90beb50551
* assuan/: Update files to 2002-11-10 version of assuan. gpgme/ 2003-02-01 Marcus Brinkmann <marcus@g10code.de> * engine-gpgsm.c (map_assuan_error): Replace ASSUAN_Bad_Certificate_Path with ASSUAN_Bad_Certificate_Chain. (gpgsm_new): Use assuan_pipe_connect instead assuan_pipe_connect2. * util.h (DIMof): Remove macro. * ops.h (_gpgme_op_event_cb, _gpgme_op_event_cb_user, _gpgme_data_unread): Prototypes removed.
709 lines
18 KiB
C
709 lines
18 KiB
C
/* assuan-handler.c - dispatch commands
|
||
* Copyright (C) 2001, 2002 Free Software Foundation, Inc.
|
||
*
|
||
* This file is part of Assuan.
|
||
*
|
||
* Assuan is free software; you can redistribute it and/or modify it
|
||
* under the terms of the GNU Lesser General Public License as
|
||
* published by the Free Software Foundation; either version 2.1 of
|
||
* the License, or (at your option) any later version.
|
||
*
|
||
* Assuan 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
|
||
* Lesser General Public License for more details.
|
||
*
|
||
* You should have received a copy of the GNU Lesser 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
|
||
*/
|
||
|
||
#include <config.h>
|
||
#include <stdlib.h>
|
||
#include <stdio.h>
|
||
#include <string.h>
|
||
|
||
#include "assuan-defs.h"
|
||
|
||
#define spacep(p) (*(p) == ' ' || *(p) == '\t')
|
||
#define digitp(a) ((a) >= '0' && (a) <= '9')
|
||
|
||
|
||
#if !HAVE_FOPENCOOKIE
|
||
/* Provide structure for our dummy replacement function. Usually this
|
||
is defined in ../common/util.h but assuan should be self
|
||
contained. */
|
||
/* Fixme: Remove fopencoookie :-(( */
|
||
typedef struct
|
||
{
|
||
ssize_t (*read)(void*,char*,size_t);
|
||
ssize_t (*write)(void*,const char*,size_t);
|
||
int (*seek)(void*,off_t*,int);
|
||
int (*close)(void*);
|
||
} _IO_cookie_io_functions_t;
|
||
typedef _IO_cookie_io_functions_t cookie_io_functions_t;
|
||
FILE *fopencookie (void *cookie, const char *opentype,
|
||
cookie_io_functions_t funclist);
|
||
#endif /*!HAVE_FOPENCOOKIE*/
|
||
|
||
|
||
|
||
|
||
static int
|
||
dummy_handler (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
return set_error (ctx, Server_Fault, "no handler registered");
|
||
}
|
||
|
||
|
||
static int
|
||
std_handler_nop (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
return 0; /* okay */
|
||
}
|
||
|
||
static int
|
||
std_handler_cancel (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
if (ctx->cancel_notify_fnc)
|
||
ctx->cancel_notify_fnc (ctx);
|
||
return set_error (ctx, Not_Implemented, NULL);
|
||
}
|
||
|
||
static int
|
||
std_handler_option (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
char *key, *value, *p;
|
||
|
||
for (key=line; spacep (key); key++)
|
||
;
|
||
if (!*key)
|
||
return set_error (ctx, Syntax_Error, "argument required");
|
||
if (*key == '=')
|
||
return set_error (ctx, Syntax_Error, "no option name given");
|
||
for (value=key; *value && !spacep (value) && *value != '='; value++)
|
||
;
|
||
if (*value)
|
||
{
|
||
if (spacep (value))
|
||
*value++ = 0; /* terminate key */
|
||
for (; spacep (value); value++)
|
||
;
|
||
if (*value == '=')
|
||
{
|
||
*value++ = 0; /* terminate key */
|
||
for (; spacep (value); value++)
|
||
;
|
||
if (!*value)
|
||
return set_error (ctx, Syntax_Error, "option argument expected");
|
||
}
|
||
if (*value)
|
||
{
|
||
for (p = value + strlen(value) - 1; p > value && spacep (p); p--)
|
||
;
|
||
if (p > value)
|
||
*++p = 0; /* strip trailing spaces */
|
||
}
|
||
}
|
||
|
||
if (*key == '-' && key[1] == '-' && key[2])
|
||
key += 2; /* the double dashes are optional */
|
||
if (*key == '-')
|
||
return set_error (ctx, Syntax_Error,
|
||
"option should not begin with one dash");
|
||
|
||
if (ctx->option_handler_fnc)
|
||
return ctx->option_handler_fnc (ctx, key, value);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
std_handler_bye (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
if (ctx->bye_notify_fnc)
|
||
ctx->bye_notify_fnc (ctx);
|
||
assuan_close_input_fd (ctx);
|
||
assuan_close_output_fd (ctx);
|
||
return -1; /* pretty simple :-) */
|
||
}
|
||
|
||
static int
|
||
std_handler_auth (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
return set_error (ctx, Not_Implemented, NULL);
|
||
}
|
||
|
||
static int
|
||
std_handler_reset (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
if (ctx->reset_notify_fnc)
|
||
ctx->reset_notify_fnc (ctx);
|
||
assuan_close_input_fd (ctx);
|
||
assuan_close_output_fd (ctx);
|
||
return 0;
|
||
}
|
||
|
||
static int
|
||
std_handler_end (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
return set_error (ctx, Not_Implemented, NULL);
|
||
}
|
||
|
||
static int
|
||
parse_cmd_input_output (ASSUAN_CONTEXT ctx, char *line, int *rfd)
|
||
{
|
||
char *endp;
|
||
|
||
if (strncmp (line, "FD=", 3))
|
||
return set_error (ctx, Syntax_Error, "FD=<n> expected");
|
||
line += 3;
|
||
if (!digitp (*line))
|
||
return set_error (ctx, Syntax_Error, "number required");
|
||
*rfd = strtoul (line, &endp, 10);
|
||
/* remove that argument so that a notify handler won't see it */
|
||
memset (line, ' ', endp? (endp-line):strlen(line));
|
||
|
||
if (*rfd == ctx->inbound.fd)
|
||
return set_error (ctx, Parameter_Conflict, "fd same as inbound fd");
|
||
if (*rfd == ctx->outbound.fd)
|
||
return set_error (ctx, Parameter_Conflict, "fd same as outbound fd");
|
||
return 0;
|
||
}
|
||
|
||
/* Format is INPUT FD=<n> */
|
||
static int
|
||
std_handler_input (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
int rc, fd;
|
||
|
||
rc = parse_cmd_input_output (ctx, line, &fd);
|
||
if (rc)
|
||
return rc;
|
||
ctx->input_fd = fd;
|
||
if (ctx->input_notify_fnc)
|
||
ctx->input_notify_fnc (ctx, line);
|
||
return 0;
|
||
}
|
||
|
||
/* Format is OUTPUT FD=<n> */
|
||
static int
|
||
std_handler_output (ASSUAN_CONTEXT ctx, char *line)
|
||
{
|
||
int rc, fd;
|
||
|
||
rc = parse_cmd_input_output (ctx, line, &fd);
|
||
if (rc)
|
||
return rc;
|
||
ctx->output_fd = fd;
|
||
if (ctx->output_notify_fnc)
|
||
ctx->output_notify_fnc (ctx, line);
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
/* This is a table with the standard commands and handler for them.
|
||
The table is used to initialize a new context and assuciate strings
|
||
and handlers with cmd_ids */
|
||
static struct {
|
||
const char *name;
|
||
int cmd_id;
|
||
int (*handler)(ASSUAN_CONTEXT, char *line);
|
||
int always; /* always initialize this command */
|
||
} std_cmd_table[] = {
|
||
{ "NOP", ASSUAN_CMD_NOP, std_handler_nop, 1 },
|
||
{ "CANCEL", ASSUAN_CMD_CANCEL, std_handler_cancel, 1 },
|
||
{ "OPTION", ASSUAN_CMD_OPTION, std_handler_option, 1 },
|
||
{ "BYE", ASSUAN_CMD_BYE, std_handler_bye, 1 },
|
||
{ "AUTH", ASSUAN_CMD_AUTH, std_handler_auth, 1 },
|
||
{ "RESET", ASSUAN_CMD_RESET, std_handler_reset, 1 },
|
||
{ "END", ASSUAN_CMD_END, std_handler_end, 1 },
|
||
|
||
{ "INPUT", ASSUAN_CMD_INPUT, std_handler_input },
|
||
{ "OUTPUT", ASSUAN_CMD_OUTPUT, std_handler_output },
|
||
{ "OPTION", ASSUAN_CMD_OPTION, std_handler_option, 1 },
|
||
{ NULL }
|
||
};
|
||
|
||
|
||
/**
|
||
* assuan_register_command:
|
||
* @ctx: the server context
|
||
* @cmd_id: An ID value for the command
|
||
* @cmd_name: A string with the command name
|
||
* @handler: The handler function to be called
|
||
*
|
||
* Register a handler to be used for a given command.
|
||
*
|
||
* The @cmd_name must be %NULL or an empty string for all @cmd_ids
|
||
* below %ASSUAN_CMD_USER because predefined values are used.
|
||
*
|
||
* Return value:
|
||
**/
|
||
int
|
||
assuan_register_command (ASSUAN_CONTEXT ctx,
|
||
int cmd_id, const char *cmd_name,
|
||
int (*handler)(ASSUAN_CONTEXT, char *))
|
||
{
|
||
int i;
|
||
|
||
if (cmd_name && !*cmd_name)
|
||
cmd_name = NULL;
|
||
|
||
if (cmd_id < ASSUAN_CMD_USER)
|
||
{
|
||
if (cmd_name)
|
||
return ASSUAN_Invalid_Value; /* must be NULL for these values*/
|
||
|
||
for (i=0; std_cmd_table[i].name; i++)
|
||
{
|
||
if (std_cmd_table[i].cmd_id == cmd_id)
|
||
{
|
||
cmd_name = std_cmd_table[i].name;
|
||
if (!handler)
|
||
handler = std_cmd_table[i].handler;
|
||
break;
|
||
}
|
||
}
|
||
if (!std_cmd_table[i].name)
|
||
return ASSUAN_Invalid_Value; /* not a pre-registered one */
|
||
}
|
||
|
||
if (!handler)
|
||
handler = dummy_handler;
|
||
|
||
if (!cmd_name)
|
||
return ASSUAN_Invalid_Value;
|
||
|
||
/* fprintf (stderr, "DBG-assuan: registering %d as `%s'\n", cmd_id, cmd_name); */
|
||
|
||
if (!ctx->cmdtbl)
|
||
{
|
||
ctx->cmdtbl_size = 50;
|
||
ctx->cmdtbl = xtrycalloc ( ctx->cmdtbl_size, sizeof *ctx->cmdtbl);
|
||
if (!ctx->cmdtbl)
|
||
return ASSUAN_Out_Of_Core;
|
||
ctx->cmdtbl_used = 0;
|
||
}
|
||
else if (ctx->cmdtbl_used >= ctx->cmdtbl_size)
|
||
{
|
||
struct cmdtbl_s *x;
|
||
|
||
x = xtryrealloc ( ctx->cmdtbl, (ctx->cmdtbl_size+10) * sizeof *x);
|
||
if (!x)
|
||
return ASSUAN_Out_Of_Core;
|
||
ctx->cmdtbl = x;
|
||
ctx->cmdtbl_size += 50;
|
||
}
|
||
|
||
ctx->cmdtbl[ctx->cmdtbl_used].name = cmd_name;
|
||
ctx->cmdtbl[ctx->cmdtbl_used].cmd_id = cmd_id;
|
||
ctx->cmdtbl[ctx->cmdtbl_used].handler = handler;
|
||
ctx->cmdtbl_used++;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
assuan_register_bye_notify (ASSUAN_CONTEXT ctx, void (*fnc)(ASSUAN_CONTEXT))
|
||
{
|
||
if (!ctx)
|
||
return ASSUAN_Invalid_Value;
|
||
ctx->bye_notify_fnc = fnc;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
assuan_register_reset_notify (ASSUAN_CONTEXT ctx, void (*fnc)(ASSUAN_CONTEXT))
|
||
{
|
||
if (!ctx)
|
||
return ASSUAN_Invalid_Value;
|
||
ctx->reset_notify_fnc = fnc;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
assuan_register_cancel_notify (ASSUAN_CONTEXT ctx, void (*fnc)(ASSUAN_CONTEXT))
|
||
{
|
||
if (!ctx)
|
||
return ASSUAN_Invalid_Value;
|
||
ctx->cancel_notify_fnc = fnc;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
assuan_register_option_handler (ASSUAN_CONTEXT ctx,
|
||
int (*fnc)(ASSUAN_CONTEXT,
|
||
const char*, const char*))
|
||
{
|
||
if (!ctx)
|
||
return ASSUAN_Invalid_Value;
|
||
ctx->option_handler_fnc = fnc;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
assuan_register_input_notify (ASSUAN_CONTEXT ctx,
|
||
void (*fnc)(ASSUAN_CONTEXT, const char *))
|
||
{
|
||
if (!ctx)
|
||
return ASSUAN_Invalid_Value;
|
||
ctx->input_notify_fnc = fnc;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
assuan_register_output_notify (ASSUAN_CONTEXT ctx,
|
||
void (*fnc)(ASSUAN_CONTEXT, const char *))
|
||
{
|
||
if (!ctx)
|
||
return ASSUAN_Invalid_Value;
|
||
ctx->output_notify_fnc = fnc;
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* Helper to register the standards commands */
|
||
int
|
||
_assuan_register_std_commands (ASSUAN_CONTEXT ctx)
|
||
{
|
||
int i, rc;
|
||
|
||
for (i=0; std_cmd_table[i].name; i++)
|
||
{
|
||
if (std_cmd_table[i].always)
|
||
{
|
||
rc = assuan_register_command (ctx, std_cmd_table[i].cmd_id,
|
||
NULL, NULL);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Process the special data lines. The "D " has already been removed
|
||
from the line. As all handlers this function may modify the line. */
|
||
static int
|
||
handle_data_line (ASSUAN_CONTEXT ctx, char *line, int linelen)
|
||
{
|
||
return set_error (ctx, Not_Implemented, NULL);
|
||
}
|
||
|
||
/* like ascii_strcasecmp but assume that B is already uppercase */
|
||
static int
|
||
my_strcasecmp (const char *a, const char *b)
|
||
{
|
||
if (a == b)
|
||
return 0;
|
||
|
||
for (; *a && *b; a++, b++)
|
||
{
|
||
if (((*a >= 'a' && *a <= 'z')? (*a&~0x20):*a) != *b)
|
||
break;
|
||
}
|
||
return *a == *b? 0 : (((*a >= 'a' && *a <= 'z')? (*a&~0x20):*a) - *b);
|
||
}
|
||
|
||
/* Parse the line, break out the command, find it in the command
|
||
table, remove leading and white spaces from the arguments, all the
|
||
handler with the argument line and return the error */
|
||
static int
|
||
dispatch_command (ASSUAN_CONTEXT ctx, char *line, int linelen)
|
||
{
|
||
char *p;
|
||
const char *s;
|
||
int shift, i;
|
||
|
||
if (*line == 'D' && line[1] == ' ') /* divert to special handler */
|
||
return handle_data_line (ctx, line+2, linelen-2);
|
||
|
||
for (p=line; *p && *p != ' ' && *p != '\t'; p++)
|
||
;
|
||
if (p==line)
|
||
return set_error (ctx, Invalid_Command, "leading white-space");
|
||
if (*p)
|
||
{ /* Skip over leading WS after the keyword */
|
||
*p++ = 0;
|
||
while ( *p == ' ' || *p == '\t')
|
||
p++;
|
||
}
|
||
shift = p - line;
|
||
|
||
for (i=0; (s=ctx->cmdtbl[i].name); i++)
|
||
{
|
||
if (!strcmp (line, s))
|
||
break;
|
||
}
|
||
if (!s)
|
||
{ /* and try case insensitive */
|
||
for (i=0; (s=ctx->cmdtbl[i].name); i++)
|
||
{
|
||
if (!my_strcasecmp (line, s))
|
||
break;
|
||
}
|
||
}
|
||
if (!s)
|
||
return set_error (ctx, Unknown_Command, NULL);
|
||
line += shift;
|
||
linelen -= shift;
|
||
|
||
/* fprintf (stderr, "DBG-assuan: processing %s `%s'\n", s, line); */
|
||
return ctx->cmdtbl[i].handler (ctx, line);
|
||
}
|
||
|
||
|
||
|
||
|
||
static int
|
||
process_request (ASSUAN_CONTEXT ctx)
|
||
{
|
||
int rc;
|
||
|
||
if (ctx->in_inquire)
|
||
return ASSUAN_Nested_Commands;
|
||
|
||
rc = _assuan_read_line (ctx);
|
||
if (rc)
|
||
return rc;
|
||
if (*ctx->inbound.line == '#' || !ctx->inbound.linelen)
|
||
return 0; /* comment line - ignore */
|
||
|
||
ctx->outbound.data.error = 0;
|
||
ctx->outbound.data.linelen = 0;
|
||
/* dispatch command and return reply */
|
||
rc = dispatch_command (ctx, ctx->inbound.line, ctx->inbound.linelen);
|
||
/* check from data write errors */
|
||
if (ctx->outbound.data.fp)
|
||
{ /* Flush the data lines */
|
||
fclose (ctx->outbound.data.fp);
|
||
ctx->outbound.data.fp = NULL;
|
||
if (!rc && ctx->outbound.data.error)
|
||
rc = ctx->outbound.data.error;
|
||
}
|
||
else /* flush any data send w/o using the data fp */
|
||
{
|
||
assuan_send_data (ctx, NULL, 0);
|
||
if (!rc && ctx->outbound.data.error)
|
||
rc = ctx->outbound.data.error;
|
||
}
|
||
/* Error handling */
|
||
if (!rc)
|
||
{
|
||
rc = assuan_write_line (ctx, ctx->okay_line? ctx->okay_line : "OK");
|
||
}
|
||
else if (rc == -1)
|
||
{ /* No error checking because the peer may have already disconnect */
|
||
assuan_write_line (ctx, "OK closing connection");
|
||
ctx->finish_handler (ctx);
|
||
}
|
||
else
|
||
{
|
||
char errline[256];
|
||
|
||
if (rc < 100)
|
||
sprintf (errline, "ERR %d server fault (%.50s)",
|
||
ASSUAN_Server_Fault, assuan_strerror (rc));
|
||
else
|
||
{
|
||
const char *text = ctx->err_no == rc? ctx->err_str:NULL;
|
||
|
||
sprintf (errline, "ERR %d %.50s%s%.100s",
|
||
rc, assuan_strerror (rc), text? " - ":"", text?text:"");
|
||
}
|
||
rc = assuan_write_line (ctx, errline);
|
||
}
|
||
|
||
ctx->confidential = 0;
|
||
if (ctx->okay_line)
|
||
{
|
||
xfree (ctx->okay_line);
|
||
ctx->okay_line = NULL;
|
||
}
|
||
return rc;
|
||
}
|
||
|
||
/**
|
||
* assuan_process:
|
||
* @ctx: assuan context
|
||
*
|
||
* This fucntion is used to handle the assuan protocol after a
|
||
* connection has been established using assuan_accept(). This is the
|
||
* main protocol handler.
|
||
*
|
||
* Return value: 0 on success or an error code if the assuan operation
|
||
* failed. Note, that no error is returned for operational errors.
|
||
**/
|
||
int
|
||
assuan_process (ASSUAN_CONTEXT ctx)
|
||
{
|
||
int rc;
|
||
|
||
do {
|
||
rc = process_request (ctx);
|
||
} while (!rc);
|
||
|
||
if (rc == -1)
|
||
rc = 0;
|
||
|
||
return rc;
|
||
}
|
||
|
||
|
||
/**
|
||
* assuan_process_next:
|
||
* @ctx: Assuan context
|
||
*
|
||
* Same as assuan_process() but the user has to provide the outer
|
||
* loop. He should loop as long as the return code is zero and stop
|
||
* otherwise; -1 is regular end.
|
||
*
|
||
* See also: assuan_get_active_fds()
|
||
* Return value: -1 for end of server, 0 on success or an error code
|
||
**/
|
||
int
|
||
assuan_process_next (ASSUAN_CONTEXT ctx)
|
||
{
|
||
return process_request (ctx);
|
||
}
|
||
|
||
|
||
/**
|
||
* assuan_get_active_fds:
|
||
* @ctx: Assuan context
|
||
* @what: 0 for read fds, 1 for write fds
|
||
* @fdarray: Caller supplied array to store the FDs
|
||
* @fdarraysize: size of that array
|
||
*
|
||
* Return all active filedescriptors for the given context. This
|
||
* function can be used to select on the fds and call
|
||
* assuan_process_next() if there is an active one. The first fd in
|
||
* the array is the one used for the command connection.
|
||
*
|
||
* Note, that write FDs are not yet supported.
|
||
*
|
||
* Return value: number of FDs active and put into @fdarray or -1 on
|
||
* error which is most likely a too small fdarray.
|
||
**/
|
||
int
|
||
assuan_get_active_fds (ASSUAN_CONTEXT ctx, int what,
|
||
int *fdarray, int fdarraysize)
|
||
{
|
||
int n = 0;
|
||
|
||
if (!ctx || fdarraysize < 2 || what < 0 || what > 1)
|
||
return -1;
|
||
|
||
if (!what)
|
||
{
|
||
if (ctx->inbound.fd != -1)
|
||
fdarray[n++] = ctx->inbound.fd;
|
||
}
|
||
else
|
||
{
|
||
if (ctx->outbound.fd != -1)
|
||
fdarray[n++] = ctx->outbound.fd;
|
||
if (ctx->outbound.data.fp)
|
||
fdarray[n++] = fileno (ctx->outbound.data.fp);
|
||
}
|
||
|
||
return n;
|
||
}
|
||
|
||
/* Return a FP to be used for data output. The FILE pointer is valid
|
||
until the end of a handler. So a close is not needed. Assuan does
|
||
all the buffering needed to insert the status line as well as the
|
||
required line wappping and quoting for data lines.
|
||
|
||
We use GNU's custom streams here. There should be an alternative
|
||
implementaion for systems w/o a glibc, a simple implementation
|
||
could use a child process */
|
||
FILE *
|
||
assuan_get_data_fp (ASSUAN_CONTEXT ctx)
|
||
{
|
||
cookie_io_functions_t cookie_fnc;
|
||
|
||
if (ctx->outbound.data.fp)
|
||
return ctx->outbound.data.fp;
|
||
|
||
cookie_fnc.read = NULL;
|
||
cookie_fnc.write = _assuan_cookie_write_data;
|
||
cookie_fnc.seek = NULL;
|
||
cookie_fnc.close = _assuan_cookie_write_flush;
|
||
|
||
ctx->outbound.data.fp = fopencookie (ctx, "wb", cookie_fnc);
|
||
ctx->outbound.data.error = 0;
|
||
return ctx->outbound.data.fp;
|
||
}
|
||
|
||
|
||
/* Set the text used for the next OK reponse. This string is
|
||
automatically reset to NULL after the next command. */
|
||
AssuanError
|
||
assuan_set_okay_line (ASSUAN_CONTEXT ctx, const char *line)
|
||
{
|
||
if (!ctx)
|
||
return ASSUAN_Invalid_Value;
|
||
if (!line)
|
||
{
|
||
xfree (ctx->okay_line);
|
||
ctx->okay_line = NULL;
|
||
}
|
||
else
|
||
{
|
||
/* FIXME: we need to use gcry_is_secure() to test whether
|
||
we should allocate the entire line in secure memory */
|
||
char *buf = xtrymalloc (3+strlen(line)+1);
|
||
if (!buf)
|
||
return ASSUAN_Out_Of_Core;
|
||
strcpy (buf, "OK ");
|
||
strcpy (buf+3, line);
|
||
xfree (ctx->okay_line);
|
||
ctx->okay_line = buf;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
void
|
||
assuan_write_status (ASSUAN_CONTEXT ctx, const char *keyword, const char *text)
|
||
{
|
||
char buffer[256];
|
||
char *helpbuf;
|
||
size_t n;
|
||
|
||
if ( !ctx || !keyword)
|
||
return;
|
||
if (!text)
|
||
text = "";
|
||
|
||
n = 2 + strlen (keyword) + 1 + strlen (text) + 1;
|
||
if (n < sizeof (buffer))
|
||
{
|
||
strcpy (buffer, "S ");
|
||
strcat (buffer, keyword);
|
||
if (*text)
|
||
{
|
||
strcat (buffer, " ");
|
||
strcat (buffer, text);
|
||
}
|
||
assuan_write_line (ctx, buffer);
|
||
}
|
||
else if ( (helpbuf = xtrymalloc (n)) )
|
||
{
|
||
strcpy (helpbuf, "S ");
|
||
strcat (helpbuf, keyword);
|
||
if (*text)
|
||
{
|
||
strcat (helpbuf, " ");
|
||
strcat (helpbuf, text);
|
||
}
|
||
assuan_write_line (ctx, helpbuf);
|
||
xfree (helpbuf);
|
||
}
|
||
}
|