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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 | /* Globals that are modified during start-up that modules/builtins |
45 | /* Globals that are modified during start-up that modules/builtins |
46 | * should be aware of. */ |
46 | * should be aware of. */ |
47 | volatile unsigned int cli_quit = 0; |
47 | volatile unsigned int cli_quit = 0; |
48 | volatile unsigned int cli_interactive = 1; |
48 | volatile unsigned int cli_interactive = 1; |
49 | volatile unsigned int cli_verbocity = 1; |
49 | volatile unsigned int cli_verbocity = 1; |
50 | 50 | ||
51 | /* The official name of this program |
51 | /* The official name of this program |
52 | * (change to your liking in configure.ac and re-run autoconf) */ |
52 | * (change to your liking in configure.ac and re-run autoconf) */ |
53 | const char *progname = PACKAGE_NAME; |
53 | const char *progname = PACKAGE_NAME; |
54 | 54 | ||
55 | /* These are not exposed, even to builtins */ |
55 | /* These are not exposed, even to builtins */ |
56 | static int cli_init(cliuser_t *usr); |
56 | static int cli_init(cliuser_t *usr); |
57 | static void cli_finit(cliuser_t *usr); |
57 | static void cli_finit(cliuser_t *usr); |
58 | 58 | ||
59 | /* (re)allocates memory to store the current working directory, gets |
- | |
60 | * and updates the current working directory, formats the prompt |
- | |
61 | * string */ |
- | |
62 | unsigned int cli_set_prompt(cliuser_t *usr) |
- | |
63 | { |
- | |
64 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX); |
- | |
65 | if (NULL == usr->prompt) { |
- | |
66 | cli_error(CL_ENOMEM, "Can not allocate prompt"); |
- | |
67 | return 1; |
- | |
68 | } |
- | |
69 | memset(usr->prompt, 0, sizeof(usr->prompt)); |
- | |
70 | - | ||
71 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX); |
- | |
72 | if (NULL == usr->cwd) { |
- | |
73 | cli_error(CL_ENOMEM, "Can not allocate cwd"); |
- | |
74 | return 1; |
- | |
75 | } |
- | |
76 | memset(usr->cwd, 0, sizeof(usr->cwd)); |
- | |
77 | - | ||
78 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1); |
- | |
79 | - | ||
80 | if (NULL == usr->cwd) |
- | |
81 | snprintf(usr->cwd, PATH_MAX, "(unknown)"); |
- | |
82 | - | ||
83 | if (1 < cli_psprintf(&usr->prompt, "%s # ", usr->cwd)) { |
- | |
84 | cli_error(cli_errno, "Failed to set prompt"); |
- | |
85 | return 1; |
- | |
86 | } |
- | |
87 | - | ||
88 | return 0; |
- | |
89 | } |
- | |
90 | - | ||
91 | /* Constructor */ |
59 | /* Constructor */ |
92 | static int cli_init(cliuser_t *usr) |
60 | static int cli_init(cliuser_t *usr) |
93 | { |
61 | { |
94 | usr->line = (char *) NULL; |
62 | usr->line = (char *) NULL; |
95 | usr->name = "root"; |
63 | usr->name = "root"; |
96 | usr->home = "/"; |
64 | usr->home = "/"; |
97 | usr->cwd = (char *) NULL; |
65 | usr->cwd = (char *) NULL; |
98 | usr->prompt = (char *) NULL; |
66 | usr->prompt = (char *) NULL; |
99 | chdir(usr->home); |
67 | chdir(usr->home); |
100 | usr->lasterr = 0; |
68 | usr->lasterr = 0; |
101 | return (int) cli_set_prompt(usr); |
69 | return (int) cli_set_prompt(usr); |
102 | } |
70 | } |
103 | 71 | ||
104 | /* Destructor */ |
72 | /* Destructor */ |
105 | static void cli_finit(cliuser_t *usr) |
73 | static void cli_finit(cliuser_t *usr) |
106 | { |
74 | { |
107 | if (NULL != usr->line) |
75 | if (NULL != usr->line) |
108 | free(usr->line); |
76 | free(usr->line); |
109 | if (NULL != usr->prompt) |
77 | if (NULL != usr->prompt) |
110 | free(usr->prompt); |
78 | free(usr->prompt); |
111 | if (NULL != usr->cwd) |
79 | if (NULL != usr->cwd) |
112 | free(usr->cwd); |
80 | free(usr->cwd); |
113 | } |
81 | } |
114 | 82 | ||
115 | int main(int argc, char *argv[]) |
83 | int main(int argc, char *argv[]) |
116 | { |
84 | { |
117 | int ret = 0; |
85 | int ret = 0; |
118 | int i = 0; |
86 | int i = 0; |
119 | 87 | ||
120 | if (cli_init(&usr)) |
88 | if (cli_init(&usr)) |
121 | exit(EXIT_FAILURE); |
89 | exit(EXIT_FAILURE); |
122 | 90 | ||
123 | printf("Welcome to %s - %s\nType `help' at any time for usage information.\n", |
91 | printf("Welcome to %s - %s\nType `help' at any time for usage information.\n", |
124 | progname, PACKAGE_STRING); |
92 | progname, PACKAGE_STRING); |
125 | 93 | ||
126 | while (!cli_quit) { |
94 | while (!cli_quit) { |
127 | cli_set_prompt(&usr); |
- | |
128 | get_input(&usr); |
95 | get_input(&usr); |
129 | if (NULL != usr.line) { |
96 | if (NULL != usr.line) { |
130 | ret = tok_input(&usr); |
97 | ret = tok_input(&usr); |
131 | usr.lasterr = ret; |
98 | usr.lasterr = ret; |
132 | } |
99 | } |
133 | i++; |
100 | i++; |
134 | } |
101 | } |
135 | goto finit; |
102 | goto finit; |
136 | 103 | ||
137 | finit: |
104 | finit: |
138 | cli_finit(&usr); |
105 | cli_finit(&usr); |
139 | return ret; |
106 | return ret; |
140 | } |
107 | } |
141 | 108 |