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| Rev | Author | Line No. | Line |
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| 3265 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
| 2 | * All rights reserved. |
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| 3 | * Copyright (c) 2008, Jiri Svoboda - All Rights Reserved |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions are met: |
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| 7 | * |
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| 8 | * Redistributions of source code must retain the above copyright notice, this |
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| 9 | * list of conditions and the following disclaimer. |
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| 10 | * |
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| 11 | * Redistributions in binary form must reproduce the above copyright notice, |
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| 12 | * this list of conditions and the following disclaimer in the documentation |
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| 13 | * and/or other materials provided with the distribution. |
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| 14 | * |
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| 15 | * Neither the name of the original program's authors nor the names of its |
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| 16 | * contributors may be used to endorse or promote products derived from this |
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| 17 | * software without specific prior written permission. |
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| 18 | * |
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 20 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 23 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 29 | * POSSIBILITY OF SUCH DAMAGE. |
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| 30 | */ |
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| 31 | |||
| 32 | #include <stdio.h> |
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| 33 | #include <stdlib.h> |
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| 34 | #include <string.h> |
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| 35 | |||
| 36 | #ifdef HELENOS |
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| 37 | #include <io/stream.h> |
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| 38 | #endif |
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| 39 | |||
| 40 | #include "config.h" |
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| 41 | #include "util.h" |
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| 42 | #include "scli.h" |
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| 43 | #include "input.h" |
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| 44 | #include "errors.h" |
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| 45 | #include "exec.h" |
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| 46 | |||
| 47 | extern volatile unsigned int cli_interactive; |
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| 48 | |||
| 49 | /* More than a macro than anything */ |
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| 50 | void cli_restricted(char *cmd) |
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| 51 | { |
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| 52 | cli_verbose("%s is not available in %s mode\n", cmd, |
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| 53 | cli_interactive ? "interactive" : "non-interactive"); |
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| 54 | |||
| 55 | return; |
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| 56 | } |
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| 57 | |||
| 58 | /* Tokenizes input from console, sees if the first word is a built-in, if so |
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| 59 | * invokes the built-in entry point (a[0]) passing all arguments in a[] to |
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| 60 | * the handler */ |
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| 61 | int tok_input(cliuser_t *usr) |
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| 62 | { |
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| 63 | char *cmd[WORD_MAX]; |
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| 64 | int n = 0, i = 0; |
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| 65 | int rc = 0; |
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| 3268 | post | 66 | char *tmp = (char *) NULL; |
| 3265 | post | 67 | |
| 68 | if (NULL == usr->line) { |
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| 69 | rc = CL_EFAIL; |
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| 70 | goto finit; |
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| 71 | } |
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| 72 | |||
| 3268 | post | 73 | tmp = cli_strdup(usr->line); |
| 74 | |||
| 3265 | post | 75 | /* Break up what the user typed, space delimited */ |
| 76 | cmd[n] = cli_strtok(tmp, " "); |
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| 77 | while (cmd[n] && n < WORD_MAX) { |
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| 78 | cmd[++n] = cli_strtok(NULL, " "); |
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| 79 | } |
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| 80 | |||
| 81 | /* We have rubbish */ |
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| 82 | if (NULL == cmd[0]) { |
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| 83 | rc = CL_ENOENT; |
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| 84 | goto finit; |
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| 85 | } |
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| 86 | |||
| 87 | /* Check what kind of command argv[0] might be */ |
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| 88 | if ((i = (is_builtin(cmd[0]))) > -1) { |
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| 89 | /* Its a builtin */ |
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| 90 | if (builtin_is_restricted(i)) { |
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| 91 | /* Try an external command matching argv[0] */ |
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| 92 | rc = try_exec(cmd[0], cmd); |
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| 93 | if (rc) |
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| 94 | cli_restricted(cmd[0]); |
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| 95 | goto finit; |
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| 96 | } |
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| 97 | rc = run_builtin(i, cmd, usr); |
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| 98 | goto finit; |
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| 99 | } else if ((i = (is_module(cmd[0]))) > -1) { |
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| 100 | /* Its a module, it can't modify cliuser_t */ |
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| 101 | if (module_is_restricted(i)) { |
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| 102 | rc = try_exec(cmd[0], cmd); |
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| 103 | if (rc) |
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| 104 | cli_restricted(cmd[0]); |
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| 105 | goto finit; |
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| 106 | } |
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| 107 | rc = run_module(i, cmd); |
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| 108 | goto finit; |
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| 109 | } else { |
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| 110 | /* See what try_exec() thinks of it */ |
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| 111 | rc = try_exec(cmd[0], cmd); |
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| 112 | goto finit; |
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| 113 | } |
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| 114 | |||
| 115 | finit: |
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| 116 | if (NULL != usr->line) { |
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| 117 | free(usr->line); |
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| 118 | usr->line = (char *) NULL; |
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| 119 | } |
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| 3268 | post | 120 | if (NULL != tmp) |
| 121 | free(tmp); |
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| 122 | |||
| 3265 | post | 123 | return rc; |
| 124 | } |
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| 125 | |||
| 126 | #ifdef HELENOS |
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| 127 | /* Borrowed from Jiri Svoboda's 'cli' uspace app */ |
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| 128 | void read_line(char *buffer, int n) |
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| 129 | { |
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| 130 | char c; |
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| 131 | int chars; |
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| 132 | |||
| 133 | chars = 0; |
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| 134 | while (chars < n - 1) { |
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| 135 | c = getchar(); |
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| 136 | if (c < 0) |
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| 137 | return; |
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| 138 | if (c == '\n') |
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| 139 | break; |
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| 140 | if (c == '\b') { |
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| 141 | if (chars > 0) { |
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| 142 | putchar('\b'); |
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| 143 | --chars; |
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| 144 | } |
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| 145 | continue; |
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| 146 | } |
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| 147 | putchar(c); |
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| 148 | buffer[chars++] = c; |
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| 149 | } |
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| 150 | putchar('\n'); |
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| 151 | buffer[chars] = '\0'; |
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| 152 | } |
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| 153 | #endif |
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| 154 | |||
| 155 | /* This is soupy, fix me */ |
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| 156 | void get_input(cliuser_t *usr) |
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| 157 | { |
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| 158 | char line[INPUT_MAX]; |
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| 159 | size_t len = 0; |
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| 160 | |||
| 161 | printf("%s", usr->prompt); |
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| 162 | #ifdef HELENOS |
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| 163 | read_line(line, INPUT_MAX); |
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| 164 | #else |
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| 165 | fgets(line, INPUT_MAX, stdin); |
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| 166 | #endif |
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| 167 | len = strlen(line); |
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| 168 | /* Make sure we don't have rubbish or a C/R happy user */ |
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| 169 | if (len == 0) |
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| 170 | return; |
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| 171 | if (len == 1 && line[len-1] == '\n') |
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| 172 | return; |
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| 173 | #ifndef HELENOS |
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| 174 | /* Null terminate line */ |
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| 175 | if (len > 0 && line[len-1] == '\n') |
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| 176 | line[len-1] = '\0'; |
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| 177 | #endif |
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| 178 | usr->line = cli_strdup(line); |
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| 179 | return; |
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| 180 | } |
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| 181 |