From 8e61d2807317ed66163a395c1cd8666fd442d9aa Mon Sep 17 00:00:00 2001
From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Tue, 4 May 2021 16:08:18 +0100
Subject: [PATCH] Debug: output dmarc library version

---
 src/src/dmarc.c | 25 +++++++++++++++++++------
 src/src/dmarc.h |  1 +
 src/src/exim.c  |  3 +++
 3 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/src/src/dmarc.c b/src/src/dmarc.c
index 5328f4f7d..599ecc454 100644
--- a/src/src/dmarc.c
+++ b/src/src/dmarc.c
@@ -51,21 +51,34 @@ static dmarc_exim_p dmarc_policy_description[] = {
   { US"reject",     DMARC_RECORD_P_REJECT },
   { NULL,           0 }
 };
+
+
+void 
+dmarc_version_report(FILE *f)
+{ 
+const char *implementation, *version;
+
+fprintf(f, "Library version: dmarc: Compile: %d.%d.%d.%d\n",
+  (OPENDMARC_LIB_VERSION & 0xff000000) >> 24, (OPENDMARC_LIB_VERSION & 0x00ff0000) >> 16,
+  (OPENDMARC_LIB_VERSION & 0x0000ff00) >> 8, OPENDMARC_LIB_VERSION & 0x000000ff);
+}
+
+
 /* Accept an error_block struct, initialize if empty, parse to the
- * end, and append the two strings passed to it.  Used for adding
- * variable amounts of value:pair data to the forensic emails. */
+end, and append the two strings passed to it.  Used for adding
+variable amounts of value:pair data to the forensic emails. */
 
 static error_block *
 add_to_eblock(error_block *eblock, uschar *t1, uschar *t2)
 {
 error_block *eb = store_malloc(sizeof(error_block));
-if (eblock == NULL)
+if (!eblock)
   eblock = eb;
 else
   {
   /* Find the end of the eblock struct and point it at eb */
   error_block *tmp = eblock;
-  while(tmp->next != NULL)
+  while(tmp->next)
     tmp = tmp->next;
   tmp->next = eb;
   }
@@ -76,8 +89,8 @@ return eblock;
 }
 
 /* dmarc_init sets up a context that can be re-used for several
-   messages on the same SMTP connection (that come from the
-   same host with the same HELO string) */
+messages on the same SMTP connection (that come from the
+same host with the same HELO string) */
 
 int
 dmarc_init()
diff --git a/src/src/dmarc.h b/src/src/dmarc.h
index ef967e0b7..f3c29b00a 100644
--- a/src/src/dmarc.h
+++ b/src/src/dmarc.h
@@ -17,6 +17,7 @@
 # endif /* SUPPORT_SPF */
 
 /* prototypes */
+void dmarc_version_report(FILE *);
 int dmarc_init();
 int dmarc_store_data(header_line *);
 int dmarc_process();
diff --git a/src/src/exim.c b/src/src/exim.c
index a3983f88d..3e08f0376 100644
--- a/src/src/exim.c
+++ b/src/src/exim.c
@@ -1138,6 +1138,9 @@ show_db_version(fp);
 #ifdef SUPPORT_I18N
   utf8_version_report(fp);
 #endif
+#ifdef SUPPORT_DMARC
+  dmarc_version_report(fp);
+#endif
 #ifdef SUPPORT_SPF
   spf_lib_version_report(fp);
 #endif
-- 
2.30.2