| 1 | /* |
| 2 | * Copyright (C) 2019 - Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com> |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or modify it |
| 5 | * under the terms of the GNU Lesser General Public License, version 2.1 only, |
| 6 | * as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This library is distributed in the hope that it will be useful, but WITHOUT |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License |
| 11 | * for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU Lesser General Public License |
| 14 | * along with this library; if not, write to the Free Software Foundation, |
| 15 | * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 16 | */ |
| 17 | |
| 18 | #include <assert.h> |
| 19 | #include <common/defaults.h> |
| 20 | #include <common/error.h> |
| 21 | #include <common/macros.h> |
| 22 | #include <common/sessiond-comm/sessiond-comm.h> |
| 23 | #include <common/uri.h> |
| 24 | #include <lttng/tracker-internal.h> |
| 25 | #include <stdio.h> |
| 26 | #include <time.h> |
| 27 | |
| 28 | struct lttng_tracker_id *lttng_tracker_id_create(void) |
| 29 | { |
| 30 | struct lttng_tracker_id *id; |
| 31 | |
| 32 | id = zmalloc(sizeof(*id)); |
| 33 | if (!id) { |
| 34 | goto error; |
| 35 | } |
| 36 | |
| 37 | id->type = LTTNG_ID_UNKNOWN; |
| 38 | id->string = NULL; |
| 39 | id->value = -1; |
| 40 | return id; |
| 41 | error: |
| 42 | lttng_tracker_id_destroy(id); |
| 43 | return NULL; |
| 44 | } |
| 45 | |
| 46 | enum lttng_tracker_id_status lttng_tracker_id_set_value( |
| 47 | struct lttng_tracker_id *id, int value) |
| 48 | { |
| 49 | assert(id); |
| 50 | |
| 51 | if (value < 0) { |
| 52 | return LTTNG_TRACKER_ID_STATUS_INVALID; |
| 53 | } |
| 54 | |
| 55 | id->type = LTTNG_ID_VALUE; |
| 56 | id->value = value; |
| 57 | return LTTNG_TRACKER_ID_STATUS_OK; |
| 58 | } |
| 59 | |
| 60 | enum lttng_tracker_id_status lttng_tracker_id_set_string( |
| 61 | struct lttng_tracker_id *id, const char *value) |
| 62 | { |
| 63 | assert(id); |
| 64 | assert(value); |
| 65 | |
| 66 | id->type = LTTNG_ID_STRING; |
| 67 | id->string = strdup(value); |
| 68 | if (id->string == NULL) { |
| 69 | /* No memory left */ |
| 70 | goto error; |
| 71 | } |
| 72 | |
| 73 | return LTTNG_TRACKER_ID_STATUS_OK; |
| 74 | error: |
| 75 | return LTTNG_TRACKER_ID_STATUS_INVALID; |
| 76 | } |
| 77 | |
| 78 | enum lttng_tracker_id_status lttng_tracker_id_set_all( |
| 79 | struct lttng_tracker_id *id) |
| 80 | { |
| 81 | assert(id); |
| 82 | |
| 83 | id->type = LTTNG_ID_ALL; |
| 84 | |
| 85 | return LTTNG_TRACKER_ID_STATUS_OK; |
| 86 | } |
| 87 | |
| 88 | void lttng_tracker_id_destroy(struct lttng_tracker_id *id) |
| 89 | { |
| 90 | if (id == NULL) { |
| 91 | return; |
| 92 | } |
| 93 | |
| 94 | if (id->string != NULL) { |
| 95 | free(id->string); |
| 96 | } |
| 97 | |
| 98 | free(id); |
| 99 | } |
| 100 | |
| 101 | void lttng_tracker_ids_destroy(struct lttng_tracker_id **ids, size_t nr_ids) |
| 102 | { |
| 103 | if (ids == NULL) { |
| 104 | return; |
| 105 | } |
| 106 | |
| 107 | for (int i = 0; i < nr_ids; i++) { |
| 108 | lttng_tracker_id_destroy(ids[i]); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | enum lttng_tracker_id_type lttng_tracker_id_get_type( |
| 113 | const struct lttng_tracker_id *id) |
| 114 | { |
| 115 | assert(id); |
| 116 | return id->type; |
| 117 | } |
| 118 | |
| 119 | enum lttng_tracker_id_status lttng_tracker_id_get_value( |
| 120 | const struct lttng_tracker_id *id, int *value) |
| 121 | { |
| 122 | assert(id); |
| 123 | if (id->type == LTTNG_ID_UNKNOWN) { |
| 124 | return LTTNG_TRACKER_ID_STATUS_UNSET; |
| 125 | } |
| 126 | |
| 127 | if (id->type != LTTNG_ID_VALUE) { |
| 128 | return LTTNG_TRACKER_ID_STATUS_INVALID; |
| 129 | } |
| 130 | |
| 131 | *value = id->value; |
| 132 | return LTTNG_TRACKER_ID_STATUS_OK; |
| 133 | } |
| 134 | |
| 135 | bool lttng_tracker_id_is_equal(const struct lttng_tracker_id *left, |
| 136 | const struct lttng_tracker_id *right) |
| 137 | { |
| 138 | if (left->type != right->type) { |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | switch (left->type) { |
| 143 | case LTTNG_ID_ALL: |
| 144 | return 1; |
| 145 | case LTTNG_ID_VALUE: |
| 146 | if (left->value != right->value) { |
| 147 | return 0; |
| 148 | } |
| 149 | break; |
| 150 | case LTTNG_ID_STRING: |
| 151 | if (strcmp(left->string, right->string) != 0) { |
| 152 | return 0; |
| 153 | } |
| 154 | break; |
| 155 | default: |
| 156 | /* |
| 157 | * Normally this should return true, but comparing unset tracker |
| 158 | * id is "invalid". |
| 159 | */ |
| 160 | return 0; |
| 161 | } |
| 162 | return 1; |
| 163 | } |
| 164 | |
| 165 | struct lttng_tracker_id *lttng_tracker_id_copy( |
| 166 | const struct lttng_tracker_id *orig) |
| 167 | { |
| 168 | struct lttng_tracker_id *copy = NULL; |
| 169 | enum lttng_tracker_id_status status; |
| 170 | |
| 171 | copy = lttng_tracker_id_create(); |
| 172 | if (copy == NULL) { |
| 173 | goto error; |
| 174 | } |
| 175 | |
| 176 | switch (orig->type) { |
| 177 | case LTTNG_ID_ALL: |
| 178 | status = lttng_tracker_id_set_all(copy); |
| 179 | break; |
| 180 | case LTTNG_ID_VALUE: |
| 181 | status = lttng_tracker_id_set_value(copy, orig->value); |
| 182 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { |
| 183 | goto error; |
| 184 | } |
| 185 | break; |
| 186 | case LTTNG_ID_STRING: |
| 187 | status = lttng_tracker_id_set_string(copy, orig->string); |
| 188 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { |
| 189 | goto error; |
| 190 | } |
| 191 | break; |
| 192 | default: |
| 193 | status = LTTNG_TRACKER_ID_STATUS_OK; |
| 194 | break; |
| 195 | } |
| 196 | |
| 197 | if (status != LTTNG_TRACKER_ID_STATUS_OK) { |
| 198 | goto error; |
| 199 | } |
| 200 | |
| 201 | return copy; |
| 202 | error: |
| 203 | lttng_tracker_id_destroy(copy); |
| 204 | return NULL; |
| 205 | } |
| 206 | |
| 207 | enum lttng_tracker_id_status lttng_tracker_id_get_string( |
| 208 | const struct lttng_tracker_id *id, const char **value) |
| 209 | { |
| 210 | assert(id); |
| 211 | if (id->type == LTTNG_ID_UNKNOWN) { |
| 212 | *value = NULL; |
| 213 | return LTTNG_TRACKER_ID_STATUS_UNSET; |
| 214 | } |
| 215 | |
| 216 | if (id->type != LTTNG_ID_STRING) { |
| 217 | *value = NULL; |
| 218 | return LTTNG_TRACKER_ID_STATUS_INVALID; |
| 219 | } |
| 220 | |
| 221 | *value = id->string; |
| 222 | return LTTNG_TRACKER_ID_STATUS_OK; |
| 223 | } |