+// Not in a class due to circular dependancy hell.
+static std::string permchannelsconf;
+static bool WriteDatabase()
+{
+ FILE *f;
+
+ if (permchannelsconf.empty())
+ {
+ // Fake success.
+ return true;
+ }
+
+ std::string tempname = permchannelsconf + ".tmp";
+
+ /*
+ * 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..
+ * -- w00t
+ */
+ f = fopen(tempname.c_str(), "w");
+ if (!f)
+ {
+ ServerInstance->Logs->Log("m_permchannels",DEFAULT, "permchannels: Cannot create database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "database: cannot create new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ fputs("# Permchannels DB\n# This file is autogenerated; any changes will be overwritten!\n<config format=\"compat\">\n", f);
+ // Now, let's write.
+ for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)
+ {
+ Channel* chan = i->second;
+ if (!chan->IsModeSet('P'))
+ continue;
+
+ char line[1024];
+ const char* items[] =
+ {
+ "<permchannels channel=",
+ chan->name.c_str(),
+ " topic=",
+ chan->topic.c_str(),
+ " modes=",
+ chan->ChanModes(true),
+ ">\n"
+ };
+
+ int lpos = 0, item = 0, ipos = 0;
+ while (lpos < 1022 && item < 7)
+ {
+ char c = items[item][ipos++];
+ if (c == 0)
+ {
+ // end of this string; hop to next string, insert a quote
+ item++;
+ ipos = 0;
+ c = '"';
+ }
+ else if (c == '\\' || c == '"')
+ {
+ line[lpos++] = '\\';
+ }
+ line[lpos++] = c;
+ }
+ line[--lpos] = 0;
+ fputs(line, f);
+ }
+
+ int write_error = 0;
+ write_error = ferror(f);
+ write_error |= fclose(f);
+ if (write_error)
+ {
+ ServerInstance->Logs->Log("m_permchannels",DEFAULT, "permchannels: Cannot write to new database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "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(tempname.c_str(), permchannelsconf.c_str()) < 0)
+ {
+ ServerInstance->Logs->Log("m_permchannels",DEFAULT, "permchannels: Cannot move new to old database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "database: cannot replace old with new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ return true;
+}
+
+