2 * Unix SMB/CIFS implementation.
3 * SMB parameters and setup
4 * Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
6 * Added afdgets() Jelmer Vernooij 2005
8 * This program is free software; you can redistribute it and/or modify it under
9 * the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 3 of the License, or (at your option)
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
18 * You should have received a copy of the GNU General Public License along with
19 * this program; if not, see <http://www.gnu.org/licenses/>.
23 #include "system/shmem.h"
24 #include "system/filesys.h"
26 #include "lib/util/samba_util.h"
27 #include "lib/util/debug.h"
30 * Read one line (data until next newline or eof) and allocate it
32 _PUBLIC_ char *afdgets(int fd, TALLOC_CTX *mem_ctx, size_t hint)
35 ssize_t alloc_size = 0, offset = 0, ret;
38 if (hint <= 0) hint = 0x100;
43 data = talloc_realloc(mem_ctx, data, char, alloc_size);
48 ret = read(fd, data + offset, hint);
60 for (p = 0; p < ret; p++) {
61 if (data[offset + p] == '\n')
66 data[offset + p] = '\0';
68 /* Go back to position of newline */
69 lseek(fd, p - ret + 1, SEEK_CUR);
75 } while (ret == hint);
84 load a file into memory from a fd.
86 _PUBLIC_ char *fd_load(int fd, size_t *psize, size_t maxsize, TALLOC_CTX *mem_ctx)
92 if (fstat(fd, &sbuf) != 0) return NULL;
97 size = MIN(size, maxsize);
100 p = (char *)talloc_size(mem_ctx, size+1);
103 if (read(fd, p, size) != size) {
109 if (psize) *psize = size;
115 load a file into memory
117 _PUBLIC_ char *file_load(const char *fname, size_t *size, size_t maxsize, TALLOC_CTX *mem_ctx)
122 if (!fname || !*fname) return NULL;
124 fd = open(fname,O_RDONLY);
125 if (fd == -1) return NULL;
127 p = fd_load(fd, size, maxsize, mem_ctx);
135 parse a buffer into lines
136 'p' will be freed on error, and otherwise will be made a child of the returned array
138 char **file_lines_parse(char *p, size_t size, int *numlines, TALLOC_CTX *mem_ctx)
145 for (s = p, i=0; s < p+size; s++) {
146 if (s[0] == '\n') i++;
149 ret = talloc_zero_array(mem_ctx, char *, i+2);
155 talloc_steal(ret, p);
158 for (s = p, i=0; s < p+size; s++) {
164 if (s[0] == '\r') s[0] = 0;
167 /* remove any blank lines at the end */
168 while (i > 0 && ret[i-1][0] == 0) {
172 if (numlines) *numlines = i;
179 load a file into memory and return an array of pointers to lines in the file
180 must be freed with talloc_free().
182 _PUBLIC_ char **file_lines_load(const char *fname, int *numlines, size_t maxsize, TALLOC_CTX *mem_ctx)
187 p = file_load(fname, &size, maxsize, mem_ctx);
190 return file_lines_parse(p, size, numlines, mem_ctx);
194 load a fd into memory and return an array of pointers to lines in the file
195 must be freed with talloc_free(). If convert is true calls unix_to_dos on
198 _PUBLIC_ char **fd_lines_load(int fd, int *numlines, size_t maxsize, TALLOC_CTX *mem_ctx)
203 p = fd_load(fd, &size, maxsize, mem_ctx);
206 return file_lines_parse(p, size, numlines, mem_ctx);
209 _PUBLIC_ bool file_save_mode(const char *fname, const void *packet,
210 size_t length, mode_t mode)
213 fd = open(fname, O_WRONLY|O_CREAT|O_TRUNC, mode);
217 if (write(fd, packet, length) != (size_t)length) {
226 save a lump of data into a file. Mostly used for debugging
228 _PUBLIC_ bool file_save(const char *fname, const void *packet, size_t length)
230 return file_save_mode(fname, packet, length, 0644);
233 _PUBLIC_ int vfdprintf(int fd, const char *format, va_list ap)
240 len = vasprintf(&p, format, ap2);
242 if (len <= 0) return len;
243 ret = write(fd, p, len);
248 _PUBLIC_ int fdprintf(int fd, const char *format, ...)
253 va_start(ap, format);
254 ret = vfdprintf(fd, format, ap);
261 compare two files, return true if the two files have the same content
263 bool file_compare(const char *path1, const char *path2)
267 TALLOC_CTX *mem_ctx = talloc_new(NULL);
269 p1 = file_load(path1, &size1, 0, mem_ctx);
270 p2 = file_load(path2, &size2, 0, mem_ctx);
271 if (!p1 || !p2 || size1 != size2) {
272 talloc_free(mem_ctx);
275 if (memcmp(p1, p2, size1) != 0) {
276 talloc_free(mem_ctx);
279 talloc_free(mem_ctx);