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-rw-r--r--login/programs/request.c646
1 files changed, 0 insertions, 646 deletions
diff --git a/login/programs/request.c b/login/programs/request.c
deleted file mode 100644
index 33f5524c32..0000000000
--- a/login/programs/request.c
+++ /dev/null
@@ -1,646 +0,0 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 1997.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#include <assert.h>
-#include <errno.h>
-#include <string.h>
-#include <unistd.h>
-#include <utmp.h>
-#include <libintl.h>
-
-#include "utmpd.h"
-#include "utmpd-private.h"
-
-
-/* Prototypes for the local functions. */
-static int process_request (client_connection *connection);
-static int send_reply (client_connection *connect, const reply_header *reply);
-
-static int do_setutent (client_connection *connection);
-static int do_getutent (client_connection *connection);
-static int do_endutent (client_connection *connection);
-static int do_getutline (client_connection *connection);
-static int do_getutid (client_connection *connection);
-static int do_pututline (client_connection *connection);
-static int do_updwtmp (client_connection *connection);
-
-static int internal_getut_r (client_connection *connection,
- const struct utmp *id, struct utmp *buffer);
-
-
-/* Read data from the client on CONNECTION. */
-int
-read_data (client_connection *connection)
-{
- ssize_t nbytes;
-
- assert (connection);
- assert ((connection->read_end - connection->read_ptr) > 0);
-
- /* Read data. */
- nbytes = read (connection->sock, connection->read_ptr,
- connection->read_end - connection->read_ptr);
- if (nbytes > 0)
- {
- size_t total_bytes;
-
- /* Update read pointer. */
- connection->read_ptr += nbytes;
-
- /* Check if we have a complete request header. */
- total_bytes = connection->read_ptr - connection->read_base;
- if (total_bytes >= sizeof (request_header))
- {
- request_header *header;
-
- /* Check if we have a complete request. */
- header = (request_header *)connection->read_base;
- if (total_bytes >= header->size)
- {
- /* Process the request. */
- if (process_request (connection) < 0)
- return -1;
-
- /* Adjust read pointer, and flush buffer. */
- connection->read_ptr -= header->size;
- memmove (connection->read_base,
- connection->read_base + header->size,
- connection->read_ptr - connection->read_base);
- }
- }
-
- return 0;
- }
-
- if (nbytes < 0)
- error (0, errno, _("cannot read from client"));
-
- return -1;
-}
-
-
-/* Write data to the client on CONNECTION. */
-int
-write_data (client_connection *connection)
-{
- ssize_t nbytes;
-
- assert (connection);
- assert ((connection->write_ptr - connection->write_base) > 0);
-
- /* Write data. */
- nbytes = write (connection->sock, connection->write_base,
- connection->write_ptr - connection->write_base);
- if (nbytes > 0)
- {
- /* Adjust write pointer and flush buffer. */
- connection->write_ptr -= nbytes;
- memmove (connection->write_base, connection->write_base + nbytes,
- connection->write_ptr - connection->write_base);
-
- return 0;
- }
-
- if (nbytes < 0)
- error (0, errno, _("cannot write to client"));
-
- return -1;
-}
-
-
-/* Process the request received on CONNECTION. Returns 0 if
- successful, -1 if not. */
-static int
-process_request (client_connection *connection)
-{
- request_header *header;
-
- assert (connection);
- assert (connection->read_base);
-
- header = (request_header *)connection->read_base;
- if (header->version != UTMPD_VERSION)
- {
- warning (EINVAL, "invalid protocol version");
- return -1;
- }
-
- switch (header->type)
- {
- case UTMPD_REQ_SETUTENT: return do_setutent (connection);
- case UTMPD_REQ_GETUTENT: return do_getutent (connection);
- case UTMPD_REQ_ENDUTENT: return do_endutent (connection);
- case UTMPD_REQ_GETUTLINE: return do_getutline (connection);
- case UTMPD_REQ_GETUTID: return do_getutid (connection);
- case UTMPD_REQ_PUTUTLINE: return do_pututline (connection);
- case UTMPD_REQ_UPDWTMP: return do_updwtmp (connection);
- default:
- warning (EINVAL, "invalid request type");
- return -1;
- }
-}
-
-
-/* Send the reply specified by HEADER to the client on CONNECTION.
- Returns 0 if successful, -1 if not. */
-static int
-send_reply (client_connection *connection, const reply_header *reply)
-{
- /* Check if the reply fits in the buffer. */
- if ((size_t) (connection->write_end - connection->write_ptr) < reply->size)
- {
- error (0, 0, _("buffer overflow"));
- return -1;
- }
-
- /* Copy reply to buffer, and adjust write pointer. */
- memcpy (connection->write_ptr, reply, reply->size);
- connection->write_ptr += reply->size;
-
- return 0;
-}
-
-
-static int
-do_setutent (client_connection *connection)
-{
- setutent_request *request;
- setutent_reply reply;
-
- /* The request size varies, so don't check it. */
- request = (setutent_request *)connection->read_base;
-
- /* Initialize reply. */
- reply.header.version = UTMPD_VERSION;
- reply.header.size = sizeof (setutent_reply);
- reply.header.type = UTMPD_REQ_SETUTENT;
-
- /* Select database. */
- if (!strncmp (request->file, _PATH_UTMP,
- request->header.size - sizeof (setutent_request)))
- connection->database = utmp_db;
- else
- {
- errno = EINVAL;
- goto return_error;
- }
-
- /* Initialize position pointer. */
- connection->position = 0;
-
-#if _HAVE_UT_TYPE - 0
- /* Make sure the entry won't match. */
- connection->last_entry.ut_type = -1;
-#endif
-
- reply.errnum = 0;
- reply.result = 0;
- return send_reply (connection, &reply.header);
-
-return_error:
- reply.errnum = errno;
- reply.result = -1;
- return send_reply (connection, &reply.header);
-}
-
-
-static int
-do_getutent (client_connection *connection)
-{
- getutent_request *request;
- getutent_reply reply;
-
- request = (getutent_request *)connection->read_base;
- if (request->header.size != sizeof (getutent_request))
- {
- warning (EINVAL, "invalid request size");
- return -1;
- }
-
- /* Initialize reply. */
- reply.header.version = UTMPD_VERSION;
- reply.header.size = sizeof (getutent_reply);
- reply.header.type = UTMPD_REQ_GETUTENT;
-
- if (connection->database == NULL || connection->position == -1)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- /* Make sure we're in synch with the ordinary file. */
- if (synchronize_database (connection->database) < 0)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- /* Read the next entry from the database. */
- if (read_entry (connection->database, connection->position,
- &connection->last_entry) < 0)
- {
- connection->position = -1;
- errno = ESRCH;
- goto return_error;
- }
-
- /* Update position pointer. */
- connection->position++;
-
- memcpy (&reply.entry, &connection->last_entry, sizeof (struct utmp));
- reply.errnum = 0;
- reply.result = 0;
- return send_reply (connection, (reply_header *)&reply);
-
-return_error:
- memset (&reply.entry, 0, sizeof (struct utmp));
- reply.errnum = errno;
- reply.result = -1;
- return send_reply (connection, &reply.header);
-}
-
-
-static int
-do_endutent (client_connection *connection)
-{
- endutent_request *request;
- endutent_reply reply;
-
- request = (endutent_request *)connection->read_base;
- if (request->header.size != sizeof (endutent_request))
- {
- warning (EINVAL, "invalid request size");
- return -1;
- }
-
- /* Deselect database. */
- connection->database = NULL;
-
- /* Formulate reply. */
- reply.header.version = UTMPD_VERSION;
- reply.header.size = sizeof (endutent_reply);
- reply.header.type = UTMPD_REQ_ENDUTENT;
- reply.errnum = 0;
- reply.result = 0;
-
- return send_reply (connection, &reply.header);
-}
-
-
-static int
-do_getutline (client_connection *connection)
-{
- getutline_request *request;
- getutline_reply reply;
-
- request = (getutline_request *)connection->read_base;
- if (request->header.size != sizeof (getutline_request))
- {
- warning (EINVAL, "invalid request size");
- return -1;
- }
-
- /* Initialize reply. */
- reply.header.version = UTMPD_VERSION;
- reply.header.size = sizeof (getutline_reply);
- reply.header.type = UTMPD_REQ_GETUTLINE;
-
- if (connection->database == NULL || connection->position == -1)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- /* Make sure we're in synch with the ordinary file. */
- if (synchronize_database (connection->database) < 0)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- while (1)
- {
- /* Read the next entry. */
- if (read_entry (connection->database, connection->position,
- &connection->last_entry) < 0)
- {
- connection->position = -1;
- errno = ESRCH;
- goto return_error;
- }
- connection->position++;
-
- /* Stop if we found a user or login entry. */
- if (
-#if _HAVE_UT_TYPE - 0
- (connection->last_entry.ut_type == USER_PROCESS
- || connection->last_entry.ut_type == LOGIN_PROCESS)
- &&
-#endif
- !strncmp (request->line.ut_line, connection->last_entry.ut_line,
- sizeof request->line.ut_line))
- break;
- }
-
- memcpy (&reply.entry, &connection->last_entry, sizeof (struct utmp));
- reply.errnum = 0;
- reply.result = 0;
- return send_reply (connection, &reply.header);
-
-return_error:
- memset (&reply.entry, 0, sizeof (struct utmp));
- reply.errnum = errno;
- reply.result = -1;
- return send_reply (connection, &reply.header);
-}
-
-
-static int
-do_getutid (client_connection *connection)
-{
- getutid_request *request;
- getutid_reply reply;
-
- request = (getutid_request *)connection->read_base;
- if (request->header.size != sizeof (getutid_request))
- {
- warning (EINVAL, "invalid request size");
- return -1;
- }
-
- /* Initialize reply. */
- reply.header.version = UTMPD_VERSION;
- reply.header.size = sizeof (getutid_reply);
- reply.header.type = UTMPD_REQ_GETUTID;
-
- if (connection->database == NULL || connection->position == -1)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- /* Make sure we're in synch with the ordinary file. */
- if (synchronize_database (connection->database) < 0)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- if (internal_getut_r (connection, &request->id,
- &connection->last_entry) < 0)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- reply.errnum = 0;
- reply.result = 0;
- memcpy (&reply.entry, &connection->last_entry, sizeof (struct utmp));
- return send_reply (connection, &reply.header);
-
-return_error:
- memset (&reply.entry, 0, sizeof (struct utmp));
- reply.errnum = errno;
- reply.result = -1;
- return send_reply (connection, &reply.header);
-}
-
-
-static int
-do_pututline (client_connection *connection)
-{
- pututline_request *request;
- pututline_reply reply;
- struct utmp buffer;
- int found;
-
- request = (pututline_request *)connection->read_base;
- if (request->header.size != sizeof (pututline_request))
- {
- warning (EINVAL, "invalid request size");
- return -1;
- }
-
- /* Initialize reply. */
- reply.header.version = UTMPD_VERSION;
- reply.header.size = sizeof (pututline_reply);
- reply.header.type = UTMPD_REQ_PUTUTLINE;
-
- if (!(connection->access & W_OK))
- {
- errno = EPERM;
- goto return_error;
- }
-
- if (connection->database == NULL)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- /* Make sure we're in synch with the ordinary file. */
- if (synchronize_database (connection->database) < 0)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- /* Find the correct place to insert the data. */
- if (connection->position > 0
- && (
-#if _HAVE_UT_TYPE - 0
- (connection->last_entry.ut_type == request->utmp.ut_type
- && (connection->last_entry.ut_type == RUN_LVL
- || connection->last_entry.ut_type == BOOT_TIME
- || connection->last_entry.ut_type == OLD_TIME
- || connection->last_entry.ut_type == NEW_TIME))
- ||
-#endif
- proc_utmp_eq (&connection->last_entry, &request->utmp)))
- found = 1;
- else
- found = internal_getut_r (connection, &request->utmp, &buffer);
-
- if (found < 0)
- {
- /* We append the next entry. */
- connection->position =
- append_entry (connection->database, &request->utmp);
- if (connection->position < 0)
- goto return_error;
- }
- else
- {
- /* We replace the just read entry. */
- connection->position--;
- if (write_entry (connection->database, connection->position,
- &request->utmp) < 0)
- goto return_error;
- }
-
- /* Write the entry to the compatibility file. */
- write_old_entry (connection->database, connection->position, &request->utmp);
-
- /* Update position pointer. */
- connection->position++;
-
- reply.errnum = 0;
- reply.result = 0;
- return send_reply (connection, &reply.header);
-
-return_error:
- reply.errnum = errno;
- reply.result = -1;
- return send_reply (connection, &reply.header);
-}
-
-
-static int
-do_updwtmp (client_connection *connection)
-{
- updwtmp_request *request;
- updwtmp_reply reply;
- utmp_database *database;
-
- /* The request size varies, so don't check it. */
- request = (updwtmp_request *)connection->read_base;
-
- /* Initialize reply. */
- reply.header.version = UTMPD_VERSION;
- reply.header.size = sizeof (updwtmp_reply);
- reply.header.type = UTMPD_REQ_UPDWTMP;
-
- if (!(connection->access & W_OK))
- {
- errno = EPERM;
- goto return_error;
- }
-
- /* Select database. */
- if (!strncmp (request->file, _PATH_UTMP,
- request->header.size - sizeof (updwtmp_request)))
- database = utmp_db;
- else
- {
- errno = EINVAL;
- goto return_error;
- }
-
- /* Make sure we're in synch with the ordinary file. */
- if (synchronize_database (database) < 0)
- {
- errno = ESRCH;
- goto return_error;
- }
-
- /* Append the entry. */
- if (append_entry (database, &request->utmp) < 0)
- goto return_error;
-
- reply.errnum = 0;
- reply.result = 0;
- return send_reply (connection, &reply.header);
-
-return_error:
- reply.errnum = errno;
- reply.result = -1;
- return send_reply (connection, &reply.header);
-}
-
-
-/* This function is identical to the one in login/utmp_file.c. */
-int
-proc_utmp_eq (const struct utmp *entry, const struct utmp *match)
-{
- return
- (
-#if _HAVE_UT_TYPE - 0
- (entry->ut_type == INIT_PROCESS
- || entry->ut_type == LOGIN_PROCESS
- || entry->ut_type == USER_PROCESS
- || entry->ut_type == DEAD_PROCESS)
- &&
- (match->ut_type == INIT_PROCESS
- || match->ut_type == LOGIN_PROCESS
- || match->ut_type == USER_PROCESS
- || match->ut_type == DEAD_PROCESS)
- &&
-#endif
-#if _HAVE_UT_ID - 0
- (entry->ut_id[0] && match->ut_id[0]
- ? strncmp (entry->ut_id, match->ut_id, sizeof match->ut_id) == 0
- : strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0)
-#else
- strncmp (entry->ut_line, match->ut_line, sizeof match->ut_line) == 0
-#endif
- );
-}
-
-
-/* This function is derived from the one in login/utmp_file.c. */
-static int
-internal_getut_r (client_connection *connection,
- const struct utmp *id, struct utmp *buffer)
-{
-#if _HAVE_UT_TYPE - 0
- if (id->ut_type == RUN_LVL || id->ut_type == BOOT_TIME
- || id->ut_type == OLD_TIME || id->ut_type == NEW_TIME)
- {
- /* Search for next entry with type RUN_LVL, BOOT_TIME,
- OLD_TIME, or NEW_TIME. */
-
- while (1)
- {
- /* Read the next entry. */
- if (read_entry (connection->database, connection->position,
- buffer) < 0)
- {
- connection->position = -1;
- return -1;
- }
- connection->position++;
-
- if (id->ut_type == buffer->ut_type)
- break;
- }
- }
- else
-#endif /* _HAVE_UT_TYPE */
- {
- /* Search for the next entry with the specified ID and with type
- INIT_PROCESS, LOGIN_PROCESS, USER_PROCESS, or DEAD_PROCESS. */
-
- while (1)
- {
- /* Read the next entry. */
- if (read_entry (connection->database, connection->position,
- buffer) < 0)
- {
- connection->position = -1;
- return -1;
- }
- connection->position++;
-
- if (proc_utmp_eq (buffer, id))
- break;
- }
- }
-
- return 0;
-}
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