int
redirectorStreamHandler1(int status,
FdEventHandlerPtr event,
StreamRequestPtr srequest)
{
RedirectRequestPtr request = (RedirectRequestPtr)srequest->data;
if(status) {
if(status >= 0)
status = -EPIPE;
do_log_error(L_ERROR, -status, "Write to redirector failed");
goto fail;
}
if(!streamRequestDone(srequest))
return 0;
do_stream(IO_READ, redirector_read_fd, 0,
redirector_buffer, REDIRECTOR_BUFFER_SIZE,
redirectorStreamHandler2, request);
return 1;
fail:
request->handler(status < 0 ? status : -EPIPE,
request->url, NULL, NULL, request->data);
redirectorDestroyRequest(request);
redirectorKill();
return 1;
}
void
redirectorTrigger(void)
{
RedirectRequestPtr request = redirector_request_first;
int rc;
if(!request)
return;
if(redirector_read_fd < 0) {
rc = runRedirector(&redirector_pid,
&redirector_read_fd, &redirector_write_fd);
if(rc < 0) {
request->handler(rc, request->url, NULL, NULL, request->data);
redirectorDestroyRequest(request);
return;
}
}
do_stream_2(IO_WRITE, redirector_write_fd, 0,
request->url->string, request->url->length,
"\n", 1,
redirectorStreamHandler1, request);
}
int
redirectorStreamHandler2(int status,
FdEventHandlerPtr event,
StreamRequestPtr srequest)
{
RedirectRequestPtr request = (RedirectRequestPtr)srequest->data;
char *c;
AtomPtr message;
AtomPtr headers;
int code;
if(status < 0) {
do_log_error(L_ERROR, -status, "Read from redirector failed");
request->handler(status, request->url, NULL, NULL, request->data);
goto kill;
}
c = memchr(redirector_buffer, '\n', srequest->offset);
if(!c) {
if(!status && srequest->offset < REDIRECTOR_BUFFER_SIZE)
return 0;
do_log(L_ERROR, "Redirector returned incomplete reply.\n");
request->handler(-EREDIRECTOR, request->url, NULL, NULL, request->data);
goto kill;
}
*c = '\0';
if(srequest->offset > c + 1 - redirector_buffer)
do_log(L_WARN, "Stray bytes in redirector output.\n");
if(c > redirector_buffer + 1 &&
(c - redirector_buffer != request->url->length ||
memcmp(redirector_buffer, request->url->string,
request->url->length) != 0)) {
code = redirectorRedirectCode;
message = internAtom("Redirected by external redirector");
if(message == NULL) {
request->handler(-ENOMEM, request->url, NULL, NULL, request->data);
goto kill;
}
headers = internAtomF("\r\nLocation: %s", redirector_buffer);
if(headers == NULL) {
releaseAtom(message);
request->handler(-ENOMEM, request->url, NULL, NULL, request->data);
goto kill;
}
} else {
code = 0;
message = NULL;
headers = NULL;
}
request->handler(code, request->url,
message, headers, request->data);
goto cont;
cont:
redirectorDestroyRequest(request);
redirectorTrigger();
return 1;
kill:
redirectorKill();
goto cont;
}
int
redirectorStreamHandler2(int status,
FdEventHandlerPtr event,
StreamRequestPtr srequest)
{
RedirectRequestPtr request = (RedirectRequestPtr)srequest->data;
char *c, *c2, *buf;
AtomPtr url = request->url;
AtomPtr message = NULL;
AtomPtr headers = NULL;
int code = 0;
if(status < 0) {
do_log_error(L_ERROR, -status, "Read from redirector failed");
request->handler(status, request->url, NULL, NULL, request->data);
goto kill;
}
c = memchr(redirector_buffer, '\n', srequest->offset);
if(!c) {
if(!status && srequest->offset < REDIRECTOR_BUFFER_SIZE)
return 0;
do_log(L_ERROR, "Redirector returned incomplete reply.\n");
request->handler(-EREDIRECTOR, request->url, NULL, NULL, request->data);
goto kill;
}
c2 = memchr(redirector_buffer, ' ', srequest->offset);
if (c2 != NULL) c = c2;
*c = '\0';
buf = redirector_buffer;
if (digit(buf[0]) && digit(buf[1]) && digit(buf[2]) && buf[3] == ':') {
code = strtol(buf, NULL, 10);
buf += 4;
}
if(c > buf + 1 &&
(c - buf != request->url->length ||
memcmp(buf, request->url->string,
request->url->length) != 0)) {
if (!redirectorIsServerSide || (300 <= code && code <= 399)) {
if (!(300 <= code && code <= 399))
code = redirectorRedirectCode;
message = internAtom("Redirected by external redirector");
if(message == NULL) {
request->handler(-ENOMEM, request->url, NULL, NULL, request->data);
goto kill;
}
headers = internAtomF("\r\nLocation: %s", redirector_buffer);
if(headers == NULL) {
releaseAtom(message);
request->handler(-ENOMEM, request->url, NULL, NULL, request->data);
goto kill;
}
} else {
url = internAtom(buf);
if(url == NULL) {
request->handler(-ENOMEM, request->url, NULL, NULL, request->data);
goto kill;
}
}
}
request->handler(code, url,
message, headers, request->data);
goto cont;
cont:
redirectorDestroyRequest(request);
redirectorTrigger();
return 1;
kill:
redirectorKill();
goto cont;
}
