The Tor Browser / file comparison
comparison: security/nss/lib/base/item.c
security/nss/lib/base/item.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:4005a61cb1c3 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 /* | |
| 6 * item.c | |
| 7 * | |
| 8 * This contains some item-manipulation code. | |
| 9 */ | |
| 10 | |
| 11 #ifndef BASE_H | |
| 12 #include "base.h" | |
| 13 #endif /* BASE_H */ | |
| 14 | |
| 15 /* | |
| 16 * nssItem_Create | |
| 17 * | |
| 18 * -- fgmr comments -- | |
| 19 * | |
| 20 * The error may be one of the following values: | |
| 21 * NSS_ERROR_INVALID_ARENA | |
| 22 * NSS_ERROR_NO_MEMORY | |
| 23 * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD | |
| 24 * NSS_ERROR_INVALID_POINTER | |
| 25 * | |
| 26 * Return value: | |
| 27 * A pointer to an NSSItem upon success | |
| 28 * NULL upon failure | |
| 29 */ | |
| 30 | |
| 31 NSS_IMPLEMENT NSSItem * | |
| 32 nssItem_Create | |
| 33 ( | |
| 34 NSSArena *arenaOpt, | |
| 35 NSSItem *rvOpt, | |
| 36 PRUint32 length, | |
| 37 const void *data | |
| 38 ) | |
| 39 { | |
| 40 NSSItem *rv = (NSSItem *)NULL; | |
| 41 | |
| 42 #ifdef DEBUG | |
| 43 if( (NSSArena *)NULL != arenaOpt ) { | |
| 44 if( PR_SUCCESS != nssArena_verifyPointer(arenaOpt) ) { | |
| 45 return (NSSItem *)NULL; | |
| 46 } | |
| 47 } | |
| 48 | |
| 49 if( (const void *)NULL == data ) { | |
| 50 if( length > 0 ) { | |
| 51 nss_SetError(NSS_ERROR_INVALID_POINTER); | |
| 52 return (NSSItem *)NULL; | |
| 53 } | |
| 54 } | |
| 55 #endif /* DEBUG */ | |
| 56 | |
| 57 if( (NSSItem *)NULL == rvOpt ) { | |
| 58 rv = (NSSItem *)nss_ZNEW(arenaOpt, NSSItem); | |
| 59 if( (NSSItem *)NULL == rv ) { | |
| 60 goto loser; | |
| 61 } | |
| 62 } else { | |
| 63 rv = rvOpt; | |
| 64 } | |
| 65 | |
| 66 rv->size = length; | |
| 67 rv->data = nss_ZAlloc(arenaOpt, length); | |
| 68 if( (void *)NULL == rv->data ) { | |
| 69 goto loser; | |
| 70 } | |
| 71 | |
| 72 if( length > 0 ) { | |
| 73 (void)nsslibc_memcpy(rv->data, data, length); | |
| 74 } | |
| 75 | |
| 76 return rv; | |
| 77 | |
| 78 loser: | |
| 79 if( rv != rvOpt ) { | |
| 80 nss_ZFreeIf(rv); | |
| 81 } | |
| 82 | |
| 83 return (NSSItem *)NULL; | |
| 84 } | |
| 85 | |
| 86 NSS_IMPLEMENT void | |
| 87 nssItem_Destroy | |
| 88 ( | |
| 89 NSSItem *item | |
| 90 ) | |
| 91 { | |
| 92 nss_ClearErrorStack(); | |
| 93 | |
| 94 nss_ZFreeIf(item->data); | |
| 95 nss_ZFreeIf(item); | |
| 96 | |
| 97 } | |
| 98 | |
| 99 /* | |
| 100 * nssItem_Duplicate | |
| 101 * | |
| 102 * -- fgmr comments -- | |
| 103 * | |
| 104 * The error may be one of the following values: | |
| 105 * NSS_ERROR_INVALID_ARENA | |
| 106 * NSS_ERROR_NO_MEMORY | |
| 107 * NSS_ERROR_ARENA_MARKED_BY_ANOTHER_THREAD | |
| 108 * NSS_ERROR_INVALID_ITEM | |
| 109 * | |
| 110 * Return value: | |
| 111 * A pointer to an NSSItem upon success | |
| 112 * NULL upon failure | |
| 113 */ | |
| 114 | |
| 115 NSS_IMPLEMENT NSSItem * | |
| 116 nssItem_Duplicate | |
| 117 ( | |
| 118 NSSItem *obj, | |
| 119 NSSArena *arenaOpt, | |
| 120 NSSItem *rvOpt | |
| 121 ) | |
| 122 { | |
| 123 #ifdef DEBUG | |
| 124 if( (NSSArena *)NULL != arenaOpt ) { | |
| 125 if( PR_SUCCESS != nssArena_verifyPointer(arenaOpt) ) { | |
| 126 return (NSSItem *)NULL; | |
| 127 } | |
| 128 } | |
| 129 | |
| 130 if( (NSSItem *)NULL == obj ) { | |
| 131 nss_SetError(NSS_ERROR_INVALID_ITEM); | |
| 132 return (NSSItem *)NULL; | |
| 133 } | |
| 134 #endif /* DEBUG */ | |
| 135 | |
| 136 return nssItem_Create(arenaOpt, rvOpt, obj->size, obj->data); | |
| 137 } | |
| 138 | |
| 139 #ifdef DEBUG | |
| 140 /* | |
| 141 * nssItem_verifyPointer | |
| 142 * | |
| 143 * -- fgmr comments -- | |
| 144 * | |
| 145 * The error may be one of the following values: | |
| 146 * NSS_ERROR_INVALID_ITEM | |
| 147 * | |
| 148 * Return value: | |
| 149 * PR_SUCCESS upon success | |
| 150 * PR_FAILURE upon failure | |
| 151 */ | |
| 152 | |
| 153 NSS_IMPLEMENT PRStatus | |
| 154 nssItem_verifyPointer | |
| 155 ( | |
| 156 const NSSItem *item | |
| 157 ) | |
| 158 { | |
| 159 if( ((const NSSItem *)NULL == item) || | |
| 160 (((void *)NULL == item->data) && (item->size > 0)) ) { | |
| 161 nss_SetError(NSS_ERROR_INVALID_ITEM); | |
| 162 return PR_FAILURE; | |
| 163 } | |
| 164 | |
| 165 return PR_SUCCESS; | |
| 166 } | |
| 167 #endif /* DEBUG */ | |
| 168 | |
| 169 /* | |
| 170 * nssItem_Equal | |
| 171 * | |
| 172 * -- fgmr comments -- | |
| 173 * | |
| 174 * The error may be one of the following values: | |
| 175 * NSS_ERROR_INVALID_ITEM | |
| 176 * | |
| 177 * Return value: | |
| 178 * PR_TRUE if the items are identical | |
| 179 * PR_FALSE if they aren't | |
| 180 * PR_FALSE upon error | |
| 181 */ | |
| 182 | |
| 183 NSS_IMPLEMENT PRBool | |
| 184 nssItem_Equal | |
| 185 ( | |
| 186 const NSSItem *one, | |
| 187 const NSSItem *two, | |
| 188 PRStatus *statusOpt | |
| 189 ) | |
| 190 { | |
| 191 if( (PRStatus *)NULL != statusOpt ) { | |
| 192 *statusOpt = PR_SUCCESS; | |
| 193 } | |
| 194 | |
| 195 if( ((const NSSItem *)NULL == one) && ((const NSSItem *)NULL == two) ) { | |
| 196 return PR_TRUE; | |
| 197 } | |
| 198 | |
| 199 if( ((const NSSItem *)NULL == one) || ((const NSSItem *)NULL == two) ) { | |
| 200 return PR_FALSE; | |
| 201 } | |
| 202 | |
| 203 if( one->size != two->size ) { | |
| 204 return PR_FALSE; | |
| 205 } | |
| 206 | |
| 207 return nsslibc_memequal(one->data, two->data, one->size, statusOpt); | |
| 208 } |
