#include <ctype.h>
#include <stdlib.h>
+#include <netdb.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <arpa/nameser.h>
EXEC SQL INCLUDE sqlca;
extern char *whoami;
extern int dbms_errno, mr_errcode;
-EXEC SQL BEGIN DECLARE SECTION;
-extern char stmt_buf[];
-EXEC SQL END DECLARE SECTION;
-
EXEC SQL WHENEVER SQLERROR DO dbmserr();
return MR_SUCCESS;
}
+int access_update_user(struct query *q, char *argv[], client *cl)
+{
+ EXEC SQL BEGIN DECLARE SECTION;
+ int users_id, unix_uid, status, comments, secure;
+ char login[USERS_LOGIN_SIZE], shell[USERS_SHELL_SIZE];
+ char winconsoleshell[USERS_WINCONSOLESHELL_SIZE], last[USERS_LAST_SIZE];
+ char first[USERS_FIRST_SIZE], middle[USERS_MIDDLE_SIZE];
+ char clearid[USERS_CLEARID_SIZE], type[USERS_TYPE_SIZE];
+ char signature[USERS_SIGNATURE_SIZE];
+ EXEC SQL END DECLARE SECTION;
+
+ /* The two fields we let users update themselves didn't appear until
+ * version 11.
+ */
+ if (q->version < 11)
+ return MR_PERM;
+
+ if (cl->users_id != *(int *)argv[0])
+ return MR_PERM;
+ users_id = *(int *)argv[0];
+
+ EXEC SQL SELECT u.login, u.unix_uid, u.shell, u.winconsoleshell, u.last,
+ u.first, u.middle, u.status, u.clearid, u.type, u.comments, u.signature,
+ u.secure INTO :login, :unix_uid, :shell, :winconsoleshell, :last, :first,
+ :middle, :status, :clearid, :type, :comments, :signature, :secure
+ FROM USERS u WHERE u.users_id = :users_id;
+
+ /* None of these things can have changed. */
+ if (strcmp(argv[1], strtrim(login)) ||
+ (unix_uid != atoi(argv[2])) ||
+ strcmp(argv[3], strtrim(shell)) ||
+ strcmp(argv[4], strtrim(winconsoleshell)) ||
+ strcmp(argv[5], strtrim(last)) ||
+ strcmp(argv[6], strtrim(first)) ||
+ strcmp(argv[7], strtrim(middle)) ||
+ (status != atoi(argv[8])) ||
+ strcmp(argv[9], strtrim(clearid)) ||
+ strcmp(argv[10], strtrim(type)) ||
+ (comments != *(int *)argv[11]) ||
+ strcmp(argv[12], strtrim(signature)) ||
+ (secure != atoi(argv[13])))
+ return MR_PERM;
+
+ return MR_SUCCESS;
+}
/* access_login - verify that client name equals specified login name
*
if (!strcmp(q->shortname, "gual"))
{
EXEC SQL SELECT users_id INTO :id FROM users
- WHERE login LIKE :argv[0] AND users_id != 0;
+ WHERE login = :argv[0] AND users_id != 0;
}
else if (!strcmp(q->shortname, "gubl"))
{
EXEC SQL SELECT users_id INTO :id FROM users u
- WHERE u.login LIKE :argv[0] AND u.users_id != 0;
+ WHERE u.login = :argv[0] AND u.users_id != 0;
}
else if (!strcmp(q->shortname, "guau"))
{
}
+/* access_spob - check access for set_pobox */
+
+int access_spob(struct query *q, char *argv[], client *cl)
+{
+ EXEC SQL BEGIN DECLARE SECTION;
+ int id;
+ EXEC SQL END DECLARE SECTION;
+ int status;
+
+ if (!strcmp(argv[1], "IMAP"))
+ {
+ EXEC SQL SELECT owner INTO :id FROM filesys f
+ WHERE f.label = :argv[2] AND f.type = 'IMAP' AND
+ f.lockertype = 'USER';
+ if (cl->users_id != id)
+ return MR_PERM;
+ }
+
+ /* Non-query owners can't forward mail to a POSTOFFICE or MAILHUB server,
+ * nor to a nonresolving domain.
+ */
+ if (!strcmp(argv[1], "SMTP") || !strcmp(argv[1], "SPLIT"))
+ {
+ status = check_mail_string(argv[2]);
+ if (status)
+ return status;
+ }
+
+ if (cl->users_id != *(int *)argv[0])
+ return MR_PERM;
+ else
+ return MR_SUCCESS;
+}
+
/* access_list - check access for most list operations
*
* Inputs: argv[0] - list_id
* q - query name
* argv[2] - member ID (only for queries "amtl" and "dmfl")
- * argv[7] - group IID (only for query "ulis")
+ * argv[7] - group ID (only for query "ulis")
* cl - client name
*
* - check that client is a member of the access control list
int access_list(struct query *q, char *argv[], client *cl)
{
EXEC SQL BEGIN DECLARE SECTION;
- int list_id, acl_id, flags, gid, users_id;
- char acl_type[9], *newname;
+ int list_id, acl_id, flags, gid, users_id, member_id, member_acl_id;
+ int memacl_id, mailman, mailman_id;
+ char acl_type[LIST_ACL_TYPE_SIZE], name[LIST_NAME_SIZE], *newname;
+ char member_acl_type[LIST_ACL_TYPE_SIZE], memacl_type[LIST_ACL_TYPE_SIZE];
EXEC SQL END DECLARE SECTION;
- int status;
+ int status, cnt;
+ char *buf;
list_id = *(int *)argv[0];
- EXEC SQL SELECT acl_id, acl_type, gid, publicflg
- INTO :acl_id, :acl_type, :gid, :flags
+ member_id = *(int *)argv[2];
+ EXEC SQL SELECT acl_id, acl_type, memacl_id, memacl_type,
+ gid, publicflg, name, mailman, mailman_id
+ INTO :acl_id, :acl_type, :memacl_id, :memacl_type,
+ :gid, :flags, :name, :mailman, :mailman_id
FROM list
WHERE list_id = :list_id;
if (sqlca.sqlerrd[2] != 1)
return MR_INTERNAL;
- /* if amtl or dmfl and list is public allow client to add or delete self */
- if (((!strcmp("amtl", q->shortname) && flags) ||
- (!strcmp("dmfl", q->shortname))))
- {
- if (!strcmp("USER", argv[1]) && *(int *)argv[2] == cl->users_id)
- return MR_SUCCESS;
- if (!strcmp("KERBEROS", argv[1]) && *(int *)argv[2] == -cl->client_id)
- return MR_SUCCESS;
- } /* if update_list, don't allow them to change the GID or rename to
- a username other than their own */
- else if (!strcmp("ulis", q->shortname))
+ /* if update_list, don't allow them to change the GID or rename to a
+ username other than their own */
+ if (!strcmp("ulis", q->shortname))
{
if (!strcmp(argv[7], UNIQUE_GID))
{
if (gid != atoi(argv[7]))
return MR_PERM;
}
+
newname = argv[1];
+
+ /* Check that it doesn't conflict with the Grouper namespace. */
+ if (strlen(newname) > 4 && isdigit(newname[2]) &&
+ isdigit(newname[3]) && newname[4] == '-')
+ {
+ if (!strncasecmp(newname, "fa", 2) ||
+ !strncasecmp(newname, "sp", 2) ||
+ !strncasecmp(newname, "su", 2) ||
+ !strncasecmp(newname, "ja", 2))
+ return MR_RESERVED;
+ }
+
+ /* Don't let anyone take owner-foo list names. They interact
+ * weirdly with the aliases automatically generated by
+ * mailhub.gen.
+ */
+ if (!strncasecmp(newname, "owner-", 6))
+ return MR_RESERVED;
+
EXEC SQL SELECT users_id INTO :users_id FROM users
WHERE login = :newname;
- if ((sqlca.sqlcode != SQL_NO_MATCH) && (users_id != cl->users_id))
+ if ((sqlca.sqlcode != SQL_NO_MATCH) && strcmp(strtrim(name), newname) &&
+ (users_id != cl->users_id))
return MR_PERM;
+
+ /* For modern enough clients, don't allow ordinary users to toggle
+ * the mailman bit or change the server.
+ */
+ if (q->version >= 10)
+ {
+ if (mailman != atoi(argv[9]))
+ return MR_PERM;
+
+ if (mailman_id != *(int *)argv[10])
+ return MR_PERM;
+ }
}
- /* check for client in access control list */
- status = find_member(acl_type, acl_id, cl);
- if (!status)
+ /* Don't allow non-query owners to add STRINGs to lists if they end
+ * in a domain that's MIT.EDU or one of the hosts that provide the
+ * MAILHUB or POSTOFFICE services.
+ */
+ if (!strcmp(q->shortname, "amtl") || !strcmp(q->shortname, "atml"))
+ {
+ if (!strcmp("STRING", argv[1]))
+ {
+ buf = malloc(0);
+ status = id_to_name(*(int *)argv[2], STRINGS_TABLE, &buf);
+ if (status)
+ return status;
+
+ status = check_mail_string(buf);
+ free(buf);
+ if (status)
+ return status;
+ }
+ }
+
+ /* check for client in access control list and return success right
+ * away if it's there. */
+ if (find_member(acl_type, acl_id, cl))
+ return MR_SUCCESS;
+
+ /* If not amtl, atml, or dmfl, we lose. */
+ if (strcmp(q->shortname, "amtl") && strcmp(q->shortname, "atml") &&
+ strcmp(q->shortname, "dmfl") && strcmp(q->shortname, "tmol"))
return MR_PERM;
- return MR_SUCCESS;
+ if (find_member(memacl_type, memacl_id, cl))
+ return MR_SUCCESS;
+
+ if (flags || q->type == MR_Q_DELETE)
+ {
+ if (!strcmp("USER", argv[1]) && *(int *)argv[2] == cl->users_id)
+ return MR_SUCCESS;
+ if (!strcmp("KERBEROS", argv[1]) && *(int *)argv[2] == -cl->client_id)
+ return MR_SUCCESS;
+ if (!strcmp("LIST", argv[1]) && !strcmp("dmfl", q->shortname))
+ {
+ EXEC SQL SELECT acl_id, acl_type INTO :member_acl_id,
+ :member_acl_type
+ FROM list
+ WHERE list_id = :member_id;
+
+ if (find_member(member_acl_type, member_acl_id, cl))
+ return MR_SUCCESS;
+ }
+ }
+
+ /* Otherwise fail. */
+ return MR_PERM;
}
int access_visible_list(struct query *q, char *argv[], client *cl)
{
EXEC SQL BEGIN DECLARE SECTION;
- int list_id, acl_id, flags ;
- char acl_type[9];
+ int list_id, acl_id, memacl_id, flags ;
+ char acl_type[LIST_ACL_TYPE_SIZE], memacl_type[LIST_ACL_TYPE_SIZE];
EXEC SQL END DECLARE SECTION;
int status;
list_id = *(int *)argv[0];
- EXEC SQL SELECT hidden, acl_id, acl_type
- INTO :flags, :acl_id, :acl_type
+ EXEC SQL SELECT hidden, acl_id, acl_type, memacl_id, memacl_type
+ INTO :flags, :acl_id, :acl_type, :memacl_id, :memacl_type
FROM list
WHERE list_id = :list_id;
if (sqlca.sqlerrd[2] != 1)
/* check for client in access control list */
status = find_member(acl_type, acl_id, cl);
if (!status)
- return MR_PERM;
-
+ {
+ status = find_member(memacl_type, memacl_id, cl);
+ if (!status)
+ return MR_PERM;
+ }
return MR_SUCCESS;
}
int access_vis_list_by_name(struct query *q, char *argv[], client *cl)
{
EXEC SQL BEGIN DECLARE SECTION;
- int acl_id, flags, rowcount;
- char acl_type[9], *listname;
+ int acl_id, memacl_id, flags, rowcount, list_id;
+ char acl_type[LIST_ACL_TYPE_SIZE], memacl_type[LIST_ACL_TYPE_SIZE];
+ char *listname;
EXEC SQL END DECLARE SECTION;
int status;
listname = argv[0];
- EXEC SQL SELECT hidden, acl_id, acl_type INTO :flags, :acl_id, :acl_type
- FROM list WHERE name = :listname;
+ EXEC SQL SELECT hidden, acl_id, acl_type, memacl_id, memacl_type, list_id
+ INTO :flags, :acl_id, :acl_type, :memacl_id, :memacl_type, :list_id
+ FROM list
+ WHERE name = :listname;
rowcount = sqlca.sqlerrd[2];
if (rowcount > 1)
if (!flags)
return MR_SUCCESS;
- /* check for client in access control list */
+ /* If the user is a member of the acl, memacl, or the list itself,
+ * accept them.
+ */
status = find_member(acl_type, acl_id, cl);
+ if (!status)
+ status = find_member(memacl_type, memacl_id, cl);
+ if (!status)
+ status = find_member("LIST", list_id, cl);
if (!status)
return MR_PERM;
/* access_member - allow user to access member of type "USER" and name matches
* username, or to access member of type "KERBEROS" and the principal matches
* the user, or to access member of type "LIST" and list is one that user is
- * on the acl of, or the list is visible.
+ * on the acl of, or the list is visible. Allow anyone to look up list
+ * memberships of MACHINEs.
*/
int access_member(struct query *q, char *argv[], client *cl)
return MR_SUCCESS;
}
+ if (!strcmp(argv[0], "MACHINE") || !strcmp(argv[0], "RMACHINE"))
+ return MR_SUCCESS;
+
return MR_PERM;
}
{
EXEC SQL BEGIN DECLARE SECTION;
int acl_id;
- char *name, acl_type[9];
+ char *name, acl_type[LIST_ACL_TYPE_SIZE];
EXEC SQL END DECLARE SECTION;
int status;
char *c;
/* access_host - successful if owner of host, or subnet containing host
*/
-int host_access_level = 0; /* 1 for network, 2 for host */
-
int access_host(struct query *q, char *argv[], client *cl)
{
EXEC SQL BEGIN DECLARE SECTION;
- int mid, sid, id;
- char mtype[9], stype[9];
+ int mid, sid, id, subnet_status;
+ char mtype[MACHINE_OWNER_TYPE_SIZE], stype[SUBNET_OWNER_TYPE_SIZE];
+ char *account_number;
EXEC SQL END DECLARE SECTION;
- int status;
+ int status, idx;
- if (q->type == APPEND)
+ if (q->version < 6)
+ idx = 0;
+ else if (q->version >= 6 && q->version < 8)
+ idx = 1;
+ else
+ idx = 2;
+
+ if (q->type == MR_Q_APPEND)
{
- id = *(int *)argv[8];
- EXEC SQL SELECT s.owner_type, s.owner_id
- INTO :stype, :sid FROM subnet s
+ /* Non-query owner must set use to zero */
+ if (atoi(argv[6 + idx]) != 0)
+ return MR_PERM;
+
+ /* ... and start the hostname with a letter */
+ if (isdigit(argv[0][0]))
+ return MR_BAD_CHAR;
+
+ id = *(int *)argv[8 + idx];
+ EXEC SQL SELECT s.owner_type, s.owner_id, s.status
+ INTO :stype, :sid, :subnet_status FROM subnet s
WHERE s.snet_id = :id;
mid = 0;
- }
- else if (q->type == RETRIEVE)
- {
- if (strcmp(argv[0], "*") || strcmp(argv[1], "*") ||
- strcmp(argv[2], "*") || strcmp(argv[3], "*"))
+
+ /* Non query owner must provide valid billing information. */
+ if (q->version >= 8)
+ {
+ if (subnet_status == SNET_STATUS_BILLABLE)
+ {
+ account_number = argv[7];
+ EXEC SQL SELECT account_number FROM accountnumbers
+ WHERE account_number = :account_number;
+ if (sqlca.sqlcode == SQL_NO_MATCH)
+ return MR_ACCOUNT_NUMBER;
+ }
+ }
+
+ if (find_member(stype, sid, cl))
return MR_SUCCESS;
else
return MR_PERM;
}
- else
+ else /* q-type == MR_Q_UPDATE */
{
+ EXEC SQL BEGIN DECLARE SECTION;
+ int status, acomment, use, ocomment, snid;
+ char contact[MACHINE_CONTACT_SIZE], address[MACHINE_ADDRESS_SIZE];
+ char name[MACHINE_NAME_SIZE];
+ char billing_contact[MACHINE_BILLING_CONTACT_SIZE];
+ EXEC SQL END DECLARE SECTION;
+
id = *(int *)argv[0];
- EXEC SQL SELECT m.owner_type, m.owner_id, s.owner_type, s.owner_id
- INTO :mtype, :mid, :stype, :sid FROM machine m, subnet s
- WHERE m.mach_id = :id and s.snet_id = m.snet_id;
- }
- if (sqlca.sqlerrd[2] != 1)
- return MR_PERM;
+ EXEC SQL SELECT m.name, m.use, m.contact, m.billing_contact, m.status,
+ m.address, m.owner_type, m.owner_id, m.acomment, m.ocomment, m.snet_id,
+ s.owner_type, s.owner_id, s.status INTO :name, :use, :contact,
+ :billing_contact, :status, :address, :mtype, :mid, :acomment,
+ :ocomment, :snid, :stype, :sid, :subnet_status
+ FROM machine m, subnet s
+ WHERE m.mach_id = :id AND s.snet_id = m.snet_id;
+ if (dbms_errno)
+ return mr_errcode;
+
+ /* Non query owner must provide valid billing information. */
+ if (q->version >= 8)
+ {
+ if ((subnet_status == SNET_STATUS_BILLABLE) &&
+ (atoi(argv[10]) != 3))
+ {
+ account_number = argv[8];
+ EXEC SQL SELECT account_number FROM accountnumbers
+ WHERE account_number = :account_number;
+ if (sqlca.sqlcode == SQL_NO_MATCH)
+ return MR_ACCOUNT_NUMBER;
+ }
+ }
+
+ /* non-query-owner cannot change use or ocomment */
+ if ((use != atoi(argv[7 + idx])) || (ocomment != *(int *)argv[14 + idx]))
+ return MR_PERM;
+
+ /* or rename to start with digit */
+ if (isdigit(argv[1][0]) && strcmp(strtrim(name), argv[1]))
+ return MR_BAD_CHAR;
+
+ if (!find_member(stype, sid, cl))
+ {
+ if (find_member(mtype, mid, cl))
+ {
+ /* host owner also cannot change contact, status, address,
+ owner, or acomment */
+ if (strcmp(argv[6], strtrim(contact)) ||
+ (status != atoi(argv[8 + idx])) ||
+ strcmp(argv[10 + idx], strtrim(address)) ||
+ strcmp(argv[11 + idx], strtrim(mtype)) ||
+ (mid != *(int *)argv[12 + idx]) ||
+ (acomment != *(int *)argv[13 + idx]))
+ return MR_PERM;
+ /* Billing contact field didn't appear until version 6 */
+ if (q->version >= 6)
+ if (strcmp(argv[7], strtrim(billing_contact)))
+ return MR_PERM;
+ }
+ else
+ return MR_PERM;
+ }
+
+ /* If moving to a new subnet, make sure user is on acl there */
+ id = *(int *)argv[9 + idx];
+ if (id != snid)
+ {
+ EXEC SQL SELECT owner_type, owner_id INTO :stype, :sid
+ FROM subnet WHERE snet_id=:id;
+ if (!find_member(stype, sid, cl))
+ return MR_PERM;
+ }
- status = find_member(stype, sid, cl);
- if (status)
- {
- host_access_level = 1;
- return MR_SUCCESS;
- }
- status = find_member(mtype, mid, cl);
- if (status)
- {
- host_access_level = 2;
return MR_SUCCESS;
}
- else
- return MR_PERM;
}
{
EXEC SQL BEGIN DECLARE SECTION;
int cnt, id, mid, sid;
- char mtype[256], stype[256];
+ char mtype[MACHINE_OWNER_TYPE_SIZE], stype[SUBNET_OWNER_TYPE_SIZE];
EXEC SQL END DECLARE SECTION;
int status;
- if (q->type == RETRIEVE)
+ if (q->type == MR_Q_RETRIEVE)
return MR_SUCCESS;
id = *(int *)argv[1];
+ if (q->type == MR_Q_APPEND && isdigit(argv[0][0]))
+ return MR_BAD_CHAR;
+
EXEC SQL SELECT count(name) INTO :cnt from hostalias WHERE mach_id = :id;
if (dbms_errno)
return mr_errcode;
- /* if the type is APPEND, this is ahal and we need to make sure there
+ /* if the type is MR_Q_APPEND, this is ahal and we need to make sure there
* will be no more than 2 aliases. If it's not, it must be dhal and
* any owner will do.
*/
- if (q->type == APPEND && cnt >= 2)
+ if (q->type == MR_Q_APPEND && cnt >= 2)
return MR_PERM;
EXEC SQL SELECT m.owner_type, m.owner_id, s.owner_type, s.owner_id
INTO :mtype, :mid, :stype, :sid FROM machine m, subnet s
}
-
/* access_snt - check for retrieving network structure
*/
int access_snt(struct query *q, char *argv[], client *cl)
{
- if (q->type == RETRIEVE)
+ if (q->type == MR_Q_RETRIEVE)
return MR_SUCCESS;
return MR_PERM;
}
+
+
+/* access_printer */
+int access_printer(struct query *q, char *argv[], client *cl)
+{
+ EXEC SQL BEGIN DECLARE SECTION;
+ char type[PRINTSERVERS_OWNER_TYPE_SIZE];
+ int id, mach_id;
+ EXEC SQL END DECLARE SECTION;
+ int status;
+
+ mach_id = *(int *)argv[PRN_RM];
+ EXEC SQL SELECT owner_type, owner_id INTO :type, :id
+ FROM printservers WHERE mach_id = :mach_id;
+ if (sqlca.sqlcode)
+ return MR_PERM;
+
+ status = find_member(type, id, cl);
+ if (status)
+ return MR_SUCCESS;
+ else
+ return MR_PERM;
+}
+
+/* access_zephyr */
+int access_zephyr(struct query *q, char *argv[], client *cl)
+{
+ EXEC SQL BEGIN DECLARE SECTION;
+ char type[ZEPHYR_OWNER_TYPE_SIZE];
+ char *class;
+ int id;
+ EXEC SQL END DECLARE SECTION;
+ int status;
+
+ class = argv[ZA_CLASS];
+ EXEC SQL SELECT owner_type, owner_id INTO :type, :id
+ FROM zephyr WHERE class = :class;
+ if (sqlca.sqlcode)
+ return MR_PERM;
+
+ status = find_member(type, id, cl);
+ if (status)
+ return MR_SUCCESS;
+ else
+ return MR_PERM;
+}
+
+/* access_container - check access for most container operations
+ *
+ * Inputs: argv[0] - cnt_id
+ * q - query name
+ * cl - client name
+ *
+ * - check if that client is a member of the access control list
+ * - OR, if the query is add_machine_to_container or delete_machine_from_container
+ * check if the client is a memeber of the mem_acl list
+ * - if the query is update_container and the container is to be renamed and
+ * it is a top-level container, only priviledged users can do it
+ */
+
+int access_container(struct query *q, char *argv[], client *cl)
+{
+ EXEC SQL BEGIN DECLARE SECTION;
+ int cnt_id, acl_id, memacl_id, mach_id, machine_owner_id, flag;
+ char acl_type[CONTAINERS_ACL_TYPE_SIZE], memacl_type[CONTAINERS_ACL_TYPE_SIZE];
+ char name[CONTAINERS_NAME_SIZE], *newname;
+ char machine_owner_type[MACHINE_OWNER_TYPE_SIZE];
+ EXEC SQL END DECLARE SECTION;
+ int status;
+
+ cnt_id = *(int *)argv[0];
+
+ /* if amcn or dmcn, container id is the second argument */
+ if (strcmp(q->shortname, "amcn") == 0 || strcmp(q->shortname, "dmcn") == 0)
+ {
+ mach_id = *(int *)argv[0];
+ cnt_id = *(int *)argv[1];
+ }
+
+ EXEC SQL SELECT acl_id, acl_type, memacl_id, memacl_type, name, publicflg
+ INTO :acl_id, :acl_type, :memacl_id, :memacl_type, :name, :flag
+ FROM containers
+ WHERE cnt_id = :cnt_id;
+
+ if (sqlca.sqlerrd[2] != 1)
+ return MR_INTERNAL;
+
+ /* trim off the trailing spaces */
+ strcpy(name, strtrim(name));
+
+ /* Only dbadmin can rename containers. */
+ if (!strcmp(q->shortname, "ucon"))
+ {
+ newname = argv[1];
+ if (strcmp(name, newname))
+ return MR_PERM;
+ }
+
+ /* check for client in access control list and return success right
+ * away if it's there. */
+ if (find_member(acl_type, acl_id, cl))
+ return MR_SUCCESS;
+
+ /* If not amcn, dmcn, we lose. */
+ if (strcmp(q->shortname, "amcn") && strcmp(q->shortname, "dmcn"))
+ return MR_PERM;
+
+ if (find_member(memacl_type, memacl_id, cl))
+ return MR_SUCCESS;
+
+ /* if the container is public or the query is delete, grant access if client
+ * is on owner list */
+ if (flag || q->type == MR_Q_DELETE)
+ {
+ EXEC SQL SELECT owner_type, owner_id INTO :machine_owner_type,
+ :machine_owner_id
+ FROM machine
+ WHERE mach_id = :mach_id;
+
+ if (sqlca.sqlerrd[2] == 1 && strcmp("NONE", machine_owner_type) &&
+ find_member(machine_owner_type, machine_owner_id, cl))
+ return MR_SUCCESS;
+ }
+ /* Otherwise fail. */
+ return MR_PERM;
+}
+
+int check_mail_string(char *mailstring)
+{
+ EXEC SQL BEGIN DECLARE SECTION;
+ char mname[MACHINE_NAME_SIZE];
+ EXEC SQL END DECLARE SECTION;
+ char *p, *host, *hostdomain;
+ struct hostent *hp;
+ struct mxentry *mxrecords = NULL;
+ int index;
+
+ p = strchr(mailstring, '@');
+ if (p)
+ {
+ host = strdup(++p);
+
+ /* Replace .LOCAL at end of host with .MIT.EDU if needed. */
+ hostdomain = strrchr(host, '.');
+ if (hostdomain && !strcasecmp(hostdomain, ".LOCAL"))
+ {
+ index = hostdomain - host;
+ host[index] = '\0';
+ host = realloc(host, strlen(host) + strlen(".MIT.EDU") + 1);
+ strcat(host, ".MIT.EDU");
+ }
+
+ hp = gethostbyname(host);
+ if (hp)
+ {
+ host = realloc(host, strlen(hp->h_name) + 1);
+ if (host)
+ strcpy(host, hp->h_name);
+ }
+ else
+ {
+ /* Possibly a host with no A record but MX records. Check. */
+ mxrecords = getmxrecords(host);
+ if (!mxrecords)
+ return MR_BAD_MAIL_STRING;
+ else
+ return MR_SUCCESS;
+ }
+
+ if (!strcasecmp(host, "MIT.EDU"))
+ {
+ free(host);
+ return MR_BAD_MAIL_STRING;
+ }
+
+ EXEC SQL DECLARE csr_listmem CURSOR FOR
+ SELECT UNIQUE m.name FROM machine m, serverhosts sh
+ WHERE m.mach_id = sh.mach_id
+ AND (sh.service = 'MAILHUB' or sh.service = 'POSTOFFICE');
+ if (dbms_errno)
+ {
+ free(host);
+ return mr_errcode;
+ }
+ EXEC SQL OPEN csr_listmem;
+ if (dbms_errno)
+ {
+ free(host);
+ return mr_errcode;
+ }
+ while (1)
+ {
+ EXEC SQL FETCH csr_listmem INTO :mname;
+ if (sqlca.sqlcode)
+ break;
+
+ if (!strcasecmp(host, strtrim(mname)))
+ {
+ free(host);
+ return MR_BAD_MAIL_STRING;
+ }
+ }
+ free(host);
+ }
+
+ return MR_SUCCESS;
+}
+
+/*
+ * This ought to be in the bind library. It's adapted from sendmail.
+ */
+
+/*
+ * These are defined in RFC833. Some bind interface headers don't declare them.
+ * Ghod help us if they're ever actually incompatible with what's in
+ * the arpa/nameser.h header.
+ */
+#ifndef PACKETSZ
+#define PACKETSZ 512 /* maximum packet size */
+#endif
+#ifndef HFIXEDSZ
+#define HFIXEDSZ 12 /* #/bytes of fixed data in header */
+#endif
+#ifndef INT32SZ
+#define INT32SZ 4 /* for systems without 32-bit ints */
+#endif
+#ifndef INT16SZ
+#define INT16SZ 2 /* for systems without 16-bit ints */
+#endif
+
+/* minimum possible size of MX record in packet */
+#define MIN_MX_SIZE 8 /* corresp to "a.com 0" w/ terminating space */
+
+struct mxentry *getmxrecords(const char *name)
+{
+ char answer[PACKETSZ], *eom, *cp, *bp;
+ int n, ancount, qdcount, buflen, type, pref, ind;
+ static struct mxentry pmx[(PACKETSZ - HFIXEDSZ) / MIN_MX_SIZE];
+ static char MXHostBuf[PACKETSZ - HFIXEDSZ];
+ HEADER *hp;
+
+ pmx->name = (char *)NULL;
+ pmx->pref = -1;
+ n = res_search(name, C_IN,T_MX, (unsigned char *)&answer, sizeof(answer));
+ if (n == -1)
+ return((struct mxentry *)NULL);
+ if ((size_t)n > sizeof(answer))
+ n = sizeof(answer);
+
+ hp = (HEADER *)&answer;
+ cp = answer + HFIXEDSZ;
+ eom = answer + n;
+ h_errno = 0;
+ for (qdcount = ntohs(hp->qdcount); qdcount--; cp += n + QFIXEDSZ)
+ if ((n = dn_skipname((unsigned char *)cp, (unsigned char *)eom)) < 0)
+ return((struct mxentry *)NULL);
+ buflen = sizeof(MXHostBuf) - 1;
+ bp = MXHostBuf;
+ ind = 0;
+ ancount = ntohs(hp->ancount);
+ while (--ancount >= 0 && cp < eom)
+ {
+ if ((n = dn_expand((unsigned char *)answer, (unsigned char *)eom,
+ (unsigned char *)cp, bp, buflen)) < 0)
+ break;
+ cp += n;
+ GETSHORT(type, cp);
+ cp += INT16SZ + INT32SZ;
+ GETSHORT(n, cp);
+ if (type != T_MX)
+ {
+ cp += n;
+ continue;
+ }
+ GETSHORT(pref, cp);
+ if ((n = dn_expand((unsigned char *)answer, (unsigned char *)eom,
+ (unsigned char *)cp, bp, buflen)) < 0)
+ break;
+ cp += n;
+
+ pmx[ind].name = bp;
+ pmx[ind].pref = pref;
+ ++ind;
+
+ n = strlen((const char *)bp);
+ bp += n;
+ *bp++ = '\0';
+
+ buflen -= n + 1;
+ }
+
+ pmx[ind].name = (char *)NULL;
+ pmx[ind].pref = -1;
+ return(pmx);
+}
andersk / moira.git / blobdiff