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Integrate getdelim() and getline() support into Tor.

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This commit is contained in:
Nick Mathewson 2018-07-10 10:23:29 -04:00
parent 1604c0fe0e
commit b04d719c10
5 changed files with 49 additions and 10 deletions
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2
configure.ac
View File

@ -585,7 +585,9 @@ AC_CHECK_FUNCS(
ftime \
get_current_dir_name \
getaddrinfo \
getdelim \
getifaddrs \
getline \
getpass \
getrlimit \
gettimeofday \

16
src/ext/getdelim.c
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@ -30,21 +30,19 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <nbcompat.h>
#include <nbcompat/stdio.h>
#include <nbcompat/stdlib.h>
#if !HAVE_GETDELIM
#ifndef BUFSIZ
#define BUFSIZ 512
#endif
ssize_t
getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
compat_getdelim_(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
{
char *ptr, *eptr;
if (*buf == NULL || *bufsiz == 0) {
*bufsiz = BUFSIZ;
if ((*buf = malloc(*bufsiz)) == NULL)
if ((*buf = raw_malloc(*bufsiz)) == NULL)
return -1;
}
@ -69,7 +67,7 @@ getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
char *nbuf;
size_t nbufsiz = *bufsiz * 2;
ssize_t d = ptr - *buf;
if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
if ((nbuf = raw_realloc(*buf, nbufsiz)) == NULL)
return -1;
*buf = nbuf;
*bufsiz = nbufsiz;
@ -78,5 +76,3 @@ getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
}
}
}
#endif

3
src/lib/fs/.may_include
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@ -1,4 +1,7 @@
orconfig.h
ext/getdelim.c
lib/cc/*.h
lib/container/*.h
lib/encoding/*.h

4
src/lib/fs/files.c
View File

@ -715,3 +715,7 @@ read_file_to_str, (const char *filename, int flags, struct stat *stat_out))
return string;
}
#if !defined(HAVE_GETDELIM) || defined(TOR_UNIT_TESTS)
#include "ext/getdelim.c"
#endif

34
src/lib/fs/files.h
View File

@ -103,4 +103,38 @@ char *read_file_to_str_until_eof(int fd, size_t max_bytes_to_read,
size_t *sz_out)
ATTR_MALLOC;
#if !defined(HAVE_GETDELIM) || defined(TOR_UNIT_TESTS)
ssize_t compat_getdelim_(char **lineptr, size_t *n, int delim, FILE *stream);
#endif
#ifdef HAVE_GETDELIM
/**
* Cross-platform wrapper for getdelim(): behaves as the POSIX-standard
* getdelim() function.
*
* Note that this function will use the libc memory allocator -- so any memory
* passed to this function must come from raw_malloc(), and must be freed by
* raw_free() -- don't use tor_malloc() and tor_free() with this.
*/
#define tor_getdelim(lineptr, n, delim, stream) \
getdelim((lineptr), (n), (delim), (stream))
#else
#define tor_getdelim(lineptr, n, delim, stream) \
compat_getdelim_((lineptr), (n), (delim), (stream))
#endif
#ifdef HAVE_GETLINE
/**
* Cross-platform wrapper for getline(): behaves as the POSIX-standard
* getline() function.
*
* See tor_getdelim() for usage notes.
*/
#define tor_getline(lineptr, n, stream) \
getline((lineptr), (n), (stream))
#else
#define tor_getline(lineptr, n, stream) \
tor_getdelim((lineptr), (n), '\n', (stream))
#endif
#endif