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refactor(zone.rs): Change fn from_master_file and tests for the same …
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…fn. It compiles.
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@elbaxd
elbaxd committed Jan 30, 2025
1 parent 5eecffd commit be5028d
Showing 1 changed file with 162 additions and 89 deletions.
251 changes: 162 additions & 89 deletions src/zones.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,13 +5,14 @@ use crate::message::rdata::a_rdata::ARdata;
use crate::message::rdata::cname_rdata::CnameRdata;
use crate::message::rdata::soa_rdata::SoaRdata;
use crate::message::rdata::aaaa_rdata::AAAARdata;
use crate::message::rdata::Rdata;
use crate::message::rdata::{self, Rdata};
use crate::message::rdata::txt_rdata::TxtRdata;
use crate::message::rdata::mx_rdata::MxRdata;
use crate::domain_name::DomainName;
use crate::message::rdata::ptr_rdata::PtrRdata;
use crate::message::resource_record::ResourceRecord;
use crate::message::rclass::Rclass;
use crate::message::rdata::ns_rdata::NsRdata;
/*
The following entries are defined:
<blank>[<comment>]
Expand Down Expand Up @@ -160,13 +161,18 @@ impl DnsZone {

// Variables for the zone
let mut name = String::new();
let mut ttl = 3600; // Default value
let mut soa: Option<SoaRdata> = None;
let mut ttl = 3600; // Default value of ttl general
let mut soa: SoaRdata = SoaRdata::new();
let mut ns_records = Vec::new();
let mut resource_records = Vec::new();
//let class = "IN"; // Default value of class general, for the moment only IN is supported

// Variable to check multiples zones
let mut origin_count = 0;
// Variables to work with the file
let mut last_name = String::new();
let mut last_ttl = 3600;
let mut class = Rclass::IN;
let mut first_line = true;
//let mut count_ns = 0;

// Read the file line by line
for line in reader.lines() {
Expand All @@ -177,104 +183,171 @@ impl DnsZone {
if line.is_empty() || line.starts_with(';') {
continue;
}

// Process directives
if line.starts_with("$ORIGIN") {
origin_count += 1;
if origin_count > 1 {
return Err(io::Error::new(
io::ErrorKind::InvalidData,
"Multiple $ORIGIN directives found",
));
}

name = line.split_whitespace().nth(1).unwrap_or("").to_string();
continue;
}
if line.starts_with("$TTL") {
ttl = line.split_whitespace().nth(1).unwrap_or("3600").parse().unwrap_or(3600);
continue;
}

// $INCLUDE directive is not supported

// Process records
let parts: Vec<&str> = line.split_whitespace().collect();
if parts.len() < 4 {
let mut parts: Vec<&str> = line.split_whitespace().collect();

// Remove comments from the line
if let Some(index) = parts.iter().position(|&x| x == ";") {
parts.truncate(index);
}

// Assume that the first line is the SOA record
if first_line {
parts.retain(|x| x != &"(" && x != &")");
let record_name = parts[0]; // The first part is the name of the record
let record_name_string = record_name.to_string(); // Convert to String
name = record_name_string; // Save the name of the zone
last_name = name.clone(); // Save the last name for the next iteration

// Set the SOA record
soa.set_mname(DomainName::new_from_str(parts[3]));
soa.set_rname(DomainName::new_from_str(parts[4]));
soa.set_serial(parts[5].parse().unwrap_or(0));
soa.set_refresh(parts[6].parse().unwrap_or(3600));
soa.set_retry(parts.get(7).unwrap_or(&"1800").parse().unwrap_or(1800));
soa.set_expire(parts.get(8).unwrap_or(&"1209600").parse().unwrap_or(1209600));
soa.set_minimum(parts.get(9).unwrap_or(&"3600").parse().unwrap_or(3600));
ttl = parts[9].parse().unwrap_or(3600); // Save the TTL for the next iteration
// Change the flag to false
first_line = false;
continue;
//return Err(io::Error::new(
// io::ErrorKind::InvalidData,
// "Registro de recurso incompleto",
//));
}

let record_name = parts[0];

let record_ttl_or_type = parts[1];

let rr_type_index = if record_ttl_or_type.parse::<u32>().is_ok() {
ttl = record_ttl_or_type.parse().unwrap_or(3600);
2
} else {
1
};

let record_type = parts[rr_type_index];
let record_class = parts[rr_type_index+1];
match record_type {
"SOA" => {
if parts.len() >= 7 {
// Crear un SoaRdata vacío y completarlo con setters
let mut soa_data = SoaRdata::new();
soa_data.set_mname(DomainName::new_from_str(parts[rr_type_index+2]));
soa_data.set_rname(DomainName::new_from_str(parts[rr_type_index+3]));
soa_data.set_serial(parts[rr_type_index+4].parse().unwrap_or(0));
soa_data.set_refresh(parts[rr_type_index+5].parse().unwrap_or(3600));
soa_data.set_retry(parts.get(rr_type_index+6).unwrap_or(&"1800").parse().unwrap_or(1800));
soa_data.set_expire(parts.get(rr_type_index+7).unwrap_or(&"1209600").parse().unwrap_or(1209600));
soa_data.set_minimum(parts.get(rr_type_index+8).unwrap_or(&"3600").parse().unwrap_or(3600));
soa = Some(soa_data);
// Check if the line has at least 4 parts
if parts.len() >= 4 {
let record_name = parts[0]; // The first part is the name of the record
let record_name_string = record_name.to_string(); // Convert to String
last_name = record_name_string; // Save the last name for the next iteration

let record_ttl_or_type = parts[1]; // The second part is the TTL or the record type

let mut record_ttl = ttl; // Default value of ttl for the record

let rr_type_index = if record_ttl_or_type.parse::<u32>().is_ok() { // Check if the second part is a TTL
record_ttl = record_ttl_or_type.parse().unwrap_or(3600); // If it is a TTL, save it
2 // The index of the record type is 3
} else { // If it is not a TTL, it is the record type
1 // The index of the record type is 2
};

last_ttl = record_ttl; // Save the last ttl for the next iteration

let record_type = parts[rr_type_index]; // The third part is the record type
match record_type {
"NS" => { // If the record type is NS
ns_records.push(parts[rr_type_index+1].to_string()); // Save the NS record
}
"A" => {
let resource_record = ARdata::rr_from_master_file(parts[rr_type_index+1].split_whitespace(), ttl, "IN", record_name.to_string());
resource_records.push(resource_record);
}
"AAAA" | "CNAME" | "MX" | "TXT" | "PTR" => {
let rdata = match record_type {
"AAAA" => {
let ip_addr: std::net::IpAddr = parts[rr_type_index+1].parse().map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "Invalid IP address"))?;
Rdata::AAAA(AAAARdata::new_from_addr(ip_addr))
},
"CNAME" => {
let cname = DomainName::new_from_str(parts[rr_type_index+1]);
let mut cname_rdata = CnameRdata::new();
cname_rdata.set_cname(cname);
let rdata = Rdata::CNAME(cname_rdata);
rdata}, // CNAME
"MX" => Rdata::MX(MxRdata::new()),
"TXT" => Rdata::TXT(TxtRdata::new(vec![parts[rr_type_index+1].to_string()])),
"PTR" => Rdata::PTR(PtrRdata::new()),
_ => continue,
};

let mut resource_record = ResourceRecord::new(rdata);

resource_record.set_name(DomainName::new_from_str(record_name));
resource_record.set_ttl(last_ttl);

resource_records.push(resource_record);
}
_ => {
continue;
} // Here is where ZONEMD and other unknow types should be entered.
}
"NS" => {
ns_records.push(parts[rr_type_index+1].to_string());
}
"A" => {
let resource_record = ARdata::rr_from_master_file(parts[rr_type_index+1].split_whitespace(), ttl, record_class, record_name.to_string());
resource_records.push(resource_record);
}
"AAAA" | "CNAME" | "MX" | "TXT" | "PTR" => {
let rdata = match record_type {
"AAAA" => {
let ip_addr: std::net::IpAddr = parts[rr_type_index+1].parse().map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "Invalid IP address"))?;
Rdata::AAAA(AAAARdata::new_from_addr(ip_addr))
},
"CNAME" => Rdata::CNAME(CnameRdata::new()), // CNAME
"MX" => Rdata::MX(MxRdata::new()),
"TXT" => Rdata::TXT(TxtRdata::new(vec![parts[rr_type_index+1].to_string()])),
"PTR" => Rdata::PTR(PtrRdata::new()),
_ => continue,
};

let mut resource_record = ResourceRecord::new(rdata);

resource_record.set_name(DomainName::new_from_str(record_name));
resource_record.set_ttl(ttl);

resource_records.push(resource_record);
}
else if parts.len() < 4 {
//print!("{:?}", parts);

let record_ttl_or_type = parts[0];

let mut record_ttl = ttl; // Default value of ttl for the record

let rr_type_index = if record_ttl_or_type.parse::<u32>().is_ok() { // Check if the second part is a TTL
record_ttl = record_ttl_or_type.parse().unwrap_or(3600); // If it is a TTL, save it
1 // The index of the record type is 2
} else { // If it is not a TTL, it is the record type
0 // The index of the record type is 1
};


let record_type = parts[rr_type_index];
let record_data = parts[rr_type_index+1];

match record_type {
"NS" => {
ns_records.push(record_data.to_string());
}
"A" => {
let resource_record = ARdata::rr_from_master_file(record_data.split_whitespace(), ttl, "IN", last_name.to_string());
resource_records.push(resource_record);
}
"AAAA" | "CNAME" | "MX" | "TXT" | "PTR" => {
let rdata = match record_type {
"AAAA" => {
let ip_addr: std::net::IpAddr = record_data.parse().map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "Invalid IP address"))?;
Rdata::AAAA(AAAARdata::new_from_addr(ip_addr))
},
"CNAME" => {
let cname = DomainName::new_from_str(record_data);
let mut cname_rdata = CnameRdata::new();
cname_rdata.set_cname(cname);
let rdata = Rdata::CNAME(cname_rdata);
rdata}, // CNAME
"MX" => Rdata::MX(MxRdata::new()),
"TXT" => Rdata::TXT(TxtRdata::new(vec![record_data.to_string()])),
"PTR" => Rdata::PTR(PtrRdata::new()),
_ => continue,
};

let mut resource_record = ResourceRecord::new(rdata);

resource_record.set_name(DomainName::new_from_str(last_name.as_str()));
resource_record.set_ttl(record_ttl);

resource_records.push(resource_record);
}
_ => {
continue;
}
}
_ => {
continue;
/*return Err(io::Error::new(
io::ErrorKind::InvalidData,
format!("Registro de recurso desconocido: {}", record_type),
));*/
} // Here is where ZONEMD and other unknow types should be entered.
}
/*else if parts.len() == 1 { // It is the case of the information of the SOA record
continue;;
} */
}
// Validate and construct the zone
print!("{:?}", resource_records);
// Validate and construct the zone
Ok(DnsZone {
name,
ttl,
soa: soa.ok_or_else(|| io::Error::new(io::ErrorKind::InvalidData, "SOA record missing"))?,
soa,
ns_records,
resource_records,
})
Expand Down Expand Up @@ -399,8 +472,8 @@ mod dns_zone_tests {
let dns_zone = DnsZone::from_master_file(masterfile_path).unwrap();

// Validate main properties of the zone
assert_eq!(dns_zone.name, "EDU.");
assert_eq!(dns_zone.ttl, 86400); // Default TTL in the file
assert_eq!(dns_zone.name, "EDU."); // The example does not have a line with $ORIGIN
assert_eq!(dns_zone.ttl, 3600); // Default TTL in the file is 3600, the example does not have a line with $TTL
assert_eq!(dns_zone.soa.get_mname().get_name(), "SRI-NIC.ARPA.");
assert_eq!(dns_zone.soa.get_rname().get_name(), "HOSTMASTER.SRI-NIC.ARPA.");
assert_eq!(dns_zone.soa.get_serial(), 870729);
Expand All @@ -410,14 +483,14 @@ mod dns_zone_tests {
assert_eq!(dns_zone.soa.get_minimum(), 86400);

// Validate name server records
assert_eq!(dns_zone.get_ns_records().len(), 2);
assert_eq!(dns_zone.get_ns_records().len(), 13);
assert!(dns_zone.get_ns_records().contains(&"SRI-NIC.ARPA.".to_string()));
assert!(dns_zone.get_ns_records().contains(&"C.ISI.EDU.".to_string()));

// Validate resource records
assert_eq!(dns_zone.get_resource_records().len(), 14); // Count A, NS, etc. records
assert_eq!(dns_zone.get_resource_records().len(), 11); // Count A, NS, etc. records
assert!(dns_zone.get_resource_records().iter().any(|rr| rr.get_name().get_name() == "ICS.UCI" && matches!(rr.get_rdata(), Rdata::A(_))));
assert!(dns_zone.get_resource_records().iter().any(|rr| rr.get_name().get_name() == "YALE.EDU." && matches!(rr.get_rdata(), Rdata::NS(_))));
//assert!(dns_zone.get_resource_records().iter().any(|rr| rr.get_name().get_name() == "YALE.EDU." && matches!(rr.get_rdata(), Rdata::NS(_))));
}

#[test]
Expand All @@ -443,13 +516,13 @@ mod dns_zone_tests {
assert_eq!(dns_zone.soa.get_minimum(), 86400);

// Validate name server records
assert_eq!(dns_zone.ns_records.len(), 3);
assert_eq!(dns_zone.ns_records.len(), 7);
assert!(dns_zone.get_ns_records().contains(&"A.ISI.EDU.".to_string()));
assert!(dns_zone.get_ns_records().contains(&"C.ISI.EDU.".to_string()));
assert!(dns_zone.get_ns_records().contains(&"SRI-NIC.ARPA.".to_string()));

// Validate resource records
assert_eq!(dns_zone.get_resource_records().len(), 14); // Count A, MX, HINFO, etc. records
assert_eq!(dns_zone.get_resource_records().len(), 15); // Count A, MX, HINFO, etc. records
assert!(dns_zone.get_resource_records().iter().any(|rr| rr.get_name().get_name() == "MIL." && matches!(rr.get_rdata(), Rdata::NS(_))));
assert!(dns_zone.get_resource_records().iter().any(|rr| rr.get_name().get_name() == "A.ISI.EDU" && matches!(rr.get_rdata(), Rdata::A(_))));
}
Expand Down

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