boinc/sched/sched_files.cpp

88 lines
2.8 KiB
C++

// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2023 University of California
//
// BOINC 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.
//
// BOINC 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
// functions for initiating deletion of sticky files on clients.
// The project can supply a file "file_delete_regex"
// which is a list of regular expressions for names of files to be deleted.
#include <regex.h>
#include <stdio.h>
#include <vector>
#include <string>
#include "sched_config.h"
#include "sched_msgs.h"
#include "sched_types.h"
#include "str_util.h"
#include "sched_files.h"
using std::vector;
using std::string;
vector<regex_t> file_delete_regex;
vector<string> file_delete_regex_string;
int init_file_delete_regex() {
char buf[256];
FILE* f = boinc::fopen("../file_delete_regex", "r");
if (!f) return 0;
while (boinc::fgets(buf, sizeof(buf), f)) {
strip_whitespace(buf);
if (!strlen(buf)) continue;
regex_t re;
if (regcomp(&re, buf, REG_EXTENDED|REG_NOSUB)) {
log_messages.printf(MSG_CRITICAL,
"invalid regular expression in file_delete_regex: %s\n", buf
);
} else {
file_delete_regex.push_back(re);
file_delete_regex_string.push_back(string(buf));
}
}
boinc::fclose(f);
return 0;
}
int do_file_delete_regex() {
for (unsigned int i=0; i<g_request->file_infos.size(); i++) {
FILE_INFO& fi = g_request->file_infos[i];
bool found = false;
for (unsigned int j=0; j<file_delete_regex.size(); j++) {
regex_t& re = file_delete_regex[j];
if (!regexec(&re, fi.name, 0, NULL, 0)) {
g_reply->file_deletes.push_back(fi);
if (config.debug_client_files) {
log_messages.printf(MSG_NORMAL,
"[client_files] Sticky file %s matched regex %s; deleting\n",
fi.name, file_delete_regex_string[j].c_str()
);
}
found = true;
break;
}
}
if (config.debug_client_files && !found) {
log_messages.printf(MSG_NORMAL,
"[client_files] Sticky file %s didn't match any regex\n", fi.name
);
}
}
return 0;
}