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-rw-r--r--src/AFC.c54
1 files changed, 47 insertions, 7 deletions
diff --git a/src/AFC.c b/src/AFC.c
index 5c9f68c..d7a4dda 100644
--- a/src/AFC.c
+++ b/src/AFC.c
@@ -26,6 +26,21 @@ const int MAXIMUM_PACKET_SIZE = (2 << 15) - 32;
extern int debug;
+
+/* Locking, for thread-safety (well... kind of, hehe) */
+void afc_lock(AFClient *client) {
+ while (client->lock) {
+ sleep(200);
+ }
+ client->lock = 1;
+}
+
+void afc_unlock(AFClient *client) { // just to be pretty
+ client->lock = 0;
+}
+
+/* main AFC functions */
+
AFClient *afc_connect(iPhone *phone, int s_port, int d_port) {
if (!phone) return NULL;
AFClient *client = (AFClient*)malloc(sizeof(AFClient));
@@ -39,6 +54,7 @@ AFClient *afc_connect(iPhone *phone, int s_port, int d_port) {
client->afc_packet->header1 = 0x36414643;
client->afc_packet->header2 = 0x4141504C;
client->file_handle = 0;
+ client->lock = 0;
return client;
} else {
mux_close_connection(client->connection);
@@ -184,6 +200,7 @@ int receive_AFC_data(AFClient *client, char **dump_here) {
final_buffer = (char*)malloc(sizeof(char) * recv_len);
while(current_count < recv_len){
bytes = mux_recv(client->connection, buffer, recv_len-current_count);
+ if (debug) printf("receive_AFC_data: still collecting packets\n");
if (bytes < 0)
{
if(debug) printf("receive_AFC_data: mux_recv failed: %d\n", bytes);
@@ -194,6 +211,12 @@ int receive_AFC_data(AFClient *client, char **dump_here) {
if(debug) printf("receive_AFC_data: mux_recv delivered too much data\n");
break;
}
+ if (strstr(buffer, "CFA6LPAA")) {
+ if (debug) printf("receive_AFC_data: WARNING: there is AFC data in this packet at %i\n", strstr(buffer, "CFA6LPAA") - buffer);
+ if (debug) printf("receive_AFC_data: the total packet length is %i\n", bytes);
+ //continue; // but we do need to continue because packets/headers != data
+ }
+
memcpy(final_buffer+current_count, buffer, bytes);
current_count += bytes;
}
@@ -211,18 +234,20 @@ int receive_AFC_data(AFClient *client, char **dump_here) {
}
char **afc_get_dir_list(AFClient *client, const char *dir) {
+ afc_lock(client);
client->afc_packet->operation = AFC_LIST_DIR;
int bytes = 0;
char *blah = NULL, **list = NULL;
client->afc_packet->entire_length = client->afc_packet->this_length = 0;
bytes = dispatch_AFC_packet(client, dir, strlen(dir));
- if (!bytes) return NULL;
+ if (!bytes) { afc_unlock(client); return NULL; }
bytes = receive_AFC_data(client, &blah);
- if (!bytes && !blah) return NULL;
+ if (!bytes && !blah) { afc_unlock(client); return NULL; }
list = make_strings_list(blah, bytes);
free(blah);
+ afc_unlock(client);
return list;
}
@@ -243,23 +268,24 @@ char **make_strings_list(char *tokens, int true_length) {
int afc_delete_file(AFClient *client, const char *path) {
if (!client || !path || !client->afc_packet || !client->connection) return 0;
-
+ afc_lock(client);
char *receive = NULL;
client->afc_packet->this_length = client->afc_packet->entire_length = 0;
client->afc_packet->operation = AFC_DELETE;
int bytes;
bytes = dispatch_AFC_packet(client, path, strlen(path));
- if (bytes <= 0) return 0;
+ if (bytes <= 0) { afc_unlock(client); return 0; }
bytes = receive_AFC_data(client, &receive);
free(receive);
- if (bytes <= 0) return 0;
+ afc_unlock(client);
+ if (bytes <= 0) { return 0; }
else return 1;
}
int afc_rename_file(AFClient *client, const char *from, const char *to) {
if (!client || !from || !to || !client->afc_packet || !client->connection) return 0;
-
+ afc_lock(client);
char *receive = NULL;
char *send = (char*)malloc(sizeof(char) * (strlen(from) + strlen(to) + 1 + sizeof(uint32)));
int bytes = 0;
@@ -271,10 +297,11 @@ int afc_rename_file(AFClient *client, const char *from, const char *to) {
client->afc_packet->entire_length = client->afc_packet->this_length = 0;
client->afc_packet->operation = AFC_RENAME;
bytes = dispatch_AFC_packet(client, send, strlen(to) + strlen(from) + 2);
- if (bytes <= 0) return 0;
+ if (bytes <= 0) { afc_unlock(client); return 0; }
bytes = receive_AFC_data(client, &receive);
free(receive);
+ afc_unlock(client);
if (bytes <= 0) return 0;
else return 1;
}
@@ -284,6 +311,7 @@ int afc_rename_file(AFClient *client, const char *from, const char *to) {
AFCFile *afc_get_file_info(AFClient *client, const char *path) {
client->afc_packet->operation = AFC_GET_INFO;
client->afc_packet->entire_length = client->afc_packet->this_length = 0;
+ afc_lock(client);
dispatch_AFC_packet(client, path, strlen(path));
char *received, **list;
@@ -293,6 +321,7 @@ AFCFile *afc_get_file_info(AFClient *client, const char *path) {
length = receive_AFC_data(client, &received);
list = make_strings_list(received, length);
free(received);
+ afc_unlock(client); // the rest is just interpretation anyway
if (list) {
my_file = (AFCFile *)malloc(sizeof(AFCFile));
for (i = 0; strcmp(list[i], ""); i++) {
@@ -323,6 +352,7 @@ AFCFile *afc_get_file_info(AFClient *client, const char *path) {
AFCFile *afc_open_file(AFClient *client, const char *filename, uint32 file_mode) {
if (file_mode != AFC_FILE_READ && file_mode != AFC_FILE_WRITE) return NULL;
if (!client ||!client->connection || !client->afc_packet) return NULL;
+ afc_lock(client);
char *further_data = (char*)malloc(sizeof(char) * (8 + strlen(filename) + 1));
AFCFile *file_infos = NULL;
memcpy(further_data, &file_mode, 4);
@@ -338,10 +368,12 @@ AFCFile *afc_open_file(AFClient *client, const char *filename, uint32 file_mode)
free(further_data);
if (bytes <= 0) {
if (debug) printf("didn't read enough\n");
+ afc_unlock(client);
return NULL;
} else {
length_thing = receive_AFC_data(client, &further_data);
if (length_thing && further_data) {
+ afc_unlock(client); // don't want to hang on the next call... and besides, it'll re-lock, do its thing, and unlock again anyway.
file_infos = afc_get_file_info(client, filename);
memcpy(&file_infos->filehandle, further_data, 4);
return file_infos;
@@ -357,6 +389,8 @@ AFCFile *afc_open_file(AFClient *client, const char *filename, uint32 file_mode)
int afc_read_file(AFClient *client, AFCFile *file, char *data, int length) {
if (!client || !client->afc_packet || !client->connection || !file) return -1;
AFCFilePacket *packet = (AFCFilePacket*)malloc(sizeof(AFCFilePacket));
+ if (debug) printf("afc_read_file called for length %i\n");
+ afc_lock(client);
char *input = NULL;
packet->unknown1 = packet->unknown2 = 0;
packet->filehandle = file->filehandle;
@@ -369,6 +403,7 @@ int afc_read_file(AFClient *client, AFCFile *file, char *data, int length) {
if (bytes > 0) {
bytes = receive_AFC_data(client, &input);
+ afc_unlock(client);
if (bytes < 0) {
if (input) free(input);
return -1;
@@ -382,6 +417,7 @@ int afc_read_file(AFClient *client, AFCFile *file, char *data, int length) {
return (bytes > length) ? length : bytes;
}
} else {
+ afc_unlock(client);
return -1;
}
return 0;
@@ -390,6 +426,7 @@ int afc_read_file(AFClient *client, AFCFile *file, char *data, int length) {
int afc_write_file(AFClient *client, AFCFile *file, const char *data, int length) {
char *acknowledgement = NULL;
if (!client ||!client->afc_packet || !client->connection || !file) return -1;
+ afc_lock(client);
client->afc_packet->this_length = sizeof(AFCPacket) + 8;
client->afc_packet->entire_length = client->afc_packet->this_length + length;
client->afc_packet->operation = AFC_WRITE;
@@ -407,6 +444,7 @@ int afc_write_file(AFClient *client, AFCFile *file, const char *data, int length
zero = bytes;
bytes = receive_AFC_data(client, &acknowledgement);
+ afc_unlock(client);
if (bytes <= 0) {
if (debug) printf("afc_write_file: uh oh?\n");
}
@@ -418,6 +456,7 @@ void afc_close_file(AFClient *client, AFCFile *file) {
char *buffer = malloc(sizeof(char) * 8);
uint32 zero = 0;
if (debug) printf("File handle %i\n", file->filehandle);
+ afc_lock(client);
memcpy(buffer, &file->filehandle, sizeof(uint32));
memcpy(buffer+sizeof(uint32), &zero, sizeof(zero));
client->afc_packet->operation = AFC_FILE_CLOSE;
@@ -430,6 +469,7 @@ void afc_close_file(AFClient *client, AFCFile *file) {
if (!bytes) return;
bytes = receive_AFC_data(client, &buffer);
+ afc_unlock(client);
return;
if (buffer) free(buffer); // we're *SUPPOSED* to get an "error" here.
}
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