/* $Id$ * $URL$ * * Plugin to check POP3 mail accounts * * Copyright (C) 2004 Javi Garcia Dominguez (aka Stolz) * Based on code from pop3check (C) 1999 http://sourceforge.net/projects/pop3check * Simon Liddington is the pop3check current maintainer. * The pop3check original author is Steven Radack . * * Copyright (C) 2004 The LCD4Linux Team * * This file is a pluging for 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. * */ #include "config.h" #include #include #include #include "debug.h" #include "plugin.h" #include "cfg.h" /*added */ #include #include /*#include */ #include #include /*#include */ #include #ifdef WITH_DMALLOC #include #endif /*POP 3 */ #define POPERR "-ERR" #define LOCKEDERR "-ERR account is locked by another session or for maintenance, try again." #define BUFSIZE 8192 #define POP3PORT 110 #define MAX_NUM_ACCOUNTS 3 struct check { int id; char *username; char *password; char *server; int port; int messages; struct check *next; }; /************************ PROTOTYPES ********************************/ /* list */ static struct check *check_node_alloc(void); static void check_node_add(struct check **head, struct check *new_check); static void check_destroy(struct check **head); /* pop3 */ static void pop3_check_messages(struct check *hi, int verbose); static void pop3_recv_crlf_terminated(int sockfd, char *buf, int size); /* socket */ static int tcp_connect(struct check *hi); /************************ GLOBAL ***********************************/ static char Section[] = "Plugin:POP3"; static struct check *head = NULL; /********************************************************************/ /************************ LIST ***********************************/ static struct check *check_node_alloc(void) { struct check *new_check; new_check = (struct check *) calloc(1, sizeof(struct check)); if (new_check == NULL) { error("[POP3] out of memory\n"); } return new_check; } static void check_node_add(struct check **head, struct check *new_check) { new_check->next = *head; *head = new_check; } static void check_destroy(struct check **head) { struct check *iter; while (*head) { iter = (*head)->next; free((*head)->username); free((*head)->password); free((*head)->server); free(*head); *head = iter; } *head = NULL; } /************************ POP3 ********************************/ static void pop3_check_messages(struct check *hi, int verbose) { char buf[BUFSIZE]; int sockfd; if ((sockfd = tcp_connect(hi)) < 0) { hi->messages = -1; return; } pop3_recv_crlf_terminated(sockfd, buf, sizeof(buf)); /* server greeting */ if (verbose) info("[POP3] %s -> %s\n", hi->server, buf); snprintf(buf, sizeof(buf), "USER %s\r\n", hi->username); write(sockfd, buf, strlen(buf)); buf[strlen(buf) - 1] = '\0'; if (verbose) info("[POP3] %s <- %s\n", hi->server, buf); pop3_recv_crlf_terminated(sockfd, buf, sizeof(buf)); /* response from USER command */ if (verbose) info("[POP3] %s -> %s\n", hi->server, buf); snprintf(buf, sizeof(buf), "PASS %s\r\n", hi->password); write(sockfd, buf, strlen(buf)); if (verbose) info("[POP3] %s <- PASS ???\n", hi->server); pop3_recv_crlf_terminated(sockfd, buf, sizeof(buf)); /* response from PASS command */ if (verbose) info("[POP3] %s -> %s\n", hi->server, buf); if (strncmp(buf, LOCKEDERR, strlen(LOCKEDERR)) == 0) { hi->messages = -2; close(sockfd); return; } if (strncmp(buf, POPERR, strlen(POPERR)) == 0) { error("[POP3] error logging into %s\n", hi->server); error("[POP3] server responded: %s\n", buf); hi->messages = -1; close(sockfd); return; } snprintf(buf, sizeof(buf), "STAT\r\n"); write(sockfd, buf, strlen(buf)); if (verbose) info("[POP3] %s <- STAT\n", hi->server); pop3_recv_crlf_terminated(sockfd, buf, sizeof(buf)); /* response from PASS command */ if (verbose) info("[POP3] %s -> %s\n", hi->server, buf); strtok(buf, " "); hi->messages = atoi(strtok(NULL, " ")); snprintf(buf, sizeof(buf), "QUIT\r\n"); write(sockfd, buf, strlen(buf)); if (verbose) info("[POP3] %s <- QUIT\n", hi->server); pop3_recv_crlf_terminated(sockfd, buf, sizeof(buf)); /* response from QUIT command */ if (verbose) info("[POP3] %s -> %s\n", hi->server, buf); close(sockfd); } static void pop3_recv_crlf_terminated(int sockfd, char *buf, int size) { /* receive one line server responses terminated with CRLF */ char *pos; int bytes = 0; memset(buf, 0, size); while ((pos = strstr(buf, "\r\n")) == NULL) bytes += read(sockfd, buf + bytes, size - bytes); *pos = '\0'; } /************************ SOCKET ********************************/ static int tcp_connect(struct check *hi) { struct sockaddr_in addr; struct hostent *he = gethostbyname(hi->server); int sockfd; if (hi == NULL) return -1; if (!he) { error("[POP3] Failed to lookup %s\n", hi->server); return (-1); } memset((char *) &addr, 0, sizeof(struct sockaddr_in)); addr.sin_family = AF_INET; memcpy(&(addr.sin_addr.s_addr), he->h_addr, he->h_length); addr.sin_port = htons(hi->port); if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) { perror("socket()"); return (-1); } if (connect(sockfd, (struct sockaddr *) &addr, sizeof(struct sockaddr)) < 0) { perror("connect()"); close(sockfd); return (-1); } return (sockfd); } static int getConfig(void) { struct check *node = NULL; int i, n = 0; char *user = (char *) calloc(1, sizeof("user") + sizeof(int)); char *password = (char *) calloc(1, sizeof("password") + sizeof(int)); char *server = (char *) calloc(1, sizeof("server") + sizeof(int)); char *port = (char *) calloc(1, sizeof("port") + sizeof(int)); for (i = 1; i <= MAX_NUM_ACCOUNTS; i++) { char *x; sprintf(user, "user%d", i); sprintf(password, "password%d", i); sprintf(server, "server%d", i); sprintf(port, "port%d", i); x = cfg_get(Section, server, ""); if (*x == '\0') { info("[POP3] No '%s.%s' entry from %s, disabling POP3 account #%d", Section, server, cfg_source(), i); free(x); } else { node = check_node_alloc(); node->id = i; node->server = x; node->messages = 0; node->next = NULL; x = cfg_get(Section, user, ""); if (*x == '\0') { info("[POP3] No '%s.%s' entry from %s, disabling POP3 account #%d", Section, user, cfg_source(), i); free(x); } else { node->username = x; x = cfg_get(Section, password, ""); if (*x == '\0') { info("[POP3] No '%s.%s' entry from %s, disabling POP3 account #%d", Section, password, cfg_source(), i); free(x); } else { node->password = x; if (cfg_number(Section, port, POP3PORT, 1, 65536, &node->port) < 1) { info("[POP3] No '%s.%s' entry from %s, %d will be used for account #%d", Section, port, cfg_source(), POP3PORT, i); } check_node_add(&head, node); n++; } } } } return (n); } static int configure_pop3(void) { static int configured = 0; int n; if (configured != 0) return configured; n = getConfig(); /* by now, head should point to a list of all our accounts */ if (head) { info("[POP3] %d POP3 accounts have been succesfully defined", n); configured = 1; } else { configured = -1; } return configured; } static void my_POP3check(RESULT * result, RESULT * check) { double param = R2N(check); struct check *node = NULL; double value; if (configure_pop3() < 0) { value = -1; SetResult(&result, R_NUMBER, &value); return; } for (node = head; node; node = node->next) { if (node->id == param) break; } if (node == NULL) { /*Inexistent account */ value = -1; } else { pop3_check_messages(node, 0); value = (double) node->messages; } SetResult(&result, R_NUMBER, &value); } int plugin_init_pop3(void) { AddFunction("POP3check", 1, my_POP3check); return 0; } void plugin_exit_pop3(void) { check_destroy(&head); } ef='#n195'>195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 
/* $Id: plugin_uptime.c,v 1.1 2004/05/22 18:30:02 reinelt Exp $
 *
 * plugin for uptime
 *
 * Copyright 2003 Michael Reinelt <reinelt@eunet.at>
 * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.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: plugin_uptime.c,v $
 * Revision 1.1  2004/05/22 18:30:02  reinelt
 *
 * added plugin 'uptime'
 *
 */

/* 
 * exported functions:
 *
 * int plugin_init_uptime (void)
 *  adds functions for uptime
 *
 */


#include "config.h"

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

#include "debug.h"
#include "plugin.h"

static int fd = -2;


static char *itoa(char* buffer, size_t size, unsigned int value)
{
  char *p;
 
  // sanity checks
  if (buffer==NULL || size<2) return (NULL);
  
  // p points to last char
  p = buffer+size-1;
  
  // set terminating zero
  *p='\0';
  
  do {
    *--p = value%10 + '0';
    value = value/10;
  } while (value!=0 && p>buffer);
  
  return p;
} 


char *struptime (unsigned int uptime, char *format) 
{
  static char string[256];
  const char *src;
  char *dst;
  int len, size;
  
  src = format;
  dst = string;
  len = 0;
  
  // leave room for terminating zero 
  size = sizeof(string) - 1;
  
  while (len < size) {
    
    if (*src == '%') {
      src++;

      if (strchr ("sSmMhHd", *src) != NULL) {
	char buffer[12], *s;
	unsigned int value = 0;
	int leading_zero = 0;
	switch (*src++) {
	case 's':
	  value = uptime;
	  break;
	case 'S':
	  value = uptime % 60;
	  leading_zero = 1;
	  break;
	case 'm':
	  value = uptime / 60;
	  break;
	case 'M':
	  value = (uptime / 60) % 60;
	  leading_zero = 1;
	  break;
	case 'h':
	  value = uptime / 60 / 60;
	  break;
	case 'H':
	  value = (uptime / 60 / 60) % 24;
	  leading_zero = 1;
	  break;
	case 'd':
	  value = uptime / 60 / 60 / 24;
	  break;
	}
	
	if (leading_zero && value < 10) {
	  len++;
	  *dst++ = '0';
	}

	s = itoa (buffer, sizeof(buffer), value);
	while (len < size && *s != '\0') {
	  len++;
	  *dst++ = *s++;
	}

      } else if (*src == '%') {
	len++;
	*dst++ = '%';

      } else {
	len += 2;
	*dst++ = '%';
	*dst++ = *src++;
      }

    } else {
      len++;
      *dst++ = *src;
      if (*src++ == '\0') break;
    }
  }
  
  // enforce terminating zero
  if (len >= size && *(dst-1) != '\0') {
    len++;
    *dst = '\0';
  }

  return string;
}


double getuptime (void)
{
  char buffer[36];
  int i;
      
  if (fd == -2) fd = open ("/proc/uptime", O_RDONLY);
  if (fd < 0) return -1;

  lseek(fd, 0, SEEK_SET);

  i = read (fd, buffer, sizeof(buffer) - 1);
  if (i < 0) return -1;

  buffer[i-1] = '\0';
  
  // ignore the 2nd value from /proc/uptime
  return strtod(buffer, NULL);
}


static void my_uptime (RESULT *result, int argc, RESULT *argv[])
{
  int age;
  static double uptime = 0.0;
  static struct timeval last_value;
  struct timeval now;

  if (argc>1) {
    error ("uptime(): wrong number of parameters");
    SetResult(&result, R_STRING, ""); 
    return;
  }

  gettimeofday(&now,NULL);
  
  age = (now.tv_sec - last_value.tv_sec)*1000 + (now.tv_usec - last_value.tv_usec)/1000;
  // reread every 100 msec only
  if (fd == -2 || age == 0 || age > 100) {
    uptime = getuptime();
    if (uptime < 0.0) {
      error ("parse(/proc/uptime) failed!");
      SetResult(&result, R_STRING, "");
      return;
    }

    last_value = now;
  }
  
  if (argc == 0) {
    SetResult (&result, R_NUMBER, &uptime);
  } else {
    SetResult (&result, R_STRING, struptime(uptime, R2S(argv[0])));
  }
  
  return;
  
}

int plugin_init_uptime (void)
{
  AddFunction ("uptime", -1, my_uptime);
  return 0;
}

void plugin_exit_uptime(void) 
{
  if (fd > 0) close(fd);
  fd = -2;
}
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