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#[derive(Debug)]
pub struct HideConfig<'a> {
pub payload_path: &'a str,
pub carrier_path: &'a str,
pub output_path: Option<&'a str>,
pub strategy: Option<&'a str>,
}
#[derive(Debug)]
pub struct RevealConfig<'a> {
pub carrier_path: &'a str,
pub output_path: Option<&'a str>,
pub strategy: Option<&'a str>,
}
mod images;
mod text;
mod videos;
fn hide_default(payload: &str, carrier: &str, _o:&str) {
panic!("No strategy can be used to hide {} in {}!", payload, carrier);
}
pub fn run_hide(config: HideConfig) {
let mut hide: fn(&str, &str, &str) = hide_default;
let mut output_file_name_if_note_specified = "./steg_package.txt";
if config.payload_path.ends_with(".png") && config.carrier_path.ends_with(".png") {
println!("Hide using - Least Significant Bit PNG Steganography (lsb_png_steganography)");
hide = images::lsb_png_steganography::hide;
output_file_name_if_note_specified = "./steg_package.png";
} else if config.payload_path.ends_with(".txt") && config.carrier_path.ends_with(".txt") {
println!("Hide using - whitespace text steganography (whitespace_text_steganography)");
hide = text::whitespace_text_steganography::hide;
output_file_name_if_note_specified = "./steg_package.txt";
} else if config.payload_path.ends_with(".txt") && config.carrier_path.ends_with(".png") {
println!("Hide using - Least Significant Bit Text into PNG Steganography (lsb_text_png_steganography)");
hide = text::lsb_text_png_steganography::hide;
output_file_name_if_note_specified = "./steg_package.png";
}
if let Some(output_path) = config.output_path {
hide(config.payload_path, config.carrier_path, output_path);
} else {
hide(config.payload_path, config.carrier_path, output_file_name_if_note_specified);
}
}
fn reveal_default(carrier: &str, _o:&str) {
panic!("No strategy was specified for getting a payload from {}!", carrier);
}
pub fn run_reveal(config: RevealConfig) {
let mut reveal: fn(&str, &str) = reveal_default;
let mut output_file_name_if_note_specified = "./hidden_message.txt";
if config.carrier_path.ends_with(".png") {
if let Some(strategy) = config.strategy {
if strategy == "lsb_png_steganography" {
reveal = images::lsb_png_steganography::reveal;
output_file_name_if_note_specified = "./hidden_message.png";
} else if strategy == "lsb_text_png_steganography" {
reveal = text::lsb_text_png_steganography::reveal;
output_file_name_if_note_specified = "./hidden_message.txt";
} else {
panic!("The strategy {} can't be used for .png files", strategy);
}
} else {
panic!(".png files need a strategy specified to get messages out (e.g. -s lsb_text_png_steganography)");
}
} else if config.carrier_path.ends_with(".txt") {
reveal = text::whitespace_text_steganography::reveal;
output_file_name_if_note_specified = "./hidden_message.txt";
}
if let Some(output_path) = config.output_path {
reveal(config.carrier_path, output_path);
} else {
reveal(config.carrier_path, output_file_name_if_note_specified);
}
}
#[cfg(test)]
mod tests {
use super::{HideConfig, RevealConfig};
#[test]
fn lsb_png_steganography_hide_does_not_panic() {
let config = HideConfig {
strategy: None,
payload_path: "./images/payload.png",
carrier_path: "./images/carrier.png",
output_path: Some("images/output/lsb_png_steganography_hide_does_not_panic.png"),
};
super::run_hide(config);
}
#[test]
fn lsb_png_steganography_reveal_does_not_panic() {
let config = RevealConfig {
strategy: Some("lsb_png_steganography"),
carrier_path: "./images/contains_hidden_image.png",
output_path: Some(
"./images/output/whitespace_text_steganography_reveal_does_not_panic.png",
),
};
super::run_reveal(config);
}
#[test]
fn whitespace_text_steganography_hide_does_not_panic() {
let config = HideConfig {
strategy: None,
payload_path: "./texts/payload_haiku.txt",
carrier_path: "./texts/carrier_sonnet.txt",
output_path: Some(
"./texts/output/whitespace_text_steganography_hide_does_not_panic.txt",
),
};
super::run_hide(config);
}
#[test]
fn whitespace_text_steganography_reveal_does_not_panic() {
let config = RevealConfig {
strategy: None,
carrier_path: "./texts/hidden.txt",
output_path: Some(
"./texts/output/whitespace_text_steganography_reveal_does_not_panic.txt",
),
};
super::run_reveal(config);
}
#[test]
fn lsb_text_png_steganography_hide_does_not_panic() {
let config = HideConfig {
strategy: None,
payload_path: "./texts/payload_haiku.txt",
carrier_path: "./images/carrier.png",
output_path: Some(
"./images/output/lsb_text_png_steganography_hide_does_not_panic.png",
),
};
super::run_hide(config);
}
#[test]
fn lsb_text_png_steganography_reveal_does_not_panic() {
let config = RevealConfig {
strategy: Some("lsb_text_png_steganography"),
carrier_path: "./images/contains_hidden_text.png",
output_path: Some(
"./texts/output/lsb_text_png_steganography_reveal_does_not_panic.txt",
),
};
super::run_reveal(config);
}
}