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25535cbe | 1 | |
9cef6668 | 2 | /* |
47f6e231 | 3 | * $Id: store_swapmeta.cc,v 1.26 2007/08/13 17:20:51 hno Exp $ |
9cef6668 | 4 | * |
5 | * DEBUG: section 20 Storage Manager Swapfile Metadata | |
6 | * AUTHOR: Kostas Anagnostakis | |
7 | * | |
2b6662ba | 8 | * SQUID Web Proxy Cache http://www.squid-cache.org/ |
9cef6668 | 9 | * ---------------------------------------------------------- |
10 | * | |
2b6662ba | 11 | * Squid is the result of efforts by numerous individuals from |
12 | * the Internet community; see the CONTRIBUTORS file for full | |
13 | * details. Many organizations have provided support for Squid's | |
14 | * development; see the SPONSORS file for full details. Squid is | |
15 | * Copyrighted (C) 2001 by the Regents of the University of | |
16 | * California; see the COPYRIGHT file for full details. Squid | |
17 | * incorporates software developed and/or copyrighted by other | |
18 | * sources; see the CREDITS file for full details. | |
9cef6668 | 19 | * |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2 of the License, or | |
23 | * (at your option) any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; if not, write to the Free Software | |
32 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. | |
33 | * | |
34 | */ | |
35 | ||
f09f5b26 | 36 | #include "squid.h" |
e6ccf245 | 37 | #include "Store.h" |
528b2c61 | 38 | #include "MemObject.h" |
39 | #include "StoreMeta.h" | |
40 | #include "StoreMetaUnpacker.h" | |
f09f5b26 | 41 | |
69c01cd7 | 42 | void |
43 | storeSwapTLVFree(tlv * n) | |
f09f5b26 | 44 | { |
69c01cd7 | 45 | tlv *t; |
62e76326 | 46 | |
69c01cd7 | 47 | while ((t = n) != NULL) { |
62e76326 | 48 | n = t->next; |
49 | xfree(t->value); | |
00d77d6b | 50 | delete t; |
f09f5b26 | 51 | } |
f09f5b26 | 52 | } |
53 | ||
69c01cd7 | 54 | /* |
55 | * Build a TLV list for a StoreEntry | |
56 | */ | |
57 | tlv * | |
58 | storeSwapMetaBuild(StoreEntry * e) | |
f09f5b26 | 59 | { |
69c01cd7 | 60 | tlv *TLV = NULL; /* we'll return this */ |
61 | tlv **T = &TLV; | |
62 | const char *url; | |
f66a9ef4 | 63 | const char *vary; |
10602161 | 64 | assert(e->mem_obj != NULL); |
69c01cd7 | 65 | assert(e->swap_status == SWAPOUT_WRITING); |
3900307b | 66 | url = e->url(); |
bf8fe701 | 67 | debugs(20, 3, "storeSwapMetaBuild: " << url ); |
528b2c61 | 68 | tlv *t = StoreMeta::Factory (STORE_META_KEY,MD5_DIGEST_CHARS, e->key); |
62e76326 | 69 | |
528b2c61 | 70 | if (!t) { |
62e76326 | 71 | storeSwapTLVFree(TLV); |
72 | return NULL; | |
528b2c61 | 73 | } |
62e76326 | 74 | |
528b2c61 | 75 | T = StoreMeta::Add(T, t); |
47f6e231 | 76 | t = StoreMeta::Factory(STORE_META_STD_LFS,STORE_HDR_METASIZE,&e->timestamp); |
62e76326 | 77 | |
528b2c61 | 78 | if (!t) { |
62e76326 | 79 | storeSwapTLVFree(TLV); |
80 | return NULL; | |
528b2c61 | 81 | } |
62e76326 | 82 | |
528b2c61 | 83 | T = StoreMeta::Add(T, t); |
84 | t = StoreMeta::Factory(STORE_META_URL, strlen(url) + 1, url); | |
62e76326 | 85 | |
528b2c61 | 86 | if (!t) { |
62e76326 | 87 | storeSwapTLVFree(TLV); |
88 | return NULL; | |
528b2c61 | 89 | } |
62e76326 | 90 | |
528b2c61 | 91 | T = StoreMeta::Add(T, t); |
f66a9ef4 | 92 | vary = e->mem_obj->vary_headers; |
62e76326 | 93 | |
528b2c61 | 94 | if (vary) { |
62e76326 | 95 | t =StoreMeta::Factory(STORE_META_VARY_HEADERS, strlen(vary) + 1, vary); |
96 | ||
97 | if (!t) { | |
98 | storeSwapTLVFree(TLV); | |
99 | return NULL; | |
100 | } | |
101 | ||
102 | StoreMeta::Add (T, t); | |
528b2c61 | 103 | } |
62e76326 | 104 | |
69c01cd7 | 105 | return TLV; |
f09f5b26 | 106 | } |
107 | ||
69c01cd7 | 108 | char * |
109 | storeSwapMetaPack(tlv * tlv_list, int *length) | |
f09f5b26 | 110 | { |
e3ef2b09 | 111 | int buflen = 0; |
69c01cd7 | 112 | tlv *t; |
113 | off_t j = 0; | |
114 | char *buf; | |
115 | assert(length != NULL); | |
116 | buflen++; /* STORE_META_OK */ | |
117 | buflen += sizeof(int); /* size of header to follow */ | |
62e76326 | 118 | |
69c01cd7 | 119 | for (t = tlv_list; t; t = t->next) |
62e76326 | 120 | buflen += sizeof(char) + sizeof(int) + t->length; |
121 | ||
e6ccf245 | 122 | buf = (char *)xmalloc(buflen); |
62e76326 | 123 | |
69c01cd7 | 124 | buf[j++] = (char) STORE_META_OK; |
62e76326 | 125 | |
e3ef2b09 | 126 | xmemcpy(&buf[j], &buflen, sizeof(int)); |
62e76326 | 127 | |
e3ef2b09 | 128 | j += sizeof(int); |
62e76326 | 129 | |
69c01cd7 | 130 | for (t = tlv_list; t; t = t->next) { |
62e76326 | 131 | buf[j++] = t->getType(); |
132 | xmemcpy(&buf[j], &t->length, sizeof(int)); | |
133 | j += sizeof(int); | |
134 | xmemcpy(&buf[j], t->value, t->length); | |
135 | j += t->length; | |
f09f5b26 | 136 | } |
62e76326 | 137 | |
e3ef2b09 | 138 | assert((int) j == buflen); |
139 | *length = buflen; | |
69c01cd7 | 140 | return buf; |
f09f5b26 | 141 | } |