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Diffstat (limited to 'src/names.c')
| -rw-r--r-- | src/names.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/src/names.c b/src/names.c new file mode 100644 index 0000000..f9a7817 --- /dev/null +++ b/src/names.c @@ -0,0 +1,52 @@ +/* + * Copyright (C) 2018 "IoT.bzh" + * Author José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/******************************************************************************/ +/******************************************************************************/ +/* IMPLEMENTATION OF NAMES */ +/******************************************************************************/ +/******************************************************************************/ + +#include <ctype.h> +#include <string.h> +#include <stdint.h> + +#include "names.h" + +/** + * Check the name and compute its length. Returns 0 in case of invalid name + * @param name the name to check + * @return the length of the name or zero if invalid + */ +size_t +agent_check_name( + const char *name +) { + char c; + size_t length = 0; + if (name) { + while ((c = name[length])) { + if (length > UINT8_MAX + || (!isalnum(c) && !strchr("@_-$", c))) { + length = 0; + break; + } + length++; + } + } + return length; +} + |