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/**
* @file maildir-writecache.cc
* @brief Implementation of the Maildir class.
* @author Andreas Aardal Hanssen
* @date 2002-2005
*/
#include "globals.h"
#include "maildir.h"
#include <dirent.h>
#include <fcntl.h>
#include <unistd.h>
bool Binc::Maildir::writeCache(void)
{
if (readOnly) return true;
char *safename = strdup((path + "/.bincimap-cache-tmp-XXXXXX").c_str());
int fd = mkstemp(safename);
if (!fd) {
free(safename);
return false;
}
std::string safeName = safename;
free(safename);
FILE *fp = fdopen(fd, "w");
if (!fp) {
unlink(safeName.c_str());
return false;
}
if (uidvalidity == 0 || uidnext == 0) {
uidvalidity = time(nullptr);
uidnext = messages.size() + 1;
}
fprintf(fp, "%s %u %u\n", BINC_CACHE, uidvalidity, uidnext);
Mailbox::iterator i = begin(SequenceSet::all(), INCLUDE_EXPUNGED);
for (; i != end(); ++i) {
MaildirMessage &message = (MaildirMessage &)*i;
fprintf(fp,
"%u %u %u %s",
message.getUID(),
(unsigned int)message.getInternalDate(),
message.getSize(),
message.getUnique().c_str());
std::vector<std::string> cflags = message.getCustomFlags();
for (const auto &it : cflags)
fprintf(fp, " %s", it.c_str());
fprintf(fp, "\n");
}
if (fflush(fp) || (fsync(fd) && (errno != EROFS || errno != EINVAL)) || fclose(fp)) {
unlink(safeName.c_str());
return false;
}
if (rename(safeName.c_str(), (path + "/bincimap-cache").c_str()) != 0) {
unlink(safeName.c_str());
return false;
}
int dfd = open(path.c_str(), O_RDONLY);
if (dfd == -1 || (fsync(fd) && (errno != EROFS || errno != EINVAL)) || close(dfd))
return false;
return true;
}
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