Commit | Line | Data |
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dc0d77d7 CE |
1 | #include <unistd.h> |
2 | #include <sys/types.h> | |
3 | #include <sys/stat.h> | |
4 | #include "hasdevtcp.h" | |
5 | #ifdef HASDEVTCP | |
6 | #include <sys/mkdev.h> | |
7 | #endif | |
8 | #include <pwd.h> | |
9 | #include "strerr.h" | |
10 | #include "buffer.h" | |
11 | #include "uint32.h" | |
12 | #include "taia.h" | |
13 | #include "str.h" | |
14 | #include "open.h" | |
15 | #include "error.h" | |
16 | #include "exit.h" | |
17 | #include "auto_home.h" | |
18 | #include "generic-conf.h" | |
19 | ||
20 | #define FATAL "dnscache-conf: fatal: " | |
21 | ||
22 | void usage(void) | |
23 | { | |
24 | strerr_die1x(100,"dnscache-conf: usage: dnscache-conf acct logacct /dnscache [ myip ]"); | |
25 | } | |
26 | ||
27 | int fdrootservers; | |
28 | char rootserversbuf[64]; | |
29 | buffer ssrootservers; | |
30 | ||
31 | char *dir; | |
32 | char *user; | |
33 | char *loguser; | |
34 | struct passwd *pw; | |
35 | const char *myip; | |
36 | ||
37 | uint32 seed[32]; | |
38 | int seedpos = 0; | |
39 | ||
40 | void seed_adduint32(uint32 u) | |
41 | { | |
42 | int i; | |
43 | ||
44 | seed[seedpos] += u; | |
45 | if (++seedpos == 32) { | |
46 | for (i = 0;i < 32;++i) { | |
47 | u = ((u ^ seed[i]) + 0x9e3779b9) ^ (u << 7) ^ (u >> 25); | |
48 | seed[i] = u; | |
49 | } | |
50 | seedpos = 0; | |
51 | } | |
52 | } | |
53 | ||
54 | void seed_addtime(void) | |
55 | { | |
56 | struct taia t; | |
57 | char tpack[TAIA_PACK]; | |
58 | int i; | |
59 | ||
60 | taia_now(&t); | |
61 | taia_pack(tpack,&t); | |
62 | for (i = 0;i < TAIA_PACK;++i) | |
63 | seed_adduint32(tpack[i]); | |
64 | } | |
65 | ||
66 | int main(int argc,char **argv) | |
67 | { | |
68 | seed_addtime(); | |
69 | seed_adduint32(getpid()); | |
70 | seed_adduint32(getppid()); | |
71 | seed_adduint32(getuid()); | |
72 | seed_adduint32(getgid()); | |
73 | ||
74 | user = argv[1]; | |
75 | if (!user) usage(); | |
76 | loguser = argv[2]; | |
77 | if (!loguser) usage(); | |
78 | dir = argv[3]; | |
79 | if (!dir) usage(); | |
80 | if (dir[0] != '/') usage(); | |
81 | myip = argv[4]; | |
82 | if (!myip) myip = "127.0.0.1"; | |
83 | ||
84 | pw = getpwnam(loguser); | |
85 | seed_addtime(); | |
86 | if (!pw) | |
87 | strerr_die3x(111,FATAL,"unknown account ",loguser); | |
88 | ||
89 | if (chdir(auto_home) == -1) | |
90 | strerr_die4sys(111,FATAL,"unable to switch to ",auto_home,": "); | |
91 | ||
92 | fdrootservers = open_read("/etc/dnsroots.local"); | |
93 | if (fdrootservers == -1) { | |
94 | if (errno != error_noent) | |
95 | strerr_die2sys(111,FATAL,"unable to open /etc/dnsroots.local: "); | |
96 | fdrootservers = open_read("/etc/dnsroots.global"); | |
97 | if (fdrootservers == -1) | |
98 | strerr_die2sys(111,FATAL,"unable to open /etc/dnsroots.global: "); | |
99 | } | |
100 | ||
101 | init(dir,FATAL); | |
102 | ||
103 | seed_addtime(); makedir("log"); | |
104 | seed_addtime(); perm(02755); | |
105 | seed_addtime(); makedir("log/main"); | |
106 | seed_addtime(); owner(pw->pw_uid,pw->pw_gid); | |
107 | seed_addtime(); perm(02755); | |
108 | seed_addtime(); start("log/status"); finish(); | |
109 | seed_addtime(); owner(pw->pw_uid,pw->pw_gid); | |
110 | seed_addtime(); perm(0644); | |
111 | seed_addtime(); makedir("env"); | |
112 | seed_addtime(); perm(02755); | |
113 | seed_addtime(); start("env/ROOT"); outs(dir); outs("/root\n"); finish(); | |
114 | seed_addtime(); perm(0644); | |
115 | seed_addtime(); start("env/IP"); outs(myip); outs("\n"); finish(); | |
116 | seed_addtime(); perm(0644); | |
117 | seed_addtime(); start("env/IPSEND"); outs("0.0.0.0\n"); finish(); | |
118 | seed_addtime(); perm(0644); | |
119 | seed_addtime(); start("env/CACHESIZE"); outs("1000000\n"); finish(); | |
120 | seed_addtime(); perm(0644); | |
121 | seed_addtime(); start("env/DATALIMIT"); outs("3000000\n"); finish(); | |
122 | seed_addtime(); perm(0644); | |
123 | seed_addtime(); start("run"); | |
124 | outs("#!/bin/sh\nexec 2>&1\nexec <seed\nexec envdir ./env sh -c '\n exec envuidgid "); outs(user); | |
125 | outs(" softlimit -o250 -d \"$DATALIMIT\" "); | |
126 | outs(auto_home); outs("/bin/dnscache\n'\n"); finish(); | |
127 | seed_addtime(); perm(0755); | |
128 | seed_addtime(); start("log/run"); | |
129 | outs("#!/bin/sh\nexec setuidgid "); outs(loguser); | |
130 | outs(" multilog t ./main\n"); finish(); | |
131 | seed_addtime(); perm(0755); | |
132 | seed_addtime(); makedir("root"); | |
133 | seed_addtime(); perm(02755); | |
134 | seed_addtime(); makedir("root/ip"); | |
135 | seed_addtime(); perm(02755); | |
136 | seed_addtime(); start("root/ip/127.0.0.1"); finish(); | |
137 | seed_addtime(); perm(0600); | |
138 | seed_addtime(); makedir("root/servers"); | |
139 | seed_addtime(); perm(02755); | |
140 | seed_addtime(); start("root/servers/@"); | |
141 | buffer_init(&ssrootservers,buffer_unixread,fdrootservers,rootserversbuf,sizeof rootserversbuf); | |
142 | copyfrom(&ssrootservers); | |
143 | finish(); | |
144 | seed_addtime(); perm(0644); | |
145 | seed_addtime(); | |
146 | ||
147 | start("seed"); out((char *) seed,128); finish(); | |
148 | perm(0600); | |
149 | ||
150 | #ifdef HASDEVTCP | |
151 | makedir("root/etc"); | |
152 | perm(02755); | |
153 | makedir("root/dev"); | |
154 | perm(02755); | |
155 | start("root/etc/netconfig"); | |
156 | outs("tcp tpi_cots_ord v inet tcp /dev/tcp -\n"); | |
157 | outs("udp tpi_clts v inet udp /dev/udp -\n"); | |
158 | finish(); | |
159 | perm(0645); | |
160 | umask(000); | |
161 | if (mknod("root/dev/tcp",S_IFCHR | 0667,makedev(11,42)) == -1) | |
162 | strerr_die4sys(111,FATAL,"unable to create device ",dir,"/root/dev/tcp: "); | |
163 | if (mknod("root/dev/udp",S_IFCHR | 0667,makedev(11,41)) == -1) | |
164 | strerr_die4sys(111,FATAL,"unable to create device ",dir,"/root/dev/udp: "); | |
165 | umask(022); | |
166 | #endif | |
167 | ||
168 | _exit(0); | |
169 | } |