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qwen/nodejs/node_modules/pg-connection-string/index.js

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+'use strict'
+
+//Parse method copied from https://github.com/brianc/node-postgres
+//Copyright (c) 2010-2014 Brian Carlson (brian.m.carlson@gmail.com)
+//MIT License
+
+//parses a connection string
+function parse(str, options = {}) {
+  //unix socket
+  if (str.charAt(0) === '/') {
+    const config = str.split(' ')
+    return { host: config[0], database: config[1] }
+  }
+
+  // Check for empty host in URL
+
+  const config = {}
+  let result
+  let dummyHost = false
+  if (/ |%[^a-f0-9]|%[a-f0-9][^a-f0-9]/i.test(str)) {
+    // Ensure spaces are encoded as %20
+    str = encodeURI(str).replace(/%25(\d\d)/g, '%$1')
+  }
+
+  try {
+    try {
+      result = new URL(str, 'postgres://base')
+    } catch (e) {
+      // The URL is invalid so try again with a dummy host
+      result = new URL(str.replace('@/', '@___DUMMY___/'), 'postgres://base')
+      dummyHost = true
+    }
+  } catch (err) {
+    // Remove the input from the error message to avoid leaking sensitive information
+    err.input && (err.input = '*****REDACTED*****')
+  }
+
+  // We'd like to use Object.fromEntries() here but Node.js 10 does not support it
+  for (const entry of result.searchParams.entries()) {
+    config[entry[0]] = entry[1]
+  }
+
+  config.user = config.user || decodeURIComponent(result.username)
+  config.password = config.password || decodeURIComponent(result.password)
+
+  if (result.protocol == 'socket:') {
+    config.host = decodeURI(result.pathname)
+    config.database = result.searchParams.get('db')
+    config.client_encoding = result.searchParams.get('encoding')
+    return config
+  }
+  const hostname = dummyHost ? '' : result.hostname
+  if (!config.host) {
+    // Only set the host if there is no equivalent query param.
+    config.host = decodeURIComponent(hostname)
+  } else if (hostname && /^%2f/i.test(hostname)) {
+    // Only prepend the hostname to the pathname if it is not a URL encoded Unix socket host.
+    result.pathname = hostname + result.pathname
+  }
+  if (!config.port) {
+    // Only set the port if there is no equivalent query param.
+    config.port = result.port
+  }
+
+  const pathname = result.pathname.slice(1) || null
+  config.database = pathname ? decodeURI(pathname) : null
+
+  if (config.ssl === 'true' || config.ssl === '1') {
+    config.ssl = true
+  }
+
+  if (config.ssl === '0') {
+    config.ssl = false
+  }
+
+  if (config.sslcert || config.sslkey || config.sslrootcert || config.sslmode) {
+    config.ssl = {}
+  }
+
+  // Only try to load fs if we expect to read from the disk
+  const fs = config.sslcert || config.sslkey || config.sslrootcert ? require('fs') : null
+
+  if (config.sslcert) {
+    config.ssl.cert = fs.readFileSync(config.sslcert).toString()
+  }
+
+  if (config.sslkey) {
+    config.ssl.key = fs.readFileSync(config.sslkey).toString()
+  }
+
+  if (config.sslrootcert) {
+    config.ssl.ca = fs.readFileSync(config.sslrootcert).toString()
+  }
+
+  if (options.useLibpqCompat && config.uselibpqcompat) {
+    throw new Error('Both useLibpqCompat and uselibpqcompat are set. Please use only one of them.')
+  }
+
+  if (config.uselibpqcompat === 'true' || options.useLibpqCompat) {
+    switch (config.sslmode) {
+      case 'disable': {
+        config.ssl = false
+        break
+      }
+      case 'prefer': {
+        config.ssl.rejectUnauthorized = false
+        break
+      }
+      case 'require': {
+        if (config.sslrootcert) {
+          // If a root CA is specified, behavior of `sslmode=require` will be the same as that of `verify-ca`
+          config.ssl.checkServerIdentity = function () {}
+        } else {
+          config.ssl.rejectUnauthorized = false
+        }
+        break
+      }
+      case 'verify-ca': {
+        if (!config.ssl.ca) {
+          throw new Error(
+            'SECURITY WARNING: Using sslmode=verify-ca requires specifying a CA with sslrootcert. If a public CA is used, verify-ca allows connections to a server that somebody else may have registered with the CA, making you vulnerable to Man-in-the-Middle attacks. Either specify a custom CA certificate with sslrootcert parameter or use sslmode=verify-full for proper security.'
+          )
+        }
+        config.ssl.checkServerIdentity = function () {}
+        break
+      }
+      case 'verify-full': {
+        break
+      }
+    }
+  } else {
+    switch (config.sslmode) {
+      case 'disable': {
+        config.ssl = false
+        break
+      }
+      case 'prefer':
+      case 'require':
+      case 'verify-ca':
+      case 'verify-full': {
+        break
+      }
+      case 'no-verify': {
+        config.ssl.rejectUnauthorized = false
+        break
+      }
+    }
+  }
+
+  return config
+}
+
+// convert pg-connection-string ssl config to a ClientConfig.ConnectionOptions
+function toConnectionOptions(sslConfig) {
+  const connectionOptions = Object.entries(sslConfig).reduce((c, [key, value]) => {
+    // we explicitly check for undefined and null instead of `if (value)` because some
+    // options accept falsy values. Example: `ssl.rejectUnauthorized = false`
+    if (value !== undefined && value !== null) {
+      c[key] = value
+    }
+
+    return c
+  }, {})
+
+  return connectionOptions
+}
+
+// convert pg-connection-string config to a ClientConfig
+function toClientConfig(config) {
+  const poolConfig = Object.entries(config).reduce((c, [key, value]) => {
+    if (key === 'ssl') {
+      const sslConfig = value
+
+      if (typeof sslConfig === 'boolean') {
+        c[key] = sslConfig
+      }
+
+      if (typeof sslConfig === 'object') {
+        c[key] = toConnectionOptions(sslConfig)
+      }
+    } else if (value !== undefined && value !== null) {
+      if (key === 'port') {
+        // when port is not specified, it is converted into an empty string
+        // we want to avoid NaN or empty string as a values in ClientConfig
+        if (value !== '') {
+          const v = parseInt(value, 10)
+          if (isNaN(v)) {
+            throw new Error(`Invalid ${key}: ${value}`)
+          }
+
+          c[key] = v
+        }
+      } else {
+        c[key] = value
+      }
+    }
+
+    return c
+  }, {})
+
+  return poolConfig
+}
+
+// parses a connection string into ClientConfig
+function parseIntoClientConfig(str) {
+  return toClientConfig(parse(str))
+}
+
+module.exports = parse
+
+parse.parse = parse
+parse.toClientConfig = toClientConfig
+parse.parseIntoClientConfig = parseIntoClientConfig