/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "common.h"
#include "path.h"
#include "posix.h"
#ifdef GIT_WIN32
#include "win32/posix.h"
#include "win32/w32_util.h"
#else
#include <dirent.h>
#endif
#include <stdio.h>
#include <ctype.h>
#define LOOKS_LIKE_DRIVE_PREFIX(S) (git__isalpha((S)[0]) && (S)[1] == ':')
#ifdef GIT_WIN32
static bool looks_like_network_computer_name(const char *path, int pos)
{
if (pos < 3)
return false;
if (path[0] != '/' || path[1] != '/')
return false;
while (pos-- > 2) {
if (path[pos] == '/')
return false;
}
return true;
}
#endif
/*
* Based on the Android implementation, BSD licensed.
* http://android.git.kernel.org/
*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
int git_path_basename_r(git_buf *buffer, const char *path)
{
const char *endp, *startp;
int len, result;
/* Empty or NULL string gets treated as "." */
if (path == NULL || *path == '\0') {
startp = ".";
len = 1;
goto Exit;
}
/* Strip trailing slashes */
endp = path + strlen(path) - 1;
while (endp > path && *endp == '/')
endp--;
/* All slashes becomes "/" */
if (endp == path && *endp == '/') {
startp = "/";
len = 1;
goto Exit;
}
/* Find the start of the base */
startp = endp;
while (startp > path && *(startp - 1) != '/')
startp--;
/* Cast is safe because max path < max int */
len = (int)(endp - startp + 1);
Exit:
result = len;
if (buffer != NULL && git_buf_set(buffer, startp, len) < 0)
return -1;
return result;
}
/*
* Based on the Android implementation, BSD licensed.
* Check http://android.git.kernel.org/
*/
int git_path_dirname_r(git_buf *buffer, const char *path)
{
const char *endp;
int result, len;
/* Empty or NULL string gets treated as "." */
if (path == NULL || *path == '\0') {
path = ".";
len = 1;
goto Exit;
}
/* Strip trailing slashes */
endp = path + strlen(path) - 1;
while (endp > path && *endp == '/')
endp--;
/* Find the start of the dir */
while (endp > path && *endp != '/')
endp--;
/* Either the dir is "/" or there are no slashes */
if (endp == path) {
path = (*endp == '/') ? "/" : ".";
len = 1;
goto Exit;
}
do {
endp--;
} while (endp > path && *endp == '/');
/* Cast is safe because max path < max int */
len = (int)(endp - path + 1);
#ifdef GIT_WIN32
/* Mimic unix behavior where '/.git' returns '/': 'C:/.git' will return
'C:/' here */
if (len == 2 && LOOKS_LIKE_DRIVE_PREFIX(path)) {
len = 3;
goto Exit;
}
/* Similarly checks if we're dealing with a network computer name
'//computername/.git' will return '//computername/' */
if (looks_like_network_computer_name(path, len)) {
len++;
goto Exit;
}
#endif
Exit:
result = len;
if (buffer != NULL && git_buf_set(buffer, path, len) < 0)
return -1;
return result;
}
char *git_path_dirname(const char *path)
{
git_buf buf = GIT_BUF_INIT;
char *dirname;
git_path_dirname_r(&buf, path);
dirname = git_buf_detach(&buf);
git_buf_free(&buf); /* avoid memleak if error occurs */
return dirname;
}
char *git_path_basename(const char *path)
{
git_buf buf = GIT_BUF_INIT;
char *basename;
git_path_basename_r(&buf, path);
basename = git_buf_detach(&buf);
git_buf_free(&buf); /* avoid memleak if error occurs */
return basename;
}
size_t git_path_basename_offset(git_buf *buffer)
{
ssize_t slash;
if (!buffer || buffer->size <= 0)
return 0;
slash = git_buf_rfind_next(buffer, '/');
if (slash >= 0 && buffer->ptr[slash] == '/')
return (size_t)(slash + 1);
return 0;
}
const char *git_path_topdir(const char *path)
{
size_t len;
ssize_t i;
assert(path);
len = strlen(path);
if (!len || path[len - 1] != '/')
return NULL;
for (i = (ssize_t)len - 2; i >= 0; --i)
if (path[i] == '/')
break;
return &path[i + 1];
}
int git_path_root(const char *path)
{
int offset = 0;
/* Does the root of the path look like a windows drive ? */
if (LOOKS_LIKE_DRIVE_PREFIX(path))
offset += 2;
#ifdef GIT_WIN32
/* Are we dealing with a windows network path? */
else if ((path[0] == '/' && path[1] == '/' && path[2] != '/') ||
(path[0] == '\\' && path[1] == '\\' && path[2] != '\\'))
{
offset += 2;
/* Skip the computer name segment */
while (path[offset] && path[offset] != '/' && path[offset] != '\\')
offset++;
}
#endif
if (path[offset] == '/' || path[offset] == '\\')
return offset;
return -1; /* Not a real error - signals that path is not rooted */
}
int git_path_join_unrooted(
git_buf *path_out, const char *path, const char *base, ssize_t *root_at)
{
int error, root;
assert(path && path_out);
root = git_path_root(path);
if (base != NULL && root < 0) {
error = git_buf_joinpath(path_out, base, path);
if (root_at)
*root_at = (ssize_t)strlen(base);
}
else {
error = git_buf_sets(path_out, path);
if (root_at)
*root_at = (root < 0) ? 0 : (ssize_t)root;
}
return error;
}
int git_path_prettify(git_buf *path_out, const char *path, const char *base)
{
char buf[GIT_PATH_MAX];
assert(path && path_out);
/* construct path if needed */
if (base != NULL && git_path_root(path) < 0) {
if (git_buf_joinpath(path_out, base, path) < 0)
return -1;
path = path_out->ptr;
}
if (p_realpath(path, buf) == NULL) {
/* giterr_set resets the errno when dealing with a GITERR_OS kind of error */
int error = (errno == ENOENT || errno == ENOTDIR) ? GIT_ENOTFOUND : -1;
giterr_set(GITERR_OS, "Failed to resolve path '%s'", path);
git_buf_clear(path_out);
return error;
}
return git_buf_sets(path_out, buf);
}
int git_path_prettify_dir(git_buf *path_out, const char *path, const char *base)
{
int error = git_path_prettify(path_out, path, base);
return (error < 0) ? error : git_path_to_dir(path_out);
}
int git_path_to_dir(git_buf *path)
{
if (path->asize > 0 &&
git_buf_len(path) > 0 &&
path->ptr[git_buf_len(path) - 1] != '/')
git_buf_putc(path, '/');
return git_buf_oom(path) ? -1 : 0;
}
void git_path_string_to_dir(char* path, size_t size)
{
size_t end = strlen(path);
if (end && path[end - 1] != '/' && end < size) {
path[end] = '/';
path[end + 1] = '\0';
}
}
int git__percent_decode(git_buf *decoded_out, const char *input)
{
int len, hi, lo, i;
assert(decoded_out && input);
len = (int)strlen(input);
git_buf_clear(decoded_out);
for(i = 0; i < len; i++)
{
char c = input[i];
if (c != '%')
goto append;
if (i >= len - 2)
goto append;
hi = git__fromhex(input[i + 1]);
lo = git__fromhex(input[i + 2]);
if (hi < 0 || lo < 0)
goto append;
c = (char)(hi << 4 | lo);
i += 2;
append:
if (git_buf_putc(decoded_out, c) < 0)
return -1;
}
return 0;
}
static int error_invalid_local_file_uri(const char *uri)
{
giterr_set(GITERR_CONFIG, "'%s' is not a valid local file URI", uri);
return -1;
}
static int local_file_url_prefixlen(const char *file_url)
{
int len = -1;
if (git__prefixcmp(file_url, "file://") == 0) {
if (file_url[7] == '/')
len = 8;
else if (git__prefixcmp(file_url + 7, "localhost/") == 0)
len = 17;
}
return len;
}
bool git_path_is_local_file_url(const char *file_url)
{
return (local_file_url_prefixlen(file_url) > 0);
}
int git_path_fromurl(git_buf *local_path_out, const char *file_url)
{
int offset;
assert(local_path_out && file_url);
if ((offset = local_file_url_prefixlen(file_url)) < 0 ||
file_url[offset] == '\0' || file_url[offset] == '/')
return error_invalid_local_file_uri(file_url);
#ifndef GIT_WIN32
offset--; /* A *nix absolute path starts with a forward slash */
#endif
git_buf_clear(local_path_out);
return git__percent_decode(local_path_out, file_url + offset);
}
int git_path_walk_up(
git_buf *path,
const char *ceiling,
int (*cb)(void *data, const char *),
void *data)
{
int error = 0;
git_buf iter;
ssize_t stop = 0, scan;
char oldc = '\0';
assert(path && cb);
if (ceiling != NULL) {
if (git__prefixcmp(path->ptr, ceiling) == 0)
stop = (ssize_t)strlen(ceiling);
else
stop = git_buf_len(path);
}
scan = git_buf_len(path);
/* empty path: yield only once */
if (!scan) {
error = cb(data, "");
if (error)
giterr_set_after_callback(error);
return error;
}
iter.ptr = path->ptr;
iter.size = git_buf_len(path);
iter.asize = path->asize;
while (scan >= stop) {
error = cb(data, iter.ptr);
iter.ptr[scan] = oldc;
if (error) {
giterr_set_after_callback(error);
break;
}
scan = git_buf_rfind_next(&iter, '/');
if (scan >= 0) {
scan++;
oldc = iter.ptr[scan];
iter.size = scan;
iter.ptr[scan] = '\0';
}
}
if (scan >= 0)
iter.ptr[scan] = oldc;
/* relative path: yield for the last component */
if (!error && stop == 0 && iter.ptr[0] != '/') {
error = cb(data, "");
if (error)
giterr_set_after_callback(error);
}
return error;
}
bool git_path_exists(const char *path)
{
assert(path);
return p_access(path, F_OK) == 0;
}
bool git_path_isdir(const char *path)
{
struct stat st;
if (p_stat(path, &st) < 0)
return false;
return S_ISDIR(st.st_mode) != 0;
}
bool git_path_isfile(const char *path)
{
struct stat st;
assert(path);
if (p_stat(path, &st) < 0)
return false;
return S_ISREG(st.st_mode) != 0;
}
#ifdef GIT_WIN32
bool git_path_is_empty_dir(const char *path)
{
git_win32_path filter_w;
bool empty = false;
if (git_win32__findfirstfile_filter(filter_w, path)) {
WIN32_FIND_DATAW findData;
HANDLE hFind = FindFirstFileW(filter_w, &findData);
/* If the find handle was created successfully, then it's a directory */
if (hFind != INVALID_HANDLE_VALUE) {
empty = true;
do {
/* Allow the enumeration to return . and .. and still be considered
* empty. In the special case of drive roots (i.e. C:\) where . and
* .. do not occur, we can still consider the path to be an empty
* directory if there's nothing there. */
if (!git_path_is_dot_or_dotdotW(findData.cFileName)) {
empty = false;
break;
}
} while (FindNextFileW(hFind, &findData));
FindClose(hFind);
}
}
return empty;
}
#else
static int path_found_entry(void *payload, git_buf *path)
{
GIT_UNUSED(payload);
return !git_path_is_dot_or_dotdot(path->ptr);
}
bool git_path_is_empty_dir(const char *path)
{
int error;
git_buf dir = GIT_BUF_INIT;
if (!git_path_isdir(path))
return false;
if ((error = git_buf_sets(&dir, path)) != 0)
giterr_clear();
else
error = git_path_direach(&dir, 0, path_found_entry, NULL);
git_buf_free(&dir);
return !error;
}
#endif
int git_path_set_error(int errno_value, const char *path, const char *action)
{
switch (errno_value) {
case ENOENT:
case ENOTDIR:
giterr_set(GITERR_OS, "Could not find '%s' to %s", path, action);
return GIT_ENOTFOUND;
case EINVAL:
case ENAMETOOLONG:
giterr_set(GITERR_OS, "Invalid path for filesystem '%s'", path);
return GIT_EINVALIDSPEC;
case EEXIST:
giterr_set(GITERR_OS, "Failed %s - '%s' already exists", action, path);
return GIT_EEXISTS;
default:
giterr_set(GITERR_OS, "Could not %s '%s'", action, path);
return -1;
}
}
int git_path_lstat(const char *path, struct stat *st)
{
if (p_lstat(path, st) == 0)
return 0;
return git_path_set_error(errno, path, "stat");
}
static bool _check_dir_contents(
git_buf *dir,
const char *sub,
bool (*predicate)(const char *))
{
bool result;
size_t dir_size = git_buf_len(dir);
size_t sub_size = strlen(sub);
/* leave base valid even if we could not make space for subdir */
if (git_buf_try_grow(dir, dir_size + sub_size + 2, false, false) < 0)
return false;
/* save excursion */
git_buf_joinpath(dir, dir->ptr, sub);
result = predicate(dir->ptr);
/* restore path */
git_buf_truncate(dir, dir_size);
return result;
}
bool git_path_contains(git_buf *dir, const char *item)
{
return _check_dir_contents(dir, item, &git_path_exists);
}
bool git_path_contains_dir(git_buf *base, const char *subdir)
{
return _check_dir_contents(base, subdir, &git_path_isdir);
}
bool git_path_contains_file(git_buf *base, const char *file)
{
return _check_dir_contents(base, file, &git_path_isfile);
}
int git_path_find_dir(git_buf *dir, const char *path, const char *base)
{
int error = git_path_join_unrooted(dir, path, base, NULL);
if (!error) {
char buf[GIT_PATH_MAX];
if (p_realpath(dir->ptr, buf) != NULL)
error = git_buf_sets(dir, buf);
}
/* call dirname if this is not a directory */
if (!error) /* && git_path_isdir(dir->ptr) == false) */
error = (git_path_dirname_r(dir, dir->ptr) < 0) ? -1 : 0;
if (!error)
error = git_path_to_dir(dir);
return error;
}
int git_path_resolve_relative(git_buf *path, size_t ceiling)
{
char *base, *to, *from, *next;
size_t len;
if (!path || git_buf_oom(path))
return -1;
if (ceiling > path->size)
ceiling = path->size;
/* recognize drive prefixes, etc. that should not be backed over */
if (ceiling == 0)
ceiling = git_path_root(path->ptr) + 1;
/* recognize URL prefixes that should not be backed over */
if (ceiling == 0) {
for (next = path->ptr; *next && git__isalpha(*next); ++next);
if (next[0] == ':' && next[1] == '/' && next[2] == '/')
ceiling = (next + 3) - path->ptr;
}
base = to = from = path->ptr + ceiling;
while (*from) {
for (next = from; *next && *next != '/'; ++next);
len = next - from;
if (len == 1 && from[0] == '.')
/* do nothing with singleton dot */;
else if (len == 2 && from[0] == '.' && from[1] == '.') {
/* error out if trying to up one from a hard base */
if (to == base && ceiling != 0) {
giterr_set(GITERR_INVALID,
"Cannot strip root component off url");
return -1;
}
/* no more path segments to strip,
* use '../' as a new base path */
if (to == base) {
if (*next == '/')
len++;
if (to != from)
memmove(to, from, len);
to += len;
/* this is now the base, can't back up from a
* relative prefix */
base = to;
} else {
/* back up a path segment */
while (to > base && to[-1] == '/') to--;
while (to > base && to[-1] != '/') to--;
}
} else {
if (*next == '/' && *from != '/')
len++;
if (to != from)
memmove(to, from, len);
to += len;
}
from += len;
while (*from == '/') from++;
}
*to = '\0';
path->size = to - path->ptr;
return 0;
}
int git_path_apply_relative(git_buf *target, const char *relpath)
{
git_buf_joinpath(target, git_buf_cstr(target), relpath);
return git_path_resolve_relative(target, 0);
}
int git_path_cmp(
const char *name1, size_t len1, int isdir1,
const char *name2, size_t len2, int isdir2,
int (*compare)(const char *, const char *, size_t))
{
unsigned char c1, c2;
size_t len = len1 < len2 ? len1 : len2;
int cmp;
cmp = compare(name1, name2, len);
if (cmp)
return cmp;
c1 = name1[len];
c2 = name2[len];
if (c1 == '\0' && isdir1)
c1 = '/';
if (c2 == '\0' && isdir2)
c2 = '/';
return (c1 < c2) ? -1 : (c1 > c2) ? 1 : 0;
}
int git_path_make_relative(git_buf *path, const char *parent)
{
const char *p, *q, *p_dirsep, *q_dirsep;
size_t plen = path->size, newlen, depth = 1, i, offset;
for (p_dirsep = p = path->ptr, q_dirsep = q = parent; *p && *q; p++, q++) {
if (*p == '/' && *q == '/') {
p_dirsep = p;
q_dirsep = q;
}
else if (*p != *q)
break;
}
/* need at least 1 common path segment */
if ((p_dirsep == path->ptr || q_dirsep == parent) &&
(*p_dirsep != '/' || *q_dirsep != '/')) {
giterr_set(GITERR_INVALID,
"%s is not a parent of %s", parent, path->ptr);
return GIT_ENOTFOUND;
}
if (*p == '/' && !*q)
p++;
else if (!*p && *q == '/')
q++;
else if (!*p && !*q)
return git_buf_clear(path), 0;
else {
p = p_dirsep + 1;
q = q_dirsep + 1;
}
plen -= (p - path->ptr);
if (!*q)
return git_buf_set(path, p, plen);
for (; (q = strchr(q, '/')) && *(q + 1); q++)
depth++;
newlen = (depth * 3) + plen;
/* save the offset as we might realllocate the pointer */
offset = p - path->ptr;
if (git_buf_try_grow(path, newlen + 1, 1, 0) < 0)
return -1;
p = path->ptr + offset;
memmove(path->ptr + (depth * 3), p, plen + 1);
for (i = 0; i < depth; i++)
memcpy(path->ptr + (i * 3), "../", 3);
path->size = newlen;
return 0;
}
bool git_path_has_non_ascii(const char *path, size_t pathlen)
{
const uint8_t *scan = (const uint8_t *)path, *end;
for (end = scan + pathlen; scan < end; ++scan)
if (*scan & 0x80)
return true;
return false;
}
#ifdef GIT_USE_ICONV
int git_path_iconv_init_precompose(git_path_iconv_t *ic)
{
git_buf_init(&ic->buf, 0);
ic->map = iconv_open(GIT_PATH_REPO_ENCODING, GIT_PATH_NATIVE_ENCODING);
return 0;
}
void git_path_iconv_clear(git_path_iconv_t *ic)
{
if (ic) {
if (ic->map != (iconv_t)-1)
iconv_close(ic->map);
git_buf_free(&ic->buf);
}
}
int git_path_iconv(git_path_iconv_t *ic, char **in, size_t *inlen)
{
char *nfd = *in, *nfc;
size_t nfdlen = *inlen, nfclen, wantlen = nfdlen, rv;
int retry = 1;
if (!ic || ic->map == (iconv_t)-1 ||
!git_path_has_non_ascii(*in, *inlen))
return 0;
git_buf_clear(&ic->buf);
while (1) {
if (git_buf_grow(&ic->buf, wantlen + 1) < 0)
return -1;
nfc = ic->buf.ptr + ic->buf.size;
nfclen = ic->buf.asize - ic->buf.size;
rv = iconv(ic->map, &nfd, &nfdlen, &nfc, &nfclen);
ic->buf.size = (nfc - ic->buf.ptr);
if (rv != (size_t)-1)
break;
/* if we cannot convert the data (probably because iconv thinks
* it is not valid UTF-8 source data), then use original data
*/
if (errno != E2BIG)
return 0;
/* make space for 2x the remaining data to be converted
* (with per retry overhead to avoid infinite loops)
*/
wantlen = ic->buf.size + max(nfclen, nfdlen) * 2 + (size_t)(retry * 4);
if (retry++ > 4)
goto fail;
}
ic->buf.ptr[ic->buf.size] = '\0';
*in = ic->buf.ptr;
*inlen = ic->buf.size;
return 0;
fail:
giterr_set(GITERR_OS, "Unable to convert unicode path data");
return -1;
}
static const char *nfc_file = "\xC3\x85\x73\x74\x72\xC3\xB6\x6D.XXXXXX";
static const char *nfd_file = "\x41\xCC\x8A\x73\x74\x72\x6F\xCC\x88\x6D.XXXXXX";
/* Check if the platform is decomposing unicode data for us. We will
* emulate core Git and prefer to use precomposed unicode data internally
* on these platforms, composing the decomposed unicode on the fly.
*
* This mainly happens on the Mac where HDFS stores filenames as
* decomposed unicode. Even on VFAT and SAMBA file systems, the Mac will
* return decomposed unicode from readdir() even when the actual
* filesystem is storing precomposed unicode.
*/
bool git_path_does_fs_decompose_unicode(const char *root)
{
git_buf path = GIT_BUF_INIT;
int fd;
bool found_decomposed = false;
char tmp[6];
/* Create a file using a precomposed path and then try to find it
* using the decomposed name. If the lookup fails, then we will mark
* that we should precompose unicode for this repository.
*/
if (git_buf_joinpath(&path, root, nfc_file) < 0 ||
(fd = p_mkstemp(path.ptr)) < 0)
goto done;
p_close(fd);
/* record trailing digits generated by mkstemp */
memcpy(tmp, path.ptr + path.size - sizeof(tmp), sizeof(tmp));
/* try to look up as NFD path */
if (git_buf_joinpath(&path, root, nfd_file) < 0)
goto done;
memcpy(path.ptr + path.size - sizeof(tmp), tmp, sizeof(tmp));
found_decomposed = git_path_exists(path.ptr);
/* remove temporary file (using original precomposed path) */
if (git_buf_joinpath(&path, root, nfc_file) < 0)
goto done;
memcpy(path.ptr + path.size - sizeof(tmp), tmp, sizeof(tmp));
(void)p_unlink(path.ptr);
done:
git_buf_free(&path);
return found_decomposed;
}
#else
bool git_path_does_fs_decompose_unicode(const char *root)
{
GIT_UNUSED(root);
return false;
}
#endif
#if defined(__sun) || defined(__GNU__)
typedef char path_dirent_data[sizeof(struct dirent) + FILENAME_MAX + 1];
#else
typedef struct dirent path_dirent_data;
#endif
int git_path_direach(
git_buf *path,
uint32_t flags,
int (*fn)(void *, git_buf *),
void *arg)
{
int error = 0;
ssize_t wd_len;
DIR *dir;
path_dirent_data de_data;
struct dirent *de, *de_buf = (struct dirent *)&de_data;
GIT_UNUSED(flags);
#ifdef GIT_USE_ICONV
git_path_iconv_t ic = GIT_PATH_ICONV_INIT;
#endif
if (git_path_to_dir(path) < 0)
return -1;
wd_len = git_buf_len(path);
if ((dir = opendir(path->ptr)) == NULL) {
giterr_set(GITERR_OS, "Failed to open directory '%s'", path->ptr);
if (errno == ENOENT)
return GIT_ENOTFOUND;
return -1;
}
#ifdef GIT_USE_ICONV
if ((flags & GIT_PATH_DIR_PRECOMPOSE_UNICODE) != 0)
(void)git_path_iconv_init_precompose(&ic);
#endif
while (p_readdir_r(dir, de_buf, &de) == 0 && de != NULL) {
char *de_path = de->d_name;
size_t de_len = strlen(de_path);
if (git_path_is_dot_or_dotdot(de_path))
continue;
#ifdef GIT_USE_ICONV
if ((error = git_path_iconv(&ic, &de_path, &de_len)) < 0)
break;
#endif
if ((error = git_buf_put(path, de_path, de_len)) < 0)
break;
error = fn(arg, path);
git_buf_truncate(path, wd_len); /* restore path */
if (error != 0) {
giterr_set_after_callback(error);
break;
}
}
closedir(dir);
#ifdef GIT_USE_ICONV
git_path_iconv_clear(&ic);
#endif
return error;
}
int git_path_dirload(
const char *path,
size_t prefix_len,
size_t alloc_extra,
unsigned int flags,
git_vector *contents)
{
int error, need_slash;
DIR *dir;
size_t path_len;
path_dirent_data de_data;
struct dirent *de, *de_buf = (struct dirent *)&de_data;
GIT_UNUSED(flags);
#ifdef GIT_USE_ICONV
git_path_iconv_t ic = GIT_PATH_ICONV_INIT;
#endif
assert(path && contents);
path_len = strlen(path);
if (!path_len || path_len < prefix_len) {
giterr_set(GITERR_INVALID, "Invalid directory path '%s'", path);
return -1;
}
if ((dir = opendir(path)) == NULL) {
giterr_set(GITERR_OS, "Failed to open directory '%s'", path);
return -1;
}
#ifdef GIT_USE_ICONV
if ((flags & GIT_PATH_DIR_PRECOMPOSE_UNICODE) != 0)
(void)git_path_iconv_init_precompose(&ic);
#endif
path += prefix_len;
path_len -= prefix_len;
need_slash = (path_len > 0 && path[path_len-1] != '/') ? 1 : 0;
while ((error = p_readdir_r(dir, de_buf, &de)) == 0 && de != NULL) {
char *entry_path, *de_path = de->d_name;
size_t alloc_size, de_len = strlen(de_path);
if (git_path_is_dot_or_dotdot(de_path))
continue;
#ifdef GIT_USE_ICONV
if ((error = git_path_iconv(&ic, &de_path, &de_len)) < 0)
break;
#endif
alloc_size = path_len + need_slash + de_len + 1 + alloc_extra;
if ((entry_path = git__calloc(alloc_size, 1)) == NULL) {
error = -1;
break;
}
if (path_len)
memcpy(entry_path, path, path_len);
if (need_slash)
entry_path[path_len] = '/';
memcpy(&entry_path[path_len + need_slash], de_path, de_len);
if ((error = git_vector_insert(contents, entry_path)) < 0) {
git__free(entry_path);
break;
}
}
closedir(dir);
#ifdef GIT_USE_ICONV
git_path_iconv_clear(&ic);
#endif
if (error != 0)
giterr_set(GITERR_OS, "Failed to process directory entry in '%s'", path);
return error;
}
int git_path_with_stat_cmp(const void *a, const void *b)
{
const git_path_with_stat *psa = a, *psb = b;
return strcmp(psa->path, psb->path);
}
int git_path_with_stat_cmp_icase(const void *a, const void *b)
{
const git_path_with_stat *psa = a, *psb = b;
return strcasecmp(psa->path, psb->path);
}
int git_path_dirload_with_stat(
const char *path,
size_t prefix_len,
unsigned int flags,
const char *start_stat,
const char *end_stat,
git_vector *contents)
{
int error;
unsigned int i;
git_path_with_stat *ps;
git_buf full = GIT_BUF_INIT;
int (*strncomp)(const char *a, const char *b, size_t sz);
size_t start_len = start_stat ? strlen(start_stat) : 0;
size_t end_len = end_stat ? strlen(end_stat) : 0, cmp_len;
if (git_buf_set(&full, path, prefix_len) < 0)
return -1;
error = git_path_dirload(
path, prefix_len, sizeof(git_path_with_stat) + 1, flags, contents);
if (error < 0) {
git_buf_free(&full);
return error;
}
strncomp = (flags & GIT_PATH_DIR_IGNORE_CASE) != 0 ?
git__strncasecmp : git__strncmp;
/* stat struct at start of git_path_with_stat, so shift path text */
git_vector_foreach(contents, i, ps) {
size_t path_len = strlen((char *)ps);
memmove(ps->path, ps, path_len + 1);
ps->path_len = path_len;
}
git_vector_foreach(contents, i, ps) {
/* skip if before start_stat or after end_stat */
cmp_len = min(start_len, ps->path_len);
if (cmp_len && strncomp(ps->path, start_stat, cmp_len) < 0)
continue;
cmp_len = min(end_len, ps->path_len);
if (cmp_len && strncomp(ps->path, end_stat, cmp_len) > 0)
continue;
git_buf_truncate(&full, prefix_len);
if ((error = git_buf_joinpath(&full, full.ptr, ps->path)) < 0 ||
(error = git_path_lstat(full.ptr, &ps->st)) < 0) {
if (error == GIT_ENOTFOUND) {
/* file was removed between readdir and lstat */
git_vector_remove(contents, i--);
} else {
/* Treat the file as unreadable if we get any other error */
memset(&ps->st, 0, sizeof(ps->st));
ps->st.st_mode = GIT_FILEMODE_UNREADABLE;
}
giterr_clear();
error = 0;
continue;
}
if (S_ISDIR(ps->st.st_mode)) {
ps->path[ps->path_len++] = '/';
ps->path[ps->path_len] = '\0';
}
else if (!S_ISREG(ps->st.st_mode) && !S_ISLNK(ps->st.st_mode)) {
/* skip everything but dirs, plain files, and symlinks */
git_vector_remove(contents, i--);
}
}
/* sort now that directory suffix is added */
git_vector_sort(contents);
git_buf_free(&full);
return error;
}
int git_path_from_url_or_path(git_buf *local_path_out, const char *url_or_path)
{
if (git_path_is_local_file_url(url_or_path))
return git_path_fromurl(local_path_out, url_or_path);
else
return git_buf_sets(local_path_out, url_or_path);
}
