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- #include <u.h>
- #include <libc.h>
- #include <bin.h>
- #include <httpd.h>
- int
- hredirected(HConnect *c, char *how, char *uri)
- {
- Hio *hout;
- char *s, *ss, *scheme, *host;
- char sayport[NETPATHLEN];
- int n;
- scheme = c->scheme? c->scheme: "http";
- host = c->head.host;
- if(strchr(uri, ':') != nil)
- host = "";
- else if(uri[0] != '/'){
- s = strrchr(c->req.uri, '/');
- if(s != nil)
- *s = '\0';
- ss = halloc(c, strlen(c->req.uri) + strlen(uri) + 2 + UTFmax);
- sprint(ss, "%s/%s", c->req.uri, uri);
- uri = ss;
- if(s != nil)
- *s = '/';
- }
- if((strcmp(scheme, "http") == 0 && atoi(c->port) == 80) ||
- (strcmp(scheme, "https") == 0 && atoi(c->port) == 443) ||
- strchr(host, ':') != nil)
- sayport[0] = '\0';
- else
- snprint(sayport, sizeof sayport, ":%s", c->port);
- n = snprint(c->xferbuf, HBufSize,
- "<head><title>Redirection</title></head>\r\n"
- "<body><h1>Redirection</h1>\r\n"
- "Your selection can be found <a href=\"%U\"> here</a>.<p></body>\r\n", uri);
- hout = &c->hout;
- hprint(hout, "%s %s\r\n", hversion, how);
- hprint(hout, "Date: %D\r\n", time(nil));
- hprint(hout, "Server: Plan9\r\n");
- hprint(hout, "Content-type: text/html\r\n");
- hprint(hout, "Content-Length: %d\r\n", n);
- if(host == nil || host[0] == 0)
- hprint(hout, "Location: %U\r\n", uri);
- else
- hprint(hout, "Location: %s://%U%s%U\r\n",
- scheme, host, sayport, uri);
- if(c->head.closeit)
- hprint(hout, "Connection: close\r\n");
- else if(!http11(c))
- hprint(hout, "Connection: Keep-Alive\r\n");
- hprint(hout, "\r\n");
- if(strcmp(c->req.meth, "HEAD") != 0)
- hwrite(hout, c->xferbuf, n);
- if(c->replog)
- if(host == nil || host[0] == 0)
- c->replog(c, "Reply: %s\nRedirect: %U\n", how, uri);
- else
- c->replog(c, "Reply: %s\nRedirect: %s://%U%s%U\n",
- how, scheme, host, sayport, uri);
- return hflush(hout);
- }
- int
- hmoved(HConnect *c, char *uri)
- {
- return hredirected(c, "301 Moved Permanently", uri);
- }
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