1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2007 Robert N. M. Watson
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
31
32 #include <err.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <sysexits.h>
37 #include <unistd.h>
38
39 #include "ddb.h"
40
41 void ddb_readfile(char *file);
42 void ddb_main(int argc, char *argv[]);
43
44 void
usage(void)45 usage(void)
46 {
47
48 fprintf(stderr, "usage: ddb capture [-M core] [-N system] print\n");
49 fprintf(stderr, " ddb capture [-M core] [-N system] status\n");
50 fprintf(stderr, " ddb script scriptname\n");
51 fprintf(stderr, " ddb script scriptname=script\n");
52 fprintf(stderr, " ddb scripts\n");
53 fprintf(stderr, " ddb unscript scriptname\n");
54 fprintf(stderr, " ddb pathname\n");
55 exit(EX_USAGE);
56 }
57
58 void
ddb_readfile(char * filename)59 ddb_readfile(char *filename)
60 {
61 char buf[BUFSIZ];
62 FILE* f;
63
64 if ((f = fopen(filename, "r")) == NULL)
65 err(EX_UNAVAILABLE, "fopen: %s", filename);
66
67 #define WHITESP " \t"
68 #define MAXARG 2
69 while (fgets(buf, BUFSIZ, f)) {
70 int argc = 0;
71 char *argv[MAXARG];
72 size_t spn;
73
74 spn = strlen(buf);
75 if (buf[spn-1] == '\n')
76 buf[spn-1] = '\0';
77
78 spn = strspn(buf, WHITESP);
79 argv[0] = buf + spn;
80 if (*argv[0] == '#' || *argv[0] == '\0')
81 continue;
82 argc++;
83
84 spn = strcspn(argv[0], WHITESP);
85 argv[1] = argv[0] + spn + strspn(argv[0] + spn, WHITESP);
86 argv[0][spn] = '\0';
87 if (*argv[1] != '\0')
88 argc++;
89
90 #ifdef DEBUG
91 {
92 int i;
93 printf("argc = %d\n", argc);
94 for (i = 0; i < argc; i++) {
95 printf("arg[%d] = %s\n", i, argv[i]);
96 }
97 }
98 #endif
99 ddb_main(argc, argv);
100 }
101 fclose(f);
102 }
103
104 void
ddb_main(int argc,char * argv[])105 ddb_main(int argc, char *argv[])
106 {
107
108 if (argc < 1)
109 usage();
110
111 if (strcmp(argv[0], "capture") == 0)
112 ddb_capture(argc, argv);
113 else if (strcmp(argv[0], "script") == 0)
114 ddb_script(argc, argv);
115 else if (strcmp(argv[0], "scripts") == 0)
116 ddb_scripts(argc, argv);
117 else if (strcmp(argv[0], "unscript") == 0)
118 ddb_unscript(argc, argv);
119 else
120 usage();
121 }
122
123 int
main(int argc,char * argv[])124 main(int argc, char *argv[])
125 {
126
127 /*
128 * If we've only got one argument and it's an absolute path to a file,
129 * interpret as a file to be read in.
130 */
131 if (argc == 2 && argv[1][0] == '/' && access(argv[1], R_OK) == 0)
132 ddb_readfile(argv[1]);
133 else
134 ddb_main(argc-1, argv+1);
135 exit(EX_OK);
136 }
137