1 /* Example of how to use webfs */
2 #include <u.h>
3 #include <libc.h>
4
5 void
xfer(int from,int to)6 xfer(int from, int to)
7 {
8 char buf[12*1024];
9 int n;
10
11 while((n = read(from, buf, sizeof buf)) > 0)
12 if(write(to, buf, n) < 0)
13 sysfatal("write failed: %r");
14 if(n < 0)
15 sysfatal("read failed: %r");
16 }
17
18 void
usage(void)19 usage(void)
20 {
21 fprint(2, "usage: webfsget [-b baseurl] [-m mtpt] [-p postbody] url\n");
22 exits("usage");
23 }
24
25 void
main(int argc,char ** argv)26 main(int argc, char **argv)
27 {
28 int conn, ctlfd, fd, n;
29 char buf[128], *base, *mtpt, *post, *url;
30
31 mtpt = "/mnt/web";
32 post = nil;
33 base = nil;
34 ARGBEGIN{
35 default:
36 usage();
37 case 'b':
38 base = EARGF(usage());
39 break;
40 case 'm':
41 mtpt = EARGF(usage());
42 break;
43 case 'p':
44 post = EARGF(usage());
45 break;
46 }ARGEND;
47
48 if (argc != 1)
49 usage();
50
51 url = argv[0];
52
53 snprint(buf, sizeof buf, "%s/clone", mtpt);
54 if((ctlfd = open(buf, ORDWR)) < 0)
55 sysfatal("couldn't open %s: %r", buf);
56 if((n = read(ctlfd, buf, sizeof buf-1)) < 0)
57 sysfatal("reading clone: %r");
58 if(n == 0)
59 sysfatal("short read on clone");
60 buf[n] = '\0';
61 conn = atoi(buf);
62
63 if(base)
64 if(fprint(ctlfd, "baseurl %s", base) < 0)
65 sysfatal("baseurl ctl write: %r");
66
67 if(fprint(ctlfd, "url %s", url) <= 0)
68 sysfatal("get ctl write: %r");
69
70 if(post){
71 snprint(buf, sizeof buf, "%s/%d/postbody", mtpt, conn);
72 if((fd = open(buf, OWRITE)) < 0)
73 sysfatal("open %s: %r", buf);
74 if(write(fd, post, strlen(post)) < 0)
75 sysfatal("post write failed: %r");
76 close(fd);
77 }
78
79 snprint(buf, sizeof buf, "%s/%d/body", mtpt, conn);
80 if((fd = open(buf, OREAD)) < 0)
81 sysfatal("open %s: %r", buf);
82
83 xfer(fd, 1);
84 exits(nil);
85 }
86