3 This code is not copyright, and is placed in the public domain. Feel free to
4 use and modify. Please send modifications and/or suggestions + bug fixes to
6 Klas Heggemann <klas@nada.kth.se>
11 static const char rcsid[] =
17 #include <rpcsvc/yp_prot.h>
18 #include <rpcsvc/ypclnt.h>
20 #include "bootparam_prot.h"
28 #include <sys/types.h>
29 #include <sys/socket.h>
30 extern int debug, dolog;
31 extern in_addr_t route_addr;
32 extern char *bootpfile;
37 static char buffer[MAXLEN];
38 static char hostname[MAX_MACHINE_NAME];
39 static char askname[MAX_MACHINE_NAME];
40 static char path[MAX_PATH_LEN];
41 static char domain_name[MAX_MACHINE_NAME];
43 int getthefile(char *, char *, char *, int);
44 int checkhost(char *, char *, int);
47 bootparamproc_whoami_1_svc(whoami, req)
48 bp_whoami_arg *whoami;
52 static bp_whoami_res res;
54 fprintf(stderr,"whoami got question for %d.%d.%d.%d\n",
55 255 & whoami->client_address.bp_address_u.ip_addr.net,
56 255 & whoami->client_address.bp_address_u.ip_addr.host,
57 255 & whoami->client_address.bp_address_u.ip_addr.lh,
58 255 & whoami->client_address.bp_address_u.ip_addr.impno);
60 syslog(LOG_NOTICE, "whoami got question for %d.%d.%d.%d\n",
61 255 & whoami->client_address.bp_address_u.ip_addr.net,
62 255 & whoami->client_address.bp_address_u.ip_addr.host,
63 255 & whoami->client_address.bp_address_u.ip_addr.lh,
64 255 & whoami->client_address.bp_address_u.ip_addr.impno);
66 bcopy((char *)&whoami->client_address.bp_address_u.ip_addr, (char *)&haddr,
68 he = gethostbyaddr((char *)&haddr,sizeof(haddr),AF_INET);
69 if ( ! he ) goto failed;
71 if (debug) warnx("this is host %s", he->h_name);
72 if (dolog) syslog(LOG_NOTICE,"This is host %s\n", he->h_name);
74 strncpy(askname, he->h_name, sizeof(askname));
75 askname[sizeof(askname)-1] = 0;
77 if (checkhost(askname, hostname, sizeof hostname) ) {
78 res.client_name = hostname;
79 getdomainname(domain_name, MAX_MACHINE_NAME);
80 res.domain_name = domain_name;
82 if ( res.router_address.address_type != IP_ADDR_TYPE ) {
83 res.router_address.address_type = IP_ADDR_TYPE;
84 bcopy( &route_addr, &res.router_address.bp_address_u.ip_addr, sizeof(in_addr_t));
86 if (debug) fprintf(stderr,
87 "Returning %s %s %d.%d.%d.%d\n",
90 255 & res.router_address.bp_address_u.ip_addr.net,
91 255 & res.router_address.bp_address_u.ip_addr.host,
92 255 & res.router_address.bp_address_u.ip_addr.lh,
93 255 & res.router_address.bp_address_u.ip_addr.impno);
94 if (dolog) syslog(LOG_NOTICE,
95 "Returning %s %s %d.%d.%d.%d\n",
98 255 & res.router_address.bp_address_u.ip_addr.net,
99 255 & res.router_address.bp_address_u.ip_addr.host,
100 255 & res.router_address.bp_address_u.ip_addr.lh,
101 255 & res.router_address.bp_address_u.ip_addr.impno);
106 if (debug) warnx("whoami failed");
107 if (dolog) syslog(LOG_NOTICE,"whoami failed\n");
113 bootparamproc_getfile_1_svc(getfile, req)
114 bp_getfile_arg *getfile;
118 static bp_getfile_res res;
121 warnx("getfile got question for \"%s\" and file \"%s\"",
122 getfile->client_name, getfile->file_id);
125 syslog(LOG_NOTICE,"getfile got question for \"%s\" and file \"%s\"\n",
126 getfile->client_name, getfile->file_id);
129 he = gethostbyname(getfile->client_name);
130 if (! he ) goto failed;
132 strncpy(askname, he->h_name, sizeof(askname));
133 askname[sizeof(askname)-1] = 0;
135 if (getthefile(askname, getfile->file_id,buffer,sizeof(buffer))) {
136 if ( (where = strchr(buffer,':')) ) {
137 /* buffer is re-written to contain the name of the info of file */
138 strncpy(hostname, buffer, where - buffer);
139 hostname[where - buffer] = '\0';
142 he = gethostbyname(hostname);
143 if ( !he ) goto failed;
144 bcopy( he->h_addr, &res.server_address.bp_address_u.ip_addr, 4);
145 res.server_name = hostname;
146 res.server_path = path;
147 res.server_address.address_type = IP_ADDR_TYPE;
149 else { /* special for dump, answer with null strings */
150 if (!strcmp(getfile->file_id, "dump")) {
151 res.server_name = "";
152 res.server_path = "";
153 res.server_address.address_type = IP_ADDR_TYPE;
154 bzero(&res.server_address.bp_address_u.ip_addr,4);
158 fprintf(stderr, "returning server:%s path:%s address: %d.%d.%d.%d\n",
159 res.server_name, res.server_path,
160 255 & res.server_address.bp_address_u.ip_addr.net,
161 255 & res.server_address.bp_address_u.ip_addr.host,
162 255 & res.server_address.bp_address_u.ip_addr.lh,
163 255 & res.server_address.bp_address_u.ip_addr.impno);
165 syslog(LOG_NOTICE, "returning server:%s path:%s address: %d.%d.%d.%d\n",
166 res.server_name, res.server_path,
167 255 & res.server_address.bp_address_u.ip_addr.net,
168 255 & res.server_address.bp_address_u.ip_addr.host,
169 255 & res.server_address.bp_address_u.ip_addr.lh,
170 255 & res.server_address.bp_address_u.ip_addr.impno);
174 if (debug) warnx("getfile failed for %s", getfile->client_name);
175 if (dolog) syslog(LOG_NOTICE,
176 "getfile failed for %s\n", getfile->client_name);
180 /* getthefile return 1 and fills the buffer with the information
181 of the file, e g "host:/export/root/client" if it can be found.
182 If the host is in the database, but the file is not, the buffer
183 will be empty. (This makes it possible to give the special
184 empty answer for the file "dump") */
187 getthefile(askname,fileid,buffer,blen)
189 char *fileid, *buffer;
197 static char *yp_domain;
200 int ch, pch, fid_len, res = 0;
202 char info[MAX_FILEID + MAX_PATH_LEN+MAX_MACHINE_NAME + 3];
204 bpf = fopen(bootpfile, "r");
206 errx(1, "no %s", bootpfile);
208 /* XXX see comment below */
209 while ( fscanf(bpf, "%255s", hostname) > 0 && !match ) {
210 if ( *hostname != '#' ) { /* comment */
211 if ( ! strcmp(hostname, askname) ) {
214 he = gethostbyname(hostname);
215 if (he && !strcmp(he->h_name, askname)) match = 1;
218 if (*hostname == '+' ) { /* NIS */
220 if (yp_get_default_domain(&yp_domain)) {
221 if (debug) warn("NIS");
224 if (yp_match(yp_domain, "bootparams", askname, strlen(askname),
225 &result, &resultlen))
227 if (strstr(result, fileid) == NULL) {
230 snprintf(buffer, blen,
231 "%s",strchr(strstr(result,fileid), '=') + 1);
232 if (strchr(buffer, ' ') != NULL)
233 *(char *)(strchr(buffer, ' ')) = '\0';
236 warnx("could not close %s", bootpfile);
239 return(0); /* ENOTSUP */
242 /* skip to next entry */
244 pch = ch = getc(bpf);
245 while ( ! ( ch == '\n' && pch != '\\') && ch != EOF) {
246 pch = ch; ch = getc(bpf);
250 /* if match is true we read the rest of the line to get the
254 fid_len = strlen(fileid);
255 while ( ! res && (fscanf(bpf,"%s", info)) > 0) { /* read a string */
256 ch = getc(bpf); /* and a character */
257 if ( *info != '#' ) { /* Comment ? */
258 if (! strncmp(info, fileid, fid_len) && *(info + fid_len) == '=') {
259 where = info + fid_len + 1;
260 if ( isprint( *where )) {
261 strcpy(buffer, where); /* found file */
265 while (isspace(ch) && ch != '\n') ch = getc(bpf);
266 /* read to end of line */
267 if ( ch == '\n' ) { /* didn't find it */
268 res = -1; break; /* but host is there */
270 if ( ch == '\\' ) { /* more info */
271 ch = getc(bpf); /* maybe on next line */
272 if (ch == '\n') continue; /* read it in next loop */
273 ungetc(ch, bpf); ungetc('\\',bpf); /* push the character(s) back */
274 } else ungetc(ch, bpf); /* but who know what a `\` is */
276 } else break; /* a commented rest-of-line */
279 if (fclose(bpf)) { warnx("could not close %s", bootpfile); }
280 if ( res == -1) buffer[0] = '\0'; /* host found, file not */
284 /* checkhost puts the hostname found in the database file in
285 the hostname-variable and returns 1, if askname is a valid
286 name for a host in the database */
289 checkhost(askname, hostname, len)
300 static char *yp_domain;
303 /* struct hostent *cmp_he;*/
305 bpf = fopen(bootpfile, "r");
307 errx(1, "no %s", bootpfile);
309 /* XXX there is no way in ISO C to specify the maximal length for a
310 conversion in a variable way */
311 while ( fscanf(bpf, "%254s", hostname) > 0 ) {
312 if ( *hostname != '#' ) { /* comment */
313 if ( ! strcmp(hostname, askname) ) {
314 /* return true for match of hostname */
318 /* check the alias list */
320 he = gethostbyname(hostname);
321 if (he && !strcmp(askname, he->h_name)) {
327 if (*hostname == '+' ) { /* NIS */
329 if (yp_get_default_domain(&yp_domain)) {
330 if (debug) warn("NIS");
333 if (!yp_match(yp_domain, "bootparams", askname, strlen(askname),
334 &result, &resultlen)) {
335 /* return true for match of hostname */
337 he = gethostbyname(askname);
338 if (he && !strcmp(askname, he->h_name)) {
340 snprintf(hostname, len, "%s", he->h_name);
344 warnx("could not close %s", bootpfile);
347 return(0); /* ENOTSUP */
350 /* skip to next entry */
351 pch = ch = getc(bpf);
352 while ( ! ( ch == '\n' && pch != '\\') && ch != EOF) {
353 pch = ch; ch = getc(bpf);
356 if (fclose(bpf)) { warnx("could not close %s", bootpfile); }