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="$3"
  38         local days bits country state location organization commonname
  39
  40         config_get days       "$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 organization "$cfg" organization
  46         config_get commonname "$cfg" commonname
  47         config_get key_type   "$cfg" key_type
  48         config_get ec_curve   "$cfg" ec_curve
  49
  50         # Prefer px5g for certificate generation (existence evaluated last)
  51         local GENKEY_CMD=""
  52         local KEY_OPTS="rsa:${bits:-2048}"
  53         local UNIQUEID=$(dd if=/dev/urandom bs=1 count=4 | hexdump -e '1/1 "%02x"')
  54         [ "$key_type" = "ec" ] && KEY_OPTS="ec -pkeyopt ec_paramgen_curve:${ec_curve:-P-256}"
  55         [ -x "$OPENSSL_BIN" ] && GENKEY_CMD="$OPENSSL_BIN req -x509 -sha256 -outform der -nodes"
  56         [ -x "$PX5G_BIN" ] && GENKEY_CMD="$PX5G_BIN selfsigned -der"
  57         [ -n "$GENKEY_CMD" ] && {
  58                 $GENKEY_CMD \
  59                         -days ${days:-730} -newkey ${KEY_OPTS} -keyout "${UHTTPD_KEY}.new" -out "${UHTTPD_CERT}.new" \
  60                         -subj /C="${country:-ZZ}"/ST="${state:-Somewhere}"/L="${location:-Unknown}"/O="${organization:-OpenWrt$UNIQUEID}"/CN="${commonname:-OpenWrt}"
  61                 sync
  62                 mv "${UHTTPD_KEY}.new" "${UHTTPD_KEY}"
  63                 mv "${UHTTPD_CERT}.new" "${UHTTPD_CERT}"
  64         }
  65 }
  66
  67 create_httpauth() {
  68         local cfg="$1"
  69         local prefix username password
  70
  71         config_get prefix "$cfg" prefix
  72         config_get username "$cfg" username
  73         config_get password "$cfg" password
  74
  75         if [ -z "$prefix" ] || [ -z "$username" ] || [ -z "$password" ]; then
  76                 return
  77         fi
  78         echo "${prefix}:${username}:${password}" >>$httpdconf
  79         haveauth=1
  80 }
  81
  82 append_lua_prefix() {
  83         local v="$1"
  84         local prefix="${v%%=*}"
  85         local handler="${v#*=}"
  86
  87         if [ "$prefix" != "$handler" ] && [ -n "$prefix" ] && [ -f "$handler" ]; then
  88                 procd_append_param command -l "$prefix" -L "$handler"
  89         else
  90                 echo "Skipping invalid Lua prefix \"$v\"" >&2
  91         fi
  92 }
  93
  94 append_ucode_prefix() {
  95         local v="$1"
  96         local prefix="${v%%=*}"
  97         local handler="${v#*=}"
  98
  99         if [ "$prefix" != "$handler" ] && [ -n "$prefix" ] && [ -f "$handler" ]; then
 100                 procd_append_param command -o "$prefix" -O "$handler"
 101         else
 102                 echo "Skipping invalid ucode prefix \"$v\"" >&2
 103         fi
 104 }
 105
 106 start_instance()
 107 {
 108         UHTTPD_CERT=""
 109         UHTTPD_KEY=""
 110
 111         local cfg="$1"
 112         local realm="$(uci_get system.@system[0].hostname)"
 113         local listen http https interpreter indexes path handler httpdconf haveauth
 114         local enabled
 115
 116         config_get_bool enabled "$cfg" 'enabled' 1
 117         [ $enabled -gt 0 ] || return
 118
 119         procd_open_instance
 120         procd_set_param respawn
 121         procd_set_param stderr 1
 122         procd_set_param command "$UHTTPD_BIN" -f
 123
 124         config_get config "$cfg" config
 125         if [ -z "$config" ]; then
 126                 mkdir -p /var/etc/uhttpd
 127                 httpdconf="/var/etc/uhttpd/httpd.${cfg}.conf"
 128                 rm -f ${httpdconf}
 129                 config_list_foreach "$cfg" httpauth create_httpauth
 130                 if [ "$haveauth" = "1" ]; then
 131                         procd_append_param command -c ${httpdconf}
 132                         [ -r /etc/httpd.conf ] && cat /etc/httpd.conf >>/var/etc/uhttpd/httpd.${cfg}.conf
 133                 fi
 134         fi
 135
 136         append_arg "$cfg" home "-h"
 137         append_arg "$cfg" realm "-r" "${realm:-OpenWrt}"
 138         append_arg "$cfg" config "-c"
 139         append_arg "$cfg" cgi_prefix "-x"
 140         [ -f /usr/lib/uhttpd_lua.so ] && {
 141                 local len
 142                 config_get len "$cfg" lua_prefix_LENGTH
 143
 144                 if [ -n "$len" ]; then
 145                         config_list_foreach "$cfg" lua_prefix append_lua_prefix
 146                 else
 147                         config_get prefix "$cfg" lua_prefix
 148                         config_get handler "$cfg" lua_handler
 149                         append_lua_prefix "$prefix=$handler"
 150                 fi
 151         }
 152         [ -f /usr/lib/uhttpd_ubus.so ] && {
 153                 append_arg "$cfg" ubus_prefix "-u"
 154                 append_arg "$cfg" ubus_socket "-U"
 155                 append_bool "$cfg" ubus_cors "-X" 0
 156         }
 157         [ -f /usr/lib/uhttpd_ucode.so ] && {
 158                 config_list_foreach "$cfg" ucode_prefix append_ucode_prefix
 159         }
 160         append_arg "$cfg" script_timeout "-t"
 161         append_arg "$cfg" network_timeout "-T"
 162         append_arg "$cfg" http_keepalive "-k"
 163         append_arg "$cfg" tcp_keepalive "-A"
 164         append_arg "$cfg" error_page "-E"
 165         append_arg "$cfg" max_requests "-n" 3
 166         append_arg "$cfg" max_connections "-N"
 167
 168         append_bool "$cfg" no_ubusauth "-a" 0
 169         append_bool "$cfg" no_symlinks "-S" 0
 170         append_bool "$cfg" no_dirlists "-D" 0
 171         append_bool "$cfg" rfc1918_filter "-R" 0
 172
 173         config_get alias_list "$cfg" alias
 174         for alias in $alias_list; do
 175                  procd_append_param command -y "$alias"
 176         done
 177
 178         config_get http "$cfg" listen_http
 179         for listen in $http; do
 180                  procd_append_param command -p "$listen"
 181         done
 182
 183         config_get interpreter "$cfg" interpreter
 184         for path in $interpreter; do
 185                 procd_append_param command -i "$path"
 186         done
 187
 188         config_get indexes "$cfg" index_page
 189         for path in $indexes; do
 190                 procd_append_param command -I "$path"
 191         done
 192
 193         config_get https "$cfg" listen_https
 194         config_get UHTTPD_KEY  "$cfg" key  /etc/uhttpd.key
 195         config_get UHTTPD_CERT "$cfg" cert /etc/uhttpd.crt
 196
 197         [ -f /lib/libustream-ssl.so ] && [ -n "$https" ] && {
 198                 [ -s "$UHTTPD_CERT" -a -s "$UHTTPD_KEY" ] || {
 199                         config_foreach generate_keys cert
 200                 }
 201
 202                 [ -f "$UHTTPD_CERT" -a -f "$UHTTPD_KEY" ] && {
 203                         append_arg "$cfg" cert "-C"
 204                         append_arg "$cfg" key  "-K"
 205
 206                         for listen in $https; do
 207                                 procd_append_param command -s "$listen"
 208                         done
 209                 }
 210
 211                 append_bool "$cfg" redirect_https "-q" 0
 212         }
 213
 214         config_get json_script "$cfg" json_script
 215         for file in $json_script; do
 216                 [ -s "$file" ] && procd_append_param command -H "$file"
 217         done
 218
 219         procd_close_instance
 220 }
 221
 222 uhttpd_interfaces()
 223 {
 224         local cfg="$1"
 225         local http https listen ips
 226
 227         config_get http "$cfg" listen_http
 228         config_get https "$cfg" listen_https
 229         for listen in $http $https; do
 230                 case "$listen" in
 231                 "" |\
 232                 "0.0.0.0:"* |\
 233                 "[::]:"* )
 234                         continue
 235                         ;;
 236                 *.*.*.*:*)
 237                         ips="$ips ${listen%%:*}
 238 "
 239                         ;;
 240                 \[*\]:* )
 241                         listen="${listen:1}"
 242                         ips="$ips ${listen%%]:*}
 243 "
 244                         ;;
 245                 esac
 246         done
 247         ips="$( echo "$ips" | sort -u )"
 248         echo "$ips"
 249 }
 250
 251 resolve_iface()
 252 {
 253         local cfg="$1"
 254         local ipaddr ipaddrs testip="$2"
 255
 256         config_get ipaddrs "$cfg" ipaddr
 257         for ipaddr in $ipaddrs; do
 258                 [ "$ipaddr" = "$testip" ] && echo "$cfg"
 259         done
 260 }
 261
 262 get_interface_by_ip()
 263 {
 264         config_load network
 265         config_foreach resolve_iface interface "$@"
 266 }
 267
 268 service_triggers()
 269 {
 270         local iface ifaces all=0
 271
 272         procd_add_reload_trigger "uhttpd"
 273         procd_add_raw_trigger acme.renew 5000 /etc/init.d/uhttpd reload
 274
 275         config_load uhttpd
 276         ips="$(config_foreach uhttpd_interfaces uhttpd)"
 277         [ -z "$ips" ] && return 0
 278
 279         for ip in $ips; do
 280                 iface="$(get_interface_by_ip $ip)"
 281                 [ -z "$iface" ] && all=1
 282                 ifaces="$ifaces $iface"
 283         done
 284
 285         if [ "$all" = "1" ]; then
 286                 procd_add_raw_trigger "interface.*.up" 1000 /etc/init.d/uhttpd start
 287         else
 288                 for iface in $ifaces; do
 289                         procd_add_raw_trigger "interface.$iface.up" 1000 /etc/init.d/uhttpd start
 290                 done
 291         fi
 292 }
 293
 294 start_service() {
 295         config_load uhttpd
 296         config_foreach start_instance uhttpd
 297 }