| #include "../config.h" |
| |
| #ifdef HAVE_SYS_SOCKET_H |
| |
| #include <osmocom/core/logging.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/socket.h> |
| |
| #include <sys/socket.h> |
| #include <sys/types.h> |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdint.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <netdb.h> |
| #include <ifaddrs.h> |
| |
| int osmo_sock_init(uint16_t family, uint16_t type, uint8_t proto, |
| const char *host, uint16_t port, int connect0_bind1) |
| { |
| struct addrinfo hints, *result, *rp; |
| int sfd, rc, on = 1; |
| char portbuf[16]; |
| |
| sprintf(portbuf, "%u", port); |
| memset(&hints, 0, sizeof(struct addrinfo)); |
| hints.ai_family = family; |
| hints.ai_socktype = type; |
| hints.ai_flags = 0; |
| hints.ai_protocol = proto; |
| |
| if (connect0_bind1) |
| hints.ai_flags |= AI_PASSIVE; |
| |
| rc = getaddrinfo(host, portbuf, &hints, &result); |
| if (rc != 0) { |
| perror("getaddrinfo returned NULL"); |
| return -EINVAL; |
| } |
| |
| for (rp = result; rp != NULL; rp = rp->ai_next) { |
| sfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); |
| if (sfd == -1) |
| continue; |
| if (connect0_bind1 == 0) { |
| if (connect(sfd, rp->ai_addr, rp->ai_addrlen) != -1) |
| break; |
| } else { |
| if (bind(sfd, rp->ai_addr, rp->ai_addrlen) != -1) |
| break; |
| } |
| close(sfd); |
| } |
| freeaddrinfo(result); |
| |
| if (rp == NULL) { |
| perror("unable to connect/bind socket"); |
| return -ENODEV; |
| } |
| |
| setsockopt(sfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); |
| |
| /* Make sure to call 'listen' on a bound, connection-oriented sock */ |
| if (connect0_bind1 == 1) { |
| switch (type) { |
| case SOCK_STREAM: |
| case SOCK_SEQPACKET: |
| listen(sfd, 10); |
| break; |
| } |
| } |
| return sfd; |
| } |
| |
| int osmo_sock_init_ofd(struct osmo_fd *ofd, int family, int type, int proto, |
| const char *host, uint16_t port, int connect0_bind1) |
| { |
| int sfd, rc; |
| |
| sfd = osmo_sock_init(family, type, proto, host, port, connect0_bind1); |
| if (sfd < 0) |
| return sfd; |
| |
| ofd->fd = sfd; |
| ofd->when = BSC_FD_READ; |
| |
| rc = osmo_fd_register(ofd); |
| if (rc < 0) { |
| close(sfd); |
| return rc; |
| } |
| |
| return sfd; |
| } |
| |
| int osmo_sock_init_sa(struct sockaddr *ss, uint16_t type, |
| uint8_t proto, int connect0_bind1) |
| { |
| char host[NI_MAXHOST]; |
| uint16_t port; |
| struct sockaddr_in *sin; |
| struct sockaddr_in6 *sin6; |
| int s, sa_len; |
| |
| /* determine port and host from ss */ |
| switch (ss->sa_family) { |
| case AF_INET: |
| sin = (struct sockaddr_in *) ss; |
| sa_len = sizeof(struct sockaddr_in); |
| port = ntohs(sin->sin_port); |
| break; |
| case AF_INET6: |
| sin6 = (struct sockaddr_in6 *) ss; |
| sa_len = sizeof(struct sockaddr_in6); |
| port = ntohs(sin6->sin6_port); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| s = getnameinfo(ss, sa_len, host, NI_MAXHOST, |
| NULL, 0, NI_NUMERICHOST); |
| if (s != 0) { |
| perror("getnameinfo failed"); |
| return s; |
| } |
| |
| return osmo_sock_init(ss->sa_family, type, proto, host, |
| port, connect0_bind1); |
| } |
| |
| static int sockaddr_equal(const struct sockaddr *a, |
| const struct sockaddr *b, unsigned int len) |
| { |
| struct sockaddr_in *sin_a, *sin_b; |
| struct sockaddr_in6 *sin6_a, *sin6_b; |
| |
| if (a->sa_family != b->sa_family) |
| return 0; |
| |
| switch (a->sa_family) { |
| case AF_INET: |
| sin_a = (struct sockaddr_in *)a; |
| sin_b = (struct sockaddr_in *)b; |
| if (!memcmp(&sin_a->sin_addr, &sin_b->sin_addr, |
| sizeof(struct in_addr))) |
| return 1; |
| break; |
| case AF_INET6: |
| sin6_a = (struct sockaddr_in6 *)a; |
| sin6_b = (struct sockaddr_in6 *)b; |
| if (!memcmp(&sin6_a->sin6_addr, &sin6_b->sin6_addr, |
| sizeof(struct in6_addr))) |
| return 1; |
| break; |
| } |
| return 0; |
| } |
| |
| /* determine if the given address is a local address */ |
| int osmo_sockaddr_is_local(struct sockaddr *addr, socklen_t addrlen) |
| { |
| struct ifaddrs *ifaddr, *ifa; |
| |
| if (getifaddrs(&ifaddr) == -1) { |
| perror("getifaddrs"); |
| return -EIO; |
| } |
| |
| for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) { |
| if (!ifa->ifa_addr) |
| continue; |
| if (sockaddr_equal(ifa->ifa_addr, addr, addrlen)) |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| #endif /* HAVE_SYS_SOCKET_H */ |