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/* Mixmaster version 3 -- (C) 1999 Anonymizer Inc.
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Mixmaster may be redistributed and modified under certain conditions.
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This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
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ANY KIND, either express or implied. See the file COPYRIGHT for
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details.
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Remailer statistics
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$Id: stats.c,v 1.2 2002/01/10 23:59:16 rabbi Exp $ */
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#include "mix3.h"
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#include <stdio.h>
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#include <string.h>
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#include <time.h>
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/* log that a message of type t has been received. Statistics for type 2
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messages are taken from the IDLOG instead of calling this function */
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int stats_log(int t)
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{
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FILE *f;
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f = mix_openfile(STATS, "a");
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if (f == NULL) {
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errlog(ERRORMSG, "Can't open %s!\n", STATS);
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return (-1);
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}
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lock(f);
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fprintf(f, "%d 1 %ld\n", t, (long) time(NULL));
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unlock(f);
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fclose(f);
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return (0);
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}
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/* log the current pool size after sending messages */
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int stats_out(int pool)
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{
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FILE *f;
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f = mix_openfile(STATS, "a");
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if (f == NULL) {
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errlog(ERRORMSG, "Can't open %s!\n", STATS);
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return (-1);
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}
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lock(f);
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fprintf(f, "p 1 %d %ld\n", pool, (long) time(NULL));
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unlock(f);
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fclose(f);
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return (0);
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}
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int stats(BUFFER *b)
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{
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FILE *s, *f;
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char line[LINELEN];
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long now, today, then;
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time_t t;
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long updated = 0, havestats = 0;
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int msgd[3][24], msg[3][80];
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int poold[2][24], pool[2][80];
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int i, num, type;
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now = (time(NULL) / (60 * 60) + 1) * 60 * 60;
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today = (now / SECONDSPERDAY) * SECONDSPERDAY;
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for (i = 0; i < 24; i++)
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msgd[0][i] = msgd[1][i] = msgd[2][i] = poold[0][i] = poold[1][i] = 0;
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for (i = 0; i < 80; i++)
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msg[0][i] = msg[1][i] = msg[2][i] = pool[0][i] = pool[1][i] = 0;
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s = mix_openfile(STATS, "r");
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if (s != NULL) {
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lock(s);
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fscanf(s, "%ld", &updated);
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while (fgets(line, sizeof(line), s) != NULL) {
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switch (line[0]) {
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case '0':
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case '1':
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case '2':
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sscanf(line, "%d %d %ld", &type, &num, &then);
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if (now - then < 0)
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break; /* keep memory consistent even if the time
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suddenly goes backwards :) */
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if (now - then < SECONDSPERDAY)
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msgd[type][(now - then) / (60 * 60)] += num;
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else if (today - then < 80 * SECONDSPERDAY)
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msg[type][(today - then) / SECONDSPERDAY] += num;
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if (havestats == 0 || then < havestats)
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havestats = then;
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break;
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case 'p':
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sscanf(line, "p %d %d %ld", &num, &i, &then);
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if (now - then < 0)
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break;
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if (now - then < SECONDSPERDAY) {
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poold[0][(now - then) / (60 * 60)] += num;
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poold[1][(now - then) / (60 * 60)] += i;
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} else if (today - then < 80 * SECONDSPERDAY) {
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poold[0][(today - then) / (24 * 60 * 60)] += num;
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poold[1][(today - then) / (24 * 60 * 60)] += i;
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}
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if (havestats == 0 || then < havestats)
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havestats = then;
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break;
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}
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}
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unlock(s);
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fclose(s);
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}
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f = mix_openfile(IDLOG, "r");
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if (f != NULL) {
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while (fscanf(f, "%*s %ld", &then) != EOF) {
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if (then < updated || now - then < 0)
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continue;
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if (now - then < SECONDSPERDAY)
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msgd[2][(now - then) / (60 * 60)]++;
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else if (today - then < 80 * SECONDSPERDAY)
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msg[2][(today - then) / SECONDSPERDAY]++;
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if (havestats == 0 || then < havestats)
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havestats = then;
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}
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fclose(f);
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}
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if (havestats == 0) {
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if (b != NULL)
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errlog(NOTICE, "No statistics available.\n");
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return (-1);
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}
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s = mix_openfile(STATS, "w");
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if (s == NULL) {
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errlog(ERRORMSG, "Can't create %s!\n", STATS);
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return (-1);
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}
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lock(s);
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fprintf(s, "%ld\n", (long) time(NULL)); /* time of stats.log update */
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for (i = 0; i < 24; i++) {
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for (type = 0; type < 3; type++)
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if (msgd[type][i] > 0)
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fprintf(s, "%d %d %ld\n", type, msgd[type][i], now - i * 60 * 60);
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if (poold[0][i] > 0)
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fprintf(s, "p %d %d %ld\n", poold[0][i], poold[1][i], now - i * 60 * 60);
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}
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for (i = 0; i < 80; i++) {
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for (type = 0; type < 3; type++)
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if (msg[type][i] > 0)
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fprintf(s, "%d %d %ld\n", type, msg[type][i],
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today - i * 24 * 60 * 60);
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if (pool[0][i] > 0)
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fprintf(s, "p %d %d %ld\n", pool[0][i], pool[1][i],
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today - i * 24 * 60 * 60);
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}
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unlock(s);
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fclose(s);
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if (b != NULL) {
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struct tm *gt;
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buf_sets(b, "Subject: Statistics for the ");
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buf_appends(b, SHORTNAME);
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buf_appends(b, " remailer\n\n");
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buf_appends(b, "Number of messages in the past 24 hours:\n");
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t = now;
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gt = gmtime(&t);
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for (i = 23; i >= 0; i--) {
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buf_appendf(b, " %2dh: ", (24 + gt->tm_hour - i) % 24);
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if (MIX) {
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if (PGP || UNENCRYPTED)
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buf_appends(b, " Mix:");
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buf_appendf(b, "%4d", msgd[2][i]);
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}
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if (PGP)
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buf_appendf(b, " PGP: %4d", msgd[1][i]);
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if (UNENCRYPTED)
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buf_appendf(b, " Unencrypted:%4d", msgd[0][i]);
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if (poold[0][i] > 0)
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buf_appendf(b, " [Pool size:%4d]", poold[1][i] / poold[0][i]);
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#if 0
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else
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buf_appends(b, " [ no remailing ]");
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#endif
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buf_nl(b);
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}
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if ((today - havestats) / SECONDSPERDAY >= 1)
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buf_appends(b, "\nNumber of messages per day:\n");
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for ((i = (today - havestats) / SECONDSPERDAY) > 79 ? 79 : i;
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i >= 1; i--) {
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t = now - i * SECONDSPERDAY;
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gt = localtime(&t);
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strftime(line, LINELEN, "%d %b: ", gt);
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buf_appends(b, line);
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if (MIX) {
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if (PGP || UNENCRYPTED)
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buf_appends(b, " Mix:");
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buf_appendf(b, "%4d", msg[2][i]);
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}
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if (PGP)
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buf_appendf(b, " PGP: %4d", msg[1][i]);
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if (UNENCRYPTED)
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buf_appendf(b, " Unencrypted:%4d", msg[0][i]);
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if (pool[0][i] > 0)
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buf_appendf(b, " [Pool size:%4d]", pool[1][i] / pool[0][i]);
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#if 0
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else
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buf_appends(b, " [ no remailing ]");
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#endif
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buf_nl(b);
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}
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}
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return (0);
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}
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int conf(BUFFER *out)
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{
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FILE *f;
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BUFFER *b, *line;
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int flag = 0;
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b = buf_new();
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line = buf_new();
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buf_sets(out, "Subject: Capabilities of the ");
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buf_appends(out, SHORTNAME);
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buf_appends(out, " remailer\n\n");
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buf_appends(out, remailer_type);
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buf_appends(out, VERSION);
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buf_nl(out);
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if (MIX + PGP + UNENCRYPTED == 1)
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buf_appends(out, "Supported format:");
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else
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buf_appends(out, "Supported formats:\n");
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if (MIX)
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buf_appends(out, " Mixmaster\n");
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if (PGP)
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buf_appends(out, " Cypherpunk with PGP encryption\n");
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if (UNENCRYPTED)
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buf_appends(out, " Cypherpunk (unencrypted)\n");
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buf_appendf(out, "Pool size: %d\n", POOLSIZE);
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if (SIZELIMIT)
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buf_appendf(out, "Maximum message size: %d kB\n", SIZELIMIT);
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f = mix_openfile(HDRFILTER, "r");
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if (f != NULL) {
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buf_read(b, f);
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fclose(f);
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while(buf_getline(b, line) != -1)
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if (line->length > 0 && line->data[0] != '#') {
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if (flag == 0) {
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buf_appends(out, "The following header lines will be filtered:\n");
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flag = 1;
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}
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buf_appends(out, " ");
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if (line->length > 3 && streq(line->data + line->length - 2, "/q")) {
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buf_append(out, line->data, line->length - 1);
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buf_appends(out, " => delete message");
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}
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else
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buf_cat(out, line);
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buf_nl(out);
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}
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buf_free(b);
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}
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flag = 0;
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b = readdestblk( );
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if ( b != NULL ) {
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while(buf_getline(b, line) != -1)
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if (line->length > 0 && !bufleft(line, "#") && !buffind(line, "@")) {
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/* mail addresses are not listed */
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if (flag == 0) {
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if (NEWS[0])
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buf_appends(out,
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"The following newsgroups/domains are blocked:\n");
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else
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buf_appends(out, "The following domains are blocked:\n");
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flag = 1;
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}
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buf_appendf(out, " %b\n", line);
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}
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if (flag == 0 && NEWS[0])
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buf_appends(out, "Note that other newsgroups may be unavailable at the remailer's news server.\n");
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}
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buf_nl(out);
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conf_premail(out);
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if ( b ) buf_free(b);
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buf_free(line);
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return (0);
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}
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void conf_premail(BUFFER *out)
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{
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buf_appends(out, "$remailer{\"");
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buf_appends(out, SHORTNAME);
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buf_appends(out, "\"} = \"<");
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buf_appends(out, REMAILERADDR);
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buf_appendc(out, '>');
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if (PGP || UNENCRYPTED)
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buf_appends(out, " cpunk");
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if (MIX)
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buf_appends(out, " mix");
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if (MIDDLEMAN)
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buf_appends(out, " middle");
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if (PGP)
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buf_appends(out, " pgp");
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if (PGP && !UNENCRYPTED)
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buf_appends(out, " pgponly");
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if (REPGP) {
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if (REMIX == 1)
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buf_appends(out, " repgp");
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else
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buf_appends(out, " repgp2");
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}
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if (REMIX == 1)
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buf_appends(out, " remix");
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else if (REMIX)
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buf_appends(out, " remix2");
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if (PGP || UNENCRYPTED)
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buf_appends(out, " latent hash cut test");
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if (PGP) {
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#ifdef USE_IDEA
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buf_appends(out, " ek");
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#endif
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buf_appends(out, " ekx");
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}
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#ifdef USE_IDEA
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buf_appends(out, " esub");
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#endif
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#if 0 /* obsolete */
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#ifdef USE_NSUB
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buf_appends(out, " nsub");
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#else
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buf_appends(out, " ksub");
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#endif
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#endif
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if (INFLATEMAX)
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buf_appendf(out, " inflt%d", INFLATEMAX);
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if (MAXRANDHOPS)
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buf_appendf(out, " rhop%d", MAXRANDHOPS);
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if (POOLSIZE >= 5)
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buf_appends(out, " reord");
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if (NEWS[0])
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buf_appends(out, " post");
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if (SIZELIMIT)
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buf_appendf(out, " klen%d", SIZELIMIT);
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buf_appends(out, "\";\n");
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}
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