#include <sys/stat.h>
#include <stddef.h>
#include <sys/ioctl.h>
+#include <netdb.h>
#include "macro.h"
#include "util.h"
if (a->type != b->type)
return false;
- if (a->size != b->size)
- return false;
-
if (socket_address_family(a) != socket_address_family(b))
return false;
break;
case AF_UNIX:
-
if ((a->sockaddr.un.sun_path[0] == 0) != (b->sockaddr.un.sun_path[0] == 0))
return false;
if (a->sockaddr.un.sun_path[0]) {
- if (!strneq(a->sockaddr.un.sun_path, b->sockaddr.un.sun_path, sizeof(a->sockaddr.un.sun_path)))
+ if (!path_equal_or_files_same(a->sockaddr.un.sun_path, b->sockaddr.un.sun_path))
return false;
} else {
+ if (a->size != b->size)
+ return false;
+
if (memcmp(a->sockaddr.un.sun_path, b->sockaddr.un.sun_path, a->size) != 0)
return false;
}
break;
case AF_NETLINK:
-
if (a->protocol != b->protocol)
return false;
_cleanup_free_ char *l = NULL;
if (access("/sys/module/ipv6", F_OK) != 0)
- return 0;
+ return false;
/* If we can't check "disable" parameter, assume enabled */
if (read_one_line_file("/sys/module/ipv6/parameters/disable", &l) < 0)
- return 1;
+ return true;
/* If module was loaded with disable=1 no IPv6 available */
return l[0] == '0';
}
bool socket_address_matches_fd(const SocketAddress *a, int fd) {
- union sockaddr_union sa;
- socklen_t salen = sizeof(sa), solen;
- int protocol, type;
+ SocketAddress b;
+ socklen_t solen;
assert(a);
assert(fd >= 0);
- if (getsockname(fd, &sa.sa, &salen) < 0)
+ b.size = sizeof(b.sockaddr);
+ if (getsockname(fd, &b.sockaddr.sa, &b.size) < 0)
return false;
- if (sa.sa.sa_family != a->sockaddr.sa.sa_family)
+ if (b.sockaddr.sa.sa_family != a->sockaddr.sa.sa_family)
return false;
- solen = sizeof(type);
- if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &solen) < 0)
+ solen = sizeof(b.type);
+ if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &b.type, &solen) < 0)
return false;
- if (type != a->type)
+ if (b.type != a->type)
return false;
if (a->protocol != 0) {
- solen = sizeof(protocol);
- if (getsockopt(fd, SOL_SOCKET, SO_PROTOCOL, &protocol, &solen) < 0)
+ solen = sizeof(b.protocol);
+ if (getsockopt(fd, SOL_SOCKET, SO_PROTOCOL, &b.protocol, &solen) < 0)
return false;
- if (protocol != a->protocol)
+ if (b.protocol != a->protocol)
return false;
}
- switch (sa.sa.sa_family) {
-
- case AF_INET:
- return sa.in.sin_port == a->sockaddr.in.sin_port &&
- sa.in.sin_addr.s_addr == a->sockaddr.in.sin_addr.s_addr;
-
- case AF_INET6:
- return sa.in6.sin6_port == a->sockaddr.in6.sin6_port &&
- memcmp(&sa.in6.sin6_addr, &a->sockaddr.in6.sin6_addr, sizeof(struct in6_addr)) == 0;
-
- case AF_UNIX:
- return salen == a->size &&
- memcmp(sa.un.sun_path, a->sockaddr.un.sun_path, salen - offsetof(struct sockaddr_un, sun_path)) == 0;
-
- }
-
- return false;
+ return socket_address_equal(a, &b);
}
int sockaddr_pretty(const struct sockaddr *_sa, socklen_t salen, bool translate_ipv6, char **ret) {
int getpeername_pretty(int fd, char **ret) {
union sockaddr_union sa;
- socklen_t salen;
+ socklen_t salen = sizeof(sa);
int r;
assert(fd >= 0);
assert(ret);
- salen = sizeof(sa);
if (getpeername(fd, &sa.sa, &salen) < 0)
return -errno;
int getsockname_pretty(int fd, char **ret) {
union sockaddr_union sa;
- socklen_t salen;
+ socklen_t salen = sizeof(sa);
assert(fd >= 0);
assert(ret);
- salen = sizeof(sa);
if (getsockname(fd, &sa.sa, &salen) < 0)
return -errno;
return sockaddr_pretty(&sa.sa, salen, false, ret);
}
-int socket_address_unlink(SocketAddress *a) {
- assert(a);
-
- if (socket_address_family(a) != AF_UNIX)
- return 0;
-
- if (a->sockaddr.un.sun_path[0] == 0)
- return 0;
-
- if (unlink(a->sockaddr.un.sun_path) < 0)
- return -errno;
-
- return 1;
-}
-
-int in_addr_null(unsigned family, union in_addr_union *u) {
- assert(u);
-
- if (family == AF_INET)
- return u->in.s_addr == 0;
-
- if (family == AF_INET6)
- return
- u->in6.s6_addr32[0] == 0 &&
- u->in6.s6_addr32[1] == 0 &&
- u->in6.s6_addr32[2] == 0 &&
- u->in6.s6_addr32[3] == 0;
-
- return -EAFNOSUPPORT;
-}
-
-
-int in_addr_equal(unsigned family, union in_addr_union *a, union in_addr_union *b) {
- assert(a);
- assert(b);
-
- if (family == AF_INET)
- return a->in.s_addr == b->in.s_addr;
-
- if (family == AF_INET6)
- return
- a->in6.s6_addr32[0] == b->in6.s6_addr32[0] &&
- a->in6.s6_addr32[1] == b->in6.s6_addr32[1] &&
- a->in6.s6_addr32[2] == b->in6.s6_addr32[2] &&
- a->in6.s6_addr32[3] == b->in6.s6_addr32[3];
-
- return -EAFNOSUPPORT;
-}
-
-int in_addr_prefix_intersect(
- unsigned family,
- const union in_addr_union *a,
- unsigned aprefixlen,
- const union in_addr_union *b,
- unsigned bprefixlen) {
-
- unsigned m;
-
- assert(a);
- assert(b);
-
- /* Checks whether there are any addresses that are in both
- * networks */
-
- m = MIN(aprefixlen, bprefixlen);
-
- if (family == AF_INET) {
- uint32_t x, nm;
-
- x = be32toh(a->in.s_addr ^ b->in.s_addr);
- nm = 0xFFFFFFFFUL << (32 - m);
-
- return (x & nm) == 0;
- }
-
- if (family == AF_INET6) {
- unsigned i;
-
- if (m > 128)
- m = 128;
-
- for (i = 0; i < 16; i++) {
- uint8_t x, nm;
-
- x = a->in6.s6_addr[i] ^ b->in6.s6_addr[i];
-
- if (m < 8)
- nm = 0xFF << (8 - m);
- else
- nm = 0xFF;
-
- if ((x & nm) != 0)
- return 0;
-
- if (m > 8)
- m -= 8;
- else
- m = 0;
- }
-
- return 1;
- }
-
- return -EAFNOSUPPORT;
-}
-
-int in_addr_prefix_next(unsigned family, union in_addr_union *u, unsigned prefixlen) {
- assert(u);
-
- /* Increases the network part of an address by one. Returns
- * positive it that succeeds, or 0 if this overflows. */
-
- if (prefixlen <= 0)
- return 0;
-
- if (family == AF_INET) {
- uint32_t c, n;
-
- if (prefixlen > 32)
- prefixlen = 32;
-
- c = be32toh(u->in.s_addr);
- n = c + (1UL << (32 - prefixlen));
- if (n < c)
- return 0;
- n &= 0xFFFFFFFFUL << (32 - prefixlen);
-
- u->in.s_addr = htobe32(n);
- return 1;
- }
-
- if (family == AF_INET6) {
- struct in6_addr add = {}, result;
- uint8_t overflow = 0;
- unsigned i;
-
- if (prefixlen > 128)
- prefixlen = 128;
-
- /* First calculate what we have to add */
- add.s6_addr[(prefixlen-1) / 8] = 1 << (7 - (prefixlen-1) % 8);
+int socknameinfo_pretty(union sockaddr_union *sa, socklen_t salen, char **_ret) {
+ int r;
+ char host[NI_MAXHOST], *ret;
- for (i = 16; i > 0; i--) {
- unsigned j = i - 1;
+ assert(_ret);
- result.s6_addr[j] = u->in6.s6_addr[j] + add.s6_addr[j] + overflow;
- overflow = (result.s6_addr[j] < u->in6.s6_addr[j]);
- }
+ r = getnameinfo(&sa->sa, salen, host, sizeof(host), NULL, 0,
+ NI_IDN|NI_IDN_USE_STD3_ASCII_RULES);
+ if (r != 0) {
+ int saved_errno = errno;
- if (overflow)
- return 0;
+ r = sockaddr_pretty(&sa->sa, salen, true, &ret);
+ if (r < 0)
+ return log_error_errno(r, "sockadd_pretty() failed: %m");
- u->in6 = result;
- return 1;
+ log_debug_errno(saved_errno, "getnameinfo(%s) failed: %m", ret);
+ } else {
+ ret = strdup(host);
+ if (!ret)
+ return log_oom();
}
- return -EAFNOSUPPORT;
+ *_ret = ret;
+ return 0;
}
-int in_addr_to_string(unsigned family, const union in_addr_union *u, char **ret) {
- char *x;
- size_t l;
+int getnameinfo_pretty(int fd, char **ret) {
+ union sockaddr_union sa;
+ socklen_t salen = sizeof(sa);
- assert(u);
+ assert(fd >= 0);
assert(ret);
- if (family == AF_INET)
- l = INET_ADDRSTRLEN;
- else if (family == AF_INET6)
- l = INET6_ADDRSTRLEN;
- else
- return -EAFNOSUPPORT;
-
- x = new(char, l);
- if (!x)
- return -ENOMEM;
-
- errno = 0;
- if (!inet_ntop(family, u, x, l)) {
- free(x);
- return errno ? -errno : -EINVAL;
- }
+ if (getsockname(fd, &sa.sa, &salen) < 0)
+ return log_error_errno(errno, "getsockname(%d) failed: %m", fd);
- *ret = x;
- return 0;
+ return socknameinfo_pretty(&sa, salen, ret);
}
-int in_addr_from_string(unsigned family, const char *s, union in_addr_union *ret) {
+int socket_address_unlink(SocketAddress *a) {
+ assert(a);
- assert(s);
- assert(ret);
+ if (socket_address_family(a) != AF_UNIX)
+ return 0;
- if (!IN_SET(family, AF_INET, AF_INET6))
- return -EAFNOSUPPORT;
+ if (a->sockaddr.un.sun_path[0] == 0)
+ return 0;
- errno = 0;
- if (inet_pton(family, s, ret) <= 0)
- return errno ? -errno : -EINVAL;
+ if (unlink(a->sockaddr.un.sun_path) < 0)
+ return -errno;
- return 0;
+ return 1;
}
static const char* const netlink_family_table[] = {
};
DEFINE_STRING_TABLE_LOOKUP(socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
+
+bool sockaddr_equal(const union sockaddr_union *a, const union sockaddr_union *b) {
+ assert(a);
+ assert(b);
+
+ if (a->sa.sa_family != b->sa.sa_family)
+ return false;
+
+ if (a->sa.sa_family == AF_INET)
+ return a->in.sin_addr.s_addr == b->in.sin_addr.s_addr;
+
+ if (a->sa.sa_family == AF_INET6)
+ return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)) == 0;
+
+ return false;
+}
+
+char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]) {
+ assert(addr);
+ assert(buffer);
+
+ /* Like ether_ntoa() but uses %02x instead of %x to print
+ * ethernet addresses, which makes them look less funny. Also,
+ * doesn't use a static buffer. */
+
+ sprintf(buffer, "%02x:%02x:%02x:%02x:%02x:%02x",
+ addr->ether_addr_octet[0],
+ addr->ether_addr_octet[1],
+ addr->ether_addr_octet[2],
+ addr->ether_addr_octet[3],
+ addr->ether_addr_octet[4],
+ addr->ether_addr_octet[5]);
+
+ return buffer;
+}
~ianmdlvl / elogind.git / blobdiff