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158 lines
3.8 KiB
158 lines
3.8 KiB
/* assuan-listen.c - Wait for a connection (server)
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* Copyright (C) 2001, 2002, 2004 Free Software Foundation, Inc.
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*
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* This file is part of Assuan.
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*
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* Assuan is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Assuan is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include "assuan-defs.h"
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assuan_error_t
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assuan_set_hello_line (assuan_context_t ctx, const char *line)
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{
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if (!ctx)
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return _assuan_error (ASSUAN_Invalid_Value);
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if (!line)
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{
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xfree (ctx->hello_line);
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ctx->hello_line = NULL;
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}
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else
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{
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char *buf = xtrymalloc (3+strlen(line)+1);
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if (!buf)
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return _assuan_error (ASSUAN_Out_Of_Core);
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if (strchr (line, '\n'))
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strcpy (buf, line);
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else
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{
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strcpy (buf, "OK ");
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strcpy (buf+3, line);
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}
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xfree (ctx->hello_line);
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ctx->hello_line = buf;
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}
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return 0;
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}
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/**
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* assuan_accept:
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* @ctx: context
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*
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* Cancel any existing connection and wait for a connection from a
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* client. The initial handshake is performed which may include an
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* initial authentication or encryption negotiation.
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*
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* Return value: 0 on success or an error if the connection could for
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* some reason not be established.
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**/
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assuan_error_t
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assuan_accept (assuan_context_t ctx)
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{
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int rc;
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const char *p, *pend;
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if (!ctx)
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return _assuan_error (ASSUAN_Invalid_Value);
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if (ctx->pipe_mode > 1)
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return -1; /* second invocation for pipemode -> terminate */
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ctx->finish_handler (ctx);
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rc = ctx->accept_handler (ctx);
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if (rc)
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return rc;
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/* Send the hello. */
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p = ctx->hello_line;
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if (p && (pend = strchr (p, '\n')))
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{ /* This is a multi line hello. Send all but the last line as
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comments. */
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do
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{
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rc = _assuan_write_line (ctx, "# ", p, pend - p);
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if (rc)
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return rc;
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p = pend + 1;
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pend = strchr (p, '\n');
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}
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while (pend);
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rc = _assuan_write_line (ctx, "OK ", p, strlen (p));
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}
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else if (p)
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rc = assuan_write_line (ctx, p);
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else
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rc = assuan_write_line (ctx, "OK Pleased to meet you");
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if (rc)
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return rc;
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if (ctx->pipe_mode)
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ctx->pipe_mode = 2;
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return 0;
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}
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int
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assuan_get_input_fd (assuan_context_t ctx)
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{
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return ctx? ctx->input_fd : -1;
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}
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int
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assuan_get_output_fd (assuan_context_t ctx)
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{
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return ctx? ctx->output_fd : -1;
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}
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/* Close the fd descriptor set by the command INPUT FD=n. We handle
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this fd inside assuan so that we can do some initial checks */
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assuan_error_t
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assuan_close_input_fd (assuan_context_t ctx)
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{
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if (!ctx || ctx->input_fd == -1)
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return _assuan_error (ASSUAN_Invalid_Value);
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_assuan_close (ctx->input_fd);
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ctx->input_fd = -1;
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return 0;
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}
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/* Close the fd descriptor set by the command OUTPUT FD=n. We handle
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this fd inside assuan so that we can do some initial checks */
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assuan_error_t
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assuan_close_output_fd (assuan_context_t ctx)
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{
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if (!ctx || ctx->output_fd == -1)
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return _assuan_error (ASSUAN_Invalid_Value);
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_assuan_close (ctx->output_fd);
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ctx->output_fd = -1;
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return 0;
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}
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