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#undef DEBUG
#include "config.h"
#include "copyright.h"
#ifdef META
#include INC_LIMITS
#include INC_FCNTL
#include <stdio.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <stdlib.h>
#include INC_SYS_SELECT
#include INC_STRINGS
#include <sys/socket.h>
#include INC_NETINET_IN
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <signal.h>
#include "Wlib.h"
#include "defs.h"
#include "struct.h"
#include "data.h"
#include "version.h"
#include "patchlevel.h"
#include "badversion.h"
#include "defaults.h"
#include "newwin.h"
#include "parsemeta.h"
#ifdef WIN32 /* socket garbage in case the client is not running on NT */
#define read(f,b,l) recv(f,b,l,0)
#define write(f,b,l) send(f,b,l,0)
#define close(s) closesocket(s)
#endif
/* Constants */
#define BUF 6144
#define LINE 100 /* Width of a meta-server line */
#define MAXMETABYTES 2048 /* maximum metaserver UDP packet size */
static int msock = -1; /* the socket to talk to the metaservers */
static int sent = 0; /* number of solicitations sent */
static int seen = 0; /* number of replies seen */
static int verbose = 0; /* whether to talk a lot about it all */
static time_t last; /* time of last refresh */
/* Local Types */
struct servers {
char address[LINE]; /* host name or ip address of server */
int port;
int age; /* age in seconds as received */
time_t when; /* date time this record received */
int refresh; /* data needs redisplaying */
int lifetime; /* remaining cache life of entry */
int players;
int status;
char typeflag;
char comment[LINE];
pid_t pid; /* our last known child playing here */
int exitstatus; /* exit status of last known child here */
int observer; /* set if child is an observer */
};
struct servers *serverlist = NULL; /* The record for each server. */
static int num_servers = 0; /* The number of servers. */
static int chosen = -1; /* Arrow key chosen server. */
static int metaHeight = 0; /* The number of list lines. */
static char *metaWindowName; /* The window's name. */
static int statusLevel;
static W_Window metaWin, metaList, metaHelpWin = NULL;
void *logo;
/* button offsets from end of list */
#define B_ADD 4
#define B_REFRESH 3
#define B_HELP 2
#define B_QUIT 1
#define N_TITLES 1
#define N_BUTTONS 4
#define N_GAP 1
#define N_OVERHEAD N_TITLES+N_BUTTONS+N_GAP
/* The status strings: The order of the strings up until statusNull is
* important because the meta-client will display all the strings up to a
* particular point.
*
* The strings after statusNull are internal status types and are formatted
* separatly from the other strings.
*
* The string corresponding to "statusNull" is assigned to thoes servers which
* have "statusNobody" or earlier strings in old, cached, meta-server data. */
char *statusStrings[] =
{"", "Wait queue:", "-", "Timed out", "No connection",
"Active", "CANNOT CONNECT", "DEFAULT SERVER"};
enum statusTypes {
statusOpen = 0, statusWait, statusNobody, statusTout, statusNoConnect,
statusNull, statusCantConnect, statusDefault
};
static const int defaultStatLevel = statusTout;
/* Functions */
extern void terminate(int error);
char *metahelp_message[] =
{
"Netrek Server List - Help",
"",
"This is a list of Netrek servers, from the Metaserver, or on your",
"local network. You can do this:",
"",
" - click on a server to join the game there,",
"",
" - middle-click on a server to immediately join as guest,",
"",
" - right-click on a server to observe the game there,",
"",
" - click refresh to reload the list of servers,",
"",
"-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --",
"",
"Tips for new Netrek players:",
"",
" 1. when you enter the game, press the number 4 to start moving,",
" other numbers are slower or faster,",
"",
" 2. you are the white ship in the centre of the left-hand screen,",
"",
" 3. use right-click on the mouse to steer toward a point in space,",
" you will find it easier to turn at lower speeds,",
"",
" 4. use left-click on the mouse to fire a torpedo, they travel over",
" time so you have to point ahead of your target, they hurt enemy",
" ships but usually pass right through your team,",
"",
" 5. use middle-click on your mouse to fire a phaser, they are",
" instant so point at your target, but only work well close up,",
"",
" 6. the aim of the game is to capture planets, killing enemies is",
" only a means to an end, and dying is a good thing, because you get a",
" new ship,",
"",
" 7. but if someone kills you, they can begin to capture planets, so",
" it is best to not die in vain,",
"",
" 8. people in your team will try to communicate so that you can all",
" do things together, because when you cooperate better than the other",
" team, you win.",
"",
" 9. use the 'h' key to see a list of commands for your ship.",
"",
"Observing is a good way to learn. When you join as an observer, you",
"won't see much until you use 'l' (lower-case L) to lock on to a",
"player. Choose a good player and watch what they do.",
"",
"For more information on Netrek, visit http://netrek.org/beginner",
NULL
};
static void make_help()
{
int i, l, h, w;
/* calculate width and height required */
h = (sizeof(metahelp_message)/sizeof(char *));
w = 0;
for (i=0; i<h; i++) {
char *line = metahelp_message[i];
if (line == NULL) break;
l = strlen(line);
if (l > w) w = l;
}
metaHelpWin = W_MakeWindow("Netrek Server List - Help", 500, 500,
w * W_Textwidth + 40, h * W_Textheight + 40,
0, 2, foreColor);
}
static void expo_help()
{
int i, h;
h = (sizeof(metahelp_message)/sizeof(char *));
for (i=0; i<h; i++) {
char *line = metahelp_message[i];
if (line == NULL) break;
W_WriteText(metaHelpWin, 20, i * W_Textheight + 20, textColor, line, -1,
W_RegularFont);
}
}
static void show_help()
{
W_MapWindow(metaHelpWin);
}
static void hide_help()
{
W_UnmapWindow(metaHelpWin);
}
static void toggle_help()
{
if (W_IsMapped(metaHelpWin)) {
hide_help();
} else {
show_help();
}
}
static int ReadMetasSend()
{
char *metaservers; /* our copy of the metaserver host names */
char *token; /* current metaserver host name */
struct sockaddr_in address; /* the address of the metaservers */
static char *req; /* the request packet for the metaserver */
static int reqlen; /* the length of the request packet */
last = time(NULL);
/* host names of metaservers, default in data.c, comma delimited */
if ((getdefault("metaserver")) != NULL)
metaserver = getdefault("metaserver");
/* port number of metaservers, unlikely to change, not a list */
metaport = intDefault("metaport", metaport);
/* whether to report everything that happens */
verbose = booleanDefault("metaverbose", verbose);
/* create the socket */
if (msock < 0) {
msock = socket(AF_INET, SOCK_DGRAM, 0);
if (msock < 0) { perror("ReadMetasSend: socket"); return 0; }
/* bind the socket to any address */
address.sin_addr.s_addr = INADDR_ANY;
address.sin_family = AF_INET;
address.sin_port = 0;
if (bind(msock,(struct sockaddr *)&address, sizeof(address)) < 0) {
perror("ReadMetasSend: bind");
close(msock);
return 0;
}
req = malloc(80);
snprintf(req, 80, "?version=netrek-client-cow-%s.%d",
mvers, PATCHLEVEL);
reqlen = strlen(req);
}
/* send request to a multicast metaserver on local area network */
address.sin_family = AF_INET;
address.sin_port = htons(metaport);
address.sin_addr.s_addr = inet_addr("224.0.0.1");
if (verbose) fprintf(stderr,
"requesting player list from nearby servers on %s\n",
inet_ntoa(address.sin_addr));
if (sendto(msock, req, reqlen, 0, (struct sockaddr *)&address,
sizeof(address)) < 0) {
perror("ReadMetasSend: sendto");
} else {
sent++;
}
/* try each of the comma delimited metaserver host names */
metaservers = strdup(metaserver);
token = strtok(metaservers,",");
while (token != NULL) {
/* compose the address structure */
address.sin_family = AF_INET;
address.sin_port = htons(metaport);
/* skip any blanks */
while (*token == ' ') token++;
/* attempt numeric translation first */
if ((address.sin_addr.s_addr = inet_addr(token)) == -1) {
struct hostent *hp;
/* then translation by name */
if ((hp = gethostbyname(token)) == NULL) {
/* if it didn't work, return failure and warning */
fprintf(stderr,
"cannot resolve host %s, check for DNS problems?\n",
token);
} else {
int i;
/* resolution worked, send a query to every metaserver listed */
for(i=0;;i++) {
/* check for end of list of addresses */
if (hp->h_addr_list[i] == NULL) break;
address.sin_addr.s_addr = *(long *) hp->h_addr_list[i];
if (verbose) fprintf(stderr,
"requesting player list from metaserver %s at %s\n",
token, inet_ntoa(address.sin_addr));
if (sendto(msock, req, reqlen, 0, (struct sockaddr *)&address,
sizeof(address)) < 0) {
perror("ReadMetasSend: sendto");
} else {
sent++;
}
}
}
} else {
/* call to inet_addr() worked, host name is in IP address form */
if (verbose) fprintf(stderr,
"requesting player list from metaserver %s\n",
inet_ntoa(address.sin_addr));
if (sendto(msock, req, reqlen, 0, (struct sockaddr *)&address,
sizeof(address)) < 0) {
perror("ReadMetasSend: sendto");
} else {
sent++;
}
}
/* look for next host name in list */
token = strtok(NULL,",");
} /* while (token != NULL) */
metaWindowName = "Netrek Server List";
return sent;
}
/* allocate or extend the server list */
static void grow(int servers)
{
int size;
if (serverlist == NULL) {
size = sizeof(struct servers) * servers;
serverlist = (struct servers *) malloc(size);
} else {
size = sizeof(struct servers) * (servers + num_servers);
serverlist = (struct servers *) realloc(serverlist, size);
}
}
static struct servers *server_find(char *address, int port)
{
int j;
for(j=0;j<num_servers;j++) {
struct servers *sp = serverlist + j;
if ((!strcmp(sp->address, address)) && (sp->port == port)) {
return sp;
}
}
return NULL;
}
static void version_r(struct sockaddr_in *address) {
char *p;
int servers, i;
time_t now = time(NULL);
/* number of servers */
p = strtok(NULL,"\n");
if (p == NULL) return;
servers = atoi(p);
/* sanity check on number of servers */
if (servers > 2048) return;
if (servers < 0) return;
if (verbose) fprintf(stderr,
"metaserver at %s responded with %d server%s\n",
inet_ntoa(address->sin_addr),
servers,
servers == 1 ? "" : "s" );
if (servers == 0) return;
/* for each server listed by this metaserver packet */
for(i=0;i<servers;i++) {
struct servers *sp = NULL;
char *host, type;
int port, status, age, players, queue, throwaway;
throwaway = 0;
host = strtok(NULL,","); /* hostname */
if (host == NULL) continue;
p = strtok(NULL,","); /* port */
if (p == NULL) continue;
port = atoi(p);
p = strtok(NULL,","); /* status */
if (p == NULL) continue;
status = atoi(p);
/* ignore servers based on status */
if (status > statusLevel)
throwaway++;
/* the sp->why_dead workaround */
if (status == 6)
if ((status - 3) <= statusLevel)
throwaway--;
p = strtok(NULL,","); /* age (of data in seconds) */
if (p == NULL) continue;
age = atoi(p);
p = strtok(NULL,","); /* players */
if (p == NULL) continue;
players = atoi(p);
p = strtok(NULL,","); /* queue size */
if (p == NULL) continue;
queue = atoi(p);
p = strtok(NULL,"\n"); /* server type */
if (p == NULL) continue;
type = p[0];
/* ignore paradise servers */
if (type == 'P') throwaway++;
/* if it's to be thrown away, do not add this server, skip to next */
if (throwaway) continue;
/* find in current server list? */
sp = server_find(host, port);
/* if it was found, check age */
if (sp != NULL) {
if ((now-age) < (sp->when-sp->age)) {
sp->age = now - (sp->when-sp->age);
sp->when = now;
sp->refresh = 1;
sp->lifetime = 20;
continue;
} else {
sp->age = age;
sp->when = now;
sp->lifetime = 20;
}
} else {
/* not found, store it at the end of the list */
grow(1);
sp = serverlist + num_servers;
num_servers++;
strncpy(sp->address,host,LINE);
sp->port = port;
sp->age = age;
sp->when = now;
sp->lifetime = 4;
}
sp->refresh = 1;
/* from meta.h of metaserver code */
#define SS_WORKING 0
#define SS_QUEUE 1
#define SS_OPEN 2
#define SS_EMPTY 3
#define SS_NOCONN 4
#define SS_INIT 5
/* not a real metaserver number, but overcomes a limitation of dropping text */
/* description of sp->why_dead */
#define SS_TOUT 6
switch (status) {
case SS_QUEUE:
sp->status = statusWait;
sp->players = queue;
break;
case SS_OPEN:
sp->status = statusOpen;
sp->players = players;
break;
case SS_EMPTY:
sp->status = statusNobody;
sp->players = 0;
break;
case SS_TOUT:
sp->status = statusTout;
sp->players = 0;
break;
case SS_NOCONN: /* no connection */
case SS_WORKING: /* metaserver should not return this */
case SS_INIT: /* nor this */
default:
sp->status = statusNoConnect;
sp->players = 0;
break;
}
sp->typeflag = type;
strcpy(sp->comment, "");
sp->pid = -1;
sp->exitstatus = 0;
sp->observer = 0;
}
}
static void version_s(struct sockaddr_in *address)
{
char *p;
time_t now = time(NULL);
/* use return address on packet as host address for this server,
since it isn't practical for the server to know it's own address; as
is the case with multihomed machines */
char *host = inet_ntoa(address->sin_addr);
if (verbose) fprintf(stderr, "server at %s responded\n", host);
p = strtok(NULL,","); /* server type */
if (p == NULL) return;
char type = p[0];
/* ignore paradise servers */
if (type == 'P') return;
p = strtok(NULL,","); /* comment */
if (p == NULL) return;
char *comment = strdup(p);
if (strlen(comment) > LINE) comment[LINE] = '\0';
p = strtok(NULL,","); /* number of ports */
if (p == NULL) return;
// int ports = atoi(p); /* not currently used */
// TODO: accept more than one port reply
p = strtok(NULL,","); /* port */
if (p == NULL) return;
int port = atoi(p);
p = strtok(NULL,","); /* players */
if (p == NULL) return;
int players = atoi(p);
p = strtok(NULL,","); /* queue size */
if (p == NULL) return;
// int queue = atoi(p); /* not currently used */
/* find in current server list? */
struct servers *sp = server_find(host, port);
/* if it was not found, add it to the end of the list */
if (sp == NULL) {
grow(1);
sp = serverlist + num_servers;
num_servers++;
}
/* add or update the entry */
strncpy(sp->address, host, LINE);
sp->port = port;
sp->age = 0;
sp->when = now;
sp->refresh = 1;
sp->lifetime = 20;
sp->players = players;
if (type == 'u' && players == 0) {
sp->status = statusNobody;
} else {
sp->status = statusOpen;
}
sp->typeflag = type;
strncpy(sp->comment, comment, LINE);
sp->pid = -1;
sp->exitstatus = 0;
sp->observer = 0;
free(comment);
}
static int ReadMetasRecv(int x)
{
struct sockaddr_in address; /* the address of the metaservers */
socklen_t length; /* length of the address */
int bytes; /* number of bytes received from meta' */
fd_set readfds; /* the file descriptor set for select() */
struct timeval timeout; /* timeout for select() call */
char packet[MAXMETABYTES]; /* buffer for packet returned by meta' */
char *p;
/* now await and process replies */
FD_ZERO(&readfds);
if (msock >= 0) FD_SET(msock, &readfds);
timeout.tv_sec = 10;
timeout.tv_usec = 0;
if (x != -1) FD_SET(x, &readfds);
if (select(FD_SETSIZE, &readfds, NULL, NULL, &timeout) < 0) {
if (errno == EINTR) return 0;
perror("ReadMetasRecv: select");
return 0;
}
/* if x activity, return immediately */
if (x != -1 && FD_ISSET(x, &readfds)) return 0;
if (msock < 0) return 0;
/* if the wait timed out, then we give up */
if (!FD_ISSET(msock, &readfds)) return 0;
/* so we have data back from a metaserver or server */
length = sizeof(address);
bytes = recvfrom(msock, packet, MAXMETABYTES, 0,
(struct sockaddr *)&address, &length );
if (bytes < 0) {
perror("ReadMetasRecv: recvfrom");
return 0;
}
/* terminate the packet received */
packet[bytes] = 0;
#ifdef DEBUG
fprintf(stderr, "%s", packet);
#endif /* DEBUG */
/* process the packet, updating our server list */
/* version identifier */
p = strtok(packet,",");
if (p == NULL) return 0;
switch (p[0]) {
case 'r': version_r(&address); seen++; break;
case 's': version_s(&address); seen++; break;
}
return 1;
}
static void SaveMetasCache()
{
FILE *cache;
char cacheFileName[PATH_MAX];
char tmpFileName[PATH_MAX];
char *cacheName;
int len;
cacheName = getdefault("metaUDPCache");
/* overwrite existing file if possible */
if (cacheName && !findfile(cacheName, cacheFileName))
strcpy(cacheFileName, cacheName);
if (cacheName)
{
len = strlen(cacheFileName);
strcpy(tmpFileName, cacheFileName);
/* create a temporary file with roughly the same name */
if ((cacheFileName[len - 1] == 'T') || (cacheFileName[len - 1] == 't'))
tmpFileName[len-1] = 'R';
else
tmpFileName[len-1] = 'T';
cache = fopen(tmpFileName, "w");
if (cache == NULL)
{
fprintf(stderr,
"Cannot create a metaUDPCache temporary file `%s'\n",
tmpFileName);
fprintf(stderr, "Meta-server read will not be cached.\n");
}
}
else
{
cache = NULL;
}
if (cache != NULL)
{
if (fwrite(&statusLevel, sizeof(statusLevel), 1, cache) != 1 ||
fwrite(&num_servers, sizeof(num_servers), 1, cache) != 1 ||
fwrite(serverlist, sizeof(struct servers), num_servers, cache) != num_servers) {
int xerrno = errno;
fclose(cache);
#ifdef _MSC_VER
_unlink(tmpFileName);
#else
unlink(tmpFileName);
#endif
errno = xerrno;
perror("Could not write to the new cache file");
}
fclose(cache);
#ifdef WIN32
/* Can't rename file to existing name under NT */
#ifdef _MSC_VER
_unlink(cacheName);
#else
unlink(cacheName);
#endif
#endif
if (rename(tmpFileName, cacheName) == -1)
perror("Could not rename new cache file");
}
}
static void LoadMetasCache()
{
FILE *cache;
char *cacheName;
char cacheFileName[PATH_MAX];
int i;
cacheName = getdefault("metaUDPCache");
if(!cacheName)
{
num_servers = 0;
return;
}
findfile(cacheName, cacheFileName);
cache = fopen(cacheFileName, "r");
if (cache == NULL)
{
num_servers = 0;
return;
}
/* ignore the cache if user changed statusLevel */
if (fread(&i, sizeof(i), 1, cache) != 1 ||
i != statusLevel)
{
num_servers = 0;
fclose(cache);
return;
}
/* read the server list into memory from the file */
if (fread(&num_servers, sizeof(num_servers), 1, cache) != 1) {
num_servers = 0;
fclose(cache);
return;
}
serverlist = (struct servers *) malloc(sizeof(struct servers)*num_servers);
if (fread(serverlist, sizeof(struct servers), num_servers, cache) != num_servers) {
free(serverlist);
serverlist = NULL;
num_servers = 0;
fclose(cache);
return;
}
fclose(cache);
/* hunt and kill old server lines from cache */
for(i=0;i<num_servers;i++)
{
int j;
/* mark each server as needing to be refreshed */
serverlist[i].refresh = 1;
/* skip the deletion below if the entry was received recently */
if (serverlist[i].lifetime-- > 0) continue;
/* delete this entry by moving the ones above down */
for(j=i;j<num_servers-1;j++)
{
memcpy(&serverlist[j],&serverlist[j+1],sizeof(struct servers));
}
/* adjust the current entry pointer, limit, and resize the memory */
i--;
num_servers--;
serverlist =
(struct servers *) realloc(serverlist,
sizeof(struct servers) * (num_servers));
}
}
void parsemeta()
/* Read and Parse the metaserver information, either from the metaservers
* by UDP (1), from a single metaserver by TCP (3), or from the cache (2).
*/
{
statusLevel = intDefault("metaStatusLevel", defaultStatLevel);
if (statusLevel < 0)
statusLevel = 0;
else if (statusLevel >= statusNull)
statusLevel = statusNull - 1;
ReadMetasSend();
LoadMetasCache();
metaHeight = 2 + N_OVERHEAD;
}
static void redraw(int i)
/* Redraw line i in the list */
{
char buf[LINE + 1];
struct servers *sp;
/* can't say a thing if line is beyond server list */
if (i >= num_servers) {
/* but we can at least blank the line shown */
if (i < metaHeight-3) W_WriteText(metaList, 0, i+1, W_White, "", 0, 0);
return;
}
sp = serverlist + i;
snprintf(buf, LINE, "%-40s ",
strlen(sp->comment) > 0 ? sp->comment : sp->address);
buf[80] = '\0';
switch(sp->status) {
case statusOpen:
snprintf(buf + strlen(buf), sp->players, "################");
snprintf(buf + strlen(buf), 17 - sp->players, " ");
strcat(buf, " ");
break;
case statusWait:
snprintf(buf + strlen(buf), 16, "################ Q%2d", sp->players);
break;
default:
snprintf(buf + strlen(buf), 16, "%-16s", statusStrings[sp->status]);
strcat(buf, " ");
break;
}
switch (sp->typeflag) {
case 'P':
strcat(buf, "Paradise");
break;
case 'B':
strcat(buf, "Bronco ");
break;
case 'C':
strcat(buf, "Chaos ");
break;
case 'I':
strcat(buf, "INL ");
break;
case 'S':
strcat(buf, "Sturgeon");
break;
case 'H':
strcat(buf, "Hockey ");
break;
case 'F':
strcat(buf, "Dogfight");
break;
default:
strcat(buf, "Unknown ");
break;
}
{
int age = sp->age;
char *units;
if (age > 86400) {
age = age / 86400;
units = "d";
} else if (age > 3600) {
age = age / 3600;
units = "h";
} else if (age > 90) {
age = age / 60;
units = "m";
} else {
units = "s";
}
sprintf(buf + strlen(buf), " %4d%s", age, units);
}
strcat(buf, " ");
if (sp->pid != -1) {
strcat(buf, sp->observer ? "Observing" : "Playing" );
} else {
switch (sp->exitstatus) {
case EXIT_FORK_FAILURE:
strcat(buf, "Cannot Start");
break;
case EXIT_UNKNOWN:
case EXIT_OK:
break;
case EXIT_CONNECT_FAILURE:
strcat(buf, "Connect Fail");
break;
case EXIT_LOGIN_FAILURE:
strcat(buf, "Login Fail");
break;
default:
{
int badversion = (sp->exitstatus - EXIT_BADVERSION_BASE);
if (badversion >= 0 && badversion <= MAXBADVERSION) {
strcat(buf, badversion_short_strings[badversion]);
} else {
strcat(buf, "Unknown Response");
}
}
break;
}
}
W_Color color = W_White;
if (i == chosen) color = W_Green;
if (sp->status == statusCantConnect) color = W_Red;
if (sp->pid != -1) color = W_Cyan;
W_WriteText(metaList, 0, i+1, color, buf, -1, 0);
sp->refresh = 0;
}
static char add_buffer[LINE];
static int add_offset;
static void add_init()
{
add_buffer[0] = '\0';
add_offset = 0;
}
static void add_redraw()
{
char buf[LINE + 1];
snprintf(buf, LINE, "Add a server: %s_", add_buffer);
W_WriteText(metaList, 0, metaHeight-B_ADD, W_Yellow, buf, -1, 0);
}
static void add_commit()
{
struct servers *sp;
grow(1);
sp = serverlist + num_servers;
num_servers++;
strncpy(sp->address, add_buffer, LINE);
sp->port = 2592;
sp->age = 0;
sp->when = time(NULL);
sp->refresh = 1;
sp->lifetime = 20;
sp->players = 0;
sp->status = statusNobody;
sp->typeflag = 'U';
strncpy(sp->comment, add_buffer, LINE);
sp->pid = -1;
sp->exitstatus = 0;
sp->observer = 0;
metawindow();
}
static int add_key(W_Event *data)
{
if (data->key == '\r') {
add_commit();
add_init();
add_redraw();
} else if (data->key == 21) {
add_init();
add_redraw();
} else if (data->key == 8 || data->key == '\177') {
if (add_offset > 0) {
add_buffer[add_offset-1] = '\0';
add_offset--;
add_redraw();
}
} else if (add_offset < (LINE-1)) {
add_buffer[add_offset+1] = '\0';
add_buffer[add_offset] = data->key;
add_offset++;
add_redraw();
}
return 0;
}
void metawindow()
/* Show the meta server menu window */
{
int i, height;
char *header;
static int lastHeight = 0;
if (!metaWin) {
height = 350 + metaHeight * (W_Textheight + 8) + 4 * (metaHeight - 1);
metaWin = W_MakeWindow("Netrek Server List", 0, 0, 716, height, NULL, 2,
foreColor);
W_SetBackgroundImage(metaWin, "Misc/map_back.png");
logo = W_ReadImage(metaWin, "netrek-green-white-300px.png");
metaList = W_MakeMenu("metalist", 50, 200, LINE, metaHeight, metaWin, 1);
lastHeight = metaHeight;
make_help();
} else {
if (metaHeight > lastHeight) {
W_ReinitMenu(metaList, LINE, metaHeight);
W_ResizeMenu(metaList, LINE, metaHeight);
lastHeight = metaHeight;
}
// FIXME: handle metaList growing beyond metaWin
}
header = "Server Players Type Age";
W_WriteText(metaList, 0, 0, W_Cyan, header, -1, 0);
for (i = 0; i < metaHeight; i++) redraw(i);
/* Give the window the right name */
W_RenameWindow(metaWin, metaWindowName);
/* Add additional options */
W_WriteText(metaList, 0, metaHeight-B_REFRESH, W_Yellow,
"Refresh (r)",
-1, 0);
add_redraw();
W_WriteText(metaList, 0, metaHeight-B_HELP, W_Yellow,
"Help & Tips (h)",
-1, 0);
W_WriteText(metaList, 0, metaHeight-B_QUIT, W_Yellow,
"Quit (q)",
-1, 0);
/* Map window */
W_MapWindow(metaList);
W_MapWindow(metaWin);
}
static void metadone(void)
{
W_UnmapWindow(metaList);
W_DropImage(logo);
W_UnmapWindow(metaWin);
SaveMetasCache();
free(serverlist);
}
static void refresh()
{
W_WriteText(metaList, 0, metaHeight-B_REFRESH, W_Red,
"Refresh (in progress)", -1, 0);
W_NextScreenShot(metaWin, 0, 0);
W_Flush();
ReadMetasSend();
}
static void refresh_cyclic()
{
struct servers *sp;
int i, interval = 30;
/* while we have a local player, chances are they want their network
link for play, and their eyes are on the tactical, they don't need
to know about other servers */
for (i=0;i<num_servers;i++) {
sp = serverlist + i;
if (sp->pid != -1) {
if (!sp->observer) return;
interval = 90;
}
}
/* don't do until sufficient time has elapsed */
if ((time(NULL) - last) > interval) {
W_NextScreenShot(metaWin, 0, 0);
ReadMetasSend();
}
}
static void choose(int way)
{
int was;
int lo = 0;
int hi = num_servers - 1;
if (hi < 0) {
return;
}
was = chosen;
if (chosen == -1) {
chosen = lo;
if (way > 0) chosen = lo;
if (way < 0) chosen = hi;
} else {
if (way > 0) { chosen++; if (chosen > hi) chosen = hi; }
if (way < 0) { chosen--; if (chosen < lo) chosen = lo; }
}
if (was != chosen) {
if (was != -1) redraw(was);
redraw(chosen);
}
}
static int chose(int which, unsigned char key)
{
struct servers *sp;
pid_t pid;
if (which != chosen) {
int was;
was = chosen;
chosen = which;
if (was != -1) redraw(was);
redraw(chosen);
}
sp = serverlist + which;
xtrekPort = sp->port;
if (key == W_RBUTTON) { /* Guess at an observer port */
xtrekPort++;
fprintf(stderr,
"you chose to observe on %s, guessing port %d\n",
sp->address, xtrekPort);
}
serverName = strdup(sp->address);
sp->pid = -1;
sp->exitstatus = EXIT_UNKNOWN;
fprintf(stderr, "you chose server %s port %d\n", serverName, xtrekPort);
if ((pid = fork()) == 0) {
char *args[16];
int argc = 0;
setpgid(0, 0);
args[argc++] = program;
args[argc++] = "--server";
args[argc++] = serverName;
if (xtrekPort != DEFAULT_PORT) {
char port[32];
sprintf(port, "%d", xtrekPort);
args[argc++] = "--port";
args[argc++] = strdup(port);
}
if (key == W_MBUTTON)
args[argc++] = "--fast-guest";
args[argc++] = NULL;
execvp(program, args);
perror("execvp");
_exit(1);
}
/* we are the parent, did the fork fail? */
if (pid < 0) {
perror("fork");
sp->exitstatus = EXIT_FORK_FAILURE;
} else {
sp->pid = pid;
sp->observer = (key == W_RBUTTON);
}
redraw(which);
W_Flush();
return 0;
}
static int button(W_Event *data)
{
if ((data->y > 0) && (data->y <= num_servers)) { /* click on server */
return chose(data->y - 1, data->key);
}
if (data->y == (metaHeight-B_REFRESH)) { /* refresh */
refresh();
} else if (data->y == metaHeight-B_HELP) { /* help */
toggle_help();
} else if (data->y == metaHeight-B_QUIT) { /* quit */
metadone();
terminate(0);
}
return 0;
}
static int key(W_Event *data)
{
if (data->y == (metaHeight-B_ADD)) return add_key(data);
if (data->key == 113 || data->key == 196) { /* q or ^d */
metadone();
terminate(0);
} else if (data->key == 114 || data->key == 210) { /* r or ^r */
refresh();
} else if (data->key == W_Key_Up) {
choose(-1);
} else if (data->key == W_Key_Down) {
choose(1);
} else if (data->key == '\r' || data->key == ' ') { /* enter or space */
if (chosen != -1) return chose(chosen, W_LBUTTON);
} else if (data->key == 'g') { /* g, for guest */
if (chosen != -1) return chose(chosen, W_MBUTTON);
} else if (data->key == 'o') { /* o, for observe */
if (chosen != -1) return chose(chosen, W_RBUTTON);
} else if (data->key == 'h') {
toggle_help();
} else {
return button(data);
}
return 0;
}
static int metareap_needed = 0;
/*! @brief Check if a child process, a playing client, has terminated.
@details Attempts a no hang wait on each active client process in
the server list and clears the pid entry if a child has
terminated.
@return activity count, number of processes seen to have terminated. */
static int metareap(void)
{
struct servers *sp;
int i, status, activity;
pid_t pid;
metareap_needed = 0;
activity = 0;
for (i=0;i<num_servers;i++) {
sp = serverlist + i;
if (sp->pid != -1) {
pid = waitpid(sp->pid, &status, WNOHANG);
if (pid == sp->pid) {
sp->pid = -1;
if (WIFEXITED(status)) {
activity++;
sp->exitstatus = WEXITSTATUS(status);
}
redraw(i);
W_Flush();
}
}
}
return activity;
}
/*! @brief child death signal handler
@details does nothing much, but needs to exist to ensure that
select(2) is given EINTR when a child terminates, otherwise we
will not note a termination until after the select times out.
*/
void sigchld(int ignored)
{
metareap_needed++;
}
void metainput(void)
/* Wait for actions in the meta-server window.
*
* This is really the meta-server window's own little input() function. It is
* needed so we don't have to use all the bull in the main input(). Plus to
* use it I'd have to call mapAll() first and the client would read in the
* default server and then call it up before I can select a server. */
{
W_Event data;
(void) SIGNAL(SIGCHLD, sigchld);
while (W_IsMapped(metaWin)) {
while (1) {
W_Flush();
if (W_EventsPending()) break;
if (ReadMetasRecv(W_Socket()) || metareap_needed) {
metareap();
metaHeight = num_servers + N_OVERHEAD;
metawindow();
W_Flush();
}
refresh_cyclic();
}
W_NextEvent(&data);
switch ((int) data.type) {
case W_EV_KEY:
if (data.Window == metaList || data.Window == metaWin)
if (key(&data)) return;
if (data.Window == metaHelpWin) hide_help();
break;
case W_EV_BUTTON:
if (data.Window == metaList)
if (button(&data)) return;
if (data.Window == metaHelpWin) hide_help();
if (data.Window == metaWin && data.y < 200)
W_NextScreenShot(metaWin, 0, 0);
break;
case W_EV_EXPOSE:
if (data.Window == metaHelpWin) expo_help();
if (data.Window == metaWin) {
W_DrawScreenShot(metaWin, 0, 0);
W_DrawImage(200, 9, logo);
}
break;
case W_EV_CLOSED:
if (data.Window == metaWin) {
fprintf(stderr, "you quit, by closing the server list window\n");
terminate(0);
}
break;
default:
break;
}
}
}
#endif
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