ChanUser.c

   1
   2 #include "ChanUser.h"
   3 #include "ChanNode.h"
   4 #include "UserNode.h"
   5
   6 struct ChanUser* addChanUser(struct ChanNode *chan, struct UserNode *user) {
   7     struct ChanUser *chanuser = malloc(sizeof(*chan));
   8     if (!chanuser)
   9     {
  10         perror("malloc() failed");
  11         return NULL;
  12     }
  13     chanuser->flags = 0;
  14     chanuser->user = user;
  15     chanuser->chan = chan;
  16
  17     chanuser->next_user = chan->user;
  18     chan->user = chanuser;
  19     chan->usercount++;
  20
  21     chanuser->next_chan = user->channel;
  22     user->channel = chanuser;
  23
  24     return chanuser;
  25 }
  26
  27 int isUserOnChan(struct UserNode *user, struct ChanNode *chan) {
  28     struct ChanUser *chanuser;
  29     for(chanuser = user->channel; chanuser; chanuser = chanuser->next_chan) {
  30         if(chanuser->chan == chan)
  31             return 1;
  32     }
  33     return 0;
  34 }
  35
  36 struct ChanUser* getChanUser(struct UserNode *user, struct ChanNode *chan) {
  37     struct ChanUser *chanuser;
  38     for(chanuser = user->channel; chanuser; chanuser = chanuser->next_chan) {
  39         if(chanuser->chan == chan)
  40             return chanuser;
  41     }
  42     return NULL;
  43 }
  44
  45 struct ChanUser* getChannelUsers(struct ChanNode *chan, struct ChanUser *last) {
  46     if(last == NULL)
  47         return chan->user;
  48     else
  49         return last->next_user;
  50 }
  51
  52 struct ChanUser* getUserChannels(struct UserNode *user, struct ChanUser *last) {
  53     if(last == NULL)
  54         return user->channel;
  55     else
  56         return last->next_chan;
  57 }
  58
  59 void delChanUser(struct ChanUser *chanuser, int freeChanUser) {
  60     struct ChanUser *cchanuser, *last;
  61     //remove it from the user's channel-list
  62     last = NULL;
  63     for(cchanuser = chanuser->user->channel; cchanuser; cchanuser = cchanuser->next_chan) {
  64         if(cchanuser == chanuser) {
  65             if(last)
  66                 last->next_chan = chanuser->next_chan;
  67             else
  68                 chanuser->user->channel = chanuser->next_chan;
  69             break;
  70         } else
  71             last = cchanuser;
  72     }
  73
  74     //remove it from the channel's user-list
  75     last = NULL;
  76     for(cchanuser = chanuser->chan->user; cchanuser; cchanuser = cchanuser->next_user) {
  77         if(cchanuser == chanuser) {
  78             chanuser->chan->usercount--;
  79             if(last)
  80                 last->next_user = chanuser->next_user;
  81             else
  82                 chanuser->chan->user = chanuser->next_user;
  83             break;
  84         } else
  85             last = cchanuser;
  86     }
  87
  88     if(freeChanUser)
  89         free(chanuser);
  90     else {
  91         chanuser->next_chan = NULL;
  92         chanuser->next_user = NULL;
  93     }
  94 }
  95
  96 void removeChanUserFromLists(struct ChanUser *chanuser, int remove_from_userlist, int remove_from_channellist, int freeChanUser) {
  97     struct ChanUser *cchanuser, *last;
  98     if(remove_from_userlist) {
  99         //remove it from the channel's user-list
 100         last = NULL;
 101         for(cchanuser = chanuser->chan->user; cchanuser; cchanuser = cchanuser->next_user) {
 102             if(cchanuser == chanuser) {
 103                 chanuser->chan->usercount--;
 104                 if(last)
 105                     last->next_user = chanuser->next_user;
 106                 else
 107                     chanuser->chan->user = chanuser->next_user;
 108                 break;
 109             } else
 110                 last = cchanuser;
 111         }
 112         chanuser->next_user = NULL;
 113     }
 114     if(remove_from_channellist) {
 115         //remove it from the user's channel-list
 116         last = NULL;
 117         for(cchanuser = chanuser->user->channel; cchanuser; cchanuser = cchanuser->next_chan) {
 118             if(cchanuser == chanuser) {
 119                 if(last)
 120                     last->next_chan = chanuser->next_chan;
 121                 else
 122                     chanuser->user->channel = chanuser->next_chan;
 123                 break;
 124             } else
 125                 last = cchanuser;
 126         }
 127         chanuser->next_chan = NULL;
 128     }
 129
 130     if(freeChanUser)
 131         free(chanuser);
 132 }
 133