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comparison support/bboards/mmdfI/bboards/ch_bboards.c @ 0:bce86c4163a3

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Initial revision
author kono
date Mon, 18 Apr 2005 23:46:02 +0900
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-1:000000000000 0:bce86c4163a3
1 #include "util.h"
2 #include "mmdf.h"
3 #include "ch.h"
4 #include <signal.h>
5
6 /*
7 *
8 * C H _ B B O A R D S . C
9 *
10 * the new BBoards channel
11 *
12 *
13 * This is the channel that is used to handle Internet BBoard
14 * distribution in an intelligent fashion. In order to run it, you
15 * need the UCI BBoards facility installed. This requires the
16 * establishment of a special login called ``bboards'', and the
17 * getbbent() package.
18 *
19 * The idea is simple. Distribution lists get aliased to go through
20 * this channel. Suppose that the relay (or site) using ch_bboards
21 * subscribes to UNIX-WIZARDS. The maintainer of the list is given
22 * the address ``dist-unix-wizards'' to send to for this relay and all
23 * sites that it serves. The site manager then defines the following
24 * alias in the aliases file:
25 *
26 * dist-unix-wizards: unix-wizards@dist-bboards
27 *
28 * This channel (and this channel alone) is then defined to serve the
29 * ``dist-bboards'' host. When it gets invoked, the channel does two
30 * things: First, if the relay itself subscribes to the BBoard (the
31 * bb_file entry in the BBoards file is non-empty), then it delivers
32 * the message to the file. Second, if other sites subscribe to the
33 * BBoard, then ch_bboards will enter the message back into the queue
34 * system using the ``bboards'' login as the sender.
35 *
36 * This achieves two goals: first, the incoming bandwidth of relays
37 * is not degraded by many sites subscribing to the same BBoard;
38 * second, if an address goes bad down the line, the relay's
39 * ``bboards'' login gets the message back (not the originator). Since
40 * the relay's PostMaster is assumed to monitor this mailbox, problems
41 * can be found and corrected.
42 *
43 * Finally, ch_bboards can be run by a site that does not relay for
44 * other sites. In this case, the bb_dist field is empty.
45 *
46 */
47
48 /* Unlike previous versions of ch_bboards, this version does not change
49 * the contents of the headers of the message being re-distributed.
50 * The following changes are made:
51 *
52 * Envelope: The failure address is changed to bboards@locname
53 * Headers: Another Received: is added
54 *
55 *
56 * The local copy going to the BBoard has two entries prepended to the
57 * headers:
58 *
59 * BBoard-ID: n
60 * BB-Posted: date/time
61 *
62 */
63
64 /* */
65
66 extern char logdfldir[];
67
68 extern struct ll_struct chanlog;
69 struct ll_struct *logptr = &chanlog;
70
71 char *dupfpath ();
72
73 /* */
74
75 main (argc, argv)
76 int argc;
77 char **argv;
78 {
79 short retval;
80 Chan * chanptr;
81
82 ll_hdinit (logptr, "BB");
83 logptr -> ll_file = dupfpath (logptr -> ll_file, logdfldir);
84
85 siginit ();
86 signal (SIGINT, SIG_IGN);
87
88 if ((chanptr = ch_nm2struct (*argv)) == (Chan *) NOTOK)
89 err_abrt (RP_PARM, "unknown channel name '%s'", *argv);
90
91 retval = ch_bboards (argc, argv, chanptr);
92 ll_close (logptr);
93
94 exit (retval);
95 }
96
97 /* */
98
99 ch_bboards (argc, argv, chanptr)
100 int argc;
101 char **argv;
102 Chan * chanptr;
103 {
104 #ifdef DEBUG
105 ll_log (logptr, LLOGBTR, "ch_bboards(argc=%d,*argv='%s')", argc, *argv);
106 #endif
107
108 if (rp_isbad (qu_init (argc, argv)))
109 return RP_NO;
110 if (rp_isbad (bb_init (chanptr)))
111 return RP_NO;
112
113 if (rp_isbad (qu2bb_send ()))
114 return RP_NO;
115
116 qu_end (OK);
117 bb_end (OK);
118
119 return RP_OK;
120 }
121
122 /* */
123
124 err_abrt (code, fmt, b, c, d)
125 short code;
126 char *fmt,
127 *b,
128 *c,
129 *d;
130 {
131 char linebuf[LINESIZE];
132
133 qu_end (NOTOK);
134 bb_end (NOTOK);
135
136 sprintf (linebuf, "%s%s", "[abend: %s]", fmt);
137 ll_log (logptr, LLOGFAT, linebuf, rp_valstr (code), b, c, d);
138 ll_close (logptr);
139
140 exit (code);
141 }