Commit | Line | Data |
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805e021f CE |
1 | /* |
2 | * Copyright 2000, International Business Machines Corporation and others. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * This software has been released under the terms of the IBM Public | |
6 | * License. For details, see the LICENSE file in the top-level source | |
7 | * directory or online at http://www.openafs.org/dl/license10.html | |
8 | */ | |
9 | ||
10 | #include <afsconfig.h> | |
11 | #include <afs/param.h> | |
12 | ||
13 | #include <roken.h> | |
14 | #include <afs/opr.h> | |
15 | ||
16 | #include <afs/pthread_glock.h> | |
17 | #include <afs/afsutil.h> | |
18 | #include <rx/rxkad.h> | |
19 | ||
20 | #include "cellconfig.h" | |
21 | #include "keys.h" | |
22 | ||
23 | /* write ThisCell and CellServDB containing exactly one cell's info specified | |
24 | by acellInfo parm. Useful only on the server (which describes only one cell). | |
25 | */ | |
26 | ||
27 | static int | |
28 | VerifyEntries(struct afsconf_cell *aci) | |
29 | { | |
30 | int i; | |
31 | struct hostent *th; | |
32 | ||
33 | for (i = 0; i < aci->numServers; i++) { | |
34 | if (aci->hostAddr[i].sin_addr.s_addr == 0) { | |
35 | /* no address spec'd */ | |
36 | if (*(aci->hostName[i]) != 0) { | |
37 | int code; | |
38 | struct addrinfo hints; | |
39 | struct addrinfo *result; | |
40 | struct addrinfo *rp; | |
41 | ||
42 | memset(&hints, 0, sizeof(struct addrinfo)); | |
43 | hints.ai_family = AF_INET; | |
44 | hints.ai_socktype = SOCK_DGRAM; | |
45 | ||
46 | code = getaddrinfo(aci->hostName[i], NULL, &hints, &result); | |
47 | if (code) { | |
48 | printf("Host %s not found in host database...\n", | |
49 | aci->hostName[i]); | |
50 | return AFSCONF_FAILURE; | |
51 | } | |
52 | for (rp = result; rp != NULL; rp = rp->ai_next) { | |
53 | struct sockaddr_in *sa = (struct sockaddr_in *)rp->ai_addr; | |
54 | if (!rx_IsLoopbackAddr(ntohl(sa->sin_addr.s_addr))) { | |
55 | aci->hostAddr[i].sin_addr.s_addr = sa->sin_addr.s_addr; | |
56 | break; | |
57 | } | |
58 | } | |
59 | freeaddrinfo(result); | |
60 | if (aci->hostAddr[i].sin_addr.s_addr == 0) { | |
61 | printf("No non-loopback addresses found for host %s\n", | |
62 | aci->hostName[i]); | |
63 | return AFSCONF_FAILURE; | |
64 | } | |
65 | } | |
66 | /* otherwise we're deleting this entry */ | |
67 | } else { | |
68 | /* address spec'd, perhaps no name known */ | |
69 | if (aci->hostName[i][0] != 0) | |
70 | continue; /* name known too */ | |
71 | /* figure out name, if possible */ | |
72 | th = gethostbyaddr((char *)(&aci->hostAddr[i].sin_addr), 4, | |
73 | AF_INET); | |
74 | if (!th) { | |
75 | strcpy(aci->hostName[i], "UNKNOWNHOST"); | |
76 | } else { | |
77 | if (strlcpy(aci->hostName[i], | |
78 | th->h_name, | |
79 | sizeof(aci->hostName[i])) | |
80 | >= sizeof(aci->hostName[i])) { | |
81 | strcpy(aci->hostName[i], "UNKNOWNHOST"); | |
82 | } | |
83 | } | |
84 | } | |
85 | } | |
86 | return 0; | |
87 | } | |
88 | ||
89 | /* Changed the interface to accept the afsconf_dir datastructure. | |
90 | This is a handle to the internal cache that is maintained by the bosserver. | |
91 | */ | |
92 | ||
93 | int | |
94 | afsconf_SetCellInfo(struct afsconf_dir *adir, const char *apath, | |
95 | struct afsconf_cell *acellInfo) | |
96 | { | |
97 | afs_int32 code; | |
98 | ||
99 | code = afsconf_SetExtendedCellInfo(adir, apath, acellInfo, NULL); | |
100 | return code; | |
101 | } | |
102 | ||
103 | int | |
104 | afsconf_SetExtendedCellInfo(struct afsconf_dir *adir, | |
105 | const char *apath, | |
106 | struct afsconf_cell *acellInfo, char clones[]) | |
107 | { | |
108 | afs_int32 code; | |
109 | int fd; | |
110 | char tbuffer[1024]; | |
111 | FILE *tf; | |
112 | afs_int32 i; | |
113 | ||
114 | LOCK_GLOBAL_MUTEX; | |
115 | /* write ThisCell file */ | |
116 | strcompose(tbuffer, 1024, apath, "/", AFSDIR_THISCELL_FILE, (char *)NULL); | |
117 | ||
118 | fd = open(tbuffer, O_RDWR | O_CREAT | O_TRUNC, 0666); | |
119 | if (fd < 0) { | |
120 | UNLOCK_GLOBAL_MUTEX; | |
121 | return errno; | |
122 | } | |
123 | i = (int)strlen(acellInfo->name); | |
124 | code = write(fd, acellInfo->name, i); | |
125 | if (code != i) { | |
126 | UNLOCK_GLOBAL_MUTEX; | |
127 | return AFSCONF_FAILURE; | |
128 | } | |
129 | if (close(fd) < 0) { | |
130 | UNLOCK_GLOBAL_MUTEX; | |
131 | return errno; | |
132 | } | |
133 | ||
134 | /* make sure we have both name and address for each host, looking up other | |
135 | * if need be */ | |
136 | code = VerifyEntries(acellInfo); | |
137 | if (code) { | |
138 | UNLOCK_GLOBAL_MUTEX; | |
139 | return code; | |
140 | } | |
141 | ||
142 | /* write CellServDB */ | |
143 | strcompose(tbuffer, 1024, apath, "/", AFSDIR_CELLSERVDB_FILE, (char *)NULL); | |
144 | tf = fopen(tbuffer, "w"); | |
145 | if (!tf) { | |
146 | UNLOCK_GLOBAL_MUTEX; | |
147 | return AFSCONF_NOTFOUND; | |
148 | } | |
149 | fprintf(tf, ">%s #Cell name\n", acellInfo->name); | |
150 | for (i = 0; i < acellInfo->numServers; i++) { | |
151 | code = acellInfo->hostAddr[i].sin_addr.s_addr; /* net order */ | |
152 | if (code == 0) | |
153 | continue; /* delete request */ | |
154 | code = ntohl(code); /* convert to host order */ | |
155 | if (clones && clones[i]) | |
156 | fprintf(tf, "[%d.%d.%d.%d] #%s\n", (code >> 24) & 0xff, | |
157 | (code >> 16) & 0xff, (code >> 8) & 0xff, code & 0xff, | |
158 | acellInfo->hostName[i]); | |
159 | else | |
160 | fprintf(tf, "%d.%d.%d.%d #%s\n", (code >> 24) & 0xff, | |
161 | (code >> 16) & 0xff, (code >> 8) & 0xff, code & 0xff, | |
162 | acellInfo->hostName[i]); | |
163 | } | |
164 | if (ferror(tf)) { | |
165 | fclose(tf); | |
166 | UNLOCK_GLOBAL_MUTEX; | |
167 | return AFSCONF_FAILURE; | |
168 | } | |
169 | code = fclose(tf); | |
170 | ||
171 | /* Reset the timestamp in the cache, so that | |
172 | * the CellServDB is read into the cache next time. | |
173 | * Resolves the lost update problem due to an inconsistent cache | |
174 | */ | |
175 | if (adir) | |
176 | adir->timeRead = 0; | |
177 | ||
178 | UNLOCK_GLOBAL_MUTEX; | |
179 | if (code == EOF) | |
180 | return AFSCONF_FAILURE; | |
181 | return 0; | |
182 | } |