Build: avoid compiling code for unused transports, routers, authenticators

[exim.git] / src / src / auths / cram_md5.c

diff --git a/src/src/auths/cram_md5.c b/src/src/auths/cram_md5.c
index 280b5293a2e77d64a8215b13f18011ec88b04977..8f00ee498e00f435fd26a1c436d1cf029bcc46ab 100644 (file)
--- a/src/src/auths/cram_md5.c
+++ b/src/src/auths/cram_md5.c
@@ -2,8 +2,8 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
+/* Copyright (c) The Exim Maintainers 2020 - 2023 */
 /* Copyright (c) University of Cambridge 1995 - 2018 */
-/* Copyright (c) The Exim Maintainers 2020 */
 /* See the file NOTICE for conditions of use and distribution. */
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 
@@ -13,15 +13,17 @@ in the MD5 computation functions, without their own stand-alone main
 program. */
 
 #ifdef STAND_ALONE
-#define CRAM_STAND_ALONE
-#include "md5.c"
+# define CRAM_STAND_ALONE
+# include "md5.c"
 
 
 /* This is the normal, non-stand-alone case */
 
 #else
-#include "../exim.h"
-#include "cram_md5.h"
+# include "../exim.h"
+
+# ifdef AUTH_CRAM_MD5
+#  include "cram_md5.h"
 
 /* Options specific to the cram_md5 authentication mechanism. */
 
@@ -49,7 +51,7 @@ auth_cram_md5_options_block auth_cram_md5_option_defaults = {
 };
 
 
-#ifdef MACRO_PREDEF
+#  ifdef MACRO_PREDEF
 
 /* Dummy values */
 void auth_cram_md5_init(auth_instance *ablock) {}
@@ -57,7 +59,7 @@ int auth_cram_md5_server(auth_instance *ablock, uschar *data) {return 0;}
 int auth_cram_md5_client(auth_instance *ablock, void *sx, int timeout,
     uschar *buffer, int buffsize) {return 0;}
 
-#else  /*!MACRO_PREDEF*/
+#  else        /*!MACRO_PREDEF*/
 
 
 /*************************************************
@@ -81,8 +83,9 @@ if (ob->client_secret != NULL)
   }
 }
 
-#endif /*!MACRO_PREDEF*/
-#endif  /* STAND_ALONE */
+#  endif       /*!MACRO_PREDEF*/
+# endif                /*AUTH_CRAM_MD5*/
+#endif         /*!STAND_ALONE*/
 
 
 
@@ -154,7 +157,8 @@ md5_end(&base, md5secret, 16, digestptr);
 }
 
 
-#ifndef STAND_ALONE
+# ifndef STAND_ALONE
+#  ifdef AUTH_CRAM_MD5
 
 /*************************************************
 *             Server entry point                 *
@@ -163,13 +167,13 @@ md5_end(&base, md5secret, 16, digestptr);
 /* For interface, see auths/README */
 
 int
-auth_cram_md5_server(auth_instance *ablock, uschar *data)
+auth_cram_md5_server(auth_instance * ablock, uschar * data)
 {
-auth_cram_md5_options_block *ob =
+auth_cram_md5_options_block * ob =
   (auth_cram_md5_options_block *)(ablock->options_block);
-uschar *challenge = string_sprintf("<%d.%ld@%s>", getpid(),
+uschar * challenge = string_sprintf("<%d.%ld@%s>", getpid(),
     (long int) time(NULL), primary_hostname);
-uschar *clear, *secret;
+uschar * clear, * secret;
 uschar digest[16];
 int i, rc, len;
 
@@ -186,7 +190,7 @@ if (*data) return UNEXPECTED;
 /* Send the challenge, read the return */
 
 if ((rc = auth_get_data(&data, challenge, Ustrlen(challenge))) != OK) return rc;
-if ((len = b64decode(data, &clear)) < 0) return BAD64;
+if ((len = b64decode(data, &clear, GET_TAINTED)) < 0) return BAD64;
 
 /* The return consists of a user name, space-separated from the CRAM-MD5
 digest, expressed in hex. Extract the user name and put it in $auth1 and $1.
@@ -298,7 +302,7 @@ if (smtp_write_command(sx, SCMD_FLUSH, "AUTH %s\r\n", ablock->public_name) < 0)
 if (!smtp_read_response(sx, buffer, buffsize, '3', timeout))
   return FAIL;
 
-if (b64decode(buffer + 4, &challenge) < 0)
+if (b64decode(buffer + 4, &challenge, buffer + 4) < 0)
   {
   string_format(buffer, buffsize, "bad base 64 string in challenge: %s",
     big_buffer + 4);
@@ -329,7 +333,8 @@ if (smtp_write_command(sx, SCMD_FLUSH, "%s\r\n", b64encode(CUS big_buffer,
 return smtp_read_response(sx, US buffer, buffsize, '2', timeout)
   ? OK : FAIL;
 }
-#endif  /* STAND_ALONE */
+#  endif  /*AUTH_CRAM_MD5*/
+# endif  /*!STAND_ALONE*/
 
 
 /*************************************************
@@ -338,7 +343,7 @@ return smtp_read_response(sx, US buffer, buffsize, '2', timeout)
 **************************************************
 *************************************************/
 
-#ifdef STAND_ALONE
+# ifdef STAND_ALONE
 
 int main(int argc, char **argv)
 {
@@ -355,7 +360,7 @@ printf("\n");
 return 0;
 }
 
-#endif
+# endif        /*STAND_ALONE*/
 
 #endif /*!MACRO_PREDEF*/
 /* End of cram_md5.c */