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