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3ca8e68f58e7ffeac5b8b969ef26bffc2069f113
android_external_rsync/loadparm.c
David Dykstra 3ca8e68f58 Added "strict modes" option. When set false (default is true), it allows 
the secrets file to be readable by other users.  Added to support the Windows
port under cygwin.  Problem reported by Martin Krumpolec krumpo@pobox.sk
1999-02-09 19:27:15 +00:00

760 lines
22 KiB
C
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/* This is based on loadparm.c from Samba, written by Andrew Tridgell
and Karl Auer */
/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* Load parameters.
*
* This module provides suitable callback functions for the params
* module. It builds the internal table of service details which is
* then used by the rest of the server.
*
* To add a parameter:
*
* 1) add it to the global or service structure definition
* 2) add it to the parm_table
* 3) add it to the list of available functions (eg: using FN_GLOBAL_STRING())
* 4) If it's a global then initialise it in init_globals. If a local
* (ie. service) parameter then initialise it in the sDefault structure
*
*
* Notes:
* The configuration file is processed sequentially for speed. It is NOT
* accessed randomly as happens in 'real' Windows. For this reason, there
* is a fair bit of sequence-dependent code here - ie., code which assumes
* that certain things happen before others. In particular, the code which
* happens at the boundary between sections is delicately poised, so be
* careful!
*
*/
#include "rsync.h"
#define PTR_DIFF(p1,p2) ((ptrdiff_t)(((char *)(p1)) - (char *)(p2)))
#define strequal(a,b) (strcasecmp(a,b)==0)
#define BOOLSTR(b) ((b) ? "Yes" : "No")
typedef char pstring[1024];
#define pstrcpy(a,b) strlcpy(a,b,sizeof(pstring))
/* the following are used by loadparm for option lists */
typedef enum
{
P_BOOL,P_BOOLREV,P_CHAR,P_INTEGER,P_OCTAL,
P_STRING,P_GSTRING,P_ENUM,P_SEP
} parm_type;
typedef enum
{
P_LOCAL,P_GLOBAL,P_SEPARATOR,P_NONE
} parm_class;
struct enum_list {
int value;
char *name;
};
struct parm_struct
{
char *label;
parm_type type;
parm_class class;
void *ptr;
struct enum_list *enum_list;
unsigned flags;
};
static BOOL bLoaded = False;
#ifndef GLOBAL_NAME
#define GLOBAL_NAME "global"
#endif
/* some helpful bits */
#define pSERVICE(i) ServicePtrs[i]
#define iSERVICE(i) (*pSERVICE(i))
#define LP_SNUM_OK(iService) (((iService) >= 0) && ((iService) < iNumServices))
/*
* This structure describes global (ie., server-wide) parameters.
*/
typedef struct
{
char *motd_file;
char *log_file;
char *pid_file;
int syslog_facility;
char *socket_options;
} global;
static global Globals;
/*
* This structure describes a single service.
*/
typedef struct
{
char *name;
char *path;
char *comment;
char *lock_file;
BOOL read_only;
BOOL list;
BOOL use_chroot;
BOOL transfer_logging;
char *uid;
char *gid;
char *hosts_allow;
char *hosts_deny;
char *auth_users;
char *secrets_file;
BOOL strict_modes;
char *exclude;
char *exclude_from;
char *include;
char *include_from;
char *log_format;
char *refuse_options;
char *dont_compress;
int timeout;
int max_connections;
} service;
/* This is a default service used to prime a services structure */
static service sDefault =
{
NULL, /* name */
NULL, /* path */
NULL, /* comment */
DEFAULT_LOCK_FILE, /* lock file */
True, /* read only */
True, /* list */
True, /* use chroot */
False, /* transfer logging */
"nobody",/* uid */
"nobody",/* gid */
NULL, /* hosts allow */
NULL, /* hosts deny */
NULL, /* auth users */
NULL, /* secrets file */
True, /* strict modes */
NULL, /* exclude */
NULL, /* exclude from */
NULL, /* include */
NULL, /* include from */
"%o %h [%a] %m (%u) %f %l", /* log format */
NULL, /* refuse options */
"*.gz *.tgz *.zip *.z *.rpm *.deb", /* dont compress */
0, /* timeout */
0 /* max connections */
};
/* local variables */
static service **ServicePtrs = NULL;
static int iNumServices = 0;
static int iServiceIndex = 0;
static BOOL bInGlobalSection = True;
#define NUMPARAMETERS (sizeof(parm_table) / sizeof(struct parm_struct))
static struct enum_list enum_facilities[] = {
#ifdef LOG_AUTH
{ LOG_AUTH, "auth" },
#endif
#ifdef LOG_AUTHPRIV
{ LOG_AUTHPRIV, "authpriv" },
#endif
#ifdef LOG_CRON
{ LOG_CRON, "cron" },
#endif
#ifdef LOG_DAEMON
{ LOG_DAEMON, "daemon" },
#endif
#ifdef LOG_FTP
{ LOG_FTP, "ftp" },
#endif
#ifdef LOG_KERN
{ LOG_KERN, "kern" },
#endif
#ifdef LOG_LPR
{ LOG_LPR, "lpr" },
#endif
#ifdef LOG_MAIL
{ LOG_MAIL, "mail" },
#endif
#ifdef LOG_NEWS
{ LOG_NEWS, "news" },
#endif
#ifdef LOG_AUTH
{ LOG_AUTH, "security" },
#endif
#ifdef LOG_SYSLOG
{ LOG_SYSLOG, "syslog" },
#endif
#ifdef LOG_USER
{ LOG_USER, "user" },
#endif
#ifdef LOG_UUCP
{ LOG_UUCP, "uucp" },
#endif
#ifdef LOG_LOCAL0
{ LOG_LOCAL0, "local0" },
#endif
#ifdef LOG_LOCAL1
{ LOG_LOCAL1, "local1" },
#endif
#ifdef LOG_LOCAL2
{ LOG_LOCAL2, "local2" },
#endif
#ifdef LOG_LOCAL3
{ LOG_LOCAL3, "local3" },
#endif
#ifdef LOG_LOCAL4
{ LOG_LOCAL4, "local4" },
#endif
#ifdef LOG_LOCAL5
{ LOG_LOCAL5, "local5" },
#endif
#ifdef LOG_LOCAL6
{ LOG_LOCAL6, "local6" },
#endif
#ifdef LOG_LOCAL7
{ LOG_LOCAL7, "local7" },
#endif
{ -1, NULL }};
/* note that we do not initialise the defaults union - it is not allowed in ANSI C */
static struct parm_struct parm_table[] =
{
{"motd file", P_STRING, P_GLOBAL, &Globals.motd_file, NULL, 0},
{"syslog facility", P_ENUM, P_GLOBAL, &Globals.syslog_facility, enum_facilities,0},
{"socket options", P_STRING, P_GLOBAL, &Globals.socket_options,NULL, 0},
{"log file", P_STRING, P_GLOBAL, &Globals.log_file, NULL, 0},
{"pid file", P_STRING, P_GLOBAL, &Globals.pid_file, NULL, 0},
{"timeout", P_INTEGER, P_LOCAL, &sDefault.timeout, NULL, 0},
{"max connections", P_INTEGER, P_LOCAL, &sDefault.max_connections,NULL, 0},
{"name", P_STRING, P_LOCAL, &sDefault.name, NULL, 0},
{"comment", P_STRING, P_LOCAL, &sDefault.comment, NULL, 0},
{"lock file", P_STRING, P_LOCAL, &sDefault.lock_file, NULL, 0},
{"path", P_STRING, P_LOCAL, &sDefault.path, NULL, 0},
{"read only", P_BOOL, P_LOCAL, &sDefault.read_only, NULL, 0},
{"list", P_BOOL, P_LOCAL, &sDefault.list, NULL, 0},
{"use chroot", P_BOOL, P_LOCAL, &sDefault.use_chroot, NULL, 0},
{"uid", P_STRING, P_LOCAL, &sDefault.uid, NULL, 0},
{"gid", P_STRING, P_LOCAL, &sDefault.gid, NULL, 0},
{"hosts allow", P_STRING, P_LOCAL, &sDefault.hosts_allow, NULL, 0},
{"hosts deny", P_STRING, P_LOCAL, &sDefault.hosts_deny, NULL, 0},
{"auth users", P_STRING, P_LOCAL, &sDefault.auth_users, NULL, 0},
{"secrets file", P_STRING, P_LOCAL, &sDefault.secrets_file,NULL, 0},
{"strict modes", P_BOOL, P_LOCAL, &sDefault.strict_modes,NULL, 0},
{"exclude", P_STRING, P_LOCAL, &sDefault.exclude, NULL, 0},
{"exclude from", P_STRING, P_LOCAL, &sDefault.exclude_from,NULL, 0},
{"include", P_STRING, P_LOCAL, &sDefault.include, NULL, 0},
{"include from", P_STRING, P_LOCAL, &sDefault.include_from,NULL, 0},
{"transfer logging", P_BOOL, P_LOCAL, &sDefault.transfer_logging,NULL,0},
{"log format", P_STRING, P_LOCAL, &sDefault.log_format, NULL, 0},
{"refuse options", P_STRING, P_LOCAL, &sDefault.refuse_options,NULL, 0},
{"dont compress", P_STRING, P_LOCAL, &sDefault.dont_compress,NULL, 0},
{NULL, P_BOOL, P_NONE, NULL, NULL, 0}
};
/***************************************************************************
Initialise the global parameter structure.
***************************************************************************/
static void init_globals(void)
{
memset(&Globals, 0, sizeof(Globals));
#ifdef LOG_DAEMON
Globals.syslog_facility = LOG_DAEMON;
#endif
}
/***************************************************************************
Initialise the sDefault parameter structure.
***************************************************************************/
static void init_locals(void)
{
}
/*
In this section all the functions that are used to access the
parameters from the rest of the program are defined
*/
#define FN_GLOBAL_STRING(fn_name,ptr) \
char *fn_name(void) {return(*(char **)(ptr) ? *(char **)(ptr) : "");}
#define FN_GLOBAL_BOOL(fn_name,ptr) \
BOOL fn_name(void) {return(*(BOOL *)(ptr));}
#define FN_GLOBAL_CHAR(fn_name,ptr) \
char fn_name(void) {return(*(char *)(ptr));}
#define FN_GLOBAL_INTEGER(fn_name,ptr) \
int fn_name(void) {return(*(int *)(ptr));}
#define FN_LOCAL_STRING(fn_name,val) \
char *fn_name(int i) {return((LP_SNUM_OK(i)&&pSERVICE(i)->val)?pSERVICE(i)->val : (sDefault.val?sDefault.val:""));}
#define FN_LOCAL_BOOL(fn_name,val) \
BOOL fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
#define FN_LOCAL_CHAR(fn_name,val) \
char fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
#define FN_LOCAL_INTEGER(fn_name,val) \
int fn_name(int i) {return(LP_SNUM_OK(i)? pSERVICE(i)->val : sDefault.val);}
FN_GLOBAL_STRING(lp_motd_file, &Globals.motd_file)
FN_GLOBAL_STRING(lp_log_file, &Globals.log_file)
FN_GLOBAL_STRING(lp_pid_file, &Globals.pid_file)
FN_GLOBAL_STRING(lp_socket_options, &Globals.socket_options)
FN_GLOBAL_INTEGER(lp_syslog_facility, &Globals.syslog_facility)
FN_LOCAL_STRING(lp_name, name)
FN_LOCAL_STRING(lp_comment, comment)
FN_LOCAL_STRING(lp_path, path)
FN_LOCAL_STRING(lp_lock_file, lock_file)
FN_LOCAL_BOOL(lp_read_only, read_only)
FN_LOCAL_BOOL(lp_list, list)
FN_LOCAL_BOOL(lp_use_chroot, use_chroot)
FN_LOCAL_BOOL(lp_transfer_logging, transfer_logging)
FN_LOCAL_STRING(lp_uid, uid)
FN_LOCAL_STRING(lp_gid, gid)
FN_LOCAL_STRING(lp_hosts_allow, hosts_allow)
FN_LOCAL_STRING(lp_hosts_deny, hosts_deny)
FN_LOCAL_STRING(lp_auth_users, auth_users)
FN_LOCAL_STRING(lp_secrets_file, secrets_file)
FN_LOCAL_BOOL(lp_strict_modes, strict_modes)
FN_LOCAL_STRING(lp_exclude, exclude)
FN_LOCAL_STRING(lp_exclude_from, exclude_from)
FN_LOCAL_STRING(lp_include, include)
FN_LOCAL_STRING(lp_include_from, include_from)
FN_LOCAL_STRING(lp_log_format, log_format)
FN_LOCAL_STRING(lp_refuse_options, refuse_options)
FN_LOCAL_STRING(lp_dont_compress, dont_compress)
FN_LOCAL_INTEGER(lp_timeout, timeout)
FN_LOCAL_INTEGER(lp_max_connections, max_connections)
/* local prototypes */
static int strwicmp( char *psz1, char *psz2 );
static int map_parameter( char *parmname);
static BOOL set_boolean( BOOL *pb, char *parmvalue );
static int getservicebyname(char *name, service *pserviceDest);
static void copy_service( service *pserviceDest,
service *pserviceSource);
static BOOL do_parameter(char *parmname, char *parmvalue);
static BOOL do_section(char *sectionname);
/***************************************************************************
initialise a service to the defaults
***************************************************************************/
static void init_service(service *pservice)
{
memset((char *)pservice,0,sizeof(service));
copy_service(pservice,&sDefault);
}
static void string_set(char **s, char *v)
{
if (!v) {
*s = NULL;
return;
}
*s = strdup(v);
if (!*s) exit_cleanup(RERR_MALLOC);
}
/***************************************************************************
add a new service to the services array initialising it with the given
service
***************************************************************************/
static int add_a_service(service *pservice, char *name)
{
int i;
service tservice;
int num_to_alloc = iNumServices+1;
tservice = *pservice;
/* it might already exist */
if (name)
{
i = getservicebyname(name,NULL);
if (i >= 0)
return(i);
}
i = iNumServices;
ServicePtrs = (service **)Realloc(ServicePtrs,sizeof(service *)*num_to_alloc);
if (ServicePtrs)
pSERVICE(iNumServices) = (service *)malloc(sizeof(service));
if (!ServicePtrs || !pSERVICE(iNumServices))
return(-1);
iNumServices++;
init_service(pSERVICE(i));
copy_service(pSERVICE(i),&tservice);
if (name)
string_set(&iSERVICE(i).name,name);
return(i);
}
/***************************************************************************
Do a case-insensitive, whitespace-ignoring string compare.
***************************************************************************/
static int strwicmp(char *psz1, char *psz2)
{
/* if BOTH strings are NULL, return TRUE, if ONE is NULL return */
/* appropriate value. */
if (psz1 == psz2)
return (0);
else
if (psz1 == NULL)
return (-1);
else
if (psz2 == NULL)
return (1);
/* sync the strings on first non-whitespace */
while (1)
{
while (isspace(*psz1))
psz1++;
while (isspace(*psz2))
psz2++;
if (toupper(*psz1) != toupper(*psz2) || *psz1 == '\0' || *psz2 == '\0')
break;
psz1++;
psz2++;
}
return (*psz1 - *psz2);
}
/***************************************************************************
Map a parameter's string representation to something we can use.
Returns False if the parameter string is not recognised, else TRUE.
***************************************************************************/
static int map_parameter(char *parmname)
{
int iIndex;
if (*parmname == '-')
return(-1);
for (iIndex = 0; parm_table[iIndex].label; iIndex++)
if (strwicmp(parm_table[iIndex].label, parmname) == 0)
return(iIndex);
rprintf(FERROR, "Unknown Parameter encountered: \"%s\"\n", parmname);
return(-1);
}
/***************************************************************************
Set a boolean variable from the text value stored in the passed string.
Returns True in success, False if the passed string does not correctly
represent a boolean.
***************************************************************************/
static BOOL set_boolean(BOOL *pb, char *parmvalue)
{
BOOL bRetval;
bRetval = True;
if (strwicmp(parmvalue, "yes") == 0 ||
strwicmp(parmvalue, "true") == 0 ||
strwicmp(parmvalue, "1") == 0)
*pb = True;
else
if (strwicmp(parmvalue, "no") == 0 ||
strwicmp(parmvalue, "False") == 0 ||
strwicmp(parmvalue, "0") == 0)
*pb = False;
else
{
rprintf(FERROR, "Badly formed boolean in configuration file: \"%s\".\n",
parmvalue);
bRetval = False;
}
return (bRetval);
}
/***************************************************************************
Find a service by name. Otherwise works like get_service.
***************************************************************************/
static int getservicebyname(char *name, service *pserviceDest)
{
int iService;
for (iService = iNumServices - 1; iService >= 0; iService--)
if (strwicmp(iSERVICE(iService).name, name) == 0)
{
if (pserviceDest != NULL)
copy_service(pserviceDest, pSERVICE(iService));
break;
}
return (iService);
}
/***************************************************************************
Copy a service structure to another
***************************************************************************/
static void copy_service(service *pserviceDest,
service *pserviceSource)
{
int i;
for (i=0;parm_table[i].label;i++)
if (parm_table[i].ptr && parm_table[i].class == P_LOCAL) {
void *def_ptr = parm_table[i].ptr;
void *src_ptr =
((char *)pserviceSource) + PTR_DIFF(def_ptr,&sDefault);
void *dest_ptr =
((char *)pserviceDest) + PTR_DIFF(def_ptr,&sDefault);
switch (parm_table[i].type)
{
case P_BOOL:
case P_BOOLREV:
*(BOOL *)dest_ptr = *(BOOL *)src_ptr;
break;
case P_INTEGER:
case P_ENUM:
case P_OCTAL:
*(int *)dest_ptr = *(int *)src_ptr;
break;
case P_CHAR:
*(char *)dest_ptr = *(char *)src_ptr;
break;
case P_STRING:
string_set(dest_ptr,*(char **)src_ptr);
break;
default:
break;
}
}
}
/***************************************************************************
Process a parameter for a particular service number. If snum < 0
then assume we are in the globals
***************************************************************************/
static BOOL lp_do_parameter(int snum, char *parmname, char *parmvalue)
{
int parmnum, i;
void *parm_ptr=NULL; /* where we are going to store the result */
void *def_ptr=NULL;
parmnum = map_parameter(parmname);
if (parmnum < 0)
{
rprintf(FERROR, "IGNORING unknown parameter \"%s\"\n", parmname);
return(True);
}
def_ptr = parm_table[parmnum].ptr;
/* we might point at a service, the default service or a global */
if (snum < 0) {
parm_ptr = def_ptr;
} else {
if (parm_table[parmnum].class == P_GLOBAL) {
rprintf(FERROR, "Global parameter %s found in service section!\n",parmname);
return(True);
}
parm_ptr = ((char *)pSERVICE(snum)) + PTR_DIFF(def_ptr,&sDefault);
}
/* now switch on the type of variable it is */
switch (parm_table[parmnum].type)
{
case P_BOOL:
set_boolean(parm_ptr,parmvalue);
break;
case P_BOOLREV:
set_boolean(parm_ptr,parmvalue);
*(BOOL *)parm_ptr = ! *(BOOL *)parm_ptr;
break;
case P_INTEGER:
*(int *)parm_ptr = atoi(parmvalue);
break;
case P_CHAR:
*(char *)parm_ptr = *parmvalue;
break;
case P_OCTAL:
sscanf(parmvalue,"%o",(int *)parm_ptr);
break;
case P_STRING:
string_set(parm_ptr,parmvalue);
break;
case P_GSTRING:
strlcpy((char *)parm_ptr,parmvalue,sizeof(pstring));
break;
case P_ENUM:
for (i=0;parm_table[parmnum].enum_list[i].name;i++) {
if (strequal(parmvalue, parm_table[parmnum].enum_list[i].name)) {
*(int *)parm_ptr = parm_table[parmnum].enum_list[i].value;
break;
}
}
if (!parm_table[parmnum].enum_list[i].name) {
if (atoi(parmvalue) > 0)
*(int *)parm_ptr = atoi(parmvalue);
}
break;
case P_SEP:
break;
}
return(True);
}
/***************************************************************************
Process a parameter.
***************************************************************************/
static BOOL do_parameter(char *parmname, char *parmvalue)
{
return lp_do_parameter(bInGlobalSection?-2:iServiceIndex, parmname, parmvalue);
}
/***************************************************************************
Process a new section (service). At this stage all sections are services.
Later we'll have special sections that permit server parameters to be set.
Returns True on success, False on failure.
***************************************************************************/
static BOOL do_section(char *sectionname)
{
BOOL bRetval;
BOOL isglobal = (strwicmp(sectionname, GLOBAL_NAME) == 0);
bRetval = False;
/* if we were in a global section then do the local inits */
if (bInGlobalSection && !isglobal)
init_locals();
/* if we've just struck a global section, note the fact. */
bInGlobalSection = isglobal;
/* check for multiple global sections */
if (bInGlobalSection)
{
return(True);
}
/* if we have a current service, tidy it up before moving on */
bRetval = True;
if (iServiceIndex >= 0)
bRetval = True;
/* if all is still well, move to the next record in the services array */
if (bRetval)
{
/* We put this here to avoid an odd message order if messages are */
/* issued by the post-processing of a previous section. */
if ((iServiceIndex=add_a_service(&sDefault,sectionname)) < 0)
{
rprintf(FERROR,"Failed to add a new service\n");
return(False);
}
}
return (bRetval);
}
/***************************************************************************
Load the services array from the services file. Return True on success,
False on failure.
***************************************************************************/
BOOL lp_load(char *pszFname, int globals_only)
{
pstring n2;
BOOL bRetval;
bRetval = False;
bInGlobalSection = True;
init_globals();
pstrcpy(n2,pszFname);
/* We get sections first, so have to start 'behind' to make up */
iServiceIndex = -1;
bRetval = pm_process(n2, globals_only?NULL:do_section, do_parameter);
bLoaded = True;
return (bRetval);
}
/***************************************************************************
return the max number of services
***************************************************************************/
int lp_numservices(void)
{
return(iNumServices);
}
/***************************************************************************
Return the number of the service with the given name, or -1 if it doesn't
exist. Note that this is a DIFFERENT ANIMAL from the internal function
getservicebyname()! This works ONLY if all services have been loaded, and
does not copy the found service.
***************************************************************************/
int lp_number(char *name)
{
int iService;
for (iService = iNumServices - 1; iService >= 0; iService--)
if (strequal(lp_name(iService), name))
break;
return (iService);
}
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