diff options
Diffstat (limited to 'src/gsupclient/gsup_peer_id.c')
| -rw-r--r-- | src/gsupclient/gsup_peer_id.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/gsupclient/gsup_peer_id.c b/src/gsupclient/gsup_peer_id.c new file mode 100644 index 0000000..7b3efd5 --- /dev/null +++ b/src/gsupclient/gsup_peer_id.c @@ -0,0 +1,187 @@ +/* Copyright 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> + * + * All Rights Reserved + * + * 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, see <http://www.gnu.org/licenses/>. + */ + +#include <errno.h> +#include <string.h> +#include <osmocom/core/utils.h> +#include <osmocom/gsupclient/gsup_peer_id.h> + +bool osmo_ipa_name_is_empty(struct osmo_ipa_name *ipa_name) +{ + return (!ipa_name) || (!ipa_name->len); +} + +int osmo_ipa_name_set(struct osmo_ipa_name *ipa_name, const uint8_t *val, size_t len) +{ + if (!val || !len) { + *ipa_name = (struct osmo_ipa_name){}; + return 0; + } + if (len > sizeof(ipa_name->val)) + return -ENOSPC; + ipa_name->len = len; + memcpy(ipa_name->val, val, len); + return 0; +} + +static int osmo_ipa_name_set_str_va(struct osmo_ipa_name *ipa_name, const char *str_fmt, va_list ap) +{ + if (!str_fmt) + return osmo_ipa_name_set(ipa_name, NULL, 0); + vsnprintf((char*)(ipa_name->val), sizeof(ipa_name->val), str_fmt, ap); + ipa_name->len = strlen((char*)(ipa_name->val))+1; + return 0; +} + +int osmo_ipa_name_set_str(struct osmo_ipa_name *ipa_name, const char *str_fmt, ...) +{ + va_list ap; + int rc; + va_start(ap, str_fmt); + rc = osmo_ipa_name_set_str_va(ipa_name, str_fmt, ap); + va_end(ap); + return rc; +} + +int osmo_ipa_name_cmp(const struct osmo_ipa_name *a, const struct osmo_ipa_name *b) +{ + int cmp; + if (a == b) + return 0; + if (!a) + return -1; + if (!b) + return 1; + if (!a->len && !b->len) + return 0; + if (!a->len && b->len) + return -1; + if (!b->len && a->len) + return 1; + + if (a->len == b->len) + return memcmp(a->val, b->val, a->len); + else if (a->len < b->len) { + cmp = memcmp(a->val, b->val, a->len); + if (!cmp) + cmp = -1; + return cmp; + } else { + /* a->len > b->len */ + cmp = memcmp(a->val, b->val, b->len); + if (!cmp) + cmp = 1; + return cmp; + } +} + +/* Call osmo_ipa_name_to_str_c with OTC_SELECT. */ +const char *osmo_ipa_name_to_str(const struct osmo_ipa_name *ipa_name) +{ + return osmo_ipa_name_to_str_c(OTC_SELECT, ipa_name); +} + +/* Return an unquoted string, not including the terminating zero. Used for writing VTY config. */ +const char *osmo_ipa_name_to_str_c(void *ctx, const struct osmo_ipa_name *ipa_name) +{ + size_t len = ipa_name->len; + if (!len) + return talloc_strdup(ctx, ""); + if (ipa_name->val[len-1] == '\0') + len--; + return osmo_escape_str_c(ctx, (char*)ipa_name->val, len); +} + +bool osmo_gsup_peer_id_is_empty(struct osmo_gsup_peer_id *gsup_peer_id) +{ + if (!gsup_peer_id) + return true; + switch (gsup_peer_id->type) { + case OSMO_GSUP_PEER_ID_EMPTY: + return true; + case OSMO_GSUP_PEER_ID_IPA_NAME: + return osmo_ipa_name_is_empty(&gsup_peer_id->ipa_name); + default: + return false; + } +} +int osmo_gsup_peer_id_set(struct osmo_gsup_peer_id *gsup_peer_id, enum osmo_gsup_peer_id_type type, + const uint8_t *val, size_t len) +{ + gsup_peer_id->type = type; + switch (type) { + case OSMO_GSUP_PEER_ID_IPA_NAME: + return osmo_ipa_name_set(&gsup_peer_id->ipa_name, val, len); + default: + return -EINVAL; + } +} + +int osmo_gsup_peer_id_set_str(struct osmo_gsup_peer_id *gsup_peer_id, enum osmo_gsup_peer_id_type type, + const char *str_fmt, ...) +{ + va_list ap; + int rc; + + *gsup_peer_id = (struct osmo_gsup_peer_id){}; + + switch (type) { + case OSMO_GSUP_PEER_ID_IPA_NAME: + gsup_peer_id->type = OSMO_GSUP_PEER_ID_IPA_NAME; + va_start(ap, str_fmt); + rc = osmo_ipa_name_set_str_va(&gsup_peer_id->ipa_name, str_fmt, ap); + va_end(ap); + return rc; + default: + return -EINVAL; + } +} + +int osmo_gsup_peer_id_cmp(const struct osmo_gsup_peer_id *a, const struct osmo_gsup_peer_id *b) +{ + if (a->type != b->type) + return OSMO_CMP(a->type, b->type); + switch (a->type) { + case OSMO_GSUP_PEER_ID_IPA_NAME: + return osmo_ipa_name_cmp(&a->ipa_name, &b->ipa_name); + default: + return -EINVAL; + } +} + +const struct value_string osmo_gsup_peer_id_type_names[] = { + { OSMO_GSUP_PEER_ID_IPA_NAME, "IPA-name" }, + {} +}; + +/* Call osmo_gsup_peer_id_to_str_c with OTC_SELECT */ +const char *osmo_gsup_peer_id_to_str(const struct osmo_gsup_peer_id *gpi) +{ + return osmo_gsup_peer_id_to_str_c(OTC_SELECT, gpi); +} + +/* Return an unquoted string, not including the terminating zero. Used for writing VTY config. */ +const char *osmo_gsup_peer_id_to_str_c(void *ctx, const struct osmo_gsup_peer_id *gpi) +{ + switch (gpi->type) { + case OSMO_GSUP_PEER_ID_IPA_NAME: + return osmo_ipa_name_to_str_c(ctx, &gpi->ipa_name); + default: + return talloc_strdup(ctx, osmo_gsup_peer_id_type_name(gpi->type)); + } +} |