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-rw-r--r--system/musl/getent.c511
1 files changed, 511 insertions, 0 deletions
diff --git a/system/musl/getent.c b/system/musl/getent.c
new file mode 100644
index 000000000..b10d75acc
--- /dev/null
+++ b/system/musl/getent.c
@@ -0,0 +1,511 @@
+/*-
+ * Copyright (c) 2004-2006 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Luke Mewburn.
+ * Timo Teräs cleaned up the code for use in Alpine Linux with musl libc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/socket.h>
+#include <sys/param.h>
+#include <ctype.h>
+#include <errno.h>
+#include <limits.h>
+#include <netdb.h>
+#include <pwd.h>
+#include <grp.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <paths.h>
+#include <err.h>
+
+#include <arpa/inet.h>
+#include <arpa/nameser.h>
+
+#include <net/if.h>
+#include <net/ethernet.h>
+#include <netinet/ether.h>
+#include <netinet/in.h>
+
+enum {
+ RV_OK = 0,
+ RV_USAGE = 1,
+ RV_NOTFOUND = 2,
+ RV_NOENUM = 3
+};
+
+static int usage(const char *);
+
+static int parsenum(const char *word, unsigned long *result)
+{
+ unsigned long num;
+ char *ep;
+
+ if (!isdigit((unsigned char)word[0]))
+ return 0;
+ errno = 0;
+ num = strtoul(word, &ep, 10);
+ if (num == ULONG_MAX && errno == ERANGE)
+ return 0;
+ if (*ep != '\0')
+ return 0;
+ *result = num;
+ return 1;
+}
+
+/*
+ * printfmtstrings --
+ * vprintf(format, ...),
+ * then the aliases (beginning with prefix, separated by sep),
+ * then a newline
+ */
+__attribute__ ((format (printf, 4, 5)))
+static void printfmtstrings(char *strings[], const char *prefix, const char *sep,
+ const char *fmt, ...)
+{
+ va_list ap;
+ const char *curpref;
+ size_t i;
+
+ va_start(ap, fmt);
+ (void)vprintf(fmt, ap);
+ va_end(ap);
+
+ curpref = prefix;
+ for (i = 0; strings[i] != NULL; i++) {
+ (void)printf("%s%s", curpref, strings[i]);
+ curpref = sep;
+ }
+ (void)printf("\n");
+}
+
+static int ethers(int argc, char *argv[])
+{
+ char hostname[MAXHOSTNAMELEN + 1], *hp;
+ struct ether_addr ea, *eap;
+ int i, rv;
+
+ if (argc == 2) {
+ warnx("Enumeration not supported on ethers");
+ return RV_NOENUM;
+ }
+
+ rv = RV_OK;
+ for (i = 2; i < argc; i++) {
+ if ((eap = ether_aton(argv[i])) == NULL) {
+ eap = &ea;
+ hp = argv[i];
+ if (ether_hostton(hp, eap) != 0) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ } else {
+ hp = hostname;
+ if (ether_ntohost(hp, eap) != 0) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ }
+ (void)printf("%-17s %s\n", ether_ntoa(eap), hp);
+ }
+ return rv;
+}
+
+static void groupprint(const struct group *gr)
+{
+ printfmtstrings(gr->gr_mem, ":", ",", "%s:%s:%u",
+ gr->gr_name, gr->gr_passwd, gr->gr_gid);
+}
+
+static int group(int argc, char *argv[])
+{
+ struct group *gr;
+ unsigned long id;
+ int i, rv;
+
+ rv = RV_OK;
+ if (argc == 2) {
+ while ((gr = getgrent()) != NULL)
+ groupprint(gr);
+ } else {
+ for (i = 2; i < argc; i++) {
+ if (parsenum(argv[i], &id))
+ gr = getgrgid((gid_t)id);
+ else
+ gr = getgrnam(argv[i]);
+ if (gr == NULL) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ groupprint(gr);
+ }
+ }
+ endgrent();
+ return rv;
+}
+
+static void hostsprint(const struct hostent *he)
+{
+ char buf[INET6_ADDRSTRLEN];
+
+ if (inet_ntop(he->h_addrtype, he->h_addr, buf, sizeof(buf)) == NULL)
+ (void)strlcpy(buf, "# unknown", sizeof(buf));
+ printfmtstrings(he->h_aliases, " ", " ", "%-16s %s", buf, he->h_name);
+}
+
+static int hosts(int argc, char *argv[])
+{
+ struct hostent *he;
+ char addr[IN6ADDRSZ];
+ int i, rv;
+
+ sethostent(1);
+ rv = RV_OK;
+ if (argc == 2) {
+ while ((he = gethostent()) != NULL)
+ hostsprint(he);
+ } else {
+ for (i = 2; i < argc; i++) {
+ if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0)
+ he = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
+ else if (inet_pton(AF_INET, argv[i], (void *)addr) > 0)
+ he = gethostbyaddr(addr, INADDRSZ, AF_INET);
+ else if ((he = gethostbyname2(argv[i], AF_INET6)) == NULL)
+ he = gethostbyname2(argv[i], AF_INET);
+ if (he == NULL) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ hostsprint(he);
+ }
+ }
+ endhostent();
+ return rv;
+}
+
+static int ahosts_ex(int family, int flags, int argc, char *argv[])
+{
+ static const char *socktypes[] = {
+ [SOCK_STREAM] = "STREAM",
+ [SOCK_DGRAM] = "DGRAM",
+ [SOCK_RAW] = "RAW",
+ [SOCK_RDM] = "RDM",
+ [SOCK_SEQPACKET] = "SEQPACKET",
+ [SOCK_DCCP] = "DCCP",
+ [SOCK_PACKET] = "PACKET",
+ };
+ const char *sockstr;
+ char sockbuf[16], buf[INET6_ADDRSTRLEN];
+ struct addrinfo *res, *r, hint;
+ void *addr;
+ int i;
+
+ if (argc == 2)
+ return hosts(argc, argv);
+
+ hint = (struct addrinfo) {
+ .ai_family = family,
+ .ai_flags = AI_ADDRCONFIG | AI_CANONNAME | flags,
+ };
+
+ for (i = 2; i < argc; i++) {
+ if (getaddrinfo(argv[i], 0, &hint, &res) != 0)
+ return RV_NOTFOUND;
+
+ for (r = res; r; r = r->ai_next) {
+ sockstr = NULL;
+ if (r->ai_socktype >= 0 && r->ai_socktype < sizeof(socktypes)/sizeof(socktypes[0]))
+ sockstr = socktypes[r->ai_socktype];
+ if (!sockstr) {
+ sprintf(buf, "%d", r->ai_socktype);
+ sockstr = sockbuf;
+ }
+ switch (r->ai_family) {
+ case AF_INET:
+ addr = &((struct sockaddr_in*) r->ai_addr)->sin_addr;
+ break;
+ case AF_INET6:
+ addr = &((struct sockaddr_in6*) r->ai_addr)->sin6_addr;
+ break;
+ default:
+ continue;
+ }
+ if (inet_ntop(r->ai_family, addr, buf, sizeof(buf)) == NULL)
+ (void)strlcpy(buf, "# unknown", sizeof(buf));
+ printf("%-15s %-6s %s\n", buf, sockstr, r->ai_canonname ?: "");
+ }
+ }
+
+ return RV_OK;
+}
+
+static int ahosts(int argc, char *argv[])
+{
+ return ahosts_ex(AF_UNSPEC, 0, argc, argv);
+}
+
+static int ahostsv4(int argc, char *argv[])
+{
+ return ahosts_ex(AF_INET, 0, argc, argv);
+}
+
+static int ahostsv6(int argc, char *argv[])
+{
+ return ahosts_ex(AF_INET6, AI_V4MAPPED, argc, argv);
+}
+
+static void networksprint(const struct netent *ne)
+{
+ char buf[INET6_ADDRSTRLEN];
+ struct in_addr ianet;
+
+ ianet = inet_makeaddr(ne->n_net, 0);
+ if (inet_ntop(ne->n_addrtype, &ianet, buf, sizeof(buf)) == NULL)
+ (void)strlcpy(buf, "# unknown", sizeof(buf));
+ printfmtstrings(ne->n_aliases, " ", " ", "%-16s %s", ne->n_name, buf);
+}
+
+static int networks(int argc, char *argv[])
+{
+ struct netent *ne;
+ in_addr_t net;
+ int i, rv;
+
+ setnetent(1);
+ rv = RV_OK;
+ if (argc == 2) {
+ while ((ne = getnetent()) != NULL)
+ networksprint(ne);
+ } else {
+ for (i = 2; i < argc; i++) {
+ net = inet_network(argv[i]);
+ if (net != INADDR_NONE)
+ ne = getnetbyaddr(net, AF_INET);
+ else
+ ne = getnetbyname(argv[i]);
+ if (ne != NULL) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ networksprint(ne);
+ }
+ }
+ endnetent();
+ return rv;
+}
+
+static void passwdprint(struct passwd *pw)
+{
+ (void)printf("%s:%s:%u:%u:%s:%s:%s\n",
+ pw->pw_name, pw->pw_passwd, pw->pw_uid,
+ pw->pw_gid, pw->pw_gecos, pw->pw_dir, pw->pw_shell);
+}
+
+static int passwd(int argc, char *argv[])
+{
+ struct passwd *pw;
+ unsigned long id;
+ int i, rv;
+
+ rv = RV_OK;
+ if (argc == 2) {
+ while ((pw = getpwent()) != NULL)
+ passwdprint(pw);
+ } else {
+ for (i = 2; i < argc; i++) {
+ if (parsenum(argv[i], &id))
+ pw = getpwuid((uid_t)id);
+ else
+ pw = getpwnam(argv[i]);
+ if (pw == NULL) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ passwdprint(pw);
+ }
+ }
+ endpwent();
+ return rv;
+}
+
+static void protocolsprint(struct protoent *pe)
+{
+ printfmtstrings(pe->p_aliases, " ", " ",
+ "%-16s %5d", pe->p_name, pe->p_proto);
+}
+
+static int protocols(int argc, char *argv[])
+{
+ struct protoent *pe;
+ unsigned long id;
+ int i, rv;
+
+ setprotoent(1);
+ rv = RV_OK;
+ if (argc == 2) {
+ while ((pe = getprotoent()) != NULL)
+ protocolsprint(pe);
+ } else {
+ for (i = 2; i < argc; i++) {
+ if (parsenum(argv[i], &id))
+ pe = getprotobynumber((int)id);
+ else
+ pe = getprotobyname(argv[i]);
+ if (pe == NULL) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ protocolsprint(pe);
+ }
+ }
+ endprotoent();
+ return rv;
+}
+
+static void servicesprint(struct servent *se)
+{
+ printfmtstrings(se->s_aliases, " ", " ",
+ "%-16s %5d/%s",
+ se->s_name, ntohs(se->s_port), se->s_proto);
+
+}
+
+static int services(int argc, char *argv[])
+{
+ struct servent *se;
+ unsigned long id;
+ char *proto;
+ int i, rv;
+
+ setservent(1);
+ rv = RV_OK;
+ if (argc == 2) {
+ while ((se = getservent()) != NULL)
+ servicesprint(se);
+ } else {
+ for (i = 2; i < argc; i++) {
+ proto = strchr(argv[i], '/');
+ if (proto != NULL)
+ *proto++ = '\0';
+ if (parsenum(argv[i], &id))
+ se = getservbyport(htons(id), proto);
+ else
+ se = getservbyname(argv[i], proto);
+ if (se == NULL) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ servicesprint(se);
+ }
+ }
+ endservent();
+ return rv;
+}
+
+static int shells(int argc, char *argv[])
+{
+ const char *sh;
+ int i, rv;
+
+ setusershell();
+ rv = RV_OK;
+ if (argc == 2) {
+ while ((sh = getusershell()) != NULL)
+ (void)printf("%s\n", sh);
+ } else {
+ for (i = 2; i < argc; i++) {
+ setusershell();
+ while ((sh = getusershell()) != NULL) {
+ if (strcmp(sh, argv[i]) == 0) {
+ (void)printf("%s\n", sh);
+ break;
+ }
+ }
+ if (sh == NULL) {
+ rv = RV_NOTFOUND;
+ break;
+ }
+ }
+ }
+ endusershell();
+ return rv;
+}
+
+static struct getentdb {
+ const char *name;
+ int (*callback)(int, char *[]);
+} databases[] = {
+ { "ethers", ethers, },
+ { "group", group, },
+ { "hosts", hosts, },
+ { "ahosts", ahosts, },
+ { "ahostsv4", ahostsv4, },
+ { "ahostsv6", ahostsv6, },
+ { "networks", networks, },
+ { "passwd", passwd, },
+ { "protocols", protocols, },
+ { "services", services, },
+ { "shells", shells, },
+
+ { NULL, NULL, },
+};
+
+static int usage(const char *arg0)
+{
+ struct getentdb *curdb;
+ size_t i;
+
+ (void)fprintf(stderr, "Usage: %s database [key ...]\n", arg0);
+ (void)fprintf(stderr, "\tdatabase may be one of:");
+ for (i = 0, curdb = databases; curdb->name != NULL; curdb++, i++) {
+ if (i % 7 == 0)
+ (void)fputs("\n\t\t", stderr);
+ (void)fprintf(stderr, "%s%s", i % 7 == 0 ? "" : " ",
+ curdb->name);
+ }
+ (void)fprintf(stderr, "\n");
+ exit(RV_USAGE);
+ /* NOTREACHED */
+}
+
+int
+main(int argc, char *argv[])
+{
+ struct getentdb *curdb;
+
+ if (argc < 2)
+ usage(argv[0]);
+ for (curdb = databases; curdb->name != NULL; curdb++)
+ if (strcmp(curdb->name, argv[1]) == 0)
+ return (*curdb->callback)(argc, argv);
+
+ warn("Unknown database `%s'", argv[1]);
+ usage(argv[0]);
+ /* NOTREACHED */
+}
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