/* $OpenBSD: manpath.c,v 1.18 2016/05/23 18:59:00 millert Exp $ */ /* * Copyright (c) 2011, 2014, 2015 Ingo Schwarze * Copyright (c) 2011 Kristaps Dzonsons * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include "mandoc_aux.h" #include "manconf.h" #define MAN_CONF_FILE "/etc/man.conf" #define MANPATH_DEFAULT "/usr/share/man:/usr/X11R6/man:/usr/local/man" static void manconf_file(struct manconf *, const char *); static void manpath_add(struct manpaths *, const char *, int); static void manpath_parseline(struct manpaths *, char *, int); void manconf_parse(struct manconf *conf, const char *file, char *defp, char *auxp) { char *insert; /* Always prepend -m. */ manpath_parseline(&conf->manpath, auxp, 1); /* If -M is given, it overrides everything else. */ if (NULL != defp) { manpath_parseline(&conf->manpath, defp, 1); return; } /* MANPATH and man.conf(5) cooperate. */ defp = getenv("MANPATH"); if (NULL == file) file = MAN_CONF_FILE; /* No MANPATH; use man.conf(5) only. */ if (NULL == defp || '\0' == defp[0]) { manconf_file(conf, file); return; } /* Prepend man.conf(5) to MANPATH. */ if (':' == defp[0]) { manconf_file(conf, file); manpath_parseline(&conf->manpath, defp, 0); return; } /* Append man.conf(5) to MANPATH. */ if (':' == defp[strlen(defp) - 1]) { manpath_parseline(&conf->manpath, defp, 0); manconf_file(conf, file); return; } /* Insert man.conf(5) into MANPATH. */ insert = strstr(defp, "::"); if (NULL != insert) { *insert++ = '\0'; manpath_parseline(&conf->manpath, defp, 0); manconf_file(conf, file); manpath_parseline(&conf->manpath, insert + 1, 0); return; } /* MANPATH overrides man.conf(5) completely. */ manpath_parseline(&conf->manpath, defp, 0); } /* * Parse a FULL pathname from a colon-separated list of arrays. */ static void manpath_parseline(struct manpaths *dirs, char *path, int complain) { char *dir; if (NULL == path) return; for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":")) manpath_add(dirs, dir, complain); } /* * Add a directory to the array, ignoring bad directories. * Grow the array one-by-one for simplicity's sake. */ static void manpath_add(struct manpaths *dirs, const char *dir, int complain) { char buf[PATH_MAX]; struct stat sb; char *cp; size_t i; if (NULL == (cp = realpath(dir, buf))) { if (complain) warn("manpath: %s", dir); return; } for (i = 0; i < dirs->sz; i++) if (0 == strcmp(dirs->paths[i], dir)) return; if (stat(cp, &sb) == -1) { if (complain) warn("manpath: %s", dir); return; } dirs->paths = mandoc_reallocarray(dirs->paths, dirs->sz + 1, sizeof(char *)); dirs->paths[dirs->sz++] = mandoc_strdup(cp); } void manconf_free(struct manconf *conf) { size_t i; for (i = 0; i < conf->manpath.sz; i++) free(conf->manpath.paths[i]); free(conf->manpath.paths); free(conf->output.includes); free(conf->output.man); free(conf->output.paper); free(conf->output.style); } static void manconf_file(struct manconf *conf, const char *file) { const char *const toks[] = { "manpath", "output", "_whatdb" }; char manpath_default[] = MANPATH_DEFAULT; FILE *stream; char *line, *cp, *ep; size_t linesz, tok, toklen; ssize_t linelen; if ((stream = fopen(file, "r")) == NULL) goto out; line = NULL; linesz = 0; while ((linelen = getline(&line, &linesz, stream)) != -1) { cp = line; ep = cp + linelen - 1; while (ep > cp && isspace((unsigned char)*ep)) *ep-- = '\0'; while (isspace((unsigned char)*cp)) cp++; if (cp == ep || *cp == '#') continue; for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) { toklen = strlen(toks[tok]); if (cp + toklen < ep && isspace((unsigned char)cp[toklen]) && strncmp(cp, toks[tok], toklen) == 0) { cp += toklen; while (isspace((unsigned char)*cp)) cp++; break; } } switch (tok) { case 2: /* _whatdb */ while (ep > cp && ep[-1] != '/') ep--; if (ep == cp) continue; *ep = '\0'; /* FALLTHROUGH */ case 0: /* manpath */ manpath_add(&conf->manpath, cp, 0); *manpath_default = '\0'; break; case 1: /* output */ manconf_output(&conf->output, cp); break; default: break; } } free(line); fclose(stream); out: if (*manpath_default != '\0') manpath_parseline(&conf->manpath, manpath_default, 0); } void manconf_output(struct manoutput *conf, const char *cp) { const char *const toks[] = { "includes", "man", "paper", "style", "indent", "width", "fragment", "mdoc" }; size_t len, tok; for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) { len = strlen(toks[tok]); if ( ! strncmp(cp, toks[tok], len) && strchr(" = ", cp[len]) != NULL) { cp += len; if (*cp == '=') cp++; while (isspace((unsigned char)*cp)) cp++; break; } } if (tok < 6 && *cp == '\0') return; switch (tok) { case 0: if (conf->includes == NULL) conf->includes = mandoc_strdup(cp); break; case 1: if (conf->man == NULL) conf->man = mandoc_strdup(cp); break; case 2: if (conf->paper == NULL) conf->paper = mandoc_strdup(cp); break; case 3: if (conf->style == NULL) conf->style = mandoc_strdup(cp); break; case 4: if (conf->indent == 0) conf->indent = strtonum(cp, 0, 1000, NULL); break; case 5: if (conf->width == 0) conf->width = strtonum(cp, 58, 1000, NULL); break; case 6: conf->fragment = 1; break; case 7: conf->mdoc = 1; break; default: break; } }