X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsrc%2Fpdkim%2Fpdkim.c;h=074106b5da11f4c02db4e2df8fc1cedd9bd514a3;hb=8761187029d998a942eaa1c0cc26592f52245446;hp=f68324097083d73f06ffb93ae4b671b42f246eff;hpb=abca11df7f354c123b0ff8a9bfb89a669d7742d4;p=user%2Fhenk%2Fcode%2Fexim.git

diff --git a/src/src/pdkim/pdkim.c b/src/src/pdkim/pdkim.c
index f68324097..074106b5d 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;
@@ -822,7 +825,7 @@ for (pdkim_signature * sig = ctx->sig; sig; sig = sig->next)
   /* VERIFICATION --------------------------------------------------------- */
   /* Be careful that the header sig included a bodyash */
 
-    if (  sig->bodyhash.data
+    if (sig->bodyhash.data && sig->bodyhash.len == b->bh.len
        && memcmp(b->bh.data, sig->bodyhash.data, b->bh.len) == 0)
       {
       DEBUG(D_acl) debug_printf("DKIM [%s] Body hash compared OK\n", sig->domain);
@@ -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';
@@ -1922,6 +1925,7 @@ if (dot_stuffing) ctx->flags = PDKIM_DOT_TERM;
 /* The line-buffer is for message data, hence tainted */
 ctx->linebuf = store_get(PDKIM_MAX_BODY_LINE_LEN, TRUE);
 ctx->dns_txt_callback = dns_txt_callback;
+ctx->cur_header = string_get_tainted(36, TRUE);
 
 return ctx;
 }