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Be more robust in parsing /proc/net/route. Check for a missing interface

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name. If the destination is missing, ignore that line and continue with
the next line rather than giving up on the whole file. Patch by Ankur
Nandwani.
This commit is contained in:
david 2009-09-07 22:04:56 +00:00
parent 45533e5972
commit 3833d31ed6
1 changed files with 8 additions and 2 deletions
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10
tcpip.cc
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@ -3265,6 +3265,10 @@ static struct sys_route *getsysroutes_proc(FILE * routefp, int *howmany) {
continue; /* Deleted route -- any other valid reason for a route to start with an asterict? */
Strncpy(iface, p, sizeof(iface));
p = strtok(NULL, " \t\n");
if (!p) {
error("Could not find destination in /proc/net/route line");
continue;
}
endptr = NULL;
routes[numroutes].dest = strtoul(p, &endptr, 16);
if (!endptr || *endptr) {
@ -3274,8 +3278,10 @@ static struct sys_route *getsysroutes_proc(FILE * routefp, int *howmany) {
/* Now for the gateway */
p = strtok(NULL, " \t\n");
if (!p)
break;
if (!p) {
error("Could not find gateway in /proc/net/route line");
continue;
}
endptr = NULL;
routes[numroutes].gw.s_addr = strtoul(p, &endptr, 16);
if (!endptr || *endptr) {