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1 /* $NetBSD: progress.c,v 1.1 2003/01/22 00:14:12 jhawk Exp $ */
2
3 /*-
4 * Copyright (c) 2003 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by John Hawkinson.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of The NetBSD Foundation nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 #ifndef lint
37 __RCSID("$NetBSD: progress.c,v 1.1 2003/01/22 00:14:12 jhawk Exp $");
38 #endif /* not lint */
39
40 #include <sys/types.h>
41 #include <sys/param.h>
42 #include <sys/socket.h>
43 #include <sys/ioctl.h>
44 #include <sys/time.h>
45 #include <sys/wait.h>
46 #include <netinet/in.h>
47 #include <arpa/ftp.h>
48
49 #include <ctype.h>
50 #include <err.h>
51 #include <errno.h>
52 #include <fcntl.h>
53 #include <glob.h>
54 #include <signal.h>
55 #include <limits.h>
56 #include <netdb.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60 #include <termios.h>
61 #include <time.h>
62 #include <tzfile.h>
63 #include <unistd.h>
64
65 #define GLOBAL /* force GLOBAL decls in progressbar.h to be
66 * declared */
67 #include "progressbar.h"
68
69 static void usage(void);
70 int main(int, char *[]);
71
72 static void
73 usage(void)
74 {
75 fprintf(stderr,
76 "usage: %s [-z] [-f file] [-l length] cmd [args...]\n",
77 getprogname());
78 exit(1);
79 }
80
81
82 int
83 main(int argc, char *argv[])
84 {
85 static char fb_buf[BUFSIZ];
86 char *infile = NULL;
87 pid_t pid;
88 int ch, fd, outpipe[2], waitstat;
89 int lflag = 0, zflag = 0;
90 ssize_t nr, nw, off;
91 struct stat statb;
92
93 setprogname(argv[0]);
94
95 /* defaults: Read from stdin, 0 filesize (no completion estimate) */
96 fd = STDIN_FILENO;
97 filesize = 0;
98
99 while ((ch = getopt(argc, argv, "f:l:z")) != -1)
100 switch (ch) {
101 case 'f':
102 infile = optarg;
103 break;
104 case 'l':
105 lflag++;
106 filesize = strtoull(optarg, NULL, 0);
107 break;
108 case 'z':
109 zflag++;
110 break;
111 default:
112 case '?':
113 usage();
114 /* NOTREACHED */
115 }
116 argc -= optind;
117 argv += optind;
118
119 if (argc < 1)
120 usage();
121 if (infile && (fd = open(infile, O_RDONLY, 0)) < 0)
122 err(1, "%s", infile);
123
124 /* stat() to get the filesize unless overridden, or -z */
125 if (!zflag && !lflag && (fstat(fd, &statb) == 0))
126 filesize = statb.st_size;
127
128 /* gzip -l the file if we have the name and -z is given */
129 if (zflag && !lflag && infile != NULL) {
130 FILE *gzipsizepipe;
131 char buf[256], *cmd;
132 long size;
133
134 /*
135 * Read second word of last line of gzip -l output. Looks like:
136 * % gzip -l ../etc.tgz
137 * compressed uncompressed ratio uncompressed_name
138 * 119737 696320 82.8% ../etc.tar
139 */
140
141 asprintf(&cmd, "gzip -l %s", infile);
142 if ((gzipsizepipe = popen(cmd, "r")) == NULL)
143 err(1, "reading compressed file length");
144 for (; fgets(buf, 256, gzipsizepipe) != NULL;)
145 continue;
146 sscanf(buf, "%*d %ld", &size);
147 filesize = size;
148 if (pclose(gzipsizepipe) < 0)
149 err(1, "closing compressed file length pipe");
150 free(cmd);
151 }
152 /* Pipe input through gzip -dc if -z is given */
153 if (zflag) {
154 pid_t gzippid;
155 int gzippipe[2];
156
157 if (pipe(gzippipe) < 0)
158 err(1, "gzip pipe");
159 gzippid = fork();
160 if (gzippid < 0)
161 err(1, "fork for gzip");
162
163 if (gzippid) {
164 /* parent */
165 dup2(gzippipe[0], fd);
166 close(gzippipe[0]);
167 close(gzippipe[1]);
168 } else {
169 dup2(gzippipe[1], STDOUT_FILENO);
170 dup2(fd, STDIN_FILENO);
171 close(gzippipe[0]);
172 close(gzippipe[1]);
173 if (execlp("gzip", "gzip", "-dc", NULL))
174 err(1, "exec()ing gzip");
175 }
176 }
177
178 /* Initialize progressbar.c's global state */
179 bytes = 0;
180 progress = 1;
181 ttyout = stdout;
182 ttywidth = 80;
183
184 if (pipe(outpipe) < 0)
185 err(1, "output pipe");
186 pid = fork();
187 if (pid < 0)
188 err(1, "fork for output pipe");
189
190 if (pid == 0) {
191 /* child */
192 dup2(outpipe[0], STDIN_FILENO);
193 close(outpipe[0]);
194 close(outpipe[1]);
195 execvp(argv[0], argv);
196 err(1, "could not exec %s", argv[0]);
197 }
198 close(outpipe[0]);
199
200 progressmeter(-1);
201 while ((nr = read(fd, fb_buf, BUFSIZ)) > 0)
202 for (off = 0; nr; nr -= nw, off += nw, bytes += nw)
203 if ((nw = write(outpipe[1], &fb_buf + off, (size_t) nr)) < 0)
204 err(1, "writing %d bytes to output pipe", nr);
205 close(outpipe[1]);
206
207 wait(&waitstat);
208
209 progressmeter(1);
210 return 0;
211 }