Malware: make "sock" cmdline default usable. Bug 2111

[exim.git] / src / src / malware.c

diff --git a/src/src/malware.c b/src/src/malware.c
index 94a271b471f8c0903e1b361bb6ee605ddc2b0fea..d7be4edbb599b51a76351db980d35d0cb669c50a 100644 (file)
--- a/src/src/malware.c
+++ b/src/src/malware.c
@@ -202,7 +202,11 @@ const pcre * cre = NULL;
 if (!(list_ele = string_nextinlist(list, sep, NULL, 0)))
   *errstr = US listerr;
 else
+  {
+  DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "RE: ",
+    string_printing(list_ele));
   cre = m_pcre_compile(CUS list_ele, errstr);
+  }
 return cre;
 }
 
@@ -472,9 +476,6 @@ if (  strcmpic(malware_re,US"true") == 0
 else if (!(re = m_pcre_compile(malware_re, &errstr)))
   return malware_errlog_defer(errstr);
 
-/* Reset sep that is set by previous string_nextinlist() call */
-sep = 0;
-
 /* if av_scanner starts with a dollar, expand it first */
 if (*av_scanner == '$')
   {
@@ -506,10 +507,15 @@ if (!malware_ok)
        scanner_name));
     if (strcmpic(scanner_name, US scanent->name) != 0)
       continue;
+    DEBUG(D_acl) debug_printf_indent("Malware scan:  %s tmo=%s\n",
+      scanner_name, readconf_printtime(timeout));
+
     if (!(scanner_options = string_nextinlist(&av_scanner_work, &sep, NULL, 0)))
       scanner_options = scanent->options_default;
     if (scanent->conn == MC_NONE)
       break;
+
+    DEBUG(D_acl) debug_printf_indent("%15s%10s%s\n", "", "socket: ", scanner_options);
     switch(scanent->conn)
     {
     case MC_TCP:  sock = ip_tcpsocket(scanner_options, &errstr, 5);    break;
@@ -521,7 +527,6 @@ if (!malware_ok)
       return m_errlog_defer(scanent, CUS callout_address, errstr);
     break;
   }
-  DEBUG(D_acl) debug_printf_indent("Malware scan: %s tmo %s\n", scanner_name, readconf_printtime(timeout));
 
   switch (scanent->scancode)
     {
@@ -1701,8 +1706,10 @@ b_seek:   err = errno;
       const pcre *sockline_name_re;
 
       /* find scanner command line */
-      if ((sockline_scanner = string_nextinlist(&av_scanner_work, &sep,
-                                         NULL, 0)))
+      if (  (sockline_scanner = string_nextinlist(&av_scanner_work, &sep,
+                                         NULL, 0))
+        && *sockline_scanner
+        )
       {        /* check for no expansions apart from one %s */
        uschar * s = Ustrchr(sockline_scanner, '%');
        if (s++)
@@ -1712,6 +1719,8 @@ b_seek:   err = errno;
       }
       else
        sockline_scanner = sockline_scanner_default;
+      DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "cmdline: ",
+       string_printing(sockline_scanner));
 
       /* find scanner output trigger */
       sockline_trig_re = m_pcre_nextinlist(&av_scanner_work, &sep,
@@ -1727,7 +1736,8 @@ b_seek:   err = errno;
 
       /* prepare scanner call - security depends on expansions check above */
       commandline = string_sprintf( CS sockline_scanner, CS eml_filename);
-
+      DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "expanded: ",
+       string_printing(commandline));
 
       /* Pass the command string to the socket */
       if (m_sock_send(sock, commandline, Ustrlen(commandline), &errstr) < 0)
@@ -1746,12 +1756,16 @@ b_seek:   err = errno;
                US"buffer too small", sock);
       av_buffer[bread] = '\0';
       linebuffer = string_copy(av_buffer);
+      DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "answer: ",
+       string_printing(linebuffer));
 
       /* try trigger match */
       if (regex_match_and_setup(sockline_trig_re, linebuffer, 0, -1))
        {
        if (!(malware_name = m_pcre_exec(sockline_name_re, av_buffer)))
          malware_name = US "unknown";
+       DEBUG(D_acl) debug_printf_indent("%15s%10s'%s'\n", "", "name: ",
+         string_printing(malware_name));
        }
       else /* no virus found */
        malware_name = NULL;