[453] | 1 | // Copyright (c) Microsoft. All rights reserved.
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| 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information.
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| 3 |
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| 4 | #ifndef _BSD_SOURCE
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| 5 | #define _BSD_SOURCE
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| 6 | #define SOCKETIO_BERKELEY_UNDEF_BSD_SOURCE
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| 7 | #endif
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| 8 |
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| 9 | #define _DEFAULT_SOURCE
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| 10 | #include <net/if.h>
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| 11 | #undef _DEFAULT_SOURCE
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| 12 |
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| 13 | #ifdef SOCKETIO_BERKELEY_UNDEF_BSD_SOURCE
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| 14 | #undef _BSD_SOURCE
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| 15 | #undef SOCKETIO_BERKELEY_UNDEF_BSD_SOURCE
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| 16 | #endif
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| 17 |
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| 18 | #include <signal.h>
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| 19 | #include <stdlib.h>
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| 20 | #include <stddef.h>
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| 21 | #include <stdio.h>
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| 22 | #include <string.h>
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| 23 | #include <ctype.h>
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| 24 | #include "azure_c_shared_utility/socketio.h"
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| 25 | #include <sys/types.h>
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| 26 | #include <sys/socket.h>
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| 27 | #include <sys/select.h>
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| 28 | #ifdef TIZENRT
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| 29 | #include <net/lwip/tcp.h>
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| 30 | #else
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| 31 | #include <lwip/tcp.h>
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| 32 | #endif
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| 33 | #include <netdb.h>
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| 34 | #include <unistd.h>
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| 35 | #include <errno.h>
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| 36 | #include "azure_c_shared_utility/singlylinkedlist.h"
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| 37 | #include "azure_c_shared_utility/gballoc.h"
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| 38 | #include "azure_c_shared_utility/gbnetwork.h"
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| 39 | #include "azure_c_shared_utility/optimize_size.h"
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| 40 | #include "azure_c_shared_utility/optionhandler.h"
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| 41 | #include "azure_c_shared_utility/shared_util_options.h"
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| 42 | #include "azure_c_shared_utility/xlogging.h"
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| 43 | #include "azure_c_shared_utility/const_defines.h"
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| 44 | #include "azure_c_shared_utility/dns_resolver.h"
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| 45 | //#include <sys/ioctl.h>
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| 46 | //#include <netinet/in.h>
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| 47 | //#include <arpa/inet.h>
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| 48 | //#include <sys/un.h>
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| 49 |
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| 50 | #define SOCKET_SUCCESS 0
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| 51 | #define INVALID_SOCKET -1
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| 52 | #define SOCKET_SEND_FAILURE -1
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| 53 | #define MAC_ADDRESS_STRING_LENGTH 18
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| 54 |
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| 55 | #ifndef IFREQ_BUFFER_SIZE
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| 56 | #define IFREQ_BUFFER_SIZE 1024
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| 57 | #endif
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| 58 |
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| 59 | // connect timeout in seconds
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| 60 | #define CONNECT_TIMEOUT 10
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| 61 |
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| 62 | typedef enum IO_STATE_TAG
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| 63 | {
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| 64 | IO_STATE_CLOSED,
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| 65 | IO_STATE_OPENING,
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| 66 | IO_STATE_OPEN,
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| 67 | IO_STATE_CLOSING,
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| 68 | IO_STATE_ERROR
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| 69 | } IO_STATE;
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| 70 |
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| 71 | typedef struct PENDING_SOCKET_IO_TAG
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| 72 | {
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| 73 | unsigned char* bytes;
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| 74 | size_t size;
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| 75 | ON_SEND_COMPLETE on_send_complete;
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| 76 | void* callback_context;
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| 77 | SINGLYLINKEDLIST_HANDLE pending_io_list;
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| 78 | } PENDING_SOCKET_IO;
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| 79 |
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| 80 | typedef struct SOCKET_IO_INSTANCE_TAG
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| 81 | {
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| 82 | int socket;
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| 83 | SOCKETIO_ADDRESS_TYPE address_type;
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| 84 | ON_BYTES_RECEIVED on_bytes_received;
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| 85 | ON_IO_ERROR on_io_error;
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| 86 | ON_IO_OPEN_COMPLETE on_io_open_complete;
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| 87 | void* on_bytes_received_context;
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| 88 | void* on_io_error_context;
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| 89 | void* on_io_open_complete_context;
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| 90 | char* hostname;
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| 91 | int port;
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| 92 | char* target_mac_address;
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| 93 | IO_STATE io_state;
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| 94 | SINGLYLINKEDLIST_HANDLE pending_io_list;
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| 95 | unsigned char recv_bytes[RECEIVE_BYTES_VALUE];
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| 96 | DNSRESOLVER_HANDLE dns_resolver;
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| 97 | } SOCKET_IO_INSTANCE;
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| 98 |
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| 99 | typedef struct NETWORK_INTERFACE_DESCRIPTION_TAG
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| 100 | {
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| 101 | char* name;
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| 102 | char* mac_address;
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| 103 | char* ip_address;
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| 104 | struct NETWORK_INTERFACE_DESCRIPTION_TAG* next;
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| 105 | } NETWORK_INTERFACE_DESCRIPTION;
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| 106 |
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| 107 | /*this function will clone an option given by name and value*/
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| 108 | static void* socketio_CloneOption(const char* name, const void* value)
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| 109 | {
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| 110 | void* result;
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| 111 |
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| 112 | if (name != NULL)
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| 113 | {
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| 114 | result = NULL;
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| 115 |
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| 116 | if (strcmp(name, OPTION_NET_INT_MAC_ADDRESS) == 0)
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| 117 | {
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| 118 | if (value == NULL)
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| 119 | {
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| 120 | LogError("Failed cloning option %s (value is NULL)", name);
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| 121 | }
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| 122 | else
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| 123 | {
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| 124 | if ((result = malloc(sizeof(char) * (strlen((char*)value) + 1))) == NULL)
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| 125 | {
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| 126 | LogError("Failed cloning option %s (malloc failed)", name);
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| 127 | }
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| 128 | else if (strcpy((char*)result, (char*)value) == NULL)
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| 129 | {
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| 130 | LogError("Failed cloning option %s (strcpy failed)", name);
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| 131 | free(result);
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| 132 | result = NULL;
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| 133 | }
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| 134 | }
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| 135 | }
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| 136 | else
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| 137 | {
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| 138 | LogError("Cannot clone option %s (not suppported)", name);
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| 139 | }
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| 140 | }
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| 141 | else
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| 142 | {
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| 143 | result = NULL;
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| 144 | }
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| 145 | return result;
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| 146 | }
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| 147 |
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| 148 | /*this function destroys an option previously created*/
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| 149 | static void socketio_DestroyOption(const char* name, const void* value)
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| 150 | {
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| 151 | if (name != NULL)
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| 152 | {
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| 153 | if (strcmp(name, OPTION_NET_INT_MAC_ADDRESS) == 0 && value != NULL)
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| 154 | {
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| 155 | free((void*)value);
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| 156 | }
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| 157 | }
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| 158 | }
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| 159 |
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| 160 | static OPTIONHANDLER_HANDLE socketio_retrieveoptions(CONCRETE_IO_HANDLE handle)
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| 161 | {
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| 162 | OPTIONHANDLER_HANDLE result;
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| 163 |
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| 164 | if (handle == NULL)
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| 165 | {
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| 166 | LogError("failed retrieving options (handle is NULL)");
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| 167 | result = NULL;
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| 168 | }
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| 169 | else
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| 170 | {
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| 171 | SOCKET_IO_INSTANCE* socket_io_instance = (SOCKET_IO_INSTANCE*)handle;
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| 172 |
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| 173 | result = OptionHandler_Create(socketio_CloneOption, socketio_DestroyOption, socketio_setoption);
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| 174 | if (result == NULL)
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| 175 | {
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| 176 | LogError("unable to OptionHandler_Create");
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| 177 | }
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| 178 | else if (socket_io_instance->target_mac_address != NULL &&
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| 179 | OptionHandler_AddOption(result, OPTION_NET_INT_MAC_ADDRESS, socket_io_instance->target_mac_address) != OPTIONHANDLER_OK)
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| 180 | {
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| 181 | LogError("failed retrieving options (failed adding net_interface_mac_address)");
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| 182 | OptionHandler_Destroy(result);
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| 183 | result = NULL;
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| 184 | }
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| 185 | }
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| 186 |
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| 187 | return result;
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| 188 | }
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| 189 |
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| 190 | static const IO_INTERFACE_DESCRIPTION socket_io_interface_description =
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| 191 | {
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| 192 | socketio_retrieveoptions,
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| 193 | socketio_create,
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| 194 | socketio_destroy,
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| 195 | socketio_open,
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| 196 | socketio_close,
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| 197 | socketio_send,
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| 198 | socketio_dowork,
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| 199 | socketio_setoption
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| 200 | };
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| 201 |
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| 202 | static void indicate_error(SOCKET_IO_INSTANCE* socket_io_instance)
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| 203 | {
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| 204 | socket_io_instance->io_state = IO_STATE_ERROR;
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| 205 | if (socket_io_instance->on_io_error != NULL)
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| 206 | {
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| 207 | socket_io_instance->on_io_error(socket_io_instance->on_io_error_context);
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| 208 | }
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| 209 | }
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| 210 |
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| 211 | static int add_pending_io(SOCKET_IO_INSTANCE* socket_io_instance, const unsigned char* buffer, size_t size, ON_SEND_COMPLETE on_send_complete, void* callback_context)
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| 212 | {
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| 213 | int result;
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| 214 | PENDING_SOCKET_IO* pending_socket_io = (PENDING_SOCKET_IO*)malloc(sizeof(PENDING_SOCKET_IO));
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| 215 | if (pending_socket_io == NULL)
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| 216 | {
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| 217 | result = MU_FAILURE;
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| 218 | }
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| 219 | else
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| 220 | {
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| 221 | pending_socket_io->bytes = (unsigned char*)malloc(size);
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| 222 | if (pending_socket_io->bytes == NULL)
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| 223 | {
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| 224 | LogError("Allocation Failure: Unable to allocate pending list.");
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| 225 | free(pending_socket_io);
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| 226 | result = MU_FAILURE;
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| 227 | }
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| 228 | else
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| 229 | {
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| 230 | pending_socket_io->size = size;
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| 231 | pending_socket_io->on_send_complete = on_send_complete;
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| 232 | pending_socket_io->callback_context = callback_context;
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| 233 | pending_socket_io->pending_io_list = socket_io_instance->pending_io_list;
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| 234 | (void)memcpy(pending_socket_io->bytes, buffer, size);
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| 235 |
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| 236 | if (singlylinkedlist_add(socket_io_instance->pending_io_list, pending_socket_io) == NULL)
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| 237 | {
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| 238 | LogError("Failure: Unable to add socket to pending list.");
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| 239 | free(pending_socket_io->bytes);
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| 240 | free(pending_socket_io);
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| 241 | result = MU_FAILURE;
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| 242 | }
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| 243 | else
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| 244 | {
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| 245 | result = 0;
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| 246 | }
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| 247 | }
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| 248 | }
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| 249 | return result;
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| 250 | }
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| 251 |
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| 252 | static STATIC_VAR_UNUSED void signal_callback(int signum)
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| 253 | {
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| 254 | AZURE_UNREFERENCED_PARAMETER(signum);
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| 255 | LogError("Socket received signal %d.", signum);
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| 256 | }
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| 257 |
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| 258 | static int lookup_address(SOCKET_IO_INSTANCE* socket_io_instance)
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| 259 | {
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| 260 | int result = 0;
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| 261 |
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| 262 | if (socket_io_instance->address_type == ADDRESS_TYPE_IP)
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| 263 | {
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| 264 | if (!dns_resolver_is_lookup_complete(socket_io_instance->dns_resolver))
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| 265 | {
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| 266 | socket_io_instance->io_state = IO_STATE_OPENING;
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| 267 | }
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| 268 | else
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| 269 | {
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| 270 | socket_io_instance->io_state = IO_STATE_OPEN;
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| 271 | }
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| 272 | }
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| 273 | else //ADDRESS_TYPE_DOMAIN_SOCKET
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| 274 | {
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| 275 | socket_io_instance->io_state = IO_STATE_OPEN;
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| 276 | }
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| 277 |
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| 278 | return result;
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| 279 | }
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| 280 |
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| 281 | static int initiate_socket_connection(SOCKET_IO_INSTANCE* socket_io_instance)
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| 282 | {
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| 283 | int result;
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| 284 | int flags;
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| 285 | struct addrinfo* addr = NULL;
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| 286 | struct sockaddr* connect_addr = NULL;
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| 287 | struct sockaddr_un addrInfoUn;
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| 288 | socklen_t connect_addr_len;
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| 289 |
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| 290 | if (socket_io_instance->address_type == ADDRESS_TYPE_IP)
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| 291 | {
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| 292 | if(!dns_resolver_is_lookup_complete(socket_io_instance->dns_resolver))
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| 293 | {
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| 294 | LogError("DNS did not resolve IP address");
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| 295 | result = MU_FAILURE;
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| 296 | }
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| 297 | else
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| 298 | {
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| 299 | addr = dns_resolver_get_addrInfo(socket_io_instance->dns_resolver);
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| 300 |
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| 301 | if (addr == NULL)
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| 302 | {
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| 303 | LogError("DNS resolution failed");
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| 304 | result = MU_FAILURE;
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| 305 | }
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| 306 | else
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| 307 | {
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| 308 | connect_addr = addr->ai_addr;
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| 309 | connect_addr_len = sizeof(*addr->ai_addr);
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| 310 | result = 0;
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| 311 | }
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| 312 | }
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| 313 | }
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| 314 | else
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| 315 | {
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| 316 | size_t hostname_len = strlen(socket_io_instance->hostname);
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| 317 | if (hostname_len + 1 > sizeof(addrInfoUn.sun_path))
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| 318 | {
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| 319 | LogError("Hostname %s is too long for a unix socket (max len = %lu)", socket_io_instance->hostname, (unsigned long)sizeof(addrInfoUn.sun_path));
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| 320 | result = MU_FAILURE;
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| 321 | }
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| 322 | else
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| 323 | {
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| 324 | memset(&addrInfoUn, 0, sizeof(addrInfoUn));
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| 325 | addrInfoUn.sun_family = AF_UNIX;
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| 326 | // No need to add NULL terminator due to the above memset
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| 327 | (void)memcpy(addrInfoUn.sun_path, socket_io_instance->hostname, hostname_len);
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| 328 |
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| 329 | connect_addr = (struct sockaddr*)&addrInfoUn;
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| 330 | connect_addr_len = sizeof(addrInfoUn);
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| 331 | result = 0;
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| 332 | }
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| 333 | }
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| 334 |
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| 335 | if (result == 0)
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| 336 | {
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| 337 | if ((-1 == (flags = fcntl(socket_io_instance->socket, F_GETFL, 0))) ||
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| 338 | (fcntl(socket_io_instance->socket, F_SETFL, flags | O_NONBLOCK) == -1))
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| 339 | {
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| 340 | LogError("Failure: fcntl failure.");
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| 341 | result = MU_FAILURE;
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| 342 | }
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| 343 | else
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| 344 | {
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| 345 | result = connect(socket_io_instance->socket, connect_addr, connect_addr_len);
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| 346 | if ((result != 0) && (errno != EINPROGRESS))
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| 347 | {
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| 348 | LogError("Failure: connect failure %d.", errno);
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| 349 | result = MU_FAILURE;
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| 350 | }
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| 351 | else
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| 352 | {
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| 353 | // Async connect will return -1.
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| 354 | result = 0;
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| 355 | if (socket_io_instance->on_io_open_complete != NULL)
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| 356 | {
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| 357 | socket_io_instance->on_io_open_complete(socket_io_instance->on_io_open_complete_context, IO_OPEN_OK /*: IO_OPEN_ERROR*/);
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| 358 | }
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| 359 | }
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| 360 | }
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| 361 | }
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| 362 |
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| 363 | return result;
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| 364 | }
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| 365 |
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| 366 | static int lookup_address_and_initiate_socket_connection(SOCKET_IO_INSTANCE* socket_io_instance)
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| 367 | {
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| 368 | int result;
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| 369 |
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| 370 | result = lookup_address(socket_io_instance);
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| 371 |
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| 372 | if(socket_io_instance->io_state == IO_STATE_OPEN)
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| 373 | {
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| 374 | if (result == 0)
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| 375 | {
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| 376 | result = initiate_socket_connection(socket_io_instance);
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| 377 | }
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| 378 | }
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| 379 |
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| 380 | return result;
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| 381 | }
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| 382 |
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| 383 | static int wait_for_connection(SOCKET_IO_INSTANCE* socket_io_instance)
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| 384 | {
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| 385 | int result;
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| 386 | int err;
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| 387 | int retval;
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| 388 | int select_errno = 0;
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| 389 |
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| 390 | fd_set fdset;
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| 391 | struct timeval tv;
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| 392 |
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| 393 | FD_ZERO(&fdset);
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| 394 | FD_SET(socket_io_instance->socket, &fdset);
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| 395 | tv.tv_sec = CONNECT_TIMEOUT;
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| 396 | tv.tv_usec = 0;
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| 397 |
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| 398 | do
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| 399 | {
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| 400 | retval = select(socket_io_instance->socket + 1, NULL, &fdset, NULL, &tv);
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| 401 |
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| 402 | if (retval < 0)
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| 403 | {
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| 404 | select_errno = errno;
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| 405 | }
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| 406 | } while (retval < 0 && select_errno == EINTR);
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| 407 |
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| 408 | if (retval != 1)
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| 409 | {
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| 410 | LogError("Failure: select failure.");
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| 411 | result = MU_FAILURE;
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| 412 | }
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| 413 | else
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| 414 | {
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| 415 | int so_error = 0;
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| 416 | socklen_t len = sizeof(so_error);
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| 417 | err = getsockopt(socket_io_instance->socket, SOL_SOCKET, SO_ERROR, &so_error, &len);
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| 418 | if (err != 0)
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| 419 | {
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| 420 | LogError("Failure: getsockopt failure %d.", errno);
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| 421 | result = MU_FAILURE;
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| 422 | }
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| 423 | else if (so_error != 0)
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| 424 | {
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| 425 | err = so_error;
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| 426 | LogError("Failure: connect failure %d.", so_error);
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| 427 | result = MU_FAILURE;
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| 428 | }
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| 429 | else
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| 430 | {
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| 431 | result = 0;
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| 432 | }
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| 433 | }
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| 434 |
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| 435 | return result;
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| 436 | }
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| 437 |
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| 438 |
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| 439 |
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| 440 | #ifndef __APPLE__
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| 441 | static void destroy_network_interface_descriptions(NETWORK_INTERFACE_DESCRIPTION* nid)
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| 442 | {
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| 443 | if (nid != NULL)
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| 444 | {
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| 445 | if (nid->next != NULL)
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| 446 | {
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| 447 | destroy_network_interface_descriptions(nid->next);
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| 448 | }
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| 449 |
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| 450 | if (nid->name != NULL)
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| 451 | {
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| 452 | free(nid->name);
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| 453 | }
|
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| 454 |
|
---|
| 455 | if (nid->mac_address != NULL)
|
---|
| 456 | {
|
---|
| 457 | free(nid->mac_address);
|
---|
| 458 | }
|
---|
| 459 |
|
---|
| 460 | if (nid->ip_address != NULL)
|
---|
| 461 | {
|
---|
| 462 | free(nid->ip_address);
|
---|
| 463 | }
|
---|
| 464 |
|
---|
| 465 | free(nid);
|
---|
| 466 | }
|
---|
| 467 | }
|
---|
| 468 |
|
---|
| 469 | static NETWORK_INTERFACE_DESCRIPTION* create_network_interface_description(struct ifreq *ifr, NETWORK_INTERFACE_DESCRIPTION* previous_nid)
|
---|
| 470 | {
|
---|
| 471 | NETWORK_INTERFACE_DESCRIPTION* result;
|
---|
| 472 |
|
---|
| 473 | if ((result = (NETWORK_INTERFACE_DESCRIPTION*)malloc(sizeof(NETWORK_INTERFACE_DESCRIPTION))) == NULL)
|
---|
| 474 | {
|
---|
| 475 | LogError("Failed allocating NETWORK_INTERFACE_DESCRIPTION");
|
---|
| 476 | }
|
---|
| 477 | else if ((result->name = (char*)malloc(sizeof(char) * (strlen(ifr->ifr_name) + 1))) == NULL)
|
---|
| 478 | {
|
---|
| 479 | LogError("failed setting interface description name (malloc failed)");
|
---|
| 480 | destroy_network_interface_descriptions(result);
|
---|
| 481 | result = NULL;
|
---|
| 482 | }
|
---|
| 483 | else if (strcpy(result->name, ifr->ifr_name) == NULL)
|
---|
| 484 | {
|
---|
| 485 | LogError("failed setting interface description name (strcpy failed)");
|
---|
| 486 | destroy_network_interface_descriptions(result);
|
---|
| 487 | result = NULL;
|
---|
| 488 | }
|
---|
| 489 | else
|
---|
| 490 | {
|
---|
| 491 | char* ip_address;
|
---|
| 492 | unsigned char* mac = (unsigned char*)ifr->ifr_hwaddr.sa_data;
|
---|
| 493 |
|
---|
| 494 | if ((result->mac_address = (char*)malloc(sizeof(char) * MAC_ADDRESS_STRING_LENGTH)) == NULL)
|
---|
| 495 | {
|
---|
| 496 | LogError("failed formatting mac address (malloc failed)");
|
---|
| 497 | destroy_network_interface_descriptions(result);
|
---|
| 498 | result = NULL;
|
---|
| 499 | }
|
---|
| 500 | else if (sprintf(result->mac_address, "%02X:%02X:%02X:%02X:%02X:%02X", mac[0],mac[1],mac[2],mac[3],mac[4],mac[5]) <= 0)
|
---|
| 501 | {
|
---|
| 502 | LogError("failed formatting mac address (sprintf failed)");
|
---|
| 503 | destroy_network_interface_descriptions(result);
|
---|
| 504 | result = NULL;
|
---|
| 505 | }
|
---|
| 506 | else if ((ip_address = inet_ntoa(((struct sockaddr_in*)&ifr->ifr_addr)->sin_addr)) == NULL)
|
---|
| 507 | {
|
---|
| 508 | LogError("failed setting the ip address (inet_ntoa failed)");
|
---|
| 509 | destroy_network_interface_descriptions(result);
|
---|
| 510 | result = NULL;
|
---|
| 511 | }
|
---|
| 512 | else if ((result->ip_address = (char*)malloc(sizeof(char) * (strlen(ip_address) + 1))) == NULL)
|
---|
| 513 | {
|
---|
| 514 | LogError("failed setting the ip address (malloc failed)");
|
---|
| 515 | destroy_network_interface_descriptions(result);
|
---|
| 516 | result = NULL;
|
---|
| 517 | }
|
---|
| 518 | else if (strcpy(result->ip_address, ip_address) == NULL)
|
---|
| 519 | {
|
---|
| 520 | LogError("failed setting the ip address (strcpy failed)");
|
---|
| 521 | destroy_network_interface_descriptions(result);
|
---|
| 522 | result = NULL;
|
---|
| 523 | }
|
---|
| 524 | else
|
---|
| 525 | {
|
---|
| 526 | result->next = NULL;
|
---|
| 527 |
|
---|
| 528 | if (previous_nid != NULL)
|
---|
| 529 | {
|
---|
| 530 | previous_nid->next = result;
|
---|
| 531 | }
|
---|
| 532 | }
|
---|
| 533 | }
|
---|
| 534 |
|
---|
| 535 | return result;
|
---|
| 536 | }
|
---|
| 537 |
|
---|
| 538 | static int get_network_interface_descriptions(int socket, NETWORK_INTERFACE_DESCRIPTION** nid)
|
---|
| 539 | {
|
---|
| 540 | int result;
|
---|
| 541 |
|
---|
| 542 | struct ifreq ifr;
|
---|
| 543 | struct ifconf ifc;
|
---|
| 544 | char buf[IFREQ_BUFFER_SIZE];
|
---|
| 545 |
|
---|
| 546 | ifc.ifc_len = sizeof(buf);
|
---|
| 547 | ifc.ifc_buf = buf;
|
---|
| 548 |
|
---|
| 549 | if (ioctl(socket, SIOCGIFCONF, &ifc) == -1)
|
---|
| 550 | {
|
---|
| 551 | LogError("ioctl failed querying socket (SIOCGIFCONF, errno=%d)", errno);
|
---|
| 552 | result = MU_FAILURE;
|
---|
| 553 | }
|
---|
| 554 | else
|
---|
| 555 | {
|
---|
| 556 | NETWORK_INTERFACE_DESCRIPTION* root_nid = NULL;
|
---|
| 557 | NETWORK_INTERFACE_DESCRIPTION* new_nid = NULL;
|
---|
| 558 |
|
---|
| 559 | struct ifreq* it = ifc.ifc_req;
|
---|
| 560 | const struct ifreq* const end = it + (ifc.ifc_len / sizeof(struct ifreq));
|
---|
| 561 |
|
---|
| 562 | result = 0;
|
---|
| 563 |
|
---|
| 564 | for (; it != end; ++it)
|
---|
| 565 | {
|
---|
| 566 | strcpy(ifr.ifr_name, it->ifr_name);
|
---|
| 567 |
|
---|
| 568 | if (ioctl(socket, SIOCGIFFLAGS, &ifr) != 0)
|
---|
| 569 | {
|
---|
| 570 | LogError("ioctl failed querying socket (SIOCGIFFLAGS, errno=%d)", errno);
|
---|
| 571 | result = MU_FAILURE;
|
---|
| 572 | break;
|
---|
| 573 | }
|
---|
| 574 | else if (ioctl(socket, SIOCGIFHWADDR, &ifr) != 0)
|
---|
| 575 | {
|
---|
| 576 | LogError("ioctl failed querying socket (SIOCGIFHWADDR, errno=%d)", errno);
|
---|
| 577 | result = MU_FAILURE;
|
---|
| 578 | break;
|
---|
| 579 | }
|
---|
| 580 | else if (ioctl(socket, SIOCGIFADDR, &ifr) != 0)
|
---|
| 581 | {
|
---|
| 582 | LogError("ioctl failed querying socket (SIOCGIFADDR, errno=%d)", errno);
|
---|
| 583 | result = MU_FAILURE;
|
---|
| 584 | break;
|
---|
| 585 | }
|
---|
| 586 | else if ((new_nid = create_network_interface_description(&ifr, new_nid)) == NULL)
|
---|
| 587 | {
|
---|
| 588 | LogError("Failed creating network interface description");
|
---|
| 589 | result = MU_FAILURE;
|
---|
| 590 | break;
|
---|
| 591 | }
|
---|
| 592 | else if (root_nid == NULL)
|
---|
| 593 | {
|
---|
| 594 | root_nid = new_nid;
|
---|
| 595 | }
|
---|
| 596 | }
|
---|
| 597 |
|
---|
| 598 | if (result == 0)
|
---|
| 599 | {
|
---|
| 600 | *nid = root_nid;
|
---|
| 601 | }
|
---|
| 602 | else
|
---|
| 603 | {
|
---|
| 604 | destroy_network_interface_descriptions(root_nid);
|
---|
| 605 | }
|
---|
| 606 | }
|
---|
| 607 |
|
---|
| 608 | return result;
|
---|
| 609 | }
|
---|
| 610 |
|
---|
| 611 | static int set_target_network_interface(int socket, char* mac_address)
|
---|
| 612 | {
|
---|
| 613 | int result;
|
---|
| 614 | NETWORK_INTERFACE_DESCRIPTION* nid;
|
---|
| 615 |
|
---|
| 616 | if (get_network_interface_descriptions(socket, &nid) != 0)
|
---|
| 617 | {
|
---|
| 618 | LogError("Failed getting network interface descriptions");
|
---|
| 619 | result = MU_FAILURE;
|
---|
| 620 | }
|
---|
| 621 | else
|
---|
| 622 | {
|
---|
| 623 | NETWORK_INTERFACE_DESCRIPTION* current_nid = nid;
|
---|
| 624 |
|
---|
| 625 | while(current_nid != NULL)
|
---|
| 626 | {
|
---|
| 627 | if (strcmp(mac_address, current_nid->mac_address) == 0)
|
---|
| 628 | {
|
---|
| 629 | break;
|
---|
| 630 | }
|
---|
| 631 |
|
---|
| 632 | current_nid = current_nid->next;
|
---|
| 633 | }
|
---|
| 634 |
|
---|
| 635 | if (current_nid == NULL)
|
---|
| 636 | {
|
---|
| 637 | LogError("Did not find a network interface matching MAC ADDRESS");
|
---|
| 638 | result = MU_FAILURE;
|
---|
| 639 | }
|
---|
| 640 | else if (setsockopt(socket, SOL_SOCKET, SO_BINDTODEVICE, current_nid->name, strlen(current_nid->name)) != 0)
|
---|
| 641 | {
|
---|
| 642 | LogError("setsockopt failed (%d)", errno);
|
---|
| 643 | result = MU_FAILURE;
|
---|
| 644 | }
|
---|
| 645 | else
|
---|
| 646 | {
|
---|
| 647 | result = 0;
|
---|
| 648 | }
|
---|
| 649 |
|
---|
| 650 | destroy_network_interface_descriptions(nid);
|
---|
| 651 | }
|
---|
| 652 |
|
---|
| 653 | return result;
|
---|
| 654 | }
|
---|
| 655 | #endif //__APPLE__
|
---|
| 656 |
|
---|
| 657 | static void destroy_socket_io_instance(SOCKET_IO_INSTANCE* instance)
|
---|
| 658 | {
|
---|
| 659 | if (instance->dns_resolver != NULL)
|
---|
| 660 | {
|
---|
| 661 | dns_resolver_destroy(instance->dns_resolver);
|
---|
| 662 | }
|
---|
| 663 |
|
---|
| 664 | free(instance->hostname);
|
---|
| 665 | free(instance->target_mac_address);
|
---|
| 666 |
|
---|
| 667 | if (instance->pending_io_list != NULL)
|
---|
| 668 | {
|
---|
| 669 | singlylinkedlist_destroy(instance->pending_io_list);
|
---|
| 670 | }
|
---|
| 671 |
|
---|
| 672 | free(instance);
|
---|
| 673 | }
|
---|
| 674 |
|
---|
| 675 | CONCRETE_IO_HANDLE socketio_create(void* io_create_parameters)
|
---|
| 676 | {
|
---|
| 677 | SOCKETIO_CONFIG* socket_io_config = io_create_parameters;
|
---|
| 678 | SOCKET_IO_INSTANCE* result;
|
---|
| 679 |
|
---|
| 680 | if (socket_io_config == NULL)
|
---|
| 681 | {
|
---|
| 682 | LogError("Invalid argument: socket_io_config is NULL");
|
---|
| 683 | result = NULL;
|
---|
| 684 | }
|
---|
| 685 | else
|
---|
| 686 | {
|
---|
| 687 | result = malloc(sizeof(SOCKET_IO_INSTANCE));
|
---|
| 688 | if (result != NULL)
|
---|
| 689 | {
|
---|
| 690 | (void)memset(result, 0, sizeof(SOCKET_IO_INSTANCE));
|
---|
| 691 |
|
---|
| 692 | result->address_type = ADDRESS_TYPE_IP;
|
---|
| 693 | result->pending_io_list = singlylinkedlist_create();
|
---|
| 694 | if (result->pending_io_list == NULL)
|
---|
| 695 | {
|
---|
| 696 | LogError("Failure: singlylinkedlist_create unable to create pending list.");
|
---|
| 697 | destroy_socket_io_instance(result);
|
---|
| 698 | result = NULL;
|
---|
| 699 | }
|
---|
| 700 | else
|
---|
| 701 | {
|
---|
| 702 | if (socket_io_config->hostname != NULL)
|
---|
| 703 | {
|
---|
| 704 | result->hostname = (char*)malloc(strlen(socket_io_config->hostname) + 1);
|
---|
| 705 | if (result->hostname != NULL)
|
---|
| 706 | {
|
---|
| 707 | (void)strcpy(result->hostname, socket_io_config->hostname);
|
---|
| 708 | }
|
---|
| 709 |
|
---|
| 710 | result->socket = INVALID_SOCKET;
|
---|
| 711 | }
|
---|
| 712 | else
|
---|
| 713 | {
|
---|
| 714 | result->hostname = NULL;
|
---|
| 715 | result->socket = *((int*)socket_io_config->accepted_socket);
|
---|
| 716 | }
|
---|
| 717 |
|
---|
| 718 | if ((result->hostname == NULL) && (result->socket == INVALID_SOCKET))
|
---|
| 719 | {
|
---|
| 720 | LogError("Failure: hostname == NULL and socket is invalid.");
|
---|
| 721 | destroy_socket_io_instance(result);
|
---|
| 722 | result = NULL;
|
---|
| 723 | }
|
---|
| 724 | else
|
---|
| 725 | {
|
---|
| 726 | result->port = socket_io_config->port;
|
---|
| 727 | result->on_io_open_complete = NULL;
|
---|
| 728 | result->dns_resolver = dns_resolver_create(result->hostname, socket_io_config->port, NULL);
|
---|
| 729 | result->target_mac_address = NULL;
|
---|
| 730 | result->on_bytes_received = NULL;
|
---|
| 731 | result->on_io_error = NULL;
|
---|
| 732 | result->on_bytes_received_context = NULL;
|
---|
| 733 | result->on_io_error_context = NULL;
|
---|
| 734 | result->io_state = IO_STATE_CLOSED;
|
---|
| 735 | }
|
---|
| 736 | }
|
---|
| 737 | }
|
---|
| 738 | else
|
---|
| 739 | {
|
---|
| 740 | LogError("Allocation Failure: SOCKET_IO_INSTANCE");
|
---|
| 741 | }
|
---|
| 742 | }
|
---|
| 743 |
|
---|
| 744 | return result;
|
---|
| 745 | }
|
---|
| 746 |
|
---|
| 747 | void socketio_destroy(CONCRETE_IO_HANDLE socket_io)
|
---|
| 748 | {
|
---|
| 749 | if (socket_io != NULL)
|
---|
| 750 | {
|
---|
| 751 | SOCKET_IO_INSTANCE* socket_io_instance = (SOCKET_IO_INSTANCE*)socket_io;
|
---|
| 752 | /* we cannot do much if the close fails, so just ignore the result */
|
---|
| 753 | if (socket_io_instance->socket != INVALID_SOCKET)
|
---|
| 754 | {
|
---|
| 755 | close(socket_io_instance->socket);
|
---|
| 756 | }
|
---|
| 757 |
|
---|
| 758 | /* clear allpending IOs */
|
---|
| 759 | LIST_ITEM_HANDLE first_pending_io = singlylinkedlist_get_head_item(socket_io_instance->pending_io_list);
|
---|
| 760 | while (first_pending_io != NULL)
|
---|
| 761 | {
|
---|
| 762 | PENDING_SOCKET_IO* pending_socket_io = (PENDING_SOCKET_IO*)singlylinkedlist_item_get_value(first_pending_io);
|
---|
| 763 | if (pending_socket_io != NULL)
|
---|
| 764 | {
|
---|
| 765 | free(pending_socket_io->bytes);
|
---|
| 766 | free(pending_socket_io);
|
---|
| 767 | }
|
---|
| 768 |
|
---|
| 769 | (void)singlylinkedlist_remove(socket_io_instance->pending_io_list, first_pending_io);
|
---|
| 770 | first_pending_io = singlylinkedlist_get_head_item(socket_io_instance->pending_io_list);
|
---|
| 771 | }
|
---|
| 772 |
|
---|
| 773 | destroy_socket_io_instance(socket_io_instance);
|
---|
| 774 | }
|
---|
| 775 | }
|
---|
| 776 |
|
---|
| 777 | int socketio_open(CONCRETE_IO_HANDLE socket_io, ON_IO_OPEN_COMPLETE on_io_open_complete, void* on_io_open_complete_context, ON_BYTES_RECEIVED on_bytes_received, void* on_bytes_received_context, ON_IO_ERROR on_io_error, void* on_io_error_context)
|
---|
| 778 | {
|
---|
| 779 | int result;
|
---|
| 780 |
|
---|
| 781 | SOCKET_IO_INSTANCE* socket_io_instance = (SOCKET_IO_INSTANCE*)socket_io;
|
---|
| 782 | if (socket_io == NULL)
|
---|
| 783 | {
|
---|
| 784 | LogError("Invalid argument: SOCKET_IO_INSTANCE is NULL");
|
---|
| 785 | result = MU_FAILURE;
|
---|
| 786 | }
|
---|
| 787 | else
|
---|
| 788 | {
|
---|
| 789 | if (socket_io_instance->io_state != IO_STATE_CLOSED)
|
---|
| 790 | {
|
---|
| 791 | LogError("Failure: socket state is not closed.");
|
---|
| 792 | result = MU_FAILURE;
|
---|
| 793 | }
|
---|
| 794 | else if (socket_io_instance->socket != INVALID_SOCKET)
|
---|
| 795 | {
|
---|
| 796 | // Opening an accepted socket
|
---|
| 797 | socket_io_instance->on_bytes_received_context = on_bytes_received_context;
|
---|
| 798 | socket_io_instance->on_bytes_received = on_bytes_received;
|
---|
| 799 | socket_io_instance->on_io_error = on_io_error;
|
---|
| 800 | socket_io_instance->on_io_error_context = on_io_error_context;
|
---|
| 801 |
|
---|
| 802 | socket_io_instance->io_state = IO_STATE_OPEN;
|
---|
| 803 |
|
---|
| 804 | result = 0;
|
---|
| 805 | }
|
---|
| 806 | else
|
---|
| 807 | {
|
---|
| 808 | socket_io_instance->socket = socket (socket_io_instance->address_type == ADDRESS_TYPE_IP ? AF_INET : AF_UNIX, SOCK_STREAM, 0);
|
---|
| 809 | if (socket_io_instance->socket < SOCKET_SUCCESS)
|
---|
| 810 | {
|
---|
| 811 | LogError("Failure: socket create failure %d.", socket_io_instance->socket);
|
---|
| 812 | result = MU_FAILURE;
|
---|
| 813 | }
|
---|
| 814 | #ifndef __APPLE__
|
---|
| 815 | else if (socket_io_instance->target_mac_address != NULL &&
|
---|
| 816 | set_target_network_interface(socket_io_instance->socket, socket_io_instance->target_mac_address) != 0)
|
---|
| 817 | {
|
---|
| 818 | LogError("Failure: failed selecting target network interface (MACADDR=%s).", socket_io_instance->target_mac_address);
|
---|
| 819 | result = MU_FAILURE;
|
---|
| 820 | }
|
---|
| 821 | #endif //__APPLE__
|
---|
| 822 | else if ((result = lookup_address_and_initiate_socket_connection(socket_io_instance)) != 0)
|
---|
| 823 | {
|
---|
| 824 | LogError("lookup_address_and_connect_socket failed");
|
---|
| 825 | }
|
---|
| 826 | else if ((result = wait_for_connection(socket_io_instance)) != 0)
|
---|
| 827 | {
|
---|
| 828 | LogError("wait_for_connection failed");
|
---|
| 829 | }
|
---|
| 830 |
|
---|
| 831 | if (result == 0)
|
---|
| 832 | {
|
---|
| 833 | socket_io_instance->on_bytes_received = on_bytes_received;
|
---|
| 834 | socket_io_instance->on_bytes_received_context = on_bytes_received_context;
|
---|
| 835 |
|
---|
| 836 | socket_io_instance->on_io_error = on_io_error;
|
---|
| 837 | socket_io_instance->on_io_error_context = on_io_error_context;
|
---|
| 838 |
|
---|
| 839 | socket_io_instance->on_io_open_complete = on_io_open_complete;
|
---|
| 840 | socket_io_instance->on_io_open_complete_context = on_io_open_complete_context;
|
---|
| 841 | }
|
---|
| 842 | else
|
---|
| 843 | {
|
---|
| 844 | if (socket_io_instance->socket >= SOCKET_SUCCESS)
|
---|
| 845 | {
|
---|
| 846 | close(socket_io_instance->socket);
|
---|
| 847 | }
|
---|
| 848 | socket_io_instance->socket = INVALID_SOCKET;
|
---|
| 849 | }
|
---|
| 850 | }
|
---|
| 851 | }
|
---|
| 852 |
|
---|
| 853 | if (socket_io_instance->io_state != IO_STATE_OPENING)
|
---|
| 854 | {
|
---|
| 855 | if (on_io_open_complete != NULL)
|
---|
| 856 | {
|
---|
| 857 | on_io_open_complete(on_io_open_complete_context, result == 0 ? IO_OPEN_OK : IO_OPEN_ERROR);
|
---|
| 858 | }
|
---|
| 859 | }
|
---|
| 860 |
|
---|
| 861 | return result;
|
---|
| 862 | }
|
---|
| 863 |
|
---|
| 864 | int socketio_close(CONCRETE_IO_HANDLE socket_io, ON_IO_CLOSE_COMPLETE on_io_close_complete, void* callback_context)
|
---|
| 865 | {
|
---|
| 866 | int result = 0;
|
---|
| 867 |
|
---|
| 868 | if (socket_io == NULL)
|
---|
| 869 | {
|
---|
| 870 | result = MU_FAILURE;
|
---|
| 871 | }
|
---|
| 872 | else
|
---|
| 873 | {
|
---|
| 874 | SOCKET_IO_INSTANCE* socket_io_instance = (SOCKET_IO_INSTANCE*)socket_io;
|
---|
| 875 | if ((socket_io_instance->io_state != IO_STATE_CLOSED) && (socket_io_instance->io_state != IO_STATE_CLOSING))
|
---|
| 876 | {
|
---|
| 877 | // Only close if the socket isn't already in the closed or closing state
|
---|
| 878 | (void)shutdown(socket_io_instance->socket, SHUT_RDWR);
|
---|
| 879 | close(socket_io_instance->socket);
|
---|
| 880 | socket_io_instance->socket = INVALID_SOCKET;
|
---|
| 881 | socket_io_instance->io_state = IO_STATE_CLOSED;
|
---|
| 882 | }
|
---|
| 883 |
|
---|
| 884 | if (on_io_close_complete != NULL)
|
---|
| 885 | {
|
---|
| 886 | on_io_close_complete(callback_context);
|
---|
| 887 | }
|
---|
| 888 |
|
---|
| 889 | result = 0;
|
---|
| 890 | }
|
---|
| 891 |
|
---|
| 892 | return result;
|
---|
| 893 | }
|
---|
| 894 |
|
---|
| 895 | int socketio_send(CONCRETE_IO_HANDLE socket_io, const void* buffer, size_t size, ON_SEND_COMPLETE on_send_complete, void* callback_context)
|
---|
| 896 | {
|
---|
| 897 | int result;
|
---|
| 898 |
|
---|
| 899 | if ((socket_io == NULL) ||
|
---|
| 900 | (buffer == NULL) ||
|
---|
| 901 | (size == 0))
|
---|
| 902 | {
|
---|
| 903 | /* Invalid arguments */
|
---|
| 904 | LogError("Invalid argument: send given invalid parameter");
|
---|
| 905 | result = MU_FAILURE;
|
---|
| 906 | }
|
---|
| 907 | else
|
---|
| 908 | {
|
---|
| 909 | SOCKET_IO_INSTANCE* socket_io_instance = (SOCKET_IO_INSTANCE*)socket_io;
|
---|
| 910 | if (socket_io_instance->io_state != IO_STATE_OPEN)
|
---|
| 911 | {
|
---|
| 912 | LogError("Failure: socket state is not opened.");
|
---|
| 913 | result = MU_FAILURE;
|
---|
| 914 | }
|
---|
| 915 | else
|
---|
| 916 | {
|
---|
| 917 | LIST_ITEM_HANDLE first_pending_io = singlylinkedlist_get_head_item(socket_io_instance->pending_io_list);
|
---|
| 918 | if (first_pending_io != NULL)
|
---|
| 919 | {
|
---|
| 920 | if (add_pending_io(socket_io_instance, buffer, size, on_send_complete, callback_context) != 0)
|
---|
| 921 | {
|
---|
| 922 | LogError("Failure: add_pending_io failed.");
|
---|
| 923 | result = MU_FAILURE;
|
---|
| 924 | }
|
---|
| 925 | else
|
---|
| 926 | {
|
---|
| 927 | result = 0;
|
---|
| 928 | }
|
---|
| 929 | }
|
---|
| 930 | else
|
---|
| 931 | {
|
---|
| 932 | signal(SIGPIPE, SIG_IGN);
|
---|
| 933 |
|
---|
| 934 | ssize_t send_result = send(socket_io_instance->socket, buffer, size, 0);
|
---|
| 935 | if ((size_t)send_result != size)
|
---|
| 936 | {
|
---|
| 937 | if (send_result == SOCKET_SEND_FAILURE && errno != EAGAIN)
|
---|
| 938 | {
|
---|
| 939 | LogError("Failure: sending socket failed. errno=%d (%s).", errno, strerror(errno));
|
---|
| 940 | result = MU_FAILURE;
|
---|
| 941 | }
|
---|
| 942 | else
|
---|
| 943 | {
|
---|
| 944 | /*send says "come back later" with EAGAIN - likely the socket buffer cannot accept more data*/
|
---|
| 945 | /* queue data */
|
---|
| 946 | size_t bytes_sent = (send_result < 0 ? 0 : send_result);
|
---|
| 947 |
|
---|
| 948 | if (add_pending_io(socket_io_instance, buffer + bytes_sent, size - bytes_sent, on_send_complete, callback_context) != 0)
|
---|
| 949 | {
|
---|
| 950 | LogError("Failure: add_pending_io failed.");
|
---|
| 951 | result = MU_FAILURE;
|
---|
| 952 | }
|
---|
| 953 | else
|
---|
| 954 | {
|
---|
| 955 | result = 0;
|
---|
| 956 | }
|
---|
| 957 | }
|
---|
| 958 | }
|
---|
| 959 | else
|
---|
| 960 | {
|
---|
| 961 | if (on_send_complete != NULL)
|
---|
| 962 | {
|
---|
| 963 | on_send_complete(callback_context, IO_SEND_OK);
|
---|
| 964 | }
|
---|
| 965 |
|
---|
| 966 | result = 0;
|
---|
| 967 | }
|
---|
| 968 | }
|
---|
| 969 | }
|
---|
| 970 | }
|
---|
| 971 |
|
---|
| 972 | return result;
|
---|
| 973 | }
|
---|
| 974 |
|
---|
| 975 | void socketio_dowork(CONCRETE_IO_HANDLE socket_io)
|
---|
| 976 | {
|
---|
| 977 | if (socket_io != NULL)
|
---|
| 978 | {
|
---|
| 979 | SOCKET_IO_INSTANCE* socket_io_instance = (SOCKET_IO_INSTANCE*)socket_io;
|
---|
| 980 | signal(SIGPIPE, SIG_IGN);
|
---|
| 981 |
|
---|
| 982 | if (socket_io_instance->io_state == IO_STATE_OPEN)
|
---|
| 983 | {
|
---|
| 984 | LIST_ITEM_HANDLE first_pending_io = singlylinkedlist_get_head_item(socket_io_instance->pending_io_list);
|
---|
| 985 | while (first_pending_io != NULL)
|
---|
| 986 | {
|
---|
| 987 | PENDING_SOCKET_IO* pending_socket_io = (PENDING_SOCKET_IO*)singlylinkedlist_item_get_value(first_pending_io);
|
---|
| 988 | if (pending_socket_io == NULL)
|
---|
| 989 | {
|
---|
| 990 | indicate_error(socket_io_instance);
|
---|
| 991 | LogError("Failure: retrieving socket from list");
|
---|
| 992 | break;
|
---|
| 993 | }
|
---|
| 994 |
|
---|
| 995 | ssize_t send_result = send(socket_io_instance->socket, pending_socket_io->bytes, pending_socket_io->size, 0);
|
---|
| 996 | if ((send_result < 0) || ((size_t)send_result != pending_socket_io->size))
|
---|
| 997 | {
|
---|
| 998 | if (send_result == INVALID_SOCKET)
|
---|
| 999 | {
|
---|
| 1000 | if (errno == EAGAIN) /*send says "come back later" with EAGAIN - likely the socket buffer cannot accept more data*/
|
---|
| 1001 | {
|
---|
| 1002 | /*do nothing until next dowork */
|
---|
| 1003 | break;
|
---|
| 1004 | }
|
---|
| 1005 | else
|
---|
| 1006 | {
|
---|
| 1007 | free(pending_socket_io->bytes);
|
---|
| 1008 | free(pending_socket_io);
|
---|
| 1009 | (void)singlylinkedlist_remove(socket_io_instance->pending_io_list, first_pending_io);
|
---|
| 1010 |
|
---|
| 1011 | LogError("Failure: sending Socket information. errno=%d (%s).", errno, strerror(errno));
|
---|
| 1012 | indicate_error(socket_io_instance);
|
---|
| 1013 | }
|
---|
| 1014 | }
|
---|
| 1015 | else
|
---|
| 1016 | {
|
---|
| 1017 | /* simply wait until next dowork */
|
---|
| 1018 | (void)memmove(pending_socket_io->bytes, pending_socket_io->bytes + send_result, pending_socket_io->size - send_result);
|
---|
| 1019 | pending_socket_io->size -= send_result;
|
---|
| 1020 | break;
|
---|
| 1021 | }
|
---|
| 1022 | }
|
---|
| 1023 | else
|
---|
| 1024 | {
|
---|
| 1025 | if (pending_socket_io->on_send_complete != NULL)
|
---|
| 1026 | {
|
---|
| 1027 | pending_socket_io->on_send_complete(pending_socket_io->callback_context, IO_SEND_OK);
|
---|
| 1028 | }
|
---|
| 1029 |
|
---|
| 1030 | free(pending_socket_io->bytes);
|
---|
| 1031 | free(pending_socket_io);
|
---|
| 1032 | if (singlylinkedlist_remove(socket_io_instance->pending_io_list, first_pending_io) != 0)
|
---|
| 1033 | {
|
---|
| 1034 | indicate_error(socket_io_instance);
|
---|
| 1035 | LogError("Failure: unable to remove socket from list");
|
---|
| 1036 | }
|
---|
| 1037 | }
|
---|
| 1038 |
|
---|
| 1039 | first_pending_io = singlylinkedlist_get_head_item(socket_io_instance->pending_io_list);
|
---|
| 1040 | }
|
---|
| 1041 |
|
---|
| 1042 | if (socket_io_instance->io_state == IO_STATE_OPEN)
|
---|
| 1043 | {
|
---|
| 1044 | ssize_t received = 0;
|
---|
| 1045 | do
|
---|
| 1046 | {
|
---|
| 1047 | received = recv(socket_io_instance->socket, socket_io_instance->recv_bytes, RECEIVE_BYTES_VALUE, 0);
|
---|
| 1048 | if (received > 0)
|
---|
| 1049 | {
|
---|
| 1050 | if (socket_io_instance->on_bytes_received != NULL)
|
---|
| 1051 | {
|
---|
| 1052 | /* Explicitly ignoring here the result of the callback */
|
---|
| 1053 | (void)socket_io_instance->on_bytes_received(socket_io_instance->on_bytes_received_context, socket_io_instance->recv_bytes, received);
|
---|
| 1054 | }
|
---|
| 1055 | }
|
---|
| 1056 | else if (received == 0)
|
---|
| 1057 | {
|
---|
| 1058 | // Do not log error here due to this is probably the socket being closed on the other end
|
---|
| 1059 | indicate_error(socket_io_instance);
|
---|
| 1060 | }
|
---|
| 1061 | else if (received < 0 && errno != EAGAIN)
|
---|
| 1062 | {
|
---|
| 1063 | LogError("Socketio_Failure: Receiving data from endpoint: errno=%d.", errno);
|
---|
| 1064 | indicate_error(socket_io_instance);
|
---|
| 1065 | }
|
---|
| 1066 |
|
---|
| 1067 | } while (received > 0 && socket_io_instance->io_state == IO_STATE_OPEN);
|
---|
| 1068 | }
|
---|
| 1069 | }
|
---|
| 1070 | else
|
---|
| 1071 | {
|
---|
| 1072 | if (socket_io_instance->io_state == IO_STATE_OPENING)
|
---|
| 1073 | {
|
---|
| 1074 | if(lookup_address(socket_io_instance) != 0)
|
---|
| 1075 | {
|
---|
| 1076 | LogError("Socketio_Failure: lookup address failed");
|
---|
| 1077 | indicate_error(socket_io_instance);
|
---|
| 1078 | }
|
---|
| 1079 | else
|
---|
| 1080 | {
|
---|
| 1081 | if(socket_io_instance->io_state == IO_STATE_OPEN)
|
---|
| 1082 | {
|
---|
| 1083 | initiate_socket_connection(socket_io_instance);
|
---|
| 1084 | }
|
---|
| 1085 | }
|
---|
| 1086 |
|
---|
| 1087 | }
|
---|
| 1088 | }
|
---|
| 1089 | }
|
---|
| 1090 | }
|
---|
| 1091 |
|
---|
| 1092 | // Edison is missing this from netinet/tcp.h, but this code still works if we manually define it.
|
---|
| 1093 | #ifndef SOL_TCP
|
---|
| 1094 | #define SOL_TCP 6
|
---|
| 1095 | #endif
|
---|
| 1096 |
|
---|
| 1097 | #ifndef __APPLE__
|
---|
| 1098 | static void strtoup(char* str)
|
---|
| 1099 | {
|
---|
| 1100 | if (str != NULL)
|
---|
| 1101 | {
|
---|
| 1102 | while (*str != '\0')
|
---|
| 1103 | {
|
---|
| 1104 | if (isalpha((int)*str) && islower((int)*str))
|
---|
| 1105 | {
|
---|
| 1106 | *str = (char)toupper((int)*str);
|
---|
| 1107 | }
|
---|
| 1108 | str++;
|
---|
| 1109 | }
|
---|
| 1110 | }
|
---|
| 1111 | }
|
---|
| 1112 | #endif // __APPLE__
|
---|
| 1113 |
|
---|
| 1114 | static int socketio_setaddresstype_option(SOCKET_IO_INSTANCE* socket_io_instance, const char* addressType)
|
---|
| 1115 | {
|
---|
| 1116 | int result;
|
---|
| 1117 |
|
---|
| 1118 | if (socket_io_instance->io_state != IO_STATE_CLOSED)
|
---|
| 1119 | {
|
---|
| 1120 | LogError("Socket's type can only be changed when in state 'IO_STATE_CLOSED'. Current state=%d", socket_io_instance->io_state);
|
---|
| 1121 | result = MU_FAILURE;
|
---|
| 1122 | }
|
---|
| 1123 | else if (strcmp(addressType, OPTION_ADDRESS_TYPE_DOMAIN_SOCKET) == 0)
|
---|
| 1124 | {
|
---|
| 1125 | socket_io_instance->address_type = ADDRESS_TYPE_DOMAIN_SOCKET;
|
---|
| 1126 | result = 0;
|
---|
| 1127 | }
|
---|
| 1128 | else if (strcmp(addressType, OPTION_ADDRESS_TYPE_IP_SOCKET) == 0)
|
---|
| 1129 | {
|
---|
| 1130 | socket_io_instance->address_type = ADDRESS_TYPE_IP;
|
---|
| 1131 | result = 0;
|
---|
| 1132 | }
|
---|
| 1133 | else
|
---|
| 1134 | {
|
---|
| 1135 | LogError("Address type %s is not supported", addressType);
|
---|
| 1136 | result = MU_FAILURE;
|
---|
| 1137 | }
|
---|
| 1138 |
|
---|
| 1139 | return result;
|
---|
| 1140 | }
|
---|
| 1141 |
|
---|
| 1142 | int socketio_setoption(CONCRETE_IO_HANDLE socket_io, const char* optionName, const void* value)
|
---|
| 1143 | {
|
---|
| 1144 | int result;
|
---|
| 1145 |
|
---|
| 1146 | if (socket_io == NULL ||
|
---|
| 1147 | optionName == NULL ||
|
---|
| 1148 | value == NULL)
|
---|
| 1149 | {
|
---|
| 1150 | result = MU_FAILURE;
|
---|
| 1151 | }
|
---|
| 1152 | else
|
---|
| 1153 | {
|
---|
| 1154 | SOCKET_IO_INSTANCE* socket_io_instance = (SOCKET_IO_INSTANCE*)socket_io;
|
---|
| 1155 |
|
---|
| 1156 | if (strcmp(optionName, "tcp_keepalive") == 0)
|
---|
| 1157 | {
|
---|
| 1158 | result = setsockopt(socket_io_instance->socket, SOL_SOCKET, SO_KEEPALIVE, value, sizeof(int));
|
---|
| 1159 | if (result == -1) result = errno;
|
---|
| 1160 | }
|
---|
| 1161 | else if (strcmp(optionName, "tcp_keepalive_time") == 0)
|
---|
| 1162 | {
|
---|
| 1163 | #ifdef __APPLE__
|
---|
| 1164 | result = setsockopt(socket_io_instance->socket, IPPROTO_TCP, TCP_KEEPALIVE, value, sizeof(int));
|
---|
| 1165 | #else
|
---|
| 1166 | result = setsockopt(socket_io_instance->socket, SOL_TCP, TCP_KEEPIDLE, value, sizeof(int));
|
---|
| 1167 | #endif
|
---|
| 1168 | if (result == -1) result = errno;
|
---|
| 1169 | }
|
---|
| 1170 | else if (strcmp(optionName, "tcp_keepalive_interval") == 0)
|
---|
| 1171 | {
|
---|
| 1172 | result = setsockopt(socket_io_instance->socket, SOL_TCP, TCP_KEEPINTVL, value, sizeof(int));
|
---|
| 1173 | if (result == -1) result = errno;
|
---|
| 1174 | }
|
---|
| 1175 | else if (strcmp(optionName, OPTION_NET_INT_MAC_ADDRESS) == 0)
|
---|
| 1176 | {
|
---|
| 1177 | #ifdef __APPLE__
|
---|
| 1178 | LogError("option not supported.");
|
---|
| 1179 | result = MU_FAILURE;
|
---|
| 1180 | #else
|
---|
| 1181 | if (strlen(value) == 0)
|
---|
| 1182 | {
|
---|
| 1183 | LogError("option value must be a valid mac address");
|
---|
| 1184 | result = MU_FAILURE;
|
---|
| 1185 | }
|
---|
| 1186 | else if ((socket_io_instance->target_mac_address = (char*)malloc(sizeof(char) * (strlen(value) + 1))) == NULL)
|
---|
| 1187 | {
|
---|
| 1188 | LogError("failed setting net_interface_mac_address option (malloc failed)");
|
---|
| 1189 | result = MU_FAILURE;
|
---|
| 1190 | }
|
---|
| 1191 | else if (strcpy(socket_io_instance->target_mac_address, value) == NULL)
|
---|
| 1192 | {
|
---|
| 1193 | LogError("failed setting net_interface_mac_address option (strcpy failed)");
|
---|
| 1194 | free(socket_io_instance->target_mac_address);
|
---|
| 1195 | socket_io_instance->target_mac_address = NULL;
|
---|
| 1196 | result = MU_FAILURE;
|
---|
| 1197 | }
|
---|
| 1198 | else
|
---|
| 1199 | {
|
---|
| 1200 | strtoup(socket_io_instance->target_mac_address);
|
---|
| 1201 | result = 0;
|
---|
| 1202 | }
|
---|
| 1203 | #endif
|
---|
| 1204 | }
|
---|
| 1205 | else if (strcmp(optionName, OPTION_ADDRESS_TYPE) == 0)
|
---|
| 1206 | {
|
---|
| 1207 | result = socketio_setaddresstype_option(socket_io_instance, (const char*)value);
|
---|
| 1208 | }
|
---|
| 1209 | else
|
---|
| 1210 | {
|
---|
| 1211 | result = MU_FAILURE;
|
---|
| 1212 | }
|
---|
| 1213 | }
|
---|
| 1214 |
|
---|
| 1215 | return result;
|
---|
| 1216 | }
|
---|
| 1217 |
|
---|
| 1218 | const IO_INTERFACE_DESCRIPTION* socketio_get_interface_description(void)
|
---|
| 1219 | {
|
---|
| 1220 | return &socket_io_interface_description;
|
---|
| 1221 | }
|
---|
| 1222 |
|
---|