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00009 #include <ctype.h>
00010 #include <time.h>
00011 #include "wvhttppool.h"
00012 #include "wvbufstream.h"
00013 #include "wvtcp.h"
00014 #include "strutils.h"
00015
00016 bool WvHttpStream::global_enable_pipelining = true;
00017 int WvUrlStream::max_requests = 100;
00018
00019 unsigned WvHash(const WvUrlStream::Target &n)
00020 {
00021 WvString key("%s%s", n.remaddr, n.username);
00022 return (WvHash(key));
00023 }
00024
00025
00026 WvUrlRequest::WvUrlRequest(WvStringParm _url, WvStringParm _method,
00027 WvStringParm _headers, WvStream *content_source,
00028 bool _create_dirs, bool _pipeline_test)
00029 : url(_url), headers(_headers)
00030 {
00031 instream = NULL;
00032 create_dirs = _create_dirs;
00033 pipeline_test = _pipeline_test;
00034 method = _method;
00035 is_dir = false;
00036
00037 if (pipeline_test)
00038 {
00039 outstream = NULL;
00040 putstream = NULL;
00041 }
00042 else
00043 {
00044 WvBufUrlStream *x = new WvBufUrlStream;
00045 outstream = x;
00046 x->death_notify = (WvStream **)&outstream;
00047 x->url = url;
00048
00049 putstream = content_source;
00050 }
00051 inuse = false;
00052 }
00053
00054
00055 WvUrlRequest::~WvUrlRequest()
00056 {
00057 done();
00058 }
00059
00060
00061 void WvUrlRequest::done()
00062 {
00063 if (outstream)
00064 {
00065 outstream->death_notify = NULL;
00066 outstream->seteof();
00067 outstream = NULL;
00068 }
00069 if (putstream)
00070 putstream = NULL;
00071 inuse = false;
00072 }
00073
00074
00075 void WvUrlStream::addurl(WvUrlRequest *url)
00076 {
00077 log(WvLog::Debug4, "Adding a new url: '%s'\n", url->url);
00078
00079 assert(url->outstream);
00080
00081 if (!url->url.isok())
00082 return;
00083
00084 waiting_urls.append(url, false, "waiting_url");
00085 request_next();
00086 }
00087
00088
00089 void WvUrlStream::delurl(WvUrlRequest *url)
00090 {
00091 log(WvLog::Debug4, "Removing an url: '%s'\n", url->url);
00092
00093 if (url == curl)
00094 doneurl();
00095 waiting_urls.unlink(url);
00096 urls.unlink(url);
00097 }
00098
00099
00100 WvHttpPool::WvHttpPool() : log("HTTP Pool", WvLog::Debug), conns(10),
00101 pipeline_incompatible(50)
00102 {
00103 log("Pool initializing.\n");
00104 num_streams_created = 0;
00105 }
00106
00107
00108 WvHttpPool::~WvHttpPool()
00109 {
00110 log("Created %s individual session%s during this run.\n",
00111 num_streams_created, num_streams_created == 1 ? "" : "s");
00112 if (geterr())
00113 log("Error was: %s\n", errstr());
00114
00115
00116
00117 zap();
00118 conns.zap();
00119 }
00120
00121
00122 bool WvHttpPool::pre_select(SelectInfo &si)
00123 {
00124 bool sure = false;
00125
00126 WvUrlStreamDict::Iter ci(conns);
00127 for (ci.rewind(); ci.next(); )
00128 {
00129
00130 if (!ci->isok())
00131 {
00132 unconnect(ci.ptr());
00133 ci.rewind();
00134 log(WvLog::Debug3, "Selecting true because of a dead stream.\n");
00135 sure = true;
00136 }
00137 }
00138
00139
00140
00141
00142 WvUrlRequestList::Iter i(urls);
00143 for (i.rewind(); i.next(); )
00144 {
00145 if ((!i->outstream && !i->inuse) || !i->url.isok())
00146 {
00147
00148
00149 if (!i->url.isok())
00150 {
00151 log("URL not okay: '%s'\n", i->url);
00152 i->done();
00153 }
00154
00155 WvUrlStream::Target target(i->url.getaddr(), i->url.getuser());
00156 WvUrlStream *s = conns[target];
00157 if (s)
00158 s->delurl(i.ptr());
00159 i.xunlink();
00160 continue;
00161 }
00162
00163 if (!i->instream)
00164 {
00165 log(WvLog::Debug4, "Checking dns for '%s'\n", i->url.gethost());
00166 if (i->url.resolve() || dns.pre_select(i->url.gethost(), si))
00167 {
00168 log(WvLog::Debug4, "Selecting true because of '%s'\n", i->url);
00169 sure = true;
00170 }
00171 }
00172 }
00173
00174 if (WvStreamList::pre_select(si))
00175 {
00176
00177 sure = true;
00178 }
00179
00180 return sure;
00181 }
00182
00183
00184 void WvHttpPool::execute()
00185 {
00186 WvStreamList::execute();
00187
00188 WvUrlRequestList::Iter i(urls);
00189 for (i.rewind(); i.next(); )
00190 {
00191 WvUrlStream *s;
00192
00193 if (!i->outstream || !i->url.isok() || !i->url.resolve())
00194 continue;
00195
00196 WvUrlStream::Target target(i->url.getaddr(), i->url.getuser());
00197
00198
00199
00200 s = conns[target];
00201
00202
00203 if (s && !s->isok())
00204 {
00205 unconnect(s);
00206 s = NULL;
00207 }
00208
00209 if (!i->outstream)
00210 continue;
00211
00212 if (!s)
00213 {
00214 num_streams_created++;
00215 if (!strncasecmp(i->url.getproto(), "http", 4))
00216 s = new WvHttpStream(target.remaddr, target.username,
00217 i->url.getproto() == "https",
00218 pipeline_incompatible);
00219 else if (!strcasecmp(i->url.getproto(), "ftp"))
00220 s = new WvFtpStream(target.remaddr, target.username,
00221 i->url.getpassword());
00222 conns.add(s, true);
00223
00224
00225 append(s, false, "http/ftp stream");
00226 }
00227
00228 if (!i->instream)
00229 {
00230 s->addurl(i.ptr());
00231 i->instream = s;
00232 }
00233 }
00234 }
00235
00236
00237 WvBufUrlStream *WvHttpPool::addurl(WvStringParm _url, WvStringParm _method,
00238 WvStringParm _headers, WvStream *content_source, bool create_dirs)
00239 {
00240 log(WvLog::Debug4, "Adding a new url to pool: '%s'\n", _url);
00241 WvUrlRequest *url = new WvUrlRequest(_url, _method, _headers, content_source,
00242 create_dirs, false);
00243 urls.append(url, true, "addurl");
00244
00245 return url->outstream;
00246 }
00247
00248
00249 void WvHttpPool::unconnect(WvUrlStream *s)
00250 {
00251 if (!s->target.username)
00252 log("Unconnecting stream to %s.\n", s->target.remaddr);
00253 else
00254 log("Unconnecting stream to %s@%s.\n", s->target.username,
00255 s->target.remaddr);
00256
00257 WvUrlRequestList::Iter i(urls);
00258 for (i.rewind(); i.next(); )
00259 {
00260 if (i->instream == s)
00261 i->instream = NULL;
00262 }
00263
00264 unlink(s);
00265 conns.remove(s);
00266 }