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Conflicts: docs/PreReleaseNotes.txt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| //---------------------------------------------------------------------------------- | ||
| // Copyright (c) 2015 by Board of Trustees of the Leland Stanford, Jr., University | ||
| // Author: Alja Mrak-Tadel, Matevz Tadel, Brian Bockelman | ||
| //---------------------------------------------------------------------------------- | ||
| // XRootD is free software: you can redistribute it and/or modify | ||
| // it under the terms of the GNU Lesser General Public License as published by | ||
| // the Free Software Foundation, either version 3 of the License, or | ||
| // (at your option) any later version. | ||
| // | ||
| // XRootD is distributed in the hope that it will be useful, | ||
| // but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| // GNU General Public License for more details. | ||
| // | ||
| // You should have received a copy of the GNU Lesser General Public License | ||
| // along with XRootD. If not, see <http://www.gnu.org/licenses/>. | ||
| //---------------------------------------------------------------------------------- | ||
|
|
||
| #include "XrdFileCacheDecision.hh" | ||
| #include "XrdSys/XrdSysError.hh" | ||
|
|
||
| #include <vector> | ||
| #include <fcntl.h> | ||
| #include <stdio.h> | ||
| #include <fnmatch.h> | ||
|
|
||
| class BlacklistDecision : public XrdFileCache::Decision | ||
| { | ||
| //---------------------------------------------------------------------------- | ||
| //! A decision library that allows all files to be cached except for a blacklist | ||
| //---------------------------------------------------------------------------- | ||
|
|
||
| public: | ||
| virtual bool Decide(const std::string & url, XrdOss &) const | ||
| { | ||
| size_t slashslash = url.find("//"); | ||
| const char *fname = url.c_str(); | ||
| if (slashslash != std::string::npos) | ||
| { | ||
| fname += slashslash+2; | ||
| fname = strchr(fname, '/'); | ||
| if (!fname) {return true;} | ||
| } | ||
| std::string url_path = fname; | ||
| size_t question = url_path.find("?"); | ||
| if (question != std::string::npos) | ||
| { | ||
| url_path[question] = '\0'; | ||
| fname = url_path.c_str(); | ||
| } | ||
| if ((strlen(fname) > 1) && (fname[0] == '/') && (fname[1] == '/')) | ||
| { | ||
| fname++; | ||
| } | ||
| //m_log.Emsg("BlacklistDecide", "Deciding whether to cache file", fname); | ||
| for (std::vector<std::string>::const_iterator it = m_blacklist.begin(); it != m_blacklist.end(); it++) | ||
| { | ||
| if (!fnmatch(it->c_str(), fname, FNM_PATHNAME)) | ||
| { | ||
| //m_log.Emsg("BlacklistDecide", "Not caching file as it matches blacklist entry", it->c_str()); | ||
| return false; | ||
| } | ||
| } | ||
| //m_log.Emsg("BlacklistDecide", "Caching file", fname); | ||
| return true; | ||
| } | ||
|
|
||
| BlacklistDecision(XrdSysError &log) | ||
| : m_log(log) | ||
| { | ||
| } | ||
|
|
||
| virtual bool ConfigDecision(const char * parms) | ||
| { | ||
| if (!parms || !parms[0] || (strlen(parms) == 0)) | ||
| { | ||
| m_log.Emsg("ConfigDecision", "Blacklist file not specified."); | ||
| return false; | ||
| } | ||
| m_log.Emsg("ConfigDecision", "Using blacklist", parms); | ||
| FILE * fp = fopen(parms, "r"); | ||
| if (fp == 0) | ||
| { | ||
| m_log.Emsg("ConfigDecision", errno, "Failed to open blacklist:", parms); | ||
| return false; | ||
| } | ||
|
|
||
| ssize_t read; | ||
| size_t len =0; | ||
| char *line = NULL; | ||
| while (-1 != (read=getline(&line, &len, fp))) | ||
| { | ||
| char *trimmed = line; | ||
| while (trimmed[0] && isspace(trimmed[0])) {trimmed++;} | ||
| if (trimmed[0] == 0) {continue;} | ||
| size_t filelen = strlen(trimmed); | ||
| if (trimmed[filelen-1] == '\n') {trimmed[filelen-1] = '\0';} | ||
| m_blacklist.push_back(trimmed); | ||
| } | ||
| free(line); | ||
| fclose(fp); | ||
| if (!feof(fp)) | ||
| { | ||
| m_log.Emsg("ConfigDecision", errno, "Failed to parse blacklist"); | ||
| } | ||
| for (std::vector<std::string>::const_iterator it=m_blacklist.begin(); it!=m_blacklist.end(); it++) | ||
| { | ||
| m_log.Emsg("ConfigDecision", "Cache is blacklisting paths matching", it->c_str()); | ||
| } | ||
| return true; | ||
| } | ||
|
|
||
| private: | ||
| std::vector<std::string> m_blacklist; | ||
| XrdSysError &m_log; | ||
| }; | ||
|
|
||
| /******************************************************************************/ | ||
| /* XrdFileCacheGetDecision */ | ||
| /******************************************************************************/ | ||
|
|
||
| // Return a decision object to use. | ||
| extern "C" | ||
| { | ||
| XrdFileCache::Decision *XrdFileCacheGetDecision(XrdSysError &err) | ||
| { | ||
| return new BlacklistDecision(err); | ||
| } | ||
| } | ||
|
|
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