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