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