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- /*-
- * Copyright 2016 Vsevolod Stakhov
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- #include "config.h"
- #include "addr.h"
- #include "util.h"
- #include "logger.h"
- #include "xxhash.h"
- #include "radix.h"
- #include "unix-std.h"
- /* pwd and grp */
- #ifdef HAVE_PWD_H
- #include <pwd.h>
- #endif
-
- #ifdef HAVE_GRP_H
- #include <grp.h>
- #endif
-
- static radix_compressed_t *local_addrs;
-
- enum {
- RSPAMD_IPV6_UNDEFINED = 0,
- RSPAMD_IPV6_SUPPORTED,
- RSPAMD_IPV6_UNSUPPORTED
- } ipv6_status = RSPAMD_IPV6_UNDEFINED;
-
- /**
- * Union that is used for storing sockaddrs
- */
- union sa_union {
- struct sockaddr sa;
- struct sockaddr_in s4;
- struct sockaddr_in6 s6;
- struct sockaddr_un su;
- struct sockaddr_storage ss;
- };
-
- union sa_inet {
- struct sockaddr sa;
- struct sockaddr_in s4;
- struct sockaddr_in6 s6;
- };
-
- struct rspamd_addr_unix {
- struct sockaddr_un addr;
- gint mode;
- uid_t owner;
- gid_t group;
- };
-
- struct rspamd_addr_inet {
- union sa_inet addr;
- };
-
- struct rspamd_inet_addr_s {
- union {
- struct rspamd_addr_inet in;
- struct rspamd_addr_unix *un;
- } u;
- gint af;
- socklen_t slen;
- };
-
- static void
- rspamd_ip_validate_af (rspamd_inet_addr_t *addr)
- {
- if (addr->af != AF_UNIX) {
- if (addr->u.in.addr.sa.sa_family != addr->af) {
- addr->u.in.addr.sa.sa_family = addr->af;
- }
- }
- else {
- addr->u.un->addr.sun_family = AF_UNIX;
- }
-
- if (addr->af == AF_INET) {
- addr->slen = sizeof (struct sockaddr_in);
- }
- else if (addr->af == AF_INET6) {
- addr->slen = sizeof (struct sockaddr_in6);
- }
- else if (addr->af == AF_UNIX) {
- #ifdef SUN_LEN
- addr->slen = SUN_LEN (&addr->u.un->addr);
- #else
- addr->slen = sizeof (addr->u.un->addr);
- #endif
- #if defined(FREEBSD) || defined(__APPLE__)
- addr->u.un->addr.sun_len = addr->slen;
- #endif
- }
- }
-
-
- static rspamd_inet_addr_t *
- rspamd_inet_addr_create (gint af)
- {
- rspamd_inet_addr_t *addr;
-
- addr = g_slice_alloc0 (sizeof (rspamd_inet_addr_t));
-
- if (af == AF_UNIX) {
- addr->u.un = g_slice_alloc (sizeof (*addr->u.un));
- addr->slen = sizeof (addr->u.un->addr);
- /* Zero terminate to avoid issues with SUN_LEN */
- addr->u.un->addr.sun_path[0] = '\0';
- }
-
- addr->af = af;
-
- rspamd_ip_validate_af (addr);
-
- return addr;
- }
-
- void
- rspamd_inet_address_destroy (rspamd_inet_addr_t *addr)
- {
- if (addr) {
- if (addr->af == AF_UNIX) {
- if (addr->u.un) {
- g_slice_free1 (sizeof (*addr->u.un), addr->u.un);
- }
- }
- g_slice_free1 (sizeof (rspamd_inet_addr_t), addr);
- }
- }
-
- static void
- rspamd_ip_check_ipv6 (void)
- {
- if (ipv6_status == RSPAMD_IPV6_UNDEFINED) {
- gint s, r;
- struct sockaddr_in6 sin6;
- const struct in6_addr ip6_local = IN6ADDR_LOOPBACK_INIT;
-
- s = socket (AF_INET6, SOCK_STREAM, 0);
- if (s == -1) {
- ipv6_status = RSPAMD_IPV6_UNSUPPORTED;
- }
- else {
- /*
- * Some systems allow ipv6 sockets creating but not binding,
- * so here we try to bind to some local address and check, whether it
- * is possible
- */
- memset (&sin6, 0, sizeof (sin6));
- sin6.sin6_family = AF_INET6;
- sin6.sin6_port = g_random_int_range (20000, 60000);
- sin6.sin6_addr = ip6_local;
-
- r = bind (s, (struct sockaddr *)&sin6, sizeof (sin6));
- if (r == -1 && errno != EADDRINUSE) {
- ipv6_status = RSPAMD_IPV6_UNSUPPORTED;
- }
- else {
- ipv6_status = RSPAMD_IPV6_SUPPORTED;
- }
- close (s);
- }
- }
- }
-
- gboolean
- rspamd_ip_is_valid (const rspamd_inet_addr_t *addr)
- {
- const struct in_addr ip4_any = { INADDR_ANY }, ip4_none = { INADDR_NONE };
- const struct in6_addr ip6_any = IN6ADDR_ANY_INIT;
- gboolean ret = FALSE;
-
- if (G_LIKELY (addr->af == AF_INET)) {
- if (memcmp (&addr->u.in.addr.s4.sin_addr, &ip4_any,
- sizeof (struct in_addr)) != 0 &&
- memcmp (&addr->u.in.addr.s4.sin_addr, &ip4_none,
- sizeof (struct in_addr)) != 0) {
- ret = TRUE;
- }
- }
- else if (G_UNLIKELY (addr->af == AF_INET6)) {
- if (memcmp (&addr->u.in.addr.s6.sin6_addr, &ip6_any,
- sizeof (struct in6_addr)) != 0) {
- ret = TRUE;
- }
- }
-
- return ret;
- }
-
- gint
- rspamd_accept_from_socket (gint sock, rspamd_inet_addr_t **target)
- {
- gint nfd, serrno;
- union sa_union su;
- socklen_t len = sizeof (su);
- rspamd_inet_addr_t *addr = NULL;
-
- if ((nfd = accept (sock, &su.sa, &len)) == -1) {
- if (target) {
- *target = NULL;
- }
-
- if (errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK) {
- return 0;
- }
- return -1;
- }
-
- addr = rspamd_inet_addr_create (su.sa.sa_family);
- addr->slen = len;
-
- if (addr->af == AF_UNIX) {
- addr->u.un = g_slice_alloc0 (sizeof (*addr->u.un));
- /* Get name from the listening socket */
- len = sizeof (su);
-
- if (getsockname (sock, &su.sa, &len) != -1) {
- memcpy (&addr->u.un->addr, &su.su, MIN (len,
- sizeof (struct sockaddr_un)));
- }
- else {
- /* Just copy socket address */
- memcpy (&addr->u.un->addr, &su.sa, sizeof (struct sockaddr));
- }
- }
- else {
- memcpy (&addr->u.in.addr, &su, MIN (len, sizeof (addr->u.in.addr)));
- }
-
- if (rspamd_socket_nonblocking (nfd) < 0) {
- goto out;
- }
-
- /* Set close on exec */
- if (fcntl (nfd, F_SETFD, FD_CLOEXEC) == -1) {
- msg_warn ("fcntl failed: %d, '%s'", errno, strerror (errno));
- goto out;
- }
-
- if (target) {
- *target = addr;
- }
- else {
- /* Avoid leak */
- rspamd_inet_address_destroy (addr);
- }
-
- return (nfd);
-
- out:
- serrno = errno;
- close (nfd);
- errno = serrno;
- rspamd_inet_address_destroy (addr);
-
- return (-1);
-
- }
-
- static gboolean
- rspamd_parse_unix_path (rspamd_inet_addr_t **target, const char *src)
- {
- gchar **tokens, **cur_tok, *p, *pwbuf;
- glong pwlen;
- struct passwd pw, *ppw;
- struct group gr, *pgr;
- rspamd_inet_addr_t *addr;
-
- tokens = g_strsplit_set (src, " ", -1);
-
- addr = rspamd_inet_addr_create (AF_UNIX);
-
- rspamd_strlcpy (addr->u.un->addr.sun_path, tokens[0],
- sizeof (addr->u.un->addr.sun_path));
- #if defined(FREEBSD) || defined(__APPLE__)
- addr->u.un->addr.sun_len = SUN_LEN (&addr->u.un->addr);
- #endif
-
- addr->u.un->mode = 00644;
- addr->u.un->owner = (uid_t)-1;
- addr->u.un->group = (gid_t)-1;
-
- cur_tok = &tokens[1];
- #ifdef _SC_GETPW_R_SIZE_MAX
- pwlen = sysconf (_SC_GETPW_R_SIZE_MAX);
- if (pwlen <= 0) {
- pwlen = 8192;
- }
- #else
- pwlen = 8192;
- #endif
-
- pwbuf = g_alloca (pwlen);
-
- while (*cur_tok) {
- if (g_ascii_strncasecmp (*cur_tok, "mode=", sizeof ("mode=") - 1) == 0) {
- p = strchr (*cur_tok, '=');
- /* XXX: add error check */
- addr->u.un->mode = strtoul (p + 1, NULL, 0);
-
- if (addr->u.un->mode == 0) {
- msg_err ("bad mode: %s", p + 1);
- errno = EINVAL;
- goto err;
- }
- }
- else if (g_ascii_strncasecmp (*cur_tok, "owner=",
- sizeof ("owner=") - 1) == 0) {
- p = strchr (*cur_tok, '=');
-
- if (getpwnam_r (p + 1, &pw, pwbuf, pwlen, &ppw) != 0 || ppw == NULL) {
- msg_err ("bad user: %s", p + 1);
- if (ppw == NULL) {
- errno = ENOENT;
- }
- goto err;
- }
- addr->u.un->owner = pw.pw_uid;
- addr->u.un->group = pw.pw_gid;
- }
- else if (g_ascii_strncasecmp (*cur_tok, "group=",
- sizeof ("group=") - 1) == 0) {
- p = strchr (*cur_tok, '=');
-
- if (getgrnam_r (p + 1, &gr, pwbuf, pwlen, &pgr) != 0 || pgr == NULL) {
- msg_err ("bad group: %s", p + 1);
- if (pgr == NULL) {
- errno = ENOENT;
- }
- goto err;
- }
- addr->u.un->group = gr.gr_gid;
- }
- cur_tok ++;
- }
-
- if (target) {
- rspamd_ip_validate_af (addr);
- *target = addr;
- }
- else {
- rspamd_inet_address_destroy (addr);
- }
-
- return TRUE;
-
- err:
-
- rspamd_inet_address_destroy (addr);
- return FALSE;
- }
-
- gboolean
- rspamd_parse_inet_address_ip4 (const guchar *text, gsize len, gpointer target)
- {
- const guchar *p;
- guchar c;
- guint32 addr = 0, *addrptr = target;
- guint octet = 0, n = 0;
-
- g_assert (text != NULL);
- g_assert (target != NULL);
-
- if (len == 0) {
- len = strlen (text);
- }
-
- for (p = text; p < text + len; p++) {
- c = *p;
-
- if (c >= '0' && c <= '9') {
- octet = octet * 10 + (c - '0');
-
- if (octet > 255) {
- return FALSE;
- }
-
- continue;
- }
-
- if (c == '.') {
- addr = (addr << 8) + octet;
- octet = 0;
- n++;
- continue;
- }
-
- return FALSE;
- }
-
- if (n == 3) {
- addr = (addr << 8) + octet;
- *addrptr = ntohl (addr);
-
- return TRUE;
- }
-
- return FALSE;
- }
-
- gboolean
- rspamd_parse_inet_address_ip6 (const guchar *text, gsize len, gpointer target)
- {
- guchar t, *zero = NULL, *s, *d, *addr = target;
- const guchar *p, *digit = NULL;
- gsize len4 = 0;
- guint n = 8, nibbles = 0, word = 0;
-
- g_assert (text != NULL);
- g_assert (target != NULL);
-
- if (len == 0) {
- len = strlen (text);
- }
-
- /* Ignore trailing semicolon */
- if (text[0] == ':') {
- p = text + 1;
- len--;
- }
- else {
- p = text;
- }
-
- for (/* void */; len; len--) {
- t = *p++;
-
- if (t == ':') {
- if (nibbles) {
- digit = p;
- len4 = len;
- *addr++ = (u_char) (word >> 8);
- *addr++ = (u_char) (word & 0xff);
-
- if (--n) {
- nibbles = 0;
- word = 0;
- continue;
- }
- } else {
- if (zero == NULL) {
- digit = p;
- len4 = len;
- zero = addr;
- continue;
- }
- }
-
- return FALSE;
- }
-
- if (t == '.' && nibbles) {
- if (n < 2 || digit == NULL) {
- return FALSE;
- }
-
- /* IPv4 encoded in IPv6 */
- if (!rspamd_parse_inet_address_ip4 (digit, len4 - 1, &word)) {
- return FALSE;
- }
-
- word = ntohl (word);
- *addr++ = (guchar) ((word >> 24) & 0xff);
- *addr++ = (guchar) ((word >> 16) & 0xff);
- n--;
- break;
- }
-
- if (++nibbles > 4) {
- /* Too many dots */
- return FALSE;
- }
-
- /* Restore from hex */
- if (t >= '0' && t <= '9') {
- word = word * 16 + (t - '0');
- continue;
- }
-
- t |= 0x20;
-
- if (t >= 'a' && t <= 'f') {
- word = word * 16 + (t - 'a') + 10;
- continue;
- }
-
- return FALSE;
- }
-
- if (nibbles == 0 && zero == NULL) {
- return FALSE;
- }
-
- *addr++ = (guchar) (word >> 8);
- *addr++ = (guchar) (word & 0xff);
-
- if (--n) {
- if (zero) {
- n *= 2;
- s = addr - 1;
- d = s + n;
- while (s >= zero) {
- *d-- = *s--;
- }
- memset (zero, 0, n);
-
- return TRUE;
- }
-
- } else {
- if (zero == NULL) {
- return TRUE;
- }
- }
-
- return FALSE;
- }
-
- gboolean
- rspamd_parse_inet_address (rspamd_inet_addr_t **target,
- const char *src,
- gsize srclen)
- {
- gboolean ret = FALSE;
- rspamd_inet_addr_t *addr = NULL;
- union sa_inet su;
- const char *end;
- char ipbuf[INET6_ADDRSTRLEN + 1];
- guint iplen;
- gulong portnum;
-
- g_assert (src != NULL);
- g_assert (target != NULL);
-
- if (srclen == 0) {
- srclen = strlen (src);
- }
-
- rspamd_ip_check_ipv6 ();
-
- if (src[0] == '/' || src[0] == '.') {
- return rspamd_parse_unix_path (target, src);
- }
-
- if (src[0] == '[') {
- /* Ipv6 address in format [::1]:port or just [::1] */
- end = memchr (src + 1, ']', srclen - 1);
-
- if (end == NULL) {
- return FALSE;
- }
-
- iplen = end - src - 1;
-
- if (iplen == 0 || iplen > sizeof (ipbuf)) {
- return FALSE;
- }
-
- rspamd_strlcpy (ipbuf, src + 1, iplen);
-
- if (ipv6_status == RSPAMD_IPV6_SUPPORTED &&
- rspamd_parse_inet_address_ip6 (ipbuf, iplen - 1,
- &su.s6.sin6_addr)) {
- addr = rspamd_inet_addr_create (AF_INET6);
- memcpy (&addr->u.in.addr.s6.sin6_addr, &su.s6.sin6_addr,
- sizeof (struct in6_addr));
- ret = TRUE;
- }
-
- if (ret && end[1] == ':') {
- /* Port part */
- rspamd_strtoul (end + 1, srclen - iplen - 1, &portnum);
- rspamd_inet_address_set_port (addr, portnum);
- }
- }
- else {
-
- if ((end = memchr (src, ':', srclen)) != NULL) {
- /* This is either port number and ipv4 addr or ipv6 addr */
- /* Search for another semicolon */
- if (memchr (end + 1, ':', srclen - (end - src + 1)) &&
- ipv6_status == RSPAMD_IPV6_SUPPORTED &&
- rspamd_parse_inet_address_ip6 (src, srclen, &su.s6.sin6_addr)) {
- addr = rspamd_inet_addr_create (AF_INET6);
- memcpy (&addr->u.in.addr.s6.sin6_addr, &su.s6.sin6_addr,
- sizeof (struct in6_addr));
- ret = TRUE;
- }
- else {
- /* Not ipv6, so try ip:port */
- iplen = end - src;
-
- if (iplen > sizeof (ipbuf)) {
- return FALSE;
- }
- else {
- rspamd_strlcpy (ipbuf, src, iplen);
- }
-
- if (rspamd_parse_inet_address_ip4 (ipbuf, iplen - 1,
- &su.s4.sin_addr)) {
- addr = rspamd_inet_addr_create (AF_INET);
- memcpy (&addr->u.in.addr.s4.sin_addr, &su.s4.sin_addr,
- sizeof (struct in_addr));
- rspamd_strtoul (end + 1, srclen - iplen - 1, &portnum);
- rspamd_inet_address_set_port (addr, portnum);
- ret = TRUE;
- }
- }
- }
- else {
- if (rspamd_parse_inet_address_ip4 (src, srclen, &su.s4.sin_addr)) {
- addr = rspamd_inet_addr_create (AF_INET);
- memcpy (&addr->u.in.addr.s4.sin_addr, &su.s4.sin_addr,
- sizeof (struct in_addr));
- ret = TRUE;
- }
- else if (ipv6_status == RSPAMD_IPV6_SUPPORTED &&
- rspamd_parse_inet_address_ip6 (src, srclen, &su.s6.sin6_addr)) {
- addr = rspamd_inet_addr_create (AF_INET6);
- memcpy (&addr->u.in.addr.s6.sin6_addr, &su.s6.sin6_addr,
- sizeof (struct in6_addr));
- ret = TRUE;
- }
- }
- }
-
- if (ret && target) {
- *target = addr;
- }
-
- return ret;
- }
-
- const char *
- rspamd_inet_address_to_string (const rspamd_inet_addr_t *addr)
- {
- static char addr_str[INET6_ADDRSTRLEN + 1];
-
- if (addr == NULL) {
- return "<empty inet address>";
- }
-
- switch (addr->af) {
- case AF_INET:
- return inet_ntop (addr->af, &addr->u.in.addr.s4.sin_addr, addr_str,
- sizeof (addr_str));
- case AF_INET6:
- return inet_ntop (addr->af, &addr->u.in.addr.s6.sin6_addr, addr_str,
- sizeof (addr_str));
- case AF_UNIX:
- return addr->u.un->addr.sun_path;
- }
-
- return "undefined";
- }
-
- uint16_t
- rspamd_inet_address_get_port (const rspamd_inet_addr_t *addr)
- {
- switch (addr->af) {
- case AF_INET:
- return ntohs (addr->u.in.addr.s4.sin_port);
- case AF_INET6:
- return ntohs (addr->u.in.addr.s6.sin6_port);
- }
-
- return 0;
- }
-
- void
- rspamd_inet_address_set_port (rspamd_inet_addr_t *addr, uint16_t port)
- {
- switch (addr->af) {
- case AF_INET:
- addr->u.in.addr.s4.sin_port = htons (port);
- break;
- case AF_INET6:
- addr->u.in.addr.s6.sin6_port = htons (port);
- break;
- }
- }
-
- int
- rspamd_inet_address_connect (const rspamd_inet_addr_t *addr, gint type,
- gboolean async)
- {
- int fd, r;
- const struct sockaddr *sa;
-
- if (addr == NULL) {
- return -1;
- }
-
- fd = rspamd_socket_create (addr->af, type, 0, async);
- if (fd == -1) {
- return -1;
- }
-
- if (addr->af == AF_UNIX) {
- sa = (const struct sockaddr *)&addr->u.un->addr;
- }
- else {
- sa = &addr->u.in.addr.sa;
- }
-
- r = connect (fd, sa, addr->slen);
-
- if (r == -1) {
- if (!async || errno != EINPROGRESS) {
- close (fd);
- msg_warn ("connect failed: %d, '%s'", errno,
- strerror (errno));
- return -1;
- }
- }
-
- return fd;
- }
-
- int
- rspamd_inet_address_listen (const rspamd_inet_addr_t *addr, gint type,
- gboolean async)
- {
- gint fd, r;
- gint on = 1;
- const struct sockaddr *sa;
- const char *path;
-
- if (addr == NULL) {
- return -1;
- }
-
- fd = rspamd_socket_create (addr->af, type, 0, async);
- if (fd == -1) {
- return -1;
- }
-
- if (addr->af == AF_UNIX && access (addr->u.un->addr.sun_path, W_OK) != -1) {
- /* Unlink old socket */
- (void)unlink (addr->u.un->addr.sun_path);
- }
-
- if (addr->af == AF_UNIX) {
- sa = (const struct sockaddr *)&addr->u.un->addr;
- }
- else {
- sa = &addr->u.in.addr.sa;
- }
-
- setsockopt (fd, SOL_SOCKET, SO_REUSEADDR, (const void *)&on, sizeof (gint));
-
- #ifdef HAVE_IPV6_V6ONLY
- if (addr->af == AF_INET6) {
- /* We need to set this flag to avoid errors */
- on = 1;
- #ifdef SOL_IPV6
- setsockopt (fd, SOL_IPV6, IPV6_V6ONLY, (const void *)&on, sizeof (gint));
- #elif defined(IPPROTO_IPV6)
- setsockopt (fd, IPPROTO_IPV6, IPV6_V6ONLY, (const void *)&on, sizeof (gint));
- #endif
- }
- #endif
-
- r = bind (fd, sa, addr->slen);
- if (r == -1) {
- if (!async || errno != EINPROGRESS) {
- close (fd);
- msg_warn ("bind failed: %d, '%s'", errno,
- strerror (errno));
- return -1;
- }
- }
-
- if (type != SOCK_DGRAM) {
-
- if (addr->af == AF_UNIX) {
- path = addr->u.un->addr.sun_path;
- /* Try to set mode and owner */
-
- if (addr->u.un->owner != (uid_t)-1 || addr->u.un->group != (gid_t)-1) {
- if (chown (path, addr->u.un->owner, addr->u.un->group) == -1) {
- msg_info ("cannot change owner for %s to %d:%d: %s",
- path, addr->u.un->owner, addr->u.un->group,
- strerror (errno));
- }
- }
-
- if (chmod (path, addr->u.un->mode) == -1) {
- msg_info ("cannot change mode for %s to %od %s",
- path, addr->u.un->mode, strerror (errno));
- }
- }
- r = listen (fd, -1);
-
- if (r == -1) {
- msg_warn ("listen failed: %d, '%s'", errno, strerror (errno));
- close (fd);
- return -1;
- }
- }
-
- return fd;
- }
-
- gssize
- rspamd_inet_address_recvfrom (gint fd, void *buf, gsize len, gint fl,
- rspamd_inet_addr_t **target)
- {
- gssize ret;
- union sa_union su;
- socklen_t slen = sizeof (su);
- rspamd_inet_addr_t *addr = NULL;
-
- if ((ret = recvfrom (fd, buf, len, fl, &su.sa, &slen)) == -1) {
- if (target) {
- *target = NULL;
- }
-
- return -1;
- }
-
- if (target) {
- addr = rspamd_inet_addr_create (su.sa.sa_family);
- addr->slen = slen;
-
- if (addr->af == AF_UNIX) {
- addr->u.un = g_slice_alloc (sizeof (*addr->u.un));
- memcpy (&addr->u.un->addr, &su.su, sizeof (struct sockaddr_un));
- }
- else {
- memcpy (&addr->u.in.addr, &su.sa, MIN (slen, sizeof (addr->u.in.addr)));
- }
-
- *target = addr;
- }
-
- return (ret);
- }
-
- gssize
- rspamd_inet_address_sendto (gint fd, const void *buf, gsize len, gint fl,
- const rspamd_inet_addr_t *addr)
- {
- gssize r;
- const struct sockaddr *sa;
-
- if (addr == NULL) {
- return -1;
- }
-
- if (addr->af == AF_UNIX) {
- sa = (struct sockaddr *)&addr->u.un->addr;
- }
- else {
- sa = &addr->u.in.addr.sa;
- }
-
- r = sendto (fd, buf, len, fl, sa, addr->slen);
-
- return r;
- }
-
- static gboolean
- rspamd_check_port_priority (const char *line, guint default_port,
- guint *priority, gchar *out,
- gsize outlen, rspamd_mempool_t *pool)
- {
- guint real_port = default_port, real_priority = 0;
- gchar *err_str, *err_str_prio;
-
- if (line && line[0] == ':') {
- errno = 0;
- real_port = strtoul (line + 1, &err_str, 10);
-
- if (err_str && *err_str == ':') {
- /* We have priority */
- real_priority = strtoul (err_str + 1, &err_str_prio, 10);
-
- if (err_str_prio && *err_str_prio != '\0') {
- msg_err_pool_check (
- "cannot parse priority: %s, at symbol %c, error: %s",
- line,
- *err_str_prio,
- strerror (errno));
-
- return FALSE;
- }
- }
- else if (err_str && *err_str != '\0') {
- msg_err_pool_check (
- "cannot parse port: %s, at symbol %c, error: %s",
- line,
- *err_str,
- strerror (errno));
-
- return FALSE;
- }
- }
-
- if (priority) {
- *priority = real_priority;
- }
-
- rspamd_snprintf (out, outlen, "%ud", real_port);
-
- return TRUE;
- }
-
- static gboolean
- rspamd_resolve_addrs (const char *begin, size_t len, GPtrArray **addrs,
- const gchar *portbuf, gint flags,
- rspamd_mempool_t *pool)
- {
- struct addrinfo hints, *res, *cur;
- rspamd_inet_addr_t *cur_addr = NULL;
- gint r, addr_cnt;
- gchar *addr_cpy = NULL;
-
- rspamd_ip_check_ipv6 ();
- memset (&hints, 0, sizeof (hints));
- hints.ai_socktype = SOCK_STREAM; /* Type of the socket */
- hints.ai_flags = AI_NUMERICSERV|flags;
-
- if (len > 0) {
- addr_cpy = g_malloc (len + 1);
- rspamd_strlcpy (addr_cpy, begin, len + 1);
- }
- /* Otherwise it will be NULL */
-
- if (ipv6_status == RSPAMD_IPV6_SUPPORTED) {
- hints.ai_family = AF_UNSPEC;
- }
- else {
- hints.ai_family = AF_INET;
- }
-
- if ((r = getaddrinfo (addr_cpy, portbuf, &hints, &res)) == 0) {
- /* Now copy up to max_addrs of addresses */
- addr_cnt = 0;
- cur = res;
- while (cur) {
- cur = cur->ai_next;
- addr_cnt ++;
- }
-
- if (*addrs == NULL) {
- *addrs = g_ptr_array_new_full (addr_cnt,
- (GDestroyNotify)rspamd_inet_address_destroy);
-
- if (pool != NULL) {
- rspamd_mempool_add_destructor (pool,
- rspamd_ptr_array_free_hard, *addrs);
- }
- }
-
- cur = res;
- while (cur) {
- cur_addr = rspamd_inet_address_from_sa (cur->ai_addr,
- cur->ai_addrlen);
-
- if (cur_addr != NULL) {
- g_ptr_array_add (*addrs, cur_addr);
- }
- cur = cur->ai_next;
- }
-
- freeaddrinfo (res);
- }
- else if (addr_cpy) {
- msg_err_pool_check ("address resolution for %s failed: %s",
- addr_cpy,
- gai_strerror (r));
- g_free (addr_cpy);
-
- return FALSE;
- }
- else {
- /* Should never ever happen */
- g_assert (0);
- }
-
- return TRUE;
- }
-
- gboolean
- rspamd_parse_host_port_priority (const gchar *str,
- GPtrArray **addrs,
- guint *priority,
- gchar **name_ptr,
- guint default_port,
- rspamd_mempool_t *pool)
- {
- gchar portbuf[8];
- const gchar *p, *name = NULL;
- gsize namelen;
- rspamd_inet_addr_t *cur_addr = NULL;
-
- /*
- * In this function, we can have several possibilities:
- * 1) Unix socket: check for '.' or '/' at the begin of string
- * 2) \[ipv6\]: check for '[' at the beginning
- * 3) '*': means listening on any address
- * 4) ip|host[:port[:priority]]
- */
-
- if (str[0] == '*') {
- if (!rspamd_check_port_priority (str + 1, default_port, priority,
- portbuf, sizeof (portbuf), pool)) {
- return FALSE;
- }
-
- if (!rspamd_resolve_addrs (str, 0, addrs, portbuf, AI_PASSIVE, pool)) {
- return FALSE;
- }
-
- name = "*";
- namelen = 1;
- }
- else if (str[0] == '[') {
- /* This is braced IPv6 address */
- p = strchr (str, ']');
-
- if (p == NULL) {
- msg_err_pool_check ("cannot parse address definition %s: %s",
- str,
- strerror (EINVAL));
-
- return FALSE;
- }
-
- name = str + 1;
- namelen = p - str - 1;
-
- if (!rspamd_check_port_priority (p + 1, default_port, priority, portbuf,
- sizeof (portbuf), pool)) {
- return FALSE;
- }
-
- if (!rspamd_resolve_addrs (name, namelen, addrs,
- portbuf, 0, pool)) {
- return FALSE;
- }
- }
- else if (str[0] == '/' || str[0] == '.') {
- /* Special case of unix socket, as getaddrinfo cannot deal with them */
- if (*addrs == NULL) {
- *addrs = g_ptr_array_new_full (1,
- (GDestroyNotify)rspamd_inet_address_destroy);
-
- if (pool != NULL) {
- rspamd_mempool_add_destructor (pool,
- rspamd_ptr_array_free_hard, *addrs);
- }
- }
-
- if (!rspamd_parse_inet_address (&cur_addr, str, 0)) {
- msg_err_pool_check ("cannot parse unix socket definition %s: %s",
- str,
- strerror (errno));
-
- return FALSE;
- }
-
- g_ptr_array_add (*addrs, cur_addr);
- name = str;
- namelen = strlen (str);
- }
- else {
- p = strchr (str, ':');
-
- if (p == NULL) {
- /* Just address or IP */
- name = str;
- namelen = strlen (str);
- rspamd_check_port_priority ("", default_port, priority, portbuf,
- sizeof (portbuf), pool);
-
- if (!rspamd_resolve_addrs (name, namelen, addrs,
- portbuf, 0, pool)) {
- return FALSE;
- }
- }
- else {
- name = str;
- namelen = p - str;
-
- if (!rspamd_check_port_priority (p, default_port, priority, portbuf,
- sizeof (portbuf), pool)) {
- return FALSE;
- }
-
- if (!rspamd_resolve_addrs (str, p - str, addrs,
- portbuf, 0, pool)) {
- return FALSE;
- }
- }
- }
-
- if (name_ptr != NULL) {
- if (pool) {
- *name_ptr = rspamd_mempool_alloc (pool, namelen + 1);
- }
- else {
- *name_ptr = g_malloc (namelen + 1);
- }
-
- rspamd_strlcpy (*name_ptr, name, namelen + 1);
- }
-
- return TRUE;
- }
-
- guchar*
- rspamd_inet_address_get_radix_key (const rspamd_inet_addr_t *addr, guint *klen)
- {
- guchar *res = NULL;
- static struct in_addr local = {INADDR_LOOPBACK};
-
- g_assert (addr != NULL);
- g_assert (klen != NULL);
-
- if (addr->af == AF_INET) {
- *klen = sizeof (struct in_addr);
- res = (guchar *)&addr->u.in.addr.s4.sin_addr;
- }
- else if (addr->af == AF_INET6) {
- *klen = sizeof (struct in6_addr);
- res = (guchar *)&addr->u.in.addr.s6.sin6_addr;
- }
- else if (addr->af == AF_UNIX) {
- *klen = sizeof (struct in_addr);
- res = (guchar *)&local;
- }
-
- return res;
- }
-
-
- rspamd_inet_addr_t *
- rspamd_inet_address_new (int af, const void *init)
- {
- rspamd_inet_addr_t *addr;
-
- addr = rspamd_inet_addr_create (af);
-
- if (init != NULL) {
- if (af == AF_UNIX) {
- /* Init is a path */
- rspamd_strlcpy (addr->u.un->addr.sun_path, init,
- sizeof (addr->u.un->addr.sun_path));
- #if defined(FREEBSD) || defined(__APPLE__)
- addr->u.un->addr.sun_len = SUN_LEN (&addr->u.un->addr);
- #endif
- }
- else if (af == AF_INET) {
- memcpy (&addr->u.in.addr.s4.sin_addr, init, sizeof (struct in_addr));
- }
- else if (af == AF_INET6) {
- memcpy (&addr->u.in.addr.s6.sin6_addr, init, sizeof (struct in6_addr));
- }
- }
-
- return addr;
- }
-
- rspamd_inet_addr_t *
- rspamd_inet_address_from_sa (const struct sockaddr *sa, socklen_t slen)
- {
- rspamd_inet_addr_t *addr;
-
- g_assert (sa != NULL);
- g_assert (slen >= sizeof (struct sockaddr));
-
- addr = rspamd_inet_addr_create (sa->sa_family);
-
- if (sa->sa_family == AF_UNIX) {
- /* Init is a path */
- const struct sockaddr_un *un = (const struct sockaddr_un *)sa;
-
- g_assert (slen >= SUN_LEN (un));
-
- rspamd_strlcpy (addr->u.un->addr.sun_path, un->sun_path,
- sizeof (addr->u.un->addr.sun_path));
- #if defined(FREEBSD) || defined(__APPLE__)
- addr->u.un->addr.sun_len = un->sun_len;
- #endif
- }
- else if (sa->sa_family == AF_INET) {
- g_assert (slen >= sizeof (struct sockaddr_in));
- memcpy (&addr->u.in.addr.s4, sa, sizeof (struct sockaddr_in));
- }
- else if (sa->sa_family == AF_INET6) {
- g_assert (slen >= sizeof (struct sockaddr_in6));
- memcpy (&addr->u.in.addr.s6, sa, sizeof (struct sockaddr_in6));
- }
- else {
- /* XXX: currently we cannot deal with other AF */
- g_assert (0);
- }
-
- return addr;
- }
-
- void
- rspamd_inet_address_apply_mask (rspamd_inet_addr_t *addr, guint mask)
- {
- guint32 umsk, *p;
-
- if (mask > 0 && addr != NULL) {
- if (addr->af == AF_INET && mask <= 32) {
- umsk = htonl (G_MAXUINT32 << (32 - mask));
- addr->u.in.addr.s4.sin_addr.s_addr &= umsk;
- }
- else if (addr->af == AF_INET && mask <= 128) {
- p = (uint32_t *)&addr->u.in.addr.s6.sin6_addr;
- p += 3;
- while (mask > 0) {
- umsk = htonl (G_MAXUINT32 << (32 - (mask > 32 ? 32 : mask)));
- *p &= umsk;
- p --;
- mask -= 32;
- }
- }
- }
- }
-
- static gint
- rspamd_inet_address_af_order (const rspamd_inet_addr_t *addr)
- {
- int ret;
-
- switch (addr->af) {
- case AF_UNIX:
- ret = 2;
- break;
- case AF_INET:
- ret = 1;
- break;
- default:
- ret = 0;
- break;
- }
-
- return ret;
- }
-
- gint
- rspamd_inet_address_compare (const rspamd_inet_addr_t *a1,
- const rspamd_inet_addr_t *a2)
- {
- g_assert (a1 != NULL);
- g_assert (a2 != NULL);
-
- if (a1->af != a2->af) {
- return (rspamd_inet_address_af_order (a2) -
- rspamd_inet_address_af_order (a1));
- }
- else {
- switch (a1->af) {
- case AF_INET:
- return memcmp (&a1->u.in.addr.s4.sin_addr,
- &a2->u.in.addr.s4.sin_addr, sizeof (struct in_addr));
- case AF_INET6:
- return memcmp (&a1->u.in.addr.s6.sin6_addr,
- &a2->u.in.addr.s6.sin6_addr, sizeof (struct in6_addr));
- case AF_UNIX:
- return strncmp (a1->u.un->addr.sun_path,
- a2->u.un->addr.sun_path, sizeof (a1->u.un->addr.sun_path));
- default:
- return memcmp (&a1->u.in, &a2->u.in, sizeof (a1->u.in));
- }
- }
-
- return 0;
- }
-
- gint
- rspamd_inet_address_compare_ptr (gconstpointer a1,
- gconstpointer a2)
- {
- const rspamd_inet_addr_t **i1 = (const rspamd_inet_addr_t **)a1,
- **i2 = (const rspamd_inet_addr_t **)a2;
-
- return rspamd_inet_address_compare (*i1, *i2);
- }
-
- rspamd_inet_addr_t *
- rspamd_inet_address_copy (const rspamd_inet_addr_t *addr)
- {
- rspamd_inet_addr_t *n;
-
- if (addr == NULL) {
- return NULL;
- }
-
- n = rspamd_inet_addr_create (addr->af);
-
- if (n->af == AF_UNIX) {
- memcpy (n->u.un, addr->u.un, sizeof (*addr->u.un));
- }
- else {
- memcpy (&n->u.in, &addr->u.in, sizeof (addr->u.in));
- }
-
- return n;
- }
-
- gint
- rspamd_inet_address_get_af (const rspamd_inet_addr_t *addr)
- {
- g_assert (addr != NULL);
-
- return addr->af;
- }
-
-
- guint
- rspamd_inet_address_hash (gconstpointer a)
- {
- const rspamd_inet_addr_t *addr = a;
- XXH64_state_t st;
-
- XXH64_reset (&st, rspamd_hash_seed ());
- XXH64_update (&st, &addr->af, sizeof (addr->af));
-
-
- if (addr->af == AF_UNIX && addr->u.un) {
- XXH64_update (&st, addr->u.un, sizeof (*addr->u.un));
- }
- else {
- /* We ignore port part here */
- if (addr->af == AF_INET) {
- XXH64_update (&st, &addr->u.in.addr.s4.sin_addr,
- sizeof (addr->u.in.addr.s4.sin_addr));
- }
- else {
- XXH64_update (&st, &addr->u.in.addr.s6.sin6_addr,
- sizeof (addr->u.in.addr.s6.sin6_addr));
- }
- }
-
- return XXH64_digest (&st);
- }
-
- gboolean
- rspamd_inet_address_equal (gconstpointer a, gconstpointer b)
- {
- const rspamd_inet_addr_t *a1 = a, *a2 = b;
-
- return rspamd_inet_address_compare (a1, a2) == 0;
- }
-
- #ifndef IN6_IS_ADDR_LOOPBACK
- #define IN6_IS_ADDR_LOOPBACK(a) \
- ((*(const __uint32_t *)(const void *)(&(a)->s6_addr[0]) == 0) && \
- (*(const __uint32_t *)(const void *)(&(a)->s6_addr[4]) == 0) && \
- (*(const __uint32_t *)(const void *)(&(a)->s6_addr[8]) == 0) && \
- (*(const __uint32_t *)(const void *)(&(a)->s6_addr[12]) == ntohl(1)))
- #endif
- #ifndef IN6_IS_ADDR_LINKLOCAL
- #define IN6_IS_ADDR_LINKLOCAL(a) \
- (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0x80))
- #endif
- #ifndef IN6_IS_ADDR_SITELOCAL
- #define IN6_IS_ADDR_SITELOCAL(a) \
- (((a)->s6_addr[0] == 0xfe) && (((a)->s6_addr[1] & 0xc0) == 0xc0))
- #endif
-
- gboolean
- rspamd_inet_address_is_local (const rspamd_inet_addr_t *addr)
- {
- if (addr == NULL) {
- return FALSE;
- }
-
- if (addr->af == AF_UNIX) {
- /* Always true for unix sockets */
- return TRUE;
- }
- else {
- if (addr->af == AF_INET) {
- if ((ntohl (addr->u.in.addr.s4.sin_addr.s_addr) & 0xff000000)
- == 0x7f000000) {
- return TRUE;
- }
- }
- else if (addr->af == AF_INET6) {
- if (IN6_IS_ADDR_LOOPBACK (&addr->u.in.addr.s6.sin6_addr) ||
- IN6_IS_ADDR_LINKLOCAL (&addr->u.in.addr.s6.sin6_addr) ||
- IN6_IS_ADDR_SITELOCAL (&addr->u.in.addr.s6.sin6_addr)) {
- return TRUE;
- }
- }
-
- if (local_addrs) {
- if (radix_find_compressed_addr (local_addrs, addr) != RADIX_NO_VALUE) {
- return TRUE;
- }
- }
- }
-
- return FALSE;
- }
-
- void **
- rspamd_inet_library_init (void)
- {
- return (void **)&local_addrs;
- }
-
- void
- rspamd_inet_library_destroy (void)
- {
- if (local_addrs != NULL) {
- radix_destroy_compressed (local_addrs);
- }
- }
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