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-rw-r--r--dirmngr/t-http.c497
1 files changed, 497 insertions, 0 deletions
diff --git a/dirmngr/t-http.c b/dirmngr/t-http.c
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+++ b/dirmngr/t-http.c
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+/* t-http.c
+ * Copyright (C) 1999, 2001, 2002, 2003, 2004, 2006, 2009, 2010,
+ * 2011 Free Software Foundation, Inc.
+ * Copyright (C) 2014 Werner Koch
+ *
+ * This file is part of GnuPG.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of either
+ *
+ * - the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at
+ * your option) any later version.
+ *
+ * or
+ *
+ * - the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * or both in parallel, as here.
+ *
+ * This file is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <assuan.h>
+
+#include "../common/util.h"
+#include "../common/logging.h"
+#include "dns-stuff.h"
+#include "http.h"
+
+#include <ksba.h>
+#if HTTP_USE_NTBTLS
+# include <ntbtls.h>
+#elif HTTP_USE_GNUTLS
+# include <gnutls/gnutls.h> /* For init, logging, and deinit. */
+#endif /*HTTP_USE_GNUTLS*/
+
+#define PGM "t-http"
+
+static int verbose;
+static int debug;
+static int no_verify;
+
+/* static void */
+/* read_dh_params (const char *fname) */
+/* { */
+/* gpg_error_t err; */
+/* int rc; */
+/* FILE *fp; */
+/* struct stat st; */
+/* char *buf; */
+/* size_t buflen; */
+/* gnutls_datum_t datum; */
+
+/* fp = fopen (fname, "rb"); */
+/* if (!fp) */
+/* { */
+/* err = gpg_error_from_syserror (); */
+/* log_fatal ("can't open '%s': %s\n", fname, gpg_strerror (err)); */
+/* } */
+
+/* if (fstat (fileno(fp), &st)) */
+/* { */
+/* err = gpg_error_from_syserror (); */
+/* log_fatal ("can't stat '%s': %s\n", fname, gpg_strerror (err)); */
+/* } */
+
+/* buflen = st.st_size; */
+/* buf = xmalloc (buflen+1); */
+/* if (fread (buf, buflen, 1, fp) != 1) */
+/* { */
+/* err = gpg_error_from_syserror (); */
+/* log_fatal ("error reading '%s': %s\n", fname, gpg_strerror (err)); */
+/* } */
+/* fclose (fp); */
+
+/* datum.size = buflen; */
+/* datum.data = buf; */
+
+/* rc = gnutls_dh_params_import_pkcs3 (dh_params, &datum, GNUTLS_X509_FMT_PEM); */
+/* if (rc < 0) */
+/* log_fatal ("gnutls_dh_param_import failed: %s\n", gnutls_strerror (rc)); */
+
+/* xfree (buf); */
+/* } */
+
+
+
+#if HTTP_USE_GNUTLS
+static gpg_error_t
+verify_callback (http_t hd, http_session_t session, int reserved)
+{
+ (void)hd;
+ (void)reserved;
+ return no_verify? 0 : http_verify_server_credentials (session);
+}
+#endif
+
+#if HTTP_USE_GNUTLS
+static void
+my_gnutls_log (int level, const char *text)
+{
+ fprintf (stderr, "gnutls:L%d: %s", level, text);
+}
+#endif
+
+#if HTTP_USE_NTBTLS
+static gpg_error_t
+my_http_tls_verify_cb (void *opaque,
+ http_t http,
+ http_session_t session,
+ unsigned int http_flags,
+ void *tls_context)
+{
+ gpg_error_t err;
+ int idx;
+ ksba_cert_t cert;
+ ksba_cert_t hostcert = NULL;
+
+ (void)opaque;
+ (void)http;
+ (void)session;
+ (void)http_flags;
+
+ /* Get the peer's certs fron ntbtls. */
+ for (idx = 0;
+ (cert = ntbtls_x509_get_peer_cert (tls_context, idx)); idx++)
+ {
+ if (!idx)
+ {
+ log_info ("Received host certificate\n");
+ hostcert = cert;
+ }
+ else
+ {
+
+ log_info ("Received additional certificate\n");
+ ksba_cert_release (cert);
+ }
+ }
+ if (!idx)
+ {
+ err = gpg_error (GPG_ERR_MISSING_CERT);
+ goto leave;
+ }
+
+ err = 0;
+
+ leave:
+ ksba_cert_release (hostcert);
+ log_info ("my_http_tls_verify_cb returns: %s\n", gpg_strerror (err));
+ return err;
+}
+#endif /*HTTP_USE_NTBTLS*/
+
+
+
+/* Prepend FNAME with the srcdir environment variable's value and
+ return an allocated filename. */
+static char *
+prepend_srcdir (const char *fname)
+{
+ static const char *srcdir;
+ char *result;
+
+ if (!srcdir && !(srcdir = getenv ("srcdir")))
+ srcdir = ".";
+
+ result = xmalloc (strlen (srcdir) + 1 + strlen (fname) + 1);
+ strcpy (result, srcdir);
+ strcat (result, "/");
+ strcat (result, fname);
+ return result;
+}
+
+
+int
+main (int argc, char **argv)
+{
+ int last_argc = -1;
+ gpg_error_t err;
+ int rc; parsed_uri_t uri;
+ uri_tuple_t r;
+ http_t hd;
+ int c;
+ unsigned int my_http_flags = 0;
+ int no_out = 0;
+ int tls_dbg = 0;
+ int no_crl = 0;
+ const char *cafile = NULL;
+ http_session_t session = NULL;
+ unsigned int timeout = 0;
+
+ gpgrt_init ();
+ log_set_prefix (PGM, GPGRT_LOG_WITH_PREFIX | GPGRT_LOG_WITH_PID);
+ if (argc)
+ { argc--; argv++; }
+ while (argc && last_argc != argc )
+ {
+ last_argc = argc;
+ if (!strcmp (*argv, "--"))
+ {
+ argc--; argv++;
+ break;
+ }
+ else if (!strcmp (*argv, "--help"))
+ {
+ fputs ("usage: " PGM " URL\n"
+ "Options:\n"
+ " --verbose print timings etc.\n"
+ " --debug flyswatter\n"
+ " --tls-debug N use TLS debug level N\n"
+ " --cacert FNAME expect CA certificate in file FNAME\n"
+ " --timeout MS timeout for connect in MS\n"
+ " --no-verify do not verify the certificate\n"
+ " --force-tls use HTTP_FLAG_FORCE_TLS\n"
+ " --force-tor use HTTP_FLAG_FORCE_TOR\n"
+ " --no-out do not print the content\n"
+ " --no-crl do not consuilt a CRL\n",
+ stdout);
+ exit (0);
+ }
+ else if (!strcmp (*argv, "--verbose"))
+ {
+ verbose++;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--debug"))
+ {
+ verbose += 2;
+ debug++;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--tls-debug"))
+ {
+ argc--; argv++;
+ if (argc)
+ {
+ tls_dbg = atoi (*argv);
+ argc--; argv++;
+ }
+ }
+ else if (!strcmp (*argv, "--cacert"))
+ {
+ argc--; argv++;
+ if (argc)
+ {
+ cafile = *argv;
+ argc--; argv++;
+ }
+ }
+ else if (!strcmp (*argv, "--timeout"))
+ {
+ argc--; argv++;
+ if (argc)
+ {
+ timeout = strtoul (*argv, NULL, 10);
+ argc--; argv++;
+ }
+ }
+ else if (!strcmp (*argv, "--no-verify"))
+ {
+ no_verify = 1;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--force-tls"))
+ {
+ my_http_flags |= HTTP_FLAG_FORCE_TLS;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--force-tor"))
+ {
+ my_http_flags |= HTTP_FLAG_FORCE_TOR;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--no-out"))
+ {
+ no_out = 1;
+ argc--; argv++;
+ }
+ else if (!strcmp (*argv, "--no-crl"))
+ {
+ no_crl = 1;
+ argc--; argv++;
+ }
+ else if (!strncmp (*argv, "--", 2))
+ {
+ fprintf (stderr, PGM ": unknown option '%s'\n", *argv);
+ exit (1);
+ }
+ }
+ if (argc != 1)
+ {
+ fprintf (stderr, PGM ": no or too many URLS given\n");
+ exit (1);
+ }
+
+ if (!cafile)
+ cafile = prepend_srcdir ("tls-ca.pem");
+
+ if (verbose)
+ my_http_flags |= HTTP_FLAG_LOG_RESP;
+
+ if (verbose || debug)
+ http_set_verbose (verbose, debug);
+
+ /* http.c makes use of the assuan socket wrapper. */
+ assuan_sock_init ();
+
+ if ((my_http_flags & HTTP_FLAG_FORCE_TOR))
+ {
+ enable_dns_tormode (1);
+ if (assuan_sock_set_flag (ASSUAN_INVALID_FD, "tor-mode", 1))
+ {
+ log_error ("error enabling Tor mode: %s\n", strerror (errno));
+ log_info ("(is your Libassuan recent enough?)\n");
+ }
+ }
+
+#if HTTP_USE_NTBTLS
+ log_info ("new session.\n");
+ err = http_session_new (&session, NULL,
+ ((no_crl? HTTP_FLAG_NO_CRL : 0)
+ | HTTP_FLAG_TRUST_DEF),
+ my_http_tls_verify_cb, NULL);
+ if (err)
+ log_error ("http_session_new failed: %s\n", gpg_strerror (err));
+ ntbtls_set_debug (tls_dbg, NULL, NULL);
+
+#elif HTTP_USE_GNUTLS
+
+ rc = gnutls_global_init ();
+ if (rc)
+ log_error ("gnutls_global_init failed: %s\n", gnutls_strerror (rc));
+
+ http_register_tls_callback (verify_callback);
+ http_register_tls_ca (cafile);
+
+ err = http_session_new (&session, NULL,
+ ((no_crl? HTTP_FLAG_NO_CRL : 0)
+ | HTTP_FLAG_TRUST_DEF),
+ NULL, NULL);
+ if (err)
+ log_error ("http_session_new failed: %s\n", gpg_strerror (err));
+
+ /* rc = gnutls_dh_params_init(&dh_params); */
+ /* if (rc) */
+ /* log_error ("gnutls_dh_params_init failed: %s\n", gnutls_strerror (rc)); */
+ /* read_dh_params ("dh_param.pem"); */
+
+ /* rc = gnutls_certificate_set_x509_trust_file */
+ /* (certcred, "ca.pem", GNUTLS_X509_FMT_PEM); */
+ /* if (rc) */
+ /* log_error ("gnutls_certificate_set_x509_trust_file failed: %s\n", */
+ /* gnutls_strerror (rc)); */
+
+ /* gnutls_certificate_set_dh_params (certcred, dh_params); */
+
+ gnutls_global_set_log_function (my_gnutls_log);
+ if (tls_dbg)
+ gnutls_global_set_log_level (tls_dbg);
+
+#else
+ (void)err;
+ (void)tls_dbg;
+ (void)no_crl;
+#endif /*HTTP_USE_GNUTLS*/
+
+ rc = http_parse_uri (&uri, *argv, HTTP_PARSE_NO_SCHEME_CHECK);
+ if (rc)
+ {
+ log_error ("'%s': %s\n", *argv, gpg_strerror (rc));
+ return 1;
+ }
+
+ printf ("Scheme: %s\n", uri->scheme);
+ if (uri->opaque)
+ printf ("Value : %s\n", uri->path);
+ else
+ {
+ printf ("Auth : %s\n", uri->auth? uri->auth:"[none]");
+ printf ("Host : %s (off=%hu)\n", uri->host, uri->off_host);
+ printf ("Port : %u\n", uri->port);
+ printf ("Path : %s (off=%hu)\n", uri->path, uri->off_path);
+ for (r = uri->params; r; r = r->next)
+ {
+ printf ("Params: %s", r->name);
+ if (!r->no_value)
+ {
+ printf ("=%s", r->value);
+ if (strlen (r->value) != r->valuelen)
+ printf (" [real length=%d]", (int) r->valuelen);
+ }
+ putchar ('\n');
+ }
+ for (r = uri->query; r; r = r->next)
+ {
+ printf ("Query : %s", r->name);
+ if (!r->no_value)
+ {
+ printf ("=%s", r->value);
+ if (strlen (r->value) != r->valuelen)
+ printf (" [real length=%d]", (int) r->valuelen);
+ }
+ putchar ('\n');
+ }
+ printf ("Flags :%s%s%s%s\n",
+ uri->is_http? " http":"",
+ uri->opaque? " opaque":"",
+ uri->v6lit? " v6lit":"",
+ uri->onion? " onion":"");
+ printf ("TLS : %s\n",
+ uri->use_tls? "yes":
+ (my_http_flags&HTTP_FLAG_FORCE_TLS)? "forced" : "no");
+ printf ("Tor : %s\n",
+ (my_http_flags&HTTP_FLAG_FORCE_TOR)? "yes" : "no");
+
+ }
+ fflush (stdout);
+ http_release_parsed_uri (uri);
+ uri = NULL;
+
+ if (session)
+ http_session_set_timeout (session, timeout);
+
+ rc = http_open_document (&hd, *argv, NULL, my_http_flags,
+ NULL, session, NULL, NULL);
+ if (rc)
+ {
+ log_error ("can't get '%s': %s\n", *argv, gpg_strerror (rc));
+ return 1;
+ }
+ log_info ("open_http_document succeeded; status=%u\n",
+ http_get_status_code (hd));
+
+ {
+ const char **names;
+ int i;
+
+ names = http_get_header_names (hd);
+ if (!names)
+ log_fatal ("http_get_header_names failed: %s\n",
+ gpg_strerror (gpg_error_from_syserror ()));
+ for (i = 0; names[i]; i++)
+ printf ("HDR: %s: %s\n", names[i], http_get_header (hd, names[i]));
+ xfree (names);
+ }
+ fflush (stdout);
+
+ switch (http_get_status_code (hd))
+ {
+ case 200:
+ case 400:
+ case 401:
+ case 403:
+ case 404:
+ {
+ unsigned long count = 0;
+ while ((c = es_getc (http_get_read_ptr (hd))) != EOF)
+ {
+ count++;
+ if (!no_out)
+ putchar (c);
+ }
+ log_info ("Received bytes: %lu\n", count);
+ }
+ break;
+ case 301:
+ case 302:
+ case 307:
+ log_info ("Redirected to: %s\n", http_get_header (hd, "Location"));
+ break;
+ }
+ http_close (hd, 0);
+
+ http_session_release (session);
+#ifdef HTTP_USE_GNUTLS
+ gnutls_global_deinit ();
+#endif /*HTTP_USE_GNUTLS*/
+
+ return 0;
+}
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