Annotation of src/usr.bin/mandoc/manpath.c, Revision 1.17
1.17 ! schwarze 1: /* $OpenBSD: manpath.c,v 1.16 2015/10/11 21:06:59 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>
1.16 schwarze 22: #include <err.h>
1.1 schwarze 23: #include <limits.h>
24: #include <stdio.h>
25: #include <stdlib.h>
26: #include <string.h>
27:
1.8 schwarze 28: #include "mandoc_aux.h"
1.14 schwarze 29: #include "manconf.h"
1.1 schwarze 30:
31: #define MAN_CONF_FILE "/etc/man.conf"
1.12 schwarze 32: #define MANPATH_DEFAULT "/usr/share/man:/usr/X11R6/man:/usr/local/man"
1.1 schwarze 33:
1.14 schwarze 34: static void manconf_file(struct manconf *, const char *);
1.11 schwarze 35: static void manpath_add(struct manpaths *, const char *, int);
36: static void manpath_parseline(struct manpaths *, char *, int);
1.1 schwarze 37:
1.14 schwarze 38:
1.1 schwarze 39: void
1.14 schwarze 40: manconf_parse(struct manconf *conf, const char *file,
1.2 schwarze 41: char *defp, char *auxp)
1.1 schwarze 42: {
1.4 schwarze 43: char *insert;
1.1 schwarze 44:
1.4 schwarze 45: /* Always prepend -m. */
1.14 schwarze 46: manpath_parseline(&conf->manpath, auxp, 1);
1.1 schwarze 47:
1.4 schwarze 48: /* If -M is given, it overrides everything else. */
49: if (NULL != defp) {
1.14 schwarze 50: manpath_parseline(&conf->manpath, defp, 1);
1.4 schwarze 51: return;
52: }
53:
54: /* MANPATH and man.conf(5) cooperate. */
55: defp = getenv("MANPATH");
56: if (NULL == file)
57: file = MAN_CONF_FILE;
58:
59: /* No MANPATH; use man.conf(5) only. */
60: if (NULL == defp || '\0' == defp[0]) {
1.14 schwarze 61: manconf_file(conf, file);
1.4 schwarze 62: return;
63: }
64:
65: /* Prepend man.conf(5) to MANPATH. */
66: if (':' == defp[0]) {
1.14 schwarze 67: manconf_file(conf, file);
68: manpath_parseline(&conf->manpath, defp, 0);
1.4 schwarze 69: return;
70: }
1.1 schwarze 71:
1.4 schwarze 72: /* Append man.conf(5) to MANPATH. */
1.6 schwarze 73: if (':' == defp[strlen(defp) - 1]) {
1.14 schwarze 74: manpath_parseline(&conf->manpath, defp, 0);
75: manconf_file(conf, file);
1.4 schwarze 76: return;
77: }
78:
79: /* Insert man.conf(5) into MANPATH. */
80: insert = strstr(defp, "::");
81: if (NULL != insert) {
82: *insert++ = '\0';
1.14 schwarze 83: manpath_parseline(&conf->manpath, defp, 0);
84: manconf_file(conf, file);
85: manpath_parseline(&conf->manpath, insert + 1, 0);
1.4 schwarze 86: return;
87: }
88:
89: /* MANPATH overrides man.conf(5) completely. */
1.14 schwarze 90: manpath_parseline(&conf->manpath, defp, 0);
1.1 schwarze 91: }
92:
93: /*
94: * Parse a FULL pathname from a colon-separated list of arrays.
95: */
1.3 schwarze 96: static void
1.11 schwarze 97: manpath_parseline(struct manpaths *dirs, char *path, int complain)
1.1 schwarze 98: {
99: char *dir;
100:
101: if (NULL == path)
102: return;
103:
104: for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":"))
1.11 schwarze 105: manpath_add(dirs, dir, complain);
1.1 schwarze 106: }
107:
108: /*
109: * Add a directory to the array, ignoring bad directories.
110: * Grow the array one-by-one for simplicity's sake.
111: */
112: static void
1.11 schwarze 113: manpath_add(struct manpaths *dirs, const char *dir, int complain)
1.1 schwarze 114: {
115: char buf[PATH_MAX];
1.11 schwarze 116: struct stat sb;
1.1 schwarze 117: char *cp;
1.6 schwarze 118: size_t i;
1.1 schwarze 119:
1.11 schwarze 120: if (NULL == (cp = realpath(dir, buf))) {
1.16 schwarze 121: if (complain)
122: warn("manpath: %s", dir);
1.1 schwarze 123: return;
1.11 schwarze 124: }
1.1 schwarze 125:
126: for (i = 0; i < dirs->sz; i++)
127: if (0 == strcmp(dirs->paths[i], dir))
128: return;
129:
1.11 schwarze 130: if (stat(cp, &sb) == -1) {
1.16 schwarze 131: if (complain)
132: warn("manpath: %s", dir);
1.11 schwarze 133: return;
134: }
135:
1.10 schwarze 136: dirs->paths = mandoc_reallocarray(dirs->paths,
137: dirs->sz + 1, sizeof(char *));
1.1 schwarze 138:
139: dirs->paths[dirs->sz++] = mandoc_strdup(cp);
140: }
141:
142: void
1.14 schwarze 143: manconf_free(struct manconf *conf)
1.1 schwarze 144: {
1.6 schwarze 145: size_t i;
1.1 schwarze 146:
1.14 schwarze 147: for (i = 0; i < conf->manpath.sz; i++)
148: free(conf->manpath.paths[i]);
1.1 schwarze 149:
1.14 schwarze 150: free(conf->manpath.paths);
151: free(conf->output.includes);
152: free(conf->output.man);
153: free(conf->output.paper);
154: free(conf->output.style);
1.1 schwarze 155: }
156:
1.14 schwarze 157: static void
158: manconf_file(struct manconf *conf, const char *file)
1.1 schwarze 159: {
1.14 schwarze 160: const char *const toks[] = { "manpath", "output", "_whatdb" };
1.15 schwarze 161: char manpath_default[] = MANPATH_DEFAULT;
1.13 schwarze 162:
1.1 schwarze 163: FILE *stream;
1.17 ! schwarze 164: char *line, *cp, *ep;
! 165: size_t linesz, tok, toklen;
! 166: ssize_t linelen;
1.1 schwarze 167:
1.13 schwarze 168: if ((stream = fopen(file, "r")) == NULL)
1.15 schwarze 169: goto out;
1.1 schwarze 170:
1.17 ! schwarze 171: line = NULL;
! 172: linesz = 0;
! 173:
! 174: while ((linelen = getline(&line, &linesz, stream)) != -1) {
! 175: cp = line;
! 176: ep = cp + linelen;
1.13 schwarze 177: if (ep[-1] != '\n')
1.1 schwarze 178: break;
1.13 schwarze 179: *--ep = '\0';
180: while (isspace((unsigned char)*cp))
181: cp++;
182: if (*cp == '#')
1.1 schwarze 183: continue;
1.13 schwarze 184:
185: for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
1.17 ! schwarze 186: toklen = strlen(toks[tok]);
! 187: if (cp + toklen < ep &&
! 188: isspace((unsigned char)cp[toklen]) &&
! 189: strncmp(cp, toks[tok], toklen) == 0) {
! 190: cp += toklen;
1.13 schwarze 191: while (isspace((unsigned char)*cp))
192: cp++;
193: break;
194: }
195: }
196:
197: switch (tok) {
1.14 schwarze 198: case 2: /* _whatdb */
1.13 schwarze 199: while (ep > cp && ep[-1] != '/')
200: ep--;
201: if (ep == cp)
202: continue;
203: *ep = '\0';
204: /* FALLTHROUGH */
205: case 0: /* manpath */
1.14 schwarze 206: manpath_add(&conf->manpath, cp, 0);
1.15 schwarze 207: *manpath_default = '\0';
1.14 schwarze 208: break;
209: case 1: /* output */
210: manconf_output(&conf->output, cp);
1.13 schwarze 211: break;
212: default:
213: break;
214: }
1.1 schwarze 215: }
1.17 ! schwarze 216: free(line);
1.15 schwarze 217: fclose(stream);
1.1 schwarze 218:
1.15 schwarze 219: out:
220: if (*manpath_default != '\0')
221: manpath_parseline(&conf->manpath, manpath_default, 0);
1.14 schwarze 222: }
223:
224: void
225: manconf_output(struct manoutput *conf, const char *cp)
226: {
227: const char *const toks[] = {
228: "includes", "man", "paper", "style",
229: "indent", "width", "fragment", "mdoc"
230: };
231:
232: size_t len, tok;
233:
234: for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
235: len = strlen(toks[tok]);
236: if ( ! strncmp(cp, toks[tok], len) &&
237: strchr(" = ", cp[len]) != NULL) {
238: cp += len;
239: if (*cp == '=')
240: cp++;
241: while (isspace((unsigned char)*cp))
242: cp++;
243: break;
244: }
245: }
246:
247: if (tok < 6 && *cp == '\0')
248: return;
249:
250: switch (tok) {
251: case 0:
252: if (conf->includes == NULL)
253: conf->includes = mandoc_strdup(cp);
254: break;
255: case 1:
256: if (conf->man == NULL)
257: conf->man = mandoc_strdup(cp);
258: break;
259: case 2:
260: if (conf->paper == NULL)
261: conf->paper = mandoc_strdup(cp);
262: break;
263: case 3:
264: if (conf->style == NULL)
265: conf->style = mandoc_strdup(cp);
266: break;
267: case 4:
268: if (conf->indent == 0)
269: conf->indent = strtonum(cp, 0, 1000, NULL);
270: break;
271: case 5:
272: if (conf->width == 0)
273: conf->width = strtonum(cp, 58, 1000, NULL);
274: break;
275: case 6:
276: conf->fragment = 1;
277: break;
278: case 7:
279: conf->mdoc = 1;
280: break;
281: default:
282: break;
283: }
1.1 schwarze 284: }
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