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knownhosts writing and unit test

Этот коммит содержится в:
Aris Adamantiadis 2010-05-01 12:47:44 +02:00
родитель 22be109956
Коммит 6b320a00a0
3 изменённых файлов: 138 добавлений и 10 удалений

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@ -1695,7 +1695,7 @@ int ssh_is_server_known(ssh_session session) {
*
* @param[in] session The ssh session to use.
*
* @return 0 on success, -1 on error.
* @return SSH_OK on success, SSH_ERROR on error.
*/
int ssh_write_knownhost(ssh_session session) {
ssh_string pubkey = session->current_crypto->server_pubkey;
@ -1703,8 +1703,25 @@ int ssh_write_knownhost(ssh_session session) {
char buffer[4096] = {0};
FILE *file;
char *dir;
char *host;
char *hostport;
size_t len = 0;
if (session->host == NULL) {
ssh_set_error(session, SSH_FATAL,
"Can't write host in known hosts if the hostname isn't known");
return SSH_ERROR;
}
host = ssh_lowercase(session->host);
/* If using a nonstandard port, save the host in the [host]:port format */
if(session->port != 22){
hostport = ssh_hostport(host,session->port);
SAFE_FREE(host);
host=hostport;
hostport=NULL;
}
if (session->knownhosts == NULL) {
if (ssh_options_set(session, SSH_OPTIONS_KNOWNHOSTS, NULL) < 0) {
ssh_set_error(session, SSH_FATAL, "Can't find a known_hosts file");
@ -1712,12 +1729,6 @@ int ssh_write_knownhost(ssh_session session) {
}
}
if (session->host == NULL) {
ssh_set_error(session, SSH_FATAL,
"Cannot write host in known hosts if the hostname is unknown");
return -1;
}
/* Check if ~/.ssh exists and create it if not */
dir = ssh_dirname(session->knownhosts);
if (dir == NULL) {
@ -1739,6 +1750,7 @@ int ssh_write_knownhost(ssh_session session) {
ssh_set_error(session, SSH_FATAL,
"Couldn't open known_hosts file %s for appending: %s",
session->knownhosts, strerror(errno));
SAFE_FREE(host);
return -1;
}
@ -1758,6 +1770,7 @@ int ssh_write_knownhost(ssh_session session) {
key = publickey_from_string(session, pubkey);
if (key == NULL) {
fclose(file);
SAFE_FREE(host);
return -1;
}
@ -1766,6 +1779,7 @@ int ssh_write_knownhost(ssh_session session) {
if (sexp == NULL) {
publickey_free(key);
fclose(file);
SAFE_FREE(host);
return -1;
}
e = gcry_sexp_nth_mpi(sexp, 1, GCRYMPI_FMT_USG);
@ -1773,6 +1787,7 @@ int ssh_write_knownhost(ssh_session session) {
if (e == NULL) {
publickey_free(key);
fclose(file);
SAFE_FREE(host);
return -1;
}
@ -1781,6 +1796,7 @@ int ssh_write_knownhost(ssh_session session) {
publickey_free(key);
bignum_free(e);
fclose(file);
SAFE_FREE(host);
return -1;
}
n = gcry_sexp_nth_mpi(sexp, 1, GCRYMPI_FMT_USG);
@ -1789,6 +1805,7 @@ int ssh_write_knownhost(ssh_session session) {
publickey_free(key);
bignum_free(e);
fclose(file);
SAFE_FREE(host);
return -1;
}
@ -1813,12 +1830,13 @@ int ssh_write_knownhost(ssh_session session) {
#endif
publickey_free(key);
fclose(file);
SAFE_FREE(host);
return -1;
}
snprintf(buffer, sizeof(buffer),
"%s %d %s %s\n",
session->host,
host,
rsa_size << 3,
e_string,
n_string);
@ -1838,18 +1856,19 @@ int ssh_write_knownhost(ssh_session session) {
pubkey_64 = bin_to_base64(pubkey->string, string_len(pubkey));
if (pubkey_64 == NULL) {
fclose(file);
SAFE_FREE(host);
return -1;
}
snprintf(buffer, sizeof(buffer),
"%s %s %s\n",
session->host,
host,
session->current_crypto->server_pubkey_type,
pubkey_64);
SAFE_FREE(pubkey_64);
}
SAFE_FREE(host);
len = strlen(buffer);
if (fwrite(buffer, len, 1, file) != 1 || ferror(file)) {
fclose(file);

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@ -4,3 +4,4 @@ add_check_test(torture_list torture_list.c ${TORTURE_LIBRARY})
add_check_test(torture_misc torture_misc.c ${TORTURE_LIBRARY})
add_check_test(torture_keyfiles torture_keyfiles.c ${TORTURE_LIBRARY})
add_check_test(torture_options torture_options.c ${TORTURE_LIBRARY})
add_check_test(torture_knownhosts torture_knownhosts.c ${TORTURE_LIBRARY})

108
tests/unittests/torture_knownhosts.c Обычный файл
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@ -0,0 +1,108 @@
/*
* This file is part of the SSH Library
*
* Copyright (c) 2010 by Aris Adamantiadis
*
* The SSH 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.
*
* The SSH 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 the SSH Library; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#define LIBSSH_STATIC
#include "torture.h"
#include "libssh/libssh.h"
#include "libssh/priv.h"
#include "libssh/session.h"
ssh_session session;
#define KNOWNHOSTFILES "libssh_torture_knownhosts"
static void setup(void) {
session = ssh_new();
}
static void teardown(void) {
ssh_free(session);
unlink(KNOWNHOSTFILES);
}
START_TEST (torture_knownhosts_port)
{
int rc;
char buffer[200];
FILE *file;
/* Connect to localhost:22, force the port to 1234 and then write
* the known hosts file. Then check that the entry written is
* [localhost]:1234
*/
ssh_options_set(session,SSH_OPTIONS_HOST,"localhost");
ssh_options_set(session,SSH_OPTIONS_KNOWNHOSTS,KNOWNHOSTFILES);
rc=ssh_connect(session);
ck_assert_int_eq(rc,SSH_OK);
session->port=1234;
rc=ssh_write_knownhost(session);
ck_assert_int_eq(rc,SSH_OK);
ssh_disconnect(session);
ssh_free(session);
file=fopen(KNOWNHOSTFILES,"r");
ck_assert(file != NULL);
fgets(buffer,sizeof(buffer),file);
buffer[sizeof(buffer)-1]='\0';
ck_assert(strstr(buffer,"[localhost]:1234 ") != NULL);
fclose(file);
/* now, connect back to the ssh server and verify the known host line */
session=ssh_new();
ssh_options_set(session,SSH_OPTIONS_HOST,"localhost");
ssh_options_set(session,SSH_OPTIONS_KNOWNHOSTS,KNOWNHOSTFILES);
rc=ssh_connect(session);
ck_assert_int_eq(rc,SSH_OK);
session->port=1234;
rc=ssh_is_server_known(session);
ck_assert_int_eq(rc,SSH_SERVER_KNOWN_OK);
ssh_disconnect(session);
}
END_TEST
static Suite *torture_make_suite(void) {
Suite *s = suite_create("libssh_knownhosts");
torture_create_case_fixture(s, "torture_knownhosts_port",
torture_knownhosts_port, setup, teardown);
return s;
}
int main(int argc, char **argv) {
Suite *s = NULL;
SRunner *sr = NULL;
struct argument_s arguments;
int nf;
ZERO_STRUCT(arguments);
torture_cmdline_parse(argc, argv, &arguments);
s = torture_make_suite();
sr = srunner_create(s);
if (arguments.nofork) {
srunner_set_fork_status(sr, CK_NOFORK);
}
srunner_run_all(sr, CK_VERBOSE);
nf = srunner_ntests_failed(sr);
srunner_free(sr);
return (nf == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}