package/base-files/files/lib/functions/network.sh

   1 # 1: destination variable
   2 # 2: interface
   3 # 3: path
   4 # 4: separator
   5 # 5: limit
   6 __network_ifstatus() {
   7         local __tmp
   8
   9         [ -z "$__NETWORK_CACHE" ] && {
  10                 __tmp="$(ubus call network.interface dump 2>&1)"
  11                 case "$?" in
  12                         4) : ;;
  13                         0) export __NETWORK_CACHE="$__tmp" ;;
  14                         *) echo "$__tmp" >&2 ;;
  15                 esac
  16         }
  17
  18         __tmp="$(jsonfilter ${4:+-F "$4"} ${5:+-l "$5"} -s "${__NETWORK_CACHE:-{}}" -e "$1=@.interface${2:+[@.interface='$2']}$3")"
  19
  20         [ -z "$__tmp" ] && \
  21                 unset "$1" && \
  22                 return 1
  23
  24         eval "$__tmp"
  25 }
  26
  27 # determine first IPv4 address of given logical interface
  28 # 1: destination variable
  29 # 2: interface
  30 network_get_ipaddr() {
  31         __network_ifstatus "$1" "$2" "['ipv4-address'][0].address";
  32 }
  33
  34 # determine first IPv6 address of given logical interface
  35 # 1: destination variable
  36 # 2: interface
  37 network_get_ipaddr6() {
  38         __network_ifstatus "$1" "$2" "['ipv6-address'][0].address" || \
  39                 __network_ifstatus "$1" "$2" "['ipv6-prefix-assignment'][0]['local-address'].address" || \
  40                 return 1
  41 }
  42
  43 # determine first IPv4 subnet of given logical interface
  44 # 1: destination variable
  45 # 2: interface
  46 network_get_subnet() {
  47         __network_ifstatus "$1" "$2" "['ipv4-address'][0]['address','mask']" "/"
  48 }
  49
  50 # determine first IPv6 subnet of given logical interface
  51 # 1: destination variable
  52 # 2: interface
  53 network_get_subnet6() {
  54         local __nets __addr
  55
  56         if network_get_subnets6 __nets "$2"; then
  57                 # Attempt to return first non-fe80::/10, non-fc::/7 range
  58                 for __addr in $__nets; do
  59                         case "$__addr" in fe[8ab]?:*|f[cd]??:*)
  60                                 continue
  61                         esac
  62                         export "$1=$__addr"
  63                         return 0
  64                 done
  65
  66                 # Attempt to return first non-fe80::/10 range
  67                 for __addr in $__nets; do
  68                         case "$__addr" in fe[8ab]?:*)
  69                                 continue
  70                         esac
  71                         export "$1=$__addr"
  72                         return 0
  73                 done
  74
  75                 # Return first item
  76                 for __addr in $__nets; do
  77                         export "$1=$__addr"
  78                         return 0
  79                 done
  80         fi
  81
  82         unset "$1"
  83         return 1
  84 }
  85
  86 # determine first IPv6 prefix of given logical interface
  87 # 1: destination variable
  88 # 2: interface
  89 network_get_prefix6() {
  90         __network_ifstatus "$1" "$2" "['ipv6-prefix'][0]['address','mask']" "/"
  91 }
  92
  93 # determine all IPv4 addresses of given logical interface
  94 # 1: destination variable
  95 # 2: interface
  96 network_get_ipaddrs() {
  97         __network_ifstatus "$1" "$2" "['ipv4-address'][*].address"
  98 }
  99
 100 # determine all IPv6 addresses of given logical interface
 101 # 1: destination variable
 102 # 2: interface
 103 network_get_ipaddrs6() {
 104         local __addr
 105         local __list=""
 106
 107         if __network_ifstatus "__addr" "$2" "['ipv6-address'][*].address"; then
 108                 for __addr in $__addr; do
 109                         __list="${__list:+$__list }${__addr}"
 110                 done
 111         fi
 112
 113         if __network_ifstatus "__addr" "$2" "['ipv6-prefix-assignment'][*]['local-address'].address"; then
 114                 for __addr in $__addr; do
 115                         __list="${__list:+$__list }${__addr}"
 116                 done
 117         fi
 118
 119         if [ -n "$__list" ]; then
 120                 export "$1=$__list"
 121                 return 0
 122         fi
 123
 124         unset "$1"
 125         return 1
 126 }
 127
 128 # determine all IP addresses of given logical interface
 129 # 1: destination variable
 130 # 2: interface
 131 network_get_ipaddrs_all() {
 132         local __addr __addr6
 133
 134         network_get_ipaddrs __addr "$2"
 135         network_get_ipaddrs6 __addr6 "$2"
 136
 137         if [ -n "$__addr" -o -n "$__addr6" ]; then
 138                 export "$1=${__addr:+$__addr }$__addr6"
 139                 return 0
 140         fi
 141
 142         unset "$1"
 143         return 1
 144 }
 145
 146 # determine all IPv4 subnets of given logical interface
 147 # 1: destination variable
 148 # 2: interface
 149 network_get_subnets() {
 150         __network_ifstatus "$1" "$2" "['ipv4-address'][*]['address','mask']" "/ "
 151 }
 152
 153 # determine all IPv6 subnets of given logical interface
 154 # 1: destination variable
 155 # 2: interface
 156 network_get_subnets6() {
 157         local __addr __mask
 158         local __list=""
 159
 160         if __network_ifstatus "__addr" "$2" "['ipv6-address'][*]['address','mask']" "/ "; then
 161                 for __addr in $__addr; do
 162                         __list="${__list:+$__list }${__addr}"
 163                 done
 164         fi
 165
 166         if __network_ifstatus "__addr" "$2" "['ipv6-prefix-assignment'][*]['local-address'].address" && \
 167            __network_ifstatus "__mask" "$2" "['ipv6-prefix-assignment'][*].mask"; then
 168                 for __addr in $__addr; do
 169                         __list="${__list:+$__list }${__addr}/${__mask%% *}"
 170                         __mask="${__mask#* }"
 171                 done
 172         fi
 173
 174         if [ -n "$__list" ]; then
 175                 export "$1=$__list"
 176                 return 0
 177         fi
 178
 179         unset "$1"
 180         return 1
 181 }
 182
 183 # determine all IPv6 prefixes of given logical interface
 184 # 1: destination variable
 185 # 2: interface
 186 network_get_prefixes6() {
 187         __network_ifstatus "$1" "$2" "['ipv6-prefix'][*]['address','mask']" "/ "
 188 }
 189
 190 # determine IPv4 gateway of given logical interface
 191 # 1: destination variable
 192 # 2: interface
 193 # 3: consider inactive gateway if "true" (optional)
 194 network_get_gateway() {
 195         __network_ifstatus "$1" "$2" ".route[@.target='0.0.0.0' && !@.table].nexthop" "" 1 && \
 196                 return 0
 197
 198         [ "$3" = 1 -o "$3" = "true" ] && \
 199                 __network_ifstatus "$1" "$2" ".inactive.route[@.target='0.0.0.0' && !@.table].nexthop" "" 1
 200 }
 201
 202 # determine IPv6 gateway of given logical interface
 203 # 1: destination variable
 204 # 2: interface
 205 # 3: consider inactive gateway if "true" (optional)
 206 network_get_gateway6() {
 207         __network_ifstatus "$1" "$2" ".route[@.target='::' && !@.table].nexthop" "" 1 && \
 208                 return 0
 209
 210         [ "$3" = 1 -o "$3" = "true" ] && \
 211                 __network_ifstatus "$1" "$2" ".inactive.route[@.target='::' && !@.table].nexthop" "" 1
 212 }
 213
 214 # determine the DNS servers of the given logical interface
 215 # 1: destination variable
 216 # 2: interface
 217 # 3: consider inactive servers if "true" (optional)
 218 network_get_dnsserver() {
 219         __network_ifstatus "$1" "$2" "['dns-server'][*]" && return 0
 220
 221         [ "$3" = 1 -o "$3" = "true" ] && \
 222                 __network_ifstatus "$1" "$2" ".inactive['dns-server'][*]"
 223 }
 224
 225 # determine the domains of the given logical interface
 226 # 1: destination variable
 227 # 2: interface
 228 # 3: consider inactive domains if "true" (optional)
 229 network_get_dnssearch() {
 230         __network_ifstatus "$1" "$2" "['dns-search'][*]" && return 0
 231
 232         [ "$3" = 1 -o "$3" = "true" ] && \
 233                 __network_ifstatus "$1" "$2" ".inactive['dns-search'][*]"
 234 }
 235
 236
 237 # 1: destination variable
 238 # 2: addr
 239 # 3: inactive
 240 __network_wan()
 241 {
 242         __network_ifstatus "$1" "" \
 243                 "[@.route[@.target='$2' && !@.table]].interface" "" 1 && \
 244                         return 0
 245
 246         [ "$3" = 1 -o "$3" = "true" ] && \
 247                 __network_ifstatus "$1" "" \
 248                         "[@.inactive.route[@.target='$2' && !@.table]].interface" "" 1
 249 }
 250
 251 # find the logical interface which holds the current IPv4 default route
 252 # 1: destination variable
 253 # 2: consider inactive default routes if "true" (optional)
 254 network_find_wan() { __network_wan "$1" "0.0.0.0" "$2"; }
 255
 256 # find the logical interface which holds the current IPv6 default route
 257 # 1: destination variable
 258 # 2: consider inactive dafault routes if "true" (optional)
 259 network_find_wan6() { __network_wan "$1" "::" "$2"; }
 260
 261 # test whether the given logical interface is running
 262 # 1: interface
 263 network_is_up()
 264 {
 265         local __up
 266         __network_ifstatus "__up" "$1" ".up" && [ "$__up" = 1 ]
 267 }
 268
 269 # determine the protocol of the given logical interface
 270 # 1: destination variable
 271 # 2: interface
 272 network_get_protocol() { __network_ifstatus "$1" "$2" ".proto"; }
 273
 274 # determine the metric of the given logical interface
 275 # 1: destination variable
 276 # 2: interface
 277 network_get_metric() { __network_ifstatus "$1" "$2" ".metric"; }
 278
 279 # determine the layer 3 linux network device of the given logical interface
 280 # 1: destination variable
 281 # 2: interface
 282 network_get_device() { __network_ifstatus "$1" "$2" ".l3_device"; }
 283
 284 # determine the layer 2 linux network device of the given logical interface
 285 # 1: destination variable
 286 # 2: interface
 287 network_get_physdev() { __network_ifstatus "$1" "$2" ".device"; }
 288
 289 # defer netifd actions on the given linux network device
 290 # 1: device name
 291 network_defer_device()
 292 {
 293         ubus call network.device set_state \
 294                 "$(printf '{ "name": "%s", "defer": true }' "$1")" 2>/dev/null
 295 }
 296
 297 # continue netifd actions on the given linux network device
 298 # 1: device name
 299 network_ready_device()
 300 {
 301         ubus call network.device set_state \
 302                 "$(printf '{ "name": "%s", "defer": false }' "$1")" 2>/dev/null
 303 }
 304
 305 # flush the internal value cache to force re-reading values from ubus
 306 network_flush_cache() { unset __NETWORK_CACHE; }