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1.1 root 1: /*
2: * Copyright (c) 1985 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: */
6:
7: #ifndef lint
8: static char sccsid[] = "@(#)ruserpass.c 1.3 (Berkeley) 3/7/86";
9: #endif not lint
10:
11:
12: struct macel {
13: char mac_name[9]; /* macro name */
14: char *mac_start; /* start of macro in macbuf */
15: char *mac_end; /* end of macro in macbuf */
16: };
17:
18: extern int macnum, proxy; /* number of defined macros */
19: extern struct macel macros[16], *macpt;
20: extern char macbuf[4096];
21:
22: #include <stdio.h>
23: #include <utmp.h>
24: #include <ctype.h>
25: #include <sys/types.h>
26: #include <sys/stat.h>
27: #include <errno.h>
28:
29: char *renvlook(), *malloc(), *index(), *getenv(), *getpass(), *getlogin();
30: char *strcpy();
31: struct utmp *getutmp();
32: static FILE *cfile;
33:
34: ruserpass(host, aname, apass, aacct)
35: char *host, **aname, **apass, **aacct;
36: {
37:
38: /* renv(host, aname, apass, aacct);
39: if (*aname == 0 || *apass == 0) */
40: return(rnetrc(host, aname, apass, aacct));
41: }
42:
43: #define DEFAULT 1
44: #define LOGIN 2
45: #define PASSWD 3
46: #define ACCOUNT 4
47: #define MACDEF 5
48: #define ID 10
49: #define MACHINE 11
50:
51: static char tokval[100];
52:
53: static struct toktab {
54: char *tokstr;
55: int tval;
56: } toktab[]= {
57: "default", DEFAULT,
58: "login", LOGIN,
59: "password", PASSWD,
60: "account", ACCOUNT,
61: "machine", MACHINE,
62: "macdef", MACDEF,
63: 0, 0
64: };
65:
66: static
67: rnetrc(host, aname, apass, aacct)
68: char *host, **aname, **apass, **aacct;
69: {
70: char *hdir, buf[BUFSIZ], *tmp;
71: int t, i, c;
72: struct stat stb;
73: extern int errno;
74:
75: hdir = getenv("HOME");
76: if (hdir == NULL)
77: hdir = ".";
78: (void) sprintf(buf, "%s/.netrc", hdir);
79: cfile = fopen(buf, "r");
80: if (cfile == NULL) {
81: if (errno != ENOENT)
82: perror(buf);
83: return(0);
84: }
85: next:
86: while ((t = token())) switch(t) {
87:
88: case DEFAULT:
89: (void) token();
90: continue;
91:
92: case MACHINE:
93: if (token() != ID || strcmp(host, tokval))
94: continue;
95: while ((t = token()) && t != MACHINE) switch(t) {
96:
97: case LOGIN:
98: if (token())
99: if (*aname == 0) {
100: *aname = malloc((unsigned) strlen(tokval) + 1);
101: (void) strcpy(*aname, tokval);
102: } else {
103: if (strcmp(*aname, tokval))
104: goto next;
105: }
106: break;
107: case PASSWD:
108: if (fstat(fileno(cfile), &stb) >= 0
109: && (stb.st_mode & 077) != 0) {
110: fprintf(stderr, "Error - .netrc file not correct mode.\n");
111: fprintf(stderr, "Remove password or correct mode.\n");
112: return(-1);
113: }
114: if (token() && *apass == 0) {
115: *apass = malloc((unsigned) strlen(tokval) + 1);
116: (void) strcpy(*apass, tokval);
117: }
118: break;
119: case ACCOUNT:
120: if (fstat(fileno(cfile), &stb) >= 0
121: && (stb.st_mode & 077) != 0) {
122: fprintf(stderr, "Error - .netrc file not correct mode.\n");
123: fprintf(stderr, "Remove account or correct mode.\n");
124: return(-1);
125: }
126: if (token() && *aacct == 0) {
127: *aacct = malloc((unsigned) strlen(tokval) + 1);
128: (void) strcpy(*aacct, tokval);
129: }
130: break;
131: case MACDEF:
132: if (proxy) {
133: return(0);
134: }
135: while ((c=getc(cfile)) != EOF && c == ' ' || c == '\t');
136: if (c == EOF || c == '\n') {
137: printf("Missing macdef name argument.\n");
138: return(-1);
139: }
140: if (macnum == 16) {
141: printf("Limit of 16 macros have already been defined\n");
142: return(-1);
143: }
144: tmp = macros[macnum].mac_name;
145: *tmp++ = c;
146: for (i=0; i < 8 && (c=getc(cfile)) != EOF &&
147: !isspace(c); ++i) {
148: *tmp++ = c;
149: }
150: if (c == EOF) {
151: printf("Macro definition missing null line terminator.\n");
152: return(-1);
153: }
154: *tmp = '\0';
155: if (c != '\n') {
156: while ((c=getc(cfile)) != EOF && c != '\n');
157: }
158: if (c == EOF) {
159: printf("Macro definition missing null line terminator.\n");
160: return(-1);
161: }
162: if (macnum == 0) {
163: macros[macnum].mac_start = macbuf;
164: }
165: else {
166: macros[macnum].mac_start = macros[macnum-1].mac_end + 1;
167: }
168: tmp = macros[macnum].mac_start;
169: while (tmp != macbuf + 4096) {
170: if ((c=getc(cfile)) == EOF) {
171: printf("Macro definition missing null line terminator.\n");
172: return(-1);
173: }
174: *tmp = c;
175: if (*tmp == '\n') {
176: if (*(tmp-1) == '\0') {
177: macros[macnum++].mac_end = tmp - 1;
178: break;
179: }
180: *tmp = '\0';
181: }
182: tmp++;
183: }
184: if (tmp == macbuf + 4096) {
185: printf("4K macro buffer exceeded\n");
186: return(-1);
187: }
188: break;
189: default:
190: fprintf(stderr, "Unknown .netrc keyword %s\n", tokval);
191: break;
192: }
193: goto done;
194: }
195: done:
196: (void) fclose(cfile);
197: return(0);
198: }
199:
200: static
201: token()
202: {
203: char *cp;
204: int c;
205: struct toktab *t;
206:
207: if (feof(cfile))
208: return (0);
209: while ((c = getc(cfile)) != EOF &&
210: (c == '\n' || c == '\t' || c == ' ' || c == ','))
211: continue;
212: if (c == EOF)
213: return (0);
214: cp = tokval;
215: if (c == '"') {
216: while ((c = getc(cfile)) != EOF && c != '"') {
217: if (c == '\\')
218: c = getc(cfile);
219: *cp++ = c;
220: }
221: } else {
222: *cp++ = c;
223: while ((c = getc(cfile)) != EOF
224: && c != '\n' && c != '\t' && c != ' ' && c != ',') {
225: if (c == '\\')
226: c = getc(cfile);
227: *cp++ = c;
228: }
229: }
230: *cp = 0;
231: if (tokval[0] == 0)
232: return (0);
233: for (t = toktab; t->tokstr; t++)
234: if (!strcmp(t->tokstr, tokval))
235: return (t->tval);
236: return (ID);
237: }
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