Hi Davide,
I had some time today, so I did some changes ("improvements", I hope
;-)) to your code:
First thing you do in add_option() if inline is used: auth_pass_file is
set (to "stdin").
So there is no need to check for both (options->auth_user_pass_file ||
options->auth_user_pass_file_inline), the "existing" check only for
"options->auth_user_pass_file" will suffice. That simplifies the patch.
Fixed terminating the copy of the strings.
Simplify tests in options_postprocess_verify_ce():
Fist check if options->auth_user_pass_file is set (as above, it is
"allways" set in any auth_user_path case), then it is always safe to do
"streq" on options->auth_user_pass_file, too.
Use existing file_check for inline files "CHKACC_INLINE" in
options_postprocess_filechecks()
In auth_user_pass_setup() don't change indents, only add "extra_flags"
Kind regards
Joerg
-------- Original-Nachricht --------
Betreff: Re: [Openvpn-devel] [PATCH] Allow inlining of --auth-user-pass
Von: Davide Brini <dave...@gmx.com>
An: max.mus...@kaffeeschluerfer.com
Kopie (CC): openvpn-devel@lists.sourceforge.net
Datum: So 06 Okt 2013 21:01:04 CEST
> Thanks for reporting! I have poor connectivity and little time this week, but
> I will look at it when I have a chance.
>
> Sent from mobile
>
> max.mus...@kaffeeschluerfer.com wrote:
[... snip ...]
--- src/openvpn/init.c
+++ src/openvpn/init.c
@@ -401,9 +401,9 @@
if (c->options.auth_user_pass_file)
{
#ifdef ENABLE_CLIENT_CR
- auth_user_pass_setup (c->options.auth_user_pass_file, &c->options.sc_info);
+ auth_user_pass_setup (c->options.auth_user_pass_file, c->options.auth_user_pass_file_inline, &c->options.sc_info);
#else
- auth_user_pass_setup (c->options.auth_user_pass_file, NULL);
+ auth_user_pass_setup (c->options.auth_user_pass_file, c->options.auth_user_pass_file_inline, NULL);
#endif
}
#endif
--- src/openvpn/misc.c
+++ src/openvpn/misc.c
@@ -1044,7 +1044,7 @@
if (!up->defined)
{
- const bool from_stdin = (!auth_file || !strcmp (auth_file, "stdin"));
+ const bool from_stdin = (!auth_file || streq (auth_file, "stdin"));
if (flags & GET_USER_PASS_PREVIOUS_CREDS_FAILED)
msg (M_WARN, "Note: previous '%s' credentials failed", prefix);
--- src/openvpn/options.c
+++ src/openvpn/options.c
@@ -1221,6 +1221,7 @@
SHOW_BOOL (client);
SHOW_BOOL (pull);
SHOW_STR (auth_user_pass_file);
+ SHOW_STR (auth_user_pass_file_inline);
gc_free (&gc);
}
@@ -2339,6 +2340,42 @@
#if P2MP
if (options->auth_user_pass_file && !options->pull)
msg (M_USAGE, "--auth-user-pass requires --pull");
+ if (options->auth_user_pass_file) /* no check needed if no auth_pass_file set. It is even set in case of inline (to "stdin") */
+ {
+ if ( (!streq(options->auth_user_pass_file, "stdin") || options->auth_user_pass_file_inline) && options->auth_nocache)
+ msg (M_USAGE, "Cannot use --auth-nocache with credentials from file");
+#ifdef ENABLE_CLIENT_CR
+ if ( (!streq(options->auth_user_pass_file, "stdin") || options->auth_user_pass_file_inline) && options->sc_info.challenge_text)
+ msg (M_USAGE, "Credentials cannot be in a file if using --static-challenge");
+#endif
+ }
+ if (options->auth_user_pass_file_inline)
+ {
+ int n_inlined = 0;
+ const char *pos = options->auth_user_pass_file_inline;
+ const char *prev = pos;
+
+ if ( strlen(pos) == 0 )
+ msg (M_USAGE, "Invalid format for inlined --auth-user-pass");
+
+ while( (pos = strchr(pos, '\n')) != NULL )
+ {
+ n_inlined++;
+
+ if (n_inlined > 2)
+ msg (M_USAGE, "Too many lines in inlined --auth-user-pass");
+
+ if ( pos - prev > USER_PASS_LEN - 1 )
+ msg (M_USAGE, "Line too long in inlined --auth-user-pass");
+
+ pos++;
+ prev = pos;
+ }
+
+ if ( (n_inlined == 0) || (*prev != '\0') )
+ msg (M_USAGE, "Invalid format for inlined --auth-user-pass");
+
+ }
#endif
uninit_options (&defaults);
@@ -2706,7 +2743,7 @@
"--management user/password file");
#endif /* ENABLE_MANAGEMENT */
#if P2MP
- errs |= check_file_access (CHKACC_FILE|CHKACC_ACPTSTDIN,
+ errs |= check_file_access (CHKACC_FILE|CHKACC_ACPTSTDIN|CHKACC_INLINE,
options->auth_user_pass_file, R_OK,
"--auth-user-pass");
#endif /* P2MP */
@@ -5835,7 +5872,12 @@
VERIFY_PERMISSION (OPT_P_GENERAL);
if (p[1])
{
- options->auth_user_pass_file = p[1];
+ options->auth_user_pass_file = p[1];
+ if (streq (p[1], INLINE_FILE_TAG) && p[2])
+ { msg (M_WARN, "options.c \n !!!SETTING !!! \n_ +5930,12 @@ add_optio");
+ options->auth_user_pass_file = "stdin";
+ options->auth_user_pass_file_inline = p[2];
+ }
}
else
options->auth_user_pass_file = "stdin";
@@ -6462,6 +6504,7 @@
else if (streq (p[0], "auth-nocache"))
{
VERIFY_PERMISSION (OPT_P_GENERAL);
+ options->auth_nocache = true;
ssl_set_auth_nocache ();
}
else if (streq (p[0], "auth-token") && p[1])
--- src/openvpn/options.h
+++ src/openvpn/options.h
@@ -290,6 +290,7 @@
bool up_delay;
bool up_restart;
bool daemon;
+ bool auth_nocache;
int remap_sigusr1;
@@ -459,6 +460,7 @@
bool pull; /* client pull of config options from server */
int push_continuation;
const char *auth_user_pass_file;
+ const char *auth_user_pass_file_inline;
struct options_pre_pull *pre_pull;
int server_poll_timeout;
--- src/openvpn/ssl.c
+++ src/openvpn/ssl.c
@@ -357,11 +357,57 @@
#endif
void
-auth_user_pass_setup (const char *auth_file, const struct static_challenge_info *sci)
+auth_user_pass_setup (const char *auth_file, const char *auth_file_inline, const struct static_challenge_info *sci)
{
+
+ int extra_flags = 0;
+ int n_inlined = 0;
+ char inlined_username[USER_PASS_LEN];
+ char inlined_password[USER_PASS_LEN];
+
auth_user_pass_enabled = true;
+
if (!auth_user_pass.defined)
{
+ if (auth_file && streq (auth_file, "stdin") && auth_file_inline)
+ {
+ /* check how much is inlined. */
+ const char *pos = auth_file_inline;
+ const char *prev = pos;
+
+ while( (pos = strchr(pos, '\n')) != NULL)
+ {
+ n_inlined++;
+
+ if (n_inlined == 1)
+ {
+ strncpy(inlined_username, prev, pos - prev);
+ inlined_username[pos - prev] = '\0';
+ msg (M_INFO, "Using inlined username: %s", inlined_username);
+ }
+ else
+ {
+ strncpy(inlined_password, prev, pos - prev);
+ inlined_password[pos - prev] = '\0';
+ msg (M_INFO, "Using inlined password: ... ");
+ }
+
+ pos++;
+ prev = pos;
+ }
+
+ if (n_inlined == 1)
+ extra_flags = GET_USER_PASS_PASSWORD_ONLY;
+ }
+
+ if (n_inlined == 2)
+ {
+ strcpy(auth_user_pass.username, inlined_username);
+ strcpy(auth_user_pass.password, inlined_password);
+ auth_user_pass.defined = true;
+ }
+ else
+ {
#if AUTO_USERID
get_user_pass_auto_userid (&auth_user_pass, auth_file);
#else
@@ -370,11 +416,11 @@
get_user_pass_cr (&auth_user_pass,
auth_file,
UP_TYPE_AUTH,
- GET_USER_PASS_MANAGEMENT|GET_USER_PASS_SENSITIVE|GET_USER_PASS_DYNAMIC_CHALLENGE,
+ GET_USER_PASS_MANAGEMENT|GET_USER_PASS_SENSITIVE|GET_USER_PASS_DYNAMIC_CHALLENGE|extra_flags,
auth_challenge);
else if (sci) /* static challenge response */
{
- int flags = GET_USER_PASS_MANAGEMENT|GET_USER_PASS_SENSITIVE|GET_USER_PASS_STATIC_CHALLENGE;
+ int flags = GET_USER_PASS_MANAGEMENT|GET_USER_PASS_SENSITIVE|GET_USER_PASS_STATIC_CHALLENGE|extra_flags;
if (sci->flags & SC_ECHO)
flags |= GET_USER_PASS_STATIC_CHALLENGE_ECHO;
get_user_pass_cr (&auth_user_pass,
@@ -385,8 +431,11 @@
}
else
# endif
- get_user_pass (&auth_user_pass, auth_file, UP_TYPE_AUTH, GET_USER_PASS_MANAGEMENT|GET_USER_PASS_SENSITIVE);
+ get_user_pass (&auth_user_pass, auth_file, UP_TYPE_AUTH, GET_USER_PASS_MANAGEMENT|GET_USER_PASS_SENSITIVE|extra_flags);
#endif
+ }
+ if (n_inlined == 1)
+ strcpy(auth_user_pass.username, inlined_username);
}
}
@@ -1872,9 +1921,9 @@
if (auth_user_pass_enabled)
{
#ifdef ENABLE_CLIENT_CR
- auth_user_pass_setup (NULL, session->opt->sci);
+ auth_user_pass_setup (NULL, NULL, session->opt->sci);
#else
- auth_user_pass_setup (NULL, NULL);
+ auth_user_pass_setup (NULL, NULL, NULL);
#endif
if (!write_string (buf, auth_user_pass.username, -1))
goto error;
--- src/openvpn/ssl.h
+++ src/openvpn/ssl.h
@@ -388,7 +388,7 @@
* Setup authentication username and password. If auth_file is given, use the
* credentials stored in the file.
*/
-void auth_user_pass_setup (const char *auth_file, const struct static_challenge_info *sc_info);
+void auth_user_pass_setup (const char *auth_file, const char *auth_file_inline, const struct static_challenge_info *sc_info);
/*
* Ensure that no caching is performed on authentication information
