A bunch of new features. Allow empty responses on an inquiry.

assuan/ChangeLog

@@ -1,3 +1,16 @@
+2002-02-14  Werner Koch  <wk@gnupg.org>
+
+	* assuan-inquire.c (assuan_inquire): Check for a cancel command
+	and return ASSUAN_Canceled.  Allow for non-data inquiry.
+
+	* assuan.h: Add a few token specific error codes.
+
+2002-02-13  Werner Koch  <wk@gnupg.org>
+
+	* assuan-defs.h (assuan_context_s): New var CLIENT_PID.
+	* assuan-pipe-server.c (_assuan_new_context): set default value.
+	* assuan-socket-server.c (accept_connection): get the actual pid.
+
 2002-02-12  Werner Koch  <wk@gnupg.org>
 
 	* assuan-buffer.c (writen,readline) [USE_GNU_PT]: Use pth_read/write.

assuan/assuan-defs.h

@@ -77,6 +77,9 @@ struct assuan_context_s {
                      In socket mode, the pid of the server */
   int listen_fd;  /* The fd we are listening on (used by socket servers) */
 
+  pid_t client_pid; /* for a socket server the PID of the client or -1
+                       if not available */
+
   void (*deinit_handler)(ASSUAN_CONTEXT);  
   int (*accept_handler)(ASSUAN_CONTEXT);
   int (*finish_handler)(ASSUAN_CONTEXT);
@@ -92,7 +95,6 @@ struct assuan_context_s {
   void (*input_notify_fnc)(ASSUAN_CONTEXT, const char *);
   void (*output_notify_fnc)(ASSUAN_CONTEXT, const char *);
 
-
   int input_fd;   /* set by INPUT command */
   int output_fd;  /* set by OUTPUT command */
 
@@ -135,9 +137,3 @@ void _assuan_log_sanitized_string (const char *string);
 
 #endif /*ASSUAN_DEFS_H*/
 
-
-
-
-
-
-

assuan/assuan-inquire.c

@@ -126,9 +126,10 @@ free_membuf (struct membuf *mb)
  * @keyword: The keyword used for the inquire
  * @r_buffer: Returns an allocated buffer
  * @r_length: Returns the length of this buffer
- * @maxlen: If no 0, the size limit of the inquired data.
+ * @maxlen: If not 0, the size limit of the inquired data.
  * 
- * A Server may use this to Send an inquire
+ * A Server may use this to Send an inquire.  r_buffer, r_length and
+ * maxlen may all be NULL/0 to indicate that no real data is expected.
  * 
  * Return value: 0 on success or an ASSUAN error code
  **/
@@ -141,9 +142,12 @@ assuan_inquire (ASSUAN_CONTEXT ctx, const char *keyword,
   char cmdbuf[100];
   unsigned char *line, *p;
   int linelen;
+  int nodataexpected;
 
-  if (!ctx || !keyword || (10 + strlen (keyword) >= sizeof (cmdbuf))
-      || !r_buffer || !r_length )
+  if (!ctx || !keyword || (10 + strlen (keyword) >= sizeof (cmdbuf)))
+    return ASSUAN_Invalid_Value;
+  nodataexpected = !r_buffer && !r_length && !maxlen;
+  if (!nodataexpected && (!r_buffer || !r_length))
     return ASSUAN_Invalid_Value;
   if (!ctx->is_server)
     return ASSUAN_Not_A_Server;
@@ -151,7 +155,10 @@ assuan_inquire (ASSUAN_CONTEXT ctx, const char *keyword,
     return ASSUAN_Nested_Commands;
   
   ctx->in_inquire = 1;
-  init_membuf (&mb, maxlen? maxlen:1024, maxlen);
+  if (nodataexpected)
+    memset (&mb, 0, sizeof mb); /* avoid compiler warnings */
+  else
+    init_membuf (&mb, maxlen? maxlen:1024, maxlen);
 
   strcpy (stpcpy (cmdbuf, "INQUIRE "), keyword);
   rc = assuan_write_line (ctx, cmdbuf);
@@ -172,7 +179,12 @@ assuan_inquire (ASSUAN_CONTEXT ctx, const char *keyword,
       if (line[0] == 'E' && line[1] == 'N' && line[2] == 'D'
           && (!line[3] || line[3] == ' '))
         break; /* END command received*/
-      if (line[0] != 'D' || line[1] != ' ')
+      if (line[0] == 'C' && line[1] == 'A' && line[2] == 'N')
+        {
+          rc = ASSUAN_Canceled;
+          goto leave;
+        }
+      if (line[0] != 'D' || line[1] != ' ' || nodataexpected)
         {
           rc = ASSUAN_Unexpected_Command;
           goto leave;
@@ -205,13 +217,17 @@ assuan_inquire (ASSUAN_CONTEXT ctx, const char *keyword,
           goto leave;
         }
     }
-  
-  *r_buffer = get_membuf (&mb, r_length);
-  if (!*r_buffer)
-    rc = ASSUAN_Out_Of_Core;
+
+  if (!nodataexpected)
+    {
+      *r_buffer = get_membuf (&mb, r_length);
+      if (!*r_buffer)
+        rc = ASSUAN_Out_Of_Core;
+    }
 
  leave:
-  free_membuf (&mb);
+  if (!nodataexpected)
+    free_membuf (&mb);
   ctx->in_inquire = 0;
   return rc;
 }

assuan/assuan-pipe-server.c

@@ -64,6 +64,7 @@ _assuan_new_context (ASSUAN_CONTEXT *r_ctx)
   ctx->outbound.fd = -1;
 
   ctx->listen_fd = -1;
+  ctx->client_pid = (pid_t)-1;
   /* use the pipe server handler as a default */
   ctx->deinit_handler = deinit_pipe_server;
   ctx->accept_handler = accept_connection;

assuan/assuan-socket-server.c

@@ -38,6 +38,7 @@ accept_connection (ASSUAN_CONTEXT ctx)
   struct sockaddr_un clnt_addr;
   size_t len = sizeof clnt_addr;
 
+  ctx->client_pid = (pid_t)-1;
 #ifdef USE_GNU_PTH
   fd = pth_accept (ctx->listen_fd, (struct sockaddr*)&clnt_addr, &len );
 #else
@@ -49,6 +50,16 @@ accept_connection (ASSUAN_CONTEXT ctx)
       return ASSUAN_Accept_Failed;
     }
 
+#ifdef HAVE_SO_PEERCRED
+  {
+    struct ucred cr; 
+    int cl = sizeof cr;
+
+    if ( !getsockopt (fd, SOL_SOCKET, SO_PEERCRED, &cr, &cl) ) 
+      ctx->client_pid = cr.pid;
+  }
+#endif
+
   ctx->inbound.fd = fd;
   ctx->inbound.eof = 0;
   ctx->inbound.linelen = 0;

assuan/assuan.h

@@ -74,6 +74,8 @@ typedef enum {
   ASSUAN_Inquire_Error = 121,
   ASSUAN_Invalid_Option = 122,
 
+  ASSUAN_Not_Confirmed = 128,
+
   ASSUAN_Bad_Certificate = 201,
   ASSUAN_Bad_Certificate_Path = 202,
   ASSUAN_Missing_Certificate = 203,
@@ -89,6 +91,11 @@ typedef enum {
   ASSUAN_CRL_Too_Old = 303,
   ASSUAN_Not_Trusted = 304,
 
+  ASSUAN_Card_Error = 401,
+  ASSUAN_Invalid_Card = 402,
+  ASSUAN_No_PKCS15_App = 403,
+  ASSUAN_Card_Not_Present = 404
+
 } AssuanError;
 
 /* This is a list of pre-registered ASSUAN commands */