diff options
Diffstat (limited to 'src/plugins/audit/simple')
| -rw-r--r-- | src/plugins/audit/simple/Makefile.in | 27 | ||||
| -rw-r--r-- | src/plugins/audit/simple/au_simple_main.c | 263 | ||||
| -rw-r--r-- | src/plugins/audit/simple/deps | 15 | ||||
| -rw-r--r-- | src/plugins/audit/simple/k5audit.exports | 1 |
4 files changed, 306 insertions, 0 deletions
diff --git a/src/plugins/audit/simple/Makefile.in b/src/plugins/audit/simple/Makefile.in new file mode 100644 index 0000000..54961c4 --- /dev/null +++ b/src/plugins/audit/simple/Makefile.in @@ -0,0 +1,27 @@ +mydir=plugins$(S)audit$(S)simple +BUILDTOP=$(REL)..$(S)..$(S).. + +LIBBASE=k5audit +LIBMAJOR=1 +LIBMINOR=1 +RELDIR=../plugins/audit/simple + +#Depends on libkrb5 and libkrb5support. +SHLIB_EXPDEPS= $(KRB5_BASE_DEPLIBS) +SHLIB_EXPLIBS= $(KRB5_BASE_LIBS) + +STOBJLISTS= OBJS.ST ../OBJS.ST +STLIBOBJS= au_simple_main.o + +SRCS= $(srcdir)/au_simple_main.c + +all-unix:: all-liblinks +install-unix:: install-libs +clean-unix:: clean-liblinks clean-libs clean-libobjs + +clean:: + $(RM) au_simple_main.o kdc_j_encode.o + $(RM) lib$(LIBBASE)$(SO_EXT) + +@libnover_frag@ +@libobj_frag@ diff --git a/src/plugins/audit/simple/au_simple_main.c b/src/plugins/audit/simple/au_simple_main.c new file mode 100644 index 0000000..87a2c55 --- /dev/null +++ b/src/plugins/audit/simple/au_simple_main.c @@ -0,0 +1,263 @@ +/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */ +/* plugins/audit/au_simple_main.c - Sample Audit plugin implementation */ +/* + * Copyright (C) 2013 by the Massachusetts Institute of Technology. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * This is a demo implementation of Audit JSON-based module. + * It utilizes MIT Kerberos <kdc_j_encode.h> routines for JSON processing and + * the Fedora/Debian libaudit library for audit logs. + */ + +#include <k5-int.h> +#include <krb5/audit_plugin.h> +#include <libaudit.h> +#include <kdc_j_encode.h> + +krb5_error_code +audit_simple_initvt(krb5_context context, int maj_ver, int min_ver, + krb5_plugin_vtable vtable); + +struct krb5_audit_moddata_st { + int fd; +}; + +/* Open connection to the audit system. Returns 0 on success. */ +static krb5_error_code +open_au(krb5_audit_moddata *auctx_out) +{ + krb5_error_code ret; + int fd = 0; + krb5_audit_moddata auctx; + + auctx = k5calloc(1, sizeof(*auctx), &ret); + if (ret) + return ENOMEM; + fd = audit_open(); + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + auctx->fd = fd; + *auctx_out = auctx; + + return 0; +} + +/* Close connection to the audit system. Returns 0 on success. */ +static krb5_error_code +close_au(krb5_audit_moddata auctx) +{ + int fd = auctx->fd; + + audit_close(fd); + return 0; +} + +/* Log KDC-start event. Returns 0 on success. */ +static krb5_error_code +j_kdc_start(krb5_audit_moddata auctx, krb5_boolean ev_success) +{ + krb5_error_code ret = 0; + int local_type = AUDIT_USER_START; + int fd = auctx->fd; + char *jout = NULL; + + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + ret = kau_j_kdc_start(ev_success, &jout); + if (ret) + return ret; + if (audit_log_user_message(fd, local_type, jout, + NULL, NULL, NULL, ev_success) <= 0) + ret = EIO; + free(jout); + return ret; +} + +/* Log KDC-stop event. Returns 0 on success. */ +static krb5_error_code +j_kdc_stop(krb5_audit_moddata auctx, krb5_boolean ev_success) +{ + krb5_error_code ret = 0; + int local_type = AUDIT_USER_END; + int fd = auctx->fd; + char *jout = NULL; + + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + ret = kau_j_kdc_stop(ev_success, &jout); + if (ret) + return ret; + if (audit_log_user_message(fd, local_type, jout, + NULL, NULL, NULL, ev_success) <= 0) + ret = EIO; + free(jout); + return ret; +} + +/* Log AS_REQ event. Returns 0 on success */ +static krb5_error_code +j_as_req(krb5_audit_moddata auctx, krb5_boolean ev_success, + krb5_audit_state *state) +{ + krb5_error_code ret = 0; + int local_type = AUDIT_USER_AUTH; + int fd = auctx->fd; + char *jout = NULL; + + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + ret = kau_j_as_req(ev_success, state, &jout); + if (ret) + return ret; + if (audit_log_user_message(fd, local_type, jout, + NULL, NULL, NULL, ev_success) <= 0) + ret = EIO; + free(jout); + return ret; +} + +/* Log TGS_REQ event. Returns 0 on success */ +static krb5_error_code +j_tgs_req(krb5_audit_moddata auctx, krb5_boolean ev_success, + krb5_audit_state *state) +{ + krb5_error_code ret = 0; + int local_type = AUDIT_USER_AUTH; + int fd = auctx->fd; + char *jout = NULL; + + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + ret = kau_j_tgs_req(ev_success, state, &jout); + if (ret) + return ret; + if (audit_log_user_message(fd, local_type, jout, + NULL, NULL, NULL, ev_success) <= 0) + ret = EIO; + free(jout); + return ret; +} + +/* Log S4U2SELF event. Returns 0 on success */ +static krb5_error_code +j_tgs_s4u2self(krb5_audit_moddata auctx, krb5_boolean ev_success, + krb5_audit_state *state) +{ + krb5_error_code ret = 0; + int local_type = AUDIT_USER_AUTH; + int fd = auctx->fd; + char *jout = NULL; + + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + ret = kau_j_tgs_s4u2self(ev_success, state, &jout); + if (ret) + return ret; + if (audit_log_user_message(fd, local_type, jout, + NULL, NULL, NULL, ev_success) <= 0) + ret = EIO; + free(jout); + return ret; +} + +/* Log S4U2PROXY event. Returns 0 on success */ +static krb5_error_code +j_tgs_s4u2proxy(krb5_audit_moddata auctx, krb5_boolean ev_success, + krb5_audit_state *state) +{ + krb5_error_code ret = 0; + int local_type = AUDIT_USER_AUTH; + int fd = auctx->fd; + char *jout = NULL; + + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + ret = kau_j_tgs_s4u2proxy(ev_success, state, &jout); + if (ret) + return ret; + if (audit_log_user_message(fd, local_type, jout, + NULL, NULL, NULL, ev_success) <= 0) + ret = EIO; + free(jout); + return ret; +} + +/* Log user-to-user event. Returns 0 on success */ +static krb5_error_code +j_tgs_u2u(krb5_audit_moddata auctx, krb5_boolean ev_success, + krb5_audit_state *state) +{ + krb5_error_code ret = 0; + int local_type = AUDIT_USER_AUTH; + int fd = auctx->fd; + char *jout = NULL; + + if (fd < 0) + return KRB5_PLUGIN_NO_HANDLE; /* audit module is unavailable */ + + ret = kau_j_tgs_u2u(ev_success, state, &jout); + if (ret) + return ret; + if (audit_log_user_message(fd, local_type, jout, + NULL, NULL, NULL, ev_success) <= 0) + ret = EIO; + free(jout); + return ret; +} + +krb5_error_code +audit_simple_initvt(krb5_context context, int maj_ver, + int min_ver, krb5_plugin_vtable vtable) +{ + krb5_audit_vtable vt; + + if (maj_ver != 1) + return KRB5_PLUGIN_VER_NOTSUPP; + + vt = (krb5_audit_vtable)vtable; + vt->name = "simple"; + vt->open = open_au; + vt->close = close_au; + vt->kdc_start = j_kdc_start; + vt->kdc_stop = j_kdc_stop; + vt->as_req = j_as_req; + vt->tgs_req = j_tgs_req; + vt->tgs_s4u2self = j_tgs_s4u2self; + vt->tgs_s4u2proxy = j_tgs_s4u2proxy; + vt->tgs_u2u = j_tgs_u2u; + return 0; +} diff --git a/src/plugins/audit/simple/deps b/src/plugins/audit/simple/deps new file mode 100644 index 0000000..84d4f04 --- /dev/null +++ b/src/plugins/audit/simple/deps @@ -0,0 +1,15 @@ +# +# Generated makefile dependencies follow. +# +au_simple_main.so au_simple_main.po $(OUTPRE)au_simple_main.$(OBJEXT): \ + $(BUILDTOP)/include/autoconf.h $(BUILDTOP)/include/kdc_j_encode.h \ + $(BUILDTOP)/include/krb5/audit_plugin.h $(BUILDTOP)/include/krb5/krb5.h \ + $(BUILDTOP)/include/osconf.h $(BUILDTOP)/include/profile.h \ + $(COM_ERR_DEPS) $(top_srcdir)/include/k5-buf.h $(top_srcdir)/include/k5-err.h \ + $(top_srcdir)/include/k5-gmt_mktime.h $(top_srcdir)/include/k5-int-pkinit.h \ + $(top_srcdir)/include/k5-int.h $(top_srcdir)/include/k5-platform.h \ + $(top_srcdir)/include/k5-plugin.h $(top_srcdir)/include/k5-thread.h \ + $(top_srcdir)/include/k5-trace.h $(top_srcdir)/include/krb5.h \ + $(top_srcdir)/include/krb5/authdata_plugin.h $(top_srcdir)/include/krb5/plugin.h \ + $(top_srcdir)/include/port-sockets.h $(top_srcdir)/include/socket-utils.h \ + au_simple_main.c diff --git a/src/plugins/audit/simple/k5audit.exports b/src/plugins/audit/simple/k5audit.exports new file mode 100644 index 0000000..2070538 --- /dev/null +++ b/src/plugins/audit/simple/k5audit.exports @@ -0,0 +1 @@ +audit_simple_initvt |