Annotation of src/usr.bin/mandoc/manpath.c, Revision 1.21
1.21 ! schwarze 1: /* $OpenBSD: manpath.c,v 1.20 2017/02/10 15:44:31 schwarze Exp $ */
1.1 schwarze 2: /*
1.19 schwarze 3: * Copyright (c) 2011, 2014, 2015, 2017 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;
1.18 millert 176: ep = cp + linelen - 1;
177: while (ep > cp && isspace((unsigned char)*ep))
178: *ep-- = '\0';
1.13 schwarze 179: while (isspace((unsigned char)*cp))
180: cp++;
1.18 millert 181: if (cp == ep || *cp == '#')
1.1 schwarze 182: continue;
1.13 schwarze 183:
184: for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
1.17 schwarze 185: toklen = strlen(toks[tok]);
186: if (cp + toklen < ep &&
187: isspace((unsigned char)cp[toklen]) &&
188: strncmp(cp, toks[tok], toklen) == 0) {
189: cp += toklen;
1.13 schwarze 190: while (isspace((unsigned char)*cp))
191: cp++;
192: break;
193: }
194: }
195:
196: switch (tok) {
1.14 schwarze 197: case 2: /* _whatdb */
1.13 schwarze 198: while (ep > cp && ep[-1] != '/')
199: ep--;
200: if (ep == cp)
201: continue;
202: *ep = '\0';
203: /* FALLTHROUGH */
204: case 0: /* manpath */
1.14 schwarze 205: manpath_add(&conf->manpath, cp, 0);
1.15 schwarze 206: *manpath_default = '\0';
1.14 schwarze 207: break;
208: case 1: /* output */
1.19 schwarze 209: manconf_output(&conf->output, cp, 1);
1.13 schwarze 210: break;
211: default:
212: break;
213: }
1.1 schwarze 214: }
1.17 schwarze 215: free(line);
1.15 schwarze 216: fclose(stream);
1.1 schwarze 217:
1.15 schwarze 218: out:
219: if (*manpath_default != '\0')
220: manpath_parseline(&conf->manpath, manpath_default, 0);
1.14 schwarze 221: }
222:
1.19 schwarze 223: int
224: manconf_output(struct manoutput *conf, const char *cp, int fromfile)
1.14 schwarze 225: {
226: const char *const toks[] = {
227: "includes", "man", "paper", "style",
1.20 schwarze 228: "indent", "width", "fragment", "mdoc", "noval"
1.14 schwarze 229: };
230:
1.19 schwarze 231: const char *errstr;
232: char *oldval;
233: size_t len, tok;
1.14 schwarze 234:
235: for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
236: len = strlen(toks[tok]);
237: if ( ! strncmp(cp, toks[tok], len) &&
238: strchr(" = ", cp[len]) != NULL) {
239: cp += len;
240: if (*cp == '=')
241: cp++;
242: while (isspace((unsigned char)*cp))
243: cp++;
244: break;
245: }
246: }
247:
1.19 schwarze 248: if (tok < 6 && *cp == '\0') {
249: warnx("-O %s=?: Missing argument value", toks[tok]);
250: return -1;
251: }
252: if ((tok == 6 || tok == 7) && *cp != '\0') {
253: warnx("-O %s: Does not take a value: %s", toks[tok], cp);
254: return -1;
255: }
1.14 schwarze 256:
257: switch (tok) {
258: case 0:
1.19 schwarze 259: if (conf->includes != NULL) {
260: oldval = mandoc_strdup(conf->includes);
261: break;
262: }
263: conf->includes = mandoc_strdup(cp);
264: return 0;
1.14 schwarze 265: case 1:
1.19 schwarze 266: if (conf->man != NULL) {
267: oldval = mandoc_strdup(conf->man);
268: break;
269: }
270: conf->man = mandoc_strdup(cp);
271: return 0;
1.14 schwarze 272: case 2:
1.19 schwarze 273: if (conf->paper != NULL) {
274: oldval = mandoc_strdup(conf->paper);
275: break;
276: }
277: conf->paper = mandoc_strdup(cp);
278: return 0;
1.14 schwarze 279: case 3:
1.19 schwarze 280: if (conf->style != NULL) {
281: oldval = mandoc_strdup(conf->style);
282: break;
283: }
284: conf->style = mandoc_strdup(cp);
285: return 0;
1.14 schwarze 286: case 4:
1.19 schwarze 287: if (conf->indent) {
288: mandoc_asprintf(&oldval, "%zu", conf->indent);
289: break;
290: }
291: conf->indent = strtonum(cp, 0, 1000, &errstr);
292: if (errstr == NULL)
293: return 0;
294: warnx("-O indent=%s is %s", cp, errstr);
295: return -1;
1.14 schwarze 296: case 5:
1.19 schwarze 297: if (conf->width) {
298: mandoc_asprintf(&oldval, "%zu", conf->width);
299: break;
300: }
1.21 ! schwarze 301: conf->width = strtonum(cp, 1, 1000, &errstr);
1.19 schwarze 302: if (errstr == NULL)
303: return 0;
304: warnx("-O width=%s is %s", cp, errstr);
305: return -1;
1.14 schwarze 306: case 6:
307: conf->fragment = 1;
1.19 schwarze 308: return 0;
1.14 schwarze 309: case 7:
310: conf->mdoc = 1;
1.20 schwarze 311: return 0;
312: case 8:
313: conf->noval = 1;
1.19 schwarze 314: return 0;
1.14 schwarze 315: default:
1.19 schwarze 316: if (fromfile)
317: warnx("-O %s: Bad argument", cp);
318: return -1;
1.14 schwarze 319: }
1.19 schwarze 320: if (fromfile == 0)
321: warnx("-O %s=%s: Option already set to %s",
322: toks[tok], cp, oldval);
323: free(oldval);
324: return -1;
1.1 schwarze 325: }
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