| 1 | /*
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| 2 | * Copyright (c) 2009 Mike Belopuhov
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| 3 | *
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| 4 | * Permission to use, copy, modify, and distribute this software for any
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| 5 | * purpose with or without fee is hereby granted, provided that the above
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| 6 | * copyright notice and this permission notice appear in all copies.
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| 7 | *
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| 8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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| 9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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| 10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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| 11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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| 12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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| 13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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| 14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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| 15 | */
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| 16 |
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| 17 | #include <sys/queue.h>
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| 18 | #include <sys/tree.h>
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| 19 |
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| 20 | /*
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| 21 | * ICB packet has the following format: <length><type><data>
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| 22 | * <lenght> is one byte length of the packet excluding the <lenght> byte;
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| 23 | * <type> is one byte type of the packet;
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| 24 | * <data> might not be null-terminated.
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| 25 | */
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| 26 | #define ICB_MSGSIZE 256
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| 27 |
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| 28 | #define ICB_MAXGRPLEN 32
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| 29 | #define ICB_MAXNICKLEN 32
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| 30 | #define ICB_MAXPASSLEN 32
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| 31 | #define ICB_MAXTOPICLEN 160
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| 32 | #define ICB_MAXHOSTLEN 40
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| 33 | #define ICB_MTABLEN 50 /* XXX */
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| 34 |
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| 35 | #define ICB_M_LOGIN 'a'
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| 36 | #define ICB_M_OPEN 'b'
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| 37 | #define ICB_M_PERSONAL 'c'
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| 38 | #define ICB_M_STATUS 'd'
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| 39 | enum {
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| 40 | STATUS_ARRIVE,
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| 41 | STATUS_BOOT,
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| 42 | STATUS_DEPART,
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| 43 | STATUS_HELP,
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| 44 | STATUS_NAME,
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| 45 | STATUS_NOBEEP,
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| 46 | STATUS_NOTIFY,
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| 47 | STATUS_SIGNON,
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| 48 | STATUS_SIGNOFF,
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| 49 | STATUS_STATUS,
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| 50 | STATUS_TOPIC,
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| 51 | STATUS_WARNING
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| 52 | };
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| 53 | #define ICB_M_ERROR 'e'
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| 54 | #define ICB_M_IMPORTANT 'f'
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| 55 | #define ICB_M_EXIT 'g'
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| 56 | #define ICB_M_COMMAND 'h'
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| 57 | #define ICB_M_CMDOUT 'i'
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| 58 | enum {
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| 59 | CMDOUT_CO,
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| 60 | CMDOUT_EC,
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| 61 | CMDOUT_WG,
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| 62 | CMDOUT_WH,
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| 63 | CMDOUT_WL,
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| 64 | };
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| 65 | #define ICB_M_PROTO 'j'
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| 66 | #define ICB_M_BEEP 'k'
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| 67 | #define ICB_M_PING 'l'
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| 68 | #define ICB_M_PONG 'm'
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| 69 | #define ICB_M_NOOP 'n'
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| 70 |
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| 71 | #define ICB_M_SEP '\001'
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| 72 |
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| 73 | struct icb_group;
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| 74 |
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| 75 | struct icb_session {
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| 76 | uint64_t id;
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| 77 | char nick[ICB_MAXNICKLEN];
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| 78 | char client[ICB_MAXNICKLEN];
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| 79 | char host[ICB_MAXHOSTLEN];
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| 80 | char buffer[ICB_MSGSIZE];
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| 81 | struct event ev;
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| 82 | struct bufferevent *bev;
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| 83 | struct icb_group *group;
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| 84 | size_t length;
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| 85 | size_t rlen;
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| 86 | time_t login;
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| 87 | time_t last;
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| 88 | int port;
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| 89 | uint32_t flags;
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| 90 | #define SETF(t, f) ((t) |= (f))
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| 91 | #define CLRF(t, f) ((t) &= ~(f))
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| 92 | #define ISSETF(t, f) ((t) & (f))
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| 93 | #define ICB_SF_PROTOSENT 0x01
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| 94 | #define ICB_SF_LOGGEDIN 0x02
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| 95 | #define ICB_SF_NOGROUP 0x08
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| 96 | #define ICB_SF_NOBEEP 0x10
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| 97 | #define ICB_SF_NOBEEP2 0x20
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| 98 |
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| 99 | /* session tree */
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| 100 | RB_ENTRY(icb_session) node;
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| 101 |
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| 102 | /* in-group linkage */
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| 103 | LIST_ENTRY(icb_session) entry;
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| 104 | };
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| 105 |
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| 106 | struct icb_group {
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| 107 | char name[ICB_MAXGRPLEN];
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| 108 | char mpass[ICB_MAXPASSLEN];
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| 109 | char topic[ICB_MAXTOPICLEN];
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| 110 | LIST_ENTRY(icb_group) entry;
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| 111 | LIST_HEAD(, icb_session) sess;
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| 112 | struct icb_session *mod;
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| 113 | };
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| 114 |
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| 115 | LIST_HEAD(icb_grlist, icb_group) groups;
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| 116 |
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| 117 | struct icbd_callbacks {
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| 118 | void (*drop)(struct icb_session *, char *);
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| 119 | void (*log)(struct icb_session *, int, const char *, ...);
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| 120 | void (*send)(struct icb_session *, char *, ssize_t);
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| 121 | };
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| 122 |
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| 123 | #ifndef nitems
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| 124 | #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
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| 125 | #endif
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| 126 |
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| 127 | /* cmd.c */
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| 128 | void *icb_cmd_lookup(char *);
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| 129 |
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| 130 | /* icb.c */
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| 131 | struct icb_group *
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| 132 | icb_addgroup(struct icb_session *, char *, char *);
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| 133 | void icb_cmdout(struct icb_session *, int, char *);
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| 134 | void icb_delgroup(struct icb_group *);
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| 135 | void icb_error(struct icb_session *, const char *, ...);
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| 136 | void icb_init(struct icbd_callbacks *);
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| 137 | void icb_input(struct icb_session *);
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| 138 | inline int icb_ismod(struct icb_group *, struct icb_session *);
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| 139 | int icb_modpermit(struct icb_session *, int);
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| 140 | int icb_pass(struct icb_group *, struct icb_session *,
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| 141 | struct icb_session *);
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| 142 | void icb_privmsg(struct icb_session *, char *, char *);
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| 143 | void icb_remove(struct icb_session *, char *);
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| 144 | void icb_sendfmt(struct icb_session *, const char *, ...);
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| 145 | void icb_start(struct icb_session *);
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| 146 | void icb_status(struct icb_session *, int, const char *, ...);
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| 147 | void icb_status_group(struct icb_group *, struct icb_session *,
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| 148 | int, const char *, ...);
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| 149 | void icb_who(struct icb_session *, struct icb_group *);
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| 150 | int icb_vis(char *, const char *, size_t, int);
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| 151 |
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| 152 | /* callbacks from icbd.c */
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| 153 | void (*icb_drop)(struct icb_session *, char *);
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| 154 | void (*icb_log)(struct icb_session *, int, const char *, ...);
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| 155 | void (*icb_send)(struct icb_session *, char *, ssize_t);
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