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quakeforge/qw/source/cl_slist.c
Bill Currie 12c84046f3 [cvar] Make cvars properly typed 
This is an extremely extensive patch as it hits every cvar, and every
usage of the cvars. Cvars no longer store the value they control,
instead, they use a cexpr value object to reference the value and
specify the value's type (currently, a null type is used for strings).
Non-string cvars are passed through cexpr, allowing expressions in the
cvars' settings. Also, cvars have returned to an enhanced version of the
original (id quake) registration scheme.

As a minor benefit, relevant code having direct access to the
cvar-controlled variables is probably a slight optimization as it
removed a pointer dereference, and the variables can be located for data
locality.

The static cvar descriptors are made private as an additional safety
layer, though there's nothing stopping external modification via
Cvar_FindVar (which is needed for adding listeners).

While not used yet (partly due to working out the design), cvars can
have a validation function.

Registering a cvar allows a primary listener (and its data) to be
specified: it will always be called first when the cvar is modified. The
combination of proper listeners and direct access to the controlled
variable greatly simplifies the more complex cvar interactions as much
less null checking is required, and there's no need for one cvar's
callback to call another's.

nq-x11 is known to work at least well enough for the demos. More testing
will come.
2022-04-24 19:15:22 +09:00

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/*
cl_slist.c
serverlist addressbook
Copyright (C) 2000 Brian Koropoff <brian.hk@home.com>
Copyright (C) 2001 Chris Ison <ceison@yahoo.com>
Author: Brian Koropoff
Date: 03 May 2000
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
# define model_t sun_model_t
# include <netinet/in.h>
# undef model_t
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_WINDOWS_H
# include "winquake.h"
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#include <ctype.h>
#include <stdlib.h>
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/dstring.h"
#include "QF/quakeio.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "qw/bothdefs.h"
#include "qw/include/cl_main.h"
#include "qw/include/cl_slist.h"
#include "qw/include/client.h"
typedef struct server_entry_s {
char *server;
char *desc;
info_t *status;
int waitstatus;
double pingsent;
double pongback;
struct server_entry_s *next;
struct server_entry_s *prev;
} server_entry_t;
server_entry_t *slist;
server_entry_t *all_slist;
server_entry_t *fav_slist;
int which_slist;
int slist_last_details;
int sl_sortby;
static cvar_t sl_sortby_cvar = {
.name = "sl_sortby",
.description =
"0 = sort by name, 1 = sort by ping",
.default_value = "0",
.flags = CVAR_ARCHIVE,
.value = { .type = &cexpr_int, .value = &sl_sortby },
};
int sl_filter;
static cvar_t sl_filter_cvar = {
.name = "sl_filter",
.description =
"enable server filter",
.default_value = "0",
.flags = CVAR_NONE,
.value = { .type = &cexpr_int, .value = &sl_filter },
};
char *sl_game;
static cvar_t sl_game_cvar = {
.name = "sl_game",
.description =
"sets the serverlist game filter",
.default_value = "",
.flags = CVAR_ARCHIVE,
.value = { .type = 0, .value = &sl_game },
};
int sl_ping;
static cvar_t sl_ping_cvar = {
.name = "sl_ping",
.description =
"sets the serverlist ping filter",
.default_value = "",
.flags = CVAR_ARCHIVE,
.value = { .type = &cexpr_int, .value = &sl_ping },
};
static void
S_Refresh (server_entry_t *slrefresh)
{
netadr_t addy;
char data_ping[] = "\377\377\377\377k";
char data_status[] = "\377\377\377\377status";
NET_StringToAdr (slrefresh->server, &addy);
if (!addy.port)
addy.port = ntohs (27500);
slrefresh->pingsent = Sys_DoubleTime ();
slrefresh->pongback = 0;
Netchan_SendPacket (6, data_ping, addy);
Netchan_SendPacket (11, data_status, addy);
slrefresh->waitstatus = 1;
}
static server_entry_t *
SL_Add (server_entry_t *start, const char *ip, const char *desc)
{
server_entry_t *p;
if (!start) { // Nothing at beginning of list,
// create it
start = calloc (1, sizeof (server_entry_t));
start->prev = 0;
start->next = 0;
start->server = malloc (strlen (ip) + 1);
start->desc = malloc (strlen (desc ? desc : ip) + 1);
SYS_CHECKMEM (start->server && start->desc);
strcpy (start->server, ip);
strcpy (start->desc, desc ? desc : ip);
start->status = NULL;
return (start);
}
for (p = start; p->next; p = p->next) //Get to end of list
if (strcmp (ip, p->server) == 0) //don't add duplicate
return (start);
p->next = calloc (1, sizeof (server_entry_t));
p->next->prev = p;
p->next->server = malloc (strlen (ip) + 1);
p->next->desc = malloc (strlen (desc ? desc : ip) + 1);
SYS_CHECKMEM (p->next->server && p->next->desc);
strcpy (p->next->server, ip);
strcpy (p->next->desc, desc ? desc : ip);
p->status = NULL;
return (start);
}
/*
static server_entry_t *
SL_Del (server_entry_t *start, server_entry_t *del)
{
server_entry_t *n;
if (del == start) {
free (start->server);
free (start->desc);
n = start->next;
if (n)
n->prev = 0;
free (start);
return (n);
}
free (del->server);
free (del->desc);
if (del->status)
free (del->status);
if (del->prev)
del->prev->next = del->next;
if (del->next)
del->next->prev = del->prev;
free (del);
return (start);
}
static server_entry_t *
SL_InsB (server_entry_t *start, server_entry_t *place, char *ip, char *desc)
{
server_entry_t *new, *other;
new = calloc (1, sizeof (server_entry_t));
new->server = malloc (strlen (ip) + 1);
new->desc = malloc (strlen (desc) + 1);
SYS_CHECKMEM (new->server && new->desc);
strcpy (new->server, ip);
strcpy (new->desc, desc);
other = place->prev;
if (other)
other->next = new;
place->prev = new;
new->next = place;
new->prev = other;
if (!other)
return new;
return start;
}
*/
static void
SL_Swap (server_entry_t *swap1, server_entry_t *swap2)
{
server_entry_t *next1, *next2, *prev1, *prev2;
server_entry_t temp;
next1 = swap1->next;
next2 = swap2->next;
prev1 = swap1->prev;
prev2 = swap2->prev;
temp = *swap1;
*swap1 = *swap2;
*swap2 = temp;
swap1->next = next1;
swap2->next = next2;
swap1->prev = prev1;
swap2->prev = prev2;
}
static int
SL_CheckFilter (server_entry_t *sl_filteritem)
{
if (!sl_filter)
return (1);
if (!sl_filteritem->status)
return (0);
if (strlen (sl_game)) {
if (strcasecmp (Info_ValueForKey (sl_filteritem->status, "*gamedir"),
sl_game) != 0)
return (0);
}
if (sl_ping) {
if (!sl_filteritem->pongback)
return (0);
if (((int) (sl_filteritem->pongback * 1000)) >= sl_ping)
return (0);
}
return (1);
}
static server_entry_t *
SL_Get_By_Num (server_entry_t *start, int n)
{
int i;
for (i = 0; i <= n; i++)
{
if (!start)
break;
if (!SL_CheckFilter (start))
i--;
if (i != n)
start = start->next;
}
if (!start)
return (0);
return (start);
}
static int
SL_Len (server_entry_t *start)
{
int i;
for (i = 0; start; i++)
start = start->next;
return i;
}
static void
SL_Del_All (server_entry_t *start)
{
server_entry_t *n;
while (start) {
n = start->next;
free (start->server);
free (start->desc);
if (start->status)
free (start->status);
free (start);
start = n;
}
}
static void
SL_SaveF (QFile *f, server_entry_t *start)
{
do {
Qprintf (f, "%s %s\n", start->server, start->desc);
start = start->next;
} while (start);
}
void
SL_Shutdown (void)
{
QFile *f;
if (fav_slist) {
if ((f = QFS_Open ("servers.txt", "w"))) {
SL_SaveF (f, fav_slist);
Qclose (f);
}
SL_Del_All (fav_slist);
}
if (all_slist)
SL_Del_All (all_slist);
}
static __attribute__((pure)) char *
gettokstart (char *str, int req, char delim)
{
char *start = str;
int tok = 1;
while (*start == delim) {
start++;
}
if (*start == '\0')
return 0;
while (tok < req) { // Stop when we get to the requested
// token
if (*++start == delim) { // Increment pointer and test
while (*start == delim) { // Get to next token
start++;
}
tok++;
}
if (*start == '\0') {
return 0;
}
}
return start;
}
static __attribute__((pure)) int
gettoklen (char *str, int req, char delim)
{
char *start = 0;
int len = 0;
start = gettokstart (str, req, delim);
if (*start == '\0') {
return 0;
}
while (*start != delim && *start != '\0') {
start++;
len++;
}
return len;
}
static void
timepassed (double time1, double *time2)
{
*time2 -= time1;
}
static void
SL_SortEntry (server_entry_t *start)
{
int i = 0;
server_entry_t *q;
if (!start || !sl_sortby)
return;
for (q = start->next; q; q = q->next) {
if (sl_sortby) {
if ((q->pongback) && (start->pongback) && (start->pongback >
q->pongback)) {
SL_Swap (start, q);
q = start;
}
} else {
i = 0;
while ((start->desc[i] != '\0') && (q->desc[i] != '\0') &&
(toupper ((byte) start->desc[i])
== toupper ((byte) q->desc[i])))
i++;
if (toupper ((byte) start->desc[i])
> toupper ((byte) q->desc[i])) {
SL_Swap (start, q);
q = start;
}
}
}
}
static void
SL_Sort (void *data, const cvar_t *cvar)
{
server_entry_t *p;
if (!slist)
return;
for (p = slist; p->next; p = p->next)
SL_SortEntry (p);
}
static void
SL_Con_List (server_entry_t *sldata)
{
int serv;
server_entry_t *cp;
SL_Sort (0, 0);
for (serv = 0; serv < SL_Len (sldata); serv++) {
cp = SL_Get_By_Num (sldata, serv);
if (!cp)
break;
Sys_Printf ("%i) %s\n", (serv + 1), cp->desc);
}
}
static void
SL_Connect (server_entry_t *sldata, int slitemno)
{
CL_Disconnect ();
dstring_copystr (cls.servername,
SL_Get_By_Num (sldata, (slitemno - 1))->server);
CL_BeginServerConnect ();
}
static void
SL_Update (server_entry_t *sldata)
{
// FIXME - Need to change this so the info is not sent in 1 burst
// as it appears to be causing the occasional problem
// with some servers
server_entry_t *cp;
cp = sldata;
while (cp)
{
S_Refresh (cp);
cp = cp->next;
}
}
static void
SL_Con_Details (server_entry_t *sldata, int slitemno)
{
unsigned int i, playercount;
server_entry_t *cp;
playercount = 0;
slist_last_details = slitemno;
cp = SL_Get_By_Num (sldata, (slitemno - 1));
if (!cp)
return;
Sys_Printf ("Server: %s\n", cp->server);
Sys_Printf ("Ping: ");
if (cp->pongback)
Sys_Printf ("%i\n", (int) (cp->pongback * 1000));
else
Sys_Printf ("N/A\n");
if (cp->status) {
char *s;
Sys_Printf ("Name: %s\n", cp->desc);
Sys_Printf ("Game: %s\n", Info_ValueForKey (cp->status, "*gamedir"));
Sys_Printf ("Map: %s\n", Info_ValueForKey (cp->status, "map"));
s = Info_MakeString (cp->status, 0);
for (i = 0; i < strlen (s); i++)
if (s[i] == '\n')
playercount++;
Sys_Printf ("Players: %i/%s\n", playercount,
Info_ValueForKey (cp->status, "maxclients"));
} else
Sys_Printf ("No Details Available\n");
}
static void
SL_MasterUpdate (void)
{
char data[] = "c\n\0";
netadr_t addy;
SL_Del_All (slist);
slist = NULL;
NET_StringToAdr ("194.251.249.32:27000", &addy);
Netchan_SendPacket (3, data, addy);
NET_StringToAdr ("qwmaster.barrysworld.com:27000", &addy);
Netchan_SendPacket (3, data, addy);
NET_StringToAdr ("192.246.40.37:27000", &addy);
Netchan_SendPacket (3, data, addy);
NET_StringToAdr ("192.246.40.37:27002", &addy);
Netchan_SendPacket (3, data, addy);
NET_StringToAdr ("192.246.40.37:27003", &addy);
Netchan_SendPacket (3, data, addy);
NET_StringToAdr ("192.246.40.37:27004", &addy);
Netchan_SendPacket (3, data, addy);
NET_StringToAdr ("192.246.40.37:27006", &addy);
Netchan_SendPacket (3, data, addy);
NET_StringToAdr ("203.9.148.7:27000", &addy);
Netchan_SendPacket (3, data, addy);
}
static int
SL_Switch (void)
{
if (!which_slist) {
fav_slist = slist;
slist = all_slist;
which_slist = 1;
} else {
all_slist = slist;
slist = fav_slist;
which_slist = 0;
}
SL_Sort (0, 0);
return (which_slist);
}
static void
SL_Command (void)
{
int sltemp = 0;
if (Cmd_Argc () == 1)
SL_Con_List (slist);
else if (strcasecmp (Cmd_Argv (1), "switch") == 0) {
if (SL_Switch ())
Sys_Printf ("Switched to Server List from Masters\n");
else
Sys_Printf ("Switched to Favorite Server List\n");
} else if (strcasecmp (Cmd_Argv (1), "refresh") == 0) {
if (Cmd_Argc () == 2)
SL_Update (slist);
else
Sys_Printf ("Syntax: slist refresh\n");
} else if (strcasecmp (Cmd_Argv (1),"update") == 0) {
if (Cmd_Argc () == 2) {
if (!which_slist)
Sys_Printf ("ERROR: This of for updating the servers from a "
"list of masters\n");
else
SL_MasterUpdate ();
} else
Sys_Printf ("Syntax: slist update\n");
} else if (strcasecmp (Cmd_Argv (1), "connect") == 0) {
if (Cmd_Argc () == 3) {
sltemp = atoi (Cmd_Argv (2));
if (sltemp && (sltemp <= SL_Len (slist)))
SL_Connect (slist, sltemp);
else
Sys_Printf ("Error: Invalid Server Number -> %s\n",
Cmd_Argv (2));
} else if ((Cmd_Argc () == 2) && slist_last_details)
SL_Connect (slist, slist_last_details);
else
Sys_Printf ("Syntax: slist connect #\n");
} else {
sltemp = atoi (Cmd_Argv (1));
if ((Cmd_Argc () == 2) && sltemp && (sltemp <= SL_Len (slist)))
SL_Con_Details (slist, sltemp);
}
}
void
MSL_ParseServerList (const char *msl_data)
{
unsigned int msl_ptr;
for (msl_ptr = 0; msl_ptr < strlen (msl_data); msl_ptr = msl_ptr + 6) {
slist = SL_Add (slist, va (0, "%i.%i.%i.%i:%i",
(byte) msl_data[msl_ptr],
(byte) msl_data[msl_ptr+1],
(byte) msl_data[msl_ptr+2],
(byte) msl_data[msl_ptr+3],
((byte) msl_data[msl_ptr + 4] << 8)
| (byte) msl_data[msl_ptr + 5]), NULL);
}
}
static server_entry_t *
SL_LoadF (QFile *f, server_entry_t *start)
{
// This could get messy
char line[256]; /* Long lines get truncated. */
char *addr, *st;
int len, i;
int c = ' '; /* int so it can be compared to EOF properly */
while (1) {
// First, get a line
i = 0;
c = ' ';
while (c != '\n' && c != EOF) {
c = Qgetc (f);
if (i < 255) {
line[i] = c;
i++;
}
}
line[i - 1] = '\0'; // Now we can parse it
if ((st = gettokstart (line, 1, ' ')) != NULL) {
len = gettoklen (line, 1, ' ');
addr = malloc (len + 1);
SYS_CHECKMEM (addr);
strncpy (addr, &line[0], len);
addr[len] = '\0';
if ((st = gettokstart (line, 2, ' '))) {
start = SL_Add (start, addr, st);
} else {
start = SL_Add (start, addr, "Unknown");
}
free (addr);
}
if (c == EOF) // We're done
return start;
}
}
void
SL_Init (void)
{
QFile *servlist;
if ((servlist = QFS_Open ("servers.txt", "r"))) {
slist = SL_LoadF (servlist, slist);
Qclose (servlist);
}
fav_slist = slist;
all_slist = NULL;
which_slist = 0;
Cmd_AddCommand ("slist", SL_Command, "console commands to access server "
"list\n");
Cvar_Register (&sl_sortby_cvar, SL_Sort, 0);
Cvar_Register (&sl_filter_cvar, 0, 0);
Cvar_Register (&sl_game_cvar, 0, 0);
Cvar_Register (&sl_ping_cvar, 0, 0);
}
int
SL_CheckStatus (const char *cs_from, const char *cs_data)
{
const char *tmp_desc;
server_entry_t *temp;
for (temp = slist; temp; temp = temp->next)
if (temp->waitstatus) {
if (strcmp (cs_from, temp->server) == 0) {
unsigned int i;
char *data = strdup (cs_data);
strcpy (data, cs_data);
for (i = 0; i < strlen (data); i++)
if (data[i] == '\n') {
data[i] = '\\';
break;
}
if (temp->status)
Info_Destroy (temp->status);
temp->status = Info_ParseString (cs_data, strlen (data), 0);
temp->waitstatus = 0;
tmp_desc = Info_ValueForKey (temp->status, "hostname");
if (tmp_desc[0] != '\0') {
temp->desc = realloc (temp->desc, strlen (tmp_desc) + 1);
strcpy (temp->desc, tmp_desc);
} else {
temp->desc = realloc (temp->desc, strlen (data) + 1);
strcpy (temp->desc, data);
}
free (data);
return (1);
}
}
return (0);
}
void
SL_CheckPing (const char *cp_from)
{
server_entry_t *temp;
for (temp = slist; temp; temp = temp->next)
if (temp->pingsent && !temp->pongback) {
if (strcmp (cp_from, temp->server)) {
temp->pongback = Sys_DoubleTime ();
timepassed (temp->pingsent, &temp->pongback);
}
}
}
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