mandoc/read.c - diff

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Diff for /mandoc/read.c between version 1.108 and 1.198

version 1.108, 2015/01/14 22:02:50

version 1.198, 2018/08/23 19:33:27

Line 1

/* $Id$ */

* 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

Line 19

#include "config.h"

#include <sys/types.h>

#if HAVE_MMAP

#include <sys/mman.h>

#include <sys/stat.h>

#endif

#include <sys/wait.h>

#include <assert.h>

#include <ctype.h>

#include <errno.h>

#include <fcntl.h>

#include <stdarg.h>

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <zlib.h>

#include "mandoc.h"

#include "mandoc_aux.h"

#include "libmandoc.h"

#include "mandoc.h"

#include "roff.h"

#include "mdoc.h"

#include "man.h"

#include "libmandoc.h"

#define REPARSE_LIMIT 1000

struct mparse {

struct man *pman; /* persistent man parser */

struct mdoc *pmdoc; /* persistent mdoc parser */

struct man *man; /* man parser */

struct mdoc *mdoc; /* mdoc parser */

struct roff *roff; /* roff parser (!NULL) */

const struct mchars *mchars; /* character table */

struct roff_man *man; /* man parser */

char *sodest; /* filename pointed to by .so */

const char *file; /* filename of current input file */

struct buf *primary; /* buffer currently being parsed */

struct buf *secondary; /* preprocessed copy of input */

struct buf *secondary; /* copy of top level input */

const char *defos; /* default operating system */

const char *os_s; /* default operating system */

mandocmsg mmsg; /* warning/error message handler */

enum mandoclevel file_status; /* status of current parse */

enum mandoclevel wlevel; /* ignore messages below this */

enum mandocerr mmin; /* ignore messages below this */

int options; /* parser options */

int gzip; /* current input file is gzipped */

int filenc; /* encoding of the current file */

int reparse_count; /* finite interp. stack */

int line; /* line number in the file */

pid_t child; /* the gunzip(1) process */

};

static void choose_parser(struct mparse *);

static void free_buf_list(struct buf *);

static void resize_buf(struct buf *, size_t);

static void mparse_buf_r(struct mparse *, struct buf, size_t, int);

static enum rofferr mparse_buf_r(struct mparse *, struct buf, size_t, int);

static int read_whole_file(struct mparse *, const char *, int,

struct buf *, int *);

static void mparse_end(struct mparse *);

Line 77 static void mparse_parse_buffer(struct mparse *, str

Line 72 static void mparse_parse_buffer(struct mparse *, str

static const enum mandocerr mandoclimits[MANDOCLEVEL_MAX] = {

MANDOCERR_OK,

MANDOCERR_WARNING,

MANDOCERR_ERROR,

MANDOCERR_FATAL,

MANDOCERR_UNSUPP,

MANDOCERR_MAX,

MANDOCERR_MAX

};

Line 88 static const enum mandocerr mandoclimits[MANDOCLEVEL_M

Line 83 static const enum mandocerr mandoclimits[MANDOCLEVEL_M

static const char * const mandocerrs[MANDOCERR_MAX] = {

"ok",

"base system convention",

"Mdocdate found",

"Mdocdate missing",

"unknown architecture",

"operating system explicitly specified",

"RCS id missing",

"referenced manual not found",

"generic style suggestion",

"legacy man(7) date format",

"normalizing date format to",

"lower case character in document title",

"duplicate RCS id",

"possible typo in section name",

"unterminated quoted argument",

"useless macro",

"consider using OS macro",

"errnos out of order",

"duplicate errno",

"trailing delimiter",

"no blank before trailing delimiter",

"fill mode already enabled, skipping",

"fill mode already disabled, skipping",

"verbatim \"--\", maybe consider using \\(em",

"function name without markup",

"whitespace at end of input line",

"bad comment style",

"generic warning",

/* related to the prologue */

"missing manual title, using UNTITLED",

"missing manual title, using \"\"",

"lower case character in document title",

"missing manual section, using \"\"",

"unknown manual section",

"missing date, using today's date",

"cannot parse date, using it verbatim",

"date in the future, using it anyway",

"missing Os macro, using \"\"",

"duplicate prologue macro",

"late prologue macro",

"skipping late title macro",

"prologue macros out of order",

/* related to document structure */

Line 109 static const char * const mandocerrs[MANDOCERR_MAX] =

Line 132 static const char * const mandocerrs[MANDOCERR_MAX] =

"no document body",

"content before first section header",

"first section is not \"NAME\"",

"bad NAME section contents",

"NAME section without Nm before Nd",

"NAME section without description",

"description not at the end of NAME",

"bad NAME section content",

"missing comma before name",

"missing description line, using \"\"",

"description line outside NAME section",

"sections out of conventional order",

"duplicate section title",

"unexpected section",

"cross reference to self",

"unusual Xr order",

"unusual Xr punctuation",

"AUTHORS section without An macro",

Line 126 static const char * const mandocerrs[MANDOCERR_MAX] =

Line 156 static const char * const mandocerrs[MANDOCERR_MAX] =

"blocks badly nested",

"nested displays are not portable",

"moving content out of list",

".Vt block has child macro",

"first macro on line",

"fill mode already enabled, skipping",

"fill mode already disabled, skipping",

"line scope broken",

"skipping blank line in line scope",

/* related to missing macro arguments */

"skipping empty request",

"conditional request controls empty scope",

"skipping empty macro",

"empty block",

"empty argument, using 0n",

"argument count wrong",

"missing display type, using -ragged",

"list type is not the first argument",

"missing -width in -tag list, using 8n",

"missing -width in -tag list, using 6n",

"missing utility name, using \"\"",

"missing function name, using \"\"",

"empty head in list item",

"empty list item",

"missing argument, using next line",

"missing font type, using \\fR",

"unknown font type, using \\fR",

"nothing follows prefix",

"empty reference block",

"missing section argument",

"missing -std argument, adding it",

"missing option string, using \"\"",

"missing resource identifier, using \"\"",

"missing eqn box, using \"\"",

/* related to bad macro arguments */

"unterminated quoted argument",

"duplicate argument",

"skipping duplicate argument",

"skipping duplicate display type",

"skipping duplicate list type",

"skipping -width argument",

"wrong number of cells",

"unknown AT&T UNIX version",

"comma in function argument",

"parenthesis in function name",

"unknown library name",

"invalid content in Rs block",

"invalid Boolean argument",

"unknown font, skipping request",

"odd number of characters in request",

/* related to plain text */

"blank line in fill mode, using .sp",

"tab in filled text",

"whitespace at end of input line",

"new sentence, new line",

"bad comment style",

"invalid escape sequence",

"undefined string, using \"\"",

/* related to tables */

"tbl line starts with span",

"tbl column starts with span",

"skipping vertical bar in tbl layout",

"generic error",

/* related to equations */

"unexpected equation scope closure",

"equation scope open on exit",

"overlapping equation scopes",

"unexpected end of equation",

/* related to tables */

"bad table syntax",

"non-alphabetic character in tbl options",

"bad table option",

"skipping unknown tbl option",

"bad table layout",

"missing tbl option argument",

"no table layout cells specified",

"wrong tbl option argument size",

"no table data cells specified",

"empty tbl layout",

"ignore data in cell",

"invalid character in tbl layout",

"data block still open",

"unmatched parenthesis in tbl layout",

"ignoring extra data cells",

"tbl without any data cells",

"ignoring macro in table",

"ignoring data in spanned tbl cell",

"ignoring extra tbl data cells",

"data block open at end of tbl",

/* related to document structure and macros */

NULL,

"duplicate prologue macro",

"skipping late title macro",

"input stack limit exceeded, infinite loop?",

"skipping bad character",

"skipping unknown macro",

"ignoring request outside macro",

"skipping insecure request",

"skipping item outside list",

"skipping column outside column list",

"skipping end of block that is not open",

"fewer RS blocks open, skipping",

"inserting missing end of block",

"appending missing end of block",

/* related to request and macro arguments */

"escaped character not allowed in a name",

"argument count wrong",

"using macro argument outside macro",

"argument number is not numeric",

"NOT IMPLEMENTED: Bd -file",

"skipping display without arguments",

"missing list type, using -item",

"argument is not numeric, using 1",

"missing manual name, using \"\"",

"uname(3) system call failed, using UNKNOWN",

"unknown standard specifier",

"skipping request without numeric argument",

"excessive shift",

"NOT IMPLEMENTED: .so with absolute path or \"..\"",

".so request failed",

"skipping all arguments",

"skipping excess arguments",

"divide by zero",

"generic fatal error",

"unsupported feature",

"input too large",

"NOT IMPLEMENTED: .so with absolute path or \"..\"",

"unsupported control character",

".so request failed",

"unsupported roff request",

"eqn delim option in tbl",

"unsupported tbl layout modifier",

"ignoring macro in table",

};

static const char * const mandoclevels[MANDOCLEVEL_MAX] = {

"SUCCESS",

"RESERVED",

"STYLE",

"WARNING",

"ERROR",

"FATAL",

"UNSUPP",

"BADARG",

"SYSERR"

};

Line 241 resize_buf(struct buf *buf, size_t initial)

Line 291 resize_buf(struct buf *buf, size_t initial)

}

static void

free_buf_list(struct buf *buf)

{

struct buf *tmp;

while (buf != NULL) {

tmp = buf;

buf = tmp->next;

free(tmp->buf);

free(tmp);

}

static void

choose_parser(struct mparse *curp)

{

char *cp, *ep;

Line 275 choose_parser(struct mparse *curp)

Line 338 choose_parser(struct mparse *curp)

}

if (format == MPARSE_MDOC) {

if (NULL == curp->pmdoc)

curp->man->macroset = MACROSET_MDOC;

curp->pmdoc = mdoc_alloc(

if (curp->man->mdocmac == NULL)

curp->roff, curp, curp->defos,

curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);

MPARSE_QUICK & curp->options ? 1 : 0);

} else {

assert(curp->pmdoc);

curp->man->macroset = MACROSET_MAN;

curp->mdoc = curp->pmdoc;

if (curp->man->manmac == NULL)

return;

curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);

}

curp->man->first->tok = TOKEN_NONE;

/* Fall back to man(7) as a last resort. */

if (NULL == curp->pman)

curp->pman = man_alloc(

curp->roff, curp, curp->defos,

MPARSE_QUICK & curp->options ? 1 : 0);

assert(curp->pman);

curp->man = curp->pman;

}

Line 301 choose_parser(struct mparse *curp)

Line 356 choose_parser(struct mparse *curp)

* macros, inline equations, and input line traps)

* and indirectly (for .so file inclusion).

static void

static enum rofferr

mparse_buf_r(struct mparse *curp, struct buf blk, size_t i, int start)

{

const struct tbl_span *span;

struct buf ln;

struct buf *firstln, *lastln, *thisln;

const char *save_file;

char *cp;

size_t pos; /* byte number in the ln buffer */

enum rofferr rr;

enum rofferr line_result, result;

int of;

int lnn; /* line number in the real file */

int fd;

unsigned char c;

memset(&ln, 0, sizeof(ln));

ln.sz = 256;

ln.buf = mandoc_malloc(ln.sz);

ln.next = NULL;

firstln = NULL;

lnn = curp->line;

pos = 0;

result = ROFF_CONT;

while (i < blk.sz) {

if (0 == pos && '\0' == blk.buf[i])

Line 350 mparse_buf_r(struct mparse *curp, struct buf blk, size

Line 411 mparse_buf_r(struct mparse *curp, struct buf blk, size

* Make sure we have space for the worst

* case of 11 bytes: "\\[u10ffff]\0"

* case of 12 bytes: "\\[u10ffff]\n\0"

if (pos + 11 > ln.sz)

if (pos + 12 > ln.sz)

resize_buf(&ln, 256);

Line 364 mparse_buf_r(struct mparse *curp, struct buf blk, size

Line 425 mparse_buf_r(struct mparse *curp, struct buf blk, size

if (c & 0x80) {

if ( ! (curp->filenc && preconv_encode(

&blk, &i, &ln, &pos, &curp->filenc))) {

mandoc_vmsg(MANDOCERR_BADCHAR,

mandoc_vmsg(MANDOCERR_CHAR_BAD, curp,

curp, curp->line, pos,

curp->line, pos, "0x%x", c);

"0x%x", c);

ln.buf[pos++] = '?';

i++;

}

Line 378 mparse_buf_r(struct mparse *curp, struct buf blk, size

Line 438 mparse_buf_r(struct mparse *curp, struct buf blk, size

if (c == 0x7f || (c < 0x20 && c != 0x09)) {

mandoc_vmsg(MANDOCERR_BADCHAR, curp,

mandoc_vmsg(c == 0x00 || c == 0x04 ||

curp->line, pos, "0x%x", c);

c > 0x0a ? MANDOCERR_CHAR_BAD :

MANDOCERR_CHAR_UNSUPP,

curp, curp->line, pos, "0x%x", c);

i++;

ln.buf[pos++] = '?';

if (c != '\r')

ln.buf[pos++] = '?';

continue;

}

/* Trailing backslash = a plain char. */

ln.buf[pos++] = blk.buf[i++];

}

ln.buf[pos] = '\0';

if (blk.buf[i] != '\\' || i + 1 == blk.sz) {

ln.buf[pos++] = blk.buf[i++];

* Maintain a lookaside buffer of all lines.

continue;

* parsed from this input source.

}

thisln = mandoc_malloc(sizeof(*thisln));

* Found escape and at least one other character.

thisln->buf = mandoc_strdup(ln.buf);

* When it's a newline character, skip it.

thisln->sz = strlen(ln.buf) + 1;

* When there is a carriage return in between,

thisln->next = NULL;

* skip that one as well.

if (firstln == NULL) {

firstln = lastln = thisln;

if (curp->secondary == NULL)

curp->secondary = firstln;

} else {

lastln->next = thisln;

lastln = thisln;

}

if ('\r' == blk.buf[i + 1] && i + 2 < blk.sz &&

/* XXX Ugly hack to mark the end of the input. */

'\n' == blk.buf[i + 2])

++i;

if ('\n' == blk.buf[i + 1]) {

i += 2;

++lnn;

continue;

}

if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) {

if (i == blk.sz || blk.buf[i] == '\0') {

i += 2;

ln.buf[pos++] = '\n';

/* Comment, skip to end of line */

ln.buf[pos] = '\0';

for (; i < blk.sz; ++i) {

if ('\n' == blk.buf[i]) {

++i;

++lnn;

break;

}

/* Backout trailing whitespaces */

for (; pos > 0; --pos) {

if (ln.buf[pos - 1] != ' ')

break;

if (pos > 2 && ln.buf[pos - 2] == '\\')

break;

}

break;

}

/* Catch escaped bogus characters. */

c = (unsigned char) blk.buf[i+1];

if ( ! (isascii(c) &&

(isgraph(c) || isblank(c)))) {

mandoc_vmsg(MANDOCERR_BADCHAR, curp,

curp->line, pos, "0x%x", c);

i += 2;

ln.buf[pos++] = '?';

continue;

}

/* Some other escape sequence, copy & cont. */

ln.buf[pos++] = blk.buf[i++];

}

if (pos >= ln.sz)

resize_buf(&ln, 256);

ln.buf[pos] = '\0';

* A significant amount of complexity is contained by

* the roff preprocessor. It's line-oriented but can be

Line 463 mparse_buf_r(struct mparse *curp, struct buf blk, size

Line 487 mparse_buf_r(struct mparse *curp, struct buf blk, size

of = 0;

* Maintain a lookaside buffer of all parsed lines. We

* only do this if mparse_keep() has been invoked (the

* buffer may be accessed with mparse_getkeep()).

if (curp->secondary) {

curp->secondary->buf = mandoc_realloc(

curp->secondary->buf,

curp->secondary->sz + pos + 2);

memcpy(curp->secondary->buf +

curp->secondary->sz,

ln.buf, pos);

curp->secondary->sz += pos;

curp->secondary->buf

[curp->secondary->sz] = '\n';

curp->secondary->sz++;

curp->secondary->buf

[curp->secondary->sz] = '\0';

}

rerun:

rr = roff_parseln(curp->roff, curp->line, &ln, &of);

line_result = roff_parseln(curp->roff, curp->line, &ln, &of);

switch (rr) {

switch (line_result) {

case ROFF_REPARSE:

if (REPARSE_LIMIT >= ++curp->reparse_count)

case ROFF_USERCALL:

mparse_buf_r(curp, ln, of, 0);

if (++curp->reparse_count > REPARSE_LIMIT) {

else

result = ROFF_IGN;

mandoc_msg(MANDOCERR_ROFFLOOP, curp,

curp->line, pos, NULL);

pos = 0;

} else {

continue;

result = mparse_buf_r(curp, ln, of, 0);

if (line_result == ROFF_USERCALL) {

if (result == ROFF_USERRET)

result = ROFF_CONT;

roff_userret(curp->roff);

}

if (start || result == ROFF_CONT) {

pos = 0;

continue;

}

goto out;

case ROFF_USERRET:

if (start) {

pos = 0;

continue;

}

result = ROFF_USERRET;

goto out;

case ROFF_APPEND:

pos = strlen(ln.buf);

continue;

Line 504 rerun:

Line 525 rerun:

case ROFF_IGN:

pos = 0;

continue;

case ROFF_ERR:

assert(MANDOCLEVEL_FATAL <= curp->file_status);

break;

case ROFF_SO:

if ( ! (curp->options & MPARSE_SO) &&

(i >= blk.sz || blk.buf[i] == '\0')) {

curp->sodest = mandoc_strdup(ln.buf + of);

free(ln.buf);

goto out;

return;

}

save_file = curp->file;

* We remove `so' clauses from our lookaside

if ((fd = mparse_open(curp, ln.buf + of)) != -1) {

* buffer because we're going to descend into

mparse_readfd(curp, fd, ln.buf + of);

* the file recursively.

close(fd);

curp->file = save_file;

if (curp->secondary)

} else {

curp->secondary->sz -= pos + 1;

curp->file = save_file;

mparse_readfd(curp, -1, ln.buf + of);

if (MANDOCLEVEL_FATAL <= curp->file_status) {

mandoc_vmsg(MANDOCERR_SO_FAIL,

curp, curp->line, pos,

".so %s", ln.buf + of);

break;

ln.sz = mandoc_asprintf(&cp,

".sp\nSee the file %s.\n.sp",

ln.buf + of);

free(ln.buf);

ln.buf = cp;

of = 0;

mparse_buf_r(curp, ln, of, 0);

}

pos = 0;

continue;

Line 534 rerun:

Line 555 rerun:

break;

}

if (curp->man->macroset == MACROSET_NONE)

* If we encounter errors in the recursive parse, make

* sure we don't continue parsing.

if (MANDOCLEVEL_FATAL <= curp->file_status)

break;

* If input parsers have not been allocated, do so now.

* We keep these instanced between parsers, but set them

* locally per parse routine since we can use different

* parsers with each one.

if ( ! (curp->man || curp->mdoc))

choose_parser(curp);

if ((curp->man->macroset == MACROSET_MDOC ?

* Lastly, push down into the parsers themselves.

mdoc_parseln(curp->man, curp->line, ln.buf, of) :

* If libroff returns ROFF_TBL, then add it to the

* currently open parse. Since we only get here if

* there does exist data (see tbl_data.c), we're

* guaranteed that something's been allocated.

* Do the same for ROFF_EQN.

if (rr == ROFF_TBL) {

while ((span = roff_span(curp->roff)) != NULL)

if (curp->man == NULL)

mdoc_addspan(curp->mdoc, span);

else

man_addspan(curp->man, span);

} else if (rr == ROFF_EQN) {

if (curp->man == NULL)

mdoc_addeqn(curp->mdoc, roff_eqn(curp->roff));

else

man_addeqn(curp->man, roff_eqn(curp->roff));

} else if ((curp->man == NULL ?

mdoc_parseln(curp->mdoc, curp->line, ln.buf, of) :

man_parseln(curp->man, curp->line, ln.buf, of)) == 2)

break;

Line 586 rerun:

Line 572 rerun:

pos = 0;

}

out:

free(ln.buf);

if (firstln != curp->secondary)

free_buf_list(firstln);

return result;

}

static int

read_whole_file(struct mparse *curp, const char *file, int fd,

struct buf *fb, int *with_mmap)

{

struct stat st;

gzFile gz;

size_t off;

ssize_t ssz;

int gzerrnum, retval;

#if HAVE_MMAP

if (fstat(fd, &st) == -1) {

struct stat st;

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,

if (-1 == fstat(fd, &st)) {

"fstat: %s", strerror(errno));

perror(file);

return 0;

exit((int)MANDOCLEVEL_SYSERR);

}

Line 611 read_whole_file(struct mparse *curp, const char *file,

Line 602 read_whole_file(struct mparse *curp, const char *file,

* concerned that this is going to tank any machines.

if (S_ISREG(st.st_mode)) {

if (curp->gzip == 0 && S_ISREG(st.st_mode)) {

if (st.st_size >= (1U << 31)) {

if (st.st_size > 0x7fffffff) {

curp->file_status = MANDOCLEVEL_FATAL;

mandoc_msg(MANDOCERR_TOOLARGE, curp, 0, 0, NULL);

if (curp->mmsg)

return 0;

(*curp->mmsg)(MANDOCERR_TOOLARGE,

curp->file_status, file, 0, 0, NULL);

return(0);

}

*with_mmap = 1;

fb->sz = (size_t)st.st_size;

fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0);

if (fb->buf != MAP_FAILED)

return(1);

return 1;

}

#endif

if (curp->gzip) {

* Duplicating the file descriptor is required

* because we will have to call gzclose(3)

* to free memory used internally by zlib,

* but that will also close the file descriptor,

* which this function must not do.

if ((fd = dup(fd)) == -1) {

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,

"dup: %s", strerror(errno));

return 0;

}

if ((gz = gzdopen(fd, "rb")) == NULL) {

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,

"gzdopen: %s", strerror(errno));

close(fd);

return 0;

}

} else

gz = NULL;

* If this isn't a regular file (like, say, stdin), then we must

* go the old way and just read things in bit by bit.

Line 634 read_whole_file(struct mparse *curp, const char *file,

Line 643 read_whole_file(struct mparse *curp, const char *file,

*with_mmap = 0;

off = 0;

retval = 0;

fb->sz = 0;

fb->buf = NULL;

for (;;) {

if (off == fb->sz) {

if (fb->sz == (1U << 31)) {

curp->file_status = MANDOCLEVEL_FATAL;

mandoc_msg(MANDOCERR_TOOLARGE, curp,

if (curp->mmsg)

0, 0, NULL);

(*curp->mmsg)(MANDOCERR_TOOLARGE,

curp->file_status,

file, 0, 0, NULL);

break;

}

resize_buf(fb, 65536);

}

ssz = read(fd, fb->buf + (int)off, fb->sz - off);

ssz = curp->gzip ?

gzread(gz, fb->buf + (int)off, fb->sz - off) :

read(fd, fb->buf + (int)off, fb->sz - off);

if (ssz == 0) {

fb->sz = off;

return(1);

retval = 1;

break;

}

if (ssz == -1) {

perror(file);

if (curp->gzip)

exit((int)MANDOCLEVEL_SYSERR);

(void)gzerror(gz, &gzerrnum);

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0, "read: %s",

curp->gzip && gzerrnum != Z_ERRNO ?

zError(gzerrnum) : strerror(errno));

break;

}

off += (size_t)ssz;

}

free(fb->buf);

if (curp->gzip && (gzerrnum = gzclose(gz)) != Z_OK)

fb->buf = NULL;

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0, "gzclose: %s",

return(0);

gzerrnum == Z_ERRNO ? strerror(errno) :

zError(gzerrnum));

if (retval == 0) {

free(fb->buf);

fb->buf = NULL;

}

return retval;

}

static void

mparse_end(struct mparse *curp)

{

if (curp->man->macroset == MACROSET_NONE)

if (MANDOCLEVEL_FATAL <= curp->file_status)

curp->man->macroset = MACROSET_MAN;

return;

if (curp->man->macroset == MACROSET_MDOC)

mdoc_endparse(curp->man);

if (curp->mdoc == NULL &&

else

curp->man == NULL &&

man_endparse(curp->man);

curp->sodest == NULL) {

if (curp->options & MPARSE_MDOC)

curp->mdoc = curp->pmdoc;

else {

if (curp->pman == NULL)

curp->pman = man_alloc(

curp->roff, curp, curp->defos,

curp->options & MPARSE_QUICK ? 1 : 0);

curp->man = curp->pman;

}

if (curp->mdoc && ! mdoc_endparse(curp->mdoc)) {

assert(MANDOCLEVEL_FATAL <= curp->file_status);

return;

}

if (curp->man && ! man_endparse(curp->man)) {

assert(MANDOCLEVEL_FATAL <= curp->file_status);

return;

}

roff_endparse(curp->roff);

}

Line 732 mparse_parse_buffer(struct mparse *curp, struct buf bl

Line 730 mparse_parse_buffer(struct mparse *curp, struct buf bl

mparse_buf_r(curp, blk, offset, 1);

if (0 == --recursion_depth && MANDOCLEVEL_FATAL > curp->file_status)

if (--recursion_depth == 0)

mparse_end(curp);

curp->primary = svprimary;

Line 749 mparse_readmem(struct mparse *curp, void *buf, size_t

Line 747 mparse_readmem(struct mparse *curp, void *buf, size_t

blk.sz = len;

mparse_parse_buffer(curp, blk, file);

return(curp->file_status);

return curp->file_status;

}

* If a file descriptor is given, use it and assume it points

* to the named file. Otherwise, open the named file.

* Read the whole file into memory and call the parsers.

* Called recursively when an .so request is encountered.

Line 764 mparse_readfd(struct mparse *curp, int fd, const char

Line 760 mparse_readfd(struct mparse *curp, int fd, const char

struct buf blk;

int with_mmap;

int save_filenc;

pid_t save_child;

save_child = curp->child;

if (fd != -1)

curp->child = 0;

else if (mparse_open(curp, &fd, file) != MANDOCLEVEL_OK)

goto out;

if (read_whole_file(curp, file, fd, &blk, &with_mmap)) {

save_filenc = curp->filenc;

curp->filenc = curp->options &

(MPARSE_UTF8 | MPARSE_LATIN1);

mparse_parse_buffer(curp, blk, file);

curp->filenc = save_filenc;

#if HAVE_MMAP

if (with_mmap)

munmap(blk.buf, blk.sz);

else

#endif

free(blk.buf);

}

return curp->file_status;

if (fd != STDIN_FILENO && close(fd) == -1)

perror(file);

mparse_wait(curp);

out:

curp->child = save_child;

return(curp->file_status);

}

enum mandoclevel

int

mparse_open(struct mparse *curp, int *fd, const char *file)

mparse_open(struct mparse *curp, const char *file)

{

int pfd[2];

int save_errno;

char *cp;

int fd;

curp->file = file;

cp = strrchr(file, '.');

curp->gzip = (cp != NULL && ! strcmp(cp + 1, "gz"));

/* Unless zipped, try to just open the file. */

/* First try to use the filename as it is. */

if ((cp = strrchr(file, '.')) == NULL ||

if ((fd = open(file, O_RDONLY)) != -1)

strcmp(cp + 1, "gz")) {

return fd;

curp->child = 0;

if ((*fd = open(file, O_RDONLY)) != -1)

return(MANDOCLEVEL_OK);

/* Open failed; try to append ".gz". */

* If that doesn't work and the filename doesn't

* already end in .gz, try appending .gz.

if ( ! curp->gzip) {

mandoc_asprintf(&cp, "%s.gz", file);

file = cp;

fd = open(cp, O_RDONLY);

} else

cp = NULL;

/* Before forking, make sure the file can be read. */

save_errno = errno;

if (access(file, R_OK) == -1) {

if (cp != NULL)

errno = save_errno;

free(cp);

*fd = -1;

if (fd != -1) {

curp->child = 0;

curp->gzip = 1;

mandoc_msg(MANDOCERR_FILE, curp, 0, 0, strerror(errno));

return fd;

return(MANDOCLEVEL_ERROR);

}

/* Run gunzip(1). */

if (pipe(pfd) == -1) {

perror("pipe");

exit((int)MANDOCLEVEL_SYSERR);

}

switch (curp->child = fork()) {

case -1:

perror("fork");

exit((int)MANDOCLEVEL_SYSERR);

case 0:

close(pfd[0]);

if (dup2(pfd[1], STDOUT_FILENO) == -1) {

perror("dup");

exit((int)MANDOCLEVEL_SYSERR);

}

execlp("gunzip", "gunzip", "-c", file, NULL);

perror("exec");

exit((int)MANDOCLEVEL_SYSERR);

default:

close(pfd[1]);

*fd = pfd[0];

return(MANDOCLEVEL_OK);

}

enum mandoclevel

/* Neither worked, give up. */

mparse_wait(struct mparse *curp)

{

int status;

if (curp->child == 0)

mandoc_msg(MANDOCERR_FILE, curp, 0, 0, strerror(errno));

return(MANDOCLEVEL_OK);

return -1;

if (waitpid(curp->child, &status, 0) == -1) {

perror("wait");

exit((int)MANDOCLEVEL_SYSERR);

}

if (WIFSIGNALED(status)) {

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,

"gunzip died from signal %d", WTERMSIG(status));

return(MANDOCLEVEL_ERROR);

}

if (WEXITSTATUS(status)) {

mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0,

"gunzip failed with code %d", WEXITSTATUS(status));

return(MANDOCLEVEL_ERROR);

}

return(MANDOCLEVEL_OK);

}

struct mparse *

mparse_alloc(int options, enum mandoclevel wlevel, mandocmsg mmsg,

mparse_alloc(int options, enum mandocerr mmin, mandocmsg mmsg,

const struct mchars *mchars, const char *defos)

enum mandoc_os os_e, const char *os_s)

{

struct mparse *curp;

assert(wlevel <= MANDOCLEVEL_FATAL);

curp = mandoc_calloc(1, sizeof(struct mparse));

curp->options = options;

curp->wlevel = wlevel;

curp->mmin = mmin;

curp->mmsg = mmsg;

curp->defos = defos;

curp->os_s = os_s;

curp->mchars = mchars;

curp->roff = roff_alloc(curp, options);

curp->roff = roff_alloc(curp, curp->mchars, options);

curp->man = roff_man_alloc(curp->roff, curp, curp->os_s,

if (curp->options & MPARSE_MDOC)

curp->options & MPARSE_QUICK ? 1 : 0);

curp->pmdoc = mdoc_alloc(

if (curp->options & MPARSE_MDOC) {

curp->roff, curp, curp->defos,

curp->man->macroset = MACROSET_MDOC;

curp->options & MPARSE_QUICK ? 1 : 0);

if (curp->man->mdocmac == NULL)

if (curp->options & MPARSE_MAN)

curp->man->mdocmac = roffhash_alloc(MDOC_Dd, MDOC_MAX);

curp->pman = man_alloc(

} else if (curp->options & MPARSE_MAN) {

curp->roff, curp, curp->defos,

curp->man->macroset = MACROSET_MAN;

curp->options & MPARSE_QUICK ? 1 : 0);

if (curp->man->manmac == NULL)

curp->man->manmac = roffhash_alloc(MAN_TH, MAN_MAX);

return(curp);

}

curp->man->first->tok = TOKEN_NONE;

curp->man->meta.os_e = os_e;

return curp;

}

void

mparse_reset(struct mparse *curp)

{

roff_reset(curp->roff);

roff_man_reset(curp->man);

free_buf_list(curp->secondary);

curp->secondary = NULL;

if (curp->mdoc)

mdoc_reset(curp->mdoc);

if (curp->man)

man_reset(curp->man);

if (curp->secondary)

curp->secondary->sz = 0;

curp->file_status = MANDOCLEVEL_OK;

curp->mdoc = NULL;

curp->man = NULL;

free(curp->sodest);

curp->sodest = NULL;

curp->file_status = MANDOCLEVEL_OK;

curp->gzip = 0;

}

void

mparse_free(struct mparse *curp)

{

roffhash_free(curp->man->mdocmac);

if (curp->pmdoc)

roffhash_free(curp->man->manmac);

mdoc_free(curp->pmdoc);

roff_man_free(curp->man);

if (curp->pman)

roff_free(curp->roff);

man_free(curp->pman);

free_buf_list(curp->secondary);

if (curp->roff)

roff_free(curp->roff);

if (curp->secondary)

free(curp->secondary->buf);

free(curp->secondary);

free(curp->sodest);

free(curp);

}

void

mparse_result(struct mparse *curp,

mparse_result(struct mparse *curp, struct roff_man **man,

struct mdoc **mdoc, struct man **man, char **sodest)

char **sodest)

{

if (sodest && NULL != (*sodest = curp->sodest)) {

*mdoc = NULL;

*man = NULL;

return;

}

if (mdoc)

*mdoc = curp->mdoc;

if (man)

*man = curp->man;

}

void

mparse_updaterc(struct mparse *curp, enum mandoclevel *rc)

{

if (curp->file_status > *rc)

*rc = curp->file_status;

}

void

mandoc_vmsg(enum mandocerr t, struct mparse *m,

int ln, int pos, const char *fmt, ...)

{

Line 988 mandoc_msg(enum mandocerr er, struct mparse *m,

Line 908 mandoc_msg(enum mandocerr er, struct mparse *m,

{

enum mandoclevel level;

level = MANDOCLEVEL_FATAL;

if (er < m->mmin && er != MANDOCERR_FILE)

return;

level = MANDOCLEVEL_UNSUPP;

while (er < mandoclimits[level])

level--;

if (level < m->wlevel && er != MANDOCERR_FILE)

return;

if (m->mmsg)

(*m->mmsg)(er, level, m->file, ln, col, msg);

Line 1006 const char *

Line 926 const char *

mparse_strerror(enum mandocerr er)

{

return(mandocerrs[er]);

return mandocerrs[er];

}

const char *

mparse_strlevel(enum mandoclevel lvl)

{

return(mandoclevels[lvl]);

return mandoclevels[lvl];

}

void

mparse_keep(struct mparse *p)

mparse_copy(const struct mparse *p)

{

struct buf *buf;

assert(NULL == p->secondary);

for (buf = p->secondary; buf != NULL; buf = buf->next)

p->secondary = mandoc_calloc(1, sizeof(struct buf));

puts(buf->buf);

}

const char *

mparse_getkeep(const struct mparse *p)

{

assert(p->secondary);

return(p->secondary->sz ? p->secondary->buf : NULL);

}

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