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Rev | Author | Line No. | Line |
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2871 | svoboda | 1 | /** @addtogroup sctrace |
2 | * @{ |
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3 | */ |
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4 | /** @file |
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5 | */ |
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6 | |||
7 | #include <stdio.h> |
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2873 | svoboda | 8 | #include <stdlib.h> |
9 | #include <libadt/hash_table.h> |
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2871 | svoboda | 10 | |
11 | #include "ipc_desc.h" |
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2874 | svoboda | 12 | #include "ipcp.h" |
2871 | svoboda | 13 | |
2877 | svoboda | 14 | #define IPCP_CALLID_SYNC 0 |
15 | |||
2873 | svoboda | 16 | typedef struct { |
2874 | svoboda | 17 | int phone_hash; |
18 | ipc_call_t question; |
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19 | |||
20 | int call_hash; |
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21 | |||
22 | link_t link; |
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23 | } pending_call_t; |
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24 | |||
25 | typedef struct { |
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2873 | svoboda | 26 | int server; |
27 | proto_t *proto; |
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28 | } connection_t; |
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29 | |||
30 | #define MAX_PHONE 64 |
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31 | connection_t connections[MAX_PHONE]; |
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32 | int have_conn[MAX_PHONE]; |
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33 | |||
34 | #define PCALL_TABLE_CHAINS 32 |
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35 | hash_table_t pending_calls; |
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36 | |||
37 | hash_index_t pending_call_hash(unsigned long key[]) |
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2871 | svoboda | 38 | { |
2877 | svoboda | 39 | // printf("pending_call_hash\n"); |
2873 | svoboda | 40 | return key[0] % PCALL_TABLE_CHAINS; |
41 | } |
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42 | |||
2877 | svoboda | 43 | int pending_call_compare(unsigned long key[], hash_count_t keys, |
44 | link_t *item) |
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2873 | svoboda | 45 | { |
46 | pending_call_t *hs; |
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47 | |||
2877 | svoboda | 48 | // printf("pending_call_compare\n"); |
2873 | svoboda | 49 | hs = hash_table_get_instance(item, pending_call_t, link); |
50 | |||
51 | return key[0] == hs->call_hash; |
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52 | } |
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53 | |||
54 | void pending_call_remove_callback(link_t *item) |
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55 | { |
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2877 | svoboda | 56 | // printf("pending_call_remove_callback\n"); |
2873 | svoboda | 57 | } |
58 | |||
59 | hash_table_operations_t pending_call_ops = { |
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60 | .hash = pending_call_hash, |
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61 | .compare = pending_call_compare, |
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62 | .remove_callback = pending_call_remove_callback |
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63 | }; |
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64 | |||
65 | static void connection_set(int phone, int server, proto_t *proto) |
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66 | { |
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67 | if (phone <0 || phone >= MAX_PHONE) return; |
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68 | connections[phone].server = server; |
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69 | connections[phone].proto = proto; |
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70 | have_conn[phone] = 1; |
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71 | } |
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72 | |||
73 | static void connection_clear(int phone) |
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74 | { |
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75 | have_conn[phone] = 0; |
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76 | connections[phone].server = 0; |
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77 | connections[phone].proto = NULL; |
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78 | } |
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79 | |||
80 | static void ipc_m_print(ipcarg_t method) |
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81 | { |
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2872 | svoboda | 82 | ipc_m_desc_t *desc; |
83 | |||
84 | /* FIXME: too slow */ |
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85 | desc = ipc_methods; |
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86 | while (desc->number != 0) { |
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87 | if (desc->number == method) { |
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88 | printf("%s (%d)", desc->name, method); |
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89 | return; |
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90 | } |
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91 | |||
92 | ++desc; |
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93 | } |
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94 | |||
95 | printf("%d", method); |
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96 | } |
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97 | |||
2873 | svoboda | 98 | void ipcp_init(void) |
99 | { |
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100 | hash_table_create(&pending_calls, PCALL_TABLE_CHAINS, 1, &pending_call_ops); |
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101 | } |
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102 | |||
103 | void ipcp_cleanup(void) |
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104 | { |
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105 | hash_table_destroy(&pending_calls); |
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106 | } |
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107 | |||
2874 | svoboda | 108 | void ipcp_call_out(int phone, ipc_call_t *call, ipc_callid_t hash) |
2872 | svoboda | 109 | { |
2873 | svoboda | 110 | pending_call_t *pcall; |
2877 | svoboda | 111 | char *proto_name; |
2873 | svoboda | 112 | |
2877 | svoboda | 113 | if (have_conn[phone]) proto_name = connections[phone].proto->name; |
114 | else proto_name = "n/a"; |
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115 | |||
2874 | svoboda | 116 | // printf("ipcp_call_out()\n"); |
2877 | svoboda | 117 | printf("call id: 0x%x, phone: %d, proto: %s, method: ", hash, phone, |
118 | proto_name); |
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2872 | svoboda | 119 | ipc_m_print(IPC_GET_METHOD(*call)); |
120 | printf(" args: (%u, %u, %u, %u, %u)\n", |
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2871 | svoboda | 121 | IPC_GET_ARG1(*call), |
122 | IPC_GET_ARG2(*call), |
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123 | IPC_GET_ARG3(*call), |
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124 | IPC_GET_ARG4(*call), |
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125 | IPC_GET_ARG5(*call) |
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126 | ); |
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2873 | svoboda | 127 | |
128 | /* Store call in hash table for response matching */ |
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129 | |||
130 | pcall = malloc(sizeof(pending_call_t)); |
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131 | pcall->phone_hash = phone; |
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132 | pcall->question = *call; |
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133 | pcall->call_hash = hash; |
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134 | |||
135 | hash_table_insert(&pending_calls, &pcall->call_hash, &pcall->link); |
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2871 | svoboda | 136 | } |
137 | |||
2877 | svoboda | 138 | static void parse_answer(pending_call_t *pcall, ipc_call_t *answer) |
139 | { |
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140 | int phone; |
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141 | ipcarg_t method; |
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142 | int retval; |
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143 | static proto_t proto = { .name = "unknown" }; |
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144 | int cphone; |
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145 | |||
146 | // printf("parse_answer\n"); |
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147 | |||
148 | phone = pcall->phone_hash; |
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149 | method = IPC_GET_METHOD(pcall->question); |
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150 | retval = IPC_GET_RETVAL(*answer); |
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151 | printf("phone=%d, method=%d, retval=%d\n", |
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152 | phone, method, retval); |
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153 | |||
154 | if (phone == 0 && method == IPC_M_CONNECT_ME_TO && retval == 0) { |
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155 | /* Connected to a service (through NS) */ |
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156 | cphone = IPC_GET_ARG5(*answer); |
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157 | printf("registering connection (phone %d)\n", cphone); |
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158 | connection_set(cphone, 0, &proto); |
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159 | } else { |
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160 | printf("unrecognized connection\n"); |
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161 | } |
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162 | } |
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163 | |||
2874 | svoboda | 164 | void ipcp_call_in(ipc_call_t *call, ipc_callid_t hash) |
2871 | svoboda | 165 | { |
2873 | svoboda | 166 | link_t *item; |
167 | pending_call_t *pcall; |
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168 | |||
2874 | svoboda | 169 | // printf("ipcp_call_in()\n"); |
2872 | svoboda | 170 | /* printf("phone: %d, method: ", call->in_phone_hash); |
171 | ipc_m_print(IPC_GET_METHOD(*call)); |
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172 | printf(" args: (%u, %u, %u, %u, %u)\n", |
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2871 | svoboda | 173 | IPC_GET_ARG1(*call), |
174 | IPC_GET_ARG2(*call), |
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175 | IPC_GET_ARG3(*call), |
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176 | IPC_GET_ARG4(*call), |
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177 | IPC_GET_ARG5(*call) |
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2872 | svoboda | 178 | );*/ |
2873 | svoboda | 179 | |
2877 | svoboda | 180 | if ((hash & IPC_CALLID_ANSWERED) == 0 && hash != IPCP_CALLID_SYNC) { |
2873 | svoboda | 181 | /* Not a response */ |
2877 | svoboda | 182 | printf("Not a response (hash %d)\n", hash); |
2873 | svoboda | 183 | return; |
184 | } |
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185 | |||
186 | hash = hash & ~IPC_CALLID_ANSWERED; |
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187 | |||
188 | item = hash_table_find(&pending_calls, &hash); |
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189 | if (item == NULL) return; // No matching question found |
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190 | |||
191 | pcall = hash_table_get_instance(item, pending_call_t, link); |
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192 | |||
193 | printf("response matched to question\n"); |
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194 | hash_table_remove(&pending_calls, &hash, 1); |
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2877 | svoboda | 195 | |
196 | parse_answer(pcall, call); |
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197 | free(pcall); |
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2871 | svoboda | 198 | } |
199 | |||
2874 | svoboda | 200 | void ipcp_call_sync(int phone, ipc_call_t *call, ipc_call_t *answer) |
2872 | svoboda | 201 | { |
2877 | svoboda | 202 | ipcp_call_out(phone, call, IPCP_CALLID_SYNC); |
203 | ipcp_call_in(answer, IPCP_CALLID_SYNC); |
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2872 | svoboda | 204 | } |
2871 | svoboda | 205 | |
2874 | svoboda | 206 | void ipcp_hangup(int phone, int rc) |
2872 | svoboda | 207 | { |
208 | printf("hangup phone %d -> %d\n", phone, rc); |
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2877 | svoboda | 209 | connection_clear(phone); |
2872 | svoboda | 210 | } |
211 | |||
2871 | svoboda | 212 | /** @} |
213 | */ |