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darkstat: Add support to darkstat to allow multiple local networks to be

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specified for montioring

eg allows ipv4 and ipv6 forwarded traffic to be monitored from
both main network and dmz in single graph

Developer's Certificate of Origin 1.1

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(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified
    it.

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
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    maintained indefinitely and may be redistributed consistent with
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Signed-off-by: Simon Day <email@simonday.info>
This commit is contained in:
Simon Day 2020-12-04 12:27:18 +00:00
parent bdd26d8f26
commit be50722b69
1 changed files with 70 additions and 0 deletions
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70
net/darkstat/patches/101-allow-multiple-local-interfaces.patch Normal file
View File

@ -0,0 +1,70 @@
--- a/acct.c
+++ b/acct.c
@@ -37,8 +37,9 @@
uint64_t acct_total_packets = 0, acct_total_bytes = 0;
+#define LOCAL_NET_MAX 10
static int using_localnet4 = 0, using_localnet6 = 0;
-static struct addr localnet4, localmask4, localnet6, localmask6;
+static struct addr localnet4[LOCAL_NET_MAX], localmask4[LOCAL_NET_MAX], localnet6[LOCAL_NET_MAX], localmask6[LOCAL_NET_MAX];
/* Parse the net/mask specification into two IPs or die trying. */
void
@@ -120,13 +121,19 @@ acct_init_localnet(const char *spec)
/* Register the correct netmask and calculate the correct net. */
addr_mask(&localnet, &localmask);
if (localnet.family == IPv6) {
- using_localnet6 = 1;
- localnet6 = localnet;
- localmask6 = localmask;
+ if(using_localnet6 >= LOCAL_NET_MAX){
+ errx(1, "Exceeded maximum IPv6 local networks");
+ }
+ localnet6[using_localnet6] = localnet;
+ localmask6[using_localnet6] = localmask;
+ using_localnet6++;
} else {
- using_localnet4 = 1;
- localnet4 = localnet;
- localmask4 = localmask;
+ if(using_localnet4 >= LOCAL_NET_MAX){
+ errx(1, "Exceeded maximum IPv4 local networks");
+ }
+ localnet4[using_localnet4] = localnet;
+ localmask4[using_localnet4] = localmask;
+ using_localnet4++;
}
verbosef("local network address: %s", addr_to_str(&localnet));
@@ -138,11 +145,15 @@ static int addr_is_local(const struct addr * const a,
if (is_localip(a, local_ips))
return 1;
if (a->family == IPv4 && using_localnet4) {
- if (addr_inside(a, &localnet4, &localmask4))
- return 1;
+ for (int i=0; i < using_localnet4; i++){
+ if (addr_inside(a, &localnet4[i], &localmask4[i]))
+ return 1;
+ }
} else if (a->family == IPv6 && using_localnet6) {
- if (addr_inside(a, &localnet6, &localmask6))
- return 1;
+ for (int i=0; i < using_localnet6; i++){
+ if (addr_inside(a, &localnet6[i], &localmask6[i]))
+ return 1;
+ }
}
return 0;
}
--- a/darkstat.c
+++ b/darkstat.c
@@ -193,7 +193,7 @@ static struct cmdline_arg cmdline_args[] = {
{"-r", "capfile", cb_capfile, 0},
{"-p", "port", cb_port, 0},
{"-b", "bindaddr", cb_bindaddr, -1},
- {"-l", "network/netmask", cb_local, 0},
+ {"-l", "network/netmask", cb_local, -1},
{"--base", "path", cb_base, 0},
{"--local-only", NULL, cb_local_only, 0},
{"--snaplen", "bytes", cb_snaplen, 0},