Initial commit

.gitignore

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+.DS_Store
+/imobax

Makefile

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+VERSION = 1.0.0
+TARGET  = imobax
+SRCDIR  = src
+FLAGS  ?= -Wall -O3 -DVERSION=$(VERSION) -DTIMESTAMP="`date +'%d. %B %Y %H:%M:%S'`" -flto -lsqlite3 $(CFLAGS)
+
+.PHONY: all clean
+
+all: $(TARGET)
+
+$(TARGET): $(SRCDIR)/*.c
+	$(CC) -o $@ $^ $(FLAGS)
+
+clean:
+	rm -f $(TARGET)

README.md

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+# imobax
+
+The **i**OS **Mo**bile **Ba**ckup **X**tractor.  
+It extracts backups... and stuff.
+
+Binary releases for macOS: [here](https://github.com/Siguza/imobax/releases).
+
+### Building
+
+As always:
+
+    make
+
+### Usage
+
+    Usage:
+        ./imobax [-f] [-i] [-l] source-dir [target-dir]
+
+    Options:
+        -f  Force overwriting of existing files
+        -i  Ignore missing files in backup
+        -l  List contents only, write nothing
+
+### License
+
+[MPL2](https://github.com/Siguza/imobax/blob/master/LICENSE) with Exhibit B.

src/common.c

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+/* Copyright (c) 2019 Siguza
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This Source Code Form is "Incompatible With Secondary Licenses", as
+ * defined by the Mozilla Public License, v. 2.0.
+**/
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdlib.h>             // free
+#include <string.h>             // strdup
+#include <unistd.h>             // faccessat, F_OK
+#include <sys/stat.h>           // mkdirat
+
+#include "common.h"
+
+int mkdirat_recursive(int fd, const char *path, bool only_parent)
+{
+    int retval = -1;
+    char *str = NULL;
+
+    if(path[0] == '\0')
+    {
+        LOG("mkdirat_recursive: bad argument");
+        goto out;
+    }
+
+    str = strdup(path);
+    if(!str)
+    {
+        ERRNO("strdup(%s)", path);
+        goto out;
+    }
+
+    for(size_t i = 1; 1; ++i)
+    {
+        bool doit = false,
+             flip = false,
+             end  = false;
+        if(str[i] == '/')
+        {
+            doit = true;
+            flip = true;
+        }
+        else if(str[i] == '\0')
+        {
+            if(!only_parent)
+            {
+                doit = true;
+            }
+            end = true;
+        }
+
+        if(doit)
+        {
+            if(flip)
+            {
+                str[i] = '\0';
+            }
+
+            if(faccessat(fd, str, F_OK, 0) != 0)
+            {
+                if(errno != ENOENT)
+                {
+                    ERRNO("access(%s)", str);
+                    break;
+                }
+                else
+                {
+                    if(mkdirat(fd, str, 0755) != 0)
+                    {
+                        ERRNO("mkdir(%s)", str);
+                        break;
+                    }
+                }
+            }
+
+            if(flip)
+            {
+                str[i] = '/';
+            }
+        }
+
+        if(end)
+        {
+            break;
+        }
+    }
+
+    retval = 0;
+out:;
+    if(str) free(str);
+    return retval;
+}

src/common.h

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+/* Copyright (c) 2019 Siguza
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This Source Code Form is "Incompatible With Secondary Licenses", as
+ * defined by the Mozilla Public License, v. 2.0.
+**/
+
+#ifndef COMMON_H
+#define COMMON_H
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>              // fprintf, stderr
+#include <string.h>             // strerror
+
+#define LOG(str, args...) do { fprintf(stderr, str "\n", ##args); } while(0)
+#define ERRNO(str, args...) LOG(str ": %s", ##args, strerror(errno))
+
+#define STRINGIFX(x) #x
+#define STRINGIFY(x) STRINGIFX(x)
+
+int mkdirat_recursive(int fd, const char *path, bool only_parent);
+
+#endif