usr/src/cmd/svr4pkg/pkgscripts/cmdexec.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /* All Rights Reserved */
  29
  30
  31 #include <stdio.h>
  32 #include <ctype.h>
  33 #include <string.h>
  34 #include <locale.h>
  35 #include <libintl.h>
  36 #include <stdlib.h>
  37 #include <unistd.h>
  38 #include <pkglib.h>
  39
  40 #define COMMAND '!'
  41 #define LSIZE 256
  42
  43 #define ERR_NOTROOT     "You must be \"root\" for %s to execute properly."
  44
  45 static void     usage(void);
  46 static int      docmd(char *cmd, char *file, char *input);
  47
  48 int
  49 main(int argc, char *argv[])
  50 {
  51         FILE    *fpout, *fp;
  52         char    line[LSIZE],
  53                 *pt,
  54                 *keyword,       /* keyword = install || remove */
  55                 *input,         /* sed input file */
  56                 *cmd,
  57                 *srcfile,       /* sed data file */
  58                 *destfile;      /* target file to be updated */
  59         int     flag;
  60         char    *prog;
  61
  62         (void) setlocale(LC_ALL, "");
  63
  64 #if !defined(TEXT_DOMAIN)       /* Should be defined by cc -D */
  65 #define TEXT_DOMAIN "SYS_TEST"
  66 #endif
  67         (void) textdomain(TEXT_DOMAIN);
  68
  69         prog = set_prog_name(argv[0]);
  70
  71         if (getuid()) {
  72                 progerr(gettext(ERR_NOTROOT), prog);
  73                 exit(1);
  74         }
  75
  76         if (argc != 5)
  77                 usage();
  78
  79         cmd = argv[1];
  80         keyword = argv[2];
  81         srcfile = argv[3];
  82         destfile = argv[4];
  83
  84         srcfile = argv[3];
  85         if ((fp = fopen(srcfile, "r")) == NULL) {
  86                 progerr(gettext("unable to open %s"), srcfile);
  87                 exit(1);
  88         }
  89
  90         input = tempnam(NULL, "sedinp");
  91         if ((fpout = fopen(input, "w")) == NULL) {
  92                 progerr(gettext("unable to open %s"), input);
  93                 exit(2);
  94         }
  95
  96         flag = (-1);
  97         while (fgets(line, LSIZE, fp)) {
  98                 for (pt = line; isspace(*pt); /* void */)
  99                         ++pt;
 100                 if (*pt == '#')
 101                         continue;
 102                 if (*pt == COMMAND) {
 103                         if (flag > 0)
 104                                 break; /* no more lines to read */
 105                         pt = strtok(pt+1, " \t\n");
 106                         if (!pt) {
 107                                 progerr(gettext("null token after '!'"));
 108                                 exit(1);
 109                         }
 110                         flag = (strcmp(pt, keyword) ? 0 : 1);
 111                 } else if (flag == 1) { /* bug # 1083359 */
 112                         (void) fputs(line, fpout);
 113                 }
 114         }
 115         (void) fclose(fpout);
 116         if (flag > 0) {
 117                 if (docmd(cmd, destfile, input)) {
 118                         progerr(gettext("command failed <%s>"), cmd);
 119                         exit(1);
 120                 }
 121         }
 122         (void) unlink(input);
 123         return (0);
 124 }
 125
 126 static int
 127 docmd(char *cmd, char *file, char *input)
 128 {
 129         char *tempout;
 130         char command[256];
 131
 132         tempout = tempnam(NULL, "temp1");
 133         if (!tempout)
 134                 return (-1);
 135
 136         (void) sprintf(command, "%s -f %s <%s >%s", cmd, input, file, tempout);
 137         if (system(command))
 138                 return (-1);
 139
 140         (void) sprintf(command, "cp %s %s", tempout, file);
 141         if (system(command))
 142                 return (-1);
 143
 144         (void) unlink(tempout);
 145         free(tempout);
 146         return (0);
 147 }
 148
 149 static void
 150 usage(void)
 151 {
 152         (void) fprintf(stderr, gettext("usage: %s cmd keyword src dest\n"),
 153             get_prog_name());
 154         exit(2);
 155 }