1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2018 Olaf Wintermann. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #ifndef RESOURCE_H
30 #define RESOURCE_H
31
32 #include "webdav.h"
33 #include "crypto.h"
34 #include <cx/string.h>
35 #include <cx/hash_key.h>
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 typedef struct DavResourceData DavResourceData;
42
43 struct DavResourceData {
44 CxMap *properties;
45 CxList *set;
46 CxList *remove;
47 CxList *crypto_set;
48 CxList *crypto_remove;
49
50 /*
51 * properties encapsulated in a crypto-prop property or NULL
52 */
53 CxMap *crypto_properties;
54
55 /*
56 * char* or stream
57 */
58 void *content;
59 /*
60 * if NULL, content is a char*
61 */
62 dav_read_func read;
63 /*
64 * curl seek func
65 */
66 dav_seek_func seek;
67 /*
68 * content length
69 */
70 size_t length;
71
72 /*
73 * sha256 content hash
74 */
75 char hash[32];
76 };
77
78 /*
79 * read wrapper with integrated hashing
80 */
81 typedef struct {
82 DAV_SHA_CTX *sha;
83 void *stream;
84 dav_read_func read;
85 dav_seek_func seek;
86 int error;
87 } HashStream;
88
89 struct DavInputStream {
90 DavResource *res;
91 CURLM *m;
92 CURL *c;
93 AESDecrypter *dec;
94 char *buffer;
95 size_t alloc;
96 size_t size;
97 size_t pos;
98 int eof;
99 };
100
101 struct DavOutputStream {
102 DavResource *res;
103 CURLM *m;
104 CURL *c;
105 AESEncrypter *enc;
106 HashStream *hstr;
107 const char *buffer;
108 size_t size;
109 size_t pos;
110 int eof;
111 };
112
113 DavResource* dav_resource_new_full(DavSession *sn, const char *parent_path, const char *name, char *href);
114
115 void resource_free_properties(DavSession *sn, CxMap *properties);
116
117 void resource_set_href(DavResource *res, cxstring href);
118
119 void resource_set_info(DavResource *res, const char *href_str);
120 DavResourceData* resource_data_new(DavSession *sn);
121 void resource_add_property(DavResource *res, const char *ns, const char *name, xmlNode *val);
122 void resource_set_crypto_properties(DavResource *res, CxMap *cprops);
123 DavXmlNode* resource_get_property(DavResource *res, const char *ns, const char *name);
124 DavXmlNode* resource_get_encrypted_property(DavResource *res, const char *ns, const char *name);
125 DavXmlNode* resource_get_property_k(DavResource *res, CxHashKey key);
126 DavXmlNode* resource_get_encrypted_property_k(DavResource *res, CxHashKey key);
127 void resource_add_child(DavResource *parent, DavResource *child);
128 void resource_add_ordered_child(DavResource *parent, DavResource *child, CxList *ordercr);
129 int resource_add_crypto_info(DavSession *sn, const char *href, const char *name, const char *hash);
130
131 cxmutstr dav_property_key_a(const CxAllocator *a, const char *ns, const char *name);
132
133 DavXmlNode* create_crypto_prop(DavSession *sn, CxMap *properties);
134 CxMap* parse_crypto_prop(DavSession *sn, DavKey *key, DavXmlNode *node);
135 CxMap* parse_crypto_prop_str(DavSession *sn, DavKey *key, const char *content);
136
137 #ifdef __cplusplus
138 }
139 #endif
140
141 #endif /* RESOURCE_H */
142
143