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File _service:tar_scm:openssh-6.6.1p1-log-in-chroot.patch of Package openssh
Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/openssh-6.6.1p1-log-in-chroot.patch diff -up openssh-8.6p1/log.c.log-in-chroot openssh-8.6p1/log.c --- openssh-8.6p1/log.c.log-in-chroot 2021-04-16 05:55:25.000000000 +0200 +++ openssh-8.6p1/log.c 2021-04-19 14:43:08.544843434 +0200 @@ -194,6 +194,11 @@ void log_init(const char *av0, LogLevel level, SyslogFacility facility, int on_stderr) { + log_init_handler(av0, level, facility, on_stderr, 1); +} + +void +log_init_handler(const char *av0, LogLevel level, SyslogFacility facility, int on_stderr, int reset_handler) { #if defined(HAVE_OPENLOG_R) && defined(SYSLOG_DATA_INIT) struct syslog_data sdata = SYSLOG_DATA_INIT; #endif @@ -206,8 +211,10 @@ log_init(const char *av0, LogLevel level exit(1); } - log_handler = NULL; - log_handler_ctx = NULL; + if (reset_handler) { + log_handler = NULL; + log_handler_ctx = NULL; + } log_on_stderr = on_stderr; if (on_stderr) diff -up openssh-8.6p1/log.h.log-in-chroot openssh-8.6p1/log.h --- openssh-8.6p1/log.h.log-in-chroot 2021-04-19 14:43:08.544843434 +0200 +++ openssh-8.6p1/log.h 2021-04-19 14:56:46.931042176 +0200 @@ -52,6 +52,7 @@ typedef enum { typedef void (log_handler_fn)(LogLevel, int, const char *, void *); void log_init(const char *, LogLevel, SyslogFacility, int); +void log_init_handler(const char *, LogLevel, SyslogFacility, int, int); LogLevel log_level_get(void); int log_change_level(LogLevel); int log_is_on_stderr(void); diff -up openssh-8.6p1/monitor.c.log-in-chroot openssh-8.6p1/monitor.c --- openssh-8.6p1/monitor.c.log-in-chroot 2021-04-19 14:43:08.526843298 +0200 +++ openssh-8.6p1/monitor.c 2021-04-19 14:55:25.286424043 +0200 @@ -297,6 +297,8 @@ monitor_child_preauth(struct ssh *ssh, s close(pmonitor->m_log_sendfd); pmonitor->m_log_sendfd = pmonitor->m_recvfd = -1; + pmonitor->m_state = "preauth"; + authctxt = (Authctxt *)ssh->authctxt; memset(authctxt, 0, sizeof(*authctxt)); ssh->authctxt = authctxt; @@ -408,6 +410,8 @@ monitor_child_postauth(struct ssh *ssh, close(pmonitor->m_recvfd); pmonitor->m_recvfd = -1; + pmonitor->m_state = "postauth"; + monitor_set_child_handler(pmonitor->m_pid); ssh_signal(SIGHUP, &monitor_child_handler); ssh_signal(SIGTERM, &monitor_child_handler); @@ -480,7 +484,7 @@ monitor_read_log(struct monitor *pmonito /* Log it */ if (log_level_name(level) == NULL) fatal_f("invalid log level %u (corrupted message?)", level); - sshlogdirect(level, forced, "%s [preauth]", msg); + sshlogdirect(level, forced, "%s [%s]", msg, pmonitor->m_state); sshbuf_free(logmsg); free(msg); @@ -1868,13 +1872,28 @@ monitor_init(void) mon = xcalloc(1, sizeof(*mon)); monitor_openfds(mon, 1); + mon->m_state = ""; + return mon; } void -monitor_reinit(struct monitor *mon) +monitor_reinit(struct monitor *mon, const char *chroot_dir) { - monitor_openfds(mon, 0); + struct stat dev_log_stat; + char *dev_log_path; + int do_logfds = 0; + + if (chroot_dir != NULL) { + xasprintf(&dev_log_path, "%s/dev/log", chroot_dir); + + if (stat(dev_log_path, &dev_log_stat) != 0) { + debug_f("/dev/log doesn't exist in %s chroot - will try to log via monitor using [postauth] suffix", chroot_dir); + do_logfds = 1; + } + free(dev_log_path); + } + monitor_openfds(mon, do_logfds); } #ifdef GSSAPI diff -up openssh-8.6p1/monitor.h.log-in-chroot openssh-8.6p1/monitor.h --- openssh-8.6p1/monitor.h.log-in-chroot 2021-04-19 14:43:08.527843305 +0200 +++ openssh-8.6p1/monitor.h 2021-04-19 14:43:08.545843441 +0200 @@ -80,10 +80,11 @@ struct monitor { int m_log_sendfd; struct kex **m_pkex; pid_t m_pid; + char *m_state; }; struct monitor *monitor_init(void); -void monitor_reinit(struct monitor *); +void monitor_reinit(struct monitor *, const char *); struct Authctxt; void monitor_child_preauth(struct ssh *, struct monitor *); diff -up openssh-8.6p1/session.c.log-in-chroot openssh-8.6p1/session.c --- openssh-8.6p1/session.c.log-in-chroot 2021-04-19 14:43:08.534843358 +0200 +++ openssh-8.6p1/session.c 2021-04-19 14:43:08.545843441 +0200 @@ -160,6 +160,7 @@ login_cap_t *lc; static int is_child = 0; static int in_chroot = 0; +static int have_dev_log = 1; /* File containing userauth info, if ExposeAuthInfo set */ static char *auth_info_file = NULL; @@ -661,6 +662,7 @@ do_exec(struct ssh *ssh, Session *s, con int ret; const char *forced = NULL, *tty = NULL; char session_type[1024]; + struct stat dev_log_stat; if (options.adm_forced_command) { original_command = command; @@ -720,6 +722,10 @@ do_exec(struct ssh *ssh, Session *s, con tty += 5; } + if (lstat("/dev/log", &dev_log_stat) != 0) { + have_dev_log = 0; + } + verbose("Starting session: %s%s%s for %s from %.200s port %d id %d", session_type, tty == NULL ? "" : " on ", @@ -1524,14 +1530,6 @@ child_close_fds(struct ssh *ssh) /* Stop directing logs to a high-numbered fd before we close it */ log_redirect_stderr_to(NULL); - - /* - * Close any extra open file descriptors so that we don't have them - * hanging around in clients. Note that we want to do this after - * initgroups, because at least on Solaris 2.3 it leaves file - * descriptors open. - */ - closefrom(STDERR_FILENO + 1); } /* @@ -1665,8 +1663,6 @@ do_child(struct ssh *ssh, Session *s, co exit(1); } - closefrom(STDERR_FILENO + 1); - do_rc_files(ssh, s, shell); /* restore SIGPIPE for child */ @@ -1691,9 +1687,17 @@ do_child(struct ssh *ssh, Session *s, co argv[i] = NULL; optind = optreset = 1; __progname = argv[0]; - exit(sftp_server_main(i, argv, s->pw)); + exit(sftp_server_main(i, argv, s->pw, have_dev_log)); } + /* + * Close any extra open file descriptors so that we don't have them + * hanging around in clients. Note that we want to do this after + * initgroups, because at least on Solaris 2.3 it leaves file + * descriptors open. + */ + closefrom(STDERR_FILENO + 1); + fflush(NULL); /* Get the last component of the shell name. */ diff -up openssh-8.6p1/sftp.h.log-in-chroot openssh-8.6p1/sftp.h --- openssh-8.6p1/sftp.h.log-in-chroot 2021-04-16 05:55:25.000000000 +0200 +++ openssh-8.6p1/sftp.h 2021-04-19 14:43:08.545843441 +0200 @@ -97,5 +97,5 @@ struct passwd; -int sftp_server_main(int, char **, struct passwd *); +int sftp_server_main(int, char **, struct passwd *, int); void sftp_server_cleanup_exit(int) __attribute__((noreturn)); diff -up openssh-8.6p1/sftp-server.c.log-in-chroot openssh-8.6p1/sftp-server.c --- openssh-8.6p1/sftp-server.c.log-in-chroot 2021-04-16 05:55:25.000000000 +0200 +++ openssh-8.6p1/sftp-server.c 2021-04-19 14:43:08.545843441 +0200 @@ -1644,7 +1644,7 @@ sftp_server_usage(void) } int -sftp_server_main(int argc, char **argv, struct passwd *user_pw) +sftp_server_main(int argc, char **argv, struct passwd *user_pw, int reset_handler) { int i, r, in, out, ch, skipargs = 0, log_stderr = 0; ssize_t len, olen; @@ -1657,7 +1657,7 @@ sftp_server_main(int argc, char **argv, extern char *__progname; __progname = ssh_get_progname(argv[0]); - log_init(__progname, log_level, log_facility, log_stderr); + log_init_handler(__progname, log_level, log_facility, log_stderr, reset_handler); pw = pwcopy(user_pw); @@ -1730,7 +1730,7 @@ sftp_server_main(int argc, char **argv, } } - log_init(__progname, log_level, log_facility, log_stderr); + log_init_handler(__progname, log_level, log_facility, log_stderr, reset_handler); /* * On platforms where we can, avoid making /proc/self/{mem,maps} diff -up openssh-8.6p1/sftp-server-main.c.log-in-chroot openssh-8.6p1/sftp-server-main.c --- openssh-8.6p1/sftp-server-main.c.log-in-chroot 2021-04-16 05:55:25.000000000 +0200 +++ openssh-8.6p1/sftp-server-main.c 2021-04-19 14:43:08.545843441 +0200 @@ -50,5 +50,5 @@ main(int argc, char **argv) return 1; } - return (sftp_server_main(argc, argv, user_pw)); + return (sftp_server_main(argc, argv, user_pw, 0)); } diff -up openssh-8.6p1/sshd.c.log-in-chroot openssh-8.6p1/sshd.c --- openssh-8.6p1/sshd.c.log-in-chroot 2021-04-19 14:43:08.543843426 +0200 +++ openssh-8.6p1/sshd.c 2021-04-19 14:43:08.545843441 +0200 @@ -559,7 +559,7 @@ privsep_postauth(struct ssh *ssh, Authct } /* New socket pair */ - monitor_reinit(pmonitor); + monitor_reinit(pmonitor, options.chroot_directory); pmonitor->m_pid = fork(); if (pmonitor->m_pid == -1) @@ -578,6 +578,11 @@ privsep_postauth(struct ssh *ssh, Authct close(pmonitor->m_sendfd); pmonitor->m_sendfd = -1; + close(pmonitor->m_log_recvfd); + pmonitor->m_log_recvfd = -1; + + if (pmonitor->m_log_sendfd != -1) + set_log_handler(mm_log_handler, pmonitor); /* Demote the private keys to public keys. */ demote_sensitive_data();
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