diff options
Diffstat (limited to 'usr.bin/ssh/clientloop.c')
| -rw-r--r-- | usr.bin/ssh/clientloop.c | 205 |
1 files changed, 102 insertions, 103 deletions
diff --git a/usr.bin/ssh/clientloop.c b/usr.bin/ssh/clientloop.c index 59dad3d7d30..a5bfa0a5b49 100644 --- a/usr.bin/ssh/clientloop.c +++ b/usr.bin/ssh/clientloop.c @@ -15,7 +15,7 @@ */ #include "includes.h" -RCSID("$Id: clientloop.c,v 1.14 1999/12/06 20:15:26 deraadt Exp $"); +RCSID("$Id: clientloop.c,v 1.15 2000/03/28 20:31:26 markus Exp $"); #include "xmalloc.h" #include "ssh.h" @@ -24,6 +24,11 @@ RCSID("$Id: clientloop.c,v 1.14 1999/12/06 20:15:26 deraadt Exp $"); #include "authfd.h" #include "readconf.h" +#include "compat.h" +#include "channels.h" +#include "dispatch.h" + + /* Flag indicating that stdin should be redirected from /dev/null. */ extern int stdin_null_flag; @@ -228,108 +233,6 @@ client_check_initial_eof_on_stdin() } } -/* - * Get packets from the connection input buffer, and process them as long as - * there are packets available. - */ - -void -client_process_buffered_input_packets() -{ - int type; - char *data; - unsigned int data_len; - int payload_len; - - /* Process any buffered packets from the server. */ - while (!quit_pending && - (type = packet_read_poll(&payload_len)) != SSH_MSG_NONE) { - switch (type) { - - case SSH_SMSG_STDOUT_DATA: - data = packet_get_string(&data_len); - packet_integrity_check(payload_len, 4 + data_len, type); - buffer_append(&stdout_buffer, data, data_len); - stdout_bytes += data_len; - memset(data, 0, data_len); - xfree(data); - break; - - case SSH_SMSG_STDERR_DATA: - data = packet_get_string(&data_len); - packet_integrity_check(payload_len, 4 + data_len, type); - buffer_append(&stderr_buffer, data, data_len); - stdout_bytes += data_len; - memset(data, 0, data_len); - xfree(data); - break; - - case SSH_SMSG_EXITSTATUS: - packet_integrity_check(payload_len, 4, type); - exit_status = packet_get_int(); - /* Acknowledge the exit. */ - packet_start(SSH_CMSG_EXIT_CONFIRMATION); - packet_send(); - /* - * Must wait for packet to be sent since we are - * exiting the loop. - */ - packet_write_wait(); - /* Flag that we want to exit. */ - quit_pending = 1; - break; - - case SSH_SMSG_X11_OPEN: - x11_input_open(payload_len); - break; - - case SSH_MSG_PORT_OPEN: - channel_input_port_open(payload_len); - break; - - case SSH_SMSG_AGENT_OPEN: - packet_integrity_check(payload_len, 4, type); - auth_input_open_request(); - break; - - case SSH_MSG_CHANNEL_OPEN_CONFIRMATION: - packet_integrity_check(payload_len, 4 + 4, type); - channel_input_open_confirmation(); - break; - - case SSH_MSG_CHANNEL_OPEN_FAILURE: - packet_integrity_check(payload_len, 4, type); - channel_input_open_failure(); - break; - - case SSH_MSG_CHANNEL_DATA: - channel_input_data(payload_len); - break; - - case SSH_MSG_CHANNEL_CLOSE: - packet_integrity_check(payload_len, 4, type); - channel_input_close(); - break; - - case SSH_MSG_CHANNEL_CLOSE_CONFIRMATION: - packet_integrity_check(payload_len, 4, type); - channel_input_close_confirmation(); - break; - - default: - /* - * Any unknown packets received during the actual - * session cause the session to terminate. This is - * intended to make debugging easier since no - * confirmations are sent. Any compatible protocol - * extensions must be negotiated during the - * preparatory phase. - */ - packet_disconnect("Protocol error during session: type %d", - type); - } - } -} /* * Make packets from buffered stdin data, and buffer them for sending to the @@ -776,12 +679,32 @@ client_process_output(fd_set * writeset) } /* + * Get packets from the connection input buffer, and process them as long as + * there are packets available. + * + * Any unknown packets received during the actual + * session cause the session to terminate. This is + * intended to make debugging easier since no + * confirmations are sent. Any compatible protocol + * extensions must be negotiated during the + * preparatory phase. + */ + +void +client_process_buffered_input_packets() +{ + dispatch_run(DISPATCH_NONBLOCK, &quit_pending); +} + +/* * Implements the interactive session with the server. This is called after * the user has been authenticated, and a command has been started on the * remote host. If escape_char != -1, it is the character used as an escape * character for terminating or suspending the session. */ +void client_init_dispatch(void); + int client_loop(int have_pty, int escape_char_arg) { @@ -816,6 +739,8 @@ client_loop(int have_pty, int escape_char_arg) buffer_init(&stdout_buffer); buffer_init(&stderr_buffer); + client_init_dispatch(); + /* Set signal handlers to restore non-blocking mode. */ signal(SIGINT, signal_handler); signal(SIGQUIT, signal_handler); @@ -950,3 +875,77 @@ client_loop(int have_pty, int escape_char_arg) debug("Exit status %d", exit_status); return exit_status; } + +/*********/ + +void +client_input_stdout_data(int type, int plen) +{ + unsigned int data_len; + char *data = packet_get_string(&data_len); + packet_integrity_check(plen, 4 + data_len, type); + buffer_append(&stdout_buffer, data, data_len); + stdout_bytes += data_len; + memset(data, 0, data_len); + xfree(data); +} +void +client_input_stderr_data(int type, int plen) +{ + unsigned int data_len; + char *data = packet_get_string(&data_len); + packet_integrity_check(plen, 4 + data_len, type); + buffer_append(&stderr_buffer, data, data_len); + stdout_bytes += data_len; + memset(data, 0, data_len); + xfree(data); +} +void +client_input_exit_status(int type, int plen) +{ + packet_integrity_check(plen, 4, type); + exit_status = packet_get_int(); + /* Acknowledge the exit. */ + packet_start(SSH_CMSG_EXIT_CONFIRMATION); + packet_send(); + /* + * Must wait for packet to be sent since we are + * exiting the loop. + */ + packet_write_wait(); + /* Flag that we want to exit. */ + quit_pending = 1; +} + +void +client_init_dispatch_13() +{ + dispatch_init(NULL); + dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_close); + dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, &channel_input_close_confirmation); + dispatch_set(SSH_MSG_CHANNEL_DATA, &channel_input_data); + dispatch_set(SSH_MSG_CHANNEL_DATA, &channel_input_data); + dispatch_set(SSH_MSG_CHANNEL_OPEN_CONFIRMATION, &channel_input_open_confirmation); + dispatch_set(SSH_MSG_CHANNEL_OPEN_FAILURE, &channel_input_open_failure); + dispatch_set(SSH_MSG_PORT_OPEN, &channel_input_port_open); + dispatch_set(SSH_SMSG_AGENT_OPEN, &auth_input_open_request); + dispatch_set(SSH_SMSG_EXITSTATUS, &client_input_exit_status); + dispatch_set(SSH_SMSG_STDERR_DATA, &client_input_stderr_data); + dispatch_set(SSH_SMSG_STDOUT_DATA, &client_input_stdout_data); + dispatch_set(SSH_SMSG_X11_OPEN, &x11_input_open); +} +void +client_init_dispatch_15() +{ + client_init_dispatch_13(); + dispatch_set(SSH_MSG_CHANNEL_CLOSE, &channel_input_ieof); + dispatch_set(SSH_MSG_CHANNEL_CLOSE_CONFIRMATION, & channel_input_oclose); +} +void +client_init_dispatch() +{ + if (compat13) + client_init_dispatch_13(); + else + client_init_dispatch_15(); +} |