* Copyright 1997 Piermont Information Systems Inc.

/* $NetBSD: net.c,v 1.45 2023/12/17 18:46:42 martin Exp $ */

/*
* Copyright 1997 Piermont Information Systems Inc.
* All rights reserved.
*
* Written by Philip A. Nelson for Piermont Information Systems Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of Piermont Information Systems Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
*/

/* net.c -- routines to fetch files off the network. */

#include <sys/ioctl.h>
#include <sys/param.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#include <sys/statvfs.h>
#include <sys/sysctl.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <net/if_media.h>
#include <netinet/in.h>
#include <net80211/ieee80211_ioctl.h>
#include <netinet/ip_var.h>
#ifdef INET6
#include <netinet6/ip6_var.h>
#endif

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curses.h>
#include <time.h>
#include <unistd.h>

#include "defs.h"
#include "md.h"
#include "msg_defs.h"
#include "menu_defs.h"
#include "txtwalk.h"

int network_up = 0;
/* Access to network information */
#define MAX_NETS 15
struct net_desc {
char if_dev[STRSIZE];
char name[STRSIZE]; // TODO
};

static char net_dev[STRSIZE];
static char net_domain[STRSIZE];
static char net_host[STRSIZE];
static char net_ip[SSTRSIZE];
static char net_srv_ip[SSTRSIZE];
static char net_mask[SSTRSIZE];
char net_namesvr[STRSIZE];
static char net_defroute[STRSIZE];
static char net_media[STRSIZE];
static char net_ssid[STRSIZE];
static char net_passphrase[STRSIZE];
static char sl_flags[STRSIZE];
static int net_dhcpconf;
#define DHCPCONF_IPADDR 0x01
#define DHCPCONF_NAMESVR 0x02
#define DHCPCONF_HOST 0x04
#define DHCPCONF_DOMAIN 0x08
#ifdef INET6
static char net_ip6[STRSIZE];
#define IP6CONF_AUTOHOST 0x01
#endif

/* URL encode unsafe characters. */

static char *url_encode (char *dst, const char *src, const char *ep,
const char *safe_chars,
int encode_leading_slash);

static void write_etc_hosts(FILE *f);

#define DHCPCD "/sbin/dhcpcd"
#define WPA_SUPPLICANT "/usr/sbin/wpa_supplicant"
#include <signal.h>
static int config_eth_medium(char *);
static int config_dhcp(char *);
static int config_wlan(char *);

#ifdef INET6
static int is_v6kernel (void);
#endif

/*
* URL encode unsafe characters. See RFC 1738.
*
* Copies src string to dst, encoding unsafe or reserved characters
* in %hex form as it goes, and returning a pointer to the result.
* The result is always a nul-terminated string even if it had to be
* truncated to avoid overflowing the available space.
*
* This url_encode() function does not operate on complete URLs, it
* operates on strings that make up parts of URLs. For example, in a
* URL like "ftp://username:password@host/path", the username, password,
* host and path should each be encoded separately before they are
* joined together with the punctuation characters.
*
* In most ordinary use, the path portion of a URL does not start with
* a slash; the slash is a separator between the host portion and the
* path portion, and is dealt with by software outside the url_encode()
* function. However, it is valid for url_encode() to be passed a
* string that does begin with a slash. For example, the string might
* represent a password, or a path part of a URL that the user really
* does want to begin with a slash.
*
* len is the length of the destination buffer. The result will be
* truncated if necessary to fit in the destination buffer.
*
* safe_chars is a string of characters that should not be encoded. If
* safe_chars is non-NULL, any characters in safe_chars as well as any
* alphanumeric characters will be copied from src to dst without
* encoding. Some potentially useful settings for this parameter are:
*
* NULL Everything is encoded (even alphanumerics)
* "" Everything except alphanumerics are encoded
* "/" Alphanumerics and '/' remain unencoded
* "$-_.+!*'()," Consistent with a strict reading of RFC 1738
* "$-_.+!*'(),/" As above, except '/' is not encoded
* "-_.+!,/" As above, except shell special characters are encoded
*
* encode_leading_slash is a flag that determines whether or not to
* encode a leading slash in a string. If this flag is set, and if the
* first character in the src string is '/', then the leading slash will
* be encoded (as "%2F"), even if '/' is one of the characters in the
* safe_chars string. Note that only the first character of the src
* string is affected by this flag, and that leading slashes are never
* deleted, but either retained unchanged or encoded.
*
* Unsafe and reserved characters are defined in RFC 1738 section 2.2.
* The most important parts are:
*
* The characters ";", "/", "?", ":", "@", "=" and "&" are the
* characters which may be reserved for special meaning within a
* scheme. No other characters may be reserved within a scheme.
* [...]
*
* Thus, only alphanumerics, the special characters "$-_.+!*'(),",
* and reserved characters used for their reserved purposes may be
* used unencoded within a URL.
*
*/

#define RFC1738_SAFE "$-_.+!*'(),"
#define RFC1738_SAFE_LESS_SHELL "-_.+!,"
#define RFC1738_SAFE_LESS_SHELL_PLUS_SLASH "-_.+!,/"

static char *
url_encode(char *dst, const char *src, const char *ep,
const char *safe_chars, int encode_leading_slash)
{
int ch;

ep--;

for (; dst < ep; src++) {
ch = *src & 0xff;
if (ch == 0)
break;
if (safe_chars != NULL &&
(ch != '/' || !encode_leading_slash) &&
(isalnum(ch) || strchr(safe_chars, ch))) {
*dst++ = ch;
} else {
/* encode this char */
if (ep - dst < 3)
break;
snprintf(dst, ep - dst, "%%%02X", ch);
dst += 3;
}
encode_leading_slash = 0;
}
*dst = '\0';
return dst;
}

static const char *ignored_if_names[] = {
"gre", /* net */
"ipip", /* netinet */
"gif", /* netinet6 */
"faith", /* netinet6 */
"lo", /* net */
"lo0", /* net */
#if 0
"mdecap", /* netinet -- never in IF list (?) XXX */
#endif
"ppp", /* net */
#if 0
"sl", /* net */
#endif
"strip", /* net */
"tun", /* net */
/* XXX others? */
NULL,
};

static bool
have_working_ipv4(void)
{
uint64_t ipstats[IP_NSTATS];
size_t size = sizeof(ipstats);

/* At least some packets delivered to upper layers? */
if (sysctlbyname("net.inet.ip.stats", ipstats, &size, NULL, 0) == -1)
return false;
if (ipstats[IP_STAT_DELIVERED] < 10) /* arbitrary threshold */
return false;

/* do we have a default route? */
if (run_program(RUN_SILENT|RUN_ERROR_OK,
"/sbin/route get -inet default") != 0)
return false;

return true;
}

#ifdef INET6
static bool
have_working_ipv6(void)
{
uint64_t ipstats[IP6_NSTATS];
size_t size = sizeof(ipstats);

/* At least some packets delivered to upper layers? */
if (sysctlbyname("net.inet6.ip6.stats", ipstats, &size, NULL, 0) == -1)
return false;
if (ipstats[IP6_STAT_DELIVERED] < 10) /* arbitrary threshold */
return false;

/* do we have a default route? */
if (run_program(RUN_SILENT|RUN_ERROR_OK,
"/sbin/route get -inet6 default") != 0)
return false;

return true;
}
#else
#define have_working_ipv6() false
#endif

static int
get_ifconfig_info(struct net_desc *devs)
{
char *buf_in;
char *buf_tmp;
const char **ignore;
char *buf;
char *tmp;
int textsize;
int i;

/* Get ifconfig information */
textsize = collect(T_OUTPUT, &buf_in, "/sbin/ifconfig -l 2>/dev/null");
if (textsize < 0) {
if (logfp)
(void)fprintf(logfp,
"Aborting: Could not run ifconfig.\n");
(void)fprintf(stderr, "Could not run ifconfig.");
exit(1);
}

buf = malloc (STRSIZE * sizeof(char));
for (i = 0, buf_tmp = buf_in; i < MAX_NETS && strlen(buf_tmp) > 0
&& buf_tmp < buf_in + strlen(buf_in);) {
tmp = stpncpy(buf, buf_tmp, strcspn(buf_tmp," \n"));
*tmp='\0';
buf_tmp += (strcspn(buf_tmp, " \n") + 1) * sizeof(char);

/* Skip ignored interfaces */
for (ignore = ignored_if_names; *ignore != NULL; ignore++) {
size_t len = strlen(*ignore);
if (strncmp(buf, *ignore, len) == 0 &&
isdigit((unsigned char)buf[len]))
break;
}
if (*ignore != NULL)
continue;

strlcpy (devs[i].if_dev, buf, STRSIZE);
i++;
}
if (i < MAX_NETS)
devs[i].if_dev[0] = 0; /* XXX ? */

free(buf);
free(buf_in);
return i;
}

static int
do_ifreq(struct ifreq *ifr, unsigned long cmd, void *data)
{
int sock;
int rval;

sock = socket(PF_INET, SOCK_DGRAM, 0);
if (sock == -1)
return -1;

memset(ifr, 0, sizeof *ifr);
ifr->ifr_data = data;
strlcpy(ifr->ifr_name, net_dev, sizeof ifr->ifr_name);
rval = ioctl(sock, cmd, ifr);
close(sock);

return rval;
}

static int
do_ifmreq(struct ifmediareq *ifmr, unsigned long cmd)
{
int sock;
int rval;

sock = socket(PF_INET, SOCK_DGRAM, 0);
if (sock == -1)
return -1;

memset(ifmr, 0, sizeof *ifmr);
strlcpy(ifmr->ifm_name, net_dev, sizeof ifmr->ifm_name);
rval = ioctl(sock, cmd, ifmr);
close(sock);

return rval;
}

/* Fill in defaults network values for the selected interface */
static void
get_ifinterface_info(void)
{
struct ifreq ifr;
struct ifmediareq ifmr;
struct sockaddr_in *sa_in = (void*)&ifr.ifr_addr;
int modew;
const char *media_opt;
const char *sep;

if (do_ifreq(&ifr, SIOCGIFADDR, NULL) == 0 &&
sa_in->sin_addr.s_addr != 0)
strlcpy(net_ip, inet_ntoa(sa_in->sin_addr), sizeof net_ip);

if (do_ifreq(&ifr, SIOCGIFNETMASK, NULL) == 0 &&
sa_in->sin_addr.s_addr != 0)
strlcpy(net_mask, inet_ntoa(sa_in->sin_addr), sizeof net_mask);

if (do_ifmreq(&ifmr, SIOCGIFMEDIA) == 0) {
/* Get the name of the media word */
modew = ifmr.ifm_current;
strlcpy(net_media, get_media_subtype_string(modew),
sizeof net_media);
/* and add any media options */
sep = " mediaopt ";
while ((media_opt = get_media_option_string(&modew)) != NULL) {
strlcat(net_media, sep, sizeof net_media);
strlcat(net_media, media_opt, sizeof net_media);
sep = ",";
}
}
}

#ifndef INET6
#define get_if6interface_info()
#else
static void
get_if6interface_info(void)
{
char *textbuf, *t;
int textsize;

textsize = collect(T_OUTPUT, &textbuf,
"/sbin/ifconfig %s inet6 2>/dev/null", net_dev);
if (textsize >= 0) {
char *p;

(void)strtok(textbuf, "\n"); /* ignore first line */
while ((t = strtok(NULL, "\n")) != NULL) {
if (strncmp(t, "\tinet6 ", 7) != 0)
continue;
t += 7;
if (strstr(t, "tentative") || strstr(t, "duplicated"))
continue;
if (strncmp(t, "fe80:", 5) == 0)
continue;

p = t;
while (*p && *p != ' ' && *p != '\n')
p++;
*p = '\0';
strlcpy(net_ip6, t, sizeof(net_ip6));
break;
}
}
free(textbuf);
}
#endif

static void
get_host_info(void)
{
char hostname[MAXHOSTNAMELEN + 1];
char *dot;

/* Check host (and domain?) name */
if (gethostname(hostname, sizeof(hostname)) == 0 && hostname[0] != 0) {
hostname[sizeof(hostname) - 1] = 0;
/* check for a . */
dot = strchr(hostname, '.');
if (dot == NULL) {
/* if not found its just a host, punt on domain */
strlcpy(net_host, hostname, sizeof net_host);
} else {
/* split hostname into host/domain parts */
*dot++ = 0;
strlcpy(net_host, hostname, sizeof net_host);
strlcpy(net_domain, dot, sizeof net_domain);
}
}
}

/*
* recombine name parts split in get_host_info and config_network
* (common code moved here from write_etc_hosts)
*/
static char *
recombine_host_domain(void)
{
static char recombined[MAXHOSTNAMELEN + 1];
int l = strlen(net_host) - strlen(net_domain);

strlcpy(recombined, net_host, sizeof(recombined));

if (strlen(net_domain) != 0 && (l <= 0 ||
net_host[l - 1] != '.' ||
strcasecmp(net_domain, net_host + l) != 0)) {
/* net_host isn't an FQDN. */
strlcat(recombined, ".", sizeof(recombined));
strlcat(recombined, net_domain, sizeof(recombined));
}
return recombined;
}

#ifdef INET6
static int
is_v6kernel(void)
{
int s;

s = socket(PF_INET6, SOCK_DGRAM, 0);
if (s < 0)
return 0;
close(s);
return 1;
}
#endif

static int
handle_license(const char *dev)
{
static struct {
const char *dev;
const char *lic;
} licdev[] = {
{ "iwi", "/libdata/firmware/if_iwi/LICENSE.ipw2200-fw" },
{ "ipw", "/libdata/firmware/if_ipw/LICENSE" },
};

size_t i;

for (i = 0; i < __arraycount(licdev); i++)
if (strncmp(dev, licdev[i].dev, 3) == 0) {
char buf[64];
int val;
size_t len = sizeof(int);
(void)snprintf(buf, sizeof(buf), "hw.%s.accept_eula",
licdev[i].dev);
if (sysctlbyname(buf, &val, &len, NULL, 0) != -1
&& val != 0)
return 1;
msg_fmt_display(MSG_license, "%s%s",
dev, licdev[i].lic);
if (ask_yesno(NULL)) {
val = 1;
if (sysctlbyname(buf, NULL, NULL, &val,
0) == -1)
return 0;
add_sysctl_conf("%s=1", buf);
return 1;
} else
return 0;
}
return 1;
}

/*
* Get the information to configure the network, configure it and
* make sure both the gateway and the name server are up.
*/
int
config_network(int force)
{
char *textbuf;
int octet0;
int dhcp_config;
int nfs_root = 0;
int slip = 0;
int pid, status;
char **ap, *slcmd[10], *in_buf;
char buffer[STRSIZE];
char hostname[MAXHOSTNAMELEN + 1];
struct statvfs sb;
struct net_desc net_devs[MAX_NETS];
menu_ent *net_menu;
int menu_no;
int num_devs;
int selected_net;
int i;
#ifdef INET6
int v6config = 1, rv;
#endif

FILE *f;
time_t now;

if (network_up)
return (1);

num_devs = get_ifconfig_info(net_devs);

if (num_devs < 1) {
/* No network interfaces found! */
hit_enter_to_continue(NULL, MSG_nonet);
return -1;
}

if (!force && (have_working_ipv4() || have_working_ipv6())) {
if (ask_yesno(MSG_network_ok)) {
network_up = 1;
return 1;
}
}

net_menu = calloc(num_devs, sizeof(*net_menu));
if (net_menu == NULL) {
err_msg_win(err_outofmem);
return -1;
}

for (i = 0; i < num_devs; i++) {
net_menu[i].opt_name = net_devs[i].if_dev;
net_menu[i].opt_flags = OPT_EXIT;
net_menu[i].opt_action = set_menu_select;
}

menu_no = new_menu(MSG_netdevs,
net_menu, num_devs, -1, 4, 0, 0,
MC_SCROLL,
NULL, NULL, NULL, NULL, MSG_cancel);
again:
selected_net = -1;
msg_display(MSG_asknetdev);
process_menu(menu_no, &selected_net);
msg_clear();

if (selected_net == -1) {
free_menu(menu_no);
free(net_menu);
return 0;
}

network_up = 1;
dhcp_config = 0;

strlcpy(net_dev, net_devs[selected_net].if_dev, sizeof net_dev);

if (!handle_license(net_dev))
goto done;

slip = net_dev[0] == 's' && net_dev[1] == 'l' &&
isdigit((unsigned char)net_dev[2]);

/* If root is on NFS do not reconfigure the interface. */
if (statvfs("/", &sb) == 0 && strcmp(sb.f_fstypename, "nfs") == 0) {
nfs_root = 1;
get_ifinterface_info();
get_if6interface_info();
get_host_info();
} else if (!slip) {
/* Preload any defaults we can find */
get_ifinterface_info();
get_if6interface_info();
get_host_info();

/* domain and host */
msg_display(MSG_netinfo);

if (!config_wlan(net_dev)) {
config_eth_medium(net_dev);
}

net_dhcpconf = 0;
/* try a dhcp configuration */
dhcp_config = config_dhcp(net_dev);
if (dhcp_config) {
char *nline;

/* Get newly configured data off interface. */
get_ifinterface_info();
get_if6interface_info();
get_host_info();

net_dhcpconf |= DHCPCONF_IPADDR;

/*
* Extract default route from output of
* 'route -n show'
*/
if (collect(T_OUTPUT, &textbuf,
"/sbin/route -n show | "
"while read dest gateway flags;"
" do [ \"$dest\" = default ] && {"
" echo \"$gateway\"; break; };"
" done" ) > 0)
strlcpy(net_defroute, textbuf,
sizeof net_defroute);
free(textbuf);
if ((nline = strchr(net_defroute, '\n')))
*nline = '\0';

/* pull nameserver info out of /etc/resolv.conf */
if (collect(T_OUTPUT, &textbuf,
"cat /etc/resolv.conf 2>/dev/null |"
" while read keyword address rest;"
" do [ \"$keyword\" = nameserver ] &&"
" { echo \"$address\"; break; };"
" done" ) > 0)
strlcpy(net_namesvr, textbuf,
sizeof net_namesvr);
free(textbuf);
if ((nline = strchr(net_namesvr, '\n')))
*nline = '\0';
if (net_namesvr[0] != '\0')
net_dhcpconf |= DHCPCONF_NAMESVR;

/* pull domain info out of /etc/resolv.conf */
if (collect(T_OUTPUT, &textbuf,
"cat /etc/resolv.conf 2>/dev/null |"
" while read keyword domain rest;"
" do [ \"$keyword\" = domain ] &&"
" { echo \"$domain\"; break; };"
" done" ) > 0)
strlcpy(net_domain, textbuf,
sizeof net_domain);
free(textbuf);
if (net_domain[0] == '\0') {
/* pull domain info out of /etc/resolv.conf */
if (collect(T_OUTPUT, &textbuf,
"cat /etc/resolv.conf 2>/dev/null |"
" while read keyword search rest;"
" do [ \"$keyword\" = search ] &&"
" { echo \"$search\"; break; };"
" done" ) > 0)
strlcpy(net_domain, textbuf,
sizeof net_domain);
free(textbuf);
}
if ((nline = strchr(net_domain, '\n')))
*nline = '\0';
if (net_domain[0] != '\0')
net_dhcpconf |= DHCPCONF_DOMAIN;

if (gethostname(net_host, sizeof(net_host)) == 0 &&
net_host[0] != 0)
net_dhcpconf |= DHCPCONF_HOST;
}
}

/*
* Prompt for hostname and domain, even when using DHCP. The names
* discovered on the network may not match the desired values
* for the target system.
*/
strlcpy(hostname, recombine_host_domain(), MAXHOSTNAMELEN);
msg_prompt_add(MSG_net_host, net_host, net_host,
sizeof net_host);
msg_prompt_add(MSG_net_domain, net_domain, net_domain,
sizeof net_domain);
if (strcmp(hostname, recombine_host_domain()) != 0) {
net_dhcpconf &= ~(DHCPCONF_DOMAIN|DHCPCONF_HOST);
}

if (!dhcp_config) {
/* Manually configure IPv4 */
if (!nfs_root)
msg_prompt_add(MSG_net_ip, net_ip, net_ip,
sizeof net_ip);
if (slip)
msg_prompt_add(MSG_net_srv_ip, net_srv_ip, net_srv_ip,
sizeof net_srv_ip);
else if (!nfs_root) {
/* We don't want netmasks for SLIP */
octet0 = atoi(net_ip);
if (!net_mask[0]) {
if (0 <= octet0 && octet0 <= 127)
strlcpy(net_mask, "0xff000000",
sizeof(net_mask));
else if (128 <= octet0 && octet0 <= 191)
strlcpy(net_mask, "0xffff0000",
sizeof(net_mask));
else if (192 <= octet0 && octet0 <= 223)
strlcpy(net_mask, "0xffffff00",
sizeof(net_mask));
}
msg_prompt_add(MSG_net_mask, net_mask, net_mask,
sizeof net_mask);
}
msg_prompt_add(MSG_net_defroute, net_defroute, net_defroute,
sizeof net_defroute);
}

if (!(net_dhcpconf & DHCPCONF_NAMESVR)) {
#ifdef INET6
if (v6config) {
rv = 0;
process_menu(MENU_namesrv6, &rv);
if (!rv)
msg_prompt_add(MSG_net_namesrv, net_namesvr,
net_namesvr, sizeof net_namesvr);
} else
#endif
msg_prompt_add(MSG_net_namesrv, net_namesvr, net_namesvr,
sizeof net_namesvr);
}

/* confirm the setting */
msg_clear();
if (slip)
msg_fmt_table_add(MSG_netok_slip, "%s%s%s%s%s%s%s%s%s",
net_domain,
net_host,
*net_namesvr == '\0' ? "<none>" : net_namesvr,
net_dev,
*net_media == '\0' ? "<default>" : net_media,
*net_ip == '\0' ? "<none>" : net_ip,
*net_srv_ip == '\0' ? "<none>" : net_srv_ip,
*net_mask == '\0' ? "<none>" : net_mask,
*net_defroute == '\0' ? "<none>" : net_defroute);
else
msg_fmt_table_add(MSG_netok, "%s%s%s%s%s%s%s%s",
net_domain,
net_host,
*net_namesvr == '\0' ? "<none>" : net_namesvr,
net_dev,
*net_media == '\0' ? "<default>" : net_media,
*net_ip == '\0' ? "<none>" : net_ip,
*net_mask == '\0' ? "<none>" : net_mask,
*net_defroute == '\0' ? "<none>" : net_defroute);
#ifdef INET6
msg_fmt_table_add(MSG_netokv6, "%s",
!is_v6kernel() ? "<not supported>" : net_ip6);
#endif
done:
if (!ask_yesno(MSG_netok_ok))
goto again;

free_menu(menu_no);
free(net_menu);

run_program(0, "/sbin/ifconfig lo0 127.0.0.1");

/* dhcpcd will have configured it all for us */
if (dhcp_config) {
fflush(NULL);
network_up = 1;
return network_up;
}

/*
* we may want to perform checks against inconsistent configuration,
* like IPv4 DNS server without IPv4 configuration.
*/

/* Create /etc/resolv.conf if a nameserver was given */
if (net_namesvr[0] != '\0') {
f = fopen("/etc/resolv.conf", "w");
if (f == NULL) {
if (logfp)
(void)fprintf(logfp,
"%s", msg_string(MSG_resolv));
(void)fprintf(stderr, "%s", msg_string(MSG_resolv));
exit(1);
}
scripting_fprintf(NULL, "cat <<EOF >/etc/resolv.conf\n");
time(&now);
scripting_fprintf(f, ";\n; BIND data file\n; %s %s;\n",
"Created by NetBSD sysinst on", safectime(&now));
if (net_domain[0] != '\0')
scripting_fprintf(f, "search %s\n", net_domain);
if (net_namesvr[0] != '\0')
scripting_fprintf(f, "nameserver %s\n", net_namesvr);
scripting_fprintf(NULL, "EOF\n");
fflush(NULL);
fclose(f);
}

if (net_ip[0] != '\0') {
if (slip) {
/* XXX: needs 'ifconfig sl0 create' much earlier */
/* Set SLIP interface UP */
run_program(0, "/sbin/ifconfig %s inet %s %s up",
net_dev, net_ip, net_srv_ip);
strcpy(sl_flags, "-s 115200 -l /dev/tty00");
msg_prompt_win(MSG_slattach, -1, 12, 70, 0,
sl_flags, sl_flags, sizeof sl_flags);

/* XXX: wtf isn't run_program() used here? */
pid = fork();
if (pid == 0) {
strcpy(buffer, "/sbin/slattach ");
strcat(buffer, sl_flags);
in_buf = buffer;

for (ap = slcmd; (*ap = strsep(&in_buf, " ")) != NULL;)
if (**ap != '\0')
++ap;

execvp(slcmd[0], slcmd);
} else
wait4(pid, &status, WNOHANG, 0);
} else if (!nfs_root) {
if (net_mask[0] != '\0') {
run_program(0, "/sbin/ifconfig %s inet %s netmask %s",
net_dev, net_ip, net_mask);
} else {
run_program(0, "/sbin/ifconfig %s inet %s",
net_dev, net_ip);
}
}
}

/* Set host name */
if (net_host[0] != '\0')
sethostname(net_host, strlen(net_host));

/* Set a default route if one was given */
if (!nfs_root && net_defroute[0] != '\0') {
run_program(RUN_DISPLAY | RUN_PROGRESS,
"/sbin/route -n flush -inet");
run_program(RUN_DISPLAY | RUN_PROGRESS,
"/sbin/route -n add default %s", net_defroute);
}

/*
* wait for addresses to become valid
*/
if (!nfs_root) {
msg_display_add(MSG_wait_network);
network_up = !run_program(RUN_DISPLAY | RUN_PROGRESS,
"/sbin/ifconfig -w 15 -W 5");
} else {
/* Assume network is up. */
network_up = 1;
}

fflush(NULL);

return network_up;
}

const char *
url_proto(unsigned int xfer)
{
switch (xfer) {
case XFER_FTP: return "ftp";
case XFER_HTTP: return "http";
case XFER_HTTPS: return "https";
}

return "";
}

void
make_url(char *urlbuffer, struct ftpinfo *f, const char *dir)
{
char ftp_user_encoded[STRSIZE];
char ftp_dir_encoded[STRSIZE];
char *cp;
const char *dir2;

/*
* f->pass is quite likely to contain unsafe characters
* that need to be encoded in the URL (for example,
* "@", ":" and "/" need quoting). Let's be
* paranoid and also encode f->user and f->dir. (For
* example, f->dir could easily contain '~', which is
* unsafe by a strict reading of RFC 1738).
*/
if (strcmp("ftp", f->user) == 0 && f->pass[0] == 0) {
ftp_user_encoded[0] = 0;
} else {
cp = url_encode(ftp_user_encoded, f->user,
ftp_user_encoded + sizeof ftp_user_encoded - 1,
RFC1738_SAFE_LESS_SHELL, 0);
*cp++ = ':';
cp = url_encode(cp, f->pass,
ftp_user_encoded + sizeof ftp_user_encoded - 1,
NULL, 0);
*cp++ = '@';
*cp = 0;
}
cp = url_encode(ftp_dir_encoded, f->dir,
ftp_dir_encoded + sizeof ftp_dir_encoded - 1,
RFC1738_SAFE_LESS_SHELL_PLUS_SLASH, 1);
if (cp != ftp_dir_encoded && cp[-1] != '/')
*cp++ = '/';

dir2 = dir;
while (*dir2 == '/')
++dir2;

url_encode(cp, dir2,
ftp_dir_encoded + sizeof ftp_dir_encoded,
RFC1738_SAFE_LESS_SHELL_PLUS_SLASH, 0);

snprintf(urlbuffer, STRSIZE, "%s://%s%s/%s", url_proto(f->xfer),
ftp_user_encoded, f->xfer_host[XFER_HOST(f->xfer)],
ftp_dir_encoded);
}

/* ftp_fetch() and pkgsrc_fetch() are essentially the same, with a different
* ftpinfo var and pkgsrc always using .tgz suffix, while for
* regular sets we only use .tgz for source sets on some architectures. */
static int do_ftp_fetch(const char *, bool, struct ftpinfo *);

static int
ftp_fetch(const char *set_name)
{
return do_ftp_fetch(set_name, use_tgz_for_set(set_name), &ftp);
}

static int
pkgsrc_fetch(const char *set_name)
{
return do_ftp_fetch(set_name, true, &pkgsrc);
}

static int
do_ftp_fetch(const char *set_name, bool force_tgz, struct ftpinfo *f)
{
const char *ftp_opt;
char url[STRSIZE];
int rval;

/*
* Invoke ftp to fetch the file.
*/
if (strcmp("ftp", f->user) == 0 && f->pass[0] == 0) {
/* do anon ftp */
ftp_opt = "-a ";
} else {
ftp_opt = "";
}

make_url(url, f, set_dir_for_set(set_name));
rval = run_program(RUN_DISPLAY | RUN_PROGRESS | RUN_XFER_DIR,
"/usr/bin/ftp %s%s/%s%s",
ftp_opt, url, set_name,
force_tgz ? dist_tgz_postfix : dist_postfix);

return rval ? SET_RETRY : SET_OK;
}

// XXX: check MSG_netnotup_continueanyway and MSG_netnotup

int
get_pkgsrc(void)
{
int rv = -1;

process_menu(MENU_pkgsrc, &rv);

if (rv == SET_SKIP)
return SET_SKIP;

fetch_fn = pkgsrc_fetch;
snprintf(ext_dir_pkgsrc, sizeof ext_dir_pkgsrc, "%s/%s",
target_prefix(), xfer_dir + (*xfer_dir == '/'));

return SET_OK;
}

int
get_via_ftp(unsigned int xfer)
{
arg_rv arg;

if (!network_up)
config_network(0);

arg.rv = -1;
arg.arg = (void*)(uintptr_t)(xfer);
process_menu(MENU_ftpsource, &arg);

if (arg.rv == SET_RETRY)
return SET_RETRY;

/* We'll fetch each file just before installing it */
fetch_fn = ftp_fetch;
ftp.xfer = xfer;
snprintf(ext_dir_bin, sizeof ext_dir_bin, "%s/%s", target_prefix(),
xfer_dir + (*xfer_dir == '/'));
snprintf(ext_dir_src, sizeof ext_dir_src, "%s/%s", target_prefix(),
xfer_dir + (*xfer_dir == '/'));

return SET_OK;
}

int
get_via_nfs(void)
{
struct statvfs sb;
int rv;

/* If root is on NFS and we have sets, skip this step. */
if (statvfs(set_dir_bin, &sb) == 0 &&
strcmp(sb.f_fstypename, "nfs") == 0) {
strlcpy(ext_dir_bin, set_dir_bin, sizeof ext_dir_bin);
strlcpy(ext_dir_src, set_dir_src, sizeof ext_dir_src);
return SET_OK;
}

/* Get server and filepath */
rv = -1;
process_menu(MENU_nfssource, &rv);

if (rv == SET_RETRY)
return SET_RETRY;

/* Mount it */
if (run_program(0, "/sbin/mount -r -o -2,-i,-r=1024 -t nfs %s:%s /mnt2",
nfs_host, nfs_dir))
return SET_RETRY;

mnt2_mounted = 1;

snprintf(ext_dir_bin, sizeof ext_dir_bin, "/mnt2/%s", set_dir_bin);
snprintf(ext_dir_src, sizeof ext_dir_src, "/mnt2/%s", set_dir_src);

/* return location, don't clean... */
return SET_OK;
}

/*
* write the new contents of /etc/hosts to the specified file
*/
static void
write_etc_hosts(FILE *f)
{
scripting_fprintf(f, "#\n");
scripting_fprintf(f, "# Added by NetBSD sysinst\n");
scripting_fprintf(f, "#\n");

if (net_domain[0] != '\0')
scripting_fprintf(f, "127.0.0.1 localhost.%s\n", net_domain);

scripting_fprintf(f, "%s\t", net_ip);
if (net_domain[0] != '\0')
scripting_fprintf(f, "%s ", recombine_host_domain());
scripting_fprintf(f, "%s\n", net_host);
}

/*
* Write the network config info the user entered via menus into the
* config files in the target disk. Be careful not to lose any
* information we don't immediately add back, in case the install
* target is the currently-active root.
*/
void
mnt_net_config(void)
{
char ifconfig_fn[STRSIZE];
FILE *ifconf = NULL;

if (!network_up)
return;
if (!ask_yesno(MSG_mntnetconfig))
return;

/* Write hostname to /etc/rc.conf */
if ((net_dhcpconf & DHCPCONF_HOST) == 0)
if (del_rc_conf("hostname") == 0)
add_rc_conf("hostname=%s\n", recombine_host_domain());

/* Copy resolv.conf to target. If DHCP was used to create it,
* it will be replaced on next boot anyway. */
if (net_namesvr[0] != '\0')
dup_file_into_target("/etc/resolv.conf");

/* Copy wpa_supplicant.conf to target. */
if (net_ssid[0] != '\0')
dup_file_into_target("/etc/wpa_supplicant.conf");

/*
* bring the interface up, it will be necessary for IPv6, and
* it won't make trouble with IPv4 case either
*/
snprintf(ifconfig_fn, sizeof ifconfig_fn, "/etc/ifconfig.%s", net_dev);
ifconf = target_fopen(ifconfig_fn, "w");
if (ifconf != NULL) {
scripting_fprintf(NULL, "cat <<EOF >>%s%s\n",
target_prefix(), ifconfig_fn);
scripting_fprintf(ifconf, "up\n");
if (*net_media != '\0')
scripting_fprintf(ifconf, "media %s\n", net_media);
scripting_fprintf(NULL, "EOF\n");
}

if ((net_dhcpconf & DHCPCONF_IPADDR) == 0) {
FILE *hosts;

/* Write IPaddr and netmask to /etc/ifconfig.if[0-9] */
if (ifconf != NULL) {
scripting_fprintf(NULL, "cat <<EOF >>%s%s\n",
target_prefix(), ifconfig_fn);
if (*net_media != '\0')
scripting_fprintf(ifconf,
"%s netmask %s media %s\n",
net_ip, net_mask, net_media);
else
scripting_fprintf(ifconf, "%s netmask %s\n",
net_ip, net_mask);
scripting_fprintf(NULL, "EOF\n");
}

/*
* Add IPaddr/hostname to /etc/hosts.
* Be careful not to clobber any existing contents.
* Relies on ordered search of /etc/hosts. XXX YP?
*/
hosts = target_fopen("/etc/hosts", "a");
if (hosts != 0) {
scripting_fprintf(NULL, "cat <<EOF >>%s/etc/hosts\n",
target_prefix());
write_etc_hosts(hosts);
(void)fclose(hosts);
scripting_fprintf(NULL, "EOF\n");
}

if (del_rc_conf("defaultroute") == 0)
add_rc_conf("defaultroute=\"%s\"\n", net_defroute);
} else {
/*
* Start dhcpcd quietly and in master mode, but restrict
* it to our interface
*/
add_rc_conf("dhcpcd=YES\n");
add_rc_conf("dhcpcd_flags=\"-qM %s\"\n", net_dev);
}

if (net_ssid[0] != '\0') {
add_rc_conf("wpa_supplicant=YES\n");
add_rc_conf("wpa_supplicant_flags=\"-B -s -i %s -D bsd -c /etc/wpa_supplicant.conf\"\n", net_dev);
}

if (ifconf)
fclose(ifconf);

fflush(NULL);
}

int
config_wlan(char *inter)
{
FILE *wpa_conf = NULL;
char wpa_cmd[256];
struct ifreq ifr = {0};
struct ieee80211_nwid nwid = {0};

/* skip non-WLAN devices */
if (do_ifreq(&ifr, SIOCG80211NWID, &nwid) == -1)
return 0;

if (!file_mode_match(WPA_SUPPLICANT, S_IFREG))
return 0;

msg_prompt_add(MSG_net_ssid, net_ssid, net_ssid,
sizeof net_ssid);
if (net_ssid[0] == '\0')
return 0;

msg_prompt_noecho(MSG_net_passphrase, net_passphrase, net_passphrase,
sizeof net_passphrase);

wpa_conf = fopen("/etc/wpa_supplicant.conf", "a");
if (wpa_conf == NULL)
return 0;

scripting_fprintf(NULL,
"cat <<EOF >>%s/etc/wpa_supplicant.conf\n",
target_prefix());
scripting_fprintf(wpa_conf, "\n#\n");
scripting_fprintf(wpa_conf, "# Added by NetBSD sysinst\n");
scripting_fprintf(wpa_conf, "#\n");
scripting_fprintf(wpa_conf, "network={\n");
scripting_fprintf(wpa_conf,
"\tssid=\"%s\"\n", net_ssid);
if (net_passphrase[0] != '\0') {
scripting_fprintf(wpa_conf, "\tpsk=\"%s\"\n",
net_passphrase);
} else {
scripting_fprintf(wpa_conf, "\tkey_mgmt=NONE\n");
}
scripting_fprintf(wpa_conf, "\tscan_ssid=1\n");
scripting_fprintf(wpa_conf, "}\n");
(void)fclose(wpa_conf);
scripting_fprintf(NULL, "EOF\n");

if (run_program(RUN_DISPLAY | RUN_PROGRESS,
"/sbin/ifconfig %s up", inter) != 0)
return 0;

/*
* have to use system() here to avoid the server process dying
*/
if (snprintf(wpa_cmd, sizeof(wpa_cmd),
WPA_SUPPLICANT
" -B -s -i %s -D bsd -c /etc/wpa_supplicant.conf", inter) < 0)
return 0;
(void)do_system(wpa_cmd);

return 1;
}

int
config_dhcp(char *inter)
{
int dhcpautoconf;

/*
* Don't bother checking for an existing instance of dhcpcd, just
* ask it to renew the lease. It will fork and daemonize if there
* wasn't already an instance.
*/

if (!file_mode_match(DHCPCD, S_IFREG))
return 0;
if (ask_yesno(MSG_Perform_autoconfiguration)) {
/* spawn off dhcpcd and wait for parent to exit */
dhcpautoconf = run_program(RUN_DISPLAY | RUN_PROGRESS,
"%s -d -n %s", DHCPCD, inter);
return dhcpautoconf ? 0 : 1;
}
return 0;
}

int
config_eth_medium(char *inter)
{
char *textbuf = NULL;

for (;;) {
msg_prompt_add(MSG_net_media, net_media, net_media,
sizeof net_media);

/*
* ifconfig does not allow media specifiers on
* IFM_MANUAL interfaces. Our UI gives no way
* to set an option back
* to null-string if it gets accidentally set.
* Check for plausible alternatives.
*/
if (strcmp(net_media, "<default>") == 0 ||
strcmp(net_media, "default") == 0 ||
strcmp(net_media, "<manual>") == 0 ||
strcmp(net_media, "manual") == 0 ||
strcmp(net_media, "<none>") == 0 ||
strcmp(net_media, "none") == 0 ||
strcmp(net_media, " ") == 0) {
*net_media = '\0';
}

if (*net_media == '\0')
break;
/*
* We must set the media type here - to give dhcp
* a chance
*/
if (run_program(0, "/sbin/ifconfig %s media %s",
net_dev, net_media) == 0)
break;
/* Failed to set - output the supported values */
if (collect(T_OUTPUT, &textbuf, "/sbin/ifconfig -m %s |"
"while IFS=; read line;"
" do [ \"$line\" = \"${line#*media}\" ] || "
"echo $line;"
" done", net_dev ) > 0)
msg_display(textbuf);
free(textbuf);
}
return 0;
}