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Diffstat (limited to 'testing/webdriver/src/capabilities.rs')
| -rw-r--r-- | testing/webdriver/src/capabilities.rs | 754 |
1 files changed, 754 insertions, 0 deletions
diff --git a/testing/webdriver/src/capabilities.rs b/testing/webdriver/src/capabilities.rs new file mode 100644 index 0000000000..53dd8306b0 --- /dev/null +++ b/testing/webdriver/src/capabilities.rs @@ -0,0 +1,754 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +use crate::common::MAX_SAFE_INTEGER; +use crate::error::{ErrorStatus, WebDriverError, WebDriverResult}; +use serde_json::{Map, Value}; +use url::Url; + +pub type Capabilities = Map<String, Value>; + +/// Trait for objects that can be used to inspect browser capabilities +/// +/// The main methods in this trait are called with a Capabilites object +/// resulting from a full set of potential capabilites for the session. Given +/// those Capabilities they return a property of the browser instance that +/// would be initiated. In many cases this will be independent of the input, +/// but in the case of e.g. browser version, it might depend on a path to the +/// binary provided as a capability. +pub trait BrowserCapabilities { + /// Set up the Capabilites object + /// + /// Typically used to create any internal caches + fn init(&mut self, _: &Capabilities); + + /// Name of the browser + fn browser_name(&mut self, _: &Capabilities) -> WebDriverResult<Option<String>>; + + /// Version number of the browser + fn browser_version(&mut self, _: &Capabilities) -> WebDriverResult<Option<String>>; + + /// Compare actual browser version to that provided in a version specifier + /// + /// Parameters are the actual browser version and the comparison string, + /// respectively. The format of the comparison string is + /// implementation-defined. + fn compare_browser_version(&mut self, version: &str, comparison: &str) + -> WebDriverResult<bool>; + + /// Name of the platform/OS + fn platform_name(&mut self, _: &Capabilities) -> WebDriverResult<Option<String>>; + + /// Whether insecure certificates are supported + fn accept_insecure_certs(&mut self, _: &Capabilities) -> WebDriverResult<bool>; + + /// Indicates whether driver supports all of the window resizing and + /// repositioning commands. + fn set_window_rect(&mut self, _: &Capabilities) -> WebDriverResult<bool>; + + /// Indicates that interactability checks will be applied to `<input type=file>`. + fn strict_file_interactability(&mut self, _: &Capabilities) -> WebDriverResult<bool>; + + /// Whether a WebSocket URL for the created session has to be returned + fn web_socket_url(&mut self, _: &Capabilities) -> WebDriverResult<bool>; + + fn accept_proxy( + &mut self, + proxy_settings: &Map<String, Value>, + _: &Capabilities, + ) -> WebDriverResult<bool>; + + /// Type check custom properties + /// + /// Check that custom properties containing ":" have the correct data types. + /// Properties that are unrecognised must be ignored i.e. return without + /// error. + fn validate_custom(&mut self, name: &str, value: &Value) -> WebDriverResult<()>; + + /// Check if custom properties are accepted capabilites + /// + /// Check that custom properties containing ":" are compatible with + /// the implementation. + fn accept_custom( + &mut self, + name: &str, + value: &Value, + merged: &Capabilities, + ) -> WebDriverResult<bool>; +} + +/// Trait to abstract over various version of the new session parameters +/// +/// This trait is expected to be implemented on objects holding the capabilities +/// from a new session command. +pub trait CapabilitiesMatching { + /// Match the BrowserCapabilities against some candidate capabilites + /// + /// Takes a BrowserCapabilites object and returns a set of capabilites that + /// are valid for that browser, if any, or None if there are no matching + /// capabilities. + fn match_browser<T: BrowserCapabilities>( + &self, + browser_capabilities: &mut T, + ) -> WebDriverResult<Option<Capabilities>>; +} + +#[derive(Debug, PartialEq, Serialize, Deserialize)] +pub struct SpecNewSessionParameters { + #[serde(default = "Capabilities::default")] + pub alwaysMatch: Capabilities, + #[serde(default = "firstMatch_default")] + pub firstMatch: Vec<Capabilities>, +} + +impl Default for SpecNewSessionParameters { + fn default() -> Self { + SpecNewSessionParameters { + alwaysMatch: Capabilities::new(), + firstMatch: vec![Capabilities::new()], + } + } +} + +fn firstMatch_default() -> Vec<Capabilities> { + vec![Capabilities::default()] +} + +impl SpecNewSessionParameters { + fn validate<T: BrowserCapabilities>( + &self, + mut capabilities: Capabilities, + browser_capabilities: &mut T, + ) -> WebDriverResult<Capabilities> { + // Filter out entries with the value `null` + let null_entries = capabilities + .iter() + .filter(|&(_, value)| *value == Value::Null) + .map(|(k, _)| k.clone()) + .collect::<Vec<String>>(); + for key in null_entries { + capabilities.remove(&key); + } + + for (key, value) in &capabilities { + match &**key { + x @ "acceptInsecureCerts" + | x @ "setWindowRect" + | x @ "strictFileInteractability" + | x @ "webSocketUrl" => { + if !value.is_boolean() { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("{} is not boolean: {}", x, value), + )); + } + } + x @ "browserName" | x @ "browserVersion" | x @ "platformName" => { + if !value.is_string() { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("{} is not a string: {}", x, value), + )); + } + } + "pageLoadStrategy" => SpecNewSessionParameters::validate_page_load_strategy(value)?, + "proxy" => SpecNewSessionParameters::validate_proxy(value)?, + "timeouts" => SpecNewSessionParameters::validate_timeouts(value)?, + "unhandledPromptBehavior" => { + SpecNewSessionParameters::validate_unhandled_prompt_behaviour(value)? + } + x => { + if !x.contains(':') { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!( + "{} is not the name of a known capability or extension capability", + x + ), + )); + } else { + browser_capabilities.validate_custom(x, value)? + } + } + } + } + + // With a value of `false` the capability needs to be removed. + if let Some(Value::Bool(false)) = capabilities.get(&"webSocketUrl".to_string()) { + capabilities.remove(&"webSocketUrl".to_string()); + } + + Ok(capabilities) + } + + fn validate_page_load_strategy(value: &Value) -> WebDriverResult<()> { + match value { + Value::String(x) => match &**x { + "normal" | "eager" | "none" => {} + x => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("Invalid page load strategy: {}", x), + )) + } + }, + _ => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + "pageLoadStrategy is not a string", + )) + } + } + Ok(()) + } + + fn validate_proxy(proxy_value: &Value) -> WebDriverResult<()> { + let obj = try_opt!( + proxy_value.as_object(), + ErrorStatus::InvalidArgument, + "proxy is not an object" + ); + + for (key, value) in obj { + match &**key { + "proxyType" => match value.as_str() { + Some("pac") | Some("direct") | Some("autodetect") | Some("system") + | Some("manual") => {} + Some(x) => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("Invalid proxyType value: {}", x), + )) + } + None => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("proxyType is not a string: {}", value), + )) + } + }, + + "proxyAutoconfigUrl" => match value.as_str() { + Some(x) => { + Url::parse(x).map_err(|_| { + WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("proxyAutoconfigUrl is not a valid URL: {}", x), + ) + })?; + } + None => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + "proxyAutoconfigUrl is not a string", + )) + } + }, + + "ftpProxy" => SpecNewSessionParameters::validate_host(value, "ftpProxy")?, + "httpProxy" => SpecNewSessionParameters::validate_host(value, "httpProxy")?, + "noProxy" => SpecNewSessionParameters::validate_no_proxy(value)?, + "sslProxy" => SpecNewSessionParameters::validate_host(value, "sslProxy")?, + "socksProxy" => SpecNewSessionParameters::validate_host(value, "socksProxy")?, + "socksVersion" => { + if !value.is_number() { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("socksVersion is not a number: {}", value), + )); + } + } + + x => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("Invalid proxy configuration entry: {}", x), + )) + } + } + } + + Ok(()) + } + + fn validate_no_proxy(value: &Value) -> WebDriverResult<()> { + match value.as_array() { + Some(hosts) => { + for host in hosts { + match host.as_str() { + Some(_) => {} + None => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("noProxy item is not a string: {}", host), + )) + } + } + } + } + None => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("noProxy is not an array: {}", value), + )) + } + } + + Ok(()) + } + + /// Validate whether a named capability is JSON value is a string + /// containing a host and possible port + fn validate_host(value: &Value, entry: &str) -> WebDriverResult<()> { + match value.as_str() { + Some(host) => { + if host.contains("://") { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("{} must not contain a scheme: {}", entry, host), + )); + } + + // Temporarily add a scheme so the host can be parsed as URL + let url = Url::parse(&format!("http://{}", host)).map_err(|_| { + WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("{} is not a valid URL: {}", entry, host), + ) + })?; + + if url.username() != "" + || url.password().is_some() + || url.path() != "/" + || url.query().is_some() + || url.fragment().is_some() + { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("{} is not of the form host[:port]: {}", entry, host), + )); + } + } + + None => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("{} is not a string: {}", entry, value), + )) + } + } + + Ok(()) + } + + fn validate_timeouts(value: &Value) -> WebDriverResult<()> { + let obj = try_opt!( + value.as_object(), + ErrorStatus::InvalidArgument, + "timeouts capability is not an object" + ); + + for (key, value) in obj { + match &**key { + _x @ "script" if value.is_null() => {} + + x @ "script" | x @ "pageLoad" | x @ "implicit" => { + let timeout = try_opt!( + value.as_f64(), + ErrorStatus::InvalidArgument, + format!("{} timeouts value is not a number: {}", x, value) + ); + if timeout < 0.0 || timeout.fract() != 0.0 { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!( + "'{}' timeouts value is not a positive Integer: {}", + x, timeout + ), + )); + } + if (timeout as u64) > MAX_SAFE_INTEGER { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!( + "'{}' timeouts value is greater than maximum safe integer: {}", + x, timeout + ), + )); + } + } + + x => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("Invalid timeouts capability entry: {}", x), + )) + } + } + } + + Ok(()) + } + + fn validate_unhandled_prompt_behaviour(value: &Value) -> WebDriverResult<()> { + let behaviour = try_opt!( + value.as_str(), + ErrorStatus::InvalidArgument, + format!("unhandledPromptBehavior is not a string: {}", value) + ); + + match behaviour { + "accept" | "accept and notify" | "dismiss" | "dismiss and notify" | "ignore" => {} + x => { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + format!("Invalid unhandledPromptBehavior value: {}", x), + )) + } + } + + Ok(()) + } +} + +impl CapabilitiesMatching for SpecNewSessionParameters { + fn match_browser<T: BrowserCapabilities>( + &self, + browser_capabilities: &mut T, + ) -> WebDriverResult<Option<Capabilities>> { + let default = vec![Map::new()]; + let capabilities_list = if self.firstMatch.is_empty() { + &default + } else { + &self.firstMatch + }; + + let merged_capabilities = capabilities_list + .iter() + .map(|first_match_entry| { + if first_match_entry + .keys() + .any(|k| self.alwaysMatch.contains_key(k)) + { + return Err(WebDriverError::new( + ErrorStatus::InvalidArgument, + "firstMatch key shadowed a value in alwaysMatch", + )); + } + let mut merged = self.alwaysMatch.clone(); + for (key, value) in first_match_entry.clone() { + merged.insert(key, value); + } + Ok(merged) + }) + .map(|merged| merged.and_then(|x| self.validate(x, browser_capabilities))) + .collect::<WebDriverResult<Vec<Capabilities>>>()?; + + let selected = merged_capabilities + .iter() + .find(|merged| { + browser_capabilities.init(merged); + + for (key, value) in merged.iter() { + match &**key { + "browserName" => { + let browserValue = browser_capabilities + .browser_name(merged) + .ok() + .and_then(|x| x); + + if value.as_str() != browserValue.as_deref() { + return false; + } + } + "browserVersion" => { + let browserValue = browser_capabilities + .browser_version(merged) + .ok() + .and_then(|x| x); + // We already validated this was a string + let version_cond = value.as_str().unwrap_or(""); + if let Some(version) = browserValue { + if !browser_capabilities + .compare_browser_version(&version, version_cond) + .unwrap_or(false) + { + return false; + } + } else { + return false; + } + } + "platformName" => { + let browserValue = browser_capabilities + .platform_name(merged) + .ok() + .and_then(|x| x); + if value.as_str() != browserValue.as_deref() { + return false; + } + } + "acceptInsecureCerts" => { + if value.as_bool().unwrap_or(false) + && !browser_capabilities + .accept_insecure_certs(merged) + .unwrap_or(false) + { + return false; + } + } + "setWindowRect" => { + if value.as_bool().unwrap_or(false) + && !browser_capabilities + .set_window_rect(merged) + .unwrap_or(false) + { + return false; + } + } + "strictFileInteractability" => { + if value.as_bool().unwrap_or(false) + && !browser_capabilities + .strict_file_interactability(merged) + .unwrap_or(false) + { + return false; + } + } + "proxy" => { + let default = Map::new(); + let proxy = value.as_object().unwrap_or(&default); + if !browser_capabilities + .accept_proxy(proxy, merged) + .unwrap_or(false) + { + return false; + } + } + "webSocketUrl" => { + if value.as_bool().unwrap_or(false) + && !browser_capabilities.web_socket_url(merged).unwrap_or(false) + { + return false; + } + } + name => { + if name.contains(':') { + if !browser_capabilities + .accept_custom(name, value, merged) + .unwrap_or(false) + { + return false; + } + } else { + // Accept the capability + } + } + } + } + + true + }) + .cloned(); + Ok(selected) + } +} + +#[derive(Debug, PartialEq, Serialize, Deserialize)] +pub struct LegacyNewSessionParameters { + #[serde(rename = "desiredCapabilities", default = "Capabilities::default")] + pub desired: Capabilities, + #[serde(rename = "requiredCapabilities", default = "Capabilities::default")] + pub required: Capabilities, +} + +impl CapabilitiesMatching for LegacyNewSessionParameters { + fn match_browser<T: BrowserCapabilities>( + &self, + browser_capabilities: &mut T, + ) -> WebDriverResult<Option<Capabilities>> { + // For now don't do anything much, just merge the + // desired and required and return the merged list. + + let mut capabilities: Capabilities = Map::new(); + self.required.iter().chain(self.desired.iter()).fold( + &mut capabilities, + |caps, (key, value)| { + if !caps.contains_key(key) { + caps.insert(key.clone(), value.clone()); + } + caps + }, + ); + browser_capabilities.init(&capabilities); + Ok(Some(capabilities)) + } +} + +#[cfg(test)] +mod tests { + use super::*; + use crate::test::assert_de; + use serde_json::{self, json}; + + #[test] + fn test_json_spec_new_session_parameters_alwaysMatch_only() { + let caps = SpecNewSessionParameters { + alwaysMatch: Capabilities::new(), + firstMatch: vec![Capabilities::new()], + }; + assert_de(&caps, json!({"alwaysMatch": {}})); + } + + #[test] + fn test_json_spec_new_session_parameters_firstMatch_only() { + let caps = SpecNewSessionParameters { + alwaysMatch: Capabilities::new(), + firstMatch: vec![Capabilities::new()], + }; + assert_de(&caps, json!({"firstMatch": [{}]})); + } + + #[test] + fn test_json_spec_new_session_parameters_alwaysMatch_null() { + let json = json!({ + "alwaysMatch": null, + "firstMatch": [{}], + }); + assert!(serde_json::from_value::<SpecNewSessionParameters>(json).is_err()); + } + + #[test] + fn test_json_spec_new_session_parameters_firstMatch_null() { + let json = json!({ + "alwaysMatch": {}, + "firstMatch": null, + }); + assert!(serde_json::from_value::<SpecNewSessionParameters>(json).is_err()); + } + + #[test] + fn test_json_spec_new_session_parameters_both_empty() { + let json = json!({ + "alwaysMatch": {}, + "firstMatch": [{}], + }); + let caps = SpecNewSessionParameters { + alwaysMatch: Capabilities::new(), + firstMatch: vec![Capabilities::new()], + }; + + assert_de(&caps, json); + } + + #[test] + fn test_json_spec_new_session_parameters_both_with_capability() { + let json = json!({ + "alwaysMatch": {"foo": "bar"}, + "firstMatch": [{"foo2": "bar2"}], + }); + let mut caps = SpecNewSessionParameters { + alwaysMatch: Capabilities::new(), + firstMatch: vec![Capabilities::new()], + }; + caps.alwaysMatch.insert("foo".into(), "bar".into()); + caps.firstMatch[0].insert("foo2".into(), "bar2".into()); + + assert_de(&caps, json); + } + + #[test] + fn test_json_spec_legacy_new_session_parameters_desired_only() { + let caps = LegacyNewSessionParameters { + desired: Capabilities::new(), + required: Capabilities::new(), + }; + assert_de(&caps, json!({"desiredCapabilities": {}})); + } + + #[test] + fn test_json_spec_legacy_new_session_parameters_required_only() { + let caps = LegacyNewSessionParameters { + desired: Capabilities::new(), + required: Capabilities::new(), + }; + assert_de(&caps, json!({"requiredCapabilities": {}})); + } + + #[test] + fn test_json_spec_legacy_new_session_parameters_desired_null() { + let json = json!({ + "desiredCapabilities": null, + "requiredCapabilities": {}, + }); + assert!(serde_json::from_value::<LegacyNewSessionParameters>(json).is_err()); + } + + #[test] + fn test_json_spec_legacy_new_session_parameters_required_null() { + let json = json!({ + "desiredCapabilities": {}, + "requiredCapabilities": null, + }); + assert!(serde_json::from_value::<LegacyNewSessionParameters>(json).is_err()); + } + + #[test] + fn test_json_spec_legacy_new_session_parameters_both_empty() { + let json = json!({ + "desiredCapabilities": {}, + "requiredCapabilities": {}, + }); + let caps = LegacyNewSessionParameters { + desired: Capabilities::new(), + required: Capabilities::new(), + }; + + assert_de(&caps, json); + } + + #[test] + fn test_json_spec_legacy_new_session_parameters_both_with_capabilities() { + let json = json!({ + "desiredCapabilities": {"foo": "bar"}, + "requiredCapabilities": {"foo2": "bar2"}, + }); + let mut caps = LegacyNewSessionParameters { + desired: Capabilities::new(), + required: Capabilities::new(), + }; + caps.desired.insert("foo".into(), "bar".into()); + caps.required.insert("foo2".into(), "bar2".into()); + + assert_de(&caps, json); + } + + #[test] + fn test_validate_proxy() { + fn validate_proxy(v: Value) -> WebDriverResult<()> { + SpecNewSessionParameters::validate_proxy(&v) + } + + // proxy hosts + validate_proxy(json!({"httpProxy": "127.0.0.1"})).unwrap(); + validate_proxy(json!({"httpProxy": "127.0.0.1:"})).unwrap(); + validate_proxy(json!({"httpProxy": "127.0.0.1:3128"})).unwrap(); + validate_proxy(json!({"httpProxy": "localhost"})).unwrap(); + validate_proxy(json!({"httpProxy": "localhost:3128"})).unwrap(); + validate_proxy(json!({"httpProxy": "[2001:db8::1]"})).unwrap(); + validate_proxy(json!({"httpProxy": "[2001:db8::1]:3128"})).unwrap(); + validate_proxy(json!({"httpProxy": "example.org"})).unwrap(); + validate_proxy(json!({"httpProxy": "example.org:3128"})).unwrap(); + + assert!(validate_proxy(json!({"httpProxy": "http://example.org"})).is_err()); + assert!(validate_proxy(json!({"httpProxy": "example.org:-1"})).is_err()); + assert!(validate_proxy(json!({"httpProxy": "2001:db8::1"})).is_err()); + + // no proxy for manual proxy type + validate_proxy(json!({"noProxy": ["foo"]})).unwrap(); + + assert!(validate_proxy(json!({"noProxy": "foo"})).is_err()); + assert!(validate_proxy(json!({"noProxy": [42]})).is_err()); + } +} |