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portconfig.c
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/*
* ser2net - A program for allowing telnet connection to serial ports
* Copyright (C) 2020 Corey Minyard <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0-only
*
* In addition, as a special exception, the copyright holders of
* ser2net give you permission to combine ser2net with free software
* programs or libraries that are released under the GNU LGPL and
* with code included in the standard release of OpenSSL under the
* OpenSSL license (or modified versions of such code, with unchanged
* license). You may copy and distribute such a system following the
* terms of the GNU GPL for ser2net and the licenses of the other code
* concerned, provided that you include the source code of that
* other code when and as the GNU GPL requires distribution of source
* code.
*
* Note that people who make modified versions of ser2net are not
* obligated to grant this special exception for their modified
* versions; it is their choice whether to do so. The GNU General
* Public License gives permission to release a modified version
* without this exception; this exception also makes it possible to
* release a modified version which carries forward this exception.
*/
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <gensio/gensio.h>
#include <gensio/argvutils.h>
#include "ser2net.h"
#include "port.h"
#include "absout.h"
#include "readconfig.h"
#include "defaults.h"
#include "led.h"
#ifdef gensio_version_major
/* When the version info was added, the type was changed. */
typedef struct gensio_addr gaddrinfo;
#define gensio_free_addrinfo(o, a) gensio_addr_free(a)
#include <sys/socket.h>
#include <netdb.h>
#else
typedef struct addrinfo gaddrinfo;
#endif
/*
* This infrastructure allows a list of addresses to be kept. This is
* for checking remote addresses
*/
struct port_remaddr
{
char *str;
gaddrinfo *ai;
bool is_port_set;
struct port_remaddr *next;
};
/* Add a remaddr to the given list, return 0 on success or errno on fail. */
static int
remaddr_append(struct port_remaddr **list, struct port_remaddr **cblist,
const char *str, bool is_connect_back)
{
struct port_remaddr *r = NULL, *r2, *rcb = NULL;
gaddrinfo *ai = NULL;
bool is_port_set = false;
int err = 0;
if (!is_connect_back) {
if (*str == '!') {
str++;
is_connect_back = true;
}
#ifdef gensio_version_major
err = gensio_scan_network_port(so, str, false, &ai, NULL,
&is_port_set, NULL, NULL);
#else
int socktype, protocol;
err = gensio_scan_network_port(so, str, false, &ai,
&socktype, &protocol,
&is_port_set, NULL, NULL);
#endif
if (err)
return err;
/* FIXME - We currently ignore the protocol. */
r = malloc(sizeof(*r));
if (!r) {
err = GE_NOMEM;
goto out;
}
memset(r, 0, sizeof(*r));
r->str = strdup(str);
if (!r->str) {
free(r);
r = NULL;
err = GE_NOMEM;
goto out;
}
r->ai = ai;
ai = NULL;
r->is_port_set = is_port_set;
r->next = NULL;
r2 = *list;
if (!r2) {
*list = r;
} else {
while (r2->next)
r2 = r2->next;
r2->next = r;
}
}
if (is_connect_back) {
rcb = malloc(sizeof(*rcb));
if (!rcb) {
err = GE_NOMEM;
goto out;
}
memset(rcb, 0, sizeof(*rcb));
rcb->str = strdup(str);
if (!rcb->str) {
err = GE_NOMEM;
goto out;
}
rcb->next = NULL;
r2 = *cblist;
if (!r2) {
*cblist = rcb;
} else {
while (r2->next)
r2 = r2->next;
r2->next = rcb;
}
}
out:
if (err) {
if (r) {
if (r->str)
free(r->str);
if (r->ai)
gensio_free_addrinfo(so, r->ai);
free(r);
}
if (rcb)
/* rcb->str cannot be set, the last failure is its allocation. */
free(rcb);
if (ai)
gensio_free_addrinfo(so, ai);
}
return err;
}
static bool
ai_check(gaddrinfo *ai, const struct sockaddr *addr, socklen_t len,
bool is_port_set)
{
#ifdef gensio_version_major
return gensio_addr_addr_present(ai, addr, len, is_port_set);
#else
while (ai) {
if (gensio_sockaddr_equal(addr, len, ai->ai_addr, ai->ai_addrlen,
is_port_set))
return true;
ai = ai->ai_next;
}
return false;
#endif
}
/* Check that the given address matches something in the list. */
bool
remaddr_check(const struct port_remaddr *list,
const struct sockaddr *addr, socklen_t len)
{
const struct port_remaddr *r = list;
if (!r)
return true;
for (; r; r = r->next) {
if (ai_check(r->ai, addr, len, r->is_port_set))
return true;
}
return false;
}
void
remaddr_list_free(struct port_remaddr *list)
{
struct port_remaddr *r;
while (list) {
r = list;
list = r->next;
if (r->ai)
gensio_free_addrinfo(so, r->ai);
free(r->str);
free(r);
}
}
static int
port_add_remaddr(struct absout *eout, port_info_t *port, const char *istr)
{
char *str;
char *strtok_data;
char *remstr;
int err = 0;
str = strdup(istr);
if (!str) {
eout->out(eout, "Out of memory handling remote address '%s'", istr);
return ENOMEM;
}
remstr = strtok_r(str, ";", &strtok_data);
/* Note that we ignore an empty remaddr. */
while (remstr && *remstr) {
err = remaddr_append(&port->remaddrs, &port->connbacks, remstr, false);
if (err) {
eout->out(eout, "Error adding remote address '%s': %s\n", remstr,
gensio_err_to_str(err));
break;
}
remstr = strtok_r(NULL, ";", &strtok_data);
}
free(str);
return err;
}
static int
port_add_connback(struct absout *eout, port_info_t *port, const char *istr)
{
char *str;
char *strtok_data;
char *remstr;
int err = 0;
str = strdup(istr);
if (!str) {
eout->out(eout, "Out of memory handling connect back address '%s'",
istr);
return ENOMEM;
}
remstr = strtok_r(str, ";", &strtok_data);
/* Note that we ignore an empty remaddr. */
while (remstr && *remstr) {
err = remaddr_append(NULL, &port->connbacks, remstr, true);
if (err) {
eout->out(eout, "Error adding connect back address '%s': %s\n",
remstr, gensio_err_to_str(err));
break;
}
remstr = strtok_r(NULL, ";", &strtok_data);
}
free(str);
return err;
}
/* Must be called with port->lock held. */
static void
finish_free_port(port_info_t *port)
{
assert(port->free_count > 0);
port->free_count--;
if (port->free_count != 0) {
so->unlock(port->lock);
return;
}
so->unlock(port->lock);
so->free_lock(port->lock);
remaddr_list_free(port->remaddrs);
remaddr_list_free(port->connbacks);
if (port->accepter)
gensio_acc_free(port->accepter);
if (port->dev_to_net.buf)
free(port->dev_to_net.buf);
if (port->net_to_dev.buf)
free(port->net_to_dev.buf);
if (port->timer)
so->free_timer(port->timer);
if (port->send_timer)
so->free_timer(port->send_timer);
if (port->runshutdown)
so->free_runner(port->runshutdown);
if (port->io)
gensio_free(port->io);
if (port->trace_read.filename)
free(port->trace_read.filename);
if (port->trace_write.filename)
free(port->trace_write.filename);
if (port->trace_both.filename)
free(port->trace_both.filename);
if (port->devname)
free(port->devname);
if (port->name)
free(port->name);
if (port->accstr)
free(port->accstr);
if (port->new_config)
free_port(port->new_config);
if (port->bannerstr)
free(port->bannerstr);
if (port->signaturestr)
free(port->signaturestr);
if (port->authdir)
free(port->authdir);
free_user_list(port->allowed_users);
if (port->default_allowed_users)
free(port->default_allowed_users);
if (port->openstr)
free(port->openstr);
if (port->closestr)
free(port->closestr);
if (port->closeon)
free(port->closeon);
if (port->netcons)
free(port->netcons);
if (port->orig_devname)
free(port->orig_devname);
if (port->sendon)
free(port->sendon);
#ifdef DO_MDNS
if (port->mdns_name)
free(port->mdns_name);
if (port->mdns_type)
free(port->mdns_type);
if (port->mdns_domain)
free(port->mdns_domain);
if (port->mdns_host)
free(port->mdns_host);
if (port->mdns_txt)
gensio_argv_free(so, port->mdns_txt);
#endif /* DO_MDNS */
free(port);
}
static void
gen_timer_shutdown_done(struct gensio_timer *timer, void *cb_data)
{
port_info_t *port = cb_data;
so->lock(port->lock);
finish_free_port(port); /* Releases lock */
}
void
free_port(port_info_t *port)
{
net_info_t *netcon;
int err;
if (port->netcons) {
for_each_connection(port, netcon) {
char *err = "Port was deleted\n\r";
if (netcon->new_net) {
gensio_write(netcon->new_net, NULL, err, strlen(err), NULL);
gensio_free(netcon->new_net);
}
}
}
so->lock(port->lock);
port->free_count = 1;
/* Make sure all the timers are stopped. */
if (port->send_timer) {
err = so->stop_timer_with_done(port->send_timer,
gen_timer_shutdown_done, port);
if (err != GE_TIMEDOUT)
port->free_count++;
}
if (port->timer) {
err = so->stop_timer_with_done(port->timer,
gen_timer_shutdown_done, port);
if (err != GE_TIMEDOUT)
port->free_count++;
}
finish_free_port(port); /* Releases lock */
}
static int
strdupcat(char **str, const char *cat)
{
char *s = malloc(strlen(*str) + strlen(cat) + 2);
if (!s)
return ENOMEM;
strcpy(s, *str);
strcat(s, ",");
strcat(s, cat);
free(*str);
*str = s;
return 0;
}
static const char *serialdev_parms[] = {
"XONXOFF", NULL,
"-XONXOFF", "xonxoff=false",
"RTSCTS", NULL,
"-RTSCTS", "rtscts=false",
"LOCAL", NULL,
"-LOCAL", "local=false",
"HANGUP_WHEN_DONE", "hangup-when-done",
"-HANGUP_WHEN_DONE", "hangup-when-done=false",
"NOBREAK", NULL,
"-NOBREAK", "nobreak=false",
"NONE", NULL,
"EVEN", NULL,
"ODD", NULL,
"MARK", NULL,
"SPACE", NULL,
NULL
};
static bool
matchstr(const char *parms[], const char *c, const char **newval)
{
unsigned int i;
for (i = 0; parms[i]; i += 2) {
if (strcmp(parms[i], c) == 0) {
if (parms[i + 1])
*newval = parms[i + 1];
else
*newval = parms[i];
return true;
}
}
return false;
}
static int
check_keyvalue_default(const char *str, const char *name, const char **value,
const char *def)
{
if (strcmp(str, name) == 0)
*value = def;
else
return gensio_check_keyvalue(str, name, value);
return 1;
}
static int
update_str_val(const char *str, char **outstr, const char *name,
struct absout *eout)
{
char *fval = strdup(str);
if (!fval) {
eout->out(eout, "Out of memory allocating %s", name);
return -1;
}
if (*outstr)
free(*outstr);
*outstr = fval;
return 0;
}
#ifdef DO_MDNS
static struct gensio_enum_val mdns_nettypes[] = {
{ "unspec", GENSIO_NETTYPE_UNSPEC },
{ "ipv4", GENSIO_NETTYPE_IPV4 },
{ "ipv6", GENSIO_NETTYPE_IPV6 },
{ NULL }
};
#endif /* DO_MDNS */
static int
myconfig(port_info_t *port, struct absout *eout, const char *pos)
{
enum str_type stype;
char *s, *fval;
const char *val, *newval = pos;
unsigned int len;
int rv;
/*
* This is a hack for backwards compatibility, if we see a config
* item meant for the device, we stick it onto the device name.
*/
if (isdigit(pos[0]) || matchstr(serialdev_parms, pos, &newval)) {
int err = strdupcat(&port->devname, newval);
if (err) {
eout->out(eout, "Out of memory appending to devname");
return -1;
}
} else if (gensio_check_keybool(pos, "kickolduser",
&port->kickolduser_mode) > 0) {
} else if (gensio_check_keybool(pos, "trace-hexdump",
&port->trace_read.hexdump) > 0) {
port->trace_write.hexdump = port->trace_read.hexdump;
port->trace_both.hexdump = port->trace_read.hexdump;
} else if (gensio_check_keybool(pos, "trace-timestamp",
&port->trace_read.timestamp) > 0) {
port->trace_write.timestamp = port->trace_read.timestamp;
port->trace_both.timestamp = port->trace_read.timestamp;
} else if (gensio_check_keybool(pos, "trace-read-hexdump",
&port->trace_read.hexdump) > 0) {
} else if (gensio_check_keybool(pos, "trace-read-timestamp",
&port->trace_read.timestamp) > 0) {
} else if (gensio_check_keybool(pos, "trace-write-hexdump",
&port->trace_write.hexdump) > 0) {
} else if (gensio_check_keybool(pos, "trace-write-timestamp",
&port->trace_write.timestamp) > 0) {
} else if (gensio_check_keybool(pos, "trace-both-hexdump",
&port->trace_both.hexdump) > 0) {
} else if (gensio_check_keybool(pos, "trace-both-timestamp",
&port->trace_both.timestamp) > 0) {
} else if (gensio_check_keyvalue(pos, "trace-read", &val) > 0) {
/* trace read, data from the port to the socket */
if (update_str_val(val, &port->trace_read.filename, "trace-read", eout))
return -1;
} else if (gensio_check_keyvalue(pos, "trace-write", &val) > 0) {
/* trace write, data from the socket to the port */
if (update_str_val(val, &port->trace_write.filename, "trace-write",
eout))
return -1;
} else if (gensio_check_keyvalue(pos, "trace-both", &val) > 0) {
/* trace both directions. */
if (update_str_val(val, &port->trace_both.filename, "trace-both", eout))
return -1;
} else if (gensio_check_keyvalue(pos, "led-rx", &val) > 0) {
/* LED for UART RX traffic */
port->led_rx = find_led(val);
if (!port->led_rx) {
eout->out(eout, "Could not find led-rx LED: %s", val);
return -1;
}
} else if (gensio_check_keyvalue(pos, "led-tx", &val) > 0) {
/* LED for UART TX traffic */
port->led_tx = find_led(val);
if (!port->led_tx) {
eout->out(eout, "Could not find led-tx LED: %s", val);
return -1;
}
} else if (gensio_check_keybool(pos, "telnet-brk-on-sync",
&port->telnet_brk_on_sync) > 0) {
} else if (gensio_check_keybool(pos, "chardelay",
&port->enable_chardelay) > 0) {
} else if (gensio_check_keybool(pos, "no-con-to-acc",
&port->no_dev_to_net) > 0) {
} else if (gensio_check_keybool(pos, "no-acc-to-con",
&port->no_net_to_dev) > 0) {
} else if (gensio_check_keyuint(pos, "chardelay-scale",
&port->chardelay_scale) > 0) {
} else if (gensio_check_keyuint(pos, "chardelay-min",
&port->chardelay_min) > 0) {
} else if (gensio_check_keyuint(pos, "chardelay-max",
&port->chardelay_max) > 0) {
} else if (gensio_check_keyds(pos, "dev-to-net-bufsize",
&port->dev_to_net.maxsize) > 0) {
if (port->dev_to_net.maxsize < 2)
port->dev_to_net.maxsize = 2;
} else if (gensio_check_keyds(pos, "net-to-dev-bufsize",
&port->net_to_dev.maxsize) > 0) {
if (port->net_to_dev.maxsize < 2)
port->net_to_dev.maxsize = 2;
} else if (gensio_check_keyuint(pos, "max-connections",
&port->max_connections) > 0) {
if (port->max_connections < 1)
port->max_connections = 1;
} else if (gensio_check_keyuint(pos, "accepter-retry-time",
&port->accepter_retry_time) > 0) {
if (port->accepter_retry_time < 1)
port->accepter_retry_time = 1;
} else if (gensio_check_keyuint(pos, "connector-retry-time",
&port->connector_retry_time) > 0) {
if (port->connector_retry_time < 1)
port->connector_retry_time = 1;
} else if (gensio_check_keyvalue(pos, "authdir", &val) > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating authdir");
return -1;
}
if (port->authdir)
free(port->authdir);
port->authdir = fval;
} else if (gensio_check_keyvalue(pos, "pamauth", &val) > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating pamauth");
return -1;
}
if (port->pamauth)
free(port->pamauth);
port->pamauth = fval;
} else if (gensio_check_keyvalue(pos, "allowed-users", &val) > 0) {
rv = add_allowed_users(&port->allowed_users, val, eout);
if (rv)
return -1;
} else if (gensio_check_keyvalue(pos, "remaddr", &val) > 0) {
rv = port_add_remaddr(eout, port, val);
if (rv)
return -1;
} else if (gensio_check_keyvalue(pos, "connback", &val) > 0) {
rv = port_add_connback(eout, port, val);
if (rv)
return -1;
} else if (check_keyvalue_default(pos, "banner", &val, "") > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating banner");
return -1;
}
if (port->bannerstr)
free(port->bannerstr);
port->bannerstr = fval;
} else if (check_keyvalue_default(pos, "openstr", &val, "") > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating openstr");
return -1;
}
if (port->openstr)
free(port->openstr);
port->openstr = fval;
} else if (check_keyvalue_default(pos, "closestr", &val, "") > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating closestr");
return -1;
}
if (port->closestr)
free(port->closestr);
port->closestr = fval;
} else if (gensio_check_keyvalue(pos, "closeon", &val) > 0) {
struct timeval tv = { 0, 0 };
gensiods len;
fval = process_str_to_str(port, NULL, val, &tv, &len, false);
if (!fval) {
eout->out(eout, "Out of memory allocating closeon");
return -1;
}
if (port->closeon)
free(port->closeon);
port->closeon = fval;
port->closeon_len = len;
} else if (check_keyvalue_default(pos, "signature", &val, "") > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory banner");
return -1;
}
if (port->signaturestr)
free(port->signaturestr);
port->signaturestr = fval;
} else if (gensio_check_keyvalue(pos, "sendon", &val) > 0) {
struct timeval tv = { 0, 0 };
gensiods len;
fval= process_str_to_str(port, NULL, val, &tv, &len, false);
if (!fval) {
eout->out(eout, "Out of memory allocating sendon");
return -1;
}
if (port->sendon)
free(port->sendon);
port->sendon = fval;
port->sendon_len = len;
#ifdef DO_MDNS
} else if (gensio_check_keybool(pos, "mdns",
&port->mdns) > 0) {
} else if (gensio_check_keybool(pos, "mdns-sysattrs",
&port->do_mdns_sysattrs) > 0) {
} else if (gensio_check_keyuint(pos, "mdns-port",
&port->mdns_port) > 0) {
} else if (gensio_check_keyint(pos, "mdns-interface",
&port->mdns_interface) > 0) {
} else if (gensio_check_keyenum(pos, "mdns-nettype",
mdns_nettypes,
&port->mdns_nettype) > 0) {
} else if (gensio_check_keyvalue(pos, "mdns-name", &val) > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating mdns-name");
return -1;
}
if (port->mdns_name)
free(port->mdns_name);
port->mdns_name = fval;
} else if (gensio_check_keyvalue(pos, "mdns-type", &val) > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating mdns-type");
return -1;
}
if (port->mdns_type)
free(port->mdns_type);
port->mdns_type = fval;
} else if (gensio_check_keyvalue(pos, "mdns-domain", &val) > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating mdns-domain");
return -1;
}
if (port->mdns_domain)
free(port->mdns_domain);
port->mdns_domain = fval;
} else if (gensio_check_keyvalue(pos, "mdns-host", &val) > 0) {
fval = strdup(val);
if (!fval) {
eout->out(eout, "Out of memory allocating mdns-host");
return -1;
}
if (port->mdns_host)
free(port->mdns_host);
port->mdns_host = fval;
} else if (gensio_check_keyvalue(pos, "mdns-txt", &val) > 0) {
int err = gensio_argv_append(so, &port->mdns_txt, val,
&port->mdns_txt_args, &port->mdns_txt_argc,
true);
if (err) {
eout->out(eout, "Out of memory allocating mdns-txt: %s",
gensio_err_to_str(err));
return -1;
}
#endif /* DO_MDNS */
/* Everything from here down to the banner, etc is deprecated. */
} else if (strcmp(pos, "remctl") == 0) {
port->allow_2217 = true;
} else if (strcmp(pos, "-remctl") == 0) {
port->allow_2217 = false;
} else if (strcmp(pos, "-kickolduser") == 0) {
port->kickolduser_mode = 0;
} else if (strcmp(pos, "-hexdump") == 0) {
port->trace_read.hexdump = false;
port->trace_write.hexdump = false;
port->trace_both.hexdump = false;
} else if (strcmp(pos, "-timestamp") == 0) {
port->trace_read.timestamp = false;
port->trace_write.timestamp = false;
port->trace_both.timestamp = false;
} else if (strcmp(pos, "-tr-hexdump") == 0) {
port->trace_read.hexdump = false;
} else if (strcmp(pos, "-tr-timestamp") == 0) {
port->trace_read.timestamp = false;
} else if (strcmp(pos, "-tw-hexdump") == 0) {
port->trace_write.hexdump = false;
} else if (strcmp(pos, "-tw-timestamp") == 0) {
port->trace_write.timestamp = false;
} else if (strcmp(pos, "-tb-hexdump") == 0) {
port->trace_both.hexdump = false;
} else if (strcmp(pos, "-tb-timestamp") == 0) {
port->trace_both.timestamp = false;
} else if (gensio_check_keyvalue(pos, "tr", &val) > 0) {
/* trace read, data from the port to the socket */
port->trace_read.filename = find_tracefile(val);
} else if (gensio_check_keyvalue(pos, "tw", &val) > 0) {
/* trace write, data from the socket to the port */
port->trace_write.filename = find_tracefile(val);
} else if (gensio_check_keyvalue(pos, "tb", &val) > 0) {
/* trace both directions. */
port->trace_both.filename = find_tracefile(val);
} else if (gensio_check_keyvalue(pos, "rs485", &val) > 0) {
port->rs485 = find_rs485conf(val);
} else if (strcmp(pos, "telnet_brk_on_sync") == 0) {
port->telnet_brk_on_sync = 1;
} else if (strcmp(pos, "-telnet_brk_on_sync") == 0) {
port->telnet_brk_on_sync = 0;
} else if (strcmp(pos, "-chardelay") == 0) {
port->enable_chardelay = false;
/* Banner and friend handling. */
} else if ((s = find_str(pos, &stype, &len))) {
/* It's a startup banner, signature or open/close string, it's
already set. */
switch (stype) {
case BANNER: port->bannerstr = s; break;
case SIGNATURE: port->signaturestr = s; break;
case OPENSTR: port->openstr = s; break;
case CLOSESTR: port->closestr = s; break;
case CLOSEON: port->closeon = s; port->closeon_len = len; break;
default: free(s); goto unknown;
}
} else {
unknown:
eout->out(eout, "Unknown config item: %s", pos);
return -1;
}
return 0;
}
static void
process_connect_back(struct absout *eout, port_info_t *port,
struct port_remaddr *r)
{
net_info_t *netcon;
for_each_connection(port, netcon) {
if (netcon->remote_fixed)
continue;
netcon->remote_fixed = true;
netcon->remote_str = r->str;
netcon->connect_back = true;
return;
}
if (eout)
eout->out(eout, "Too many connect back remote addresses specified"
" for the max-connections given");
}
static int
init_port_data(port_info_t *port)
{
port->enabled = false;
port->net_to_dev_state = PORT_CLOSED;
port->dev_to_net_state = PORT_CLOSED;
port->trace_read.fd = -1;
port->trace_write.fd = -1;
port->trace_both.fd = -1;
port->telnet_brk_on_sync = find_default_bool("telnet-brk-on-sync");
port->kickolduser_mode = find_default_bool("kickolduser");
port->enable_chardelay = find_default_int("chardelay");
port->chardelay_scale = find_default_int("chardelay-scale");
port->chardelay_min = find_default_int("chardelay-min");
port->chardelay_max = find_default_int("chardelay-max");
port->dev_to_net.maxsize = find_default_int("dev-to-net-bufsize");
port->net_to_dev.maxsize = find_default_int("net-to-dev-bufsize");
port->max_connections = find_default_int("max-connections");
port->connector_retry_time = find_default_int("connector-retry-time");
port->accepter_retry_time = find_default_int("accepter-retry-time");
if (find_default_str("authdir", &port->authdir))
return ENOMEM;
if (find_default_str("pamauth", &port->pamauth))
return ENOMEM;
if (find_default_str("allowed-users", &port->default_allowed_users))
return ENOMEM;
if (find_default_str("signature", &port->signaturestr))
return ENOMEM;
if (find_default_str("banner", &port->bannerstr))
return ENOMEM;
if (find_default_str("openstr", &port->openstr))
return ENOMEM;
if (find_default_str("closestr", &port->closestr))
return ENOMEM;
if (find_default_str("closeon", &port->closeon))
return ENOMEM;
if (find_default_str("sendon", &port->sendon))
return ENOMEM;
port->led_tx = NULL;
port->led_rx = NULL;
#ifdef DO_MDNS
port->mdns = find_default_bool("mdns");
port->do_mdns_sysattrs = find_default_bool("mdns-sysattrs");
port->mdns_interface = find_default_int("mdns-interface");
if (find_default_str("mdns-type", &port->mdns_type))
return ENOMEM;
if (find_default_str("mdns-domain", &port->mdns_domain))
return ENOMEM;
if (find_default_str("mdns-host", &port->mdns_host))
return ENOMEM;
#endif /* DO_MDNS */
return 0;
}
/* Create a port based on a set of parameters passed in. */
int
portconfig(struct absout *eout,
const char *name,
const char *accstr,
const char *state,
unsigned int timeout,
const char *devname,
const char * const *devcfg)
{
port_info_t *new_port, *curr;
net_info_t *netcon;
enum str_type str_type;
int err;
bool write_only = false;
unsigned int i;
struct port_remaddr *r;
so->lock(ports_lock);
curr = new_ports;
while (curr) {
if (strcmp(curr->name, name) == 0) {
/* We don't allow duplicate names. */
so->unlock(ports_lock);
eout->out(eout, "Duplicate connection name: %s", name);
return -1;
}
curr = curr->next;
}
so->unlock(ports_lock);
new_port = malloc(sizeof(port_info_t));
if (new_port == NULL) {
eout->out(eout, "Could not allocate a port data structure");
return -1;
}
memset(new_port, 0, sizeof(*new_port));
new_port->lock = so->alloc_lock(so);
if (!new_port->lock) {
eout->out(eout, "Could not allocate lock");
goto errout;
}
new_port->devname = find_str(devname, &str_type, NULL);
if (new_port->devname) {
if (str_type != DEVNAME) {
free(new_port->devname);
new_port->devname = NULL;
} else {
new_port->orig_devname = strdup(devname);
if (!new_port->orig_devname) {
eout->out(eout, "unable to allocate original device name");
goto errout;
}
}
}
if (!new_port->devname)
new_port->devname = strdup(devname);
if (!new_port->devname) {
eout->out(eout, "unable to allocate device name");
goto errout;
}
init_port_data(new_port);
if (!new_port->name) {
new_port->name = strdup(name);
if (!new_port->name) {
eout->out(eout, "unable to allocate port name");
goto errout;
}
}
if (!new_port->accstr) {
new_port->accstr = strdup(accstr);
if (!new_port->accstr) {
eout->out(eout, "unable to allocate port accepter string");
goto errout;
}
}
if (strcmp(state, "on") == 0) {
new_port->enabled = true;
} else if (strcmp(state, "raw") == 0) {
new_port->enabled = true;
} else if (strcmp(state, "rawlp") == 0) {
/* FIXME - remove this someday. */
new_port->enabled = true;
write_only = true;
} else if (strcmp(state, "telnet") == 0) {
/* FIXME - remove this someday. */
new_port->enabled = true;
new_port->do_telnet = true;
} else if (strcmp(state, "off") == 0) {
new_port->enabled = false;
} else {
eout->out(eout, "state was invalid");
goto errout;
}
new_port->timeout = timeout;
for (i = 0; devcfg[i]; i++) {
err = myconfig(new_port, eout, devcfg[i]);
if (err)
goto errout;
}
if (write_only) {
err = strdupcat(&new_port->devname, "WRONLY");
if (err) {
eout->out(eout, "Out of memory appending to devname");
goto errout;
}
}
if (new_port->rs485) {