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| author | Nicholas Marriott <nicholas.marriott@gmail.com> | 2022-03-08 11:02:17 +0000 |
|---|---|---|
| committer | Nicholas Marriott <nicholas.marriott@gmail.com> | 2022-03-08 11:02:17 +0000 |
| commit | afd9b68d102fc4a7614885267e99299247a031d8 (patch) | |
| tree | 4447ada58d5e8cbebe74838da62b013a8b13157e | |
| parent | 54d22497166de02d50b93e922d762698fb82d25b (diff) | |
Add getpeerid compat.
| -rw-r--r-- | compat/getpeereid.c | 40 | ||||
| -rw-r--r-- | configure.ac | 11 |
2 files changed, 50 insertions, 1 deletions
diff --git a/compat/getpeereid.c b/compat/getpeereid.c new file mode 100644 index 00000000..722f14a2 --- /dev/null +++ b/compat/getpeereid.c @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2022 Nicholas Marriott <nicholas.marriott@gmail.com> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER + * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> +#include <sys/socket.h> + +#include <stdio.h> + +#include "compat.h" + +int +getpeereid(int s, uid_t *uid, gid_t *gid) +{ +#ifdef HAVE_SO_PEERCRED + struct ucred uc; + int len = sizeof uc; + + if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &uc, &len) == -1) + return (-1); + *uid = uc.uid; + *gid = uc.gid; + return (0); +#else + errno = EOPNOTSUPP; + return (-1); +#endif +} diff --git a/configure.ac b/configure.ac index edda0d6b..6ca86ea4 100644 --- a/configure.ac +++ b/configure.ac @@ -160,6 +160,7 @@ AC_REPLACE_FUNCS([ \ freezero \ getdtablecount \ getdtablesize \ + getpeereid \ getline \ getprogname \ memmem \ @@ -169,7 +170,7 @@ AC_REPLACE_FUNCS([ \ strlcat \ strlcpy \ strndup \ - strsep \ + strsep ]) AC_FUNC_STRNLEN @@ -684,6 +685,14 @@ AC_CHECK_DECL( [#include <sys/prctl.h>] ) +# Look for setsockopt(SO_PEERCRED). +AC_CHECK_DECL( + SO_PEERCRED, + AC_DEFINE(HAVE_SO_PEERCRED), + , + [#include <sys/socket.h>] +) + # Look for fcntl(F_CLOSEM). AC_CHECK_DECL( F_CLOSEM, |