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auth: Refactor kbdauth_init().

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Rename it to ssh_userauth_kbdint_init.
This commit is contained in:
Andreas Schneider
2011-08-25 16:41:14 +02:00
parent 892cb92f57
commit a51d377afe
1 changed files with 94 additions and 60 deletions
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144
src/auth.c
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@@ -1451,71 +1451,105 @@ void ssh_kbdint_clean(ssh_kbdint kbd) {
kbd->nanswers = 0;
}
/* this function sends the first packet as explained in section 3.1
* of the draft */
static int kbdauth_init(ssh_session session, const char *user,
const char *submethods) {
ssh_string usr = NULL;
ssh_string sub = NULL;
ssh_string service = NULL;
ssh_string method = NULL;
int rc = SSH_AUTH_ERROR;
/*
* This function sends the first packet as explained in RFC 3066 section 3.1.
*/
static int ssh_userauth_kbdint_init(ssh_session session,
const char *username,
const char *submethods)
{
ssh_string str;
int rc;
enter_function();
usr = ssh_string_from_char(user);
if (usr == NULL) {
ssh_set_error_oom(session);
goto error;
}
sub = (submethods ? ssh_string_from_char(submethods) : ssh_string_from_char(""));
if (sub == NULL) {
ssh_set_error_oom(session);
goto error;
}
service = ssh_string_from_char("ssh-connection");
if (service == NULL) {
ssh_set_error_oom(session);
goto error;
}
method = ssh_string_from_char("keyboard-interactive");
if (method == NULL) {
ssh_set_error_oom(session);
goto error;
rc = ssh_userauth_request_service(session);
if (rc == SSH_AGAIN) {
return SSH_AUTH_AGAIN;
} else if (rc == SSH_ERROR) {
return SSH_AUTH_ERROR;
}
if (buffer_add_u8(session->out_buffer, SSH2_MSG_USERAUTH_REQUEST) < 0 ||
buffer_add_ssh_string(session->out_buffer, usr) < 0 ||
buffer_add_ssh_string(session->out_buffer, service) < 0 ||
buffer_add_ssh_string(session->out_buffer, method) < 0 ||
buffer_add_u32(session->out_buffer, 0) < 0 ||
buffer_add_ssh_string(session->out_buffer, sub) < 0) {
ssh_set_error_oom(session);
goto error;
/* request */
rc = buffer_add_u8(session->out_buffer, SSH2_MSG_USERAUTH_REQUEST);
if (rc < 0) {
goto fail;
}
ssh_string_free(usr);
ssh_string_free(service);
ssh_string_free(method);
ssh_string_free(sub);
session->auth_state=SSH_AUTH_STATE_KBDINT_SENT;
if (packet_send(session) == SSH_ERROR) {
leave_function();
return rc;
/* username */
if (username) {
str = ssh_string_from_char(username);
} else {
str = ssh_string_from_char(session->username);
}
if (str == NULL) {
goto fail;
}
rc = buffer_add_ssh_string(session->out_buffer, str);
ssh_string_free(str);
if (rc < 0) {
goto fail;
}
/* service */
str = ssh_string_from_char("ssh-connection");
if (str == NULL) {
goto fail;
}
rc = buffer_add_ssh_string(session->out_buffer, str);
ssh_string_free(str);
if (rc < 0) {
goto fail;
}
/* method */
str = ssh_string_from_char("keyboard-interactive");
if (str == NULL) {
goto fail;
}
rc = buffer_add_ssh_string(session->out_buffer, str);
ssh_string_free(str);
if (rc < 0) {
goto fail;
}
/* lang string (ignore it) */
rc = buffer_add_u8(session->out_buffer, 0);
if (rc < 0) {
goto fail;
}
/* submethods */
str = ssh_string_from_char(submethods);
if (rc < 0) {
goto fail;
}
rc = buffer_add_ssh_string(session->out_buffer, str);
ssh_string_free(str);
if (rc < 0) {
goto fail;
}
session->auth_state = SSH_AUTH_STATE_NONE;
session->pending_call_state = SSH_PENDING_CALL_AUTH_OFFER_PUBKEY;
rc = packet_send(session);
if (rc == SSH_ERROR) {
return SSH_AUTH_ERROR;
}
rc = ssh_userauth_get_response(session);
if (rc != SSH_AUTH_AGAIN) {
session->pending_call_state = SSH_PENDING_CALL_NONE;
}
leave_function();
return rc;
error:
fail:
ssh_set_error_oom(session);
buffer_reinit(session->out_buffer);
ssh_string_free(usr);
ssh_string_free(service);
ssh_string_free(method);
ssh_string_free(sub);
leave_function();
return rc;
return SSH_AUTH_ERROR;
}
/**
@@ -1767,7 +1801,7 @@ int ssh_userauth_kbdint(ssh_session session, const char *user,
return SSH_AUTH_ERROR;
}
rc = kbdauth_init(session, user, submethods);
rc = ssh_userauth_kbdint_init(session, user, submethods);
leave_function();
return rc;