| /** @file |
| |
| A brief file description |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| /**************************************************************************** |
| |
| Show.h |
| |
| |
| ****************************************************************************/ |
| |
| #ifndef _Show_h_ |
| #define _Show_h_ |
| |
| #include "StatPages.h" |
| |
| #define STREQ_PREFIX(_x,_s) (!strncasecmp(_x,_s,sizeof(_s)-1)) |
| |
| struct ShowCont; |
| typedef int (ShowCont::*ShowContEventHandler) (int event, Event * data); |
| struct ShowCont: public Continuation |
| { |
| Action action; |
| char *buf, *start, *ebuf; |
| int iarg; |
| char *sarg; |
| |
| int show(const char *s, ...) |
| { |
| va_list aap, va_scratch; |
| int l = ebuf - buf; |
| va_start(aap, s); |
| va_copy(va_scratch, aap); |
| int done = vsnprintf(buf, l, s, aap); |
| va_end(va_scratch); |
| if (done > l - 256) |
| { |
| char *start2 = (char *) xrealloc(start, (ebuf - start) * 2); |
| ebuf = start2 + (ebuf - start) * 2; |
| buf = start2 + (buf - start); |
| start = start2; |
| l = ebuf - buf; |
| done = vsnprintf(buf, l, s, aap); |
| if (done > l - 256) |
| { |
| va_end(aap); |
| return EVENT_DONE; |
| } |
| buf += done; |
| } else |
| buf += done; |
| |
| va_end(aap); |
| return EVENT_CONT; |
| } |
| |
| #define CHECK_SHOW(_x) if (_x == EVENT_DONE) return complete_error(event,e); |
| |
| int complete(int event, Event * e) |
| { |
| CHECK_SHOW(show("</BODY>\n</HTML>\n")); |
| if (!action.cancelled) { |
| StatPageData data(start, buf - start); |
| action.continuation->handleEvent(STAT_PAGE_SUCCESS, &data); |
| start = 0; |
| } else { |
| xfree(start); |
| start = NULL; |
| } |
| return done(VIO::CLOSE, event, e); |
| } |
| |
| int complete_error(int event, Event * e) |
| { |
| xfree(start); |
| start = NULL; |
| if (!action.cancelled) |
| action.continuation->handleEvent(STAT_PAGE_FAILURE, NULL); |
| return done(VIO::ABORT, event, e); |
| } |
| |
| int begin(const char *name) |
| { |
| return show("<HTML>\n<HEAD><TITLE>%s</TITLE>\n" |
| "<BODY BGCOLOR=\"#ffffff\" FGCOLOR=\"#00ff00\">\n" "<H1>%s</H1>\n", name, name); |
| } |
| |
| int showError(int event, Event * e) |
| { |
| return complete_error(event, e); |
| } |
| |
| virtual int done(int e, int event, void *data) |
| { |
| NOWARN_UNUSED(e); |
| NOWARN_UNUSED(event); |
| NOWARN_UNUSED(data); |
| if (sarg) { |
| xfree(sarg); |
| sarg = NULL; |
| } |
| delete this; |
| return EVENT_DONE; |
| } |
| |
| ShowCont(Continuation * c, HTTPHdr * h): |
| Continuation(NULL), iarg(0), sarg(0) { |
| NOWARN_UNUSED(h); |
| mutex = c->mutex; |
| action = c; |
| buf = (char *) xmalloc(32000); |
| start = buf; |
| ebuf = buf + 32000; |
| } |
| ~ShowCont() { |
| if (start) |
| xfree(start); |
| } |
| }; |
| |
| |
| #endif |
