/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * adt_token.c * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * * This file does not provide any user callable functions. See adt.c */ #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef C2_DEBUG #define DPRINTF(x) {printf x; } #define DFLUSH fflush(stdout); #else #define DPRINTF(x) #define DFLUSH #endif static adt_token_func_t adt_getTokenFunction(char); static char *empty = ""; /* * call adt_token_open() first and adt_token_close() last. * * au_open is sort of broken; it returns a -1 when out of memory that * you're supposed to ignore; au_write and au_close return without * doing anything when a -1 is passed. This code sort of follows the * au_open model except that it calls syslog to indicate underlying * brokenness. Other than that, -1 is ignored. */ void adt_token_open(struct adt_event_state *event) { static int have_syslogged = 0; event->ae_event_handle = au_open(); if (event->ae_event_handle < 0) { if (!have_syslogged) { adt_write_syslog("au_open failed", ENOMEM); have_syslogged = 1; } } else have_syslogged = 0; } /* * call generate_token for each token in the order you want the tokens * generated. */ void adt_generate_token(struct entry *p_entry, void *p_data, struct adt_event_state *event) { adt_token_func_t p_func; assert((p_entry != NULL) && (p_data != NULL) && (event != NULL)); p_func = adt_getTokenFunction(p_entry->en_token_id); assert(p_func != NULL); DPRINTF(("p_entry=%08X, p_data=%08X, offset=%X, msgFmt=%X\n", p_entry, p_data, p_entry->en_offset, p_entry->en_msg_format)); DFLUSH (*p_func)(p_entry->en_type_def, (char *)p_data + p_entry->en_offset, p_entry->en_required, event, p_entry->en_msg_format); } /* call this last */ void adt_token_close(struct adt_event_state *event) { int rc; rc = au_close(event->ae_event_handle, AU_TO_WRITE, event->ae_internal_id); if (rc < 0) adt_write_syslog("au_close failed", errno); } /* * one function per token -- see the jump table at the end of file */ /* ARGSUSED */ static void adt_to_return(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { #ifdef _LP64 (void) au_write(event->ae_event_handle, au_to_return64((int64_t)event->ae_rc, event->ae_type)); #else (void) au_write(event->ae_event_handle, au_to_return32((int32_t)event->ae_rc, event->ae_type)); #endif } /* * AUT_CMD * * the command line is described with argc and argv and the environment * with envp. The envp list is NULL terminated and has no separate * counter; envp will be a NULL list unless the AUDIT_ARGE policy is * set. */ /* ARGSUSED */ static void adt_to_cmd(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { struct adt_internal_state *sp = event->ae_session; int argc; char **argv; char **envp = NULL; argc = ((union convert *)p_data)->tint; p_data = adt_adjust_address(p_data, sizeof (int), sizeof (char **)); argv = ((union convert *)p_data)->tchar2star; p_data = adt_adjust_address(p_data, sizeof (char **), sizeof (char **)); if (sp->as_kernel_audit_policy & AUDIT_ARGE) envp = ((union convert *)p_data)->tchar2star; (void) au_write(event->ae_event_handle, au_to_cmd(argc, argv, envp)); } /* * special case of AUT_CMD with 1 argument that is * a string showing the whole command and no envp */ /* ARGSUSED */ static void adt_to_cmd1(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { char *string; string = ((union convert *)p_data)->tcharstar; if (string == NULL) { if (required) string = empty; else return; } /* argc is hardcoded as 1 */ (void) au_write(event->ae_event_handle, au_to_cmd(1, &string, NULL)); } /* * adt_to_tid -- generic address (ip is only one defined at present) * input: * terminal type: ADT_IPv4, ADT_IPv6... * case: ADT_IPv4 or ADT_IPv6... * ip type * remote port * local port * address * case: not defined... */ /* ARGSUSED */ static void adt_to_tid(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { au_generic_tid_t tid; uint32_t type; au_ip_t *ip; type = ((union convert *)p_data)->tuint32; switch (type) { case ADT_IPv4: case ADT_IPv6: p_data = adt_adjust_address(p_data, sizeof (uint32_t), sizeof (uint32_t)); tid.gt_type = AU_IPADR; ip = &(tid.gt_adr.at_ip); ip->at_type = (type == ADT_IPv4) ? AU_IPv4 : AU_IPv6; ip->at_r_port = ((union convert *)p_data)->tuint16; p_data = adt_adjust_address(p_data, sizeof (uint16_t), sizeof (uint16_t)); ip->at_l_port = ((union convert *)p_data)->tuint16; /* arg3 is for the array element, not the array size */ p_data = adt_adjust_address(p_data, sizeof (uint16_t), sizeof (uint32_t)); (void) memcpy(ip->at_addr, p_data, ip->at_type); break; default: adt_write_syslog("Invalid terminal id type", EINVAL); return; } (void) au_write(event->ae_event_handle, au_to_tid(&tid)); } /* * au_to_frmi takes a char * that is the fmri. */ /* ARGSUSED */ static void adt_to_frmi(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { char *fmri; DPRINTF((" adt_to_fmri dd_datatype=%d\n", def->dd_datatype)); fmri = ((union convert *)p_data)->tcharstar; if (fmri == NULL) { if (required) fmri = empty; else return; } DPRINTF((" fmri=%s\n", fmri)); (void) au_write(event->ae_event_handle, au_to_fmri(fmri)); } /* * au_to_newgroups takes a length and an array of gids * as input. The input to adt_to_newgroups is a length * and a pointer to an array of gids. */ /* ARGSUSED */ static void adt_to_newgroups(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { int n; gid_t *groups; n = ((union convert *)p_data)->tint; if (n < 1) { if (required) { n = 0; /* in case negative n was passed */ } else return; } p_data = adt_adjust_address(p_data, sizeof (int), sizeof (int32_t *)); groups = ((union convert *)p_data)->tgidstar; (void) au_write(event->ae_event_handle, au_to_newgroups(n, groups)); } /* ARGSUSED */ static void adt_to_path(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { char *path; path = ((union convert *)p_data)->tcharstar; if (path != NULL) { DPRINTF((" path=%s\n", path)); (void) au_write(event->ae_event_handle, au_to_path(path)); } else { DPRINTF((" Null path\n")); if (required) (void) au_write(event->ae_event_handle, au_to_path(empty)); } } /* * dummy token id: AUT_PATHLIST */ /* ARGSUSED */ static void adt_to_pathlist(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { char *path; char *working_buf; char *pathlist; char *last_str; pathlist = ((union convert *)p_data)->tcharstar; if (pathlist != NULL) { working_buf = strdup(pathlist); if (working_buf == NULL) { adt_write_syslog("audit failure", errno); if (required) (void) au_write(event->ae_event_handle, au_to_path(empty)); return; } for (path = strtok_r(working_buf, " ", &last_str); path; path = strtok_r(NULL, " ", &last_str)) { DPRINTF((" path=%s\n", path)); (void) au_write(event->ae_event_handle, au_to_path(path)); } } else { DPRINTF((" Null path list\n")); if (required) (void) au_write(event->ae_event_handle, au_to_path(empty)); } } /* * AUT_PRIV */ /* ARGSUSED */ static void adt_to_priv(datadef *def, void *p_data, int required, struct adt_event_state *event, const char *priv_type) { priv_set_t *privilege; privilege = ((union convert *)p_data)->tprivstar; if (privilege != NULL) { (void) au_write(event->ae_event_handle, au_to_privset(priv_type, privilege)); } else { if (required) { DPRINTF((" Null privilege\n")); (void) au_write(event->ae_event_handle, au_to_privset(empty, NULL)); } } } /* * -AUT_PRIV_L AUT_PRIV for a limit set */ /* ARGSUSED */ static void adt_to_priv_limit(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { adt_to_priv(def, p_data, required, event, PRIV_LIMIT); } /* * -AUT_PRIV_I AUT_PRIV for an inherit set */ /* ARGSUSED */ static void adt_to_priv_inherit(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { adt_to_priv(def, p_data, required, event, PRIV_INHERITABLE); } /* ARGSUSED */ static void adt_to_priv_effective(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { adt_to_priv(def, p_data, required, event, PRIV_EFFECTIVE); } static void getCharacteristics(struct auditpinfo_addr *info, pid_t *pid) { int rc; if (*pid == 0) /* getpinfo for this pid */ info->ap_pid = getpid(); else info->ap_pid = *pid; rc = auditon(A_GETPINFO_ADDR, (caddr_t)info, sizeof (struct auditpinfo_addr)); if (rc == -1) { info->ap_auid = AU_NOAUDITID; info->ap_asid = 0; (void) memset((void *)&(info->ap_termid), 0, sizeof (au_tid_addr_t)); info->ap_termid.at_type = AU_IPv4; } } /* * AUT_PROCESS * */ /* ARGSUSED */ static void adt_to_process(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { au_id_t auid; uid_t euid; gid_t egid; uid_t ruid; gid_t rgid; pid_t pid; au_asid_t sid; au_tid_addr_t *tid; struct auditpinfo_addr info; auid = ((union convert *)p_data)->tuid; p_data = adt_adjust_address(p_data, sizeof (uid_t), sizeof (uid_t)); euid = ((union convert *)p_data)->tuid; p_data = adt_adjust_address(p_data, sizeof (uid_t), sizeof (gid_t)); egid = ((union convert *)p_data)->tgid; p_data = adt_adjust_address(p_data, sizeof (gid_t), sizeof (uid_t)); ruid = ((union convert *)p_data)->tuid; p_data = adt_adjust_address(p_data, sizeof (uid_t), sizeof (gid_t)); rgid = ((union convert *)p_data)->tgid; p_data = adt_adjust_address(p_data, sizeof (gid_t), sizeof (pid_t)); pid = ((union convert *)p_data)->tpid; p_data = adt_adjust_address(p_data, sizeof (pid_t), sizeof (uint32_t)); sid = ((union convert *)p_data)->tuint32; p_data = adt_adjust_address(p_data, sizeof (uint32_t), sizeof (au_tid_addr_t *)); tid = ((union convert *)p_data)->ttermid; getCharacteristics(&info, &pid); if (auid == AU_NOAUDITID) auid = info.ap_auid; if (euid == AU_NOAUDITID) euid = geteuid(); if (egid == AU_NOAUDITID) egid = getegid(); if (ruid == AU_NOAUDITID) ruid = getuid(); if (rgid == AU_NOAUDITID) rgid = getgid(); if (tid == NULL) tid = &(info.ap_termid); if (sid == 0) sid = info.ap_asid; if (pid == 0) pid = info.ap_pid; (void) au_write(event->ae_event_handle, au_to_process_ex(auid, euid, egid, ruid, rgid, pid, sid, tid)); } /* * Generate subject information. * If labels are present, generate the subject label token. * If the group audit policy is set, generate the subject group token. * * The required flag does not apply here. * * Non-attributable records are indicated by an auid of AU_NOAUDITID; * no subject token or group token is generated for a non-attributable * record. */ /* ARGSUSED */ static void adt_to_subject(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { struct adt_internal_state *sp = event->ae_session; if (sp->as_info.ai_auid == AU_NOAUDITID) return; assert(sp->as_have_user_data == ADT_HAVE_ALL); (void) au_write(event->ae_event_handle, au_to_subject_ex(sp->as_info.ai_auid, sp->as_euid, sp->as_egid, sp->as_ruid, sp->as_rgid, getpid(), sp->as_info.ai_asid, &(sp->as_info.ai_termid))); if (is_system_labeled()) (void) au_write(event->ae_event_handle, au_to_mylabel()); /* * If AUDIT_GROUP is set, a groups token must be output. * In a session model, the groups list is undefined, so output an * empty list. In a process model, ship it! */ if (sp->as_kernel_audit_policy & AUDIT_GROUP) { int group_count; gid_t grouplist[NGROUPS_MAX]; (void) memset(grouplist, 0, sizeof (grouplist)); if (sp->as_session_model == ADT_PROCESS_MODEL) { if ((group_count = getgroups(NGROUPS_UMAX, grouplist))) { (void) au_write(event->ae_event_handle, au_to_newgroups(group_count, grouplist)); } } else { /* consider deleting this null output */ (void) au_write(event->ae_event_handle, au_to_newgroups(0, grouplist)); } } } /* * adt_to_text() * * The format string, normally null, is sort of a wrapper around * the input. adt_write_text() is a wrapper around au_write that * handles the format string * */ #define TEXT_LENGTH 49 static void adt_write_text(int handle, char *main_text, const char *format) { char buffer[TEXT_LENGTH * 2 + 1]; if (format == NULL) (void) au_write(handle, au_to_text(main_text)); else { (void) snprintf(buffer, TEXT_LENGTH * 2, format, main_text); (void) au_write(handle, au_to_text(buffer)); } } static void adt_to_text(datadef *def, void *p_data, int required, struct adt_event_state *event, char *format) { static int have_syslogged = 0; char *string; char **string_list; char buffer[TEXT_LENGTH + 1]; time_t date; struct tm tm; uint32_t *int_list; int written, available; int i, arrayCount; struct msg_text *list; int list_index; DPRINTF((" adt_to_text dd_datatype=%d\n", def->dd_datatype)); switch (def->dd_datatype) { case ADT_DATE: /* * Consider creating a separate token type for dates * -- store as longs and format them in praudit. * For now, a date is input as a time_t and output as * a text token. If we do this, we need to consider * carrying timezone info so that praudit can * represent times in an unambiguous manner. */ date = ((union convert *)p_data)->tlong; if (strftime(buffer, sizeof (buffer), "%x", localtime_r(&date, &tm)) > TEXT_LENGTH) { if (required) (void) strncpy(buffer, "invalid date", TEXT_LENGTH); else break; } DPRINTF((" text=%s\n", buffer)); adt_write_text(event->ae_event_handle, buffer, format); break; /* * The "input size" is overloaded to mean the list number * and the msg_selector indexes the desired string in * that list */ case ADT_MSG: list = &adt_msg_text[(enum adt_login_text)def->dd_input_size]; list_index = ((union convert *)p_data)->msg_selector; if ((list_index < list->ml_min_index) | (list_index > list->ml_max_index)) string = "Invalid message index"; else string = list->ml_msg_list[list_index + list->ml_offset]; if (string == NULL) { /* null is valid; means skip */ if (required) { string = empty; } else break; } DPRINTF((" text=%s\n", string)); adt_write_text(event->ae_event_handle, string, format); break; case ADT_UID: case ADT_GID: case ADT_UINT: (void) snprintf(buffer, TEXT_LENGTH, "%d", ((union convert *)p_data)->tuint); DPRINTF((" text=%s\n", buffer)); adt_write_text(event->ae_event_handle, buffer, format); break; case ADT_UIDSTAR: case ADT_GIDSTAR: case ADT_UINT32STAR: int_list = ((union convert *)p_data)->tuint32star; p_data = adt_adjust_address(p_data, sizeof (int *), sizeof (int)); arrayCount = ((union convert *)p_data)->tint; string = buffer; available = TEXT_LENGTH; /* space available in buffer */ if (arrayCount < 0) arrayCount = 0; if ((arrayCount > 0) && (int_list != NULL)) { for (; arrayCount > 0; arrayCount--) { written = snprintf(string, available, "%d ", *int_list++); if (written < 1) break; string += written; available -= written; } } else if (required) string = empty; else break; adt_write_text(event->ae_event_handle, buffer, format); break; case ADT_ULONG: (void) snprintf(buffer, TEXT_LENGTH, "%ld", ((union convert *)p_data)->tulong); DPRINTF((" text=%s\n", buffer)); adt_write_text(event->ae_event_handle, buffer, format); break; case ADT_CHARSTAR: string = ((union convert *)p_data)->tcharstar; if (string == NULL) { if (required) string = empty; else break; } DPRINTF((" text=%s\n", string)); adt_write_text(event->ae_event_handle, string, format); break; case ADT_CHAR2STAR: string_list = ((union convert *)p_data)->tchar2star; p_data = adt_adjust_address(p_data, sizeof (char **), sizeof (int)); arrayCount = ((union convert *)p_data)->tint; if (arrayCount < 0) arrayCount = 0; if ((arrayCount > 0) && (string_list != NULL)) { for (i = 0; i < arrayCount; i++) { string = string_list[i]; if (string != NULL) adt_write_text(event->ae_event_handle, string, format); } } else if (required) adt_write_text(event->ae_event_handle, empty, format); else break; break; default: if (!have_syslogged) { /* don't flood the log */ adt_write_syslog("unsupported data conversion", ENOTSUP); have_syslogged = 1; } break; } DFLUSH } /* ARGSUSED */ static void adt_to_uauth(datadef *def, void *p_data, int required, struct adt_event_state *event, char *format) { char *string; DPRINTF((" adt_to_uauth dd_datatype=%d\n", def->dd_datatype)); string = ((union convert *)p_data)->tcharstar; if (string == NULL) { if (required) string = empty; else return; } DPRINTF((" text=%s\n", string)); (void) au_write(event->ae_event_handle, au_to_uauth(string)); } /* ARGSUSED */ static void adt_to_zonename(datadef *def, void *p_data, int required, struct adt_event_state *event, char *notUsed) { char *name; name = ((union convert *)p_data)->tcharstar; if (name != NULL) { DPRINTF((" name=%s\n", name)); (void) au_write(event->ae_event_handle, au_to_zonename(name)); } else { DPRINTF((" Null name\n")); if (required) (void) au_write(event->ae_event_handle, au_to_zonename(empty)); } } /* * no function for header -- the header is generated by au_close() * * no function for trailer -- the trailer is generated by au_close() */ #define MAX_TOKEN_JMP 16 static struct token_jmp token_table[MAX_TOKEN_JMP] = { {AUT_CMD, adt_to_cmd}, {ADT_CMD_ALT, adt_to_cmd1}, {ADT_AUT_PRIV_L, adt_to_priv_limit}, {ADT_AUT_PRIV_I, adt_to_priv_inherit}, {ADT_AUT_PRIV_E, adt_to_priv_effective}, {AUT_NEWGROUPS, adt_to_newgroups}, {AUT_FMRI, adt_to_frmi}, {AUT_PATH, adt_to_path}, {-AUT_PATH, adt_to_pathlist}, /* private extension of token values */ {AUT_PROCESS, adt_to_process}, {AUT_RETURN, adt_to_return}, {AUT_SUBJECT, adt_to_subject}, {AUT_TEXT, adt_to_text}, {AUT_TID, adt_to_tid}, {AUT_UAUTH, adt_to_uauth}, {AUT_ZONENAME, adt_to_zonename} }; /* * {AUT_ARG, adt_to_arg}, not used * {AUT_ACL, adt_to_acl}, not used * {AUT_ARBITRARY, adt_to_arbitrary}, AUT_ARBITRARY is undefined * {AUT_ATTR, adt_to_attr}, not used in mountd * {AUT_EXEC_ARGS, adt_to_exec_args}, not used * {AUT_EXEC_ENV, adt_to_exec_env}, not used * {AUT_EXIT, adt_to_exit}, obsolete * {AUT_FILE, adt_to_file}, AUT_FILE is undefined * {AUT_GROUPS, adt_to_groups}, obsolete * {AUT_HEADER, adt_to_header} not used * {AUT_IN_ADDR, adt_to_in_addr}, not used * {AUT_IP, adt_to_ip}, not used * {AUT_IPC, adt_to_ipc}, not used * {AUT_IPC_PERM, adt_to_ipc_perm}, not used * {AUT_OPAQUE, adt_to_opaque}, not used * {AUT_SEQ, adt_to_seq}, not used * {AUT_SOCKET, adt_to_socket}, not used * {AUT_SOCKET_INET, adt_to_socket_inet}, AUT_SOCKET_INET is undefined * {AUT_TRAILER, adt_to_trailer} not used */ /* find function to generate token */ static adt_token_func_t adt_getTokenFunction(char token_id) { int i; struct token_jmp *p_jmp = token_table; for (i = 0; i < MAX_TOKEN_JMP; i++) { if (token_id == p_jmp->jmp_id) { return (p_jmp->jmp_to); } p_jmp++; } errno = EINVAL; return (NULL); } /* * adjustAddress -- given the address of data, its size, and the type of * the next data field, calculate the offset to the next piece of data. * Depending on the caller, "current" and "next" mean the current pointer * and the next pointer or the last pointer and the current pointer. */ void * adt_adjust_address(void *current_address, size_t current_size, size_t next_size) { ptrdiff_t adjustment; ptrdiff_t remainder; adjustment = (size_t)current_address + current_size; if (next_size) { remainder = adjustment % next_size; if (remainder != 0) adjustment += next_size - remainder; } return ((char *)adjustment); }