git.maemo.org Git - monky/blob - src/users.c

   1 /* Conky, a system monitor, based on torsmo
   2  *
   3  * Any original torsmo code is licensed under the BSD license
   4  *
   5  * All code written since the fork of torsmo is licensed under the GPL
   6  *
   7  * Please see COPYING for details
   8  *
   9  * Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
  10  * Copyright (c) 2005-2008 Brenden Matthews, Philip Kovacs, et. al.
  11  *      (see AUTHORS)
  12  * All rights reserved.
  13  *
  14  * This program is free software: you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation, either version 3 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25  *
  26  * $Id$
  27  *
  28  */
  29
  30 #include "conky.h"
  31 #include <utmp.h>
  32 #include <time.h>
  33
  34 static void user_name(char *ptr)
  35 {
  36         const struct utmp *usr = 0;
  37
  38         setutent();
  39         while ((usr = getutent()) != NULL) {
  40                 if (usr->ut_type == USER_PROCESS) {
  41                         strncat(ptr, usr->ut_name, 9);
  42                 }
  43         }
  44 }
  45 static void user_num(int *ptr)
  46 {
  47         const struct utmp *usr;
  48         int users_num = 0;
  49
  50         setutent();
  51         while ((usr = getutent()) != NULL) {
  52                 if (usr->ut_type == USER_PROCESS) {
  53                         ++users_num;
  54                 }
  55         }
  56         *ptr = users_num;
  57 }
  58 static void user_term(char *ptr)
  59 {
  60         const struct utmp *usr;
  61
  62         setutent();
  63         while ((usr = getutent()) != NULL) {
  64                 if (usr->ut_type == USER_PROCESS) {
  65                         strncat(ptr, usr->ut_line, 13);
  66                 }
  67         }
  68 }
  69 static void user_time(char *ptr)
  70 {
  71         const struct utmp *usr;
  72         time_t log_in, real, diff;
  73         struct tm *dtime;
  74         char buf[512] = "";
  75
  76         setutent();
  77         while ((usr = getutent()) != NULL) {
  78                 if (usr->ut_type == USER_PROCESS) {
  79                         log_in = usr->ut_time;
  80                         time(&real);
  81                         diff = difftime(real, log_in);
  82                         dtime = localtime(&diff);
  83                         dtime->tm_year = dtime->tm_year - 70;
  84                         dtime->tm_mon = dtime->tm_mon - 1;
  85                         dtime->tm_mday = dtime->tm_mday - 1;
  86                         if (dtime->tm_year > 0) {
  87                                 strftime(buf, 512, "%yy %mm %dd %Hh %Mm", dtime);
  88                         } else if (dtime->tm_mon > 0) {
  89                                 strftime(buf, 512, "%mm %dd %Hh %Mm", dtime);
  90                         } else if (dtime->tm_mday > 0) {
  91                                 strftime(buf, 512, "%dd %Hh %Mm", dtime);
  92                         } else if (dtime->tm_hour > 0) {
  93                                 strftime(buf, 512, "%Hh %Mm", dtime);
  94                         } else if (dtime->tm_min > 0) {
  95                                 strftime(buf, 512, "%Mm", dtime);
  96                         }
  97                         strncat(ptr, buf, 512);
  98                 }
  99         }
 100 }
 101
 102 static void users_alloc(struct information *ptr)
 103 {
 104         if (ptr->users.names == NULL) {
 105                 ptr->users.names = malloc(text_buffer_size);
 106
 107         }
 108         if (ptr->users.terms == NULL) {
 109                 ptr->users.terms = malloc(text_buffer_size);
 110         }
 111         if (ptr->users.times == NULL) {
 112                 ptr->users.times = malloc(text_buffer_size);
 113         }
 114 }
 115
 116 void update_users(void)
 117 {
 118         struct information *current_info = &info;
 119         char temp[512] = "";
 120         int t;
 121         users_alloc(current_info);
 122         user_name(temp);
 123         if (temp != NULL) {
 124                 if (current_info->users.names) {
 125                         free(current_info->users.names);
 126                         current_info->users.names = 0;
 127                 }
 128                 current_info->users.names = malloc(text_buffer_size);
 129                 strncpy(current_info->users.names, temp, text_buffer_size);
 130         } else {
 131                 if (current_info->users.names) {
 132                         free(current_info->users.names);
 133                         current_info->users.names = 0;
 134                 }
 135                 current_info->users.names = malloc(text_buffer_size);
 136                 strncpy(current_info->users.names, "broken", text_buffer_size);
 137         }
 138         user_num(&t);
 139         if (t != 0) {
 140                 if (current_info->users.number) {
 141                         current_info->users.number = 0;
 142                 }
 143                 current_info->users.number = t;
 144         } else {
 145                 current_info->users.number = 0;
 146         }
 147         temp[0] = 0;
 148         user_term(temp);
 149         if (temp != NULL) {
 150                 if (current_info->users.terms) {
 151                         free(current_info->users.terms);
 152                         current_info->users.terms = 0;
 153                 }
 154                 current_info->users.terms = malloc(text_buffer_size);
 155                 strncpy(current_info->users.terms, temp, text_buffer_size);
 156         } else {
 157                 if (current_info->users.terms) {
 158                         free(current_info->users.terms);
 159                         current_info->users.terms = 0;
 160                 }
 161                 current_info->users.terms = malloc(text_buffer_size);
 162                 strncpy(current_info->users.terms, "broken", text_buffer_size);
 163         }
 164         user_time(temp);
 165         if (temp != NULL) {
 166                 if (current_info->users.times) {
 167                         free(current_info->users.times);
 168                         current_info->users.times = 0;
 169                 }
 170                 current_info->users.times = malloc(text_buffer_size);
 171                 strncpy(current_info->users.times, temp, text_buffer_size);
 172         } else {
 173                 if (current_info->users.times) {
 174                         free(current_info->users.times);
 175                         current_info->users.times = 0;
 176                 }
 177                 current_info->users.times = malloc(text_buffer_size);
 178                 strncpy(current_info->users.times, "broken", text_buffer_size);
 179         }
 180 }