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1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> - All rights reserved |
2 | * Copyright (C) 1998 by Wes Peters <wes@softweyr.com> |
- | |
3 | * Copyright (c) 1988, 1993 The Regents of the University of California. |
- | |
4 | * All rights reserved by all copyright holders. |
- | |
5 | * |
2 | * |
6 | * Redistribution and use in source and binary forms, with or without |
3 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions are met: |
4 | * modification, are permitted provided that the following conditions are met: |
8 | * |
5 | * |
9 | * Redistributions of source code must retain the above copyright notice, this |
6 | * Redistributions of source code must retain the above copyright notice, this |
10 | * list of conditions and the following disclaimer. |
7 | * list of conditions and the following disclaimer. |
11 | * |
8 | * |
12 | * Redistributions in binary form must reproduce the above copyright notice, |
9 | * Redistributions in binary form must reproduce the above copyright notice, |
13 | * this list of conditions and the following disclaimer in the documentation |
10 | * this list of conditions and the following disclaimer in the documentation |
14 | * and/or other materials provided with the distribution. |
11 | * and/or other materials provided with the distribution. |
15 | * |
12 | * |
16 | * Neither the name of the original program's authors nor the names of its |
13 | * Neither the name of the original program's authors nor the names of its |
17 | * contributors may be used to endorse or promote products derived from this |
14 | * contributors may be used to endorse or promote products derived from this |
18 | * software without specific prior written permission. |
15 | * software without specific prior written permission. |
19 | * |
16 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
21 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
22 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
23 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
24 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
25 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
26 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
30 | * POSSIBILITY OF SUCH DAMAGE. |
27 | * POSSIBILITY OF SUCH DAMAGE. |
31 | */ |
28 | */ |
32 | 29 | ||
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 | * |
- | |
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 :) |
- | |
43 | */ |
- | |
44 | - | ||
45 | #include <stdio.h> |
30 | #include <stdio.h> |
46 | #include <string.h> |
31 | #include <string.h> |
47 | #include <stdarg.h> |
32 | #include <stdarg.h> |
48 | #include <stdlib.h> |
33 | #include <stdlib.h> |
49 | #include <stdarg.h> |
34 | #include <stdarg.h> |
50 | 35 | ||
51 | #include "config.h" |
36 | #include "config.h" |
52 | #include "errors.h" |
37 | #include "errors.h" |
53 | #include "util.h" |
38 | #include "util.h" |
54 | 39 | ||
55 | extern volatile int cli_errno; |
40 | extern volatile int cli_errno; |
56 | 41 | ||
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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59 | char * cli_strdup(const char *s1) |
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60 | { |
- | |
61 | size_t len = strlen(s1) + 1; |
- | |
62 | void *ret = malloc(len); |
- | |
63 | - | ||
64 | if (ret == NULL) { |
- | |
65 | cli_errno = CL_ENOMEM; |
- | |
66 | return (char *) NULL; |
- | |
67 | } |
- | |
68 | - | ||
69 | cli_errno = CL_EOK; |
- | |
70 | return (char *) memcpy(ret, s1, len); |
- | |
71 | } |
- | |
72 | - | ||
73 | /* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
- | |
74 | char * cli_strtok_r(char *s, const char *delim, char **last) |
- | |
75 | { |
- | |
76 | char *spanp, *tok; |
- | |
77 | int c, sc; |
- | |
78 | - | ||
79 | if (s == NULL && (s = *last) == NULL) { |
- | |
80 | cli_errno = CL_EFAIL; |
- | |
81 | return (NULL); |
- | |
82 | } |
- | |
83 | - | ||
84 | cont: |
- | |
85 | c = *s++; |
- | |
86 | for (spanp = (char *)delim; (sc = *spanp++) != 0;) { |
- | |
87 | if (c == sc) |
- | |
88 | goto cont; |
- | |
89 | } |
- | |
90 | - | ||
91 | if (c == 0) { /* no non-delimiter characters */ |
- | |
92 | *last = NULL; |
- | |
93 | return (NULL); |
- | |
94 | } |
- | |
95 | - | ||
96 | tok = s - 1; |
- | |
97 | - | ||
98 | for (;;) { |
- | |
99 | c = *s++; |
- | |
100 | spanp = (char *)delim; |
- | |
101 | do { |
- | |
102 | if ((sc = *spanp++) == c) { |
- | |
103 | if (c == 0) |
- | |
104 | s = NULL; |
- | |
105 | else |
- | |
106 | s[-1] = '\0'; |
- | |
107 | *last = s; |
- | |
108 | return (tok); |
- | |
109 | } |
- | |
110 | } while (sc != 0); |
- | |
111 | } |
- | |
112 | } |
- | |
113 | - | ||
114 | /* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
- | |
115 | char * cli_strtok(char *s, const char *delim) |
- | |
116 | { |
- | |
117 | static char *last; |
- | |
118 | - | ||
119 | return (cli_strtok_r(s, delim, &last)); |
- | |
120 | } |
- | |
121 | - | ||
122 | /* Count and return the # of elements in an array */ |
42 | /* Count and return the # of elements in an array */ |
123 | unsigned int cli_count_args(char **args) |
43 | unsigned int cli_count_args(char **args) |
124 | { |
44 | { |
125 | unsigned int i; |
45 | unsigned int i; |
126 | 46 | ||
127 | for (i=0; args[i] != NULL; i++); |
47 | for (i=0; args[i] != NULL; i++); |
128 | return i; |
48 | return i; |
129 | } |
49 | } |
130 | 50 | ||
131 | /* (re)allocates memory to store the current working directory, gets |
51 | /* (re)allocates memory to store the current working directory, gets |
132 | * and updates the current working directory, formats the prompt |
52 | * and updates the current working directory, formats the prompt |
133 | * string */ |
53 | * string */ |
134 | unsigned int cli_set_prompt(cliuser_t *usr) |
54 | unsigned int cli_set_prompt(cliuser_t *usr) |
135 | { |
55 | { |
136 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX); |
56 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX); |
137 | if (NULL == usr->prompt) { |
57 | if (NULL == usr->prompt) { |
138 | cli_error(CL_ENOMEM, "Can not allocate prompt"); |
58 | cli_error(CL_ENOMEM, "Can not allocate prompt"); |
139 | cli_errno = CL_ENOMEM; |
59 | cli_errno = CL_ENOMEM; |
140 | return 1; |
60 | return 1; |
141 | } |
61 | } |
142 | memset(usr->prompt, 0, sizeof(usr->prompt)); |
62 | memset(usr->prompt, 0, sizeof(usr->prompt)); |
143 | 63 | ||
144 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX); |
64 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX); |
145 | if (NULL == usr->cwd) { |
65 | if (NULL == usr->cwd) { |
146 | cli_error(CL_ENOMEM, "Can not allocate cwd"); |
66 | cli_error(CL_ENOMEM, "Can not allocate cwd"); |
147 | cli_errno = CL_ENOMEM; |
67 | cli_errno = CL_ENOMEM; |
148 | return 1; |
68 | return 1; |
149 | } |
69 | } |
150 | memset(usr->cwd, 0, sizeof(usr->cwd)); |
70 | memset(usr->cwd, 0, sizeof(usr->cwd)); |
151 | 71 | ||
152 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1); |
72 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1); |
153 | 73 | ||
154 | if (NULL == usr->cwd) |
74 | if (NULL == usr->cwd) |
155 | snprintf(usr->cwd, PATH_MAX, "(unknown)"); |
75 | snprintf(usr->cwd, PATH_MAX, "(unknown)"); |
156 | 76 | ||
157 | asprintf(&usr->prompt, "%s # ", usr->cwd); |
77 | asprintf(&usr->prompt, "%s # ", usr->cwd); |
158 | 78 | ||
159 | return 0; |
79 | return 0; |
160 | } |
80 | } |
161 | 81 | ||
162 | 82 | ||
163 | 83 |