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/*************************************************
* Exim monitor *
*************************************************/
/* Copyright (c) University of Cambridge 1995 - 2009 */
/* Copyright (c) The Exim Maintainers 2020 - 2021 */
/* See the file NOTICE for conditions of use and distribution. */
/* This module contains code to initialize things from the
environment and the arguments. */
#include "em_hdr.h"
/*************************************************
* Decode stripchart config *
*************************************************/
/* First determine how many are requested, then compile the
regular expressions and save the title strings. Note that
stripchart_number is initialized to 1 or 2 to count the always-
present queue stripchart, and the optional size-monitoring
stripchart. */
static void decode_stripchart_config(uschar *s)
{
int i;
/* Loop: first time just counts, second time does the
work. */
for (i = 0; i <= 1; i++)
{
int first = 1;
int count = 0;
uschar *p = s;
if (*p == '/') p++; /* allow optional / at start */
/* This loops for all the substrings, using the first flag
to determine whether each is the first or second of the pairs. */
while (*p)
{
uschar *pp;
/* Handle continuations */
if (*p == '\n')
{
while (*(++p) == ' ' || *p == '\t');
if (*p == '/') p++;
}
/* Find the end of the string and count if first string */
pp = p;
while (*p && *p != '/') p++;
if (first) count++;
/* Take action on the second time round. */
if (i != 0)
{
uschar buffer[256];
int indx = count + stripchart_varstart - 1;
Ustrncpy(buffer, pp, p-pp);
buffer[p-pp] = 0;
if (first)
{
size_t offset;
int err;
if (!(stripchart_regex[indx] =
pcre2_compile((PCRE2_SPTR)buffer,
PCRE2_ZERO_TERMINATED, PCRE_COPT,
&err, &offset, NULL)))
{
uschar errbuf[128];
pcre2_get_error_message(err, errbuf, sizeof(errbuf));
printf("regular expression error: %s at offset %ld "
"while compiling %s\n", errbuf, (long)offset, buffer);
exit(99);
}
}
else stripchart_title[indx] = string_copy(buffer);
}
/* Advance past the delimiter and flip the first/second flag */
p++;
first = !first;
}
/* On the first pass, we now know the number of stripcharts. Get
store for holding the pointers to the regular expressions and
title strings. */
if (i == 0)
{
stripchart_number += count;
stripchart_regex = (pcre2_code **)store_malloc(stripchart_number * sizeof(pcre2_code *));
stripchart_title = (uschar **)store_malloc(stripchart_number * sizeof(uschar *));
}
}
}
/*************************************************
* Initialize *
*************************************************/
void init(int argc, uschar **argv)
{
int x;
size_t erroroffset;
uschar *s;
argc = argc; /* These are currently unused. */
argv = argv;
/* Deal with simple values in the environment. */
if ((s = US getenv("ACTION_OUTPUT")))
{
if (Ustrcmp(s, "no") == 0) action_output = FALSE;
if (Ustrcmp(s, "yes") == 0) action_output = TRUE;
}
if ((s = US getenv("ACTION_QUEUE_UPDATE")))
{
if (Ustrcmp(s, "no") == 0) action_queue_update = FALSE;
if (Ustrcmp(s, "yes") == 0) action_queue_update = TRUE;
}
s = US getenv("BODY_MAX");
if (s && (x = Uatoi(s)) != 0) body_max = x;
if ((s = US getenv("EXIM_PATH")))
exim_path = string_copy(s);
if ((s = US getenv("EXIMON_EXIM_CONFIG")))
alternate_config = string_copy(s);
if ((s = US getenv("LOG_BUFFER")))
{
uschar c[1];
if (sscanf(CS s, "%d%c", &x, c) > 0)
{
if (c[0] == 'K' || c[0] == 'k') x *= 1024;
if (x < 1024) x = 1024;
log_buffer_size = x;
}
}
s = US getenv("LOG_DEPTH");
if (s && (x = Uatoi(s)) != 0) log_depth = x;
if ((s = US getenv("LOG_FILE_NAME")))
log_file = string_copy(s);
if ((s = US getenv("LOG_FONT")))
log_font = string_copy(s);
s = US getenv("LOG_WIDTH");
if (s && (x = Uatoi(s)) != 0) log_width = x;
if ((s = US getenv("MENU_EVENT")))
menu_event = string_copy(s);
s = US getenv("MIN_HEIGHT");
if (s && (x = Uatoi(s)) > 0) min_height = x;
s = US getenv("MIN_WIDTH");
if (s && (x = Uatoi(s)) > 0) min_width = x;
if ((s = US getenv("QUALIFY_DOMAIN")))
qualify_domain = string_copy(s);
else
qualify_domain = US""; /* Don't want NULL */
s = US getenv("QUEUE_DEPTH");
if (s && (x = Uatoi(s)) != 0) queue_depth = x;
if ((s = US getenv("QUEUE_FONT")))
queue_font = string_copy(s);
s = US getenv("QUEUE_INTERVAL");
if (s && (x = Uatoi(s)) != 0) queue_update = x;
s = US getenv("QUEUE_MAX_ADDRESSES");
if (s && (x = Uatoi(s)) != 0) queue_max_addresses = x;
s = US getenv("QUEUE_WIDTH");
if (s && (x = Uatoi(s)) != 0) queue_width = x;
if ((s = US getenv("SPOOL_DIRECTORY")))
spool_directory = string_copy(s);
s = US getenv("START_SMALL");
if (s && Ustrcmp(s, "yes") == 0) start_small = 1;
s = US getenv("TEXT_DEPTH");
if (s && (x = Uatoi(s)) != 0) text_depth = x;
if ((s = US getenv("WINDOW_TITLE")))
window_title = string_copy(s);
/* Deal with stripchart configuration. First see if we are monitoring
the size of a partition, then deal with log stripcharts in a separate
function */
s = US getenv("SIZE_STRIPCHART");
if (s && *s)
{
stripchart_number++;
stripchart_varstart++;
size_stripchart = string_copy(s);
s = US getenv("SIZE_STRIPCHART_NAME");
if (s != NULL && *s != 0) size_stripchart_name = string_copy(s);
}
if ((s = US getenv("LOG_STRIPCHARTS")))
decode_stripchart_config(s);
s = US getenv("STRIPCHART_INTERVAL");
if (s && (x = Uatoi(s)) != 0) stripchart_update = x;
s = US getenv("QUEUE_STRIPCHART_NAME");
queue_stripchart_name = s ? string_copy(s) : US"queue";
/* Compile the regex for matching yyyy-mm-dd at the start of a string. */
yyyymmdd_regex = pcre2_compile((PCRE2_SPTR)"^\\d{4}-\\d\\d-\\d\\d\\s",
PCRE2_ZERO_TERMINATED, PCRE_COPT, &x, &erroroffset, NULL);
}
/* End of em_init.c */
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