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83fff1aa6036f38a3d2daf6d809bd9c10d28fae6
android_external_rsync/loadparm.c
Andrew Tridgell 83fff1aa60 added "dont compress" option with the default setting of 
*.gz *.tgz *.zip *.z *.rpm *.deb
1998-11-20 22:26:29 +00:00

750 lines
21 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 BOOL int
#define False 0
#define True 1
#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 *lock_file;
char *log_file;
char *pid_file;
int syslog_facility;
int max_connections;
char *socket_options;
} global;
static global Globals;
/*
* This structure describes a single service.
*/
typedef struct
{
char *name;
char *path;
char *comment;
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;
char *exclude;
char *exclude_from;
char *log_format;
char *refuse_options;
char *dont_compress;
int timeout;
} service;
/* This is a default service used to prime a services structure */
static service sDefault =
{
NULL, /* name */
NULL, /* path */
NULL, /* comment */
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 */
NULL, /* exclude */
NULL, /* exclude from */
"%o %h [%a] %m (%u) %f %l", /* log format */
NULL, /* refuse options */
"*.gz *.tgz *.zip *.z *.rpm *.deb", /* dont compress */
0 /* timeout */
};
/* 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[] =
{
{"max connections", P_INTEGER, P_GLOBAL, &Globals.max_connections,NULL, 0},
{"motd file", P_STRING, P_GLOBAL, &Globals.motd_file, NULL, 0},
{"lock file", P_STRING, P_GLOBAL, &Globals.lock_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},
{"name", P_STRING, P_LOCAL, &sDefault.name, NULL, 0},
{"comment", P_STRING, P_LOCAL, &sDefault.comment, 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},
{"exclude", P_STRING, P_LOCAL, &sDefault.exclude, NULL, 0},
{"exclude from", P_STRING, P_LOCAL, &sDefault.exclude_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
Globals.lock_file = "/var/run/rsyncd.lock";
}
/***************************************************************************
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_lock_file, &Globals.lock_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_max_connections, &Globals.max_connections)
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_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_STRING(lp_exclude, exclude)
FN_LOCAL_STRING(lp_exclude_from, exclude_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)
/* 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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