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filehandling.c
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filehandling.c
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/***
Copyright 2010-2021 by Omar Alejandro Herrera Reyna
Caume Data Security Engine, also known as CaumeDSE is released under the
GNU General Public License by the Copyright holder, with the additional
exemption that compiling, linking, and/or using OpenSSL is allowed.
LICENSE
This file is part of Caume Data Security Engine, also called CaumeDSE.
CaumeDSE is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
CaumeDSE 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with CaumeDSE. If not, see <http://www.gnu.org/licenses/>.
INCLUDED SOFTWARE
This product includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit (http://www.openssl.org/).
This product includes cryptographic software written by
Eric Young ([email protected]).
This product includes software written by
Tim Hudson ([email protected]).
This product includes software from the SQLite library that is in
the public domain (http://www.sqlite.org/copyright.html).
This product includes software from the GNU Libmicrohttpd project, Copyright
© 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
2008, 2009, 2010 , 2011, 2012 Free Software Foundation, Inc.
This product includes software from Perl5, which is Copyright (C) 1993-2005,
by Larry Wall and others.
***/
#include "common.h"
int cmeDirectoryExists (const char *dirPath)
{
DIR *dp;
/**TODO (ANY#6#): Add wrappers for corresponding Cloud Storage.
0=local filesystem, 1=GoGrid, 2=RackSpace, 3=AmazonS3,...
**/
if (cmeStorageProvider==0) //Handle common
{
if ((dp = opendir(dirPath)) == NULL)
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeDirectoryExists(), Error, directory %s doesn't exist,"
"used %d cloud storage definition!\n",dirPath,cmeStorageProvider);
#endif
return(1);
}
}
return(0);
}
int cmeCSVFileRowsToMemTable (const char *fName, char ***elements, int *numCols,
int *processedRows, int hasColNames, int rowStart, int rowEnd)
{
int cont,cont2,cont3;
int elemCont=0;
int rowCont=0;
int flag=0;
int fpEOF=0;
FILE *fp=NULL;
char **colNames=NULL;
char *resStr=NULL;
char defaultColName []="Column_";
char curElement[cmeMaxCSVElemSize];
char curRow[cmeMaxCSVRowSize]; // TODO (OHR#2#): Change to a dynamic memory method to be more efficient and avoid overflows with big tables
if(rowEnd<rowStart) //Error, incorrect start/end row; Rows are inclusive, starting from row 0
//i.e., if rowEnd==rowStart, then that row (one only) is read.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileRowsToMem(), Error end row to be read"
" %d, is smaller than starting row %d !\n",rowEnd,rowStart);
#endif
return(1);
}
memset(curRow,0,cmeMaxCSVRowSize);
fp=fopen(fName,"r");
if(!fp)
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileRowsToMem(), fopen() Error, can't "
"open CSV file: %s !\n",fName);
#endif
return(2);
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeCSVFileRowsToMem(), fopen(), CSV file "
"%s opened for reading.\n",fName);
#endif
resStr=fgets(curRow,cmeMaxCSVRowSize,fp);
cont=0;
cont2=1;
do //Get # of columns
{
if (curRow[cont]==',')
{
cont2++;
}
else if (curRow[cont]=='\"')
{
do
{
cont++;
}while ((cont<(int)strlen(curRow))&&(curRow[cont]!='\"'));
if (cont>=(int)strlen(curRow)) //Error, quoted element not closed
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileRowsToMem(), Error, quoted "
"element not closed at first row, in CSV file: %s !\n",fName);
#endif
fclose(fp);
return (3);
}
}
cont++;
}while (cont<(int)strlen(curRow));
*numCols=cont2;
colNames=(char **)malloc(sizeof(char **) * (*numCols)); //reserve memory for column name pointers
*elements=(char **)malloc(sizeof(char **) * (*numCols) *
(rowEnd-rowStart+2)); //reserve memory for element pointers
rowEnd++; //increment to include header row.
rowStart++;
if (hasColNames) //get Column names from first row first if CSV contains headers in 1st row.
{
if (resStr==NULL) //Error or EOF
{
if (feof(fp)==0) // Error
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileRowsToMem(), fgets() Error, can't "
"read CSV file: %s!\n",fName);
#endif
fclose(fp);
return (4);
}
else //EOF
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileRowsToMem(), fgets() Error, reached "
"EOF prematurely (before getting # of columns), in CSV file: %s!\n",fName);
#endif
fclose(fp);
return(5);
}
}
else //No error, then process column names
{
flag=1;
cont=0;
cont2=0;
cont3=0;
while(flag)
{
cont2=0;
if (curRow[cont]=='\"') //parse quoted element
{
cont++;
while ((curRow[cont]!='\"')&&(cont<(int)strlen(curRow)))
{
curElement[cont2]=curRow[cont];
cont2++;
cont++;
}
if (curRow[cont]!='\"') //error, quoted element not closed
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileToMem(), Error, quoted "
"element not closed at first row (column names), in CSV file: "
" %s !\n",fName);
#endif
fclose(fp);
return(6);
}
else
{
curElement[cont2]='\0';
colNames[cont3]=(char *)malloc(sizeof(char) * (cont2+1)); //reserve memory for column name
memcpy(colNames[cont3],curElement,cont2+1);
cont3++;
while ((curRow[cont]!=',')&&(cont<(int)strlen(curRow))) //Skip to next element
{
cont++;
}
cont++; //go one character after the comma.
}
}
else //parse normal element
{
while ((curRow[cont]!=',')&&(cont<(int)strlen(curRow))&&
(curRow[cont]!='\n')&&(curRow[cont]!='\r'))
{
curElement[cont2]=curRow[cont];
cont2++;
cont++;
}
curElement[cont2]='\0';
colNames[cont3]=(char *)malloc(sizeof(char) * (cont2+1)); //reserve memory for column name
memcpy(colNames[cont3],curElement,cont2+1);
cont3++;
while ((curRow[cont]!=',')&&(cont<(int)strlen(curRow))) //Skip to next element
{
cont++;
}
cont++; //go one character after the comma.
}
if (cont>=(int)strlen(curRow)) //End cycle if end of string has been reached
{
flag=0;
}
}
}
}
else //If CSV file has NO column headers at first row...
{
fseek(fp,0,SEEK_SET); //Rewind to start of file first.
for (cont3=0;cont3<*numCols;cont3++) //Fill in generic names.
{
colNames[cont3]=(char *)malloc(sizeof(char) * cmeMaxCSVDefaultColNameSize); //reserve memory for column name
strcpy(colNames[cont3],defaultColName);
sprintf((colNames[cont3])+7,"%d",cont3);
}
}
for (rowCont=1;rowCont<rowStart;rowCont++) //Skip to starting row.
{
resStr=fgets(curRow,cmeMaxCSVRowSize,fp);
if (feof(fp)) //End of File
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileToMem(), fgets() Error, reached "
"EOF prematurely (before getting to starting row), in CSV file: %s!\n",fName);
#endif
fclose(fp);
return(7);
}
}
*processedRows=0; //Reset counter for number of processed rows.
elemCont=0; //Reset element counter
for (cont=0;cont<*numCols; cont++) //Add column names to table of elements (1st row).
{
(*elements)[cont]=NULL;
cmeStrConstrAppend(&((*elements)[cont]),"%s",colNames[cont]);
//memcpy((*elements)[elemCont],colNames[cont],strlen(colNames[cont]));
elemCont++;
}
for (cont=0; cont<*numCols; cont++) //Free column names.
{
cmeFree(colNames[cont]);
}
cmeFree(colNames);
fpEOF=0;
while ((rowCont<=rowEnd)&&(!fpEOF)) //Process each row.
{
cont=0;
cont2=0;
resStr=fgets(curRow,cmeMaxCSVRowSize,fp); //Read one row.
rowCont++;
if (resStr==NULL) //Error or EOF
{
if (feof(fp)==0) // Error
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileToMem(), fgets() Error, can't "
"read CSV file: %s!\n",fName);
#endif
fclose(fp);
return (8);
}
else //EOF
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeCSVFileToMem(), fgets() EOF reached "
"prematurely (before getting to end Row), in CSV file: %s!\n",fName);
#endif
fpEOF=1;
}
}
else
{
flag=1;
while(flag) //Process current row
{
cont2=0;
if (curRow[cont]=='\"') //parse quoted element
{
cont++;
while ((curRow[cont]!='\"')&&(cont<(int)strlen(curRow)))
{
curElement[cont2]=curRow[cont];
cont2++;
cont++;
}
if (curRow[cont]!='\"') //error, quoted element not closed
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCSVFileToMem(), Error, quoted "
"element not closed at processed row %d, in CSV file: "
"%s !\n",*processedRows,fName);
#endif
fclose(fp);
return(9);
}
else
{
curElement[cont2]='\0';
(*elements)[elemCont]=(char *)malloc(sizeof(char) *
(cont2+1)); //reserve memory for element
memcpy((*elements)[elemCont],curElement,cont2+1);
elemCont++;
while ((curRow[cont]!=',')&&(cont<(int)strlen(curRow))) //Skip to next element
{
cont++;
}
cont++; //go one character after the comma.
}
}
else //parse normal element
{
while ((curRow[cont]!=',')&&(cont<(int)strlen(curRow))&&
(curRow[cont]!='\n')&&(curRow[cont]!='\r'))
{
curElement[cont2]=curRow[cont];
cont2++;
cont++;
}
curElement[cont2]='\0';
(*elements)[elemCont]=(char *)malloc(sizeof(char) * (cont2+1)); //reserve memory for element
memcpy((*elements)[elemCont],curElement,cont2+1);
elemCont++;
while ((curRow[cont]!=',')&&(cont<(int)strlen(curRow))) //Skip to next element
{
cont++;
}
cont++; //go one character after the comma.
}
if (cont>=(int)strlen(curRow)) //End cycle, if end of string has been reached
{
flag=0;
}
}
(*processedRows)++;
}
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeCSVFileToMem(), processed %d rows "
"(not counting header row, if required), from CSV file: %s!\n",*processedRows,fName);
#endif
fclose(fp);
return (0);
}
int cmeCSVFileRowsToMemTableFinal (char ***elements, int numCols,int processedRows)
{
int cont,cont2;
for (cont2=0; cont2<processedRows; cont2++) //Free elements.
{
for (cont=0; cont<numCols; cont++)
{
cmeFree ((*elements)[cont+(cont2*numCols)]);
}
}
cmeFree(*elements);
return(0);
}
int cmeLoadStrFromFile (char **pDstStr, const char *filePath, int *dstStrLen)
{
int fileLen,readBytes;
FILE *fp=NULL;
fp=fopen(filePath,"r");
if(!fp) //Error
{
#ifdef ERROR_LOG
fprintf(stdout,"CaumeDSE Error: cmeLoadStrFromFile(), can't open file %s for reading!\n",filePath);
#endif
return(1);
}
fseek(fp,0L,SEEK_END);
fileLen=ftell(fp);
rewind(fp);
*pDstStr=(char *)malloc(sizeof(char)*(fileLen+1)); //Note that caller must free *pDstStr!
if (!pDstStr) //Error
{
#ifdef ERROR_LOG
fprintf(stdout,"CaumeDSE Error: cmeLoadStrFromFile(), can't malloc() memory to read file %s, of length %d !\n",
filePath,fileLen);
#endif
fclose(fp);
return(2);
}
readBytes=fread(*pDstStr,1,fileLen,fp);
fclose(fp);
*dstStrLen=readBytes;
if (fileLen!=readBytes) //Error
{
#ifdef ERROR_LOG
fprintf(stdout,"CaumeDSE Error: cmeLoadStrFromFile(), read only %d bytes of %d from file %s!\n",
readBytes,fileLen,filePath);
#endif
return(3);
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeLoadStrFromFile(), read %d bytes from file %s, of length %d.\n",
readBytes,filePath,fileLen);
#endif
return(0);
}
int cmeWriteStrToFile (char *pSrcStr, const char *filePath, int srcStrLen)
{
int written;
FILE *fp=NULL;
fp=fopen(filePath,"w");
if(!fp) //Error
{
#ifdef ERROR_LOG
fprintf(stdout,"CaumeDSE Error: cmeWriteStrToFile(), can't open file %s for writing!\n",filePath);
#endif
return(1);
}
if (!pSrcStr) //Error
{
#ifdef ERROR_LOG
fprintf(stdout,"CaumeDSE Error: cmeWriteStrToFile(), pointer to src string is NULL!\n");
#endif
fclose(fp);
return(2);
}
written=fwrite (pSrcStr,1,srcStrLen,fp);
fclose(fp);
if (srcStrLen!=written) //Error
{
#ifdef ERROR_LOG
fprintf(stdout,"CaumeDSE Error: cmeWriteStrToFile(), wrote only %d bytes of %d to file %s!\n",
written,srcStrLen,filePath);
#endif
return(3);
}
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeWriteStrToFile(), wrote %d bytes to file %s, from srcStr of length %d.\n",
written,filePath,srcStrLen);
#endif
return(0);
}
int cmeCSVFileToSecureDB (const char *CSVfName,const int hasColNames,int *numCols,int *processedRows,
const char *userId,const char *orgId,const char *orgKey, const char **attribute,
const char **attributeData, const int numAttribute,const int replaceDB,
const char *resourceInfo, const char *documentType, const char *documentId,
const char *storageId, const char *storagePath)
{
int cont,cont2,cont3,rContLimit,result,readBytes,written;
int numEntries=0;
int totalParts=0;
int rowStart=0;
int numSQLDBfNames=0; //with column slicing this will be (*numcols)*((((*processedRows)/cmeMaxCSVRowsInPart))+(((*processedRows)%cmeMaxCSVRowsInPart > 0)? 1 : 0 ))
int cycleProcessedRows=0;
int rowEnd=cmeCSVRowBuffer-1;
sqlite3 **ppDB=NULL;
sqlite3 *resourcesDB=NULL;
char **elements=NULL; //Note: elements will be freed via the special function cmeCSVFileRowsToMemTableFinal() within the corresponding loop; it is not included in cmeCSVFileToSecureDBFree()
char **SQLDBfNames=NULL; //Will hold the name of each file part.
char **SQLDBfMACs=NULL; //Will hold the MAC of each file part.
char **SQLDBfSalts=NULL; //Will hold the salt of each file part.
char **colNames=NULL;
char *currentRawFileContent=NULL; //Will hold the binary contents of each created file part during the hashing process.
char *resourcesDBName=NULL;
char *sqlQuery=NULL;
char *value=NULL; //Just a pointer to elements within elements[]. No need to free.
char *bkpFName=NULL;
char *securedRowOrder=NULL;
char *securedValue=NULL;
char *MAC=NULL; //'data' table values depending on attributes selected.
char *salt=NULL;
char *MACProtected=NULL;
char *sign=NULL;
char *signProtected=NULL;
char *otphDkey=NULL;
char *sanitizedStr=NULL;
const char *nullParam="";
const char resourcesDBFName[]="ResourcesDB";
#define cmeCSVFileToSecureDBFree() \
do { \
cmeFree(resourcesDBName); \
cmeFree(sqlQuery); \
cmeFree(bkpFName); \
cmeFree(securedRowOrder); \
cmeFree(securedValue); \
cmeFree(MAC); \
cmeFree(salt); \
cmeFree(MACProtected); \
cmeFree(sign); \
cmeFree(signProtected); \
cmeFree(otphDkey); \
cmeFree(currentRawFileContent); \
cmeFree(sanitizedStr); \
if (resourcesDB) \
{ \
cmeDBClose(resourcesDB); \
resourcesDB=NULL; \
} \
if (ppDB) \
{ \
for (cont=0;cont<(*numCols);cont++) \
{ \
cmeDBClose(ppDB[cont]); \
ppDB[cont]=NULL; \
} \
cmeFree(ppDB); \
} \
if (SQLDBfNames) \
{ \
for (cont=0;cont<numSQLDBfNames;cont++) \
{ \
cmeFree(SQLDBfNames[cont]); \
} \
cmeFree(SQLDBfNames); \
} \
if (SQLDBfMACs) \
{ \
for (cont=0;cont<numSQLDBfNames;cont++) \
{ \
cmeFree(SQLDBfMACs[cont]); \
} \
cmeFree(SQLDBfMACs); \
} \
if (SQLDBfSalts) \
{ \
for (cont=0;cont<numSQLDBfNames;cont++) \
{ \
cmeFree(SQLDBfSalts[cont]); \
} \
cmeFree(SQLDBfSalts); \
} \
if (colNames) \
{ \
for (cont=0;cont<(*numCols);cont++) \
{ \
cmeFree(colNames[cont]); \
} \
cmeFree(colNames); \
} \
} while (0); //Local free() macro.
cmeStrConstrAppend(&resourcesDBName,"%s%s",cmeDefaultFilePath,resourcesDBFName);
result=cmeDBOpen(resourcesDBName,&resourcesDB);
if (result) //Error
{
cmeCSVFileToSecureDBFree();
return(1);
}
result=cmeExistsDocumentId(resourcesDB,documentId,orgKey,&numEntries);
if (numEntries>0) //We have the same documentId already in the database...
{
#ifdef DEBUG
fprintf(stdout,"CaumeDSE Debug: cmeCVSFileToSecureDB(), documentId %s already exists; "
"replace instruction: %d\n",documentId,replaceDB);
#endif
if (!replaceDB)
{
cmeCSVFileToSecureDBFree();
return(3);
}
else //delete old secureDB first, and then replace
{
result=cmeDeleteSecureDB(resourcesDB,documentId,orgKey,storagePath);
}
}
cmeDBClose(resourcesDB);
resourcesDB=NULL;
*numCols=0; //Set default results
*processedRows=0;
do
{
result=cmeCSVFileRowsToMemTable(CSVfName, &elements, numCols, &cycleProcessedRows, hasColNames, rowStart, rowEnd);
if(result) //Error
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureDB(), cmeCSVFileRowsToMem() Error, can't "
"open CSV file: %s !\n",CSVfName);
#endif
cmeCSVFileToSecureDBFree();
return(4);
}
if (colNames) //If not the first cycle, free colNames (which will also set to NULL all ptrs.)
{
for (cont=0;cont<(*numCols);cont++)
{
cmeFree(colNames[cont]);
}
cmeFree(colNames);
}
colNames=(char **)malloc((sizeof(char *)) * (*numCols)); //Reserve space and copy column names.
for (cont=0;cont<(*numCols);cont++)
{
colNames[cont]=NULL; //Set all ptrs. to NULL as required by cmeStrConstrAppend().
if(!strcmp(elements[cont],"id")) //Found column named "id"!
{
cmeStrConstrAppend(&(colNames[cont]),"_id"); //"id" name is reserved for internal databases; so we change it!
}
else //Otherwise, just copy the column name provided.
{
cmeStrConstrAppend(&(colNames[cont]),"%s",elements[cont]);
}
}
// TODO (OHR#6#): Create & call function to create DB files in memory for CSV column imports.
if (!(SQLDBfNames)) //Create (and open) DB files in memory if they have not been created.
{
totalParts=((cycleProcessedRows/cmeMaxCSVRowsInPart)+((cycleProcessedRows%cmeMaxCSVRowsInPart > 0)? 1 : 0 ));
numSQLDBfNames=(*numCols)*totalParts;
ppDB=(sqlite3 **)malloc(sizeof(sqlite3 *)*numSQLDBfNames);
if (!ppDB)
{
cmeCSVFileToSecureDBFree();
return(5);
}
SQLDBfNames=(char **)malloc(sizeof(char *)*numSQLDBfNames);
SQLDBfMACs=(char **)malloc(sizeof(char *)*numSQLDBfNames);
SQLDBfSalts=(char **)malloc(sizeof(char *)*numSQLDBfNames);
if ((!SQLDBfNames)||(!SQLDBfMACs)||(!SQLDBfSalts))
{
cmeCSVFileToSecureDBFree();
return(6);
}
for(cont=0;cont<numSQLDBfNames;cont++) //Reset memory pointers
{
SQLDBfNames[cont]=NULL;
SQLDBfMACs[cont]=NULL;
SQLDBfSalts[cont]=NULL;
cmeGetRndSaltAnySize(&(SQLDBfSalts[cont]),cmeDefaultValueSaltLen); //Get current salt for encryption (random hexstr).
}
for (cont=0;cont<numSQLDBfNames;cont++) //Create random filenames for column parts.
{
cmeGetRndSalt(&(SQLDBfNames[cont]));
//TODO (OHR#8#): Create SQLDBfNames collision handling routine. Just in case.
if (cmeDBCreateOpen(":memory:",&(ppDB[cont])))
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeDBCreateOpen() Error, can't "
"Create and Open memory DB corresponding to DB file: %s !\n",SQLDBfNames[cont]);
#endif
cmeCSVFileToSecureDBFree();
return(7);
}
cmeStrConstrAppend(&sqlQuery,"BEGIN TRANSACTION; CREATE TABLE data "
"(id INTEGER PRIMARY KEY, userId TEXT, orgId TEXT, salt TEXT,"
" value TEXT, rowOrder TEXT, MAC TEXT, sign TEXT, MACProtected TEXT,"
" signProtected TEXT, otphDkey TEXT);"
"COMMIT;");
if (cmeSQLRows((ppDB[cont]),sqlQuery,NULL,NULL)) //Create a table 'data'.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeSQLRows() Error, can't "
"create table 'data' in DB file %d: %s!\n",cont,SQLDBfNames[cont]);
#endif
cmeCSVFileToSecureDBFree();
return(9);
}
cmeFree(sqlQuery); //Free memory that was used for queries.
cmeStrConstrAppend(&sqlQuery,"BEGIN TRANSACTION; CREATE TABLE meta "
"(id INTEGER PRIMARY KEY, userId TEXT, orgID TEXT, salt TEXT,"
" attribute TEXT, attributeData TEXT); COMMIT;");
if (cmeSQLRows((ppDB[cont]),sqlQuery,NULL,NULL)) //Create a table 'meta'.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeSQLRows() Error, can't "
"create table 'meta' in DB file %d: %s!\n",cont,SQLDBfNames[cont]);
#endif
cmeCSVFileToSecureDBFree();
return(11);
}
cmeFree(sqlQuery); //Free memory that was used for queries.
}
for (cont=0;cont<numSQLDBfNames;cont++) //Insert data into meta table.
{ //Insert 'name' attribute.
cmeStrConstrAppend(&sqlQuery,"BEGIN TRANSACTION; "
"INSERT INTO meta (id, userId, orgId, attribute, attributeData) "
"VALUES (NULL");
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(userId,&sanitizedStr); //Sanitize parameter userId for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(orgId,&sanitizedStr); //Sanitize parameter orgId for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeStrConstrAppend(&sqlQuery,",'name'"); //Add literal 'name' for attribute.
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(colNames[cont%(*numCols)],&sanitizedStr); //Sanitize parameter attributeData for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeStrConstrAppend(&sqlQuery,");"); //End sql statement string.
cmeStrConstrAppend(&salt,"%s",nullParam); //Salt will be calculated and included in cmeMemSecureDBProtect()
for (cont2=0; cont2<numAttribute; cont2++) //Append other security attributes.
{
cmeStrConstrAppend(&sqlQuery,"INSERT INTO meta (id, userId, orgId, salt, attribute, attributeData) "
"VALUES (NULL");
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(userId,&sanitizedStr); //Sanitize parameter userId for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(orgId,&sanitizedStr); //Sanitize parameter orgId for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeStrConstrAppend(&sqlQuery,",'%s'",salt); //Add literal salt.
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(attribute[cont2],&sanitizedStr); //Sanitize parameter attribute for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(attributeData[cont2],&sanitizedStr); //Sanitize parameter attributeData for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeStrConstrAppend(&sqlQuery,");"); //End sql statement string.
}
cmeFree(salt);
cmeStrConstrAppend(&sqlQuery,"COMMIT;");
if (cmeSQLRows((ppDB[cont]),sqlQuery,NULL,NULL)) //Insert row.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeSQLRows() Error, can't "
"insert row in DB file %d: %s!\n",cont,SQLDBfNames[cont]);
#endif
cmeCSVFileToSecureDBFree();
return(17);
}
cmeFree(sqlQuery); //Free memory that was used for queries.
}
}
//TODO (OHR#6#): Create and call function to insert data into tables (move code there).
for (cont=0;cont<totalParts;cont++) //Process each column part.
{
for (cont2=0;cont2<(*numCols);cont2++) //Process each column.
{
if ((cont+1)*cmeMaxCSVRowsInPart>cycleProcessedRows) // Last part? yes-> then set rContLimit to the remaining rows.
{
rContLimit=cycleProcessedRows-(cont*cmeMaxCSVRowsInPart);
}
else
{
rContLimit=(cycleProcessedRows>cmeMaxCSVRowsInPart)?cmeMaxCSVRowsInPart:cycleProcessedRows;
}
for(cont3=1;cont3<=rContLimit;cont3++) //Skip header row in elements[]; process each row.
{
value=elements[cont2+((*numCols)*(cont3+cont*cmeMaxCSVRowsInPart))];
//Setup attribute defaults.
cmeStrConstrAppend(&securedRowOrder,"%d",cont3+rowStart+cont*cmeMaxCSVRowsInPart);
cmeStrConstrAppend(&MAC,"%s",nullParam); // TODO (OHR#2#): Calculate MAC, MAC protected and stuff. Probably outside this function.
cmeStrConstrAppend(&MACProtected,"%s",nullParam);
cmeStrConstrAppend(&sign,"%s",nullParam);
cmeStrConstrAppend(&signProtected,"%s",nullParam);
cmeStrConstrAppend(&otphDkey,"%s",nullParam);
cmeStrConstrAppend(&salt,"%s",nullParam); //Salt wil be included in cmeMemSecureDBProtect().
cmeStrConstrAppend(&sqlQuery,"BEGIN TRANSACTION; INSERT INTO data "
"(id,userId,orgId,salt,value,rowOrder,MAC,sign,MACProtected,signProtected,otphDkey)"
" VALUES (NULL");
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(userId,&sanitizedStr); //Sanitize parameter userId for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(orgId,&sanitizedStr); //Sanitize parameter orgId for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeStrConstrAppend(&sqlQuery,",'%s'",salt); //Add literal salt.
cmeFree(sanitizedStr);
cmeSanitizeStrForSQL(value,&sanitizedStr); //Sanitize parameter value for use in SQL statement.
cmeStrConstrAppend(&sqlQuery,",'%s'",sanitizedStr);
cmeStrConstrAppend(&sqlQuery,",'%s','%s','%s','%s','%s','%s');" //Add remaining parameters.
"COMMIT;",securedRowOrder,MAC,sign,
MACProtected,signProtected,otphDkey);
//Free stuff;
cmeFree(salt);
cmeFree(otphDkey);
cmeFree(signProtected);
cmeFree(sign);
cmeFree(MACProtected);
cmeFree(MAC);
cmeFree(securedRowOrder);
if (cmeSQLRows((ppDB[(*numCols)*cont+cont2]),sqlQuery,NULL,NULL)) //Insert row.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeSQLRows() Error, can't "
"insert row in DB file %d: %s!\n",cont,SQLDBfNames[cont]);
#endif
cmeCSVFileToSecureDBFree();
return(13);
}
cmeFree(sqlQuery); //Free memory that was used for queries.
}
}
}
rowStart+=cmeCSVRowBuffer; //Process next block of rows.
rowEnd+=cmeCSVRowBuffer;
cmeCSVFileRowsToMemTableFinal(&elements,*numCols,cycleProcessedRows); //Free element table
*processedRows+=cycleProcessedRows;
} while (cycleProcessedRows==cmeCSVRowBuffer);
for (cont=0; cont<numSQLDBfNames; cont++) //Create backup DB files; copy Memory DBs there.
{
if (numAttribute) //If security attributes are defined, override corresponding defaults.
{
result=cmeMemSecureDBProtect(ppDB[cont],orgKey);
cmeStrConstrAppend(&sqlQuery,"VACUUM;"); //Reconstruct DB without slack space w/ unprotected data!
if (cmeSQLRows((ppDB[cont]),sqlQuery,NULL,NULL)) //Vacuum DB col.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeSQLRows() Error, can't "
"VACUUM DB file %d: %s!\n",cont,SQLDBfNames[cont]);
#endif
cmeCSVFileToSecureDBFree();
return(14);
}
cmeFree(sqlQuery); //Free memory that was used for queries.
}
cmeFree(bkpFName);
cmeStrConstrAppend(&bkpFName,"%s%s",storagePath,SQLDBfNames[cont]);
result=cmeMemDBLoadOrSave(ppDB[cont],bkpFName,1);
if (result)
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeMemDBLoadOrSave() error cannot "
"load/save file: %s; Save: %d!\n",bkpFName,1);
#endif
cmeCSVFileToSecureDBFree();
return(15);
}
//Get MAC of recently created file:
result=cmeLoadStrFromFile(¤tRawFileContent,bkpFName,&readBytes);
if (result)
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeLoadStrFromFile() error cannot "
"load recently created file part: %s !\n",bkpFName);
#endif
cmeCSVFileToSecureDBFree();
return(16);
}
result=cmeHMACByteString((const unsigned char *)currentRawFileContent,(unsigned char **)&(SQLDBfMACs[cont]),readBytes,&written,cmeDefaultMACAlg,&(SQLDBfSalts[cont]),orgKey);
cmeFree(currentRawFileContent);
cmeFree(bkpFName);
}
result=cmeRegisterSecureDBorFile ((const char **)SQLDBfNames, numSQLDBfNames,(const char **)SQLDBfSalts, (const char **)SQLDBfMACs,totalParts,orgKey, userId, orgId, resourceInfo,
documentType,documentId,storageId,orgId);
if (result) //error
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeCVSFileToSecureSQL(), cmeRegisterSecureDB() error cannot "
"register documentId %s with documentType %s; Error#: %d!\n",documentId,documentType,result);
#endif
cmeCSVFileToSecureDBFree();
return(17);
}
cmeCSVFileToSecureDBFree();
return (0);
}
int cmeRAWFileToSecureFile (const char *rawFileName, const char *userId,const char *orgId,const char *orgKey,
const char *resourceInfo, const char *documentType, const char *documentId,
const char *storageId, const char *storagePath)
{ //IDD v.1.0.21
int cont,result,written,written2,lastPartSize;
int bufferLen=0;
int numParts=0;
int tmpMemDataLen=0; //This will contain the size in bytes of the data read in memory from file.
char *tmpMemDataBuffer=NULL; //This will point to reserved memory that will hold the file data.
char *tmpMemCiphertext=NULL; //This will hold the encrypted data.
char *tmpMemB64Ciphertext=NULL; //This will hold the B64 encoded version of the encrypted data.
char *currentFilePartPath=NULL; //This will hold the whole file path for the current file part.
const char *pFilePartStart=NULL; //This will point to the start of each file slice (no need to free this ptr).
char **filePartNames=NULL; //This will hold the random file part names.
char **filePartMACs=NULL; //This will hold the MACs for all file parts.
char **filePartSalts=NULL; //This will hold the salts for all file parts.
#define cmeRAWFileToSecureFileFree() \
do { \
cmeFree(tmpMemDataBuffer); \
cmeFree(tmpMemCiphertext); \
cmeFree(tmpMemB64Ciphertext); \
cmeFree(currentFilePartPath); \
if (filePartNames) \
{ \
for (cont=0;cont<numParts;cont++) \
{ \
cmeFree(filePartNames[cont]); \
} \
cmeFree(filePartNames); \
} \
if (filePartMACs) \
{ \
for (cont=0;cont<numParts;cont++) \
{ \
cmeFree(filePartMACs[cont]); \
} \
cmeFree(filePartMACs); \
} \
if (filePartSalts) \
{ \
for (cont=0;cont<numParts;cont++) \
{ \
cmeFree(filePartSalts[cont]); \
} \
cmeFree(filePartSalts); \
} \
} while (0); //Local free() macro.
result=cmeLoadStrFromFile(&tmpMemDataBuffer,rawFileName,&tmpMemDataLen); //Read file into memory
if (result) //Error reading file into memory.
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeRAWFileToSecureFile(), cmeLoadStrFromFile() error cannot "
"read raw file: %s !\n",rawFileName);
#endif
cmeRAWFileToSecureFileFree();
return(1);
}
numParts=tmpMemDataLen/cmeMaxRAWDataInPart;
lastPartSize=tmpMemDataLen%cmeMaxRAWDataInPart;
if (lastPartSize) // We have a remainder
{
numParts++;
}
filePartNames=(char **)malloc(sizeof(char *)*numParts); //Reserve memory for file part name pointers.
filePartMACs=(char **)malloc(sizeof(char *)*numParts); //Reserve memory for file part MAC pointers.
filePartSalts=(char **)malloc(sizeof(char *)*numParts); //Reserve memory for file part salt pointers.
for(cont=0;cont<numParts; cont++) // Initialize pointers.
{
filePartMACs[cont]=NULL;
filePartNames[cont]=NULL;
filePartSalts[cont]=NULL;
cmeGetRndSalt(&(filePartNames[cont])); //Get current file name (random hexstr).
cmeGetRndSaltAnySize(&(filePartSalts[cont]),cmeDefaultValueSaltLen); //Get current salt for encryption (random hexstr).
}
for (cont=0;cont<numParts;cont++)// Slice file in parts - analogous to column parts in secureDB for CSVs.
{
cmeStrConstrAppend(¤tFilePartPath,"%s%s",storagePath,filePartNames[cont]);
pFilePartStart=&(tmpMemDataBuffer[cont*cmeMaxRAWDataInPart]); //Point to beginning of file part.
if ((cont+1)==numParts) //If this is the last part.
{
bufferLen=lastPartSize;
}
else //Not the last part.
{
bufferLen=cmeMaxRAWDataInPart;
}
//Protect memory data with orgKey and default encryption algorithm:
result=cmeProtectByteString(pFilePartStart,&tmpMemB64Ciphertext,cmeDefaultEncAlg,&(filePartSalts[cont]),orgKey,
&written,bufferLen);
if (result) //Error protecting data in memory
{
#ifdef ERROR_LOG
fprintf(stderr,"CaumeDSE Error: cmeRAWFileToSecureFile(), cmeProtectByteString() error cannot "
"protect file part number %d, with algorithm %s !\n",cont,cmeDefaultEncAlg);
#endif
cmeRAWFileToSecureFileFree();
return(2);
}
cmeWriteStrToFile(tmpMemB64Ciphertext,currentFilePartPath,written); //Write encrypted data to currentFilePartPath file.
cmeHMACByteString((const unsigned char *)tmpMemB64Ciphertext,(unsigned char **)&(filePartMACs[cont]),written,&written2,
cmeDefaultHshAlg,&(filePartSalts[cont]),orgKey); //Calculate MAC on file part in memory.
cmeFree(tmpMemB64Ciphertext); //Free B64 encoded, encryptede data; we don't need it any more.
cmeFree(currentFilePartPath);
}
//Register parts as a secure file in engine DBs
result=cmeRegisterSecureDBorFile ((const char **)filePartNames,numParts,(const char **)filePartSalts,(const char **)filePartMACs,
numParts,orgKey,userId,orgId,resourceInfo,documentType,documentId,storageId,orgId);
if (result)//Error
{
cmeRAWFileToSecureFileFree();
return(4);
}
cmeRAWFileToSecureFileFree();
return (0);
}
int cmeSecureFileToTmpRAWFile (char **tmpRAWFile, sqlite3 *pResourcesDB,const char *documentId,
const char *documentType, const char *documentPath, const char *orgId,
const char *storageId, const char *orgKey)
{ //IDD v.1.0.21
int cont,cont2,result,written,written2,MACLen;
int numRows=0;
int numCols=0;
int dbNumCols=0;
int partMACmismatch=0;
FILE *fpTmpRAWFile=NULL;
int *memFilePartsOrder=NULL; //Dynamic array to store the corresponding order of the file part.
int *memFilePartsDataSize=NULL; //Dynamic array to store the corresponding size in bytes, of the file part.
char **memFilePartsData=NULL; //Dynamic array to store unencrypted data of each part of the protected file.
char **queryResult=NULL;
char **colSQLDBfNames=NULL; //Dynamic array to store part filenames of the protected RAWFile.