Rename service implementation sources to lowercase for consistency

1 files changed, 1285 insertions, 0 deletions

diff --git a/src/afc.c b/src/afc.c
new file mode 100644
index 0000000..fc09287
--- /dev/null
+++ b/src/afc.c
@@ -0,0 +1,1285 @@
+/*
+ * afc.c 
+ * Contains functions for the built-in AFC client.
+ * 
+ * Copyright (c) 2008 Zach C. All Rights Reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ * 
+ * This library 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "afc.h"
+#include "iphone.h"
+#include "debug.h"
+
+// This is the maximum size an AFC data packet can be
+static const int MAXIMUM_PACKET_SIZE = (2 << 15);
+
+/** Locks an AFC client, done for thread safety stuff
+ * 
+ * @param client The AFC client connection to lock
+ */
+static void afc_lock(afc_client_t client)
+{
+	debug_info("Locked");
+	g_mutex_lock(client->mutex);
+}
+
+/** Unlocks an AFC client, done for thread safety stuff.
+ * 
+ * @param client The AFC 
+ */
+static void afc_unlock(afc_client_t client)
+{
+	debug_info("Unlocked");
+	g_mutex_unlock(client->mutex);
+}
+
+/** Makes a connection to the AFC service on the phone. 
+ * 
+ * @param device The device to connect to.
+ * @param port The destination port.
+ * @param client Pointer that will be set to a newly allocated afc_client_t
+ *     upon successful return.
+ * 
+ * @return AFC_E_SUCCESS on success, AFC_E_INVALID_ARGUMENT when device or port
+ *     is invalid, AFC_E_MUX_ERROR when the connection failed, or AFC_E_NO_MEM
+ *     when there's a memory allocation problem.
+ */
+afc_error_t afc_client_new(iphone_device_t device, uint16_t port, afc_client_t * client)
+{
+	/* makes sure thread environment is available */
+	if (!g_thread_supported())
+		g_thread_init(NULL);
+
+	if (!device || port==0)
+		return AFC_E_INVALID_ARGUMENT;
+
+	/* attempt connection */
+	iphone_connection_t connection = NULL;
+	if (iphone_device_connect(device, port, &connection) != IPHONE_E_SUCCESS) {
+		return AFC_E_MUX_ERROR;
+	}
+
+	afc_client_t client_loc = (afc_client_t) malloc(sizeof(struct afc_client_int));
+	client_loc->connection = connection;
+
+	/* allocate a packet */
+	client_loc->afc_packet = (AFCPacket *) malloc(sizeof(AFCPacket));
+	if (!client_loc->afc_packet) {
+		iphone_device_disconnect(client_loc->connection);
+		free(client_loc);
+		return AFC_E_NO_MEM;
+	}
+
+	client_loc->afc_packet->packet_num = 0;
+	client_loc->afc_packet->entire_length = 0;
+	client_loc->afc_packet->this_length = 0;
+	memcpy(client_loc->afc_packet->magic, AFC_MAGIC, AFC_MAGIC_LEN);
+	client_loc->file_handle = 0;
+	client_loc->lock = 0;
+	client_loc->mutex = g_mutex_new();
+
+	*client = client_loc;
+	return AFC_E_SUCCESS;
+}
+
+/** Disconnects an AFC client from the phone.
+ * 
+ * @param client The client to disconnect.
+ */
+afc_error_t afc_client_free(afc_client_t client)
+{
+	if (!client || !client->connection || !client->afc_packet)
+		return AFC_E_INVALID_ARGUMENT;
+
+	iphone_device_disconnect(client->connection);
+	free(client->afc_packet);
+	if (client->mutex) {
+		g_mutex_free(client->mutex);
+	}
+	free(client);
+	return AFC_E_SUCCESS;
+}
+
+/** Dispatches an AFC packet over a client.
+ * 
+ * @param client The client to send data through.
+ * @param data The data to send.
+ * @param length The length to send.
+ * @param bytes_sent The number of bytes actually sent.
+ *
+ * @return AFC_E_SUCCESS on success, or an AFC_E_* error value on error.
+ * 
+ * @warning set client->afc_packet->this_length and
+ *          client->afc_packet->entire_length to 0 before calling this.  The
+ *          reason is that if you set them to different values, it indicates
+ *          you want to send the data as two packets.
+ */
+static afc_error_t afc_dispatch_packet(afc_client_t client, const char *data, uint32_t length, uint32_t *bytes_sent)
+{
+	uint32_t offset = 0;
+	uint32_t sent = 0;
+
+	if (!client || !client->connection || !client->afc_packet)
+		return AFC_E_INVALID_ARGUMENT;
+
+	*bytes_sent = 0;
+
+	if (!data || !length)
+		length = 0;
+
+	client->afc_packet->packet_num++;
+	if (!client->afc_packet->entire_length) {
+		client->afc_packet->entire_length = (length) ? sizeof(AFCPacket) + length : sizeof(AFCPacket);
+		client->afc_packet->this_length = client->afc_packet->entire_length;
+	}
+	if (!client->afc_packet->this_length) {
+		client->afc_packet->this_length = sizeof(AFCPacket);
+	}
+	// We want to send two segments; buffer+sizeof(AFCPacket) to
+	// this_length is the parameters
+	// And everything beyond that is the next packet. (for writing)
+	if (client->afc_packet->this_length != client->afc_packet->entire_length) {
+		offset = client->afc_packet->this_length - sizeof(AFCPacket);
+
+		debug_info("Offset: %i", offset);
+		if ((length) < (client->afc_packet->entire_length - client->afc_packet->this_length)) {
+			debug_info("Length did not resemble what it was supposed to based on packet");
+			debug_info("length minus offset: %i", length - offset);
+			debug_info("rest of packet: %i\n", client->afc_packet->entire_length - client->afc_packet->this_length);
+			return AFC_E_INTERNAL_ERROR;
+		}
+
+		/* send AFC packet header */
+		AFCPacket_to_LE(client->afc_packet);
+		sent = 0;
+		iphone_device_send(client->connection, (void*)client->afc_packet, sizeof(AFCPacket), &sent);
+		if (sent == 0) {
+			/* FIXME: should this be handled as success?! */
+			return AFC_E_SUCCESS;
+		}
+		*bytes_sent += sent;
+
+		/* send AFC packet data */
+		sent = 0;
+		iphone_device_send(client->connection, data, offset, &sent);
+		if (sent == 0) {
+			return AFC_E_SUCCESS;
+		}
+		*bytes_sent += sent;
+
+		debug_info("sent the first now go with the second");
+		debug_info("Length: %i", length - offset);
+		debug_info("Buffer: ");
+		debug_buffer(data + offset, length - offset);
+
+		sent = 0;
+		iphone_device_send(client->connection, data + offset, length - offset, &sent);
+
+		*bytes_sent = sent;
+		return AFC_E_SUCCESS;
+	} else {
+		debug_info("doin things the old way");
+		debug_info("packet length = %i", client->afc_packet->this_length);
+
+		debug_buffer((char*)client->afc_packet, sizeof(AFCPacket));
+
+		/* send AFC packet header */
+		AFCPacket_to_LE(client->afc_packet);
+		sent = 0;
+		iphone_device_send(client->connection, (void*)client->afc_packet, sizeof(AFCPacket), &sent);
+		if (sent == 0) {
+			return AFC_E_SUCCESS;
+		}
+		*bytes_sent += sent;
+		/* send AFC packet data (if there's data to send) */
+		if (length > 0) {
+			debug_info("packet data follows");
+
+			debug_buffer(data, length);
+			iphone_device_send(client->connection, data, length, &sent);
+			*bytes_sent += sent;
+		}
+		return AFC_E_SUCCESS;
+	}
+	return AFC_E_INTERNAL_ERROR;
+}
+
+/** Receives data through an AFC client and sets a variable to the received data.
+ * 
+ * @param client The client to receive data on.
+ * @param dump_here The char* to point to the newly-received data.
+ * @param bytes_recv How much data was received.
+ * 
+ * @return AFC_E_SUCCESS when data has been received, or an AFC_E_* error value
+ *         when an error occured.
+ */
+static afc_error_t afc_receive_data(afc_client_t client, char **dump_here, uint32_t *bytes_recv)
+{
+	AFCPacket header;
+	uint32_t entire_len = 0;
+	uint32_t this_len = 0;
+	uint32_t current_count = 0;
+	uint64_t param1 = -1;
+
+	*bytes_recv = 0;
+
+	/* first, read the AFC header */
+	iphone_device_recv(client->connection, (char*)&header, sizeof(AFCPacket), bytes_recv);
+	AFCPacket_from_LE(&header);
+	if (*bytes_recv == 0) {
+		debug_info("Just didn't get enough.");
+		*dump_here = NULL;
+		return AFC_E_MUX_ERROR;
+	} else if (*bytes_recv < sizeof(AFCPacket)) {
+		debug_info("Did not even get the AFCPacket header");
+		*dump_here = NULL;
+		return AFC_E_MUX_ERROR;
+	}
+
+	/* check if it's a valid AFC header */
+	if (strncmp(header.magic, AFC_MAGIC, AFC_MAGIC_LEN)) {
+		debug_info("Invalid AFC packet received (magic != " AFC_MAGIC ")!");
+	}
+
+	/* check if it has the correct packet number */
+	if (header.packet_num != client->afc_packet->packet_num) {
+		/* otherwise print a warning but do not abort */
+		debug_info("ERROR: Unexpected packet number (%lld != %lld) aborting.", header.packet_num, client->afc_packet->packet_num);
+		*dump_here = NULL;
+		return AFC_E_OP_HEADER_INVALID;
+	}
+
+	/* then, read the attached packet */
+	if (header.this_length < sizeof(AFCPacket)) {
+		debug_info("Invalid AFCPacket header received!");
+		*dump_here = NULL;
+		return AFC_E_OP_HEADER_INVALID;
+	} else if ((header.this_length == header.entire_length)
+			&& header.entire_length == sizeof(AFCPacket)) {
+		debug_info("Empty AFCPacket received!");
+		*dump_here = NULL;
+		*bytes_recv = 0;
+		if (header.operation == AFC_OP_DATA) {
+			return AFC_E_SUCCESS;
+		} else {
+			return AFC_E_IO_ERROR;
+		}
+	}
+
+	debug_info("received AFC packet, full len=%lld, this len=%lld, operation=0x%llx", header.entire_length, header.this_length, header.operation);
+
+	entire_len = (uint32_t)header.entire_length - sizeof(AFCPacket);
+	this_len = (uint32_t)header.this_length - sizeof(AFCPacket);
+
+	/* this is here as a check (perhaps a different upper limit is good?) */
+	if (entire_len > (uint32_t)MAXIMUM_PACKET_SIZE) {
+		fprintf(stderr, "%s: entire_len is larger than MAXIMUM_PACKET_SIZE, (%d > %d)!", __func__, entire_len, MAXIMUM_PACKET_SIZE);
+	}
+
+	*dump_here = (char*)malloc(entire_len);
+	if (this_len > 0) {
+		iphone_device_recv(client->connection, *dump_here, this_len, bytes_recv);
+		if (*bytes_recv <= 0) {
+			free(*dump_here);
+			*dump_here = NULL;
+			debug_info("Did not get packet contents!");
+			return AFC_E_NOT_ENOUGH_DATA;
+		} else if (*bytes_recv < this_len) {
+			free(*dump_here);
+			*dump_here = NULL;
+			debug_info("Could not receive this_len=%d bytes", this_len);
+			return AFC_E_NOT_ENOUGH_DATA;
+		}
+	}
+
+	current_count = this_len;
+
+	if (entire_len > this_len) {
+		while (current_count < entire_len) {
+			iphone_device_recv(client->connection, (*dump_here)+current_count, entire_len - current_count, bytes_recv);
+			if (*bytes_recv <= 0) {
+				debug_info("Error receiving data (recv returned %d)", *bytes_recv);
+				break;
+			}
+			current_count += *bytes_recv;
+		}
+		if (current_count < entire_len) {
+			debug_info("WARNING: could not receive full packet (read %s, size %d)", current_count, entire_len);
+		}
+	}
+
+	if (current_count >= sizeof(uint64_t)) {
+		param1 = *(uint64_t*)(*dump_here);
+	}
+
+	debug_info("packet data size = %i", current_count);
+	debug_info("packet data follows");
+	debug_buffer(*dump_here, current_count);
+
+	/* check operation types */
+	if (header.operation == AFC_OP_STATUS) {
+		/* status response */
+		debug_info("got a status response, code=%lld", param1);
+
+		if (param1 != AFC_E_SUCCESS) {
+			/* error status */
+			/* free buffer */
+			free(*dump_here);
+			*dump_here = NULL;
+			return (afc_error_t)param1;
+		}
+	} else if (header.operation == AFC_OP_DATA) {
+		/* data response */
+		debug_info("got a data response");
+	} else if (header.operation == AFC_OP_FILE_OPEN_RES) {
+		/* file handle response */
+		debug_info("got a file handle response, handle=%lld", param1);
+	} else if (header.operation == AFC_OP_FILE_TELL_RES) {
+		/* tell response */
+		debug_info("got a tell response, position=%lld", param1);
+	} else {
+		/* unknown operation code received */
+		free(*dump_here);
+		*dump_here = NULL;
+		*bytes_recv = 0;
+
+		debug_info("WARNING: Unknown operation code received 0x%llx param1=%lld", header.operation, param1);
+		fprintf(stderr, "%s: WARNING: Unknown operation code received 0x%llx param1=%lld", __func__, (long long)header.operation, (long long)param1);
+
+		return AFC_E_OP_NOT_SUPPORTED;
+	}
+
+	*bytes_recv = current_count;
+	return AFC_E_SUCCESS;
+}
+
+static uint32_t count_nullspaces(char *string, uint32_t number)
+{
+	uint32_t i = 0, nulls = 0;
+
+	for (i = 0; i < number; i++) {
+		if (string[i] == '\0')
+			nulls++;
+	}
+
+	return nulls;
+}
+
+static char **make_strings_list(char *tokens, uint32_t true_length)
+{
+	uint32_t nulls = 0, i = 0, j = 0;
+	char **list = NULL;
+
+	if (!tokens || !true_length)
+		return NULL;
+
+	nulls = count_nullspaces(tokens, true_length);
+	list = (char **) malloc(sizeof(char *) * (nulls + 1));
+	for (i = 0; i < nulls; i++) {
+		list[i] = strdup(tokens + j);
+		j += strlen(list[i]) + 1;
+	}
+	list[i] = NULL;
+
+	return list;
+}
+
+/** Gets a directory listing of the directory requested.
+ * 
+ * @param client The client to get a directory listing from.
+ * @param dir The directory to list. (must be a fully-qualified path)
+ * 
+ * @return A char ** list of files in that directory, terminated by an empty
+ *         string for now or NULL if there was an error.
+ */
+afc_error_t afc_read_directory(afc_client_t client, const char *dir, char ***list)
+{
+	uint32_t bytes = 0;
+	char *data = NULL, **list_loc = NULL;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !dir || !list || (list && *list))
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send the command
+	client->afc_packet->operation = AFC_OP_READ_DIR;
+	client->afc_packet->entire_length = 0;
+	client->afc_packet->this_length = 0;
+	ret = afc_dispatch_packet(client, dir, strlen(dir)+1, &bytes);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive the data
+	ret = afc_receive_data(client, &data, &bytes);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return ret;
+	}
+	// Parse the data
+	list_loc = make_strings_list(data, bytes);
+	if (data)
+		free(data);
+
+	afc_unlock(client);
+	*list = list_loc;
+
+	return ret;
+}
+
+/** Get device info for a client connection to phone. (free space on disk, etc.)
+ * 
+ * @param client The client to get device info for.
+ * 
+ * @return A char ** list of parameters as given by AFC or NULL if there was an
+ *         error.
+ */
+afc_error_t afc_get_device_info(afc_client_t client, char ***infos)
+{
+	uint32_t bytes = 0;
+	char *data = NULL, **list = NULL;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !infos)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send the command
+	client->afc_packet->operation = AFC_OP_GET_DEVINFO;
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	ret = afc_dispatch_packet(client, NULL, 0, &bytes);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive the data
+	ret = afc_receive_data(client, &data, &bytes);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return ret;
+	}
+	// Parse the data
+	list = make_strings_list(data, bytes);
+	if (data)
+		free(data);
+
+	afc_unlock(client);
+
+	*infos = list;
+
+	return ret;
+}
+
+/** Get a specific key of the device info list for a client connection.
+ * Known key values are: Model, FSTotalBytes, FSFreeBytes and FSBlockSize.
+ * This is a helper function for afc_get_device_info().
+ *
+ * @param client The client to get device info for.
+ * @param key The key to get the value of.
+ * @param value The value for the key if successful or NULL otherwise.
+ *
+ * @return AFC_E_SUCCESS on success or an AFC_E_* error value.
+ */
+afc_error_t afc_get_device_info_key(afc_client_t client, const char *key, char **value)
+{
+	afc_error_t ret = AFC_E_INTERNAL_ERROR;
+	char **kvps, **ptr;
+
+	*value = NULL;
+	if (key == NULL)
+		return AFC_E_INVALID_ARGUMENT;
+
+	ret = afc_get_device_info(client, &kvps);
+	if (ret != AFC_E_SUCCESS)
+		return ret;
+
+	for (ptr = kvps; *ptr; ptr++) {
+		if (!strcmp(*ptr, key)) {
+			*value = strdup(*(ptr+1));
+			break;
+		}
+	}
+
+	g_strfreev(kvps);
+
+	return ret;
+}
+
+/** Deletes a file or directory.
+ * 
+ * @param client The client to use.
+ * @param path The path to delete. (must be a fully-qualified path)
+ * 
+ * @return AFC_E_SUCCESS if everythong went well, AFC_E_INVALID_ARGUMENT
+ *         if arguments are NULL or invalid, AFC_E_NOT_ENOUGH_DATA otherwise.
+ */
+afc_error_t afc_remove_path(afc_client_t client, const char *path)
+{
+	char *response = NULL;
+	uint32_t bytes = 0;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !path || !client->afc_packet || !client->connection)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	client->afc_packet->this_length = client->afc_packet->entire_length = 0;
+	client->afc_packet->operation = AFC_OP_REMOVE_PATH;
+	ret = afc_dispatch_packet(client, path, strlen(path)+1, &bytes);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &response, &bytes);
+	if (response)
+		free(response);
+
+	/* special case; unknown error actually means directory not empty */
+	if (ret == AFC_E_UNKNOWN_ERROR)
+		ret = AFC_E_DIR_NOT_EMPTY;
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Renames a file or directory on the phone.
+ * 
+ * @param client The client to have rename.
+ * @param from The name to rename from. (must be a fully-qualified path)
+ * @param to The new name. (must also be a fully-qualified path)
+ * 
+ * @return AFC_E_SUCCESS if everythong went well, AFC_E_INVALID_ARGUMENT
+ *         if arguments are NULL or invalid, AFC_E_NOT_ENOUGH_DATA otherwise.
+ */
+afc_error_t afc_rename_path(afc_client_t client, const char *from, const char *to)
+{
+	char *response = NULL;
+	char *send = (char *) malloc(sizeof(char) * (strlen(from) + strlen(to) + 1 + sizeof(uint32_t)));
+	uint32_t bytes = 0;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !from || !to || !client->afc_packet || !client->connection)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	memcpy(send, from, strlen(from) + 1);
+	memcpy(send + strlen(from) + 1, to, strlen(to) + 1);
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	client->afc_packet->operation = AFC_OP_RENAME_PATH;
+	ret = afc_dispatch_packet(client, send, strlen(to)+1 + strlen(from)+1, &bytes);
+	free(send);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &response, &bytes);
+	if (response)
+		free(response);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Creates a directory on the phone.
+ * 
+ * @param client The client to use to make a directory.
+ * @param dir The directory's path. (must be a fully-qualified path, I assume
+ *        all other mkdir restrictions apply as well)
+ *
+ * @return AFC_E_SUCCESS if everythong went well, AFC_E_INVALID_ARGUMENT
+ *         if arguments are NULL or invalid, AFC_E_NOT_ENOUGH_DATA otherwise.
+ */
+afc_error_t afc_make_directory(afc_client_t client, const char *dir)
+{
+	uint32_t bytes = 0;
+	char *response = NULL;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	client->afc_packet->operation = AFC_OP_MAKE_DIR;
+	client->afc_packet->this_length = client->afc_packet->entire_length = 0;
+	ret = afc_dispatch_packet(client, dir, strlen(dir)+1, &bytes);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &response, &bytes);
+	if (response)
+		free(response);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Gets information about a specific file.
+ * 
+ * @param client The client to use to get the information of the file.
+ * @param path The fully-qualified path to the file. 
+ * @param infolist Pointer to a buffer that will be filled with a NULL-terminated
+ *                 list of strings with the file information.
+ *                 Set to NULL before calling this function.
+ * 
+ * @return AFC_E_SUCCESS on success or an AFC_E_* error value
+ *         when something went wrong.
+ */
+afc_error_t afc_get_file_info(afc_client_t client, const char *path, char ***infolist)
+{
+	char *received = NULL;
+	uint32_t bytes = 0;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !path || !infolist)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	client->afc_packet->operation = AFC_OP_GET_FILE_INFO;
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	ret = afc_dispatch_packet(client, path, strlen(path)+1, &bytes);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+
+	// Receive data
+	ret = afc_receive_data(client, &received, &bytes);
+	if (received) {
+		*infolist = make_strings_list(received, bytes);
+		free(received);
+	}
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Opens a file on the phone.
+ * 
+ * @param client The client to use to open the file. 
+ * @param filename The file to open. (must be a fully-qualified path)
+ * @param file_mode The mode to use to open the file. Can be AFC_FILE_READ or
+ * 		    AFC_FILE_WRITE; the former lets you read and write,
+ * 		    however, and the second one will *create* the file,
+ * 		    destroying anything previously there.
+ * @param handle Pointer to a uint64_t that will hold the handle of the file
+ * 
+ * @return AFC_E_SUCCESS on success or an AFC_E_* error on failure.
+ */
+iphone_error_t
+afc_file_open(afc_client_t client, const char *filename,
+					 afc_file_mode_t file_mode, uint64_t *handle)
+{
+	uint64_t file_mode_loc = GUINT64_TO_LE(file_mode);
+	uint32_t bytes = 0;
+	char *data = (char *) malloc(sizeof(char) * (8 + strlen(filename) + 1));
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	// set handle to 0 so in case an error occurs, the handle is invalid
+	*handle = 0;
+
+	if (!client || !client->connection || !client->afc_packet)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	memcpy(data, &file_mode_loc, 8);
+	memcpy(data + 8, filename, strlen(filename));
+	data[8 + strlen(filename)] = '\0';
+	client->afc_packet->operation = AFC_OP_FILE_OPEN;
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	ret = afc_dispatch_packet(client, data, 8 + strlen(filename) + 1, &bytes);
+	free(data);
+
+	if (ret != AFC_E_SUCCESS) {
+		debug_info("Didn't receive a response to the command");
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive the data
+	ret = afc_receive_data(client, &data, &bytes);
+	if ((ret == AFC_E_SUCCESS) && (bytes > 0) && data) {
+		afc_unlock(client);
+
+		// Get the file handle
+		memcpy(handle, data, sizeof(uint64_t));
+		free(data);
+		return ret;
+	}
+
+	debug_info("Didn't get any further data");
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Attempts to the read the given number of bytes from the given file.
+ * 
+ * @param client The relevant AFC client
+ * @param handle File handle of a previously opened file
+ * @param data The pointer to the memory region to store the read data
+ * @param length The number of bytes to read
+ * @param bytes_read The number of bytes actually read.
+ *
+ * @return AFC_E_SUCCESS on success or an AFC_E_* error value on error.
+ */
+iphone_error_t
+afc_file_read(afc_client_t client, uint64_t handle, char *data, uint32_t length, uint32_t *bytes_read)
+{
+	char *input = NULL;
+	uint32_t current_count = 0, bytes_loc = 0;
+	const uint32_t MAXIMUM_READ_SIZE = 1 << 16;
+	afc_error_t ret = AFC_E_SUCCESS;
+
+	if (!client || !client->afc_packet || !client->connection || handle == 0)
+		return AFC_E_INVALID_ARGUMENT;
+	debug_info("called for length %i", length);
+
+	afc_lock(client);
+
+	// Looping here to get around the maximum amount of data that
+	// afc_receive_data can handle
+	while (current_count < length) {
+		debug_info("current count is %i but length is %i", current_count, length);
+
+		// Send the read command
+		AFCFilePacket *packet = (AFCFilePacket *) malloc(sizeof(AFCFilePacket));
+		packet->filehandle = handle;
+		packet->size = GUINT64_TO_LE(((length - current_count) < MAXIMUM_READ_SIZE) ? (length - current_count) : MAXIMUM_READ_SIZE);
+		client->afc_packet->operation = AFC_OP_READ;
+		client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+		ret = afc_dispatch_packet(client, (char *) packet, sizeof(AFCFilePacket), &bytes_loc);
+		free(packet);
+
+		if (ret != AFC_E_SUCCESS) {
+			afc_unlock(client);
+			return AFC_E_NOT_ENOUGH_DATA;
+		}
+		// Receive the data
+		ret = afc_receive_data(client, &input, &bytes_loc);
+		debug_info("afc_receive_data returned error: %d", ret);
+		debug_info("bytes returned: %i", bytes_loc);
+		if (ret != AFC_E_SUCCESS) {
+			afc_unlock(client);
+			return ret;
+		} else if (bytes_loc == 0) {
+			if (input)
+				free(input);
+			afc_unlock(client);
+			*bytes_read = current_count;
+			/* FIXME: check that's actually a success */
+			return ret;
+		} else {
+			if (input) {
+				debug_info("%d", bytes_loc);
+				memcpy(data + current_count, input, (bytes_loc > length) ? length : bytes_loc);
+				free(input);
+				input = NULL;
+				current_count += (bytes_loc > length) ? length : bytes_loc;
+			}
+		}
+	}
+	debug_info("returning current_count as %i", current_count);
+
+	afc_unlock(client);
+	*bytes_read = current_count;
+	return ret;
+}
+
+/** Writes a given number of bytes to a file.
+ * 
+ * @param client The client to use to write to the file.
+ * @param handle File handle of previously opened file. 
+ * @param data The data to write to the file.
+ * @param length How much data to write.
+ * @param bytes_written The number of bytes actually written to the file.
+ * 
+ * @return AFC_E_SUCCESS on success, or an AFC_E_* error value on error.
+ */
+iphone_error_t
+afc_file_write(afc_client_t client, uint64_t handle, const char *data, uint32_t length, uint32_t *bytes_written)
+{
+	char *acknowledgement = NULL;
+	const uint32_t MAXIMUM_WRITE_SIZE = 1 << 15;
+	uint32_t current_count = 0, i = 0;
+	uint32_t segments = (length / MAXIMUM_WRITE_SIZE);
+	uint32_t bytes_loc = 0;
+	char *out_buffer = NULL;
+	afc_error_t ret = AFC_E_SUCCESS;
+
+	if (!client || !client->afc_packet || !client->connection || !bytes_written || (handle == 0))
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	debug_info("Write length: %i", length);
+
+	// Divide the file into segments.
+	for (i = 0; i < segments; i++) {
+		// Send the segment
+		client->afc_packet->this_length = sizeof(AFCPacket) + 8;
+		client->afc_packet->entire_length = client->afc_packet->this_length + MAXIMUM_WRITE_SIZE;
+		client->afc_packet->operation = AFC_OP_WRITE;
+		out_buffer = (char *) malloc(sizeof(char) * client->afc_packet->entire_length - sizeof(AFCPacket));
+		memcpy(out_buffer, (char *)&handle, sizeof(uint64_t));
+		memcpy(out_buffer + 8, data + current_count, MAXIMUM_WRITE_SIZE);
+		ret = afc_dispatch_packet(client, out_buffer, MAXIMUM_WRITE_SIZE + 8, &bytes_loc);
+		if (ret != AFC_E_SUCCESS) {
+			afc_unlock(client);
+			return AFC_E_NOT_ENOUGH_DATA;
+		}
+		free(out_buffer);
+		out_buffer = NULL;
+
+		current_count += bytes_loc;
+		ret = afc_receive_data(client, &acknowledgement, &bytes_loc);
+		if (ret != AFC_E_SUCCESS) {
+			afc_unlock(client);
+			return ret;
+		} else {
+			free(acknowledgement);
+		}
+	}
+
+	// By this point, we should be at the end. i.e. the last segment that
+	// didn't get sent in the for loop
+	// this length is fine because it's always sizeof(AFCPacket) + 8, but
+	// to be sure we do it again
+	if (current_count == length) {
+		afc_unlock(client);
+		*bytes_written = current_count;
+		return ret;
+	}
+
+	client->afc_packet->this_length = sizeof(AFCPacket) + 8;
+	client->afc_packet->entire_length = client->afc_packet->this_length + (length - current_count);
+	client->afc_packet->operation = AFC_OP_WRITE;
+	out_buffer = (char *) malloc(sizeof(char) * client->afc_packet->entire_length - sizeof(AFCPacket));
+	memcpy(out_buffer, (char *) &handle, sizeof(uint64_t));
+	memcpy(out_buffer + 8, data + current_count, (length - current_count));
+	ret = afc_dispatch_packet(client, out_buffer, (length - current_count) + 8, &bytes_loc);
+	free(out_buffer);
+	out_buffer = NULL;
+
+	current_count += bytes_loc;
+
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		*bytes_written = current_count;
+		return AFC_E_SUCCESS;
+	}
+
+	ret = afc_receive_data(client, &acknowledgement, &bytes_loc);
+	afc_unlock(client);
+	if (ret != AFC_E_SUCCESS) {
+		debug_info("uh oh?");
+	} else {
+		free(acknowledgement);
+	}
+	*bytes_written = current_count;
+	return ret;
+}
+
+/** Closes a file on the phone. 
+ * 
+ * @param client The client to close the file with.
+ * @param handle File handle of a previously opened file.
+ */
+afc_error_t afc_file_close(afc_client_t client, uint64_t handle)
+{
+	char *buffer = malloc(sizeof(char) * 8);
+	uint32_t bytes = 0;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || (handle == 0))
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	debug_info("File handle %i", handle);
+
+	// Send command
+	memcpy(buffer, &handle, sizeof(uint64_t));
+	client->afc_packet->operation = AFC_OP_FILE_CLOSE;
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	ret = afc_dispatch_packet(client, buffer, 8, &bytes);
+	free(buffer);
+	buffer = NULL;
+
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_UNKNOWN_ERROR;
+	}
+
+	// Receive the response
+	ret = afc_receive_data(client, &buffer, &bytes);
+	if (buffer)
+		free(buffer);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Locks or unlocks a file on the phone. 
+ *
+ * makes use of flock on the device, see
+ * http://developer.apple.com/documentation/Darwin/Reference/ManPages/man2/flock.2.html
+ *
+ * @param client The client to lock the file with.
+ * @param handle File handle of a previously opened file.
+ * @param operation the lock or unlock operation to perform, this is one of
+ *        AFC_LOCK_SH (shared lock), AFC_LOCK_EX (exclusive lock),
+ *        or AFC_LOCK_UN (unlock).
+ */
+afc_error_t afc_file_lock(afc_client_t client, uint64_t handle, afc_lock_op_t operation)
+{
+	char *buffer = malloc(16);
+	uint32_t bytes = 0;
+	uint64_t op = GUINT64_TO_LE(operation);
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || (handle == 0))
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	debug_info("file handle %i", handle);
+
+	// Send command
+	memcpy(buffer, &handle, sizeof(uint64_t));
+	memcpy(buffer + 8, &op, 8);
+
+	client->afc_packet->operation = AFC_OP_FILE_LOCK;
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	ret = afc_dispatch_packet(client, buffer, 16, &bytes);
+	free(buffer);
+	buffer = NULL;
+
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		debug_info("could not send lock command");
+		return AFC_E_UNKNOWN_ERROR;
+	}
+	// Receive the response
+	ret = afc_receive_data(client, &buffer, &bytes);
+	if (buffer) {
+		debug_buffer(buffer, bytes);
+		free(buffer);
+	}
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Seeks to a given position of a pre-opened file on the phone. 
+ * 
+ * @param client The client to use to seek to the position.
+ * @param handle File handle of a previously opened.
+ * @param offset Seek offset.
+ * @param whence Seeking direction, one of SEEK_SET, SEEK_CUR, or SEEK_END.
+ * 
+ * @return AFC_E_SUCCESS on success, AFC_E_NOT_ENOUGH_DATA on failure.
+ */
+afc_error_t afc_file_seek(afc_client_t client, uint64_t handle, int64_t offset, int whence)
+{
+	char *buffer = (char *) malloc(sizeof(char) * 24);
+	int64_t offset_loc = (int64_t)GUINT64_TO_LE(offset);
+	uint64_t whence_loc = GUINT64_TO_LE(whence);
+	uint32_t bytes = 0;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || (handle == 0))
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send the command
+	memcpy(buffer, &handle, sizeof(uint64_t));	// handle
+	memcpy(buffer + 8, &whence_loc, sizeof(uint64_t));	// fromwhere
+	memcpy(buffer + 16, &offset_loc, sizeof(uint64_t));	// offset
+	client->afc_packet->operation = AFC_OP_FILE_SEEK;
+	client->afc_packet->this_length = client->afc_packet->entire_length = 0;
+	ret = afc_dispatch_packet(client, buffer, 24, &bytes);
+	free(buffer);
+	buffer = NULL;
+
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &buffer, &bytes);
+	if (buffer)
+		free(buffer);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Returns current position in a pre-opened file on the phone.
+ * 
+ * @param client The client to use.
+ * @param handle File handle of a previously opened file.
+ * @param position Position in bytes of indicator
+ * 
+ * @return AFC_E_SUCCESS on success, AFC_E_NOT_ENOUGH_DATA on failure.
+ */
+afc_error_t afc_file_tell(afc_client_t client, uint64_t handle, uint64_t *position)
+{
+	char *buffer = (char *) malloc(sizeof(char) * 8);
+	uint32_t bytes = 0;
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || (handle == 0))
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send the command
+	memcpy(buffer, &handle, sizeof(uint64_t));	// handle
+	client->afc_packet->operation = AFC_OP_FILE_TELL;
+	client->afc_packet->this_length = client->afc_packet->entire_length = 0;
+	ret = afc_dispatch_packet(client, buffer, 8, &bytes);
+	free(buffer);
+	buffer = NULL;
+
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+
+	// Receive the data
+	ret = afc_receive_data(client, &buffer, &bytes);
+	if (bytes > 0 && buffer) {
+		/* Get the position */
+		memcpy(position, buffer, sizeof(uint64_t));
+		*position = GUINT64_FROM_LE(*position);
+	}
+	if (buffer)
+		free(buffer);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Sets the size of a file on the phone.
+ * 
+ * @param client The client to use to set the file size.
+ * @param handle File handle of a previously opened file.
+ * @param newsize The size to set the file to. 
+ * 
+ * @return 0 on success, -1 on failure. 
+ * 
+ * @note This function is more akin to ftruncate than truncate, and truncate
+ *       calls would have to open the file before calling this, sadly.
+ */
+afc_error_t afc_file_truncate(afc_client_t client, uint64_t handle, uint64_t newsize)
+{
+	char *buffer = (char *) malloc(sizeof(char) * 16);
+	uint32_t bytes = 0;
+	uint64_t newsize_loc = GUINT64_TO_LE(newsize);
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || (handle == 0))
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	memcpy(buffer, &handle, sizeof(uint64_t));	// handle
+	memcpy(buffer + 8, &newsize_loc, sizeof(uint64_t));	// newsize
+	client->afc_packet->operation = AFC_OP_FILE_SET_SIZE;
+	client->afc_packet->this_length = client->afc_packet->entire_length = 0;
+	ret = afc_dispatch_packet(client, buffer, 16, &bytes);
+	free(buffer);
+	buffer = NULL;
+
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &buffer, &bytes);
+	if (buffer)
+		free(buffer);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Sets the size of a file on the phone without prior opening it.
+ * 
+ * @param client The client to use to set the file size.
+ * @param path The path of the file to be truncated.
+ * @param newsize The size to set the file to. 
+ * 
+ * @return AFC_E_SUCCESS if everything went well, AFC_E_INVALID_ARGUMENT
+ *         if arguments are NULL or invalid, AFC_E_NOT_ENOUGH_DATA otherwise.
+ */
+afc_error_t afc_truncate(afc_client_t client, const char *path, uint64_t newsize)
+{
+	char *response = NULL;
+	char *send = (char *) malloc(sizeof(char) * (strlen(path) + 1 + 8));
+	uint32_t bytes = 0;
+	uint64_t size_requested = GUINT64_TO_LE(newsize);
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !path || !client->afc_packet || !client->connection)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	memcpy(send, &size_requested, 8);
+	memcpy(send + 8, path, strlen(path) + 1);
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	client->afc_packet->operation = AFC_OP_TRUNCATE;
+	ret = afc_dispatch_packet(client, send, 8 + strlen(path) + 1, &bytes);
+	free(send);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &response, &bytes);
+	if (response)
+		free(response);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Creates a hard link or symbolic link on the device. 
+ * 
+ * @param client The client to use for making a link
+ * @param type 1 = hard link, 2 = symlink
+ * @param target The file to be linked.
+ * @param linkname The name of link.
+ * 
+ * @return AFC_E_SUCCESS if everything went well, AFC_E_INVALID_ARGUMENT
+ *         if arguments are NULL or invalid, AFC_E_NOT_ENOUGH_DATA otherwise.
+ */
+afc_error_t afc_make_link(afc_client_t client, afc_link_type_t linktype, const char *target, const char *linkname)
+{
+	char *response = NULL;
+	char *send = (char *) malloc(sizeof(char) * (strlen(target)+1 + strlen(linkname)+1 + 8));
+	uint32_t bytes = 0;
+	uint64_t type = GUINT64_TO_LE(linktype);
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !target || !linkname || !client->afc_packet || !client->connection)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	debug_info("link type: %lld", type);
+	debug_info("target: %s, length:%d", target, strlen(target));
+	debug_info("linkname: %s, length:%d", linkname, strlen(linkname));
+
+	// Send command
+	memcpy(send, &type, 8);
+	memcpy(send + 8, target, strlen(target) + 1);
+	memcpy(send + 8 + strlen(target) + 1, linkname, strlen(linkname) + 1);
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	client->afc_packet->operation = AFC_OP_MAKE_LINK;
+	ret = afc_dispatch_packet(client, send, 8 + strlen(linkname) + 1 + strlen(target) + 1, &bytes);
+	free(send);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &response, &bytes);
+	if (response)
+		free(response);
+
+	afc_unlock(client);
+
+	return ret;
+}
+
+/** Sets the modification time of a file on the phone.
+ * 
+ * @param client The client to use to set the file size.
+ * @param path Path of the file for which the modification time should be set.
+ * @param mtime The modification time to set in nanoseconds since epoch.
+ * 
+ * @return AFC_E_SUCCESS if everything went well, AFC_E_INVALID_ARGUMENT
+ *         if arguments are NULL or invalid, AFC_E_NOT_ENOUGH_DATA otherwise.
+ */
+afc_error_t afc_set_file_time(afc_client_t client, const char *path, uint64_t mtime)
+{
+	char *response = NULL;
+	char *send = (char *) malloc(sizeof(char) * (strlen(path) + 1 + 8));
+	uint32_t bytes = 0;
+	uint64_t mtime_loc = GUINT64_TO_LE(mtime);
+	afc_error_t ret = AFC_E_UNKNOWN_ERROR;
+
+	if (!client || !path || !client->afc_packet || !client->connection)
+		return AFC_E_INVALID_ARGUMENT;
+
+	afc_lock(client);
+
+	// Send command
+	memcpy(send, &mtime_loc, 8);
+	memcpy(send + 8, path, strlen(path) + 1);
+	client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+	client->afc_packet->operation = AFC_OP_SET_FILE_TIME;
+	ret = afc_dispatch_packet(client, send, 8 + strlen(path) + 1, &bytes);
+	free(send);
+	if (ret != AFC_E_SUCCESS) {
+		afc_unlock(client);
+		return AFC_E_NOT_ENOUGH_DATA;
+	}
+	// Receive response
+	ret = afc_receive_data(client, &response, &bytes);
+	if (response)
+		free(response);
+
+	afc_unlock(client);
+
+	return ret;
+}
+