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/*
* Copyright (c) 2014 Gilles Chehade <gilles@poolp.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "compat.h"
#include <sys/tree.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "dict.h"
#include "log.h"
#include "table_stdio.h"
#define REPLYBUFFERSIZE 100000
static char *config;
static int sock = -1;
static int connected;
static FILE *sockstream;
static char repbuffer[REPLYBUFFERSIZE+1];
enum socketmap_reply{
SM_OK = 0,
SM_NOTFOUND,
SM_TEMP,
SM_TIMEOUT,
SM_PERM,
};
static int
table_socketmap_connect(const char *s)
{
struct sockaddr_un sun;
if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
log_warn("warn: socket");
goto err;
}
memset(&sun, 0, sizeof sun);
sun.sun_family = AF_UNIX;
if (strlcpy(sun.sun_path, s, sizeof(sun.sun_path)) >=
sizeof(sun.sun_path)) {
log_warnx("warn: socket path too long");
goto err;
}
if (connect(sock, (struct sockaddr *)&sun, sizeof(sun)) == -1) {
log_warn("warn: connect");
goto err;
}
if ((sockstream = fdopen(sock, "w+")) == NULL) {
log_warn("warn: fdopen");
goto err;
}
connected = 1;
return 1;
err:
if (sock == -1) {
close(sock);
sock = -1;
}
return 0;
}
static enum socketmap_reply
table_socketmap_query(const char *name, const char *key)
{
char *buf = NULL;
size_t sz = 0;
ssize_t len;
int ret = SM_PERM;
if (!connected) {
if (!table_socketmap_connect(config)) {
log_warnx("error connecting to %s", config);
return ret;
}
}
memset(repbuffer, 0, sizeof repbuffer);
fprintf(sockstream, "%s %s\n", name, key);
fflush(sockstream);
if ((len = getline(&buf, &sz, sockstream)) == -1) {
log_warnx("warn: socketmap has lost its socket");
(void)strlcpy(repbuffer, "lost connection to socket", sizeof repbuffer);
ret = SM_PERM;
goto err;
}
if (buf[len - 1] == '\n')
buf[len - 1] = '\0';
if (strlcpy(repbuffer, buf, sizeof repbuffer) >= sizeof repbuffer) {
log_warnx("warn: socketmap reply too large (>%zu bytes)",
sizeof repbuffer);
(void)strlcpy(repbuffer, "socketmap reply too large", sizeof repbuffer);
ret = SM_PERM;
goto err;
}
if (strncasecmp(repbuffer, "OK ", 3) == 0) {
ret = SM_OK;
memmove(repbuffer, repbuffer+3, strlen(repbuffer)-2);
}
else if (strncasecmp(repbuffer, "NOTFOUND ", 9) == 0) {
ret = SM_NOTFOUND;
memmove(repbuffer, repbuffer+9, strlen(repbuffer)-8);
}
else if (strncasecmp(repbuffer, "TEMP ", 5) == 0) {
ret = SM_TEMP;
memmove(repbuffer, repbuffer+5, strlen(repbuffer)-4);
}
else if (strncasecmp(repbuffer, "TIMEOUT ", 8) == 0) {
ret = SM_TIMEOUT;
memmove(repbuffer, repbuffer+8, strlen(repbuffer)-7);
}
else if (strncasecmp(repbuffer, "PERM ", 5) == 0) {
ret = SM_PERM;
memmove(repbuffer, repbuffer+5, strlen(repbuffer)-4);
}
else {
ret = SM_PERM;
(void)strlcpy(repbuffer, "unrecognized socketmap reply", sizeof repbuffer);
}
err:
free(buf);
return ret;
}
static int
table_socketmap_update(void)
{
return 1;
}
static int
table_socketmap_check(int service, struct dict *params, const char *key)
{
return -1;
}
static int
table_socketmap_lookup(int service, struct dict *params, const char *key, char *dst, size_t sz)
{
int r;
enum socketmap_reply rep;
rep = table_socketmap_query(table_api_get_name(), key);
if (rep == SM_NOTFOUND)
return 0;
if (rep != SM_OK) {
log_warnx("warn: %s", repbuffer);
return -1;
}
if (strlcpy(dst, repbuffer, sz) >= sz) {
log_warnx("warn: result too large");
return -1;
}
r = 1;
switch(service) {
case K_ALIAS:
case K_CREDENTIALS:
case K_USERINFO:
case K_DOMAIN:
case K_NETADDR:
case K_SOURCE:
case K_MAILADDR:
case K_ADDRNAME:
break;
default:
log_warnx("warn: unknown service %d", service);
r = -1;
}
return r;
}
static int
table_socketmap_fetch(int service, struct dict *params, char *key, size_t sz)
{
return -1;
}
int
main(int argc, char **argv)
{
int ch;
log_init(1);
log_setverbose(~0);
while ((ch = getopt(argc, argv, "")) != -1) {
switch (ch) {
default:
fatalx("bad option");
/* NOTREACHED */
}
}
argc -= optind;
argv += optind;
if (argc != 1)
fatalx("bogus argument(s)");
config = argv[0];
table_api_on_update(table_socketmap_update);
table_api_on_check(table_socketmap_check);
table_api_on_lookup(table_socketmap_lookup);
table_api_on_fetch(table_socketmap_fetch);
table_api_dispatch();
return 0;
}
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