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authorMattias Andrée <maandree@operamail.com>2013-11-22 09:51:37 +0100
committerMattias Andrée <maandree@operamail.com>2013-11-22 09:51:37 +0100
commitad8eed222b24d131ce0da40d94f20ca464b31477 (patch)
treed41ee8d5c5b1614ee5dc17e04c2f8555a4c76a45 /src/login.c
parentfork cerberus (diff)
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remove files not wanted from cerberus
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src/login.c')
-rw-r--r--src/login.c200
1 files changed, 0 insertions, 200 deletions
diff --git a/src/login.c b/src/login.c
deleted file mode 100644
index 32f118f..0000000
--- a/src/login.c
+++ /dev/null
@@ -1,200 +0,0 @@
-/**
- * cerberus – Minimal login program
- *
- * Copyright © 2013 Mattias Andrée (maandree@member.fsf.org)
- *
- * 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 <pwd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <string.h>
-
-#include "config.h"
-
-#include "login.h"
-
-
-/**
- * The environment variables
- */
-extern char** environ;
-
-
-/**
- * Set the user gid and uid
- *
- * @param entry The user entry in the password file
- */
-void set_user(struct passwd* entry)
-{
- if (setgid(entry->pw_gid) && entry->pw_gid)
- {
- perror("setgid");
- _exit(1);
- }
-
- if (setuid(entry->pw_uid) && entry->pw_uid)
- {
- perror("setuid");
- _exit(1);
- }
-}
-
-
-/**
- * Change directory to the user's home directory
- *
- * @param entry The user entry in the password file
- */
-void chdir_home(struct passwd* entry)
-{
- if (chdir(entry->pw_dir))
- {
- perror("chdir");
- if (chdir(DEFAULT_HOME))
- {
- perror("chdir");
- sleep(ERROR_SLEEP);
- _exit(1);
- }
- entry->pw_dir = DEFAULT_HOME;
- }
-}
-
-
-/**
- * Make sure the shell to use is definied
- *
- * @param entry The user entry in the password file
- */
-void ensure_shell(struct passwd* entry)
-{
- if ((entry->pw_shell && *(entry->pw_shell)) == 0)
- entry->pw_shell = DEFAULT_SHELL;
-}
-
-
-/**
- * Set environment variables
- *
- * @param entry The user entry in the password file
- * @param preserve_env Whether to preserve the environment
- */
-void set_environ(struct passwd* entry, char preserve_env)
-{
- char* _term = getenv("TERM");
- char* term = NULL;
- if (_term)
- {
- int n = 0, i;
- while (*(_term + n++))
- ;
- term = malloc(n * sizeof(char));
- if (term == NULL)
- {
- perror("malloc");
- sleep(ERROR_SLEEP);
- _exit(1);
- }
- for (i = 0; i < n; i++)
- *(term + i) = *(_term + i);
- }
-
- if (preserve_env == 0)
- {
- environ = malloc(sizeof(char*));
- if (environ == NULL)
- {
- perror("malloc");
- sleep(ERROR_SLEEP);
- _exit(1);
- }
- *environ = NULL;
- }
-
- setenv("HOME", entry->pw_dir, 1);
- setenv("USER", entry->pw_name, 1);
- setenv("LOGUSER", entry->pw_name, 1);
- setenv("SHELL", entry->pw_shell, 1);
- setenv("TERM", term ?: DEFAULT_TERM, 1);
- setenv("PATH", entry->pw_uid ? PATH : PATH_ROOT, 1);
-
- if (term)
- free(term);
-}
-
-
-/**
- * Replace the current image with the user's login shell
- *
- * @param entry The user entry in the password file
- */
-void exec_shell(struct passwd* entry)
-{
- int child_argc = 0;
- char** child_argv = malloc(5 * sizeof(char*));
- long n = 0;
- char* sh = entry->pw_shell;
- char* login_sh;
-
- while (*(sh + n++))
- ;
-
- login_sh = malloc((n + (strchr(sh, ' ') ? 5 : 1)) * sizeof(char));
- if (login_sh == NULL)
- {
- perror("malloc");
- sleep(ERROR_SLEEP);
- _exit(1);
- }
-
- if (strchr(sh, ' '))
- {
- login_sh += 5;
- strcpy(login_sh, "exec ");
- *(login_sh + n) = 0;
-
- *(child_argv + child_argc++) = DEFAULT_SHELL;
- *(child_argv + child_argc++) = "-" DEFAULT_SH;
- *(child_argv + child_argc++) = "-c";
- *(child_argv + child_argc++) = login_sh - 5;
- }
- else
- {
- int i;
- for (i = n - 1; i >= 0; i--)
- if (*(sh + i) == '/')
- {
- i++;
- break;
- }
-
- login_sh = malloc((n + 1) * sizeof(char));
- *login_sh++ = '-';
- strcpy(login_sh, sh + i);
- *(login_sh + n) = 0;
-
- *(child_argv + child_argc++) = sh;
- *(child_argv + child_argc++) = login_sh - 1;
- }
-
- *(child_argv + child_argc) = NULL;
- execvp(*child_argv, child_argv + 1);
- perror("execvp");
- sleep(ERROR_SLEEP);
- _exit(1);
-}
-