1 files changed, 315 insertions, 0 deletions
diff --git a/src/libopkg/.svn/text-base/file_util.c.svn-base b/src/libopkg/.svn/text-base/file_util.c.svn-base
new file mode 100644
index 0000000..897546e
--- /dev/null
+++ b/src/libopkg/.svn/text-base/file_util.c.svn-base
@@ -0,0 +1,315 @@
+/* file_util.c - convenience routines for common stat operations
+
+   Copyright (C) 2009 Ubiq Technologies <graham.gower@gmail.com>
+
+   Carl D. Worth
+   Copyright (C) 2001 University of Southern California
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+*/
+
+#include "config.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <unistd.h>
+
+#include "sprintf_alloc.h"
+#include "file_util.h"
+#include "md5.h"
+#include "libbb/libbb.h"
+
+#if defined HAVE_SHA256
+#include "sha256.h"
+#endif
+
+int
+file_exists(const char *file_name)
+{
+	struct stat st;
+
+	if (stat(file_name, &st) == -1)
+		return 0;
+
+	return 1;
+}
+
+int
+file_is_dir(const char *file_name)
+{
+	struct stat st;
+
+	if (stat(file_name, &st) == -1)
+		return 0;
+
+	return S_ISDIR(st.st_mode);
+}
+
+/* read a single line from a file, stopping at a newline or EOF.
+   If a newline is read, it will appear in the resulting string.
+   Return value is a malloc'ed char * which should be freed at
+   some point by the caller.
+
+   Return value is NULL if the file is at EOF when called.
+*/
+char *
+file_read_line_alloc(FILE *fp)
+{
+	char buf[BUFSIZ];
+	unsigned int buf_len;
+	char *line = NULL;
+	unsigned int line_size = 0;
+	int got_nl = 0;
+
+	buf[0] = '\0';
+
+	while (fgets(buf, BUFSIZ, fp)) {
+		buf_len = strlen(buf);
+		if (buf[buf_len - 1] == '\n') {
+			buf_len--;
+			buf[buf_len] = '\0';
+			got_nl = 1;
+		}
+		if (line) {
+			line_size += buf_len;
+			line = xrealloc(line, line_size+1);
+			strncat(line, buf, line_size);
+		} else {
+			line_size = buf_len + 1;
+			line = xstrdup(buf);
+		}
+		if (got_nl)
+			break;
+	}
+
+	return line;
+}
+
+int
+file_move(const char *src, const char *dest)
+{
+	int err;
+
+	err = rename(src, dest);
+	if (err == -1) {
+		if (errno == EXDEV) {
+			/* src & dest live on different file systems */
+			err = file_copy(src, dest);
+			if (err == 0)
+				unlink(src);
+		} else {
+			opkg_perror(ERROR, "Failed to rename %s to %s",
+				src, dest);
+		}
+	}
+
+	return err;
+}
+
+int
+file_copy(const char *src, const char *dest)
+{
+	int err;
+
+	err = copy_file(src, dest, FILEUTILS_FORCE | FILEUTILS_PRESERVE_STATUS);
+	if (err)
+		opkg_msg(ERROR, "Failed to copy file %s to %s.\n",
+				src, dest);
+
+	return err;
+}
+
+int
+file_mkdir_hier(const char *path, long mode)
+{
+	return make_directory(path, mode, FILEUTILS_RECUR);
+}
+
+char *file_md5sum_alloc(const char *file_name)
+{
+    static const int md5sum_bin_len = 16;
+    static const int md5sum_hex_len = 32;
+
+    static const unsigned char bin2hex[16] = {
+	'0', '1', '2', '3',
+	'4', '5', '6', '7',
+	'8', '9', 'a', 'b',
+	'c', 'd', 'e', 'f'
+    };
+
+    int i, err;
+    FILE *file;
+    char *md5sum_hex;
+    unsigned char md5sum_bin[md5sum_bin_len];
+
+    md5sum_hex = xcalloc(1, md5sum_hex_len + 1);
+
+    file = fopen(file_name, "r");
+    if (file == NULL) {
+	opkg_perror(ERROR, "Failed to open file %s", file_name);
+	free(md5sum_hex);
+	return NULL;
+    }
+
+    err = md5_stream(file, md5sum_bin);
+    if (err) {
+	opkg_msg(ERROR, "Could't compute md5sum for %s.\n", file_name);
+	fclose(file);
+	free(md5sum_hex);
+	return NULL;
+    }
+
+    fclose(file);
+
+    for (i=0; i < md5sum_bin_len; i++) {
+	md5sum_hex[i*2] = bin2hex[md5sum_bin[i] >> 4];
+	md5sum_hex[i*2+1] = bin2hex[md5sum_bin[i] & 0xf];
+    }
+
+    md5sum_hex[md5sum_hex_len] = '\0';
+
+    return md5sum_hex;
+}
+
+#ifdef HAVE_SHA256
+char *file_sha256sum_alloc(const char *file_name)
+{
+    static const int sha256sum_bin_len = 32;
+    static const int sha256sum_hex_len = 64;
+
+    static const unsigned char bin2hex[16] = {
+	'0', '1', '2', '3',
+	'4', '5', '6', '7',
+	'8', '9', 'a', 'b',
+	'c', 'd', 'e', 'f'
+    };
+
+    int i, err;
+    FILE *file;
+    char *sha256sum_hex;
+    unsigned char sha256sum_bin[sha256sum_bin_len];
+
+    sha256sum_hex = xcalloc(1, sha256sum_hex_len + 1);
+
+    file = fopen(file_name, "r");
+    if (file == NULL) {
+	opkg_perror(ERROR, "Failed to open file %s", file_name);
+	free(sha256sum_hex);
+	return NULL;
+    }
+
+    err = sha256_stream(file, sha256sum_bin);
+    if (err) {
+	opkg_msg(ERROR, "Could't compute sha256sum for %s.\n", file_name);
+	fclose(file);
+	free(sha256sum_hex);
+	return NULL;
+    }
+
+    fclose(file);
+
+    for (i=0; i < sha256sum_bin_len; i++) {
+	sha256sum_hex[i*2] = bin2hex[sha256sum_bin[i] >> 4];
+	sha256sum_hex[i*2+1] = bin2hex[sha256sum_bin[i] & 0xf];
+    }
+
+    sha256sum_hex[sha256sum_hex_len] = '\0';
+
+    return sha256sum_hex;
+}
+
+#endif
+
+
+int
+rm_r(const char *path)
+{
+	int ret = 0;
+	DIR *dir;
+	struct dirent *dent;
+
+	if (path == NULL) {
+		opkg_perror(ERROR, "Missing directory parameter");
+		return -1;
+	}
+
+	dir = opendir(path);
+	if (dir == NULL) {
+		opkg_perror(ERROR, "Failed to open dir %s", path);
+		return -1;
+	}
+
+	if (fchdir(dirfd(dir)) == -1) {
+		opkg_perror(ERROR, "Failed to change to dir %s", path);
+		closedir(dir);
+		return -1;
+	}
+
+	while (1) {
+		errno = 0;
+		if ((dent = readdir(dir)) == NULL) {
+			if (errno) {
+				opkg_perror(ERROR, "Failed to read dir %s",
+						path);
+				ret = -1;
+			}
+			break;
+		}
+
+		if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
+			continue;
+
+#ifdef _BSD_SOURCE
+		if (dent->d_type == DT_DIR) {
+			if ((ret = rm_r(dent->d_name)) == -1)
+				break;
+			continue;
+		} else if (dent->d_type == DT_UNKNOWN)
+#endif
+		{
+			struct stat st;
+			if ((ret = lstat(dent->d_name, &st)) == -1) {
+				opkg_perror(ERROR, "Failed to lstat %s",
+						dent->d_name);
+				break;
+			}
+			if (S_ISDIR(st.st_mode)) {
+				if ((ret = rm_r(dent->d_name)) == -1)
+					break;
+				continue;
+			}
+		}
+
+		if ((ret = unlink(dent->d_name)) == -1) {
+			opkg_perror(ERROR, "Failed to unlink %s", dent->d_name);
+			break;
+		}
+	}
+
+	if (chdir("..") == -1) {
+		ret = -1;
+		opkg_perror(ERROR, "Failed to change to dir %s/..", path);
+	}
+
+	if (rmdir(path) == -1 ) {
+		ret = -1;
+		opkg_perror(ERROR, "Failed to remove dir %s", path);
+	}
+
+	if (closedir(dir) == -1) {
+		ret = -1;
+		opkg_perror(ERROR, "Failed to close dir %s", path);
+	}
+
+	return ret;
+}