diff options
Diffstat (limited to 'fad-glifc.c')
| -rw-r--r-- | fad-glifc.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/fad-glifc.c b/fad-glifc.c index 9107b44e..5830628b 100644 --- a/fad-glifc.c +++ b/fad-glifc.c @@ -75,7 +75,8 @@ struct rtentry; /* declarations in <net/if.h> */ * SIOCGLIFCONF rather than SIOCGIFCONF in order to get IPv6 addresses.) */ int -pcap_findalldevs_interfaces(pcap_if_t **alldevsp, char *errbuf) +pcap_findalldevs_interfaces(pcap_if_t **alldevsp, char *errbuf, + int (*check_usable)(const char *)) { pcap_if_t *devlist = NULL; register int fd4, fd6, fd; @@ -165,14 +166,6 @@ pcap_findalldevs_interfaces(pcap_if_t **alldevsp, char *errbuf) for (; ifrp < ifend; ifrp++) { /* - * IPv6 or not? - */ - if (((struct sockaddr *)&ifrp->lifr_addr)->sa_family == AF_INET6) - fd = fd6; - else - fd = fd4; - - /* * Skip entries that begin with "dummy". * XXX - what are these? Is this Linux-specific? * Are there platforms on which we shouldn't do this? @@ -203,6 +196,24 @@ pcap_findalldevs_interfaces(pcap_if_t **alldevsp, char *errbuf) #endif /* + * Can we capture on this device? + */ + if (!(*check_usable)(ifrp->lifr_name)) { + /* + * No. + */ + continue; + } + + /* + * IPv6 or not? + */ + if (((struct sockaddr *)&ifrp->lifr_addr)->sa_family == AF_INET6) + fd = fd6; + else + fd = fd4; + + /* * Get the flags for this interface. */ strncpy(ifrflags.lifr_name, ifrp->lifr_name, |