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Merge branch '3921_sftpfs_keyboard_interactive_auth'

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* 3921_sftpfs_keyboard_interactive_auth:
  Ticket #3921: enable keyboard interactive authentication.
This commit is contained in:
Andrew Borodin 2019-08-10 09:38:14 +03:00
commit bc91c2d1d1
1 changed files with 81 additions and 0 deletions
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81
src/vfs/sftpfs/connection.c
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@ -53,6 +53,10 @@
/*** file scope variables ************************************************************************/
static const char *kbi_passwd = NULL;
static const struct vfs_s_super *kbi_super = NULL;
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
@ -292,6 +296,51 @@ sftpfs_open_connection_ssh_key (struct vfs_s_super *super, GError ** mcerror)
return ret_value;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Keyboard-interactive password helper for opening connection to host by
* sftpfs_open_connection_ssh_password
*
* Uses global kbi_super (data with existing connection) and kbi_passwd (password)
*
* @param name username
* @param name_len length of @name
* @param instruction unused
* @param instruction_len unused
* @param num_prompts number of possible problems to process
* @param prompts array of prompts to process
* @param responses array of responses, one per prompt
* @param abstract unused
*/
static
LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC (sftpfs_keyboard_interactive_helper)
{
int i;
size_t len;
(void) instruction;
(void) instruction_len;
(void) abstract;
if (kbi_super == NULL || kbi_passwd == NULL)
return;
if (strncmp (name, kbi_super->path_element->user, name_len) != 0)
return;
/* assume these are password prompts */
len = strlen (kbi_passwd);
for (i = 0; i < num_prompts; ++i)
if (strncmp (prompts[i].text, "Password: ", prompts[i].length) == 0)
{
responses[i].text = strdup (kbi_passwd);
responses[i].length = len;
}
}
/* --------------------------------------------------------------------------------------------- */
/**
* Open connection to host using password.
@ -321,6 +370,22 @@ sftpfs_open_connection_ssh_password (struct vfs_s_super *super, GError ** mcerro
LIBSSH2_ERROR_EAGAIN);
if (rc == 0)
return TRUE;
kbi_super = super;
kbi_passwd = super->path_element->password;
while ((rc =
libssh2_userauth_keyboard_interactive (sftpfs_super->session,
super->path_element->user,
sftpfs_keyboard_interactive_helper)) ==
LIBSSH2_ERROR_EAGAIN)
;
kbi_super = NULL;
kbi_passwd = NULL;
if (rc == 0)
return TRUE;
}
p = g_strdup_printf (_("sftp: Enter password for %s "), super->path_element->user);
@ -335,6 +400,22 @@ sftpfs_open_connection_ssh_password (struct vfs_s_super *super, GError ** mcerro
passwd)) == LIBSSH2_ERROR_EAGAIN)
;
if (rc != 0)
{
kbi_super = super;
kbi_passwd = passwd;
while ((rc =
libssh2_userauth_keyboard_interactive (sftpfs_super->session,
super->path_element->user,
sftpfs_keyboard_interactive_helper)) ==
LIBSSH2_ERROR_EAGAIN)
;
kbi_super = NULL;
kbi_passwd = NULL;
}
if (rc == 0)
{
ret_value = TRUE;