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->changeTime = 0;
  18
  19     chanuser->next_user = chan->user;
  20     chan->user = chanuser;
  21     chan->usercount++;
  22
  23     chanuser->next_chan = user->channel;
  24     user->channel = chanuser;
  25
  26     return chanuser;
  27 }
  28
  29 struct ChanUser* addInvisibleChanUser(struct ChanNode *chan, struct UserNode *user) {
  30     struct ChanUser *chanuser = malloc(sizeof(*chan));
  31     if (!chanuser)
  32     {
  33         perror("malloc() failed");
  34         return NULL;
  35     }
  36     chanuser->flags = CHANUSERFLAG_INVISIBLE;
  37     chanuser->user = user;
  38     chanuser->chan = chan;
  39
  40     chanuser->changeTime = 0;
  41
  42     chanuser->next_user = chan->user;
  43     chan->user = chanuser;
  44     chan->usercount++;
  45
  46     return chanuser;
  47 }
  48
  49 int isUserOnChan(struct UserNode *user, struct ChanNode *chan) {
  50     struct ChanUser *chanuser;
  51     for(chanuser = user->channel; chanuser; chanuser = chanuser->next_chan) {
  52         if(chanuser->chan == chan)
  53             return 1;
  54     }
  55     return 0;
  56 }
  57
  58 struct ChanUser* getChanUser(struct UserNode *user, struct ChanNode *chan) {
  59     struct ChanUser *chanuser;
  60     for(chanuser = user->channel; chanuser; chanuser = chanuser->next_chan) {
  61         if(chanuser->chan == chan)
  62             return chanuser;
  63     }
  64     return NULL;
  65 }
  66
  67 struct ChanUser* getChannelUsers(struct ChanNode *chan, struct ChanUser *last) {
  68     if(last == NULL)
  69         return chan->user;
  70     else
  71         return last->next_user;
  72 }
  73
  74 struct ChanUser* getUserChannels(struct UserNode *user, struct ChanUser *last) {
  75     if(last == NULL)
  76         return user->channel;
  77     else
  78         return last->next_chan;
  79 }
  80
  81 void delChanUser(struct ChanUser *chanuser, int freeChanUser) {
  82     struct ChanUser *cchanuser, *last;
  83     //remove it from the user's channel-list
  84     if(!(chanuser->flags & CHANUSERFLAG_INVISIBLE)) {
  85         last = NULL;
  86         for(cchanuser = chanuser->user->channel; cchanuser; cchanuser = cchanuser->next_chan) {
  87             if(cchanuser == chanuser) {
  88                 if(last)
  89                     last->next_chan = chanuser->next_chan;
  90                 else
  91                     chanuser->user->channel = chanuser->next_chan;
  92                 break;
  93             } else
  94                 last = cchanuser;
  95         }
  96     }
  97
  98     //remove it from the channel's user-list
  99     last = NULL;
 100     for(cchanuser = chanuser->chan->user; cchanuser; cchanuser = cchanuser->next_user) {
 101         if(cchanuser == chanuser) {
 102             chanuser->chan->usercount--;
 103             if(last)
 104                 last->next_user = chanuser->next_user;
 105             else
 106                 chanuser->chan->user = chanuser->next_user;
 107             break;
 108         } else
 109             last = cchanuser;
 110     }
 111
 112     if(freeChanUser)
 113         free(chanuser);
 114     else {
 115         chanuser->next_chan = NULL;
 116         chanuser->next_user = NULL;
 117     }
 118 }
 119
 120 void removeChanUserFromLists(struct ChanUser *chanuser, int remove_from_userlist, int remove_from_channellist, int freeChanUser) {
 121     struct ChanUser *cchanuser, *last;
 122     if(remove_from_userlist) {
 123         //remove it from the channel's user-list
 124         last = NULL;
 125         for(cchanuser = chanuser->chan->user; cchanuser; cchanuser = cchanuser->next_user) {
 126             if(cchanuser == chanuser) {
 127                 chanuser->chan->usercount--;
 128                 if(last)
 129                     last->next_user = chanuser->next_user;
 130                 else
 131                     chanuser->chan->user = chanuser->next_user;
 132                 break;
 133             } else
 134                 last = cchanuser;
 135         }
 136         chanuser->next_user = NULL;
 137     }
 138     if(remove_from_channellist) {
 139         //remove it from the user's channel-list
 140         last = NULL;
 141         for(cchanuser = chanuser->user->channel; cchanuser; cchanuser = cchanuser->next_chan) {
 142             if(cchanuser == chanuser) {
 143                 if(last)
 144                     last->next_chan = chanuser->next_chan;
 145                 else
 146                     chanuser->user->channel = chanuser->next_chan;
 147                 break;
 148             } else
 149                 last = cchanuser;
 150         }
 151         chanuser->next_chan = NULL;
 152     }
 153
 154     if(freeChanUser)
 155         free(chanuser);
 156 }
 157