Class IO::POpenCall

A system command executed via the IO.popen method. Signature:

popen([env,] cmd, mode="r" [, opt]) -> io
popen([env,] cmd, mode="r" [, opt]) {|io| block } -> obj

IO.popen does different things based on the value of cmd:

"-"                                      : fork
commandline                              : command line string which is passed to a shell
[env, cmdname, arg1, ..., opts]          : command name and zero or more arguments (no shell)
[env, [cmdname, argv0], arg1, ..., opts] : command name, argv[0] and zero or more arguments (no shell)
(env and opts are optional.)

Examples:

IO.popen("cat foo.txt | tail")
IO.popen({some_env_var: "123"}, "cat foo.txt | tail")
IO.popen(["cat", "foo.txt"])
IO.popen([{some_env_var: "123"}, "cat", "foo.txt"])
IO.popen([["cat", "argv0"], "foo.txt"])
IO.popen([{some_env_var: "123"}, ["cat", "argv0"], "foo.txt"])

Ruby documentation: https://docs.ruby-lang.org/en/3.1/IO.html#method-c-popen

Import path

import codeql.ruby.frameworks.core.IO

Direct supertypes

Range

Indirect supertypes

Predicates

getAnArgument	Gets an argument to this execution that specifies the command or an argument to it.
isShellInterpreted	Holds if a shell interprets `arg`.

Inherited predicates

asCallable	Gets the callable corresponding to this block, lambda expression, or call to `proc` or `lambda`.	from Node
asExpr	Gets the expression corresponding to this node, if any.	from Node
asParameter	Gets the parameter corresponding to this node, if any.	from Node
backtrack	Starts backtracking from this node using API graphs.	from Node
getALocalSource	Gets a local source node from which data may flow to this node in zero or more local data-flow steps.	from Node
getAPredecessor	Gets a data flow node from which data may flow to this node in one local step.	from Node
getASuccessor	Gets a data flow node to which data may flow from this node in one local step.	from Node
getConstantValue	Gets the constant value of this expression, if any.	from Node
getEnclosingMethod	Gets the enclosing method, if any.	from Node
getLocation	Gets the location of this node.	from Node
hasLocationInfo	Holds if this element is at the specified location. The location spans column `startcolumn` of line `startline` to column `endcolumn` of line `endline` in file `filepath`. For more information, see Locations.	from Node
toString	Gets a textual representation of this node.	from Node

Charpred

POpenCall