Here's an example of how to unmarshall a result string from a STAF service
request using the STAF C Unmarshall API. This example submits a "STAF
local MISC SETTINGS" service request which returns a marshalled result
whose root object is a map and unmarshalls the result and accesses the
value for one of the keys in the map. We plan to add an unmarshalling
example using the STAF C APIs to the STAF documentation (probably based on
this example).
Note that we think that using the STAF C++ APIs to unmarshall data is
easier than using the STAF C APIs (if you can use C++ instead of C). The
STAF services use the C++ unmarshall APIs, so there are also lots of C++
examples in the STAF source code. When using the STAF C APIs to
unmarshall data, you'll probably find it helpful to look at STAF source
code like stafif/STAFDataTypesInlImpl.cpp.
#include "STAF.h"
#include "STAFDataTypes.h"
#include "STAF_iostream.h"
int main(int argc, char **argv)
{
STAFRC_t rc = 0;
char *handleName = "MyProgram";
STAFHandle_t myHandle = 0;
if ((rc = STAFRegister(handleName, &myHandle)) != 0)
{
printf("Error registering with STAF, RC: %d\n", rc);
return rc;
}
printf("\nUsing STAF handle number: %d\n", myHandle);
// Submit a STAF local MISC LIST SETTINGS service request
char *someMachine = "local";
char *service = "MISC";
char *request = "LIST SETTINGS";
unsigned int requestLength = strlen(request);
char *result = 0;
unsigned int resultLength = 0;
printf("\nSTAF %s %s %s\n", someMachine, service, request);
rc = STAFSubmit(myHandle, someMachine, service, request,
requestLength,
&result, &resultLength);
printf("\nRC: %d\n", rc);
printf("\nMarshalled Result String:\n%s\n", result);
// Unmarshall the marshalled result string
STAFObject_t context = 0;
unsigned int flags = 0;
STAFString_t *marshalledString;
STAFStringConstruct(marshalledString, result, resultLength, NULL);
STAFObjectUnmarshallFromString(&context, *marshalledString, 0, flags);
// Print the formatted output for the result's marshalling context
STAFString_t outString = 0;
STAFObjectGetFormattedStringValue(context, &outString, 0);
cout << "\nFormatted output for the result's marshalling context:\n"
<< STAFString(outString, STAFString::kShallow) << endl;
// Get the root object from the marshalling context (a map object)
STAFObject_t mapObj = 0;
STAFObjectMarshallingContextGetRootObject(context, &mapObj);
// Get the string value of the "connectAttempts" key from the map
object
const STAFString key("connectAttempts");
STAFObject_t valueObj = 0;
STAFObjectMapGet(mapObj, key.getImpl(), &valueObj);
STAFString_t connectAttempts = 0;
STAFObjectGetStringValue(valueObj, &connectAttempts);
cout << "\nconnectAttempts: "
<< STAFString(connectAttempts, STAFString::kShallow) << endl;
STAFFree(myHandle, result);
if ((rc = STAFUnRegister(myHandle)) != 0)
{
printf("\nError unregistering with STAF, RC: %d\n", rc);
return rc;
}
printf("\nEnd of Test\n");
return 0;
}
Here's the output from running this TestC program:
[r...@staf1b TestC]# g++ TestC.c -o TestC -lSTAF -L/usr/local/staf/lib
-I/usr/local/staf/include
[r...@staf1b TestC]# ./TestC
Using STAF handle number: 90
STAF local MISC LIST SETTINGS
RC: 0
Marshalled Result String:
@SDT/*:1334:@SDT/{:1110::13:map-class-...@sdt/{:1081::26:STAF/Service/Misc/Setti
n...@sdt/{:1039::4:k...@sdt/[11:975:@SDT/{:78::12:display-n...@sdt/$S:19:Connecti
on
Attempts:3:k...@sdt/$S:15:connectattem...@sdt/{:80::12:display-n...@sdt/$S:19:
Connect Retry
Delay:3:k...@sdt/$S:17:connectretryde...@sdt/{:77::12:display-name@
SDT/$S:17:Interface
Cycling:3:k...@sdt/$S:16:interfacecycl...@sdt/{:74::12:displa
y-n...@sdt/$S:18:Maximum Queue
Size:3:k...@sdt/$S:12:maxqueues...@sdt/{:85::12:di
splay-n...@sdt/$S:24:Maximum Return File
Size:3:k...@sdt/$S:17:maxReturnFileSize@
SDT/{:73::12:display-n...@sdt/$S:15:Initial
Threads:3:k...@sdt/$S:14:initialThrea
d...@sdt/{:80::12:display-n...@sdt/$S:19:Thread Growth
Delta:3:k...@sdt/$S:17:threa
dgrowthde...@sdt/{:64::12:display-n...@sdt/$S:14:Data
Directory:3:k...@sdt/$S:7:d
ata...@sdt/{:77::12:display-n...@sdt/$S:17:Default
Interface:3:k...@sdt/$S:16:def
aultinterf...@sdt/{:85::12:display-n...@sdt/$S:21:Default
Authenticator:3:k...@sd
T/$S:20:defaultauthentica...@sdt/{:92::12:display-n...@sdt/$S:25:Result
Compatib
ility
Mode:3:k...@sdt/$S:23:resultCompatibilityMode:4:n...@sdt/$S:26:STAF/Service
/Misc/setti...@sdt/%:201::26:STAF/Service/Misc/setti...@sdt/$S:1:2...@sdt/$S:4:1000
@SDT/$S:7:enab...@sdt/$S:5:50...@sdt/$S:1:0...@sdt/$S:2:1...@sdt/$S:1:1...@sdt/$S:25:/us
r/local/staf/data/s...@sdt/$S:3:s...@sdt/$S:4:n...@sdt/$S:7:Verbose
Formatted output for the result's marshalling context:
{
Connection Attempts : 2
Connect Retry Delay : 1000
Interface Cycling : Enabled
Maximum Queue Size : 50000
Maximum Return File Size : 0
Initial Threads : 10
Thread Growth Delta : 1
Data Directory : /usr/local/staf/data/STAF
Default Interface : ssl
Default Authenticator : none
Result Compatibility Mode: Verbose
}
connectAttempts: 2
End of Test
[r...@staf1b TestC]#
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
Phil Rumble <prum...@au1.ibm.com>
01/13/2010 09:03 PM
To
staf-users@lists.sourceforge.net
cc
Subject
[staf-users] C Example for handling marshalled data
Can anyone provide a C example of handling marshalled data being returned
from a STAFSubmit call.
Thanks
Rumble
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------------------------------------------------------------------------------
Throughout its 18-year history, RSA Conference consistently attracts the
world's best and brightest in the field, creating opportunities for Conference
attendees to learn about information security's most important issues through
interactions with peers, luminaries and emerging and established companies.
http://p.sf.net/sfu/rsaconf-dev2dev
_______________________________________________
staf-users mailing list
staf-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/staf-users
