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7179962a | 1 | /* |
7179962a | 2 | * SARG Squid Analysis Report Generator http://sarg.sourceforge.net |
ac422f9b | 3 | * 1998, 2010 |
7179962a PO |
4 | * |
5 | * SARG donations: | |
6 | * please look at http://sarg.sourceforge.net/donations.php | |
ac422f9b FM |
7 | * Support: |
8 | * http://sourceforge.net/projects/sarg/forums/forum/363374 | |
7179962a PO |
9 | * --------------------------------------------------------------------- |
10 | * | |
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. | |
15 | * | |
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. | |
20 | * | |
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. | |
24 | * | |
25 | */ | |
26 | ||
27 | #include "include/conf.h" | |
28 | #include "include/defs.h" | |
29 | ||
965c4a6f FM |
30 | #ifdef HAVE_LDAP_H |
31 | #define LDAP_DEPRECATED 1 | |
32 | ||
7179962a PO |
33 | #include <ldap.h> |
34 | #include <ldap_cdefs.h> | |
35 | #include <ldap_features.h> | |
965c4a6f | 36 | #endif //HAVE_LDAP_H |
7179962a | 37 | |
965c4a6f FM |
38 | enum UserTabEnum |
39 | { | |
9bd92830 FM |
40 | //! Users matched against the ::UserTabFile file. |
41 | UTT_File, | |
42 | //! Users matched agains a LDAP. | |
43 | UTT_Ldap, | |
44 | //! No user matching performed. | |
45 | UTT_None | |
965c4a6f FM |
46 | }; |
47 | ||
48 | enum UserTabEnum which_usertab=UTT_None; | |
7179962a | 49 | |
965c4a6f | 50 | static char *userfile=NULL; |
7179962a | 51 | |
965c4a6f FM |
52 | #ifdef HAVE_LDAP_H |
53 | static LDAP *ldap_handle=NULL; | |
54 | #endif //HAVE_LDAP_H | |
55 | ||
56 | static void init_file_usertab(const char *UserTabFile) | |
57 | { | |
9bd92830 FM |
58 | FILE *fp_usr; |
59 | long int nreg; | |
60 | char buf[MAXLEN]; | |
61 | int z1, z2; | |
965c4a6f | 62 | |
9bd92830 FM |
63 | if((fp_usr=fopen(UserTabFile,"r"))==NULL) { |
64 | debuga(_("(usertab) Cannot open file %s - %s\n"),UserTabFile,strerror(errno)); | |
65 | exit(EXIT_FAILURE); | |
66 | } | |
67 | if (fseek(fp_usr, 0, SEEK_END)==-1) { | |
68 | debuga(_("Failed to move till the end of the usertab file %s: %s\n"),UserTabFile,strerror(errno)); | |
69 | exit(EXIT_FAILURE); | |
70 | } | |
71 | nreg = ftell(fp_usr); | |
72 | if (nreg<0) { | |
73 | debuga(_("Cannot get the size of file %s"),UserTabFile); | |
74 | exit(EXIT_FAILURE); | |
75 | } | |
76 | nreg += 100; | |
77 | if (fseek(fp_usr, 0, SEEK_SET)==-1) { | |
78 | debuga(_("Failed to rewind the usertab file %s: %s\n"),UserTabFile,strerror(errno)); | |
79 | exit(EXIT_FAILURE); | |
80 | } | |
81 | if((userfile=(char *) malloc(nreg))==NULL){ | |
82 | debuga(_("ERROR: Cannot load. Memory fault")); | |
83 | exit(EXIT_FAILURE); | |
84 | } | |
85 | userfile[0]='\t'; | |
86 | z2=1; | |
87 | while(fgets(buf,sizeof(buf),fp_usr)!=NULL) { | |
88 | if (buf[0]=='#') continue; | |
89 | fixendofline(buf); | |
90 | z1=0; | |
91 | while(buf[z1] && (unsigned char)buf[z1]>' ') { | |
92 | if (z2+3>=nreg) { //need at least 3 additional bytes for the minimum string "\n\t\0" | |
93 | debuga(_("The list of the users is too long in your %s file.\n"),UserTabFile); | |
94 | exit(EXIT_FAILURE); | |
95 | } | |
96 | userfile[z2++]=buf[z1++]; | |
97 | } | |
98 | while(buf[z1] && (unsigned char)buf[z1]<=' ') z1++; | |
99 | userfile[z2++]='\n'; | |
100 | while(buf[z1] && (unsigned char)buf[z1]>=' ') { | |
101 | if (z2+2>=nreg) { //need at least 2 additional bytes for "\t\0" | |
102 | debuga(_("The list of the users is too long in your %s file.\n"),UserTabFile); | |
103 | exit(EXIT_FAILURE); | |
104 | } | |
105 | userfile[z2++]=buf[z1++]; | |
106 | } | |
107 | while(userfile[z2-1]==' ') z2--; | |
108 | userfile[z2++]='\t'; | |
109 | } | |
110 | userfile[z2]='\0'; | |
111 | fclose(fp_usr); | |
965c4a6f FM |
112 | } |
113 | ||
114 | static void get_usertab_name(const char *user,char *name,int namelen) | |
115 | { | |
9bd92830 FM |
116 | char warea[MAXLEN]; |
117 | char *str; | |
965c4a6f | 118 | |
9bd92830 FM |
119 | namelen--; |
120 | sprintf(warea,"\t%s\n",user); | |
121 | if((str=(char *) strstr(userfile,warea)) == (char *) NULL ) { | |
122 | strncpy(name,user,namelen); | |
123 | name[namelen]=0; | |
124 | } else { | |
125 | str=strchr(str+1,'\n'); | |
126 | str++; | |
127 | for(z1=0; *str != '\t' && z1<namelen ; z1++) { | |
128 | name[z1]=*str++; | |
129 | } | |
130 | name[z1]=0; | |
131 | } | |
965c4a6f FM |
132 | } |
133 | ||
134 | #ifdef HAVE_LDAP_H | |
135 | static void init_ldap_usertab(void) { | |
9bd92830 FM |
136 | /* Setting LDAP connection and initializing cache */ |
137 | ldap_handle = NULL; | |
138 | if ((ldap_handle = ldap_init(LDAPHost, LDAPPort)) == NULL) { | |
139 | debuga(_("Unable to connect to LDAP server %s on port %d\n"), LDAPHost, LDAPPort); | |
140 | exit(EXIT_FAILURE); | |
141 | } | |
7179962a | 142 | |
9bd92830 FM |
143 | int ldap_protocol_version = LDAPProtocolVersion; |
144 | if (ldap_set_option(ldap_handle, LDAP_OPT_PROTOCOL_VERSION, &ldap_protocol_version) != LDAP_SUCCESS) { | |
145 | debuga(_("Could not set LDAP protocol version %d\n"), ldap_protocol_version); | |
146 | exit(EXIT_FAILURE); | |
147 | } | |
7179962a | 148 | |
9bd92830 FM |
149 | /* Bind to the LDAP server. */ |
150 | int rc; | |
151 | rc = ldap_simple_bind_s( ldap_handle, LDAPBindDN, LDAPBindPW ); | |
152 | if ( rc != LDAP_SUCCESS ) { | |
153 | debuga(_("Cannot bind to LDAP server: %s\n"), ldap_err2string(rc)); | |
154 | exit(EXIT_FAILURE); | |
155 | } | |
965c4a6f | 156 | |
9bd92830 | 157 | /* Initializing cache */ |
7179962a | 158 | |
9bd92830 | 159 | init_cache(); |
7179962a PO |
160 | } |
161 | ||
965c4a6f FM |
162 | static void get_ldap_name(const char *userlogin,char *mappedname,int namelen) |
163 | { | |
9bd92830 FM |
164 | /* Start searching username in cache */ |
165 | // According to rfc2254 section 4, only *()\ and NUL must be escaped. This list is rather conservative ! | |
166 | const char strictchars[] = " ~!@^&(){}|<>?:;\"\'\\[]`,\r\n\0"; | |
167 | char filtersearch[256], *searched_in_cache; | |
168 | char searchloginname[3*MAX_USER_LEN]; | |
169 | char *attr, **vals; | |
170 | LDAPMessage *result, *e; | |
171 | BerElement *ber; | |
172 | int i; | |
1b048c43 | 173 | |
9bd92830 FM |
174 | for (i=0 ; i<sizeof(searchloginname)-1 && *userlogin ; userlogin++) { |
175 | if (strchr(strictchars,*userlogin)) { | |
176 | // escape character according to rfc2254 section 4 | |
177 | if (i+3>=sizeof(searchloginname)-1) break; | |
178 | i+=sprintf(searchloginname+i,"\\%02X",*userlogin); | |
179 | } else { | |
180 | searchloginname[i++]=*userlogin; | |
181 | } | |
182 | } | |
183 | searchloginname[i]='\0'; | |
965c4a6f | 184 | |
9bd92830 FM |
185 | if (!(searched_in_cache = search_in_cache(searchloginname))) { |
186 | snprintf(filtersearch, sizeof(filtersearch), LDAPFilterSearch, searchloginname, searchloginname, searchloginname, searchloginname, searchloginname); | |
965c4a6f | 187 | |
9bd92830 | 188 | /* Search record(s) in LDAP base */ |
965c4a6f | 189 | |
9bd92830 FM |
190 | int rc= ldap_search_s(ldap_handle, LDAPBaseSearch, LDAP_SCOPE_SUBTREE, filtersearch, NULL, 0, &result); |
191 | if ( rc != LDAP_SUCCESS ) { | |
192 | debuga(_("LDAP search failed: %s\n"), ldap_err2string(rc)); | |
193 | strncpy(mappedname,searchloginname,namelen-1); | |
194 | mappedname[namelen-1]='\0'; | |
195 | return; | |
196 | } | |
965c4a6f | 197 | |
9bd92830 FM |
198 | if (!(e = ldap_first_entry(ldap_handle, result))) |
199 | insert_to_cache(searchloginname, searchloginname); | |
200 | else | |
201 | for (attr = ldap_first_attribute(ldap_handle, e, &ber); attr != NULL; attr = ldap_next_attribute(ldap_handle, e, ber)) { | |
202 | if (!strcasecmp(attr, LDAPTargetAttr)) { | |
203 | if ((vals = (char **)ldap_get_values(ldap_handle, e, attr))!=NULL) { | |
204 | insert_to_cache(searchloginname, vals[0]); | |
205 | strncpy(mappedname, vals[0],namelen-1); | |
206 | mappedname[namelen-1]='\0'; | |
207 | ldap_memfree(vals); | |
208 | } | |
209 | ldap_memfree(attr); | |
210 | break; | |
211 | } | |
212 | ldap_memfree(attr); | |
213 | } | |
007905af | 214 | ldap_msgfree(result); |
9bd92830 FM |
215 | } else { |
216 | strncpy(mappedname, searched_in_cache,namelen-1); | |
217 | mappedname[namelen-1]='\0'; | |
218 | } | |
965c4a6f FM |
219 | } |
220 | #endif //HAVE_LDAP_H | |
221 | ||
222 | void init_usertab(const char *UserTabFile) | |
223 | { | |
9bd92830 FM |
224 | if (strcmp(UserTabFile, "ldap") == 0) { |
225 | if(debug) | |
226 | debuga(_("Loading User table: %s\n"),UserTabFile); | |
965c4a6f | 227 | #ifdef HAVE_LDAP_H |
9bd92830 FM |
228 | which_usertab=UTT_Ldap; |
229 | init_ldap_usertab(); | |
965c4a6f | 230 | #else |
9bd92830 FM |
231 | debuga(_("LDAP module not compiled in sarg\n")); |
232 | exit(EXIT_FAILURE); | |
965c4a6f | 233 | #endif //HAVE_LDAP_H |
9bd92830 FM |
234 | } else if (UserTabFile[0] != '\0') { |
235 | if(debug) | |
236 | debuga(_("Loading User table: %s\n"),UserTabFile); | |
237 | which_usertab=UTT_File; | |
238 | init_file_usertab(UserTabFile); | |
239 | } else { | |
240 | which_usertab=UTT_None; | |
241 | } | |
965c4a6f FM |
242 | } |
243 | ||
244 | void user_find(char *mappedname, int namelen, const char *userlogin) | |
245 | { | |
9bd92830 FM |
246 | if (which_usertab==UTT_File) { |
247 | get_usertab_name(userlogin,mappedname,namelen); | |
248 | } | |
965c4a6f | 249 | #ifdef HAVE_LDAP_H |
9bd92830 FM |
250 | else if (which_usertab==UTT_Ldap) { |
251 | get_ldap_name(userlogin,mappedname,namelen); | |
252 | } | |
965c4a6f | 253 | #endif //HAVE_LDAP_H |
9bd92830 FM |
254 | else { |
255 | strncpy(mappedname,userlogin,namelen-1); | |
256 | mappedname[namelen-1]='\0'; | |
257 | } | |
7179962a PO |
258 | } |
259 | ||
965c4a6f FM |
260 | void close_usertab(void) |
261 | { | |
262 | #ifdef HAVE_LDAP_H | |
9bd92830 FM |
263 | if (ldap_handle) { |
264 | destroy_cache(); | |
265 | ldap_unbind(ldap_handle); | |
266 | ldap_handle=NULL; | |
267 | } | |
965c4a6f | 268 | #endif //HAVE_LDAP_H |
9bd92830 FM |
269 | if(userfile) { |
270 | free(userfile); | |
271 | userfile=NULL; | |
272 | } | |
7179962a PO |
273 | } |
274 |