version 1.228, 2004/09/23 13:00:04 |
version 1.229, 2004/11/07 00:01:46 |
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/* fd to control socket */ |
/* fd to control socket */ |
int control_fd = -1; |
int control_fd = -1; |
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/* Multiplexing control command */ |
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static u_int mux_command = SSHMUX_COMMAND_OPEN; |
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/* Only used in control client mode */ |
/* Only used in control client mode */ |
volatile sig_atomic_t control_client_terminate = 0; |
volatile sig_atomic_t control_client_terminate = 0; |
u_int control_server_pid = 0; |
u_int control_server_pid = 0; |
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again: |
again: |
while ((opt = getopt(ac, av, |
while ((opt = getopt(ac, av, |
"1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:MNPR:S:TVXY")) != -1) { |
"1246ab:c:e:fgi:kl:m:no:p:qstvxACD:F:I:L:MNO:PR:S:TVXY")) != -1) { |
switch (opt) { |
switch (opt) { |
case '1': |
case '1': |
options.protocol = SSH_PROTO_1; |
options.protocol = SSH_PROTO_1; |
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case 'g': |
case 'g': |
options.gateway_ports = 1; |
options.gateway_ports = 1; |
break; |
break; |
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case 'O': |
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if (strcmp(optarg, "check") == 0) |
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mux_command = SSHMUX_COMMAND_ALIVE_CHECK; |
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else if (strcmp(optarg, "exit") == 0) |
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mux_command = SSHMUX_COMMAND_TERMINATE; |
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else |
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fatal("Invalid multiplex command."); |
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break; |
case 'P': /* deprecated */ |
case 'P': /* deprecated */ |
options.use_privileged_port = 0; |
options.use_privileged_port = 0; |
break; |
break; |
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struct sockaddr_un addr; |
struct sockaddr_un addr; |
int i, r, fd, sock, exitval, num_env; |
int i, r, fd, sock, exitval, num_env; |
Buffer m; |
Buffer m; |
char *cp; |
char *term; |
extern char **environ; |
extern char **environ; |
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u_int flags; |
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if (stdin_null_flag) { |
if (stdin_null_flag) { |
if ((fd = open(_PATH_DEVNULL, O_RDONLY)) == -1) |
if ((fd = open(_PATH_DEVNULL, O_RDONLY)) == -1) |
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if (connect(sock, (struct sockaddr*)&addr, addr.sun_len) == -1) |
if (connect(sock, (struct sockaddr*)&addr, addr.sun_len) == -1) |
fatal("Couldn't connect to %s: %s", path, strerror(errno)); |
fatal("Couldn't connect to %s: %s", path, strerror(errno)); |
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if ((cp = getenv("TERM")) == NULL) |
if ((term = getenv("TERM")) == NULL) |
cp = ""; |
term = ""; |
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flags = 0; |
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if (tty_flag) |
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flags |= SSHMUX_FLAG_TTY; |
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if (subsystem_flag) |
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flags |= SSHMUX_FLAG_SUBSYS; |
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buffer_init(&m); |
buffer_init(&m); |
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/* Get PID of controlee */ |
/* Send our command to server */ |
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buffer_put_int(&m, mux_command); |
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buffer_put_int(&m, flags); |
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if (ssh_msg_send(sock, /* version */1, &m) == -1) |
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fatal("%s: msg_send", __func__); |
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buffer_clear(&m); |
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/* Get authorisation status and PID of controlee */ |
if (ssh_msg_recv(sock, &m) == -1) |
if (ssh_msg_recv(sock, &m) == -1) |
fatal("%s: msg_recv", __func__); |
fatal("%s: msg_recv", __func__); |
if (buffer_get_char(&m) != 0) |
if (buffer_get_char(&m) != 1) |
fatal("%s: wrong version", __func__); |
fatal("%s: wrong version", __func__); |
/* Connection allowed? */ |
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if (buffer_get_int(&m) != 1) |
if (buffer_get_int(&m) != 1) |
fatal("Connection to master denied"); |
fatal("Connection to master denied"); |
control_server_pid = buffer_get_int(&m); |
control_server_pid = buffer_get_int(&m); |
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buffer_clear(&m); |
buffer_clear(&m); |
buffer_put_int(&m, tty_flag); |
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buffer_put_int(&m, subsystem_flag); |
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buffer_put_cstring(&m, cp); |
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switch (mux_command) { |
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case SSHMUX_COMMAND_ALIVE_CHECK: |
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fprintf(stderr, "Master running (pid=%d)\r\n", |
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control_server_pid); |
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exit(0); |
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case SSHMUX_COMMAND_TERMINATE: |
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fprintf(stderr, "Exit request sent.\r\n"); |
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exit(0); |
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case SSHMUX_COMMAND_OPEN: |
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/* continue below */ |
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break; |
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default: |
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fatal("silly mux_command %d", mux_command); |
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} |
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/* SSHMUX_COMMAND_OPEN */ |
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buffer_put_cstring(&m, term); |
buffer_append(&command, "\0", 1); |
buffer_append(&command, "\0", 1); |
buffer_put_cstring(&m, buffer_ptr(&command)); |
buffer_put_cstring(&m, buffer_ptr(&command)); |
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} |
} |
} |
} |
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if (ssh_msg_send(sock, /* version */0, &m) == -1) |
if (ssh_msg_send(sock, /* version */1, &m) == -1) |
fatal("%s: msg_send", __func__); |
fatal("%s: msg_send", __func__); |
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mm_send_fd(sock, STDIN_FILENO); |
mm_send_fd(sock, STDIN_FILENO); |
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buffer_clear(&m); |
buffer_clear(&m); |
if (ssh_msg_recv(sock, &m) == -1) |
if (ssh_msg_recv(sock, &m) == -1) |
fatal("%s: msg_recv", __func__); |
fatal("%s: msg_recv", __func__); |
if (buffer_get_char(&m) != 0) |
if (buffer_get_char(&m) != 1) |
fatal("%s: master returned error", __func__); |
fatal("%s: wrong version", __func__); |
buffer_free(&m); |
buffer_free(&m); |
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signal(SIGHUP, control_client_sighandler); |
signal(SIGHUP, control_client_sighandler); |