mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-22 02:20:46 +00:00
395 lines
8.2 KiB
C
395 lines
8.2 KiB
C
/*
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bi_file.c
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CSQC file builtins
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include "QF/dstring.h"
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#include "QF/progs.h"
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#include "QF/quakefs.h"
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#include "QF/va.h"
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#include "QF/zone.h"
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#include "rua_internal.h"
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typedef struct qfile_s {
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struct qfile_s *next;
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struct qfile_s **prev;
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QFile *file;
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} qfile_t;
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typedef struct {
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PR_RESMAP (qfile_t) handle_map;
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qfile_t *handles;
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} qfile_resources_t;
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static qfile_t *
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handle_new (qfile_resources_t *res)
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{
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PR_RESNEW (qfile_t, res->handle_map);
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}
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static void
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handle_free (qfile_resources_t *res, qfile_t *handle)
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{
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PR_RESFREE (qfile_t, res->handle_map, handle);
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}
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static void
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handle_reset (qfile_resources_t *res)
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{
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PR_RESRESET (qfile_t, res->handle_map);
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}
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static inline qfile_t *
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handle_get (qfile_resources_t *res, int index)
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{
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PR_RESGET(res->handle_map, index);
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}
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static inline int
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handle_index (qfile_resources_t *res, qfile_t *handle)
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{
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PR_RESINDEX(res->handle_map, handle);
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}
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static void
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bi_qfile_clear (progs_t *pr, void *data)
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{
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qfile_resources_t *res = (qfile_resources_t *) data;
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qfile_t *handle;
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for (handle = res->handles; handle; handle = handle->next)
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Qclose (handle->file);
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res->handles = 0;
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handle_reset (res);
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}
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static int
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alloc_handle (qfile_resources_t *res, QFile *file)
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{
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qfile_t *handle = handle_new (res);
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if (!handle)
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return 0;
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handle->next = res->handles;
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handle->prev = &res->handles;
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if (res->handles)
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res->handles->prev = &handle->next;
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res->handles = handle;
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handle->file = file;
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return handle_index (res, handle);
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}
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int
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QFile_AllocHandle (progs_t *pr, QFile *file)
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{
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qfile_resources_t *res = PR_Resources_Find (pr, "QFile");
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return alloc_handle (res, file);
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}
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static void
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secured (progs_t *pr)
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{
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PR_RunError (pr, "Secured function called");
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}
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static void
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bi_Qrename (progs_t *pr)
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{
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const char *old = P_GSTRING (pr, 0);
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const char *new = P_GSTRING (pr, 1);
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R_INT (pr) = Qrename (old, new);
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}
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static void
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bi_Qremove (progs_t *pr)
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{
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const char *path = P_GSTRING (pr, 0);
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R_INT (pr) = Qremove (path);
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}
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static void
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bi_Qopen (progs_t *pr)
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{
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qfile_resources_t *res = PR_Resources_Find (pr, "QFile");
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const char *path = P_GSTRING (pr, 0);
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const char *mode = P_GSTRING (pr, 1);
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QFile *file;
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R_INT (pr) = 0;
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if (!(file = Qopen (path, mode)))
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return;
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if (!(R_INT (pr) = alloc_handle (res, file)))
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Qclose (file);
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}
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static qfile_t *
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get_handle (progs_t *pr, const char *name, int handle)
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{
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qfile_resources_t *res = PR_Resources_Find (pr, "QFile");
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qfile_t *h = handle_get (res, handle);
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if (!h)
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PR_RunError (pr, "invalid file handle passed to %s", name + 3);
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return h;
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}
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QFile *
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QFile_GetFile (progs_t *pr, int handle)
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{
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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return h->file;
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}
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static void
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bi_Qclose (progs_t *pr)
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{
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qfile_resources_t *res = PR_Resources_Find (pr, "QFile");
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int handle = P_INT (pr, 0);
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qfile_t *h = handle_get (res, handle);
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if (!h)
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PR_RunError (pr, "invalid file handle passed to Qclose");
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Qclose (h->file);
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*h->prev = h->next;
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if (h->next)
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h->next->prev = h->prev;
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handle_free (res, h);
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}
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static void
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bi_Qgetline (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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const char *s;
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s = Qgetline (h->file);
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if (s)
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RETURN_STRING (pr, s);
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else
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R_STRING (pr) = 0;
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}
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static void
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bi_Qreadstring (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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int len = P_INT (pr, 1);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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string_t str = PR_NewMutableString (pr);
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dstring_t *dstr = PR_GetMutableString (pr, str);
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dstr->size = len + 1;
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dstring_adjust (dstr);
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len = Qread (h->file, dstr->str, len);
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dstr->size = len + 1;
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dstr->str[len] = 0;
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R_STRING (pr) = str;
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}
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static void
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check_buffer (progs_t *pr, pr_type_t *buf, int count, const char *name)
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{
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int len;
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len = (count + sizeof (pr_type_t) - 1) / sizeof (pr_type_t);
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if (buf < pr->pr_globals || buf + len > pr->pr_globals + pr->globals_size)
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PR_RunError (pr, "%s: bad buffer", name);
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}
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static void
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bi_Qread (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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pr_type_t *buf = P_GPOINTER (pr, 1);
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int count = P_INT (pr, 2);
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check_buffer (pr, buf, count, "Qread");
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R_INT (pr) = Qread (h->file, buf, count);
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}
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static void
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bi_Qwrite (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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pr_type_t *buf = P_GPOINTER (pr, 1);
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int count = P_INT (pr, 2);
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check_buffer (pr, buf, count, "Qwrite");
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R_INT (pr) = Qwrite (h->file, buf, count);
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}
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static void
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bi_Qputs (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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const char *str = P_GSTRING (pr, 1);
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R_INT (pr) = Qputs (h->file, str);
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}
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#if 0
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static void
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bi_Qgets (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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pr_type_t *buf = P_GPOINTER (pr, 1);
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int count = P_INT (pr, 2);
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check_buffer (pr, buf, count, "Qgets");
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RETURN_POINTER (pr, Qgets (h->file, (char *) buf, count));
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}
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#endif
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static void
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bi_Qgetc (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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R_INT (pr) = Qgetc (h->file);
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}
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static void
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bi_Qputc (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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int c = P_INT (pr, 1);
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R_INT (pr) = Qputc (h->file, c);
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}
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static void
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bi_Qseek (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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int offset = P_INT (pr, 1);
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int whence = P_INT (pr, 2);
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R_INT (pr) = Qseek (h->file, offset, whence);
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}
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static void
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bi_Qtell (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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R_INT (pr) = Qtell (h->file);
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}
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static void
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bi_Qflush (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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R_INT (pr) = Qflush (h->file);
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}
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static void
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bi_Qeof (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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R_INT (pr) = Qeof (h->file);
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}
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static void
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bi_Qfilesize (progs_t *pr)
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{
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int handle = P_INT (pr, 0);
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qfile_t *h = get_handle (pr, __FUNCTION__, handle);
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R_INT (pr) = Qfilesize (h->file);
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}
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static builtin_t secure_builtins[] = {
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{"Qrename", secured, -1},
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{"Qremove", secured, -1},
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{"Qopen", secured, -1},
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{0}
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};
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static builtin_t insecure_builtins[] = {
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{"Qrename", bi_Qrename, -1},
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{"Qremove", bi_Qremove, -1},
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{"Qopen", bi_Qopen, -1},
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{0}
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};
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static builtin_t builtins[] = {
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{"Qclose", bi_Qclose, -1},
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{"Qgetline", bi_Qgetline, -1},
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{"Qreadstring", bi_Qreadstring, -1},
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{"Qread", bi_Qread, -1},
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{"Qwrite", bi_Qwrite, -1},
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{"Qputs", bi_Qputs, -1},
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// {"Qgets", bi_Qgets, -1},
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{"Qgetc", bi_Qgetc, -1},
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{"Qputc", bi_Qputc, -1},
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{"Qseek", bi_Qseek, -1},
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{"Qtell", bi_Qtell, -1},
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{"Qflush", bi_Qflush, -1},
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{"Qeof", bi_Qeof, -1},
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{"Qfilesize", bi_Qfilesize, -1},
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{0}
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};
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void
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RUA_QFile_Init (progs_t *pr, int secure)
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{
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qfile_resources_t *res = calloc (sizeof (qfile_resources_t), 1);
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PR_Resources_Register (pr, "QFile", res, bi_qfile_clear);
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if (secure) {
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PR_RegisterBuiltins (pr, secure_builtins);
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} else {
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PR_RegisterBuiltins (pr, insecure_builtins);
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}
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PR_RegisterBuiltins (pr, builtins);
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}
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