en cours...

ping-report/src/Contre-rendu

@@ -0,0 +1,31 @@
+LAWSON-LARTEGO EMMANUELLA
+Nathan Bouzon
+
+ping =-report.c
+Compléxité cyclomatique
+main/ 4
+
+db-sqlite.c
+Compléxité cyclomatique
+db_connect/ 1
+db_disconnect/ 1
+insert_hourly_report/ 1
+
+Utils.c
+Compléxité cyclomatique
+write_pid_file/ 2
+remove_file/ 1
+
+daemon.c
+Compléxité cyclomatique
+create_daemon/ 4
+ping_request/ 2
+send_check/ 4
+check_keep_working/ 4
+daemon_work/ 2
+
+Stats.c
+Compléxité cyclomatique
+get_ping_from_temp_log/ 11
+write_ping_log / 4
+set_stats_ping / ??

ping-report/src/statsmodif.c

@@ -0,0 +1,250 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <regex.h>
+
+#include "../include/utils.h"
+#include "../include/stats.h"
+#include "../include/db-sqlite.h"
+
+/*
+    -- get_ping_from_temp_log --
+    Desc :
+        Function which get the ping from a temp log containing the last ping did by the program
+    In-param :
+        None
+    Out-param :
+        None
+    Return value :
+        Ping value as a string or NULL if an error occured
+*/
+/*@null@*/char* get_ping_from_temp_log(){
+
+    /* Variables */
+    FILE* fd = NULL;
+    char* read_line = NULL;
+    size_t n = 0;
+    size_t nmatch = 2;
+    regex_t *p_reg;
+    regmatch_t* pmatch;
+    char* ping = NULL;
+    int start;
+    int end;
+    size_t size_ping;
+
+    /* regex struct memory allocation */
+    p_reg = (regex_t *) malloc(sizeof(*p_reg));
+    /*
+    if (p_reg== NULL){
+        return ping;  /NULL/ 
+    }
+    */
+
+    /* Open ping log file */
+    fd = fopen("/var/log/ping-report/last-ping.log","r");
+    if(fd == NULL || p_reg == NULL){ //++
+        free(p_reg);
+        return ping; /* NULL */
+    }
+
+    /* Construct regex to get ping from log file */
+    if(regcomp(p_reg,"time=(.*) ms",REG_EXTENDED) != 0 && p_reg != NULL){
+        free(p_reg);
+        (void) fclose(fd);
+        return ping; /* NULL */
+    }
+
+    /* match info memory allocation */
+    pmatch = malloc(sizeof(*pmatch) * nmatch);
+    if(pmatch == NULL){
+        (void) fclose(fd);
+        regfree(p_reg);
+        free(p_reg);
+        return ping; /* NULL */
+    }
+
+    /* Read file */
+    //while(getline(&read_line,&n,fd) != -1){
+        
+        if(read_line == NULL){
+            break;
+        }
+
+        /* Exec regex to find ping */
+
+        if(regexec(p_reg,read_line,nmatch,pmatch,0) == 0){
+
+            /* Extract ping position from read line */
+            start = (int) pmatch[1].rm_so;
+            end = (int) pmatch[1].rm_eo;
+            size_ping = (size_t) (end - start);
+
+            /* ping string memory allocation */
+            ping = malloc(sizeof(char) * (size_ping+2));
+
+         /* if(ping == NULL){
+                free(read_line);
+                read_line = NULL;
+                n = 0;
+                break;
+            } */
+
+           
+
+            /* Create ping string */
+            (void) strncpy(ping, &read_line[start], size_ping);
+            ping[size_ping]='\n';
+            ping[size_ping+1]='\0';
+
+            /* Free memory */
+            free(read_line);
+            read_line = NULL;
+            n = 0;
+            break;
+        }
+
+        free(read_line);
+        read_line = NULL;
+        n = 0;
+    //}
+
+    /* free allocated memory */
+    regfree(p_reg);
+    free(p_reg);
+    free(pmatch);
+ 
+
+    (void) fclose(fd);
+
+    /* ping may be null, then it must mean that the ping request was lost */
+    return ping;
+}
+
+/*
+    -- write_ping_log --
+    Desc :
+        Function which write a given ping in log file
+    In-param :
+        new_ping : string value of a ping
+    Out-param :
+        None
+    Return value :
+        None
+*/
+void write_ping_log(char* new_ping){
+    
+    /* Variables */
+    FILE* fd;
+
+    /* Open log file */
+    fd = fopen("/var/log/ping-report/all-ping.log","a+");
+    
+    if(fd != NULL){
+        if(new_ping == NULL){
+            new_ping = (char *) malloc(5*sizeof(char));
+            if(new_ping == NULL){
+                (void) fclose(fd);
+                return;
+            }
+            (void) snprintf(new_ping,5*sizeof(char),"LOSS");
+        }
+        (void) fwrite(new_ping, sizeof(char), strlen(new_ping), fd);
+        (void) fclose(fd);
+    }else{
+        perror("write ping : ");
+    }
+
+    free(new_ping);
+}
+
+/*
+    -- set_stats_ping --
+    Desc :
+        Function which calculate statistics about ping values, from log file.
+    In-param :
+        None
+    Out-param :
+        None
+    Return value :
+        None
+*/
+void set_stats_ping(){
+    
+    /* Variables */
+    FILE* fd;
+    /* Open log file */
+    fd = fopen("/var/log/ping-report/all-ping.log","r");
+    
+    if(fd != NULL){
+        /* Stats variables */
+        double ping = 0.0;
+        double sum = 0.0;
+        double max = 0.0;
+        double min = 100.0;
+        double mean = 0.0;
+        int nb_high = 0;
+        int nb_loss = 0;
+        int nb_ping = 0;
+        char* read_line = NULL;    
+        size_t n = 0;
+    
+        /* Read file */
+        while(getline(&read_line,&n,fd) != -1){
+            
+            /* Check getline error */
+            if(read_line == NULL){
+                break;
+            }
+
+            /* Check if the ping is flagged as LOSS */
+            if(strcmp(read_line,"LOSS") == 0){
+                nb_loss++;
+            }else{
+                /* Evaluate the ping as a double */
+                ping = strtod(read_line,NULL);
+                /* Test null ping */
+                if(ping < 0.1){
+                    /* Ignore null ping */
+                }else{
+                    /* Number of ping readed (for mean calculation) */
+                    nb_ping++;
+                    /* Max ping */
+                    if(ping > max){
+                        max = ping;
+                    }
+                    /* Min ping */
+                    if(ping < min){
+                        min = ping;
+                    }
+                    /* Number of ping above 100 ms */
+                    if(ping > 100.0){
+                        nb_high++;
+                    }
+                    /* Sum (for mean calculation) */
+                    sum += ping;
+                }
+            } 
+            free(read_line);
+            n = 0;
+        }
+    
+        /* Mean calculation */
+        mean = sum / (double) nb_ping;
+        (void) fclose(fd);
+
+        insert_hourly_report(mean,max,min,nb_high,nb_loss,nb_ping);
+
+        if(read_line != NULL){
+            free(read_line);
+        }
+
+    }else{
+        perror("stats : ");
+    }
+}
+
+