src/exim_monitor/em_init.c

   1 /* $Cambridge: exim/src/exim_monitor/em_init.c,v 1.5 2009/11/16 19:50:36 nm4 Exp $ */
   2
   3 /*************************************************
   4 *                  Exim monitor                  *
   5 *************************************************/
   6
   7 /* Copyright (c) University of Cambridge 1995 - 2009 */
   8 /* See the file NOTICE for conditions of use and distribution. */
   9
  10 /* This module contains code to initialize things from the
  11 environment and the arguments. */
  12
  13
  14 #include "em_hdr.h"
  15
  16
  17
  18 /*************************************************
  19 *            Decode stripchart config            *
  20 *************************************************/
  21
  22 /* First determine how many are requested, then compile the
  23 regular expressions and save the title strings. Note that
  24 stripchart_number is initialized to 1 or 2 to count the always-
  25 present queue stripchart, and the optional size-monitoring
  26 stripchart. */
  27
  28 static void decode_stripchart_config(uschar *s)
  29 {
  30 int i;
  31
  32 /* Loop: first time just counts, second time does the
  33 work. */
  34
  35 for (i = 0; i <= 1; i++)
  36
  37   {
  38   int first = 1;
  39   int count = 0;
  40   uschar *p = s;
  41
  42   if (*p == '/') p++;   /* allow optional / at start */
  43
  44   /* This loops for all the substrings, using the first flag
  45   to determine whether each is the first or second of the pairs. */
  46
  47   while (*p)
  48     {
  49     uschar *pp;
  50     /* Handle continuations */
  51     if (*p == '\n')
  52       {
  53       while (*(++p) == ' ' || *p == '\t');
  54       if (*p == '/') p++;
  55       }
  56
  57     /* Find the end of the string and count if first string */
  58
  59     pp = p;
  60     while (*p && *p != '/') p++;
  61     if (first) count++;
  62
  63     /* Take action on the second time round. */
  64
  65     if (i != 0)
  66       {
  67       uschar buffer[256];
  68       int indx = count + stripchart_varstart - 1;
  69       Ustrncpy(buffer, pp, p-pp);
  70       buffer[p-pp] = 0;
  71       if (first)
  72         {
  73         int offset;
  74         const uschar *error;
  75         stripchart_regex[indx] = pcre_compile(CS buffer, PCRE_COPT,
  76           (const char **)&error, &offset, NULL);
  77         if (stripchart_regex[indx] == NULL)
  78           {
  79           printf("regular expression error: %s at offset %d "
  80             "while compiling %s\n", error, offset, buffer);
  81           exit(99);
  82           }
  83         }
  84       else stripchart_title[indx] = string_copy(buffer);
  85       }
  86
  87     /* Advance past the delimiter and flip the first/second flag */
  88
  89     p++;
  90     first = !first;
  91     }
  92
  93   /* On the first pass, we now know the number of stripcharts. Get
  94   store for holding the pointers to the regular expressions and
  95   title strings. */
  96
  97   if (i == 0)
  98     {
  99     stripchart_number += count;
 100     stripchart_regex = (pcre **)store_malloc(stripchart_number * sizeof(pcre *));
 101     stripchart_title = (uschar **)store_malloc(stripchart_number * sizeof(uschar *));
 102     }
 103   }
 104 }
 105
 106
 107 /*************************************************
 108 *                    Initialize                  *
 109 *************************************************/
 110
 111 void init(int argc, uschar **argv)
 112 {
 113 int x;
 114 int erroroffset;
 115 uschar *s;
 116 const uschar *error;
 117
 118 argc = argc;     /* These are currently unused. */
 119 argv = argv;
 120
 121 /* Deal with simple values in the environment. */
 122
 123 s = US getenv("ACTION_OUTPUT");
 124 if (s != NULL)
 125   {
 126   if (Ustrcmp(s, "no") == 0) action_output = FALSE;
 127   if (Ustrcmp(s, "yes") == 0) action_output = TRUE;
 128   }
 129
 130 s = US getenv("ACTION_QUEUE_UPDATE");
 131 if (s != NULL)
 132   {
 133   if (Ustrcmp(s, "no") == 0) action_queue_update = FALSE;
 134   if (Ustrcmp(s, "yes") == 0) action_queue_update = TRUE;
 135   }
 136
 137 s = US getenv("BODY_MAX");
 138 if (s != NULL && (x = Uatoi(s)) != 0) body_max = x;
 139
 140 s = US getenv("EXIM_PATH");
 141 if (s != NULL) exim_path = string_copy(s);
 142
 143 s = US getenv("EXIMON_EXIM_CONFIG");
 144 if (s != NULL) alternate_config = string_copy(s);
 145
 146 s = US getenv("LOG_BUFFER");
 147 if (s != NULL)
 148   {
 149   uschar c[1];
 150   if (sscanf(CS s, "%d%c", &x, c) > 0)
 151     {
 152     if (c[0] == 'K' || c[0] == 'k') x *= 1024;
 153     if (x < 1024) x = 1024;
 154     log_buffer_size = x;
 155     }
 156   }
 157
 158 s = US getenv("LOG_DEPTH");
 159 if (s != NULL && (x = Uatoi(s)) != 0) log_depth = x;
 160
 161 s = US getenv("LOG_FILE_NAME");
 162 if (s != NULL) log_file = string_copy(s);
 163
 164 s = US getenv("LOG_FONT");
 165 if (s != NULL) log_font = string_copy(s);
 166
 167 s = US getenv("LOG_WIDTH");
 168 if (s != NULL && (x = Uatoi(s)) != 0) log_width = x;
 169
 170 s = US getenv("MENU_EVENT");
 171 if (s != NULL) menu_event = string_copy(s);
 172
 173 s = US getenv("MIN_HEIGHT");
 174 if (s != NULL && (x = Uatoi(s)) > 0) min_height = x;
 175
 176 s = US getenv("MIN_WIDTH");
 177 if (s != NULL && (x = Uatoi(s)) > 0) min_width = x;
 178
 179 s = US getenv("QUALIFY_DOMAIN");
 180 if (s != NULL) qualify_domain = string_copy(s);
 181   else qualify_domain = US"";  /* Don't want NULL */
 182
 183 s = US getenv("QUEUE_DEPTH");
 184 if (s != NULL && (x = Uatoi(s)) != 0) queue_depth = x;
 185
 186 s = US getenv("QUEUE_FONT");
 187 if (s != NULL) queue_font = string_copy(s);
 188
 189 s = US getenv("QUEUE_INTERVAL");
 190 if (s != NULL && (x = Uatoi(s)) != 0) queue_update = x;
 191
 192 s = US getenv("QUEUE_MAX_ADDRESSES");
 193 if (s != NULL && (x = Uatoi(s)) != 0) queue_max_addresses = x;
 194
 195 s = US getenv("QUEUE_WIDTH");
 196 if (s != NULL && (x = Uatoi(s)) != 0) queue_width = x;
 197
 198 s = US getenv("SPOOL_DIRECTORY");
 199 if (s != NULL) spool_directory = string_copy(s);
 200
 201 s = US getenv("START_SMALL");
 202 if (s != NULL && Ustrcmp(s, "yes") == 0) start_small = 1;
 203
 204 s = US getenv("TEXT_DEPTH");
 205 if (s != NULL && (x = Uatoi(s)) != 0) text_depth = x;
 206
 207 s = US getenv("WINDOW_TITLE");
 208 if (s != NULL) window_title = string_copy(s);
 209
 210 /* Deal with stripchart configuration. First see if we are monitoring
 211 the size of a partition, then deal with log stripcharts in a separate
 212 function */
 213
 214 s = US getenv("SIZE_STRIPCHART");
 215 if (s != NULL && *s != 0)
 216   {
 217   stripchart_number++;
 218   stripchart_varstart++;
 219   size_stripchart = string_copy(s);
 220   s = US getenv("SIZE_STRIPCHART_NAME");
 221   if (s != NULL && *s != 0) size_stripchart_name = string_copy(s);
 222   }
 223
 224 s = US getenv("LOG_STRIPCHARTS");
 225 if (s != NULL) decode_stripchart_config(s);
 226
 227 s = US getenv("STRIPCHART_INTERVAL");
 228 if (s != NULL && (x = Uatoi(s)) != 0) stripchart_update = x;
 229
 230 s = US getenv("QUEUE_STRIPCHART_NAME");
 231 queue_stripchart_name = (s != NULL)? string_copy(s) : US"queue";
 232
 233 /* Compile the regex for matching yyyy-mm-dd at the start of a string. */
 234
 235 yyyymmdd_regex = pcre_compile("^\\d{4}-\\d\\d-\\d\\d\\s", PCRE_COPT,
 236   (const char **)&error, &erroroffset, NULL);
 237 }
 238
 239 /* End of em_init.c */