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- /***************************************************************************
- * Copyright (C) 2007 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2007,2008 Øyvind Harboe *
- * oyvind.harboe@zylin.com *
- * *
- * Copyright (C) 2008 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "types.h"
- #include "replacements.h"
- #include "log.h"
- #include "configuration.h"
-
- #include "fileio.h"
-
- #include <stdio.h>
- #include <string.h>
- #include <unistd.h>
- #include <stdlib.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <errno.h>
- #include <ctype.h>
-
- int fileio_close(fileio_t *fileio);
- int fileio_dispatch_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read);
-
- int fileio_open_local(fileio_t *fileio)
- {
- char access[4];
-
- switch (fileio->access)
- {
- case FILEIO_READ:
- strcpy(access, "r");
- break;
- case FILEIO_WRITE:
- strcpy(access, "w");
- break;
- case FILEIO_READWRITE:
- strcpy(access, "w+");
- break;
- case FILEIO_APPEND:
- strcpy(access, "a");
- break;
- case FILEIO_APPENDREAD:
- strcpy(access, "a+");
- break;
- default:
- LOG_ERROR("BUG: access neither read, write nor readwrite");
- return ERROR_INVALID_ARGUMENTS;
- }
-
- /* win32 always opens in binary mode */
- #ifndef _WIN32
- if (fileio->type == FILEIO_BINARY)
- #endif
- {
- strcat(access, "b");
- }
-
- if (!(fileio->file = open_file_from_path (fileio->url, access)))
- {
- LOG_ERROR("couldn't open %s", fileio->url);
- return ERROR_FILEIO_OPERATION_FAILED;
- }
-
- if ((fileio->access != FILEIO_WRITE) || (fileio->access == FILEIO_READWRITE))
- {
- /* NB! Here we use fseek() instead of stat(), since stat is a
- * more advanced operation that might not apply to e.g. a disk path
- * that refers to e.g. a tftp client */
- int result, result2;
-
- result = fseek(fileio->file, 0, SEEK_END);
-
- fileio->size = ftell(fileio->file);
-
- result2 = fseek(fileio->file, 0, SEEK_SET);
-
- if ((fileio->size<0)||(result<0)||(result2<0))
- {
- fileio_close(fileio);
- return ERROR_FILEIO_OPERATION_FAILED;
- }
- }
- else
- {
- fileio->size = 0x0;
- }
-
- return ERROR_OK;
- }
-
- int fileio_open(fileio_t *fileio, char *url, enum fileio_access access, enum fileio_type type)
- {
- int retval = ERROR_OK;
-
- fileio->type = type;
- fileio->access = access;
- fileio->url = strdup(url);
-
- retval = fileio_open_local(fileio);
-
- return retval;
- }
-
- int fileio_close_local(fileio_t *fileio)
- {
- int retval;
- if ((retval = fclose(fileio->file)) != 0)
- {
- if (retval == EBADF)
- {
- LOG_ERROR("BUG: fileio_local->file not a valid file descriptor");
- }
- else
- {
- LOG_ERROR("couldn't close %s: %s", fileio->url, strerror(errno));
- }
-
- return ERROR_FILEIO_OPERATION_FAILED;
- }
-
- return ERROR_OK;
- }
-
- int fileio_close(fileio_t *fileio)
- {
- int retval;
-
- retval = fileio_close_local(fileio);
-
- free(fileio->url);
- fileio->url = NULL;
-
- return retval;
- }
-
- int fileio_seek(fileio_t *fileio, u32 position)
- {
- int retval;
- if ((retval = fseek(fileio->file, position, SEEK_SET)) != 0)
- {
- LOG_ERROR("couldn't seek file %s: %s", fileio->url, strerror(errno));
- return ERROR_FILEIO_OPERATION_FAILED;
- }
-
- return ERROR_OK;
- }
-
- int fileio_local_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read)
- {
- *size_read = fread(buffer, 1, size, fileio->file);
-
- return ERROR_OK;
- }
-
- int fileio_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read)
- {
- return fileio_local_read(fileio, size, buffer, size_read);
- }
-
- int fileio_read_u32(fileio_t *fileio, u32 *data)
- {
- u8 buf[4];
- u32 size_read;
- int retval;
-
- if ((retval = fileio_local_read(fileio, 4, buf, &size_read)) != ERROR_OK)
- return retval;
- *data = be_to_h_u32(buf);
-
- return ERROR_OK;
- }
-
- int fileio_local_fgets(fileio_t *fileio, u32 size, char *buffer)
- {
- if( fgets(buffer, size, fileio->file) == NULL)
- return ERROR_FILEIO_OPERATION_FAILED;
-
- return ERROR_OK;
- }
-
- int fileio_fgets(fileio_t *fileio, u32 size, char *buffer)
- {
- return fileio_local_fgets(fileio, size, buffer);
- }
-
- int fileio_local_write(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_written)
- {
- *size_written = fwrite(buffer, 1, size, fileio->file);
-
- return ERROR_OK;
- }
-
- int fileio_write(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_written)
- {
- int retval;
-
- retval = fileio_local_write(fileio, size, buffer, size_written);
-
- if (retval == ERROR_OK)
- fileio->size += *size_written;
-
- return retval;;
- }
-
- int fileio_write_u32(fileio_t *fileio, u32 data)
- {
- u8 buf[4];
- u32 size_written;
- int retval;
-
- h_u32_to_be(buf, data);
-
- if ((retval = fileio_local_write(fileio, 4, buf, &size_written)) != ERROR_OK)
- return retval;
-
- return ERROR_OK;
- }
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