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1c0715b12a
Now that the CLI's print context is alone in the appctx, it's possible to refine the appctx's ctx layout so that the cli part matches exactly a regular svcctx, and as such move the CLI context into an svcctx like other applets. External code will still build and work because the struct cli perfectly maps onto the struct cli_print_ctx that's located into svc.storage. This is of course only to make a smooth transition during 2.6 and will disappear immediately after. A tiny change had to be applied to the opentracing addon which performs direct accesses to the CLI's err pointer in its own print function. The rest uses the standard cli_print_* which were the only ones that needed a small change. The whole "ctx.cli" struct could be tagged as deprecated so that any possibly existing external code that relies on it will get build warnings, and the comments in the struct are pretty clear about the way to fix it, and the lack of future of this old API.
96 lines
3.8 KiB
C
96 lines
3.8 KiB
C
/*
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* include/haproxy/cli-t.h
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* This file provides structures and types for CLI.
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*
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* Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but 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 library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_CLI_T_H
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#define _HAPROXY_CLI_T_H
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#include <haproxy/applet-t.h>
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/* Access level for a stats socket (appctx->cli_level) */
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#define ACCESS_LVL_NONE 0x0000
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#define ACCESS_LVL_USER 0x0001
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#define ACCESS_LVL_OPER 0x0002
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#define ACCESS_LVL_ADMIN 0x0003
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#define ACCESS_LVL_MASK 0x0003
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#define ACCESS_FD_LISTENERS 0x0004 /* expose listeners FDs on stats socket */
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#define ACCESS_MASTER 0x0008 /* works with the master (and every other processes) */
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#define ACCESS_MASTER_ONLY 0x0010 /* only works with the master */
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#define ACCESS_EXPERT 0x0020 /* access to dangerous commands reserved to experts */
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#define ACCESS_EXPERIMENTAL 0x0040
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#define ACCESS_MCLI_DEBUG 0x0080 /* allow the master CLI to use any command without the flag ACCESS_MASTER */
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/* flags for appctx->st1 */
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#define APPCTX_CLI_ST1_PROMPT (1 << 0)
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#define APPCTX_CLI_ST1_PAYLOAD (1 << 1)
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#define APPCTX_CLI_ST1_NOLF (1 << 2)
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#define CLI_PREFIX_KW_NB 5
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#define CLI_MAX_MATCHES 5
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#define CLI_MAX_HELP_ENTRIES 1024
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/* CLI states */
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enum {
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CLI_ST_INIT = 0, /* initial state, must leave to zero ! */
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CLI_ST_END, /* final state, let's close */
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CLI_ST_GETREQ, /* wait for a request */
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CLI_ST_OUTPUT, /* all states after this one are responses */
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CLI_ST_PROMPT, /* display the prompt (first output, same code) */
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CLI_ST_PRINT, /* display const message in cli->msg */
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CLI_ST_PRINT_ERR, /* display const error in cli->msg */
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CLI_ST_PRINT_DYN, /* display dynamic message in cli->err. After the display, free the pointer */
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CLI_ST_PRINT_FREE, /* display dynamic error in cli->err. After the display, free the pointer */
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CLI_ST_CALLBACK, /* custom callback pointer */
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};
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/* CLI severity output formats */
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enum {
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CLI_SEVERITY_UNDEFINED = 0, /* undefined severity format */
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CLI_SEVERITY_NONE, /* no severity information prepended */
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CLI_SEVERITY_NUMBER, /* prepend informational cli messages with a severity as number */
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CLI_SEVERITY_STRING, /* prepend informational cli messages with a severity as string */
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};
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/* CLI context for printing command responses. */
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struct cli_print_ctx {
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const char *msg; /* pointer to a persistent message to be returned in CLI_ST_PRINT state */
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char *err; /* pointer to a 'must free' message to be returned in CLI_ST_PRINT_FREE state */
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int severity; /* severity of the message to be returned according to (syslog) rfc5424 */
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};
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struct cli_kw {
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const char *str_kw[CLI_PREFIX_KW_NB]; /* keywords ended by NULL, limited to CLI_PREFIX_KW_NB
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separated keywords combination */
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const char *usage; /* usage message */
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int (*parse)(char **args, char *payload, struct appctx *appctx, void *private);
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int (*io_handler)(struct appctx *appctx);
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void (*io_release)(struct appctx *appctx);
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void *private;
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int level; /* this is the level needed to show the keyword usage and to use it */
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};
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struct cli_kw_list {
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struct list list;
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struct cli_kw kw[VAR_ARRAY];
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};
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#endif /* _HAPROXY_CLI_T_H */
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