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* Implemented keystore
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Anna Kocheshkova
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May 11, 2018
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| // | ||
| // Parser for the output of the security(1) command line. | ||
| // | ||
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| import * as es from "event-stream"; | ||
| import * as stream from "stream"; | ||
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| // | ||
| // Regular expressions that match the various fields in the input | ||
| // | ||
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| // Fields at the root - not attributes | ||
| const rootFieldRe = /^([^: \t]+):(?: (?:"([^"]+)")|(.*))?$/; | ||
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| // Attribute values, this gets a little more complicated | ||
| // tslint:disable-next-line:no-regex-spaces | ||
| const attrRe = /^ (?:(0x[0-9a-fA-F]+) |"([a-z]{4})")<[^>]+>=(?:(<NULL>)|"([^"]+)"|(0x[0-9a-fA-F]+)(?: "([^"]+)")|(.*)?)/; | ||
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| // | ||
| // Stream based parser for the OSX security(1) program output. | ||
| // Implements a simple state machine. States are: | ||
| // | ||
| // 0 - Waiting for the initial "keychain" string. | ||
| // 1 - Waiting for the "attributes" string. adds any properties to the | ||
| // current entry object being parsed while waiting. | ||
| // 2 - reading attributes. Continues adding the attributes to the | ||
| // current entry object until we hit either a non-indented line | ||
| // or end. At which point we emit. | ||
| // | ||
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| export class OsxSecurityParsingStream extends stream.Transform { | ||
| private currentEntry: any; | ||
| private inAttributes: boolean; | ||
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| constructor() { | ||
| super({ objectMode: true }); | ||
| this.currentEntry = null; | ||
| this.inAttributes = false; | ||
| } | ||
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| public _transform(chunk: any, _encoding: string, callback: { (err?: Error): void }): void { | ||
| const line = chunk.toString(); | ||
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| // debug(`Parsing line [${line}]`); | ||
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| const rootMatch = line.match(rootFieldRe); | ||
| if (rootMatch) { | ||
| this.processRootLine(rootMatch[1], rootMatch[2] || rootMatch[3]); | ||
| } else { | ||
| const attrMatch = line.match(attrRe); | ||
| if (attrMatch) { | ||
| // Did we match a four-char named field? We don't care about hex fields | ||
| if (attrMatch[2]) { | ||
| // We skip nulls, and grab text rather than hex encoded versions of value | ||
| const value = attrMatch[6] || attrMatch[4]; | ||
| if (value) { | ||
| this.processAttributeLine(attrMatch[2], value); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| callback(); | ||
| } | ||
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| public _flush(callback: { (err?: Error): void }): void { | ||
| this.emitCurrentEntry(); | ||
| callback(); | ||
| } | ||
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| public emitCurrentEntry(): void { | ||
| if (this.currentEntry) { | ||
| this.push(this.currentEntry); | ||
| this.currentEntry = null; | ||
| } | ||
| } | ||
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| public processRootLine(key: string, value: string): void { | ||
| //debug(`matched root line`); | ||
| if (this.inAttributes) { | ||
| // debug(`was in attributes, emitting`); | ||
| this.emitCurrentEntry(); | ||
| this.inAttributes = false; | ||
| } | ||
| if (key === "attributes") { | ||
| // debug(`now in attributes`); | ||
| this.inAttributes = true; | ||
| } else { | ||
| // debug(`adding root attribute ${key} with value ${value} to object`); | ||
| this.currentEntry = this.currentEntry || {}; | ||
| this.currentEntry[key] = value; | ||
| } | ||
| } | ||
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| public processAttributeLine(key: string, value: string): void { | ||
| //debug(`adding attribute ${key} with value ${value} to object`); | ||
| this.currentEntry[key] = value; | ||
| } | ||
| } | ||
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| export function createOsxSecurityParsingStream(): NodeJS.ReadWriteStream { | ||
| return es.pipeline(es.split(), new OsxSecurityParsingStream()); | ||
| } |
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