Struct ServerConnectionString 

pub struct ServerConnectionString(/* private fields */);

Validated MCP server connection string.

Ensures server identifiers are non-empty and contain only valid characters. This prevents command injection and path traversal attacks.

Security

• Rejects empty strings
• Rejects strings with null bytes
• Trims whitespace

Examples

use mcp_execution_core::cli::ServerConnectionString;

let conn = ServerConnectionString::new("github").unwrap();
assert_eq!(conn.as_str(), "github");

// Empty strings are rejected
assert!(ServerConnectionString::new("").is_err());

// Whitespace is trimmed
let conn = ServerConnectionString::new("  server  ").unwrap();
assert_eq!(conn.as_str(), "server");

Implementations

impl ServerConnectionString

pub fn new(s: impl Into<String>) -> Result<Self>

Creates a new validated server connection string.

Security

This function validates input to prevent command injection attacks:

• Only allows alphanumeric characters and -_./: for safe server identifiers
• Rejects shell metacharacters (&, |, ;, $, `, etc.)
• Rejects control characters to prevent CRLF injection
• Length limited to 256 characters

Errors

Returns an error if:

• The string is empty after trimming
• The string contains invalid characters
• The string contains control characters
• The string exceeds 256 characters

Examples

use mcp_execution_core::cli::ServerConnectionString;

let conn = ServerConnectionString::new("my-server")?;
assert_eq!(conn.as_str(), "my-server");

// Shell metacharacters are rejected for security
assert!(ServerConnectionString::new("server && rm -rf /").is_err());

pub fn as_str(&self) -> &str

Returns the connection string as a string slice.

Examples

use mcp_execution_core::cli::ServerConnectionString;

let conn = ServerConnectionString::new("server")?;
assert_eq!(conn.as_str(), "server");

Trait Implementations

impl Clone for ServerConnectionString

fn clone(&self) -> ServerConnectionString

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ServerConnectionString

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ServerConnectionString

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromStr for ServerConnectionString

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for ServerConnectionString

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ServerConnectionString

fn eq(&self, other: &ServerConnectionString) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ServerConnectionString

impl StructuralPartialEq for ServerConnectionString