diff options
Diffstat (limited to 'src/AFC.c')
| -rw-r--r-- | src/AFC.c | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/src/AFC.c b/src/AFC.c new file mode 100644 index 0000000..f3d538e --- /dev/null +++ b/src/AFC.c @@ -0,0 +1,381 @@ +/* + * AFC.c -- contains functions for the built-in AFC client. + * Written by FxChiP + */ + +#include "AFC.h" + +extern int debug; + +AFClient *afc_connect(iPhone *phone, int s_port, int d_port) { + if (!phone) return NULL; + AFClient *client = (AFClient*)malloc(sizeof(AFClient)); + client->connection = mux_connect(phone, s_port, d_port); + if (!client->connection) { free(client); return NULL; } + else { + client->afc_packet = (AFCPacket*)malloc(sizeof(AFCPacket)); + if (client->afc_packet) { + client->phone = phone; + client->afc_packet->packet_num = 0; + client->afc_packet->unknown1 = client->afc_packet->unknown2 = client->afc_packet->unknown3 = client->afc_packet->unknown4 = client->afc_packet->entire_length = client->afc_packet->this_length = 0; + client->afc_packet->header1 = 0x36414643; + client->afc_packet->header2 = 0x4141504C; + client->file_handle = 0; + return client; + } else { + mux_close_connection(client->phone, client->connection); + free(client); + return NULL; + } + } + + return NULL; // should never get to this point +} + +void afc_disconnect(AFClient *client) { + // client and its members should never be NULL is assumed here. + if (!client || !client->connection || !client->phone || !client->afc_packet) return; + mux_close_connection(client->phone, client->connection); + free(client->afc_packet); + free(client); +} + +int count_nullspaces(char *string, int number) { + int i = 0, nulls = 0; + for (i = 0; i < number; i++) { + if (string[i] == '\0') nulls++; + } + return nulls; +} + +int dispatch_AFC_packet(AFClient *client, char *data, int length) { + char *buffer; + int bytes = 0, offset = 0; + if (!client || !client->connection || !client->phone || !client->afc_packet) return 0; + if (!data || !length) length = 0; + + client->afc_packet->packet_num++; + if (!client->afc_packet->entire_length) client->afc_packet->entire_length = client->afc_packet->this_length = (length) ? sizeof(AFCPacket) + length + 1 : sizeof(AFCPacket); + if (!client->afc_packet->this_length) client->afc_packet->this_length = sizeof(AFCPacket); + + if (client->afc_packet->this_length != client->afc_packet->entire_length) { + // 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) + char *buffer = (char*)malloc(client->afc_packet->this_length); + memcpy(buffer, (char*)client->afc_packet, sizeof(AFCPacket)); + offset = client->afc_packet->this_length - sizeof(AFCPacket); + if (debug) printf("dispatch_AFC_packet: Offset: %i\n", offset); + if ((length) < (client->afc_packet->entire_length - client->afc_packet->this_length)) { + if (debug) printf("dispatch_AFC_packet: Length did not resemble what it was supposed to based on the packet.\nlength minus offset: %i\nrest of packet: %i\n", length-offset, client->afc_packet->entire_length - client->afc_packet->this_length); + free(buffer); + return 0; + } + if (debug) printf("dispatch_AFC_packet: fucked-up packet method (probably a write)\n"); + memcpy(buffer+sizeof(AFCPacket), data, offset); + bytes = mux_send(client->phone, client->connection, buffer, client->afc_packet->this_length); + free(buffer); + if (bytes <= 0) { return 0; } + if (debug) { + printf("dispatch_AFC_packet: sent the first now go with the second\n"); + printf("Length: %i\n", length-offset); + printf("Buffer: \n"); + fwrite(data+offset, 1, length-offset, stdout); + } + + + bytes = mux_send(client->phone, client->connection, data+offset, length-offset); + if (bytes <= 0) { return 0; } + else { return bytes; } + } else { + if (debug) printf("dispatch_AFC_packet doin things the old way\n"); + char *buffer = (char*)malloc(sizeof(char) * client->afc_packet->this_length); + if (debug) printf("dispatch_AFC_packet packet length = %i\n", client->afc_packet->this_length); + memcpy(buffer, (char*)client->afc_packet, sizeof(AFCPacket)); + if (debug) printf("dispatch_AFC_packet packet data follows\n"); + if (length > 0) { memcpy(buffer+sizeof(AFCPacket), data, length); buffer[sizeof(AFCPacket)+length] = '\0'; } + if (debug) fwrite(buffer, 1, client->afc_packet->this_length, stdout); + if (debug) printf("\n"); + bytes = mux_send(client->phone, client->connection, buffer, client->afc_packet->this_length); + if (bytes <= 0) return 0; + else return bytes; + } + return 0; +} + +int receive_AFC_data(AFClient *client, char **dump_here) { + AFCPacket *r_packet; + char *buffer = (char*)malloc(sizeof(AFCPacket) * 4); + int bytes = 0, recv_len = 0; + + bytes = mux_recv(client->phone, client->connection, buffer, sizeof(AFCPacket) * 4); + if (bytes <= 0) { + free(buffer); + printf("Just didn't get enough.\n"); + *dump_here = NULL; + return 0; + } + + r_packet = (AFCPacket*)malloc(sizeof(AFCPacket)); + memcpy(r_packet, buffer, sizeof(AFCPacket)); + + if (r_packet->entire_length == r_packet->this_length && r_packet->entire_length > sizeof(AFCPacket) && r_packet->operation != AFC_ERROR) { + *dump_here = (char*)malloc(sizeof(char) * (r_packet->entire_length-sizeof(AFCPacket))); + memcpy(*dump_here, buffer+sizeof(AFCPacket), r_packet->entire_length-sizeof(AFCPacket)); + free(buffer); + free(r_packet); + return r_packet->entire_length - sizeof(AFCPacket); + } + + uint32 param1 = buffer[sizeof(AFCPacket)]; + free(buffer); + + if (r_packet->operation == 0x01 && !((client->afc_packet->operation == AFC_DELETE && param1 == 7))) { + if (debug) printf("Oops? Bad operation code received.\n"); + if (param1 == 0) { + if (debug) printf("... false alarm, but still\n"); + return 1; + } + else { if (debug) printf("Errno %i\n", param1); } + free(r_packet); + *dump_here = NULL; + return 0; + } else { + if (debug) printf("Operation code %x\nFull length %i and this length %i\n", r_packet->operation, r_packet->entire_length, r_packet->this_length); + } + + recv_len = r_packet->entire_length - r_packet->this_length; + free(r_packet); + if (!recv_len) return bytes; + buffer = (char*)malloc(sizeof(char) * recv_len); + bytes = mux_recv(client->phone, client->connection, buffer, recv_len); + if (bytes <= 0) { + free(buffer); + printf("Didn't get it at the second pass.\n"); + *dump_here = NULL; + return 0; + } + + *dump_here = buffer; // what they do beyond this point = not my problem + return bytes; +} + +char **afc_get_dir_list(AFClient *client, char *dir) { + 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; + + bytes = receive_AFC_data(client, &blah); + if (!bytes && !blah) return NULL; + + list = make_strings_list(blah, bytes); + free(blah); + return list; +} + +char **make_strings_list(char *tokens, int true_length) { + if (!tokens || !true_length) return NULL; + int nulls = 0, i = 0, j = 0; + char **list = 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] = strdup(""); + return list; +} + +int afc_delete_file(AFClient *client, const char *path) { + if (!client || !path || !client->afc_packet || !client->phone ||!client->connection) return 0; + + 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; + + bytes = receive_AFC_data(client, &receive); + free(receive); + 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->phone || !client->connection) return 0; + + char *receive = NULL; + char *send = (char*)malloc(sizeof(char) * (strlen(from) + strlen(to) + 1 + sizeof(uint32))); + int bytes = 0; + + memcpy(send, from, strlen(from)+1); + memcpy(send+strlen(from)+1, to, strlen(to)); + fwrite(send, 1, strlen(from)+1+strlen(to), stdout); + printf("\n"); + 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; + + bytes = receive_AFC_data(client, &receive); + free(receive); + if (bytes <= 0) return 0; + else return 1; +} + + + +AFCFile *afc_get_file_info(AFClient *client, char *path) { + client->afc_packet->operation = AFC_GET_INFO; + client->afc_packet->entire_length = client->afc_packet->this_length = 0; + dispatch_AFC_packet(client, path, strlen(path)); + + char *received, **list; + AFCFile *my_file; + int length, i = 0; + + length = receive_AFC_data(client, &received); + list = make_strings_list(received, length); + free(received); + if (list) { + my_file = (AFCFile *)malloc(sizeof(AFCFile)); + for (i = 0; strcmp(list[i], ""); i++) { + if (!strcmp(list[i], "st_size")) { + my_file->size = atoi(list[i+1]); + } + + + if (!strcmp(list[i], "st_blocks")) { + my_file->blocks = atoi(list[i+1]); + } + + if (!strcmp(list[i], "st_ifmt")) { + if (!strcmp(list[i+1], "S_IFREG")) { + my_file->type = S_IFREG; + } else if (!strcmp(list[i+1], "S_IFDIR")) { + my_file->type = S_IFDIR; + } + } + } + free_dictionary(list); + return my_file; + } else { + return NULL; + } +} + +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->phone ||!client->afc_packet) return NULL; + char *further_data = (char*)malloc(sizeof(char) * (8 + strlen(filename) + 1)); + AFCFile *file_infos = NULL; + memcpy(further_data, &file_mode, 4); + uint32 ag = 0; + memcpy(further_data+4, &ag, 4); + memcpy(further_data+8, filename, strlen(filename)); + further_data[8+strlen(filename)] = '\0'; + int bytes = 0, length_thing = 0; + client->afc_packet->operation = AFC_FILE_OPEN; + + client->afc_packet->entire_length = client->afc_packet->this_length = 0; + bytes = dispatch_AFC_packet(client, further_data, 8+strlen(filename)); + free(further_data); + if (bytes <= 0) { + if (debug) printf("didn't read enough\n"); + return NULL; + } else { + length_thing = receive_AFC_data(client, &further_data); + if (length_thing && further_data) { + file_infos = afc_get_file_info(client, filename); + memcpy(&file_infos->filehandle, further_data, 4); + return file_infos; + } else { + if (debug) printf("didn't get further data or something\n"); + return NULL; + } + } + if (debug) printf("what the fuck\n"); + return NULL; +} + +int afc_read_file(AFClient *client, AFCFile *file, char *data, int length) { + if (!client || !client->afc_packet || !client->phone || !client->connection || !file) return -1; + AFCFilePacket *packet = (AFCFilePacket*)malloc(sizeof(AFCFilePacket)); + char *input = NULL; + packet->unknown1 = packet->unknown2 = 0; + packet->filehandle = file->filehandle; + packet->size = length; + int bytes = 0; + + client->afc_packet->operation = AFC_READ; + client->afc_packet->entire_length = client->afc_packet->this_length = 0; + bytes = dispatch_AFC_packet(client, (char*)packet, sizeof(AFCFilePacket)); + + if (bytes > 0) { + bytes = receive_AFC_data(client, &input); + if (bytes <= 0) { + if (input) free(input); + return -1; + } else { + memcpy(data, input, (bytes > length) ? length : bytes); + free(input); + return (bytes > length) ? length : bytes; + } + } else { + return -1; + } + return 0; +} + +int afc_write_file(AFClient *client, AFCFile *file, char *data, int length) { + char *acknowledgement = NULL; + if (!client ||!client->afc_packet ||!client->phone || !client->connection || !file) return -1; + 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; + if (debug) printf("afc_write_file: Write length: %i\n", length); + uint32 zero = 0, bytes = 0; + + char *out_buffer = NULL; + out_buffer = (char*)malloc(sizeof(char) * client->afc_packet->entire_length - sizeof(AFCPacket)); + memcpy(out_buffer, (char*)&file->filehandle, sizeof(uint32)); + memcpy(out_buffer+4, (char*)&zero, sizeof(uint32)); + memcpy(out_buffer+8, data, length); + + bytes = dispatch_AFC_packet(client, out_buffer, length + 8); + if (!bytes) return -1; + + zero = bytes; + bytes = receive_AFC_data(client, &acknowledgement); + if (bytes <= 0) { + if (debug) printf("afc_write_file: uh oh?\n"); + } + + return zero; +} + +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); + memcpy(buffer, &file->filehandle, sizeof(uint32)); + memcpy(buffer+sizeof(uint32), &zero, sizeof(zero)); + client->afc_packet->operation = AFC_FILE_CLOSE; + int bytes = 0; + client->afc_packet->entire_length = client->afc_packet->this_length = 0; + bytes = dispatch_AFC_packet(client, buffer, sizeof(char) * 8); + + free(buffer); + client->afc_packet->entire_length = client->afc_packet->this_length = 0; + if (!bytes) return; + + bytes = receive_AFC_data(client, &buffer); + return; + if (buffer) free(buffer); // we're *SUPPOSED* to get an "error" here. +} + |