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authorIngo Schwarze <schwarze@openbsd.org>2013-06-01 22:57:35 +0000
committerIngo Schwarze <schwarze@openbsd.org>2013-06-01 22:57:35 +0000
commit70e9afb64a4407b5bd6d5d15c9fe2d41506b5f71 (patch)
treee5f715096322844a829e84c3d5a6c24bbb729a59 /read.c
parent19125f1325c3d8cc19fa74015cf8db567a55a46e (diff)
downloadmandoc-70e9afb64a4407b5bd6d5d15c9fe2d41506b5f71.tar.gz
This file contains too much complexity.
Remove one layer of indirection by deleting mparse_readfd_r() and doing its work in the public mparse_readfd(). As a bonus, catch recursive .so. This is part of the preparations to resync to openbsd.org.
Diffstat (limited to 'read.c')
-rw-r--r--read.c35
1 files changed, 17 insertions, 18 deletions
diff --git a/read.c b/read.c
index adfc8200..7cb2c128 100644
--- a/read.c
+++ b/read.c
@@ -71,7 +71,6 @@ struct mparse {
static void resize_buf(struct buf *, size_t);
static void mparse_buf_r(struct mparse *, struct buf, int);
-static void mparse_readfd_r(struct mparse *, int, const char *, int);
static void pset(const char *, int, struct mparse *);
static int read_whole_file(const char *, int, struct buf *, int *);
static void mparse_end(struct mparse *);
@@ -490,7 +489,7 @@ rerun:
*/
if (curp->secondary)
curp->secondary->sz -= pos + 1;
- mparse_readfd_r(curp, -1, ln.buf + of, 1);
+ mparse_readfd(curp, -1, ln.buf + of);
if (MANDOCLEVEL_FATAL <= curp->file_status)
break;
pos = 0;
@@ -664,19 +663,25 @@ mparse_end(struct mparse *curp)
}
static void
-mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file,
- int re)
+mparse_parse_buffer(struct mparse *curp, struct buf blk, const char *file)
{
const char *svfile;
+ static int recursion_depth;
+
+ if (64 < recursion_depth) {
+ mandoc_msg(MANDOCERR_ROFFLOOP, curp, curp->line, 0, NULL);
+ return;
+ }
/* Line number is per-file. */
svfile = curp->file;
curp->file = file;
curp->line = 1;
+ recursion_depth++;
mparse_buf_r(curp, blk, 1);
- if (0 == re && MANDOCLEVEL_FATAL > curp->file_status)
+ if (0 == --recursion_depth && MANDOCLEVEL_FATAL > curp->file_status)
mparse_end(curp);
curp->file = svfile;
@@ -691,12 +696,12 @@ mparse_readmem(struct mparse *curp, const void *buf, size_t len,
blk.buf = UNCONST(buf);
blk.sz = len;
- mparse_parse_buffer(curp, blk, file, 0);
+ mparse_parse_buffer(curp, blk, file);
return(curp->file_status);
}
-static void
-mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
+enum mandoclevel
+mparse_readfd(struct mparse *curp, int fd, const char *file)
{
struct buf blk;
int with_mmap;
@@ -705,7 +710,7 @@ mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
if (-1 == (fd = open(file, O_RDONLY, 0))) {
perror(file);
curp->file_status = MANDOCLEVEL_SYSERR;
- return;
+ goto out;
}
/*
* Run for each opened file; may be called more than once for
@@ -716,10 +721,10 @@ mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
if ( ! read_whole_file(file, fd, &blk, &with_mmap)) {
curp->file_status = MANDOCLEVEL_SYSERR;
- return;
+ goto out;
}
- mparse_parse_buffer(curp, blk, file, re);
+ mparse_parse_buffer(curp, blk, file);
#ifdef HAVE_MMAP
if (with_mmap)
@@ -730,13 +735,7 @@ mparse_readfd_r(struct mparse *curp, int fd, const char *file, int re)
if (STDIN_FILENO != fd && -1 == close(fd))
perror(file);
-}
-
-enum mandoclevel
-mparse_readfd(struct mparse *curp, int fd, const char *file)
-{
-
- mparse_readfd_r(curp, fd, file, 0);
+out:
return(curp->file_status);
}