Malware: new connection type "f-prot6d" for FPSCAND protocol over TCP

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

diff --git a/src/src/malware.c b/src/src/malware.c
index 549422ebb93661c39ff07fc44921c4be101cd103..f9c4c414f71633c5af3c8bc21cca3b4a33f55a23 100644 (file)
--- a/src/src/malware.c
+++ b/src/src/malware.c
@@ -13,7 +13,7 @@
 #ifdef WITH_CONTENT_SCAN
 
 typedef enum {M_FPROTD, M_DRWEB, M_AVES, M_FSEC, M_KAVD, M_CMDL,
-               M_SOPHIE, M_CLAMD, M_SOCK, M_MKSD, M_AVAST} scanner_t;
+               M_SOPHIE, M_CLAMD, M_SOCK, M_MKSD, M_AVAST, M_FPROT6D} scanner_t;
 typedef enum {MC_NONE, MC_TCP, MC_UNIX, MC_STRM} contype_t;
 static struct scan
 {
@@ -34,6 +34,7 @@ static struct scan
   { M_SOCK,    US"sock",       US"/tmp/malware.sock",                MC_STRM },
   { M_MKSD,    US"mksd",       NULL,                                 MC_NONE },
   { M_AVAST,   US"avast",      US"/var/run/avast/scan.sock",         MC_STRM },
+  { M_FPROT6D, US"f-prot6d",   US"localhost 10200",                  MC_TCP },
   { -1,                NULL,           NULL, MC_NONE }         /* end-marker */
 };
 
@@ -84,6 +85,11 @@ static const uschar * ava_re_virus_str = US "(?!\\\\)\\t\\[L\\]\\d\\.\\d\\t\\d\\
 static const pcre * ava_re_clean = NULL;
 static const pcre * ava_re_virus = NULL;
 
+static const uschar * fprot6d_re_error_str = US "^\\d+\\s<(.+?)>$";
+static const uschar * fprot6d_re_virus_str = US "^\\d+\\s<infected:\\s+(.+?)>\\s+.+$";
+static const pcre * fprot6d_re_error = NULL;
+static const pcre * fprot6d_re_virus = NULL;
+
 
 
 /******************************************************************************/
@@ -1911,8 +1917,53 @@ if (!malware_ok)
                          sock);
        default:        break;
        }
+      break;
       }
+
+    case M_FPROT6D: /* "f-prot6d" scanner type ----------------------------------- */
+      {
+      int bread;
+      uschar * e;
+      uschar * linebuffer;
+      uschar * scanrequest;
+      uschar av_buffer[1024];
+
+      if ((!fprot6d_re_virus && !(fprot6d_re_virus = m_pcre_compile(fprot6d_re_virus_str, &errstr)))
+        || (!fprot6d_re_error && !(fprot6d_re_error = m_pcre_compile(fprot6d_re_error_str, &errstr))))
+        return malware_errlog_defer(errstr);
+
+      scanrequest = string_sprintf("SCAN FILE %s\n", eml_filename);
+      DEBUG(D_acl) debug_printf_indent("Malware scan: issuing %s: %s\n",
+        scanner_name, scanrequest);
+
+      if (m_sock_send(sock, scanrequest, Ustrlen(scanrequest), &errstr) < 0)
+        return m_errlog_defer(scanent, CUS callout_address, errstr);
+
+      bread = ip_recv(sock, av_buffer, sizeof(av_buffer), tmo-time(NULL));
+
+      if (bread <= 0)
+        return m_errlog_defer_3(scanent, CUS callout_address,
+          string_sprintf("unable to read from socket (%s)", strerror(errno)),
+          sock);
+
+      if (bread == sizeof(av_buffer))
+        return m_errlog_defer_3(scanent, CUS callout_address,
+          US"buffer too small", sock);
+
+      av_buffer[bread] = '\0';
+      linebuffer = string_copy(av_buffer);
+
+      m_sock_send(sock, US"QUIT\n", 5, 0);
+
+      if ((e = m_pcre_exec(fprot6d_re_error, linebuffer)))
+        return m_errlog_defer_3(scanent, CUS callout_address,
+          string_sprintf("scanner reported error (%s)", e), sock);
+
+      if (!(malware_name = m_pcre_exec(fprot6d_re_virus, linebuffer)))
+        malware_name = NULL;
+
       break;
+      }  /* f-prot6d */
   }    /* scanner type switch */
 
   if (sock >= 0)
@@ -2028,6 +2079,10 @@ if (!ava_re_clean)
   ava_re_clean = regex_must_compile(ava_re_clean_str, FALSE, TRUE);
 if (!ava_re_virus)
   ava_re_virus = regex_must_compile(ava_re_virus_str, FALSE, TRUE);
+if (!fprot6d_re_error)
+  fprot6d_re_error = regex_must_compile(fprot6d_re_error_str, FALSE, TRUE);
+if (!fprot6d_re_virus)
+  fprot6d_re_virus = regex_must_compile(fprot6d_re_virus_str, FALSE, TRUE);
 }
 
 #endif /*WITH_CONTENT_SCAN*/