diff options
Diffstat (limited to 'scd/command.c')
| -rw-r--r-- | scd/command.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/scd/command.c b/scd/command.c new file mode 100644 index 000000000..b2631bb25 --- /dev/null +++ b/scd/command.c @@ -0,0 +1,174 @@ +/* command.c - SCdaemon command handler + * Copyright (C) 2001, 2002 Free Software Foundation, Inc. + * + * This file is part of GnuPG. + * + * GnuPG is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * GnuPG is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + */ + +/* FIXME: we should not use the default assuan buffering but setup + some buffering in secure mempory to protect session keys etc. */ + +#include <config.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <unistd.h> + +#include "scdaemon.h" +#include "../assuan/assuan.h" + +#define set_error(e,t) assuan_set_error (ctx, ASSUAN_ ## e, (t)) + +/* Data used to associate an Assuan context with local server data */ +struct server_local_s { + ASSUAN_CONTEXT assuan_ctx; +}; + + + + +static void +reset_notify (ASSUAN_CONTEXT ctx) +{ +/* CTRL ctrl = assuan_get_pointer (ctx); */ + + +} + + +static int +option_handler (ASSUAN_CONTEXT ctx, const char *key, const char *value) +{ +/* CTRL ctrl = assuan_get_pointer (ctx); */ + +/* if (!strcmp (key, "foo")) */ +/* { */ +/* } */ +/* else */ +/* return ASSUAN_Invalid_Option; */ + + 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[] = { + { "", 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; + } + assuan_set_hello_line (ctx, "GNU Privacy Guard's Smartcard server ready"); + + assuan_register_reset_notify (ctx, reset_notify); + assuan_register_option_handler (ctx, option_handler); + return 0; +} + + +/* Startup the server. If LISTEN_FD is given as -1, this is simple + piper server, otherwise it is a regular server */ +void +scd_command_handler (int listen_fd) +{ + int rc; + ASSUAN_CONTEXT ctx; + struct server_control_s ctrl; + + memset (&ctrl, 0, sizeof ctrl); + scd_init_default_ctrl (&ctrl); + + if (listen_fd == -1) + { + int filedes[2]; + + filedes[0] = 0; + filedes[1] = 1; + rc = assuan_init_pipe_server (&ctx, filedes); + } + else + { + rc = assuan_init_socket_server (&ctx, listen_fd); + } + if (rc) + { + log_error ("failed to initialize the server: %s\n", + assuan_strerror(rc)); + scd_exit (2); + } + rc = register_commands (ctx); + if (rc) + { + log_error ("failed to register commands with Assuan: %s\n", + assuan_strerror(rc)); + scd_exit (2); + } + assuan_set_pointer (ctx, &ctrl); + ctrl.server_local = xcalloc (1, sizeof *ctrl.server_local); + ctrl.server_local->assuan_ctx = ctx; + + if (DBG_ASSUAN) + assuan_set_log_stream (ctx, log_get_stream ()); + + for (;;) + { + rc = assuan_accept (ctx); + if (rc == -1) + { + 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_server (ctx); +} |