lib/libssh
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Handle global requests and reverse forwarding

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This commit is contained in:
milo
2010-09-29 17:45:04 +02:00
committed by Aris Adamantiadis
parent c4356531f7
commit 26d40b5354
7 changed files with 242 additions and 2 deletions
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58
src/server.c
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@@ -890,6 +890,54 @@ int ssh_message_service_reply_success(ssh_message msg) {
return packet_send(msg->session);
}
int ssh_message_global_request_reply_success(ssh_message msg, uint16_t bound_port) {
ssh_log(msg->session, SSH_LOG_FUNCTIONS, "Accepting a global request");
if (msg->global_request.want_reply) {
if (buffer_add_u8(msg->session->out_buffer
, SSH2_MSG_REQUEST_SUCCESS) < 0) {
goto error;
}
if(msg->global_request.type == SSH_GLOBAL_REQUEST_TCPIP_FORWARD
&& msg->global_request.bind_port == 0) {
if (buffer_add_u32(msg->session->out_buffer, htonl(bound_port)) < 0) {
goto error;
}
}
return packet_send(msg->session);
}
if(msg->global_request.type == SSH_GLOBAL_REQUEST_TCPIP_FORWARD
&& msg->global_request.bind_port == 0) {
ssh_log(msg->session, SSH_LOG_PACKET,
"The client doesn't want to know the remote port!");
}
return SSH_OK;
error:
return SSH_ERROR;
}
static int ssh_message_global_request_reply_default(ssh_message msg) {
ssh_log(msg->session, SSH_LOG_FUNCTIONS, "Refusing a global request");
if (msg->global_request.want_reply) {
if (buffer_add_u8(msg->session->out_buffer
, SSH2_MSG_REQUEST_FAILURE) < 0) {
goto error;
}
return packet_send(msg->session);
}
ssh_log(msg->session, SSH_LOG_PACKET,
"The client doesn't want to know the request failed!");
return SSH_OK;
error:
return SSH_ERROR;
}
int ssh_message_reply_default(ssh_message msg) {
if (msg == NULL) {
return -1;
@@ -904,6 +952,8 @@ int ssh_message_reply_default(ssh_message msg) {
return ssh_message_channel_request_reply_default(msg);
case SSH_REQUEST_SERVICE:
return ssh_message_service_request_reply_default(msg);
case SSH_REQUEST_GLOBAL:
return ssh_message_global_request_reply_default(msg);
default:
ssh_log(msg->session, SSH_LOG_PACKET,
"Don't know what to default reply to %d type",
@@ -1063,6 +1113,14 @@ char *ssh_message_channel_request_subsystem(ssh_message msg){
return msg->channel_request.subsystem;
}
char *ssh_message_global_request_address(ssh_message msg){
return msg->global_request.bind_address;
}
int ssh_message_global_request_port(ssh_message msg){
return msg->global_request.bind_port;
}
/** @brief defines the SSH_MESSAGE callback
* @param session the current ssh session
* @param[in] ssh_message_callback_ a function pointer to a callback taking the