comparison: libpurple/ciphers/sha256hash.c
libpurple/ciphers/sha256hash.c
- changeset 38887
- 826f5da7b56c
- parent 38886
- c1fb4e53da4e
- parent 38341
- 3da74e727e78
- child 38888
- 8bcae3a0b165
equal
deleted
inserted
replaced
| 38886:c1fb4e53da4e | 38887:826f5da7b56c |
|---|---|
| 1 /* | |
| 2 * purple | |
| 3 * | |
| 4 * Purple is the legal property of its developers, whose names are too numerous | |
| 5 * to list here. Please refer to the COPYRIGHT file distributed with this | |
| 6 * source distribution. | |
| 7 * | |
| 8 * This program is free software; you can redistribute it and/or modify | |
| 9 * it under the terms of the GNU General Public License as published by | |
| 10 * the Free Software Foundation; either version 2 of the License, or | |
| 11 * (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, | |
| 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 * GNU General Public License for more details. | |
| 17 * | |
| 18 * You should have received a copy of the GNU General Public License | |
| 19 * along with this program; if not, write to the Free Software | |
| 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA | |
| 21 */ | |
| 22 #include "internal.h" | |
| 23 #include "sha256hash.h" | |
| 24 | |
| 25 /******************************************************************************* | |
| 26 * Structs | |
| 27 ******************************************************************************/ | |
| 28 #define PURPLE_SHA256_HASH_GET_PRIVATE(obj) \ | |
| 29 (G_TYPE_INSTANCE_GET_PRIVATE((obj), PURPLE_TYPE_SHA256_HASH, PurpleSHA256HashPrivate)) | |
| 30 | |
| 31 typedef struct { | |
| 32 GChecksum *checksum; | |
| 33 } PurpleSHA256HashPrivate; | |
| 34 | |
| 35 /****************************************************************************** | |
| 36 * Globals | |
| 37 *****************************************************************************/ | |
| 38 static GObjectClass *parent_class = NULL; | |
| 39 | |
| 40 /****************************************************************************** | |
| 41 * Hash Stuff | |
| 42 *****************************************************************************/ | |
| 43 | |
| 44 static void | |
| 45 purple_sha256_hash_reset(PurpleHash *hash) | |
| 46 { | |
| 47 PurpleSHA256Hash *sha256_hash = PURPLE_SHA256_HASH(hash); | |
| 48 PurpleSHA256HashPrivate *priv = PURPLE_SHA256_HASH_GET_PRIVATE(sha256_hash); | |
| 49 | |
| 50 g_return_if_fail(priv != NULL); | |
| 51 g_return_if_fail(priv->checksum != NULL); | |
| 52 | |
| 53 g_checksum_reset(priv->checksum); | |
| 54 } | |
| 55 | |
| 56 static void | |
| 57 purple_sha256_hash_append(PurpleHash *hash, const guchar *data, | |
| 58 gsize len) | |
| 59 { | |
| 60 PurpleSHA256Hash *sha256_hash = PURPLE_SHA256_HASH(hash); | |
| 61 PurpleSHA256HashPrivate *priv = PURPLE_SHA256_HASH_GET_PRIVATE(sha256_hash); | |
| 62 | |
| 63 g_return_if_fail(priv != NULL); | |
| 64 g_return_if_fail(priv->checksum != NULL); | |
| 65 | |
| 66 while (len >= G_MAXSSIZE) { | |
| 67 g_checksum_update(priv->checksum, data, G_MAXSSIZE); | |
| 68 len -= G_MAXSSIZE; | |
| 69 data += G_MAXSSIZE; | |
| 70 } | |
| 71 | |
| 72 if (len) | |
| 73 g_checksum_update(priv->checksum, data, len); | |
| 74 } | |
| 75 | |
| 76 static gboolean | |
| 77 purple_sha256_hash_digest(PurpleHash *hash, guchar *digest, size_t buff_len) | |
| 78 { | |
| 79 PurpleSHA256Hash *sha256_hash = PURPLE_SHA256_HASH(hash); | |
| 80 PurpleSHA256HashPrivate *priv = PURPLE_SHA256_HASH_GET_PRIVATE(sha256_hash); | |
| 81 | |
| 82 const gssize required_len = g_checksum_type_get_length(G_CHECKSUM_SHA256); | |
| 83 gsize digest_len = buff_len; | |
| 84 | |
| 85 g_return_val_if_fail(priv != NULL, FALSE); | |
| 86 g_return_val_if_fail(priv->checksum != NULL, FALSE); | |
| 87 | |
| 88 g_return_val_if_fail(required_len >= 0, FALSE); | |
| 89 g_return_val_if_fail(buff_len >= (gsize)required_len, FALSE); | |
| 90 | |
| 91 g_checksum_get_digest(priv->checksum, digest, &digest_len); | |
| 92 | |
| 93 if (digest_len != (gsize)required_len) | |
| 94 return FALSE; | |
| 95 | |
| 96 purple_sha256_hash_reset(hash); | |
| 97 | |
| 98 return TRUE; | |
| 99 } | |
| 100 | |
| 101 static size_t | |
| 102 purple_sha256_hash_get_block_size(PurpleHash *hash) | |
| 103 { | |
| 104 return 64; | |
| 105 } | |
| 106 | |
| 107 static size_t | |
| 108 purple_sha256_hash_get_digest_size(PurpleHash *hash) | |
| 109 { | |
| 110 return g_checksum_type_get_length(G_CHECKSUM_SHA256); | |
| 111 } | |
| 112 | |
| 113 /****************************************************************************** | |
| 114 * Object Stuff | |
| 115 *****************************************************************************/ | |
| 116 | |
| 117 static void | |
| 118 purple_sha256_hash_finalize(GObject *obj) | |
| 119 { | |
| 120 PurpleSHA256Hash *sha256_hash = PURPLE_SHA256_HASH(obj); | |
| 121 PurpleSHA256HashPrivate *priv = PURPLE_SHA256_HASH_GET_PRIVATE(sha256_hash); | |
| 122 | |
| 123 if (priv->checksum) | |
| 124 g_checksum_free(priv->checksum); | |
| 125 | |
| 126 parent_class->finalize(obj); | |
| 127 } | |
| 128 | |
| 129 static void | |
| 130 purple_sha256_hash_class_init(PurpleSHA256HashClass *klass) { | |
| 131 GObjectClass *obj_class = G_OBJECT_CLASS(klass); | |
| 132 PurpleHashClass *hash_class = PURPLE_HASH_CLASS(klass); | |
| 133 | |
| 134 parent_class = g_type_class_peek_parent(klass); | |
| 135 | |
| 136 obj_class->finalize = purple_sha256_hash_finalize; | |
| 137 | |
| 138 hash_class->reset = purple_sha256_hash_reset; | |
| 139 hash_class->reset_state = purple_sha256_hash_reset; | |
| 140 hash_class->append = purple_sha256_hash_append; | |
| 141 hash_class->digest = purple_sha256_hash_digest; | |
| 142 hash_class->get_digest_size = purple_sha256_hash_get_digest_size; | |
| 143 hash_class->get_block_size = purple_sha256_hash_get_block_size; | |
| 144 | |
| 145 g_type_class_add_private(klass, sizeof(PurpleSHA256HashPrivate)); | |
| 146 } | |
| 147 | |
| 148 static void | |
| 149 purple_sha256_hash_init(PurpleHash *hash) | |
| 150 { | |
| 151 PurpleSHA256Hash *sha256_hash = PURPLE_SHA256_HASH(hash); | |
| 152 PurpleSHA256HashPrivate *priv = PURPLE_SHA256_HASH_GET_PRIVATE(sha256_hash); | |
| 153 | |
| 154 priv->checksum = g_checksum_new(G_CHECKSUM_SHA256); | |
| 155 | |
| 156 purple_sha256_hash_reset(hash); | |
| 157 } | |
| 158 | |
| 159 /****************************************************************************** | |
| 160 * API | |
| 161 *****************************************************************************/ | |
| 162 GType | |
| 163 purple_sha256_hash_get_type(void) { | |
| 164 static GType type = 0; | |
| 165 | |
| 166 if(type == 0) { | |
| 167 static const GTypeInfo info = { | |
| 168 sizeof(PurpleSHA256HashClass), | |
| 169 NULL, | |
| 170 NULL, | |
| 171 (GClassInitFunc)purple_sha256_hash_class_init, | |
| 172 NULL, | |
| 173 NULL, | |
| 174 sizeof(PurpleSHA256Hash), | |
| 175 0, | |
| 176 (GInstanceInitFunc)purple_sha256_hash_init, | |
| 177 NULL, | |
| 178 }; | |
| 179 | |
| 180 type = g_type_register_static(PURPLE_TYPE_HASH, | |
| 181 "PurpleSHA256Hash", | |
| 182 &info, 0); | |
| 183 } | |
| 184 | |
| 185 return type; | |
| 186 } | |
| 187 | |
| 188 PurpleHash * | |
| 189 purple_sha256_hash_new(void) { | |
| 190 return g_object_new(PURPLE_TYPE_SHA256_HASH, NULL); | |
| 191 } |
