GUACAMOLE-527: Use libssh2_knownhost_readline and remove host key type.
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parent
42044e4279
commit
551598e0a4
@ -99,7 +99,7 @@ void guac_common_ssh_uninit();
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*/
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guac_common_ssh_session* guac_common_ssh_create_session(guac_client* client,
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const char* hostname, const char* port, guac_common_ssh_user* user, int keepalive,
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const int host_key_type, const char* host_key);
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const char* host_key);
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/**
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* Disconnects and destroys the given SSH session, freeing all associated
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@ -416,7 +416,7 @@ static int guac_common_ssh_authenticate(guac_common_ssh_session* common_session)
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guac_common_ssh_session* guac_common_ssh_create_session(guac_client* client,
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const char* hostname, const char* port, guac_common_ssh_user* user, int keepalive,
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const int host_key_type, const char* host_key) {
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const char* host_key) {
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int retval;
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@ -529,9 +529,8 @@ guac_common_ssh_session* guac_common_ssh_create_session(guac_client* client,
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/* Add host key provided from settings */
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if (host_key && strcmp(host_key, "") > 0) {
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int kh_add = libssh2_knownhost_addc(ssh_known_hosts, hostname, NULL, host_key, strlen(host_key),
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NULL, 0, LIBSSH2_KNOWNHOST_TYPE_PLAIN|LIBSSH2_KNOWNHOST_KEYENC_BASE64|
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host_key_type, NULL);
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int kh_add = libssh2_knownhost_readline(ssh_known_hosts, host_key, strlen(host_key),
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LIBSSH2_KNOWNHOST_FILE_OPENSSH);
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if (kh_add)
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guac_client_log(client, GUAC_LOG_WARNING, "Failed to add provided host key"
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@ -564,7 +563,7 @@ guac_common_ssh_session* guac_common_ssh_create_session(guac_client* client,
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"Host key match found for %s", hostname);
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break;
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case LIBSSH2_KNOWNHOST_CHECK_NOTFOUND:
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guac_client_abort(client, GUAC_PROTOCOL_STATUS_SERVER_ERROR,
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guac_client_log(client, GUAC_LOG_WARNING,
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"Host key not found for %s.", hostname);
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break;
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case LIBSSH2_KNOWNHOST_CHECK_MISMATCH:
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@ -975,7 +975,7 @@ void* guac_rdp_client_thread(void* data) {
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rdp_client->sftp_session =
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guac_common_ssh_create_session(client, settings->sftp_hostname,
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settings->sftp_port, rdp_client->sftp_user, settings->sftp_server_alive_interval,
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settings->sftp_host_key_type, settings->sftp_host_key);
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settings->sftp_host_key);
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/* Fail if SSH connection does not succeed */
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if (rdp_client->sftp_session == NULL) {
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@ -360,12 +360,6 @@ enum RDP_ARGS_IDX {
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*/
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IDX_SFTP_HOSTNAME,
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/**
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* The type of public SSH host key provided. If not specified, it defaults
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* to SSH-RSA.
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*/
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IDX_SFTP_HOST_KEY_TYPE,
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/**
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* The public SSH host key of the SFTP server. Optional.
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*/
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@ -843,27 +837,6 @@ guac_rdp_settings* guac_rdp_parse_args(guac_user* user,
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guac_user_parse_args_string(user, GUAC_RDP_CLIENT_ARGS, argv,
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IDX_SFTP_HOST_KEY, NULL);
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if(settings->sftp_host_key) {
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/* Type of public SSH host key. */
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char* str_host_key_type = guac_user_parse_args_string(user, GUAC_RDP_CLIENT_ARGS, argv,
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IDX_SFTP_HOST_KEY_TYPE, "ssh-rsa");
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if (strcmp(str_host_key_type, "ssh-rsa") == 0)
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settings->sftp_host_key_type = LIBSSH2_KNOWNHOST_KEY_SSHRSA;
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else if (strcmp(str_host_key_type, "ssh-dss") == 0)
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settings->sftp_host_key_type = LIBSSH2_KNOWNHOST_KEY_SSHDSS;
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else if (strcmp(str_host_key_type, "rsa1") == 0)
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settings->sftp_host_key_type = LIBSSH2_KNOWNHOST_KEY_RSA1;
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else {
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guac_user_log(user, GUAC_LOG_WARNING, "Invalid host key type specified %s. "
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"Ignoring host key.", str_host_key_type);
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settings->sftp_host_key = NULL;
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}
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free(str_host_key_type);
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}
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/* Port for SFTP connection */
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settings->sftp_port =
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guac_user_parse_args_string(user, GUAC_RDP_CLIENT_ARGS, argv,
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@ -342,11 +342,6 @@ typedef struct guac_rdp_settings {
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*/
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char* sftp_hostname;
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/**
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* The type of the public SSH hos key.
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*/
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int sftp_host_key_type;
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/**
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* The public SSH host key.
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*/
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@ -71,11 +71,6 @@ enum SSH_ARGS_IDX {
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*/
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IDX_HOSTNAME,
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/**
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* The type of public SSH host key provided. Optional.
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*/
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IDX_HOST_KEY_TYPE,
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/**
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* The Base64-encoded public SSH host key. Optional.
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*/
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@ -264,24 +259,6 @@ guac_ssh_settings* guac_ssh_parse_args(guac_user* user,
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guac_user_parse_args_string(user, GUAC_SSH_CLIENT_ARGS, argv,
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IDX_HOST_KEY, NULL);
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if (settings->host_key) {
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char* str_host_key_type = guac_user_parse_args_string(user, GUAC_SSH_CLIENT_ARGS, argv,
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IDX_HOST_KEY_TYPE, "ssh-rsa");
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if (strcmp(str_host_key_type, "ssh-rsa") == 0)
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settings->host_key_type = LIBSSH2_KNOWNHOST_KEY_SSHRSA;
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else if (strcmp(str_host_key_type, "ssh-dss") == 0)
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settings->host_key_type = LIBSSH2_KNOWNHOST_KEY_SSHDSS;
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else if (strcmp(str_host_key_type, "rsa1") == 0)
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settings->host_key_type = LIBSSH2_KNOWNHOST_KEY_RSA1;
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else {
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guac_user_log(user, GUAC_LOG_WARNING, "Invalid host key type specified %s. "
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"Ignoring host key.", str_host_key_type);
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settings->host_key = NULL;
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}
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free(str_host_key_type);
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}
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settings->username =
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guac_user_parse_args_string(user, GUAC_SSH_CLIENT_ARGS, argv,
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IDX_USERNAME, NULL);
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@ -70,11 +70,6 @@ typedef struct guac_ssh_settings {
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*/
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char* hostname;
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/**
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* The type of public SSH host key.
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*/
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int host_key_type;
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/**
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* The public SSH host key.
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*/
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@ -236,7 +236,7 @@ void* ssh_client_thread(void* data) {
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/* Open SSH session */
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ssh_client->session = guac_common_ssh_create_session(client,
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settings->hostname, settings->port, ssh_client->user, settings->server_alive_interval,
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settings->host_key_type, settings->host_key);
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settings->host_key);
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if (ssh_client->session == NULL) {
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/* Already aborted within guac_common_ssh_create_session() */
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return NULL;
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@ -277,7 +277,7 @@ void* ssh_client_thread(void* data) {
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ssh_client->sftp_session =
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guac_common_ssh_create_session(client, settings->hostname,
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settings->port, ssh_client->user, settings->server_alive_interval,
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settings->host_key_type, settings->host_key);
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settings->host_key);
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if (ssh_client->sftp_session == NULL) {
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/* Already aborted within guac_common_ssh_create_session() */
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return NULL;
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@ -211,11 +211,6 @@ enum VNC_ARGS_IDX {
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*/
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IDX_SFTP_USERNAME,
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/**
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* The type of public SSH host key provided to identify the SFTP server.
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*/
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IDX_SFTP_HOST_KEY_TYPE,
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/**
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* The public SSH host key to identify the SFTP server.
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*/
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@ -429,27 +424,6 @@ guac_vnc_settings* guac_vnc_parse_args(guac_user* user,
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guac_user_parse_args_string(user, GUAC_VNC_CLIENT_ARGS, argv,
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IDX_SFTP_HOST_KEY, NULL);
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if(settings->sftp_host_key) {
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/* Type of public SSH host key. */
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char* str_host_key_type = guac_user_parse_args_string(user, GUAC_VNC_CLIENT_ARGS, argv,
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IDX_SFTP_HOST_KEY_TYPE, "ssh-rsa");
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if (strcmp(str_host_key_type, "ssh-rsa") == 0)
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settings->sftp_host_key_type = LIBSSH2_KNOWNHOST_KEY_SSHRSA;
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else if (strcmp(str_host_key_type, "ssh-dss") == 0)
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settings->sftp_host_key_type = LIBSSH2_KNOWNHOST_KEY_SSHDSS;
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else if (strcmp(str_host_key_type, "rsa1") == 0)
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settings->sftp_host_key_type = LIBSSH2_KNOWNHOST_KEY_RSA1;
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else {
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guac_user_log(user, GUAC_LOG_WARNING, "Invalid host key type specified %s. "
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"Ignoring host key.", str_host_key_type);
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settings->sftp_host_key = NULL;
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}
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free(str_host_key_type);
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}
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/* Port for SFTP connection */
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settings->sftp_port =
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guac_user_parse_args_string(user, GUAC_VNC_CLIENT_ARGS, argv,
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@ -138,11 +138,6 @@ typedef struct guac_vnc_settings {
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*/
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char* sftp_hostname;
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/**
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* The type of public SSH host key provided.
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*/
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int sftp_host_key_type;
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/**
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* The public SSH host key.
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*/
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@ -262,7 +262,7 @@ void* guac_vnc_client_thread(void* data) {
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vnc_client->sftp_session =
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guac_common_ssh_create_session(client, settings->sftp_hostname,
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settings->sftp_port, vnc_client->sftp_user, settings->sftp_server_alive_interval,
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settings->sftp_host_key_type, settings->sftp_host_key);
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settings->sftp_host_key);
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/* Fail if SSH connection does not succeed */
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if (vnc_client->sftp_session == NULL) {
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