diff options
Diffstat (limited to 'usr.bin/mandoc/manpath.c')
| -rw-r--r-- | usr.bin/mandoc/manpath.c | 342 |
1 files changed, 342 insertions, 0 deletions
diff --git a/usr.bin/mandoc/manpath.c b/usr.bin/mandoc/manpath.c new file mode 100644 index 0000000..dcd12a0 --- /dev/null +++ b/usr.bin/mandoc/manpath.c @@ -0,0 +1,342 @@ +/* $OpenBSD: manpath.c,v 1.28 2020/02/10 14:42:03 schwarze Exp $ */ +/* + * Copyright (c) 2011,2014,2015,2017-2019 Ingo Schwarze <schwarze@openbsd.org> + * Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv> + * + * 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 <sys/types.h> +#include <sys/stat.h> + +#include <ctype.h> +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "mandoc_aux.h" +#include "mandoc.h" +#include "manconf.h" + +#define MAN_CONF_FILE "/etc/man.conf" +#define MANPATH_BASE "/usr/share/man:/usr/X11R6/man" +#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 *, char); +static void manpath_parseline(struct manpaths *, char *, char); + + +void +manconf_parse(struct manconf *conf, const char *file, + char *defp, char *auxp) +{ + char *insert; + + /* Always prepend -m. */ + manpath_parseline(&conf->manpath, auxp, 'm'); + + /* If -M is given, it overrides everything else. */ + if (NULL != defp) { + manpath_parseline(&conf->manpath, defp, 'M'); + 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'); +} + +void +manpath_base(struct manpaths *dirs) +{ + char path_base[] = MANPATH_BASE; + manpath_parseline(dirs, path_base, '\0'); +} + +/* + * Parse a FULL pathname from a colon-separated list of arrays. + */ +static void +manpath_parseline(struct manpaths *dirs, char *path, char option) +{ + char *dir; + + if (NULL == path) + return; + + for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":")) + manpath_add(dirs, dir, option); +} + +/* + * 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, char option) +{ + char buf[PATH_MAX]; + struct stat sb; + char *cp; + size_t i; + + if ((cp = realpath(dir, buf)) == NULL) + goto fail; + + for (i = 0; i < dirs->sz; i++) + if (strcmp(dirs->paths[i], dir) == 0) + return; + + if (stat(cp, &sb) == -1) + goto fail; + + dirs->paths = mandoc_reallocarray(dirs->paths, + dirs->sz + 1, sizeof(*dirs->paths)); + dirs->paths[dirs->sz++] = mandoc_strdup(cp); + return; + +fail: + if (option != '\0') + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, + "-%c %s: %s", option, dir, strerror(errno)); +} + +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" }; + 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 0: /* manpath */ + manpath_add(&conf->manpath, cp, '\0'); + *manpath_default = '\0'; + break; + case 1: /* output */ + manconf_output(&conf->output, cp, 1); + break; + default: + break; + } + } + free(line); + fclose(stream); + +out: + if (*manpath_default != '\0') + manpath_parseline(&conf->manpath, manpath_default, '\0'); +} + +int +manconf_output(struct manoutput *conf, const char *cp, int fromfile) +{ + const char *const toks[] = { + "includes", "man", "paper", "style", "indent", "width", + "tag", "fragment", "mdoc", "noval", "toc" + }; + const size_t ntoks = sizeof(toks) / sizeof(toks[0]); + + const char *errstr; + char *oldval; + size_t len, tok; + + for (tok = 0; tok < ntoks; tok++) { + len = strlen(toks[tok]); + if (strncmp(cp, toks[tok], len) == 0 && + strchr(" = ", cp[len]) != NULL) { + cp += len; + if (*cp == '=') + cp++; + while (isspace((unsigned char)*cp)) + cp++; + break; + } + } + + if (tok < 6 && *cp == '\0') { + mandoc_msg(MANDOCERR_BADVAL_MISS, 0, 0, "-O %s=?", toks[tok]); + return -1; + } + if (tok > 6 && tok < ntoks && *cp != '\0') { + mandoc_msg(MANDOCERR_BADVAL, 0, 0, "-O %s=%s", toks[tok], cp); + return -1; + } + + switch (tok) { + case 0: + if (conf->includes != NULL) { + oldval = mandoc_strdup(conf->includes); + break; + } + conf->includes = mandoc_strdup(cp); + return 0; + case 1: + if (conf->man != NULL) { + oldval = mandoc_strdup(conf->man); + break; + } + conf->man = mandoc_strdup(cp); + return 0; + case 2: + if (conf->paper != NULL) { + oldval = mandoc_strdup(conf->paper); + break; + } + conf->paper = mandoc_strdup(cp); + return 0; + case 3: + if (conf->style != NULL) { + oldval = mandoc_strdup(conf->style); + break; + } + conf->style = mandoc_strdup(cp); + return 0; + case 4: + if (conf->indent) { + mandoc_asprintf(&oldval, "%zu", conf->indent); + break; + } + conf->indent = strtonum(cp, 0, 1000, &errstr); + if (errstr == NULL) + return 0; + mandoc_msg(MANDOCERR_BADVAL_BAD, 0, 0, + "-O indent=%s is %s", cp, errstr); + return -1; + case 5: + if (conf->width) { + mandoc_asprintf(&oldval, "%zu", conf->width); + break; + } + conf->width = strtonum(cp, 1, 1000, &errstr); + if (errstr == NULL) + return 0; + mandoc_msg(MANDOCERR_BADVAL_BAD, 0, 0, + "-O width=%s is %s", cp, errstr); + return -1; + case 6: + if (conf->tag != NULL) { + oldval = mandoc_strdup(conf->tag); + break; + } + conf->tag = mandoc_strdup(cp); + return 0; + case 7: + conf->fragment = 1; + return 0; + case 8: + conf->mdoc = 1; + return 0; + case 9: + conf->noval = 1; + return 0; + case 10: + conf->toc = 1; + return 0; + default: + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-O %s", cp); + return -1; + } + if (fromfile) { + free(oldval); + return 0; + } else { + mandoc_msg(MANDOCERR_BADVAL_DUPE, 0, 0, + "-O %s=%s: already set to %s", toks[tok], cp, oldval); + free(oldval); + return -1; + } +} |