Crossfire Server, Trunk
metaserver.c File Reference
#include "global.h"
#include <ctype.h>
#include <pthread.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include "metaserver2.h"
#include "version.h"
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Go to the source code of this file.

Data Structures

struct  _LocalMeta2Info
struct  _MetaServer2


typedef struct _LocalMeta2Info LocalMeta2Info
typedef struct _MetaServer2 MetaServer2


int count_players ()
static void free_metaserver2 (MetaServer2 *ms)
int metaserver2_init (void)
void * metaserver2_thread (void *junk)
static void metaserver2_updates (void)
static size_t metaserver2_writer (void *ptr, size_t size, size_t nmemb, void *data)
void metaserver_update (void)


static LocalMeta2Info local_info
static MetaServer2metaserver2
MetaServer2_UpdateInfo metaserver2_updateinfo
static pthread_mutex_t ms2_info_mutex

Detailed Description

Meta-server related functions.


Definition in file metaserver.c.

Typedef Documentation

◆ LocalMeta2Info

LocalMeta2Info basically holds all the non server metaserver2 information that we read from the metaserver2 file. Could just have individual variables, but doing it as a structure is cleaner I think, and might be more flexible if in the future, we want to pass this information to other functions (like plugin or something)

◆ MetaServer2

typedef struct _MetaServer2 MetaServer2

This is a linked list of all the metaservers - never really know how many we have.

Function Documentation

◆ count_players()

int count_players ( )

Definition at line 46 of file metaserver.c.

References first_player, FLAG_AFK, FLAG_WIZ, pl::hidden, socket_struct::is_bot, obj::map, pl::next, pl::ob, QUERY_FLAG, pl::socket, ST_GET_PARTY_PASSWORD, ST_PLAYING, and pl::state.

Referenced by check_shutdown(), and metaserver_update().

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◆ free_metaserver2()

static void free_metaserver2 ( MetaServer2 ms)

This frees any data associated with the MetaServer2 info, including the pointer itself. Caller is responsible for updating pointers (ms->next) - really only used when wanting to free all data.

msdata to free, pointer becomes invalid.

Definition at line 145 of file metaserver.c.

References _MetaServer2::hostname.

Referenced by metaserver2_init().

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◆ metaserver2_init()

int metaserver2_init ( void  )

This initializes the metaserver2 logic - it reads the metaserver2 file, storing the values away. Note that it may be possible/desirable for the server to re-read the values and restart connections (for example, a new metaserver has been added and you want to start updates to it immediately and not restart the server). Because of that, there is some extra logic (has_init) to try to take that into account.

1 if we will be updating the metaserver, 0 if no metaserver updates

Definition at line 164 of file metaserver.c.

References _LocalMeta2Info::archbase, buf, _LocalMeta2Info::codebase, Settings::confdir, Settings::csport, FALSE, _LocalMeta2Info::flags, FREE_AND_CLEAR, free_metaserver2(), _MetaServer2::hostname, _LocalMeta2Info::hostname, _LocalMeta2Info::html_comment, llevError, local_info, LOG(), _LocalMeta2Info::mapbase, MAX_BUF, metaserver2, metaserver2_thread(), metaserver2_updateinfo, ms2_info_mutex, _MetaServer2::next, _LocalMeta2Info::notification, _LocalMeta2Info::portnumber, settings, strcasecmp(), strdup_local, _LocalMeta2Info::text_comment, and TRUE.

Referenced by init().

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◆ metaserver2_thread()

void* metaserver2_thread ( void *  junk)

metserver2_thread is the function called from pthread_create. it is a trivial function - it just sleeps and calls the update function. The sleep time here is really quite arbitrary, but once a minute is probably often enough. A better approach might be to do a time() call and see how long the update takes, and sleep according to that.

This function should never return/exit.

Definition at line 509 of file metaserver.c.

References metaserver2_updates(), and nlohmann::detail::void().

Referenced by metaserver2_init().

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◆ metaserver2_updates()

static void metaserver2_updates ( void  )

This sends an update to the various metaservers. It generates the form, and then sends it to the server

Definition at line 458 of file metaserver.c.

References llevError, LOG(), metaserver2, metaserver2_writer(), _MetaServer2::next, and altar_valkyrie::res.

Referenced by metaserver2_thread().

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◆ metaserver2_writer()

static size_t metaserver2_writer ( void *  ptr,
size_t  size,
size_t  nmemb,
void *  data 

Handles writing of HTTP request data from the metaserver2. We treat the data as a string. We should really pay attention to the header data, and do something clever if we get 404 codes or the like.

ptractual data.
sizesize of the data.
nmembnumber of elements.
datauser-provided data, unused.
number of bytes processed, always the full size.

Definition at line 344 of file metaserver.c.

References navar-midane_time::data, llevError, LOG(), and nlohmann::detail::void().

Referenced by metaserver2_updates().

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◆ metaserver_update()

void metaserver_update ( void  )

Updates our info in the metaserver Note that this is used for both metaserver1 and metaserver2 - for metaserver2, it just copies dynamic data into private data structure, doing locking in the process.

Definition at line 78 of file metaserver.c.

References count_players(), cst_tot, CS_Stats::ibytes, _MetaServer2_UpdateInfo::in_bytes, metaserver2_updateinfo, ms2_info_mutex, _MetaServer2_UpdateInfo::num_players, CS_Stats::obytes, _MetaServer2_UpdateInfo::out_bytes, CS_Stats::time_start, and _MetaServer2_UpdateInfo::uptime.

Referenced by block_until_new_connection(), and do_specials().

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Variable Documentation

◆ local_info

LocalMeta2Info local_info

Non volatile information on the server.

Definition at line 133 of file metaserver.c.

Referenced by metaserver2_init().

◆ metaserver2

MetaServer2* metaserver2

Metaservers to send information to.

Definition at line 110 of file metaserver.c.

Referenced by metaserver2_init(), and metaserver2_updates().

◆ metaserver2_updateinfo

MetaServer2_UpdateInfo metaserver2_updateinfo

Statistics on players and such sent to the metaserver2.

Definition at line 136 of file metaserver.c.

Referenced by metaserver2_init(), and metaserver_update().

◆ ms2_info_mutex

pthread_mutex_t ms2_info_mutex

Mutex to protect access to metaserver2_updateinfo.

Definition at line 44 of file metaserver.c.

Referenced by metaserver2_init(), and metaserver_update().