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#include <stdio.h>
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <ctype.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/random.h>
#include "dvault.h"
#include "util_rt.h"
int main (const int argc, char **args) {
int exit_code = 0;
ssize_t fd_read_size;
size_t read_size = 0;
uint8_t salt;
prne_dvault_mask_result_t mask_result;
prne_data_type_t type;
prne_init_dvault_mask_result(&mask_result);
if (argc <= 1) {
fprintf(stderr,
"Usage: %s <type> [salt]\n"
"<type>: 'cstr', 'bin'\n"
"[salt]: salt hex value\n",
args[0]);
exit_code = 2;
goto END;
}
if (argc >= 3) {
for (char *p = args[2]; *p != 0; p += 1) {
*p = (char)tolower(*p);
}
if (sscanf(args[2], "%hhx", &salt) != 1) {
perror("parsing salt: ");
exit_code = 1;
goto END;
}
}
else {
prne_geturandom(&salt, sizeof(salt));
}
type = prne_data_type_fstr(args[1]);
switch (type) {
case PRNE_DATA_TYPE_BIN:
case PRNE_DATA_TYPE_CSTR: {
static const size_t buf_size = 0x0000FFFF + 1;
uint8_t buf[buf_size];
do {
fd_read_size = read(STDIN_FILENO, buf + read_size, buf_size - read_size);
if (fd_read_size < 0) {
perror("Error reading stdin");
exit_code = 1;
goto END;
}
if (fd_read_size > 0) {
read_size += fd_read_size;
if (read_size >= buf_size) {
fprintf(stderr, "Error: data too large\n");
exit_code = 1;
goto END;
}
}
} while (fd_read_size > 0);
if (read_size == 0) {
fprintf(stderr, "Error: no data read\n");
exit_code = 1;
goto END;
}
mask_result = prne_dvault_mask(type, salt, read_size, buf);
if (mask_result.result == PRNE_DVAULT_MASK_OK) {
printf("(uint8_t*)\"%s\",\n", mask_result.str);
}
else {
fprintf(stderr, "Error: prne_dvault_mask() returned %d\n", (int)mask_result.result);
exit_code = 1;
goto END;
}
break;
}
default:
fprintf(stderr, "Error: unknown data type '%s'\n", args[1]);
exit_code = 2;
goto END;
}
END:
prne_free_dvault_mask_result(&mask_result);
return exit_code;
}
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