| 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
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| 2 | * All rights reserved.
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| 3 | *
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| 4 | * Redistribution and use in source and binary forms, with or without
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| 5 | * modification, are permitted provided that the following conditions are met:
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| 6 | *
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| 7 | * Redistributions of source code must retain the above copyright notice, this
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| 8 | * list of conditions and the following disclaimer.
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| 9 | *
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| 10 | * Redistributions in binary form must reproduce the above copyright notice,
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| 11 | * this list of conditions and the following disclaimer in the documentation
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| 12 | * and/or other materials provided with the distribution.
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| 13 | *
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| 14 | * Neither the name of the original program's authors nor the names of its
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| 15 | * contributors may be used to endorse or promote products derived from this
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| 16 | * software without specific prior written permission.
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| 17 | *
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| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| 28 | * POSSIBILITY OF SUCH DAMAGE.
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| 29 | */
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| 30 |
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| 31 | #include <stdio.h>
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| 32 | #include <stdlib.h>
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| 33 | #include <string.h>
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| 34 | #include <unistd.h>
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| 35 | #include "config.h"
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| 36 | #include "scli.h"
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| 37 | #include "input.h"
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| 38 | #include "util.h"
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| 39 | #include "errors.h"
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| 40 | #include "cmds/cmds.h"
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| 41 |
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| 42 | /* See scli.h */
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| 43 | static cliuser_t usr;
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| 44 |
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| 45 | /* Modified by the 'quit' module, which is compiled before this */
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| 46 | extern unsigned int cli_quit;
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| 47 |
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| 48 | /* Globals that are modified during start-up that modules/builtins should
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| 49 | * be aware of. */
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| 50 | volatile unsigned int cli_interactive = 1;
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| 51 | volatile unsigned int cli_verbocity = 1;
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| 52 |
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| 53 | /* The official name of this program
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| 54 | * (change to your liking in configure.ac and re-run autoconf) */
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| 55 | const char *progname = PACKAGE_NAME;
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| 56 |
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| 57 | /* (re)allocates memory to store the current working directory, gets
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| 58 | * and updates the current working directory, formats the prompt string */
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| 59 | unsigned int cli_set_prompt(cliuser_t *usr)
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| 60 | {
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| 61 | usr->prompt = (char *) realloc(usr->prompt, PATH_MAX);
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| 62 | if (NULL == usr->prompt) {
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| 63 | cli_error(CL_ENOMEM, "Can not allocate prompt");
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| 64 | return 1;
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| 65 | }
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| 66 | memset(usr->prompt, 0, sizeof(usr->prompt));
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| 67 |
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| 68 | usr->cwd = (char *) realloc(usr->cwd, PATH_MAX);
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| 69 | if (NULL == usr->cwd) {
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| 70 | cli_error(CL_ENOMEM, "Can not allocate cwd");
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| 71 | return 1;
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| 72 | }
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| 73 | memset(usr->cwd, 0, sizeof(usr->cwd));
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| 74 |
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| 75 | usr->cwd = getcwd(usr->cwd, PATH_MAX - 1);
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| 76 |
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| 77 | if (NULL == usr->cwd)
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| 78 | snprintf(usr->cwd, PATH_MAX, "(unknown)");
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| 79 |
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| 80 | snprintf(usr->prompt,
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| 81 | PATH_MAX,
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| 82 | "%s # ",
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| 83 | usr->cwd);
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| 84 |
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| 85 | return 0;
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| 86 | }
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| 87 |
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| 88 | int cli_init(cliuser_t *usr)
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| 89 | {
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| 90 | usr->line = (char *) NULL;
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| 91 | usr->name = "root";
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| 92 | usr->home = "/";
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| 93 | usr->cwd = (char *) NULL;
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| 94 | usr->prompt = (char *) NULL;
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| 95 | chdir(usr->home);
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| 96 | usr->lasterr = 0;
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| 97 | return (int) cli_set_prompt(usr);
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| 98 | }
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| 99 |
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| 100 | /* Destructor */
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| 101 | void cli_finit(cliuser_t *usr)
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| 102 | {
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| 103 | if (NULL != usr->line)
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| 104 | free(usr->line);
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| 105 | if (NULL != usr->prompt)
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| 106 | free(usr->prompt);
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| 107 | if (NULL != usr->cwd)
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| 108 | free(usr->cwd);
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| 109 | }
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| 110 |
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| 111 | int main(int argc, char *argv[])
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| 112 | {
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| 113 | int ret = 0;
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| 114 | int i = 0;
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| 115 |
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| 116 | if (cli_init(&usr))
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| 117 | exit(EXIT_FAILURE);
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| 118 |
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| 119 | printf("Welcome to %s - %s\nType `help' at any time for usage information.\n",
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| 120 | progname, PACKAGE_STRING);
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| 121 |
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| 122 | while (!cli_quit) {
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| 123 | cli_set_prompt(&usr);
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| 124 | get_input(&usr);
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| 125 | if (NULL != usr.line) {
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| 126 | ret = tok_input(&usr);
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| 127 | usr.lasterr = ret;
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| 128 | }
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| 129 | i++;
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| 130 | }
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| 131 | goto finit;
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| 132 |
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| 133 | finit:
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| 134 | cli_finit(&usr);
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| 135 | return ret;
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| 136 | }
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