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git.ipfire.org Git - thirdparty/sarg.git/blob - exclude.c
2 * SARG Squid Analysis Report Generator http://sarg.sourceforge.net
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11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
27 #include "include/conf.h"
28 #include "include/defs.h"
33 unsigned long int address
;
34 //! The mask to match the address of the URL.
35 unsigned long int mask
;
41 unsigned short int address
[8];
42 //! The number of bits in the prefix.
48 //! The URL to match without any leading wildcard.
50 //! The number of dots in the url if a wildcard is present or -1 if the address is complete (no wildcard)
54 static struct hostip4struct
*exclude_ip4
=NULL
;
55 static int num_exclude_ip4
=0;
56 static struct hostip6struct
*exclude_ip6
=NULL
;
57 static int num_exclude_ip6
=0;
58 static struct hostnamestruct
*exclude_name
=NULL
;
59 static int num_exclude_name
=0;
60 static int ip4allocated
=0;
61 static int ip6allocated
=0;
62 static int nameallocated
=0;
64 static char *excludeuser
=NULL
;
67 Store a IPv4 address to exclude from the reported URL.
69 \param addr The 4 char of the address.
70 \param nbits The number of bits to keep in the prefix.
72 static void store_exclude_ip4(unsigned char *addr
,int nbits
)
76 if (num_exclude_ip4
>=ip4allocated
) {
77 struct hostip4struct
*temp
;
80 temp
=realloc(exclude_ip4
,ip4allocated
*sizeof(*temp
));
82 debuga(_("Not enough memory to store the exlcluded IP addresses\n"));
87 exclude_ip4
[num_exclude_ip4
].address
=0UL;
89 exclude_ip4
[num_exclude_ip4
].address
=(exclude_ip4
[num_exclude_ip4
].address
<<8) | (unsigned char)(addr
[i
] & 0xFFU
);
90 exclude_ip4
[num_exclude_ip4
].mask
=(0xFFFFFFFFUL
<< (32-nbits
));
95 Store a IPv6 address to exclude from the reported URL.
97 \param addr The 8 short int of the address.
98 \param nbits The number of bits to keep in the prefix.
100 static void store_exclude_ip6(unsigned short *addr
,int nbits
)
104 if (num_exclude_ip6
>=ip6allocated
) {
105 struct hostip6struct
*temp
;
108 temp
=realloc(exclude_ip6
,ip6allocated
*sizeof(*temp
));
110 debuga(_("Not enough memory to store the exlcluded IP addresses\n"));
115 for (i
=0 ; i
<8 ; i
++)
116 exclude_ip6
[num_exclude_ip6
].address
[i
]=addr
[i
];
117 exclude_ip6
[num_exclude_ip6
].nbits
=nbits
;
122 Store a host name to exclude from the report.
124 \param url The host name to exclude.
126 static void store_exclude_url(const char *url
,const char *next
)
132 struct hostnamestruct
*item
;
138 for (i
=0 ; i
<length
; i
++)
141 } else if (url
[i
]=='.') {
149 if (start
>=length
|| firstdot
) return;
155 if (num_exclude_name
>=nameallocated
) {
156 struct hostnamestruct
*temp
;
159 temp
=realloc(exclude_name
,nameallocated
*sizeof(*temp
));
161 debuga(_("Not enough memory to store the excluded URLs\n"));
167 item
=exclude_name
+num_exclude_name
;
169 item
->url
=malloc(length
+1);
171 debuga(_("Not enough memory to store the excluded URLs\n"));
174 safe_strcpy(item
->url
,url
,length
+1);
175 item
->ndots
=(ndots
>0) ? ndots
: -1;
179 Read the file listing the host to exclude from the report.
181 \param hexfile The name of the file.
182 \param debug \c True to print debug information.
184 void gethexclude(const char *hexfile
, int debug
)
190 unsigned char ipv4
[4];
191 unsigned short int ipv6
[8];
195 if(access(hexfile
, R_OK
) != 0) {
196 debuga(_("Cannot open exclude_hosts file: %s - %s\n"),hexfile
,strerror(errno
));
200 debuga(_("Loading exclude host file from: %s\n"),hexfile
);
202 if ((fp_ex
= fopen(hexfile
, "r")) == NULL
) {
203 debuga(_("(gethexclude) Cannot open file %s - %s\n"),hexfile
,strerror(errno
));
207 while(fgets(buf
,sizeof(buf
),fp_ex
)!=NULL
){
212 type
=extract_address_mask(buf
,&name
,ipv4
,ipv6
,&nbits
,&next
);
214 debuga(_("While reading \"%s\"\n"),hexfile
);
219 store_exclude_url(name
,next
);
220 } else if (type
==2) {
221 store_exclude_ip4(ipv4
,nbits
);
222 } else if (type
==3) {
223 store_exclude_ip6(ipv6
,nbits
);
232 Check if the URL is excluded as per the host exclusion list.
234 \param url The URL to check.
236 \retval 1 Keep the URL.
237 \retval 0 Exclude the URL.
239 int vhexclude(const char *url
)
245 unsigned char ipv4
[4];
246 unsigned short int ipv6
[8];
247 unsigned long int addr4
;
251 type
=extract_address_mask(url
,&name
,ipv4
,ipv6
,NULL
,NULL
);
253 if (exclude_name
== NULL
) return(1);
255 for (length
=0 ; (unsigned char)name
[length
]>' ' && name
[length
]!=':' && name
[length
]!='/' && name
[length
]!='?' ; length
++)
256 if (name
[length
]=='.') {
258 We store the position of each dots of the URL to match it against any
259 wildcard in the excluded list. The size of dotpos is big enough for the most
260 ambitious URL but we have a safety mechanism that shift the positions should there be too
261 many dots in the URL.
263 if (ndots
<sizeof(dotpos
)/sizeof(dotpos
[0]))
264 dotpos
[ndots
++]=length
+1;
266 for (j
=1 ; j
<ndots
; j
++) dotpos
[j
-1]=dotpos
[j
];
267 dotpos
[ndots
-1]=length
+1;
271 for (i
=0 ; i
<num_exclude_name
; i
++) {
272 if (exclude_name
[i
].ndots
>0) {
273 const char *wurl
=name
;
275 if (exclude_name
[i
].ndots
<=ndots
) {
276 wurl
+=dotpos
[ndots
-exclude_name
[i
].ndots
];
277 len
-=dotpos
[ndots
-exclude_name
[i
].ndots
];
279 if (strncmp(exclude_name
[i
].url
,wurl
,len
)==0 && exclude_name
[i
].url
[len
]=='\0') return(0);
281 if (strncmp(exclude_name
[i
].url
,url
,length
)==0 && exclude_name
[i
].url
[length
]=='\0') return(0);
285 } else if (type
==2) {
286 if (exclude_ip4
== NULL
) return(1);
288 for (i
=0 ; i
<4 ; i
++) addr4
=(addr4
<< 8) | ipv4
[i
];
289 for (i
=0 ; i
<num_exclude_ip4
; i
++) {
290 if (((exclude_ip4
[i
].address
^ addr4
) & exclude_ip4
[i
].mask
)==0) return(0);
292 } else if (type
==3) {
293 if (exclude_ip6
== NULL
) return(1);
294 for (i
=0 ; i
<num_exclude_ip6
; i
++) {
295 length
=exclude_ip6
[i
].nbits
;
296 for (j
=length
/16-1 ; j
>=0 && ipv6
[j
]==exclude_ip6
[i
].address
[j
] ; j
--);
299 if (j
>=8 || length
%16==0 || ((ipv6
[j
] ^ exclude_ip6
[i
].address
[j
]) & (0xFFFF<<(length
-j
*16)))==0)
307 void getuexclude(const char *uexfile
, int debug
)
314 debuga(_("Loading exclude file from: %s\n"),uexfile
);
316 if ((fp_ex
= fopen(uexfile
, "r")) == NULL
) {
317 debuga(_("(gethexclude) Cannot open file %s - %s\n"),uexfile
,strerror(errno
));
321 if (fseek(fp_ex
, 0, SEEK_END
)==-1) {
322 debuga(_("Failed to move till the end of the excluded users file %s: %s\n"),uexfile
,strerror(errno
));
327 debuga(_("Cannot get the size of file %s\n"),uexfile
);
331 if (fseek(fp_ex
, 0, SEEK_SET
)==-1) {
332 debuga(_("Failed to rewind the excluded users file %s: %s\n"),uexfile
,strerror(errno
));
336 if((excludeuser
=(char *) malloc(nreg
))==NULL
){
337 debuga(_("malloc error (%ld bytes required)\n"),nreg
);
341 bzero(excludeuser
,nreg
);
343 while(fgets(buf
,sizeof(buf
),fp_ex
)!=NULL
){
344 if(strchr(buf
,'#') != NULL
)
347 strcat(excludeuser
,buf
);
348 strcat(excludeuser
," ");
351 strcat(excludeuser
,"*END* ");
358 int vuexclude(const char *user
)
366 while ((wuser
=strstr(wuser
,user
))!=NULL
) {
367 if (wuser
[len
]==' ') return(0);
375 bool is_indexonly(void)
377 if (excludeuser
==NULL
) return(false);
378 return(strstr(excludeuser
,"indexonly") != NULL
);
381 void free_exclude(void)
391 for (i
=0 ; i
<num_exclude_name
; i
++)
392 if (exclude_name
[i
].url
) free(exclude_name
[i
].url
);