From: Martin Mares <mj@ucw.cz>
Date: Tue, 22 Jul 2014 15:14:03 +0000 (+0200)
Subject: Use Content-Length to determine mail length if available
X-Git-Tag: v1.8~5
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=f790f8303362f85c84b46f2f98bdfdce2df793bf;p=checkmail.git

Use Content-Length to determine mail length if available

Some programs do not escape "From " lines in the body of the mail,
so just seeking for "From " (even with proper date format) does not
work in general. However, in such cases, Content-Length is present.
---

diff --git a/cm.c b/cm.c
index e14c8fa..9a38a1d 100644
--- a/cm.c
+++ b/cm.c
@@ -354,6 +354,27 @@ mb_check(const char *p, int len)
   return 1;
 }
 
+static void
+mb_skip(int len)
+{
+  while (len)
+    {
+      int avail = mb_end - mb_cc;
+      if (!avail)
+	{
+	  if (mb_ll_get() < 0)
+	    return;
+	  len--;
+	}
+      else
+	{
+	  int next = (avail < len) ? avail : len;
+	  len -= next;
+	  mb_cc += next;
+	}
+    }
+}
+
 static void
 scan_mbox(struct mbox *b, struct stat *st)
 {
@@ -454,6 +475,7 @@ scan_mbox(struct mbox *b, struct stat *st)
       while ((c = mb_get()) >= 0 && c != '\n')
 	;
 
+      int content_length = -1;
       int new = 1;
       int flagged = 0;
       sender[0] = 0;
@@ -499,6 +521,8 @@ scan_mbox(struct mbox *b, struct stat *st)
 	    strcpy(sender, buf+5);
 	  else if (!strncasecmp(buf, "Subject:", 8))
 	    strcpy(subject, buf+8);
+	  else if (!strncasecmp(buf, "Content-Length:", 15))
+	    content_length = atoi(buf + 15);
 	}
 
       b->total++;
@@ -507,13 +531,16 @@ scan_mbox(struct mbox *b, struct stat *st)
       if (flagged)
 	b->flagged++;
       if (debug_mode > 1)
-	debug("new=%d flagged=%d sender=<%s> subject=<%s>\n", new, flagged, sender, subject);
+	debug("new=%d flagged=%d len=%d sender=<%s> subject=<%s>\n", new, flagged, content_length, sender, subject);
       if (new || (flagged && !b->snippet_is_new))
 	{
 	  b->snippet_is_new = new;
 	  prepare_snippets(b, sender, subject);
 	}
 
+      if (content_length >= 0)
+	mb_skip(content_length);
+
       int ct = 1;
       while (from[ct])
 	{