1/*-
2 * Copyright (c) 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Jan-Simon Pendry.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static const char sccsid[] = "@(#)apply.c 8.4 (Berkeley) 4/4/94";
40#endif
41static const char rcsid[] =
| 1/*-
2 * Copyright (c) 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Jan-Simon Pendry.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static const char sccsid[] = "@(#)apply.c 8.4 (Berkeley) 4/4/94";
40#endif
41static const char rcsid[] =
|
42 "$FreeBSD: head/usr.bin/apply/apply.c 82051 2001-08-21 11:24:53Z brian $";
| 42 "$FreeBSD: head/usr.bin/apply/apply.c 82057 2001-08-21 12:54:15Z brian $";
|
43#endif /* not lint */
44
45#include <sys/types.h>
46
47#include <sys/wait.h>
48
49#include <ctype.h>
50#include <err.h>
51#include <paths.h>
52#include <signal.h>
53#include <stdio.h>
54#include <stdlib.h>
55#include <string.h>
56#include <unistd.h>
57
58#define EXEC "exec "
59
60static int exec_shell(const char *, char *, char *);
61static void usage(void);
62
63int
64main(int argc, char *argv[]) {
65 int ch, debug, i, magic, n, nargs, offset, rval;
66 size_t clen, cmdsize, l;
67 char *c, *cmd, *name, *p, *q, *shell, *slashp, *tmpshell;
68
69 debug = 0;
70 magic = '%'; /* Default magic char is `%'. */
71 nargs = -1;
72 while ((ch = getopt(argc, argv, "a:d0123456789")) != -1)
73 switch (ch) {
74 case 'a':
75 if (optarg[1] != '\0')
76 errx(1,
77 "illegal magic character specification");
78 magic = optarg[0];
79 break;
80 case 'd':
81 debug = 1;
82 break;
83 case '0': case '1': case '2': case '3': case '4':
84 case '5': case '6': case '7': case '8': case '9':
85 if (nargs != -1)
86 errx(1,
87 "only one -# argument may be specified");
88 nargs = optopt - '0';
89 break;
90 default:
91 usage();
92 }
93 argc -= optind;
94 argv += optind;
95
96 if (argc < 2)
97 usage();
98
99 /*
100 * The command to run is argv[0], and the args are argv[1..].
101 * Look for %digit references in the command, remembering the
102 * largest one.
103 */
104 for (n = 0, p = argv[0]; *p != '\0'; ++p)
105 if (p[0] == magic && isdigit(p[1]) && p[1] != '0') {
106 ++p;
107 if (p[0] - '0' > n)
108 n = p[0] - '0';
109 }
110
111 /*
112 * Figure out the shell and name arguments to pass to execl()
113 * in exec_shell(). Always malloc() shell and just set name
114 * to point at the last part of shell if there are any backslashes,
115 * otherwise just set it to point at the space malloc()'d. If
116 * SHELL environment variable exists, replace contents of
117 * shell with it.
118 */
119 shell = name = NULL;
120 tmpshell = getenv("SHELL");
121 shell = (tmpshell != NULL) ? strdup(tmpshell) : strdup(_PATH_BSHELL);
122 if (shell == NULL)
123 err(1, "strdup() failed");
124 slashp = strrchr(shell, '/');
125 name = (slashp != NULL) ? slashp + 1 : shell;
126
127 /*
128 * If there were any %digit references, then use those, otherwise
129 * build a new command string with sufficient %digit references at
130 * the end to consume (nargs) arguments each time round the loop.
131 * Allocate enough space to hold the maximum command. Save the
132 * size to pass to snprintf().
133 */
134 cmdsize = sizeof(EXEC) - 1 + strlen(argv[0])
135 + 9 * (sizeof(" %1") - 1) + 1;
136 if ((cmd = malloc(cmdsize)) == NULL)
137 err(1, NULL);
138
139 if (n == 0) {
140 /* If nargs not set, default to a single argument. */
141 if (nargs == -1)
142 nargs = 1;
143
144 p = cmd;
145 offset = snprintf(cmd, cmdsize, EXEC "%s", argv[0]);
| 43#endif /* not lint */
44
45#include <sys/types.h>
46
47#include <sys/wait.h>
48
49#include <ctype.h>
50#include <err.h>
51#include <paths.h>
52#include <signal.h>
53#include <stdio.h>
54#include <stdlib.h>
55#include <string.h>
56#include <unistd.h>
57
58#define EXEC "exec "
59
60static int exec_shell(const char *, char *, char *);
61static void usage(void);
62
63int
64main(int argc, char *argv[]) {
65 int ch, debug, i, magic, n, nargs, offset, rval;
66 size_t clen, cmdsize, l;
67 char *c, *cmd, *name, *p, *q, *shell, *slashp, *tmpshell;
68
69 debug = 0;
70 magic = '%'; /* Default magic char is `%'. */
71 nargs = -1;
72 while ((ch = getopt(argc, argv, "a:d0123456789")) != -1)
73 switch (ch) {
74 case 'a':
75 if (optarg[1] != '\0')
76 errx(1,
77 "illegal magic character specification");
78 magic = optarg[0];
79 break;
80 case 'd':
81 debug = 1;
82 break;
83 case '0': case '1': case '2': case '3': case '4':
84 case '5': case '6': case '7': case '8': case '9':
85 if (nargs != -1)
86 errx(1,
87 "only one -# argument may be specified");
88 nargs = optopt - '0';
89 break;
90 default:
91 usage();
92 }
93 argc -= optind;
94 argv += optind;
95
96 if (argc < 2)
97 usage();
98
99 /*
100 * The command to run is argv[0], and the args are argv[1..].
101 * Look for %digit references in the command, remembering the
102 * largest one.
103 */
104 for (n = 0, p = argv[0]; *p != '\0'; ++p)
105 if (p[0] == magic && isdigit(p[1]) && p[1] != '0') {
106 ++p;
107 if (p[0] - '0' > n)
108 n = p[0] - '0';
109 }
110
111 /*
112 * Figure out the shell and name arguments to pass to execl()
113 * in exec_shell(). Always malloc() shell and just set name
114 * to point at the last part of shell if there are any backslashes,
115 * otherwise just set it to point at the space malloc()'d. If
116 * SHELL environment variable exists, replace contents of
117 * shell with it.
118 */
119 shell = name = NULL;
120 tmpshell = getenv("SHELL");
121 shell = (tmpshell != NULL) ? strdup(tmpshell) : strdup(_PATH_BSHELL);
122 if (shell == NULL)
123 err(1, "strdup() failed");
124 slashp = strrchr(shell, '/');
125 name = (slashp != NULL) ? slashp + 1 : shell;
126
127 /*
128 * If there were any %digit references, then use those, otherwise
129 * build a new command string with sufficient %digit references at
130 * the end to consume (nargs) arguments each time round the loop.
131 * Allocate enough space to hold the maximum command. Save the
132 * size to pass to snprintf().
133 */
134 cmdsize = sizeof(EXEC) - 1 + strlen(argv[0])
135 + 9 * (sizeof(" %1") - 1) + 1;
136 if ((cmd = malloc(cmdsize)) == NULL)
137 err(1, NULL);
138
139 if (n == 0) {
140 /* If nargs not set, default to a single argument. */
141 if (nargs == -1)
142 nargs = 1;
143
144 p = cmd;
145 offset = snprintf(cmd, cmdsize, EXEC "%s", argv[0]);
|
146 if (offset < 0 || offset >= cmdsize)
| 146 if ((size_t)offset >= cmdsize)
|
147 err(1, "snprintf() failed");
148 p += offset;
149 cmdsize -= offset;
150 for (i = 1; i <= nargs; i++) {
151 offset = snprintf(p, cmdsize, " %c%d", magic, i);
| 147 err(1, "snprintf() failed");
148 p += offset;
149 cmdsize -= offset;
150 for (i = 1; i <= nargs; i++) {
151 offset = snprintf(p, cmdsize, " %c%d", magic, i);
|
152 if (offset < 0 || offset >= cmdsize)
| 152 if ((size_t)offset >= cmdsize)
|
153 err(1, "snprintf() failed");
154 p += offset;
155 cmdsize -= offset;
156 }
157
158 /*
159 * If nargs set to the special value 0, eat a single
160 * argument for each command execution.
161 */
162 if (nargs == 0)
163 nargs = 1;
164 } else {
165 offset = snprintf(cmd, cmdsize, EXEC "%s", argv[0]);
| 153 err(1, "snprintf() failed");
154 p += offset;
155 cmdsize -= offset;
156 }
157
158 /*
159 * If nargs set to the special value 0, eat a single
160 * argument for each command execution.
161 */
162 if (nargs == 0)
163 nargs = 1;
164 } else {
165 offset = snprintf(cmd, cmdsize, EXEC "%s", argv[0]);
|
166 if (offset < 0 || offset >= cmdsize)
| 166 if ((size_t)offset >= cmdsize)
|
167 err(1, "snprintf() failed");
168 nargs = n;
169 }
170
171 /*
172 * Grab some space in which to build the command. Allocate
173 * as necessary later, but no reason to build it up slowly
174 * for the normal case.
175 */
176 if ((c = malloc(clen = 1024)) == NULL)
177 err(1, NULL);
178
179 /*
180 * (argc) and (argv) are still offset by one to make it simpler to
181 * expand %digit references. At the end of the loop check for (argc)
182 * equals 1 means that all the (argv) has been consumed.
183 */
184 for (rval = 0; argc > nargs; argc -= nargs, argv += nargs) {
185 /*
186 * Find a max value for the command length, and ensure
187 * there's enough space to build it.
188 */
189 for (l = strlen(cmd), i = 0; i < nargs; i++)
190 l += strlen(argv[i+1]);
191 if (l > clen && (c = realloc(c, clen = l)) == NULL)
192 err(1, NULL);
193
194 /* Expand command argv references. */
195 for (p = cmd, q = c; *p != '\0'; ++p)
196 if (p[0] == magic && isdigit(p[1]) && p[1] != '0') {
197 offset = snprintf(q, l, "%s",
198 argv[(++p)[0] - '0']);
| 167 err(1, "snprintf() failed");
168 nargs = n;
169 }
170
171 /*
172 * Grab some space in which to build the command. Allocate
173 * as necessary later, but no reason to build it up slowly
174 * for the normal case.
175 */
176 if ((c = malloc(clen = 1024)) == NULL)
177 err(1, NULL);
178
179 /*
180 * (argc) and (argv) are still offset by one to make it simpler to
181 * expand %digit references. At the end of the loop check for (argc)
182 * equals 1 means that all the (argv) has been consumed.
183 */
184 for (rval = 0; argc > nargs; argc -= nargs, argv += nargs) {
185 /*
186 * Find a max value for the command length, and ensure
187 * there's enough space to build it.
188 */
189 for (l = strlen(cmd), i = 0; i < nargs; i++)
190 l += strlen(argv[i+1]);
191 if (l > clen && (c = realloc(c, clen = l)) == NULL)
192 err(1, NULL);
193
194 /* Expand command argv references. */
195 for (p = cmd, q = c; *p != '\0'; ++p)
196 if (p[0] == magic && isdigit(p[1]) && p[1] != '0') {
197 offset = snprintf(q, l, "%s",
198 argv[(++p)[0] - '0']);
|
199 if (offset < 0 || offset >= l)
| 199 if ((size_t)offset >= l)
|
200 err(1, "snprintf() failed");
201 q += offset;
202 l -= offset;
203 } else
204 *q++ = *p;
205
206 /* Terminate the command string. */
207 *q = '\0';
208
209 /* Run the command. */
210 if (debug)
211 (void)printf("%s\n", c);
212 else
213 if (exec_shell(c, shell, name))
214 rval = 1;
215 }
216
217 if (argc != 1)
218 errx(1, "expecting additional argument%s after \"%s\"",
219 (nargs - argc) ? "s" : "", argv[argc - 1]);
220 free(cmd);
221 free(c);
222 free(shell);
223 exit(rval);
224}
225
226/*
227 * exec_shell --
228 * Execute a shell command using passed use_shell and use_name
229 * arguments.
230 */
231static int
232exec_shell(const char *command, char *use_shell, char *use_name)
233{
234 pid_t pid;
235 int omask, pstat;
236 sig_t intsave, quitsave;
237
238 if (!command) /* just checking... */
239 return(1);
240
241 omask = sigblock(sigmask(SIGCHLD));
242 switch(pid = vfork()) {
243 case -1: /* error */
244 err(1, "vfork");
245 case 0: /* child */
246 (void)sigsetmask(omask);
247 execl(use_shell, use_name, "-c", command, (char *)NULL);
248 warn("%s", use_shell);
249 _exit(1);
250 }
251 intsave = signal(SIGINT, SIG_IGN);
252 quitsave = signal(SIGQUIT, SIG_IGN);
253 pid = waitpid(pid, &pstat, 0);
254 (void)sigsetmask(omask);
255 (void)signal(SIGINT, intsave);
256 (void)signal(SIGQUIT, quitsave);
257 return(pid == -1 ? -1 : pstat);
258}
259
260void
261usage()
262{
263
264 (void)fprintf(stderr,
265 "usage: apply [-a magic] [-d] [-0123456789] command arguments ...\n");
266 exit(1);
267}
| 200 err(1, "snprintf() failed");
201 q += offset;
202 l -= offset;
203 } else
204 *q++ = *p;
205
206 /* Terminate the command string. */
207 *q = '\0';
208
209 /* Run the command. */
210 if (debug)
211 (void)printf("%s\n", c);
212 else
213 if (exec_shell(c, shell, name))
214 rval = 1;
215 }
216
217 if (argc != 1)
218 errx(1, "expecting additional argument%s after \"%s\"",
219 (nargs - argc) ? "s" : "", argv[argc - 1]);
220 free(cmd);
221 free(c);
222 free(shell);
223 exit(rval);
224}
225
226/*
227 * exec_shell --
228 * Execute a shell command using passed use_shell and use_name
229 * arguments.
230 */
231static int
232exec_shell(const char *command, char *use_shell, char *use_name)
233{
234 pid_t pid;
235 int omask, pstat;
236 sig_t intsave, quitsave;
237
238 if (!command) /* just checking... */
239 return(1);
240
241 omask = sigblock(sigmask(SIGCHLD));
242 switch(pid = vfork()) {
243 case -1: /* error */
244 err(1, "vfork");
245 case 0: /* child */
246 (void)sigsetmask(omask);
247 execl(use_shell, use_name, "-c", command, (char *)NULL);
248 warn("%s", use_shell);
249 _exit(1);
250 }
251 intsave = signal(SIGINT, SIG_IGN);
252 quitsave = signal(SIGQUIT, SIG_IGN);
253 pid = waitpid(pid, &pstat, 0);
254 (void)sigsetmask(omask);
255 (void)signal(SIGINT, intsave);
256 (void)signal(SIGQUIT, quitsave);
257 return(pid == -1 ? -1 : pstat);
258}
259
260void
261usage()
262{
263
264 (void)fprintf(stderr,
265 "usage: apply [-a magic] [-d] [-0123456789] command arguments ...\n");
266 exit(1);
267}
|