WebSVN – HelenOS – Diff – /branches/dynload/uspace/app/bdsh/input.c


/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
 * All rights reserved.
 * Copyright (c) 2008, Jiri Svoboda - All Rights Reserved
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the original program's authors nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <io/stream.h>
#include <console.h>
 
#include "config.h"
#include "util.h"
#include "scli.h"
#include "input.h"
#include "errors.h"
#include "exec.h"
 
extern volatile unsigned int cli_interactive;
 
/* Not exposed in input.h */
static void cli_restricted(char *);
static void read_line(char *, int);
 
/* More than a macro than anything */
static void cli_restricted(char *cmd)
{
    printf("%s is not available in %s mode\n", cmd,
        cli_interactive ? "interactive" : "non-interactive");
 
    return;
}
 
/* Tokenizes input from console, sees if the first word is a built-in, if so
 * invokes the built-in entry point (a[0]) passing all arguments in a[] to
 * the handler */
int tok_input(cliuser_t *usr)
{
    char *cmd[WORD_MAX];
    int n = 0, i = 0;
    int rc = 0;
    char *tmp;
 
    if (NULL == usr->line)
        return CL_EFAIL;
 
    tmp = cli_strdup(usr->line);
 
    /* Break up what the user typed, space delimited */
 
    /* TODO: Protect things in quotes / ticks, expand wildcards */
    cmd[n] = cli_strtok(tmp, " ");
    while (cmd[n] && n < WORD_MAX) {
        cmd[++n] = cli_strtok(NULL, " ");
    }
 
    /* We have rubbish */
    if (NULL == cmd[0]) {
        rc = CL_ENOENT;
        goto finit;
    }
 
    /* Its a builtin command */
    if ((i = (is_builtin(cmd[0]))) > -1) {
        /* Its not available in this mode, see what try_exec() thinks */
        if (builtin_is_restricted(i)) {
                rc = try_exec(cmd[0], cmd);
                if (rc)
                    /* No external matching it could be found, tell the
                     * user that the command does exist, but is not
                     * available in this mode. */
                    cli_restricted(cmd[0]);
                goto finit;
        }
        /* Its a builtin, its available, run it */
        rc = run_builtin(i, cmd, usr);
        goto finit;
    /* We repeat the same dance for modules */
    } else if ((i = (is_module(cmd[0]))) > -1) {
        if (module_is_restricted(i)) {
            rc = try_exec(cmd[0], cmd);
            if (rc)
                cli_restricted(cmd[0]);
            goto finit;
        }
        rc = run_module(i, cmd);
        goto finit;
    } else {
        /* Its not a module or builtin, restricted or otherwise.
         * See what try_exec() thinks of it and just pass its return
         * value back to the caller */
        rc = try_exec(cmd[0], cmd);
        goto finit;
    }
 
finit:
    if (NULL != usr->line) {
        free(usr->line);
        usr->line = (char *) NULL;
    }
    if (NULL != tmp)
        free(tmp);
 
    return rc;
}
 
/* Borrowed from Jiri Svoboda's 'cli' uspace app */
static void read_line(char *buffer, int n)
{
    char c;
    int chars;
 
    chars = 0;
    while (chars < n - 1) {
        c = getchar();
        if (c < 0)
            return;
        if (c == '\n')
            break;
        if (c == '\b') {
            if (chars > 0) {
                putchar('\b');
                --chars;
            }
            continue;
        }
        putchar(c);
        buffer[chars++] = c;
    }
    putchar('\n');
    buffer[chars] = '\0';
}
 
/* TODO:
 * Implement something like editline() / readline(), if even
 * just for command history and making arrows work. */
void get_input(cliuser_t *usr)
{
    char line[INPUT_MAX];
    size_t len = 0;
 
    console_set_style(STYLE_EMPHASIS);
    printf("%s", usr->prompt);
    console_set_style(STYLE_NORMAL);
 
    read_line(line, INPUT_MAX);
    len = strlen(line);
    /* Make sure we don't have rubbish or a C/R happy user */
    if (len == 0 || line[0] == '\n')
        return;
    usr->line = cli_strdup(line);
 
    return;
}
 
 

Rev 3403	Rev 4338
1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>	1	/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
2	* All rights reserved.	2	* All rights reserved.
3	* Copyright (c) 2008, Jiri Svoboda - All Rights Reserved	3	* Copyright (c) 2008, Jiri Svoboda - All Rights Reserved
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are met:	6	* modification, are permitted provided that the following conditions are met:
7	*	7	*
8	* Redistributions of source code must retain the above copyright notice, this	8	* Redistributions of source code must retain the above copyright notice, this
9	* list of conditions and the following disclaimer.	9	* list of conditions and the following disclaimer.
10	*	10	*
11	* Redistributions in binary form must reproduce the above copyright notice,	11	* Redistributions in binary form must reproduce the above copyright notice,
12	* this list of conditions and the following disclaimer in the documentation	12	* this list of conditions and the following disclaimer in the documentation
13	* and/or other materials provided with the distribution.	13	* and/or other materials provided with the distribution.
14	*	14	*
15	* Neither the name of the original program's authors nor the names of its	15	* Neither the name of the original program's authors nor the names of its
16	* contributors may be used to endorse or promote products derived from this	16	* contributors may be used to endorse or promote products derived from this
17	* software without specific prior written permission.	17	* software without specific prior written permission.
18	*	18	*
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"	19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE	20	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR	23	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF	24	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS	25	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN	26	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)	27	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE	28	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29	* POSSIBILITY OF SUCH DAMAGE.	29	* POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31		31
32	#include <stdio.h>	32	#include <stdio.h>
33	#include <stdlib.h>	33	#include <stdlib.h>
34	#include <string.h>	34	#include <string.h>
35	#include <io/stream.h>	35	#include <io/stream.h>
-		36	#include <console.h>
36		37
37	#include "config.h"	38	#include "config.h"
38	#include "util.h"	39	#include "util.h"
39	#include "scli.h"	40	#include "scli.h"
40	#include "input.h"	41	#include "input.h"
41	#include "errors.h"	42	#include "errors.h"
42	#include "exec.h"	43	#include "exec.h"
43		44
44	extern volatile unsigned int cli_interactive;	45	extern volatile unsigned int cli_interactive;
45		46
46	/* Not exposed in input.h */	47	/* Not exposed in input.h */
47	static void cli_restricted(char *);	48	static void cli_restricted(char *);
48	static void read_line(char *, int);	49	static void read_line(char *, int);
49		50
50	/* More than a macro than anything */	51	/* More than a macro than anything */
51	static void cli_restricted(char *cmd)	52	static void cli_restricted(char *cmd)
52	{	53	{
53	printf("%s is not available in %s mode\n", cmd,	54	printf("%s is not available in %s mode\n", cmd,
54	cli_interactive ? "interactive" : "non-interactive");	55	cli_interactive ? "interactive" : "non-interactive");
55		56
56	return;	57	return;
57	}	58	}
58		59
59	/* Tokenizes input from console, sees if the first word is a built-in, if so	60	/* Tokenizes input from console, sees if the first word is a built-in, if so
60	* invokes the built-in entry point (a[0]) passing all arguments in a[] to	61	* invokes the built-in entry point (a[0]) passing all arguments in a[] to
61	* the handler */	62	* the handler */
62	int tok_input(cliuser_t *usr)	63	int tok_input(cliuser_t *usr)
63	{	64	{
64	char *cmd[WORD_MAX];	65	char *cmd[WORD_MAX];
65	int n = 0, i = 0;	66	int n = 0, i = 0;
66	int rc = 0;	67	int rc = 0;
67	char *tmp;	68	char *tmp;
68		69
69	if (NULL == usr->line)	70	if (NULL == usr->line)
70	return CL_EFAIL;	71	return CL_EFAIL;
71		72
72	tmp = cli_strdup(usr->line);	73	tmp = cli_strdup(usr->line);
73		74
74	/* Break up what the user typed, space delimited */	75	/* Break up what the user typed, space delimited */
75		76
76	/* TODO: Protect things in quotes / ticks, expand wildcards */	77	/* TODO: Protect things in quotes / ticks, expand wildcards */
77	cmd[n] = cli_strtok(tmp, " ");	78	cmd[n] = cli_strtok(tmp, " ");
78	while (cmd[n] && n < WORD_MAX) {	79	while (cmd[n] && n < WORD_MAX) {
79	cmd[++n] = cli_strtok(NULL, " ");	80	cmd[++n] = cli_strtok(NULL, " ");
80	}	81	}
81		82
82	/* We have rubbish */	83	/* We have rubbish */
83	if (NULL == cmd[0]) {	84	if (NULL == cmd[0]) {
84	rc = CL_ENOENT;	85	rc = CL_ENOENT;
85	goto finit;	86	goto finit;
86	}	87	}
87		88
88	/* Its a builtin command */	89	/* Its a builtin command */
89	if ((i = (is_builtin(cmd[0]))) > -1) {	90	if ((i = (is_builtin(cmd[0]))) > -1) {
90	/* Its not available in this mode, see what try_exec() thinks */	91	/* Its not available in this mode, see what try_exec() thinks */
91	if (builtin_is_restricted(i)) {	92	if (builtin_is_restricted(i)) {
92	rc = try_exec(cmd[0], cmd);	93	rc = try_exec(cmd[0], cmd);
93	if (rc)	94	if (rc)
94	/* No external matching it could be found, tell the	95	/* No external matching it could be found, tell the
95	* user that the command does exist, but is not	96	* user that the command does exist, but is not
96	* available in this mode. */	97	* available in this mode. */
97	cli_restricted(cmd[0]);	98	cli_restricted(cmd[0]);
98	goto finit;	99	goto finit;
99	}	100	}
100	/* Its a builtin, its available, run it */	101	/* Its a builtin, its available, run it */
101	rc = run_builtin(i, cmd, usr);	102	rc = run_builtin(i, cmd, usr);
102	goto finit;	103	goto finit;
103	/* We repeat the same dance for modules */	104	/* We repeat the same dance for modules */
104	} else if ((i = (is_module(cmd[0]))) > -1) {	105	} else if ((i = (is_module(cmd[0]))) > -1) {
105	if (module_is_restricted(i)) {	106	if (module_is_restricted(i)) {
106	rc = try_exec(cmd[0], cmd);	107	rc = try_exec(cmd[0], cmd);
107	if (rc)	108	if (rc)
108	cli_restricted(cmd[0]);	109	cli_restricted(cmd[0]);
109	goto finit;	110	goto finit;
110	}	111	}
111	rc = run_module(i, cmd);	112	rc = run_module(i, cmd);
112	goto finit;	113	goto finit;
113	} else {	114	} else {
114	/* Its not a module or builtin, restricted or otherwise.	115	/* Its not a module or builtin, restricted or otherwise.
115	* See what try_exec() thinks of it and just pass its return	116	* See what try_exec() thinks of it and just pass its return
116	* value back to the caller */	117	* value back to the caller */
117	rc = try_exec(cmd[0], cmd);	118	rc = try_exec(cmd[0], cmd);
118	goto finit;	119	goto finit;
119	}	120	}
120		121
121	finit:	122	finit:
122	if (NULL != usr->line) {	123	if (NULL != usr->line) {
123	free(usr->line);	124	free(usr->line);
124	usr->line = (char *) NULL;	125	usr->line = (char *) NULL;
125	}	126	}
126	if (NULL != tmp)	127	if (NULL != tmp)
127	free(tmp);	128	free(tmp);
128		129
129	return rc;	130	return rc;
130	}	131	}
131		132
132	/* Borrowed from Jiri Svoboda's 'cli' uspace app */	133	/* Borrowed from Jiri Svoboda's 'cli' uspace app */
133	static void read_line(char *buffer, int n)	134	static void read_line(char *buffer, int n)
134	{	135	{
135	char c;	136	char c;
136	int chars;	137	int chars;
137		138
138	chars = 0;	139	chars = 0;
139	while (chars < n - 1) {	140	while (chars < n - 1) {
140	c = getchar();	141	c = getchar();
141	if (c < 0)	142	if (c < 0)
142	return;	143	return;
143	if (c == '\n')	144	if (c == '\n')
144	break;	145	break;
145	if (c == '\b') {	146	if (c == '\b') {
146	if (chars > 0) {	147	if (chars > 0) {
147	putchar('\b');	148	putchar('\b');
148	--chars;	149	--chars;
149	}	150	}
150	continue;	151	continue;
151	}	152	}
152	putchar(c);	153	putchar(c);
153	buffer[chars++] = c;	154	buffer[chars++] = c;
154	}	155	}
155	putchar('\n');	156	putchar('\n');
156	buffer[chars] = '\0';	157	buffer[chars] = '\0';
157	}	158	}
158		159
159	/* TODO:	160	/* TODO:
160	* Implement something like editline() / readline(), if even	161	* Implement something like editline() / readline(), if even
161	* just for command history and making arrows work. */	162	* just for command history and making arrows work. */
162	void get_input(cliuser_t *usr)	163	void get_input(cliuser_t *usr)
163	{	164	{
164	char line[INPUT_MAX];	165	char line[INPUT_MAX];
165	size_t len = 0;	166	size_t len = 0;
166		167
-		168	console_set_style(STYLE_EMPHASIS);
167	printf("%s", usr->prompt);	169	printf("%s", usr->prompt);
-		170	console_set_style(STYLE_NORMAL);
-		171
168	read_line(line, INPUT_MAX);	172	read_line(line, INPUT_MAX);
169	len = strlen(line);	173	len = strlen(line);
170	/* Make sure we don't have rubbish or a C/R happy user */	174	/* Make sure we don't have rubbish or a C/R happy user */
171	if (len == 0 \|\| line[0] == '\n')	175	if (len == 0 \|\| line[0] == '\n')
172	return;	176	return;
173	usr->line = cli_strdup(line);	177	usr->line = cli_strdup(line);
174		178
175	return;	179	return;
176	}	180	}
177		181
178		182

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/app/bdsh/input.c – Rev 3403 → 4338