WebSVN – HelenOS – Diff – /trunk/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 "config.h"
#include "util.h"
#include "scli.h"
#include "input.h"
#include "errors.h"
#include "exec.h"
 
extern volatile unsigned int cli_interactive;
 
/* More than a macro than anything */
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;
    }
 
    /* Check what kind of command argv[0] might be, TODO: move this to
     * a function */
    if ((i = (is_builtin(cmd[0]))) > -1) {
        if (builtin_is_restricted(i)) {
                rc = try_exec(cmd[0], cmd);
                if (rc)
                    cli_restricted(cmd[0]);
                goto finit;
        }
        rc = run_builtin(i, cmd, usr);
        goto finit;
    } 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 {
        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 */
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';
}
 
void get_input(cliuser_t *usr)
{
    char line[INPUT_MAX];
    size_t len = 0;
 
    printf("%s", usr->prompt);
    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 3346	Rev 3366
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		36
37	#include "config.h"	37	#include "config.h"
38	#include "util.h"	38	#include "util.h"
39	#include "scli.h"	39	#include "scli.h"
40	#include "input.h"	40	#include "input.h"
41	#include "errors.h"	41	#include "errors.h"
42	#include "exec.h"	42	#include "exec.h"
43		43
44	extern volatile unsigned int cli_interactive;	44	extern volatile unsigned int cli_interactive;
45		45
46	/* More than a macro than anything */	46	/* More than a macro than anything */
47	void cli_restricted(char *cmd)	47	void cli_restricted(char *cmd)
48	{	48	{
49	cli_verbose("%s is not available in %s mode\n", cmd,	49	printf("%s is not available in %s mode\n", cmd,
50	cli_interactive ? "interactive" : "non-interactive");	50	cli_interactive ? "interactive" : "non-interactive");
51		51
52	return;	52	return;
53	}	53	}
54		54
55	/* Tokenizes input from console, sees if the first word is a built-in, if so	55	/* Tokenizes input from console, sees if the first word is a built-in, if so
56	* invokes the built-in entry point (a[0]) passing all arguments in a[] to	56	* invokes the built-in entry point (a[0]) passing all arguments in a[] to
57	* the handler */	57	* the handler */
58	int tok_input(cliuser_t *usr)	58	int tok_input(cliuser_t *usr)
59	{	59	{
60	char *cmd[WORD_MAX];	60	char *cmd[WORD_MAX];
61	int n = 0, i = 0;	61	int n = 0, i = 0;
62	int rc = 0;	62	int rc = 0;
63	char *tmp;	63	char *tmp;
64		64
65	if (NULL == usr->line)	65	if (NULL == usr->line)
66	return CL_EFAIL;	66	return CL_EFAIL;
67		67
68	tmp = cli_strdup(usr->line);	68	tmp = cli_strdup(usr->line);
69		69
70	/* Break up what the user typed, space delimited */	70	/* Break up what the user typed, space delimited */
71		71
72	/* TODO: Protect things in quotes / ticks, expand wildcards */	72	/* TODO: Protect things in quotes / ticks, expand wildcards */
73	cmd[n] = cli_strtok(tmp, " ");	73	cmd[n] = cli_strtok(tmp, " ");
74	while (cmd[n] && n < WORD_MAX) {	74	while (cmd[n] && n < WORD_MAX) {
75	cmd[++n] = cli_strtok(NULL, " ");	75	cmd[++n] = cli_strtok(NULL, " ");
76	}	76	}
77		77
78	/* We have rubbish */	78	/* We have rubbish */
79	if (NULL == cmd[0]) {	79	if (NULL == cmd[0]) {
80	rc = CL_ENOENT;	80	rc = CL_ENOENT;
81	goto finit;	81	goto finit;
82	}	82	}
83		83
84	/* Check what kind of command argv[0] might be, TODO: move this to	84	/* Check what kind of command argv[0] might be, TODO: move this to
85	* a function */	85	* a function */
86	if ((i = (is_builtin(cmd[0]))) > -1) {	86	if ((i = (is_builtin(cmd[0]))) > -1) {
87	if (builtin_is_restricted(i)) {	87	if (builtin_is_restricted(i)) {
88	rc = try_exec(cmd[0], cmd);	88	rc = try_exec(cmd[0], cmd);
89	if (rc)	89	if (rc)
90	cli_restricted(cmd[0]);	90	cli_restricted(cmd[0]);
91	goto finit;	91	goto finit;
92	}	92	}
93	rc = run_builtin(i, cmd, usr);	93	rc = run_builtin(i, cmd, usr);
94	goto finit;	94	goto finit;
95	} else if ((i = (is_module(cmd[0]))) > -1) {	95	} else if ((i = (is_module(cmd[0]))) > -1) {
96	if (module_is_restricted(i)) {	96	if (module_is_restricted(i)) {
97	rc = try_exec(cmd[0], cmd);	97	rc = try_exec(cmd[0], cmd);
98	if (rc)	98	if (rc)
99	cli_restricted(cmd[0]);	99	cli_restricted(cmd[0]);
100	goto finit;	100	goto finit;
101	}	101	}
102	rc = run_module(i, cmd);	102	rc = run_module(i, cmd);
103	goto finit;	103	goto finit;
104	} else {	104	} else {
105	rc = try_exec(cmd[0], cmd);	105	rc = try_exec(cmd[0], cmd);
106	goto finit;	106	goto finit;
107	}	107	}
108		108
109	finit:	109	finit:
110	if (NULL != usr->line) {	110	if (NULL != usr->line) {
111	free(usr->line);	111	free(usr->line);
112	usr->line = (char *) NULL;	112	usr->line = (char *) NULL;
113	}	113	}
114	if (NULL != tmp)	114	if (NULL != tmp)
115	free(tmp);	115	free(tmp);
116		116
117	return rc;	117	return rc;
118	}	118	}
119		119
120	/* Borrowed from Jiri Svoboda's 'cli' uspace app */	120	/* Borrowed from Jiri Svoboda's 'cli' uspace app */
121	void read_line(char *buffer, int n)	121	void read_line(char *buffer, int n)
122	{	122	{
123	char c;	123	char c;
124	int chars;	124	int chars;
125		125
126	chars = 0;	126	chars = 0;
127	while (chars < n - 1) {	127	while (chars < n - 1) {
128	c = getchar();	128	c = getchar();
129	if (c < 0)	129	if (c < 0)
130	return;	130	return;
131	if (c == '\n')	131	if (c == '\n')
132	break;	132	break;
133	if (c == '\b') {	133	if (c == '\b') {
134	if (chars > 0) {	134	if (chars > 0) {
135	putchar('\b');	135	putchar('\b');
136	--chars;	136	--chars;
137	}	137	}
138	continue;	138	continue;
139	}	139	}
140	putchar(c);	140	putchar(c);
141	buffer[chars++] = c;	141	buffer[chars++] = c;
142	}	142	}
143	putchar('\n');	143	putchar('\n');
144	buffer[chars] = '\0';	144	buffer[chars] = '\0';
145	}	145	}
146		146
147	void get_input(cliuser_t *usr)	147	void get_input(cliuser_t *usr)
148	{	148	{
149	char line[INPUT_MAX];	149	char line[INPUT_MAX];
150	size_t len = 0;	150	size_t len = 0;
151		151
152	printf("%s", usr->prompt);	152	printf("%s", usr->prompt);
153	read_line(line, INPUT_MAX);	153	read_line(line, INPUT_MAX);
154	len = strlen(line);	154	len = strlen(line);
155	/* Make sure we don't have rubbish or a C/R happy user */	155	/* Make sure we don't have rubbish or a C/R happy user */
156	if (len == 0 \|\| line[0] == '\n')	156	if (len == 0 \|\| line[0] == '\n')
157	return;	157	return;
158	usr->line = cli_strdup(line);	158	usr->line = cli_strdup(line);
159		159
160	return;	160	return;
161	}	161	}
162		162
163		163

Subversion Repositories HelenOS

(root)/trunk/uspace/app/bdsh/input.c – Rev 3346 → 3366