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-rw-r--r--server/util/find_uid.c296
1 files changed, 0 insertions, 296 deletions
diff --git a/server/util/find_uid.c b/server/util/find_uid.c
deleted file mode 100644
index 965966ef3..000000000
--- a/server/util/find_uid.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/*
- SSSD
-
- Create uid table
-
- Authors:
- Sumit Bose <sbose@redhat.com>
-
- Copyright (C) 2009 Red Hat
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program 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 General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <stdio.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <errno.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-#include <talloc.h>
-#include <ctype.h>
-#include <sys/time.h>
-
-#include "dhash.h"
-#include "util/util.h"
-
-#define INITIAL_TABLE_SIZE 64
-#define PATHLEN (NAME_MAX + 14)
-#define BUFSIZE 4096
-
-static void *hash_talloc(const size_t size, void *pvt)
-{
- return talloc_size(pvt, size);
-}
-
-static void hash_talloc_free(void *ptr, void *pvt)
-{
- talloc_free(ptr);
-}
-
-static errno_t get_uid_from_pid(const pid_t pid, uid_t *uid)
-{
- int ret;
- char path[PATHLEN];
- struct stat stat_buf;
- int fd;
- char buf[BUFSIZE];
- char *p;
- char *e;
- char *endptr;
- long num=0;
-
- ret = snprintf(path, PATHLEN, "/proc/%d/status", pid);
- if (ret < 0) {
- DEBUG(1, ("snprintf failed"));
- return EINVAL;
- } else if (ret >= PATHLEN) {
- DEBUG(1, ("path too long?!?!\n"));
- return EINVAL;
- }
-
- ret = lstat(path, &stat_buf);
- if (ret == -1) {
- if (errno == ENOENT) {
- DEBUG(7, ("Proc file [%s] is not available anymore, continuing.\n",
- path));
- return EOK;
- }
- DEBUG(1, ("lstat failed [%d][%s].\n", errno, strerror(errno)));
- return errno;
- }
-
- if (!S_ISREG(stat_buf.st_mode)) {
- DEBUG(1, ("not a regular file\n"));
- return EINVAL;
- }
-
- fd = open(path, O_RDONLY);
- if (fd == -1) {
- if (errno == ENOENT) {
- DEBUG(7, ("Proc file [%s] is not available anymore, continuing.\n",
- path));
- return EOK;
- }
- DEBUG(1, ("open failed [%d][%s].\n", errno, strerror(errno)));
- return errno;
- }
- ret = read(fd, buf, BUFSIZE);
- if (ret == -1) {
- DEBUG(1, ("read failed [%d][%s].\n", errno, strerror(errno)));
- return errno;
- }
-
- ret = close(fd);
- if (ret == -1) {
- DEBUG(1, ("close failed [%d][%s].\n", errno, strerror(errno)));
- }
-
- p = strstr(buf, "\nUid:\t");
- if (p != NULL) {
- p += 6;
- e = strchr(p,'\t');
- if (e == NULL) {
- DEBUG(1, ("missing delimiter.\n"));
- return EINVAL;
- } else {
- *e = '\0';
- }
- num = strtol(p, &endptr, 10);
- if(errno == ERANGE) {
- DEBUG(1, ("strtol failed [%s].\n", strerror(errno)));
- return errno;
- }
- if (*endptr != '\0') {
- DEBUG(1, ("uid contains extra characters\n"));
- return EINVAL;
- }
-
- if (num < 0 || num >= INT_MAX) {
- DEBUG(1, ("uid out of range.\n"));
- return ERANGE;
- }
-
- } else {
- DEBUG(1, ("format error\n"));
- return EINVAL;
- }
-
- *uid = num;
-
- return EOK;
-}
-
-static errno_t name_to_pid(const char *name, pid_t *pid)
-{
- long num;
- char *endptr;
-
- errno = 0;
- num = strtol(name, &endptr, 10);
- if(errno == ERANGE) {
- perror("strtol");
- return errno;
- }
-
- if (*endptr != '\0') {
- DEBUG(1, ("pid string contains extra characters.\n"));
- return EINVAL;
- }
-
- if (num <= 0 || num >= INT_MAX) {
- DEBUG(1, ("pid out of range.\n"));
- return ERANGE;
- }
-
- *pid = num;
-
- return EOK;
-}
-
-static int only_numbers(char *p)
-{
- while(*p!='\0' && isdigit(*p)) ++p;
- return *p;
-}
-
-static errno_t get_active_uid_linux(hash_table_t *table, uid_t search_uid)
-{
- DIR *proc_dir = NULL;
- struct dirent *dirent;
- int ret;
- pid_t pid = -1;
- uid_t uid;
-
- hash_key_t key;
- hash_value_t value;
-
- proc_dir = opendir("/proc");
- if (proc_dir == NULL) {
- DEBUG(1, ("Cannot open proc dir.\n"));
- ret = errno;
- goto done;
- };
-
- errno = 0;
- while ((dirent = readdir(proc_dir)) != NULL) {
- if (only_numbers(dirent->d_name) != 0) continue;
- ret = name_to_pid(dirent->d_name, &pid);
- if (ret != EOK) {
- DEBUG(1, ("name_to_pid failed.\n"));
- goto done;
- }
-
- ret = get_uid_from_pid(pid, &uid);
- if (ret != EOK) {
- DEBUG(1, ("get_uid_from_pid failed.\n"));
- goto done;
- }
-
- if (table != NULL) {
- key.type = HASH_KEY_ULONG;
- key.ul = (unsigned long) uid;
- value.type = HASH_VALUE_ULONG;
- value.ul = (unsigned long) uid;
-
- ret = hash_enter(table, &key, &value);
- if (ret != HASH_SUCCESS) {
- DEBUG(1, ("cannot add to table [%s]\n", hash_error_string(ret)));
- ret = ENOMEM;
- goto done;
- }
- } else {
- if (uid == search_uid) {
- ret = EOK;
- goto done;
- }
- }
-
-
- errno = 0;
- }
- if (errno != 0 && dirent == NULL) {
- DEBUG(1 ,("readdir failed.\n"));
- ret = errno;
- goto done;
- }
-
- ret = closedir(proc_dir);
- proc_dir = NULL;
- if (ret == -1) {
- DEBUG(1 ,("closedir failed, watch out.\n"));
- }
-
- if (table != NULL) {
- ret = EOK;
- } else {
- ret = ENOENT;
- }
-
-done:
- if (proc_dir != NULL) closedir(proc_dir);
- return ret;
-}
-
-errno_t get_uid_table(TALLOC_CTX *mem_ctx, hash_table_t **table)
-{
-#ifdef __linux__
- int ret;
-
- ret = hash_create_ex(INITIAL_TABLE_SIZE, table, 0, 0, 0, 0,
- hash_talloc, hash_talloc_free, mem_ctx,
- NULL, NULL);
- if (ret != HASH_SUCCESS) {
- DEBUG(1, ("hash_create_ex failed [%s]\n", hash_error_string(ret)));
- return ENOMEM;
- }
-
- return get_active_uid_linux(*table, 0);
-#else
- return ENOSYS;
-#endif
-}
-
-errno_t check_if_uid_is_active(uid_t uid, bool *result)
-{
- int ret;
-
- ret = get_active_uid_linux(NULL, uid);
- if (ret != EOK && ret != ENOENT) {
- DEBUG(1, ("get_uid_table failed.\n"));
- return ret;
- }
-
- if (ret == EOK) {
- *result = true;
- } else {
- *result = false;
- }
-
- return EOK;
-}
generated by cgit (git 2.34.1) at 2024-05-05 09:00:46 +0000