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Code Activity

feat: implement proxy jump using libssh

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tests: modify proxyjump tests to check for ssh_jump_info_struct

tests: add proxyjump functionality test

feat: add SSH_OPTIONS_PROXYJUMP

tests: proxyjump, check authentication

fix: ssh_socket_connect_proxyjump add exit label to exit on error

feat: implement io forwarding using pthread

feat: proxyjump: use threading instead of forking

feat: proxyjump: cancel forwarding threads on ssh_disconnect

fix: proxyjump remove ProxyJump bool and put pthread ifdefs

feat: use ssh_event for io forwarding instead of threads

reformat: tests to use assert_int_not_equal

fix: link to pthread

refactor: make function to free proxy jump list

docs: add comment for proxy jump channel

feat: add env variable to enable libssh proxy jump

feat: open channel for proxyjump like OpenSSH

feat: add more tests for proxy jump

fix: use a global variable to close io forwarding, this prevents segfaults

fix: handle proxy list in thread without creating copy
Signed-off-by: Gauravsingh Sisodia <xaerru@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Eshan Kelkar <eshankelkar@galorithm.com>
This commit is contained in:
Gauravsingh Sisodia
2024-02-28 17:20:52 +00:00
committed by Sahana Prasad
parent fe53cdfabd
commit 6d1ed76c7a
20 changed files with 1006 additions and 65 deletions
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41
src/options.c
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@@ -512,6 +512,20 @@ int ssh_options_set_algo(ssh_session session,
* Set the command to be executed in order to connect to
* server (const char *).
*
* - SSH_OPTIONS_PROXYJUMP:
* Set the comma separated jump hosts in order to connect to
* server (const char *). Set to "none" to disable.
* Example:
* "alice@127.0.0.1:5555,bob@127.0.0.2"
*
* If environment variable OPENSSH_PROXYJUMP is set to 1 then proxyjump will be
* handled by the OpenSSH binary.
*
* - SSH_OPTIONS_PROXYJUMP_CB_LIST_APPEND:
* Append the callbacks struct for a jump in order of
* SSH_OPTIONS_PROXYJUMP. Append as many times
* as the number of jumps (struct ssh_jump_callbacks_struct *).
*
* - SSH_OPTIONS_GSSAPI_SERVER_IDENTITY
* Set it to specify the GSSAPI server identity that libssh
* should expect when connecting to the server (const char *).
@@ -637,6 +651,7 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
unsigned int u;
int rc;
char **wanted_methods = session->opts.wanted_methods;
struct ssh_jump_callbacks_struct *j = NULL;
if (session == NULL) {
return -1;
@@ -1123,6 +1138,32 @@ int ssh_options_set(ssh_session session, enum ssh_options_e type,
}
}
break;
case SSH_OPTIONS_PROXYJUMP:
v = value;
if (v == NULL || v[0] == '\0') {
ssh_set_error_invalid(session);
return -1;
} else {
ssh_proxyjumps_free(session->opts.proxy_jumps);
rc = ssh_config_parse_proxy_jump(session, v, true);
if (rc != SSH_OK) {
return SSH_ERROR;
}
}
break;
case SSH_OPTIONS_PROXYJUMP_CB_LIST_APPEND:
j = (struct ssh_jump_callbacks_struct *)value;
if (j == NULL) {
ssh_set_error_invalid(session);
return -1;
} else {
rc = ssh_list_prepend(session->opts.proxy_jumps_user_cb, j);
if (rc != SSH_OK) {
ssh_set_error_oom(session);
return SSH_ERROR;
}
}
break;
case SSH_OPTIONS_GSSAPI_SERVER_IDENTITY:
v = value;
if (v == NULL || v[0] == '\0') {