83 lines
2.3 KiB
Rust
83 lines
2.3 KiB
Rust
use std::net::Ipv4Addr;
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pub fn ips_parse(ips: &Vec<String>) -> Result<Vec<(u32, u32, Ipv4Addr)>, String> {
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let mut in_ips_c = vec![];
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for x in ips {
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let mut split = x.split(",");
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let net = if let Some(net) = split.next() {
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net
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} else {
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return Err("ipv4/mask,ipv4".to_string());
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};
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let ip = if let Some(ip) = split.next() {
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ip
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} else {
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return Err("ipv4/mask,ipv4".to_string());
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};
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let ip = if let Ok(ip) = ip.parse::<Ipv4Addr>() {
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ip
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} else {
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return Err("not ipv4".to_string());
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};
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let mut split = net.split("/");
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let dest = if let Some(dest) = split.next() {
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dest
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} else {
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return Err("no ipv4/mask".to_string());
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};
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let mask = if let Some(mask) = split.next() {
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mask
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} else {
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return Err("no netmask".to_string());
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};
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let dest = if let Ok(dest) = dest.parse::<Ipv4Addr>() {
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dest
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} else {
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return Err("not ipv4".to_string());
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};
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let mask = to_ip(mask)?;
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in_ips_c.push((u32::from_be_bytes(dest.octets()), mask, ip));
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}
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Ok(in_ips_c)
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}
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pub fn out_ips_parse(ips: &Vec<String>) -> Result<Vec<(u32, u32)>, String> {
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let mut in_ips_c = vec![];
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for x in ips {
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let mut split = x.split("/");
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let dest = if let Some(dest) = split.next() {
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dest
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} else {
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return Err("no ipv4/mask".to_string());
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};
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let mask = if let Some(mask) = split.next() {
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mask
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} else {
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return Err("no netmask".to_string());
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};
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let dest = if let Ok(dest) = dest.parse::<Ipv4Addr>() {
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dest
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} else {
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return Err("not ipv4".to_string());
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};
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let mask = to_ip(mask)?;
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in_ips_c.push((u32::from_be_bytes(dest.octets()), mask));
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}
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Ok(in_ips_c)
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}
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pub fn to_ip(mask: &str) -> Result<u32, String> {
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if let Ok(m) = mask.parse::<u32>() {
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if m >= 32 {
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return Err("not netmask".to_string());
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}
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let mut mask = 0 as u32;
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for i in 0..m {
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mask = mask | (1 << (31 - i));
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}
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Ok(mask)
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} else {
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Err("not netmask".to_string())
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}
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}
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