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1.1 root 1: #include "parms.h"
2: #include "structs.h"
3:
4: #ifdef RCSIDENT
5: static char rcsid[] = "$Header: access.c,v 1.7 85/01/18 15:00:31 notes Rel $";
6: #endif RCSIDENT
7:
8: /*
9: * access - process access list editing
10: *
11: * functions include:
12: * (1) display access lists
13: * (2) insert new entries
14: * (3) delete old entries
15: * (4) modify existing entries
16: *
17: * Original Coding: Ray Essick January 1982
18: */
19: #include <pwd.h>
20: #include <grp.h> /* /etc/passwd and /etc/group formats */
21:
22: char *kmap[] = /* mapping for name types */
23: {
24: "usr:", "grp:", "sys:"
25: };
26: char *map[] =
27: {
28: /* ----- */ "Null",
29: /* ----r */ "Read Only",
30: /* ---w- */ "(02)",
31: /* ---wr */ "(03)",
32: /* --d-- */ "(04)", /* nonsense */
33: /* --d-r */ "(05)", /* nonsense */
34: /* --dw- */ "(06)", /* nonsense */
35: /* --dwr */ "(07)",
36: /* -a--- */ "Answer Only", /* nonsense */
37: /* -a--r */ "Read/Answer",
38: /* -a-w- */ "Write only",
39: /* -a-wr */ "Read/Write",
40: /* -ad-- */ "(014)", /* nonsense */
41: /* -ad-r */ "(015)", /* nonsense */
42: /* -adw- */ "(016)", /* nonsense */
43: /* -adwr */ "Director/R/W"
44: };
45:
46: struct perm_f entry;
47: static int length; /* max on screen */
48:
49: accessedit (io)
50: struct io_f *io; /* notefile working with */
51: {
52: struct passwd *getpwnam ();
53: struct group *getgrnam (); /* check validity of name/group */
54: FILE * acs, *fopen (); /* stream I/O */
55: char fn[WDLEN];
56: struct auth_f me; /* for detecting suicidals */
57: struct perm_f alist[NPERMS]; /* hold the access list */
58:
59: int items,
60: base,
61: i,
62: which,
63: changed;
64: char c;
65: short ptype;
66: char zname[NAMESZ + 1]; /* hold new user */
67:
68:
69: sprintf (fn, "%s/%s/%s", io -> basedir, io -> nf, ACCESS);/* file name */
70: x ((acs = fopen (fn, "r")) == NULL, "access: no access file");
71: x ((items = fread (alist, sizeof entry, NPERMS, acs)) == 0, "access: empty file");
72: fclose (acs); /* and close the file */
73: changed = 0; /* no changes made to the list yet */
74: length = nrows - 6; /* max to show */
75: base = 0; /* which part are we displaying */
76: erase ();
77: plotit (alist, base, items);
78: while (1)
79: {
80: at (-1, 1);
81: printf ("Option: ");
82: c = gchar (); /* grab command */
83: printf ("\b \b"); /* overwrite */
84: switch (c)
85: {
86: case '?':
87: case 'h':
88: help (ACCHLP); /* print the help page */
89: goto redraw; /* replot the screen */
90:
91: case '!': /* fork a shell for him */
92: gshell ();
93: goto redraw;
94:
95: #ifdef K_KEY
96: case 'K': /* same as Q */
97: #endif K_KEY
98: case 'Q':
99: return 0; /* return to the caller */
100:
101: case '\004': /* abort notefiles */
102: return QUITFAST;
103:
104: #ifdef K_KEY
105: case 'k': /* same as q */
106: #endif K_KEY
107: case 'q': /* update lists (if changed) and leave) */
108: if (changed)
109: {
110: acssort (alist, items); /* order them */
111: x ((acs = fopen (fn, "w")) == NULL, "access: reopen");
112: x (fwrite (alist, sizeof entry, items, acs) != items, "access:update write");
113: fclose (acs); /* and close the file */
114: }
115: return 0;
116:
117: case '-': /* scroll display backwards */
118: base -= length / 2 - 1; /* back a half sreen */
119: if (base < 0)
120: base = 0; /* don't pass zero */
121: goto redraw;
122:
123: case '+': /* scroll display forwards */
124: base += length / 2 - 1; /* up half screen */
125: if (base >= items - (length / 2)) /* try to keep full */
126: {
127: base = items - (length - 3); /* don't over-run */
128: /*
129: * Gotta subtract 3: one for OBOE and two for the "-more-" message
130: * that might be there.
131: */
132: if (base < 0)
133: base = 0; /* careful */
134: }
135: goto redraw;
136:
137: case 's': /* sort and replot the list */
138: acssort (alist, items); /* do the sort */
139: /* and fall through to ... */
140: break;
141:
142: case 'r': /* replot the lists */
143: case '\014': /* everyone else uses ^L, might as well */
144: redraw:
145: erase ();
146: plotit (alist, base, items);
147: break; /* back to command sucker */
148:
149: case 'i': /* enter a bunch of permissions */
150: while (items < NPERMS) /* not if all full */
151: {
152: reget: at (-4, 40);
153: printf ("Entry type: \b");
154: if ((c = gchar ()) == '\n' || c == 'q' || c == 'k')
155: break; /* get out */
156: switch (c)
157: {
158: case 'u':
159: ptype = PERMUSER;
160: break;
161: case 'g':
162: ptype = PERMGROUP;
163: break;
164: case 's':
165: ptype = PERMSYSTEM;
166: break;
167: default:
168: printf ("\07 (u,g,s, q,k,<cr>)");
169: goto reget;
170: }
171: at (-3, 40);
172: printf ("Name: \b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
173: if (gline (zname, NAMESZ) == 1)
174: continue; /* null name */
175: if (ptype == PERMUSER && strcmp ("Other", zname) != 0)
176: {
177: if (getpwnam (zname) == NULL)
178: {
179: at (-2, 40);
180: printf ("--No such user--");
181: continue;
182: }
183: }
184: if (ptype == PERMGROUP && strcmp ("Other", zname) != 0)
185: {
186: if (getgrnam (zname) == NULL)
187: {
188: at (-2, 40);
189: printf ("--No such group--");
190: continue;
191: }
192: }
193: /*
194: * make sure that it isn't already there.
195: */
196:
197: for (i = 0; i < items; i++)
198: if (alist[i].ptype == ptype && strcmp (alist[i].name, zname) == 0)
199: {
200: at (-2, 40);
201: printf ("%s entry exists", zname);
202: goto reget;
203: }
204:
205: alist[items].perms = DFLTPERMS; /* give him default */
206: getmode (&alist[items].perms);
207: alist[items].ptype = ptype;
208: strmove (zname, alist[items].name); /* copy things over */
209: items++;
210: changed = 1; /* and set flags */
211: acssort (alist, items);
212: erase (); /* clean screen */
213: plotit (alist, base, items); /* show new list */
214: }
215: endpwent ();
216: endgrent (); /* close passwd and group files */
217: break;
218:
219:
220: case 'd': /* delete some permissions */
221: at (-1, 1);
222: printf ("Delete entry #: ");
223: if ((c = gchar ()) == '\n')
224: break; /* null */
225: printf ("\b");
226: which = getnum (c); /* grab number */
227: if (which <= 0)
228: break; /* don't update */
229: if (which > items || c < '0' || c > '9')
230: {
231: printf ("Bad entry");
232: break;
233: }
234: which--; /* adjust to zero base */
235: getname (&me, 0); /* grab my name */
236: if ((alist[which].ptype = PERMUSER) && strcmp (me.aname, alist[which].name) == 0)
237: {
238: printf (" Can't Delete self");
239: break;
240: }
241: items--; /* decrement count and */
242: for (i = which; i < items; i++) /* tamp down list */
243: {
244: alist[i].ptype = alist[i + 1].ptype;
245: strmove (alist[i + 1].name, alist[i].name);
246: alist[i].perms = alist[i + 1].perms;
247: }
248: changed = 1; /* mark it as changed */
249: goto redraw; /* show updated screen */
250:
251: case 'm': /* modify someones permission */
252: at (-1, 1); /* grab which slot */
253: printf ("Modify entry #: ");
254: if ((c = gchar ()) == '\n')
255: break; /* null entry */
256: printf ("\b");
257: which = getnum (c);
258: if (which <= 0)
259: break;
260: if (which > items || c < '0' || c > '9')/* check its validity */
261: {
262: at (-2, 1);
263: printf ("Bad entry");
264: break;
265: }
266: which--; /* adjust to zero base */
267: getmode (&alist[which].perms);
268: changed = 1; /* set changed flag */
269: goto redraw; /* repaint screen */
270:
271: default: /* wrong key dummy */
272: printf ("\07");
273: break;
274: }
275: }
276: }
277:
278: /*
279: * Grab a set of permissions
280: */
281: getmode (zmode)
282: short *zmode;
283: { /* grab a mode from the tty */
284: char c;
285: short mode; /* resulting mode */
286:
287: mode = *zmode; /* set to what passed in */
288:
289: while (1)
290: {
291: at (-2, 40);
292: printf ("%*s", 25, " ");
293: at (-2, 40);
294: printf (" Mode: %s", map[mode]);
295: at (-1, 40);
296: printf ("Mods: ");
297: c = gchar ();
298: switch (c)
299: {
300: case 'a': /* toggle answer */
301: if (mode & WRITOK)
302: break; /* write supersedese */
303: if (mode & RESPOK)
304: mode &= NOT RESPOK;
305: else
306: mode |= RESPOK;
307: break;
308:
309: case 'r': /* toggle read */
310: if (mode & DRCTOK)
311: break; /* director supersedes */
312: if (mode & READOK)
313: mode &= NOT READOK;
314: else
315: mode |= READOK;
316: break;
317:
318: case 'w': /* toggle write */
319: if (mode & DRCTOK)
320: break; /* director supersedes */
321: if (mode & WRITOK)
322: mode &= NOT WRITOK;
323: else
324: mode |= WRITOK + RESPOK;
325: break;
326:
327: case 'd': /* toggle director */
328: if (mode & DRCTOK)
329: mode &= NOT DRCTOK;
330: else
331: mode |= DRCTOK + READOK + WRITOK + RESPOK;
332: break;
333:
334: case 'n': /* set to null */
335: mode = 0;
336: break;
337:
338: case '\n': /* acceptable to him */
339: #ifdef K_KEY
340: case 'k': /* same as q */
341: case 'K':
342: #endif K_KEY
343: case 'q':
344: case 'Q':
345: return (*zmode = mode); /* do both ways */
346:
347: default:
348: printf ("\07 (d,r,w,a,n,q,k<cr>)");
349: break;
350: }
351: }
352: }
353: plotit (alist, base, items) /* plot the list */
354: struct perm_f alist[];
355: int base;
356: int items;
357: {
358: register int atrow,
359: atcol,
360: i;
361:
362: atrow = 1;
363: atcol = 1;
364: if (base != 0)
365: {
366: at (atrow++, atcol);
367: printf (" -- More -- ");
368: }
369: for (i = base; i < items && atrow < length; i++)
370: {
371: at (atrow++, atcol);
372: printf ("%2d %s%-*s %s", i + 1, kmap[alist[i].ptype], NAMESZ,
373: alist[i].name, map[alist[i].perms]);
374: }
375: if (i < items) /* tell him more */
376: {
377: at (atrow++, atcol);
378: printf (" -- More -- ");
379: }
380: }
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