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1.1 root 1: /*
2: * This function initializes all the strings used for the various
3: * filenames. They cannot be compiled into the program, since that
4: * would be non-portable. With this convention, the netnews sub-system
5: * can be owned by any non-priviledged user. It is also possible
6: * to work when the administration randomly moves users from one
7: * filesystem to another. The convention is that a particular user
8: * (HOME, see Makefile) is searched for in /etc/passwd and all files
9: * are presumed relative to there. This method also allows one copy
10: * of the object code to be used on ANY machine. (this code runs
11: * un-modified on 50+ machines at IH!!)
12: *
13: * The disadvantage to using this method is that all netnews programs
14: * (inews, readnews, rnews, checknews) must first search /etc/passwd
15: * before they can start up. This can cause significant overhead if
16: * you have a big password file.
17: *
18: * Some games are played with ifdefs to get three .o files out of this
19: * one source file. INEW is defined for inews, READ for readnews,
20: * and CHKN for checknews.
21: */
22: static char *sccsid = "@(#)pathinit.c 1.2 3/30/83";
23:
24: #ifdef INEW
25: #include "iparams.h"
26: #endif
27:
28: #ifdef READ
29: #include "rparams.h"
30: extern char MAILPARSER[];
31: #endif
32:
33: #ifdef CHKN
34: #include <stdio.h>
35: extern char SPOOL[];
36: extern char LIB[];
37: extern char ACTIVE[];
38: #endif
39:
40: #ifdef EXP
41: #include <stdio.h>
42: extern char SPOOL[];
43: extern char LIB[];
44: extern char ACTIVE[];
45: extern char OLDNEWS[];
46: #endif
47:
48: struct passwd *getpwname();
49: char *rindex();
50:
51: pathinit()
52: {
53: struct passwd *pw; /* struct for pw lookup */
54: FILE *nfd; /* notify file descriptor */
55: char *p;
56: #if INEW || READ
57: struct utsname ubuf;
58:
59: uname(&ubuf);
60: strcpy(FULLSYSNAME, ubuf.nodename);
61: strcpy(SYSNAME, ubuf.nodename);
62: SYSNAME[SNLN] = '\0';
63: #endif
64:
65: #ifdef HOME
66: /* Relative to the home directory of user HOME */
67: sprintf(SPOOL, "%s/%s", logdir(HOME), SPOOLDIR);
68: sprintf(LIB, "%s/%s", logdir(HOME), LIBDIR);
69: #else
70: /* Fixed paths defined in Makefile */
71: strcpy(SPOOL, SPOOLDIR);
72: strcpy(LIB, LIBDIR);
73: #endif
74:
75: sprintf(ACTIVE, "%s/active", LIB);
76:
77: #ifdef EXP
78: strcpy(OLDNEWS, SPOOL);
79: p = rindex(OLDNEWS, '/');
80: if (p)
81: strcpy(++p, "oldnews");
82: #endif
83:
84: #if INEW || READ
85: sprintf(LOCKFILE, "%s/LOCK", LIB);
86: sprintf(SEQFILE, "%s/seq", LIB);
87: sprintf(NGFILE, "%s/ngfile", LIB);
88: sprintf(SUBFILE, "%s/sys", LIB);
89: sprintf(ARTFILE, "%s/history", LIB);
90: # ifdef INEW
91: sprintf(ARTICLE, "%s/.arXXXXXX", SPOOL);
92: sprintf(INFILE, "%s/.inXXXXXX", SPOOL);
93: sprintf(logfname, "%s/log", LIB);
94: sprintf(STASH, "%s/junk", LIB);
95: # endif
96: # ifdef READ
97: sprintf(HELPFILE, "%s/help", LIB);
98: sprintf(CAESAR, "%s/caesar", LIB);
99: sprintf(USERS, "%s/users", LIB);
100: #ifdef SENDMAIL
101: strcpy(MAILPARSER, SENDMAIL); /* SENDMAIL includes -t */
102: #else
103: sprintf(MAILPARSER, "%s/recmail", LIB);
104: #endif
105: # endif
106:
107: /*
108: * The person notified by the netnews sub-system. Again, no name is
109: * compiled in, but instead the information is taken from a file.
110: * If the file does not exist, a "default" person will get the mail.
111: * If the file exists, but is empty, nobody will get the mail. This
112: * may seem backwards, but is a better fail-safe.
113: */
114: # ifdef NOTIFY
115: sprintf(TELLFILE, "%s/notify", LIB);
116: nfd = fopen(TELLFILE, "r");
117: if (nfd == NULL)
118: sprintf(TELLME, "%s", NOTIFY);
119: else if (fscanf(nfd, "%s", TELLME) == EOF)
120: strcpy(TELLME, "");
121: # endif
122:
123: /*
124: * Since the netnews owner's id number is different on different
125: * systems, we'll extract it from the /etc/passwd file. If no entry,
126: * default to root. This id number seems to only be used to control who
127: * can input certain control messages or cancel any message. Note that
128: * entry is the name from the "notify" file as found above if possible.
129: * Defining ROOTID in defs.h hardwires in a number and avoids
130: * another search of /etc/passwd.
131: */
132: # ifndef ROOTID
133: if ((pw = getpwname(TELLME)) != NULL)
134: ROOTID = pw->pw_uid;
135: else if ((pw = getpwname(HOME)) != NULL)
136: ROOTID = pw->pw_uid;
137: else
138: ROOTID = 0; /* nobody left, let only root */
139: # endif ROOTID
140: #endif INEW || READ
141: }
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