aboutsummaryrefslogtreecommitdiffstats
path: root/mail.c
blob: 68f29b6ebf53f5c857a682c68e6dff6af287cac4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
/* $Id: mail.c,v 1.16 2004/03/03 03:47:04 reinelt Exp $
 *
 * email specific functions
 *
 * Copyright 2001 Axel Ehnert <axel@ehnert.net>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * LCD4Linux is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * $Log: mail.c,v $
 * Revision 1.16  2004/03/03 03:47:04  reinelt
 * big patch from Martin Hejl:
 * - use qprintf() where appropriate
 * - save CPU cycles on gettimeofday()
 * - add quit() functions to free allocated memory
 * - fixed lots of memory leaks
 *
 * Revision 1.15  2004/01/29 04:40:02  reinelt
 * every .c file includes "config.h" now
 *
 * Revision 1.14  2004/01/09 04:16:06  reinelt
 * added 'section' argument to cfg_get(), but NULLed it on all calls by now.
 *
 * Revision 1.13  2003/10/05 17:58:50  reinelt
 * libtool junk; copyright messages cleaned up
 *
 * Revision 1.12  2003/02/22 07:53:10  reinelt
 * cfg_get(key,defval)
 *
 * Revision 1.11  2001/09/12 05:58:16  reinelt
 * fixed bug in mail2.c
 *
 * Revision 1.10  2001/09/12 05:37:22  reinelt
 *
 * fixed a bug in seti.c (file was never closed, lcd4linux run out of fd's
 *
 * improved socket debugging
 *
 * Revision 1.9  2001/08/05 17:13:29  reinelt
 *
 * cleaned up inlude of sys/time.h and time.h
 *
 * Revision 1.8  2001/03/15 15:49:23  ltoetsch
 * fixed compile HD44780.c, cosmetics
 *
 * Revision 1.7  2001/03/15 14:25:05  ltoetsch
 * added unread/total news
 *
 * Revision 1.6  2001/03/14 13:19:29  ltoetsch
 * Added pop3/imap4 mail support
 *
 * Revision 1.5  2001/03/13 08:34:15  reinelt
 *
 * corrected a off-by-one bug with sensors
 *
 * Revision 1.4  2001/03/08 09:02:04  reinelt
 *
 * seti client cleanup
 *
 * Revision 1.3  2001/02/21 04:48:13  reinelt
 *
 * big mailbox patch from Axel Ehnert
 * thanks to herp for his idea to check mtime of mailbox
 *
 * Revision 1.2  2001/02/19 00:15:46  reinelt
 *
 * integrated mail and seti client
 * major rewrite of parser and tokenizer to support double-byte tokens
 *
 * Revision 1.1  2001/02/18 22:11:34  reinelt
 * *** empty log message ***
 *
 */

/* 
 * exported functions:
 *
 * Mail (int index, int *num)
 *   returns 0 if ok, -1 if error
 *   sets num to number of emails in mailbox #index
 *
 */

#define FALSE 0
#define TRUE 1

#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "cfg.h"
#include "debug.h"
#include "mail.h"

int Mail (int index, int *num, int *unseen)
{
  FILE *fstr;
  char buffer[32];
  static int   cfgmbx[MAILBOXES+1]={[0 ... MAILBOXES]=TRUE,}; // Mailbox #index configured?
  static time_t mbxlt[MAILBOXES+1]={[0 ... MAILBOXES]=0,};    // mtime of Mailbox #index
  static int   mbxnum[MAILBOXES+1]={[0 ... MAILBOXES]=0,};    // Last calculated # of mails
  static time_t   now[MAILBOXES+1]={[0 ... MAILBOXES]=0,};    // Last call to procedure at 
                                                              // for Mailbox #index
  char *fnp1;
  int v1=0;
  int last_line_blank1;                   // Was the last line blank?
  struct stat fst;
  int rc;
  char *s:
  int i;

  char *txt;
  char txt1[100];

  if (index<0 || index>MAILBOXES) return -1;

  if (now[index] == 0) { /* first time, to give faster a chance */
    now[index] = -1-index;
    return 0;
  }
  if (now[index] < -1) { /* wait different time to avoid long startup */
    now[index]++;
    return 0;
  }
  if (now[index] > 0) {	/* not first time, delay  */
    sprintf(txt1, "Delay_e%d", index); 
    s= cfg_get(NULL, txt1, "5");
    i=now[index]+atoi(s);
    free(s);
    if (time(NULL)<=i)
      return 0;   // no more then 5/Delay_eX seconds after last check?
  }
  time(&now[index]);                      // for Mailbox #index
  /*
    Build the filename from the config
  */
  qprintf(buffer, sizeof(buffer), "Mailbox%d", index);
  fnp1=cfg_get(NULL, buffer, NULL);
  if (fnp1==NULL || *fnp1=='\0') {
    cfgmbx[index]=FALSE;                  // There is now entry for Mailbox #index
  }
  v1=mbxnum[index];
  /*
    Open the file
  */
  if (cfgmbx[index]==TRUE) {
  /*
    Check the last touch of mailbox. Changed?
  */
    rc=stat(fnp1, &fst);
    if ( rc != 0 ) {
      /* 
        is it pop3, imap4 or nntp? 
      */
      rc = Mail_pop_imap_news(fnp1, num, unseen);
      if (rc == 0) {
            free(fnp1);
			return 0;
		}
      else
	cfgmbx[index] = FALSE; /* don't try again */
	
      error ("Error getting stat of Mailbox%d", index);
      return (-1);
    }
    if ( mbxlt[index] != fst.st_mtime ) {
      mbxlt[index]=fst.st_mtime;

      fstr=fopen(fnp1,"r");
      if (fstr != NULL) {
        txt=&txt1[0];
        last_line_blank1=TRUE;
        v1=0;

        while ( ( fgets ( txt1, 100, fstr ) ) != NULL ) {
          txt1[strlen(txt1)-1]='\0';                 // cut the newline
       	  /*
	    Is there a "From ..." line. Count only, if a blank line was directly before this
	  */
          if ( strncmp (txt1, "From ", 5 ) == 0 ) {
            if ( last_line_blank1 == TRUE ) {
              v1++;
              last_line_blank1 = FALSE;
            }
          }
          if ( strlen (txt1) == 0 ) {
  	    last_line_blank1 = TRUE;
          }
          else {
  	    last_line_blank1 = FALSE;
          }
        }
        fclose (fstr);
      }
    }
  }
  free(fnp1);
  /* FIXME look at the Status of Mails */
  *unseen = v1 - mbxnum[index];
  if (*unseen < 0)
    *unseen = 0;
  mbxnum[index]=v1;
  *num=v1;
  return (0);
}