diff options
Diffstat (limited to 'conf.c')
| -rw-r--r-- | conf.c | 47 |
1 files changed, 34 insertions, 13 deletions
@@ -179,9 +179,9 @@ static void conf_ports(const struct ctx *c, char optname, const char *optarg, { char addr_buf[sizeof(struct in6_addr)] = { 0 }, *addr = addr_buf; char buf[BUFSIZ], *spec, *ifname = NULL, *p; + bool exclude_only = true, bound_one = false; uint8_t exclude[PORT_BITMAP_SIZE] = { 0 }; sa_family_t af = AF_UNSPEC; - bool exclude_only = true; if (!strcmp(optarg, "none")) { if (fwd->mode) @@ -215,12 +215,19 @@ static void conf_ports(const struct ctx *c, char optname, const char *optarg, memset(fwd->map, 0xff, PORT_EPHEMERAL_MIN / 8); for (i = 0; i < PORT_EPHEMERAL_MIN; i++) { - if (optname == 't') - tcp_sock_init(c, AF_UNSPEC, NULL, NULL, i); - else if (optname == 'u') - udp_sock_init(c, 0, AF_UNSPEC, NULL, NULL, i); + if (optname == 't') { + if (!tcp_sock_init(c, AF_UNSPEC, NULL, NULL, i)) + bound_one = true; + } else if (optname == 'u') { + if (!udp_sock_init(c, 0, AF_UNSPEC, NULL, NULL, + i)) + bound_one = true; + } } + if (!bound_one) + goto bind_fail; + return; } @@ -293,12 +300,18 @@ static void conf_ports(const struct ctx *c, char optname, const char *optarg, bitmap_set(fwd->map, i); - if (optname == 't') - tcp_sock_init(c, af, addr, ifname, i); - else if (optname == 'u') - udp_sock_init(c, 0, af, addr, ifname, i); + if (optname == 't') { + if (!tcp_sock_init(c, af, addr, ifname, i)) + bound_one = true; + } else if (optname == 'u') { + if (!udp_sock_init(c, 0, af, addr, ifname, i)) + bound_one = true; + } } + if (!bound_one) + goto bind_fail; + return; } @@ -339,13 +352,19 @@ static void conf_ports(const struct ctx *c, char optname, const char *optarg, fwd->delta[i] = mapped_range.first - orig_range.first; - if (optname == 't') - tcp_sock_init(c, af, addr, ifname, i); - else if (optname == 'u') - udp_sock_init(c, 0, af, addr, ifname, i); + if (optname == 't') { + if (!tcp_sock_init(c, af, addr, ifname, i)) + bound_one = true; + } else if (optname == 'u') { + if (udp_sock_init(c, 0, af, addr, ifname, i)) + bound_one = true; + } } } while ((p = next_chunk(p, ','))); + if (!bound_one) + goto bind_fail; + return; bad: die("Invalid port specifier %s", optarg); @@ -353,6 +372,8 @@ overlap: die("Overlapping port specifier %s", optarg); mode_conflict: die("Port forwarding mode '%s' conflicts with previous mode", optarg); +bind_fail: + die("Failed to bind any port for '-%c %s', exiting", optname, optarg); } /** |