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virNetLibsshAuthenticateKeyboardInteractive: Use virAuthAskCredential

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Rework the code to use the new helper instead of open coding the auth
callback interaction.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jonathon Jongsma <jjongsma@redhat.com>
This commit is contained in:
Peter Krempa 2022-12-08 16:04:13 +01:00
parent 95f4879e97
commit d9bdfe4e21
1 changed files with 7 additions and 40 deletions
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47
src/rpc/virnetlibsshsession.c
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@ -647,26 +647,17 @@ virNetLibsshAuthenticateKeyboardInteractive(virNetLibsshSession *sess,
virBufferAddChar(&buff, '\n');
for (iprompt = 0; iprompt < nprompts; ++iprompt) {
virConnectCredential retr_passphrase;
const char *promptStr;
int promptStrLen;
char echo;
char *prompt = NULL;
int cred_type;
g_autofree char *prompt = NULL;
g_autoptr(virConnectCredential) cred = NULL;
/* get the prompt */
promptStr = ssh_userauth_kbdint_getprompt(sess->session, iprompt,
&echo);
promptStrLen = virLengthForPromptString(promptStr);
cred_type = virCredTypeForPrompt(sess->cred, echo);
if (cred_type == -1) {
virReportError(VIR_ERR_LIBSSH, "%s",
_("no suitable callback for input of keyboard "
"response"));
goto prompt_error;
}
/* create the prompt for the user, using the instruction
* buffer if specified
*/
@ -681,42 +672,18 @@ virNetLibsshAuthenticateKeyboardInteractive(virNetLibsshSession *sess,
prompt = g_strndup(promptStr, promptStrLen);
}
memset(&retr_passphrase, 0, sizeof(virConnectCredential));
retr_passphrase.type = cred_type;
retr_passphrase.prompt = prompt;
if (!(cred = virAuthAskCredential(sess->cred, prompt, echo)))
return SSH_AUTH_ERROR;
if (retr_passphrase.type == -1) {
virReportError(VIR_ERR_LIBSSH, "%s",
_("no suitable callback for input of key "
"passphrase"));
goto prompt_error;
}
if (sess->cred->cb(&retr_passphrase, 1, sess->cred->cbdata)) {
virReportError(VIR_ERR_LIBSSH, "%s",
_("failed to retrieve keyboard interactive "
"result: callback has failed"));
goto prompt_error;
}
VIR_FREE(prompt);
ret = ssh_userauth_kbdint_setanswer(sess->session, iprompt,
retr_passphrase.result);
virSecureEraseString(retr_passphrase.result);
g_free(retr_passphrase.result);
if (ret < 0) {
if (ssh_userauth_kbdint_setanswer(sess->session, iprompt,
cred->result) < 0) {
errmsg = ssh_get_error(sess->session);
virReportError(VIR_ERR_AUTH_FAILED,
_("authentication failed: %s"), errmsg);
goto prompt_error;
return SSH_AUTH_ERROR;
}
continue;
prompt_error:
VIR_FREE(prompt);
return SSH_AUTH_ERROR;
}
ret = ssh_userauth_kbdint(sess->session, NULL, NULL);