From b732a73bc773789894466b0e5320b2f1fe42c7e9 Mon Sep 17 00:00:00 2001
From: John Denker <jsd@av8n.com>
Date: Fri, 1 Jun 2012 18:58:45 -0700
Subject: original, as downloaded from
 http://www.qmail.org/netqmail-1.06.tar.gz

---
 cdbmss.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 cdbmss.c

(limited to 'cdbmss.c')

diff --git a/cdbmss.c b/cdbmss.c
new file mode 100644
index 0000000..2d8f367
--- /dev/null
+++ b/cdbmss.c
@@ -0,0 +1,65 @@
+#include "readwrite.h"
+#include "seek.h"
+#include "alloc.h"
+#include "cdbmss.h"
+
+int cdbmss_start(c,fd)
+struct cdbmss *c;
+int fd;
+{
+  cdbmake_init(&c->cdbm);
+  c->fd = fd;
+  c->pos = sizeof(c->cdbm.final);
+  substdio_fdbuf(&c->ss,write,fd,c->ssbuf,sizeof(c->ssbuf));
+  return seek_set(fd,(seek_pos) c->pos);
+}
+
+int cdbmss_add(c,key,keylen,data,datalen)
+struct cdbmss *c;
+unsigned char *key;
+unsigned int keylen;
+unsigned char *data;
+unsigned int datalen;
+{
+  uint32 h;
+  int i;
+
+  cdbmake_pack(c->packbuf,(uint32) keylen);
+  cdbmake_pack(c->packbuf + 4,(uint32) datalen);
+  if (substdio_put(&c->ss,c->packbuf,8) == -1) return -1;
+  if (substdio_put(&c->ss,key,keylen) == -1) return -1;
+  if (substdio_put(&c->ss,data,datalen) == -1) return -1;
+
+  h = CDBMAKE_HASHSTART;
+  for (i = 0;i < keylen;++i)
+    h = cdbmake_hashadd(h,(unsigned int) key[i]);
+
+  if (!cdbmake_add(&c->cdbm,h,c->pos,alloc)) return -1;
+
+  c->pos += 8 + keylen + datalen; /* XXX: overflow? */
+  return 0;
+}
+
+int cdbmss_finish(c)
+struct cdbmss *c;
+{
+  int i;
+  uint32 len;
+  uint32 u;
+
+  if (!cdbmake_split(&c->cdbm,alloc)) return -1;
+
+  for (i = 0;i < 256;++i) {
+    len = cdbmake_throw(&c->cdbm,c->pos,i);
+    for (u = 0;u < len;++u) {
+      cdbmake_pack(c->packbuf,c->cdbm.hash[u].h);
+      cdbmake_pack(c->packbuf + 4,c->cdbm.hash[u].p);
+      if (substdio_put(&c->ss,c->packbuf,8) == -1) return -1;
+      c->pos += 8; /* XXX: overflow? */
+    }
+  }
+
+  if (substdio_flush(&c->ss) == -1) return -1;
+  if (seek_begin(c->fd) == -1) return -1;
+  return substdio_putflush(&c->ss,c->cdbm.final,sizeof(c->cdbm.final));
+}
-- 
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