Annotation of embedaddon/php/ext/zip/lib/zip_source_buffer.c, revision 1.1.1.2
1.1 misho 1: /*
2: zip_source_buffer.c -- create zip data source from buffer
1.1.1.2 ! misho 3: Copyright (C) 1999-2009 Dieter Baron and Thomas Klausner
1.1 misho 4:
5: This file is part of libzip, a library to manipulate ZIP archives.
6: The authors can be contacted at <libzip@nih.at>
7:
8: Redistribution and use in source and binary forms, with or without
9: modification, are permitted provided that the following conditions
10: are met:
11: 1. Redistributions of source code must retain the above copyright
12: notice, this list of conditions and the following disclaimer.
13: 2. Redistributions in binary form must reproduce the above copyright
14: notice, this list of conditions and the following disclaimer in
15: the documentation and/or other materials provided with the
16: distribution.
17: 3. The names of the authors may not be used to endorse or promote
18: products derived from this software without specific prior
19: written permission.
20:
21: THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
22: OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23: WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
25: DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
27: GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
29: IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
30: OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
31: IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: */
33:
34:
35:
36: #include <stdlib.h>
37: #include <string.h>
38:
39: #include "zipint.h"
40:
41: struct read_data {
42: const char *buf, *data, *end;
43: time_t mtime;
44: int freep;
45: };
46:
1.1.1.2 ! misho 47: static zip_int64_t read_data(void *, void *, zip_uint64_t, enum zip_source_cmd);
1.1 misho 48:
49:
50:
51: ZIP_EXTERN(struct zip_source *)
1.1.1.2 ! misho 52: zip_source_buffer(struct zip *za, const void *data, zip_uint64_t len, int freep)
1.1 misho 53: {
54: struct read_data *f;
55: struct zip_source *zs;
56:
57: if (za == NULL)
58: return NULL;
59:
1.1.1.2 ! misho 60: if (data == NULL && len > 0) {
1.1 misho 61: _zip_error_set(&za->error, ZIP_ER_INVAL, 0);
62: return NULL;
63: }
64:
65: if ((f=(struct read_data *)malloc(sizeof(*f))) == NULL) {
66: _zip_error_set(&za->error, ZIP_ER_MEMORY, 0);
67: return NULL;
68: }
69:
70: f->data = (const char *)data;
71: f->end = ((const char *)data)+len;
72: f->freep = freep;
73: f->mtime = time(NULL);
74:
75: if ((zs=zip_source_function(za, read_data, f)) == NULL) {
76: free(f);
77: return NULL;
78: }
79:
80: return zs;
81: }
82:
83:
84:
1.1.1.2 ! misho 85: static zip_int64_t
! 86: read_data(void *state, void *data, zip_uint64_t len, enum zip_source_cmd cmd)
1.1 misho 87: {
88: struct read_data *z;
89: char *buf;
1.1.1.2 ! misho 90: zip_uint64_t n;
1.1 misho 91:
92: z = (struct read_data *)state;
93: buf = (char *)data;
94:
95: switch (cmd) {
96: case ZIP_SOURCE_OPEN:
97: z->buf = z->data;
98: return 0;
99:
100: case ZIP_SOURCE_READ:
1.1.1.2 ! misho 101: /* XXX: return error if (len > ZIP_INT64_MAX) */
! 102:
1.1 misho 103: n = z->end - z->buf;
104: if (n > len)
105: n = len;
106:
107: if (n) {
108: memcpy(buf, z->buf, n);
109: z->buf += n;
110: }
111:
112: return n;
113:
114: case ZIP_SOURCE_CLOSE:
115: return 0;
116:
117: case ZIP_SOURCE_STAT:
118: {
119: struct zip_stat *st;
120:
121: if (len < sizeof(*st))
122: return -1;
123:
124: st = (struct zip_stat *)data;
125:
126: zip_stat_init(st);
127: st->mtime = z->mtime;
128: st->size = z->end - z->data;
1.1.1.2 ! misho 129: st->comp_size = st->size;
! 130: st->comp_method = ZIP_CM_STORE;
! 131: st->encryption_method = ZIP_EM_NONE;
! 132: st->valid = ZIP_STAT_MTIME|ZIP_STAT_SIZE|ZIP_STAT_COMP_SIZE
! 133: |ZIP_STAT_COMP_METHOD|ZIP_STAT_ENCRYPTION_METHOD;
1.1 misho 134:
135: return sizeof(*st);
136: }
137:
138: case ZIP_SOURCE_ERROR:
139: {
140: int *e;
141:
142: if (len < sizeof(int)*2)
143: return -1;
144:
145: e = (int *)data;
146: e[0] = e[1] = 0;
147: }
148: return sizeof(int)*2;
149:
150: case ZIP_SOURCE_FREE:
151: if (z->freep) {
152: free((void *)z->data);
153: z->data = NULL;
154: }
155: free(z);
156: return 0;
157:
158: default:
159: ;
160: }
161:
162: return -1;
163: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>