Primo commit

Makefile

@@ -0,0 +1,26 @@
+CC = gcc
+CFLAGS = -Wall
+
+DEPS = src/utils/list.h src/email.h src/load_fileitem.h src/validation.h
+OBJ = src/utils/list.o src/email.o src/load_fileitem.o src/validation.o src/main.o
+
+%.o: %.c $(DEPS)
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+lugbar: $(OBJ)
+	$(CC) -o $@ $^ $(CFLAGS)
+
+.PHONY: clean
+
+clean:
+	rm -f $(OBJ) lugbar *~
+
+install:
+	mkdir -p /etc/lugbar
+	wget https://raw.githubusercontent.com/Roma2Lug-Projects/NFC-Emulator/main/src/config/products.txt -O /etc/lugbar/item.txt
+	cp lugbar /usr/local/bin/
+	chmod u+x /usr/local/bin/lugbar
+
+uninstall:
+	rm -rf /usr/local/bin/lugbar
+	rm -rf /etc/lugbar/item.txt

lugbar_0.0-1/DEBIAN/control

@@ -0,0 +1,8 @@
+Package: lugbar
+Version: 0.0-1
+Section: base
+Priority: optional
+Architecture: amd64
+Depends: msmtp, wget
+Maintainer: Valerio
+Description: lugbar

lugbar_0.0-1/DEBIAN/postinst

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+mkdir -p /etc/lugbar
+wget https://raw.githubusercontent.com/Roma2Lug-Projects/NFC-Emulator/main/src/config/products.txt -O /etc/lugbar/item.txt
+
+chmod u+x /usr/local/bin/lugbar
+chmod 775 /etc/lugbar/item.txt

src/email.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void sendemail(char *item) {
+
+    char command[100];
+
+    sprintf(command, "printf 'Subject:%s' | msmtp -a lugbar [email protected]", item);    
+    if(system(command) == -1) {
+        perror("Error: ");
+    }
+}

src/email.h

@@ -0,0 +1 @@
+int sendemail(char *item);

src/load_fileitem.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "utils/list.h"
+
+struct head_node *loadfile(){
+
+    char const* const file_name = "/etc/lugbar/item.txt";
+    FILE* file = fopen(file_name, "r");
+    char line[32];
+
+    struct head_node *item_list = create_list();
+
+    while (fgets(line, sizeof(line), file)) {
+
+        insert_node(&item_list, line);
+    }
+
+    fclose(file);
+
+    return item_list;
+}

src/load_fileitem.h

@@ -0,0 +1 @@
+struct head_node *loadfile();

src/main.c

@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "load_fileitem.h"
+#include "email.h"
+#include "validation.h"
+#include "utils/list.h"
+
+int main(int argc, char **argv) {
+
+    int i = 0;
+
+    if (valid() == -1) {
+        return 0;
+    }
+
+    struct head_node *item_list = loadfile();
+    struct node *current = item_list->next;
+    int max_item = item_list->count;
+
+    if(argc == 1) {
+        printf("Uso: %s [OPZIONE]...[NUMERO] ...\n\nPer ordinare usa %s [NUMERO]\nOpzioni disponibili:\n--lista\tlista gli elementi col corrispettivo numero di ordinazione\n", argv[0], argv[0]);
+        return 0;
+    }
+
+    else if (strcmp(argv[1], "--lista") == 0) {
+        while(i++ < max_item){
+            printf("%d. %s\n", i, current->item_name);
+            current = current->next;
+        }
+        return 0;
+    }
+
+    else if (strcmp(argv[1], "versamento") == 0) {
+       if (argc < 3) {
+           printf("Assente l'importo del versamento\n");
+       }
+       else {
+            char subject[16];
+            sprintf(subject, "versamento %s", argv[2]);
+
+            if(!sendemail(subject)) {
+                printf("Versato %s\n", argv[2]);
+            }
+        }
+    }
+
+    else if (atoi(argv[1]) > max_item) {
+        puts("Acquisto non valido. Usa lugbar -lista per listare gli elementi");
+        return 0;
+    }
+
+    else if (atoi(argv[1]) < max_item && atoi(argv[1]) > 0) {
+        char *choice_item = lookup_list(&current, atoi(argv[1])-1);
+        char subject[16];
+        sprintf(subject, "acquisto %s", choice_item);
+        if(!sendemail(subject)) {
+            printf("Acquistato %s\n", choice_item);
+
+        }
+    }
+
+    else {
+        printf("Uso: %s [OPZIONE]...[NUMERO] ...\n\nPer ordinare usa %s [NUMERO]\n\nOpzioni disponibili:\n--lista lista gli elementi col corrispettivo numero di ordinazione\n", argv[0], argv[0]);
+        return 0;
+    }
+
+    return 0;
+}

src/utils/list.c

@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "list.h"
+
+char *lookup_list(struct node **first_node, int p) {
+    struct node *cursor;
+    cursor = *first_node;
+    while(cursor) {
+        if(cursor->pos != p) {
+            cursor = cursor->next;
+        }
+        else {
+            return cursor->item_name;
+        }
+    }
+
+    return NULL;
+}
+
+struct head_node *create_list(){
+
+    struct head_node *temp;
+    temp = malloc(sizeof(struct head_node));
+    temp->count = 0;
+    temp->next = NULL;
+
+    return temp;
+}
+
+void insert_node(struct head_node **head, char *item) {
+
+    struct node *temp = malloc(sizeof(struct node));
+    strcpy(temp->item_name, item);
+    temp->next=NULL;
+    int i = 1;
+
+    if((*head)->next == NULL) {
+        (*head)->next = temp;
+        (*head)->count = 1;
+    }
+
+    else {
+
+        struct node *current;
+        current = (*head)->next;
+        while(current->next!=NULL) {
+            i++;
+            current=current->next;
+        }
+
+        temp->pos = i;
+        current->next=temp;
+        (*head)->count = ((*head)->count) + 1;
+
+
+    }
+}

src/utils/list.h

@@ -0,0 +1,15 @@
+struct node {
+    int pos;
+    char item_name[32];
+    struct node* next;
+};
+
+struct head_node {
+    int count;
+    struct node* next;
+};
+
+void insert_node(struct head_node **head, char *item);
+struct head_node *create_list();
+char *lookup_list(struct node **first_node, int p);
+

src/validation.c

@@ -0,0 +1,82 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+int check_fileitem(){
+
+    char* fullpath = "/etc/lugbar/item.txt";
+
+    FILE *file;
+
+    if ((file = fopen(fullpath, "r")) == NULL) {
+        if (errno == ENOENT) {
+            return -1;
+        }
+    }
+
+    fclose(file);
+    return 1;
+}
+
+int check_msmtp(){
+    if (system("which msmtp > /dev/null 2>&1")){
+        return -1;
+    }
+    return 1;
+}
+
+int check_config(){
+    char* fullpath = "/etc/msmtprc";
+
+    FILE *file;
+
+    if ((file = fopen(fullpath, "r")) == NULL) {
+        if (errno == ENOENT) {          
+            return -1;
+        }
+    }
+
+    fclose(file);
+    return 1;
+}
+
+
+
+int valid(){
+
+    if(check_fileitem() == -1) {
+        printf("File /etc/lugbar/item.txt assente\n");
+        return -1;
+    }
+    if(check_msmtp() == -1) {
+        printf("Programma msmtp non installato\n");
+        return -1;
+    }
+
+    if(check_config() == -1) {
+        printf("File in /etc/msmtprc assente\n");
+        printf("Esempio file:\n\n"
+                "defaults\n"
+                "syslog LOG_MAIL\n"
+                "auth on\n"
+                "tls on\n"
+                "aliases /etc/aliases\n"
+                "# Example with GMAIL\n"
+                "account lugbar\n"
+                "host smtp.gmail.com\n"
+                "port 465\n"
+                "tls on\n"
+                "tls_starttls off\n"
+                "from \"tuo nome\"\n"
+                "user [email protected]\n"
+                "password \"password\"""\n"
+                "set_from_header on\n\n"
+                "Se usi Gmail devi generare una password per app https://myaccount.google.com/apppasswords\n");
+        return -1;
+    }
+
+    return 1;
+
+}

src/validation.h

@@ -0,0 +1,4 @@
+int check_fileitem();
+int check_msmtp();
+int check_config();
+int valid();