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https://github.com/moparisthebest/wget
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[svn] Use the CONNECT method to establish passthrough over SSL traffic
over proxies.
This commit is contained in:
hniksic
parent
7c063c3175
commit
76b59b1ad7
@ -1,3 +1,8 @@
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2003-11-28 Hrvoje Niksic <hniksic@xemacs.org>
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* http.c (gethttp): Use the CONNECT handle to establish SSL
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passthrough through non-SSL proxies.
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2003-11-28 Hrvoje Niksic <hniksic@xemacs.org>
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* init.c: Don't #include netinet/Winsock stuff.
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167
src/http.c
167
src/http.c
@ -804,7 +804,7 @@ gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy)
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authenticate_h = NULL;
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auth_tried_already = 0;
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inhibit_keep_alive = !opt.http_keep_alive || proxy != NULL;
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inhibit_keep_alive = !opt.http_keep_alive;
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again:
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/* We need to come back here when the initial attempt to retrieve
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@ -825,21 +825,72 @@ gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy)
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hs->remote_time = NULL;
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hs->error = NULL;
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conn = u;
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proxyauth = NULL;
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if (proxy)
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{
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char *proxy_user, *proxy_passwd;
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/* For normal username and password, URL components override
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command-line/wgetrc parameters. With proxy
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authentication, it's the reverse, because proxy URLs are
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normally the "permanent" ones, so command-line args
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should take precedence. */
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if (opt.proxy_user && opt.proxy_passwd)
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{
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proxy_user = opt.proxy_user;
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proxy_passwd = opt.proxy_passwd;
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}
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else
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{
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proxy_user = proxy->user;
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proxy_passwd = proxy->passwd;
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}
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/* #### This does not appear right. Can't the proxy request,
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say, `Digest' authentication? */
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if (proxy_user && proxy_passwd)
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proxyauth = basic_authentication_encode (proxy_user, proxy_passwd,
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"Proxy-Authorization");
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/* If we're using a proxy, we will be connecting to the proxy
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server. */
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conn = proxy ? proxy : u;
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conn = proxy;
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}
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host_lookup_failed = 0;
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sock = -1;
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/* First: establish the connection. */
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if (inhibit_keep_alive
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|| !persistent_available_p (conn->host, conn->port,
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if (!inhibit_keep_alive)
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{
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/* Look for a persistent connection to target host, unless a
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proxy is used. The exception is when SSL is in use, in which
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case the proxy is nothing but a passthrough to the target
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host, registered as a connection to the latter. */
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struct url *relevant = conn;
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#ifdef HAVE_SSL
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u->scheme == SCHEME_HTTPS
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#else
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0
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if (u->scheme == SCHEME_HTTPS)
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relevant = u;
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#endif
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, &host_lookup_failed))
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if (persistent_available_p (relevant->host, relevant->port,
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#ifdef HAVE_SSL
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relevant->scheme == SCHEME_HTTPS,
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#else
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0,
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#endif
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&host_lookup_failed))
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{
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sock = pconn.socket;
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using_ssl = pconn.ssl;
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logprintf (LOG_VERBOSE, _("Reusing existing connection to %s:%d.\n"),
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pconn.host, pconn.port);
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DEBUGP (("Reusing fd %d.\n", sock));
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}
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}
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if (sock < 0)
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{
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/* In its current implementation, persistent_available_p will
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look up conn->host in some cases. If that lookup failed, we
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@ -855,13 +906,68 @@ gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy)
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? CONERROR : CONIMPOSSIBLE);
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#ifdef HAVE_SSL
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if (proxy && u->scheme == SCHEME_HTTPS)
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{
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/* When requesting SSL URLs through proxies, use the
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CONNECT method to request passthrough. */
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char *connect =
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(char *) alloca (64
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+ strlen (u->host)
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+ (proxyauth ? strlen (proxyauth) : 0));
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sprintf (connect, "CONNECT %s:%d HTTP/1.0\r\n%s\r\n",
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u->host, u->port, proxyauth ? proxyauth : "");
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DEBUGP (("Writing to proxy: [%s]\n", connect));
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write_error = fd_write (sock, connect, strlen (connect), -1);
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if (write_error < 0)
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{
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xfree_null (proxyauth);
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logprintf (LOG_VERBOSE, _("Failed writing to proxy: %s.\n"),
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strerror (errno));
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CLOSE_INVALIDATE (sock);
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return WRITEFAILED;
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}
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head = fd_read_http_head (sock);
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if (!head)
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{
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xfree_null (proxyauth);
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logprintf (LOG_VERBOSE, _("Failed reading proxy response: %s\n"),
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strerror (errno));
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CLOSE_INVALIDATE (sock);
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return HERR;
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}
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message = NULL;
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if (!*head)
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{
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xfree (head);
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goto failed_tunnel;
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}
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DEBUGP (("proxy responded with: [%s]\n", head));
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resp = response_new (head);
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statcode = response_status (resp, &message);
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response_free (resp);
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if (statcode != 200)
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{
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failed_tunnel:
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xfree_null (proxyauth);
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logprintf (LOG_NOTQUIET, _("Proxy tunneling failed: %s"),
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message ? message : "?");
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xfree_null (message);
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return CONSSLERR;
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}
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xfree (message);
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/* SOCK is now *really* connected to u->host, so update CONN
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to reflect this. That way register_persistent will
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register SOCK as being connected to u->host:u->port. */
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conn = u;
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}
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if (conn->scheme == SCHEME_HTTPS)
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{
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if (!ssl_connect (sock))
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{
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logputs (LOG_VERBOSE, "\n");
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logprintf (LOG_NOTQUIET,
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_("Unable to establish SSL connection.\n"));
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fd_close (sock);
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return CONSSLERR;
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}
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@ -869,14 +975,6 @@ gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy)
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}
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#endif /* HAVE_SSL */
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}
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else
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{
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logprintf (LOG_VERBOSE, _("Reusing existing connection to %s:%d.\n"),
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pconn.host, pconn.port);
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sock = pconn.socket;
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using_ssl = pconn.ssl;
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DEBUGP (("Reusing fd %d.\n", sock));
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}
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if (*dt & HEAD_ONLY)
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command = "HEAD";
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@ -964,32 +1062,6 @@ gethttp (struct url *u, struct http_stat *hs, int *dt, struct url *proxy)
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}
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}
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proxyauth = NULL;
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if (proxy)
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{
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char *proxy_user, *proxy_passwd;
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/* For normal username and password, URL components override
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command-line/wgetrc parameters. With proxy authentication,
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it's the reverse, because proxy URLs are normally the
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"permanent" ones, so command-line args should take
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precedence. */
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if (opt.proxy_user && opt.proxy_passwd)
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{
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proxy_user = opt.proxy_user;
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proxy_passwd = opt.proxy_passwd;
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}
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else
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{
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proxy_user = proxy->user;
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proxy_passwd = proxy->passwd;
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}
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/* #### This does not appear right. Can't the proxy request,
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say, `Digest' authentication? */
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if (proxy_user && proxy_passwd)
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proxyauth = basic_authentication_encode (proxy_user, proxy_passwd,
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"Proxy-Authorization");
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}
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/* String of the form :PORT. Used only for non-standard ports. */
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port_maybe = NULL;
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if (u->port != scheme_default_port (u->scheme))
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@ -1141,10 +1213,7 @@ Accept: %s\r\n\
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return HERR;
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}
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}
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DEBUGP (("\n---response begin---\n"));
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DEBUGP (("%s", head));
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DEBUGP (("---response end---\n"));
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DEBUGP (("\n---response begin---\n%s---response end---\n", head));
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resp = response_new (head);
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