X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/069c185c6386ddd0a43d3cd4bed99c69884afbfe..578a86d91941a0f722b87973d88e84ec2cf9a608:/pixie-client.c

diff --git a/pixie-client.c b/pixie-client.c
index 5b7c0dc..1597426 100644
--- a/pixie-client.c
+++ b/pixie-client.c
@@ -1,6 +1,6 @@
 /* -*-c-*-
  *
- * $Id: pixie-client.c,v 1.1 1999/12/22 15:58:41 mdw Exp $
+ * $Id: pixie-client.c,v 1.3 2004/04/08 01:36:15 mdw Exp $
  *
  * Simple passphrase pixie client (Unix-specific)
  *
@@ -27,14 +27,6 @@
  * MA 02111-1307, USA.
  */
 
-/*----- Revision history --------------------------------------------------* 
- *
- * $Log: pixie-client.c,v $
- * Revision 1.1  1999/12/22 15:58:41  mdw
- * Passphrase pixie support.
- *
- */
-
 /*----- Header files ------------------------------------------------------*/
 
 #include <errno.h>
@@ -101,7 +93,8 @@ fail_0:
  *		@char *buf@ = pointer to destination buffer
  *		@size_t sz@ = size of the buffer
  *
- * Returns:	Zero if all went well, nonzero if the read fails.
+ * Returns:	Zero if all went well, @-1@ if the read fails, @+1@ to
+ *		request the passphrase from the user.
  *
  * Use:		Reads a passphrase from the pixie.
  */
@@ -126,6 +119,8 @@ again:
     return (-1);
   if (strcmp(q, "INFO") == 0)
     goto again;
+  else if (strcmp(q, "MISSING") == 0)
+    return (+1);
   else if (strcmp(q, "OK") != 0)
     return (-1);
 
@@ -138,6 +133,46 @@ again:
   return (0);
 }
 
+/* --- @pixie_set@ --- *
+ *
+ * Arguments:	@int fd@ = pixie file descriptor
+ *		@const char *tag@ = pointer to tag string
+ *		@const char *phrase@ = pointer to passphrase string
+ *
+ * Returns:	---
+ *
+ * Use:		Sends a passphrase to the passphrase pixie.
+ */
+
+void pixie_set(int fd, const char *tag, const char *phrase)
+{
+  dstr d = DSTR_INIT;
+  char buf[16];
+  size_t sz = strlen(phrase);
+  char nl = '\n';
+  char *p, *q;
+
+  /* --- Send the request --- *
+   *
+   * I didn't want to copy it out of the caller's buffer.  @writev@ may
+   * produce a copy, too, so I didn't do that either.
+   */
+
+  dstr_putf(&d, "SET %s -- ", tag);
+  write(fd, d.buf, d.len);
+  write(fd, phrase, sz);
+  write(fd, &nl, 1);
+  dstr_destroy(&d);
+
+  /* --- Pick up the pieces --- */
+
+again:
+  pixie_fdline(fd, buf, sizeof(buf));
+  p = buf;
+  if ((q = str_getword(&p)) != 0 && strcmp(q, "INFO") == 0)
+    goto again;
+}
+
 /* --- @pixie_cancel@ --- *
  *
  * Arguments:	@int fd@ = pixie file descriptor