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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 | * Copyright (C) 1998 by Wes Peters <wes@softweyr.com> |
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| 3 | * Copyright (c) 1988, 1993 The Regents of the University of California. |
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| 4 | * All rights reserved by all copyright holders. |
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| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions are met: |
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| 8 | * |
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| 9 | * Redistributions of source code must retain the above copyright notice, this |
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| 10 | * list of conditions and the following disclaimer. |
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| 11 | * |
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| 12 | * Redistributions in binary form must reproduce the above copyright notice, |
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| 13 | * this list of conditions and the following disclaimer in the documentation |
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| 14 | * and/or other materials provided with the distribution. |
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| 15 | * |
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| 16 | * Neither the name of the original program's authors nor the names of its |
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| 17 | * contributors may be used to endorse or promote products derived from this |
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| 18 | * software without specific prior written permission. |
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| 19 | * |
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 30 | * POSSIBILITY OF SUCH DAMAGE. |
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| 31 | */ |
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| 32 | |||
| 33 | /* NOTES: |
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| 34 | * 1 - Various functions were adapted from FreeBSD (copyright holders noted above) |
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| 35 | * these functions are identified with comments. |
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| 36 | * |
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| 37 | * 2 - Some of these have since appeared in libc. They remain here for various |
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| 38 | * reasons, such as the eventual integration of garbage collection for things |
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| 39 | * that allocate memory and don't automatically free it. |
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| 40 | * |
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| 41 | * 3 - Things that expect a pointer to an allocated string do _no_ sanity checking |
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| 42 | * if developing on a simulator with no debugger, take care :) |
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| 43 | */ |
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| 44 | |||
| 45 | #include <stdio.h> |
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| 46 | #include <string.h> |
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| 47 | #include <stdarg.h> |
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| 48 | #include <stdlib.h> |
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| 3345 | post | 49 | #include <stdarg.h> |
| 3265 | post | 50 | |
| 51 | #include "config.h" |
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| 52 | #include "errors.h" |
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| 53 | #include "util.h" |
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| 54 | |||
| 3366 | post | 55 | extern volatile int cli_errno; |
| 56 | |||
| 3345 | post | 57 | /* some platforms do not have strdup, implement it here. |
| 58 | * Returns a pointer to an allocated string or NULL on failure */ |
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| 3265 | post | 59 | char * cli_strdup(const char *s1) |
| 60 | { |
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| 61 | size_t len = strlen(s1) + 1; |
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| 62 | void *ret = malloc(len); |
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| 63 | |||
| 3366 | post | 64 | if (ret == NULL) { |
| 65 | cli_errno = CL_ENOMEM; |
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| 3265 | post | 66 | return (char *) NULL; |
| 3366 | post | 67 | } |
| 3265 | post | 68 | |
| 3366 | post | 69 | cli_errno = CL_EOK; |
| 3265 | post | 70 | return (char *) memcpy(ret, s1, len); |
| 71 | } |
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| 72 | |||
| 73 | /* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
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| 74 | char * cli_strtok_r(char *s, const char *delim, char **last) |
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| 75 | { |
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| 76 | char *spanp, *tok; |
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| 77 | int c, sc; |
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| 78 | |||
| 3366 | post | 79 | if (s == NULL && (s = *last) == NULL) { |
| 80 | cli_errno = CL_EFAIL; |
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| 3265 | post | 81 | return (NULL); |
| 3366 | post | 82 | } |
| 3265 | post | 83 | |
| 84 | cont: |
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| 85 | c = *s++; |
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| 86 | for (spanp = (char *)delim; (sc = *spanp++) != 0;) { |
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| 87 | if (c == sc) |
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| 88 | goto cont; |
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| 89 | } |
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| 90 | |||
| 91 | if (c == 0) { /* no non-delimiter characters */ |
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| 92 | *last = NULL; |
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| 93 | return (NULL); |
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| 94 | } |
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| 3269 | post | 95 | |
| 3265 | post | 96 | tok = s - 1; |
| 97 | |||
| 98 | for (;;) { |
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| 99 | c = *s++; |
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| 100 | spanp = (char *)delim; |
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| 101 | do { |
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| 102 | if ((sc = *spanp++) == c) { |
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| 103 | if (c == 0) |
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| 104 | s = NULL; |
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| 105 | else |
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| 106 | s[-1] = '\0'; |
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| 107 | *last = s; |
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| 108 | return (tok); |
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| 109 | } |
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| 110 | } while (sc != 0); |
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| 111 | } |
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| 112 | } |
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| 113 | |||
| 114 | /* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
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| 115 | char * cli_strtok(char *s, const char *delim) |
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| 116 | { |
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| 117 | static char *last; |
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| 118 | |||
| 119 | return (cli_strtok_r(s, delim, &last)); |
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| 120 | } |
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| 3376 | post | 121 | |
| 122 | /* Count and return the # of elements in an array */ |
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| 123 | unsigned int cli_count_args(char **args) |
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| 124 | { |
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| 125 | unsigned int i; |
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| 126 | |||
| 127 | for (i=0; args[i] != NULL; i++); |
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| 128 | return i; |
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| 129 | } |
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| 130 | |||
| 3377 | post | 131 | /* (re)allocates memory to store the current working directory, gets |
| 132 | * and updates the current working directory, formats the prompt |
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| 133 | * string */ |
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| 134 | unsigned int cli_set_prompt(cliuser_t *usr) |
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| 135 | { |
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| 136 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX); |
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| 137 | if (NULL == usr->prompt) { |
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| 138 | cli_error(CL_ENOMEM, "Can not allocate prompt"); |
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| 139 | cli_errno = CL_ENOMEM; |
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| 140 | return 1; |
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| 141 | } |
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| 142 | memset(usr->prompt, 0, sizeof(usr->prompt)); |
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| 143 | |||
| 144 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX); |
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| 145 | if (NULL == usr->cwd) { |
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| 146 | cli_error(CL_ENOMEM, "Can not allocate cwd"); |
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| 147 | cli_errno = CL_ENOMEM; |
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| 148 | return 1; |
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| 149 | } |
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| 150 | memset(usr->cwd, 0, sizeof(usr->cwd)); |
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| 151 | |||
| 152 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1); |
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| 153 | |||
| 154 | if (NULL == usr->cwd) |
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| 155 | snprintf(usr->cwd, PATH_MAX, "(unknown)"); |
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| 156 | |||
| 3481 | post | 157 | asprintf(&usr->prompt, "%s # ", usr->cwd); |
| 3377 | post | 158 | |
| 159 | return 0; |
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| 160 | } |
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| 161 | |||
| 162 |