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/**
* SAMPUTIL.C -- Utility methods to convert struct pointers to user handles.
*
* @brief Utility methods to convert struct pointers to user handles.
*
* @file sampUtil.c
* @author Mike Fitzpatrick
* @date 7/10/09
*/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include "samp.h"
#define MAX_HANDLES 128
int numHandles = 0;
long sampHandles[MAX_HANDLES];
/* Public procedures
*/
handle_t samp_P2H (void *ptr);
void *samp_H2P (handle_t handle);
handle_t samp_newHandle (void *ptr);
void samp_freeHandle (handle_t handle);
/* Utility routines for keep track of handles.
*/
/**
* SAMP_NEWHANDLE -- Get an unused object handle.
*
* @brief Get an unused object handle
* @fn handle_t samp_newHandle (void *ptr)
*
* @param ptr pointer to object to be stored
* @return new object handle
*/
handle_t
samp_newHandle (void *ptr)
{
/* Initialize the handle-to-ptr converter the first time we're called,
** or whenever we've restarted.
*/
if (numHandles == 0)
memset (sampHandles, 0, sizeof (sampHandles));
sampHandles[++numHandles] = (long) ptr;
return (numHandles);
}
/**
* SAMP_FREEHANDLE -- Free the handle for later re-use.
*
* @brief Free the handle for later re-use.
* @fn samp_freeHandle (handle_t handle)
*
* @param handle object handle
* @return nothing
*/
void
samp_freeHandle (handle_t handle)
{
register int i, j;
void *ptr = samp_H2P (handle);
if (handle <= 0) {
fprintf (stderr, "Error: Attempt to free zero handle!\n");
return;
}
for (i=1; i < MAX_HANDLES; i++) {
if ((void *) ptr == (void *) sampHandles[i]) {
for (j=i+1; j < MAX_HANDLES; j++) {
if (sampHandles[j])
sampHandles[i++] = sampHandles[j];
else
break;
}
numHandles = ((numHandles-1) >= 0 ? (numHandles-1) : 0);
break;
}
}
}
/**
* SAMP_P2H -- Convert a pointer to a handle
*
* @brief Convert a pointer to a handle
* @fn handle_t samp_P2H (void *ptr)
*
* @param ptr pointer to object
* @return handle to object, < 0 on error
*/
handle_t
samp_P2H (void *ptr)
{
register int i;
for (i=1; i < MAX_HANDLES; i++) {
if ((void *) ptr == (void *) sampHandles[i])
return ((int) i);
}
return (-1);
}
/**
* SAMP_H2P -- Convert a handle to a pointer
*
* @brief Convert a handle to a pointer
* @fn void *samp_H2P (int handle)
*
* @param handle object handle
* @return pointer to object or NULL
*/
void *
samp_H2P (handle_t handle)
{
return ((void *) sampHandles[handle]);
}
/**
* SAMP_APP2ID -- Convert an application name to a public-ID.
*
* @brief Convert an application name to a public-ID.
* @fn pubId = samp_app2id (handle_t handle, char *appName)
*
* @param handle samp struct handle
* @param appName name of registered application
* @return public ID of application
*/
char *
samp_app2id (handle_t handle, char *appName)
{
Samp *samp = samp_H2P(handle);
register int i = 0;
for (i=0; i < samp->nclients; i++)
if (strcasecmp (appName, samp->clients[i].name) == 0)
return (samp->clients[i].pubId);
return (appName); /* Not found, return input appName */
}
/**
* SAMP_ID2APP -- Convert a public-ID to the application name.
*
* @brief Convert a public-ID to the application name.
* @fn appName = samp_id2app (handle_t handle, char *pubId)
*
* @param handle samp struct handle
* @param pubId public ID of application
* @return name of registered application
*/
char *
samp_id2app (handle_t handle, char *pubId)
{
Samp *samp = samp_H2P(handle);
register int i = 0;
for (i=0; i < samp->nclients; i++)
if (strcasecmp (pubId, samp->clients[i].pubId) == 0)
return (samp->clients[i].name);
return (pubId); /* Not found, return input pubId */
}
/**
* SAMP_SERVERPORT -- Return a unique port number for the server.
*
* @brief Return a unique port number for the server.
* @fn port = samp_serverPort (void)
*
* @return port number
*/
int
samp_serverPort ()
{
static int port = 0;
if ( port == 0 )
port = (DEF_PORT + (getpid() % 32768));
return ( port );
}
/**
* SAMP_PRINTMETADATA -- Print the metadata for the application.
*
* @brief Print the metadata for the application.
* @fn samp_printMetadata (handle_t handle, String name)
*
* @param handle samp handle
* @return nothing
*/
void
samp_printMetadata (handle_t handle, String name)
{
Samp *sampP = samp_H2P (handle);
register int i;
if (!name || strcmp (name, "samp.name") == 0)
printf ((!name ? "samp.name: %s\n" : "%s"),
sampP->appName);
if (!name || strcmp (name, "samp.description.text") == 0)
printf ((!name ? "samp.description.text: %s\n" : "%s"),
sampP->description);
if (!name || strcmp (name, "samp.icon.url") == 0)
printf ((!name ? "samp.icon.url: %s\n" : "%s"),
sampP->meta.iconURL);
if (!name || strcmp (name, "samp.documentation.url") == 0)
printf ((!name ? "samp.documentation.url: %s\n" : "%s"),
sampP->meta.docURL);
for (i=0; i < sampP->meta.nkeys; i++) {
if (!name) {
printf ("%s: %s\n", sampP->meta.aKey[i], sampP->meta.aVal[i]);
} else if (strcmp (name, sampP->meta.aKey[i]) == 0) {
if (!name)
printf ("%s: %s\n", sampP->meta.aKey[i], sampP->meta.aVal[i]);
else
printf ("%s\n", sampP->meta.aVal[i]);
}
}
}
/**
* SAMP_GETMETADATA -- Get the metadata item for the application.
*
* @brief Get the metadata item for the application.
* @fn str = samp_getMetadata (handle_t handle, String param)
*
* @param handle samp handle
* @return nothing
*/
char *
samp_getMetadata (handle_t handle, String name)
{
Samp *sampP = samp_H2P (handle);
register int i;
if (!name)
return (NULL);
if (strcmp (name, "samp.name") == 0)
return (sampP->appName);
if (strcmp (name, "samp.description.text") == 0)
return (sampP->description);
if (strcmp (name, "samp.icon.url") == 0)
return (sampP->meta.iconURL);
if (strcmp (name, "samp.documentation.url") == 0)
return (sampP->meta.docURL);
for (i=0; i < sampP->meta.nkeys; i++) {
if (strcmp (name, sampP->meta.aKey[i]) == 0)
return (sampP->meta.aVal[i]);
}
return (NULL);
}
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