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1. dirname() loses path, 2. use realpath()

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Arun Prakash Jana 2020-02-08 18:51:56 +05:30
parent 72668069ed
commit ae486e36b8
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GPG key ID: A75979F35C080412
1 changed files with 17 additions and 57 deletions
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src/nnn.c
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@ -1028,55 +1028,6 @@ static char *xbasename(char *path)
return base ? base + 1 : path;
}
static char *xrealpath(const char *path, const char *cwd)
{
if (!path || !cwd)
return NULL;
size_t dst_size = 0, src_size = strlen(path), cwd_size = strlen(cwd);
const char *src, *next;
char *dst;
char *resolved_path = malloc(src_size + (*path == '/' ? 0 : cwd_size) + 1);
if (!resolved_path)
return NULL;
/* Turn relative paths into absolute */
if (path[0] != '/')
dst_size = xstrlcpy(resolved_path, cwd, cwd_size + 1) - 1;
else
resolved_path[0] = '\0';
src = path;
dst = resolved_path + dst_size;
for (next = NULL; next != path + src_size;) {
next = strchr(src, '/');
if (!next)
next = path + src_size;
if (next - src == 2 && src[0] == '.' && src[1] == '.') {
if (dst - resolved_path) {
dst = xmemrchr((uchar *)resolved_path, '/', dst-resolved_path);
*dst = '\0';
}
} else if (next - src == 1 && src[0] == '.') {
/* NOP */
} else if (next - src) {
*(dst++) = '/';
xstrlcpy(dst, src, next - src + 1);
dst += next - src;
}
src = next + 1;
}
if (*resolved_path == '\0') {
resolved_path[0] = '/';
resolved_path[1] = '\0';
}
return resolved_path;
}
static int create_tmp_file(void)
{
xstrlcpy(g_tmpfpath + g_tmpfplen - 1, messages[STR_TMPFILE], TMP_LEN_MAX - g_tmpfplen);
@ -6145,7 +6096,7 @@ static char *load_input()
ssize_t i, chunk_count = 1, chunk = 512 * 1024, entries = 0;
char *input = malloc(sizeof(char) * chunk), *tmpdir = NULL;
char cwd[PATH_MAX], *next, *tmp;
size_t offsets[LIST_FILES_MAX];
size_t offsets[LIST_FILES_MAX], len;
char **paths = NULL;
ssize_t input_read, total_read = 0, off = 0;
bool dotfirst = FALSE;
@ -6236,20 +6187,28 @@ static char *load_input()
if (paths[0][0] == '.' && paths[0][1] == '\0')
dotfirst = TRUE;
if (!(paths[0] = xrealpath(paths[0], cwd)))
if (!(paths[0] = realpath(paths[0], NULL)))
goto malloc_1; // free all entries
DPRINTF_S(paths[0]);
if (dotfirst)
if (dotfirst) {
xstrlcpy(g_prefixpath, paths[0], strlen(paths[0]) + 1);
else
xstrlcpy(g_prefixpath, dirname(paths[0]), strlen(dirname(paths[0])) + 1);
i = 1; /* start enumerating from first file */
} else {
xstrlcpy(g_buf, paths[0], PATH_MAX);
len = strlen(dirname(g_buf));
/* dirname() may modify the original path */
xstrlcpy(g_buf, paths[0], PATH_MAX);
xstrlcpy(g_prefixpath, dirname(g_buf), len + 1);
i = 0;
}
DPRINTF_S(g_prefixpath);
for (i = 1; i < entries; ++i) {
if (!(paths[i] = xrealpath(paths[i], cwd))) {
for (; i < entries; ++i) {
if (!(paths[i] = realpath(paths[i], NULL))) {
entries = i; // free from the previous entry
goto malloc_2;
@ -6257,7 +6216,8 @@ static char *load_input()
DPRINTF_S(paths[i]);
if (!common_prefix(paths[i], g_prefixpath)) {
xstrlcpy(g_buf, paths[i], PATH_MAX);
if (!common_prefix(dirname(g_buf), g_prefixpath)) {
entries = i + 1; // free from the current entry
goto malloc_2;
}