Annotation of src/usr.bin/mandoc/manpath.c, Revision 1.11
1.11 ! schwarze 1: /* $OpenBSD$ */
1.1 schwarze 2: /*
1.11 ! schwarze 3: * Copyright (c) 2011, 2014 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: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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 <assert.h>
22: #include <ctype.h>
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"
1.1 schwarze 29: #include "manpath.h"
30:
31: #define MAN_CONF_FILE "/etc/man.conf"
32: #define MAN_CONF_KEY "_whatdb"
33:
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:
37: void
1.2 schwarze 38: manpath_parse(struct manpaths *dirs, const char *file,
39: char *defp, char *auxp)
1.1 schwarze 40: {
1.4 schwarze 41: char *insert;
1.1 schwarze 42:
1.4 schwarze 43: /* Always prepend -m. */
1.11 ! schwarze 44: manpath_parseline(dirs, auxp, 1);
1.1 schwarze 45:
1.4 schwarze 46: /* If -M is given, it overrides everything else. */
47: if (NULL != defp) {
1.11 ! schwarze 48: manpath_parseline(dirs, defp, 1);
1.4 schwarze 49: return;
50: }
51:
52: /* MANPATH and man.conf(5) cooperate. */
53: defp = getenv("MANPATH");
54: if (NULL == file)
55: file = MAN_CONF_FILE;
56:
57: /* No MANPATH; use man.conf(5) only. */
58: if (NULL == defp || '\0' == defp[0]) {
59: manpath_manconf(dirs, file);
60: return;
61: }
62:
63: /* Prepend man.conf(5) to MANPATH. */
64: if (':' == defp[0]) {
65: manpath_manconf(dirs, file);
1.11 ! schwarze 66: manpath_parseline(dirs, defp, 0);
1.4 schwarze 67: return;
68: }
1.1 schwarze 69:
1.4 schwarze 70: /* Append man.conf(5) to MANPATH. */
1.6 schwarze 71: if (':' == defp[strlen(defp) - 1]) {
1.11 ! schwarze 72: manpath_parseline(dirs, defp, 0);
1.4 schwarze 73: manpath_manconf(dirs, file);
74: return;
75: }
76:
77: /* Insert man.conf(5) into MANPATH. */
78: insert = strstr(defp, "::");
79: if (NULL != insert) {
80: *insert++ = '\0';
1.11 ! schwarze 81: manpath_parseline(dirs, defp, 0);
1.4 schwarze 82: manpath_manconf(dirs, file);
1.11 ! schwarze 83: manpath_parseline(dirs, insert + 1, 0);
1.4 schwarze 84: return;
85: }
86:
87: /* MANPATH overrides man.conf(5) completely. */
1.11 ! schwarze 88: manpath_parseline(dirs, defp, 0);
1.1 schwarze 89: }
90:
91: /*
92: * Parse a FULL pathname from a colon-separated list of arrays.
93: */
1.3 schwarze 94: static void
1.11 ! schwarze 95: manpath_parseline(struct manpaths *dirs, char *path, int complain)
1.1 schwarze 96: {
97: char *dir;
98:
99: if (NULL == path)
100: return;
101:
102: for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":"))
1.11 ! schwarze 103: manpath_add(dirs, dir, complain);
1.1 schwarze 104: }
105:
106: /*
107: * Add a directory to the array, ignoring bad directories.
108: * Grow the array one-by-one for simplicity's sake.
109: */
110: static void
1.11 ! schwarze 111: manpath_add(struct manpaths *dirs, const char *dir, int complain)
1.1 schwarze 112: {
113: char buf[PATH_MAX];
1.11 ! schwarze 114: struct stat sb;
1.1 schwarze 115: char *cp;
1.6 schwarze 116: size_t i;
1.1 schwarze 117:
1.11 ! schwarze 118: if (NULL == (cp = realpath(dir, buf))) {
! 119: if (complain) {
! 120: fputs("manpath: ", stderr);
! 121: perror(dir);
! 122: }
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) {
! 131: if (complain) {
! 132: fputs("manpath: ", stderr);
! 133: perror(dir);
! 134: }
! 135: return;
! 136: }
! 137:
1.10 schwarze 138: dirs->paths = mandoc_reallocarray(dirs->paths,
139: dirs->sz + 1, sizeof(char *));
1.1 schwarze 140:
141: dirs->paths[dirs->sz++] = mandoc_strdup(cp);
142: }
143:
144: void
145: manpath_free(struct manpaths *p)
146: {
1.6 schwarze 147: size_t i;
1.1 schwarze 148:
149: for (i = 0; i < p->sz; i++)
150: free(p->paths[i]);
151:
152: free(p->paths);
153: }
154:
155: void
1.2 schwarze 156: manpath_manconf(struct manpaths *dirs, const char *file)
1.1 schwarze 157: {
158: FILE *stream;
159: char *p, *q;
160: size_t len, keysz;
161:
162: keysz = strlen(MAN_CONF_KEY);
163: assert(keysz > 0);
164:
165: if (NULL == (stream = fopen(file, "r")))
166: return;
167:
168: while (NULL != (p = fgetln(stream, &len))) {
169: if (0 == len || '\n' != p[--len])
170: break;
171: p[len] = '\0';
172: while (isspace((unsigned char)*p))
173: p++;
174: if (strncmp(MAN_CONF_KEY, p, keysz))
175: continue;
176: p += keysz;
1.7 schwarze 177: while (isspace((unsigned char)*p))
1.1 schwarze 178: p++;
179: if ('\0' == *p)
180: continue;
181: if (NULL == (q = strrchr(p, '/')))
182: continue;
183: *q = '\0';
1.11 ! schwarze 184: manpath_add(dirs, p, 0);
1.1 schwarze 185: }
186:
187: fclose(stream);
188: }
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