From 89b7b67a13ebb7965cc7f13ad0595e2194a2d34c Mon Sep 17 00:00:00 2001
From: Jannis Hoffmann <jannis@fehcom.de>
Date: Wed, 3 Jul 2024 15:48:04 +0200
Subject: add sqmail-4.2.29a

---
 src/spfquery.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 98 insertions(+)
 create mode 100644 src/spfquery.c

(limited to 'src/spfquery.c')

diff --git a/src/spfquery.c b/src/spfquery.c
new file mode 100644
index 0000000..8c642ee
--- /dev/null
+++ b/src/spfquery.c
@@ -0,0 +1,98 @@
+#include <string.h>
+#include <unistd.h>
+#include "buffer.h"
+#include "stralloc.h"
+#include "alloc.h"
+#include "spf.h"
+#include "exit.h"
+#include "dns.h"
+#include "str.h"
+#include "byte.h"
+#include "logmsg.h"
+
+#define WHO "spfquery"
+
+void die(int e,char *s) { buffer_putsflush(buffer_2,s); _exit(e); }
+void die_nomem() { die(111,"fatal: out of memory\n"); }
+
+static stralloc heloin = {0};
+static stralloc mfin = {0};
+static stralloc spflocal = {0};
+static stralloc spfbounce = {0};
+
+int main(int argc,char **argv)
+{
+  stralloc spfip = {0};
+  int flag = 0;
+  int r;
+  int verbose = 0;
+  flagip6 = 1;
+
+  if (argc < 4) 
+    logmsg(WHO,100,USAGE,"spfquery <sender-ip> <sender-helo/ehlo> <envelope-from> [<local rules>] [-v(erbose) ]\n");
+
+  if (!stralloc_copys(&spfip,argv[1])) die_nomem();
+  if (!stralloc_0(&spfip)) die_nomem();
+  r = byte_chr(spfip.s,spfip.len,':');
+  if (r < spfip.len) flag = 1;
+
+  if (!stralloc_copys(&heloin,argv[2])) die_nomem();
+  if (!stralloc_0(&heloin)) die_nomem();
+
+  if (!stralloc_copys(&mfin,argv[3])) die_nomem();
+  if (!stralloc_0(&mfin)) die_nomem();
+
+  if (argc > 4) {
+    if (!byte_diff(argv[4],2,"-v")) verbose = 1;
+    else {
+      if (!stralloc_copys(&spflocal,argv[4])) die_nomem();
+      if (spflocal.len && !stralloc_0(&spflocal)) die_nomem();
+    }
+  }
+
+  if (argc > 5) {
+    if (!byte_diff(argv[5],2,"-v")) verbose = 1;
+  }
+
+  if (!stralloc_copys(&spfexplain,SPF_DEFEXP)) die_nomem();
+  if (!stralloc_0(&spfexplain)) die_nomem();
+
+  DNS_INIT
+  r = spf_query(spfip.s,heloin.s,mfin.s,"localhost",flag);
+  if (r == SPF_NOMEM) die_nomem();
+
+  buffer_puts(buffer_1,"result=");
+  switch (r) {
+    case SPF_ME:       buffer_puts(buffer_1,"loopback"); break;
+    case SPF_OK:       buffer_puts(buffer_1,"pass"); break;
+    case SPF_NONE:     buffer_puts(buffer_1,"none"); break;
+    case SPF_UNKNOWN:  buffer_puts(buffer_1,"unknown"); break;
+    case SPF_NEUTRAL:  buffer_puts(buffer_1,"neutral"); break;
+    case SPF_SOFTFAIL: buffer_puts(buffer_1,"softfail"); break;
+    case SPF_FAIL:     buffer_puts(buffer_1,"fail"); break;
+    case SPF_ERROR:    buffer_puts(buffer_1,"error"); break;
+    case SPF_SYNTAX:   buffer_puts(buffer_1,"IP address syntax error"); break;
+    default:           buffer_puts(buffer_1,"undefined"); break; 
+  }
+
+  buffer_putsflush(buffer_1,"\n");
+  if (r == SPF_SYNTAX) _exit(1);
+
+  if (verbose) {
+    buffer_puts(buffer_1,"SPF records read: \n");
+    buffer_put(buffer_1,spfrecord.s,spfrecord.len);
+  }
+
+  buffer_puts(buffer_1,"SPF information evaluated: ");
+  buffer_put(buffer_1,spfinfo.s,spfinfo.len);
+  buffer_putsflush(buffer_1,"\n");
+
+  if (r == SPF_FAIL) {
+    buffer_puts(buffer_1,"SPF results returned: ");
+    if (!spf_parse(&spfbounce,spfexpmsg.s,expdomain.s)) die_nomem();
+    buffer_put(buffer_1,spfbounce.s,spfbounce.len);
+    buffer_putsflush(buffer_1,"\n"); 
+  }
+
+  _exit(0);
+}
-- 
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