extern int errno;
#endif
+/* Application-wide SSL context. This is common to all SSL
+ connections. */
SSL_CTX *ssl_ctx;
+/* Initialize the SSL's PRNG using various methods. */
+
static void
-ssl_init_prng (void)
+init_prng (void)
{
- /* It is likely that older versions of OpenSSL will fail on
- non-Linux machines because this code is unable to seed the PRNG
- on older versions of the library. */
+ char namebuf[256];
+ const char *random_file;
+
+ if (RAND_status ())
+ /* The PRNG has been seeded; no further action is necessary. */
+ return;
-#if SSLEAY_VERSION_NUMBER >= 0x00905100
- char rand_file[256];
+ /* Seed from a file specified by the user. This will be the file
+ specified with --random-file, $RANDFILE, if set, or ~/.rnd, if it
+ exists. */
+ if (opt.random_file)
+ random_file = opt.random_file;
+ else
+ {
+ /* Get the random file name using RAND_file_name. */
+ namebuf[0] = '\0';
+ random_file = RAND_file_name (namebuf, sizeof (namebuf));
+ }
- /* First, seed from a file specified by the user. This will be
- $RANDFILE, if set, or ~/.rnd. */
- RAND_file_name (rand_file, sizeof (rand_file));
- if (rand_file)
- /* Seed at most 16k (value borrowed from curl) from random file. */
- RAND_load_file (rand_file, 16384);
+ if (random_file && *random_file)
+ /* Seed at most 16k (apparently arbitrary value borrowed from
+ curl) from random file. */
+ RAND_load_file (random_file, 16384);
if (RAND_status ())
return;
- /* Get random data from EGD if opt.egd_file was set. */
+ /* Get random data from EGD if opt.egd_file was used. */
if (opt.egd_file && *opt.egd_file)
RAND_egd (opt.egd_file);
PRNG. This is cryptographically weak and defeats the purpose
of using OpenSSL, which is why it is highly discouraged. */
- logprintf (LOG_VERBOSE, _("WARNING: using a weak random seed.\n"));
+ logprintf (LOG_NOTQUIET, _("WARNING: using a weak random seed.\n"));
while (RAND_status () == 0 && maxrand-- > 0)
{
}
}
#endif
-
-#endif /* SSLEAY_VERSION_NUMBER >= 0x00905100 */
}
+/* #### Someone should audit and document this. */
+
static int
verify_callback (int ok, X509_STORE_CTX *ctx)
{
- char *s, buf[256];
- s = X509_NAME_oneline (X509_get_subject_name (ctx->current_cert),
- buf, sizeof (buf));
+ char buf[256];
+ /* #### Why are we not using the result of this call? */
+ X509_NAME_oneline (X509_get_subject_name (ctx->current_cert),
+ buf, sizeof (buf));
if (ok == 0)
{
switch (ctx->error)
return ok;
}
-/* Print SSL errors. */
+/* Print errors in the OpenSSL error stack. */
static void
-ssl_print_errors (void)
+print_errors (void)
{
unsigned long curerr = 0;
while ((curerr = ERR_get_error ()) != 0)
}
}
-/* Creates a SSL Context and sets some defaults for it */
-uerr_t
+/* Create an SSL Context and set default paths etc. Called the first
+ time an HTTP download is attempted.
+
+ Returns 0 on success, non-zero otherwise. */
+
+int
ssl_init ()
{
- SSL_METHOD *meth = NULL;
+ SSL_METHOD *meth;
if (ssl_ctx)
- return 0;
+ /* The SSL has already been initialized. */
+ return 1;
/* Init the PRNG. If that fails, bail out. */
- ssl_init_prng ();
- if (RAND_status () == 0)
+ init_prng ();
+ if (RAND_status () != 1)
{
logprintf (LOG_NOTQUIET,
- _("Could not seed OpenSSL PRNG; disabling SSL.\n"));
- scheme_disable (SCHEME_HTTPS);
- return SSLERRCTXCREATE;
+ _("Could not seed PRNG; consider using --random-file.\n"));
+ goto error;
}
SSL_library_init ();
SSL_load_error_strings ();
SSLeay_add_all_algorithms ();
SSLeay_add_ssl_algorithms ();
+
switch (opt.secure_protocol)
{
case secure_protocol_auto:
}
ssl_ctx = SSL_CTX_new (meth);
+ if (!ssl_ctx)
+ goto error;
+
SSL_CTX_set_default_verify_paths (ssl_ctx);
SSL_CTX_load_verify_locations (ssl_ctx, opt.ca_cert, opt.ca_directory);
SSL_CTX_set_verify (ssl_ctx,
if (SSL_CTX_use_certificate_file (ssl_ctx, opt.cert_file,
key_type_to_ssl_type (opt.cert_type))
!= 1)
- {
- ssl_print_errors ();
- return SSLERRCERTFILE;
- }
+ goto error;
if (opt.private_key)
if (SSL_CTX_use_PrivateKey_file (ssl_ctx, opt.private_key,
key_type_to_ssl_type (opt.private_key_type))
!= 1)
- {
- ssl_print_errors ();
- return SSLERRCERTKEY;
- }
+ goto error;
+
+ return 1;
- return 0; /* Succeded */
+ error:
+ if (ssl_ctx)
+ SSL_CTX_free (ssl_ctx);
+ print_errors ();
+ return 0;
}
static int
-ssl_read (int fd, char *buf, int bufsize, void *ctx)
+openssl_read (int fd, char *buf, int bufsize, void *ctx)
{
int ret;
SSL *ssl = (SSL *) ctx;
}
static int
-ssl_write (int fd, char *buf, int bufsize, void *ctx)
+openssl_write (int fd, char *buf, int bufsize, void *ctx)
{
int ret = 0;
SSL *ssl = (SSL *) ctx;
}
static int
-ssl_poll (int fd, double timeout, int wait_for, void *ctx)
+openssl_poll (int fd, double timeout, int wait_for, void *ctx)
{
SSL *ssl = (SSL *) ctx;
if (timeout == 0)
}
static int
-ssl_peek (int fd, char *buf, int bufsize, void *ctx)
+openssl_peek (int fd, char *buf, int bufsize, void *ctx)
{
int ret;
SSL *ssl = (SSL *) ctx;
}
static void
-ssl_close (int fd, void *ctx)
+openssl_close (int fd, void *ctx)
{
SSL *ssl = (SSL *) ctx;
SSL_shutdown (ssl);
/* Register FD with Wget's transport layer, i.e. arrange that
SSL-enabled functions are used for reading, writing, and polling.
- That way the rest of Wget can keep using xread, xwrite, and
+ That way the rest of Wget can keep using fd_read, fd_write, and
friends and not care what happens underneath. */
- fd_register_transport (fd, ssl_read, ssl_write, ssl_poll, ssl_peek,
- ssl_close, ssl);
+ fd_register_transport (fd, openssl_read, openssl_write, openssl_poll,
+ openssl_peek, openssl_close, ssl);
DEBUGP (("Connected %d to SSL 0x%0*lx\n", fd, 2 * sizeof (void *),
(unsigned long) ssl));
return 1;
err:
- ssl_print_errors ();
+ print_errors ();
if (ssl)
SSL_free (ssl);
return 0;
projects / wget / blobdiff