Reduce number of places knowing about filename-construction for mbox file-for-scanning

diff --git a/src/src/functions.h b/src/src/functions.h
index a10b743c9e3dca69151351c237580f7fef578680..ec4aba6ecf61a4f0e48ff06105b2218360d8cfd8 100644 (file)
--- a/src/src/functions.h
+++ b/src/src/functions.h
@@ -420,7 +420,7 @@ extern BOOL    smtp_verify_helo(void);
 extern int     smtp_write_command(smtp_outblock *, BOOL, const char *, ...) PRINTF_FUNCTION(3,4);
 #ifdef WITH_CONTENT_SCAN
 extern int     spam(const uschar **);
-extern FILE   *spool_mbox(unsigned long *, const uschar *);
+extern FILE   *spool_mbox(unsigned long *, const uschar *, uschar **);
 #endif
 extern BOOL    spool_move_message(uschar *, uschar *, uschar *, uschar *);
 extern uschar *spool_dname(const uschar *, uschar *);

diff --git a/src/src/malware.c b/src/src/malware.c
index f9c4c414f71633c5af3c8bc21cca3b4a33f55a23..e995f47b4e35aafc9673d7416cfdafd3a3848bae 100644 (file)
--- a/src/src/malware.c
+++ b/src/src/malware.c
@@ -413,16 +413,16 @@ is via malware(), or there's malware_in_file() used for testing/debugging.
 
 Arguments:
   malware_re    match condition for "malware="
-  eml_filename  the file holding the email to be scanned
+  scan_filename  the file holding the email to be scanned, if we're faking
+               this up for the -bmalware test, else NULL
   timeout      if nonzero, non-default timeoutl
-  faking        whether or not we're faking this up for the -bmalware test
 
 Returns:        Exim message processing code (OK, FAIL, DEFER, ...)
                 where true means malware was found (condition applies)
 */
 static int
-malware_internal(const uschar * malware_re, const uschar * eml_filename,
-  int timeout, BOOL faking)
+malware_internal(const uschar * malware_re, const uschar * scan_filename,
+  int timeout)
 {
 int sep = 0;
 const uschar *av_scanner_work = av_scanner;
@@ -435,21 +435,24 @@ struct scan * scanent;
 const uschar * scanner_options;
 int sock = -1;
 time_t tmo;
+uschar * eml_filename, * eml_dir;
 
-/* make sure the eml mbox file is spooled up */
-if (!(mbox_file = spool_mbox(&mbox_size, faking ? eml_filename : NULL)))
+if (!malware_re)
+  return FAIL;         /* empty means "don't match anything" */
+
+/* Ensure the eml mbox file is spooled up */
+
+if (!(mbox_file = spool_mbox(&mbox_size, scan_filename, &eml_filename)))
   return malware_errlog_defer(US"error while creating mbox spool file");
 
-/* none of our current scanners need the mbox
-   file as a stream, so we can close it right away */
-(void)fclose(mbox_file);
+/* None of our current scanners need the mbox file as a stream (they use
+the name), so we can close it right away.  Get the directory too. */
 
-if (!malware_re)
-  return FAIL;         /* empty means "don't match anything" */
+(void) fclose(mbox_file);
+eml_dir = string_copyn(eml_filename, Ustrrchr(eml_filename, '/') - eml_filename);
 
 /* parse 1st option */
-  if ( (strcmpic(malware_re, US"false") == 0) ||
-     (Ustrcmp(malware_re,"0") == 0) )
+if (strcmpic(malware_re, US"false") == 0  ||  Ustrcmp(malware_re,"0") == 0)
   return FAIL;         /* explicitly no matching */
 
 /* special cases (match anything except empty) */
@@ -1091,8 +1094,7 @@ if (!malware_ok)
        }
       scanner_fd = fileno(scanner_out);
 
-      file_name = string_sprintf("%s/scan/%s/%s_scanner_output",
-                               spool_directory, message_id, message_id);
+      file_name = string_sprintf("%s/%s_scanner_output", eml_dir, message_id);
 
       if (!(scanner_record = modefopen(file_name, "wb", SPOOL_MODE)))
        {
@@ -1720,8 +1722,7 @@ if (!malware_ok)
        return m_errlog_defer_3(scanent, NULL, errstr, sock);
 
       /* prepare scanner call - security depends on expansions check above */
-      commandline = string_sprintf("%s/scan/%s/%s.eml", spool_directory, message_id, message_id);
-      commandline = string_sprintf( CS sockline_scanner, CS commandline);
+      commandline = string_sprintf( CS sockline_scanner, CS eml_filename);
 
 
       /* Pass the command string to the socket */
@@ -1844,8 +1845,7 @@ if (!malware_ok)
                }
              else
                {
-               scanrequest = string_sprintf("SCAN %s/scan/%s\n",
-                   spool_directory, message_id);
+               scanrequest = string_sprintf("SCAN %s\n", eml_dir);
                avast_stage = AVA_RSP;          /* just sent command */
                }
 
@@ -2000,14 +2000,9 @@ Returns:      Exim message processing code (OK, FAIL, DEFER, ...)
 int
 malware(const uschar * malware_re, int timeout)
 {
-uschar * scan_filename;
-int ret;
+int ret = malware_internal(malware_re, NULL, timeout);
 
-scan_filename = string_sprintf("%s/scan/%s/%s.eml",
-                 spool_directory, message_id, message_id);
-ret = malware_internal(malware_re, scan_filename, timeout, FALSE);
 if (ret == DEFER) av_failed = TRUE;
-
 return ret;
 }
 
@@ -2045,7 +2040,7 @@ recipients_list = NULL;
 receive_add_recipient(US"malware-victim@example.net", -1);
 enable_dollar_recipients = TRUE;
 
-ret = malware_internal(US"*", eml_filename, 0,  TRUE);
+ret = malware_internal(US"*", eml_filename, 0);
 
 Ustrncpy(spooled_message_id, message_id, sizeof(spooled_message_id));
 spool_mbox_ok = 1;

diff --git a/src/src/mime.c b/src/src/mime.c
index 3a30e6e4c7916715a60fcb2f62fde16c73a2c232..80e820b2bcd0123917e92a2546c774b32c720194 100644 (file)
--- a/src/src/mime.c
+++ b/src/src/mime.c
@@ -217,9 +217,8 @@ mime_decode(const uschar **listptr)
 {
 int sep = 0;
 const uschar *list = *listptr;
-uschar *option;
-uschar option_buffer[1024];
-uschar decode_path[1024];
+uschar * option;
+uschar * decode_path;
 FILE *decode_file = NULL;
 long f_pos = 0;
 ssize_t size_counter = 0;
@@ -229,12 +228,10 @@ if (!mime_stream || (f_pos = ftell(mime_stream)) < 0)
   return FAIL;
 
 /* build default decode path (will exist since MBOX must be spooled up) */
-(void)string_format(decode_path,1024,"%s/scan/%s",spool_directory,message_id);
+decode_path = string_sprintf("%s/scan/%s", spool_directory, message_id);
 
 /* try to find 1st option */
-if ((option = string_nextinlist(&list, &sep,
-                               option_buffer,
-                               sizeof(option_buffer))) != NULL)
+if ((option = string_nextinlist(&list, &sep, NULL, 0)))
   {
   /* parse 1st option */
   if ((Ustrcmp(option,"false") == 0) || (Ustrcmp(option,"0") == 0))

diff --git a/src/src/receive.c b/src/src/receive.c
index 64a8d511ca46637efc9bf58441fb8bfa329ca380..731c76d774a63136540c814423b1db1f874126e2 100644 (file)
--- a/src/src/receive.c
+++ b/src/src/receive.c
@@ -1306,36 +1306,30 @@ unsigned long mbox_size;
 header_line *my_headerlist;
 uschar *user_msg, *log_msg;
 int mime_part_count_buffer = -1;
+uschar * mbox_filename;
 int rc = OK;
 
 memset(CS rfc822_file_path,0,2048);
 
 /* check if it is a MIME message */
-my_headerlist = header_list;
-while (my_headerlist != NULL)
-  {
-  /* skip deleted headers */
-  if (my_headerlist->type == '*')
-    {
-    my_headerlist = my_headerlist->next;
-    continue;
-    }
-  if (strncmpic(my_headerlist->text, US"Content-Type:", 13) == 0)
+
+for (my_headerlist = header_list; my_headerlist; my_headerlist = my_headerlist->next)
+  if (  my_headerlist->type != '*'                     /* skip deleted headers */
+     && strncmpic(my_headerlist->text, US"Content-Type:", 13) == 0
+     )
     {
     DEBUG(D_receive) debug_printf("Found Content-Type: header - executing acl_smtp_mime.\n");
     goto DO_MIME_ACL;
     }
-  my_headerlist = my_headerlist->next;
-  }
 
 DEBUG(D_receive) debug_printf("No Content-Type: header - presumably not a MIME message.\n");
 return TRUE;
 
 DO_MIME_ACL:
+
 /* make sure the eml mbox file is spooled up */
-mbox_file = spool_mbox(&mbox_size, NULL);
-if (mbox_file == NULL) {
-  /* error while spooling */
+if (!(mbox_file = spool_mbox(&mbox_size, NULL, &mbox_filename)))
+  {                                                            /* error while spooling */
   log_write(0, LOG_MAIN|LOG_PANIC,
          "acl_smtp_mime: error while creating mbox spool file, message temporarily rejected.");
   Uunlink(spool_name);
@@ -1347,7 +1341,7 @@ if (mbox_file == NULL) {
   message_id[0] = 0;            /* Indicate no message accepted */
   *smtp_reply_ptr = US"";       /* Indicate reply already sent */
   return FALSE;                 /* Indicate skip to end of receive function */
-};
+  }
 
 mime_is_rfc822 = 0;
 
@@ -1371,14 +1365,13 @@ if (Ustrlen(rfc822_file_path) > 0)
 /* check if we must check any message/rfc822 attachments */
 if (rc == OK)
   {
-  uschar temp_path[1024];
+  uschar * scandir;
   struct dirent * entry;
   DIR * tempdir;
 
-  (void) string_format(temp_path, sizeof(temp_path), "%s/scan/%s",
-    spool_directory, message_id);
+  scandir = string_copyn(mbox_filename, Ustrrchr(mbox_filename, '/') - mbox_filename);
 
-  tempdir = opendir(CS temp_path);
+  tempdir = opendir(CS scandir);
   for (;;)
     {
     if (!(entry = readdir(tempdir)))
@@ -1386,7 +1379,7 @@ if (rc == OK)
     if (strncmpic(US entry->d_name, US"__rfc822_", 9) == 0)
       {
       (void) string_format(rfc822_file_path, sizeof(rfc822_file_path),
-       "%s/scan/%s/%s", spool_directory, message_id, entry->d_name);
+       "%s/%s", scandir, entry->d_name);
       DEBUG(D_receive) debug_printf("RFC822 attachment detected: running MIME ACL for '%s'\n",
        rfc822_file_path);
       break;

diff --git a/src/src/regex.c b/src/src/regex.c
index 9274f9095bb83bd027129baa8872512d9699369b..3560bef529a813158ab690991fd650832da394de 100644 (file)
--- a/src/src/regex.c
+++ b/src/src/regex.c
@@ -105,7 +105,7 @@ regex_match_string = NULL;
 
 if (!mime_stream)                              /* We are in the DATA ACL */
   {
-  if (!(mbox_file = spool_mbox(&mbox_size, NULL)))
+  if (!(mbox_file = spool_mbox(&mbox_size, NULL, NULL)))
     {                                          /* error while spooling */
     log_write(0, LOG_MAIN|LOG_PANIC,
           "regex acl condition: error while creating mbox spool file");

diff --git a/src/src/spam.c b/src/src/spam.c
index d4b95b2f929e8235865821c5bbe7f7d89927b9f4..477ab62b44b4a606a2aa93a077eef41c41e75b3b 100644 (file)
--- a/src/src/spam.c
+++ b/src/src/spam.c
@@ -265,9 +265,7 @@ if (spam_ok && Ustrcmp(prev_user_name, user_name) == 0)
   return override ? OK : spam_rc;
 
 /* make sure the eml mbox file is spooled up */
-mbox_file = spool_mbox(&mbox_size, NULL);
-
-if (mbox_file == NULL)
+if (!(mbox_file = spool_mbox(&mbox_size, NULL, NULL)))
   {
   /* error while spooling */
   log_write(0, LOG_MAIN|LOG_PANIC,
@@ -287,8 +285,7 @@ start = time(NULL);
   /* Check how many spamd servers we have
      and register their addresses */
   sep = 0;                             /* default colon-sep */
-  while ((address = string_nextinlist(&spamd_address_list_ptr, &sep,
-                                     NULL, 0)) != NULL)
+  while ((address = string_nextinlist(&spamd_address_list_ptr, &sep, NULL, 0)))
     {
     const uschar * sublist;
     int sublist_sep = -(int)' ';       /* default space-sep */

diff --git a/src/src/spool_mbox.c b/src/src/spool_mbox.c
index b1de39e7dee3a687fa04f5019799d4bcb094a128..89bdb7ddccc9e1f5c4d6468614fd1f1bc9dfe5f2 100644 (file)
--- a/src/src/spool_mbox.c
+++ b/src/src/spool_mbox.c
@@ -19,11 +19,17 @@ extern int spam_ok;
 int spool_mbox_ok = 0;
 uschar spooled_message_id[MESSAGE_ID_LENGTH+1];
 
-/* returns a pointer to the FILE, and puts the size in bytes into mbox_file_size
- * normally, source_file_override is NULL */
+/*
+Create an MBOX-style message file from the spooled files.
+
+Returns a pointer to the FILE, and puts the size in bytes into mbox_file_size.
+If mbox_fname is non-null, fill in a pointer to the name.
+Normally, source_file_override is NULL
+*/
 
 FILE *
-spool_mbox(unsigned long *mbox_file_size, const uschar *source_file_override)
+spool_mbox(unsigned long *mbox_file_size, const uschar *source_file_override,
+  uschar ** mbox_fname)
 {
 uschar message_subdir[2];
 uschar buffer[16384];
@@ -35,10 +41,13 @@ FILE *yield = NULL;
 header_line *my_headerlist;
 struct stat statbuf;
 int i, j;
-void *reset_point = store_get(0);
+void *reset_point;
+
+mbox_path = string_sprintf("%s/scan/%s/%s.eml",
+  spool_directory, message_id, message_id);
+if (mbox_fname) *mbox_fname = mbox_path;
 
-mbox_path = string_sprintf("%s/scan/%s/%s.eml", spool_directory, message_id,
-  message_id);
+reset_point = store_get(0);
 
 /* Skip creation if already spooled out as mbox file */
 if (!spool_mbox_ok)
@@ -108,7 +117,7 @@ if (!spool_mbox_ok)
     }
 
   /* copy body file */
-  if (source_file_override == NULL)
+  if (!source_file_override)
     {
     message_subdir[1] = '\0';
     for (i = 0; i < 2; i++)