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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 | * |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions are met: |
5 | * modification, are permitted provided that the following conditions are met: |
6 | * |
6 | * |
7 | * Redistributions of source code must retain the above copyright notice, this |
7 | * Redistributions of source code must retain the above copyright notice, this |
8 | * list of conditions and the following disclaimer. |
8 | * list of conditions and the following disclaimer. |
9 | * |
9 | * |
10 | * Redistributions in binary form must reproduce the above copyright notice, |
10 | * Redistributions in binary form must reproduce the above copyright notice, |
11 | * this list of conditions and the following disclaimer in the documentation |
11 | * this list of conditions and the following disclaimer in the documentation |
12 | * and/or other materials provided with the distribution. |
12 | * and/or other materials provided with the distribution. |
13 | * |
13 | * |
14 | * Neither the name of the original program's authors nor the names of its |
14 | * Neither the name of the original program's authors nor the names of its |
15 | * contributors may be used to endorse or promote products derived from this |
15 | * contributors may be used to endorse or promote products derived from this |
16 | * software without specific prior written permission. |
16 | * software without specific prior written permission. |
17 | * |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
28 | * POSSIBILITY OF SUCH DAMAGE. |
28 | * POSSIBILITY OF SUCH DAMAGE. |
29 | */ |
29 | */ |
30 | 30 | ||
31 | #include <stdio.h> |
31 | #include <stdio.h> |
32 | #include <stdlib.h> |
32 | #include <stdlib.h> |
33 | #include <string.h> |
33 | #include <string.h> |
34 | #include <unistd.h> |
34 | #include <unistd.h> |
35 | #include "config.h" |
35 | #include "config.h" |
36 | #include "scli.h" |
36 | #include "scli.h" |
37 | #include "input.h" |
37 | #include "input.h" |
38 | #include "util.h" |
38 | #include "util.h" |
39 | #include "errors.h" |
39 | #include "errors.h" |
40 | #include "cmds/cmds.h" |
40 | #include "cmds/cmds.h" |
41 | 41 | ||
42 | /* See scli.h */ |
42 | /* See scli.h */ |
43 | static cliuser_t usr; |
43 | static cliuser_t usr; |
44 | 44 | ||
45 | /* Modified by the 'quit' module, which is compiled before this */ |
- | |
46 | extern unsigned int cli_quit; |
- | |
47 | - | ||
48 | /* Globals that are modified during start-up that modules/builtins should |
45 | /* Globals that are modified during start-up that modules/builtins |
49 | * be aware of. */ |
46 | * should be aware of. */ |
- | 47 | volatile unsigned int cli_quit = 0; |
|
50 | volatile unsigned int cli_interactive = 1; |
48 | volatile unsigned int cli_interactive = 1; |
51 | volatile unsigned int cli_verbocity = 1; |
49 | volatile unsigned int cli_verbocity = 1; |
52 | 50 | ||
53 | /* The official name of this program |
51 | /* The official name of this program |
54 | * (change to your liking in configure.ac and re-run autoconf) */ |
52 | * (change to your liking in configure.ac and re-run autoconf) */ |
55 | const char *progname = PACKAGE_NAME; |
53 | const char *progname = PACKAGE_NAME; |
56 | 54 | ||
- | 55 | /* These are not exposed, even to builtins */ |
|
- | 56 | static int cli_init(cliuser_t *usr); |
|
- | 57 | static void cli_finit(cliuser_t *usr); |
|
- | 58 | ||
57 | /* (re)allocates memory to store the current working directory, gets |
59 | /* (re)allocates memory to store the current working directory, gets |
58 | * and updates the current working directory, formats the prompt string */ |
60 | * and updates the current working directory, formats the prompt |
- | 61 | * string */ |
|
59 | unsigned int cli_set_prompt(cliuser_t *usr) |
62 | unsigned int cli_set_prompt(cliuser_t *usr) |
60 | { |
63 | { |
61 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX); |
64 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX); |
62 | if (NULL == usr->prompt) { |
65 | if (NULL == usr->prompt) { |
63 | cli_error(CL_ENOMEM, "Can not allocate prompt"); |
66 | cli_error(CL_ENOMEM, "Can not allocate prompt"); |
64 | return 1; |
67 | return 1; |
65 | } |
68 | } |
66 | memset(usr->prompt, 0, sizeof(usr->prompt)); |
69 | memset(usr->prompt, 0, sizeof(usr->prompt)); |
67 | 70 | ||
68 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX); |
71 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX); |
69 | if (NULL == usr->cwd) { |
72 | if (NULL == usr->cwd) { |
70 | cli_error(CL_ENOMEM, "Can not allocate cwd"); |
73 | cli_error(CL_ENOMEM, "Can not allocate cwd"); |
71 | return 1; |
74 | return 1; |
72 | } |
75 | } |
73 | memset(usr->cwd, 0, sizeof(usr->cwd)); |
76 | memset(usr->cwd, 0, sizeof(usr->cwd)); |
74 | 77 | ||
75 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1); |
78 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1); |
76 | 79 | ||
77 | if (NULL == usr->cwd) |
80 | if (NULL == usr->cwd) |
78 | snprintf(usr->cwd, PATH_MAX, "(unknown)"); |
81 | snprintf(usr->cwd, PATH_MAX, "(unknown)"); |
79 | 82 | ||
80 | snprintf(usr->prompt, |
83 | if (1 < cli_psprintf(&usr->prompt, "%s # ", usr->cwd)) { |
81 | PATH_MAX, |
84 | cli_error(cli_errno, "Failed to set prompt"); |
82 | "%s # ", |
85 | return 1; |
83 | usr->cwd); |
86 | } |
84 | 87 | ||
85 | return 0; |
88 | return 0; |
86 | } |
89 | } |
87 | 90 | ||
- | 91 | /* Constructor */ |
|
88 | int cli_init(cliuser_t *usr) |
92 | static int cli_init(cliuser_t *usr) |
89 | { |
93 | { |
90 | usr->line = (char *) NULL; |
94 | usr->line = (char *) NULL; |
91 | usr->name = "root"; |
95 | usr->name = "root"; |
92 | usr->home = "/"; |
96 | usr->home = "/"; |
93 | usr->cwd = (char *) NULL; |
97 | usr->cwd = (char *) NULL; |
94 | usr->prompt = (char *) NULL; |
98 | usr->prompt = (char *) NULL; |
95 | chdir(usr->home); |
99 | chdir(usr->home); |
96 | usr->lasterr = 0; |
100 | usr->lasterr = 0; |
97 | return (int) cli_set_prompt(usr); |
101 | return (int) cli_set_prompt(usr); |
98 | } |
102 | } |
99 | 103 | ||
100 | /* Destructor */ |
104 | /* Destructor */ |
101 | void cli_finit(cliuser_t *usr) |
105 | static void cli_finit(cliuser_t *usr) |
102 | { |
106 | { |
103 | if (NULL != usr->line) |
107 | if (NULL != usr->line) |
104 | free(usr->line); |
108 | free(usr->line); |
105 | if (NULL != usr->prompt) |
109 | if (NULL != usr->prompt) |
106 | free(usr->prompt); |
110 | free(usr->prompt); |
107 | if (NULL != usr->cwd) |
111 | if (NULL != usr->cwd) |
108 | free(usr->cwd); |
112 | free(usr->cwd); |
109 | } |
113 | } |
110 | 114 | ||
111 | int main(int argc, char *argv[]) |
115 | int main(int argc, char *argv[]) |
112 | { |
116 | { |
113 | int ret = 0; |
117 | int ret = 0; |
114 | int i = 0; |
118 | int i = 0; |
115 | 119 | ||
116 | if (cli_init(&usr)) |
120 | if (cli_init(&usr)) |
117 | exit(EXIT_FAILURE); |
121 | exit(EXIT_FAILURE); |
118 | 122 | ||
119 | printf("Welcome to %s - %s\nType `help' at any time for usage information.\n", |
123 | printf("Welcome to %s - %s\nType `help' at any time for usage information.\n", |
120 | progname, PACKAGE_STRING); |
124 | progname, PACKAGE_STRING); |
121 | 125 | ||
122 | while (!cli_quit) { |
126 | while (!cli_quit) { |
123 | cli_set_prompt(&usr); |
127 | cli_set_prompt(&usr); |
124 | get_input(&usr); |
128 | get_input(&usr); |
125 | if (NULL != usr.line) { |
129 | if (NULL != usr.line) { |
126 | ret = tok_input(&usr); |
130 | ret = tok_input(&usr); |
127 | usr.lasterr = ret; |
131 | usr.lasterr = ret; |
128 | } |
132 | } |
129 | i++; |
133 | i++; |
130 | } |
134 | } |
131 | goto finit; |
135 | goto finit; |
132 | 136 | ||
133 | finit: |
137 | finit: |
134 | cli_finit(&usr); |
138 | cli_finit(&usr); |
135 | return ret; |
139 | return ret; |
136 | } |
140 | } |
137 | 141 |