view docs/xslt/changes.xslt @ 8106:8852f39311de

Fixed segfault when switching off master process during upgrade. Binary upgrades are not supported without master process, but it is, however, possible, that nginx running with master process is asked to upgrade binary, and the configuration file as available on disk at this time includes "master_process off;". If this happens, listening sockets inherited from the previous binary will have ls[i].previous set. But the old cycle on initial process startup, including startup after binary upgrade, is destroyed by ngx_init_cycle() once configuration parsing is complete. As a result, an attempt to dereference ls[i].previous in ngx_event_process_init() accesses already freed memory. Fix is to avoid looking into ls[i].previous if the old cycle is already freed. With this change it is also no longer needed to clear ls[i].previous in worker processes, so the relevant code was removed.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 23 Nov 2022 23:48:53 +0300
parents b7e02f47a339
children de20142f5046
line wrap: on
line source

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

<xsl:output method="text"/>

<xsl:param select="'en'" name="lang"/>
<xsl:param select="'../xml/change_log_conf.xml'" name="configuration"/>

<xsl:variable select="document($configuration)/configuration" name="conf"/>
<xsl:variable select="$conf/start" name="start"/>
<xsl:variable select="$conf/indent" name="indent"/>
<xsl:variable select="$conf/length" name="max"/>
<xsl:variable name="br">&lt;br&gt;</xsl:variable>


<xsl:template match="/"> <xsl:apply-templates select="change_log"/> </xsl:template>
<xsl:template match="change_log"> <xsl:apply-templates select="changes"/> </xsl:template>


<xsl:template match="changes">
    <xsl:text>&#10;</xsl:text>

    <xsl:value-of select="substring(concat($conf/changes[@lang=$lang]/title,
                       //change_log/@title,
                       ' ', @ver,
                       '                                                    '),
                1, $conf/changes[@lang=$lang]/length)"/>

    <xsl:if test="$lang='ru'">
        <xsl:value-of select="substring(@date, 9, 2)"/>
        <xsl:text>.</xsl:text>
        <xsl:value-of select="substring(@date, 6, 2)"/>
        <xsl:text>.</xsl:text>
        <xsl:value-of select="substring(@date, 1, 4)"/>
    </xsl:if>

    <xsl:if test="$lang='en'">
        <xsl:value-of select="substring(@date, 9, 2)"/>
        <xsl:value-of select="$conf/changes[@lang=$lang]/month[number(substring(current()/@date,
                                                            6, 2))]"/>
        <xsl:value-of select="substring(@date, 1, 4)"/>
    </xsl:if>

    <xsl:text>&#10;</xsl:text>

    <xsl:apply-templates select="change"/>

    <xsl:text>&#10;</xsl:text>
</xsl:template>


<xsl:template match="change">
    <xsl:variable select="$conf/changes[@lang=$lang]/*[local-name(.)=current()/@type]" name="prefix"/>

    <xsl:variable name="postfix"> <xsl:if test="$prefix"> <xsl:text>: </xsl:text> </xsl:if> </xsl:variable>

    <xsl:apply-templates select="para[@lang=$lang]"><xsl:with-param select="concat($start, $prefix, $postfix)" name="prefix"/></xsl:apply-templates>
</xsl:template>


<xsl:template name="para" match="para"><xsl:param name="prefix"/>
    <xsl:variable name="text"> <xsl:apply-templates/> </xsl:variable>

    <xsl:text>&#10;</xsl:text>

    <xsl:call-template name="wrap"><xsl:with-param select="normalize-space($text)" name="text"/><xsl:with-param name="prefix"> <xsl:choose><xsl:when test="position() = 1"> <xsl:value-of select="$prefix"/> </xsl:when><xsl:otherwise> <xsl:value-of select="$indent"/> </xsl:otherwise></xsl:choose> </xsl:with-param></xsl:call-template></xsl:template>


<xsl:template name="wrap"><xsl:param name="text"/><xsl:param name="prefix"/>
    <xsl:if test="$text">
        <xsl:variable name="offset">
            <xsl:choose>
                <xsl:when test="starts-with($text, concat($br, ' '))">
                    <xsl:value-of select="string-length($br) + 2"/>
                </xsl:when>
                <xsl:when test="starts-with($text, $br)">
                    <xsl:value-of select="string-length($br) + 1"/>
                </xsl:when>
                <xsl:otherwise>
                    1
                </xsl:otherwise>
            </xsl:choose>
        </xsl:variable>

        <xsl:variable name="length">
            <xsl:call-template name="length"><xsl:with-param select="substring($text, $offset)" name="text"/><xsl:with-param select="string-length($prefix)" name="prefix"/><xsl:with-param select="$max" name="length"/></xsl:call-template></xsl:variable>

        <xsl:value-of select="$prefix"/>

        <xsl:value-of select="normalize-space(translate(substring($text, $offset, $length),
                                    '&#xA0;', ' '))"/>

        <xsl:text>&#10;</xsl:text>

        <xsl:call-template name="wrap"><xsl:with-param select="substring($text, $length + $offset)" name="text"/><xsl:with-param select="$indent" name="prefix"/></xsl:call-template></xsl:if>
</xsl:template>


<xsl:template name="length"><xsl:param name="text"/><xsl:param name="prefix"/><xsl:param name="length"/>
    <xsl:variable select="substring-before(substring($text, 1,
                                    $length - $prefix + string-length($br)),
                                    $br)" name="break"/>

    <xsl:choose>
        <xsl:when test="$break"> <xsl:value-of select="string-length($break)"/> </xsl:when>

        <xsl:when test="$length = 0"> <xsl:value-of select="$max - $prefix"/> </xsl:when>

        <xsl:when test="string-length($text) + $prefix &lt;= $length">
            <xsl:value-of select="$length - $prefix"/>
        </xsl:when>

        <xsl:when test="substring($text, $length - $prefix + 1, 1) = ' '">
            <xsl:value-of select="$length - $prefix + 1"/>
        </xsl:when>

        <xsl:otherwise>
            <xsl:call-template name="length"><xsl:with-param select="$text" name="text"/><xsl:with-param select="$prefix" name="prefix"/><xsl:with-param select="$length - 1" name="length"/></xsl:call-template></xsl:otherwise>
    </xsl:choose>
</xsl:template>


<xsl:template match="at">@</xsl:template>
<xsl:template match="br"> <xsl:value-of select="$br"/> </xsl:template>
<xsl:template match="nobr"> <xsl:value-of select="translate(., ' ', '&#xA0;')"/> </xsl:template>


</xsl:stylesheet>