/**********************************************************************
* %FUNCTION: PPPoEDevnameHook
* %ARGUMENTS:
* cmd -- the command (actually, the device name
* argv -- argument vector
* doit -- if non-zero, set device name. Otherwise, just check if possible
* %RETURNS:
* 1 if we will handle this device; 0 otherwise.
* %DESCRIPTION:
* Checks if name is a valid interface name; if so, returns 1. Also
* sets up devnam (string representation of device).
***********************************************************************/
static int
PPPoEDevnameHook(char *cmd, char **argv, int doit)
{
int r = 1;
int fd;
struct ifreq ifr;
/* Only do it if name is "ethXXX" or "brXXX" or what was specified
by rp_pppoe_dev option (ugh). */
/* Can also specify nic-XXXX in which case the nic- is stripped off. */
if (!strncmp(cmd, "nic-", 4)) {
cmd += 4;
} else {
if (strncmp(cmd, "eth", 3) &&
strncmp(cmd, "br", 2)) {
if (OldDevnameHook) return OldDevnameHook(cmd, argv, doit);
return 0;
}
}
/* Open a socket */
if ((fd = socket(PF_PACKET, SOCK_RAW, 0)) < 0) {
r = 0;
}
/* Try getting interface index */
if (r) {
strncpy(ifr.ifr_name, cmd, IFNAMSIZ);
if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
r = 0;
} else {
if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
r = 0;
} else {
if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
error("Interface %s not Ethernet", cmd);
r=0;
}
}
}
}
/* Close socket */
close(fd);
if (r) {
strncpy(devnam, cmd, sizeof(devnam));
if (the_channel != &pppoe_channel) {
the_channel = &pppoe_channel;
modem = 0;
lcp_allowoptions[0].neg_accompression = 0;
lcp_wantoptions[0].neg_accompression = 0;
lcp_allowoptions[0].neg_asyncmap = 0;
lcp_wantoptions[0].neg_asyncmap = 0;
lcp_allowoptions[0].neg_pcompression = 0;
lcp_wantoptions[0].neg_pcompression = 0;
ipcp_allowoptions[0].neg_vj=0;
ipcp_wantoptions[0].neg_vj=0;
ccp_allowoptions[0].deflate = 0 ;
ccp_wantoptions[0].deflate = 0 ;
ccp_allowoptions[0].bsd_compress = 0;
ccp_wantoptions[0].bsd_compress = 0;
PPPOEInitDevice();
}
return 1;
}
if (OldDevnameHook) r = OldDevnameHook(cmd, argv, doit);
return r;
}
/**********************************************************************
* %FUNCTION: PPPoEDevnameHook
* %ARGUMENTS:
* cmd -- the command (actually, the device name
* argv -- argument vector
* doit -- if non-zero, set device name. Otherwise, just check if possible
* %RETURNS:
* 1 if we will handle this device; 0 otherwise.
* %DESCRIPTION:
* Checks if name is a valid interface name; if so, returns 1. Also
* sets up devnam (string representation of device).
***********************************************************************/
static int
PPPoEDevnameHook(char *cmd, char **argv, int doit)
{
int r = 1;
int fd;
struct ifreq ifr;
int seen_idx = doit ? 1 : 0;
/* If "devnam" has already been set, ignore.
This prevents kernel from doing modprobes against random
pppd arguments that happen to begin with "nic-", "eth" or "br"
Ideally, "nix-ethXXX" should be supplied immediately after
"plugin rp-pppoe.so"
Patch based on suggestion from Mike Ireton.
*/
if (seen_devnam[seen_idx]) {
if (OldDevnameHook) return OldDevnameHook(cmd, argv, doit);
return 0;
}
/* Only do it if name is "ethXXX" or "brXXX" or what was specified
by rp_pppoe_dev option (ugh). */
/* Can also specify nic-XXXX in which case the nic- is stripped off. */
if (!strncmp(cmd, "nic-", 4)) {
cmd += 4;
} else {
if (strncmp(cmd, "eth", 3) &&
strncmp(cmd, "br", 2)) {
if (OldDevnameHook) return OldDevnameHook(cmd, argv, doit);
return 0;
}
}
/* Open a socket */
if ((fd = socket(PF_PACKET, SOCK_RAW, 0)) < 0) {
r = 0;
}
/* Try getting interface index */
if (r) {
strncpy(ifr.ifr_name, cmd, IFNAMSIZ);
if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
r = 0;
} else {
if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
r = 0;
} else {
if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
error("Interface %s not Ethernet", cmd);
r=0;
}
}
}
}
/* Close socket */
close(fd);
if (r) {
seen_devnam[seen_idx] = 1;
if (doit) {
strncpy(devnam, cmd, sizeof(devnam));
if (the_channel != &pppoe_channel) {
the_channel = &pppoe_channel;
modem = 0;
lcp_allowoptions[0].neg_accompression = 0;
lcp_wantoptions[0].neg_accompression = 0;
lcp_allowoptions[0].neg_asyncmap = 0;
lcp_wantoptions[0].neg_asyncmap = 0;
lcp_allowoptions[0].neg_pcompression = 0;
lcp_wantoptions[0].neg_pcompression = 0;
ipcp_allowoptions[0].neg_vj=0;
ipcp_wantoptions[0].neg_vj=0;
ccp_allowoptions[0].deflate = 0 ;
ccp_wantoptions[0].deflate = 0 ;
ccp_allowoptions[0].bsd_compress = 0;
ccp_wantoptions[0].bsd_compress = 0;
PPPOEInitDevice();
}
}
return 1;
}
if (OldDevnameHook) r = OldDevnameHook(cmd, argv, doit);
return r;
}
/**********************************************************************
* %FUNCTION: PPPoEDevnameHook
* %ARGUMENTS:
* cmd -- the command (actually, the device name
* argv -- argument vector
* doit -- if non-zero, set device name. Otherwise, just check if possible
* %RETURNS:
* 1 if we will handle this device; 0 otherwise.
* %DESCRIPTION:
* Checks if name is a valid interface name; if so, returns 1. Also
* sets up devnam (string representation of device).
***********************************************************************/
static int
PPPoEDevnameHook(char *cmd, char **argv, int doit)
{
int r = 1;
int fd;
struct ifreq ifr;
/* Only do it if name is "ethXXX" */
/* Thanks to Russ Couturier for this fix */
if (strlen(cmd) < 4 || strncmp(cmd, "eth", 3)) {
if (OldDevnameHook) return OldDevnameHook(cmd, argv, doit);
return 0;
}
/* Open a socket */
if ((fd = socket(PF_PACKET, SOCK_RAW, 0)) < 0) {
r = 0;
}
/* Try getting interface index */
if (r) {
strncpy(ifr.ifr_name, cmd, sizeof(ifr.ifr_name));
if (ioctl(fd, SIOCGIFINDEX, &ifr) < 0) {
r = 0;
} else {
if (ioctl(fd, SIOCGIFHWADDR, &ifr) < 0) {
r = 0;
} else {
if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
error("Interface %s not Ethernet", cmd);
r=0;
}
}
}
}
/* Close socket */
close(fd);
if (r) {
strncpy(devnam, cmd, sizeof(devnam));
if (the_channel != &pppoe_channel) {
the_channel = &pppoe_channel;
modem = 0;
lcp_allowoptions[0].neg_accompression = 0;
lcp_wantoptions[0].neg_accompression = 0;
lcp_allowoptions[0].neg_asyncmap = 0;
lcp_wantoptions[0].neg_asyncmap = 0;
lcp_allowoptions[0].neg_pcompression = 0;
lcp_wantoptions[0].neg_pcompression = 0;
ccp_allowoptions[0].deflate = 0 ;
ccp_wantoptions[0].deflate = 0 ;
ipcp_allowoptions[0].neg_vj=0;
ipcp_wantoptions[0].neg_vj=0;
ccp_allowoptions[0].bsd_compress = 0;
ccp_wantoptions[0].bsd_compress = 0;
PPPOEInitDevice();
}
return 1;
}
if (OldDevnameHook) r = OldDevnameHook(cmd, argv, doit);
return r;
}
