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Improve ssh_userauth_none().

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git-svn-id: svn+ssh://svn.berlios.de/svnroot/repos/libssh/trunk@665 7dcaeef0-15fb-0310-b436-a5af3365683c
This commit is contained in:
Andreas Schneider
2009-04-30 14:34:36 +00:00
parent 83971c0188
commit 0881ba13d6
1 changed files with 77 additions and 69 deletions
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146
libssh/auth.c
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@@ -182,88 +182,96 @@ int ssh_userauth_list(SSH_SESSION *session, const char *username) {
/* use the "none" authentication question */
/** \brief Try to authenticate through the "none" method
* \param session ssh session
* \param username username to authenticate. You can specify NULL if
* ssh_option_set_username() has been used. You cannot try two different logins in a row.
* \returns SSH_AUTH_ERROR : a serious error happened\n
* SSH_AUTH_DENIED : Authentication failed : use another method\n
* SSH_AUTH_PARTIAL : You've been partially authenticated, you still have to use another method\n
* SSH_AUTH_SUCCESS : Authentication success
/**
* @brief Try to authenticate through the "none" method.
*
* @param session The ssh session to use.
*
* @param username The username to authenticate. You can specify NULL if
* ssh_option_set_username() has been used. You cannot try
* two different logins in a row.
*
* @returns SSH_AUTH_ERROR: A serious error happened.\n
* SSH_AUTH_DENIED: Authentication failed: use another method\n
* SSH_AUTH_PARTIAL: You've been partially authenticated, you still
* have to use another method\n
* SSH_AUTH_SUCCESS: Authentication success
*/
int ssh_userauth_none(SSH_SESSION *session, const char *username) {
STRING *user = NULL;
STRING *service;
STRING *method;
int rc = SSH_AUTH_ERROR;
int ssh_userauth_none(SSH_SESSION *session, const char *username){
STRING *user = NULL;
STRING *service = NULL;
STRING *method = NULL;
int rc = SSH_AUTH_ERROR;
enter_function();
enter_function();
#ifdef HAVE_SSH1
if(session->version==1){
ssh_userauth1_none(session,username);
if (session->version == 1) {
ssh_userauth1_none(session, username);
leave_function();
return rc;
}
#endif
if (username == NULL) {
if (session->options->username == NULL) {
if (ssh_options_default_username(session->options) < 0) {
leave_function();
return rc;
}
}
#endif
if(!username)
if(!(username=session->options->username)){
if(ssh_options_default_username(session->options)){
leave_function();
return rc;
} else
username=session->options->username;
}
if (ask_userauth(session)) {
leave_function();
return rc;
}
user = string_from_char(session->options->username);
} else {
user = string_from_char(username);
if (user == NULL) {
goto error;
}
method = string_from_char("none");
if (method == NULL) {
goto error;
}
service = string_from_char("ssh-connection");
if (service == NULL) {
goto error;
}
if (buffer_add_u8(session->out_buffer, SSH2_MSG_USERAUTH_REQUEST) < 0) {
goto error;
}
if (buffer_add_ssh_string(session->out_buffer, user) < 0) {
goto error;
}
if (buffer_add_ssh_string(session->out_buffer, service) < 0) {
goto error;
}
if (buffer_add_ssh_string(session->out_buffer, method) < 0) {
goto error;
}
string_free(service);
string_free(method);
string_free(user);
if (packet_send(session) != SSH_OK) {
leave_function();
return rc;
}
rc = wait_auth_status(session, 0);
}
if (user == NULL) {
leave_function();
return rc;
}
if (ask_userauth(session) < 0) {
string_free(user);
leave_function();
return rc;
}
method = string_from_char("none");
if (method == NULL) {
goto error;
}
service = string_from_char("ssh-connection");
if (service == NULL) {
goto error;
}
if (buffer_add_u8(session->out_buffer, SSH2_MSG_USERAUTH_REQUEST) < 0 ||
buffer_add_ssh_string(session->out_buffer, user) < 0 ||
buffer_add_ssh_string(session->out_buffer, service) < 0 ||
buffer_add_ssh_string(session->out_buffer, method) < 0) {
goto error;
}
string_free(service);
string_free(method);
string_free(user);
if (packet_send(session) != SSH_OK) {
leave_function();
return rc;
}
rc = wait_auth_status(session, 0);
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
string_free(service);
string_free(method);
string_free(user);
buffer_free(session->out_buffer);
string_free(service);
string_free(method);
string_free(user);
leave_function();
return rc;
leave_function();
return rc;
}
/** \brief Try to authenticate through public key