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dirmngr: Further simplify the http code and improve a message.

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* dirmngr/http.c (make_fp_write, make_fp_read): New.
(http_raw_connect): Use new functions.
(http_wait_response): Ditto.
(send_request): Ditto.  Change proxy error diagnostic.
(connect_server): Improve error message for host not found.
--

GnuPG-bug-id: 5768
This commit is contained in:
Werner Koch 2023-09-19 12:49:04 +02:00
parent 845d5e61d8
commit fed33baed1
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
1 changed files with 100 additions and 126 deletions
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182
dirmngr/http.c
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@ -746,6 +746,64 @@ http_session_release (http_session_t sess)
}
/* Create a write stream and store it in the fp_write member. Also
* store the tls flag and the session. */
static gpg_error_t
make_fp_write (http_t hd, int use_tls, http_session_t session)
{
cookie_t cookie;
cookie = xtrycalloc (1, sizeof *cookie);
if (!cookie)
return gpg_error_from_syserror ();
cookie->sock = my_socket_ref (hd->sock);
cookie->use_tls = use_tls;
if (session)
cookie->session = http_session_ref (session);
hd->fp_write = es_fopencookie (cookie, "w", cookie_functions);
if (!hd->fp_write)
{
gpg_error_t err = gpg_error_from_syserror ();
my_socket_unref (cookie->sock, NULL, NULL);
if (session)
http_session_unref (cookie->session);
xfree (cookie);
return err;
}
hd->write_cookie = cookie; /* Cookie now owned by FP_WRITE. */
return 0;
}
/* Create a read stream and store it in the fp_read member. Also
* store the tls flag and the session. */
static gpg_error_t
make_fp_read (http_t hd, int use_tls, http_session_t session)
{
cookie_t cookie;
cookie = xtrycalloc (1, sizeof *cookie);
if (!cookie)
return gpg_error_from_syserror ();
cookie->sock = my_socket_ref (hd->sock);
cookie->use_tls = use_tls;
if (session)
cookie->session = http_session_ref (session);
hd->fp_read = es_fopencookie (cookie, "r", cookie_functions);
if (!hd->fp_read)
{
gpg_error_t err = gpg_error_from_syserror ();
my_socket_unref (cookie->sock, NULL, NULL);
if (session)
http_session_unref (cookie->session);
xfree (cookie);
return err;
}
hd->read_cookie = cookie; /* Cookie now owned by FP_READ. */
return 0;
}
/* Create a new session object which is currently used to enable TLS
* support. It may eventually allow reusing existing connections.
* Valid values for FLAGS are:
@ -1038,7 +1096,6 @@ http_raw_connect (ctrl_t ctrl, http_t *r_hd,
{
gpg_error_t err = 0;
http_t hd;
cookie_t cookie;
*r_hd = NULL;
@ -1086,39 +1143,13 @@ http_raw_connect (ctrl_t ctrl, http_t *r_hd,
}
/* Setup estreams for reading and writing. */
cookie = xtrycalloc (1, sizeof *cookie);
if (!cookie)
{
err = gpg_err_make (default_errsource, gpg_err_code_from_syserror ());
err = make_fp_write (hd, 0, NULL);
if (err)
goto leave;
}
cookie->sock = my_socket_ref (hd->sock);
hd->fp_write = es_fopencookie (cookie, "w", cookie_functions);
if (!hd->fp_write)
{
err = gpg_err_make (default_errsource, gpg_err_code_from_syserror ());
my_socket_unref (cookie->sock, NULL, NULL);
xfree (cookie);
goto leave;
}
hd->write_cookie = cookie; /* Cookie now owned by FP_WRITE. */
cookie = xtrycalloc (1, sizeof *cookie);
if (!cookie)
{
err = gpg_err_make (default_errsource, gpg_err_code_from_syserror ());
err = make_fp_read (hd, 0, NULL);
if (err)
goto leave;
}
cookie->sock = my_socket_ref (hd->sock);
hd->fp_read = es_fopencookie (cookie, "r", cookie_functions);
if (!hd->fp_read)
{
err = gpg_err_make (default_errsource, gpg_err_code_from_syserror ());
my_socket_unref (cookie->sock, NULL, NULL);
xfree (cookie);
goto leave;
}
hd->read_cookie = cookie; /* Cookie now owned by FP_READ. */
/* Register close notification to interlock the use of es_fclose in
http_close and in user code. */
@ -1190,24 +1221,9 @@ http_wait_response (http_t hd)
hd->in_data = 0;
/* Create a new cookie and a stream for reading. */
cookie = xtrycalloc (1, sizeof *cookie);
if (!cookie)
return gpg_err_make (default_errsource, gpg_err_code_from_syserror ());
cookie->sock = my_socket_ref (hd->sock);
cookie->session = http_session_ref (hd->session);
cookie->use_tls = use_tls;
hd->read_cookie = cookie;
hd->fp_read = es_fopencookie (cookie, "r", cookie_functions);
if (!hd->fp_read)
{
err = gpg_err_make (default_errsource, gpg_err_code_from_syserror ());
my_socket_unref (cookie->sock, NULL, NULL);
http_session_unref (cookie->session);
xfree (cookie);
hd->read_cookie = NULL;
err = make_fp_read (hd, use_tls, hd->session);
if (err)
return err;
}
err = parse_response (hd);
@ -2166,8 +2182,6 @@ send_request (ctrl_t ctrl,
char *authstr = NULL;
assuan_fd_t sock;
proxy_info_t proxy = NULL;
cookie_t cookie = NULL;
cookie_t cookie2 = NULL;
err = send_request_basic_checks (hd);
if (err)
@ -2247,21 +2261,9 @@ send_request (ctrl_t ctrl,
if (opt_debug || (hd->flags & HTTP_FLAG_LOG_RESP))
log_debug_string (request, "http.c:request:");
cookie = xtrycalloc (1, sizeof *cookie);
if (!cookie)
{
err = gpg_error_from_syserror ();
err = make_fp_write (hd, 0, NULL);
if (err)
goto leave;
}
cookie->sock = my_socket_ref (hd->sock);
hd->write_cookie = cookie;
hd->fp_write = es_fopencookie (cookie, "w", cookie_functions);
if (! hd->fp_write)
{
err = gpg_error_from_syserror ();
goto leave;
}
if (es_fputs (request, hd->fp_write) || es_fflush (hd->fp_write))
{
@ -2290,16 +2292,13 @@ send_request (ctrl_t ctrl,
if (hd->status_code != 200)
{
xfree (request);
request = es_bsprintf
("CONNECT %s:%hu",
httphost ? httphost : server,
port);
char *tmpstr;
tmpstr = es_bsprintf ("%s:%hu", httphost ? httphost : server, port);
log_error (_("error accessing '%s': http status %u\n"),
request ? request : "out of core",
tmpstr ? tmpstr : "out of core",
http_get_status_code (hd));
xfree (tmpstr);
err = gpg_error (GPG_ERR_NO_DATA);
goto leave;
}
@ -2318,7 +2317,6 @@ send_request (ctrl_t ctrl,
#else
err = 0;
#endif
if (err)
goto leave;
@ -2423,24 +2421,10 @@ send_request (ctrl_t ctrl,
/* First setup estream so that we can write even the first line
using estream. This is also required for the sake of gnutls. */
{
cookie2 = xtrycalloc (1, sizeof *cookie);
if (!cookie2)
{
err = gpg_error_from_syserror ();
err = make_fp_write (hd, hd->uri->use_tls, hd->session);
if (err)
goto leave;
}
cookie2->sock = my_socket_ref (hd->sock);
hd->write_cookie = cookie2;
cookie2->use_tls = hd->uri->use_tls;
cookie2->session = http_session_ref (hd->session);
hd->fp_write = es_fopencookie (cookie, "w", cookie_functions);
if (!hd->fp_write)
{
err = gpg_error_from_syserror ();
goto leave;
}
if (es_fputs (request, hd->fp_write) || es_fflush (hd->fp_write))
{
err = gpg_error_from_syserror ();
@ -2458,24 +2442,8 @@ send_request (ctrl_t ctrl,
goto leave;
}
}
}
leave:
if (cookie2)
{
my_socket_unref (cookie2->sock, NULL, NULL);
if (hd)
hd->write_cookie = NULL;
xfree (cookie2);
}
if (cookie)
{
my_socket_unref (cookie->sock, NULL, NULL);
if (hd)
hd->write_cookie = NULL;
xfree (cookie);
}
es_free (request);
xfree (authstr);
xfree (proxy_authstr);
@ -3231,8 +3199,14 @@ connect_server (ctrl_t ctrl, const char *server, unsigned short port,
if (!connected)
{
if (!hostfound)
{
log_error ("can't connect to '%s': %s\n",
server, "host not found");
/* If the resolver told us "no name" translate this in this
* case to "unknown host". */
if (gpg_err_code (last_err) == GPG_ERR_NO_NAME)
last_err = 0;
}
else if (!anyhostaddr)
log_error ("can't connect to '%s': %s\n",
server, "no IP address for host");