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added authentication for mongo #6

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added authentication for mongo #6

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38 changes: 37 additions & 1 deletion mongo_fdw.c
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Original file line number Diff line number Diff line change
Expand Up @@ -287,6 +287,9 @@ MongoBeginForeignScan(ForeignScanState *scanState, int executorFlags)
MongoFdwOptions *mongoFdwOptions = NULL;
MongoFdwExecState *executionState = NULL;

char *databaseName= NULL;
char *username= NULL;
char *password= NULL;
/* if Explain with no Analyze, do nothing */
if (executorFlags & EXEC_FLAG_EXPLAIN_ONLY)
{
Expand All @@ -313,7 +316,31 @@ MongoBeginForeignScan(ForeignScanState *scanState, int executorFlags)

ereport(ERROR, (errmsg("could not connect to %s:%d", addressName, portNumber),
errhint("Mongo driver connection error: %d", errorCode)));
return;
}

/*authentication*/
databaseName = mongoFdwOptions->databaseName;
username = mongoFdwOptions->username;
password = mongoFdwOptions->password;
if (username && password)
{
connectStatus = mongo_cmd_authenticate(mongoConnection, databaseName, username, password);
if (connectStatus != MONGO_OK)
{

errorCode = (int32) mongoConnection->err;

mongo_destroy(mongoConnection);
mongo_dispose(mongoConnection);

ereport(ERROR, (errmsg("could not authenticate to %s:%s:%s", databaseName, username, password),
errhint("Mongo driver connection error: %d", errorCode)));
return;

}
}
/*end authentication*/

/* deserialize query document; and create column info hash */
foreignScan = (ForeignScan *) scanState->ss.ps.plan;
Expand Down Expand Up @@ -632,6 +659,8 @@ MongoGetOptions(Oid foreignTableId)
int32 portNumber = 0;
char *databaseName = NULL;
char *collectionName = NULL;
char *username= NULL;
char *password= NULL;

addressName = MongoGetOptionValue(foreignTableId, OPTION_NAME_ADDRESS);
if (addressName == NULL)
Expand Down Expand Up @@ -660,12 +689,16 @@ MongoGetOptions(Oid foreignTableId)
{
collectionName = get_rel_name(foreignTableId);
}

username = MongoGetOptionValue(foreignTableId, OPTION_NAME_USERNAME);
password = MongoGetOptionValue(foreignTableId, OPTION_NAME_PASSWORD);

mongoFdwOptions = (MongoFdwOptions *) palloc0(sizeof(MongoFdwOptions));
mongoFdwOptions->addressName = addressName;
mongoFdwOptions->portNumber = portNumber;
mongoFdwOptions->databaseName = databaseName;
mongoFdwOptions->collectionName = collectionName;
mongoFdwOptions->username = username;
mongoFdwOptions->password = password;

return mongoFdwOptions;
}
Expand All @@ -681,15 +714,18 @@ MongoGetOptionValue(Oid foreignTableId, const char *optionName)
{
ForeignTable *foreignTable = NULL;
ForeignServer *foreignServer = NULL;
UserMapping *mapping= NULL;
List *optionList = NIL;
ListCell *optionCell = NULL;
char *optionValue = NULL;

foreignTable = GetForeignTable(foreignTableId);
foreignServer = GetForeignServer(foreignTable->serverid);
mapping = GetUserMapping(GetUserId(), foreignTable->serverid);

optionList = list_concat(optionList, foreignTable->options);
optionList = list_concat(optionList, foreignServer->options);
optionList = list_concat(optionList, mapping->options);

foreach(optionCell, optionList)
{
Expand Down
13 changes: 11 additions & 2 deletions mongo_fdw.h
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Original file line number Diff line number Diff line change
Expand Up @@ -25,12 +25,15 @@
#include "nodes/relation.h"
#include "utils/timestamp.h"

#include "catalog/pg_user_mapping.h"

/* Defines for valid option names */
#define OPTION_NAME_ADDRESS "address"
#define OPTION_NAME_PORT "port"
#define OPTION_NAME_DATABASE "database"
#define OPTION_NAME_COLLECTION "collection"
#define OPTION_NAME_USERNAME "username"
#define OPTION_NAME_PASSWORD "password"

/* Default values for option parameters */
#define DEFAULT_IP_ADDRESS "127.0.0.1"
Expand Down Expand Up @@ -60,7 +63,7 @@ typedef struct MongoValidOption


/* Array of options that are valid for mongo_fdw */
static const uint32 ValidOptionCount = 4;
static const uint32 ValidOptionCount = 6;
static const MongoValidOption ValidOptionArray[] =
{
/* foreign server options */
Expand All @@ -69,7 +72,11 @@ static const MongoValidOption ValidOptionArray[] =

/* foreign table options */
{ OPTION_NAME_DATABASE, ForeignTableRelationId },
{ OPTION_NAME_COLLECTION, ForeignTableRelationId }
{ OPTION_NAME_COLLECTION, ForeignTableRelationId },

/* User mapping options */
{ OPTION_NAME_USERNAME, UserMappingRelationId },
{ OPTION_NAME_PASSWORD, UserMappingRelationId }
};


Expand All @@ -84,6 +91,8 @@ typedef struct MongoFdwOptions
int32 portNumber;
char *databaseName;
char *collectionName;
char *username;
char *password;

} MongoFdwOptions;

Expand Down