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httpd: add support for Status: CGI header

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This commit is contained in:
Denis Vlasenko 2007-08-11 20:20:43 +00:00
parent e5d37ccb6e
commit 1ec15cd818
1 changed files with 24 additions and 13 deletions
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37
networking/httpd.c
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@ -1043,9 +1043,9 @@ static int sendCgi(const char *url,
xmove_fd(fromCgi.wr, 1); /* replace stdout with the pipe */
close(fromCgi.rd);
close(toCgi.wr);
/* Huh? User seeing stderr can be a security problem...
* and if CGI really wants that, it can always dup2(1,2)...
* dup2(fromCgi.wr, 2); */
/* Huh? User seeing stderr can be a security problem.
* If CGI really wants that, it can always dup2(1,2). */
/* dup2(1, 2); */
/*
* Find PATH_INFO.
@ -1247,7 +1247,7 @@ static int sendCgi(const char *url,
post_read_idx = 0;
bodyLen -= count;
} else {
bodyLen = 0; /* closed */
bodyLen = 0; /* closed */
}
}
@ -1274,32 +1274,43 @@ static int sendCgi(const char *url,
* CGI may output a few first bytes and then wait
* for POSTDATA without closing stdout.
* With full_read we may wait here forever. */
count = safe_read(inFd, rbuf + buf_count, PIPESIZE - 4);
count = safe_read(inFd, rbuf + buf_count, PIPESIZE - 8);
if (count <= 0) {
/* eof (or error) and there was no "HTTP",
* so add one and write out the received data */
* so write it, then write received data */
if (buf_count) {
full_write(s, HTTP_200, sizeof(HTTP_200)-1);
full_write(s, rbuf, buf_count);
}
break; /* closed */
break; /* closed */
}
buf_count += count;
count = 0;
if (buf_count >= 4) {
/* check to see if CGI added "HTTP" */
/* "Status" header format is: "Status: 302 Redirected\r\n" */
if (buf_count >= 8) {
if (memcmp(rbuf, "Status: ", 8) == 0) {
/* send "HTTP/1.0 " */
if (full_write(s, HTTP_200, 9) != 9)
break;
rbuf += 8; /* skip "Status: " */
count -= 8;
buf_count = -1; /* buffering off */
}
} else if (buf_count >= 4) {
/* Did CGI add "HTTP"? */
if (memcmp(rbuf, HTTP_200, 4) != 0) {
/* there is no "HTTP", do it ourself */
if (full_write(s, HTTP_200, sizeof(HTTP_200)-1) != sizeof(HTTP_200)-1)
break;
}
/* example of valid CGI without "Content-type:"
* echo -en "HTTP/1.0 302 Found\r\n"
* echo -en "Location: http://www.busybox.net\r\n"
* echo -en "\r\n"
/* Commented out:
if (!strstr(rbuf, "ontent-")) {
full_write(s, "Content-type: text/plain\r\n\r\n", 28);
}
* Counter-example of valid CGI without Content-type:
* echo -en "HTTP/1.0 302 Found\r\n"
* echo -en "Location: http://www.busybox.net\r\n"
* echo -en "\r\n"
*/
count = buf_count;
buf_count = -1; /* buffering off */