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 start_instance()
  95 {
  96         UHTTPD_CERT=""
  97         UHTTPD_KEY=""
  98
  99         local cfg="$1"
 100         local realm="$(uci_get system.@system[0].hostname)"
 101         local listen http https interpreter indexes path handler httpdconf haveauth
 102         local enabled
 103
 104         config_get_bool enabled "$cfg" 'enabled' 1
 105         [ $enabled -gt 0 ] || return
 106
 107         procd_open_instance
 108         procd_set_param respawn
 109         procd_set_param stderr 1
 110         procd_set_param command "$UHTTPD_BIN" -f
 111
 112         config_get config "$cfg" config
 113         if [ -z "$config" ]; then
 114                 mkdir -p /var/etc/uhttpd
 115                 httpdconf="/var/etc/uhttpd/httpd.${cfg}.conf"
 116                 rm -f ${httpdconf}
 117                 config_list_foreach "$cfg" httpauth create_httpauth
 118                 if [ "$haveauth" = "1" ]; then
 119                         procd_append_param command -c ${httpdconf}
 120                         [ -r /etc/httpd.conf ] && cat /etc/httpd.conf >>/var/etc/uhttpd/httpd.${cfg}.conf
 121                 fi
 122         fi
 123
 124         append_arg "$cfg" home "-h"
 125         append_arg "$cfg" realm "-r" "${realm:-OpenWrt}"
 126         append_arg "$cfg" config "-c"
 127         append_arg "$cfg" cgi_prefix "-x"
 128         [ -f /usr/lib/uhttpd_lua.so ] && {
 129                 local len
 130                 config_get len "$cfg" lua_prefix_LENGTH
 131
 132                 if [ -n "$len" ]; then
 133                         config_list_foreach "$cfg" lua_prefix append_lua_prefix
 134                 else
 135                         config_get prefix "$cfg" lua_prefix
 136                         config_get handler "$cfg" lua_handler
 137                         append_lua_prefix "$prefix=$handler"
 138                 fi
 139         }
 140         [ -f /usr/lib/uhttpd_ubus.so ] && {
 141                 append_arg "$cfg" ubus_prefix "-u"
 142                 append_arg "$cfg" ubus_socket "-U"
 143                 append_bool "$cfg" ubus_cors "-X" 0
 144         }
 145         append_arg "$cfg" script_timeout "-t"
 146         append_arg "$cfg" network_timeout "-T"
 147         append_arg "$cfg" http_keepalive "-k"
 148         append_arg "$cfg" tcp_keepalive "-A"
 149         append_arg "$cfg" error_page "-E"
 150         append_arg "$cfg" max_requests "-n" 3
 151         append_arg "$cfg" max_connections "-N"
 152
 153         append_bool "$cfg" no_ubusauth "-a" 0
 154         append_bool "$cfg" no_symlinks "-S" 0
 155         append_bool "$cfg" no_dirlists "-D" 0
 156         append_bool "$cfg" rfc1918_filter "-R" 0
 157
 158         config_get alias_list "$cfg" alias
 159         for alias in $alias_list; do
 160                  procd_append_param command -y "$alias"
 161         done
 162
 163         config_get http "$cfg" listen_http
 164         for listen in $http; do
 165                  procd_append_param command -p "$listen"
 166         done
 167
 168         config_get interpreter "$cfg" interpreter
 169         for path in $interpreter; do
 170                 procd_append_param command -i "$path"
 171         done
 172
 173         config_get indexes "$cfg" index_page
 174         for path in $indexes; do
 175                 procd_append_param command -I "$path"
 176         done
 177
 178         config_get https "$cfg" listen_https
 179         config_get UHTTPD_KEY  "$cfg" key  /etc/uhttpd.key
 180         config_get UHTTPD_CERT "$cfg" cert /etc/uhttpd.crt
 181
 182         [ -f /lib/libustream-ssl.so ] && [ -n "$https" ] && {
 183                 [ -s "$UHTTPD_CERT" -a -s "$UHTTPD_KEY" ] || {
 184                         config_foreach generate_keys cert
 185                 }
 186
 187                 [ -f "$UHTTPD_CERT" -a -f "$UHTTPD_KEY" ] && {
 188                         append_arg "$cfg" cert "-C"
 189                         append_arg "$cfg" key  "-K"
 190
 191                         for listen in $https; do
 192                                 procd_append_param command -s "$listen"
 193                         done
 194                 }
 195
 196                 append_bool "$cfg" redirect_https "-q" 0
 197         }
 198
 199         config_get json_script "$cfg" json_script
 200         for file in $json_script; do
 201                 [ -s "$file" ] && procd_append_param command -H "$file"
 202         done
 203
 204         procd_close_instance
 205 }
 206
 207 service_triggers()
 208 {
 209         procd_add_reload_trigger "uhttpd"
 210 }
 211
 212 start_service() {
 213         config_load uhttpd
 214         config_foreach start_instance uhttpd
 215 }