1: /*
2: * Copyright (c) 2001,2002 Sebastien Petit <spe@bsdfr.org>
3: *
4: * Redistribution and use in source forms, with and without modification,
5: * are permitted provided that the following conditions are met:
6: * 1. Redistributions of source code must retain the above copyright notice,
7: * this list of conditions and the following disclaimer.
8: * 2. Redistributions in binary form must reproduce the above copyright notice,
9: * this list of conditions and the following disclaimer in the documentation
10: * and/or other materials provided with the distribution. Obviously, it
11: * would be nice if you gave credit where credit is due but requiring it
12: * would be too onerous.
13: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by Sebastien Petit.
16: * 4. Neither the name of its contributors may be used to endorse or promote
17: * products derived from this software without specific prior written
18: * permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: *
32: * $Id: vrrp_conf.c,v 1.1.1.1 2017/06/14 12:01:54 misho Exp $
33: */
34:
35: #include <errno.h>
36: #include "vrrp_conf.h"
37:
38: int
39: vrrp_conf_ident_option_arg(char *chaine, char *option, char *arg)
40: {
41: int i = 0;
42: char *ptr;
43:
44: while (isalpha(chaine[i]) && chaine[i] != 0) {
45: i++;
46: if (i > 1022) {
47: syslog(LOG_ERR, "a bad line was found in your configuration file (line > 1024 char), exiting...");
48: exit(-1);
49: }
50: }
51: if (!i) {
52: syslog(LOG_ERR, "a bad line was found in your configuration file: %s\n", chaine);
53: exit(-1);
54: }
55: strncpy(option, chaine, i);
56: option[i] = '\0';
57: while (chaine[i] != '=' && chaine[i] != 0) {
58: i++;
59: if (i > 1021) {
60: syslog(LOG_ERR, "a bad line was found in your configuration file (line > 1024 char), exiting...");
61: exit(-1);
62: }
63: }
64: i++;
65: while (chaine[i] == ' ' && chaine[i] != 0) {
66: i++;
67: if (i > 1021) {
68: syslog(LOG_ERR, "a bad line was found in your configuration file (line > 1024 char), exiting...");
69: exit(-1);
70: }
71: }
72: ptr = &chaine[i];
73: strncpy(arg, ptr, strlen(chaine) - i);
74: if (arg[strlen(chaine) - i - 1] == '\n')
75: i++;
76: arg[strlen(chaine) - i] = '\0';
77:
78: return 0;
79: }
80:
81: char **
82: vrrp_conf_split_args(char *args, char delimiter)
83: {
84: char **tabargs;
85: int i, j, nbargs = 0;
86: char *ptr;
87:
88: tabargs = (char **)malloc(sizeof(char *) * VRRP_CONF_MAX_ARGS);
89: bzero(tabargs, sizeof(char **) * VRRP_CONF_MAX_ARGS);
90: if (!tabargs) {
91: syslog(LOG_ERR, "cannot malloc memory : %s", strerror(errno));
92: exit(EXIT_FAILURE);
93: }
94: i = 0;
95: while (i < strlen(args)) {
96: ptr = &args[i];
97: j = 0;
98: while (ptr[j] != delimiter && ptr[j] != 0) {
99: i++;
100: j++;
101: }
102: tabargs[nbargs] = (char *)calloc(j + 1, 1);
103: strncpy(tabargs[nbargs], ptr, j);
104: i++;
105: while (!isalnum(args[i]) && args[i] != '.' && args[i] != '/' && args[i])
106: i++;
107: nbargs++;
108: if (nbargs >= VRRP_CONF_MAX_ARGS) {
109: syslog(LOG_ERR, "too many arguments in the configuration file");
110: exit(EXIT_FAILURE);
111: }
112: }
113:
114: return tabargs;
115: }
116:
117: void
118: vrrp_conf_freeargs(char **temp)
119: {
120: int i = 0;
121:
122: while (temp[i]) {
123: free(temp[i]);
124: temp[i] = NULL;
125: i++;
126: }
127: free(temp);
128:
129: return;
130: }
131:
132: FILE *
133: vrrp_conf_open_file(char *name)
134: {
135: FILE *stream;
136: struct stat st;
137:
138: stream = fopen(name, "r");
139: if (! stream) {
140: syslog(LOG_ERR, "cannot open configuration file %s: %s", name, strerror(errno));
141: return NULL;
142: }
143: if (lstat(name, &st) == -1) {
144: syslog(LOG_ERR, "cannot call lstat(): %s", strerror(errno));
145: fclose(stream);
146: return NULL;
147: }
148: if ((st.st_mode & S_IFMT) != S_IFREG) {
149: syslog(LOG_ERR, "%s is not a regular file", name);
150: fclose(stream);
151: return NULL;
152: }
153:
154: return stream;
155: }
156:
157: char
158: vrrp_conf_close_file(FILE * stream)
159: {
160: if (fclose(stream) == EOF) {
161: syslog(LOG_ERR, "can't close the file stream FILE *stream: %s\n", strerror(errno));
162: return -1;
163: }
164: return 0;
165: }
166:
167: char
168: vrrp_conf_lecture_fichier(struct vrrp_vr * vr, FILE * stream)
169: {
170: char ligne[1024] = "#";
171: char **temp;
172: char **temp2;
173: char **temp3;
174: char option[1024], arg[1024];
175: int i, j;
176: fpos_t pos;
177: int optok;
178:
179: fgetpos(stream, &pos);
180: if (!pos) {
181: while (ligne[0] == '#' || ligne[0] == 0 || ligne[0] == '\n')
182: fgets(ligne, 1024, stream);
183: if (strncmp(ligne, "[VRID]", 6)) {
184: syslog(LOG_ERR, "configuration file error ! cannot see [VRID] section");
185: return -1;
186: }
187: fgets(ligne, 1024, stream);
188: }
189: while (!feof(stream) && strncmp(ligne, "[VRID]", 6)) {
190: if (ligne[0] != 0 && ligne[0] != '\n' && ligne[0] != '#') {
191: if (feof(stream))
192: break;
193: vrrp_conf_ident_option_arg(ligne, option, arg);
194: optok = 0;
195: if (!strcmp(option, "addr")) {
196: temp = vrrp_conf_split_args(arg, ',');
197: i = 0;
198: while (temp[i])
199: i++;
200: vr->vr_ip = (struct vrrp_vip *) calloc(i, sizeof(struct vrrp_vip) + 1);
201: vr->vr_netmask = (u_int *) calloc(i, sizeof(u_int) + 1);
202: i = 0;
203: while (temp[i] && (i < VRRP_CONF_MAX_ARGS)) {
204: temp2 = vrrp_conf_split_args(temp[i], ':');
205: if (temp2[1]) {
206: vr->vr_ip[i].if_name = (char *)calloc(IFNAMSIZ + 1, 1);
207: strncpy(vr->vr_ip[i].if_name, temp2[0], IFNAMSIZ);
208: temp3 = vrrp_conf_split_args(temp2[1], '/');
209: }
210: else
211: temp3 = vrrp_conf_split_args(temp2[0], '/');
212: j = 0;
213: while (temp3[j])
214: j++;
215: if (j != 2) {
216: syslog(LOG_ERR, "bad value in the configuration file for addr option: %s", arg);
217: exit(-1);
218: }
219: vr->vr_ip[i].addr.s_addr = inet_addr(temp3[0]);
220: vr->vr_netmask[i] = atoi(temp3[1]);
221: i++;
222: vrrp_conf_freeargs(temp3);
223: vrrp_conf_freeargs(temp2);
224: }
225: vr->cnt_ip = i;
226: vrrp_conf_freeargs(temp);
227: optok = 1;
228: }
229: if (!strcmp(option, "interface")) {
230: temp = vrrp_conf_split_args(arg, ',');
231: if (!(vr->vr_if = vrrp_misc_search_if_entry(temp[0]))) {
232: vr->vr_if = (struct vrrp_if *)calloc(1, sizeof(struct vrrp_if));
233: strncpy(vr->vr_if->if_name, temp[0], sizeof(vr->vr_if->if_name));
234: }
235: vrrp_conf_freeargs(temp);
236: optok = 1;
237: }
238: if (!strcmp(option, "monitoredcircuits")) {
239: if (! strcmp(arg, "yes"))
240: vr->useMonitoredCircuits = 1;
241: else {
242: if (! strcmp(arg, "no"))
243: vr->useMonitoredCircuits = 0;
244: else {
245: syslog(LOG_ERR, "bad value for useMonitoredCircuits: %s", arg);
246: exit(-1);
247: }
248: }
249: optok = 1;
250: }
251: if (!strcmp(option, "serverid")) {
252: vr->vr_id = atoi(arg);
253: optok = 1;
254: }
255: if (!strcmp(option, "carriertimeout")) {
256: if (vr->vr_if)
257: vr->vr_if->carrier_timeout = atoi(arg);
258: else
259: syslog(LOG_ERR, "'carriertimeout' must be specified after 'interface'");
260: optok = 1;
261: }
262: if (!strcmp(option, "spanningtreelatency")) {
263: vr->spanningTreeLatency = atoi(arg);
264: optok = 1;
265: }
266: if (!strcmp(option, "priority")) {
267: temp = vrrp_conf_split_args(arg, ',');
268: vr->priority = atoi(temp[0]);
269: vrrp_conf_freeargs(temp);
270: optok = 1;
271: }
272: if (!strcmp(option, "password")) {
273: temp = vrrp_conf_split_args(arg, ',');
274: vr->password = (char *)calloc(8, 1);
275: strncpy(vr->password, temp[0], 8);
276: vrrp_conf_freeargs(temp);
277: vr->auth_type = 1;
278: optok = 1;
279: }
280: if (!strcmp(option, "masterscript")) {
281: vr->master_script = (char *)calloc(strlen(arg)+1, 1);
282: strncpy(vr->master_script, arg, strlen(arg));
283: optok = 1;
284: }
285: if (!strcmp(option, "backupscript")) {
286: vr->backup_script = (char *)calloc(strlen(arg)+1, 1);
287: strncpy(vr->backup_script, arg, strlen(arg));
288: optok = 1;
289: }
290: if (! strcmp(option, "vridsdep")) {
291: temp = vrrp_conf_split_args(arg, ',');
292: i = 0;
293: while (temp[i]) i++;
294: vr->vridsdeps = (int *)calloc(i+1, sizeof(int));
295: i = 0;
296: while (temp[i]) {
297: vr->vridsdeps[i] = atoi(temp[i]);
298: i++;
299: }
300: vr->vridsdeps[i] = -1;
301: vrrp_conf_freeargs(temp);
302: optok = 1;
303: }
304: if (!strcmp(option, "useIKE")) {
305: if (! strcmp(arg, "yes"))
306: vr->useIKE = 1;
307: else {
308: if (! strcmp(arg, "no"))
309: vr->useIKE = 0;
310: else {
311: syslog(LOG_ERR, "bad value for useIKE: %s", arg);
312: exit(-1);
313: }
314: }
315: optok = 1;
316: }
317: if (!strcmp(option, "AHencryption")) {
318: if (! strcmp(arg, "yes")) {
319: vr->AHencryption = 1;
320: vr->auth_type = 2;
321: } else {
322: if (! strcmp(arg, "no"))
323: vr->AHencryption = 0;
324: else {
325: syslog(LOG_ERR, "bad value for AHencryption: %s", arg);
326: exit(-1);
327: }
328: }
329: optok = 1;
330: }
331: if (!strcmp(option, "presharedkey")) {
332: if (vr->password) {
333: syslog(LOG_ERR, "you cannot use presharedkey option with password option");
334: exit(-1);
335: }
336: vr->password = (char *)calloc(strlen(arg)+1, 1);
337: strncpy(vr->password, arg, strlen(arg));
338: optok = 1;
339: }
340: if (!strcmp(option, "MCClearErrorsCount")) {
341: vr->monitoredCircuitsClearErrorsCount = atoi(arg);
342: optok = 1;
343: }
344: if (! optok)
345: syslog(LOG_ERR, "option '%s' unknown on configuration file, ignoring it", option);
346: }
347: fgets(ligne, 1024, stream);
348: }
349: if (feof(stream))
350: return 1;
351:
352: return 0;
353: }
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