertype, $error2);
                if ($error2) {
                    throw new MaharaException('Need to have a Chrome browser installed to use the headless pdf option');
                }
            }

[After]
    /**
     * Dumps all views into the HTML export
     */
    private function pdf_view_export_data() {
        global $pdfrun;
        static $browser;
        static $page;

        $progressstart = 85;
        $progressend = 95;
        $i = 0;
        $viewcount = count($this->views);
        if (system('command -v dpgk')) {
            $command = 'dpkg -l';
        } else {
            $command = 'rpm -qa';
        }

        if (!isset($pdfrun) || $pdfrun == 'first' || $pdfrun == 'all') {
            $browsertype = 'chromium-browser';
            system($command . ' | grep ' . $browsertype, $error);
            if ($error) {
                $browsertype = 'chrome';
                system($command . ' | grep ' . $browsertype, $error2);
                if ($error2) {
                    throw new MaharaException('Need to have a Chrome browser installed to use the headless pdf option');
                }
            }

[Mahara Bot (dev-mahara)]

Patch for "master" branch: https://reviews.mahara.org/10872

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/10872
Committed: https://git.mahara.org/mahara/mahara/commit/2613dc3a6387cccdabbd10375df7b1cd79c6392f
Submitter: Robert Lyon (<email address hidden>)
Branch: master

commit 2613dc3a6387cccdabbd10375df7b1cd79c6392f
Author: Mitsuhiro Yoshida <email address hidden>
Date: Thu Apr 9 06:46:04 2020 +0900

Bug 1871718: Chrome browser availability check for RHEL/CentOS

behatnotneeded

Change-Id: I07fd774acbc41687d77b3379a19b9b15944208e0

[Mahara Bot (dev-mahara)]

Patch for "20.04_STABLE" branch: https://reviews.mahara.org/10903

[Mahara Bot (dev-mahara)]

Reviewed: https://reviews.mahara.org/10903
Committed: https://git.mahara.org/mahara/mahara/commit/d60ec5790756abe199775774bf32ee2172c0cd05
Submitter: Robert Lyon (<email address hidden>)
Branch: 20.04_STABLE

commit d60ec5790756abe199775774bf32ee2172c0cd05
Author: Mitsuhiro Yoshida <email address hidden>
Date: Thu Apr 9 06:46:04 2020 +0900

Bug 1871718: Chrome browser availability check for RHEL/CentOS

behatnotneeded

Change-Id: I07fd774acbc41687d77b3379a19b9b15944208e0
(cherry picked from commit 2613dc3a6387cccdabbd10375df7b1cd79c6392f)