/* $OpenBSD: main.c,v 1.260 2021/09/04 22:37:26 schwarze Exp $ */ /* * Copyright (c) 2010-2012, 2014-2021 Ingo Schwarze * Copyright (c) 2008-2012 Kristaps Dzonsons * Copyright (c) 2010 Joerg Sonnenberger * * 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. * * Main program for mandoc(1), man(1), apropos(1), whatis(1), and help(1). */ #include #include #include /* MACHINE */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mandoc_aux.h" #include "mandoc.h" #include "mandoc_xr.h" #include "roff.h" #include "mdoc.h" #include "man.h" #include "mandoc_parse.h" #include "tag.h" #include "term_tag.h" #include "main.h" #include "manconf.h" #include "mansearch.h" #define BINM_APROPOS "apropos" #define BINM_MAN "man" #define BINM_MAKEWHATIS "makewhatis" #define BINM_WHATIS "whatis" #define OSENUM MANDOC_OS_OPENBSD enum outmode { OUTMODE_DEF = 0, OUTMODE_FLN, OUTMODE_LST, OUTMODE_ALL, OUTMODE_ONE }; enum outt { OUTT_ASCII = 0, /* -Tascii */ OUTT_LOCALE, /* -Tlocale */ OUTT_UTF8, /* -Tutf8 */ OUTT_TREE, /* -Ttree */ OUTT_MAN, /* -Tman */ OUTT_HTML, /* -Thtml */ OUTT_MARKDOWN, /* -Tmarkdown */ OUTT_LINT, /* -Tlint */ OUTT_PS, /* -Tps */ OUTT_PDF /* -Tpdf */ }; struct outstate { struct tag_files *tag_files; /* Tagging state variables. */ void *outdata; /* data for output */ int use_pager; int wstop; /* stop after a file with a warning */ int had_output; /* Some output was generated. */ enum outt outtype; /* which output to use */ }; int mandocdb(int, char *[]); static void check_xr(struct manpaths *); static void fs_append(char **, size_t, int, size_t, const char *, enum form, struct manpage **, size_t *); static int fs_lookup(const struct manpaths *, size_t, const char *, const char *, const char *, struct manpage **, size_t *); static int fs_search(const struct mansearch *, const struct manpaths *, const char *, struct manpage **, size_t *); static void glob_esc(char **, const char *, const char *); static void outdata_alloc(struct outstate *, struct manoutput *); static void parse(struct mparse *, int, const char *, struct outstate *, struct manconf *); static void passthrough(int, int); static void process_onefile(struct mparse *, struct manpage *, int, struct outstate *, struct manconf *); static void run_pager(struct outstate *, char *); static pid_t spawn_pager(struct outstate *, char *); static void usage(enum argmode) __attribute__((__noreturn__)); static int woptions(char *, enum mandoc_os *, int *); static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9}; static char help_arg[] = "help"; static char *help_argv[] = {help_arg, NULL}; int main(int argc, char *argv[]) { struct manconf conf; /* Manpaths and output options. */ struct outstate outst; /* Output state. */ struct winsize ws; /* Result of ioctl(TIOCGWINSZ). */ struct mansearch search; /* Search options. */ struct manpage *res; /* Complete list of search results. */ struct manpage *resn; /* Search results for one name. */ struct mparse *mp; /* Opaque parser object. */ const char *conf_file; /* -C: alternate config file. */ const char *os_s; /* -I: Operating system for display. */ const char *progname, *sec, *ep; char *defpaths; /* -M: override manpaths. */ char *auxpaths; /* -m: additional manpaths. */ char *oarg; /* -O: output option string. */ char *tagarg; /* -O tag: default value. */ unsigned char *uc; size_t ressz; /* Number of elements in res[]. */ size_t resnsz; /* Number of elements in resn[]. */ size_t i, ib, ssz; int options; /* Parser options. */ int show_usage; /* Invalid argument: give up. */ int prio, best_prio; int startdir; int c; enum mandoc_os os_e; /* Check base system conventions. */ enum outmode outmode; /* According to command line. */ progname = getprogname(); mandoc_msg_setoutfile(stderr); if (strncmp(progname, "mandocdb", 8) == 0 || strcmp(progname, BINM_MAKEWHATIS) == 0) return mandocdb(argc, argv); if (pledge("stdio rpath wpath cpath tmppath tty proc exec", NULL) == -1) { mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno)); return mandoc_msg_getrc(); } /* Search options. */ memset(&conf, 0, sizeof(conf)); conf_file = NULL; defpaths = auxpaths = NULL; memset(&search, 0, sizeof(struct mansearch)); search.outkey = "Nd"; oarg = NULL; if (strcmp(progname, BINM_MAN) == 0) search.argmode = ARG_NAME; else if (strcmp(progname, BINM_APROPOS) == 0) search.argmode = ARG_EXPR; else if (strcmp(progname, BINM_WHATIS) == 0) search.argmode = ARG_WORD; else if (strncmp(progname, "help", 4) == 0) search.argmode = ARG_NAME; else search.argmode = ARG_FILE; /* Parser options. */ options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1; os_e = MANDOC_OS_OTHER; os_s = NULL; /* Formatter options. */ memset(&outst, 0, sizeof(outst)); outst.tag_files = NULL; outst.outtype = OUTT_LOCALE; outst.use_pager = 1; show_usage = 0; outmode = OUTMODE_DEF; while ((c = getopt(argc, argv, "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) { if (c == 'i' && search.argmode == ARG_EXPR) { optind--; break; } switch (c) { case 'a': outmode = OUTMODE_ALL; break; case 'C': conf_file = optarg; break; case 'c': outst.use_pager = 0; break; case 'f': search.argmode = ARG_WORD; break; case 'h': conf.output.synopsisonly = 1; outst.use_pager = 0; outmode = OUTMODE_ALL; break; case 'I': if (strncmp(optarg, "os=", 3) != 0) { mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-I %s", optarg); return mandoc_msg_getrc(); } if (os_s != NULL) { mandoc_msg(MANDOCERR_BADARG_DUPE, 0, 0, "-I %s", optarg); return mandoc_msg_getrc(); } os_s = optarg + 3; break; case 'K': options &= ~(MPARSE_UTF8 | MPARSE_LATIN1); if (strcmp(optarg, "utf-8") == 0) options |= MPARSE_UTF8; else if (strcmp(optarg, "iso-8859-1") == 0) options |= MPARSE_LATIN1; else if (strcmp(optarg, "us-ascii") != 0) { mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-K %s", optarg); return mandoc_msg_getrc(); } break; case 'k': search.argmode = ARG_EXPR; break; case 'l': search.argmode = ARG_FILE; outmode = OUTMODE_ALL; break; case 'M': defpaths = optarg; break; case 'm': auxpaths = optarg; break; case 'O': oarg = optarg; break; case 'S': search.arch = optarg; break; case 's': search.sec = optarg; break; case 'T': if (strcmp(optarg, "ascii") == 0) outst.outtype = OUTT_ASCII; else if (strcmp(optarg, "lint") == 0) { outst.outtype = OUTT_LINT; mandoc_msg_setoutfile(stdout); mandoc_msg_setmin(MANDOCERR_BASE); } else if (strcmp(optarg, "tree") == 0) outst.outtype = OUTT_TREE; else if (strcmp(optarg, "man") == 0) outst.outtype = OUTT_MAN; else if (strcmp(optarg, "html") == 0) outst.outtype = OUTT_HTML; else if (strcmp(optarg, "markdown") == 0) outst.outtype = OUTT_MARKDOWN; else if (strcmp(optarg, "utf8") == 0) outst.outtype = OUTT_UTF8; else if (strcmp(optarg, "locale") == 0) outst.outtype = OUTT_LOCALE; else if (strcmp(optarg, "ps") == 0) outst.outtype = OUTT_PS; else if (strcmp(optarg, "pdf") == 0) outst.outtype = OUTT_PDF; else { mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-T %s", optarg); return mandoc_msg_getrc(); } break; case 'W': if (woptions(optarg, &os_e, &outst.wstop) == -1) return mandoc_msg_getrc(); break; case 'w': outmode = OUTMODE_FLN; break; default: show_usage = 1; break; } } if (show_usage) usage(search.argmode); /* Postprocess options. */ switch (outmode) { case OUTMODE_DEF: switch (search.argmode) { case ARG_FILE: outmode = OUTMODE_ALL; outst.use_pager = 0; break; case ARG_NAME: outmode = OUTMODE_ONE; break; default: outmode = OUTMODE_LST; break; } break; case OUTMODE_FLN: if (search.argmode == ARG_FILE) outmode = OUTMODE_ALL; break; case OUTMODE_ALL: break; case OUTMODE_LST: case OUTMODE_ONE: abort(); } if (oarg != NULL) { if (outmode == OUTMODE_LST) search.outkey = oarg; else { while (oarg != NULL) { if (manconf_output(&conf.output, strsep(&oarg, ","), 0) == -1) return mandoc_msg_getrc(); } } } if (outst.outtype != OUTT_TREE || conf.output.noval == 0) options |= MPARSE_VALIDATE; if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST || (conf.output.outfilename == NULL && conf.output.tagfilename == NULL && isatty(STDOUT_FILENO) == 0)) outst.use_pager = 0; if (outst.use_pager && (conf.output.width == 0 || conf.output.indent == 0) && ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 && ws.ws_col > 1) { if (conf.output.width == 0 && ws.ws_col < 79) conf.output.width = ws.ws_col - 1; if (conf.output.indent == 0 && ws.ws_col < 66) conf.output.indent = 3; } if (outst.use_pager == 0) c = pledge("stdio rpath", NULL); else if (conf.output.outfilename != NULL || conf.output.tagfilename != NULL) c = pledge("stdio rpath wpath cpath", NULL); else c = pledge("stdio rpath tmppath tty proc exec", NULL); if (c == -1) { mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno)); return mandoc_msg_getrc(); } /* Parse arguments. */ if (argc > 0) { argc -= optind; argv += optind; } /* * Quirks for help(1) and man(1), * in particular for a section argument without -s. */ if (search.argmode == ARG_NAME) { if (*progname == 'h') { if (argc == 0) { argv = help_argv; argc = 1; } } else if (argc > 1 && ((uc = (unsigned char *)argv[0]) != NULL) && ((isdigit(uc[0]) && (uc[1] == '\0' || isalpha(uc[1]))) || (uc[0] == 'n' && uc[1] == '\0'))) { search.sec = (char *)uc; argv++; argc--; } if (search.arch == NULL) search.arch = getenv("MACHINE"); if (search.arch == NULL) search.arch = MACHINE; if (outmode == OUTMODE_ONE) search.firstmatch = 1; } /* * Use the first argument for -O tag in addition to * using it as a search term for man(1) or apropos(1). */ if (conf.output.tag != NULL && *conf.output.tag == '\0') { tagarg = argc > 0 && search.argmode == ARG_EXPR ? strchr(*argv, '=') : NULL; conf.output.tag = tagarg == NULL ? *argv : tagarg + 1; } /* Read the configuration file. */ if (search.argmode != ARG_FILE || mandoc_msg_getmin() == MANDOCERR_STYLE) manconf_parse(&conf, conf_file, defpaths, auxpaths); /* man(1): Resolve each name individually. */ if (search.argmode == ARG_NAME) { if (argc < 1) { if (outmode != OUTMODE_FLN) usage(ARG_NAME); if (conf.manpath.sz == 0) { warnx("The manpath is empty."); mandoc_msg_setrc(MANDOCLEVEL_BADARG); } else { for (i = 0; i + 1 < conf.manpath.sz; i++) printf("%s:", conf.manpath.paths[i]); printf("%s\n", conf.manpath.paths[i]); } manconf_free(&conf); return (int)mandoc_msg_getrc(); } for (res = NULL, ressz = 0; argc > 0; argc--, argv++) { (void)mansearch(&search, &conf.manpath, 1, argv, &resn, &resnsz); if (resnsz == 0) (void)fs_search(&search, &conf.manpath, *argv, &resn, &resnsz); if (resnsz == 0 && strchr(*argv, '/') == NULL) { if (search.arch != NULL && arch_valid(search.arch, OSENUM) == 0) warnx("Unknown architecture \"%s\".", search.arch); else if (search.sec != NULL) warnx("No entry for %s in " "section %s of the manual.", *argv, search.sec); else warnx("No entry for %s in " "the manual.", *argv); mandoc_msg_setrc(MANDOCLEVEL_BADARG); continue; } if (resnsz == 0) { if (access(*argv, R_OK) == -1) { mandoc_msg_setinfilename(*argv); mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "%s", strerror(errno)); mandoc_msg_setinfilename(NULL); continue; } resnsz = 1; resn = mandoc_calloc(resnsz, sizeof(*res)); resn->file = mandoc_strdup(*argv); resn->ipath = SIZE_MAX; resn->form = FORM_SRC; } if (outmode != OUTMODE_ONE || resnsz == 1) { res = mandoc_reallocarray(res, ressz + resnsz, sizeof(*res)); memcpy(res + ressz, resn, sizeof(*resn) * resnsz); ressz += resnsz; continue; } /* Search for the best section. */ best_prio = 40; for (ib = i = 0; i < resnsz; i++) { sec = resn[i].file; sec += strcspn(sec, "123456789"); if (sec[0] == '\0') continue; /* No section at all. */ prio = sec_prios[sec[0] - '1']; if (search.sec != NULL) { ssz = strlen(search.sec); if (strncmp(sec, search.sec, ssz) == 0) sec += ssz; } else sec++; /* Prefer without suffix. */ if (*sec != '/') prio += 10; /* Wrong dir name. */ if (search.sec != NULL) { ep = strchr(sec, '\0'); if (ep - sec > 3 && strncmp(ep - 3, ".gz", 3) == 0) ep -= 3; if ((size_t)(ep - sec) < ssz + 3 || strncmp(ep - ssz, search.sec, ssz) != 0) /* Wrong file */ prio += 20; /* extension. */ } if (prio >= best_prio) continue; best_prio = prio; ib = i; } res = mandoc_reallocarray(res, ressz + 1, sizeof(*res)); memcpy(res + ressz++, resn + ib, sizeof(*resn)); } /* apropos(1), whatis(1): Process the full search expression. */ } else if (search.argmode != ARG_FILE) { if (mansearch(&search, &conf.manpath, argc, argv, &res, &ressz) == 0) usage(search.argmode); if (ressz == 0) { warnx("nothing appropriate"); mandoc_msg_setrc(MANDOCLEVEL_BADARG); goto out; } /* mandoc(1): Take command line arguments as file names. */ } else { ressz = argc > 0 ? argc : 1; res = mandoc_calloc(ressz, sizeof(*res)); for (i = 0; i < ressz; i++) { if (argc > 0) res[i].file = mandoc_strdup(argv[i]); res[i].ipath = SIZE_MAX; res[i].form = FORM_SRC; } } switch (outmode) { case OUTMODE_FLN: for (i = 0; i < ressz; i++) puts(res[i].file); goto out; case OUTMODE_LST: for (i = 0; i < ressz; i++) printf("%s - %s\n", res[i].names, res[i].output == NULL ? "" : res[i].output); goto out; default: break; } if (search.argmode == ARG_FILE && auxpaths != NULL) { if (strcmp(auxpaths, "doc") == 0) options |= MPARSE_MDOC; else if (strcmp(auxpaths, "an") == 0) options |= MPARSE_MAN; } mchars_alloc(); mp = mparse_alloc(options, os_e, os_s); /* * Remember the original working directory, if possible. * This will be needed if some names on the command line * are page names and some are relative file names. * Do not error out if the current directory is not * readable: Maybe it won't be needed after all. */ startdir = open(".", O_RDONLY | O_DIRECTORY); for (i = 0; i < ressz; i++) { process_onefile(mp, res + i, startdir, &outst, &conf); if (outst.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK) break; } if (startdir != -1) { (void)fchdir(startdir); close(startdir); } if (conf.output.tag != NULL && conf.output.tag_found == 0) { mandoc_msg(MANDOCERR_TAG, 0, 0, "%s", conf.output.tag); conf.output.tag = NULL; } if (outst.outdata != NULL) { switch (outst.outtype) { case OUTT_HTML: html_free(outst.outdata); break; case OUTT_UTF8: case OUTT_LOCALE: case OUTT_ASCII: ascii_free(outst.outdata); break; case OUTT_PDF: case OUTT_PS: pspdf_free(outst.outdata); break; default: break; } } mandoc_xr_free(); mparse_free(mp); mchars_free(); out: mansearch_free(res, ressz); if (search.argmode != ARG_FILE) manconf_free(&conf); if (outst.tag_files != NULL) { if (term_tag_close() != -1 && conf.output.outfilename == NULL && conf.output.tagfilename == NULL) run_pager(&outst, conf.output.tag); term_tag_unlink(); } else if (outst.had_output && outst.outtype != OUTT_LINT) mandoc_msg_summary(); return (int)mandoc_msg_getrc(); } static void usage(enum argmode argmode) { switch (argmode) { case ARG_FILE: fputs("usage: mandoc [-ac] [-I os=name] " "[-K encoding] [-mdoc | -man] [-O options]\n" "\t [-T output] [-W level] [file ...]\n", stderr); break; case ARG_NAME: fputs("usage: man [-acfhklw] [-C file] [-M path] " "[-m path] [-S subsection]\n" "\t [[-s] section] name ...\n", stderr); break; case ARG_WORD: fputs("usage: whatis [-afk] [-C file] " "[-M path] [-m path] [-O outkey] [-S arch]\n" "\t [-s section] name ...\n", stderr); break; case ARG_EXPR: fputs("usage: apropos [-afk] [-C file] " "[-M path] [-m path] [-O outkey] [-S arch]\n" "\t [-s section] expression ...\n", stderr); break; } exit((int)MANDOCLEVEL_BADARG); } static void glob_esc(char **dst, const char *src, const char *suffix) { while (*src != '\0') { if (strchr("*?[", *src) != NULL) *(*dst)++ = '\\'; *(*dst)++ = *src++; } while (*suffix != '\0') *(*dst)++ = *suffix++; } static void fs_append(char **file, size_t filesz, int copy, size_t ipath, const char *sec, enum form form, struct manpage **res, size_t *ressz) { struct manpage *page; *res = mandoc_reallocarray(*res, *ressz + filesz, sizeof(**res)); page = *res + *ressz; *ressz += filesz; for (;;) { page->file = copy ? mandoc_strdup(*file) : *file; page->names = NULL; page->output = NULL; page->bits = NAME_FILE & NAME_MASK; page->ipath = ipath; page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10; page->form = form; if (--filesz == 0) break; file++; page++; } } static int fs_lookup(const struct manpaths *paths, size_t ipath, const char *sec, const char *arch, const char *name, struct manpage **res, size_t *ressz) { struct stat sb; glob_t globinfo; char *file, *cp, secnum[2]; int globres; enum form form; const char *const slman = "/man"; const char *const slash = "/"; const char *const sglob = ".[01-9]*"; const char *const dot = "."; const char *const aster = "*"; memset(&globinfo, 0, sizeof(globinfo)); form = FORM_SRC; mandoc_asprintf(&file, "%s/man%s/%s.%s", paths->paths[ipath], sec, name, sec); if (stat(file, &sb) != -1) goto found; free(file); mandoc_asprintf(&file, "%s/cat%s/%s.0", paths->paths[ipath], sec, name); if (stat(file, &sb) != -1) { form = FORM_CAT; goto found; } free(file); if (arch != NULL) { mandoc_asprintf(&file, "%s/man%s/%s/%s.%s", paths->paths[ipath], sec, arch, name, sec); if (stat(file, &sb) != -1) goto found; free(file); } cp = file = mandoc_malloc(strlen(paths->paths[ipath]) * 2 + strlen(slman) + strlen(sec) * 2 + strlen(slash) + strlen(name) * 2 + strlen(sglob) + 1); glob_esc(&cp, paths->paths[ipath], slman); glob_esc(&cp, sec, slash); glob_esc(&cp, name, sglob); *cp = '\0'; globres = glob(file, 0, NULL, &globinfo); if (globres != 0 && globres != GLOB_NOMATCH) mandoc_msg(MANDOCERR_GLOB, 0, 0, "%s: %s", file, strerror(errno)); free(file); file = NULL; if (globres == 0) goto found; globfree(&globinfo); if (sec[1] != '\0' && *ressz == 0) { secnum[0] = sec[0]; secnum[1] = '\0'; cp = file = mandoc_malloc(strlen(paths->paths[ipath]) * 2 + strlen(slman) + strlen(secnum) * 2 + strlen(slash) + strlen(name) * 2 + strlen(dot) + strlen(sec) * 2 + strlen(aster) + 1); glob_esc(&cp, paths->paths[ipath], slman); glob_esc(&cp, secnum, slash); glob_esc(&cp, name, dot); glob_esc(&cp, sec, aster); *cp = '\0'; globres = glob(file, 0, NULL, &globinfo); if (globres != 0 && globres != GLOB_NOMATCH) mandoc_msg(MANDOCERR_GLOB, 0, 0, "%s: %s", file, strerror(errno)); free(file); file = NULL; if (globres == 0) goto found; globfree(&globinfo); } if (res != NULL || ipath + 1 != paths->sz) return -1; mandoc_asprintf(&file, "%s.%s", name, sec); globres = stat(file, &sb); free(file); return globres; found: warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s", name, sec, BINM_MAKEWHATIS, paths->paths[ipath]); if (res == NULL) free(file); else if (file == NULL) fs_append(globinfo.gl_pathv, globinfo.gl_pathc, 1, ipath, sec, form, res, ressz); else fs_append(&file, 1, 0, ipath, sec, form, res, ressz); globfree(&globinfo); return 0; } static int fs_search(const struct mansearch *cfg, const struct manpaths *paths, const char *name, struct manpage **res, size_t *ressz) { const char *const sections[] = {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"}; const size_t nsec = sizeof(sections)/sizeof(sections[0]); size_t ipath, isec; assert(cfg->argmode == ARG_NAME); if (res != NULL) *res = NULL; *ressz = 0; for (ipath = 0; ipath < paths->sz; ipath++) { if (cfg->sec != NULL) { if (fs_lookup(paths, ipath, cfg->sec, cfg->arch, name, res, ressz) != -1 && cfg->firstmatch) return 0; } else { for (isec = 0; isec < nsec; isec++) if (fs_lookup(paths, ipath, sections[isec], cfg->arch, name, res, ressz) != -1 && cfg->firstmatch) return 0; } } return -1; } static void process_onefile(struct mparse *mp, struct manpage *resp, int startdir, struct outstate *outst, struct manconf *conf) { int fd; /* * Changing directories is not needed in ARG_FILE mode. * Do it on a best-effort basis. Even in case of * failure, some functionality may still work. */ if (resp->ipath != SIZE_MAX) (void)chdir(conf->manpath.paths[resp->ipath]); else if (startdir != -1) (void)fchdir(startdir); mandoc_msg_setinfilename(resp->file); if (resp->file != NULL) { if ((fd = mparse_open(mp, resp->file)) == -1) { mandoc_msg(resp->ipath == SIZE_MAX ? MANDOCERR_BADARG_BAD : MANDOCERR_OPEN, 0, 0, "%s", strerror(errno)); mandoc_msg_setinfilename(NULL); return; } } else fd = STDIN_FILENO; if (outst->use_pager) { outst->use_pager = 0; outst->tag_files = term_tag_init(conf->output.outfilename, outst->outtype == OUTT_HTML ? ".html" : "", conf->output.tagfilename); if ((conf->output.outfilename != NULL || conf->output.tagfilename != NULL) && pledge("stdio rpath cpath", NULL) == -1) { mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno)); exit(mandoc_msg_getrc()); } } if (outst->had_output && outst->outtype <= OUTT_UTF8) { if (outst->outdata == NULL) outdata_alloc(outst, &conf->output); terminal_sepline(outst->outdata); } if (resp->form == FORM_SRC) parse(mp, fd, resp->file, outst, conf); else { passthrough(fd, conf->output.synopsisonly); outst->had_output = 1; } if (ferror(stdout)) { if (outst->tag_files != NULL) { mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s: %s", outst->tag_files->ofn, strerror(errno)); term_tag_unlink(); outst->tag_files = NULL; } else mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s", strerror(errno)); } mandoc_msg_setinfilename(NULL); } static void parse(struct mparse *mp, int fd, const char *file, struct outstate *outst, struct manconf *conf) { static struct manpaths basepaths; static int previous; struct roff_meta *meta; assert(fd >= 0); if (file == NULL) file = ""; if (previous) mparse_reset(mp); else previous = 1; mparse_readfd(mp, fd, file); if (fd != STDIN_FILENO) close(fd); /* * With -Wstop and warnings or errors of at least the requested * level, do not produce output. */ if (outst->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK) return; if (outst->outdata == NULL) outdata_alloc(outst, &conf->output); else if (outst->outtype == OUTT_HTML) html_reset(outst->outdata); mandoc_xr_reset(); meta = mparse_result(mp); /* Execute the out device, if it exists. */ outst->had_output = 1; if (meta->macroset == MACROSET_MDOC) { switch (outst->outtype) { case OUTT_HTML: html_mdoc(outst->outdata, meta); break; case OUTT_TREE: tree_mdoc(outst->outdata, meta); break; case OUTT_MAN: man_mdoc(outst->outdata, meta); break; case OUTT_PDF: case OUTT_ASCII: case OUTT_UTF8: case OUTT_LOCALE: case OUTT_PS: terminal_mdoc(outst->outdata, meta); break; case OUTT_MARKDOWN: markdown_mdoc(outst->outdata, meta); break; default: break; } } if (meta->macroset == MACROSET_MAN) { switch (outst->outtype) { case OUTT_HTML: html_man(outst->outdata, meta); break; case OUTT_TREE: tree_man(outst->outdata, meta); break; case OUTT_MAN: mparse_copy(mp); break; case OUTT_PDF: case OUTT_ASCII: case OUTT_UTF8: case OUTT_LOCALE: case OUTT_PS: terminal_man(outst->outdata, meta); break; case OUTT_MARKDOWN: mandoc_msg(MANDOCERR_MAN_TMARKDOWN, 0, 0, NULL); break; default: break; } } if (conf->output.tag != NULL && conf->output.tag_found == 0 && tag_exists(conf->output.tag)) conf->output.tag_found = 1; if (mandoc_msg_getmin() < MANDOCERR_STYLE) { if (basepaths.sz == 0) manpath_base(&basepaths); check_xr(&basepaths); } else if (mandoc_msg_getmin() < MANDOCERR_WARNING) check_xr(&conf->manpath); } static void check_xr(struct manpaths *paths) { struct mansearch search; struct mandoc_xr *xr; size_t sz; for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) { if (xr->line == -1) continue; search.arch = NULL; search.sec = xr->sec; search.outkey = NULL; search.argmode = ARG_NAME; search.firstmatch = 1; if (mansearch(&search, paths, 1, &xr->name, NULL, &sz)) continue; if (fs_search(&search, paths, xr->name, NULL, &sz) != -1) continue; if (xr->count == 1) mandoc_msg(MANDOCERR_XR_BAD, xr->line, xr->pos + 1, "Xr %s %s", xr->name, xr->sec); else mandoc_msg(MANDOCERR_XR_BAD, xr->line, xr->pos + 1, "Xr %s %s (%d times)", xr->name, xr->sec, xr->count); } } static void outdata_alloc(struct outstate *outst, struct manoutput *outconf) { switch (outst->outtype) { case OUTT_HTML: outst->outdata = html_alloc(outconf); break; case OUTT_UTF8: outst->outdata = utf8_alloc(outconf); break; case OUTT_LOCALE: outst->outdata = locale_alloc(outconf); break; case OUTT_ASCII: outst->outdata = ascii_alloc(outconf); break; case OUTT_PDF: outst->outdata = pdf_alloc(outconf); break; case OUTT_PS: outst->outdata = ps_alloc(outconf); break; default: break; } } static void passthrough(int fd, int synopsis_only) { const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"; const char synr[] = "SYNOPSIS"; FILE *stream; char *line, *cp; size_t linesz; ssize_t len, written; int lno, print; stream = NULL; line = NULL; linesz = 0; if (fflush(stdout) == EOF) { mandoc_msg(MANDOCERR_FFLUSH, 0, 0, "%s", strerror(errno)); goto done; } if ((stream = fdopen(fd, "r")) == NULL) { close(fd); mandoc_msg(MANDOCERR_FDOPEN, 0, 0, "%s", strerror(errno)); goto done; } lno = print = 0; while ((len = getline(&line, &linesz, stream)) != -1) { lno++; cp = line; if (synopsis_only) { if (print) { if ( ! isspace((unsigned char)*cp)) goto done; while (isspace((unsigned char)*cp)) { cp++; len--; } } else { if (strcmp(cp, synb) == 0 || strcmp(cp, synr) == 0) print = 1; continue; } } for (; len > 0; len -= written) { if ((written = write(STDOUT_FILENO, cp, len)) == -1) { mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s", strerror(errno)); goto done; } } } if (ferror(stream)) mandoc_msg(MANDOCERR_GETLINE, lno, 0, "%s", strerror(errno)); done: free(line); if (stream != NULL) fclose(stream); } static int woptions(char *arg, enum mandoc_os *os_e, int *wstop) { char *v, *o; const char *toks[11]; toks[0] = "stop"; toks[1] = "all"; toks[2] = "base"; toks[3] = "style"; toks[4] = "warning"; toks[5] = "error"; toks[6] = "unsupp"; toks[7] = "fatal"; toks[8] = "openbsd"; toks[9] = "netbsd"; toks[10] = NULL; while (*arg) { o = arg; switch (getsubopt(&arg, (char * const *)toks, &v)) { case 0: *wstop = 1; break; case 1: case 2: mandoc_msg_setmin(MANDOCERR_BASE); break; case 3: mandoc_msg_setmin(MANDOCERR_STYLE); break; case 4: mandoc_msg_setmin(MANDOCERR_WARNING); break; case 5: mandoc_msg_setmin(MANDOCERR_ERROR); break; case 6: mandoc_msg_setmin(MANDOCERR_UNSUPP); break; case 7: mandoc_msg_setmin(MANDOCERR_BADARG); break; case 8: mandoc_msg_setmin(MANDOCERR_BASE); *os_e = MANDOC_OS_OPENBSD; break; case 9: mandoc_msg_setmin(MANDOCERR_BASE); *os_e = MANDOC_OS_NETBSD; break; default: mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o); return -1; } } return 0; } /* * Wait until moved to the foreground, * then fork the pager and wait for the user to close it. */ static void run_pager(struct outstate *outst, char *tag_target) { int signum, status; pid_t man_pgid, tc_pgid; pid_t pager_pid, wait_pid; man_pgid = getpgid(0); outst->tag_files->tcpgid = man_pgid == getpid() ? getpgid(getppid()) : man_pgid; pager_pid = 0; signum = SIGSTOP; for (;;) { /* Stop here until moved to the foreground. */ tc_pgid = tcgetpgrp(STDOUT_FILENO); if (tc_pgid != man_pgid) { if (tc_pgid == pager_pid) { (void)tcsetpgrp(STDOUT_FILENO, man_pgid); if (signum == SIGTTIN) continue; } else outst->tag_files->tcpgid = tc_pgid; kill(0, signum); continue; } /* Once in the foreground, activate the pager. */ if (pager_pid) { (void)tcsetpgrp(STDOUT_FILENO, pager_pid); kill(pager_pid, SIGCONT); } else pager_pid = spawn_pager(outst, tag_target); /* Wait for the pager to stop or exit. */ while ((wait_pid = waitpid(pager_pid, &status, WUNTRACED)) == -1 && errno == EINTR) continue; if (wait_pid == -1) { mandoc_msg(MANDOCERR_WAIT, 0, 0, "%s", strerror(errno)); break; } if (!WIFSTOPPED(status)) break; signum = WSTOPSIG(status); } } static pid_t spawn_pager(struct outstate *outst, char *tag_target) { const struct timespec timeout = { 0, 100000000 }; /* 0.1s */ #define MAX_PAGER_ARGS 16 char *argv[MAX_PAGER_ARGS]; const char *pager; char *cp; size_t cmdlen; int argc, use_ofn; pid_t pager_pid; assert(outst->tag_files->ofd == -1); assert(outst->tag_files->tfs == NULL); pager = getenv("MANPAGER"); if (pager == NULL || *pager == '\0') pager = getenv("PAGER"); if (pager == NULL || *pager == '\0') pager = "less"; cp = mandoc_strdup(pager); /* * Parse the pager command into words. * Intentionally do not do anything fancy here. */ argc = 0; while (argc + 5 < MAX_PAGER_ARGS) { argv[argc++] = cp; cp = strchr(cp, ' '); if (cp == NULL) break; *cp++ = '\0'; while (*cp == ' ') cp++; if (*cp == '\0') break; } /* For more(1) and less(1), use the tag file. */ use_ofn = 1; if (*outst->tag_files->tfn != '\0' && (cmdlen = strlen(argv[0])) >= 4) { cp = argv[0] + cmdlen - 4; if (strcmp(cp, "less") == 0 || strcmp(cp, "more") == 0) { argv[argc++] = mandoc_strdup("-T"); argv[argc++] = outst->tag_files->tfn; if (tag_target != NULL) { argv[argc++] = mandoc_strdup("-t"); argv[argc++] = tag_target; use_ofn = 0; } } } if (use_ofn) { if (outst->outtype == OUTT_HTML && tag_target != NULL) mandoc_asprintf(&argv[argc], "file://%s#%s", outst->tag_files->ofn, tag_target); else argv[argc] = outst->tag_files->ofn; argc++; } argv[argc] = NULL; switch (pager_pid = fork()) { case -1: mandoc_msg(MANDOCERR_FORK, 0, 0, "%s", strerror(errno)); exit(mandoc_msg_getrc()); case 0: break; default: (void)setpgid(pager_pid, 0); (void)tcsetpgrp(STDOUT_FILENO, pager_pid); if (pledge("stdio rpath tmppath tty proc", NULL) == -1) { mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno)); exit(mandoc_msg_getrc()); } outst->tag_files->pager_pid = pager_pid; return pager_pid; } /* * The child process becomes the pager. * Do not start it before controlling the terminal. */ while (tcgetpgrp(STDOUT_FILENO) != getpid()) nanosleep(&timeout, NULL); execvp(argv[0], argv); mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno)); _exit(mandoc_msg_getrc()); }