....................................../////.===Shadow-Here===./////................................................ > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < ------------------------------------------------------------------------------------------------------------------- /////////////////////////////////////////////////////////////////////////////////////////////////////////////////// RIFF¤ WEBPVP8 ˜ ðÑ *ôô>‘HŸK¥¤"§£±¨àð enü¹%½_F‘åè¿2ºQú³íªú`N¿­3ÿƒügµJžaÿ¯ÿ°~¼ÎùnúîÞÖô•òíôÁÉß®Sm¥Ü/ ‡ó˜f£Ùà<˜„xëJ¢Ù€SO3x<ªÔ©4¿+ç¶A`q@Ì“Úñè™ÍÿJÌ´ª-˜ÆtÊÛL]Ïq*‘Ý”ì#ŸÌÏãY]@ê`¿ /ªfkØB4·®£ó z—Üw¥Pxù–ÞLШKÇN¾AkÙTf½è'‰g gÆv›Øuh~ a˜Z— ïj*á¥t d£“uÒ ¨`K˜¹ßþ]b>˜]_ÏÔ6W—è2r4x•íÖ…"ƒÖNîä!¦å Ú}ýxGøÌ —@ ;ÆÚŠ=ɾ1ý8lªË¥ô ^yf®Œ¢u&2©nÙÇ›ñÂñŒ³ aPo['½»øFùà­+4ê“$!lövlüÞ=;N®3ð‚õ›DÉKòÞ>ÄÍ ¥ˆuߤ#ˆ$6ù™¥îŠ‡y’ÍB¼ çxÛ;X"WL£R÷͝*ó-¶Zu}º.s¸sšXqù–DþÿvªhüïwyŸ ¯é³lÀ:KCûÄ£Ëá\…­ ~—ýóî ¼ûûÜTÓüÇy…ŽÆvc»¾×U ñ¸žþоP÷¦ó:Ò¨¨5;Ð#&#ÖúñläÿÁœ GxÉ­/ñ‡áQðìYÉtÒwŽ¼GÔ´zàÒò ð*ëzƒ•4~H]Ø‹f ñÓÈñ`NåWçs'ÆÏW^ø¹!XžµmQ5ÃËoLœÎ: ÞËÍ¥J ù…î èo£ßPÎñ¶ž8.Œ]ʵ~5›ÙË-ù*8ÙÖß±~ ©¹rÓê‚j¶d¸{^Q'˜±Crß ÚH—#¥¥QlÀ×ëã‡DÜ«èî þ&Çæžî;ŽÏºò6ÒLÃXy&ZŒ'j‚¢Ù€IßÚù+–MGi‰*jE€‘JcÜ ÓÌ EÏÚj]o˜ Þr <¾U ûŪæÍ/šÝH¥˜b”¼ ÁñßX GP›ï2›4WŠÏà×£…íÓk†¦H·ÅíMh–*nó÷à]ÁjCº€b7<ب‹¨5車bp2:Á[UªM„QŒçiNMa#<5›áËó¸HýÊ"…×Éw¹¦ì2º–x<›»a±¸3Weü®FÝ⑱ö–î–³|LPÈ~çð~Çå‡|º kD¢µÏàÆAI %1À% ¹Ò – ”ϝS¦‰4&¶£°à Öý”û_Ò Áw°A«Å€?mÇÛgHÉ/8)á¾ÛìáöŽP í¨PŸNÙµº¦‡§Ùš"ÿ«>+ªÕ`Ê÷‡‚ß Õû˜þãÇ-PÍ.¾XV‘€ dÜ"þ4¹ ±Oú‘©t¥¦FªÄÃÄ•b‚znýu½—#cDs˜ÃiÑOˆñ×QO=*IAÊ,¶ŽZƒ;‡wøXè%EÐk:F±Ú” .Ѽ+Áu&Ç`."pÈÉw o&¿dE6‘’EqTuK@Ì¥ã™À(Êk(h‰,H}RÀIXÛš3µ1©_OqÚÒJAñ$ÊÙÜ;D3çŒ[þùœh¬Ã³™ö6ç†NY".Ú‰ï[ªŸŒ '²Ð öø_¨ÂÉ9u鶳ÒŠõTàîMØ#û¯gN‡bÙ놚X„ö …ÉeüÌ^J ‹€.œ$Æ)βÄeæW#óüßĺŸ€ ÀzwV 9oä»f4V*uB «Ë†¹ì¯žR霓æHXa=&“I4K;¯ç‹h×·"UŠ~<•â•ªVêª&ÍSÃÆÅ?ÔqÎ*mTM ˜›µwêd#[C¡©§‘D<©àb†–ÁœøvH/,í:¯( ²£|4-„Æövv„Yͼ™^Á$ˆ„¢Û[6yB.åH*V¨æ?$=˜Ñ€•î¦ñ·­(VlŸ‘ nÀt8W÷´Bûba?q9ú¶Xƒl«ÿ\ù¶’þòUÐj/õ¢Ìµ³g$ƒÎR!¸»|Oߍë’BhîÚÑ¢ñåŒJ„®„£2Ð3•ô02Nt…!£Í]Ïc½Qÿ?ˆ<&ÃA¾Ú,JˆijÌ#5yz„‰Î|ÊŽ5QÏ:‹ÐaóVÔxW—CpeÏzÐïíçôÿÅ_[hãsÐ_/ŽTÝ?BîˆííV$<¿i>²F¬_Eß¿ †bÊŒº­ÿ®Z H“C}”¬,Mp ý/Bá£w>˜YV°aƒúh+cŠ- r/[%|üUMHäQ°X»|û/@|°¥Ð !BÔ Ç¢Ä©š+Õì D«7ìN¶ŽðÔ " ƶ’ÖçtA‰Û×}{tþz­¾GÍ›k¹OEJR$ Â׃ «ëÁ"oÉôž$oUK(Ä)Ãz³Ê-‹êN[Ò3Œñbï8P 4ƒ×q¢bo|?<ÛX¬òÄÍ°L–±›(™ûG?ýË©ÚÄ–ÂDØÐ_Ç¡ô ¾–ÄÏø ×e8Ë©$ÄF¹Å‹ì[©óìl:F¾f´‹‹Xì²ï®\¬ôùƒ ÿat¥óèÒùHß0äe‚;ü×h:ÆWðHž=Ã8骣"kœ'Y?³}Tûè€>?0l›e1Lòñ„aæKÆw…hÖŠùW…ÈÆÄ0ši·›[pcwËþñiêíY/~-Á5˜!¿†A›™Mÿþ(±“t@â“ö2­´TG5yé]çå僳 .·ÍïçÝ7UÚ±Ð/Nè»,_Ï ùdj7\ï Wì4›„»c¸àešg#ÒÊ⥭áØo5‘?ÌdÝô¯ ¹kzsƒ=´#ëÉK›Ø´±-¥eW?‡çßtòTã…$Ý+qÿ±ƒ÷_3Ô¥í÷:æ–ž<·Ö‡‰Å¢ š‡%Ô—utÌÈìðžgÖÀz²À—ï÷Óîäõ{K'´È÷³yaÏÁjƒô}ž§®æÊydÕÈë5¯èˆõvÕ©ã*çD„ “z„Ó‡^^xÂ3M§A´JG‚öï 3W'ˆ.OvXè¡ÊÕª?5º7†˜(˜Ç¶#çê’¶!ÌdZK§æ 0fãaN]òY³RV ™î$®K2R¨`W!1Ôó\;Ý ýB%qæK•&ÓÈe9È0êI±žeŸß -ú@žQr¦ ö4»M¼Áè¹µmw 9 EÆE_°2ó„ŸXKWÁ×Hóì^´²GѝF©óäR†¦‰ç"V»eØ<3ùd3ÿÚ¤Žú“Gi" —‘_ÙËÎ~Üö¯¥½Î»üŸEÚŽåmÞþí ;ÞólËΦMzA"Âf(´òá;Éï(/7½ûñÌ­cïÕçлþÝz¾-ÍvÑ“pH­–ðÓj$¸Äû¤‚‘ãUBË-n“2åPkS5&‹Â|+g^œ®Ì͆d!OïäîU«c;{Û!ÅŽ«ëZ9Ókóˆ]¯ƒ›né `ÇÒ+tÆš (ØKá¾—=3œ®•vuMñg²\ï Ec€ 05±d™‡×iÇ×›UúvÌ¢£Èþ¡ÕØô¶ßÎA"ß±#Ö²ˆÊŸ¦*Ä~ij|àø.-¼'»Ú¥£h ofº¦‡VsR=N½„Î v˜Z*SÌ{=jÑB‹tê…;’HžH¯8–îDù8ñ¢|Q•bÛçš–‹m³“ê¨ åÏ^m¬Žãþ©ïêO‡½6] µÆ„Ooòü ²x}N¦Ë3ïé¿»€›HA˜m%çÞ/¿í7Fø“‹léUk)É°Œµ8Q8›:ÀŠeT*šõ~ôڝG6 ¢}`ùH­–”¡k ‰P1>š†®9z11!X wKfmÁ¦xÑ,N1Q”–æB¶M…ÒÃv6SMˆhU¬ÊPŽï‘öj=·CŒ¯u¹ƒVIЃsx4’ömÛýc塶7ßŠß 57^\wÒÐÆ k§h,Œý î«q^R½3]J¸ÇðN ‚çU¬ôº^Áì} ³f©Õœ§ˆã:FÄÈ‚é(€™?àýÓüè1Gô£¼éj‚OÅñ  #>×—ßtà 0G¥Åa뀐kßhc™À_ÉñÞ#±)GD" YîäË-ÿÙ̪ ¹™a¯´¢E\ÝÒö‚;™„ë]_ p8‰o¡ñ+^÷ 3‘'dT4œŽ ðVë½° :¬víÑ«£tßÚS-3¶“þ2 †üüʨòrš¹M{É_¤`Û¨0ìjœøJ‡:÷ÃáZ˜†@GP&œÑDGÏs¡þ¦þDGú‘1Yá9Ôþ¼ ûø…§÷8&–ÜÑnÄ_m®^üÆ`;ÉVÁJ£?â€-ßê}suÍ2sõA NÌúA磸‘îÿÚ»ƒìö·á¿±tÑÐ"Tÿü˜[@/äj¬€uüªìù¥Ý˜á8Ý´sõj 8@rˆð äþZÇD®ÿUÏ2ùôõrBzÆÏÞž>Ì™xœ“ wiÎ×7_… ¸ \#€MɁV¶¥üÕÿPÔ9Z‡ø§É8#H:ƒ5ÀÝå9ÍIŒ5åKÙŠ÷qÄ>1AÈøžj"µÂд/ªnÀ qªã}"iŸBå˜ÓÛŽ¦…&ݧ;G@—³b¯“•"´4í¨ôM¨åñC‹ïùÉó¯ÓsSH2Ý@ßáM‡ˆKÀªÛUeø/4\gnm¥‹ŸŒ qÄ b9ÞwÒNÏ_4Ég³ú=܆‚´ •â¥õeíþkjz>éÚyU«Íӝ݃6"8/ø{=Ô¢»G¥ äUw°W«,ô—¿ãㆅү¢³xŠUû™yŒ (øSópÐ 9\åTâ»—*oG$/×ÍT†Y¿1¤Þ¢_‡ ¼ „±ÍçèSaÓ 3ÛMÁBkxs‰’R/¡¤ˆÙçª(*õ„üXÌ´ƒ E§´¬EF"Ù”R/ÐNyÆÂ^°?™6¡œïJ·±$§?º>ÖüœcNÌù¯G ‹ñ2ŠBB„^·úìaz¨k:#¨Æ¨8LÎõލ£^§S&cŒÐU€ü(‡F±Š¼&P>8ÙÁ ‰ p5?0ÊƃZl¸aô š¼¡}gÿ¶zÆC²¹¬ÎÖG*HB¡O<º2#ñŒAƒ–¡B˜´É$¥›É:FÀÔx¾u?XÜÏÓvN©RS{2ʈãk9rmP¼Qq̳ è¼ÐFׄ^¡Öì fE“F4A…!ì/…¦Lƒ… … $%´¾yã@CI¬ á—3PþBÏNÿ<ý°4Ü ËÃ#ØÍ~âW«rEñw‹eùMMHß²`¬Öó½íf³:‹k˜¯÷}Z!ã¿<¥,\#öµÀ¯aÒNÆIé,Ћ–lŽ#Àæ9ÀÒS·I’½-Ïp Äz¤Š Â* ­íÄ9­< h>׍3ZkËU¹§˜ŒŠ±f­’¤º³Q ÏB?‹#µíÃ¥®@(Gs«†vI¥Mµ‹Á©e~2ú³ÁP4ìÕi‚²Ê^ö@-DþÓàlÜOÍ]n"µã:žpsŽ¢:! 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Current File : /usr/share/dbconfig-common/internal/mysql
# -*- mode: sh -*-
###
### mysql bindings for dbconfig-common
###
###	all variables and functions fall under the namespace "dbc_foo" and
###	"_dbc_foo", depending on whether or not they are "external"
###

# get some common functions
. ${_dbc_root:-/usr/share/dbconfig-common}/internal/common

##
## pass configuration options securely to the mysql client
##
_dbc_generate_mycnf(){
    local mycnf l_date
    mycnf=$(dbc_mktemp dbconfig-common_my.cnf.XXXXXX) || return 1
    l_date=$(date)
    if [ "${_dbc_asuser:-}" ]; then
        cat << EOF > "$mycnf"
# temporary my.cnf generated for usage by dbconfig-common
# generated on $l_date
# if you're reading this, it probably means something went wrong and
# for some strange reason dbconfig-common was not able to clean up after itself.
# you can safely delete this file

[client]
user		= '${dbc_dbuser:-}'
password	= '${dbc_dbpass:-}'
host		= '${dbc_dbserver:-}'
port		= '${dbc_dbport:-3306}'

[mysqldump]
routines

EOF
    else
        cat << EOF > "$mycnf"
# temporary my.cnf generated for usage by dbconfig-common
# generated on $l_date
# if you're reading this, it probably means something went wrong and
# for some strange reason dbconfig-common was not able to clean up after itself.
# you can safely delete this file

[client]
user		= '${dbc_dbadmin:-}'
password	= '${dbc_dbadmpass:-}'
host		= '${dbc_dbserver:-}'
port		= '${dbc_dbport:-3306}'

[mysqldump]
routines

EOF
    fi
    echo $mycnf
}

##
## check that we can actually connect to the specified mysql server
##
## TODO: don't smash stdout/stderr together
_dbc_mysql_check_connect(){
    local constat mycnf
    constat="bad"
    mycnf=$(_dbc_generate_mycnf)
    dbc_error=$(mysql --defaults-file="$mycnf" </dev/null 2>&1) && constat=good
    rm -f "$mycnf"
    if [ "$constat" = "bad" ]; then
        dbc_logline "$dbc_error"
        dbc_logline "unable to connect to mysql server"
        return 1
    fi
}

##
## execute a file with mysql commands
##
##	note this is done without passing any sensitive info on the cmdline
##
dbc_mysql_exec_file(){
    local l_sqlfile l_retval l_error l_dbname l_errfile mycnf
    l_sqlfile=$1
    l_errfile="$(dbc_mktemp dbconfig-common_sql_exec_error.XXXXXX)"
    l_retval=0

    if [ ! "$l_sqlfile" ]; then
        dbc_error="no file supplied to execute"
        dbc_log="no file supplied to execute"
        rm -f "$l_errfile"
        return 1
    elif [ ! -f "$l_sqlfile" ]; then
        dbc_error="file $l_sqlfile missing"
        dbc_log="file $l_sqlfile missing"
        rm -f "$l_errfile"
        return 1
    fi

    l_dbname=
    if [ ! "${_dbc_nodb:-}" ]; then
        l_dbname="$dbc_dbname"
    fi

    mycnf=$(_dbc_generate_mycnf)
    _dbc_mysql_result=$(mysql --defaults-file="$mycnf" $l_dbname 2>"$l_errfile" <"$l_sqlfile") || l_retval=$?
    if [ $l_retval != 0 ]; then
        dbc_error="mysql said: $(cat "$l_errfile")"
    fi
    rm -f "$mycnf" "$l_errfile"
    return $l_retval
}

##
## execute a specific mysql command
##
##	note this is done without passing any sensitive info on the cmdline,
##	including the mysql command itself
##
dbc_mysql_exec_command(){
    local statement l_sqlfile l_retval
    statement="$@"
    l_retval=0
    l_sqlfile=$(dbc_mktemp dbconfig-common_sqlfile.XXXXXX)
    cat << EOF > "$l_sqlfile"
$statement
EOF
    dbc_mysql_exec_file "$l_sqlfile"
    l_retval=$?
    rm -f "$l_sqlfile"
    return $l_retval
}

##
## check for the existance of a specified database
##
_dbc_mysql_check_database(){
    local dbc_dbname l_retval _dbc_nodb
    dbc_dbname=$1
    l_retval=0
    _dbc_nodb="yes"
    dbc_mysql_exec_command "SHOW DATABASES" 2>/dev/null || l_retval=$?
    if [ $l_retval = 0 ] ; then
	echo "$_dbc_mysql_result" | grep -q "^$dbc_dbname\$" || l_retval=$?
    fi
    return $l_retval
}

##
## check for access for a specific user
##
##	this works by checking the grants for the user, so we can verify that
##	not only does the user exist, but that it should be able to connect
##
dbc_mysql_check_user(){
    local l_retval _dbc_nodb
    l_retval=0
    _dbc_nodb="yes"

    _dbc_sanity_check dbuser dballow || return 1

    dbc_mysql_exec_command "SHOW GRANTS FOR '$dbc_dbuser'@'$dbc_dballow'" || \
	l_retval=$?
    if [ $l_retval = 0 ] ; then
	echo "$_dbc_mysql_result" | grep -qi "GRANT .* ON \`$dbc_dbname\`" || \
	    l_retval=$?
    fi
    return $l_retval
}

###
### externally supplied functions
###
###	included inline are some slightly modified / corrected comments from
###	the respective original	functions provided by wwwconfig-common, and
###	comments of similar style for new functions
###
###	all functions return non-zero on error
###

dbc_mysql_createdb(){
    local ret l_dbname _dbc_nodb

    if [ "${_dbc_asuser:-}" ] ; then
        _dbc_sanity_check dbname dbuser mysql || return 1
    else
        _dbc_sanity_check dbname dbadmin mysql || return 1
    fi
    _dbc_mysql_check_connect || return 1

    dbc_logpart "creating database $dbc_dbname:"

    if _dbc_mysql_check_database "$dbc_dbname"; then
        dbc_logline "already exists"
    else
        if [ "${dbc_mysql_createdb_encoding:-}" ]; then
            extrasql=" CHARACTER SET '$dbc_mysql_createdb_encoding'";
        fi
        _dbc_nodb="yes"
        dbc_mysql_exec_command "CREATE DATABASE \`$dbc_dbname\`${extrasql:-}"
        ret=$?
        _dbc_nodb=""
        if [ "$ret" = "0" ]; then
            dbc_logline "success"
            dbc_logpart "verifying database $dbc_dbname exists:"
            if ! _dbc_mysql_check_database "$dbc_dbname"; then
                dbc_logline "failed"
                return 1
            else
                dbc_logline "success"
            fi
        else
            dbc_logline "failed"
            return 1
        fi
    fi
}

# File:		mysql-dropdb.sh
# Needs: $dbc_dbname    - the database that user should have access to.
#        $dbc_dbserver  - the server to connect to.
#        $dbc_dbadmin   - the administrator name.
#     or $dbc_dbuser    - the user name (with _dbc_asuser set)
#        $dbc_dbadmpass - the administrator password.
#     or $dbc_dbpass    - the user password (with _dbc_asuser set)
# Description:	drops a database.

dbc_mysql_dropdb(){
    if [ "${_dbc_asuser:-}" ] ; then
        _dbc_sanity_check dbname dbuser mysql || return 1
    else
        _dbc_sanity_check dbname dbadmin mysql || return 1
    fi
    _dbc_mysql_check_connect || return 1

    dbc_logpart "dropping database $dbc_dbname:"

    if _dbc_mysql_check_database "$dbc_dbname"; then
        if dbc_mysql_exec_command "DROP DATABASE \`$dbc_dbname\`"; then
            dbc_logline "success"
            dbc_logpart "verifying database $dbc_dbname was dropped:"
            if _dbc_mysql_check_database "$dbc_dbname"; then
                dbc_logline "failed"
                return 1
            else
                dbc_logline "success"
            fi
        else
            dbc_logline "failed"
            return 1
        fi
    else
        dbc_logline "database does not exist"
    fi
}

# File:		mysql-createuser.sh
# Description:	Creates or replaces a database user.
# Needs:	$dbc_dbuser    - the user name to create (or replace).
#		$dbc_dballow   - what hosts to allow. defaults to localhost/hostname
#		$dbc_dbname    - the database that user should have access to.
#		$dbc_dbpass    - the password to use.
#		$dbc_dbserver  - the server to connect to (defaults to localhost).
#		$dbc_dbadmin   - the administrator name.
#		$dbc_dbadmpass - the administrator password.

dbc_mysql_createuser(){
    local l_sqlfile l_dbname l_ret l_user_can_login l_do_grant

    _dbc_sanity_check dbuser dbname dbadmin dballow mysql || return 1
    _dbc_mysql_check_connect || return 1

    l_do_grant=0
    l_ret=0
    dbc_logpart "checking privileges on database $dbc_dbname for $dbc_dbuser@$dbc_dballow:"

    # First check if the user can already log in, then we don't have anything
    # todo.
    _dbc_asuser=true
    l_user_can_login=0
    dbc_mysql_check_user || l_user_can_login=$?
    _dbc_asuser=""

    if [ "$l_user_can_login" = 0 ] ; then
        dbc_logline "ok"
        l_do_grant=1
    elif dbc_mysql_check_user ; then
        # The user now exists, but not with the right credentials, so now we
        # need to check if the password can be changed safely, i.e. the user
        # only has grants on the $dbc_dbname.
        # The answer to the query should be 0 if we can update the password.
        dbc_mysql_exec_command "select count(*) from mysql.db where user='$dbc_dbuser' and host='$dbc_dballow' and db not like '$dbc_dbname';" || l_ret=$?
        if [ "$l_ret" != 0 ] ; then
            dbc_logline "failed"
            return $l_ret
        fi
        if [ "$_dbc_mysql_result" = \
"count(*)
0" ] ; then
            dbc_logline "password update needed"
	    l_do_grant=0
        else
            dbc_error="Password mismatch for $dbc_dbuser@$dbc_dballow and not allowed to update because user has privileges on multiple databases"
            return 1
        fi
    else
        dbc_logline "user creation needed"
    fi

    if [ "$l_do_grant" = 0 ] ; then
        dbc_logpart "granting access to database $dbc_dbname for $dbc_dbuser@$dbc_dballow:"
        l_sqlfile=$(dbc_mktemp dbconfig-common.sql.XXXXXX)

        cat << EOF > "$l_sqlfile"
CREATE USER IF NOT EXISTS '$dbc_dbuser'@'$dbc_dballow';
EOF
        # Mysql and MariaDB differ in GRANT SQL command:
        # - MySQL dropped PASSWORD() function support
        # - MySQL uses IDENTIFIED WITH 'plugin' BY 'password'
        # - MariaDB uses IDENTIFIED WITH 'plugin' USING 'password'
        # The way used bellow makes both behave the same.

        if [ "$dbc_authplugin" != "default" ]; then
            cat << EOF >> "$l_sqlfile"
ALTER USER '$dbc_dbuser'@'$dbc_dballow' IDENTIFIED WITH '$dbc_authplugin';
EOF
        fi
        cat << EOF >> "$l_sqlfile"
ALTER USER '$dbc_dbuser'@'$dbc_dballow' IDENTIFIED BY '$(dbc_mysql_escape_str "$dbc_dbpass")';
GRANT ALL PRIVILEGES ON \`$dbc_dbname\`.* TO '$dbc_dbuser'@'$dbc_dballow';
FLUSH PRIVILEGES;
EOF
        l_dbname=$dbc_dbname
        _dbc_nodb="yes"
        dbc_mysql_exec_file "$l_sqlfile"
        l_ret=$?
        _dbc_nodb=""

        if [ "$l_ret" = "0" ]; then
            dbc_logline "success"
            dbc_logpart "verifying access for $dbc_dbuser@$dbc_dballow:"
            if ! dbc_mysql_check_user ; then
                l_ret=1
                dbc_logline "failed"
            else
                dbc_logline "success"
            fi
        else
            dbc_logline "failed"
        fi
        rm -f "$l_sqlfile"
    fi
    return $l_ret
}

# File:		mysql-dropuser.sh
# Needs:	$dbc_dbuser    - the user name to create (or replace).
#		$dbc_dballow   - what hosts to allow (defaults to %).
#		$dbc_dbname    - the database that user should have access to.
#		$dbc_dbserver  - the server to connect to.
#		$dbc_dbadmin   - the administrator name.
#		$dbc_dbadmpass - the administrator password.
# Description:	drops a database user.

dbc_mysql_dropuser(){
    local l_sqlfile l_ret _dbc_nodb

    _dbc_sanity_check dbuser dbname dbadmin dballow mysql || return 1
    _dbc_mysql_check_connect || return 1

    dbc_logpart "revoking access to database $dbc_dbname from $dbc_dbuser@$dbc_dballow:"
    if ! dbc_mysql_check_user; then
        dbc_logline "access does not exist"
    else
        l_sqlfile=$(dbc_mktemp dbconfig-common.sql.XXXXXX)

        cat << EOF > "$l_sqlfile"
REVOKE ALL PRIVILEGES ON \`$dbc_dbname\`.* FROM '$dbc_dbuser'@'$dbc_dballow';
FLUSH PRIVILEGES;
EOF
        _dbc_nodb="yes"
        if dbc_mysql_exec_file "$l_sqlfile" 2>/dev/null; then
            dbc_logline "success"
            l_ret=0
        else
            dbc_logline "failed"
            l_ret=1
        fi
        # XXX no verification!
        rm -f "$l_sqlfile"
        return $l_ret
    fi
}

##
## perform mysqldump
##
dbc_mysql_dump(){
    local mycnf dumperr db dumpfile old_umask
    if [ "${_dbc_asuser:-}" ]; then
        _dbc_sanity_check dbname dbuser mysql || return 1
    else
        _dbc_sanity_check dbname dbadmin mysql || return 1
    fi
    _dbc_mysql_check_connect || return 1
    dumpfile=$1
    dumperr=0
    old_umask=$(umask)
    if _dbc_mysql_check_database "$dbc_dbname"; then
        umask 0066
        mycnf=$(_dbc_generate_mycnf)
        dbc_error=$(mysqldump --defaults-file="$mycnf" $dbc_dbname 2>&1 >"$dumpfile") || dumperr=1
        umask $old_umask
        rm -f "$mycnf"
    else
        dbc_logline "database does not exist"
    fi
    return $dumperr
}

##
## basic installation check
##
dbc_mysql_db_installed(){
    which mysqld >/dev/null 2>&1
}

##
## dbc_mysql_escape_str: properly escape strings passed to mysql queries
##
dbc_mysql_escape_str(){
    sed -e 's,\\,\\&,g' -e "s,',\\\\&,g" << EOF
$1
EOF
}

##
## _dbc_mysql_get_debian_maint_sys: obtain the credentials of the MySQL/MariaDB
## /etc/mysql/debian.cnf file when appropriate
##
_dbc_mysql_get_debian_sys_maint(){
    # Make sure we only return zero in case everything was really alright

    # Technically, I would like to use _dbc_islocalhost, but it turns out that
    # both MySQLs debian-sys-maint and MariaDBs root really only works with
    # "localhost" and not IP based localhosts like 127.0.0.1
    if [ "$dbc_dbserver" != "" ] && [ "$dbc_dbserver" != localhost ] ; then
        _dbc_debug "_dbc_mysql_get_debian_sys_maint: not localhost"
        return 1
    fi
    
    # Of course we can only do our thing if the proper file exists
    if [ ! -f /etc/mysql/debian.cnf ] ; then
        _dbc_debug "_dbc_mysql_get_debian_sys_maint: no /etc/mysql/debian.cnf"
        return 1
    fi

    dbc_logpart "Determining localhost credentials from /etc/mysql/debian.cnf:"

    # Now we have something to process. Although the file says, "DO NOT
    # TOUCH", we do some sanity checks here
    # expected sections are present
    # host is localhost
    # password is plain or empty
    # host/user/password exist twice and equal
    if ! $(grep -q "^\[client\]$" /etc/mysql/debian.cnf) ; then
        dbc_logline "failed (no client section)"
        return 1
    fi
    if ! $(grep -q "^\[mysql_upgrade\]$" /etc/mysql/debian.cnf) ; then
        dbc_logline "failed (no upgrade section)"
        return 1
    fi
    if [ "$(grep -m1 "^[     ]*host" /etc/mysql/debian.cnf)" != \
         "$(grep -m2 "^[     ]*host" /etc/mysql/debian.cnf | tail -n1)" ] ; then
        dbc_logline "failed (hosts not equal)"
        return 1
    fi
    if [ "$(grep -m1 "^[     ]*user" /etc/mysql/debian.cnf)" != \
         "$(grep -m2 "^[     ]*user" /etc/mysql/debian.cnf | tail -n1)" ] ; then
        dbc_logline "failed (users not equal)"
        return 1
    fi
    if [ "$(grep -m1 "^[     ]*password" /etc/mysql/debian.cnf)" != \
         "$(grep -m2 "^[     ]*password" /etc/mysql/debian.cnf | tail -n1)" ] ; then
        dbc_logline "failed (password not equal)"
        return 1
    fi
    if [ "$(grep -m1 "^[     ]*host" /etc/mysql/debian.cnf | awk '{print $3}')" != \
         "localhost" ] ; then
        dbc_logline "failed (not localhost)"
        return 1
    fi

    # Now we are pretty sure we can use the password
    # Command taken from mysql-server-5.5.postinst script
    dbc_dbadmpass="$(sed -n 's/^[     ]*password *= *// p' /etc/mysql/debian.cnf | head -n 1)"
    # We also want to obtain the dbc_dbadmin from this file as MySQL has
    # debian-sys-maint, but MariaDB may have root.
    dbc_dbadmin="$(sed -n 's/^[     ]*user *= *// p' /etc/mysql/debian.cnf | head -n 1)"
    dbc_logline succeeded
    return 0
}

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