OpenWrt 1: HTTP presmerovani s BusyBoxem (KAMIKAZE)

Na desce Router Station od Ubiquity pouzivam OpenWrt KAMIKAZE r13658. OpenWrt asi neni potreba predstavovat, je to mala Linuxova distribuce urcena pro ruzne routery, RouterBoardy a podobne. Potreboval jsem vyresit presmerovani http vzdy na uvodni stranku. Jako webovy server jsem pouzil ten vestaveny v BusyBoxu.

Potreboval jsem, aby byl uzivatel vzdy presmerovan na http://192.168.50.1/index.html, bez ohledu na to, co tam zada. Tedy napriklad http://192.168.50.1/pokus.html a http://192.168.50.1/windows_xp.iso musi vzdy zobrazit http://192.168.50.1/index.html.

Vyresit se to da jednoduse pomoci parametru pri spusteni web serveru:

/usr/sbin/httpd -p 80 -h /www -r OpenWrt -H 192.168.50.1 -R /index.html

-H presmeruje na IP a -R presmeruje na soubor, ktery je ulozen v adresari webserveru /www.

Pokud chceme pouzit vychozi zpusob nastaveni v OpenWrt UCI, musime upravit prislusny soubor /etc/config/httpd:

config httpd option port 80 option home /www option host 192.168.50.1 option path /index.html

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config httpd
 option port 80
 option home /www
 option host 192.168.50.1
 option path /index.html

S promennymi host a path ale OpenWrt nepocita, proto je jeste potreba neco pridat souboru /etc/init.d/httpd:

#!/bin/sh /etc/rc.common # Copyright (C) 2006 OpenWrt.org START=50 HTTPD_BIN="/usr/sbin/httpd" system_config() { local cfg="$1" config_get hostname "$cfg" hostname } httpd_config() { local cfg="$1" local c_file port realm home args config_get c_file "$cfg" c_file [ -n "$c_file" -a -f "$c_file" ] && append args "-c \"$c_file\"" config_get port "$cfg" port append args "-p ${port:-80}" config_get home "$cfg" home home="${home:-/www}" [ -d "$home" ] || return 1 append args "-h \"$home\"" config_get realm "$cfg" realm realm="${realm:-$hostname}" append args "-r \"$realm\"" ############################## config_get path "$cfg" path path="${path:-$path}" append args "-R \"$path\"" config_get host "$cfg" host host="${host:-$host}" append args "-H \"$host\"" ############################## eval "$HTTPD_BIN $args" } start() { [ -x "$HTTPD_BIN" ] || return 1 unset hostname config_load system config_foreach system_config system hostname="${hostname:-OpenWrt}" unset args config_load httpd [ "$?" != "0" ] && { uci_set_default httpd <<EOF config 'httpd' option 'port' '80' option 'home' '/www' EOF config_load httpd } config_foreach httpd_config httpd } stop() { killall httpd }

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#!/bin/sh /etc/rc.common
# Copyright (C) 2006 OpenWrt.org

START=50
HTTPD_BIN="/usr/sbin/httpd"

system_config() {
 local cfg="$1"
 config_get hostname "$cfg" hostname
}

httpd_config() {
 local cfg="$1"
 local c_file port realm home args
 config_get c_file "$cfg" c_file
 [ -n "$c_file" -a -f "$c_file" ] && append args "-c \"$c_file\""
 config_get port "$cfg" port
 append args "-p ${port:-80}"
 config_get home "$cfg" home
 home="${home:-/www}"
 [ -d "$home" ] || return 1
 append args "-h \"$home\""
 config_get realm "$cfg" realm
 realm="${realm:-$hostname}"
 append args "-r \"$realm\""
############################## config_get path "$cfg" path path="${path:-$path}" append args "-R \"$path\"" config_get host "$cfg" host host="${host:-$host}" append args "-H \"$host\"" ############################## eval "$HTTPD_BIN $args"
}
start() {
 [ -x "$HTTPD_BIN" ] || return 1
unset hostname
 config_load system
 config_foreach system_config system
 hostname="${hostname:-OpenWrt}"
 unset args
 config_load httpd
 [ "$?" != "0" ] && {
 uci_set_default httpd <<EOF
config 'httpd'
 option 'port' '80'
 option 'home' '/www'
EOF
 config_load httpd
 }
 config_foreach httpd_config httpd
}
stop() {
 killall httpd
}

Staci pridat vyznacenou cast. Po rebootu by to uz melo fungovat. Dalsim resenim by mohlo byt pouziti jineho weboveho serveru.

OpenWrt KAMIKAZE r13658

Dalsi clanky o OpenWrt.

Martin Vancl

S Linuxem na vecne casy a nikdy jinak.

OpenWrt 1: HTTP presmerovani s BusyBoxem (KAMIKAZE)

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