1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
25 #include "replacements.h"
34 #include <sys/types.h>
39 int fileio_close(fileio_t *fileio);
40 int fileio_dispatch_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read);
42 int fileio_open_local(fileio_t *fileio)
44 fileio_local_t *fileio_local = malloc(sizeof(fileio_local_t));
47 if ((fileio->access != FILEIO_WRITE) && (fileio->access != FILEIO_READWRITE))
49 if (stat(fileio->url, &fileio_local->file_stat) == -1)
52 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING,
53 "couldn't stat() %s: %s", fileio->url, strerror(errno));
54 return ERROR_FILEIO_NOT_FOUND;
57 if (S_ISDIR(fileio_local->file_stat.st_mode))
60 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING, "%s is a directory", fileio->url);
61 return ERROR_FILEIO_NOT_FOUND;
65 switch (fileio->access)
73 case FILEIO_READWRITE:
79 case FILEIO_APPENDREAD:
84 ERROR("BUG: access neither read, write nor readwrite");
85 return ERROR_INVALID_ARGUMENTS;
88 if (fileio->access == FILEIO_READ)
90 if (fileio_local->file_stat.st_size == 0)
92 /* tried to open an empty file for reading */
94 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING, "empty file %s", fileio->url);
95 return ERROR_FILEIO_OPERATION_FAILED;
99 /* win32 always opens in binary mode */
101 if (fileio->type == FILEIO_BINARY)
107 if (!(fileio_local->file = fopen(fileio->url, access)))
110 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING, "couldn't open %s", fileio->url);
111 return ERROR_FILEIO_OPERATION_FAILED;
114 fileio->location_private = fileio_local;
116 if ((fileio->access != FILEIO_WRITE) || (fileio->access == FILEIO_READWRITE))
118 fileio->size = fileio_local->file_stat.st_size;
128 int fileio_open(fileio_t *fileio, char *url, enum fileio_access access, enum fileio_type type)
130 int retval = ERROR_OK;
131 char *resource_identifier = NULL;
133 /* try to identify file location */
134 if ((resource_identifier = strstr(url, "bootp://")) && (resource_identifier == url))
136 ERROR("bootp resource location isn't supported yet");
137 return ERROR_FILEIO_RESOURCE_TYPE_UNKNOWN;
139 else if ((resource_identifier = strstr(url, "tftp://")) && (resource_identifier == url))
141 ERROR("tftp resource location isn't supported yet");
142 return ERROR_FILEIO_RESOURCE_TYPE_UNKNOWN;
146 /* default to local files */
147 fileio->location = FILEIO_LOCAL;
151 fileio->access = access;
152 fileio->url = strdup(url);
154 switch (fileio->location)
157 retval = fileio_open_local(fileio);
160 ERROR("BUG: should never get here");
164 if (retval != ERROR_OK)
170 int fileio_close_local(fileio_t *fileio)
173 fileio_local_t *fileio_local = fileio->location_private;
175 if (fileio->location_private == NULL)
177 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING, "couldn't close %s: ", fileio->url);
178 return ERROR_FILEIO_OPERATION_FAILED;
181 if ((retval = fclose(fileio_local->file)) != 0)
185 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING, "BUG: fileio_local->file not a valid file descriptor");
189 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING, "couldn't close %s: %s", fileio->url, strerror(errno));
192 return ERROR_FILEIO_OPERATION_FAILED;
195 free(fileio->location_private);
196 fileio->location_private = NULL;
201 int fileio_close(fileio_t *fileio)
205 switch (fileio->location)
208 retval = fileio_close_local(fileio);
211 ERROR("BUG: should never get here");
212 retval = ERROR_FILEIO_OPERATION_FAILED;
215 if (retval != ERROR_OK)
224 int fileio_seek_local(fileio_t *fileio, u32 position)
227 fileio_local_t *fileio_local = fileio->location_private;
229 if ((retval = fseek(fileio_local->file, position, SEEK_SET)) != 0)
231 snprintf(fileio->error_str, FILEIO_MAX_ERROR_STRING, "couldn't seek file %s: %s", fileio->url, strerror(errno));
232 return ERROR_FILEIO_OPERATION_FAILED;
238 int fileio_seek(fileio_t *fileio, u32 position)
240 switch (fileio->location)
243 return fileio_seek_local(fileio, position);
246 ERROR("BUG: should never get here");
252 int fileio_local_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read)
254 fileio_local_t *fileio_local = fileio->location_private;
256 *size_read = fread(buffer, 1, size, fileio_local->file);
261 int fileio_read(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_read)
263 switch (fileio->location)
266 return fileio_local_read(fileio, size, buffer, size_read);
269 ERROR("BUG: should never get here");
274 int fileio_read_u32(fileio_t *fileio, u32 *data)
280 switch (fileio->location)
283 if ((retval = fileio_local_read(fileio, 4, buf, &size_read)) != ERROR_OK)
285 *data = be_to_h_u32(buf);
288 ERROR("BUG: should never get here");
295 int fileio_local_fgets(fileio_t *fileio, u32 size, u8 *buffer)
297 fileio_local_t *fileio_local = fileio->location_private;
299 if( fgets(buffer, size, fileio_local->file) == NULL)
300 return ERROR_FILEIO_OPERATION_FAILED;
305 int fileio_fgets(fileio_t *fileio, u32 size, u8 *buffer)
307 switch (fileio->location)
310 return fileio_local_fgets(fileio, size, buffer);
313 ERROR("BUG: should never get here");
318 int fileio_local_write(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_written)
320 fileio_local_t *fileio_local = fileio->location_private;
322 *size_written = fwrite(buffer, 1, size, fileio_local->file);
327 int fileio_write(fileio_t *fileio, u32 size, u8 *buffer, u32 *size_written)
331 switch (fileio->location)
334 retval = fileio_local_write(fileio, size, buffer, size_written);
337 ERROR("BUG: should never get here");
341 if (retval == ERROR_OK)
342 fileio->size += *size_written;
347 int fileio_write_u32(fileio_t *fileio, u32 data)
353 h_u32_to_be(buf, data);
355 switch (fileio->location)
358 if ((retval = fileio_local_write(fileio, 4, buf, &size_written)) != ERROR_OK)
362 ERROR("BUG: should never get here");