229 lines
4.8 KiB
Bash
229 lines
4.8 KiB
Bash
#!/bin/bash
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# Ver: 1.0 by Endial Fang (endial@126.com)
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#
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# 数据有效性校验函数库
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# 加载依赖项
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. /usr/local/scripts/liblog.sh # 日志输出函数库
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# 函数列表
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# 检测数据是否为整数
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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is_int() {
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local -r int="${1:?missing value}"
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if [[ "$int" =~ ^-?[0-9]+ ]]; then
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true
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else
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false
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fi
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}
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# 检测数据是否为正整数
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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is_positive_int() {
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local -r int="${1:?missing value}"
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if is_int "$int" && (( "${int}" >= 0 )); then
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true
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else
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false
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fi
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}
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# 检测数据是否为布尔值 '1' 或字符串 'yes/true'
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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is_boolean_yes() {
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local -r bool="${1:-}"
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# comparison is performed without regard to the case of alphabetic characters
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shopt -s nocasematch
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if [[ "$bool" = 1 || "$bool" =~ ^(yes|true)$ ]]; then
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true
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else
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false
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fi
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}
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# 检测数据是否为字符串 'yes/no'
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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is_yes_no_value() {
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local -r bool="${1:-}"
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if [[ "$bool" =~ ^(yes|no)$ ]]; then
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true
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else
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false
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fi
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}
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# 检测数据是否为字符串 'true/false'
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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is_true_false_value() {
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local -r bool="${1:-}"
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if [[ "$bool" =~ ^(true|false)$ ]]; then
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true
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else
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false
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fi
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}
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# 检测提供的参数是否为空字符串或未定义
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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is_empty_value() {
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local -r val="${1:-}"
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if [[ -z "$val" ]]; then
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true
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else
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false
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fi
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}
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# 检测数据是否为有效的端口号
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值 或 错误消息
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validate_port() {
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local value
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local unprivileged=0
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# Parse flags
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while [[ "$#" -gt 0 ]]; do
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case "$1" in
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-unprivileged)
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unprivileged=1
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;;
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--)
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shift
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break
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;;
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-*)
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stderr_print "unrecognized flag $1"
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return 1
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;;
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*)
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break
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;;
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esac
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shift
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done
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if [[ "$#" -gt 1 ]]; then
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echo "too many arguments provided"
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return 2
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elif [[ "$#" -eq 0 ]]; then
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stderr_print "missing port argument"
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return 1
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else
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value=$1
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fi
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if [[ -z "$value" ]]; then
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echo "the value is empty"
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return 1
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else
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if ! is_int "$value"; then
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echo "value is not an integer"
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return 2
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elif [[ "$value" -lt 0 ]]; then
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echo "negative value provided"
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return 2
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elif [[ "$value" -gt 65535 ]]; then
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echo "requested port is greater than 65535"
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return 2
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elif [[ "$unprivileged" = 1 && "$value" -lt 1024 ]]; then
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echo "privileged port requested"
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return 3
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fi
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fi
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}
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# 检测数据是否为有效的IPv4地址
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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validate_ipv4() {
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local ip="${1:?ip is missing}"
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local stat=1
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if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
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read -r -a ip_array <<< "$(tr '.' ' ' <<< "$ip")"
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[[ ${ip_array[0]} -le 255 && ${ip_array[1]} -le 255 \
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&& ${ip_array[2]} -le 255 && ${ip_array[3]} -le 255 ]]
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stat=$?
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fi
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return $stat
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}
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# 校验字符串格式
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# 参数:
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# $1 - 待检测的数据
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# 返回值:
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# 布尔值
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validate_string() {
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local string
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local min_length=-1
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local max_length=-1
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# Parse flags
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while [ "$#" -gt 0 ]; do
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case "$1" in
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-min-length)
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shift
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min_length=${1:-}
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;;
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-max-length)
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shift
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max_length=${1:-}
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;;
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--)
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shift
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break
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;;
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-*)
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stderr_print "unrecognized flag $1"
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return 1
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;;
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*)
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break
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;;
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esac
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shift
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done
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if [ "$#" -gt 1 ]; then
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stderr_print "too many arguments provided"
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return 2
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elif [ "$#" -eq 0 ]; then
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stderr_print "missing string"
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return 1
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else
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string=$1
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fi
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if [[ "$min_length" -ge 0 ]] && [[ "${#string}" -lt "$min_length" ]]; then
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echo "string length is less than $min_length"
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return 1
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fi
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if [[ "$max_length" -ge 0 ]] && [[ "${#string}" -gt "$max_length" ]]; then
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echo "string length is great than $max_length"
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return 1
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fi
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} |