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#include <stdio.h>
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <fcntl.h>
#include "proone_dvault.h"
static const char *RND_DEV_PATH = "/dev/random";
int main (const int argc, const char **args) {
int exit_code = 0;
int rnd_fd = -1;
ssize_t fd_read_size;
uint8_t salt;
size_t read_size = 0;
proone_dvault_mask_result_t mask_result;
proone_data_type_t type;
proone_init_dvault_mask_result(&mask_result);
if (argc <= 1) {
fprintf(stderr,
"Usage: %s <type>\n"
"<type>: 'cstr'\n"
"\n"
"using random device: %s\n",
args[0], RND_DEV_PATH);
exit_code = 2;
goto END;
}
rnd_fd = open(RND_DEV_PATH, O_RDONLY);
if (rnd_fd < 0) {
perror("Error opening random device");
exit_code = 1;
goto END;
}
fd_read_size = read(rnd_fd, &salt, 1);
if (fd_read_size < 0) {
perror("Error reading random device");
exit_code = 1;
goto END;
}
if (fd_read_size == 0) {
fprintf(stderr, "Nothing read from random device. Low entropy?\n");
exit_code = 1;
goto END;
}
close(rnd_fd);
rnd_fd = -1;
type = proone_str2data_type(args[1]);
switch (type) {
case PROONE_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 = proone_dvault_mask(type, salt, read_size, buf);
if (mask_result.result == PROONE_DVAULT_MASK_OK) {
printf("(uint8_t*)\"%s\"\n", mask_result.str);
}
else {
fprintf(stderr, "Error: proone_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:
close(rnd_fd);
proone_free_dvault_mask_result(&mask_result);
return exit_code;
}
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