=================================================================== RCS file: /cvs/mandoc/main.c,v retrieving revision 1.188 retrieving revision 1.350 diff -u -p -r1.188 -r1.350 --- mandoc/main.c 2014/08/30 18:08:10 1.188 +++ mandoc/main.c 2020/06/15 17:25:42 1.350 @@ -1,62 +1,73 @@ -/* $Id: main.c,v 1.188 2014/08/30 18:08:10 schwarze Exp $ */ +/* $Id: main.c,v 1.350 2020/06/15 17:25:42 schwarze Exp $ */ /* + * Copyright (c) 2010-2012, 2014-2020 Ingo Schwarze * Copyright (c) 2008-2012 Kristaps Dzonsons - * Copyright (c) 2010, 2011, 2012, 2014 Ingo Schwarze * 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 AUTHOR DISCLAIMS ALL WARRANTIES + * 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 AUTHOR BE LIABLE FOR + * 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 "config.h" #include +#include +#include /* MACHINE */ +#include +#include #include #include +#if HAVE_ERR +#include +#endif #include #include +#include +#include +#if HAVE_SANDBOX_INIT +#include +#endif +#include #include #include #include #include +#include +#include #include -#include "mandoc.h" #include "mandoc_aux.h" -#include "main.h" +#include "mandoc.h" +#include "mandoc_xr.h" +#include "roff.h" #include "mdoc.h" #include "man.h" -#include "manpath.h" +#include "mandoc_parse.h" +#include "tag.h" +#include "term_tag.h" +#include "main.h" +#include "manconf.h" #include "mansearch.h" -#if !defined(__GNUC__) || (__GNUC__ < 2) -# if !defined(lint) -# define __attribute__(x) -# endif -#endif /* !defined(__GNUC__) || (__GNUC__ < 2) */ - enum outmode { OUTMODE_DEF = 0, OUTMODE_FLN, OUTMODE_LST, OUTMODE_ALL, - OUTMODE_INT, OUTMODE_ONE }; -typedef void (*out_mdoc)(void *, const struct mdoc *); -typedef void (*out_man)(void *, const struct man *); -typedef void (*out_free)(void *); - enum outt { OUTT_ASCII = 0, /* -Tascii */ OUTT_LOCALE, /* -Tlocale */ @@ -64,97 +75,149 @@ enum outt { OUTT_TREE, /* -Ttree */ OUTT_MAN, /* -Tman */ OUTT_HTML, /* -Thtml */ - OUTT_XHTML, /* -Txhtml */ + OUTT_MARKDOWN, /* -Tmarkdown */ OUTT_LINT, /* -Tlint */ OUTT_PS, /* -Tps */ OUTT_PDF /* -Tpdf */ }; -struct curparse { - struct mparse *mp; - enum mandoclevel wlevel; /* ignore messages below this */ +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 */ - out_mdoc outmdoc; /* mdoc output ptr */ - out_man outman; /* man output ptr */ - out_free outfree; /* free output ptr */ - void *outdata; /* data for output */ - char outopts[BUFSIZ]; /* buf of output opts */ }; -static int moptions(int *, char *); -static void mmsg(enum mandocerr, enum mandoclevel, - const char *, int, int, const char *); -static void parse(struct curparse *, int, - const char *, enum mandoclevel *); -static enum mandoclevel passthrough(const char *); -static void spawn_pager(void); -static int toptions(struct curparse *, char *); -static void usage(enum argmode) __attribute__((noreturn)); -static void version(void) __attribute__((noreturn)); -static int woptions(struct curparse *, char *); +int mandocdb(int, char *[]); + +static void check_xr(void); +static int fs_lookup(const struct manpaths *, + size_t ipath, 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 manoutput *); +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 const char *progname; +static char help_arg[] = "help"; +static char *help_argv[] = {help_arg, NULL}; int main(int argc, char *argv[]) { - struct curparse curp; - struct mansearch search; - struct manpaths paths; - char *conf_file, *defpaths, *auxpaths; - char *defos; -#if HAVE_SQLITE3 - struct manpage *res, *resp; - size_t isec, i, sz; + 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; + 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; - char sec; -#endif - enum mandoclevel rc; - enum outmode outmode; - int show_usage; - int use_pager; - int options; + int startdir; int c; + enum mandoc_os os_e; /* Check base system conventions. */ + enum outmode outmode; /* According to command line. */ - progname = strrchr(argv[0], '/'); - if (progname == NULL) +#if HAVE_PROGNAME + progname = getprogname(); +#else + if (argc < 1) + progname = mandoc_strdup("mandoc"); + else if ((progname = strrchr(argv[0], '/')) == NULL) progname = argv[0]; else ++progname; + setprogname(progname); +#endif + mandoc_msg_setoutfile(stderr); + if (strncmp(progname, "mandocdb", 8) == 0 || + strcmp(progname, BINM_MAKEWHATIS) == 0) + return mandocdb(argc, argv); + +#if HAVE_PLEDGE + if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno)); + return mandoc_msg_getrc(); + } +#endif +#if HAVE_SANDBOX_INIT + if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1) + errx((int)MANDOCLEVEL_SYSERR, "sandbox_init"); +#endif + /* Search options. */ - memset(&paths, 0, sizeof(struct manpaths)); - conf_file = defpaths = auxpaths = NULL; + 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, "man") == 0) + if (strcmp(progname, BINM_MAN) == 0) search.argmode = ARG_NAME; - else if (strncmp(progname, "apropos", 7) == 0) + else if (strcmp(progname, BINM_APROPOS) == 0) search.argmode = ARG_EXPR; - else if (strncmp(progname, "whatis", 6) == 0) + 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 and formatter options. */ + /* Parser options. */ - memset(&curp, 0, sizeof(struct curparse)); - curp.outtype = OUTT_ASCII; - curp.wlevel = MANDOCLEVEL_FATAL; - options = MPARSE_SO; - defos = NULL; + options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1; + os_e = MANDOC_OS_OTHER; + os_s = NULL; - use_pager = 1; + /* 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 (-1 != (c = getopt(argc, argv, "aC:cfI:iklM:m:O:S:s:T:VW:w"))) { + 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; @@ -163,28 +226,40 @@ main(int argc, char *argv[]) conf_file = optarg; break; case 'c': - use_pager = 0; + 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)) { - fprintf(stderr, - "%s: -I%s: Bad argument\n", - progname, optarg); - return((int)MANDOCLEVEL_BADARG); + if (strncmp(optarg, "os=", 3) != 0) { + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, + "-I %s", optarg); + return mandoc_msg_getrc(); } - if (defos) { - fprintf(stderr, - "%s: -I%s: Duplicate argument\n", - progname, optarg); - return((int)MANDOCLEVEL_BADARG); + if (os_s != NULL) { + mandoc_msg(MANDOCERR_BADARG_DUPE, 0, 0, + "-I %s", optarg); + return mandoc_msg_getrc(); } - defos = mandoc_strdup(optarg + 3); + os_s = optarg + 3; break; - case 'i': - outmode = OUTMODE_INT; + 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; @@ -200,9 +275,7 @@ main(int argc, char *argv[]) auxpaths = optarg; break; case 'O': - search.outkey = optarg; - (void)strlcat(curp.outopts, optarg, BUFSIZ); - (void)strlcat(curp.outopts, ",", BUFSIZ); + oarg = optarg; break; case 'S': search.arch = optarg; @@ -211,19 +284,41 @@ main(int argc, char *argv[]) search.sec = optarg; break; case 'T': - if ( ! toptions(&curp, optarg)) - return((int)MANDOCLEVEL_BADARG); + 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(&curp, optarg)) - return((int)MANDOCLEVEL_BADARG); + if (woptions(optarg, &os_e, &outst.wstop) == -1) + return mandoc_msg_getrc(); break; case 'w': outmode = OUTMODE_FLN; break; - case 'V': - version(); - /* NOTREACHED */ default: show_usage = 1; break; @@ -235,11 +330,12 @@ main(int argc, char *argv[]) /* Postprocess options. */ - if (outmode == OUTMODE_DEF) { + switch (outmode) { + case OUTMODE_DEF: switch (search.argmode) { case ARG_FILE: outmode = OUTMODE_ALL; - use_pager = 0; + outst.use_pager = 0; break; case ARG_NAME: outmode = OUTMODE_ONE; @@ -248,186 +344,334 @@ main(int argc, char *argv[]) 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(); } - /* Parse arguments. */ + 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(); + } + } + } - argc -= optind; - argv += optind; -#if HAVE_SQLITE3 - resp = NULL; -#endif + if (outst.outtype != OUTT_TREE || conf.output.noval == 0) + options |= MPARSE_VALIDATE; - /* Quirk for a man(1) section argument without -s. */ + if (outmode == OUTMODE_FLN || + outmode == OUTMODE_LST || + !isatty(STDOUT_FILENO)) + outst.use_pager = 0; - if (search.argmode == ARG_NAME && - argv[0] != NULL && - isdigit((unsigned char)argv[0][0]) && - (argv[0][1] == '\0' || !strcmp(argv[0], "3p"))) { - search.sec = argv[0]; - argv++; - argc--; + 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; } - rc = MANDOCLEVEL_OK; +#if HAVE_PLEDGE + if (outst.use_pager == 0) { + if (pledge("stdio rpath", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, + "%s", strerror(errno)); + return mandoc_msg_getrc(); + } + } +#endif - /* man(1), whatis(1), apropos(1) */ + /* Parse arguments. */ - if (search.argmode != ARG_FILE) { -#if HAVE_SQLITE3 - if (argc == 0) - usage(search.argmode); + if (argc > 0) { + argc -= optind; + argv += optind; + } - /* Access the mandoc database. */ + /* + * Quirks for help(1) and man(1), + * in particular for a section argument without -s. + */ - manpath_parse(&paths, conf_file, defpaths, auxpaths); - mansearch_setup(1); - if( ! mansearch(&search, &paths, argc, argv, &res, &sz)) - usage(search.argmode); - manpath_free(&paths); - resp = res; - - if (sz == 0) { - if (search.argmode == ARG_NAME) - fprintf(stderr, "%s: No entry for %s " - "in the manual.\n", progname, argv[0]); - rc = MANDOCLEVEL_BADARG; - goto out; + 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"); +#ifdef MACHINE + if (search.arch == NULL) + search.arch = MACHINE; +#endif + if (outmode == OUTMODE_ONE) + search.firstmatch = 1; + } - /* - * For standard man(1) and -a output mode, - * prepare for copying filename pointers - * into the program parameter array. - */ + /* + * Use the first argument for -O tag in addition to + * using it as a search term for man(1) or apropos(1). + */ - if (outmode == OUTMODE_ONE) { - argc = 1; - best_prio = 10; - } else if (outmode == OUTMODE_ALL) - argc = (int)sz; + 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; + } - /* Iterate all matching manuals. */ + /* Read the configuration file. */ - for (i = 0; i < sz; i++) { - if (outmode == OUTMODE_FLN) - puts(res[i].file); - else if (outmode == OUTMODE_LST) - printf("%s - %s\n", res[i].names, - res[i].output == NULL ? "" : - res[i].output); - else if (outmode == OUTMODE_ONE) { - /* Search for the best section. */ - isec = strcspn(res[i].file, "123456789"); - sec = res[i].file[isec]; - if ('\0' == sec) + if (search.argmode != ARG_FILE) + 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; - prio = sec_prios[sec - '1']; + } + 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 && + (strlen(sec) <= ssz + 3 || + strcmp(sec + strlen(sec) - ssz, + search.sec) != 0)) + prio += 20; /* Wrong file ext. */ if (prio >= best_prio) continue; best_prio = prio; - resp = res + i; + ib = i; } + res = mandoc_reallocarray(res, ressz + 1, + sizeof(*res)); + memcpy(res + ressz++, resn + ib, sizeof(*resn)); } - /* - * For man(1), -a and -i output mode, fall through - * to the main mandoc(1) code iterating files - * and running the parsers on each of them. - */ + /* apropos(1), whatis(1): Process the full search expression. */ - if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST) + } 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; -#else - fputs("mandoc: database support not compiled in\n", - stderr); - return((int)MANDOCLEVEL_BADARG); -#endif - } + } - /* mandoc(1) */ + /* mandoc(1): Take command line arguments as file names. */ - if ( ! moptions(&options, auxpaths)) - return((int)MANDOCLEVEL_BADARG); + } 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; + } + } - if (use_pager && isatty(STDOUT_FILENO)) - spawn_pager(); + 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; + } - curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos); + 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); + /* - * Conditionally start up the lookaside buffer before parsing. + * 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. */ - if (OUTT_MAN == curp.outtype) - mparse_keep(curp.mp); - - if (argc == 0) - parse(&curp, STDIN_FILENO, "", &rc); - - while (argc) { -#if HAVE_SQLITE3 - if (resp != NULL) { - if (resp->form) - parse(&curp, -1, resp->file, &rc); - else - rc = passthrough(resp->file); - resp++; - } else -#endif - parse(&curp, -1, *argv++, &rc); - if (MANDOCLEVEL_OK != rc && curp.wstop) + 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; - argc--; } + 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(); - if (curp.outfree) - (*curp.outfree)(curp.outdata); - if (curp.mp) - mparse_free(curp.mp); - -#if HAVE_SQLITE3 out: - if (search.argmode != ARG_FILE) { - mansearch_free(res, sz); - mansearch_setup(0); - } -#endif + mansearch_free(res, ressz); + if (search.argmode != ARG_FILE) + manconf_free(&conf); - free(defos); + if (outst.tag_files != NULL) { + if (term_tag_close() != -1) + run_pager(&outst, conf.output.tag); + term_tag_unlink(); + } else if (outst.had_output && outst.outtype != OUTT_LINT) + mandoc_msg_summary(); - return((int)rc); + return (int)mandoc_msg_getrc(); } static void -version(void) -{ - - printf("mandoc %s\n", VERSION); - exit((int)MANDOCLEVEL_OK); -} - -static void usage(enum argmode argmode) { - switch (argmode) { case ARG_FILE: - fputs("usage: mandoc [-acfklV] [-Ios=name] " - "[-mformat] [-Ooption] [-Toutput] [-Wlevel]\n" - "\t [file ...]\n", stderr); + 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 [-acfhklVw] [-C file] " - "[-M path] [-m path] [-S arch] [-s section]\n" - "\t [section] name ...\n", stderr); + 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 [-acfklVw] [-C file] " + 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 [-acfklVw] [-C file] " + fputs("usage: apropos [-afk] [-C file] " "[-M path] [-m path] [-O outkey] [-S arch]\n" "\t [-s section] expression ...\n", stderr); break; @@ -436,316 +680,545 @@ usage(enum argmode argmode) } static void -parse(struct curparse *curp, int fd, const char *file, - enum mandoclevel *level) +glob_esc(char **dst, const char *src, const char *suffix) { - enum mandoclevel rc; - struct mdoc *mdoc; - struct man *man; + while (*src != '\0') { + if (strchr("*?[", *src) != NULL) + *(*dst)++ = '\\'; + *(*dst)++ = *src++; + } + while (*suffix != '\0') + *(*dst)++ = *suffix++; +} - /* Begin by parsing the file itself. */ +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; + struct manpage *page; + char *file, *cp; + int globres; + enum form form; - assert(file); - assert(fd >= -1); + const char *const slman = "/man"; + const char *const slash = "/"; + const char *const sglob = ".[01-9]*"; - rc = mparse_readfd(curp->mp, fd, file); + 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); - /* Stop immediately if the parse has failed. */ + 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 (MANDOCLEVEL_FATAL <= rc) - goto cleanup; + 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); + if (globres == 0) + file = mandoc_strdup(*globinfo.gl_pathv); + globfree(&globinfo); + if (globres == 0) { + if (stat(file, &sb) != -1) + goto found; + free(file); + } + 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); + return 0; + } + *res = mandoc_reallocarray(*res, ++*ressz, sizeof(**res)); + page = *res + (*ressz - 1); + page->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; + 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(); + } + 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->output); + 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 manoutput *outconf) +{ + 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 (MANDOCLEVEL_OK != rc && curp->wstop) - goto cleanup; + if (outst->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK) + return; - /* If unset, allocate output dev now (if applicable). */ + if (outst->outdata == NULL) + outdata_alloc(outst, outconf); + else if (outst->outtype == OUTT_HTML) + html_reset(outst->outdata); - if ( ! (curp->outman && curp->outmdoc)) { - switch (curp->outtype) { - case OUTT_XHTML: - curp->outdata = xhtml_alloc(curp->outopts); - curp->outfree = html_free; - break; + 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: - curp->outdata = html_alloc(curp->outopts); - curp->outfree = html_free; + html_mdoc(outst->outdata, meta); break; - case OUTT_UTF8: - curp->outdata = utf8_alloc(curp->outopts); - curp->outfree = ascii_free; + case OUTT_TREE: + tree_mdoc(outst->outdata, meta); break; - case OUTT_LOCALE: - curp->outdata = locale_alloc(curp->outopts); - curp->outfree = ascii_free; + case OUTT_MAN: + man_mdoc(outst->outdata, meta); break; - case OUTT_ASCII: - curp->outdata = ascii_alloc(curp->outopts); - curp->outfree = ascii_free; - break; case OUTT_PDF: - curp->outdata = pdf_alloc(curp->outopts); - curp->outfree = pspdf_free; - break; + case OUTT_ASCII: + case OUTT_UTF8: + case OUTT_LOCALE: case OUTT_PS: - curp->outdata = ps_alloc(curp->outopts); - curp->outfree = pspdf_free; + terminal_mdoc(outst->outdata, meta); break; + case OUTT_MARKDOWN: + markdown_mdoc(outst->outdata, meta); + break; default: break; } - - switch (curp->outtype) { + } + if (meta->macroset == MACROSET_MAN) { + switch (outst->outtype) { case OUTT_HTML: - /* FALLTHROUGH */ - case OUTT_XHTML: - curp->outman = html_man; - curp->outmdoc = html_mdoc; + html_man(outst->outdata, meta); break; case OUTT_TREE: - curp->outman = tree_man; - curp->outmdoc = tree_mdoc; + tree_man(outst->outdata, meta); break; case OUTT_MAN: - curp->outmdoc = man_mdoc; - curp->outman = man_man; + mparse_copy(mp); break; case OUTT_PDF: - /* FALLTHROUGH */ case OUTT_ASCII: - /* FALLTHROUGH */ case OUTT_UTF8: - /* FALLTHROUGH */ case OUTT_LOCALE: - /* FALLTHROUGH */ case OUTT_PS: - curp->outman = terminal_man; - curp->outmdoc = terminal_mdoc; + terminal_man(outst->outdata, meta); break; default: break; } } + if (outconf->tag != NULL && outconf->tag_found == 0 && + tag_exists(outconf->tag)) + outconf->tag_found = 1; + if (mandoc_msg_getmin() < MANDOCERR_STYLE) + check_xr(); +} - mparse_result(curp->mp, &mdoc, &man, NULL); +static void +check_xr(void) +{ + static struct manpaths paths; + struct mansearch search; + struct mandoc_xr *xr; + size_t sz; - /* Execute the out device, if it exists. */ + if (paths.sz == 0) + manpath_base(&paths); - if (man && curp->outman) - (*curp->outman)(curp->outdata, man); - if (mdoc && curp->outmdoc) - (*curp->outmdoc)(curp->outdata, mdoc); - - cleanup: - - mparse_reset(curp->mp); - - if (*level < rc) - *level = rc; + 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 enum mandoclevel -passthrough(const char *file) +static void +outdata_alloc(struct outstate *outst, struct manoutput *outconf) { - char buf[BUFSIZ]; - const char *syscall; - ssize_t nr, nw, off; - int fd; - - fd = open(file, O_RDONLY); - if (fd == -1) { - syscall = "open"; - goto fail; + 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; } - - while ((nr = read(fd, buf, BUFSIZ)) != -1 && nr != 0) - for (off = 0; off < nr; off += nw) - if ((nw = write(STDOUT_FILENO, buf + off, - (size_t)(nr - off))) == -1 || nw == 0) { - syscall = "write"; - goto fail; - } - - if (nr == 0) { - close(fd); - return(MANDOCLEVEL_OK); - } - - syscall = "read"; -fail: - fprintf(stderr, "%s: %s: SYSERR: %s: %s", - progname, file, syscall, strerror(errno)); - return(MANDOCLEVEL_SYSERR); } -static int -moptions(int *options, char *arg) +static void +passthrough(int fd, int synopsis_only) { + const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"; + const char synr[] = "SYNOPSIS"; - if (arg == NULL) - /* nothing to do */; - else if (0 == strcmp(arg, "doc")) - *options |= MPARSE_MDOC; - else if (0 == strcmp(arg, "andoc")) - /* nothing to do */; - else if (0 == strcmp(arg, "an")) - *options |= MPARSE_MAN; - else { - fprintf(stderr, "%s: -m%s: Bad argument\n", - progname, arg); - return(0); - } + FILE *stream; + char *line, *cp; + size_t linesz; + ssize_t len, written; + int lno, print; - return(1); -} + stream = NULL; + line = NULL; + linesz = 0; -static int -toptions(struct curparse *curp, char *arg) -{ + 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; + } - if (0 == strcmp(arg, "ascii")) - curp->outtype = OUTT_ASCII; - else if (0 == strcmp(arg, "lint")) { - curp->outtype = OUTT_LINT; - curp->wlevel = MANDOCLEVEL_WARNING; - } else if (0 == strcmp(arg, "tree")) - curp->outtype = OUTT_TREE; - else if (0 == strcmp(arg, "man")) - curp->outtype = OUTT_MAN; - else if (0 == strcmp(arg, "html")) - curp->outtype = OUTT_HTML; - else if (0 == strcmp(arg, "utf8")) - curp->outtype = OUTT_UTF8; - else if (0 == strcmp(arg, "locale")) - curp->outtype = OUTT_LOCALE; - else if (0 == strcmp(arg, "xhtml")) - curp->outtype = OUTT_XHTML; - else if (0 == strcmp(arg, "ps")) - curp->outtype = OUTT_PS; - else if (0 == strcmp(arg, "pdf")) - curp->outtype = OUTT_PDF; - else { - fprintf(stderr, "%s: -T%s: Bad argument\n", - progname, arg); - return(0); + 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)); - return(1); +done: + free(line); + if (stream != NULL) + fclose(stream); } static int -woptions(struct curparse *curp, char *arg) +woptions(char *arg, enum mandoc_os *os_e, int *wstop) { char *v, *o; - const char *toks[6]; + const char *toks[11]; toks[0] = "stop"; toks[1] = "all"; - toks[2] = "warning"; - toks[3] = "error"; - toks[4] = "fatal"; - toks[5] = NULL; + 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, UNCONST(toks), &v)) { + switch (getsubopt(&arg, (char * const *)toks, &v)) { case 0: - curp->wstop = 1; + *wstop = 1; break; case 1: - /* FALLTHROUGH */ case 2: - curp->wlevel = MANDOCLEVEL_WARNING; + mandoc_msg_setmin(MANDOCERR_BASE); break; case 3: - curp->wlevel = MANDOCLEVEL_ERROR; + mandoc_msg_setmin(MANDOCERR_STYLE); break; case 4: - curp->wlevel = MANDOCLEVEL_FATAL; + 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: - fprintf(stderr, "%s: -W%s: Bad argument\n", - progname, o); - return(0); + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o); + return -1; } } - - return(1); + return 0; } +/* + * Wait until moved to the foreground, + * then fork the pager and wait for the user to close it. + */ static void -mmsg(enum mandocerr t, enum mandoclevel lvl, - const char *file, int line, int col, const char *msg) +run_pager(struct outstate *outst, char *tag_target) { - const char *mparse_msg; + int signum, status; + pid_t man_pgid, tc_pgid; + pid_t pager_pid, wait_pid; - fprintf(stderr, "%s: %s:", progname, file); + man_pgid = getpgid(0); + outst->tag_files->tcpgid = + man_pgid == getpid() ? getpgid(getppid()) : man_pgid; + pager_pid = 0; + signum = SIGSTOP; - if (line) - fprintf(stderr, "%d:%d:", line, col + 1); + for (;;) { + /* Stop here until moved to the foreground. */ - fprintf(stderr, " %s", mparse_strlevel(lvl)); + 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; + } - if (NULL != (mparse_msg = mparse_strerror(t))) - fprintf(stderr, ": %s", mparse_msg); + /* Once in the foreground, activate the pager. */ - if (msg) - fprintf(stderr, ": %s", msg); + if (pager_pid) { + (void)tcsetpgrp(STDOUT_FILENO, pager_pid); + kill(pager_pid, SIGCONT); + } else + pager_pid = spawn_pager(outst, tag_target); - fputc('\n', stderr); + /* 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 void -spawn_pager(void) +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; - int fildes[2]; - int argc; +#if HAVE_LESS_T + size_t cmdlen; +#endif + int argc, use_ofn; + pid_t pager_pid; - if (pipe(fildes) == -1) { - fprintf(stderr, "%s: pipe: %s\n", - progname, strerror(errno)); - return; - } + assert(outst->tag_files->ofd == -1); + assert(outst->tag_files->tfs == NULL); - switch (fork()) { - case -1: - fprintf(stderr, "%s: fork: %s\n", - progname, strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); - case 0: - close(fildes[0]); - if (dup2(fildes[1], STDOUT_FILENO) == -1) { - fprintf(stderr, "%s: dup output: %s\n", - progname, strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); - } - return; - default: - break; - } - - /* The original process becomes the pager. */ - - close(fildes[1]); - if (dup2(fildes[0], STDIN_FILENO) == -1) { - fprintf(stderr, "%s: dup input: %s\n", - progname, strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); - } - pager = getenv("MANPAGER"); if (pager == NULL || *pager == '\0') pager = getenv("PAGER"); if (pager == NULL || *pager == '\0') - pager = "/usr/bin/more -s"; + pager = "more -s"; cp = mandoc_strdup(pager); /* @@ -754,7 +1227,7 @@ spawn_pager(void) */ argc = 0; - while (argc + 1 < MAX_PAGER_ARGS) { + while (argc + 5 < MAX_PAGER_ARGS) { argv[argc++] = cp; cp = strchr(cp, ' '); if (cp == NULL) @@ -765,12 +1238,64 @@ spawn_pager(void) if (*cp == '\0') break; } + + /* For less(1), use the tag file. */ + + use_ofn = 1; +#if HAVE_LESS_T + if (*outst->tag_files->tfn != '\0' && + (cmdlen = strlen(argv[0])) >= 4) { + cp = argv[0] + cmdlen - 4; + if (strcmp(cp, "less") == 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; + } + } + } +#endif + 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; - /* Hand over to the pager. */ + 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 HAVE_PLEDGE + if (pledge("stdio rpath tmppath tty proc", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, + "%s", strerror(errno)); + exit(mandoc_msg_getrc()); + } +#endif + 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); - fprintf(stderr, "%s: exec: %s\n", - progname, strerror(errno)); - exit((int)MANDOCLEVEL_SYSERR); + mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno)); + _exit(mandoc_msg_getrc()); }