diff options
Diffstat (limited to 'nss/tst-reload1.c')
| -rw-r--r-- | nss/tst-reload1.c | 341 |
1 files changed, 341 insertions, 0 deletions
diff --git a/nss/tst-reload1.c b/nss/tst-reload1.c new file mode 100644 index 0000000000..449874dfbf --- /dev/null +++ b/nss/tst-reload1.c @@ -0,0 +1,341 @@ +/* Test that nsswitch.conf reloading actually works. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library 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. + + The GNU C Library 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 the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <nss.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <errno.h> +#include <pwd.h> + +#include <support/support.h> +#include <support/check.h> + +#include "nss_test.h" + +/* Size of buffers used by *_r functions. */ +#define TESTBUFLEN 4096 + +static struct passwd pwd_table_1[] = { + PWD (100), + PWD (30), + PWD (200), + PWD (60), + PWD (20000), + PWD_LAST () + }; + +static const char *hostaddr_5[] = + { + "ABCD", "abcd", "1234", NULL + }; + +static const char *hostaddr_15[] = + { + "4321", "ghij", NULL + }; + +static const char *hostaddr_25[] = + { + "WXYZ", NULL + }; + + +static struct hostent host_table_1[] = { + HOST (5), + HOST (15), + HOST (25), + HOST_LAST () +}; + +void +_nss_test1_init_hook(test_tables *t) +{ + t->pwd_table = pwd_table_1; + t->host_table = host_table_1; +} + +/* The first of these must not appear in pwd_table_1. */ +static struct passwd pwd_table_2[] = { + PWD (5), + PWD_N(200, "name30"), + PWD (16), + PWD_LAST () + }; + +static const char *hostaddr_6[] = + { + "mnop", NULL + }; + +static const char *hostaddr_16[] = + { + "7890", "a1b2", NULL + }; + +static const char *hostaddr_26[] = + { + "qwer", "tyui", NULL + }; + +static struct hostent host_table_2[] = { + HOST (6), + HOST (16), + HOST (26), + HOST_LAST () +}; + +void +_nss_test2_init_hook(test_tables *t) +{ + t->pwd_table = pwd_table_2; + t->host_table = host_table_2; +} + +static void +must_be_tests (struct passwd *pt, struct hostent *ht) +{ + int i; + struct hostent *h; + + struct passwd *p; + for (i = 0; !PWD_ISLAST (&pt[i]); ++i) + { + p = getpwuid (pt[i].pw_uid); + TEST_VERIFY (p != NULL); + if (p != NULL) + { + TEST_VERIFY (strcmp (p->pw_name, pt[i].pw_name) == 0); + } + } + + setpwent (); + for (i = 0; !PWD_ISLAST (&pt[i]); ++i) + { + p = getpwent (); + TEST_VERIFY (p != NULL); + if (p != NULL) + { + TEST_VERIFY (strcmp (p->pw_name, pt[i].pw_name) == 0); + TEST_VERIFY (p->pw_uid == pt[i].pw_uid); + } + } + endpwent (); + + for (i = 0; !HOST_ISLAST (&ht[i]); ++i) + { + h = gethostbyname (ht[i].h_name); + TEST_VERIFY (h != NULL); + if (h != NULL) + { + TEST_VERIFY (strcmp (h->h_name, ht[i].h_name) == 0); + TEST_VERIFY (h->h_addr_list[0] != NULL); + if (h->h_addr_list[0]) + TEST_VERIFY (strcmp (h->h_addr_list[0], ht[i].h_addr_list[0]) == 0); + } + } + + for (i = 0; !HOST_ISLAST (&ht[i]); ++i) + { + struct hostent r, *rp; + char buf[TESTBUFLEN]; + int herrno, res; + + res = gethostbyname2_r (ht[i].h_name, AF_INET, + &r, buf, TESTBUFLEN, &rp, &herrno); + TEST_VERIFY (res == 0); + if (res == 0) + { + TEST_VERIFY (strcmp (r.h_name, ht[i].h_name) == 0); + TEST_VERIFY (r.h_addr_list[0] != NULL); + if (r.h_addr_list[0]) + TEST_VERIFY (strcmp (r.h_addr_list[0], ht[i].h_addr_list[0]) == 0); + } + } + + for (i = 0; !HOST_ISLAST (&ht[i]); ++i) + { + h = gethostbyaddr (ht[i].h_addr, 4, AF_INET); + TEST_VERIFY (h != NULL); + if (h != NULL) + { + TEST_VERIFY (strcmp (h->h_name, ht[i].h_name) == 0); + TEST_VERIFY (h->h_addr_list[0] != NULL); + if (h->h_addr_list[0]) + TEST_VERIFY (strcmp (h->h_addr_list[0], ht[i].h_addr_list[0]) == 0); + } + } + + /* getaddrinfo */ + + for (i = 0; !HOST_ISLAST (&ht[i]); ++i) + { + struct addrinfo *ap; + struct addrinfo hint; + int res, j; + + memset (&hint, 0, sizeof (hint)); + hint.ai_family = AF_INET; + hint.ai_socktype = SOCK_STREAM; + hint.ai_protocol = 0; + hint.ai_flags = 0; + + ap = NULL; + res = getaddrinfo (ht[i].h_name, NULL, &hint, &ap); + TEST_VERIFY (res == 0); + TEST_VERIFY (ap != NULL); + if (res == 0 && ap != NULL) + { + j = 0; /* which address in the list */ + while (ap) + { + struct sockaddr_in *in = (struct sockaddr_in *)ap->ai_addr; + unsigned char *up = (unsigned char *)&in->sin_addr; + + TEST_VERIFY (memcmp (up, ht[i].h_addr_list[j], 4) == 0); + + ap = ap->ai_next; + ++j; + } + } + } + + /* getnameinfo */ + + for (i = 0; !HOST_ISLAST (&ht[i]); ++i) + { + struct sockaddr_in addr; + int res; + char host_buf[NI_MAXHOST]; + + memset (&addr, 0, sizeof (addr)); + addr.sin_family = AF_INET; + addr.sin_port = 80; + memcpy (& addr.sin_addr, ht[i].h_addr_list[0], 4); + + res = getnameinfo ((struct sockaddr *) &addr, sizeof(addr), + host_buf, sizeof(host_buf), + NULL, 0, NI_NOFQDN); + + TEST_VERIFY (res == 0); + if (res == 0) + TEST_VERIFY (strcmp (ht[i].h_name, host_buf) == 0); + else + printf ("error %s\n", gai_strerror (res)); + } +} + +static void +must_be_1 (void) +{ + struct passwd *p; + + must_be_tests (pwd_table_1, host_table_1); + p = getpwnam("name5"); + TEST_VERIFY (p == NULL); +} + +static void +must_be_2 (void) +{ + struct passwd *p; + + must_be_tests (pwd_table_2, host_table_2); + p = getpwnam("name100"); + TEST_VERIFY (p == NULL); +} + +static void +xrename (const char *a, const char *b) +{ + int i = rename (a, b); + if (i != 0) + FAIL_EXIT1 ("rename(%s,%s) failed: %s\n", a, b, strerror(errno)); +} + +/* If the actions change while in the midst of doing a series of + lookups, make sure they're consistent. */ +static void +test_cross_switch_consistency (void) +{ + int i; + struct passwd *p; + + /* We start by initiating a set/get/end loop on conf1. */ + setpwent (); + for (i = 0; !PWD_ISLAST (&pwd_table_1[i]); ++i) + { + p = getpwent (); + TEST_VERIFY (p != NULL); + if (p != NULL) + { + TEST_VERIFY (strcmp (p->pw_name, pwd_table_1[i].pw_name) == 0); + TEST_VERIFY (p->pw_uid == pwd_table_1[i].pw_uid); + } + + /* After the first lookup, switch to conf2 and verify */ + if (i == 0) + { + xrename ("/etc/nsswitch.conf", "/etc/nsswitch.conf1"); + xrename ("/etc/nsswitch.conf2", "/etc/nsswitch.conf"); + + p = getpwnam (pwd_table_2[0].pw_name); + TEST_VERIFY (p->pw_uid == pwd_table_2[0].pw_uid); + } + + /* But the original loop should still be on conf1. */ + } + endpwent (); + + /* Make sure the set/get/end loop sees conf2 now. */ + setpwent (); + for (i = 0; !PWD_ISLAST (&pwd_table_2[i]); ++i) + { + p = getpwent (); + TEST_VERIFY (p != NULL); + if (p != NULL) + { + TEST_VERIFY (strcmp (p->pw_name, pwd_table_2[i].pw_name) == 0); + TEST_VERIFY (p->pw_uid == pwd_table_2[i].pw_uid); + } + } + endpwent (); + +} + +static int +do_test (void) +{ + /* The test1 module was configured at program start. */ + must_be_1 (); + + xrename ("/etc/nsswitch.conf", "/etc/nsswitch.conf1"); + xrename ("/etc/nsswitch.conf2", "/etc/nsswitch.conf"); + must_be_2 (); + + xrename ("/etc/nsswitch.conf", "/etc/nsswitch.conf2"); + xrename ("/etc/nsswitch.conf1", "/etc/nsswitch.conf"); + must_be_1 (); + + test_cross_switch_consistency (); + + return 0; +} + +#include <support/test-driver.c> |