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- proftpd/src/help.c
- /*
- * ProFTPD - FTP server daemon
- * Copyright (c) 2004-2009 The ProFTPD Project team
- *
- * This program 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.
- *
- * This program 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.
- *
- * As a special exemption, The ProFTPD Project team and other respective
- * copyright holders give permission to link this program with OpenSSL, and
- * distribute the resulting executable, without including the source code for
- * OpenSSL in the source distribution.
- */
- /* HELP management code
- * $Id: help.c,v 1.5 2009/06/30 23:31:18 castaglia Exp $
- */
- #include "conf.h"
- struct help_rec {
- const char *cmd;
- const char *syntax;
- int impl;
- };
- static pool *help_pool = NULL;
- static array_header *help_list = NULL;
- void pr_help_add(const char *cmd, const char *syntax, int impl) {
- struct help_rec *help;
- if (!cmd || !syntax)
- return;
- /* If no list has been allocated, create one. */
- if (!help_pool) {
- help_pool = make_sub_pool(permanent_pool);
- pr_pool_tag(help_pool, "Help Pool");
- help_list = make_array(help_pool, 0, sizeof(struct help_rec));
- }
- /* Make sure that the command being added isn't already in the list.
- * However, if it _is_ already in the list, but it's marked as not
- * implemented, _and_ the given impl flag is TRUE, then handle it
- * accordingly.
- */
- if (help_list->nelts > 0) {
- register unsigned int i = 0;
- struct help_rec *helps = help_list->elts;
- for (i = 0; i < help_list->nelts; i++)
- if (strcmp(helps[i].cmd, cmd) == 0) {
- if (helps[i].impl == FALSE &&
- impl == TRUE) {
- helps[i].impl = impl;
- }
- return;
- }
- }
- help = push_array(help_list);
- help->cmd = pstrdup(help_pool, cmd);
- help->syntax = pstrdup(help_pool, syntax);
- help->impl = impl;
- }
- int pr_help_add_response(cmd_rec *cmd, const char *target) {
- if (help_list) {
- register unsigned int i;
- struct help_rec *helps = help_list->elts;
- char *outa[8], *outstr;
- char buf[9] = {'\0'};
- int col = 0;
- if (!target) {
- pr_response_add(R_214,
- _("The following commands are recognized (* =>'s unimplemented):"));
- memset(outa, '\0', sizeof(outa));
- for (i = 0; i < help_list->nelts; i++) {
- outstr = "";
- if (helps[i].impl)
- outa[col++] = (char *) helps[i].cmd;
- else
- outa[col++] = pstrcat(cmd->tmp_pool, helps[i].cmd, "*", NULL);
- /* 8 rows */
- if ((i + 1) % 8 == 0 ||
- helps[i+1].cmd == NULL) {
- register unsigned int j;
- for (j = 0; j < 8; j++) {
- if (outa[j]) {
- snprintf(buf, sizeof(buf), "%-8s", outa[j]);
- buf[sizeof(buf)-1] = '\0';
- outstr = pstrcat(cmd->tmp_pool, outstr, buf, NULL);
- } else
- break;
- }
- if (*outstr)
- pr_response_add(R_DUP, "%s", outstr);
- memset(outa, '\0', sizeof(outa));
- col = 0;
- outstr = "";
- }
- }
- pr_response_add(R_DUP, _("Direct comments to %s"),
- cmd->server->ServerAdmin ? cmd->server->ServerAdmin : "ftp-admin");
- } else {
- /* List the syntax for the given target command. */
- for (i = 0; i < help_list->nelts; i++) {
- if (strcasecmp(helps[i].cmd, target) == 0) {
- pr_response_add(R_214, "Syntax: %s %s", helps[i].cmd,
- helps[i].syntax);
- return 0;
- }
- }
- }
- errno = ENOENT;
- return -1;
- }
- errno = ENOENT;
- return -1;
- }
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