diff options
Diffstat (limited to 'src/lib/instance_name.c')
| -rw-r--r-- | src/lib/instance_name.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/src/lib/instance_name.c b/src/lib/instance_name.c new file mode 100644 index 00000000..1e61f790 --- /dev/null +++ b/src/lib/instance_name.c @@ -0,0 +1,274 @@ +/* + * RINA naming related utilities + * + * Sander Vrijders <sander.vrijders@intec.ugent.be> + * Francesco Salvestrini <f.salvestrini@nextworks.it> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#define OUROBOROS_PREFIX "instance-name" + +#include <ouroboros/logs.h> +#include <ouroboros/common.h> +#include <ouroboros/instance_name.h> +#include <ouroboros/utils.h> + +#include <string.h> +#include <math.h> +#include <malloc.h> +#include <stdlib.h> + +#define instance_name_is_equal(a, b) (instance_name_cmp(a, b) == 0) + +static char * strdup(const char * src) +{ + int len = 0; + char * dst = NULL; + + if (src == NULL) + return NULL; + + len = strlen(src) + 1; + + dst = malloc(len); + if (dst == NULL) + return NULL; + + memcpy(dst, src, len); + + return dst; +} + +instance_name_t * instance_name_create() +{ + instance_name_t * tmp; + + tmp = malloc(sizeof *tmp); + + tmp->name = NULL; + tmp->id = 0; + + return tmp; +} + +instance_name_t * instance_name_init_from(instance_name_t * dst, + const char * name, + uint16_t id) +{ + if (dst == NULL) + return NULL; + + /* Clean up the destination, leftovers might be there ... */ + instance_name_fini(dst); + + dst->name = strdup(name); + dst->id = id; + + if (dst->name == NULL) { + instance_name_fini(dst); + return NULL; + } + + return dst; +} + +instance_name_t * instance_name_init_with(instance_name_t * dst, + char * name, + uint16_t id) +{ + if (dst == NULL) + return NULL; + + /* Clean up the destination, leftovers might be there ... */ + instance_name_fini(dst); + + dst->name = name; + dst->id = id; + + return dst; +} + +void instance_name_fini(instance_name_t * n) +{ + if (n == NULL) + return; + + if (n->name != NULL) { + free(n->name); + n->name = NULL; + } +} + +void instance_name_destroy(instance_name_t * ptr) +{ + if (ptr == NULL) + return; + + instance_name_fini(ptr); + + free(ptr); +} + +int instance_name_cpy(const instance_name_t * src, + instance_name_t * dst) +{ + instance_name_t * res; + + if (src == NULL || dst == NULL) + return -1; + + res = instance_name_init_from(dst, + src->name, + src->id); + if (res == NULL) + return -1; + + return 0; +} + +instance_name_t * instance_name_dup(const instance_name_t * src) +{ + instance_name_t * tmp; + + if (src == NULL) + return NULL; + + tmp = instance_name_create(); + if (tmp == NULL) + return NULL; + + if (instance_name_cpy(src, tmp)) { + instance_name_destroy(tmp); + return NULL; + } + + return tmp; +} + +bool instance_name_is_valid(const instance_name_t * n) +{ + return (n != NULL && + n->name != NULL && + strlen(n->name)); +} + +int instance_name_cmp(const instance_name_t * a, + const instance_name_t * b) +{ + + int ret = 0; + + if (a == NULL || b == NULL) { + LOG_DBGF("Won't compare NULL."); + return -2; + } + + if (a == b) + return 0; + + ret = strcmp(a->name, b->name); + + if (!ret) { + if (a->id == b-> id) + return 0; + else + return a->id < b->id ? -1 : 1; + } + + return ret; +} + + + +#define DELIMITER "/" + +char * instance_name_to_string(const instance_name_t * n) +{ + char * tmp; + size_t size; + const char * none = ""; + size_t none_len = strlen(none); + + if (n == NULL) + return NULL; + + size = 0; + + size += (n->name != NULL ? + strlen(n->name) : none_len); + size += strlen(DELIMITER); + + size += (n->id == 0 ? + 1 : n_digits(n->id)); + size += strlen(DELIMITER); + + tmp = malloc(size); + if (!tmp) + return NULL; + + if (sprintf(tmp, "%s%s%d", + (n->name != NULL ? n->name : none), + DELIMITER, n->id) + != size - 1) { + free(tmp); + return NULL; + } + + return tmp; +} + +instance_name_t * string_to_instance_name(const char * s) +{ + instance_name_t * name; + + char * tmp1 = NULL; + char * tmp_ap = NULL; + char * tmp_s_api = NULL; + unsigned int tmp_api = 0; + char * tmp2; + + if (s == NULL) + return NULL; + + tmp1 = strdup(s); + if (tmp1 == NULL) { + return NULL; + } + + tmp_ap = strtok(tmp1, DELIMITER); + tmp_s_api = strtok(NULL, DELIMITER); + if (tmp_s_api != NULL) + tmp_api = (unsigned int) strtol(tmp_s_api, &tmp2, 10); + + name = instance_name_create(); + if (name == NULL) { + if (tmp1 != NULL) + free(tmp1); + return NULL; + } + + if (!instance_name_init_from(name, tmp_ap, tmp_api)) { + instance_name_destroy(name); + if (tmp1 != NULL) + free(tmp1); + return NULL; + } + + if (tmp1 != NULL) + free(tmp1); + + return name; +} |