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client: mask passphrase input

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This commit is contained in:
Tim Kourt 2018-05-03 14:11:55 -07:00 committed by Denis Kenzior
parent f9973a37f9
commit 394e274f5f
1 changed files with 50 additions and 1 deletions
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51
client/display.c
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@ -356,6 +356,50 @@ static void display_completion_matches(char **matches, int num_matches,
display_text(line);
}
#define MAX_PASSPHRASE_LEN 63
static struct masked_input {
char passphrase[MAX_PASSPHRASE_LEN];
char mask[MAX_PASSPHRASE_LEN];
} masked_input;
static void mask_input(void)
{
int point;
char *line = rl_copy_text(0, rl_end);
size_t len = strlen(line);
if (!len)
goto done;
point = rl_point;
if (len > MAX_PASSPHRASE_LEN) {
point--;
} else if (strlen(masked_input.passphrase) > len) {
masked_input.passphrase[len] = 0;
masked_input.mask[len] = 0;
} else {
masked_input.passphrase[len - 1] = line[len - 1];
masked_input.mask[len - 1] = '*';
}
rl_replace_line("", 0);
rl_redisplay();
rl_replace_line(masked_input.mask, 0);
rl_point = point;
rl_redisplay();
done:
l_free(line);
}
static void reset_masked_input(void)
{
memset(masked_input.passphrase, 0, MAX_PASSPHRASE_LEN);
memset(masked_input.mask, 0, MAX_PASSPHRASE_LEN);
}
static void readline_callback(char *prompt)
{
HIST_ENTRY *previous_prompt;
@ -368,7 +412,7 @@ static void readline_callback(char *prompt)
return;
}
if (agent_prompt(prompt))
if (agent_prompt(masked_input.passphrase))
goto done;
if (!strlen(prompt))
@ -399,6 +443,9 @@ static bool read_handler(struct l_io *io, void *user_data)
{
rl_callback_read_char();
if (display_agent_is_active())
mask_input();
return true;
}
@ -435,6 +482,8 @@ void display_agent_prompt(const char *network_name)
if (agent_saved_input)
return;
reset_masked_input();
display("Type the network passphrase for %s.\n", network_name);
agent_saved_input = l_new(struct saved_input, 1);