X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsrc%2Fpdkim%2Fpdkim.c;h=0ad4d12d8171288b0d085bcea8b386e8add4d1f3;hb=873db3a8000c99e3f0d0a62bb9f70672e1268047;hp=ca16e2b74958f1728bc8e9a48c26fa6798f69263;hpb=044152b326039eaaefc45e88ef501c4b7e615cef;p=user%2Fhenk%2Fcode%2Fexim.git

diff --git a/src/src/pdkim/pdkim.c b/src/src/pdkim/pdkim.c
index ca16e2b74..0ad4d12d8 100644
--- a/src/src/pdkim/pdkim.c
+++ b/src/src/pdkim/pdkim.c
@@ -720,9 +720,11 @@ return NULL;
 If we have to relax the data for this sig, return our copy of it. */
 
 static blob *
-pdkim_update_ctx_bodyhash(pdkim_bodyhash * b, blob * orig_data, blob * relaxed_data)
+pdkim_update_ctx_bodyhash(pdkim_bodyhash * b, const blob const * orig_data, blob * relaxed_data)
 {
-blob * canon_data = orig_data;
+const blob const * canon_data = orig_data;
+size_t left;
+
 /* Defaults to simple canon (no further treatment necessary) */
 
 if (b->canon_method == PDKIM_CANON_RELAXED)
@@ -767,16 +769,17 @@ if (b->canon_method == PDKIM_CANON_RELAXED)
   }
 
 /* Make sure we don't exceed the to-be-signed body length */
+left = canon_data->len;
 if (  b->bodylength >= 0
-   && b->signed_body_bytes + (unsigned long)canon_data->len > b->bodylength
+   && b->signed_body_bytes + left > b->bodylength
    )
-  canon_data->len = b->bodylength - b->signed_body_bytes;
+  left = b->bodylength - b->signed_body_bytes;
 
-if (canon_data->len > 0)
+if (left > 0)
   {
-  exim_sha_update(&b->body_hash_ctx, CUS canon_data->data, canon_data->len);
-  b->signed_body_bytes += canon_data->len;
-  DEBUG(D_acl) pdkim_quoteprint(canon_data->data, canon_data->len);
+  exim_sha_update(&b->body_hash_ctx, CUS canon_data->data, left);
+  b->signed_body_bytes += left;
+  DEBUG(D_acl) pdkim_quoteprint(canon_data->data, left);
   }
 
 return relaxed_data;
@@ -1003,7 +1006,7 @@ else
       last_sig->next = sig;
       }
 
-    if (--dkim_collect_input == 0)
+    if (dkim_collect_input && --dkim_collect_input == 0)
       {
       ctx->headers = pdkim_prepend_stringlist(ctx->headers, ctx->cur_header->s);
       ctx->cur_header->s[ctx->cur_header->ptr = 0] = '\0';