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unl0kr: add the CLI option to avoid suffixing a password with a newline character

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Appending the newline character '\n' is the right thing to do when you print a password to a tty or a text file.
But different tools process it differently. For example, cryptsetup strips the newline character, but systemd-cryptsetup with a password agent does not.
This commit allows to control the newline character with an option.
This commit is contained in:
Vladimir Stoiakin 2025-03-13 12:47:16 +03:00
parent 3196e47d51
commit 9bb6b3acdf
5 changed files with 16 additions and 7 deletions
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7
unl0kr/command_line.c
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@ -45,6 +45,7 @@ static void init_opts(ul_cli_opts *opts) {
opts->y_offset = 0;
opts->dpi = 0;
opts->rotation = LV_DISPLAY_ROTATION_0;
opts->newline = true;
opts->verbose = false;
}
@ -77,6 +78,7 @@ static void print_usage() {
" * 2 - upside down orientation (180 degrees)\n"
" * 3 - counterclockwise orientation (270 degrees)\n"
" -h, --help Print this message and exit\n"
" -n Do not append a newline character to a password\n"
" -v, --verbose Enable more detailed logging output on STDERR\n"
" -V, --version Print the unl0kr version and exit\n");
/*-------------------------------- 78 CHARS --------------------------------*/
@ -103,7 +105,7 @@ void ul_cli_parse_opts(int argc, char *argv[], ul_cli_opts *opts) {
int opt, index = 0;
while ((opt = getopt_long(argc, argv, "C:g:d:r:hvV", long_opts, &index)) != -1) {
while ((opt = getopt_long(argc, argv, "C:g:d:r:hnvV", long_opts, &index)) != -1) {
switch (opt) {
case 'C':
opts->config_files = realloc(opts->config_files, (opts->num_config_files + 1) * sizeof(char *));
@ -153,6 +155,9 @@ void ul_cli_parse_opts(int argc, char *argv[], ul_cli_opts *opts) {
case 'h':
print_usage();
exit(EXIT_SUCCESS);
case 'n':
opts->newline = false;
break;
case 'v':
opts->verbose = true;
break;