diff --git a/.gitignore b/.gitignore
index 0e1d428ab0..403c16c339 100644
--- a/.gitignore
+++ b/.gitignore
@@ -238,6 +238,7 @@
/test-network
/test-network-tables
/test-ns
+/test-nss
/test-parse-util
/test-path
/test-path-lookup
diff --git a/Makefile.am b/Makefile.am
index 7668c541cb..4ff9276fdd 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4874,6 +4874,17 @@ EXTRA_DIST += \
units/systemd-timesyncd.service.in \
src/timesync/timesyncd.conf.in
+# ------------------------------------------------------------------------------
+test_nss_SOURCES = \
+ src/test/test-nss.c
+
+test_nss_LDADD = \
+ libsystemd-internal.la \
+ -ldl
+
+tests += \
+ test-nss
+
# ------------------------------------------------------------------------------
if HAVE_MYHOSTNAME
libnss_myhostname_la_SOURCES = \
diff --git a/configure.ac b/configure.ac
index cb14abda05..464f318dfc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1019,9 +1019,9 @@ have_machined=no
AC_ARG_ENABLE(machined, AS_HELP_STRING([--disable-machined], [disable machine daemon]))
if test "x$enable_machined" != "xno"; then
have_machined=yes
+ AC_DEFINE(HAVE_MACHINED, [1], [systemd-machined is enabled])
fi
AM_CONDITIONAL(ENABLE_MACHINED, [test "$have_machined" = "yes"])
-AS_IF([test "$have_machined" = "yes"], [ AC_DEFINE(HAVE_MACHINED, [1], [Machined support available]) ])
# ------------------------------------------------------------------------------
have_importd=no
@@ -1131,6 +1131,7 @@ AS_IF([test "x$enable_resolved" != "xno"], [
have_resolved=yes
M4_DEFINES="$M4_DEFINES -DENABLE_RESOLVED"
+ AC_DEFINE(HAVE_RESOLVED, [1], [systemd-resolved is enabled])
])
AM_CONDITIONAL(ENABLE_RESOLVED, [test "$have_resolved" = "yes"])
@@ -1332,6 +1333,7 @@ if test "x$enable_myhostname" != "xno"; then
AC_CHECK_FUNCS([gethostbyaddr gethostbyname gettimeofday inet_ntoa memset select socket strcspn strdup strerror strncasecmp strcasecmp strspn])
have_myhostname=yes
+ AC_DEFINE(HAVE_MYHOSTNAME, [1], [nss-myhostname is enabled])
fi
AM_CONDITIONAL(HAVE_MYHOSTNAME, [test "$have_myhostname" = "yes"])
diff --git a/src/basic/nss-util.h b/src/basic/nss-util.h
index df565a3593..bf7c4854fc 100644
--- a/src/basic/nss-util.h
+++ b/src/basic/nss-util.h
@@ -154,3 +154,46 @@ enum nss_status _nss_##module##_getgrgid_r( \
struct group *gr, \
char *buffer, size_t buflen, \
int *errnop) _public_
+
+typedef enum nss_status (*_nss_gethostbyname4_r_t)(
+ const char *name,
+ struct gaih_addrtuple **pat,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp);
+
+typedef enum nss_status (*_nss_gethostbyname3_r_t)(
+ const char *name,
+ int af,
+ struct hostent *result,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp,
+ char **canonp);
+
+typedef enum nss_status (*_nss_gethostbyname2_r_t)(
+ const char *name,
+ int af,
+ struct hostent *result,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop);
+
+typedef enum nss_status (*_nss_gethostbyname_r_t)(
+ const char *name,
+ struct hostent *result,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop);
+
+typedef enum nss_status (*_nss_gethostbyaddr2_r_t)(
+ const void* addr, socklen_t len,
+ int af,
+ struct hostent *result,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop,
+ int32_t *ttlp);
+typedef enum nss_status (*_nss_gethostbyaddr_r_t)(
+ const void* addr, socklen_t len,
+ int af,
+ struct hostent *host,
+ char *buffer, size_t buflen,
+ int *errnop, int *h_errnop);
diff --git a/src/basic/string-table.h b/src/basic/string-table.h
index b180488fe8..d88625fca7 100644
--- a/src/basic/string-table.h
+++ b/src/basic/string-table.h
@@ -56,6 +56,38 @@ ssize_t string_table_lookup(const char * const *table, size_t len, const char *k
return (type) string_table_lookup(name##_table, ELEMENTSOF(name##_table), s); \
}
+#define _DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,scope) \
+ scope int name##_to_string_alloc(type i, char **str) { \
+ char *s; \
+ if (i < 0 || i > max) \
+ return -ERANGE; \
+ if (i < (type) ELEMENTSOF(name##_table)) { \
+ s = strdup(name##_table[i]); \
+ if (!s) \
+ return -ENOMEM; \
+ } else { \
+ if (asprintf(&s, "%i", i) < 0) \
+ return -ENOMEM; \
+ } \
+ *str = s; \
+ return 0; \
+ }
+
+#define _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,scope) \
+ type name##_from_string(const char *s) { \
+ type i; \
+ unsigned u = 0; \
+ if (!s) \
+ return (type) -1; \
+ for (i = 0; i < (type) ELEMENTSOF(name##_table); i++) \
+ if (streq_ptr(name##_table[i], s)) \
+ return i; \
+ if (safe_atou(s, &u) >= 0 && u <= max) \
+ return (type) u; \
+ return (type) -1; \
+ } \
+
+
#define _DEFINE_STRING_TABLE_LOOKUP(name,type,scope) \
_DEFINE_STRING_TABLE_LOOKUP_TO_STRING(name,type,scope) \
_DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(name,type,scope) \
@@ -75,31 +107,11 @@ ssize_t string_table_lookup(const char * const *table, size_t len, const char *k
/* For string conversions where numbers are also acceptable */
#define DEFINE_STRING_TABLE_LOOKUP_WITH_FALLBACK(name,type,max) \
- int name##_to_string_alloc(type i, char **str) { \
- char *s; \
- if (i < 0 || i > max) \
- return -ERANGE; \
- if (i < (type) ELEMENTSOF(name##_table)) { \
- s = strdup(name##_table[i]); \
- if (!s) \
- return -ENOMEM; \
- } else { \
- if (asprintf(&s, "%i", i) < 0) \
- return -ENOMEM; \
- } \
- *str = s; \
- return 0; \
- } \
- type name##_from_string(const char *s) { \
- type i; \
- unsigned u = 0; \
- if (!s) \
- return (type) -1; \
- for (i = 0; i < (type) ELEMENTSOF(name##_table); i++) \
- if (streq_ptr(name##_table[i], s)) \
- return i; \
- if (safe_atou(s, &u) >= 0 && u <= max) \
- return (type) u; \
- return (type) -1; \
- } \
+ _DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,) \
+ _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,) \
struct __useless_struct_to_allow_trailing_semicolon__
+
+#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max) \
+ _DEFINE_STRING_TABLE_LOOKUP_TO_STRING_FALLBACK(name,type,max,static)
+#define DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max) \
+ _DEFINE_STRING_TABLE_LOOKUP_FROM_STRING_FALLBACK(name,type,max,static)
diff --git a/src/libsystemd/sd-netlink/local-addresses.c b/src/libsystemd/sd-netlink/local-addresses.c
index 6abd8fd0cc..ed9ee041ab 100644
--- a/src/libsystemd/sd-netlink/local-addresses.c
+++ b/src/libsystemd/sd-netlink/local-addresses.c
@@ -155,8 +155,7 @@ int local_addresses(sd_netlink *context, int ifindex, int af, struct local_addre
n_list++;
};
- if (n_list > 0)
- qsort(list, n_list, sizeof(struct local_address), address_compare);
+ qsort_safe(list, n_list, sizeof(struct local_address), address_compare);
*ret = list;
list = NULL;
diff --git a/src/nss-myhostname/nss-myhostname.c b/src/nss-myhostname/nss-myhostname.c
index 2536ad2898..2b83d127b7 100644
--- a/src/nss-myhostname/nss-myhostname.c
+++ b/src/nss-myhostname/nss-myhostname.c
@@ -127,7 +127,8 @@ enum nss_status _nss_myhostname_gethostbyname4_r(
memcpy(r_name, canonical, l+1);
idx = ALIGN(l+1);
- if (n_addresses <= 0) {
+ assert(n_addresses >= 0);
+ if (n_addresses == 0) {
/* Second, fill in IPv6 tuple */
r_tuple = (struct gaih_addrtuple*) (buffer + idx);
r_tuple->next = r_tuple_prev;
@@ -453,38 +454,33 @@ enum nss_status _nss_myhostname_gethostbyaddr2_r(
}
n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses);
- if (n_addresses > 0) {
- for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) {
- if (af != a->family)
- continue;
+ for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) {
+ if (af != a->family)
+ continue;
- if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0)
- goto found;
- }
+ if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0)
+ goto found;
}
addresses = mfree(addresses);
n_addresses = local_gateways(NULL, 0, AF_UNSPEC, &addresses);
- if (n_addresses > 0) {
- for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) {
- if (af != a->family)
- continue;
+ for (a = addresses, n = 0; (int) n < n_addresses; n++, a++) {
+ if (af != a->family)
+ continue;
- if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) {
- canonical = "gateway";
- goto found;
- }
+ if (memcmp(addr, &a->address, FAMILY_ADDRESS_SIZE(af)) == 0) {
+ canonical = "gateway";
+ goto found;
}
}
*errnop = ENOENT;
*h_errnop = HOST_NOT_FOUND;
-
return NSS_STATUS_NOTFOUND;
found:
- if (!canonical || (!additional && additional_from_hostname)) {
+ if (!canonical || additional_from_hostname) {
hn = gethostname_malloc();
if (!hn) {
*errnop = ENOMEM;
@@ -494,8 +490,7 @@ found:
if (!canonical)
canonical = hn;
-
- if (!additional && additional_from_hostname)
+ else
additional = hn;
}
diff --git a/src/nss-resolve/nss-resolve.c b/src/nss-resolve/nss-resolve.c
index 0de6bd2241..5ce10f1cbd 100644
--- a/src/nss-resolve/nss-resolve.c
+++ b/src/nss-resolve/nss-resolve.c
@@ -117,13 +117,6 @@ enum nss_status _nss_resolve_gethostbyname4_r(
int *errnop, int *h_errnop,
int32_t *ttlp) {
- enum nss_status (*fallback)(
- const char *name,
- struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
- int *errnop, int *h_errnop,
- int32_t *ttlp);
-
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
struct gaih_addrtuple *r_tuple, *r_tuple_first = NULL;
@@ -275,15 +268,15 @@ enum nss_status _nss_resolve_gethostbyname4_r(
return NSS_STATUS_SUCCESS;
fallback:
- fallback = (enum nss_status (*)(const char *name,
- struct gaih_addrtuple **pat,
- char *buffer, size_t buflen,
- int *errnop, int *h_errnop,
- int32_t *ttlp))
- find_fallback("libnss_dns.so.2", "_nss_dns_gethostbyname4_r");
+ {
+ _nss_gethostbyname4_r_t fallback;
- if (fallback)
- return fallback(name, pat, buffer, buflen, errnop, h_errnop, ttlp);
+ fallback = (_nss_gethostbyname4_r_t)
+ find_fallback("libnss_dns.so.2", "_nss_dns_gethostbyname4_r");
+
+ if (fallback)
+ return fallback(name, pat, buffer, buflen, errnop, h_errnop, ttlp);
+ }
fail:
*errnop = -r;
@@ -300,15 +293,6 @@ enum nss_status _nss_resolve_gethostbyname3_r(
int32_t *ttlp,
char **canonp) {
- enum nss_status (*fallback)(
- const char *name,
- int af,
- struct hostent *result,
- char *buffer, size_t buflen,
- int *errnop, int *h_errnop,
- int32_t *ttlp,
- char **canonp);
-
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char *r_name, *r_aliases, *r_addr, *r_addr_list;
@@ -480,16 +464,14 @@ enum nss_status _nss_resolve_gethostbyname3_r(
return NSS_STATUS_SUCCESS;
fallback:
- fallback = (enum nss_status (*)(const char *name,
- int af,
- struct hostent *result,
- char *buffer, size_t buflen,
- int *errnop, int *h_errnop,
- int32_t *ttlp,
- char **canonp))
- find_fallback("libnss_dns.so.2", "_nss_dns_gethostbyname3_r");
- if (fallback)
- return fallback(name, af, result, buffer, buflen, errnop, h_errnop, ttlp, canonp);
+ {
+ _nss_gethostbyname3_r_t fallback;
+
+ fallback = (_nss_gethostbyname3_r_t)
+ find_fallback("libnss_dns.so.2", "_nss_dns_gethostbyname3_r");
+ if (fallback)
+ return fallback(name, af, result, buffer, buflen, errnop, h_errnop, ttlp, canonp);
+ }
fail:
*errnop = -r;
@@ -505,15 +487,6 @@ enum nss_status _nss_resolve_gethostbyaddr2_r(
int *errnop, int *h_errnop,
int32_t *ttlp) {
- enum nss_status (*fallback)(
- const void* addr, socklen_t len,
- int af,
- struct hostent *result,
- char *buffer, size_t buflen,
- int *errnop, int *h_errnop,
- int32_t *ttlp);
-
-
_cleanup_(sd_bus_message_unrefp) sd_bus_message *req = NULL, *reply = NULL;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
char *r_name, *r_aliases, *r_addr, *r_addr_list;
@@ -682,17 +655,15 @@ enum nss_status _nss_resolve_gethostbyaddr2_r(
return NSS_STATUS_SUCCESS;
fallback:
- fallback = (enum nss_status (*)(
- const void* addr, socklen_t len,
- int af,
- struct hostent *result,
- char *buffer, size_t buflen,
- int *errnop, int *h_errnop,
- int32_t *ttlp))
- find_fallback("libnss_dns.so.2", "_nss_dns_gethostbyaddr2_r");
+ {
+ _nss_gethostbyaddr2_r_t fallback;
- if (fallback)
- return fallback(addr, len, af, result, buffer, buflen, errnop, h_errnop, ttlp);
+ fallback = (_nss_gethostbyaddr2_r_t)
+ find_fallback("libnss_dns.so.2", "_nss_dns_gethostbyaddr2_r");
+
+ if (fallback)
+ return fallback(addr, len, af, result, buffer, buflen, errnop, h_errnop, ttlp);
+ }
fail:
*errnop = -r;
diff --git a/src/test/test-nss.c b/src/test/test-nss.c
new file mode 100644
index 0000000000..9c13288d2e
--- /dev/null
+++ b/src/test/test-nss.c
@@ -0,0 +1,448 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2016 Zbigniew Jędrzejewski-Szmek
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see .
+***/
+
+#include
+#include
+#include
+
+#include "log.h"
+#include "nss-util.h"
+#include "path-util.h"
+#include "string-util.h"
+#include "alloc-util.h"
+#include "in-addr-util.h"
+#include "hexdecoct.h"
+#include "af-list.h"
+#include "stdio-util.h"
+#include "strv.h"
+#include "errno-list.h"
+#include "hostname-util.h"
+#include "local-addresses.h"
+
+static const char* nss_status_to_string(enum nss_status status, char *buf, size_t buf_len) {
+ switch (status) {
+ case NSS_STATUS_TRYAGAIN:
+ return "NSS_STATUS_TRYAGAIN";
+ case NSS_STATUS_UNAVAIL:
+ return "NSS_STATUS_UNAVAIL";
+ case NSS_STATUS_NOTFOUND:
+ return "NSS_STATUS_NOTFOUND";
+ case NSS_STATUS_SUCCESS:
+ return "NSS_STATUS_SUCCESS";
+ case NSS_STATUS_RETURN:
+ return "NSS_STATUS_RETURN";
+ default:
+ snprintf(buf, buf_len, "%i", status);
+ return buf;
+ }
+};
+
+static const char* af_to_string(int family, char *buf, size_t buf_len) {
+ const char *name;
+
+ if (family == AF_UNSPEC)
+ return "*";
+
+ name = af_to_name(family);
+ if (name)
+ return name;
+
+ snprintf(buf, buf_len, "%i", family);
+ return buf;
+}
+
+static void* open_handle(const char* dir, const char* module, int flags) {
+ const char *path;
+ void *handle;
+
+ if (dir)
+ path = strjoina(dir, "/.libs/libnss_", module, ".so.2");
+ else
+ path = strjoina("libnss_", module, ".so.2");
+
+ handle = dlopen(path, flags);
+ assert_se(handle);
+ return handle;
+}
+
+static int print_gaih_addrtuples(const struct gaih_addrtuple *tuples) {
+ const struct gaih_addrtuple *it;
+ int n = 0;
+
+ for (it = tuples; it; it = it->next) {
+ _cleanup_free_ char *a = NULL;
+ union in_addr_union u;
+ int r;
+ char family_name[DECIMAL_STR_MAX(int)];
+ char ifname[IF_NAMESIZE];
+
+ memcpy(&u, it->addr, 16);
+ r = in_addr_to_string(it->family, &u, &a);
+ assert_se(r == 0 || r == -EAFNOSUPPORT);
+ if (r == -EAFNOSUPPORT)
+ assert_se((a = hexmem(it->addr, 16)));
+
+ if (it->scopeid == 0)
+ goto numerical_index;
+
+ if (if_indextoname(it->scopeid, ifname) == NULL) {
+ log_warning("if_indextoname(%d) failed: %m", it->scopeid);
+ numerical_index:
+ xsprintf(ifname, "%i", it->scopeid);
+ };
+
+ log_info(" \"%s\" %s %s %%%s",
+ it->name,
+ af_to_string(it->family, family_name, sizeof family_name),
+ a,
+ ifname);
+ n ++;
+ }
+ return n;
+}
+
+static void print_struct_hostent(struct hostent *host, const char *canon) {
+ char **s;
+
+ log_info(" \"%s\"", host->h_name);
+ STRV_FOREACH(s, host->h_aliases)
+ log_info(" alias \"%s\"", *s);
+ STRV_FOREACH(s, host->h_addr_list) {
+ union in_addr_union u;
+ _cleanup_free_ char *a = NULL;
+ char family_name[DECIMAL_STR_MAX(int)];
+ int r;
+
+ assert_se((unsigned) host->h_length == FAMILY_ADDRESS_SIZE(host->h_addrtype));
+ memcpy(&u, *s, host->h_length);
+ r = in_addr_to_string(host->h_addrtype, &u, &a);
+ assert_se(r == 0);
+ log_info(" %s %s",
+ af_to_string(host->h_addrtype, family_name, sizeof family_name),
+ a);
+ }
+ if (canon)
+ log_info(" canonical: \"%s\"", canon);
+}
+
+static void test_gethostbyname4_r(void *handle, const char *module, const char *name) {
+ const char *fname;
+ _nss_gethostbyname4_r_t f;
+ char buffer[2000];
+ struct gaih_addrtuple *pat = NULL;
+ int errno1 = 999, errno2 = 999; /* nss-dns doesn't set those */
+ int32_t ttl = INT32_MAX; /* nss-dns wants to return the lowest ttl,
+ and will access this variable through *ttlp,
+ so we need to set it to something.
+ I'm not sure if this is a bug in nss-dns
+ or not. */
+ enum nss_status status;
+ char pretty_status[DECIMAL_STR_MAX(enum nss_status)];
+ int n;
+
+ fname = strjoina("_nss_", module, "_gethostbyname4_r");
+ f = dlsym(handle, fname);
+ log_debug("dlsym(0x%p, %s) → 0x%p", handle, fname, f);
+ assert_se(f);
+
+ status = f(name, &pat, buffer, sizeof buffer, &errno1, &errno2, &ttl);
+ if (status == NSS_STATUS_SUCCESS) {
+ log_info("%s(\"%s\") → status=%s%-20spat=buffer+0x%tx errno=%d/%s h_errno=%d/%s ttl=%"PRIi32,
+ fname, name,
+ nss_status_to_string(status, pretty_status, sizeof pretty_status), "\n",
+ pat ? (char*) pat - buffer : 0,
+ errno1, errno_to_name(errno1) ?: "---",
+ errno2, hstrerror(errno2),
+ ttl);
+ n = print_gaih_addrtuples(pat);
+ } else {
+ log_info("%s(\"%s\") → status=%s%-20spat=0x%p errno=%d/%s h_errno=%d/%s",
+ fname, name,
+ nss_status_to_string(status, pretty_status, sizeof pretty_status), "\n",
+ pat,
+ errno1, errno_to_name(errno1) ?: "---",
+ errno2, hstrerror(errno2));
+ n = 0;
+ }
+
+ if (STR_IN_SET(module, "resolve", "mymachines") && status == NSS_STATUS_UNAVAIL)
+ return;
+
+ if (STR_IN_SET(module, "myhostname", "resolve") && streq(name, "localhost")) {
+ assert_se(status == NSS_STATUS_SUCCESS);
+ assert_se(n == 2);
+ }
+}
+
+
+static void test_gethostbyname3_r(void *handle, const char *module, const char *name, int af) {
+ const char *fname;
+ _nss_gethostbyname3_r_t f;
+ char buffer[2000];
+ int errno1 = 999, errno2 = 999; /* nss-dns doesn't set those */
+ int32_t ttl = INT32_MAX; /* nss-dns wants to return the lowest ttl,
+ and will access this variable through *ttlp,
+ so we need to set it to something.
+ I'm not sure if this is a bug in nss-dns
+ or not. */
+ enum nss_status status;
+ char pretty_status[DECIMAL_STR_MAX(enum nss_status)];
+ struct hostent host;
+ char *canon;
+ char family_name[DECIMAL_STR_MAX(int)];
+
+ fname = strjoina("_nss_", module, "_gethostbyname3_r");
+ f = dlsym(handle, fname);
+ log_debug("dlsym(0x%p, %s) → 0x%p", handle, fname, f);
+ assert_se(f);
+
+ status = f(name, af, &host, buffer, sizeof buffer, &errno1, &errno2, &ttl, &canon);
+ log_info("%s(\"%s\", %s) → status=%s%-20serrno=%d/%s h_errno=%d/%s ttl=%"PRIi32,
+ fname, name, af_to_string(af, family_name, sizeof family_name),
+ nss_status_to_string(status, pretty_status, sizeof pretty_status), "\n",
+ errno1, errno_to_name(errno1) ?: "---",
+ errno2, hstrerror(errno2),
+ ttl);
+ if (status == NSS_STATUS_SUCCESS)
+ print_struct_hostent(&host, canon);
+}
+
+static void test_gethostbyname2_r(void *handle, const char *module, const char *name, int af) {
+ const char *fname;
+ _nss_gethostbyname2_r_t f;
+ char buffer[2000];
+ int errno1 = 999, errno2 = 999; /* nss-dns doesn't set those */
+ enum nss_status status;
+ char pretty_status[DECIMAL_STR_MAX(enum nss_status)];
+ struct hostent host;
+ char family_name[DECIMAL_STR_MAX(int)];
+
+ fname = strjoina("_nss_", module, "_gethostbyname2_r");
+ f = dlsym(handle, fname);
+ log_debug("dlsym(0x%p, %s) → 0x%p", handle, fname, f);
+ assert_se(f);
+
+ status = f(name, af, &host, buffer, sizeof buffer, &errno1, &errno2);
+ log_info("%s(\"%s\", %s) → status=%s%-20serrno=%d/%s h_errno=%d/%s",
+ fname, name, af_to_string(af, family_name, sizeof family_name),
+ nss_status_to_string(status, pretty_status, sizeof pretty_status), "\n",
+ errno1, errno_to_name(errno1) ?: "---",
+ errno2, hstrerror(errno2));
+ if (status == NSS_STATUS_SUCCESS)
+ print_struct_hostent(&host, NULL);
+}
+
+static void test_gethostbyname_r(void *handle, const char *module, const char *name) {
+ const char *fname;
+ _nss_gethostbyname_r_t f;
+ char buffer[2000];
+ int errno1 = 999, errno2 = 999; /* nss-dns doesn't set those */
+ enum nss_status status;
+ char pretty_status[DECIMAL_STR_MAX(enum nss_status)];
+ struct hostent host;
+
+ fname = strjoina("_nss_", module, "_gethostbyname_r");
+ f = dlsym(handle, fname);
+ log_debug("dlsym(0x%p, %s) → 0x%p", handle, fname, f);
+ assert_se(f);
+
+ status = f(name, &host, buffer, sizeof buffer, &errno1, &errno2);
+ log_info("%s(\"%s\") → status=%s%-20serrno=%d/%s h_errno=%d/%s",
+ fname, name,
+ nss_status_to_string(status, pretty_status, sizeof pretty_status), "\n",
+ errno1, errno_to_name(errno1) ?: "---",
+ errno2, hstrerror(errno2));
+ if (status == NSS_STATUS_SUCCESS)
+ print_struct_hostent(&host, NULL);
+}
+
+static void test_gethostbyaddr2_r(void *handle,
+ const char *module,
+ const void* addr, socklen_t len,
+ int af) {
+
+ const char *fname;
+ _nss_gethostbyaddr2_r_t f;
+ char buffer[2000];
+ int errno1 = 999, errno2 = 999; /* nss-dns doesn't set those */
+ enum nss_status status;
+ char pretty_status[DECIMAL_STR_MAX(enum nss_status)];
+ struct hostent host;
+ int32_t ttl = INT32_MAX;
+ _cleanup_free_ char *addr_pretty = NULL;
+
+ fname = strjoina("_nss_", module, "_gethostbyaddr2_r");
+ f = dlsym(handle, fname);
+
+ log_full_errno(f ? LOG_DEBUG : LOG_INFO, errno,
+ "dlsym(0x%p, %s) → 0x%p: %m", handle, fname, f);
+ if (!f)
+ return;
+
+ assert_se(in_addr_to_string(af, addr, &addr_pretty) >= 0);
+
+ status = f(addr, len, af, &host, buffer, sizeof buffer, &errno1, &errno2, &ttl);
+ log_info("%s(\"%s\") → status=%s%-20serrno=%d/%s h_errno=%d/%s ttl=%"PRIi32,
+ fname, addr_pretty,
+ nss_status_to_string(status, pretty_status, sizeof pretty_status), "\n",
+ errno1, errno_to_name(errno1) ?: "---",
+ errno2, hstrerror(errno2),
+ ttl);
+ if (status == NSS_STATUS_SUCCESS)
+ print_struct_hostent(&host, NULL);
+}
+
+static void test_gethostbyaddr_r(void *handle,
+ const char *module,
+ const void* addr, socklen_t len,
+ int af) {
+
+ const char *fname;
+ _nss_gethostbyaddr_r_t f;
+ char buffer[2000];
+ int errno1 = 999, errno2 = 999; /* nss-dns doesn't set those */
+ enum nss_status status;
+ char pretty_status[DECIMAL_STR_MAX(enum nss_status)];
+ struct hostent host;
+ _cleanup_free_ char *addr_pretty = NULL;
+
+ fname = strjoina("_nss_", module, "_gethostbyaddr_r");
+ f = dlsym(handle, fname);
+
+ log_full_errno(f ? LOG_DEBUG : LOG_INFO, errno,
+ "dlsym(0x%p, %s) → 0x%p: %m", handle, fname, f);
+ if (!f)
+ return;
+
+ assert_se(in_addr_to_string(af, addr, &addr_pretty) >= 0);
+
+ status = f(addr, len, af, &host, buffer, sizeof buffer, &errno1, &errno2);
+ log_info("%s(\"%s\") → status=%s%-20serrno=%d/%s h_errno=%d/%s",
+ fname, addr_pretty,
+ nss_status_to_string(status, pretty_status, sizeof pretty_status), "\n",
+ errno1, errno_to_name(errno1) ?: "---",
+ errno2, hstrerror(errno2));
+ if (status == NSS_STATUS_SUCCESS)
+ print_struct_hostent(&host, NULL);
+}
+
+static void test_byname(void *handle, const char *module, const char *name) {
+ test_gethostbyname4_r(handle, module, name);
+ puts("");
+
+ test_gethostbyname3_r(handle, module, name, AF_INET);
+ puts("");
+ test_gethostbyname3_r(handle, module, name, AF_INET6);
+ puts("");
+ test_gethostbyname3_r(handle, module, name, AF_UNSPEC);
+ puts("");
+ test_gethostbyname3_r(handle, module, name, AF_LOCAL);
+ puts("");
+
+ test_gethostbyname2_r(handle, module, name, AF_INET);
+ puts("");
+ test_gethostbyname2_r(handle, module, name, AF_INET6);
+ puts("");
+ test_gethostbyname2_r(handle, module, name, AF_UNSPEC);
+ puts("");
+ test_gethostbyname2_r(handle, module, name, AF_LOCAL);
+ puts("");
+
+ test_gethostbyname_r(handle, module, name);
+ puts("");
+}
+
+static void test_byaddr(void *handle,
+ const char *module,
+ const void* addr, socklen_t len,
+ int af) {
+ test_gethostbyaddr2_r(handle, module, addr, len, af);
+ puts("");
+
+ test_gethostbyaddr_r(handle, module, addr, len, af);
+ puts("");
+}
+
+#ifdef HAVE_MYHOSTNAME
+# define MODULE1 "myhostname\0"
+#endif
+#ifdef HAVE_RESOLVED
+# define MODULE2 "resolve\0"
+#endif
+#ifdef HAVE_MACHINED
+# define MODULE3 "mymachines\0"
+#endif
+#define MODULE4 "dns\0"
+
+int main(int argc, char **argv) {
+ _cleanup_free_ char *dir = NULL, *hostname = NULL;
+ const char *module;
+
+ const uint32_t local_address_ipv4 = htonl(0x7F000001);
+ const uint32_t local_address_ipv4_2 = htonl(0x7F000002);
+ _cleanup_free_ struct local_address *addresses = NULL;
+ int n_addresses;
+
+ log_set_max_level(LOG_INFO);
+ log_parse_environment();
+
+ dir = dirname_malloc(argv[0]);
+ assert_se(dir);
+
+ hostname = gethostname_malloc();
+ assert_se(hostname);
+
+ n_addresses = local_addresses(NULL, 0, AF_UNSPEC, &addresses);
+ if (n_addresses < 0) {
+ log_info_errno(n_addresses, "Failed to query local addresses: %m");
+ n_addresses = 0;
+ }
+
+ NULSTR_FOREACH(module, MODULE1 MODULE2 MODULE3 MODULE4) {
+ void *handle;
+ const char *name;
+ int i;
+
+ log_info("======== %s ========", module);
+
+ handle = open_handle(streq(module, "dns") ? NULL : dir,
+ module,
+ RTLD_LAZY|RTLD_NODELETE);
+ NULSTR_FOREACH(name, "localhost\0" "gateway\0" "foo_no_such_host\0")
+ test_byname(handle, module, name);
+
+ test_byname(handle, module, hostname);
+
+ test_byaddr(handle, module, &local_address_ipv4, sizeof local_address_ipv4, AF_INET);
+ test_byaddr(handle, module, &local_address_ipv4_2, sizeof local_address_ipv4_2, AF_INET);
+ test_byaddr(handle, module, &in6addr_loopback, sizeof in6addr_loopback, AF_INET6);
+
+ for (i = 0; i < n_addresses; i++)
+ test_byaddr(handle, module,
+ &addresses[i].address,
+ FAMILY_ADDRESS_SIZE(addresses[i].family),
+ addresses[i].family);
+
+ dlclose(handle);
+
+ log_info(" ");
+ }
+
+ return EXIT_SUCCESS;
+}