scripts / Cisco

Commit da65f63d5799af4c2051b1e0c9694112374175f0

Authored by Frederik Lindenaar
1 parent 418e65bb

- added fail() function to exit with an error code in case a problem occurs 

- scp and ssh actions that fail (i.e. host not available) will now generate an error message (fixes #6)
- default pattern for universal IOS images now also supports provisional images (fixes #8)
Inline Side-by-side
Showing 1 changed file with 36 additions and 21 deletions
sync-router
  View file @da65f63
... ... @@ -10,7 +10,7 @@
10 10 # repository, update startup-config file accordingly on router
11 11 # - commit changes to the git repository
12 12 #
13   -# Version 1.1, latest version at: https://gitlab.lindenaar.net/scripts/cisco
  13 +# Version 1.2, latest version at: https://gitlab.lindenaar.net/scripts/cisco
14 14 #
15 15 # Copyright (c) 2016 Frederik Lindenaar
16 16 #
... ... @@ -26,14 +26,21 @@
26 26 # this program. If not, visit <http://www.gnu.org/licenses/> to download it.
27 27  
28 28 ### Configuration ###
29   -router=`basename \`dirname $0 | pwd\`` # name of router - based on directory
30   -dhcpfiles=dhcp-\* # list/pattern of dhcp lease files
31   -imagefiles=c??00-universalk9-mz.SPA.\* # list/pattern of IOS image files
32   -filestore=flash # location of dhcp/IOS files on cisco
  29 +router=`basename \`dirname $0 | pwd\`` # name of router - based on directory
  30 +dhcpfiles=dhcp-\* # list/pattern of dhcp lease files
  31 +imagefiles=c??00-universalk9-mz.S[SP]A.\* # list/pattern of IOS image files
  32 +filestore=flash # location of dhcp/IOS files on cisco
33 33  
34 34 ### Implementation ###
35 35 echo updating with $router
36 36  
  37 +# Support function to print an error message and quit with an error exit code(1)
  38 +# parameters: $1 - message to be printed
  39 +fail() {
  40 + echo FATAL: ${1?ERROR: no error message provided for fail()}, aborted
  41 + exit 1
  42 +}
  43 +
37 44 # Support function to download a file from the router
38 45 # parameters: $1 - filename to be copied and $2 - (optional) target filename
39 46 # when no target filename is provided the source file will be downloaded to the
... ... @@ -47,8 +54,11 @@ router_file_download() {
47 54 filesrc=$filestore
48 55 fi
49 56 echo downloading $tofile from router $filesrc
50   - scp -q $router:$filesrc:$fromfile $tofile
51   - git add $tofile
  57 + if scp -q $router:$filesrc:$fromfile $tofile; then
  58 + git add $tofile
  59 + else
  60 + fail "download of $tofile failed"
  61 + fi
52 62 }
53 63  
54 64 # Support function to upload a file to the router
... ... @@ -64,10 +74,13 @@ router_file_upload() {
64 74 filedst=$filestore
65 75 fi
66 76 echo uploading new/updated $tofile to router $filedst
67   - scp -q $fromfile $router:$filedst:$tofile
68   - if [ "$fromfile" != "$tofile" ]; then
69   - mv $fromfile $tofile
70   - git add $tofile
  77 + if scp -q $fromfile $router:$filedst:$tofile; then
  78 + if [ "$fromfile" != "$tofile" ]; then
  79 + mv $fromfile $tofile
  80 + git add $tofile
  81 + fi
  82 + else
  83 + fail "upload of $tofile failed"
71 84 fi
72 85 }
73 86  
... ... @@ -76,7 +89,9 @@ router_file_upload() {
76 89 router_file_remove() {
77 90 delfile=${1?ERROR: need a filename to remove from router}
78 91 echo removing $delfile as it is no longer in the repository
79   - ssh -q $router "delete /force $filestore:$delfile"
  92 + if ! ssh -q $router "delete /force $filestore:$delfile"; then
  93 + fail "removal of $delfile failed"
  94 + fi
80 95 }
81 96  
82 97  
... ... @@ -109,8 +124,7 @@ do
109 124 echo $tag $[ $value + 1 ] >> .$filename.$$.tmp
110 125 ;;
111 126 *)
112   - echo "found unknown entry \"$tag $value\", aborting"
113   - exit 1
  127 + fail "found unknown entry \"$tag $value\" in $filename"
114 128 ;;
115 129 esac
116 130 done
... ... @@ -118,22 +132,23 @@ do
118 132 router_file_upload .$filename.$$.tmp $filename
119 133 ;;
120 134 *)
121   - echo unsupported git status "$status", aborting
122   - exit 1
  135 + fail "unsupported git status \"$status\" for $filename"
123 136 ;;
124 137 esac
125 138 done
126 139  
127 140 # Restart the DHCP service on the router if any of the dhcp files changed
128 141 if git status -s "$dhcpfiles" | egrep -q ^[MAD]; then
129   - echo restarting dhcp service
130   - cat << EOT | ssh -q $router
  142 + echo restarting DHCP service
  143 + cat << EOT | if ! ssh -q $router; then
131 144 configure terminal
132 145 no service dhcp
133 146 service dhcp
134 147 exit
135 148 exit
136 149 EOT
  150 + fail "unable to restart DHCP service"
  151 + fi
137 152 fi
138 153  
139 154  
... ... @@ -155,8 +170,7 @@ do
155 170 router_file_upload $filename
156 171 ;;
157 172 *)
158   - echo unsupported git status "$status", aborting
159   - exit 1
  173 + fail "unsupported git status \"$status\" for $filename"
160 174 ;;
161 175 esac
162 176 done
... ... @@ -173,5 +187,6 @@ fi
173 187  
174 188  
175 189 # show what has changed in the startup config and commit to the repository
176   -git diff --cached startup-config
  190 +git diff --cached startup-config
177 191 git commit || git reset HEAD startup-config
  192 +
... ...