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-rw-r--r--src/AFC.c242
-rw-r--r--src/AFC.h2
2 files changed, 81 insertions, 163 deletions
diff --git a/src/AFC.c b/src/AFC.c
index 95ce0a1..87ce78e 100644
--- a/src/AFC.c
+++ b/src/AFC.c
@@ -21,7 +21,6 @@
#include <stdio.h>
#include <stdlib.h>
-#include <errno.h>
#include <unistd.h>
#include "AFC.h"
@@ -112,91 +111,7 @@ afc_error_t afc_client_free(afc_client_t client)
g_mutex_free(client->mutex);
}
free(client);
- return IPHONE_E_SUCCESS;
-}
-
-/**
- * Returns the AFC error code that has been sent by the device if
- * an error occured (set inside receive_AFC_data)
- *
- * @param client AFC client for that the error value is to be retrieved.
- *
- * @return AFC error code or -1 on error.
- */
-int afc_get_afcerror(afc_client_t client)
-{
- int res = -1;
- if (client) {
- afc_lock(client);
- res = client->afcerror;
- afc_unlock(client);
- }
- return res;
-}
-
-/**
- * Tries to convert the AFC error value into a meaningful errno value.
- * Internally used by afc_get_errno.
- *
- * @param afcerror AFC error value to convert
- *
- * @return errno value or -1 if the errno could not be determined.
- *
- * @see afc_get_errno
- */
-static int afcerror_to_errno(int afcerror)
-{
- int res = -1;
- switch (afcerror) {
- case 0: // ERROR_SUCCESS, this means no error.
- res = 0;
- break;
- case 4: // occurs if you try to open a file as directory
- res = ENOTDIR;
- break;
- case 7: // occurs e.g. if you try to close a file handle that
- // does not belong to an open file
- res = EINVAL;
- break;
- case 8: // occurs if you try to open a non-existent file
- res = ENOENT;
- break;
- case 9: // occurs if you try to open a directory as file
- res = EISDIR;
- break;
- case 10: // occurs if you try to open a file without permission
- res = EPERM;
- break;
- case 19: // occurs if you try to lock an already locked file
- res = EWOULDBLOCK;
- break;
- default: // we'll assume it's an errno value, but report it
- log_debug_msg("WARNING: unknown AFC error %d, perhaps it's '%s'?\n", afcerror, strerror(afcerror));
- res = afcerror;
- break;
- }
-
- log_debug_msg("Mapped AFC error %d to errno %d: %s\n", afcerror, res, strerror(res));
-
- return res;
-}
-
-/**
- * Returns the client's AFC error code converted to an errno value.
- *
- * @param client AFC client for that the errno value is to be retrieved.
- *
- * @return errno value or -1 on error.
- */
-int afc_get_errno(afc_client_t client)
-{
- int res = -1;
- if (client) {
- afc_lock(client);
- res = afcerror_to_errno(client->afcerror);
- afc_unlock(client);
- }
- return res;
+ return AFC_E_SUCCESS;
}
/** Dispatches an AFC packet over a client.
@@ -294,28 +209,26 @@ static int afc_dispatch_packet(afc_client_t client, const char *data, uint64_t l
* received raised a non-trivial error condition (i.e. non-zero with
* AFC_ERROR operation)
*/
-static int receive_AFC_data(afc_client_t client, char **dump_here)
+static afc_error_t afc_receive_data(afc_client_t client, char **dump_here, int *bytes)
{
AFCPacket header;
- int bytes = 0;
uint32_t entire_len = 0;
uint32_t this_len = 0;
uint32_t current_count = 0;
uint64_t param1 = -1;
- // reset internal afc error value
- client->afcerror = 0;
+ *bytes = 0;
- // first, read the AFC header
- usbmuxd_recv(client->sfd, (char*)&header, sizeof(AFCPacket), (uint32_t*)&bytes);
- if (bytes <= 0) {
+ /* first, read the AFC header */
+ usbmuxd_recv(client->sfd, (char*)&header, sizeof(AFCPacket), (uint32_t*)bytes);
+ if (*bytes <= 0) {
log_debug_msg("%s: Just didn't get enough.\n", __func__);
*dump_here = NULL;
- return -1;
- } else if ((uint32_t)bytes < sizeof(AFCPacket)) {
+ return AFC_E_MUX_ERROR;
+ } else if ((uint32_t)*bytes < sizeof(AFCPacket)) {
log_debug_msg("%s: Did not even get the AFCPacket header\n", __func__);
*dump_here = NULL;
- return -1;
+ return AFC_E_MUX_ERROR;
}
/* check if it's a valid AFC header */
@@ -328,23 +241,23 @@ static int receive_AFC_data(afc_client_t client, char **dump_here)
/* otherwise print a warning but do not abort */
log_debug_msg("%s: ERROR: Unexpected packet number (%lld != %lld) aborting.\n", __func__, header.packet_num, client->afc_packet->packet_num);
*dump_here = NULL;
- return -1;
+ return AFC_E_OP_HEADER_INVALID;
}
/* then, read the attached packet */
if (header.this_length < sizeof(AFCPacket)) {
log_debug_msg("%s: Invalid AFCPacket header received!\n", __func__);
*dump_here = NULL;
- return -1;
+ return AFC_E_OP_HEADER_INVALID;
} else if ((header.this_length == header.entire_length)
&& header.entire_length == sizeof(AFCPacket)) {
log_debug_msg("%s: Empty AFCPacket received!\n", __func__);
*dump_here = NULL;
+ *bytes = 0;
if (header.operation == AFC_OP_DATA) {
- return 0;
+ return AFC_E_SUCCESS;
} else {
- client->afcerror = EIO;
- return -1;
+ return AFC_E_IO_ERROR;
}
}
@@ -360,17 +273,17 @@ static int receive_AFC_data(afc_client_t client, char **dump_here)
*dump_here = (char*)malloc(entire_len);
if (this_len > 0) {
- usbmuxd_recv(client->sfd, *dump_here, this_len, (uint32_t*)&bytes);
- if (bytes <= 0) {
+ usbmuxd_recv(client->sfd, *dump_here, this_len, (uint32_t*)bytes);
+ if (*bytes <= 0) {
free(*dump_here);
*dump_here = NULL;
log_debug_msg("%s: Did not get packet contents!\n", __func__);
- return -1;
- } else if ((uint32_t)bytes < this_len) {
+ return AFC_E_NOT_ENOUGH_DATA;
+ } else if ((uint32_t)*bytes < this_len) {
free(*dump_here);
*dump_here = NULL;
log_debug_msg("%s: Could not receive this_len=%d bytes\n", __func__, this_len);
- return -1;
+ return AFC_E_NOT_ENOUGH_DATA;
}
}
@@ -378,12 +291,12 @@ static int receive_AFC_data(afc_client_t client, char **dump_here)
if (entire_len > this_len) {
while (current_count < entire_len) {
- usbmuxd_recv(client->sfd, (*dump_here)+current_count, entire_len - current_count, (uint32_t*)&bytes);
- if (bytes <= 0) {
- log_debug_msg("%s: Error receiving data (recv returned %d)\n", __func__, bytes);
+ usbmuxd_recv(client->sfd, (*dump_here)+current_count, entire_len - current_count, (uint32_t*)bytes);
+ if (*bytes <= 0) {
+ log_debug_msg("%s: Error receiving data (recv returned %d)\n", __func__, *bytes);
break;
}
- current_count += bytes;
+ current_count += *bytes;
}
if (current_count < entire_len) {
log_debug_msg("%s: WARNING: could not receive full packet (read %s, size %d)\n", __func__, current_count, entire_len);
@@ -394,39 +307,42 @@ static int receive_AFC_data(afc_client_t client, char **dump_here)
param1 = *(uint64_t*)(*dump_here);
}
- // check for errors
- if (header.operation == AFC_OP_DATA) {
- // we got a positive response!
- log_debug_msg("%s: got a success response\n", __func__);
- } else if (header.operation == AFC_OP_FILE_OPEN_RES) {
- // we got a file handle response
- log_debug_msg("%s: got a file handle response, handle=%lld\n", __func__, param1);
- } else if (header.operation == AFC_OP_STATUS) {
- // error message received
- if (param1 == 0) {
- // ERROR_SUCCESS, this is not an error!
- log_debug_msg("%s: ERROR_SUCCESS\n", __func__);
- } else {
- // but this is an error!
- log_debug_msg("%s: ERROR %lld\n", __func__, param1);
+ log_debug_msg("%s: packet data size = %i\n", __func__, current_count);
+ log_debug_msg("%s: packet data follows\n", __func__);
+ log_debug_buffer(*dump_here, current_count);
+
+ /* check operation types */
+ if (header.operation == AFC_OP_STATUS) {
+ /* status response */
+ log_debug_msg("%s: got a status response, code=%lld\n", __func__, param1);
+
+ if (param1 != AFC_E_SUCCESS) {
+ /* error status */
+ /* free buffer */
free(*dump_here);
*dump_here = NULL;
- // store error value
- client->afcerror = (int)param1;
- afcerror_to_errno(client->afcerror);
- return -1;
+ return (afc_error_t)param1;
}
+ } else if (header.operation == AFC_OP_DATA) {
+ /* data response */
+ log_debug_msg("%s: got a data response\n", __func__);
+ } else if (header.operation == AFC_OP_FILE_OPEN_RES) {
+ /* file handle response */
+ log_debug_msg("%s: got a file handle response, handle=%lld\n", __func__, param1);
} else {
/* unknown operation code received */
free(*dump_here);
*dump_here = NULL;
+ *bytes = 0;
log_debug_msg("%s: WARNING: Unknown operation code received 0x%llx param1=%lld\n", __func__, header.operation, param1);
fprintf(stderr, "%s: WARNING: Unknown operation code received 0x%llx param1=%lld\n", __func__, header.operation, param1);
- return -1;
+ return AFC_E_OP_NOT_SUPPORTED;
}
- return current_count;
+
+ *bytes = current_count;
+ return AFC_E_SUCCESS;
}
static int count_nullspaces(char *string, int number)
@@ -489,15 +405,13 @@ afc_error_t afc_read_directory(afc_client_t client, const char *dir, char ***lis
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive the data
- bytes = receive_AFC_data(client, &data);
- if (bytes < 0) {
+ ret = afc_receive_data(client, &data, &bytes);
+ if (ret != AFC_E_SUCCESS) {
afc_unlock(client);
- return IPHONE_E_AFC_ERROR;
+ return ret;
}
// Parse the data
list_loc = make_strings_list(data, bytes);
- if (list_loc)
- ret = IPHONE_E_SUCCESS;
if (data)
free(data);
@@ -534,10 +448,10 @@ afc_error_t afc_get_device_info(afc_client_t client, char ***infos)
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive the data
- bytes = receive_AFC_data(client, &data);
- if (bytes < 0) {
+ ret = afc_receive_data(client, &data, &bytes);
+ if (ret != AFC_E_SUCCESS) {
afc_unlock(client);
- return IPHONE_E_AFC_ERROR;
+ return ret;
}
// Parse the data
list = make_strings_list(data, bytes);
@@ -579,7 +493,7 @@ afc_error_t afc_remove_path(afc_client_t client, const char *path)
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive response
- bytes = receive_AFC_data(client, &response);
+ ret = afc_receive_data(client, &response, &bytes);
if (response)
free(response);
@@ -621,7 +535,7 @@ afc_error_t afc_rename_path(afc_client_t client, const char *from, const char *t
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive response
- bytes = receive_AFC_data(client, &response);
+ ret = afc_receive_data(client, &response, &bytes);
if (response)
free(response);
@@ -659,7 +573,7 @@ afc_error_t afc_make_directory(afc_client_t client, const char *dir)
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive response
- bytes = receive_AFC_data(client, &response);
+ ret = afc_receive_data(client, &response, &bytes);
if (response)
free(response);
@@ -696,14 +610,12 @@ afc_error_t afc_get_file_info(afc_client_t client, const char *path, char ***inf
afc_dispatch_packet(client, path, strlen(path)+1);
// Receive data
- length = receive_AFC_data(client, &received);
+ ret = afc_receive_data(client, &received, &bytes);
if (received) {
*infolist = make_strings_list(received, bytes);
free(received);
}
- log_debug_msg("%s: Didn't get any further data\n", __func__);
-
afc_unlock(client);
return ret;
@@ -754,8 +666,8 @@ afc_file_open(afc_client_t client, const char *filename,
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive the data
- length = receive_AFC_data(client, &data);
- if (length > 0 && data) {
+ ret = afc_receive_data(client, &data, &bytes);
+ if ((ret == AFC_E_SUCCESS) && (bytes > 0) && data) {
afc_unlock(client);
// Get the file handle
@@ -764,6 +676,8 @@ afc_file_open(afc_client_t client, const char *filename,
return ret;
}
+ log_debug_msg("%s: Didn't get any further data\n", __func__);
+
afc_unlock(client);
return ret;
@@ -811,9 +725,10 @@ afc_file_read(afc_client_t client, uint64_t handle, char *data, int length, uint
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive the data
- bytes_loc = receive_AFC_data(client, &input);
- log_debug_msg("%s: bytes returned: %i\n", __func__, bytes_loc);
- if (bytes_loc < 0) {
+ ret = afc_receive_data(client, &input, &bytes_loc);
+ log_debug_msg("%s: afc_receive_data returned error: %d\n", __func__, ret);
+ log_debug_msg("%s: bytes returned: %i\n", __func__, bytes_loc);
+ if (ret != AFC_E_SUCCESS) {
afc_unlock(client);
return ret;
} else if (bytes_loc == 0) {
@@ -887,8 +802,8 @@ afc_file_write(afc_client_t client, uint64_t handle,
out_buffer = NULL;
current_count += bytes_loc;
- bytes_loc = receive_AFC_data(client, &acknowledgement);
- if (bytes_loc < 0) {
+ ret = afc_receive_data(client, &acknowledgement, &bytes_loc);
+ if (ret != AFC_E_SUCCESS) {
afc_unlock(client);
return ret;
} else {
@@ -925,9 +840,9 @@ afc_file_write(afc_client_t client, uint64_t handle,
}
zero = bytes_loc;
- bytes_loc = receive_AFC_data(client, &acknowledgement);
+ ret = afc_receive_data(client, &acknowledgement, &bytes_loc);
afc_unlock(client);
- if (bytes_loc < 0) {
+ if (ret != AFC_E_SUCCESS) {
log_debug_msg("%s: uh oh?\n", __func__);
} else {
free(acknowledgement);
@@ -968,7 +883,7 @@ afc_error_t afc_file_close(afc_client_t client, uint64_t handle)
}
// Receive the response
- bytes = receive_AFC_data(client, &buffer);
+ ret = afc_receive_data(client, &buffer, &bytes);
if (buffer)
free(buffer);
@@ -1018,7 +933,7 @@ afc_error_t afc_file_lock(afc_client_t client, uint64_t handle, afc_lock_op_t op
return AFC_E_UNKNOWN_ERROR;
}
// Receive the response
- bytes = receive_AFC_data(client, &buffer);
+ ret = afc_receive_data(client, &buffer, &bytes);
if (buffer) {
log_debug_buffer(buffer, bytes);
free(buffer);
@@ -1065,7 +980,7 @@ afc_error_t afc_file_seek(afc_client_t client, uint64_t handle, int64_t offset,
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive response
- bytes = receive_AFC_data(client, &buffer);
+ ret = afc_receive_data(client, &buffer, &bytes);
if (buffer)
free(buffer);
@@ -1074,7 +989,12 @@ afc_error_t afc_file_seek(afc_client_t client, uint64_t handle, int64_t offset,
if (bytes < 0) {
return IPHONE_E_AFC_ERROR;
}
- return IPHONE_E_SUCCESS;
+ if (buffer)
+ free(buffer);
+
+ afc_unlock(client);
+
+ return ret;
}
/** Sets the size of a file on the phone.
@@ -1113,7 +1033,7 @@ afc_error_t afc_file_truncate(afc_client_t client, uint64_t handle, uint64_t new
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive response
- bytes = receive_AFC_data(client, &buffer);
+ ret = afc_receive_data(client, &buffer, &bytes);
if (buffer)
free(buffer);
@@ -1156,7 +1076,7 @@ afc_error_t afc_truncate(afc_client_t client, const char *path, off_t newsize)
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive response
- bytes = receive_AFC_data(client, &response);
+ ret = afc_receive_data(client, &response, &bytes);
if (response)
free(response);
@@ -1205,7 +1125,7 @@ afc_error_t afc_make_link(afc_client_t client, afc_link_type_t linktype, const c
return AFC_E_NOT_ENOUGH_DATA;
}
// Receive response
- bytes = receive_AFC_data(client, &response);
+ ret = afc_receive_data(client, &response, &bytes);
if (response)
free(response);
diff --git a/src/AFC.h b/src/AFC.h
index 909e8c3..7ed6bd8 100644
--- a/src/AFC.h
+++ b/src/AFC.h
@@ -50,7 +50,6 @@ struct afc_client_int {
AFCPacket *afc_packet;
int file_handle;
int lock;
- int afcerror;
GMutex *mutex;
};
@@ -86,4 +85,3 @@ enum {
AFC_OP_MAKE_LINK = 0x0000001C // MakeLink
};
-static int afcerror_to_errno(int afcerror);
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