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-rw-r--r--src/onetimebluh.c220
1 files changed, 115 insertions, 105 deletions
diff --git a/src/onetimebluh.c b/src/onetimebluh.c
index 50eaeae..f19137b 100644
--- a/src/onetimebluh.c
+++ b/src/onetimebluh.c
@@ -7,25 +7,38 @@
#include <errno.h>
#include <error.h>
-void xor (int64_t ed, char* mess, char* keyf, char* outp, int64_t quiet); /* operates the bitwise XOR between mess and keyf and puts the output to outp */
-void keyrand (int64_t nb, char* outp, int64_t quiet); /* generates random numbers using RAND_bytes from openssl and puts them into outp */
-void bluh (int64_t c, char* mess, char* outp, char* ch, int64_t quiet); /* performs the binary dump of the input file and prints that to outp */
+typedef struct opts {
+ int64_t comm;
+ int64_t nbytes;
+ int64_t quiet;
+ int64_t tear;
+ char* chars;
+ char* keyfile;
+ char* input;
+ char* output;
+} Opts;
+
+void xor (Opts* opzioni); /* operates the bitwise XOR between mess and keyf and puts the output to outp */
+void keyrand (Opts* opzioni); /* generates random numbers using RAND_bytes from openssl and puts them into outp */
+void bluh (Opts* opzioni); /* performs the binary dump of the input file and prints that to outp */
void help (char* av[]); /* prints the help message */
int main (int argc, char* argv[]) {
uint64_t opt = 1;
int64_t command = 0;
- int64_t comm = 0;
- int64_t tear = 0;
- int64_t quiet = 0;
- char* chars = "01";
- char* message = NULL;
- char* keyfile = NULL;
- char* output = NULL;
- int64_t nbytes = -1; // must be resolved temporary workaround (ho sonno)
char* sip = NULL;
+ Opts opzioni;
+ opzioni.comm = 0;
+ opzioni.nbytes = -1; // must be resolved temporary workaround (ho sonno)
+ opzioni.quiet = 0;
+ opzioni.tear = 0;
+ opzioni.chars = "01";
+ opzioni.keyfile = NULL;
+ opzioni.input = NULL;
+ opzioni.output = NULL;
+
/* The following while cycle parses the argv vector to find commands, options and relative arguments
using the function getopt_long */
@@ -52,78 +65,78 @@ int main (int argc, char* argv[]) {
switch (opt) {
case 'b':
- message = argv[optind-1];
- if (access (message, F_OK) == -1) { /* look at next comment */
- error (errno, errno, message);
+ opzioni.input = argv[optind-1];
+ if (access (opzioni.input, F_OK) == -1) { /* look at next comment */
+ error (errno, errno, opzioni.input);
}
command ++;
- comm = 'b';
+ opzioni.comm = 'b';
break;
case 'c':
if (strlen (argv[optind - 1]) != 2){
printf ("Too much or too many characters inserted!");
exit (EXIT_FAILURE);
}
- chars = argv[optind - 1];
+ opzioni.chars = argv[optind - 1];
break;
case 'd':
- message = argv[optind-1];
+ opzioni.input = argv[optind-1];
command ++;
- comm = 'r';
+ opzioni.comm = 'd';
break;
case 'e':
- message = argv[optind-1];
- if (access (message, F_OK) == -1) { /* checks the existence of the file and eventually exits */
- error (errno, errno, message);
+ opzioni.input = argv[optind-1];
+ if (access (opzioni.input, F_OK) == -1) { /* checks the existence of the file and eventually exits */
+ error (errno, errno, opzioni.input);
}
command ++;
- comm = 'e';
+ opzioni.comm = 'e';
break;
case 'g':
command++;
- comm = 'g';
+ opzioni.comm = 'g';
break;
case 'h':
help (argv);
command ++;
break;
case 'k':
- keyfile = argv[optind-1];
- if (access (keyfile, F_OK) == -1) { /* look at the previous comment */
- error (errno, errno, keyfile);
+ opzioni.keyfile = argv[optind-1];
+ if (access (opzioni.keyfile, F_OK) == -1) { /* look at the previous comment */
+ error (errno, errno, opzioni.keyfile);
}
break;
case 'n':
- nbytes = strtol (argv[optind-1], &sip, 10);
+ opzioni.nbytes = strtol (argv[optind-1], &sip, 10);
if (sip[0] == 'K') {
- nbytes = nbytes*1024;
+ opzioni.nbytes = opzioni.nbytes*1024;
} else if (sip[0] == 'M') {
- nbytes = nbytes*1024*1024;
+ opzioni.nbytes = opzioni.nbytes*1024*1024;
} else if (sip[0] == 'G') {
- nbytes = nbytes*1024*1024*1024;
+ opzioni.nbytes = opzioni.nbytes*1024*1024*1024;
} else if (sip[0] == 'T') {
- nbytes = nbytes*1024*1024*1024*1024;
+ opzioni.nbytes = opzioni.nbytes*1024*1024*1024*1024;
} else if (sip[0] != '\0') {
printf ("You must specify the size in KiB, MiB, GiB or TiB, respectively using K, M, G or T, or nothing for single bytes.");
exit (EXIT_FAILURE);
}
break;
case 'o':
- output = argv[optind-1];
+ opzioni.output = argv[optind-1];
break;
case 'q':
- quiet = 1;
+ opzioni.quiet = 1;
break;
case 't':
- tear = 1;
+ opzioni.tear = 1;
break;
case 'u':
- message = argv[optind-1];
- if (access (message, F_OK) == -1) { /* just guess */
- error (errno, errno, message);
+ opzioni.input = argv[optind-1];
+ if (access (opzioni.input, F_OK) == -1) { /* just guess */
+ error (errno, errno, opzioni.input);
}
command ++;
- comm = 'u';
+ opzioni.comm = 'u';
break;
case '?':
break;
@@ -134,7 +147,7 @@ int main (int argc, char* argv[]) {
/* Next section performs some input checks */
- if (command == 0) {
+ if (!command) {
printf ("%s: No command called\n", argv[0]);
exit (EXIT_FAILURE);
} else if (command > 1) {
@@ -150,48 +163,45 @@ int main (int argc, char* argv[]) {
/* Next section detects the functions to call */
- if (comm == 'e' || comm == 'r') {
- if (keyfile == NULL) {
+ if (opzioni.comm == 'e' || opzioni.comm == 'd') {
+ if (opzioni.keyfile == NULL) {
printf ("%s: No key specified: exit!\n", argv[0]);
exit (EXIT_FAILURE);
}
- if (tear == 1) {
- comm++;
- }
- xor (comm, message, keyfile, output, quiet);
- } else if (comm == 'g') {
- keyrand (nbytes, output, quiet);
- } else if (comm == 'b' || comm == 'u') {
- bluh (comm, message, output, chars, quiet);
+ xor (&opzioni);
+ } else if (opzioni.comm == 'g') {
+ keyrand (&opzioni);
+ } else if (opzioni.comm == 'b' || opzioni.comm == 'u') {
+ bluh (&opzioni);
}
exit (EXIT_SUCCESS);
}
-void xor (int64_t ed, char* mess, char* keyf, char* outp, int64_t quiet) {
+void xor (Opts* opzioni) {
- char* defenoutp = "critt";
- char* defdeoutp = "decritt";
+ char* defenout = "critt";
+ char* defdeout = "decritt";
/* In absence of input by users next block sets the default values */
- if (outp == NULL) {
- if (ed == 'e' || ed == 'f') {
- if (!quiet) {
+ if (opzioni->output == NULL) {
+ if (opzioni->comm == 'e') {
+ if (!opzioni->quiet) {
printf ("WARNING no output name specified using default value 'critt' \n");
}
- outp = defenoutp;
- } else if (ed == 'r' || ed == 's') {
- if (!quiet) {
+ opzioni->output = defenout;
+ } else if (opzioni->comm == 'd') {
+ if (!opzioni->quiet) {
printf ("WARNING no output name specified usign default value 'decritt' \n");
}
- outp = defdeoutp;
+ opzioni->output = defdeout;
}
}
- FILE* mex = fopen (mess, "r");
- FILE* keyx = fopen (keyf, "r+");
- FILE* critt = fopen (outp, "w");
+ FILE* mex = fopen (opzioni->input, "r");
+ FILE* keyx = fopen (opzioni->keyfile, "r+");
+ FILE* critt = fopen (opzioni->output, "w");
int64_t mess_size;
int64_t pad_size;
@@ -216,11 +226,11 @@ void xor (int64_t ed, char* mess, char* keyf, char* outp, int64_t quiet) {
fwrite (bytes, sizeof(char), mess_size, critt);
- if (ed == 'f' || ed == 's') {
+ if (opzioni->tear) {
ftruncate (fileno (keyx), (pad_size - mess_size));
fseek (keyx, 0L, SEEK_END);
int64_t new_pad_size = ftell (keyx);
- if (!quiet) {
+ if (!opzioni->quiet) {
printf ("Your pad is now %li bytes shorter \n", mess_size);
printf ("You now have %li bytes left \n", new_pad_size);
}
@@ -232,12 +242,12 @@ void xor (int64_t ed, char* mess, char* keyf, char* outp, int64_t quiet) {
fclose (keyx);
fclose (critt);
- if (ed == 'e' || ed == 'f') {
- if (!quiet) {
+ if (opzioni->comm == 'e') {
+ if (!opzioni->quiet) {
printf ("Message successfully encrypted \n");
}
- } else if (ed == 'r' || ed == 's') {
- if (!quiet) {
+ } else if (opzioni->comm == 'd') {
+ if (!opzioni->quiet) {
printf ("Message successfully decrypted \n");
}
}
@@ -245,50 +255,50 @@ void xor (int64_t ed, char* mess, char* keyf, char* outp, int64_t quiet) {
return;
}
-void keyrand (int64_t nb, char* outp, int64_t quiet) {
+void keyrand (Opts* opzioni) {
- char* defoutp = "default.key";
+ char* defout = "default.key";
/* Next block controls the inputs and eventually sets the default values */
- if((nb == -1) && (outp == NULL)) {
- if (!quiet) {
+ if((opzioni->nbytes == -1) && (opzioni->output == NULL)) {
+ if (!opzioni->quiet) {
printf ("WARNING no option specified usign default values... \n");
}
- nb = 1048576;
- outp = defoutp;
+ opzioni->nbytes = 1048576;
+ opzioni->output = defout;
}
- if (nb < -1) { // orribile
+ if (opzioni->nbytes < -1) { // orribile
printf ("Negative byte value inserted! \n");
printf ("Exiting... \n");
exit (EXIT_FAILURE);
- } else if (nb != 0) {
- if(nb == -1) {
- if (!quiet) {
+ } else if (opzioni->nbytes) {
+ if(opzioni->nbytes == -1) {
+ if (!opzioni->quiet) {
printf ("No byte number specified... using default value: 1MB \n");
}
- nb = 1048576;
+ opzioni->nbytes = 1048576;
}
- if (outp == NULL) {
- outp = defoutp;
- if (!quiet) {
+ if (opzioni->output == NULL) {
+ opzioni->output = defout;
+ if (!opzioni->quiet) {
printf ("No output name specified... using default value: default.key \n");
}
}
- if (!quiet) {
+ if (!opzioni->quiet) {
printf ("Generating pad...\n");
}
- unsigned char* key = malloc (nb);
- RAND_bytes (key, nb);
+ unsigned char* key = malloc (opzioni->nbytes);
+ RAND_bytes (key, opzioni->nbytes);
- FILE* file = fopen (outp, "w");
- fwrite (key, sizeof(char), nb, file);
+ FILE* file = fopen (opzioni->output, "w");
+ fwrite (key, sizeof(char), opzioni->nbytes, file);
fclose (file);
free (key);
- if (!quiet) {
- printf ("Created key file %s of %ld bytes \n", outp, nb);
+ if (!opzioni->quiet) {
+ printf ("Created key file %s of %ld bytes \n", opzioni->output, opzioni->nbytes);
}
} else {
printf ("Byte number specified is 0. \n");
@@ -298,31 +308,31 @@ void keyrand (int64_t nb, char* outp, int64_t quiet) {
return;
}
-void bluh (int64_t c, char* mess, char* outp, char* ch, int64_t quiet) {
+void bluh (Opts* opzioni) {
char* defbluh = "bluhed";
char* defunbluh = "unbluhed";
- char a = ch[0];
- char b = ch[1];
+ char a = opzioni->chars[0];
+ char b = opzioni->chars[1];
/* In absence of input by users next block sets the default values */
- if (outp == NULL) {
- if (c == 'b') {
- if (!quiet) {
+ if (opzioni->output == NULL) {
+ if (opzioni->comm == 'b') {
+ if (!opzioni->quiet) {
printf ("WARNING no output name specified using default value 'bluhed' \n");
}
- outp = defbluh;
- } else if (c == 'u') {
- if (!quiet) {
+ opzioni->output = defbluh;
+ } else if (opzioni->comm == 'u') {
+ if (!opzioni->quiet) {
printf ("WARNING no output name specified usign default value 'unbluhed' \n");
}
- outp = defunbluh;
+ opzioni->output = defunbluh;
}
}
- FILE* mex = fopen (mess, "r");
- FILE* bluh = fopen (outp, "w");
+ FILE* mex = fopen (opzioni->input, "r");
+ FILE* bluh = fopen (opzioni->output, "w");
int64_t len;
@@ -330,7 +340,7 @@ void bluh (int64_t c, char* mess, char* outp, char* ch, int64_t quiet) {
len = ftell (mex);
rewind (mex);
- if (c == 'b') {
+ if (opzioni->comm == 'b') {
char* bytes = malloc (len);
char* bits = malloc (8 * len);
@@ -348,11 +358,11 @@ void bluh (int64_t c, char* mess, char* outp, char* ch, int64_t quiet) {
free (bytes);
free (bits);
- if (!quiet) {
+ if (!opzioni->quiet) {
printf ("Message successfully bluhed!\n");
}
- } else if (c == 'u') {
+ } else if (opzioni->comm == 'u') {
char* comp = malloc ((len / 8) + 1);
char* bits = malloc (len);
@@ -373,7 +383,7 @@ void bluh (int64_t c, char* mess, char* outp, char* ch, int64_t quiet) {
free (comp);
free (bits);
- if (!quiet) {
+ if (!opzioni->quiet) {
printf ("Message successfully unbluhed!\n");
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 01:47:02 +0000