diff options
author | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-06-17 20:09:33 -0400 |
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committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2016-06-17 20:09:33 -0400 |
commit | 4d12729aa4026229e4e118b924cc3b1c75ca214b (patch) | |
tree | abd9a69ec11504844148b1017f9e9601ef7e90b8 /test | |
parent | 4f175a22cf726bfa09652d8d9ca6374785561348 (diff) |
write setuid, move things around
Diffstat (limited to 'test')
-rw-r--r-- | test/.gitignore | 1 | ||||
-rw-r--r-- | test/runner.c | 168 |
2 files changed, 0 insertions, 169 deletions
diff --git a/test/.gitignore b/test/.gitignore deleted file mode 100644 index 09230a9..0000000 --- a/test/.gitignore +++ /dev/null @@ -1 +0,0 @@ -/runner diff --git a/test/runner.c b/test/runner.c deleted file mode 100644 index 110819d..0000000 --- a/test/runner.c +++ /dev/null @@ -1,168 +0,0 @@ -/* Copyright (C) 2015 Luke Shumaker <lukeshu@sbcglobal.net> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301 USA - */ -#define _GNU_SOURCE -#include <stdio.h> -#include <stdlib.h> -#include <sys/socket.h> -#include <sys/un.h> -#include <error.h> -#include <errno.h> -#include <stdarg.h> -#include <signal.h> -#include <unistd.h> -#include <sys/stat.h> -#include <sys/wait.h> - -#define _(s) s - -const char *xgetenv(const char *name, const char *unset) { - const char *val = getenv(name); - if (!val) - val = unset; - return val; -} - -char *xasprintf(const char *format, ...) { - va_list arg; - int len; - char *str = NULL; - - va_start(arg, format); - len = vasprintf(&str, format, arg); - va_end(arg); - - if (len < 0) - error(EXIT_FAILURE, errno, _("Could not allocate memory in vasprintf")); - - return str; -} - -#define xasprintfa(...) (__extension__ ({ char *heap = xasprintf(__VA_ARGS__); char *stack = strdupa(heap); free(heap); stack; })) - -int pid = -1; -void -sigchld_handler(int sig __attribute__((__unused__))) { - int status; - pid = waitpid(pid, &status, WNOHANG); - int exited = WEXITSTATUS(status); - error(exited, 0, "%ld exited with status %d", (long)pid, exited); - exit(0); -} - -union addr { - struct sockaddr gen; - struct sockaddr_un un; -}; - -int new_unix_sock(const char *filename, int type) { - union addr addr; - addr.un.sun_family = AF_UNIX; - strcpy(addr.un.sun_path, filename); - - int sock = socket(AF_UNIX, type, 0); - if (sock < 0) - error(EXIT_FAILURE, errno, "socket(%d, %d)", AF_UNIX, type); - unlink(filename); - if (bind(sock, &addr.gen, sizeof(addr))) - error(EXIT_FAILURE, errno, "bind(%d, sockaddr(\"%s\"))", sock, filename); - switch (type) { - case SOCK_STREAM: - case SOCK_SEQPACKET: - if (listen(sock, 5)) - error(EXIT_FAILURE, errno, "listen(%d /* \"%s\" */, %d)", sock, filename, 5); - break; - case SOCK_DGRAM: - break; - default: - error(EXIT_FAILURE, errno, "new_unix_sock: Unrecognized type: %d", type); - } - return sock; -} - -char *cmdname = "nshd_runner"; -const char *notify_sockname = "notify.sock"; -const char *nslcd_sockname = "nslcd.sock"; -void cleanup(void) { - if (nslcd_sockname) - unlink(nslcd_sockname); - if (notify_sockname) - unlink(notify_sockname); - fprintf(stderr, "%s: Exiting\n", cmdname); -} - -int main(int argc, char *argv[]) { - cmdname = argv[0]; - if (argc != 2) { - error(2, 0, _("Usage: %s NSHD_PROGRAM"), argv[0]); - } - - atexit(&cleanup); - int nslcd_sock = new_unix_sock(nslcd_sockname , SOCK_STREAM); - int notify_sock = new_unix_sock(notify_sockname, SOCK_DGRAM ); - - struct sigaction act; - sigemptyset(&act.sa_mask); - act.sa_flags = SA_RESTART; - act.sa_handler = sigchld_handler; - if (sigaction(SIGCHLD, &act, 0)) - error(EXIT_FAILURE, errno, "sigaction"); - - - pid = fork(); - switch (pid) { - case -1: - error(EXIT_FAILURE, errno, "fork"); - case 0: - close(notify_sock); - dup2(nslcd_sock, 3); - if (nslcd_sock != 3) - close(nslcd_sock); - pid = getpid(); - setenv("LISTEN_PID", xasprintfa("%ld", (long)pid), 1); - setenv("LISTEN_FDS", "1", 1); - setenv("NOTIFY_SOCKET", notify_sockname, 1); - execl(argv[1], argv[1], NULL); - error(EXIT_FAILURE, errno, "execl"); - } - - while (1) { - union addr client_addr; - socklen_t client_size; - char buf[4097]; - ssize_t bytes_read = recvfrom(notify_sock, buf, sizeof(buf)-1, 0, &client_addr.gen, &client_size); - if (bytes_read < 1) - error(EXIT_FAILURE, errno, "recvfrom"); - if (buf[bytes_read-1] != '\n') { - buf[bytes_read] = '\n'; - bytes_read++; - } - ssize_t bytes_written = 0; - while (bytes_written < bytes_read) { - ssize_t n = write(2, &(buf[bytes_written]), bytes_read-bytes_written); - if (n < 0) { - bytes_written = -1; - break; - } - bytes_written += n; - } - if (bytes_written < 0) - error(EXIT_FAILURE, errno, "write"); - } - error(EXIT_FAILURE, 0, "not reached"); - return EXIT_FAILURE; -} |