-/* $Cambridge: exim/src/src/routers/iplookup.c,v 1.2 2005/01/04 10:00:44 ph10 Exp $ */
-
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2005 */
+/* Copyright (c) The Exim Maintainers 2020 - 2023 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
/* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "../exim.h"
optionlist iplookup_router_options[] = {
{ "hosts", opt_stringptr,
- (void *)(offsetof(iplookup_router_options_block, hosts)) },
+ OPT_OFF(iplookup_router_options_block, hosts) },
{ "optional", opt_bool,
- (void *)(offsetof(iplookup_router_options_block, optional)) },
+ OPT_OFF(iplookup_router_options_block, optional) },
{ "port", opt_int,
- (void *)(offsetof(iplookup_router_options_block, port)) },
+ OPT_OFF(iplookup_router_options_block, port) },
{ "protocol", opt_stringptr,
- (void *)(offsetof(iplookup_router_options_block, protocol_name)) },
+ OPT_OFF(iplookup_router_options_block, protocol_name) },
{ "query", opt_stringptr,
- (void *)(offsetof(iplookup_router_options_block, query)) },
+ OPT_OFF(iplookup_router_options_block, query) },
{ "reroute", opt_stringptr,
- (void *)(offsetof(iplookup_router_options_block, reroute)) },
+ OPT_OFF(iplookup_router_options_block, reroute) },
{ "response_pattern", opt_stringptr,
- (void *)(offsetof(iplookup_router_options_block, response_pattern)) },
+ OPT_OFF(iplookup_router_options_block, response_pattern) },
{ "timeout", opt_time,
- (void *)(offsetof(iplookup_router_options_block, timeout)) }
+ OPT_OFF(iplookup_router_options_block, timeout) }
};
/* Size of the options list. An extern variable has to be used so that its
int iplookup_router_options_count =
sizeof(iplookup_router_options)/sizeof(optionlist);
+
+#ifdef MACRO_PREDEF
+
+/* Dummy entries */
+iplookup_router_options_block iplookup_router_option_defaults = {0};
+void iplookup_router_init(router_instance *rblock) {}
+int iplookup_router_entry(router_instance *rblock, address_item *addr,
+ struct passwd *pw, int verify, address_item **addr_local,
+ address_item **addr_remote, address_item **addr_new,
+ address_item **addr_succeed) {return 0;}
+
+#else /*!MACRO_PREDEF*/
+
+
/* Default private options block for the iplookup router. */
iplookup_router_options_block iplookup_router_option_defaults = {
consistency checks to be done, or anything else that needs to be set up. */
void
-iplookup_router_init(router_instance *rblock)
+iplookup_router_init(router_instance * rblock)
{
-iplookup_router_options_block *ob =
- (iplookup_router_options_block *)(rblock->options_block);
+iplookup_router_options_block * ob =
+ (iplookup_router_options_block *) rblock->options_block;
/* A port and a host list must be given */
log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
"a port must be specified", rblock->name);
-if (ob->hosts == NULL)
+if (!ob->hosts)
log_write(0, LOG_PANIC_DIE|LOG_CONFIG_FOR, "%s router:\n "
"a host list must be specified", rblock->name);
/* Translate protocol name into value */
-if (ob->protocol_name != NULL)
+if (ob->protocol_name)
{
if (Ustrcmp(ob->protocol_name, "udp") == 0) ob->protocol = ip_udp;
else if (Ustrcmp(ob->protocol_name, "tcp") == 0) ob->protocol = ip_tcp;
/* If a response pattern is given, compile it now to get the error early. */
-if (ob->response_pattern != NULL)
+if (ob->response_pattern)
ob->re_response_pattern =
- regex_must_compile(ob->response_pattern, FALSE, TRUE);
+ regex_must_compile(ob->response_pattern, MCS_NOFLAGS, TRUE);
}
router_instance *rblock, /* data for this instantiation */
address_item *addr, /* address we are working on */
struct passwd *pw, /* passwd entry after check_local_user */
- BOOL verify, /* TRUE when verifying */
+ int verify, /* v_none/v_recipient/v_sender/v_expn */
address_item **addr_local, /* add it to this if it's local */
address_item **addr_remote, /* add it to this if it's remote */
address_item **addr_new, /* put new addresses on here */
address_item **addr_succeed) /* put old address here on success */
{
uschar *query = NULL;
-uschar reply[256];
-uschar *hostname, *reroute, *domain, *listptr;
+uschar *reply;
+uschar *hostname, *reroute, *domain;
+const uschar *listptr;
uschar host_buffer[256];
-host_item *host = store_get(sizeof(host_item));
+host_item *host = store_get(sizeof(host_item), GET_UNTAINTED);
address_item *new_addr;
iplookup_router_options_block *ob =
(iplookup_router_options_block *)(rblock->options_block);
-const pcre *re = ob->re_response_pattern;
+const pcre2_code *re = ob->re_response_pattern;
int count, query_len, rc;
int sep = 0;
-addr_local = addr_local; /* Keep picky compilers happy */
-addr_remote = addr_remote;
-addr_succeed = addr_succeed;
-pw = pw;
-
DEBUG(D_route) debug_printf("%s router called for %s: domain = %s\n",
rblock->name, addr->address, addr->domain);
+reply = store_get(256, GET_TAINTED);
+
/* Build the query string to send. If not explicitly given, a default of
"user@domain user@domain" is used. */
being a host list. */
listptr = ob->hosts;
+/* not expanded so should never be tainted */
while ((hostname = string_nextinlist(&listptr, &sep, host_buffer,
- sizeof(host_buffer))) != NULL)
+ sizeof(host_buffer))))
{
host_item *h;
host->mx = MX_NONE;
host->next = NULL;
- if (string_is_ip_address(host->name, NULL))
+ if (string_is_ip_address(host->name, NULL) != 0)
host->address = host->name;
else
{
- int rc = host_find_byname(host, NULL, NULL, TRUE);
+/*XXX might want dnssec request/require on an iplookup router? */
+ int rc = host_find_byname(host, NULL, HOST_FIND_QUALIFY_SINGLE, NULL, TRUE);
if (rc == HOST_FIND_FAILED || rc == HOST_FIND_AGAIN) continue;
}
/* Loop for possible multiple IP addresses for the given name. */
- for (h = host; h != NULL; h = h->next)
+ for (h = host; h; h = h->next)
{
- int host_af, query_socket;
+ int host_af;
+ client_conn_ctx query_cctx = {0};
/* Skip any hosts for which we have no address */
- if (h->address == NULL) continue;
+ if (!h->address) continue;
/* Create a socket, for UDP or TCP, as configured. IPv6 addresses are
detected by checking for a colon in the address. */
host_af = (Ustrchr(h->address, ':') != NULL)? AF_INET6 : AF_INET;
- query_socket = ip_socket((ob->protocol == ip_udp)? SOCK_DGRAM:SOCK_STREAM,
+
+ query_cctx.sock = ip_socket(ob->protocol == ip_udp ? SOCK_DGRAM:SOCK_STREAM,
host_af);
- if (query_socket < 0)
+ if (query_cctx.sock < 0)
{
if (ob->optional) return PASS;
addr->message = string_sprintf("failed to create socket in %s router",
/* Connect to the remote host, under a timeout. In fact, timeouts can occur
here only for TCP calls; for a UDP socket, "connect" always works (the
router will timeout later on the read call). */
+/*XXX could take advantage of TFO */
- if (ip_connect(query_socket, host_af, h->address,ob->port, ob->timeout) < 0)
+ if (ip_connect(query_cctx.sock, host_af, h->address,ob->port, ob->timeout,
+ ob->protocol == ip_udp ? NULL : &tcp_fastopen_nodata) < 0)
{
+ close(query_cctx.sock);
DEBUG(D_route)
debug_printf("connection to %s failed: %s\n", h->address,
strerror(errno));
/* Send the query. If it fails, just continue with the next address. */
- if (send(query_socket, query, query_len, 0) < 0)
+ if (send(query_cctx.sock, query, query_len, 0) < 0)
{
DEBUG(D_route) debug_printf("send to %s failed\n", h->address);
- close(query_socket);
+ (void)close(query_cctx.sock);
continue;
}
/* Read the response and close the socket. If the read fails, try the
next IP address. */
- count = ip_recv(query_socket, reply, sizeof(reply) - 1, ob->timeout);
- close(query_socket);
+ count = ip_recv(&query_cctx, reply, sizeof(reply) - 1, time(NULL) + ob->timeout);
+ (void)close(query_cctx.sock);
if (count <= 0)
{
DEBUG(D_route) debug_printf("%s from %s\n", (errno == ETIMEDOUT)?
/* If h == NULL we have tried all the IP addresses and failed on all of them,
so we must continue to try more host names. Otherwise we have succeeded. */
- if (h != NULL) break;
+ if (h) break;
}
new_addr = deliver_make_addr(reroute, TRUE);
new_addr->parent = addr;
-copyflag(new_addr, addr, af_propagate);
-new_addr->p = addr->p;
+new_addr->prop = addr->prop;
+if (addr->child_count == USHRT_MAX)
+ log_write(0, LOG_MAIN|LOG_PANIC_DIE, "%s router generated more than %d "
+ "child addresses for <%s>", rblock->name, USHRT_MAX, addr->address);
addr->child_count++;
new_addr->next = *addr_new;
*addr_new = new_addr;
-/* Set up the errors address, if any, and the additional and removeable headers
+/* Set up the errors address, if any, and the additional and removable headers
for this new address. */
-rc = rf_get_errors_address(addr, rblock, verify, &(new_addr->p.errors_address));
+rc = rf_get_errors_address(addr, rblock, verify, &new_addr->prop.errors_address);
if (rc != OK) return rc;
-rc = rf_get_munge_headers(addr, rblock, &(new_addr->p.extra_headers),
- &(new_addr->p.remove_headers));
+rc = rf_get_munge_headers(addr, rblock, &new_addr->prop.extra_headers,
+ &new_addr->prop.remove_headers);
if (rc != OK) return rc;
return OK;
}
+#endif /*!MACRO_PREDEF*/
/* End of routers/iplookup.c */
git://git.exim.org / exim.git / blobdiff