/*********************************************************************** * * SHOWLOG.C - Nagios Log File CGI * * * This CGI program will display the contents of the Nagios * log file. * * License: * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program 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 "../include/config.h" #include "../include/common.h" #include "../include/objects.h" #include "../include/getcgi.h" #include "../include/cgiutils.h" #include "../include/cgiauth.h" extern char main_config_file[MAX_FILENAME_LENGTH]; extern char url_html_path[MAX_FILENAME_LENGTH]; extern char url_images_path[MAX_FILENAME_LENGTH]; extern char url_stylesheets_path[MAX_FILENAME_LENGTH]; extern int enable_splunk_integration; void document_header(int); void document_footer(void); int process_cgivars(void); authdata current_authdata; int display_log(void); char log_file_to_use[MAX_FILENAME_LENGTH] = ""; int log_archive = 0; int use_lifo = TRUE; int embedded = FALSE; int display_header = TRUE; int display_frills = TRUE; int display_timebreaks = TRUE; int main(void) { char temp_buffer[MAX_INPUT_BUFFER]; /* get the CGI variables passed in the URL */ process_cgivars(); /* reset internal variables */ reset_cgi_vars(); cgi_init(document_header, document_footer, READ_ALL_OBJECT_DATA, 0); document_header(TRUE); /* get authentication information */ get_authentication_information(¤t_authdata); /* determine what log file we should be using */ get_log_archive_to_use(log_archive, log_file_to_use, (int)sizeof(log_file_to_use)); if(display_header == TRUE) { /* begin top table */ printf("\n"); printf("\n"); /* left column of top table - info box */ printf("\n"); /* middle column of top table - log file navigation options */ printf("\n"); /* right hand column of top row */ printf("\n"); /* end of top table */ printf("\n"); printf("
\n"); display_info_table((log_rotation_method == LOG_ROTATION_NONE || log_archive == 0) ? "Current Event Log" : "Archived Event Log", FALSE, ¤t_authdata); printf("\n"); snprintf(temp_buffer, sizeof(temp_buffer) - 1, "%s?%s", SHOWLOG_CGI, (use_lifo == FALSE) ? "oldestfirst&" : ""); temp_buffer[sizeof(temp_buffer) - 1] = '\x0'; display_nav_table(temp_buffer, log_archive); printf("\n"); printf("
\n", SHOWLOG_CGI); printf("\n", log_archive); printf("\n"); printf(""); printf("", (use_lifo == FALSE) ? "checked" : ""); printf("\n"); printf(""); printf("\n"); printf("\n"); /* display context-sensitive help */ printf("\n"); printf("\n"); printf("\n"); printf("
Older Entries First:
\n"); display_context_help(CONTEXTHELP_LOG); printf("
\n"); printf("
\n"); printf("
\n"); printf("

\n"); } /* display the contents of the log file */ display_log(); document_footer(); /* free allocated memory */ free_memory(); return OK; } void document_header(int use_stylesheet) { char date_time[MAX_DATETIME_LENGTH]; time_t current_time; time_t expire_time; printf("Cache-Control: no-store\r\n"); printf("Pragma: no-cache\r\n"); time(¤t_time); get_time_string(¤t_time, date_time, (int)sizeof(date_time), HTTP_DATE_TIME); printf("Last-Modified: %s\r\n", date_time); expire_time = (time_t)0L; get_time_string(&expire_time, date_time, (int)sizeof(date_time), HTTP_DATE_TIME); printf("Expires: %s\r\n", date_time); printf("Content-type: text/html; charset=utf-8\r\n\r\n"); if(embedded == TRUE) return; printf("\n"); printf("\n"); printf("\n", url_images_path); printf("\n"); printf("Nagios Log File\n"); printf("\n"); if(use_stylesheet == TRUE) { printf("\n", url_stylesheets_path, COMMON_CSS); printf("\n", url_stylesheets_path, SHOWLOG_CSS); } printf("\n"); printf("\n"); /* include user SSI header */ include_ssi_files(SHOWLOG_CGI, SSI_HEADER); return; } void document_footer(void) { if(embedded == TRUE) return; /* include user SSI footer */ include_ssi_files(SHOWLOG_CGI, SSI_FOOTER); printf("\n"); printf("\n"); return; } int process_cgivars(void) { char **variables; int error = FALSE; int x; variables = getcgivars(); for(x = 0; variables[x]; x++) { /* do some basic length checking on the variable identifier to prevent buffer overflows */ if(strlen(variables[x]) >= MAX_INPUT_BUFFER - 1) { continue; } /* we found the archive argument */ else if(!strcmp(variables[x], "archive")) { x++; if(variables[x] == NULL) { error = TRUE; break; } log_archive = atoi(variables[x]); if(log_archive < 0) log_archive = 0; } /* we found the order argument */ else if(!strcmp(variables[x], "oldestfirst")) { use_lifo = FALSE; } /* we found the embed option */ else if(!strcmp(variables[x], "embedded")) embedded = TRUE; /* we found the noheader option */ else if(!strcmp(variables[x], "noheader")) display_header = FALSE; /* we found the nofrills option */ else if(!strcmp(variables[x], "nofrills")) display_frills = FALSE; /* we found the notimebreaks option */ else if(!strcmp(variables[x], "notimebreaks")) display_timebreaks = FALSE; /* we received an invalid argument */ else error = TRUE; } /* free memory allocated to the CGI variables */ free_cgivars(variables); return error; } /* display the contents of the log file */ int display_log(void) { char *input = NULL; char image[MAX_INPUT_BUFFER]; char image_alt[MAX_INPUT_BUFFER]; time_t t; char *temp_buffer = NULL; char date_time[MAX_DATETIME_LENGTH]; int error = FALSE; mmapfile *thefile = NULL; char last_message_date[MAX_INPUT_BUFFER] = ""; char current_message_date[MAX_INPUT_BUFFER] = ""; struct tm *time_ptr = NULL; /* check to see if the user is authorized to view the log file */ if(is_authorized_for_system_information(¤t_authdata) == FALSE) { printf("
\n"); printf("
It appears as though you do not have permission to view the log file...


\n"); printf("
If you believe this is an error, check the HTTP server authentication requirements for accessing this CGI
and check the authorization options in your CGI configuration file.
\n"); printf("
\n"); return ERROR; } error = FALSE; if(use_lifo == TRUE) { error = read_file_into_lifo(log_file_to_use); if(error != LIFO_OK) { if(error == LIFO_ERROR_MEMORY) { printf("

Not enough memory to reverse log file - displaying log in natural order...

"); error = FALSE; } else error = TRUE; use_lifo = FALSE; } else error = FALSE; } if(use_lifo == FALSE) { if((thefile = mmap_fopen(log_file_to_use)) == NULL) { printf("
\n"); printf("

Error: Could not open log file '%s' for reading!

", log_file_to_use); printf("
\n"); error = TRUE; } } if(error == FALSE) { printf("

\n"); while(1) { free(input); if(use_lifo == TRUE) { if((input = pop_lifo()) == NULL) break; } else if((input = mmap_fgets(thefile)) == NULL) break; strip(input); if(strstr(input, " starting...")) { strcpy(image, START_ICON); strcpy(image_alt, START_ICON_ALT); } else if(strstr(input, " shutting down...")) { strcpy(image, STOP_ICON); strcpy(image_alt, STOP_ICON_ALT); } else if(strstr(input, "Bailing out")) { strcpy(image, STOP_ICON); strcpy(image_alt, STOP_ICON_ALT); } else if(strstr(input, " restarting...")) { strcpy(image, RESTART_ICON); strcpy(image_alt, RESTART_ICON_ALT); } else if(strstr(input, "HOST ALERT:") && strstr(input, ";DOWN;")) { strcpy(image, HOST_DOWN_ICON); strcpy(image_alt, HOST_DOWN_ICON_ALT); } else if(strstr(input, "HOST ALERT:") && strstr(input, ";UNREACHABLE;")) { strcpy(image, HOST_UNREACHABLE_ICON); strcpy(image_alt, HOST_UNREACHABLE_ICON_ALT); } else if(strstr(input, "HOST ALERT:") && (strstr(input, ";RECOVERY;") || strstr(input, ";UP;"))) { strcpy(image, HOST_UP_ICON); strcpy(image_alt, HOST_UP_ICON_ALT); } else if(strstr(input, "HOST NOTIFICATION:")) { strcpy(image, HOST_NOTIFICATION_ICON); strcpy(image_alt, HOST_NOTIFICATION_ICON_ALT); } else if(strstr(input, "SERVICE ALERT:") && strstr(input, ";CRITICAL;")) { strcpy(image, CRITICAL_ICON); strcpy(image_alt, CRITICAL_ICON_ALT); } else if(strstr(input, "SERVICE ALERT:") && strstr(input, ";WARNING;")) { strcpy(image, WARNING_ICON); strcpy(image_alt, WARNING_ICON_ALT); } else if(strstr(input, "SERVICE ALERT:") && strstr(input, ";UNKNOWN;")) { strcpy(image, UNKNOWN_ICON); strcpy(image_alt, UNKNOWN_ICON_ALT); } else if(strstr(input, "SERVICE ALERT:") && (strstr(input, ";RECOVERY;") || strstr(input, ";OK;"))) { strcpy(image, OK_ICON); strcpy(image_alt, OK_ICON_ALT); } else if(strstr(input, "SERVICE NOTIFICATION:")) { strcpy(image, NOTIFICATION_ICON); strcpy(image_alt, NOTIFICATION_ICON_ALT); } else if(strstr(input, "SERVICE EVENT HANDLER:")) { strcpy(image, SERVICE_EVENT_ICON); strcpy(image_alt, SERVICE_EVENT_ICON_ALT); } else if(strstr(input, "HOST EVENT HANDLER:")) { strcpy(image, HOST_EVENT_ICON); strcpy(image_alt, HOST_EVENT_ICON_ALT); } else if(strstr(input, "EXTERNAL COMMAND:")) { strcpy(image, EXTERNAL_COMMAND_ICON); strcpy(image_alt, EXTERNAL_COMMAND_ICON_ALT); } else if(strstr(input, "PASSIVE SERVICE CHECK:")) { strcpy(image, PASSIVE_ICON); strcpy(image_alt, "Passive Service Check"); } else if(strstr(input, "PASSIVE HOST CHECK:")) { strcpy(image, PASSIVE_ICON); strcpy(image_alt, "Passive Host Check"); } else if(strstr(input, "LOG ROTATION:")) { strcpy(image, LOG_ROTATION_ICON); strcpy(image_alt, LOG_ROTATION_ICON_ALT); } else if(strstr(input, "active mode...")) { strcpy(image, ACTIVE_ICON); strcpy(image_alt, ACTIVE_ICON_ALT); } else if(strstr(input, "standby mode...")) { strcpy(image, STANDBY_ICON); strcpy(image_alt, STANDBY_ICON_ALT); } else if(strstr(input, "SERVICE FLAPPING ALERT:") && strstr(input, ";STARTED;")) { strcpy(image, FLAPPING_ICON); strcpy(image_alt, "Service started flapping"); } else if(strstr(input, "SERVICE FLAPPING ALERT:") && strstr(input, ";STOPPED;")) { strcpy(image, FLAPPING_ICON); strcpy(image_alt, "Service stopped flapping"); } else if(strstr(input, "SERVICE FLAPPING ALERT:") && strstr(input, ";DISABLED;")) { strcpy(image, FLAPPING_ICON); strcpy(image_alt, "Service flap detection disabled"); } else if(strstr(input, "HOST FLAPPING ALERT:") && strstr(input, ";STARTED;")) { strcpy(image, FLAPPING_ICON); strcpy(image_alt, "Host started flapping"); } else if(strstr(input, "HOST FLAPPING ALERT:") && strstr(input, ";STOPPED;")) { strcpy(image, FLAPPING_ICON); strcpy(image_alt, "Host stopped flapping"); } else if(strstr(input, "HOST FLAPPING ALERT:") && strstr(input, ";DISABLED;")) { strcpy(image, FLAPPING_ICON); strcpy(image_alt, "Host flap detection disabled"); } else if(strstr(input, "SERVICE DOWNTIME ALERT:") && strstr(input, ";STARTED;")) { strcpy(image, SCHEDULED_DOWNTIME_ICON); strcpy(image_alt, "Service entered a period of scheduled downtime"); } else if(strstr(input, "SERVICE DOWNTIME ALERT:") && strstr(input, ";STOPPED;")) { strcpy(image, SCHEDULED_DOWNTIME_ICON); strcpy(image_alt, "Service exited a period of scheduled downtime"); } else if(strstr(input, "SERVICE DOWNTIME ALERT:") && strstr(input, ";CANCELLED;")) { strcpy(image, SCHEDULED_DOWNTIME_ICON); strcpy(image_alt, "Service scheduled downtime has been cancelled"); } else if(strstr(input, "HOST DOWNTIME ALERT:") && strstr(input, ";STARTED;")) { strcpy(image, SCHEDULED_DOWNTIME_ICON); strcpy(image_alt, "Host entered a period of scheduled downtime"); } else if(strstr(input, "HOST DOWNTIME ALERT:") && strstr(input, ";STOPPED;")) { strcpy(image, SCHEDULED_DOWNTIME_ICON); strcpy(image_alt, "Host exited a period of scheduled downtime"); } else if(strstr(input, "HOST DOWNTIME ALERT:") && strstr(input, ";CANCELLED;")) { strcpy(image, SCHEDULED_DOWNTIME_ICON); strcpy(image_alt, "Host scheduled downtime has been cancelled"); } else { strcpy(image, INFO_ICON); strcpy(image_alt, INFO_ICON_ALT); } temp_buffer = strtok(input, "]"); t = (temp_buffer == NULL) ? 0L : strtoul(temp_buffer + 1, NULL, 10); time_ptr = localtime(&t); strftime(current_message_date, sizeof(current_message_date), "%B %d, %Y %H:00\n", time_ptr); current_message_date[sizeof(current_message_date) - 1] = '\x0'; if(strcmp(last_message_date, current_message_date) != 0 && display_timebreaks == TRUE) { printf("
\n"); printf("
\n"); printf(""); printf(""); printf("", current_message_date); printf(""); printf("

%s
\n"); printf("
\n"); printf("
\n"); strncpy(last_message_date, current_message_date, sizeof(last_message_date)); last_message_date[sizeof(last_message_date) - 1] = '\x0'; } get_time_string(&t, date_time, (int)sizeof(date_time), SHORT_DATE_TIME); strip(date_time); temp_buffer = strtok(NULL, "\n"); if(display_frills == TRUE) printf("%s", url_images_path, image, image_alt, image_alt); printf("[%s] %s", date_time, (temp_buffer == NULL) ? "" : html_encode(temp_buffer, FALSE)); if(enable_splunk_integration == TRUE) { printf("   "); display_splunk_generic_url(temp_buffer, 2); } printf("
\n"); } printf("

\n"); printf("
\n"); free(input); if(use_lifo == FALSE) mmap_fclose(thefile); } if(use_lifo == TRUE) free_lifo_memory(); return OK; }