Added known host test cases

tests/client/torture_knownhosts.c

@@ -25,6 +25,23 @@
 #include "session.c"
 
 #define KNOWNHOSTFILES "libssh_torture_knownhosts"
+#define BADRSA "AAAAB3NzaC1yc2EAAAADAQABAAABAQChm5" \
+               "a6Av65O8cKtx5YXOnui3wJnYE6A6J/I4kZSAibbn14Jcl+34VJQwv96f25AxNmo" \
+               "NwoiZV93IzdypQmiuieh6s6wB9WhYjU9K/6CkIpNhpCxswA90b3ePjS7LnR9B9J" \
+               "slPSbG1H0KC1c5lb7G3utXteXtM+4YvCvpN5VdC4CpghT+p0cwN2Na8Md5vRItz" \
+               "YgIytryNn7LLiwYfoSxvWigFrTTZsrVtCOYyNgklmffpGdzuC43wdANvTewfI9G" \
+               "o71r8EXmEc228CrYPmb8Scv3mpXFK/BosohSGkPlEHu9lf3YjnknBicDaVtJOYp" \
+               "wnXJPjZo2EhG79HxDRpjJHH"
+#define BADDSA "AAAAB3NzaC1kc3MAAACBAITDKqGQ5aC5wHySG6ZdL1+BVBY2nLP5vzw3i3pvZfP" \
+               "yNUS0UCwrt5pajsMvDRGXXebTJhWVonDnv8tpSgiuIBXMZrma8CU1KCFGRzwb/n8" \
+               "cc5tJmIphlOUTrObjBmsRz7u1eZmoaddXC9ask6BNnt0DmhzYi2esL3mbardy8IN" \
+               "zAAAAFQDlPFCm410pgQQPb3X5FWjyVEIl+QAAAIAp0vqfir8K8p+zP4dzFG7ppnt" \
+               "DjaXf3ge6URF7f5xPDo6CClGo2JQ2REF8NxM7K9cLgR9Ifx2ahO48UMgrXEl/BOp" \
+               "IQHpeBqUz26a49O5J0WEW16YSUHxWwMxWVe/SRmyKdTUZJ6fcepH88JNqm3XudNn" \
+               "s78grM+yx9mcXnK2AsAAAAIBxpF8ZQIlGrSgwCmCfwjP156bC3Ya6LYf9ZpLJ0dX" \
+               "EcxqLVllrNEvd2EGD9p16BYO2yaalYon8im59PtOcul2ay5XQ6rVDQ2T0pgNUpsI" \
+               "h0dSi8VJXI1wes5HTyLsv9VBmU1uCXUUvufoQKfF/OcSH0ufcCpnd62g1/adZcy2" \
+               "WJg=="
 
 static void setup(void **state) {
     int verbosity=torture_libssh_verbosity();
@@ -93,10 +110,115 @@ static void torture_knownhosts_port(void **state) {
     assert_true(rc == SSH_SERVER_KNOWN_OK);
 }
 
+static void torture_knownhosts_fail(void **state) {
+    ssh_session session = *state;
+    FILE *file;
+    int rc;
+
+    rc = ssh_options_set(session, SSH_OPTIONS_HOST, "localhost");
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_options_set(session, SSH_OPTIONS_KNOWNHOSTS, KNOWNHOSTFILES);
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_options_set(session, SSH_OPTIONS_HOSTKEYS, "ssh-rsa");
+    assert_true(rc == SSH_OK);
+
+    file = fopen(KNOWNHOSTFILES, "w");
+    assert_true(file != NULL);
+    fprintf(file, "localhost ssh-rsa %s\n", BADRSA);
+    fclose(file);
+
+    rc = ssh_connect(session);
+    assert_true(rc==SSH_OK);
+
+    rc = ssh_is_server_known(session);
+    assert_true(rc == SSH_SERVER_KNOWN_CHANGED);
+
+}
+
+static void torture_knownhosts_other(void **state) {
+    ssh_session session = *state;
+    FILE *file;
+    int rc;
+
+    rc = ssh_options_set(session, SSH_OPTIONS_HOST, "localhost");
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_options_set(session, SSH_OPTIONS_KNOWNHOSTS, KNOWNHOSTFILES);
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_options_set(session, SSH_OPTIONS_HOSTKEYS, "ssh-dss");
+    assert_true(rc == SSH_OK);
+
+    file = fopen(KNOWNHOSTFILES, "w");
+    assert_true(file != NULL);
+    fprintf(file, "localhost ssh-rsa %s\n", BADRSA);
+    fclose(file);
+
+    rc = ssh_connect(session);
+    assert_true(rc==SSH_OK);
+
+    rc = ssh_is_server_known(session);
+    assert_true(rc == SSH_SERVER_FOUND_OTHER);
+
+}
+
+static void torture_knownhosts_conflict(void **state) {
+    ssh_session session = *state;
+    FILE *file;
+    int rc;
+
+    rc = ssh_options_set(session, SSH_OPTIONS_HOST, "localhost");
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_options_set(session, SSH_OPTIONS_KNOWNHOSTS, KNOWNHOSTFILES);
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_options_set(session, SSH_OPTIONS_HOSTKEYS, "ssh-rsa");
+    assert_true(rc == SSH_OK);
+
+    file = fopen(KNOWNHOSTFILES, "w");
+    assert_true(file != NULL);
+    fprintf(file, "localhost ssh-rsa %s\n", BADRSA);
+    fprintf(file, "localhost ssh-dss %s\n", BADDSA);
+    fclose(file);
+
+    rc = ssh_connect(session);
+    assert_true(rc==SSH_OK);
+
+    rc = ssh_is_server_known(session);
+    assert_true(rc == SSH_SERVER_KNOWN_CHANGED);
+
+    rc = ssh_write_knownhost(session);
+    assert_true(rc==SSH_OK);
+
+    ssh_disconnect(session);
+    ssh_free(session);
+
+    /* connect again and check host key */
+    *state = session = ssh_new();
+
+    ssh_options_set(session, SSH_OPTIONS_HOST, "localhost");
+    ssh_options_set(session, SSH_OPTIONS_KNOWNHOSTS, KNOWNHOSTFILES);
+    rc = ssh_options_set(session, SSH_OPTIONS_HOSTKEYS, "ssh-rsa");
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_connect(session);
+    assert_true(rc == SSH_OK);
+
+    rc = ssh_is_server_known(session);
+    assert_true(rc == SSH_SERVER_KNOWN_OK);
+
+
+}
 int torture_run_tests(void) {
     int rc;
     const UnitTest tests[] = {
         unit_test_setup_teardown(torture_knownhosts_port, setup, teardown),
+        unit_test_setup_teardown(torture_knownhosts_fail, setup, teardown),
+        unit_test_setup_teardown(torture_knownhosts_other, setup, teardown),
+        unit_test_setup_teardown(torture_knownhosts_conflict, setup, teardown)
     };
 
     ssh_init();