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commit c95ef423d78d9a2ec0a8e4141c78165434685c6f
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Tue Sep 13 16:10:20 2022 +0200
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nss: Implement --no-addrconfig option for getent
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The ahosts, ahostsv4, ahostsv6 commands unconditionally pass
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AI_ADDRCONFIG to getaddrinfo, which is not always desired.
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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(cherry picked from commit a623f13adfac47c8634a7288e08f821a846bc650)
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diff --git a/nss/getent.c b/nss/getent.c
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index ec48ba4bf1f5f788..0f4d549b05da73ac 100644
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--- a/nss/getent.c
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+++ b/nss/getent.c
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@@ -59,6 +59,8 @@ static const struct argp_option args_options[] =
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{
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{ "service", 's', N_("CONFIG"), 0, N_("Service configuration to be used") },
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{ "no-idn", 'i', NULL, 0, N_("disable IDN encoding") },
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+ { "no-addrconfig", 'A', NULL, 0,
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+ N_("do not filter out unsupported IPv4/IPv6 addresses (with ahosts*)") },
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{ NULL, 0, NULL, 0, NULL },
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};
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@@ -80,6 +82,9 @@ static struct argp argp =
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/* Additional getaddrinfo flags for IDN encoding. */
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static int idn_flags = AI_IDN | AI_CANONIDN;
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+/* Set to 0 by --no-addrconfig. */
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+static int addrconfig_flags = AI_ADDRCONFIG;
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+
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/* Print the version information. */
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static void
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print_version (FILE *stream, struct argp_state *state)
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@@ -347,7 +352,7 @@ ahosts_keys_int (int af, int xflags, int number, char *key[])
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struct addrinfo hint;
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memset (&hint, '\0', sizeof (hint));
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- hint.ai_flags = (AI_V4MAPPED | AI_ADDRCONFIG | AI_CANONNAME
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+ hint.ai_flags = (AI_V4MAPPED | addrconfig_flags | AI_CANONNAME
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| idn_flags | xflags);
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hint.ai_family = af;
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@@ -906,6 +911,10 @@ parse_option (int key, char *arg, struct argp_state *state)
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idn_flags = 0;
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break;
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+ case 'A':
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+ addrconfig_flags = 0;
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+ break;
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+
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default:
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return ARGP_ERR_UNKNOWN;
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}
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