Add download option.

Unlike upload option, download pulls down whole tree. For this reason
--to is expected to be directory path.

ios-deploy.c

@@ -1017,7 +1017,7 @@ void read_dir(service_conn_t afcFd, afc_connection* afc_conn_p, const char* dir,
     
     afc_dictionary* afc_dict_p;
     char *key, *val;
-    int not_dir;
+    int not_dir = 0;
 
     AFCFileInfoOpen(afc_conn_p, dir, &afc_dict_p);
     while((AFCKeyValueRead(afc_dict_p,&key,&val) == 0) && key && val) {
@@ -1141,6 +1141,97 @@ void list_files(AMDeviceRef device)
     }
 }
 
+void copy_file_callback(afc_connection* afc_conn_p, const char *name,int file)
+{
+    const char *local_name=name;
+
+    if (*local_name=='/') local_name++;
+
+    if (*local_name=='\0') return;
+
+    if (file) {
+	afc_file_ref fref;
+	int err = AFCFileRefOpen(afc_conn_p,name,1,&fref);
+
+	if (err) {
+	    fprintf(stderr,"AFCFileRefOpen(\"%s\") failed: %d\n",name,err);
+	    return;
+	}
+
+	FILE *fp = fopen(local_name,"w");
+
+	if (fp==NULL) {
+	    fprintf(stderr,"fopen(\"%s\",\"w\") failer: %s\n",local_name,strerror(errno));
+	    AFCFileRefClose(afc_conn_p,fref);
+	    return;
+	}
+
+	char buf[4096];
+	size_t sz=sizeof(buf);
+
+	while (AFCFileRefRead(afc_conn_p,fref,buf,&sz)==0 && sz) {
+	    fwrite(buf,sz,1,fp);
+	    sz = sizeof(buf);
+	}
+
+	AFCFileRefClose(afc_conn_p,fref);
+	fclose(fp);
+    } else {
+	if (mkdir(local_name,0777) && errno!=EEXIST)
+	    fprintf(stderr,"mkdir(\"%s\") failed: %s\n",local_name,strerror(errno));
+    }
+}
+
+void mkdirhier(char *path)
+{
+    char *slash;
+    struct stat buf;
+
+    if (path[0]=='.' && path[1]=='/') path+=2;
+
+    if ((slash = strrchr(path,'/'))) {
+	*slash = '\0';
+	if (stat(path,&buf)==0) {
+	    *slash = '/';
+	    return;
+	}
+	mkdirhier(path);
+	mkdir (path,0777);
+	*slash = '/';
+    }
+
+    return;
+}
+
+void download_tree(AMDeviceRef device)
+{
+    service_conn_t houseFd = start_house_arrest_service(device);
+    afc_connection* afc_conn_p = NULL;
+    char *dirname = NULL;
+
+    if (AFCConnectionOpen(houseFd, 0, &afc_conn_p) == 0)  do {
+
+	if (target_filename) {
+	    dirname = strdup(target_filename);
+	    mkdirhier(dirname);
+	    if (mkdir(dirname,0777) && errno!=EEXIST) {
+		fprintf(stderr,"mkdir(\"%s\") failed: %s\n",dirname,strerror(errno));
+		break;
+	    }
+	    if (chdir(dirname)) {
+		fprintf(stderr,"chdir(\"%s\") failed: %s\n",dirname,strerror(errno));
+		break;
+	    }
+	}
+
+	read_dir(houseFd, afc_conn_p, "/", copy_file_callback);
+
+    } while(0);
+
+    if (dirname) free(dirname);
+    if (afc_conn_p) AFCConnectionClose(afc_conn_p);
+}
+
 void upload_file(AMDeviceRef device) {
     service_conn_t houseFd = start_house_arrest_service(device);
     
@@ -1226,6 +1317,8 @@ void handle_device(AMDeviceRef device) {
             list_files(device);
         } else if (strcmp("upload", command) == 0) {
             upload_file(device);
+        } else if (strcmp("download", command) == 0) {
+            download_tree(device);
         }
         exit(0);
     }
@@ -1379,7 +1472,8 @@ void usage(const char* app) {
         "  -1, --bundle_id <bundle id>  specify bundle id for list and upload\n"
         "  -l, --list                   list files\n"
         "  -o, --upload <file>          upload file\n"
-        "  -2, --to <target pathname>	use together with upload file. specify target for upload\n"
+        "  -w, --download               download app tree\n"
+        "  -2, --to <target pathname>   use together with up/download file/tree. specify target\n"
         "  -V, --version                print the executable version \n",
         app);
 }
@@ -1409,12 +1503,13 @@ int main(int argc, char *argv[]) {
         { "list", no_argument, NULL, 'l' },
         { "bundle_id", required_argument, NULL, '1'},
         { "upload", required_argument, NULL, 'o'},
+        { "download", no_argument, NULL, 'w'},
         { "to", required_argument, NULL, '2'},
         { NULL, 0, NULL, 0 },
     };
     char ch;
 
-    while ((ch = getopt_long(argc, argv, "VmcdvunlrILi:b:a:t:g:x:p:1:2:o:", longopts, NULL)) != -1)
+    while ((ch = getopt_long(argc, argv, "VmcdvunlrILiw:b:a:t:g:x:p:1:2:o:", longopts, NULL)) != -1)
     {
         switch (ch) {
         case 'm':
@@ -1479,6 +1574,10 @@ int main(int argc, char *argv[]) {
             command_only = true;
             command = "list";
             break;
+        case 'w':
+            command_only = true;
+            command = "download";
+            break;
         default:
             usage(argv[0]);
             return exitcode_error;