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 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 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 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 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