Update README.md

added IPv6 support #2

Makefile

@@ -4,12 +4,15 @@
 # solusipse.net
 # -----------------------------------
 
-CC=gcc
+CFLAGS+=-pthread -O2
-CFLAGS=-pthread -O2
 prefix=/usr/local
 
-all: fiche.c
+all: fiche
-	$(CC) -o fiche $(CFLAGS) fiche.c
 
 install: fiche
 	install -m 0755 fiche $(prefix)/bin
+
+clean:
+	rm -f fiche
+
+.PHONY: clean

README.md

@@ -1,242 +1,5 @@
-fiche [![Build Status](https://travis-ci.org/solusipse/fiche.svg?branch=master)](https://travis-ci.org/solusipse/fiche)
+# fiche
-=====
 
-Command line pastebin for sharing terminal output.
+## Warning
 
-## Installation ##
+Do not use code from this branch. Please use code from [master](https://github.com/solusipse/fiche) instead.
-
-1. Clone into repository:
-
-    ```
-    https://github.com/solusipse/fiche.git
-    ```
-
-2. Build program:
-
-    ```
-    make
-    ```
-    
-3. Install:
-
-    ```
-    sudo make install
-    ```
-
-## Client-side usage ##
-
-Self explanatory live examples:
-
-```
-ls -la | nc localhost 9999
-```
-
-```
-cat file.txt | nc solusipse.net 9999
-```
-
-```
-echo just testing! | nc code.solusipse.net 9999
-```
-
-If you haven't already set up your server on localhost, try second or third command. My personal server is
-providing fiche-based service all the time on this address `solusipse.net` and this port `9999`.
-
-- To upload text you need to have netcat installed (to check if netcat is installed, simply type ```nc``` in terminal).
-
-## Server-side usage ##
-
-```
-usage: fiche [-pbsdolBuw].
-             [-d domain] [-p port] [-s slug size]
-             [-o output directory] [-B buffer size] [-u user name]
-             [-l log file] [-b banlist] [-w whitelist]
-```
-
-These are command line arguments. You don't have to provide any, but providing basic is recommended. Without them, program
-will use these default settings:
-
-```
-domain = "http://localhost/";
-basedir= "~/code/";
-port = 9999;
-slug_size = 4;
-buffer_size = 8192;
-```
-
-### Arguments ###
-
-Most important is providing **basedir** and **domain**.
-
------------------
-
-#### Basedir ####
-
-Basedir should be **absolute** path to directory where you would like to store text files.
-
-
-```
-fiche -o /absolute/path/to/directory/
-```
-
-```
-fiche -o /home/www/code/
-```
-
------------------
-
-#### Domain ####
-
-Domain should be provided in such format ```domain.com```.
-
-```
-fiche -d domain.com
-```
-
-```
-fiche -d subdomain.domain.com
-```
-
------------------
-
-#### Slug size ####
-
-This will force fiche to create random slugs with given length, example:
-
-```
-fiche -s 6
-```
-
-```
-http://domain.com/abcdef/
-```
-
------------------
-
-#### User name ####
-
-If you use fiche as service (see details below) you may want to save files as other user, to do that use `-u` option,
-there's example:
-
-```
-fiche -u http
-```
-
------------------
-
-#### Buffersize ####
-
-This parameter defines max file size uploaded by user, by default it is set to `32768`.
-Use `-B` parameter to change it:
-
-```
-fiche -B 2048
-```
-
------------------
-
-#### Log file ###
-
-Path to file where all logs will be stored:
-
-```
-fiche -l /home/www/fiche-log.txt
-```
-
------------------
-
-#### Ban list ###
-
-Path to file where you provided all banned IP adresses:
-
-```
-fiche -b /home/www/fiche-bans.txt
-```
-
------------------
-
-#### White list ####
-
-If whitelist mode is enabled, only addresses from list will be able to upload files. There's example:
-
-```
-fiche -w /home/www/fiche-whitelist.txt
-```
-
------------------
-
-#### Whitelist and banlist syntax ####
-
-There is no specific syntax, there files may contain not only addresses.
-
------------------
-
-#### Examples ####
-
-Logging connections with banlist:
-
-```
-fiche -d domain.com -l /home/www/log.txt -b /home/www/bans.txt
-```
-
------------------
-
-Only for personal use with whitelist
-
-```
-fiche -d domain.com -w /home/www/whitelist.txt
-```
-
------------------
-
-Custom output directory, bigger slug size, reduced buffer, custom port:
-
-```
-fiche -d domain.com -o /media/disk/fiche/ -s 8 -B 2048 -p 6666
-```
-
-
-
-## Running as service ##
-You can run fiche as service, there is simple systemd example:
-
-```
-[Unit]
-Description=FICHE-SERVER
-
-[Service]
-ExecStart=/usr/local/bin/fiche -d code.solusipse.net -o /home/www/code/ -l /home/www/log.txt
-
-[Install]
-WantedBy=multi-user.target
-```
-
-In service mode you have to set output directory with `-o` parameter, there's example:
-
-```
-fiche -o /home/www/code/
-```
-
-## Webserver ##
-
-To make files available for users, you need to host them somehow. Http server is easiest option. Just set root 
-directory to ```BASEDIR```.
-
-There is sample configuration for nginx:
-
-```
-server {
-    listen 80;
-    server_name mysite.com www.mysite.com;
-    charset utf-8;
-
-    location / {
-            root /home/www/code/;
-            index index.txt index.html;
-    }
-}
-```
-
-## License ##
-
-Fiche is MIT licensed.

fiche.c

@@ -9,11 +9,15 @@ Live example: http://code.solusipse.net/
 
 -------------------------------------------------------------------------------
 
-usage: fiche [-pbsdolBuw].
+usage: fiche [-DepbsdolBuw].
-             [-d domain] [-p port] [-s slug size]
+             [-D] [-e] [-d domain] [-p port] [-s slug size]
              [-o output directory] [-B buffer size] [-u user name]
              [-l log file] [-b banlist] [-w whitelist]
 
+-D option is for daemonizing fiche
+
+-e option is for using an extended character set for the URL
+
 Compile with Makefile or manually with -O2 and -pthread flags.
 To install use `make install` command.
 
@@ -24,6 +28,7 @@ $ cat fiche.c | nc localhost 9999
 -------------------------------------------------------------------------------
 */
 
+#include <sys/param.h>
 #include "fiche.h"
 
 int main(int argc, char **argv)
@@ -31,6 +36,18 @@ int main(int argc, char **argv)
     time_seed = time(0);
 
     parse_parameters(argc, argv);
+    set_domain_name();
+
+    if (getuid() == 0)
+    {
+        if (UID == -1)
+            error("user not set");
+        if (setgid(GID) != 0)
+            error("Unable to drop group privileges");
+        if (setuid(UID) != 0)
+            error("Unable to drop user privileges");
+    }
+
     if (BASEDIR == NULL)
         set_basedir();
 
@@ -42,39 +59,79 @@ int main(int argc, char **argv)
     listen_socket = create_socket();
     setsockopt(listen_socket, SOL_SOCKET, SO_REUSEADDR, (const void *)&optval , sizeof(int));
 
+#if (HAVE_INET6)
+    struct sockaddr_in6 server_address6;
+    if (IPv6)
+    {
+        server_address6 = set_address6(server_address6);
+        bind_to_port6(listen_socket, server_address6);
+    }
+    else
+    {
+#else
+    if (1) {
+#endif
         server_address = set_address(server_address);
         bind_to_port(listen_socket, server_address);
+    }
 
+    if (DAEMON)
+    {
+        pid_t pid;
+
+        pid = fork();
+        if (pid == -1)
+            error("Failed to fork");
+        if (pid == 0)
             while (1) perform_connection(listen_socket);
+    }
+    else
+        while (1) perform_connection(listen_socket);
+
+    return 0;
 }
 
 void *thread_connection(void *args)
 {
     int connection_socket = ((struct thread_arguments *) args ) -> connection_socket;
-    struct sockaddr_in client_address = ((struct thread_arguments *) args ) -> client_address;
+    struct sockaddr_in client_address;
-
+    struct client_data data;
-    struct client_data data = get_client_address(client_address);
+#if (HAVE_INET6)
+    struct sockaddr_in6 client_address6;
+    if (IPv6)
+    {
+        client_address6 = ((struct thread_arguments *) args ) -> client_address6;
+        data = get_client_address6(client_address6);
+    }
+    else
+    {
+#else
+    if (1) {
+#endif
+        client_address = ((struct thread_arguments *) args ) -> client_address;
+        data = get_client_address(client_address);
+    }
 
     char buffer[BUFSIZE];
     bzero(buffer, BUFSIZE);
     int status = recv(connection_socket, buffer, BUFSIZE, MSG_WAITALL);
 
-    if (WHITELIST != NULL)
+    if (WHITELIST != NULL && check_whitelist(data.ip_address) == NULL)
-        if (check_whitelist(data.ip_address) == NULL)
     {
         display_info(data, NULL, "Rejected connection from unknown user.");
         save_log(NULL, data.ip_address, data.hostname);
-            write(connection_socket, "You are not whitelisted!\n", 26);
+        if (write(connection_socket, "You are not whitelisted!\n", 26) < 0)
+          printf("Error writing on stream socket\n");
         close(connection_socket);
         pthread_exit(NULL);
     }
 
-    if (BANLIST != NULL)
+    if (BANLIST != NULL && check_banlist(data.ip_address) != NULL)
-        if (check_banlist(data.ip_address) != NULL)
     {
         display_info(data, NULL, "Rejected connection from banned user.");
         save_log(NULL, data.ip_address, data.hostname);
-            write(connection_socket, "You are banned!\n", 17);
+        if (write(connection_socket, "You are banned!\n", 17) < 0)
+          printf("Error writing on stream socket\n");
         close(connection_socket);
         pthread_exit(NULL);
     }
@@ -89,13 +146,15 @@ void *thread_connection(void *args)
         save_log(slug, data.ip_address, data.hostname);
         char response[strlen(slug) + strlen(DOMAIN) + 2];
         snprintf(response, sizeof response, "%s%s\n", DOMAIN, slug);
-        write(connection_socket, response, strlen(response));
+        if (write(connection_socket, response, strlen(response)) < 0)
+          printf("Error writing on stream socket\n");
     }
     else
     {
         display_info(data, NULL, "Invalid connection.");
         save_log(NULL, data.ip_address, data.hostname);
-        write(connection_socket, "Use netcat.\n", 12);
+        if (write(connection_socket, "Use netcat.\n", 12) < 0)
+          printf("Error writing on stream socket\n");
     }
 
     close(connection_socket);
@@ -107,33 +166,49 @@ void perform_connection(int listen_socket)
     pthread_t thread_id;
     struct sockaddr_in client_address;
 
-    int address_lenght = sizeof(client_address);
+    int address_length;
-    int connection_socket = accept(listen_socket, (struct sockaddr *) &client_address, (void *) &address_lenght);
+    int connection_socket;
+
+#if (HAVE_INET6)
+    struct sockaddr_in6 client_address6;
+    if (IPv6)
+    {
+        address_length = sizeof(client_address6);
+        connection_socket = accept(listen_socket, (struct sockaddr *) &client_address6, (void *) &address_length);
+    }
+    else
+    {
+#else
+    if (1) {
+#endif
+        address_length = sizeof(client_address);
+        connection_socket = accept(listen_socket, (struct sockaddr *) &client_address, (void *) &address_length);
+    }
 
     struct timeval timeout;
     timeout.tv_sec = 5;
     timeout.tv_usec = 0;
 
     if (setsockopt (connection_socket, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout, sizeof(timeout)) < 0)
-        error("ERROR while setting setsockopt timeout");
+        error("while setting setsockopt timeout");
     if (setsockopt (connection_socket, SOL_SOCKET, SO_SNDTIMEO, (char *)&timeout, sizeof(timeout)) < 0)
-        error("ERROR while setting setsockopt timeout");
+        error("while setting setsockopt timeout");
 
     struct thread_arguments arguments;
     arguments.connection_socket = connection_socket;
+#if (HAVE_INET6)
+    if (IPv6)
+        arguments.client_address6 = client_address6;
+    else
+#endif
         arguments.client_address = client_address;
 
     if (pthread_create(&thread_id, NULL, &thread_connection, &arguments) != 0)
-        error("ERROR on thread creation");
+        error("on thread creation");
     else
         pthread_detach(thread_id);
 }
 
-void display_date()
-{
-    printf("%s\n", get_date());
-}
-
 char *get_date()
 {
     time_t rawtime;
@@ -157,7 +232,7 @@ struct client_data get_client_address(struct sockaddr_in client_address)
     hostp = gethostbyaddr((const char *)&client_address.sin_addr.s_addr, sizeof(client_address.sin_addr.s_addr), AF_INET);
     if (hostp == NULL)
     {
-        printf("ERROR: Couldn't obtain client's hostname\n");
+        printf("WARNING: Couldn't obtain client's hostname\n");
         data.hostname = "n/a";
     }
     else
@@ -166,7 +241,7 @@ struct client_data get_client_address(struct sockaddr_in client_address)
     hostaddrp = inet_ntoa(client_address.sin_addr);
     if (hostaddrp == NULL)
     {
-        printf("ERROR: Couldn't obtain client's address\n");
+        printf("WARNING: Couldn't obtain client's address\n");
         data.ip_address = "n/a";
     }
     else
@@ -175,6 +250,36 @@ struct client_data get_client_address(struct sockaddr_in client_address)
     return data;
 }
 
+#if (HAVE_INET6)
+struct client_data get_client_address6(struct sockaddr_in6 client_address6)
+{
+    struct hostent *hostp;
+    struct client_data data;
+    static char hostaddrp[INET6_ADDRSTRLEN];
+
+    hostp = gethostbyaddr((const char *)&client_address6.sin6_addr, sizeof(client_address6.sin6_addr), AF_INET6);
+    if (hostp == NULL)
+    {
+        printf("WARNING: Couldn't obtain client's hostname\n");
+        data.hostname = "n/a";
+    }
+    else
+        data.hostname = hostp->h_name;
+
+    inet_ntop(AF_INET6, &(client_address6.sin6_addr), hostaddrp,
+              INET6_ADDRSTRLEN);
+    if (hostaddrp == NULL)
+    {
+        printf("WARNING: Couldn't obtain client's address\n");
+        data.ip_address = "n/a";
+    }
+    else
+        data.ip_address = hostaddrp;
+
+    return data;
+}
+#endif
+
 void save_log(char *slug, char *hostaddrp, char *h_name)
 {
     if (LOG != NULL)
@@ -195,12 +300,17 @@ void save_log(char *slug, char *hostaddrp, char *h_name)
 
 void display_info(struct client_data data, char *slug, char *message)
 {
+    if (DAEMON)
+        return;
+
     if (slug == NULL)
         printf("%s\n", message);
-    else printf("Saved to: %s\n", slug);
+    else
-    display_date();
+        printf("Saved to: %s\n", slug);
+
+    printf("%s\n", get_date());
     printf("Client: %s (%s)\n", data.ip_address, data.hostname);
-    display_line();
+    printf("====================================\n");
 }
 
 char *check_banlist(char *ip_address)
@@ -217,13 +327,18 @@ char *check_whitelist(char *ip_address)
 
 void load_list(char *file_path, int type)
 {
-    FILE *fp = fopen(file_path, "r");
+    FILE *fp;
+    
+    if (( fp = fopen(file_path, "r")) == NULL )
+      error("cannot load list");
+    
     fseek(fp, 0, SEEK_END);
     long fsize = ftell(fp);
     fseek(fp, 0, SEEK_SET);
 
     char *buffer = malloc(fsize + 1);
-    fread(buffer, fsize, 1, fp);
+    if (fread(buffer, fsize, 1, fp) != fsize)
+      error("reading list failed");
     fclose(fp);
 
     buffer[fsize] = 0;
@@ -238,13 +353,18 @@ void load_list(char *file_path, int type)
 
 int create_socket()
 {
-    int lsocket = socket(AF_INET, SOCK_STREAM, 0);
+    int lsocket;
+#if (HAVE_INET6)
+    if (IPv6)
+        lsocket = socket(AF_INET6, SOCK_STREAM, 0);
+    else
+#endif
+        lsocket = socket(AF_INET, SOCK_STREAM, 0);
+
     if (lsocket < 0)
-    {
+        error("Couldn't open socket");
-        error("ERROR: Couldn't open socket");
+
-        return 0;
+    return lsocket;
-    }
-    else return lsocket;
 }
 
 struct sockaddr_in set_address(struct sockaddr_in server_address)
@@ -256,14 +376,35 @@ struct sockaddr_in set_address(struct sockaddr_in server_address)
     return server_address;
 }
 
+#if (HAVE_INET6)
+struct sockaddr_in6 set_address6(struct sockaddr_in6 server_address6)
+{
+    bzero((char *) &server_address6, sizeof(server_address6));
+    server_address6.sin6_family = AF_INET6;
+    server_address6.sin6_addr = in6addr_any;
+    server_address6.sin6_port = htons((unsigned short)PORT);
+    return server_address6;
+}
+#endif
+
 void bind_to_port(int listen_socket, struct sockaddr_in server_address)
 {
     if (bind(listen_socket, (struct sockaddr *) &server_address, sizeof(server_address)) < 0) 
-        error("ERROR while binding to port");
+        error("while binding to port");
     if (listen(listen_socket, QUEUE_SIZE) < 0)
-        error("ERROR while starting listening");
+        error("while starting listening");
 }
 
+#if (HAVE_INET6)
+void bind_to_port6(int listen_socket, struct sockaddr_in6 server_address6)
+{
+    if (bind(listen_socket, (struct sockaddr *) &server_address6, sizeof(server_address6)) < 0) 
+        error("while binding to port");
+    if (listen(listen_socket, QUEUE_SIZE) < 0)
+        error("while starting listening");
+}
+#endif
+
 void generate_url(char *buffer, char *slug, size_t slug_length, struct client_data data)
 {
     int i;
@@ -271,13 +412,21 @@ void generate_url(char *buffer, char *slug, size_t slug_length, struct client_da
 
     for (i = 0; i <= SLUG_SIZE - 1; i++)
     {
+#if defined(BSD)
+	int symbol_id = arc4random() % strlen(symbols);
+#else
         int symbol_id = rand_r(&time_seed) % strlen(symbols);
+#endif
         slug[i] = symbols[symbol_id];
     }
 
     while (create_directory(slug) == -1)
     {
+#if defined(BSD)
+	int symbol_id = arc4random() % strlen(symbols);
+#else
         int symbol_id = rand_r(&time_seed) % strlen(symbols);
+#endif
         slug[strlen(slug)] = symbols[symbol_id];
     }
 
@@ -286,16 +435,13 @@ void generate_url(char *buffer, char *slug, size_t slug_length, struct client_da
 
 int create_directory(char *slug)
 {
-    char *directory = malloc(strlen(BASEDIR) + strlen(slug) + 1);
+    char *directory = malloc(strlen(BASEDIR) + strlen(slug) + sizeof(char) + 1);
 
-    strcpy(directory, BASEDIR);
+    snprintf(directory, strlen(BASEDIR) + strlen(slug) + sizeof(char) + 1, "%s%s%s", BASEDIR, "/", slug);
-    strcat(directory, slug);
 
     mkdir(BASEDIR, S_IRWXU | S_IRGRP | S_IROTH | S_IXOTH | S_IXGRP);
     int result = mkdir(directory, S_IRWXU | S_IRGRP | S_IROTH | S_IXOTH | S_IXGRP);
 
-    change_owner(directory);
-
     free(directory);
 
     return result;
@@ -303,28 +449,20 @@ int create_directory(char *slug)
 
 void save_to_file(char *slug, char *buffer, struct client_data data)
 {
-    char *directory = malloc(strlen(BASEDIR) + strlen(slug) + strlen("/index.txt") + 1);
+    char *directory = malloc(strlen(BASEDIR) + strlen(slug) + 11 * sizeof(char) + 1 );
-    strcpy(directory, BASEDIR);
+
-    strcat(directory, slug);
+    snprintf(directory, strlen(BASEDIR) + strlen(slug) + 11 * sizeof(char) + 1, "%s%s%s%s", BASEDIR , "/", slug, "/index.txt");
-    strcat(directory, "/index.txt");
 
     FILE *fp;
     fp = fopen(directory, "w");
     fprintf(fp, "%s", buffer);
     fclose(fp);
 
-    change_owner(directory);
     display_info(data, directory, "");
 
     free(directory);
 }
 
-void change_owner(char *directory)
-{
-    if ((UID != -1)&&(GID != -1))
-    chown(directory, UID, GID);
-}
-
 void set_uid_gid(char *username)
 {
     struct passwd *userdata = getpwnam(username);
@@ -348,34 +486,67 @@ int check_protocol(char *buffer)
 void set_basedir()
 {
     BASEDIR = getenv("HOME");
-    strcat(BASEDIR, "/code/");
+    strncat(BASEDIR, "/code", 5 * sizeof(char));
 }
 
 void startup_message()
 {
-    display_line();
+    if (DAEMON)
+        return;
+
+    printf("====================================\n");
     printf("Domain name: %s\n", DOMAIN);
     printf("Saving files to: %s\n", BASEDIR);
     printf("Fiche started listening on port %d.\n", PORT);
-    display_line();
+    printf("Buffer size set to: %d.\n", BUFSIZE);
+    printf("Slug size set to: %d.\n", SLUG_SIZE);
+    printf("Log file: %s\n", LOG);
+    printf("====================================\n");
+}
+
+void error(char *buffer)
+{
+    printf("Error: %s\n", buffer);
+    exit(1);
+}
+
+void set_domain_name() {
+    char b[128];
+    memcpy(b, DOMAIN, sizeof DOMAIN);
+
+    if (HTTPS)
+        snprintf(DOMAIN, sizeof DOMAIN, "%s%s", "https://", b);
+    else
+        snprintf(DOMAIN, sizeof DOMAIN, "%s%s", "http://", b);
 }
 
 void parse_parameters(int argc, char **argv)
 {
     int c;
 
-    while ((c = getopt (argc, argv, "p:b:s:d:o:l:B:u:w:")) != -1)
+    while ((c = getopt (argc, argv, "D6eSp:b:s:d:o:l:B:u:w:")) != -1)
         switch (c)
         {
+            case 'D':
+                DAEMON = 1;
+                break;
+            case '6':
+                IPv6 = 1;
+                break;
+            case 'e':
+                snprintf(symbols, sizeof symbols, "%s", "abcdefghijklmnopqrstuvwxyz0123456789-+_=.ABCDEFGHIJKLMNOPQRSTUVWXYZ");
+                break;
+            case 'S':
+                HTTPS = 1;
+                break;
             case 'd':
-                snprintf(DOMAIN, sizeof DOMAIN, "%s%s%s", "http://", optarg, "/");
+                snprintf(DOMAIN, sizeof DOMAIN, "%s%s", optarg, "/");
                 break;
             case 'p':
                 PORT = atoi(optarg);
                 break;
             case 'B':
                 BUFSIZE = atoi(optarg);
-                printf("Buffer size set to: %d.\n", BUFSIZE);
                 break;
             case 'b':
                 BANFILE = optarg;
@@ -383,16 +554,12 @@ void parse_parameters(int argc, char **argv)
                 break;
             case 's':
                 SLUG_SIZE = atoi(optarg);
-                printf("Slug size set to: %d.\n", SLUG_SIZE);
                 break;
             case 'o':
                 BASEDIR = optarg;
-                if((BASEDIR[strlen(BASEDIR) - 1]) != '/')
-                    strcat(BASEDIR, "/");
                 break;
             case 'l':
                 LOG = optarg;
-                printf("Log file: %s\n", LOG);
                 break;
             case 'u':
                 set_uid_gid(optarg);
@@ -402,7 +569,7 @@ void parse_parameters(int argc, char **argv)
                 load_list(WHITEFILE, 1);
                 break;
             default:
-                printf("usage: fiche [-pbsdolBuw].\n");
+                printf("usage: fiche [-D6epbsdSolBuw].\n");
                 printf("                     [-d domain] [-p port] [-s slug_size]\n");
                 printf("                     [-o output directory] [-B buffer_size] [-u user name]\n");
                 printf("                     [-l log file] [-b banlist] [-w whitelist]\n");

fiche.h

@@ -9,11 +9,15 @@ Live example: http://code.solusipse.net/
 
 -------------------------------------------------------------------------------
 
-usage: fiche [-pbsdolBuw].
+usage: fiche [-DepbsdolBuw].
-             [-d domain] [-p port] [-s slug size]
+             [-D] [-e] [-d domain] [-p port] [-s slug size]
              [-o output directory] [-B buffer size] [-u user name]
              [-l log file] [-b banlist] [-w whitelist]
 
+-D option is for daemonizing fiche
+
+-e option is for using an extended character set for the URL
+
 Compile with Makefile or manually with -O2 and -pthread flags.
 To install use `make install` command.
 
@@ -27,6 +31,10 @@ $ cat fiche.c | nc localhost 9999
 #ifndef FICHE_H
 #define FICHE_H
 
+#ifndef HAVE_INET6
+#define HAVE_INET6 1
+#endif
+
 #include <pwd.h>
 #include <time.h>
 #include <netdb.h>
@@ -49,19 +57,25 @@ char *BANLIST;
 char *BANFILE;
 char *WHITEFILE;
 char *WHITELIST;
+int DAEMON = 0;
+int HTTPS = 0;
 int PORT = 9999;
+int IPv6 = 0;
 int SLUG_SIZE = 4;
 int BUFSIZE = 32768;
 int QUEUE_SIZE = 500;
-char DOMAIN[128] = "http://localhost/";
+char DOMAIN[128] = "localhost/";
+char symbols[67] = "abcdefghijklmnopqrstuvwxyz0123456789";
 
 unsigned int time_seed;
-const char *symbols = "abcdefghijklmnopqrstuvwxyz0123456789";
 
 struct thread_arguments
 {
 	int connection_socket;
 	struct sockaddr_in client_address;
+#if (HAVE_INET6)
+	struct sockaddr_in6 client_address6;
+#endif
 };
 
 struct client_data
@@ -75,27 +89,33 @@ int create_directory(char *slug);
 int check_protocol(char *buffer);
 
 void bind_to_port(int listen_socket, struct sockaddr_in serveraddr);
-void display_line(){printf("====================================\n");}
+#if (HAVE_INET6)
-void error(char *error_code){perror(error_code); exit(1);}
+void bind_to_port6(int listen_socket, struct sockaddr_in6 serveraddr6);
-void display_date();
+#endif
+void error(char *buffer);
 void perform_connection(int listen_socket);
 void generate_url(char *buffer, char *slug, size_t slug_length, struct client_data data);
 void save_to_file(char *buffer, char *slug, struct client_data data);
 void display_info(struct client_data data, char *slug, char *message);
 void startup_message();
 void set_basedir();
+void set_domain_name();
 void load_list(char *file_path, int type);
 void parse_parameters(int argc, char **argv);
 void save_log(char *slug, char *hostaddrp, char *h_name);
-void change_owner(char *directory);
 void set_uid_gid();
 
-char *return_line(){return("\n====================================");}
 char *check_banlist(char *ip_address);
 char *check_whitelist(char *ip_address);
 char *get_date();
 
 struct sockaddr_in set_address(struct sockaddr_in serveraddr);
+#if (HAVE_INET6)
+struct sockaddr_in6 set_address6(struct sockaddr_in6 serveraddr6);
+#endif
 struct client_data get_client_address(struct sockaddr_in client_address);
+#if (HAVE_INET6)
+struct client_data get_client_address6(struct sockaddr_in6 client_address6);
+#endif
 
 #endif