package/network/services/uhttpd/files/uhttpd.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2010 Jo-Philipp Wich
   3
   4 START=50
   5
   6 USE_PROCD=1
   7
   8 UHTTPD_BIN="/usr/sbin/uhttpd"
   9 PX5G_BIN="/usr/sbin/px5g"
  10 OPENSSL_BIN="/usr/bin/openssl"
  11
  12 append_arg() {
  13         local cfg="$1"
  14         local var="$2"
  15         local opt="$3"
  16         local def="$4"
  17         local val
  18
  19         config_get val "$cfg" "$var"
  20         [ -n "$val" -o -n "$def" ] && procd_append_param command "$opt" "${val:-$def}"
  21 }
  22
  23 append_bool() {
  24         local cfg="$1"
  25         local var="$2"
  26         local opt="$3"
  27         local def="$4"
  28         local val
  29
  30         config_get_bool val "$cfg" "$var" "$def"
  31         [ "$val" = 1 ] && procd_append_param command "$opt"
  32 }
  33
  34 generate_keys() {
  35         local cfg="$1"
  36         local key="$2"
  37         local crt="$3"
  38         local days bits country state location commonname
  39
  40         config_get days       "$cfg" days
  41         config_get bits       "$cfg" bits
  42         config_get country    "$cfg" country
  43         config_get state      "$cfg" state
  44         config_get location   "$cfg" location
  45         config_get commonname "$cfg" commonname
  46         config_get key_type   "$cfg" key_type
  47         config_get ec_curve   "$cfg" ec_curve
  48
  49         # Prefer px5g for certificate generation (existence evaluated last)
  50         local GENKEY_CMD=""
  51         local KEY_OPTS="rsa:${bits:-2048}"
  52         local UNIQUEID=$(dd if=/dev/urandom bs=1 count=4 | hexdump -e '1/1 "%02x"')
  53         [ "$key_type" = "ec" ] && KEY_OPTS="ec -pkeyopt ec_paramgen_curve:${ec_curve:-P-256}"
  54         [ -x "$OPENSSL_BIN" ] && GENKEY_CMD="$OPENSSL_BIN req -x509 -sha256 -outform der -nodes"
  55         [ -x "$PX5G_BIN" ] && GENKEY_CMD="$PX5G_BIN selfsigned -der"
  56         [ -n "$GENKEY_CMD" ] && {
  57                 $GENKEY_CMD \
  58                         -days ${days:-730} -newkey ${KEY_OPTS} -keyout "${UHTTPD_KEY}.new" -out "${UHTTPD_CERT}.new" \
  59                         -subj /C="${country:-ZZ}"/ST="${state:-Somewhere}"/L="${location:-Unknown}"/O="${commonname:-OpenWrt}$UNIQUEID"/CN="${commonname:-OpenWrt}"
  60                 sync
  61                 mv "${UHTTPD_KEY}.new" "${UHTTPD_KEY}"
  62                 mv "${UHTTPD_CERT}.new" "${UHTTPD_CERT}"
  63         }
  64 }
  65
  66 create_httpauth() {
  67         local cfg="$1"
  68         local prefix username password
  69
  70         config_get prefix "$cfg" prefix
  71         config_get username "$cfg" username
  72         config_get password "$cfg" password
  73
  74         if [ -z "$prefix" ] || [ -z "$username" ] || [ -z "$password" ]; then
  75                 return
  76         fi
  77         echo "${prefix}:${username}:${password}" >>$httpdconf
  78         haveauth=1
  79 }
  80
  81 append_lua_prefix() {
  82         local v="$1"
  83         local prefix="${v%%=*}"
  84         local handler="${v#*=}"
  85
  86         if [ "$prefix" != "$handler" ] && [ -n "$prefix" ] && [ -f "$handler" ]; then
  87                 procd_append_param command -l "$prefix" -L "$handler"
  88         else
  89                 echo "Skipping invalid Lua prefix \"$v\"" >&2
  90         fi
  91 }
  92
  93 start_instance()
  94 {
  95         UHTTPD_CERT=""
  96         UHTTPD_KEY=""
  97
  98         local cfg="$1"
  99         local realm="$(uci_get system.@system[0].hostname)"
 100         local listen http https interpreter indexes path handler httpdconf haveauth
 101         local enabled
 102
 103         config_get_bool enabled "$cfg" 'enabled' 1
 104         [ $enabled -gt 0 ] || return
 105
 106         procd_open_instance
 107         procd_set_param respawn
 108         procd_set_param stderr 1
 109         procd_set_param command "$UHTTPD_BIN" -f
 110
 111         config_get config "$cfg" config
 112         if [ -z "$config" ]; then
 113                 mkdir -p /var/etc/uhttpd
 114                 httpdconf="/var/etc/uhttpd/httpd.${cfg}.conf"
 115                 rm -f ${httpdconf}
 116                 config_list_foreach "$cfg" httpauth create_httpauth
 117                 if [ "$haveauth" = "1" ]; then
 118                         procd_append_param command -c ${httpdconf}
 119                         [ -r /etc/httpd.conf ] && cat /etc/httpd.conf >>/var/etc/uhttpd/httpd.${cfg}.conf
 120                 fi
 121         fi
 122
 123         append_arg "$cfg" home "-h"
 124         append_arg "$cfg" realm "-r" "${realm:-OpenWrt}"
 125         append_arg "$cfg" config "-c"
 126         append_arg "$cfg" cgi_prefix "-x"
 127         [ -f /usr/lib/uhttpd_lua.so ] && {
 128                 local len
 129                 config_get len "$cfg" lua_prefix_LENGTH
 130
 131                 if [ -n "$len" ]; then
 132                         config_list_foreach "$cfg" lua_prefix append_lua_prefix
 133                 else
 134                         config_get prefix "$cfg" lua_prefix
 135                         config_get handler "$cfg" lua_handler
 136                         append_lua_prefix "$prefix=$handler"
 137                 fi
 138         }
 139         [ -f /usr/lib/uhttpd_ubus.so ] && {
 140                 append_arg "$cfg" ubus_prefix "-u"
 141                 append_arg "$cfg" ubus_socket "-U"
 142                 append_bool "$cfg" ubus_cors "-X" 0
 143         }
 144         append_arg "$cfg" script_timeout "-t"
 145         append_arg "$cfg" network_timeout "-T"
 146         append_arg "$cfg" http_keepalive "-k"
 147         append_arg "$cfg" tcp_keepalive "-A"
 148         append_arg "$cfg" error_page "-E"
 149         append_arg "$cfg" max_requests "-n" 3
 150         append_arg "$cfg" max_connections "-N"
 151
 152         append_bool "$cfg" no_ubusauth "-a" 0
 153         append_bool "$cfg" no_symlinks "-S" 0
 154         append_bool "$cfg" no_dirlists "-D" 0
 155         append_bool "$cfg" rfc1918_filter "-R" 0
 156
 157         config_get alias_list "$cfg" alias
 158         for alias in $alias_list; do
 159                  procd_append_param command -y "$alias"
 160         done
 161
 162         config_get http "$cfg" listen_http
 163         for listen in $http; do
 164                  procd_append_param command -p "$listen"
 165         done
 166
 167         config_get interpreter "$cfg" interpreter
 168         for path in $interpreter; do
 169                 procd_append_param command -i "$path"
 170         done
 171
 172         config_get indexes "$cfg" index_page
 173         for path in $indexes; do
 174                 procd_append_param command -I "$path"
 175         done
 176
 177         config_get https "$cfg" listen_https
 178         config_get UHTTPD_KEY  "$cfg" key  /etc/uhttpd.key
 179         config_get UHTTPD_CERT "$cfg" cert /etc/uhttpd.crt
 180
 181         [ -f /lib/libustream-ssl.so ] && [ -n "$https" ] && {
 182                 [ -s "$UHTTPD_CERT" -a -s "$UHTTPD_KEY" ] || {
 183                         config_foreach generate_keys cert
 184                 }
 185
 186                 [ -f "$UHTTPD_CERT" -a -f "$UHTTPD_KEY" ] && {
 187                         append_arg "$cfg" cert "-C"
 188                         append_arg "$cfg" key  "-K"
 189
 190                         for listen in $https; do
 191                                 procd_append_param command -s "$listen"
 192                         done
 193                 }
 194
 195                 append_bool "$cfg" redirect_https "-q" 0
 196         }
 197
 198         for file in /etc/uhttpd/*.json; do
 199                 [ -s "$file" ] && procd_append_param command -H "$file"
 200         done
 201
 202         procd_close_instance
 203 }
 204
 205 service_triggers()
 206 {
 207         procd_add_reload_trigger "uhttpd"
 208 }
 209
 210 start_service() {
 211         config_load uhttpd
 212         config_foreach start_instance uhttpd
 213 }