Annotation of src/usr.bin/mandoc/manpath.c, Revision 1.27
1.27 ! schwarze 1: /* $OpenBSD: manpath.c,v 1.26 2019/05/03 18:38:45 schwarze Exp $ */
1.1 schwarze 2: /*
1.27 ! schwarze 3: * Copyright (c) 2011,2014,2015,2017-2019 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>
1.27 ! schwarze 22: #include <errno.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"
1.27 ! schwarze 29: #include "mandoc.h"
1.14 schwarze 30: #include "manconf.h"
1.1 schwarze 31:
32: #define MAN_CONF_FILE "/etc/man.conf"
1.22 schwarze 33: #define MANPATH_BASE "/usr/share/man:/usr/X11R6/man"
1.12 schwarze 34: #define MANPATH_DEFAULT "/usr/share/man:/usr/X11R6/man:/usr/local/man"
1.1 schwarze 35:
1.14 schwarze 36: static void manconf_file(struct manconf *, const char *);
1.27 ! schwarze 37: static void manpath_add(struct manpaths *, const char *, char);
! 38: static void manpath_parseline(struct manpaths *, char *, char);
1.1 schwarze 39:
1.14 schwarze 40:
1.1 schwarze 41: void
1.14 schwarze 42: manconf_parse(struct manconf *conf, const char *file,
1.2 schwarze 43: char *defp, char *auxp)
1.1 schwarze 44: {
1.4 schwarze 45: char *insert;
1.1 schwarze 46:
1.4 schwarze 47: /* Always prepend -m. */
1.27 ! schwarze 48: manpath_parseline(&conf->manpath, auxp, 'm');
1.1 schwarze 49:
1.4 schwarze 50: /* If -M is given, it overrides everything else. */
51: if (NULL != defp) {
1.27 ! schwarze 52: manpath_parseline(&conf->manpath, defp, 'M');
1.4 schwarze 53: return;
54: }
55:
56: /* MANPATH and man.conf(5) cooperate. */
57: defp = getenv("MANPATH");
58: if (NULL == file)
59: file = MAN_CONF_FILE;
60:
61: /* No MANPATH; use man.conf(5) only. */
62: if (NULL == defp || '\0' == defp[0]) {
1.14 schwarze 63: manconf_file(conf, file);
1.4 schwarze 64: return;
65: }
66:
67: /* Prepend man.conf(5) to MANPATH. */
68: if (':' == defp[0]) {
1.14 schwarze 69: manconf_file(conf, file);
1.27 ! schwarze 70: manpath_parseline(&conf->manpath, defp, '\0');
1.4 schwarze 71: return;
72: }
1.1 schwarze 73:
1.4 schwarze 74: /* Append man.conf(5) to MANPATH. */
1.6 schwarze 75: if (':' == defp[strlen(defp) - 1]) {
1.27 ! schwarze 76: manpath_parseline(&conf->manpath, defp, '\0');
1.14 schwarze 77: manconf_file(conf, file);
1.4 schwarze 78: return;
79: }
80:
81: /* Insert man.conf(5) into MANPATH. */
82: insert = strstr(defp, "::");
83: if (NULL != insert) {
84: *insert++ = '\0';
1.27 ! schwarze 85: manpath_parseline(&conf->manpath, defp, '\0');
1.14 schwarze 86: manconf_file(conf, file);
1.27 ! schwarze 87: manpath_parseline(&conf->manpath, insert + 1, '\0');
1.4 schwarze 88: return;
89: }
90:
91: /* MANPATH overrides man.conf(5) completely. */
1.27 ! schwarze 92: manpath_parseline(&conf->manpath, defp, '\0');
1.22 schwarze 93: }
94:
95: void
96: manpath_base(struct manpaths *dirs)
97: {
98: char path_base[] = MANPATH_BASE;
1.27 ! schwarze 99: manpath_parseline(dirs, path_base, '\0');
1.1 schwarze 100: }
101:
102: /*
103: * Parse a FULL pathname from a colon-separated list of arrays.
104: */
1.3 schwarze 105: static void
1.27 ! schwarze 106: manpath_parseline(struct manpaths *dirs, char *path, char option)
1.1 schwarze 107: {
108: char *dir;
109:
110: if (NULL == path)
111: return;
112:
113: for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":"))
1.27 ! schwarze 114: manpath_add(dirs, dir, option);
1.1 schwarze 115: }
116:
117: /*
118: * Add a directory to the array, ignoring bad directories.
119: * Grow the array one-by-one for simplicity's sake.
120: */
121: static void
1.27 ! schwarze 122: manpath_add(struct manpaths *dirs, const char *dir, char option)
1.1 schwarze 123: {
124: char buf[PATH_MAX];
1.11 schwarze 125: struct stat sb;
1.1 schwarze 126: char *cp;
1.6 schwarze 127: size_t i;
1.1 schwarze 128:
1.27 ! schwarze 129: if ((cp = realpath(dir, buf)) == NULL)
! 130: goto fail;
1.1 schwarze 131:
132: for (i = 0; i < dirs->sz; i++)
1.27 ! schwarze 133: if (strcmp(dirs->paths[i], dir) == 0)
1.1 schwarze 134: return;
135:
1.27 ! schwarze 136: if (stat(cp, &sb) == -1)
! 137: goto fail;
1.11 schwarze 138:
1.10 schwarze 139: dirs->paths = mandoc_reallocarray(dirs->paths,
1.27 ! schwarze 140: dirs->sz + 1, sizeof(*dirs->paths));
! 141: dirs->paths[dirs->sz++] = mandoc_strdup(cp);
! 142: return;
1.1 schwarze 143:
1.27 ! schwarze 144: fail:
! 145: if (option != '\0')
! 146: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0,
! 147: "-%c %s: %s", option, dir, strerror(errno));
1.1 schwarze 148: }
149:
150: void
1.14 schwarze 151: manconf_free(struct manconf *conf)
1.1 schwarze 152: {
1.6 schwarze 153: size_t i;
1.1 schwarze 154:
1.14 schwarze 155: for (i = 0; i < conf->manpath.sz; i++)
156: free(conf->manpath.paths[i]);
1.1 schwarze 157:
1.14 schwarze 158: free(conf->manpath.paths);
159: free(conf->output.includes);
160: free(conf->output.man);
161: free(conf->output.paper);
162: free(conf->output.style);
1.1 schwarze 163: }
164:
1.14 schwarze 165: static void
166: manconf_file(struct manconf *conf, const char *file)
1.1 schwarze 167: {
1.14 schwarze 168: const char *const toks[] = { "manpath", "output", "_whatdb" };
1.15 schwarze 169: char manpath_default[] = MANPATH_DEFAULT;
1.13 schwarze 170:
1.1 schwarze 171: FILE *stream;
1.17 schwarze 172: char *line, *cp, *ep;
173: size_t linesz, tok, toklen;
174: ssize_t linelen;
1.1 schwarze 175:
1.13 schwarze 176: if ((stream = fopen(file, "r")) == NULL)
1.15 schwarze 177: goto out;
1.1 schwarze 178:
1.17 schwarze 179: line = NULL;
180: linesz = 0;
181:
182: while ((linelen = getline(&line, &linesz, stream)) != -1) {
183: cp = line;
1.18 millert 184: ep = cp + linelen - 1;
185: while (ep > cp && isspace((unsigned char)*ep))
186: *ep-- = '\0';
1.13 schwarze 187: while (isspace((unsigned char)*cp))
188: cp++;
1.18 millert 189: if (cp == ep || *cp == '#')
1.1 schwarze 190: continue;
1.13 schwarze 191:
192: for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
1.17 schwarze 193: toklen = strlen(toks[tok]);
194: if (cp + toklen < ep &&
195: isspace((unsigned char)cp[toklen]) &&
196: strncmp(cp, toks[tok], toklen) == 0) {
197: cp += toklen;
1.13 schwarze 198: while (isspace((unsigned char)*cp))
199: cp++;
200: break;
201: }
202: }
203:
204: switch (tok) {
1.14 schwarze 205: case 2: /* _whatdb */
1.13 schwarze 206: while (ep > cp && ep[-1] != '/')
207: ep--;
208: if (ep == cp)
209: continue;
210: *ep = '\0';
211: /* FALLTHROUGH */
212: case 0: /* manpath */
1.27 ! schwarze 213: manpath_add(&conf->manpath, cp, '\0');
1.15 schwarze 214: *manpath_default = '\0';
1.14 schwarze 215: break;
216: case 1: /* output */
1.19 schwarze 217: manconf_output(&conf->output, cp, 1);
1.13 schwarze 218: break;
219: default:
220: break;
221: }
1.1 schwarze 222: }
1.17 schwarze 223: free(line);
1.15 schwarze 224: fclose(stream);
1.1 schwarze 225:
1.15 schwarze 226: out:
227: if (*manpath_default != '\0')
1.27 ! schwarze 228: manpath_parseline(&conf->manpath, manpath_default, '\0');
1.14 schwarze 229: }
230:
1.19 schwarze 231: int
232: manconf_output(struct manoutput *conf, const char *cp, int fromfile)
1.14 schwarze 233: {
234: const char *const toks[] = {
1.24 schwarze 235: "includes", "man", "paper", "style", "indent", "width",
236: "tag", "fragment", "mdoc", "noval", "toc"
1.14 schwarze 237: };
1.25 anton 238: const size_t ntoks = sizeof(toks) / sizeof(toks[0]);
1.14 schwarze 239:
1.19 schwarze 240: const char *errstr;
241: char *oldval;
242: size_t len, tok;
1.14 schwarze 243:
1.25 anton 244: for (tok = 0; tok < ntoks; tok++) {
1.14 schwarze 245: len = strlen(toks[tok]);
1.27 ! schwarze 246: if (strncmp(cp, toks[tok], len) == 0 &&
1.14 schwarze 247: strchr(" = ", cp[len]) != NULL) {
248: cp += len;
249: if (*cp == '=')
250: cp++;
251: while (isspace((unsigned char)*cp))
252: cp++;
253: break;
254: }
255: }
256:
1.19 schwarze 257: if (tok < 6 && *cp == '\0') {
1.27 ! schwarze 258: mandoc_msg(MANDOCERR_BADVAL_MISS, 0, 0, "-O %s=?", toks[tok]);
1.19 schwarze 259: return -1;
260: }
1.25 anton 261: if (tok > 6 && tok < ntoks && *cp != '\0') {
1.27 ! schwarze 262: mandoc_msg(MANDOCERR_BADVAL, 0, 0, "-O %s=%s", toks[tok], cp);
1.19 schwarze 263: return -1;
264: }
1.14 schwarze 265:
266: switch (tok) {
267: case 0:
1.19 schwarze 268: if (conf->includes != NULL) {
269: oldval = mandoc_strdup(conf->includes);
270: break;
271: }
272: conf->includes = mandoc_strdup(cp);
273: return 0;
1.14 schwarze 274: case 1:
1.19 schwarze 275: if (conf->man != NULL) {
276: oldval = mandoc_strdup(conf->man);
277: break;
278: }
279: conf->man = mandoc_strdup(cp);
280: return 0;
1.14 schwarze 281: case 2:
1.19 schwarze 282: if (conf->paper != NULL) {
283: oldval = mandoc_strdup(conf->paper);
284: break;
285: }
286: conf->paper = mandoc_strdup(cp);
287: return 0;
1.14 schwarze 288: case 3:
1.19 schwarze 289: if (conf->style != NULL) {
290: oldval = mandoc_strdup(conf->style);
291: break;
292: }
293: conf->style = mandoc_strdup(cp);
294: return 0;
1.14 schwarze 295: case 4:
1.19 schwarze 296: if (conf->indent) {
297: mandoc_asprintf(&oldval, "%zu", conf->indent);
298: break;
299: }
300: conf->indent = strtonum(cp, 0, 1000, &errstr);
301: if (errstr == NULL)
302: return 0;
1.27 ! schwarze 303: mandoc_msg(MANDOCERR_BADVAL_BAD, 0, 0,
! 304: "-O indent=%s is %s", cp, errstr);
1.19 schwarze 305: return -1;
1.14 schwarze 306: case 5:
1.19 schwarze 307: if (conf->width) {
308: mandoc_asprintf(&oldval, "%zu", conf->width);
309: break;
310: }
1.21 schwarze 311: conf->width = strtonum(cp, 1, 1000, &errstr);
1.19 schwarze 312: if (errstr == NULL)
313: return 0;
1.27 ! schwarze 314: mandoc_msg(MANDOCERR_BADVAL_BAD, 0, 0,
! 315: "-O width=%s is %s", cp, errstr);
1.19 schwarze 316: return -1;
1.14 schwarze 317: case 6:
1.24 schwarze 318: if (conf->tag != NULL) {
319: oldval = mandoc_strdup(conf->tag);
320: break;
321: }
322: conf->tag = mandoc_strdup(cp);
323: return 0;
324: case 7:
1.14 schwarze 325: conf->fragment = 1;
1.19 schwarze 326: return 0;
1.24 schwarze 327: case 8:
1.14 schwarze 328: conf->mdoc = 1;
1.20 schwarze 329: return 0;
1.24 schwarze 330: case 9:
1.20 schwarze 331: conf->noval = 1;
1.23 schwarze 332: return 0;
1.24 schwarze 333: case 10:
1.23 schwarze 334: conf->toc = 1;
1.19 schwarze 335: return 0;
1.14 schwarze 336: default:
1.27 ! schwarze 337: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-O %s", cp);
! 338: return -1;
! 339: }
! 340: if (fromfile) {
! 341: free(oldval);
! 342: return 0;
! 343: } else {
! 344: mandoc_msg(MANDOCERR_BADVAL_DUPE, 0, 0,
! 345: "-O %s=%s: already set to %s", toks[tok], cp, oldval);
! 346: free(oldval);
1.19 schwarze 347: return -1;
1.14 schwarze 348: }
1.1 schwarze 349: }
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