PAPISERVICECREATE(3PAPI)PAPISERVICECREATE(3PAPI)NAME
papiServiceCreate, papiServiceDestroy, papiServiceSetUserName, papiSer‐
viceSetPassword, papiServiceSetEncryption, papiServiceSetAuthCB, papiS‐
erviceSetAppData, papiServiceGetServiceName, papiServiceGetUserName,
papiServiceGetPassword, papiServiceGetEncryption, papiServiceGetApp‐
Data, papiServiceGetAttributeList, papiServiceGetStatusMessage - ser‐
vice context manipulation
SYNOPSIS
cc [ flag... ] file... -lpapi [ library... ]
#include <papi.h>
papi_status_t papiServiceCreate(papi_service_t *handle,
char *service_name, char *user_name, char *password,
int (*authCB)(papi_service_t svc, void *app_data),
papi_encryption_t encryption, void *app_data);
void papiServiceDestroy(papi_service_t handle);
papi_status_t papiServiceSetUserName(papi_service_t handle,
char *user_name);
papi_status_t papiServiceSetPassword(papi_service_t handle,
char *password);
papi_status_t papiServiceSetEncryption(papi_service_t handle,
papi_encryption_t encryption);
papi_status_t papiServiceSetAuthCB(papi_service_t handle,
int (*authCB)(papi_service_t s, void *app_data));
papi_status_t papiServiceSetAppData(papi_service_t handle,
void *app_data);
char *papiServiceGetServiceName(papi_service_t handle);
char *papiServiceGetUserName(papi_service_t handle);
char *papiServiceGetPassword(papi_service_t handle);
papi_encryption_t papiServiceGetEncryption(papi_service_t handle);
void *papiServiceGetAppData(papi_service_t handle);
papi_attribute_t **papiServiceGetAttributeList(papi_service_t handle);
char *papiServiceGetStatusMessage(papi_service_t handle);
PARAMETERS
app_data
a set of additional data to be passed to the authCB
if/when it is called
authCB
a callback routine use to gather additional authentica‐
tion information on behalf of the print service
encryption
whether or not encryption should be used for communica‐
tion with the print service, where applicable. If
PAPI_ENCRYPT_IF_REQUESTED is specified, encryption will
be used if the print service requests it. If
PAPI_ENCRYPT_NEVER is specified, encryption will not be
used while communicating with the print service. If
PAPI_ENCRYPT_REQUIRED or PAPI_ENCRYPT_ALWAYS is speci‐
fied, encryption will be required while communicating
with the print service
handle
a pointer to a handle to be used for all libpapi opera‐
tions. This handle should be initialized to NULL prior
to creation
password
a plain text password to be used during any required
user authentication with the print service function set
with papiServiceSetAuthCB(). This provides the callback
function a means of interrogating the service context
for user information and setting a password.
s
the service context passed into the the authentication
callback
service_name
the name of a print service to contact. This can be
NULL, a print service name like "lpsched", a resolvable
printer name, or a printer-uri like ipp://server/print‐
ers/queue.
svc
a handle (service context) used by subsequent PAPI
calls to keep/pass information across PAPI calls. It
generally contains connection, state, and authentica‐
tion information.
user_name
the name of the user to act on behalf of while contact‐
ing the print service. If a value of NULL is used, the
user name associated with the current processes UID
will be used. Specifying a user name might require fur‐
ther authentication with the print service.
DESCRIPTION
The papiServiceCreate() function creates a service context for use in
subsequent calls to libpapi functions. The context is returned in the
handle argument. This context must be destroyed using papiServiceDe‐
stroy() even if the papiServiceCreate() call failed.
The papiServiceSet*() functions modifies the requested value in the
service context passed in. It is recommended that these functions be
avoided in favor of supplying the information when the context is cre‐
ated.
The papiServiceGetStatusMessage() function retrieves a detailed error
message associated with the service context. This message will apply
to the last failed operation.
The remaining papiServiceGet*() functions return the requested informa‐
tion associated with the service context. A value of NULL indicates
that the requested value was not initialized or is unavailable.
RETURN VALUES
Upon successful completion, papiServiceCreate() and the papiService‐
Set*() functions return PAPI_OK. Otherwise, they return an appropriate
papi_status_t indicating the type of failure.
Upon successful completion, the papiServiceGet*() functions return a
pointer to the requested data. Otherwise, they return NULL.
EXAMPLES
Example 1 Create a PAPI service context.
/*
* program to create a PAPI service context.
*/
#include <stdio.h>
#include <papi.h>
static int
authCB(papi_service_t svc, void *app_data)
{
char prompt[BUFSIZ];
char *user, *svc_name, *passphrase;
/* get the name of the service we are contacting */
if ((svc_name = papiServiceGetServiceName(svc)) == NULL)
return (-1);
/* find out who we are supposed to be */
if ((user = papiServiceGetUserName(svc)) == NULL) {
struct passwd *pw;
if ((pw = getpwuid(getuid())) != NULL)
user = pw->pw_name;
else
user = "nobody";
}
/* build the prompt string */
snprintf(prompt, sizeof (prompt),
gettext("passphrase for %s to access %s: "), user,
svc_name);
/* ask for the passphrase */
if ((passphrase = getpassphrase(prompt)) != NULL)
papiServiceSetPassword(svc, passphrase);
return (0);
}
/*ARGSUSED*/
int
main(int ac, char *av[])
{
char buf[BUFSIZ];
papi_status_t status;
papi_service_t *svc = NULL;
status = papiServiceCreate(&svc, av[1], NULL, NULL, authCB,
PAPI_ENCRYPT_NEVER, NULL);
if (status != PAPI_OK) {
/* do something */
} else
printf("Failed(%s): %s: %s\n", av[1], papiStatusString(status),
papiStatusMessage(svc));
papiServiceDestroy(svc);
}
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│Interface Stability │ Volatile │
├────────────────────┼─────────────────┤
│MT-Level │ Safe │
└────────────────────┴─────────────────┘
SEE ALSOlibpapi(3LIB), attributes(5)
Jan 17, 2007 PAPISERVICECREATE(3PAPI)
