[94605f2] | 1 | /* abac_keyid_map.c */ |
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| 2 | |
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| 3 | |
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| 4 | #include "abac.h" |
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| 5 | #include "abac_util.h" |
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| 6 | #include "uthash.h" |
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| 7 | |
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| 8 | struct abac_keyid_mapping_t { |
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| 9 | char *key; |
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| 10 | char *value; |
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| 11 | UT_hash_handle hh; |
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| 12 | }; |
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| 13 | |
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| 14 | struct abac_keyid_map_t { |
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| 15 | abac_keyid_mapping_t *keys; |
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| 16 | abac_keyid_mapping_t *nicknames; |
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| 17 | }; |
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| 18 | |
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| 19 | abac_keyid_mapping_t *abac_keyid_mapping_new(char *k, char *v) { |
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| 20 | abac_keyid_mapping_t *m = NULL; |
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| 21 | |
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| 22 | if ( !k || ! v) return NULL; |
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| 23 | m = abac_xmalloc(sizeof(abac_keyid_mapping_t)); |
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| 24 | m->key = abac_xstrdup(k); |
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| 25 | m->value = abac_xstrdup(v); |
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| 26 | |
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| 27 | return m; |
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| 28 | } |
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| 29 | |
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| 30 | void abac_keyid_mapping_free(abac_keyid_mapping_t *m) { |
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| 31 | if ( m->key ) free(m->key); |
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| 32 | if ( m->value ) free(m->value); |
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| 33 | free(m); |
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| 34 | } |
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| 35 | |
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| 36 | abac_keyid_map_t *abac_keyid_map_new() { |
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| 37 | abac_keyid_map_t *m = abac_xmalloc(sizeof(abac_keyid_map_t)); |
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| 38 | |
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| 39 | m->keys = NULL; |
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| 40 | m->nicknames = NULL; |
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| 41 | return m; |
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| 42 | } |
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| 43 | |
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| 44 | abac_keyid_map_t *abac_keyid_map_dup(abac_keyid_map_t *old) { |
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| 45 | abac_keyid_map_t *m = abac_xmalloc(sizeof(abac_keyid_map_t)); |
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| 46 | abac_keyid_mapping_t *me = NULL; |
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| 47 | |
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| 48 | m->keys = NULL; |
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| 49 | m->nicknames = NULL; |
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| 50 | |
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| 51 | for ( me = old->keys; me ; me = me->hh.next) |
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| 52 | abac_keyid_map_add_nickname(m, me->key, me->value); |
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| 53 | |
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| 54 | return m; |
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| 55 | } |
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| 56 | |
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| 57 | void abac_keyid_map_free(abac_keyid_map_t *m) { |
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| 58 | abac_keyid_mapping_t *me = NULL; |
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| 59 | while ( (me = m->keys) ) { |
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| 60 | HASH_DEL(m->keys, me); |
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| 61 | abac_keyid_mapping_free(me); |
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| 62 | } |
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| 63 | while ( (me = m->nicknames) ) { |
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| 64 | HASH_DEL(m->nicknames, me); |
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| 65 | abac_keyid_mapping_free(me); |
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| 66 | } |
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| 67 | free(m); |
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| 68 | } |
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| 69 | |
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| 70 | char *abac_keyid_map_key_to_nickname(abac_keyid_map_t *m, char *key) { |
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| 71 | abac_keyid_mapping_t *me = NULL; |
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| 72 | |
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[b7e77df] | 73 | if ( !key || !m) return 0; |
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[94605f2] | 74 | HASH_FIND_STR(m->keys, key, me); |
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| 75 | |
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| 76 | if ( me ) return me->value; |
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| 77 | else return NULL; |
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| 78 | } |
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| 79 | |
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| 80 | char *abac_keyid_map_nickname_to_key(abac_keyid_map_t *m, char *nick) { |
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| 81 | abac_keyid_mapping_t *me = NULL; |
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| 82 | |
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[b7e77df] | 83 | if ( !nick || !m ) return 0; |
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[94605f2] | 84 | HASH_FIND_STR(m->nicknames, nick, me); |
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| 85 | |
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| 86 | if ( me ) return me->value; |
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| 87 | else return NULL; |
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| 88 | } |
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| 89 | |
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| 90 | int abac_keyid_map_remove_keyid(abac_keyid_map_t *m, char *key) { |
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| 91 | abac_keyid_mapping_t *me = NULL; |
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| 92 | abac_keyid_mapping_t *nne = NULL; |
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| 93 | |
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| 94 | HASH_FIND_STR(m->keys, key, me); |
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| 95 | if ( !me ) return 0; |
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| 96 | HASH_FIND_STR(m->nicknames, me->value, nne); |
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| 97 | /* delete from keys */ |
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| 98 | HASH_DEL(m->keys, me); |
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| 99 | abac_keyid_mapping_free(me); |
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| 100 | /* If we found a nickname, delete that too */ |
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| 101 | if ( nne ) { |
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| 102 | HASH_DEL(m->nicknames, nne); |
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| 103 | abac_keyid_mapping_free(nne); |
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| 104 | } |
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| 105 | return 1; |
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| 106 | } |
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| 107 | |
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| 108 | |
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| 109 | int abac_keyid_map_add_nickname(abac_keyid_map_t *m, char *key, char *nick) { |
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| 110 | abac_keyid_mapping_t *me = NULL; |
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| 111 | char *name = NULL; |
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| 112 | int i =0; |
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| 113 | |
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| 114 | if ( !key || !nick) return 0; |
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| 115 | if (abac_keyid_map_key_to_nickname(m, key)) return 0; |
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| 116 | |
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| 117 | if ( !(name = abac_xmalloc(strlen(nick)+10))) return 0; |
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| 118 | sprintf(name, "%s", nick); |
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| 119 | |
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| 120 | while (abac_keyid_map_nickname_to_key(m, name) && i < 1000) |
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| 121 | sprintf(name, "%s%05d", nick, i++); |
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| 122 | |
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| 123 | if ( i < 1000 ) { |
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| 124 | me = abac_keyid_mapping_new(key, name); |
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| 125 | HASH_ADD_KEYPTR(hh, m->keys, me->key, strlen(me->key), me); |
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| 126 | me = abac_keyid_mapping_new(name, key); |
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| 127 | HASH_ADD_KEYPTR(hh, m->nicknames, me->key, strlen(me->key), me); |
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| 128 | } |
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| 129 | free(name); |
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| 130 | return 1; |
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| 131 | } |
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| 132 | |
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| 133 | static int is_sep(char *c) { |
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| 134 | switch (*c) { |
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| 135 | case ' ': |
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| 136 | case '_': |
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| 137 | case '.': |
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| 138 | return 1; |
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| 139 | default: |
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| 140 | return 0; |
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| 141 | } |
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| 142 | } |
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| 143 | |
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| 144 | static char *abac_keyid_map_replace(abac_keyid_map_t *m, char *s, |
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| 145 | char *(*lookup)(abac_keyid_map_t *, char *)) { |
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| 146 | int lim = strlen(s); |
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| 147 | int i; |
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| 148 | int sz = 0; |
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| 149 | char *rv = NULL; |
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| 150 | char *start = s; |
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| 151 | char old = '\0'; |
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| 152 | char *repl = NULL; |
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| 153 | char *newrv = NULL; |
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| 154 | int newlen = 0; |
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| 155 | |
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| 156 | for ( i = 0; i < lim; i++ ) { |
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| 157 | if ( is_sep(s+i) ) { |
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| 158 | old = s[i]; |
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| 159 | s[i] = '\0'; |
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| 160 | |
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| 161 | if ( !(repl = lookup(m, start)) ) repl = start; |
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| 162 | |
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| 163 | newlen = strlen(repl)+1; |
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| 164 | |
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| 165 | if ( !(newrv = realloc(rv, sz + newlen +1)) ) { |
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| 166 | if ( rv ) free(rv); |
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| 167 | return NULL; |
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| 168 | } else { |
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| 169 | rv = newrv; |
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| 170 | if (sz == 0 ) |
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| 171 | rv[0] = '\0'; |
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| 172 | sz += newlen; |
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| 173 | } |
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| 174 | strncat(rv, repl, newlen); |
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| 175 | rv[sz-1] = old; |
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| 176 | rv[sz] = '\0'; |
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| 177 | s[i] = old; |
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| 178 | start = s+i+1; |
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| 179 | } |
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| 180 | } |
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| 181 | if ( start != s+i ) { |
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| 182 | if ( !(repl = lookup(m, start)) ) repl = start; |
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| 183 | |
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| 184 | newlen = strlen(repl); |
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| 185 | |
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| 186 | if ( !(newrv = realloc(rv, sz + newlen)) ) { |
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| 187 | if ( rv ) free(rv); |
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| 188 | return NULL; |
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| 189 | } else { |
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| 190 | rv = newrv; |
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| 191 | if ( sz == 0) |
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| 192 | rv[0] = '\0'; |
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| 193 | sz += newlen; |
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| 194 | } |
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| 195 | strncat(rv, repl, newlen); |
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| 196 | } |
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| 197 | return rv; |
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| 198 | } |
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| 199 | |
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| 200 | char *abac_keyid_map_expand_key(abac_keyid_map_t *m, char *s) { |
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| 201 | return abac_keyid_map_replace(m , s, abac_keyid_map_key_to_nickname); |
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| 202 | } |
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| 203 | |
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| 204 | char *abac_keyid_map_expand_nickname(abac_keyid_map_t *m, char *s) { |
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| 205 | return abac_keyid_map_replace(m , s, abac_keyid_map_nickname_to_key); |
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| 206 | } |
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