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examples: Refactor CLI unlock gimmick to fix possible Coverity issue

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson 2020-01-05 08:21:36 +01:00
parent d9f725f20a
commit 1305d05b75
1 changed files with 42 additions and 30 deletions
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56
examples/cli.c
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@ -64,7 +64,10 @@ static int my_rl_list_possib(char *token, char ***av)
for (num = 0; list[num]; num++)
;
copy = (char **) malloc (num * sizeof(char *));
if (!num)
return 0;
copy = malloc(num * sizeof(char *));
for (i = 0; i < num; i++) {
if (!strncmp(list[i], token, strlen (token))) {
copy[total] = strdup(list[i]);
@ -106,14 +109,41 @@ el_status_t do_suspend(void)
static void breakit(int signo)
{
(void)signo;
puts("Got SIGINT");
}
/* Use el_no_echo when reading passwords and similar */
static int unlock(const char *passwd)
{
char *prompt = "Enter password: ";
char *line;
int rc = 1;
el_no_echo = 1;
while ((line = readline(prompt))) {
rc = strncmp(line, passwd, strlen(passwd));
free(line);
if (rc) {
printf("\nWrong password, please try again, it's secret.\n");
continue;
}
printf("\nAchievement unlocked!\n");
break;
}
el_no_echo = 0;
return rc;
}
int main(void)
{
char *line;
char *prompt = "cli> ";
char *passwd = "Enter password: ";
signal(SIGINT, breakit);
@ -126,29 +156,11 @@ int main(void)
read_history(HISTORY);
while ((line = readline(prompt))) {
int next = 0;
/* Use el_no_echo when reading passwords and similar */
if (!strncmp(line, "unlock", 6)) {
el_no_echo = 1;
while ((line = readline(passwd))) {
if (strncmp(line, "secret", 6)) {
printf("\nWrong password, please try again, it's secret.\n");
if (!strncmp(line, "unlock", 6) && unlock("secret")) {
free(line);
continue;
}
el_no_echo = 0;
printf("\nAchievement unlocked!\n");
free(line);
next = 1;
fprintf(stderr, "\nSecurity breach, user logged out!\n");
break;
}
}
if (next)
continue;
if (*line != '\0')
printf("\t\t\t|%s|\n", line);