1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Copyright (c) 2019 Balabit
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include "credentials.h"
#include "compat/string.h"
#include <termios.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
static gchar *credentials_key;
static gchar *credentials_secret;
static gchar **credentials_remaining;
static gchar *
consume_next_from_remaining(gchar **remaining, gint *available_index)
{
if (!remaining)
return NULL;
return remaining[(*available_index)++];
}
static void
set_console_echo(gboolean new_state)
{
if (!isatty(STDIN_FILENO))
return;
struct termios t;
if (tcgetattr(STDIN_FILENO, &t))
{
fprintf(stderr, "syslog-ng-ctl: error while tcgetattr: %s\n", strerror(errno));
return;
}
if (new_state)
t.c_lflag |= ECHO;
else
t.c_lflag &= ~((tcflag_t) ECHO);
if (tcsetattr(STDIN_FILENO, TCSANOW, &t))
fprintf(stderr, "syslog-ng-ctl: error while tcsetattr: %s\n", strerror(errno));
}
static void
read_password_from_stdin(gchar *buffer, gsize *length)
{
printf("enter password:");
set_console_echo(FALSE);
if (-1 == getline(&buffer, length, stdin))
{
set_console_echo(TRUE);
fprintf(stderr, "error while reading password from terminal: %s", strerror(errno));
g_assert_not_reached();
}
set_console_echo(TRUE);
printf("\n");
}
static gint
slng_passwd_add(int argc, char *argv[], const gchar *mode, GOptionContext *ctx)
{
gchar *answer;
gint remaining_unused_index = 0;
if (!credentials_key)
credentials_key = consume_next_from_remaining(credentials_remaining, &remaining_unused_index);
if (!credentials_key)
{
gchar *usage = g_option_context_get_help(ctx, TRUE, NULL);
fprintf(stderr, "Error: missing arguments!\n%s\n", usage);
g_free(usage);
return 1;
}
if (!is_syslog_ng_running())
return 1;
if (!credentials_secret)
credentials_secret = consume_next_from_remaining(credentials_remaining, &remaining_unused_index);
gchar *secret_to_store;
if (credentials_secret)
{
secret_to_store = g_strdup(credentials_secret);
if (!secret_to_store)
g_assert_not_reached();
}
else
{
gsize buff_size = 256;
secret_to_store = g_malloc0(buff_size);
if (!secret_to_store)
g_assert_not_reached();
read_password_from_stdin(secret_to_store, &buff_size);
}
gint retval = asprintf(&answer, "PWD %s %s %s", "add", credentials_key, secret_to_store);
if (retval == -1)
g_assert_not_reached();
secret_storage_wipe(secret_to_store, strlen(secret_to_store));
g_free(secret_to_store);
if (credentials_secret)
secret_storage_wipe(credentials_secret, strlen(credentials_secret));
gint result = dispatch_command(answer);
secret_storage_wipe(answer, strlen(answer));
g_free(answer);
return result;
}
static gint
slng_passwd_status(int argc, char *argv[], const gchar *mode, GOptionContext *ctx)
{
gchar *answer;
gint retval = asprintf(&answer, "PWD %s", "status");
if (retval == -1)
g_assert_not_reached();
return dispatch_command(answer);
}
static GOptionEntry credentials_options_add[] =
{
{ "id", 'i', 0, G_OPTION_ARG_STRING, &credentials_key, "ID of the credential", "<id>" },
{ "secret", 's', 0, G_OPTION_ARG_STRING, &credentials_secret, "Secret part of the credential", "<secret>" },
{ G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_STRING_ARRAY, &credentials_remaining, NULL, NULL },
{ NULL, 0, 0, G_OPTION_ARG_NONE, NULL, NULL }
};
CommandDescriptor credentials_commands[] =
{
{ "add", credentials_options_add, "Add credentials to credential store", slng_passwd_add },
{ "status", no_options, "Query stored credential status", slng_passwd_status },
{ NULL }
};
|
