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437 lines
11 KiB
C
437 lines
11 KiB
C
/* riscos.c - RISC OS stuff
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* Copyright (C) 2001 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG for RISC OS.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG 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. See the
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* GNU General Public License for more details.
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*
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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 the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*/
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#ifndef __RISCOS__C__
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#define __RISCOS__C__
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#include <config.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include <kernel.h>
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#include <swis.h>
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#include "util.h"
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#include "memory.h"
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#include <unixlib/local.h> /* needed for RISCOSIFY_NO_PROCESS */
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#define __UNIXLIB_INTERNALS
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#include <unixlib/swiparams.h> /* needed for MMM_TYPE_* definitions */
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#undef __UNIXLIB_INTERNALS
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/* static symbols that trigger UnixLib behaviour */
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int __riscosify_control = __RISCOSIFY_NO_PROCESS;
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int __feature_imagefs_is_file = 1;
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/* RISC OS file open descriptor control list */
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struct fds_item {
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int fd;
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struct fds_item *next;
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};
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static struct fds_item *fds_list = NULL;
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static int fdlist_initialized = 0;
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/* local RISC OS functions */
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static int
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is_read_only(const char *filename)
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{
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int type, attr;
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if (_swix(OS_File, _INR(0,1) | _OUT(0) | _OUT(5),
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17, filename, &type, &attr))
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log_fatal("Can't get file attributes for file \"%s\"!\n", filename);
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if (type == 0)
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log_fatal("Can't find file \"%s\"!\n", filename);
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if (_swix(OS_File, _INR(0,1) | _IN(5), 4, filename, attr))
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return 1;
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return 0;
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}
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/* exported RISC OS functions */
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int
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riscos_load_module(const char *name, const char * const path[], int fatal)
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{
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int i;
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/* Is module already loaded? */
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if (!_swix(OS_Module, _INR(0,1), 18, name))
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return 1;
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/* Check all the places where the module could be located */
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for (i=0; path[i]; ++i)
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if (!_swix(OS_Module, _INR(0,1), 1, path[i]))
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return 1;
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/* Can't find module in the default locations */
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if (fatal)
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log_fatal("Operation cannot be performed without \"%s\" module!\n",
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name);
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else
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log_info("Can't load \"%s\" module, continuing anyway!\n", name);
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return 0;
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}
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int
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riscos_get_filetype_from_string(const char *string, int len)
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{
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int result = 0xfff;
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if (strlen(string) < 5 || string[len - 4] != ',')
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return -1;
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sscanf(string+len-3, "%3x", &result);
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return result;
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}
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int
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riscos_get_filetype(const char *filename)
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{
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int result;
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if (_swix(OS_File, _INR(0,1) | _OUT(2), 17, filename, &result))
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log_fatal("Can't get filetype for file \"%s\"!\n", filename);
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if ((result & 0xfff00000) == 0xfff00000)
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return (result & 0xfff00) >> 8;
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else
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return 0;
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}
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void
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riscos_set_filetype_by_number(const char *filename, int type)
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{
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if (_swix(OS_File, _INR(0,2), 18, filename, type))
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log_fatal("Can't set filetype for file \"%s\"!\n"
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"Is the file on a read-only file system?\n", filename);
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}
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void
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riscos_set_filetype_by_mimetype(const char *filename, const char *mimetype)
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{
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int result;
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if (_swix(MimeMap_Translate, _INR(0,2) | _OUT(3),
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MMM_TYPE_MIME, mimetype, MMM_TYPE_RISCOS, &result))
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log_fatal("Can't translate MIME type \"%s\"!\n", mimetype);
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riscos_set_filetype_by_number(filename, result);
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}
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pid_t
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riscos_getpid(void)
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{
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int state;
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if (_swix(Wimp_ReadSysInfo, _IN(0) | _OUT(0), 3, &state))
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log_fatal("Wimp_ReadSysInfo failed: Can't get WimpState (R0=3)!\n");
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if (state)
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if (_swix(Wimp_ReadSysInfo, _IN(0) | _OUT(0), 5, &state))
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log_fatal("Wimp_ReadSysInfo failed: "
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"Can't get task handle (R0=5)!\n");
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return (pid_t) state;
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}
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int
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riscos_kill(pid_t pid, int sig)
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{
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int buf[4], iter = 0;
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if (sig)
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kill(pid, sig);
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do {
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if (_swix(TaskManager_EnumerateTasks, _INR(0,2) | _OUT(0),
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iter, buf, 16, &iter))
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log_fatal("TaskManager_EnumerateTasks failed!\n");
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if (buf[0] == pid)
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return 0;
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} while (iter >= 0);
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return __set_errno(ESRCH);
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}
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int
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riscos_access(const char *path, int amode)
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{
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/* Do additional check, i.e. whether path is on write-protected floppy */
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if ((amode & W_OK) && is_read_only(path))
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return 1;
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return access(path, amode);
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}
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int
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riscos_getchar(void)
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{
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int c, flags;
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if (_swix(OS_ReadC, _OUT(0) | _OUT(_FLAGS), &c, &flags))
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log_fatal("OS_ReadC failed: Couldn't read from keyboard!\n");
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if (flags & _C)
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log_fatal("OS_ReadC failed: Return Code = %i!\n", c);
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return c;
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}
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#ifdef DEBUG
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void
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riscos_dump_fdlist(void)
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{
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struct fds_item *iter = fds_list;
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printf("List of open file descriptors:\n");
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while (iter) {
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printf(" %i\n", iter->fd);
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iter = iter->next;
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}
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}
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#endif /* DEBUG */
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int
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riscos_fdopenfile(const char *filename, const int allow_write)
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{
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struct fds_item *h;
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int fd;
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if (allow_write)
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fd = open(filename, O_CREAT | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
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else
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fd = open(filename, O_RDONLY);
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if (fd == -1)
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log_error("Can't open file \"%s\": %i, %s!\n",
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filename, errno, strerror(errno));
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if (!fdlist_initialized) {
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atexit (riscos_close_fds);
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fdlist_initialized = 1;
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}
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h = fds_list;
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fds_list = (struct fds_item *) xmalloc(sizeof(struct fds_item));
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if (!fds_list)
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log_fatal("Can't claim memory for fdopenfile() buffer!\n");
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fds_list->fd = fd;
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fds_list->next = h;
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return fd;
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}
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void
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riscos_close_fds(void)
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{
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FILE *fp;
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struct fds_item *h = fds_list;
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while( fds_list ) {
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h = fds_list->next;
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fp = fdopen (fds_list->fd, "a");
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if (fp)
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fflush(fp);
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close(fds_list->fd);
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xfree(fds_list);
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fds_list = h;
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}
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}
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int
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riscos_renamefile(const char *old, const char *new)
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{
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_kernel_oserror *e;
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if (e = _swix(OS_FSControl, _INR(0,2), 25, old, new)) {
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if (e->errnum == 214)
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return __set_errno(ENOENT);
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if (e->errnum == 176)
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return __set_errno(EEXIST);
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printf("Error during renaming: %i, %s!\n", e->errnum, e->errmess);
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return __set_errno(EOPSYS);
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}
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return 0;
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}
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char *
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riscos_gstrans(const char *old)
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{
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int size = 256, last;
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char *buf, *tmp;
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buf = (char *) xmalloc(size);
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if (!buf)
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log_fatal("Can't claim memory for OS_GSTrans buffer!\n");
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while (_C & _swi(OS_GSTrans, _INR(0,2) | _OUT(2) | _RETURN(_FLAGS),
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old, buf, size, &last)) {
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size += 256;
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tmp = (char *) xrealloc(buf, size);
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if (!tmp)
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log_fatal("Can't claim memory for OS_GSTrans buffer!\n");
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buf = tmp;
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}
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buf[last] = '\0';
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tmp = (char *) xrealloc(buf, last + 1);
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if (!tmp)
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log_fatal("Can't realloc memory after OS_GSTrans!\n");
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return tmp;
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}
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/***************
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* Extract from a given path the filename component.
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* (cloned from util/fileutil.c and then heavily modified)
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*/
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char *
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riscos_make_basename(const char *filepath, const char *realfname)
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{
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char *result, *p;
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int i, filetype;
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if ( (p = strrchr(filepath, DIRSEP_C)) )
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p++;
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else if ( (p = strrchr(filepath, ':')) )
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p++;
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else
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p = (char*) filepath;
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i = strlen(p);
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result = xmalloc(i + 5);
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if (!result)
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log_fatal("Can't claim memory for riscos_make_basename() buffer!\n");
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strcpy(result, p);
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filetype = riscos_get_filetype( realfname );
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result[i++] = ',';
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result[i++] = "0123456789abcdef"[(filetype >> 8) & 0xf];
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result[i++] = "0123456789abcdef"[(filetype >> 4) & 0xf];
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result[i++] = "0123456789abcdef"[(filetype >> 0) & 0xf];
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result[i] = 0;
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for(i=0; i<strlen(result); ++i)
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if(result[i] == '/')
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result[i] = '.';
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return result;
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}
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#define RegEx_CompilePattern 0x52AC0
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#define RegEx_Search 0x52AC2
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#define RegEx_Free 0x52AC7
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#define RegEx_CompileExtendedPattern 0x52AC9
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static const char * const regex_path[] = {
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"GnuPG:RegEx",
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"System:310.Modules.RegEx",
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"System:Modules.RegEx",
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NULL
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};
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int
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riscos_check_regexp(const char *exp, const char *string, int debug)
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{
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static int regex_initialized = 0;
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int ret;
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char *buf;
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if (!regex_initialized)
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regex_initialized = riscos_load_module("RegEx", regex_path, 0);
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if (!regex_initialized) {
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log_info("Regular expressions cannot be used!\n");
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return 0;
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}
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if (_swix(RegEx_CompileExtendedPattern, _INR(0,2) | _OUT(0) | _OUT(3),
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0, exp, 1<<18,
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&buf, &ret)) {
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log_info("RegEx could not compile pattern \"%s\".\n", exp);
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log_info("ErrorCode = %i\n", ret);
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return 0;
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}
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if (_swix(RegEx_Search, _INR(0,4) | _OUT(5),
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buf, string, -1, 0, -1,
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&ret)) {
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log_info("RegEx error during execution of serach pattern \"%s\"\n",
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exp);
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log_info("on string \"%s\"\n", string);
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return 0;
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}
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_swix(RegEx_Free, _IN(0), buf);
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if(debug)
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log_debug("regexp \"%s\" on \"%s\": %s\n",exp,string,ret>=0?"YES":"NO");
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return (ret>=0);
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}
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#ifdef DEBUG
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void
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riscos_list_openfiles(void)
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{
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char *name;
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int i, len;
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for (i = 255; i >= 0; --i) {
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if (_swix(OS_Args, _INR(0,2) | _IN(5) | _OUT(5), 7, i, 0, 0, &len))
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continue;
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name = (char *) xmalloc(1-len);
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if (!name)
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log_fatal("Can't claim memory for OS_Args buffer!\n");
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if (_swix(OS_Args, _INR(0,2) | _IN(5), 7, i, name, 1-len)) {
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xfree(name);
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log_fatal("Error when calling OS_Args(7)!\n");
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}
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if (_swix(OS_Args, _INR(0,1) | _OUT(0), 254, i, &len)) {
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xfree(name);
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log_fatal("Error when calling OS_Args(254)!\n");
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}
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printf("%3i: %s (%c%c)\n", i, name,
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(len & 0x40) ? 'R' : 0,
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(len & 0x80) ? 'W' : 0);
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xfree(name);
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}
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}
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#endif
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void
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riscos_not_implemented(const char *feature)
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{
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log_info("%s is not implemented in the RISC OS version!\n", feature);
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}
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#endif /* !__RISCOS__C__ */
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