/**
* assuan_accept:
* @ctx: context
*
* Cancel any existing connection and wait for a connection from a
* client. The initial handshake is performed which may include an
* initial authentication or encryption negotiation.
*
* Return value: 0 on success or an error if the connection could for
* some reason not be established.
**/
assuan_error_t
assuan_accept (assuan_context_t ctx)
{
int rc;
const char *p, *pend;
if (!ctx)
return _assuan_error (ASSUAN_Invalid_Value);
if (ctx->pipe_mode > 1)
return -1; /* second invocation for pipemode -> terminate */
ctx->finish_handler (ctx);
rc = ctx->accept_handler (ctx);
if (rc)
return rc;
/* Send the hello. */
p = ctx->hello_line;
if (p && (pend = strchr (p, '\n')))
{ /* This is a multi line hello. Send all but the last line as
comments. */
do
{
rc = _assuan_write_line (ctx, "# ", p, pend - p);
if (rc)
return rc;
p = pend + 1;
pend = strchr (p, '\n');
}
while (pend);
rc = _assuan_write_line (ctx, "OK ", p, strlen (p));
}
else if (p)
rc = assuan_write_line (ctx, p);
else
rc = assuan_write_line (ctx, "OK Pleased to meet you");
if (rc)
return rc;
if (ctx->pipe_mode)
ctx->pipe_mode = 2;
return 0;
}
gpg_error_t
assuan_write_line (assuan_context_t ctx, const char *line)
{
size_t len;
const char *str;
if (! ctx)
return _assuan_error (ctx, GPG_ERR_ASS_INV_VALUE);
/* Make sure that we never take a LF from the user - this might
violate the protocol. */
str = strchr (line, '\n');
len = str ? (str - line) : strlen (line);
if (str)
_assuan_log_control_channel (ctx, 1,
"supplied line with LF - truncated",
NULL, 0, NULL, 0);
return _assuan_write_line (ctx, NULL, line, len);
}
assuan_error_t
assuan_write_line (assuan_context_t ctx, const char *line)
{
size_t len;
const char *s;
if (!ctx)
return ASSUAN_Invalid_Value;
/* Make sure that we never take a LF from the user - this might
violate the protocol. */
s = strchr (line, '\n');
len = s? (s-line) : strlen (line);
if (ctx->log_fp && s)
fprintf (ctx->log_fp, "%s[%u.%p] DBG: -> "
"[supplied line contained a LF -truncated]\n",
assuan_get_assuan_log_prefix (),
(unsigned int)getpid (), (void *)ctx);
return _assuan_write_line (ctx, NULL, line, len);
}