| 1 | 7 | simandl | #!/bin/bash |
| 2 | | | # author : Petr Simandl www.simandl.cz |
| 3 | 17 | simandl | # release date : 23/04/2007 |
| 4 | 7 | simandl | # name : sedlo |
| 5 | | | # description : dynamic side routing tables tool |
| 6 | | | # license : GPL |
| 7 | | | |
| 8 | 17 | simandl | sl_version="0.0.4pre8" |
| 9 | 7 | simandl | |
| 10 | | | PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin |
| 11 | | | |
| 12 | | | sl_nmcnf="sedlo.conf" |
| 13 | | | sl_sedlocnf="/etc/$sl_nmcnf" |
| 14 | | | sl_sedlocache="/var/cache/sedlo" |
| 15 | | | |
| 16 | | | sl_rttab="/etc/iproute2/rt_tables" |
| 17 | | | sl_rtnmin=110 |
| 18 | | | sl_rtnmax=200 |
| 19 | 16 | simandl | #all traffic that is handled as internal (CZF traffic) |
| 20 | 7 | simandl | sl_ipnodef="10.0.0.0/8" |
| 21 | 16 | simandl | #this will specify rupriority in rule table |
| 22 | | | sl_priorules=10000 |
| 23 | | | #no default traffic will have rule at higher priority |
| 24 | | | sl_prionodef=$(($sl_priorules - 1)) |
| 25 | 7 | simandl | |
| 26 | | | slm_unknown="Nezname parametry : " |
| 27 | | | |
| 28 | | | sl_ipcmd=`which ip` |
| 29 | | | sl_trcmd=`which tr` |
| 30 | | | sl_wgetcmd=`which wget` |
| 31 | | | sl_hnmcmd=`which hostname` |
| 32 | | | sl_awkcmd=`which awk` |
| 33 | | | sl_catcmd=`which cat` |
| 34 | | | sl_grepcmd=`which grep` |
| 35 | 10 | simandl | sl_diffcmd=`which diff` |
| 36 | 7 | simandl | |
| 37 | | | if [ -e $sl_sedlocnf ] |
| 38 | | | then |
| 39 | | | sl_nop=1 |
| 40 | | | else |
| 41 | | | echo "$sl_sedlocnf not found" |
| 42 | | | exit 1 |
| 43 | | | fi |
| 44 | | | |
| 45 | | | if [ -e $sl_rttab ] |
| 46 | | | then |
| 47 | | | sl_nop=1 |
| 48 | | | else |
| 49 | | | echo "$sl_rttab not found" |
| 50 | | | exit 1 |
| 51 | | | fi |
| 52 | | | |
| 53 | 9 | simandl | sl_murlcfg=`cat $sl_sedlocnf | grep "^mcnf" | uniq | awk '{print $2" "$3" "$4}'` |
| 54 | 7 | simandl | |
| 55 | | | ###################################################################### |
| 56 | 8 | simandl | s_maru() |
| 57 | 7 | simandl | { |
| 58 | | | if [ $scm_info -gt 0 ]; then echo "Managing rules" ; fi |
| 59 | | | |
| 60 | | | sl_rules=`($sl_ipcmd ru ls | $sl_grepcmd -v "from all lookup" | $sl_awkcmd '{print $3"*ru"}' ; \ |
| 61 | | | $sl_catcmd $sl_sedlocache/$sl_nmcnf | $sl_grepcmd "^ip" | $sl_awkcmd '{print $2"*ip"}') | sort | uniq` |
| 62 | | | |
| 63 | | | sl_merged=`echo $sl_rules $sl_ips | sort | uniq` |
| 64 | | | |
| 65 | | | echo $sl_merged |
| 66 | | | |
| 67 | 8 | simandl | } # s_maru |
| 68 | 16 | simandl | |
| 69 | 7 | simandl | ###################################################################### |
| 70 | 16 | simandl | #this will delete all rules at sl_prionodef an sl_priorules priorities |
| 71 | | | s_flruall() |
| 72 | | | { |
| 73 | | | if [ $scm_info -gt 0 ]; then echo "Flushing all rules" ; fi |
| 74 | | | |
| 75 | | | sl_rules=`$sl_ipcmd ru ls | $sl_grepcmd "^"$sl_prionodef":" | $sl_trcmd '[:blank:]' '*'` |
| 76 | | | for sl_rule in $sl_rules |
| 77 | | | do |
| 78 | | | sl_ipgws=`echo $sl_rule | $sl_awkcmd -F '*' '{print $2,$3,$4,$5,$6,$7}'` |
| 79 | | | $sl_ipcmd ru del $sl_ipgws |
| 80 | | | #this should make faster applying of new routing tables |
| 81 | | | $sl_ipcmd ro flush cache |
| 82 | | | done |
| 83 | | | |
| 84 | | | sl_rules=`$sl_ipcmd ru ls | $sl_grepcmd "^"$sl_priorules":" | $sl_trcmd '[:blank:]' '*'` |
| 85 | | | for sl_rule in $sl_rules |
| 86 | | | do |
| 87 | | | sl_ipgws=`echo $sl_rule | $sl_awkcmd -F '*' '{print $2,$3,$4,$5,$6,$7}'` |
| 88 | | | $sl_ipcmd ru del $sl_ipgws |
| 89 | | | #this should make faster applying of new routing tables |
| 90 | | | $sl_ipcmd ro flush cache |
| 91 | | | done |
| 92 | | | |
| 93 | | | } # s_flruall |
| 94 | | | |
| 95 | | | ###################################################################### |
| 96 | 7 | simandl | s_flru() |
| 97 | | | { |
| 98 | | | if [ $scm_info -gt 0 ]; then echo "Flushing all rules" ; fi |
| 99 | | | |
| 100 | 16 | simandl | sl_rules=`$sl_ipcmd ru ls | $sl_grepcmd ^$sl_priorules":" | $sl_trcmd '[:blank:]' '*'` |
| 101 | 7 | simandl | |
| 102 | | | for sl_rule in $sl_rules |
| 103 | | | do |
| 104 | | | sl_ipgws=`echo $sl_rule | $sl_awkcmd -F '*' '{print $2,$3,$4,$5,$6,$7}'` |
| 105 | | | $sl_ipcmd ru del $sl_ipgws |
| 106 | 16 | simandl | #this should make faster applying of new routing tables |
| 107 | | | $sl_ipcmd ro flush cache |
| 108 | 7 | simandl | done |
| 109 | | | |
| 110 | | | } # s_flru |
| 111 | 8 | simandl | |
| 112 | 7 | simandl | ###################################################################### |
| 113 | 16 | simandl | s_checknodefru() |
| 114 | | | { |
| 115 | | | #checking if we have present nodef rule and if not we create it |
| 116 | | | sl_nodefrule=`$sl_ipcmd ru ls | $sl_grepcmd "^"$sl_prionodef":" | $sl_trcmd '[:blank:]' '*'` |
| 117 | | | #echo $sl_nodefrule |
| 118 | | | if [ "$sl_nodefrule x" == " x" ] |
| 119 | | | then |
| 120 | | | if [ $scm_info -gt 0 ]; then echo "Creating rule for nodef route" ; fi |
| 121 | | | $sl_ipcmd ru add from $sl_ipnodef to $sl_ipnodef lookup main prio $sl_prionodef |
| 122 | | | echo "delam novou" |
| 123 | | | fi |
| 124 | | | |
| 125 | | | } |
| 126 | | | |
| 127 | | | ###################################################################### |
| 128 | 10 | simandl | # here we get each ip and we create a rule to send this ip to a |
| 129 | | | # certain table |
| 130 | | | # this routine can be skipped when the number of ips and ip directions |
| 131 | | | # are still the same = old and new configs are the same |
| 132 | 7 | simandl | s_fillrules() |
| 133 | | | { |
| 134 | 8 | simandl | |
| 135 | 16 | simandl | #this will check no default rule if exists and if not it will be created |
| 136 | | | s_checknodefru |
| 137 | | | |
| 138 | 8 | simandl | #flush old rules before filling new ones |
| 139 | | | #not so nice solution - it is planned to change just what's necessary |
| 140 | | | #by s_maru |
| 141 | 17 | simandl | #s_flru |
| 142 | 7 | simandl | |
| 143 | 17 | simandl | if [ $scm_info -gt 0 ]; then echo "Checking rules for ips" ; fi |
| 144 | 7 | simandl | |
| 145 | | | sl_ips=`$sl_catcmd $sl_sedlocache/$sl_nmcnf | $sl_grepcmd "^ip" | $sl_awkcmd '{print $2"*"$4"*"$5"*"$6}'` |
| 146 | 17 | simandl | sl_rules=`$sl_ipcmd ru ls | $sl_grepcmd ^$sl_priorules":" | $sl_trcmd '[:blank:]' '*'` |
| 147 | 7 | simandl | |
| 148 | 17 | simandl | |
| 149 | | | |
| 150 | | | #for all IPs we check and leave, change or create rule |
| 151 | 7 | simandl | for sl_ip in $sl_ips |
| 152 | | | do |
| 153 | | | sl_ipn=`echo $sl_ip | $sl_awkcmd -F '*' '{print $1}'` |
| 154 | | | sl_ipgws=`echo $sl_ip | $sl_awkcmd -F '*' '{print $2,$3,$4}'` |
| 155 | | | sl_ok="no" |
| 156 | 17 | simandl | #for all GWs we check rules |
| 157 | 7 | simandl | for sl_ipgw in $sl_ipgws |
| 158 | | | do |
| 159 | | | sl_tbl=`$sl_ipcmd ro ls ta $sl_ipgw` |
| 160 | 17 | simandl | #check if table exists |
| 161 | 7 | simandl | if [ "$sl_tbl x" != " x" ] && [ "$sl_ok" = "no" ] |
| 162 | | | then |
| 163 | 17 | simandl | #we have IP and GW table |
| 164 | | | #check if the rule alredady exists |
| 165 | | | sl_oldrule=`echo $sl_rules | $sl_trcmd " " "\n" | $sl_grepcmd "\*"$sl_ipn"\*"` |
| 166 | | | sl_exactrule=`echo $sl_oldrule | $sl_trcmd " " "\n" | $sl_grepcmd "\*"$sl_ipgw"\*"` |
| 167 | | | if [ "$sl_exactrule x" == " x" ] |
| 168 | | | then |
| 169 | | | #exact rule doesn't exist so we check if an old rule for this IP is present |
| 170 | | | if [ "$sl_oldrule x" != " x" ] |
| 171 | | | then |
| 172 | | | #some old rule(s) for IP is present so we delete it |
| 173 | | | for sl_rule in $sl_oldrule |
| 174 | | | do |
| 175 | | | sl_ipgws=`echo $sl_rule | $sl_awkcmd -F '*' '{print $2,$3,$4,$5,$6,$7}'` |
| 176 | | | if [ $scm_info -gt 0 ]; then echo "Deleting old rule $sl_ipgws" ; fi |
| 177 | | | $sl_ipcmd ru del $sl_ipgws |
| 178 | | | #this should make faster applying of new routing tables |
| 179 | | | $sl_ipcmd ro flush cache |
| 180 | | | done |
| 181 | | | fi |
| 182 | | | |
| 183 | | | if [ $scm_info -gt 0 ]; then echo "Creating new rule to send $sl_ipn to table $sl_ipgw" ; fi |
| 184 | | | $sl_ipcmd ru add from $sl_ipn lookup $sl_ipgw prio $sl_priorules |
| 185 | | | |
| 186 | | | else |
| 187 | | | if [ $scm_info -gt 1 ]; then echo "Rule to send $sl_ipn to table $sl_ipgw already exists" ; fi |
| 188 | | | fi |
| 189 | 7 | simandl | sl_ok="yes" |
| 190 | | | else |
| 191 | 17 | simandl | #we have no table |
| 192 | 7 | simandl | if [ "$sl_ok" = "no" ] |
| 193 | | | then |
| 194 | | | if [ $scm_info -gt 1 ]; then echo "For $sl_ipn table $sl_ipgw not used because it is empty" ; fi |
| 195 | | | else |
| 196 | 16 | simandl | if [ $scm_info -gt 1 ]; then echo "For $sl_ipn table $sl_ipgw not used because it has lower priority" ; fi |
| 197 | 7 | simandl | fi |
| 198 | | | fi |
| 199 | | | done |
| 200 | | | done |
| 201 | | | |
| 202 | 17 | simandl | #finally we check all rules and if there is a rule without IP from config we delete it |
| 203 | | | for sl_rule in $sl_rules |
| 204 | | | do |
| 205 | | | sl_iprule=`echo $sl_rule | $sl_awkcmd -F '*' '{print $3}'` |
| 206 | | | sl_ipconf=`echo $sl_ips | $sl_trcmd " " "\n" | $sl_grepcmd "^"$sl_iprule"\*"` |
| 207 | 7 | simandl | |
| 208 | 17 | simandl | if [ "$sl_ipconf x" == " x" ] |
| 209 | | | then |
| 210 | | | #we have a rule without an IP in config so we delete this rule |
| 211 | | | sl_ipgws=`echo $sl_rule | $sl_awkcmd -F '*' '{print $2,$3,$4,$5,$6,$7}'` |
| 212 | | | if [ $scm_info -gt 0 ]; then echo "Deleting non config rule $sl_ipgws" ; fi |
| 213 | | | $sl_ipcmd ru del $sl_ipgws |
| 214 | | | #this should make faster applying of new routing tables |
| 215 | | | $sl_ipcmd ro flush cache |
| 216 | | | fi |
| 217 | | | done |
| 218 | | | |
| 219 | 7 | simandl | } # s_fillrules |
| 220 | 8 | simandl | |
| 221 | 7 | simandl | ###################################################################### |
| 222 | 10 | simandl | # here we look into the main routing table for path to our iGWs |
| 223 | | | # and we fill these tables with two halves default nets that |
| 224 | | | # point to appropriate direction |
| 225 | | | # this routine can be skipped when the routing table is the same |
| 226 | 7 | simandl | s_filltables() |
| 227 | | | { |
| 228 | 10 | simandl | if [ $scm_info -gt 0 ]; then echo "Checking main routing table" ; fi |
| 229 | | | |
| 230 | 7 | simandl | if [ $scm_info -gt 0 ]; then echo "Filling tables" ; fi |
| 231 | | | |
| 232 | 9 | simandl | sl_igws=`$sl_catcmd $sl_sedlocache/$sl_nmcnf | $sl_grepcmd -E "^igw|^myigw" | $sl_awkcmd '{print $3"*"$2"*"$1}'` |
| 233 | 7 | simandl | |
| 234 | | | for sl_igw in $sl_igws |
| 235 | | | do |
| 236 | | | sl_igwn=`echo $sl_igw | $sl_awkcmd -F '*' '{print $1}'` |
| 237 | | | sl_igwip=`echo $sl_igw | $sl_awkcmd -F '*' '{print $2}'` |
| 238 | 9 | simandl | sl_igwtype=`echo $sl_igw | $sl_awkcmd -F '*' '{print $3}'` |
| 239 | 15 | simandl | |
| 240 | 14 | simandl | #oprava falesneho routovani na lokalni iface - pokud jsme lokalni igw tak se nema najit ip |
| 241 | | | #protoze cesta dal neni - jsme totiz uz na lokalnim iface |
| 242 | 15 | simandl | #head je tam proto ze se pro prespolni(a bgp) muze objevit vice rout s ruznou metrikou tak vezmem jen prvni (head) |
| 243 | | | #s nejmensi metrikou (sort) |
| 244 | | | sl_igwgt=`$sl_ipcmd ro ls | $sl_grepcmd -v "proto kernel" | $sl_grepcmd "^$sl_igwip " | sort | $sl_awkcmd '{print $3}' | head -n 1` |
| 245 | 7 | simandl | |
| 246 | 9 | simandl | # equal cost multipath detection - just first IP is taken as way to igw |
| 247 | 7 | simandl | if [ "$sl_igwgt x" = "zebra x" ] |
| 248 | | | then |
| 249 | | | sl_igwgt=`$sl_ipcmd ro ls | $sl_grepcmd -A 1 "^$sl_igwip " | $sl_grepcmd "nexthop" | $sl_awkcmd '{print $3}'` |
| 250 | | | fi |
| 251 | | | |
| 252 | 9 | simandl | #if myigw then fill table for local gateway with single ip from config |
| 253 | | | if [ "$sl_igwtype x" = "myigw x" ] |
| 254 | | | then |
| 255 | | | sl_igwgt=$sl_igwip |
| 256 | | | fi |
| 257 | 11 | simandl | #testing if the igw has not a route in global routing table |
| 258 | 7 | simandl | if [ "$sl_igwgt x" = " x" ] |
| 259 | | | then |
| 260 | 11 | simandl | if [ $scm_info -gt 1 ]; then echo "Route not found for igw $sl_igwn" ; fi |
| 261 | | | sl_myigw=`cat $sl_sedlocnf | $sl_grepcmd "^myigw" | $sl_grepcmd $sl_igwn | $sl_awkcmd '{print $3}'` |
| 262 | | | #testing if the igw without route is in local config |
| 263 | | | #if not we go to flush its table and set flag to redo rules |
| 264 | | | if [ "$sl_myigw x" = " x" ] |
| 265 | | | then |
| 266 | | | #getting num of routes of igw |
| 267 | 13 | simandl | sl_igwnr=`$sl_ipcmd ro ls ta all | $sl_grepcmd -c "table ${sl_igwn} "` |
| 268 | 11 | simandl | if [ "$sl_igwnr x" = "0 x" ] |
| 269 | | | then |
| 270 | 12 | simandl | if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn is already empty - no action taken" ; fi |
| 271 | 11 | simandl | else |
| 272 | 12 | simandl | if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will be flushed and rules rearranged" ; fi |
| 273 | 11 | simandl | $sl_ipcmd ro fl ta $sl_igwn |
| 274 | | | #because this igw dissapeared we set a flag for rules recreation |
| 275 | | | sl_diffigw=1 |
| 276 | | | fi |
| 277 | | | else |
| 278 | 13 | simandl | if [ $scm_info -gt 1 ]; then echo "Igw $sl_igwn found in local config - leaving table as is" ; fi |
| 279 | 11 | simandl | fi |
| 280 | 7 | simandl | else |
| 281 | | | sl_tbl=`$sl_ipcmd ro ls ta $sl_igwn` |
| 282 | 12 | simandl | #if the table is empty we fill it and we set flag for rules recreation |
| 283 | | | if [ "$sl_tbl x" = " x" ] |
| 284 | 7 | simandl | then |
| 285 | 12 | simandl | sl_diffigw=1 |
| 286 | | | $sl_ipcmd ro add 0.0.0.0/1 via $sl_igwgt ta $sl_igwn |
| 287 | | | $sl_ipcmd ro add 128.0.0.0/1 via $sl_igwgt ta $sl_igwn |
| 288 | | | if [ "$sl_igwtype x" = "myigw x" ] |
| 289 | | | then |
| 290 | | | if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn filled with default myigw $sl_igwgt" ; fi |
| 291 | | | else |
| 292 | | | if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn filled with default gw $sl_igwgt" ; fi |
| 293 | | | fi |
| 294 | | | #the table is not empty so we check if routes are the same |
| 295 | 9 | simandl | else |
| 296 | 12 | simandl | #picking default gateway from the table |
| 297 | | | sl_igwogt=`$sl_ipcmd ro ls ta $sl_igwn | $sl_awkcmd '{print $3}' | uniq` |
| 298 | | | #checking if the old default is same as the new one |
| 299 | | | if [ "$sl_igwogt x" = "$sl_igwgt x" ] |
| 300 | | | then |
| 301 | | | if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will not be changed and default is $sl_igwgt" ; fi |
| 302 | | | else |
| 303 | | | #the new default is different so we will flush the table, fill new default |
| 304 | 15 | simandl | if [ $scm_info -gt 1 ]; then echo "Table $sl_igwn will be rewritten to default $sl_igwgt" ; fi |
| 305 | 12 | simandl | #flushing old default route in the table |
| 306 | | | $sl_ipcmd ro fl ta $sl_igwn |
| 307 | | | #filling new default |
| 308 | | | $sl_ipcmd ro add 0.0.0.0/1 via $sl_igwgt ta $sl_igwn |
| 309 | | | $sl_ipcmd ro add 128.0.0.0/1 via $sl_igwgt ta $sl_igwn |
| 310 | | | fi |
| 311 | 9 | simandl | fi |
| 312 | 7 | simandl | fi |
| 313 | | | done |
| 314 | | | |
| 315 | | | } # s_filltables |
| 316 | 8 | simandl | |
| 317 | 7 | simandl | ###################################################################### |
| 318 | 10 | simandl | # filling rttab with tables from config |
| 319 | | | # only new tables are created with a new uniq number that is not important because |
| 320 | | | # usually we handle tables just by their names |
| 321 | | | # this routine acts only when a new iGW appears - only adding a table is supported |
| 322 | | | # no deleting is implemented because it seems to be not necessary to delete an old table |
| 323 | | | # because there is space enough and after reboot table will not be created |
| 324 | 7 | simandl | s_mktables() |
| 325 | | | { |
| 326 | 10 | simandl | if [ $scm_info -gt 0 ]; then echo "Checking tables" ; fi |
| 327 | | | |
| 328 | 9 | simandl | sl_igws=`$sl_catcmd $sl_sedlocache/$sl_nmcnf | $sl_grepcmd -E "^igw|^myigw" | $sl_awkcmd '{print $3}'` |
| 329 | 7 | simandl | for sl_igw in $sl_igws |
| 330 | | | do |
| 331 | | | sl_igwrttb=`$sl_catcmd $sl_rttab | $sl_awkcmd '{print $2}' | $sl_grepcmd $sl_igw ` |
| 332 | | | if [ "$sl_igwrttb x" = " x" ] |
| 333 | | | then |
| 334 | | | if [ $scm_info -gt 1 ]; then echo "Creating table for $sl_igw" ; fi |
| 335 | | | sl_cnt="$sl_rtnmax" |
| 336 | | | sl_ok="no" |
| 337 | | | until [ "$sl_cnt" -eq "$sl_rtnmin" ] || [ "$sl_ok" = "yes" ] |
| 338 | | | do |
| 339 | | | #space is used to recognized two and three digit numbers |
| 340 | | | sl_igwrttb=`cat $sl_rttab | awk '{print $1" "}' | grep "$sl_cnt " ` |
| 341 | | | if [ "$sl_igwrttb x" = " x" ] |
| 342 | | | then |
| 343 | | | sl_ok="yes" |
| 344 | | | echo "$sl_cnt $sl_igw" >> $sl_rttab |
| 345 | | | fi |
| 346 | | | sl_cnt=$(($sl_cnt - 1 )) |
| 347 | 11 | simandl | done |
| 348 | | | # a new table was created so we should set a flag for rules creation |
| 349 | | | sl_difftbl=1 |
| 350 | 7 | simandl | else |
| 351 | | | if [ $scm_info -gt 1 ]; then echo "Table found for $sl_igw no action taken" ; fi |
| 352 | | | fi |
| 353 | 9 | simandl | done |
| 354 | 7 | simandl | } # s_mktables |
| 355 | 8 | simandl | |
| 356 | 7 | simandl | ###################################################################### |
| 357 | | | s_getcfg() |
| 358 | | | { |
| 359 | | | if [ $scm_info -gt 0 ]; then echo "Getting config" ; fi |
| 360 | | | if [ $scm_info -gt 1 ]; then echo "Using main config $sl_murlcfg" ; fi |
| 361 | | | if [ $scm_info -gt 1 ]; then echo "Using local config $sl_sedlocnf" ; fi |
| 362 | | | |
| 363 | 10 | simandl | rm -f "$sl_sedlocache/$sl_nmcnf.main.tmp" |
| 364 | 7 | simandl | |
| 365 | 10 | simandl | $sl_wgetcmd -q -t 3 $sl_murlcfg -O "$sl_sedlocache/$sl_nmcnf.main.tmp" |
| 366 | | | |
| 367 | 7 | simandl | if [ -s $sl_sedlocache/$sl_nmcnf.main.tmp ] |
| 368 | | | then |
| 369 | | | date > $sl_sedlocache/last_getcnf.txt |
| 370 | | | cp $sl_sedlocache/$sl_nmcnf.main.tmp $sl_sedlocache/$sl_nmcnf.main |
| 371 | 10 | simandl | if [ $scm_info -gt 1 ]; then echo "Main config downloaded and accepted" ; fi |
| 372 | 7 | simandl | else |
| 373 | 8 | simandl | if [ $scm_info -gt 1 ]; then echo "Main config not downloaded - cached config will be used" ; fi |
| 374 | | | echo -n "Main config not downloaded " > $sl_sedlocache/last_getcnf.txt |
| 375 | 7 | simandl | date >> $sl_sedlocache/last_getcnf.txt |
| 376 | | | fi |
| 377 | | | |
| 378 | 10 | simandl | # before generating a new cached config we store the old one for |
| 379 | | | # comparison with the new one |
| 380 | | | rm -f "$sl_sedlocache/$sl_nmcnf.old" |
| 381 | | | if [ -s $sl_sedlocache/$sl_nmcnf ] |
| 382 | | | then |
| 383 | | | cp $sl_sedlocache/$sl_nmcnf $sl_sedlocache/$sl_nmcnf.old |
| 384 | | | else |
| 385 | | | touch $sl_sedlocache/$sl_nmcnf.old |
| 386 | | | fi |
| 387 | | | |
| 388 | 7 | simandl | # preparing cached config from local and main |
| 389 | | | # the local config should be processed as the second to have |
| 390 | | | # higher priority for rules from local config |
| 391 | | | echo "# generated file" > $sl_sedlocache/$sl_nmcnf |
| 392 | | | for sl_file in `ls $sl_sedlocache/$sl_nmcnf.main ; ls $sl_sedlocnf` |
| 393 | | | do |
| 394 | | | cat $sl_file | grep "^mcnf" | $sl_trcmd ';' '#' | awk '{print $1"\t"$2}' >> $sl_sedlocache/$sl_nmcnf |
| 395 | | | cat $sl_file | grep "^igw" | $sl_trcmd ';' '#' | awk '{print $1"\t"$2"\t"$3}' >> $sl_sedlocache/$sl_nmcnf |
| 396 | | | cat $sl_file | grep "^ip" | $sl_trcmd ';' '#' | awk '{print $1"\t"$2"\t"$3"\t"$4"\t"$5"\t"$6}' >> $sl_sedlocache/$sl_nmcnf |
| 397 | | | done |
| 398 | 8 | simandl | |
| 399 | | | #local gateways taken from local config |
| 400 | | | cat $sl_sedlocnf | grep "^myigw" | $sl_trcmd ';' '#' | awk '{print $1"\t"$2"\t"$3}' >> $sl_sedlocache/$sl_nmcnf |
| 401 | | | |
| 402 | 7 | simandl | #cat $sl_sedlocache/$sl_nmcnf | sort | uniq > $sl_sedlocache/$sl_nmcnf.uniq |
| 403 | | | #mv $sl_sedlocache/$sl_nmcnf.uniq $sl_sedlocache/$sl_nmcnf |
| 404 | | | |
| 405 | 10 | simandl | sl_diffcfg=`diff $sl_sedlocache/$sl_nmcnf $sl_sedlocache/$sl_nmcnf.old | grep -c .` |
| 406 | | | if [ $sl_diffcfg -gt 0 ] |
| 407 | | | then |
| 408 | | | if [ $scm_info -gt 0 ]; then echo "New config is different than the old one" ; fi |
| 409 | | | else |
| 410 | | | if [ $scm_info -gt 0 ]; then echo "New config is the same as the old one" ; fi |
| 411 | | | fi |
| 412 | | | |
| 413 | 11 | simandl | # showing number of rules in config and system |
| 414 | 10 | simandl | sl_numru=`ip ru ls | grep -c lookup` |
| 415 | | | sl_numip=`grep -c ^ip $sl_sedlocache/$sl_nmcnf` |
| 416 | | | sl_numru=$(($sl_numru - 3 )) |
| 417 | | | if [ $sl_numip -gt $sl_numru ] |
| 418 | | | then |
| 419 | | | if [ $scm_info -gt 0 ]; then echo "We have less rules ($sl_numru) than new config has ips ($sl_numip)" ; fi |
| 420 | 11 | simandl | # sl_diffcfg="1" |
| 421 | 10 | simandl | else |
| 422 | | | if [ $scm_info -gt 0 ]; then echo "We have $sl_numru rules and $sl_numip ips" ; fi |
| 423 | | | fi |
| 424 | | | |
| 425 | 7 | simandl | } |
| 426 | 8 | simandl | |
| 427 | 7 | simandl | ###################################################################### |
| 428 | | | s_version() |
| 429 | | | { |
| 430 | | | echo sedlo $sl_version |
| 431 | | | } # s_version |
| 432 | 8 | simandl | |
| 433 | 7 | simandl | ###################################################################### |
| 434 | | | s_report() |
| 435 | | | { |
| 436 | 9 | simandl | echo Content-type: text/html |
| 437 | | | echo |
| 438 | | | echo "Sedlo na routeru `hostname`" |
| 439 | | | echo "<pre>" |
| 440 | 7 | simandl | echo "##### SEDLO #####" |
| 441 | | | echo "date : `date`" |
| 442 | | | echo "version : $sl_version" |
| 443 | | | echo "local_config : $sl_sedlocnf" |
| 444 | 9 | simandl | echo "main_config : <a href=\"$sl_murlcfg\">$sl_murlcfg</a>" |
| 445 | 7 | simandl | echo "last update : `cat $sl_sedlocache/last_getcnf.txt`" |
| 446 | | | echo "##### TABLES #####" |
| 447 | | | cat $sl_rttab |
| 448 | 9 | simandl | echo ; echo "##### DEFAULT ROUTES IN TABLES #####" |
| 449 | | | $sl_ipcmd ro ls ta all | $sl_grepcmd table | $sl_grepcmd -v local | $sl_trcmd " " "\t" |
| 450 | | | echo ; echo "##### RULES FOR IPS #####" |
| 451 | | | $sl_ipcmd ru ls | $sl_trcmd " " "\t" |
| 452 | | | echo "</pre>" |
| 453 | 7 | simandl | } # s_report |
| 454 | 8 | simandl | |
| 455 | 9 | simandl | |
| 456 | | | |
| 457 | 7 | simandl | ###################################################################### |
| 458 | | | s_help() |
| 459 | | | { |
| 460 | | | echo Pouziti: sedlo [param] |
| 461 | | | echo param: |
| 462 | | | echo -V vypise verzi |
| 463 | | | echo -help vypise napovedu |
| 464 | | | echo -v malo upovidany |
| 465 | | | echo -vv hodne upovidany |
| 466 | | | echo -nogetcfg zajisti ze se nedude znovu nacitat konfigurace a pouzije se predchozi z cache |
| 467 | | | echo -report vypise prehled pravidel a tabulek |
| 468 | | | echo -flru odstrani vsechny pravidla |
| 469 | 11 | simandl | echo -force bezpodminecne znovu obnovi vsechny pravidla |
| 470 | 7 | simandl | } # s_help |
| 471 | 8 | simandl | |
| 472 | 7 | simandl | ###################################################################### |
| 473 | | | ###################################################################### |
| 474 | | | |
| 475 | | | sl_unknown="" |
| 476 | | | scm_nogetcfg=0 |
| 477 | | | scm_flru=0 |
| 478 | | | scm_info=0 |
| 479 | 11 | simandl | scm_force=0 |
| 480 | | | sl_diffigw=0 |
| 481 | | | sl_difftbl=0 |
| 482 | 7 | simandl | |
| 483 | | | # parsing input parameters |
| 484 | | | while [ "a$1" != "a" ] |
| 485 | | | do |
| 486 | | | case $1 in |
| 487 | | | -V) |
| 488 | | | s_version |
| 489 | | | exit 0 |
| 490 | | | ;; |
| 491 | | | -h) |
| 492 | | | s_help |
| 493 | | | exit 0 |
| 494 | | | ;; |
| 495 | | | -report) |
| 496 | | | s_report |
| 497 | | | exit 0 |
| 498 | | | ;; |
| 499 | | | -flru) |
| 500 | | | scm_flru=1 |
| 501 | | | shift |
| 502 | | | ;; |
| 503 | 11 | simandl | -force) |
| 504 | | | scm_force=1 |
| 505 | | | shift |
| 506 | | | ;; |
| 507 | 7 | simandl | -help) |
| 508 | | | s_help |
| 509 | | | exit 0 |
| 510 | | | ;; |
| 511 | | | -nogetcfg) |
| 512 | | | scm_nogetcfg=1 |
| 513 | | | shift |
| 514 | | | ;; |
| 515 | | | -v) |
| 516 | | | scm_info=1 |
| 517 | | | shift |
| 518 | | | ;; |
| 519 | | | -vv) |
| 520 | | | scm_info=2 |
| 521 | | | shift |
| 522 | | | ;; |
| 523 | | | *) |
| 524 | | | sl_unknown="$sl_unknown$1 " |
| 525 | | | shift |
| 526 | | | esac |
| 527 | | | done |
| 528 | | | |
| 529 | | | # printing the list of bad parameters (if there are some) |
| 530 | | | if [ "a$sl_unknown" != "a" ] |
| 531 | | | then |
| 532 | | | echo "$slm_unknown $sl_unknown" |
| 533 | | | s_help |
| 534 | | | exit 0 |
| 535 | | | fi |
| 536 | | | |
| 537 | | | if [ $scm_flru -eq 1 ] |
| 538 | | | then |
| 539 | 16 | simandl | s_flruall |
| 540 | 7 | simandl | exit 0 |
| 541 | | | fi |
| 542 | | | |
| 543 | | | if [ $scm_nogetcfg -eq 0 ] |
| 544 | | | then |
| 545 | | | s_getcfg |
| 546 | | | fi |
| 547 | | | |
| 548 | | | s_mktables |
| 549 | | | s_filltables |
| 550 | 15 | simandl | #toto je pro ladici ucely |
| 551 | 11 | simandl | #echo $sl_difftbl |
| 552 | | | #echo $sl_diffcfg |
| 553 | | | #echo $sl_diffigw |
| 554 | | | #echo $scm_force |
| 555 | 13 | simandl | #exit 0 |
| 556 | 15 | simandl | |
| 557 | 11 | simandl | #flushing and filling rules is done only when |
| 558 | | | #new table is created |
| 559 | | | #config is changed |
| 560 | | | #some igw dissapears or appears |
| 561 | | | #-force command line parameter was used |
| 562 | | | if [ $sl_difftbl -gt 0 ] || [ $sl_diffcfg -gt 0 ] || [ $sl_diffigw -gt 0 ] || [ $scm_force -gt 0 ] |
| 563 | 10 | simandl | then |
| 564 | | | s_fillrules |
| 565 | | | fi |
| 566 | | | |
| 567 | 16 | simandl | |
| 568 | 7 | simandl | exit 0 |
