Implemented server main loop and started with import command.

sm/server.c

@@ -29,8 +29,153 @@
 #include "gpgsm.h"
 #include "../assuan/assuan.h"
 
+#define set_error(e,t) assuan_set_error (ctx, ASSUAN_ ## e, (t))
 
 
+/*  RECIPIENT <userID>
+
+  Set the recipient for the encryption.  <userID> should be the
+  internal representation of the key; the server may accept any other
+  way of specification [we will support this].  If this is a valid and
+  trusted recipient the server does respond with OK, otherwise the
+  return is an ERR with the reason why the recipient can't be used,
+  the encryption will then not be done for this recipient.  IF the
+  policy is not to encrypt at all if not all recipients are valid, the
+  client has to take care of this.  All RECIPIENT commands are
+  cumulative until a RESET or ENCRYPT command.  */
+static int 
+cmd_recipient (ASSUAN_CONTEXT ctx, char *line)
+{
+  
+
+  return set_error (Not_Implemented, "fixme");
+}
+
+
+/* ENCRYPT [armor]
+
+  Do the actual encryption process. Takes the plaintext from the INPUT
+  command, writes to the ciphertext to the file descriptor set with
+  the OUTPUT command, take the recipients form all the recipients set
+  so far.  If this command fails the clients should try to delete all
+  output currently done or otherwise mark it as invalid.  GPGSM does
+  ensure that there won't be any security problem with leftover data
+  on the output in this case.
+
+  This command should in general not fail, as all necessary checks
+  have been done while setting the recipients.  The input and output
+  pipes are closed.
+
+  The optional armor parameter may be used to request base64 encoded
+  output.  */
+static int 
+cmd_encrypt (ASSUAN_CONTEXT ctx, char *line)
+{
+  
+
+  return set_error (Not_Implemented, "fixme");
+}
+
+/* DECRYPT
+
+  This performs the decrypt operation after doing some check on the
+  internal state. (e.g. that only needed data has been set).  Because
+  it utilises the GPG-Agent for the session key decryption, there is
+  no need to ask the client for a protecting passphrase - GpgAgent
+  does take care of this but requesting this from the user. */
+static int 
+cmd_decrypt (ASSUAN_CONTEXT ctx, char *line)
+{
+  
+
+  return set_error (Not_Implemented, "fixme");
+}
+
+
+/* VERIFY
+
+  This does a verify operation on the message send to the input-FD.
+  The result is written out using status lines.  If an output FD was
+  given, the signed text will be written to that.
+
+  The behavior for detached signatures has not yet been specified.  */
+static int 
+cmd_verify (ASSUAN_CONTEXT ctx, char *line)
+{
+  
+
+  return set_error (Not_Implemented, "fixme");
+}
+
+
+/* SIGN
+
+   FIXME */
+static int 
+cmd_sign (ASSUAN_CONTEXT ctx, char *line)
+{
+  
+
+  return set_error (Not_Implemented, "fixme");
+}
+
+
+/* IMPORT
+
+  Import the certificates read form the input-fd, return status
+  message for each imported one.  The import checks the validity of
+  the certificate but not of the path.  It is possible to import
+  expired certificates.  */
+static int 
+cmd_import (ASSUAN_CONTEXT ctx, char *line)
+{
+  int fd = assuan_get_input_fd (ctx);
+
+  if (fd == -1)
+    return set_error (No_Input, NULL);
+
+  gpgsm_import (fd);
+
+  return 0;
+}
+
+
+
+
+/* Tell the assuan library about our commands */
+static int
+register_commands (ASSUAN_CONTEXT ctx)
+{
+  static struct {
+    const char *name;
+    int cmd_id;
+    int (*handler)(ASSUAN_CONTEXT, char *line);
+  } table[] = {
+    { "RECIPIENT",  0,  cmd_recipient },
+    { "ENCRYPT",    0,  cmd_encrypt },
+    { "DECRYPT",    0,  cmd_decrypt },
+    { "VERIFY",     0,  cmd_verify },
+    { "SIGN",       0,  cmd_sign },
+    { "IMPORT",     0,  cmd_import },
+    { "",     ASSUAN_CMD_INPUT, NULL }, 
+    { "",     ASSUAN_CMD_OUTPUT, NULL }, 
+    { NULL }
+  };
+  int i, j, rc;
+
+  for (i=j=0; table[i].name; i++)
+    {
+      rc = assuan_register_command (ctx,
+                                    table[i].cmd_id? table[i].cmd_id
+                                                   : (ASSUAN_CMD_USER + j++),
+                                    table[i].name, table[i].handler);
+      if (rc)
+        return rc;
+    } 
+  return 0;
+}
+
+/* Startup the server */
 void
 gpgsm_server (void)
 {
@@ -50,7 +195,44 @@ gpgsm_server (void)
                  assuan_strerror(rc));
       gpgsm_exit (2);
     }
+  rc = register_commands (ctx);
+  if (rc)
+    {
+      log_error ("failed to the register commands with Assuan: %s\n",
+                 assuan_strerror(rc));
+      gpgsm_exit (2);
+    }
+
+  log_info ("Assuan started\n");
+  for (;;)
+    {
+      rc = assuan_accept (ctx);
+      if (rc == -1)
+        {
+          log_info ("Assuan terminated\n");
+          break;
+        }
+      else if (rc)
+        {
+          log_info ("Assuan accept problem: %s\n", assuan_strerror (rc));
+          break;
+        }
+      
+      rc = assuan_process (ctx);
+      if (rc)
+        {
+          log_info ("Assuan processing failed: %s\n", assuan_strerror (rc));
+          continue;
+        }
+    }
 
 
   assuan_deinit_pipe_server (ctx);
 }
+
+
+
+
+
+
+