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/**
* @file maildir-readcache.cc
* @brief Implementation of the Maildir class.
* @author Andreas Aardal Hanssen
* @date 2002-2005
*/
#include "convert.h"
#include "globals.h"
#include "maildir.h"
#include <algorithm>
using namespace Binc;
using std::string;
using std::vector;
Maildir::ReadCacheResult Maildir::readCache(void)
{
index.clearUids();
const string cachefilename = path + "/bincimap-cache";
FILE *fp = fopen(cachefilename.c_str(), "r");
if (!fp) {
uidvalidity = time(nullptr);
uidnext = 1;
messages.clear();
index.clear();
newMessages.clear();
return NoCache;
}
char inputBuffer[512];
if (!fgets(inputBuffer, sizeof(inputBuffer), fp)) {
fclose(fp);
uidvalidity = time(nullptr);
uidnext = 1;
messages.clear();
index.clear();
newMessages.clear();
return NoCache;
}
// terminate the buffer
inputBuffer[sizeof(inputBuffer) - 1] = '\0';
char cacheFileVersionBuffer[512];
unsigned int readUidValidity;
unsigned int readUidNext;
if (sscanf(inputBuffer, "%s %u %u", cacheFileVersionBuffer, &readUidValidity, &readUidNext)
!= 3
|| strcmp(cacheFileVersionBuffer, BINC_CACHE) != 0)
{
// bump cache
fclose(fp);
uidvalidity = time(nullptr);
uidnext = 1;
messages.clear();
index.clear();
newMessages.clear();
return NoCache;
}
uidnext = readUidNext;
uidvalidity = readUidValidity;
unsigned int readUID;
unsigned int readSize;
unsigned int readInternalDate;
char readUnique[512];
while (fgets(inputBuffer, sizeof(inputBuffer), fp)) {
inputBuffer[sizeof(inputBuffer) - 1] = '\0';
if (sscanf(inputBuffer, "%u %u %u %s", &readUID, &readInternalDate, &readSize, readUnique)
!= 4)
{
// error in input
fclose(fp);
uidvalidity = time(nullptr);
uidnext = 1;
messages.clear();
index.clear();
newMessages.clear();
return NoCache;
}
vector<string> customFlags;
char *flagStart = inputBuffer;
for (int i = 0; flagStart != nullptr && *flagStart != '\0' && i < 4; ++i) {
flagStart = strchr(flagStart, ' ');
// skip consecutive white space
while (flagStart && *flagStart == ' ')
++flagStart;
}
// get flags
while (flagStart) {
char *lastOffset = flagStart;
flagStart = strchr(flagStart, ' ');
if (flagStart) {
*flagStart = '\0';
++flagStart;
}
customFlags.push_back(lastOffset);
// skip consecutive white space
while (flagStart && *flagStart != '\0' && *flagStart == ' ')
++flagStart;
}
MaildirMessage m(*this);
m.setUnique(readUnique);
m.setInternalDate(readInternalDate);
if (index.find(readUnique) == nullptr) {
for (auto tmpFlag : customFlags) {
trim(tmpFlag, " \n");
m.setCustomFlag(tmpFlag);
}
m.setUID(readUID);
m.setInternalFlag(MaildirMessage::JustArrived);
m.setSize(readSize);
add(m);
} else {
// Remember to insert the uid of the message again - we reset this
// at the top of this function.
index.insert(readUnique, readUID);
MaildirMessage &existingMessage = messages.find(readUID)->second;
vector<string> oldCustomFlags = existingMessage.getCustomFlags();
sort(oldCustomFlags.begin(), oldCustomFlags.end());
sort(customFlags.begin(), customFlags.end());
if (oldCustomFlags != customFlags) {
existingMessage.resetCustomFlags();
for (auto tmpFlag : customFlags) {
trim(tmpFlag, " \n");
existingMessage.setCustomFlag(tmpFlag);
}
}
}
}
fclose(fp);
return Ok;
}
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