--- a/doc/openfortivpn.1.in
+++ b/doc/openfortivpn.1.in
@@ -12,6 +12,7 @@ openfortivpn \- Client for PPP+SSL VPN t
[\fB\-\-otp\-prompt=\fI<prompt>\fR]
[\fB\-\-otp\-delay=\fI<delay>\fR]
[\fB\-\-realm=\fI<realm>\fR]
+[\fB\-\-ifname=\fI<interface>\fR]
[\fB\-\-set\-routes=<bool>\fR]
[\fB\-\-no\-routes\fR]
[\fB\-\-set\-dns=<bool>\fR]
@@ -83,6 +84,9 @@ no wait (this is the default).
Connect to the specified authentication realm. Defaults to empty, which
is usually what you want.
.TP
+\fB\-\-ifname=\fI<interface>\fR
+Bind the connection to the specified network interface.
+.TP
\fB\-\-set\-routes=\fI<bool>\fR, \fB\-\-no-routes\fR
Set if openfortivpn should try to configure IP routes through the VPN when
tunnel is up. If used multiple times, the last one takes priority.
--- a/src/config.c
+++ b/src/config.c
@@ -50,6 +50,7 @@ const struct vpn_config invalid_cfg = {
.otp_delay = -1,
.pinentry = NULL,
.realm = {'\0'},
+ .iface_name = {'\0'},
.set_routes = -1,
.set_dns = -1,
.pppd_use_peerdns = -1,
@@ -490,6 +491,8 @@ void merge_config(struct vpn_config *dst
}
if (src->realm[0])
strcpy(dst->realm, src->realm);
+ if (src->iface_name[0])
+ strcpy(dst->iface_name, src->iface_name);
if (src->set_routes != invalid_cfg.set_routes)
dst->set_routes = src->set_routes;
if (src->set_dns != invalid_cfg.set_dns)
--- a/src/config.h
+++ b/src/config.h
@@ -86,6 +86,7 @@ struct vpn_config {
char *otp_prompt;
unsigned int otp_delay;
char *pinentry;
+ char iface_name[FIELD_SIZE + 1];
char realm[FIELD_SIZE + 1];
int set_routes;
--- a/src/main.c
+++ b/src/main.c
@@ -51,16 +51,16 @@
" resolver and routes directly.\n" \
" --pppd-ifname=<string> Set the pppd interface name, if supported by pppd.\n" \
" --pppd-ipparam=<string> Provides an extra parameter to the ip-up, ip-pre-up\n" \
-" and ip-down scripts. See man (8) pppd\n" \
+" and ip-down scripts. See man (8) pppd.\n" \
" --pppd-call=<name> Move most pppd options from pppd cmdline to\n" \
" /etc/ppp/peers/<name> and invoke pppd with\n" \
-" 'call <name>'\n"
+" 'call <name>'.\n"
#elif HAVE_USR_SBIN_PPP
#define PPPD_USAGE \
" [--ppp-system=<system>]\n"
#define PPPD_HELP \
" --ppp-system=<system> Connect to the specified system as defined in\n" \
-" /etc/ppp/ppp.conf\n"
+" /etc/ppp/ppp.conf.\n"
#else
#error "Neither HAVE_USR_SBIN_PPPD nor HAVE_USR_SBIN_PPP have been defined."
#endif
@@ -69,7 +69,7 @@
#define RESOLVCONF_USAGE \
"[--use-resolvconf=<0|1>] "
#define RESOLVCONF_HELP \
-" --use-resolvconf=[01] If possible use resolvconf to update /etc/resolv.conf\n"
+" --use-resolvconf=[01] If possible use resolvconf to update /etc/resolv.conf.\n"
#else
#define RESOLVCONF_USAGE ""
#define RESOLVCONF_HELP ""
@@ -77,14 +77,14 @@
#define usage \
"Usage: openfortivpn [<host>[:<port>]] [-u <user>] [-p <pass>]\n" \
-" [--pinentry=<program>]\n" \
-" [--realm=<realm>] [--otp=<otp>] [--otp-delay=<delay>]\n" \
-" [--otp-prompt=<prompt>] [--set-routes=<0|1>]\n" \
+" [--otp=<otp>] [--otp-delay=<delay>] [--otp-prompt=<prompt>]\n" \
+" [--pinentry=<program>] [--realm=<realm>]\n" \
+" [--ifname=<ifname>] [--set-routes=<0|1>]\n" \
" [--half-internet-routes=<0|1>] [--set-dns=<0|1>]\n" \
PPPD_USAGE \
" " RESOLVCONF_USAGE "[--ca-file=<file>]\n" \
" [--user-cert=<file>] [--user-key=<file>]\n" \
-" [--trusted-cert=<digest>] [--use-syslog]\n" \
+" [--use-syslog] [--trusted-cert=<digest>]\n" \
" [--persistent=<interval>] [-c <file>] [-v|-q]\n" \
" openfortivpn --help\n" \
" openfortivpn --version\n" \
@@ -115,10 +115,11 @@ PPPD_USAGE \
" -u <user>, --username=<user> VPN account username.\n" \
" -p <pass>, --password=<pass> VPN account password.\n" \
" -o <otp>, --otp=<otp> One-Time-Password.\n" \
-" --otp-prompt=<prompt> Search for the OTP prompt starting with this string\n" \
+" --otp-prompt=<prompt> Search for the OTP prompt starting with this string.\n" \
" --otp-delay=<delay> Wait <delay> seconds before sending the OTP.\n" \
-" --pinentry=<program> Use the program to supply a secret instead of asking for it\n" \
+" --pinentry=<program> Use the program to supply a secret instead of asking for it.\n" \
" --realm=<realm> Use specified authentication realm.\n" \
+" --ifname=<interface> Bind to interface.\n" \
" --set-routes=[01] Set if openfortivpn should configure routes\n" \
" when tunnel is up.\n" \
" --no-routes Do not configure routes, same as --set-routes=0.\n" \
@@ -127,7 +128,7 @@ PPPD_USAGE \
" --set-dns=[01] Set if openfortivpn should add DNS name servers\n" \
" and domain search list in /etc/resolv.conf.\n" \
" If installed resolvconf is used for the update.\n" \
-" --no-dns Do not reconfigure DNS, same as --set-dns=0\n" \
+" --no-dns Do not reconfigure DNS, same as --set-dns=0.\n" \
" --ca-file=<file> Use specified PEM-encoded certificate bundle\n" \
" instead of system-wide store to verify the gateway\n" \
" certificate.\n" \
@@ -199,6 +200,7 @@ int main(int argc, char **argv)
.otp_delay = 0,
.pinentry = NULL,
.realm = {'\0'},
+ .iface_name = {'\0'},
.set_routes = 1,
.set_dns = 1,
.use_syslog = 0,
@@ -245,6 +247,7 @@ int main(int argc, char **argv)
{"otp", required_argument, NULL, 'o'},
{"otp-prompt", required_argument, NULL, 0},
{"otp-delay", required_argument, NULL, 0},
+ {"ifname", required_argument, NULL, 0},
{"set-routes", required_argument, NULL, 0},
{"no-routes", no_argument, &cli_cfg.set_routes, 0},
{"half-internet-routes", required_argument, NULL, 0},
@@ -427,6 +430,12 @@ int main(int argc, char **argv)
break;
}
if (strcmp(long_options[option_index].name,
+ "ifname") == 0) {
+ strncpy(cli_cfg.iface_name, optarg, FIELD_SIZE);
+ cli_cfg.iface_name[FIELD_SIZE] = '\0';
+ break;
+ }
+ if (strcmp(long_options[option_index].name,
"set-routes") == 0) {
int set_routes = strtob(optarg);
--- a/src/tunnel.c
+++ b/src/tunnel.c
@@ -523,12 +523,28 @@ static int tcp_connect(struct tunnel *tu
int ret, handle;
struct sockaddr_in server;
char *env_proxy;
+ const int iface_len = strnlen(tunnel->config->iface_name, IFNAMSIZ);
handle = socket(AF_INET, SOCK_STREAM, 0);
+
if (handle == -1) {
log_error("socket: %s\n", strerror(errno));
goto err_socket;
}
+ if (iface_len == IFNAMSIZ) {
+ log_error("socket: Too long iface name");
+ goto err_socket;
+ }
+ if (iface_len > 0) {
+ ret = setsockopt(handle, SOL_SOCKET, SO_BINDTODEVICE,
+ tunnel->config->iface_name, iface_len);
+ if (ret) {
+ log_error("socket: setting interface name failed with error: %d",
+ errno);
+ goto err_socket;
+ }
+ }
+
env_proxy = getenv("https_proxy");
if (env_proxy == NULL)
env_proxy = getenv("HTTPS_PROXY");