date and time created 91/07/26 19:00:38 by eric

SCCS-vsn: usr.sbin/sendmail/src/udb.c 5.1

diff --git a/usr/src/usr.sbin/sendmail/src/udb.c b/usr/src/usr.sbin/sendmail/src/udb.c
new file mode 100644 (file)
index 0000000..e67be91
--- /dev/null
+++ b/usr/src/usr.sbin/sendmail/src/udb.c
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 1983 Eric P. Allman
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * %sccs.include.redist.c%
+ */
+
+#ifndef lint
+static char sccsid [] = "@(#)udb.c     5.1 (Berkeley) %G%";
+#endif
+
+#include "sendmail.h"
+
+#ifdef USERDB
+
+#include <sys/file.h>
+#include <db.h>
+
+/*
+**  UDBEXPAND -- look up user in database and expand
+**
+**     Parameters:
+**             a -- address to expand.
+**             sendq -- pointer to head of sendq to put the expansions in.
+**
+**     Returns:
+**             none.
+**
+**     Side Effects:
+**             Modifies sendq.
+*/
+
+void
+udbexpand(a, sendq)
+       register ADDRESS *a;
+       ADDRESS **sendq;
+{
+       int i;
+       register char *p;
+       auto char *class;
+       auto char *list;
+       DBT key;
+       DBT info;
+       static DB *dbp = NULL;
+       register char *bp;
+       char buf[8192];
+
+       if (tTd(28, 1))
+               printf("expand(%s)\n", a->q_paddr);
+
+       /* make certain we are supposed to send to this address */
+       if (bitset(QDONTSEND, a->q_flags))
+               return;
+       CurEnv->e_to = a->q_paddr;
+
+       /* if necessary, open the database */
+       if (dbp == NULL)
+       {
+               if (UdbFileName == NULL || UdbFileName[0] == '\0')
+               {
+                       if (tTd(28, 4))
+                               printf("no userdb specified\n");
+                       return;
+               }
+               dbp = hash_open(UdbFileName, O_RDONLY, 0644, NULL);
+               if (dbp == NULL)
+               {
+                       extern int errno;
+
+                       if (tTd(28, 2))
+                               printf("cannot open %s: %d\n", UdbFileName, errno);
+                       return;
+               }
+       }
+
+       key.data = a->q_user;
+       key.size = strlen(key.data);
+       i = dbp->get(dbp, &key, &info, R_NOOVERWRITE);
+       if (i != 0 || info.size <= 0)
+       {
+               if (i < 0)
+                       syserr("udbexpand: db-get stat %s");
+               if (tTd(28, 2))
+                       printf("expand: no match on %s\n", key.data);
+               return;
+       }
+
+       /* extract the class (first string) and data (second string) */
+       i = strlen((char *) info.data) + 1;
+       p = (char *) info.data + i;
+       i = info.size - i;
+
+       /* use internal buffer if it will fit; otherwise malloc */
+       if (i < sizeof buf)
+               bp = buf;
+       else
+               bp = xalloc(i + 1);
+       bcopy(p, bp, i);
+       bp[i] = '\0';
+
+       if (tTd(28, 1))
+               printf("Class %s: %s\n", info.data, bp);
+
+       /* do special processing based on class */
+       if (strcmp((char *) info.data, "user") == 0)
+       {
+               message(Arpa_Info, "expanded to (%s) %s", info.data, bp);
+               AliasLevel++;
+               sendtolist(bp, a, sendq);
+               AliasLevel--;
+       }
+
+       /* free memory if we allocated it */
+       if (bp != buf)
+               free(bp);
+}
+
+#endif /* USERDB */