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Annotation of mandoc/manpath.c, Revision 1.34

1.34    ! schwarze    1: /*     $Id: manpath.c,v 1.33 2017/02/10 15:45:28 schwarze Exp $        */
1.1       kristaps    2: /*
1.32      schwarze    3:  * Copyright (c) 2011, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1       kristaps    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:  *
1.22      schwarze   10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.1       kristaps   11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.22      schwarze   12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.1       kristaps   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:  */
                     18: #include "config.h"
1.16      schwarze   19:
                     20: #include <sys/types.h>
1.18      schwarze   21: #include <sys/stat.h>
1.1       kristaps   22:
                     23: #include <ctype.h>
1.28      schwarze   24: #if HAVE_ERR
1.27      schwarze   25: #include <err.h>
1.28      schwarze   26: #endif
1.1       kristaps   27: #include <limits.h>
                     28: #include <stdio.h>
                     29: #include <stdlib.h>
                     30: #include <string.h>
                     31:
1.13      schwarze   32: #include "mandoc_aux.h"
1.23      schwarze   33: #include "manconf.h"
1.1       kristaps   34:
1.23      schwarze   35: static void     manconf_file(struct manconf *, const char *);
1.18      schwarze   36: static void     manpath_add(struct manpaths *, const char *, int);
                     37: static void     manpath_parseline(struct manpaths *, char *, int);
1.1       kristaps   38:
1.23      schwarze   39:
1.1       kristaps   40: void
1.23      schwarze   41: manconf_parse(struct manconf *conf, const char *file,
1.5       schwarze   42:                char *defp, char *auxp)
1.1       kristaps   43: {
1.8       kristaps   44:        char            *insert;
1.4       schwarze   45:
1.8       kristaps   46:        /* Always prepend -m. */
1.23      schwarze   47:        manpath_parseline(&conf->manpath, auxp, 1);
1.10      schwarze   48:
1.8       kristaps   49:        /* If -M is given, it overrides everything else. */
                     50:        if (NULL != defp) {
1.23      schwarze   51:                manpath_parseline(&conf->manpath, defp, 1);
1.8       kristaps   52:                return;
                     53:        }
1.1       kristaps   54:
1.8       kristaps   55:        /* MANPATH and man.conf(5) cooperate. */
                     56:        defp = getenv("MANPATH");
                     57:        if (NULL == file)
                     58:                file = MAN_CONF_FILE;
                     59:
                     60:        /* No MANPATH; use man.conf(5) only. */
                     61:        if (NULL == defp || '\0' == defp[0]) {
1.23      schwarze   62:                manconf_file(conf, file);
1.8       kristaps   63:                return;
                     64:        }
                     65:
                     66:        /* Prepend man.conf(5) to MANPATH. */
                     67:        if (':' == defp[0]) {
1.23      schwarze   68:                manconf_file(conf, file);
                     69:                manpath_parseline(&conf->manpath, defp, 0);
1.8       kristaps   70:                return;
                     71:        }
                     72:
                     73:        /* Append man.conf(5) to MANPATH. */
1.9       kristaps   74:        if (':' == defp[strlen(defp) - 1]) {
1.23      schwarze   75:                manpath_parseline(&conf->manpath, defp, 0);
                     76:                manconf_file(conf, file);
1.8       kristaps   77:                return;
                     78:        }
                     79:
                     80:        /* Insert man.conf(5) into MANPATH. */
                     81:        insert = strstr(defp, "::");
                     82:        if (NULL != insert) {
                     83:                *insert++ = '\0';
1.23      schwarze   84:                manpath_parseline(&conf->manpath, defp, 0);
                     85:                manconf_file(conf, file);
                     86:                manpath_parseline(&conf->manpath, insert + 1, 0);
1.8       kristaps   87:                return;
                     88:        }
                     89:
                     90:        /* MANPATH overrides man.conf(5) completely. */
1.23      schwarze   91:        manpath_parseline(&conf->manpath, defp, 0);
1.1       kristaps   92: }
                     93:
                     94: /*
                     95:  * Parse a FULL pathname from a colon-separated list of arrays.
                     96:  */
1.6       kristaps   97: static void
1.18      schwarze   98: manpath_parseline(struct manpaths *dirs, char *path, int complain)
1.1       kristaps   99: {
                    100:        char    *dir;
                    101:
                    102:        if (NULL == path)
                    103:                return;
                    104:
                    105:        for (dir = strtok(path, ":"); dir; dir = strtok(NULL, ":"))
1.18      schwarze  106:                manpath_add(dirs, dir, complain);
1.1       kristaps  107: }
                    108:
                    109: /*
                    110:  * Add a directory to the array, ignoring bad directories.
                    111:  * Grow the array one-by-one for simplicity's sake.
                    112:  */
                    113: static void
1.18      schwarze  114: manpath_add(struct manpaths *dirs, const char *dir, int complain)
1.1       kristaps  115: {
                    116:        char             buf[PATH_MAX];
1.18      schwarze  117:        struct stat      sb;
1.1       kristaps  118:        char            *cp;
1.9       kristaps  119:        size_t           i;
1.1       kristaps  120:
1.18      schwarze  121:        if (NULL == (cp = realpath(dir, buf))) {
1.27      schwarze  122:                if (complain)
                    123:                        warn("manpath: %s", dir);
1.1       kristaps  124:                return;
1.18      schwarze  125:        }
1.1       kristaps  126:
                    127:        for (i = 0; i < dirs->sz; i++)
                    128:                if (0 == strcmp(dirs->paths[i], dir))
                    129:                        return;
                    130:
1.18      schwarze  131:        if (stat(cp, &sb) == -1) {
1.27      schwarze  132:                if (complain)
                    133:                        warn("manpath: %s", dir);
1.18      schwarze  134:                return;
                    135:        }
                    136:
1.15      schwarze  137:        dirs->paths = mandoc_reallocarray(dirs->paths,
                    138:            dirs->sz + 1, sizeof(char *));
1.1       kristaps  139:
                    140:        dirs->paths[dirs->sz++] = mandoc_strdup(cp);
1.2       kristaps  141: }
                    142:
                    143: void
1.23      schwarze  144: manconf_free(struct manconf *conf)
1.2       kristaps  145: {
1.9       kristaps  146:        size_t           i;
1.2       kristaps  147:
1.23      schwarze  148:        for (i = 0; i < conf->manpath.sz; i++)
                    149:                free(conf->manpath.paths[i]);
1.2       kristaps  150:
1.23      schwarze  151:        free(conf->manpath.paths);
                    152:        free(conf->output.includes);
                    153:        free(conf->output.man);
                    154:        free(conf->output.paper);
                    155:        free(conf->output.style);
1.2       kristaps  156: }
                    157:
1.23      schwarze  158: static void
                    159: manconf_file(struct manconf *conf, const char *file)
1.2       kristaps  160: {
1.23      schwarze  161:        const char *const toks[] = { "manpath", "output", "_whatdb" };
1.25      schwarze  162:        char manpath_default[] = MANPATH_DEFAULT;
1.22      schwarze  163:
1.2       kristaps  164:        FILE            *stream;
1.29      schwarze  165:        char            *line, *cp, *ep;
                    166:        size_t           linesz, tok, toklen;
                    167:        ssize_t          linelen;
1.1       kristaps  168:
1.22      schwarze  169:        if ((stream = fopen(file, "r")) == NULL)
1.25      schwarze  170:                goto out;
1.1       kristaps  171:
1.29      schwarze  172:        line = NULL;
                    173:        linesz = 0;
                    174:
                    175:        while ((linelen = getline(&line, &linesz, stream)) != -1) {
                    176:                cp = line;
1.30      schwarze  177:                ep = cp + linelen - 1;
                    178:                while (ep > cp && isspace((unsigned char)*ep))
                    179:                        *ep-- = '\0';
1.22      schwarze  180:                while (isspace((unsigned char)*cp))
                    181:                        cp++;
1.30      schwarze  182:                if (cp == ep || *cp == '#')
1.1       kristaps  183:                        continue;
1.22      schwarze  184:
                    185:                for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
1.29      schwarze  186:                        toklen = strlen(toks[tok]);
                    187:                        if (cp + toklen < ep &&
                    188:                            isspace((unsigned char)cp[toklen]) &&
                    189:                            strncmp(cp, toks[tok], toklen) == 0) {
                    190:                                cp += toklen;
1.22      schwarze  191:                                while (isspace((unsigned char)*cp))
                    192:                                        cp++;
                    193:                                break;
                    194:                        }
                    195:                }
                    196:
                    197:                switch (tok) {
1.23      schwarze  198:                case 2:  /* _whatdb */
1.22      schwarze  199:                        while (ep > cp && ep[-1] != '/')
                    200:                                ep--;
                    201:                        if (ep == cp)
                    202:                                continue;
                    203:                        *ep = '\0';
                    204:                        /* FALLTHROUGH */
                    205:                case 0:  /* manpath */
1.23      schwarze  206:                        manpath_add(&conf->manpath, cp, 0);
1.25      schwarze  207:                        *manpath_default = '\0';
1.23      schwarze  208:                        break;
                    209:                case 1:  /* output */
1.32      schwarze  210:                        manconf_output(&conf->output, cp, 1);
1.22      schwarze  211:                        break;
                    212:                default:
                    213:                        break;
                    214:                }
1.1       kristaps  215:        }
1.29      schwarze  216:        free(line);
1.25      schwarze  217:        fclose(stream);
1.1       kristaps  218:
1.25      schwarze  219: out:
                    220:        if (*manpath_default != '\0')
                    221:                manpath_parseline(&conf->manpath, manpath_default, 0);
1.23      schwarze  222: }
                    223:
1.32      schwarze  224: int
                    225: manconf_output(struct manoutput *conf, const char *cp, int fromfile)
1.23      schwarze  226: {
                    227:        const char *const toks[] = {
                    228:            "includes", "man", "paper", "style",
1.33      schwarze  229:            "indent", "width", "fragment", "mdoc", "noval"
1.23      schwarze  230:        };
                    231:
1.32      schwarze  232:        const char      *errstr;
                    233:        char            *oldval;
                    234:        size_t           len, tok;
1.23      schwarze  235:
                    236:        for (tok = 0; tok < sizeof(toks)/sizeof(toks[0]); tok++) {
                    237:                len = strlen(toks[tok]);
                    238:                if ( ! strncmp(cp, toks[tok], len) &&
                    239:                    strchr(" =  ", cp[len]) != NULL) {
                    240:                        cp += len;
                    241:                        if (*cp == '=')
                    242:                                cp++;
                    243:                        while (isspace((unsigned char)*cp))
                    244:                                cp++;
                    245:                        break;
                    246:                }
                    247:        }
                    248:
1.32      schwarze  249:        if (tok < 6 && *cp == '\0') {
                    250:                warnx("-O %s=?: Missing argument value", toks[tok]);
                    251:                return -1;
                    252:        }
                    253:        if ((tok == 6 || tok == 7) && *cp != '\0') {
                    254:                warnx("-O %s: Does not take a value: %s", toks[tok], cp);
                    255:                return -1;
                    256:        }
1.23      schwarze  257:
                    258:        switch (tok) {
                    259:        case 0:
1.32      schwarze  260:                if (conf->includes != NULL) {
                    261:                        oldval = mandoc_strdup(conf->includes);
                    262:                        break;
                    263:                }
                    264:                conf->includes = mandoc_strdup(cp);
                    265:                return 0;
1.23      schwarze  266:        case 1:
1.32      schwarze  267:                if (conf->man != NULL) {
                    268:                        oldval = mandoc_strdup(conf->man);
                    269:                        break;
                    270:                }
                    271:                conf->man = mandoc_strdup(cp);
                    272:                return 0;
1.23      schwarze  273:        case 2:
1.32      schwarze  274:                if (conf->paper != NULL) {
                    275:                        oldval = mandoc_strdup(conf->paper);
                    276:                        break;
                    277:                }
                    278:                conf->paper = mandoc_strdup(cp);
                    279:                return 0;
1.23      schwarze  280:        case 3:
1.32      schwarze  281:                if (conf->style != NULL) {
                    282:                        oldval = mandoc_strdup(conf->style);
                    283:                        break;
                    284:                }
                    285:                conf->style = mandoc_strdup(cp);
                    286:                return 0;
1.23      schwarze  287:        case 4:
1.32      schwarze  288:                if (conf->indent) {
                    289:                        mandoc_asprintf(&oldval, "%zu", conf->indent);
                    290:                        break;
                    291:                }
                    292:                conf->indent = strtonum(cp, 0, 1000, &errstr);
                    293:                if (errstr == NULL)
                    294:                        return 0;
                    295:                warnx("-O indent=%s is %s", cp, errstr);
                    296:                return -1;
1.23      schwarze  297:        case 5:
1.32      schwarze  298:                if (conf->width) {
                    299:                        mandoc_asprintf(&oldval, "%zu", conf->width);
                    300:                        break;
                    301:                }
1.34    ! schwarze  302:                conf->width = strtonum(cp, 1, 1000, &errstr);
1.32      schwarze  303:                if (errstr == NULL)
                    304:                        return 0;
                    305:                warnx("-O width=%s is %s", cp, errstr);
                    306:                return -1;
1.23      schwarze  307:        case 6:
                    308:                conf->fragment = 1;
1.32      schwarze  309:                return 0;
1.23      schwarze  310:        case 7:
                    311:                conf->mdoc = 1;
1.33      schwarze  312:                return 0;
                    313:        case 8:
                    314:                conf->noval = 1;
1.32      schwarze  315:                return 0;
1.23      schwarze  316:        default:
1.32      schwarze  317:                if (fromfile)
                    318:                        warnx("-O %s: Bad argument", cp);
                    319:                return -1;
1.23      schwarze  320:        }
1.32      schwarze  321:        if (fromfile == 0)
                    322:                warnx("-O %s=%s: Option already set to %s",
                    323:                    toks[tok], cp, oldval);
                    324:        free(oldval);
                    325:        return -1;
1.1       kristaps  326: }

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