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/* |
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* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd) |
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* |
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* Copyright (c) 1997-2014 ircd-hybrid development team |
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* Copyright (c) 1997-2015 ircd-hybrid development team |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 |
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* USA |
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*/ |
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REPORT_HOST_TOOLONG |
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}; |
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#define sendheader(c, i) sendto_one_notice((c), &me, HeaderMessages[(i)]) |
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#define sendheader(c, i) sendto_one_notice((c), &me, "%s", HeaderMessages[(i)]) |
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static dlink_list auth_pending_list; |
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static PF read_auth_reply; |
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static CNCB auth_connect_callback; |
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static void read_auth_reply(fde_t *, void *); |
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static void auth_connect_callback(fde_t *, int, void *); |
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/* |
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static struct AuthRequest * |
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make_auth_request(struct Client *client) |
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{ |
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struct AuthRequest *request = &client->localClient->auth; |
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struct AuthRequest *const request = &client->connection->auth; |
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|
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memset(request, 0, sizeof(*request)); |
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void |
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release_auth_client(struct AuthRequest *auth) |
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{ |
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struct Client *client = auth->client; |
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struct Client *const client = auth->client; |
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if (IsDoingAuth(auth) || IsDNSPending(auth)) |
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return; |
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* us. This is what read_packet() does. |
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* -- adrian |
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*/ |
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client->localClient->allow_read = MAX_FLOOD; |
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comm_setflush(&client->localClient->fd, 1000, flood_recalc, client); |
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client->connection->allow_read = MAX_FLOOD; |
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comm_setflush(&client->connection->fd, 1000, flood_recalc, client); |
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|
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client->localClient->since = CurrentTime; |
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client->localClient->lasttime = CurrentTime; |
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client->localClient->firsttime = CurrentTime; |
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client->connection->since = CurrentTime; |
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client->connection->lasttime = CurrentTime; |
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client->connection->firsttime = CurrentTime; |
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client->flags |= FLAGS_FINISHED_AUTH; |
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read_packet(&client->localClient->fd, client); |
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read_packet(&client->connection->fd, client); |
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} |
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/* |
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static void |
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auth_dns_callback(void *vptr, const struct irc_ssaddr *addr, const char *name, size_t namelength) |
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{ |
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struct AuthRequest *auth = vptr; |
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struct AuthRequest *const auth = vptr; |
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ClearDNSPending(auth); |
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if (!EmptyString(name)) |
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{ |
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const struct sockaddr_in *v4, *v4dns; |
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#ifdef IPV6 |
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const struct sockaddr_in6 *v6, *v6dns; |
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|
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if (auth->client->localClient->ip.ss.ss_family == AF_INET6) |
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if (auth->client->connection->ip.ss.ss_family == AF_INET6) |
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{ |
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v6 = (const struct sockaddr_in6 *)&auth->client->localClient->ip; |
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v6dns = (const struct sockaddr_in6 *)addr; |
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const struct sockaddr_in6 *const v6 = (const struct sockaddr_in6 *)&auth->client->connection->ip; |
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const struct sockaddr_in6 *const v6dns = (const struct sockaddr_in6 *)addr; |
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if (memcmp(&v6->sin6_addr, &v6dns->sin6_addr, sizeof(struct in6_addr)) != 0) |
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{ |
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} |
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} |
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else |
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#endif |
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{ |
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v4 = (const struct sockaddr_in *)&auth->client->localClient->ip; |
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v4dns = (const struct sockaddr_in *)addr; |
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const struct sockaddr_in *const v4 = (const struct sockaddr_in *)&auth->client->connection->ip; |
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const struct sockaddr_in *const v4dns = (const struct sockaddr_in *)addr; |
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if (v4->sin_addr.s_addr != v4dns->sin_addr.s_addr) |
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{ |
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{ |
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struct irc_ssaddr localaddr; |
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socklen_t locallen = sizeof(struct irc_ssaddr); |
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#ifdef IPV6 |
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struct sockaddr_in6 *v6; |
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#else |
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struct sockaddr_in *v4; |
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#endif |
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/* open a socket of the same type as the client socket */ |
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if (comm_open(&auth->fd, auth->client->localClient->ip.ss.ss_family, |
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if (comm_open(&auth->fd, auth->client->connection->ip.ss.ss_family, |
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SOCK_STREAM, 0, "ident") == -1) |
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{ |
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report_error(L_ALL, "creating auth stream socket %s:%s", |
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get_client_name(auth->client, SHOW_IP), errno); |
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ilog(LOG_TYPE_IRCD, "Unable to create auth socket for %s", |
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get_client_name(auth->client, SHOW_IP)); |
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++ServerStats.is_abad; |
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return 0; |
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} |
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sendheader(auth->client, REPORT_DO_ID); |
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/* |
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* get the local address of the client and bind to that to |
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* make the auth request. This used to be done only for |
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* ifdef VIRTUAL_HOST, but needs to be done for all clients |
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* since the ident request must originate from that same address-- |
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* and machines with multiple IP addresses are common now |
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* Get the local address of the client and bind to that to |
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* make the auth request. |
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*/ |
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memset(&localaddr, 0, locallen); |
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getsockname(auth->client->localClient->fd.fd, (struct sockaddr*)&localaddr, |
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getsockname(auth->client->connection->fd.fd, (struct sockaddr*)&localaddr, |
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&locallen); |
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#ifdef IPV6 |
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remove_ipv6_mapping(&localaddr); |
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v6 = (struct sockaddr_in6 *)&localaddr; |
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v6->sin6_port = htons(0); |
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#else |
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localaddr.ss_len = locallen; |
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v4 = (struct sockaddr_in *)&localaddr; |
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v4->sin_port = htons(0); |
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#endif |
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localaddr.ss_port = htons(0); |
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comm_connect_tcp(&auth->fd, auth->client->sockhost, RFC1413_PORT, |
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(struct sockaddr *)&localaddr, localaddr.ss_len, auth_connect_callback, |
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auth, auth->client->localClient->ip.ss.ss_family, |
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auth, auth->client->connection->ip.ss.ss_family, |
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GlobalSetOptions.ident_timeout); |
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return 1; /* We suceed here for now */ |
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} |
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void |
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start_auth(struct Client *client_p) |
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{ |
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struct AuthRequest *auth = NULL; |
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assert(client_p); |
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struct AuthRequest *const auth = make_auth_request(client_p); |
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auth = make_auth_request(client_p); |
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SetInAuth(auth); |
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dlinkAddTail(auth, &auth->node, &auth_pending_list); |
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start_auth_query(auth); |
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} |
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gethost_byaddr(auth_dns_callback, auth, &client_p->localClient->ip); |
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gethost_byaddr(auth_dns_callback, auth, &client_p->connection->ip); |
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} |
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/* |
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static void |
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timeout_auth_queries_event(void *notused) |
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{ |
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dlink_node *ptr = NULL, *ptr_next = NULL; |
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dlink_node *node = NULL, *node_next = NULL; |
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DLINK_FOREACH_SAFE(ptr, ptr_next, auth_pending_list.head) |
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DLINK_FOREACH_SAFE(node, node_next, auth_pending_list.head) |
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{ |
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struct AuthRequest *auth = ptr->data; |
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struct AuthRequest *auth = node->data; |
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if (auth->timeout > CurrentTime) |
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break; |
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sendheader(auth->client, REPORT_FAIL_DNS); |
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} |
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ilog(LOG_TYPE_IRCD, "DNS/AUTH timeout %s", |
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get_client_name(auth->client, SHOW_IP)); |
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release_auth_client(auth); |
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} |
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} |
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static void |
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auth_connect_callback(fde_t *fd, int error, void *data) |
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{ |
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struct AuthRequest *auth = data; |
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struct AuthRequest *const auth = data; |
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struct irc_ssaddr us; |
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struct irc_ssaddr them; |
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char authbuf[32]; |
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char authbuf[16]; |
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socklen_t ulen = sizeof(struct irc_ssaddr); |
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socklen_t tlen = sizeof(struct irc_ssaddr); |
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uint16_t uport, tport; |
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#ifdef IPV6 |
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struct sockaddr_in6 *v6; |
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#else |
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struct sockaddr_in *v4; |
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#endif |
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if (error != COMM_OK) |
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{ |
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return; |
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} |
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if (getsockname(auth->client->localClient->fd.fd, (struct sockaddr *)&us, &ulen) || |
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getpeername(auth->client->localClient->fd.fd, (struct sockaddr *)&them, &tlen)) |
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if (getsockname(auth->client->connection->fd.fd, (struct sockaddr *)&us, &ulen) || |
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getpeername(auth->client->connection->fd.fd, (struct sockaddr *)&them, &tlen)) |
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{ |
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ilog(LOG_TYPE_IRCD, "auth get{sock,peer}name error for %s", |
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get_client_name(auth->client, SHOW_IP)); |
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report_error(L_ALL, "auth get{sock,peer}name error %s:%s", |
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get_client_name(auth->client, SHOW_IP), errno); |
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auth_error(auth); |
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return; |
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} |
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#ifdef IPV6 |
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v6 = (struct sockaddr_in6 *)&us; |
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uport = ntohs(v6->sin6_port); |
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v6 = (struct sockaddr_in6 *)&them; |
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tport = ntohs(v6->sin6_port); |
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remove_ipv6_mapping(&us); |
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remove_ipv6_mapping(&them); |
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#else |
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v4 = (struct sockaddr_in *)&us; |
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uport = ntohs(v4->sin_port); |
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v4 = (struct sockaddr_in *)&them; |
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tport = ntohs(v4->sin_port); |
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us.ss_len = ulen; |
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them.ss_len = tlen; |
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#endif |
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snprintf(authbuf, sizeof(authbuf), "%u, %u\r\n", tport, uport); |
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* \return The userid, or NULL on parse failure. |
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*/ |
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static const char * |
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check_ident_reply(char *reply) |
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check_ident_reply(char *const reply) |
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{ |
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char *token = NULL, *end = NULL; |
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char *vector[USERID_TOKEN_COUNT]; |
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int count = token_vector(reply, ':', vector, USERID_TOKEN_COUNT); |
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> |
const int count = token_vector(reply, ':', vector, USERID_TOKEN_COUNT); |
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if (USERID_TOKEN_COUNT != count) |
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return NULL; |
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static void |
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read_auth_reply(fde_t *fd, void *data) |
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{ |
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struct AuthRequest *auth = data; |
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> |
struct AuthRequest *const auth = data; |
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const char *username = NULL; |
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ssize_t len = 0; |
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char buf[RFC1413_BUFSIZ + 1]; |