doveadm-who.c revision bde78a7bf5f9000f1ae4dc7ce6cabd012e1f8b79
/* Copyright (c) 2009-2010 Dovecot authors, see the included COPYING file */
#include "lib.h"
#include "array.h"
#include "network.h"
#include "istream.h"
#include "wildcard-match.h"
#include "hash.h"
#include "str.h"
#include "doveadm.h"
#include "doveadm-print.h"
#include "doveadm-who.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
struct who_user {
const char *username;
const char *service;
ARRAY_DEFINE(ips, struct ip_addr);
ARRAY_DEFINE(pids, pid_t);
unsigned int connection_count;
};
static unsigned int who_user_hash(const void *p)
{
const struct who_user *user = p;
return str_hash(user->username) + str_hash(user->service);
}
static int who_user_cmp(const void *p1, const void *p2)
{
const struct who_user *user1 = p1, *user2 = p2;
if (strcmp(user1->username, user2->username) != 0)
return 1;
if (strcmp(user1->service, user2->service) != 0)
return 1;
return 0;
}
static bool
who_user_has_ip(const struct who_user *user, const struct ip_addr *ip)
{
const struct ip_addr *ex_ip;
array_foreach(&user->ips, ex_ip) {
if (net_ip_compare(ex_ip, ip))
return TRUE;
}
return FALSE;
}
static void who_parse_line(const char *line, struct who_line *line_r)
{
const char *const *args = t_strsplit(line, "\t");
const char *ident = args[0];
const char *pid_str = args[1];
const char *refcount_str = args[2];
const char *p, *ip_str;
memset(line_r, 0, sizeof(*line_r));
p = strchr(ident, '/');
line_r->pid = strtoul(pid_str, NULL, 10);
line_r->service = t_strdup_until(ident, p++);
line_r->username = strchr(p, '/');
line_r->refcount = atoi(refcount_str);
ip_str = t_strdup_until(p, line_r->username++);
(void)net_addr2ip(ip_str, &line_r->ip);
}
static bool who_user_has_pid(struct who_user *user, pid_t pid)
{
const pid_t *ex_pid;
array_foreach(&user->pids, ex_pid) {
if (*ex_pid == pid)
return TRUE;
}
return FALSE;
}
static void who_aggregate_line(struct who_context *ctx,
const struct who_line *line)
{
struct who_user *user, lookup_user;
lookup_user.username = line->username;
lookup_user.service = line->service;
user = hash_table_lookup(ctx->users, &lookup_user);
if (user == NULL) {
user = p_new(ctx->pool, struct who_user, 1);
user->username = p_strdup(ctx->pool, line->username);
user->service = p_strdup(ctx->pool, line->service);
p_array_init(&user->ips, ctx->pool, 3);
p_array_init(&user->pids, ctx->pool, 8);
hash_table_insert(ctx->users, user, user);
}
user->connection_count += line->refcount;
if (line->ip.family != 0 && !who_user_has_ip(user, &line->ip))
array_append(&user->ips, &line->ip, 1);
if (!who_user_has_pid(user, line->pid))
array_append(&user->pids, &line->pid, 1);
}
void who_parse_args(struct who_context *ctx, char **args)
{
struct ip_addr net_ip;
unsigned int net_bits;
while (args[1] != NULL) {
if (net_parse_range(args[1], &net_ip, &net_bits) == 0) {
if (ctx->filter.net_bits != 0)
usage();
ctx->filter.net_ip = net_ip;
ctx->filter.net_bits = net_bits;
} else {
if (ctx->filter.username != NULL)
usage();
ctx->filter.username = args[1];
}
args++;
}
}
void who_lookup(struct who_context *ctx, who_callback_t *callback)
{
#define ANVIL_HANDSHAKE "VERSION\tanvil\t1\t0\n"
#define ANVIL_CMD ANVIL_HANDSHAKE"CONNECT-DUMP\n"
struct istream *input;
const char *line;
int fd;
fd = doveadm_connect(ctx->anvil_path);
net_set_nonblock(fd, FALSE);
input = i_stream_create_fd(fd, (size_t)-1, TRUE);
if (write(fd, ANVIL_CMD, strlen(ANVIL_CMD)) < 0)
i_fatal("write(%s) failed: %m", ctx->anvil_path);
while ((line = i_stream_read_next_line(input)) != NULL) {
if (*line == '\0')
break;
T_BEGIN {
struct who_line who_line;
who_parse_line(line, &who_line);
callback(ctx, &who_line);
} T_END;
}
if (input->stream_errno != 0)
i_fatal("read(%s) failed: %m", ctx->anvil_path);
i_stream_destroy(&input);
}
static bool who_user_filter_match(const struct who_user *user,
const struct who_filter *filter)
{
if (filter->username != NULL) {
if (!wildcard_match_icase(user->username, filter->username))
return FALSE;
}
if (filter->net_bits > 0) {
const struct ip_addr *ip;
bool ret = FALSE;
array_foreach(&user->ips, ip) {
if (net_is_in_network(ip, &filter->net_ip,
filter->net_bits)) {
ret = TRUE;
break;
}
}
if (!ret)
return FALSE;
}
return TRUE;
}
static void who_print_user(const struct who_user *user)
{
const struct ip_addr *ip;
const pid_t *pid;
string_t *str = t_str_new(256);
doveadm_print(user->username);
doveadm_print(dec2str(user->connection_count));
doveadm_print(user->service);
str_append_c(str, '(');
array_foreach(&user->pids, pid)
str_printfa(str, "%ld ", (long)*pid);
if (str_len(str) > 1)
str_truncate(str, str_len(str)-1);
str_append_c(str, ')');
doveadm_print(str_c(str));
str_truncate(str, 0);
str_append_c(str, '(');
array_foreach(&user->ips, ip)
str_printfa(str, "%s ", net_ip2addr(ip));
if (str_len(str) > 1)
str_truncate(str, str_len(str)-1);
str_append_c(str, ')');
doveadm_print(str_c(str));
}
static void who_print(struct who_context *ctx)
{
struct hash_iterate_context *iter;
void *key, *value;
doveadm_print_header("username", "username", 0);
doveadm_print_header("connections", "#",
DOVEADM_PRINT_HEADER_FLAG_RIGHT_JUSTIFY);
doveadm_print_header("service", "proto", 0);
doveadm_print_header("pids", "(pids)", 0);
doveadm_print_header("ips", "(ips)", 0);
iter = hash_table_iterate_init(ctx->users);
while (hash_table_iterate(iter, &key, &value)) {
struct who_user *user = value;
if (who_user_filter_match(user, &ctx->filter)) T_BEGIN {
who_print_user(user);
} T_END;
}
hash_table_iterate_deinit(&iter);
}
bool who_line_filter_match(const struct who_line *line,
const struct who_filter *filter)
{
if (filter->username != NULL) {
if (!wildcard_match_icase(line->username, filter->username))
return FALSE;
}
if (filter->net_bits > 0) {
if (!net_is_in_network(&line->ip, &filter->net_ip,
filter->net_bits))
return FALSE;
}
return TRUE;
}
static void who_print_line(struct who_context *ctx,
const struct who_line *line)
{
unsigned int i;
if (!who_line_filter_match(line, &ctx->filter))
return;
for (i = 0; i < line->refcount; i++) T_BEGIN {
doveadm_print(line->username);
doveadm_print(line->service);
doveadm_print(dec2str(line->pid));
doveadm_print(net_ip2addr(&line->ip));
} T_END;
}
static void cmd_who(int argc, char *argv[])
{
struct who_context ctx;
bool separate_connections = FALSE;
int c;
memset(&ctx, 0, sizeof(ctx));
ctx.anvil_path = t_strconcat(doveadm_settings->base_dir, "/anvil", NULL);
ctx.pool = pool_alloconly_create("who users", 10240);
ctx.users = hash_table_create(default_pool, ctx.pool, 0,
who_user_hash, who_user_cmp);
while ((c = getopt(argc, argv, "1a:")) > 0) {
switch (c) {
case '1':
separate_connections = TRUE;
break;
case 'a':
ctx.anvil_path = optarg;
break;
default:
help(&doveadm_cmd_who);
}
}
argv += optind - 1;
who_parse_args(&ctx, argv);
doveadm_print_init(DOVEADM_PRINT_TYPE_TABLE);
if (!separate_connections) {
who_lookup(&ctx, who_aggregate_line);
who_print(&ctx);
} else {
doveadm_print_header_simple("username");
doveadm_print_header("service", "proto", 0);
doveadm_print_header_simple("pid");
doveadm_print_header_simple("ip");
who_lookup(&ctx, who_print_line);
}
hash_table_destroy(&ctx.users);
pool_unref(&ctx.pool);
}
struct doveadm_cmd doveadm_cmd_who = {
cmd_who, "who",
"[-a <anvil socket path>] [-1] [<user mask>] [<ip/bits>]"
};