X-Git-Url: http://git.pk910.de/?a=blobdiff_plain;f=ircd%2Fclass.c;h=216960534d2df75d48bd0e3e55173f4e7a40771a;hb=refs%2Fheads%2Fupstream;hp=f2485245e42aeb972a8110379acc40442f52861c;hpb=7bb66521b1c3b08eb495f7c4cbd28e3acb132f15;p=ircu2.10.12-pk.git

diff --git a/ircd/class.c b/ircd/class.c
index f248524..2169605 100644
--- a/ircd/class.c
+++ b/ircd/class.c
@@ -15,215 +15,292 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
  */
+/** @file
+ * @brief Implementation of connection class handling functions.
+ * @version $Id$
+ */
+#include "config.h"
+
 #include "class.h"
 #include "client.h"
 #include "ircd.h"
+#include "ircd_alloc.h"
+#include "ircd_features.h"
+#include "ircd_log.h"
 #include "ircd_reply.h"
+#include "ircd_string.h"
 #include "list.h"
 #include "numeric.h"
 #include "s_conf.h"
 #include "s_debug.h"
 #include "send.h"
-#include "struct.h"
 
-#include <assert.h>
+/* #include <assert.h> -- Now using assert in ircd_log.h */
 
-#define BAD_CONF_CLASS          ((unsigned int)-1)
-#define BAD_PING                ((unsigned int)-2)
-#define BAD_CLIENT_CLASS        ((unsigned int)-3)
+/** List of all connection classes. */
+static struct ConnectionClass* connClassList;
+/** Number of allocated connection classes. */
+static unsigned int connClassAllocCount;
 
-struct ConfClass *classes;
-
-unsigned int get_conf_class(struct ConfItem *aconf)
+/** Get start of connection class linked list. */
+const struct ConnectionClass* get_class_list(void)
 {
-  if ((aconf) && (aconf->confClass))
-    return (ConfClass(aconf));
+  return connClassList;
+}
 
-  Debug((DEBUG_DEBUG, "No Class For %s", (aconf) ? aconf->name : "*No Conf*"));
+/** Allocate a new connection class.
+ * If #connClassList is not null, insert the new class just after it.
+ * @return Newly allocated connection class structure.
+ */
+struct ConnectionClass* make_class(void)
+{
+  struct ConnectionClass *tmp;
 
-  return (BAD_CONF_CLASS);
+  tmp = (struct ConnectionClass*) MyCalloc(1, sizeof(struct ConnectionClass));
+  assert(0 != tmp);
+  tmp->ref_count = 1;
+  if (connClassList)
+  {
+    tmp->next = connClassList->next;
+    connClassList->next = tmp;
+  }
+  ++connClassAllocCount;
+  return tmp;
+}
 
+/** Dereference a connection class.
+ * @param[in] p Connection class to dereference.
+ */
+void free_class(struct ConnectionClass* p)
+{
+  if (p)
+  {
+    assert(0 == p->valid);
+    MyFree(p->cc_name);
+    MyFree(p->default_umode);
+    MyFree(p);
+    --connClassAllocCount;
+  }
 }
 
-static unsigned int get_conf_ping(struct ConfItem *aconf)
+/** Initialize the connection class list.
+ * A connection class named "default" is created, with ping frequency,
+ * connection frequency, maximum links and max SendQ values from the
+ * corresponding configuration features.
+ */
+void init_class(void)
 {
-  if ((aconf) && (aconf->confClass))
-    return (ConfPingFreq(aconf));
+  if (!connClassList) {
+    connClassList = (struct ConnectionClass*) make_class();
+    connClassList->next   = 0;
+  }
 
-  Debug((DEBUG_DEBUG, "No Ping For %s", (aconf) ? aconf->name : "*No Conf*"));
+  /* We had better not try and free this... */
+  ConClass(connClassList) = "default";
+  PingFreq(connClassList) = feature_int(FEAT_PINGFREQUENCY);
+  ConFreq(connClassList)  = feature_int(FEAT_CONNECTFREQUENCY);
+  MaxLinks(connClassList) = feature_int(FEAT_MAXIMUM_LINKS);
+  MaxSendq(connClassList) = feature_int(FEAT_DEFAULTMAXSENDQLENGTH);
+  connClassList->valid    = 1;
+  Links(connClassList)    = 1;
+}
 
-  return (BAD_PING);
+/** Mark current connection classes as invalid.
+ */
+void class_mark_delete(void)
+{
+  struct ConnectionClass* p;
+  assert(0 != connClassList);
+
+  for (p = connClassList->next; p; p = p->next)
+    p->valid = 0;
 }
 
-unsigned int get_client_class(struct Client *acptr)
+/** Unlink (and dereference) invalid connection classes.
+ * This is used in combination with class_mark_delete() during rehash
+ * to get rid of connection classes that are no longer in the
+ * configuration.
+ */
+void class_delete_marked(void)
 {
-  struct SLink *tmp;
-  struct ConfClass *cl;
-  unsigned int retc = BAD_CLIENT_CLASS;
+  struct ConnectionClass* cl;
+  struct ConnectionClass* prev;
+
+  Debug((DEBUG_DEBUG, "Class check:"));
 
-  if (acptr && !IsMe(acptr) && (acptr->confs))
-    for (tmp = acptr->confs; tmp; tmp = tmp->next)
+  for (prev = cl = connClassList; cl; cl = prev->next) {
+    Debug((DEBUG_DEBUG, "Class %s : CF: %d PF: %d ML: %d LI: %d SQ: %d",
+           ConClass(cl), ConFreq(cl), PingFreq(cl), MaxLinks(cl),
+           Links(cl), MaxSendq(cl)));
+    /*
+     * unlink marked classes, delete unreferenced ones
+     */
+    if (cl->valid || Links(cl) > 1)
+      prev = cl;
+    else
     {
-      if (!tmp->value.aconf || !(cl = tmp->value.aconf->confClass))
-        continue;
-      if (ConClass(cl) > retc || retc == BAD_CLIENT_CLASS)
-        retc = ConClass(cl);
+      prev->next = cl->next;
+      free_class(cl);
     }
+  }
+}
 
-  Debug((DEBUG_DEBUG, "Returning Class %d For %s", retc, acptr->name));
+/** Get connection class name for a configuration item.
+ * @param[in] aconf Configuration item to check.
+ * @return Name of connection class associated with \a aconf.
+ */
+char*
+get_conf_class(const struct ConfItem* aconf)
+{
+  if ((aconf) && (aconf->conn_class))
+    return (ConfClass(aconf));
 
-  return (retc);
+  Debug((DEBUG_DEBUG, "No Class For %s", (aconf) ? aconf->name : "*No Conf*"));
+
+  return NULL;
 }
 
-unsigned int get_client_ping(struct Client *acptr)
+/** Get ping time for a configuration item.
+ * @param[in] aconf Configuration item to check.
+ * @return Ping time for connection class associated with \a aconf.
+ */
+int get_conf_ping(const struct ConfItem* aconf)
 {
-  unsigned int ping = 0;
-  unsigned int ping2;
-  struct ConfItem *aconf;
-  struct SLink *link;
-
-  link = acptr->confs;
-
-  if (link) {
-    while (link) {
-      aconf = link->value.aconf;
-      if (aconf->status & (CONF_CLIENT | CONF_SERVER)) {
-        ping2 = get_conf_ping(aconf);
-        if ((ping2 != BAD_PING) && ((ping > ping2) || !ping))
-          ping = ping2;
-      }
-      link = link->next;
-    }
-  }
-  else {
-    ping = PINGFREQUENCY;
-    Debug((DEBUG_DEBUG, "No Attached Confs for: %s", acptr->name));
-  }
-  if (ping <= 0)
-    ping = PINGFREQUENCY;
-  Debug((DEBUG_DEBUG, "Client %s Ping %d", acptr->name, ping));
-  return (ping);
+  assert(0 != aconf);
+  if (aconf->conn_class)
+    return (ConfPingFreq(aconf));
+
+  Debug((DEBUG_DEBUG, "No Ping For %s", aconf->name));
+
+  return -1;
 }
 
-unsigned int get_con_freq(struct ConfClass * clptr)
+/** Get connection class name for a particular client.
+ * @param[in] acptr Client to check.
+ * @return Name of connection class to which \a acptr belongs.
+ */
+char*
+get_client_class(struct Client *acptr)
 {
-  if (clptr)
-    return (ConFreq(clptr));
-  else
-    return (CONNECTFREQUENCY);
+  struct SLink *tmp;
+  struct ConnectionClass *cl;
+
+  /* Return the most recent(first on LL) client class... */
+  if (acptr && !IsMe(acptr) && (cli_confs(acptr)))
+    for (tmp = cli_confs(acptr); tmp; tmp = tmp->next)
+    {
+      if (tmp->value.aconf && (cl = tmp->value.aconf->conn_class))
+        return ConClass(cl);
+    }
+  return "(null-class)";
 }
 
-/*
- * When adding a class, check to see if it is already present first.
- * if so, then update the information for that class, rather than create
- * a new entry for it and later delete the old entry.
- * if no present entry is found, then create a new one and add it in
- * immeadiately after the first one (class 0).
+/** Make sure we have a connection class named \a name.
+ * If one does not exist, create it.  Then set its ping frequency,
+ * connection frequency, maximum link count, and max SendQ according
+ * to the parameters.
+ * @param[in] name Connection class name.
+ * @param[in] ping Ping frequency for clients in this class.
+ * @param[in] confreq Connection frequency for clients.
+ * @param[in] maxli Maximum link count for class.
+ * @param[in] sendq Max SendQ for clients.
  */
-void add_class(unsigned int conClass, unsigned int ping, unsigned int confreq,
-    unsigned int maxli, unsigned int sendq)
+void add_class(char *name, unsigned int ping, unsigned int confreq,
+               unsigned int maxli, unsigned int sendq)
 {
-  struct ConfClass *t, *p;
-
-  t = find_class(conClass);
-  if ((t == classes) && (conClass != 0))
-  {
-    p = (struct ConfClass *) make_class();
-    NextClass(p) = NextClass(t);
-    NextClass(t) = p;
-  }
+  struct ConnectionClass* p;
+
+  Debug((DEBUG_DEBUG, "Add Class %s: cf: %u pf: %u ml: %u sq: %d",
+         name, confreq, ping, maxli, sendq));
+  assert(name != NULL);
+  p = do_find_class(name, 1);
+  if (!p)
+    p = make_class();
   else
-    p = t;
-  Debug((DEBUG_DEBUG, "Add Class %u: p %p t %p - cf: %u pf: %u ml: %u sq: %d",
-      conClass, p, t, confreq, ping, maxli, sendq));
-  ConClass(p) = conClass;
+    MyFree(ConClass(p));
+  ConClass(p) = name;
   ConFreq(p) = confreq;
   PingFreq(p) = ping;
   MaxLinks(p) = maxli;
-  MaxSendq(p) = (sendq > 0) ? sendq : DEFAULTMAXSENDQLENGTH;
-  if (p != t)
-    Links(p) = 0;
+  MaxSendq(p) = (sendq > 0) ?
+     sendq : feature_int(FEAT_DEFAULTMAXSENDQLENGTH);
+  p->valid = 1;
 }
 
-struct ConfClass *find_class(unsigned int cclass)
+/** Find a connection class by name.
+ * @param[in] name Name of connection class to search for.
+ * @param[in] extras If non-zero, include unreferenced classes.
+ * @return Pointer to connection class structure (or NULL if none match).
+ */
+struct ConnectionClass* do_find_class(const char *name, int extras)
 {
-  struct ConfClass *cltmp;
+  struct ConnectionClass *cltmp;
 
-  for (cltmp = FirstClass(); cltmp; cltmp = NextClass(cltmp))
-    if (ConClass(cltmp) == cclass)
+  for (cltmp = connClassList; cltmp; cltmp = cltmp->next) {
+    if (!cltmp->valid && !extras)
+      continue;
+    if (!ircd_strcmp(ConClass(cltmp), name))
       return cltmp;
-  return classes;
-}
-
-void check_class(void)
-{
-  struct ConfClass *cltmp, *cltmp2;
-
-  Debug((DEBUG_DEBUG, "Class check:"));
-
-  for (cltmp2 = cltmp = FirstClass(); cltmp; cltmp = NextClass(cltmp2))
-  {
-    Debug((DEBUG_DEBUG,
-        "Class %d : CF: %d PF: %d ML: %d LI: %d SQ: %d",
-        ConClass(cltmp), ConFreq(cltmp), PingFreq(cltmp),
-        MaxLinks(cltmp), Links(cltmp), MaxSendq(cltmp)));
-    if (IsMarkedDelete(cltmp))
-    {
-      NextClass(cltmp2) = NextClass(cltmp);
-      if (Links(cltmp) == 0)
-        free_class(cltmp);
-    }
-    else
-      cltmp2 = cltmp;
   }
+  return NULL;
 }
 
-void initclass(void)
-{
-  classes = (struct ConfClass *) make_class();
-
-  ConClass(FirstClass()) = 0;
-  ConFreq(FirstClass()) = CONNECTFREQUENCY;
-  PingFreq(FirstClass()) = PINGFREQUENCY;
-  MaxLinks(FirstClass()) = MAXIMUM_LINKS;
-  MaxSendq(FirstClass()) = DEFAULTMAXSENDQLENGTH;
-  Links(FirstClass()) = 0;
-  NextClass(FirstClass()) = NULL;
-}
-
-void report_classes(struct Client *sptr)
+/** Report connection classes to a client.
+ * @param[in] sptr Client requesting statistics.
+ * @param[in] sd Stats descriptor for request (ignored).
+ * @param[in] param Extra parameter from user (ignored).
+ */
+void
+report_classes(struct Client *sptr, const struct StatDesc *sd,
+               char *param)
 {
-  struct ConfClass *cltmp;
+  struct ConnectionClass *cltmp;
 
-  for (cltmp = FirstClass(); cltmp; cltmp = NextClass(cltmp))
-    send_reply(sptr, RPL_STATSYLINE, 'Y', ConClass(cltmp), PingFreq(cltmp),
-	       ConFreq(cltmp), MaxLinks(cltmp), MaxSendq(cltmp));
+  for (cltmp = connClassList; cltmp; cltmp = cltmp->next)
+    send_reply(sptr, RPL_STATSYLINE, (cltmp->valid ? 'Y' : 'y'),
+               ConClass(cltmp), PingFreq(cltmp), ConFreq(cltmp),
+               MaxLinks(cltmp), MaxSendq(cltmp), Links(cltmp) - 1);
 }
 
-unsigned int get_sendq(struct Client *cptr)
+/** Return maximum SendQ length for a client.
+ * @param[in] cptr Local client to check.
+ * @return Number of bytes allowed in SendQ for \a cptr.
+ */
+unsigned int
+get_sendq(struct Client *cptr)
 {
   assert(0 != cptr);
-  assert(0 != cptr->local);
+  assert(0 != cli_local(cptr));
 
-  if (cptr->max_sendq)
-    return cptr->max_sendq;
+  if (cli_max_sendq(cptr))
+    return cli_max_sendq(cptr);
 
-  else if (cptr->confs) {
+  else if (cli_confs(cptr)) {
     struct SLink*     tmp;
-    struct ConfClass* cl;
+    struct ConnectionClass* cl;
 
-    for (tmp = cptr->confs; tmp; tmp = tmp->next) {
-      if (!tmp->value.aconf || !(cl = tmp->value.aconf->confClass))
+    for (tmp = cli_confs(cptr); tmp; tmp = tmp->next) {
+      if (!tmp->value.aconf || !(cl = tmp->value.aconf->conn_class))
         continue;
-      if (ConClass(cl) != BAD_CLIENT_CLASS) {
-        cptr->max_sendq = MaxSendq(cl);
-        return cptr->max_sendq;
+      if (ConClass(cl) != NULL) {
+        cli_max_sendq(cptr) = MaxSendq(cl);
+        return cli_max_sendq(cptr);
       }
     }
   }
-  return DEFAULTMAXSENDQLENGTH;
+  return feature_int(FEAT_DEFAULTMAXSENDQLENGTH);
 }
 
+/** Report connection class memory statistics to a client.
+ * Send number of classes and number of bytes allocated for them.
+ * @param[in] cptr Client requesting statistics.
+ */
+void class_send_meminfo(struct Client* cptr)
+{
+  send_reply(cptr, SND_EXPLICIT | RPL_STATSDEBUG, ":Classes: inuse: %d(%d)",
+             connClassAllocCount,
+             connClassAllocCount * sizeof(struct ConnectionClass));
+}
+
+