+
+ WriteDatabase();
+ }
+
+ bool WriteDatabase()
+ {
+ FILE *f;
+
+ /*
+ * We need to perform an atomic write so as not to fuck things up.
+ * So, let's write to a temporary file, flush and sync the FD, then rename the file..
+ * Technically, that means that this can block, but I have *never* seen that.
+ * -- w00t
+ */
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Opening temporary database");
+ f = fopen("xline.db.new", "w");
+ if (!f)
+ {
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Cannot create database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('x', "database: cannot create new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Opened. Writing..");
+
+ /*
+ * Now, much as I hate writing semi-unportable formats, additional
+ * xline types may not have a conf tag, so let's just write them.
+ * In addition, let's use a file version, so we can maintain some
+ * semblance of backwards compatibility for reading on startup..
+ * -- w00t
+ */
+ fprintf(f, "VERSION 1\n");
+
+ // Now, let's write.
+ XLine *line;
+ for (std::vector<XLine *>::iterator i = xlines.begin(); i != xlines.end(); i++)
+ {
+ line = (*i);
+ fprintf(f, "LINE %s %s %s %lu %lu :%s\n", line->type.c_str(), line->Displayable(),
+ ServerInstance->Config->ServerName, (unsigned long)line->set_time, (unsigned long)line->duration, line->reason);
+ }
+
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Finished writing XLines. Checking for error..");
+
+ int write_error = 0;
+ write_error = ferror(f);
+ write_error |= fclose(f);
+ if (write_error)
+ {
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Cannot write to new database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('x', "database: cannot write to new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ // Use rename to move temporary to new db - this is guarenteed not to fuck up, even in case of a crash.
+ if (rename("xline.db.new", "xline.db") < 0)
+ {
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Cannot move new to old database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('x', "database: cannot replace old with new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ return true;
+ }
+
+ bool ReadDatabase()
+ {
+ FILE *f;
+ char linebuf[MAXBUF];
+ unsigned int lineno = 0;
+
+ f = fopen("xline.db", "r");
+ if (!f)
+ {
+ if (errno == ENOENT)
+ {
+ /* xline.db doesn't exist, fake good return value (we don't care about this) */
+ return true;
+ }
+ else
+ {
+ /* this might be slightly more problematic. */
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Cannot read database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('x', "database: cannot read db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+ }
+
+ while (fgets(linebuf, MAXBUF, f))
+ {
+ char *c = linebuf;
+
+ while (c && *c)
+ {
+ if (*c == '\n')
+ {
+ *c = '\0';
+ }
+
+ c++;
+ }
+ // Smart man might think of initing to 1, and moving this to the bottom. Don't. We use continue in this loop.
+ lineno++;
+
+ // Inspired by the command parser. :)
+ irc::tokenstream tokens(linebuf);
+ int items = 0;
+ std::string command_p[MAXPARAMETERS];
+ std::string tmp;
+
+ while (tokens.GetToken(tmp) && (items < MAXPARAMETERS))
+ {
+ command_p[items] = tmp.c_str();
+ items++;
+ }
+
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Processing %s", linebuf);
+
+ if (command_p[0] == "VERSION")
+ {
+ if (command_p[1] == "1")
+ {
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: Reading db version %s", command_p[1].c_str());
+ }
+ else
+ {
+ fclose(f);
+ ServerInstance->Logs->Log("m_xline_db",DEBUG, "xlinedb: I got database version %s - I don't understand it", command_p[1].c_str());
+ ServerInstance->SNO->WriteToSnoMask('x', "database: I got a database version (%s) I don't understand", command_p[1].c_str());
+ return false;
+ }
+ }
+ else if (command_p[0] == "LINE")
+ {
+ // Mercilessly stolen from spanningtree
+ XLineFactory* xlf = ServerInstance->XLines->GetFactory(command_p[1]);
+
+ if (!xlf)
+ {
+ ServerInstance->SNO->WriteToSnoMask('x', "database: Unknown line type (%s).", command_p[1].c_str());
+ continue;
+ }
+
+ XLine* xl = xlf->Generate(ServerInstance->Time(), atoi(command_p[5].c_str()), command_p[3].c_str(), command_p[6].c_str(), command_p[2].c_str());
+ xl->SetCreateTime(atoi(command_p[4].c_str()));
+
+ if (ServerInstance->XLines->AddLine(xl, NULL))
+ {
+ ServerInstance->SNO->WriteToSnoMask('x', "database: Added a line of type %s", command_p[1].c_str());
+ }
+ }
+ }
+
+ return true;