1: /*************************************************************************
2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
6: * $Id: cli.c,v 1.12 2022/12/05 22:23:38 misho Exp $
7: *
8: **************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004 - 2022
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47:
48:
49: /*
50: * cli_Cmd_Exit() - Builtin helper function for Exit from Cli
51: *
52: * @cli_buffer = CLI buffer
53: * @idx = Config level
54: * @args = Parsed arguments array
55: * return: RETCODE_EOF exit from Cli!
56: */
57: int
58: cli_Cmd_Exit(void * __restrict cli_buffer, int idx, char ** __restrict args)
59: {
60: cli_Printf(cli_buffer, "\n");
61: ((linebuffer_t*) cli_buffer)->line_kill = 42;
62: return RETCODE_EOF;
63: }
64:
65: /*
66: * cli_Cmd_Help() - Builtin helper function for Help screen
67: *
68: * @cli_buffer = CLI buffer
69: * @idx = Config level
70: * @args = Parsed arguments array
71: * return: RETCODE_ERR in error or RETCODE_OK
72: */
73: int
74: cli_Cmd_Help(void * __restrict cli_buffer, int idx, char ** __restrict args)
75: {
76: linebuffer_t *buf = cli_buffer;
77: struct tagCommand *cmd;
78:
79: if (!cli_buffer) {
80: cli_SetErr(EINVAL, "Invalid input parameters ...");
81: return RETCODE_ERR;
82: }
83:
84: cli_Printf(buf, "\n");
85: if (!args) {
86: SLIST_FOREACH(cmd, &buf->line_cmds, cmd_next) {
87: if (!(cmd->cmd_level & (1 << idx)))
88: continue;
89:
90: cli_Printf(buf, "%s\t\t%s\n", cmd->cmd_name, cmd->cmd_help);
91: }
92: } else {
93: if (!args[1])
94: cli_Printf(buf, "Help screen::\n");
95: else
96: if (!strncmp(args[1], "---", 3))
97: return RETCODE_OK;
98:
99: SLIST_FOREACH(cmd, &buf->line_cmds, cmd_next) {
100: if (!(cmd->cmd_level & (1 << idx)))
101: continue;
102: if (args[1] && (!(cmd->cmd_level & (1 << idx)) ||
103: strcmp(args[1], cmd->cmd_name)))
104: continue;
105:
106: cli_Printf(buf, "%s%s\t\t%s\n", args[1] ? "Syntax::\n\t" : "", cmd->cmd_name,
107: args[1] ? cmd->cmd_info: cmd->cmd_help);
108: }
109: }
110: cli_Printf(cli_buffer, "\r");
111:
112: return RETCODE_OK;
113: }
114:
115: /*
116: * cli_Cmd_Unsupported() - Builtin helper function for unsupported commands
117: *
118: * @cli_buffer = CLI buffer
119: * @idx = Config level
120: * @args = Parsed arguments array
121: * return: RETCODE_OK ok
122: */
123: int
124: cli_Cmd_Unsupported(void * __restrict cli_buffer, int idx, char ** __restrict args)
125: {
126: cli_Printf(cli_buffer, "Command %s not supported in this version ...\n", args[0]);
127: return RETCODE_OK;
128: }
129:
130: /*
131: * cli_Cmd_Config() - Builtin helper function for enter into config level from Cli
132: *
133: * @cli_buffer = CLI buffer
134: * @idx = Config level
135: * @args = Parsed arguments array
136: * return: RETCODE_ERR in error or RETCODE_OK
137: */
138: int
139: cli_Cmd_Config(void * __restrict cli_buffer, int idx, char ** __restrict args)
140: {
141: linebuffer_t *buf = cli_buffer;
142: char szPrompt[STRSIZ + 16] = {[0 ... STRSIZ + 15] = 0};
143:
144: if (idx == sizeof idx * 8 - 1)
145: return RETCODE_ERR;
146:
147: buf->line_level++;
148: snprintf(szPrompt, sizeof szPrompt, "%s{%d}> ", buf->line_porigin, buf->line_level);
149: cli_setPrompt(buf, szPrompt);
150: cli_Printf(buf, "Enter to config level %d\n", buf->line_level);
151: return RETCODE_OK;
152: }
153:
154: /*
155: * cli_Cmd_End() - Builtin helper function for end config level from Cli
156: *
157: * @cli_buffer = CLI buffer
158: * @idx = Config level
159: * @args = Parsed arguments array
160: * return: RETCODE_EOF in level 0 or RETCODE_OK
161: */
162: int
163: cli_Cmd_End(void * __restrict cli_buffer, int idx, char ** __restrict args)
164: {
165: linebuffer_t *buf = cli_buffer;
166: char szPrompt[STRSIZ + 16] = {[0 ... STRSIZ + 15] = 0};
167:
168: if (!idx)
169: return cli_Cmd_Exit(cli_buffer, idx, args);
170:
171: buf->line_level--;
172: snprintf(szPrompt, sizeof szPrompt, "%s{%d}> ", buf->line_porigin, buf->line_level);
173: cli_setPrompt(buf, szPrompt);
174: cli_Printf(buf, "Enter to config level %d\n", buf->line_level);
175: return RETCODE_OK;
176: }
177:
178: /*
179: * cli_Cmd_Top() - Builtin helper function for top level of Cli
180: *
181: * @cli_buffer = CLI buffer
182: * @idx = Config level
183: * @args = Parsed arguments array
184: * return: RETCODE_OK ok
185: */
186: int
187: cli_Cmd_Top(void * __restrict cli_buffer, int idx, char ** __restrict args)
188: {
189: linebuffer_t *buf = cli_buffer;
190: char szPrompt[STRSIZ + 16] = {[0 ... STRSIZ + 15] = 0};
191:
192: buf->line_level ^= buf->line_level;
193: snprintf(szPrompt, sizeof szPrompt, "%s{%d}> ", buf->line_porigin, buf->line_level);
194: cli_setPrompt(buf, szPrompt);
195: cli_Printf(buf, "Enter to top config level %d\n", buf->line_level);
196: return RETCODE_OK;
197: }
198:
199: /*
200: * cli_Cmd_WhereAmI() - Builtin helper function for query level of Cli
201: *
202: * @cli_buffer = CLI buffer
203: * @idx = Config level
204: * @args = Parsed arguments array
205: * return: RETCODE_OK ok
206: */
207: int
208: cli_Cmd_WhereAmI(void * __restrict cli_buffer, int idx, char ** __restrict args)
209: {
210: linebuffer_t *buf = cli_buffer;
211:
212: cli_Printf(buf, "Current config level is %d\n", buf->line_level);
213: return RETCODE_OK;
214: }
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