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528 Commits

Author SHA1 Message Date
Todd C. Miller
14356c1940 Use process_vm_readv(2) and process_vm_writev(2) if available. 
This is faster than reading/writing from/to the remote process one
word at a time using PTRACE_PEEKDATA and PTRACE_POKEDATA.
 2022-08-25 12:37:19 -06:00
Todd C. Miller
7689b8718c Check for SECCOMP_MODE_FILTER not SECCOMP_SET_MODE_FILTER. 
This matches the actual prctl() call we use.
 2022-06-07 10:50:59 -06:00
Todd C. Miller
25a26f5042 Avoid using vfork(2) in the DSO system(3) wrapper. 
Traditional vfork(2) semantics make it unsafe for use for more than
just vfork(2) + execve(2).
 2022-06-03 09:43:34 -06:00
Todd C. Miller
cec83a05a3 Add configure check for vfork(2) and fall back to fork(2) if missing. 2022-05-31 14:47:39 -06:00
kernelmethod
0b541c2029 Add a --with-apparmor build flag 
Add a new build flag, --with-apparmor, that builds sudo with AppArmor
support. Modify the build script for Debian and Ubuntu to enable this
flag by default.
 2022-05-23 13:41:14 -06:00
Todd C. Miller
ec5164ced2 Define _TIME_BITS=64 on systems that define __TIMESIZE, like GNU libc. 
This should be replaced by a specialized autoconf macro when one
becomes available.
 2022-04-19 13:28:39 -06:00
Todd C. Miller
f1a697a8ff Use close_range(2) in closefrom() emulation if available. 
On Linux, prefer our own closefrom() emulation since the glibc
version may fail if /proc is not present and close_range() is not
supported.  On FreeBSD, closefrom(3) will either call the closefrom
or close_range system call, depending on which is available.
 2022-03-01 09:54:23 -07:00
Todd C. Miller
c13b21c199 Avoid TOCTOU in sudo_mkdir_parents() using openat(2) and mkdirat(2). 
This also allows us to make path const as it should be.
 2021-12-11 08:35:18 -07:00
Todd C. Miller
19065cb221 Use strtoul() on systems without strtoull(). 
We can assume that systems without strtoull() have 32-bit resource limits.
 2021-11-08 18:21:15 -07:00
Todd C. Miller
4eebd53bce parse_gentime: use timegm() to generate time since the epoch 
The timegm() function is non-standard but widely available.
Provide an implementation for those systems that lack it.
Bug #1006
 2021-10-31 09:27:34 -06:00
Todd C. Miller
fc5fa1bbd4 wolfSSL not WolfSSL 2021-10-26 19:00:16 -06:00
Todd C. Miller
cc6157d7d4 Add support for WolfSSL's OpenSSL compatibility layer. 
Based on changes from Hayden Roche
 2021-10-25 13:17:57 -06:00
Todd C. Miller
ef3eb25a1b arc4random: need to include sys/random.h on Solaris too. 
This was removed when Linux genentropy() was disabled.
 2021-10-22 10:44:34 -06:00
Todd C. Miller
23eef895f4 Add an explicit check for sys/sysctl.h. 
This test needs to be done after AC_LANG_WERROR to avoid including
sys/sysctl.h on systems where it is marked as deprecated via a
#warning directive.
 2021-10-20 10:31:35 -06:00
Todd C. Miller
00e53b32e5 Use our own getentropy() by default on Linux. 
The glibc getentropy() emulation will fail on older kernels that
don't support getrandom().
Also use sudo_fatal() instead of sending SIGKILL on getentropy() failure.
GitHub issue #117.
 2021-10-20 09:53:01 -06:00
Todd C. Miller
476f00b82f Emulate closefrom() on macOS using proc_pidinfo(). 
This avoids relying on /dev/fd which may not exist in a chroot jail.
Adapted from a change in OpenSSH by likan_999.student AT sina.com
 2021-09-27 13:44:41 -06:00
Todd C. Miller
fa71679b5a Add gmtime_r and localtime_r tests and compat if missing. 2021-09-17 10:55:06 -06:00
Todd C. Miller
4e0b77be4b tls_init.c: use SSL_CTX_set0_tmp_dh_pkey if present. 
Fixes a warning on OpenSSL 3.0 and plugs a memory leak of dhparams
on config reload.
 2021-09-17 10:55:06 -06:00
Todd C. Miller
c465d8971d Change intercept IPC to use a localhost socket instead of inherited fd. 
This allows intercept mode to work with shells that close all open
fds upon startup.  The ctor in sudo_intercept.so requests the port
number and secret over the socket inherited from the parent then
closes it.  For each policy request, a TCP connection is made to
the sudo parent process to perform the policy check.  Child processes
re-use the TCP socket to request the port number and secret just like
the initial process started by sudo does.
 2021-08-25 14:24:36 -06:00
Todd C. Miller
680fd4a629 Use AC_FUNC_FSEEKO instead of AC_CHECK_FUNCS_ONCE([fseeko]). 
This will define _LARGEFILE_SOURCE, if needed, to make the prototype
visible on older systems.
 2021-08-20 10:59:52 -06:00
Todd C. Miller
ad28b90c4d We still need the pread/pwrite hack for HP-UX 11.11 at least. 
This time around, avoid defining _LARGEFILE64_SOURCE and just declare
pread64/pwrite64 ourselves.
 2021-08-19 19:18:24 -06:00
Todd C. Miller
62aca803ce Older Solaris has getusershell() et al but does not declare it. 2021-08-13 09:52:02 -06:00
Todd C. Miller
0ea5efd8b7 If msg_control is not present in struct msghdr use msg_accrights instead. 
Fixes building on Solaris and probably others.  It is possible to
expose msg_control on Solaris but this requires a specific set of
feature flag defines which can cause other complications.
 2021-08-09 15:50:26 -06:00
Todd C. Miller
36fbb13c4c Use TLS_method() instead of TLS_client_method() throughout. 
OpenSSL returns an error for SSL_accept() if TLS_client_method()
was used to generate the context (LibreSSL doesn't care).

Prior to sudo 1.9.7, TLS_client_method() and TLS_server_method()
were used in the TLS client and server initialization code respectively.
This was refactored in sudo 1.9.7 to allow the code to be shared.
Bug #988
 2021-07-26 13:40:25 -06:00
Todd C. Miller
4a90deb2a0 Add configure check for va_copy instead of using #ifdef 
This prevents the va_copy compat #define from being used if
sudo_compat.h is somehow included before stdarg.h.
 2021-07-25 15:51:23 -06:00
Todd C. Miller
cc3b4ffb04 Remove vsyslog(3) emulation, it is no longer used. 2021-06-14 13:11:39 -06:00
Todd C. Miller
b0a32fe738 Remove the HP-UX 11.0 pread64() hack, it causes problems on modern HP-UX. 2021-04-20 14:59:19 -06:00
Todd C. Miller
a5504148a5 Add admin_flag sudoers option and make --enable-admin-flag take a path. 
It is now possible to disable the Ubuntu admin flag in sudoers
or change its location.
GitHub issue #56
 2021-02-16 13:20:02 -07:00
Todd C. Miller
e392646ed4 Add configure check for SSIZE_MAX 2021-02-08 18:38:17 -07:00
Todd C. Miller
a72d743ec8 Fall back to a temp file if fmemopen() is not available(). 2021-02-07 13:56:15 -07:00
Todd C. Miller
da5c6c6c45 Regenerate configure script with autoconf 2.71. 
Also fix some warnings from the new version.
 2020-12-08 12:35:21 -07:00
Todd C. Miller
0e3e13d872 Define _DARWIN_UNLIMITED_GETGROUPS on macOS to suport > 16 groups. 
On macOS 10.6 and above, getgroups(2) can return more than NGROUPS_MAX
if _DARWIN_UNLIMITED_GETGROUPS or _DARWIN_C_SOURCE is defined.
Bug #946
 2020-12-07 13:15:25 -07:00
Todd C. Miller
a96b9a1373 Newer LibreSSL has SSL_CTX_set_ciphersuites but it is not enabled. 
Add a check for the function declaration in openssl/ssl.h.
 2020-11-16 14:39:52 -07:00
Todd C. Miller
62547746d3 Rename iolog_client -> log_client. 
The logsrvd client code is now used for more than just I/O logging.
 2020-11-09 17:13:04 -07:00
Todd C. Miller
c8c7e1f607 Use ssl_err2string() in message on ldap_ssl_client_init() failure. 
Displaying SSL reason code directly is not user-friendly.
 2020-10-28 09:40:11 -06:00
Todd C. Miller
874c2b27c6 Use a simple string compare on systems without crypt(3). 
This is only used on systems without PAM, BSD authentication or AIX
authentication.  Bug #940.
 2020-09-18 08:18:07 -06:00
Todd C. Miller
019f1f6b93 Use sigabbrev_np(3) to access signal abbreviations if supported. 
glibc-2.32 has removed sys_sigabbrev[], we can use sigabbrev_np(3) instead.
 2020-08-25 16:48:13 -06:00
Todd C. Miller
985af422d2 Rename __dso_public -> sudo_dso_public and move to config.h. 2020-08-12 09:57:42 -06:00
Todd C. Miller
ce97ca28db Use OpenBSD-compatible freezero() in place of explicit_bzero() + free() 2020-08-10 19:24:33 -06:00
Todd C. Miller
cef6e3687e Switch from memset_s() -> explicit_bzero(). 
memset_s() (and all of Annex K) is likely to be removed from the
a future version of the standard.
 2020-08-10 19:24:32 -06:00
Todd C. Miller
03ad96e445 Use the fallthrough attribute instead of /* FALLTHROUGH */ comments. 2020-08-01 13:10:50 -06:00
kuberlog
054939c1ed configure.ac: fix documentation about lecture 2020-07-21 08:47:03 -06:00
Todd C. Miller
be89bdcf7c Fix some warnings displayed by autoconf 2.69b 
This fixes the missing HAVE_GSSAPI_GSSAPI_H define in config.h.in.
TODO: replace shadow_funcs variable in function checks with literals
 2020-07-15 10:12:55 -06:00
Todd C. Miller
48c2bd0007 Declare getdelim(3) if it exists in libc but is not prototyped in stdio.h. 
This can happen on systems with a gcc packages that was built on
and older versions of the OS where getdelim(3) was not present.
 2020-06-06 18:45:27 -06:00
Todd C. Miller
0cf2e09e0c Apply spelling fixes. 
Fixes from PR #30 (ka7) and Bug #925 (fossies.org codespell)
 2020-05-06 09:27:43 -06:00
Todd C. Miller
84d9c7b241 Add configure check for SSL_CTX_get0_certificate(). 
Dummy out verify_server_cert() if it is not present to allow building
on older OpenSSL versions.  Rewriting this to work with old OpenSSL
is not worth the trouble.
 2020-03-17 20:07:48 -06:00
Todd C. Miller
5635c22f6b Add --disable-log-server and --disable-log-client configure options. 
These can be used to optionally disable building sudo_logsrvd and
support for remote I/O logging in the sudoers plugin respectively.
 2020-02-26 13:17:40 -07:00
Todd C. Miller
dc45c4d4ea Add tests for arc4random_buf() and an implementation for those without. 2020-01-30 13:12:25 -07:00
Todd C. Miller
c9b68ccb34 Use AC_CHECK_DECLS when checking for SSL_CTX_set_min_proto_version 
Also use AC_CHECK_FUNCS to check for the other OpenSSL functions
 2020-01-23 09:38:09 -07:00
Todd C. Miller
dde86e585f Add support for building on OpenSSL 1.0.2. 
This adds compatibility defines for some OpenSSL 1.1.x functions.
 2020-01-21 13:27:40 -07:00