Annotation of src/usr.bin/mandoc/manpath.c, Revision 1.15
1.15 ! schwarze 1: /* $OpenBSD: manpath.c,v 1.14 2015/03/27 17:36:56 schwarze Exp $ */
1.1 schwarze 2: /*
1.12 schwarze 3: * Copyright (c) 2011, 2014, 2015 Ingo Schwarze <schwarze@openbsd.org>
1.1 schwarze 4: * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
1.13 schwarze 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1 schwarze 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.13 schwarze 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1 schwarze 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
1.11 schwarze 18: #include <sys/types.h>
19: #include <sys/stat.h>
1.3 schwarze 20:
1.1 schwarze 21: #include <ctype.h>
22: #include <limits.h>
23: #include <stdio.h>
24: #include <stdlib.h>
25: #include <string.h>
26:
1.8 schwarze 27: #include "mandoc_aux.h"
1.14 schwarze 28: #include "manconf.h"
1.1 schwarze 29:
30: #define MAN_CONF_FILE "/etc/man.conf"
1.12 schwarze 31: #define MANPATH_DEFAULT "/usr/share/man:/usr/X11R6/man:/usr/local/man"
1.1 schwarze 32:
1.14 schwarze 33: static void manconf_file(struct manconf *, const char *);
1.11 schwarze 34: static void manpath_add(struct manpaths *, const char *, int);
35: static void manpath_parseline(struct manpaths *, char *, int);
1.1 schwarze 36:
1.14 schwarze 37:
1.1 schwarze 38: void
1.14 schwarze 39: manconf_parse(struct manconf *conf, const char *file,
1.2 schwarze 40: char *defp, char *auxp)
1.1 schwarze 41: {
1.4 schwarze 42: char *insert;
1.1 schwarze 43:
1.4 schwarze 44: /* Always prepend -m. */
1.14 schwarze 45: manpath_parseline(&conf->manpath, auxp, 1);
1.1 schwarze 46:
1.4 schwarze 47: /* If -M is given, it overrides everything else. */
48: if (NULL != defp) {
1.14 schwarze 49: manpath_parseline(&conf->manpath, defp, 1);
1.4 schwarze 50: return;
51: }
52:
53: /* MANPATH and man.conf(5) cooperate. */
54: defp = getenv("MANPATH");
55: if (NULL == file)
56: file = MAN_CONF_FILE;
57:
58: /* No MANPATH; use man.conf(5) only. */
59: if (NULL == defp || '\0' == defp[0]) {
1.14 schwarze 60: manconf_file(conf, file);
1.4 schwarze 61: return;
62: }
63:
64: /* Prepend man.conf(5) to MANPATH. */
65: if (':' == defp[0]) {
1.14 schwarze 66: manconf_file(conf, file);
67: manpath_parseline(&conf->manpath, defp, 0);
1.4 schwarze 68: return;
69: }
1.1 schwarze 70:
1.4 schwarze 71: /* Append man.conf(5) to MANPATH. */
1.6 schwarze 72: if (':' == defp[strlen(defp) - 1]) {
1.14 schwarze 73: manpath_parseline(&conf->manpath, defp, 0);
74: manconf_file(conf, file);
1.4 schwarze 75: return;
76: }
77:
78: /* Insert man.conf(5) into MANPATH. */
79: insert = strstr(defp, "::");
80: if (NULL != insert) {
81: *insert++ = '\0';
1.14 schwarze 82: manpath_parseline(&conf->manpath, defp, 0);
83: manconf_file(conf, file);
84: manpath_parseline(&conf->manpath, insert + 1, 0);
1.4 schwarze 85: return;
86: }
87:
88: /* MANPATH overrides man.conf(5) completely. */
1.14 schwarze 89: manpath_parseline(&conf->manpath, defp, 0);
1.1 schwarze 90: }
91:
92: /*
93: * Parse a FULL pathname from a colon-separated list of arrays.
94: */
1.3 schwarze 95: static void
1.11 schwarze 96: manpath_parseline(struct manpaths *dirs, char *path, int complain)
1.1 schwarze 97: {
98: char *dir;
99:
100: if (NULL == path)
101: return;
102:
103: for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":"))
1.11 schwarze 104: manpath_add(dirs, dir, complain);
1.1 schwarze 105: }
106:
107: /*
108: * Add a directory to the array, ignoring bad directories.
109: * Grow the array one-by-one for simplicity's sake.
110: */
111: static void
1.11 schwarze 112: manpath_add(struct manpaths *dirs, const char *dir, int complain)
1.1 schwarze 113: {
114: char buf[PATH_MAX];
1.11 schwarze 115: struct stat sb;
1.1 schwarze 116: char *cp;
1.6 schwarze 117: size_t i;
1.1 schwarze 118:
1.11 schwarze 119: if (NULL == (cp = realpath(dir, buf))) {
120: if (complain) {
121: fputs("manpath: ", stderr);
122: perror(dir);
123: }
1.1 schwarze 124: return;
1.11 schwarze 125: }
1.1 schwarze 126:
127: for (i = 0; i < dirs->sz; i++)
128: if (0 == strcmp(dirs->paths[i], dir))
129: return;
130:
1.11 schwarze 131: if (stat(cp, &sb) == -1) {
132: if (complain) {
133: fputs("manpath: ", stderr);
134: perror(dir);
135: }
136: return;
137: }
138:
1.10 schwarze 139: dirs->paths = mandoc_reallocarray(dirs->paths,
140: dirs->sz + 1, sizeof(char *));
1.1 schwarze 141:
142: dirs->paths[dirs->sz++] = mandoc_strdup(cp);
143: }
144:
145: void
1.14 schwarze 146: manconf_free(struct manconf *conf)
1.1 schwarze 147: {
1.6 schwarze 148: size_t i;
1.1 schwarze 149:
1.14 schwarze 150: for (i = 0; i < conf->manpath.sz; i++)
151: free(conf->manpath.paths[i]);
1.1 schwarze 152:
1.14 schwarze 153: free(conf->manpath.paths);
154: free(conf->output.includes);
155: free(conf->output.man);
156: free(conf->output.paper);
157: free(conf->output.style);
1.1 schwarze 158: }
159:
1.14 schwarze 160: static void
161: manconf_file(struct manconf *conf, const char *file)
1.1 schwarze 162: {
1.14 schwarze 163: const char *const toks[] = { "manpath", "output", "_whatdb" };
1.15 ! schwarze 164: char manpath_default[] = MANPATH_DEFAULT;
1.13 schwarze 165:
1.1 schwarze 166: FILE *stream;
1.13 schwarze 167: char *cp, *ep;
168: size_t len, tok;
1.1 schwarze 169:
1.13 schwarze 170: if ((stream = fopen(file, "r")) == NULL)
1.15 ! schwarze 171: goto out;
1.1 schwarze 172:
1.13 schwarze 173: while ((cp = fgetln(stream, &len)) != NULL) {
174: ep = cp + len;
175: if (ep[-1] != '\n')
1.1 schwarze 176: break;
1.13 schwarze 177: *--ep = '\0';
178: while (isspace((unsigned char)*cp))
179: cp++;
180: if (*cp == '#')
1.1 schwarze 181: continue;
1.13 schwarze 182:
183: for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
184: len = strlen(toks[tok]);
185: if (cp + len < ep &&
186: isspace((unsigned char)cp[len]) &&
187: !strncmp(cp, toks[tok], len)) {
188: cp += len;
189: while (isspace((unsigned char)*cp))
190: cp++;
191: break;
192: }
193: }
194:
195: switch (tok) {
1.14 schwarze 196: case 2: /* _whatdb */
1.13 schwarze 197: while (ep > cp && ep[-1] != '/')
198: ep--;
199: if (ep == cp)
200: continue;
201: *ep = '\0';
202: /* FALLTHROUGH */
203: case 0: /* manpath */
1.14 schwarze 204: manpath_add(&conf->manpath, cp, 0);
1.15 ! schwarze 205: *manpath_default = '\0';
1.14 schwarze 206: break;
207: case 1: /* output */
208: manconf_output(&conf->output, cp);
1.13 schwarze 209: break;
210: default:
211: break;
212: }
1.1 schwarze 213: }
1.15 ! schwarze 214: fclose(stream);
1.1 schwarze 215:
1.15 ! schwarze 216: out:
! 217: if (*manpath_default != '\0')
! 218: manpath_parseline(&conf->manpath, manpath_default, 0);
1.14 schwarze 219: }
220:
221: void
222: manconf_output(struct manoutput *conf, const char *cp)
223: {
224: const char *const toks[] = {
225: "includes", "man", "paper", "style",
226: "indent", "width", "fragment", "mdoc"
227: };
228:
229: size_t len, tok;
230:
231: for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
232: len = strlen(toks[tok]);
233: if ( ! strncmp(cp, toks[tok], len) &&
234: strchr(" = ", cp[len]) != NULL) {
235: cp += len;
236: if (*cp == '=')
237: cp++;
238: while (isspace((unsigned char)*cp))
239: cp++;
240: break;
241: }
242: }
243:
244: if (tok < 6 && *cp == '\0')
245: return;
246:
247: switch (tok) {
248: case 0:
249: if (conf->includes == NULL)
250: conf->includes = mandoc_strdup(cp);
251: break;
252: case 1:
253: if (conf->man == NULL)
254: conf->man = mandoc_strdup(cp);
255: break;
256: case 2:
257: if (conf->paper == NULL)
258: conf->paper = mandoc_strdup(cp);
259: break;
260: case 3:
261: if (conf->style == NULL)
262: conf->style = mandoc_strdup(cp);
263: break;
264: case 4:
265: if (conf->indent == 0)
266: conf->indent = strtonum(cp, 0, 1000, NULL);
267: break;
268: case 5:
269: if (conf->width == 0)
270: conf->width = strtonum(cp, 58, 1000, NULL);
271: break;
272: case 6:
273: conf->fragment = 1;
274: break;
275: case 7:
276: conf->mdoc = 1;
277: break;
278: default:
279: break;
280: }
1.1 schwarze 281: }
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