ronutz

Explicador e validador de arquivo PAC

Cole um arquivo Proxy Auto-Config e ele mostra as diretivas de proxy que retorna, as funções auxiliares PAC que usa (com as que consultam DNS sinalizadas), verificações de estrutura e correção, e se é um arquivo de direcionamento de proxy explícito da Netskope. Nunca executa o arquivo.

Documentação (Markdown)

Redes

Roda localmente no seu navegador e nunca executa o arquivo. Nada do que você cola sai desta página.

Constatações
  • Paste a PAC file (a FindProxyForURL(url, host) function) to have its proxy directives, helper functions, and structure explained. This tool reads the file; it never runs it.
Valores de retorno que um PAC pode produzir
  • DIRECTConnect straight to the destination, no proxy.
  • PROXY host:portUse the given HTTP proxy.
  • SOCKS host:portUse the given SOCKS server.
  • HTTP / HTTPS / SOCKS4 / SOCKS5 host:portNewer keywords for a specific proxy type. Semicolon-separated parts are tried left to right as failover.
Funções auxiliares PAC usadas
  • isPlainHostNameTrue when the host has no dots, i.e. an unqualified single-label name. The classic way to send intranet short names DIRECT.
  • dnsDomainIsTrue when the host ends in the given domain suffix. Pure string comparison; no DNS.
  • localHostOrDomainIsTrue on an exact hostname match, or when only the unqualified name is given and it matches. Pure string comparison.
  • isResolvableTries to resolve the host and returns true on success. This consults DNS and can block; use it sparingly.
  • isInNetTrue when the host's IP is in the given subnet (pattern + mask). If a hostname is passed, it is resolved via DNS first, so this can block.
  • dnsResolveResolves a hostname to a dotted IP string. Consults DNS and can block.
  • convert_addrPacks a dotted IPv4 address into a single 32-bit number. Pure arithmetic.
  • myIpAddressReturns the machine's own IP. Unreliable on multi-homed hosts and may fall back to a loopback address like 127.0.0.1; treat its result with caution.
  • dnsDomainLevelsReturns the number of dots in the host. Pure string operation.
  • shExpMatchShell-glob match (* and ?, and [chars] in some browsers). This is NOT a regular expression; regex syntax will not work here.
  • weekdayRangeTrue within a weekday range. Note that the bounds are ordered, so the order of the two days matters.
  • dateRangeTrue within a date range. The bounds are ordered.
  • timeRangeTrue within a time-of-day range. The bounds are ordered.
  • myIpAddressExMicrosoft IPv6 extension of myIpAddress; may return a semicolon-separated list of addresses. Supported by Chromium, not by Firefox.
  • dnsResolveExMicrosoft IPv6 extension of dnsResolve. Consults DNS; Chromium-only.
  • isResolvableExMicrosoft IPv6 extension of isResolvable. Consults DNS; Chromium-only.
  • isInNetExMicrosoft IPv6 extension of isInNet (CIDR prefix form). May consult DNS; Chromium-only.
  • sortIpAddressListMicrosoft helper that sorts a list of IPs by preference. Pure; Chromium-only.
Endpoint da APIGEThttps://ronutz.com/api/v1/pac-file-explainerDocumentado, não servido. Abre a especificação.

Referências