http_negotiate: Combine GSS-API and SSPI source files

As the GSS-API and SSPI based source files are no longer library/API
specific, following the extraction of that authentication code to the
vauth directory, combine these files rather than maintain two separate
versions.

4 files changed, 33 insertions, 145 deletions

diff --git a/lib/Makefile.inc b/lib/Makefile.inc
index b9bb7149f..ce15cff05 100644
--- a/lib/Makefile.inc
+++ b/lib/Makefile.inc
@@ -50,10 +50,10 @@ LIB_CFILES = file.c timeval.c base64.c hostip.c progress.c formdata.c   \
   curl_sspi.c slist.c nonblock.c curl_memrchr.c imap.c pop3.c smtp.c    \
   pingpong.c rtsp.c curl_threads.c warnless.c hmac.c curl_rtmp.c        \
   openldap.c curl_gethostname.c gopher.c idn_win32.c                    \
-  http_negotiate_sspi.c http_proxy.c non-ascii.c asyn-ares.c            \
-  asyn-thread.c curl_gssapi.c curl_ntlm.c curl_ntlm_wb.c                \
-  curl_ntlm_core.c curl_sasl.c curl_multibyte.c hostcheck.c conncache.c \
-  pipeline.c dotdot.c x509asn1.c http2.c smb.c curl_endian.c curl_des.c
+  http_proxy.c non-ascii.c asyn-ares.c asyn-thread.c curl_gssapi.c      \
+  curl_ntlm.c curl_ntlm_wb.c curl_ntlm_core.c curl_sasl.c               \
+  curl_multibyte.c hostcheck.c conncache.c pipeline.c dotdot.c          \
+  x509asn1.c http2.c smb.c curl_endian.c curl_des.c
 
 LIB_HFILES = arpa_telnet.h netrc.h file.h timeval.h hostip.h progress.h \
   formdata.h cookie.h http.h sendf.h ftp.h url.h dict.h if2ip.h         \
diff --git a/lib/Makefile.vc6 b/lib/Makefile.vc6
index b87350a7f..64b58392b 100644
--- a/lib/Makefile.vc6
+++ b/lib/Makefile.vc6
@@ -574,7 +574,6 @@ X_OBJS= \
 	$(DIROBJ)\http_chunks.obj \

 	$(DIROBJ)\http_digest.obj \

 	$(DIROBJ)\http_negotiate.obj \

-	$(DIROBJ)\http_negotiate_sspi.obj \

 	$(DIROBJ)\http_proxy.obj \

 	$(DIROBJ)\idn_win32.obj \

 	$(DIROBJ)\if2ip.obj \

diff --git a/lib/http_negotiate.c b/lib/http_negotiate.c
index 587ea2a1c..99a4dbdad 100644
--- a/lib/http_negotiate.c
+++ b/lib/http_negotiate.c
@@ -22,7 +22,7 @@
 
 #include "curl_setup.h"
 
-#if defined(HAVE_GSSAPI) && !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
+#if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
 
 #include "urldata.h"
 #include "sendf.h"
@@ -39,8 +39,11 @@ CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
                               const char *header)
 {
   struct SessionHandle *data = conn->data;
+  size_t len;
 
-  /* Point to the service and host */
+  /* Point to the username, password, service and host */
+  const char *userp;
+  const char *passwdp;
   const char *service;
   const char *host;
 
@@ -48,29 +51,50 @@ CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
   struct negotiatedata *neg_ctx;
 
   if(proxy) {
+    userp = conn->proxyuser;
+    passwdp = conn->proxypasswd;
     service = data->set.str[STRING_PROXY_SERVICE_NAME];
     host = conn->host.name;
     neg_ctx = &data->state.proxyneg;
   }
   else {
+    userp = conn->user;
+    passwdp = conn->passwd;
     service = data->set.str[STRING_SERVICE_NAME];
     host = conn->proxy.name;
     neg_ctx = &data->state.negotiate;
   }
 
+  /* Not set means empty */
+  if(!userp)
+    userp = "";
+
+  if(!passwdp)
+    passwdp = "";
+
   /* Obtain the input token, if any */
   header += strlen("Negotiate");
   while(*header && ISSPACE(*header))
     header++;
 
+  len = strlen(header);
+  if(!len) {
+    /* Is this the first call in a new negotiation? */
+    if(neg_ctx->context) {
+      /* The server rejected our authentication and hasn't suppled any more
+      negotiation mechanisms */
+      return CURLE_LOGIN_DENIED;
+    }
+  }
+
   /* Initilise the security context and decode our challenge */
-  return Curl_auth_decode_spnego_message(data, NULL, NULL, service, host,
+  return Curl_auth_decode_spnego_message(data, userp, passwdp, service, host,
                                          header, neg_ctx);
 }
 
 CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
 {
-  struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
+  struct negotiatedata *neg_ctx = proxy ? &conn->data->state.proxyneg :
     &conn->data->state.negotiate;
   char *base64 = NULL;
   size_t len = 0;
@@ -104,4 +128,4 @@ void Curl_cleanup_negotiate(struct SessionHandle *data)
   Curl_auth_spnego_cleanup(&data->state.proxyneg);
 }
 
-#endif /* HAVE_GSSAPI && !CURL_DISABLE_HTTP && USE_SPNEGO */
+#endif /* !CURL_DISABLE_HTTP && USE_SPNEGO */
diff --git a/lib/http_negotiate_sspi.c b/lib/http_negotiate_sspi.c
deleted file mode 100644
index c79b55102..000000000
--- a/lib/http_negotiate_sspi.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at https://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#ifdef USE_WINDOWS_SSPI
-
-#if !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
-
-#include "urldata.h"
-#include "sendf.h"
-#include "rawstr.h"
-#include "vauth/vauth.h"
-#include "http_negotiate.h"
-#include "curl_printf.h"
-
-/* The last #include files should be: */
-#include "curl_memory.h"
-#include "memdebug.h"
-
-CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
-                              const char *header)
-{
-  struct SessionHandle *data = conn->data;
-  size_t len;
-
-  /* Point to the username, password, service and host */
-  const char *userp;
-  const char *passwdp;
-  const char *service;
-  const char *host;
-
-  /* Point to the correct struct with this */
-  struct negotiatedata *neg_ctx;
-
-  if(proxy) {
-    userp = conn->proxyuser;
-    passwdp = conn->proxypasswd;
-    service = data->set.str[STRING_PROXY_SERVICE_NAME];
-    host = conn->host.name;
-    neg_ctx = &data->state.proxyneg;
-  }
-  else {
-    userp = conn->user;
-    passwdp = conn->passwd;
-    service = data->set.str[STRING_SERVICE_NAME];
-    host = conn->proxy.name;
-    neg_ctx = &data->state.negotiate;
-  }
-
-  /* Not set means empty */
-  if(!userp)
-    userp = "";
-
-  if(!passwdp)
-    passwdp = "";
-
-  /* Obtain the input token, if any */
-  header += strlen("Negotiate");
-  while(*header && ISSPACE(*header))
-    header++;
-
-  len = strlen(header);
-  if(!len) {
-    /* Is this the first call in a new negotiation? */
-    if(neg_ctx->context) {
-      /* The server rejected our authentication and hasn't suppled any more
-         negotiation mechanisms */
-      return CURLE_LOGIN_DENIED;
-    }
-  }
-
-  /* Initilise the security context and decode our challenge */
-  return Curl_auth_decode_spnego_message(data, userp, passwdp, service, host,
-                                         header, neg_ctx);
-}
-
-CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
-{
-  struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
-    &conn->data->state.negotiate;
-  char *base64 = NULL;
-  size_t len = 0;
-  char *userp;
-  CURLcode result;
-
-  result = Curl_auth_create_spnego_message(conn->data, neg_ctx, &base64, &len);
-  if(result)
-    return result;
-
-  userp = aprintf("%sAuthorization: Negotiate %s\r\n", proxy ? "Proxy-" : "",
-                  base64);
-
-  if(proxy) {
-    Curl_safefree(conn->allocptr.proxyuserpwd);
-    conn->allocptr.proxyuserpwd = userp;
-  }
-  else {
-    Curl_safefree(conn->allocptr.userpwd);
-    conn->allocptr.userpwd = userp;
-  }
-
-  free(base64);
-
-  return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
-}
-
-void Curl_cleanup_negotiate(struct SessionHandle *data)
-{
-  Curl_auth_spnego_cleanup(&data->state.negotiate);
-  Curl_auth_spnego_cleanup(&data->state.proxyneg);
-}
-
-#endif /* !CURL_DISABLE_HTTP && USE_SPNEGO */
-
-#endif /* USE_WINDOWS_SSPI */