Annotation of embedaddon/sudo/plugins/sudoers/auth/fwtk.c, revision 1.1.1.2
1.1 misho 1: /*
2: * Copyright (c) 1999-2005, 2008, 2010-2011
3: * Todd C. Miller <Todd.Miller@courtesan.com>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: *
17: * Sponsored in part by the Defense Advanced Research Projects
18: * Agency (DARPA) and Air Force Research Laboratory, Air Force
19: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
20: */
21:
22: #include <config.h>
23:
24: #include <sys/types.h>
25: #include <sys/param.h>
26: #include <stdio.h>
27: #ifdef STDC_HEADERS
28: # include <stdlib.h>
29: # include <stddef.h>
30: #else
31: # ifdef HAVE_STDLIB_H
32: # include <stdlib.h>
33: # endif
34: #endif /* STDC_HEADERS */
35: #ifdef HAVE_STRING_H
36: # include <string.h>
37: #endif /* HAVE_STRING_H */
38: #ifdef HAVE_STRINGS_H
39: # include <strings.h>
40: #endif /* HAVE_STRING_H */
41: #ifdef HAVE_UNISTD_H
42: # include <unistd.h>
43: #endif /* HAVE_UNISTD_H */
44: #include <pwd.h>
45:
46: #include <auth.h>
47: #include <firewall.h>
48:
49: #include "sudoers.h"
50: #include "sudo_auth.h"
51:
52: int
1.1.1.2 ! misho 53: sudo_fwtk_init(struct passwd *pw, sudo_auth *auth)
1.1 misho 54: {
55: static Cfg *confp; /* Configuration entry struct */
56: char resp[128]; /* Response from the server */
1.1.1.2 ! misho 57: debug_decl(sudo_fwtk_init, SUDO_DEBUG_AUTH)
1.1 misho 58:
59: if ((confp = cfg_read("sudo")) == (Cfg *)-1) {
60: warningx(_("unable to read fwtk config"));
1.1.1.2 ! misho 61: debug_return_int(AUTH_FATAL);
1.1 misho 62: }
63:
64: if (auth_open(confp)) {
65: warningx(_("unable to connect to authentication server"));
1.1.1.2 ! misho 66: debug_return_int(AUTH_FATAL);
1.1 misho 67: }
68:
69: /* Get welcome message from auth server */
70: if (auth_recv(resp, sizeof(resp))) {
71: warningx(_("lost connection to authentication server"));
1.1.1.2 ! misho 72: debug_return_int(AUTH_FATAL);
1.1 misho 73: }
74: if (strncmp(resp, "Authsrv ready", 13) != 0) {
75: warningx(_("authentication server error:\n%s"), resp);
1.1.1.2 ! misho 76: debug_return_int(AUTH_FATAL);
1.1 misho 77: }
78:
1.1.1.2 ! misho 79: debug_return_int(AUTH_SUCCESS);
1.1 misho 80: }
81:
82: int
1.1.1.2 ! misho 83: sudo_fwtk_verify(struct passwd *pw, char *prompt, sudo_auth *auth)
1.1 misho 84: {
85: char *pass; /* Password from the user */
86: char buf[SUDO_PASS_MAX + 12]; /* General prupose buffer */
87: char resp[128]; /* Response from the server */
88: int error;
1.1.1.2 ! misho 89: debug_decl(sudo_fwtk_verify, SUDO_DEBUG_AUTH)
1.1 misho 90:
91: /* Send username to authentication server. */
92: (void) snprintf(buf, sizeof(buf), "authorize %s 'sudo'", pw->pw_name);
93: restart:
94: if (auth_send(buf) || auth_recv(resp, sizeof(resp))) {
95: warningx(_("lost connection to authentication server"));
1.1.1.2 ! misho 96: debug_return_int(AUTH_FATAL);
1.1 misho 97: }
98:
99: /* Get the password/response from the user. */
100: if (strncmp(resp, "challenge ", 10) == 0) {
101: (void) snprintf(buf, sizeof(buf), "%s\nResponse: ", &resp[10]);
102: pass = auth_getpass(buf, def_passwd_timeout * 60, SUDO_CONV_PROMPT_ECHO_OFF);
103: if (pass && *pass == '\0') {
104: pass = auth_getpass("Response [echo on]: ",
105: def_passwd_timeout * 60, SUDO_CONV_PROMPT_ECHO_ON);
106: }
107: } else if (strncmp(resp, "chalnecho ", 10) == 0) {
108: pass = auth_getpass(&resp[10], def_passwd_timeout * 60,
109: SUDO_CONV_PROMPT_ECHO_OFF);
110: } else if (strncmp(resp, "password", 8) == 0) {
111: pass = auth_getpass(prompt, def_passwd_timeout * 60,
112: SUDO_CONV_PROMPT_ECHO_OFF);
113: } else if (strncmp(resp, "display ", 8) == 0) {
114: fprintf(stderr, "%s\n", &resp[8]);
115: strlcpy(buf, "response dummy", sizeof(buf));
116: goto restart;
117: } else {
118: warningx("%s", resp);
1.1.1.2 ! misho 119: debug_return_int(AUTH_FATAL);
1.1 misho 120: }
121: if (!pass) { /* ^C or error */
1.1.1.2 ! misho 122: debug_return_int(AUTH_INTR);
1.1 misho 123: }
124:
125: /* Send the user's response to the server */
126: (void) snprintf(buf, sizeof(buf), "response '%s'", pass);
127: if (auth_send(buf) || auth_recv(resp, sizeof(resp))) {
128: warningx(_("lost connection to authentication server"));
129: error = AUTH_FATAL;
130: goto done;
131: }
132:
133: if (strncmp(resp, "ok", 2) == 0) {
134: error = AUTH_SUCCESS;
135: goto done;
136: }
137:
138: /* Main loop prints "Permission Denied" or insult. */
139: if (strcmp(resp, "Permission Denied.") != 0)
140: warningx("%s", resp);
141: error = AUTH_FAILURE;
142: done:
143: zero_bytes(pass, strlen(pass));
144: zero_bytes(buf, strlen(buf));
1.1.1.2 ! misho 145: debug_return_int(error);
1.1 misho 146: }
147:
148: int
1.1.1.2 ! misho 149: sudo_fwtk_cleanup(struct passwd *pw, sudo_auth *auth)
1.1 misho 150: {
1.1.1.2 ! misho 151: debug_decl(sudo_fwtk_cleanup, SUDO_DEBUG_AUTH)
1.1 misho 152:
153: auth_close();
1.1.1.2 ! misho 154: debug_return_int(AUTH_SUCCESS);
1.1 misho 155: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to fwtk.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / sudo / plugins / sudoers / auth