1 | // =============================================================== // |
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2 | // // |
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3 | // File : adcomm.cxx // |
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4 | // Purpose : // |
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5 | // // |
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6 | // Institute of Microbiology (Technical University Munich) // |
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7 | // http://www.arb-home.de/ // |
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8 | // // |
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9 | // =============================================================== // |
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10 | |
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11 | #include <unistd.h> |
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12 | |
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13 | #include <csignal> |
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14 | #include <cerrno> |
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15 | |
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16 | #include <sys/socket.h> |
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17 | |
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18 | #include <netinet/in.h> |
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19 | #include <netinet/tcp.h> |
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20 | |
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21 | #include "gb_key.h" |
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22 | #include "gb_comm.h" |
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23 | #include "gb_localdata.h" |
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24 | |
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25 | #include <SigHandler.h> |
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26 | #include <arb_signal.h> |
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27 | #include <arb_file.h> |
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28 | |
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29 | static GBCM_ServerResult gbcms_talking(int con, long *hs, void *sin); |
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30 | |
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31 | |
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32 | #define FD_SET_TYPE |
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33 | |
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34 | #define debug_printf(a, b) |
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35 | |
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36 | #define GBCMS_TRANSACTION_TIMEOUT 60*60 // one hour timeout |
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37 | #define MAX_QUEUE_LEN 5 |
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38 | |
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39 | #define GBCM_COMMAND_UNFOLD (GBTUM_MAGIC_NUMBER) |
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40 | #define GBCM_COMMAND_GET_UPDATA (GBTUM_MAGIC_NUMBER+1) |
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41 | #define GBCM_COMMAND_PUT_UPDATE (GBTUM_MAGIC_NUMBER+2) |
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42 | #define GBCM_COMMAND_UPDATED (GBTUM_MAGIC_NUMBER+3) |
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43 | #define GBCM_COMMAND_BEGIN_TRANSACTION (GBTUM_MAGIC_NUMBER+4) |
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44 | #define GBCM_COMMAND_COMMIT_TRANSACTION (GBTUM_MAGIC_NUMBER+5) |
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45 | #define GBCM_COMMAND_ABORT_TRANSACTION (GBTUM_MAGIC_NUMBER+6) |
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46 | #define GBCM_COMMAND_INIT_TRANSACTION (GBTUM_MAGIC_NUMBER+7) |
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47 | #define GBCM_COMMAND_FIND (GBTUM_MAGIC_NUMBER+8) |
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48 | #define GBCM_COMMAND_CLOSE (GBTUM_MAGIC_NUMBER+9) |
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49 | #define GBCM_COMMAND_KEY_ALLOC (GBTUM_MAGIC_NUMBER+11) |
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50 | #define GBCM_COMMAND_UNDO (GBTUM_MAGIC_NUMBER+12) |
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51 | #define GBCM_COMMAND_DONT_WAIT (GBTUM_MAGIC_NUMBER+13) |
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52 | |
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53 | #define GBCM_COMMAND_SEND (GBTUM_MAGIC_NUMBER+0x1000) |
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54 | #define GBCM_COMMAND_SEND_COUNT (GBTUM_MAGIC_NUMBER+0x2000) |
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55 | #define GBCM_COMMAND_SETDEEP (GBTUM_MAGIC_NUMBER+0x3000) |
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56 | #define GBCM_COMMAND_SETINDEX (GBTUM_MAGIC_NUMBER+0x4000) |
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57 | #define GBCM_COMMAND_PUT_UPDATE_KEYS (GBTUM_MAGIC_NUMBER+0x5000) |
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58 | #define GBCM_COMMAND_PUT_UPDATE_CREATE (GBTUM_MAGIC_NUMBER+0x6000) |
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59 | #define GBCM_COMMAND_PUT_UPDATE_DELETE (GBTUM_MAGIC_NUMBER+0x7000) |
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60 | #define GBCM_COMMAND_PUT_UPDATE_UPDATE (GBTUM_MAGIC_NUMBER+0x8000) |
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61 | #define GBCM_COMMAND_PUT_UPDATE_END (GBTUM_MAGIC_NUMBER+0x9000) |
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62 | #define GBCM_COMMAND_TRANSACTION_RETURN (GBTUM_MAGIC_NUMBER+0x100000) |
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63 | #define GBCM_COMMAND_FIND_ERG (GBTUM_MAGIC_NUMBER+0x108000) |
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64 | #define GBCM_COMMAND_KEY_ALLOC_RES (GBTUM_MAGIC_NUMBER+0x10b000) |
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65 | #define GBCM_COMMAND_UNDO_CMD (GBTUM_MAGIC_NUMBER+0x10a0001) |
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66 | |
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67 | // ------------------------ |
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68 | // some structures |
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69 | |
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70 | struct gbcms_delete_list { // Store all deleted items in a list |
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71 | gbcms_delete_list *next; |
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72 | long creation_date; |
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73 | long update_date; |
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74 | GBDATA *gbd; |
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75 | }; |
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76 | |
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77 | struct Socinf { |
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78 | Socinf *next; |
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79 | int socket; |
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80 | gbcms_delete_list *dl; // point to last deleted item that is sent to this client |
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81 | char *username; |
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82 | }; |
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83 | |
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84 | static void g_bcms_delete_Socinf(Socinf *THIS) { |
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85 | freenull(THIS->username); |
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86 | THIS->next = 0; |
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87 | free(THIS); |
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88 | } |
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89 | |
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90 | struct gb_server_data { |
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91 | int hso; |
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92 | char *unix_name; |
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93 | Socinf *soci; |
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94 | long nsoc; |
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95 | long timeout; |
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96 | GBDATA *gb_main; |
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97 | int wait_for_new_request; |
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98 | gbcms_delete_list *del_first; // All deleted items, that are yet unknown to at least one client |
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99 | gbcms_delete_list *del_last; |
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100 | }; |
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101 | |
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102 | |
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103 | |
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104 | struct gbcms_create { |
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105 | gbcms_create *next; |
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106 | GBDATA *server_id; |
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107 | GBDATA *client_id; |
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108 | }; |
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109 | |
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110 | |
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111 | // -------------------- |
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112 | // Panic save |
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113 | |
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114 | static GBCONTAINER *gbcms_gb_main; |
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115 | |
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116 | static void gbcms_sighup(int) { |
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117 | char *panic_file = 0; // hang-up trigger file |
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118 | char *db_panic = 0; // file to save DB to |
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119 | { |
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120 | const char *ap = GB_getenv("ARB_PID"); |
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121 | if (!ap) ap = ""; |
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122 | |
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123 | FILE *in = GB_fopen_tempfile(GBS_global_string("arb_panic_%s_%s", GB_getenvUSER(), ap), "rt", &panic_file); |
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124 | |
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125 | fprintf(stderr, |
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126 | "**** ARB DATABASE SERVER received a HANGUP SIGNAL ****\n" |
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127 | "- Looking for file '%s'\n", |
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128 | panic_file); |
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129 | |
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130 | db_panic = GB_read_fp(in); |
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131 | fclose(in); |
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132 | } |
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133 | |
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134 | if (!db_panic) { |
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135 | fprintf(stderr, |
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136 | "- Could not read '%s' (Reason: %s)\n" |
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137 | "[maybe retry]\n", |
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138 | panic_file, GB_await_error()); |
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139 | } |
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140 | else { |
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141 | char *newline = strchr(db_panic, '\n'); |
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142 | if (newline) newline[0] = 0; |
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143 | |
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144 | fprintf(stderr, "- Trying to save DATABASE in ASCII mode into file '%s'\n", db_panic); |
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145 | |
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146 | GB_ERROR error = GBCONTAINER_MAIN(gbcms_gb_main)->panic_save(db_panic); |
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147 | |
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148 | if (error) fprintf(stderr, "Error while saving '%s': %s\n", db_panic, error); |
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149 | else fprintf(stderr, "- DATABASE saved into '%s' (ASCII)\n", db_panic); |
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150 | |
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151 | unlink(panic_file); |
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152 | free(db_panic); |
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153 | } |
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154 | } |
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155 | |
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156 | GB_ERROR GB_MAIN_TYPE::panic_save(const char *db_panic) { |
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157 | const int org_transaction_level = transaction_level; |
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158 | |
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159 | transaction_level = 0; |
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160 | GB_ERROR error = save_as(db_panic, "a"); |
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161 | transaction_level = org_transaction_level; |
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162 | |
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163 | return error; |
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164 | } |
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165 | |
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166 | GB_ERROR GBCMS_open(const char *path, long timeout, GBDATA *gb_main) { |
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167 | // server open |
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168 | |
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169 | GB_MAIN_TYPE *Main = GB_MAIN(gb_main); |
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170 | GB_ERROR error = 0; |
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171 | |
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172 | if (Main->server_data) { |
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173 | error = "reopen of server not allowed"; |
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174 | } |
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175 | else { |
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176 | gbcmc_comm *comm = gbcmc_open(path); |
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177 | if (comm) { |
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178 | error = GBS_global_string("Socket '%s' already in use", path); |
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179 | gbcmc_close(comm); |
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180 | } |
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181 | else { |
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182 | int socket; |
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183 | char *unix_name; |
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184 | |
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185 | error = gbcm_open_socket(path, TCP_NODELAY, 0, &socket, &unix_name); |
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186 | if (!error) { |
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187 | ASSERT_RESULT_PREDICATE(is_default_or_ignore_sighandler, INSTALL_SIGHANDLER(SIGPIPE, gbcms_sigpipe, "GBCMS_open")); |
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188 | ASSERT_RESULT(SigHandler, SIG_DFL, INSTALL_SIGHANDLER(SIGHUP, gbcms_sighup, "GBCMS_open")); |
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189 | |
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190 | gbcms_gb_main = gb_main->as_container(); |
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191 | |
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192 | if (listen(socket, MAX_QUEUE_LEN) < 0) { |
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193 | error = GBS_global_string("could not listen (server; errno=%i)", errno); |
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194 | } |
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195 | else { |
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196 | gb_server_data *hs = (gb_server_data *)GB_calloc(sizeof(gb_server_data), 1); |
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197 | |
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198 | hs->timeout = timeout; |
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199 | hs->gb_main = gb_main; |
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200 | hs->hso = socket; |
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201 | hs->unix_name = unix_name; |
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202 | |
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203 | Main->server_data = hs; |
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204 | } |
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205 | } |
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206 | } |
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207 | } |
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208 | |
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209 | if (error) { |
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210 | error = GBS_global_string("ARB_DB_SERVER_ERROR: %s", error); |
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211 | fprintf(stderr, "%s\n", error); |
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212 | } |
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213 | return error; |
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214 | } |
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215 | |
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216 | void GBCMS_shutdown(GBDATA *gbd) { |
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217 | // server close |
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218 | |
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219 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
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220 | if (Main->server_data) { |
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221 | gb_server_data *hs = Main->server_data; |
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222 | Socinf *si; |
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223 | |
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224 | for (si=hs->soci; si; si=si->next) { |
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225 | shutdown(si->socket, SHUT_RDWR); |
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226 | close(si->socket); |
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227 | } |
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228 | shutdown(hs->hso, SHUT_RDWR); |
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229 | |
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230 | if (hs->unix_name) { |
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231 | unlink(hs->unix_name); |
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232 | freenull(hs->unix_name); |
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233 | } |
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234 | close(hs->hso); |
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235 | freenull(Main->server_data); |
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236 | } |
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237 | } |
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238 | |
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239 | #if defined(WARN_TODO) |
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240 | #warning rewrite gbcm_write_bin (error handling - do not export) |
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241 | #endif |
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242 | |
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243 | template<typename T> |
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244 | inline void write_into_comm_buffer(long& buffer, T& t) { |
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245 | STATIC_ASSERT(sizeof(t) <= sizeof(long)); |
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246 | |
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247 | buffer = 0; // initialize (avoid to write uninitialized byte to avoid valgrind errors) |
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248 | *(T*)(&buffer) = t; |
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249 | } |
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250 | |
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251 | static GB_ERROR gbcm_write_bin(int socket, GBDATA *gbd, long *buffer, long mode, long deep, int send_headera) { |
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252 | /* send a database item to client/server |
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253 | * |
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254 | * mode =1 server |
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255 | * =0 client |
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256 | * buffer = buffer |
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257 | * deep = 0 -> just send one item >0 send sub entries too |
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258 | * send_headera = 1 -> if type = GB_DB send flag and key_quark array |
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259 | */ |
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260 | |
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261 | buffer[0] = GBCM_COMMAND_SEND; |
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262 | |
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263 | long i = 2; |
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264 | buffer[i++] = (long)gbd; |
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265 | buffer[i++] = gbd->index; |
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266 | |
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267 | write_into_comm_buffer(buffer[i++], gbd->flags); |
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268 | |
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269 | if (gbd->is_container()) { |
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270 | GBCONTAINER *gbc = gbd->as_container(); |
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271 | int end = gbc->d.nheader; |
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272 | |
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273 | write_into_comm_buffer(buffer[i++], gbc->flags3); |
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274 | |
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275 | buffer[i++] = send_headera ? end : -1; |
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276 | buffer[i++] = deep ? gbc->d.size : -1; |
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277 | buffer[1] = i; |
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278 | |
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279 | if (gbcm_write(socket, (const char *)buffer, i* sizeof(long))) { |
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280 | return GB_export_error("ARB_DB WRITE TO SOCKET FAILED"); |
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281 | } |
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282 | |
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283 | if (send_headera) { |
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284 | gb_header_list *hdl = GB_DATA_LIST_HEADER(gbc->d); |
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285 | gb_header_flags *buf2 = (gb_header_flags *)GB_give_buffer2(gbc->d.nheader * sizeof(gb_header_flags)); |
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286 | |
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287 | for (int index = 0; index < end; index++) { |
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288 | buf2[index] = hdl[index].flags; |
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289 | } |
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290 | if (gbcm_write(socket, (const char *)buf2, end * sizeof(gb_header_flags))) { |
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291 | return GB_export_error("ARB_DB WRITE TO SOCKET FAILED"); |
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292 | } |
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293 | } |
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294 | |
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295 | if (deep) { |
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296 | debug_printf("%i ", gbc->d.size); |
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297 | |
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298 | for (int index = 0; index < end; index++) { |
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299 | GBDATA *gb2 = GBCONTAINER_ELEM(gbc, index); |
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300 | if (gb2) { |
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301 | debug_printf("%i ", index); |
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302 | GB_ERROR error = gbcm_write_bin(socket, gb2, (long *)buffer, mode, deep-1, send_headera); |
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303 | if (error) return error; |
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304 | } |
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305 | } |
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306 | debug_printf("\n", 0); |
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307 | } |
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308 | } |
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309 | else { |
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310 | GBENTRY *gbe = gbd->as_entry(); |
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311 | if (gbe->type() < GB_BITS) { |
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312 | buffer[i++] = gbe->info.i; |
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313 | buffer[1] = i; |
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314 | if (gbcm_write(socket, (const char *)buffer, i*sizeof(long))) { |
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315 | return GB_export_error("ARB_DB WRITE TO SOCKET FAILED"); |
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316 | } |
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317 | } |
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318 | else { |
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319 | long memsize; |
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320 | buffer[i++] = gbe->size(); |
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321 | memsize = buffer[i++] = gbe->memsize(); |
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322 | buffer[1] = i; |
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323 | if (gbcm_write(socket, (const char *)buffer, i* sizeof(long))) { |
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324 | return GB_export_error("ARB_DB WRITE TO SOCKET FAILED"); |
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325 | } |
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326 | if (gbcm_write(socket, gbe->data(), memsize)) { |
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327 | return GB_export_error("ARB_DB WRITE TO SOCKET FAILED"); |
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328 | } |
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329 | } |
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330 | } |
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331 | return 0; |
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332 | } |
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333 | |
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334 | #define RETURN_SERVER_FAULT_ON_BAD_ADDRESS(ptr) \ |
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335 | do { \ |
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336 | GB_ERROR error = GBK_test_address((long*)(ptr), GBTUM_MAGIC_NUMBER); \ |
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337 | if (error) { \ |
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338 | GB_warningf("%s (%s, #%i)", error, __FILE__, __LINE__); \ |
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339 | return GBCM_SERVER_FAULT; \ |
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340 | } \ |
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341 | } while (0) |
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342 | |
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343 | static GBCM_ServerResult gbcm_read_bin(int socket, GBCONTAINER *gbc, long *buffer, long mode, GBDATA *gb_source, void *cs_main) { |
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344 | /* read an entry into gbc |
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345 | * mode == 1 server reads data |
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346 | * mode == 0 client read all data |
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347 | * mode == -1 client read but do not read subobjects -> folded cont |
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348 | * mode == -2 client dummy read |
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349 | */ |
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350 | |
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351 | long size = gbcm_read(socket, (char *)buffer, sizeof(long) * 3); |
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352 | if (size != sizeof(long) * 3) { |
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353 | fprintf(stderr, "receive failed header size\n"); |
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354 | return GBCM_SERVER_FAULT; |
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355 | } |
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356 | if (buffer[0] != GBCM_COMMAND_SEND) { |
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357 | fprintf(stderr, "receive failed wrong command\n"); |
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358 | return GBCM_SERVER_FAULT; |
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359 | } |
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360 | |
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361 | long id = buffer[2]; |
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362 | long i = buffer[1]; |
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363 | i = sizeof(long) * (i - 3); |
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364 | |
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365 | size = gbcm_read(socket, (char *)buffer, i); |
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366 | if (size != i) { |
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367 | GB_internal_error("receive failed DB_NODE\n"); |
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368 | return GBCM_SERVER_FAULT; |
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369 | } |
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370 | |
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371 | i = 0; |
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372 | long index_pos = buffer[i++]; |
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373 | if (!gb_source && gbc && index_pos<gbc->d.nheader) { |
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374 | gb_source = GBCONTAINER_ELEM(gbc, index_pos); |
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375 | } |
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376 | |
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377 | gb_flag_types flags = *(gb_flag_types *)(&buffer[i++]); |
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378 | GB_TYPES type = GB_TYPES(flags.type); |
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379 | |
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380 | GBDATA *gb2; |
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381 | if (mode >= -1) { // real read data |
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382 | if (gb_source) { |
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383 | GB_TYPES stype = gb_source->type(); |
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384 | gb2 = gb_source; |
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385 | if (stype != type) { |
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386 | GB_internal_error("Type changed in client: Connection aborted\n"); |
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387 | return GBCM_SERVER_FAULT; |
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388 | } |
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389 | if (mode>0) { // transactions only in server |
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390 | RETURN_SERVER_FAULT_ON_BAD_ADDRESS(gb2); |
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391 | } |
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392 | if (stype != GB_DB) { |
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393 | gb_save_extern_data_in_ts(gb2->as_entry()); |
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394 | } |
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395 | gb_touch_entry(gb2, GB_NORMAL_CHANGE); |
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396 | } |
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397 | else { |
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398 | if (mode==-1) goto dont_create_in_a_folded_container; |
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399 | if (type == GB_DB) { |
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400 | gb2 = gb_make_container(gbc, 0, index_pos, GB_DATA_LIST_HEADER(gbc->d)[index_pos].flags.key_quark); |
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401 | } |
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402 | else { // @@@ Header Transaction stimmt nicht |
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403 | gb2 = gb_make_entry(gbc, 0, index_pos, GB_DATA_LIST_HEADER(gbc->d)[index_pos].flags.key_quark, (GB_TYPES)type); |
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404 | } |
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405 | if (mode>0) { // transaction only in server |
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406 | gb_touch_entry(gb2, GB_CREATED); |
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407 | } |
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408 | else { |
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409 | gb2->server_id = id; |
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410 | GBS_write_numhash(GB_MAIN(gb2)->remote_hash, id, (long) gb2); |
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411 | } |
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412 | if (cs_main) { |
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413 | gbcms_create *cs; |
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414 | cs = (gbcms_create *) GB_calloc(sizeof(gbcms_create), 1); |
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415 | cs->next = *((gbcms_create **) cs_main); |
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416 | *((gbcms_create **) cs_main) = cs; |
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417 | cs->server_id = gb2; |
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418 | cs->client_id = (GBDATA *)id; |
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419 | } |
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420 | } |
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421 | gb2->flags = flags; |
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422 | if (type == GB_DB) { |
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423 | gb2->as_container()->flags3 = *((gb_flag_types3 *)&(buffer[i++])); |
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424 | } |
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425 | } |
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426 | else { |
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427 | dont_create_in_a_folded_container : |
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428 | if (type == GB_DB) { |
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429 | // gb_flag_types3 flags3 = *((gb_flag_types3 *)&(buffer[i++])); |
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430 | ++i; |
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431 | } |
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432 | gb2 = 0; |
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433 | } |
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434 | |
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435 | if (type == GB_DB) { |
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436 | long nheader = buffer[i++]; |
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437 | long nitems = buffer[i++]; |
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438 | |
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439 | if (nheader > 0) { |
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440 | long realsize = nheader* sizeof(gb_header_flags); |
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441 | gb_header_flags *buffer2 = (gb_header_flags *)GB_give_buffer2(realsize); |
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442 | |
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443 | size = gbcm_read(socket, (char *)buffer2, realsize); |
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444 | if (size != realsize) { |
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445 | GB_internal_error("receive failed data\n"); |
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446 | return GBCM_SERVER_FAULT; |
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447 | } |
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448 | if (gb2 && mode >= -1) { |
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449 | GBCONTAINER *gbc2 = gb2->as_container(); |
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450 | GB_MAIN_TYPE *Main = GBCONTAINER_MAIN(gbc2); |
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451 | |
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452 | gb_create_header_array(gbc2, (int)nheader); |
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453 | if (nheader < gbc2->d.nheader) { |
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454 | GB_internal_error("Inconsistency Client-Server Cache"); |
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455 | } |
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456 | gbc2->d.nheader = (int)nheader; |
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457 | gb_header_list *hdl = GB_DATA_LIST_HEADER(gbc2->d); |
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458 | for (long item = 0; item < nheader; item++) { |
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459 | GBQUARK old_index = hdl->flags.key_quark; |
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460 | GBQUARK new_index = buffer2->key_quark; |
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461 | if (new_index && !old_index) { // a rename ... |
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462 | gb_write_index_key(gbc2, item, new_index); |
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463 | } |
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464 | if (mode>0) { // server read data |
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465 | |
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466 | |
---|
467 | } |
---|
468 | else { |
---|
469 | if (buffer2->changed >= GB_DELETED) { |
---|
470 | hdl->flags.set_change(GB_DELETED); |
---|
471 | } |
---|
472 | } |
---|
473 | hdl->flags.flags = buffer2->flags; |
---|
474 | hdl++; buffer2++; |
---|
475 | } |
---|
476 | if (mode>0) { // transaction only in server |
---|
477 | gb_touch_header(gbc2); |
---|
478 | } |
---|
479 | else { |
---|
480 | gbc2->header_update_date = Main->clock; |
---|
481 | } |
---|
482 | } |
---|
483 | } |
---|
484 | |
---|
485 | if (nitems >= 0) { |
---|
486 | long newmod = mode; |
---|
487 | if (mode>=0) { |
---|
488 | if (mode==0 && nitems<=1) { // only a partial send |
---|
489 | gb2->flags2.folded_container = 1; |
---|
490 | } |
---|
491 | } |
---|
492 | else { |
---|
493 | newmod = -2; |
---|
494 | } |
---|
495 | debug_printf("Client %i \n", nheader); |
---|
496 | for (long item = 0; item < nitems; item++) { |
---|
497 | debug_printf(" Client reading %i\n", item); |
---|
498 | long irror = gbcm_read_bin(socket, gb2->as_container(), buffer, newmod, 0, cs_main); |
---|
499 | if (irror) { |
---|
500 | return GBCM_SERVER_FAULT; |
---|
501 | } |
---|
502 | } |
---|
503 | debug_printf("Client done\n", 0); |
---|
504 | } |
---|
505 | else { |
---|
506 | if ((mode==0) && !gb_source) { // created GBDATA at client |
---|
507 | gb2->flags2.folded_container = 1; |
---|
508 | } |
---|
509 | } |
---|
510 | } |
---|
511 | else { |
---|
512 | if (mode >= 0) { |
---|
513 | GBENTRY *ge2 = gb2->as_entry(); |
---|
514 | if (type < GB_BITS) { |
---|
515 | ge2->info.i = buffer[i++]; |
---|
516 | } |
---|
517 | else { |
---|
518 | long realsize = buffer[i++]; |
---|
519 | long memsize = buffer[i++]; |
---|
520 | |
---|
521 | ge2->index_check_out(); |
---|
522 | assert_or_exit(!(ge2->stored_external() && ge2->info.ex.get_data())); |
---|
523 | |
---|
524 | GBENTRY_memory storage(ge2, realsize, memsize); |
---|
525 | size = gbcm_read(socket, storage, memsize); |
---|
526 | if (size != memsize) { |
---|
527 | fprintf(stderr, "receive failed data\n"); |
---|
528 | return GBCM_SERVER_FAULT; |
---|
529 | } |
---|
530 | } |
---|
531 | } |
---|
532 | else { |
---|
533 | if (type >= GB_BITS) { // dummy read (e.g. updata in server && not cached in client |
---|
534 | long memsize; |
---|
535 | char *buffer2; |
---|
536 | i++; |
---|
537 | memsize = buffer[i++]; |
---|
538 | buffer2 = GB_give_buffer2(memsize); |
---|
539 | |
---|
540 | size = gbcm_read(socket, buffer2, memsize); |
---|
541 | if (size != memsize) { |
---|
542 | GB_internal_error("receive failed data\n"); |
---|
543 | return GBCM_SERVER_FAULT; |
---|
544 | } |
---|
545 | } |
---|
546 | } |
---|
547 | } |
---|
548 | |
---|
549 | return GBCM_SERVER_OK; |
---|
550 | } |
---|
551 | |
---|
552 | |
---|
553 | static void gbcms_shift_delete_list(void *hsi, void *soi) { |
---|
554 | gb_server_data *hs = (gb_server_data *)hsi; |
---|
555 | Socinf *socinf = (Socinf *)soi; |
---|
556 | |
---|
557 | if (!hs->del_first) return; |
---|
558 | while ((!socinf->dl) || (socinf->dl->next)) { |
---|
559 | if (!socinf->dl) socinf->dl = hs->del_first; |
---|
560 | else socinf->dl = socinf->dl->next; |
---|
561 | } |
---|
562 | } |
---|
563 | |
---|
564 | static GBCM_ServerResult gbcms_write_deleted(int socket, long hsin, long client_clock, long *buffer) { |
---|
565 | Socinf *socinf; |
---|
566 | gb_server_data *hs; |
---|
567 | gbcms_delete_list *dl; |
---|
568 | |
---|
569 | hs = (gb_server_data *)hsin; |
---|
570 | for (socinf = hs->soci; socinf; socinf=socinf->next) { |
---|
571 | if (socinf->socket == socket) break; |
---|
572 | } |
---|
573 | if (!socinf) return GBCM_SERVER_OK; |
---|
574 | if (!hs->del_first) return GBCM_SERVER_OK; |
---|
575 | while (!socinf->dl || (socinf->dl->next)) { |
---|
576 | if (!socinf->dl) socinf->dl = hs->del_first; |
---|
577 | else socinf->dl = socinf->dl->next; |
---|
578 | if (socinf->dl->creation_date>client_clock) continue; |
---|
579 | // created and deleted object |
---|
580 | buffer[0] = GBCM_COMMAND_PUT_UPDATE_DELETE; |
---|
581 | buffer[1] = (long)socinf->dl->gbd; |
---|
582 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
583 | } |
---|
584 | for (socinf = hs->soci; socinf; socinf=socinf->next) { |
---|
585 | if (!socinf->dl) return GBCM_SERVER_OK; |
---|
586 | } |
---|
587 | while ((dl = hs->del_first)) { |
---|
588 | for (socinf = hs->soci; socinf; socinf=socinf->next) { |
---|
589 | if (socinf->dl == dl) return GBCM_SERVER_OK; |
---|
590 | } |
---|
591 | hs->del_first = dl->next; |
---|
592 | gbm_free_mem(dl, sizeof(gbcms_delete_list), GBM_CB_INDEX); |
---|
593 | } |
---|
594 | return GBCM_SERVER_OK; |
---|
595 | } |
---|
596 | |
---|
597 | static GBCM_ServerResult gbcms_write_updated(int socket, GBDATA *gbd, long hsin, long client_clock, long *buffer) { |
---|
598 | if (gbd->update_date()<=client_clock) return GBCM_SERVER_OK; |
---|
599 | if (gbd->creation_date() > client_clock) { |
---|
600 | buffer[0] = GBCM_COMMAND_PUT_UPDATE_CREATE; |
---|
601 | buffer[1] = (long)GB_FATHER(gbd); |
---|
602 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
603 | gbcm_write_bin(socket, gbd, buffer, 1, 0, 1); |
---|
604 | } |
---|
605 | else { // send clients first |
---|
606 | if (gbd->is_container()) { |
---|
607 | GBCONTAINER *gbc = gbd->as_container(); |
---|
608 | int end = (int)gbc->d.nheader; |
---|
609 | int send_header = (gbc->header_update_date > client_clock) ? 1 : 0; |
---|
610 | |
---|
611 | buffer[0] = GBCM_COMMAND_PUT_UPDATE_UPDATE; |
---|
612 | buffer[1] = (long)gbd; |
---|
613 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
614 | gbcm_write_bin(socket, gbd, buffer, 1, 0, send_header); |
---|
615 | |
---|
616 | for (int index = 0; index < end; index++) { |
---|
617 | GBDATA *gb2 = GBCONTAINER_ELEM(gbc, index); |
---|
618 | if (gb2 && gbcms_write_updated(socket, gb2, hsin, client_clock, buffer)) { |
---|
619 | return GBCM_SERVER_FAULT; |
---|
620 | } |
---|
621 | } |
---|
622 | } |
---|
623 | else { |
---|
624 | buffer[0] = GBCM_COMMAND_PUT_UPDATE_UPDATE; |
---|
625 | buffer[1] = (long)gbd; |
---|
626 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
627 | const int send_header = 0; |
---|
628 | gbcm_write_bin(socket, gbd, buffer, 1, 0, send_header); |
---|
629 | } |
---|
630 | } |
---|
631 | |
---|
632 | return GBCM_SERVER_OK; |
---|
633 | } |
---|
634 | |
---|
635 | static GBCM_ServerResult gbcms_write_keys(int socket, GBDATA *gbd) { // @@@ move into GB_MAIN_TYPE? |
---|
636 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
637 | |
---|
638 | long buffer[4]; |
---|
639 | buffer[0] = GBCM_COMMAND_PUT_UPDATE_KEYS; |
---|
640 | buffer[1] = (long)gbd; |
---|
641 | buffer[2] = Main->keycnt; |
---|
642 | buffer[3] = Main->first_free_key; |
---|
643 | |
---|
644 | if (gbcm_write(socket, (const char *)buffer, 4*sizeof(long))) return GBCM_SERVER_FAULT; |
---|
645 | |
---|
646 | for (int i=1; i<Main->keycnt; i++) { |
---|
647 | buffer[0] = Main->keys[i].nref; |
---|
648 | buffer[1] = Main->keys[i].next_free_key; |
---|
649 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
650 | if (gbcm_write_string(socket, Main->keys[i].key)) return GBCM_SERVER_FAULT; |
---|
651 | } |
---|
652 | return GBCM_SERVER_OK; |
---|
653 | } |
---|
654 | |
---|
655 | static GBCM_ServerResult gbcms_talking_unfold(int socket, long */*hsin*/, void */*sin*/, GBDATA *gb_in) { |
---|
656 | // command: GBCM_COMMAND_UNFOLD |
---|
657 | |
---|
658 | GBCONTAINER *gbc = gb_in->expect_container(); |
---|
659 | GBDATA *gb2; |
---|
660 | char *buffer; |
---|
661 | long deep[1]; |
---|
662 | long index_pos[1]; |
---|
663 | int index, start, end; |
---|
664 | |
---|
665 | RETURN_SERVER_FAULT_ON_BAD_ADDRESS(gbc); |
---|
666 | if (gbc->type() != GB_DB) return GBCM_SERVER_FAULT; |
---|
667 | if (gbcm_read_two(socket, GBCM_COMMAND_SETDEEP, 0, deep)) { |
---|
668 | return GBCM_SERVER_FAULT; |
---|
669 | } |
---|
670 | if (gbcm_read_two(socket, GBCM_COMMAND_SETINDEX, 0, index_pos)) { |
---|
671 | return GBCM_SERVER_FAULT; |
---|
672 | } |
---|
673 | |
---|
674 | gbcm_read_flush(); |
---|
675 | buffer = GB_give_buffer(1014); |
---|
676 | |
---|
677 | if (index_pos[0]==-2) { |
---|
678 | GB_ERROR error = gbcm_write_bin(socket, gbc, (long *)buffer, 1, deep[0]+1, 1); |
---|
679 | if (error) { |
---|
680 | return GBCM_SERVER_FAULT; |
---|
681 | } |
---|
682 | gbcm_write_flush(socket); |
---|
683 | return GBCM_SERVER_OK; |
---|
684 | } |
---|
685 | |
---|
686 | if (index_pos[0] >= 0) { |
---|
687 | start = (int)index_pos[0]; |
---|
688 | end = start + 1; |
---|
689 | if (gbcm_write_two(socket, GBCM_COMMAND_SEND_COUNT, 1)) { |
---|
690 | return GBCM_SERVER_FAULT; |
---|
691 | } |
---|
692 | } |
---|
693 | else { |
---|
694 | start = 0; |
---|
695 | end = gbc->d.nheader; |
---|
696 | if (gbcm_write_two(socket, GBCM_COMMAND_SEND_COUNT, gbc->d.size)) { |
---|
697 | return GBCM_SERVER_FAULT; |
---|
698 | } |
---|
699 | } |
---|
700 | for (index = start; index < end; index++) { |
---|
701 | if ((gb2 = GBCONTAINER_ELEM(gbc, index))) { |
---|
702 | GB_ERROR error = gbcm_write_bin(socket, gb2, (long *)buffer, 1, deep[0], 1); |
---|
703 | if (error) { |
---|
704 | return GBCM_SERVER_FAULT; |
---|
705 | } |
---|
706 | } |
---|
707 | } |
---|
708 | |
---|
709 | gbcm_write_flush(socket); |
---|
710 | return GBCM_SERVER_OK; |
---|
711 | } |
---|
712 | |
---|
713 | static GBCM_ServerResult gbcms_talking_get_update(int /*socket*/, long */*hsin*/, void */*sin*/, GBDATA */*gbd*/) { |
---|
714 | return GBCM_SERVER_OK; |
---|
715 | } |
---|
716 | |
---|
717 | static GBCM_ServerResult gbcms_talking_put_update(int socket, long */*hsin*/, void */*sin*/, GBDATA */*gbd*/) { |
---|
718 | /* Reads |
---|
719 | * - the date |
---|
720 | * - and all changed data |
---|
721 | * from client. |
---|
722 | * |
---|
723 | * command: GBCM_COMMAND_PUT_UPDATE |
---|
724 | */ |
---|
725 | long irror; |
---|
726 | GBDATA *gbd; |
---|
727 | gbcms_create *cs[1], *cs_main[1]; |
---|
728 | long *buffer; |
---|
729 | bool end; |
---|
730 | |
---|
731 | cs_main[0] = 0; |
---|
732 | buffer = (long *) GB_give_buffer(1024); |
---|
733 | end = false; |
---|
734 | while (!end) { |
---|
735 | if (gbcm_read(socket, (char *) buffer, sizeof(long) * 3) != sizeof(long) * 3) { |
---|
736 | return GBCM_SERVER_FAULT; |
---|
737 | } |
---|
738 | gbd = (GBDATA *) buffer[2]; |
---|
739 | RETURN_SERVER_FAULT_ON_BAD_ADDRESS(gbd); |
---|
740 | switch (buffer[0]) { |
---|
741 | case GBCM_COMMAND_PUT_UPDATE_CREATE: |
---|
742 | irror = gbcm_read_bin(socket, gbd->as_container(), buffer, 1, 0, (void *)cs_main); |
---|
743 | if (irror) return GBCM_SERVER_FAULT; |
---|
744 | break; |
---|
745 | case GBCM_COMMAND_PUT_UPDATE_DELETE: |
---|
746 | gb_delete_force(gbd); |
---|
747 | break; |
---|
748 | case GBCM_COMMAND_PUT_UPDATE_UPDATE: |
---|
749 | irror = gbcm_read_bin(socket, 0, buffer, 1, gbd, 0); |
---|
750 | if (irror) return GBCM_SERVER_FAULT; |
---|
751 | break; |
---|
752 | case GBCM_COMMAND_PUT_UPDATE_END: |
---|
753 | end = true; |
---|
754 | break; |
---|
755 | default: |
---|
756 | return GBCM_SERVER_FAULT; |
---|
757 | } |
---|
758 | } |
---|
759 | gbcm_read_flush(); // send all id's of newly created objects |
---|
760 | for (cs[0] = cs_main[0]; cs[0]; cs[0]=cs_main[0]) { |
---|
761 | cs_main[0] = cs[0]->next; |
---|
762 | buffer[0] = (long)cs[0]->client_id; |
---|
763 | buffer[1] = (long)cs[0]->server_id; |
---|
764 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
765 | free(cs[0]); |
---|
766 | } |
---|
767 | buffer[0] = 0; |
---|
768 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
769 | gbcm_write_flush(socket); |
---|
770 | return GBCM_SERVER_OK; |
---|
771 | } |
---|
772 | |
---|
773 | static GBCM_ServerResult gbcms_talking_updated(int /*socket*/, long */*hsin*/, void */*sin*/, GBDATA */*gbd*/) { |
---|
774 | return GBCM_SERVER_OK; |
---|
775 | } |
---|
776 | |
---|
777 | static GBCM_ServerResult gbcms_talking_init_transaction(int socket, long *hsin, void *sin, GBDATA */*gbd*/) { |
---|
778 | /* begin client transaction |
---|
779 | * sends clock |
---|
780 | * |
---|
781 | * command: GBCM_COMMAND_INIT_TRANSACTION |
---|
782 | */ |
---|
783 | |
---|
784 | gb_server_data *hs = (gb_server_data *)hsin; |
---|
785 | Socinf *si = (Socinf *)sin; |
---|
786 | |
---|
787 | GBDATA *gb_main = hs->gb_main; |
---|
788 | GB_MAIN_TYPE *Main = GB_MAIN(gb_main); |
---|
789 | GBDATA *gbd = gb_main; |
---|
790 | char *user = gbcm_read_string(socket); |
---|
791 | |
---|
792 | gbcm_read_flush(); |
---|
793 | if (gbcm_login(gbd->as_container(), user)) { |
---|
794 | return GBCM_SERVER_FAULT; |
---|
795 | } |
---|
796 | si->username = user; |
---|
797 | |
---|
798 | gb_local->running_client_transaction = ARB_TRANS; |
---|
799 | |
---|
800 | if (gbcm_write_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, Main->clock)) { |
---|
801 | return GBCM_SERVER_FAULT; |
---|
802 | } |
---|
803 | if (gbcm_write_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, (long)gbd)) { |
---|
804 | return GBCM_SERVER_FAULT; |
---|
805 | } |
---|
806 | if (gbcm_write_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, (long)Main->this_user->userid)) { |
---|
807 | return GBCM_SERVER_FAULT; |
---|
808 | } |
---|
809 | gbcms_write_keys(socket, gbd); |
---|
810 | |
---|
811 | gbcm_write_flush(socket); |
---|
812 | // send modified data to client |
---|
813 | |
---|
814 | GB_begin_transaction(gbd); |
---|
815 | while (gb_local->running_client_transaction == ARB_TRANS) { |
---|
816 | fd_set set; |
---|
817 | FD_ZERO(&set); |
---|
818 | FD_SET(socket, &set); |
---|
819 | |
---|
820 | struct timeval timeout; |
---|
821 | timeout.tv_sec = GBCMS_TRANSACTION_TIMEOUT; |
---|
822 | timeout.tv_usec = 100000; |
---|
823 | |
---|
824 | long anz = select(FD_SETSIZE, FD_SET_TYPE &set, NULL, NULL, &timeout); |
---|
825 | |
---|
826 | if (anz<0) continue; |
---|
827 | if (anz==0) { |
---|
828 | GB_export_errorf("ARB_DB ERROR CLIENT TRANSACTION TIMEOUT, CLIENT DISCONNECTED (I waited %lu seconds)", timeout.tv_sec); |
---|
829 | GB_print_error(); |
---|
830 | gb_local->running_client_transaction = ARB_ABORT; |
---|
831 | GB_abort_transaction(gbd); |
---|
832 | return GBCM_SERVER_FAULT; |
---|
833 | } |
---|
834 | if (GBCM_SERVER_OK == gbcms_talking(socket, hsin, sin)) continue; |
---|
835 | gb_local->running_client_transaction = ARB_ABORT; |
---|
836 | GB_abort_transaction(gbd); |
---|
837 | return GBCM_SERVER_FAULT; |
---|
838 | } |
---|
839 | if (gb_local->running_client_transaction == ARB_COMMIT) { |
---|
840 | GB_commit_transaction(gbd); |
---|
841 | gbcms_shift_delete_list(hsin, sin); |
---|
842 | } |
---|
843 | else { |
---|
844 | GB_abort_transaction(gbd); |
---|
845 | } |
---|
846 | return GBCM_SERVER_OK; |
---|
847 | } |
---|
848 | |
---|
849 | static GBCM_ServerResult gbcms_talking_begin_transaction(int socket, long *hsin, void *sin, GBDATA *long_client_clock) { |
---|
850 | /* begin client transaction |
---|
851 | * sends clock |
---|
852 | * deleted |
---|
853 | * created+updated |
---|
854 | * |
---|
855 | * command: GBCM_COMMAND_BEGIN_TRANSACTION |
---|
856 | */ |
---|
857 | long client_clock = (long)long_client_clock; |
---|
858 | GBDATA *gb_main; |
---|
859 | GBDATA *gbd; |
---|
860 | gb_server_data *hs = (gb_server_data *)hsin; |
---|
861 | long anz; |
---|
862 | long *buffer; |
---|
863 | fd_set set; |
---|
864 | timeval timeout; |
---|
865 | |
---|
866 | gb_main = hs->gb_main; |
---|
867 | gbd = gb_main; |
---|
868 | gbcm_read_flush(); |
---|
869 | gb_local->running_client_transaction = ARB_TRANS; |
---|
870 | |
---|
871 | if (gbcm_write_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, GB_MAIN(gbd)->clock)) { |
---|
872 | return GBCM_SERVER_FAULT; |
---|
873 | } |
---|
874 | |
---|
875 | // send modified data to client |
---|
876 | buffer = (long *)GB_give_buffer(1024); |
---|
877 | if (GB_MAIN(gb_main)->key_clock > client_clock) { |
---|
878 | if (gbcms_write_keys(socket, gbd)) return GBCM_SERVER_FAULT; |
---|
879 | } |
---|
880 | if (gbcms_write_deleted(socket, (long)hs, client_clock, buffer)) return GBCM_SERVER_FAULT; |
---|
881 | if (gbcms_write_updated(socket, gbd, (long)hs, client_clock, buffer)) return GBCM_SERVER_FAULT; |
---|
882 | buffer[0] = GBCM_COMMAND_PUT_UPDATE_END; |
---|
883 | buffer[1] = 0; |
---|
884 | if (gbcm_write(socket, (const char *)buffer, sizeof(long)*2)) return GBCM_SERVER_FAULT; |
---|
885 | if (gbcm_write_flush(socket)) return GBCM_SERVER_FAULT; |
---|
886 | |
---|
887 | GB_begin_transaction(gbd); |
---|
888 | while (gb_local->running_client_transaction == ARB_TRANS) { |
---|
889 | FD_ZERO(&set); |
---|
890 | FD_SET(socket, &set); |
---|
891 | |
---|
892 | timeout.tv_sec = GBCMS_TRANSACTION_TIMEOUT; |
---|
893 | timeout.tv_usec = 0; |
---|
894 | |
---|
895 | anz = select(FD_SETSIZE, FD_SET_TYPE &set, NULL, NULL, &timeout); |
---|
896 | |
---|
897 | if (anz<0) continue; |
---|
898 | if (anz==0) { |
---|
899 | GB_export_errorf("ARB_DB ERROR CLIENT TRANSACTION TIMEOUT, CLIENT DISCONNECTED (I waited %lu seconds)", timeout.tv_sec); |
---|
900 | GB_print_error(); |
---|
901 | gb_local->running_client_transaction = ARB_ABORT; |
---|
902 | GB_abort_transaction(gbd); |
---|
903 | return GBCM_SERVER_FAULT; |
---|
904 | } |
---|
905 | if (GBCM_SERVER_OK == gbcms_talking(socket, hsin, sin)) continue; |
---|
906 | gb_local->running_client_transaction = ARB_ABORT; |
---|
907 | GB_abort_transaction(gbd); |
---|
908 | return GBCM_SERVER_FAULT; |
---|
909 | } |
---|
910 | if (gb_local->running_client_transaction == ARB_COMMIT) { |
---|
911 | GB_commit_transaction(gbd); |
---|
912 | gbcms_shift_delete_list(hsin, sin); |
---|
913 | } |
---|
914 | else { |
---|
915 | GB_abort_transaction(gbd); |
---|
916 | } |
---|
917 | return GBCM_SERVER_OK; |
---|
918 | } |
---|
919 | |
---|
920 | static GBCM_ServerResult commit_or_abort_transaction(int socket, GBDATA *gbd, ARB_TRANS_TYPE commit_or_abort) { |
---|
921 | RETURN_SERVER_FAULT_ON_BAD_ADDRESS(gbd); |
---|
922 | |
---|
923 | gb_local->running_client_transaction = commit_or_abort; |
---|
924 | gbcm_read_flush(); |
---|
925 | |
---|
926 | if (gbcm_write_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, 0)) return GBCM_SERVER_FAULT; |
---|
927 | return gbcm_write_flush(socket); |
---|
928 | } |
---|
929 | static GBCM_ServerResult gbcms_talking_commit_transaction(int socket, long */*hsin*/, void */*sin*/, GBDATA *gbd) { |
---|
930 | // command: GBCM_COMMAND_COMMIT_TRANSACTION |
---|
931 | return commit_or_abort_transaction(socket, gbd, ARB_COMMIT); |
---|
932 | } |
---|
933 | |
---|
934 | static GBCM_ServerResult gbcms_talking_abort_transaction(int socket, long */*hsin*/, void */*sin*/, GBDATA *gbd) { |
---|
935 | // command: GBCM_COMMAND_ABORT_TRANSACTION |
---|
936 | return commit_or_abort_transaction(socket, gbd, ARB_ABORT); |
---|
937 | } |
---|
938 | |
---|
939 | static GBCM_ServerResult gbcms_talking_close(int /*socket*/, long */*hsin*/, void */*sin*/, GBDATA */*gbd*/) { |
---|
940 | // command: GBCM_COMMAND_CLOSE |
---|
941 | return GBCM_SERVER_ABORTED; |
---|
942 | } |
---|
943 | |
---|
944 | static GBCM_ServerResult gbcms_talking_undo(int socket, long */*hsin*/, void */*sin*/, GBDATA *gbd) { |
---|
945 | // command: GBCM_COMMAND_UNDO |
---|
946 | long cmd; |
---|
947 | GB_ERROR result = 0; |
---|
948 | char *to_free = 0; |
---|
949 | if (gbcm_read_two(socket, GBCM_COMMAND_UNDO_CMD, 0, &cmd)) { |
---|
950 | return GBCM_SERVER_FAULT; |
---|
951 | } |
---|
952 | gbcm_read_flush(); |
---|
953 | switch (cmd) { |
---|
954 | case _GBCMC_UNDOCOM_REQUEST_NOUNDO: |
---|
955 | result = GB_request_undo_type(gbd, GB_UNDO_NONE); |
---|
956 | break; |
---|
957 | case _GBCMC_UNDOCOM_REQUEST_NOUNDO_KILL: |
---|
958 | result = GB_request_undo_type(gbd, GB_UNDO_KILL); |
---|
959 | break; |
---|
960 | case _GBCMC_UNDOCOM_REQUEST_UNDO: |
---|
961 | result = GB_request_undo_type(gbd, GB_UNDO_UNDO); |
---|
962 | break; |
---|
963 | case _GBCMC_UNDOCOM_INFO_UNDO: |
---|
964 | result = to_free = GB_undo_info(gbd, GB_UNDO_UNDO); |
---|
965 | break; |
---|
966 | case _GBCMC_UNDOCOM_INFO_REDO: |
---|
967 | result = to_free = GB_undo_info(gbd, GB_UNDO_REDO); |
---|
968 | break; |
---|
969 | case _GBCMC_UNDOCOM_UNDO: |
---|
970 | result = GB_undo(gbd, GB_UNDO_UNDO); |
---|
971 | break; |
---|
972 | case _GBCMC_UNDOCOM_REDO: |
---|
973 | result = GB_undo(gbd, GB_UNDO_REDO); |
---|
974 | break; |
---|
975 | default: result = GB_set_undo_mem(gbd, cmd); |
---|
976 | } |
---|
977 | if (gbcm_write_string(socket, result)) { |
---|
978 | if (to_free) free(to_free); |
---|
979 | return GBCM_SERVER_FAULT; |
---|
980 | } |
---|
981 | if (to_free) free(to_free); |
---|
982 | return gbcm_write_flush(socket); |
---|
983 | } |
---|
984 | |
---|
985 | static GBCM_ServerResult gbcms_talking_find(int socket, long */*hsin*/, void */*sin*/, GBDATA * gbd) { |
---|
986 | // command: GBCM_COMMAND_FIND |
---|
987 | |
---|
988 | char *key; |
---|
989 | char *val1 = 0; |
---|
990 | GB_CASE case_sens = GB_CASE_UNDEFINED; |
---|
991 | long val2 = 0; |
---|
992 | GB_TYPES type; |
---|
993 | void *buffer[2]; |
---|
994 | |
---|
995 | RETURN_SERVER_FAULT_ON_BAD_ADDRESS(gbd); |
---|
996 | |
---|
997 | key = gbcm_read_string(socket); |
---|
998 | type = GB_TYPES(gbcm_read_long(socket)); |
---|
999 | |
---|
1000 | switch (type) { |
---|
1001 | case GB_NONE: |
---|
1002 | break; |
---|
1003 | |
---|
1004 | case GB_STRING: |
---|
1005 | val1 = gbcm_read_string(socket); |
---|
1006 | case_sens = GB_CASE(gbcm_read_long(socket)); |
---|
1007 | break; |
---|
1008 | |
---|
1009 | case GB_INT: |
---|
1010 | val2 = gbcm_read_long(socket); |
---|
1011 | break; |
---|
1012 | |
---|
1013 | default: |
---|
1014 | gb_assert(0); |
---|
1015 | GB_export_errorf("gbcms_talking_find: illegal data type (%i)", type); |
---|
1016 | GB_print_error(); |
---|
1017 | return GBCM_SERVER_FAULT; |
---|
1018 | } |
---|
1019 | |
---|
1020 | { |
---|
1021 | GB_SEARCH_TYPE gbs = GB_SEARCH_TYPE(gbcm_read_long(socket)); |
---|
1022 | gbcm_read_flush(); |
---|
1023 | |
---|
1024 | if (type == GB_FIND) { |
---|
1025 | gbd = GB_find(gbd, key, gbs); |
---|
1026 | } |
---|
1027 | else if (type == GB_STRING) { |
---|
1028 | gbd = GB_find_string(gbd, key, val1, case_sens, gbs); |
---|
1029 | free(val1); |
---|
1030 | } |
---|
1031 | else if (type == GB_INT) { |
---|
1032 | gbd = GB_find_int(gbd, key, val2, gbs); |
---|
1033 | } |
---|
1034 | else { |
---|
1035 | GB_internal_errorf("Searching DBtype %i not implemented", type); |
---|
1036 | } |
---|
1037 | } |
---|
1038 | |
---|
1039 | free(key); |
---|
1040 | |
---|
1041 | if (gbcm_write_two(socket, GBCM_COMMAND_FIND_ERG, (long) gbd)) { |
---|
1042 | return GBCM_SERVER_FAULT; |
---|
1043 | } |
---|
1044 | if (gbd) { |
---|
1045 | while (GB_GRANDPA(gbd)) { |
---|
1046 | buffer[0] = (void *)gbd->index; |
---|
1047 | buffer[1] = (void *)GB_FATHER(gbd); |
---|
1048 | gbcm_write(socket, (const char *) buffer, sizeof(long) * 2); |
---|
1049 | gbd = GB_FATHER(gbd); |
---|
1050 | } |
---|
1051 | } |
---|
1052 | buffer[0] = NULL; |
---|
1053 | buffer[1] = NULL; |
---|
1054 | gbcm_write(socket, (const char *) buffer, sizeof(long) * 2); |
---|
1055 | |
---|
1056 | return gbcm_write_flush(socket); |
---|
1057 | } |
---|
1058 | |
---|
1059 | static GBCM_ServerResult gbcms_talking_key_alloc(int socket, long */*hsin*/, void */*sin*/, GBDATA * gbd) { |
---|
1060 | // command: GBCM_COMMAND_KEY_ALLOC |
---|
1061 | // (old maybe wrong comment: "do a query in the server") |
---|
1062 | |
---|
1063 | char *key; |
---|
1064 | long index; |
---|
1065 | |
---|
1066 | RETURN_SERVER_FAULT_ON_BAD_ADDRESS(gbd); |
---|
1067 | key = gbcm_read_string(socket); |
---|
1068 | gbcm_read_flush(); |
---|
1069 | |
---|
1070 | if (key) |
---|
1071 | index = gb_create_key(GB_MAIN(gbd), key, false); |
---|
1072 | else |
---|
1073 | index = 0; |
---|
1074 | |
---|
1075 | if (key) |
---|
1076 | free(key); |
---|
1077 | |
---|
1078 | if (gbcm_write_two(socket, GBCM_COMMAND_KEY_ALLOC_RES, index)) { |
---|
1079 | return GBCM_SERVER_FAULT; |
---|
1080 | } |
---|
1081 | return gbcm_write_flush(socket); |
---|
1082 | } |
---|
1083 | |
---|
1084 | static GBCM_ServerResult gbcms_talking_disable_wait_for_new_request(int /*socket*/, long *hsin, void */*sin*/, GBDATA */*gbd*/) { |
---|
1085 | gb_server_data *hs = (gb_server_data *) hsin; |
---|
1086 | hs->wait_for_new_request--; |
---|
1087 | return GBCM_SERVER_OK_WAIT; |
---|
1088 | } |
---|
1089 | |
---|
1090 | static GBCM_ServerResult gbcms_talking_obsolete(int /*socket*/, long */*hsin*/, void */*sin*/, GBDATA */*gbd*/) { |
---|
1091 | fputs("Obsolete server function called\n", stderr); |
---|
1092 | return GBCM_SERVER_FAULT; |
---|
1093 | } |
---|
1094 | |
---|
1095 | // ----------------------- |
---|
1096 | // server talking |
---|
1097 | |
---|
1098 | typedef GBCM_ServerResult (*TalkingFunction)(int socket, long *hsin, void *sin, GBDATA *gbd); |
---|
1099 | |
---|
1100 | static TalkingFunction aisc_talking_functions[] = { |
---|
1101 | gbcms_talking_unfold, // GBCM_COMMAND_UNFOLD |
---|
1102 | gbcms_talking_get_update, // GBCM_COMMAND_GET_UPDATA |
---|
1103 | gbcms_talking_put_update, // GBCM_COMMAND_PUT_UPDATE |
---|
1104 | gbcms_talking_updated, // GBCM_COMMAND_UPDATED |
---|
1105 | gbcms_talking_begin_transaction, // GBCM_COMMAND_BEGIN_TRANSACTION |
---|
1106 | gbcms_talking_commit_transaction, // GBCM_COMMAND_COMMIT_TRANSACTION |
---|
1107 | gbcms_talking_abort_transaction, // GBCM_COMMAND_ABORT_TRANSACTION |
---|
1108 | gbcms_talking_init_transaction, // GBCM_COMMAND_INIT_TRANSACTION |
---|
1109 | gbcms_talking_find, // GBCM_COMMAND_FIND |
---|
1110 | gbcms_talking_close, // GBCM_COMMAND_CLOSE |
---|
1111 | gbcms_talking_obsolete, |
---|
1112 | gbcms_talking_key_alloc, // GBCM_COMMAND_KEY_ALLOC |
---|
1113 | gbcms_talking_undo, // GBCM_COMMAND_UNDO |
---|
1114 | gbcms_talking_disable_wait_for_new_request // GBCM_COMMAND_DONT_WAIT |
---|
1115 | }; |
---|
1116 | |
---|
1117 | static GBCM_ServerResult gbcms_talking(int con, long *hs, void *sin) { |
---|
1118 | gbcm_read_flush(); |
---|
1119 | |
---|
1120 | next_command : |
---|
1121 | |
---|
1122 | long buf[3]; |
---|
1123 | long len = gbcm_read(con, (char *)buf, sizeof(long) * 3); |
---|
1124 | if (len == sizeof(long) * 3) { |
---|
1125 | long magic_number = buf[0]; |
---|
1126 | if ((magic_number & GBTUM_MAGIC_NUMBER_FILTER) != GBTUM_MAGIC_NUMBER) { |
---|
1127 | gbcm_read_flush(); |
---|
1128 | fprintf(stderr, "Illegal Access\n"); |
---|
1129 | return GBCM_SERVER_FAULT; |
---|
1130 | } |
---|
1131 | magic_number &= ~GBTUM_MAGIC_NUMBER_FILTER; |
---|
1132 | GBCM_ServerResult error = (aisc_talking_functions[magic_number])(con, hs, sin, (GBDATA *)buf[2]); |
---|
1133 | if (error == GBCM_SERVER_OK_WAIT) { |
---|
1134 | goto next_command; |
---|
1135 | } |
---|
1136 | gbcm_read_flush(); |
---|
1137 | return error ? error : GBCM_SERVER_OK; |
---|
1138 | } |
---|
1139 | else { |
---|
1140 | return GBCM_SERVER_FAULT; |
---|
1141 | } |
---|
1142 | } |
---|
1143 | |
---|
1144 | bool GBCMS_accept_calls(GBDATA *gbd, bool wait_extra_time) { |
---|
1145 | // returns true if served |
---|
1146 | |
---|
1147 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1148 | if (!Main->server_data) return false; |
---|
1149 | if (Main->get_transaction_level()) return false; |
---|
1150 | |
---|
1151 | gb_server_data *hs = Main->server_data; |
---|
1152 | timeval timeout; |
---|
1153 | |
---|
1154 | if (wait_extra_time) { |
---|
1155 | timeout.tv_sec = 0; |
---|
1156 | timeout.tv_usec = 100000; // 100 ms |
---|
1157 | } |
---|
1158 | else { |
---|
1159 | timeout.tv_sec = (int)(hs->timeout / 1000); |
---|
1160 | timeout.tv_usec = (hs->timeout % 1000) * 1000; |
---|
1161 | } |
---|
1162 | if (wait_extra_time) { |
---|
1163 | hs->wait_for_new_request = 1; |
---|
1164 | } |
---|
1165 | else { |
---|
1166 | hs->wait_for_new_request = 0; |
---|
1167 | } |
---|
1168 | |
---|
1169 | { |
---|
1170 | fd_set set; |
---|
1171 | fd_set setex; |
---|
1172 | |
---|
1173 | FD_ZERO(&set); |
---|
1174 | FD_ZERO(&setex); |
---|
1175 | FD_SET(hs->hso, &set); |
---|
1176 | FD_SET(hs->hso, &setex); |
---|
1177 | |
---|
1178 | for (Socinf *si=hs->soci; si; si=si->next) { |
---|
1179 | FD_SET(si->socket, &set); |
---|
1180 | FD_SET(si->socket, &setex); |
---|
1181 | } |
---|
1182 | |
---|
1183 | { |
---|
1184 | long anz; |
---|
1185 | if (hs->timeout>=0) { |
---|
1186 | anz = select(FD_SETSIZE, FD_SET_TYPE &set, NULL, FD_SET_TYPE &setex, &timeout); |
---|
1187 | } |
---|
1188 | else { |
---|
1189 | anz = select(FD_SETSIZE, FD_SET_TYPE &set, NULL, FD_SET_TYPE &setex, 0); |
---|
1190 | } |
---|
1191 | |
---|
1192 | if (anz==-1) return false; |
---|
1193 | if (!anz) return false; // timed out |
---|
1194 | } |
---|
1195 | |
---|
1196 | |
---|
1197 | if (FD_ISSET(hs->hso, &set)) { |
---|
1198 | int con = accept(hs->hso, NULL, 0); |
---|
1199 | if (con>0) { |
---|
1200 | long optval[1]; |
---|
1201 | Socinf *sptr = (Socinf *)GB_calloc(sizeof(Socinf), 1); |
---|
1202 | if (!sptr) return 0; |
---|
1203 | sptr->next = hs->soci; |
---|
1204 | sptr->socket = con; |
---|
1205 | hs->soci=sptr; |
---|
1206 | hs->nsoc++; |
---|
1207 | optval[0] = 1; |
---|
1208 | setsockopt(con, IPPROTO_TCP, TCP_NODELAY, (char *)optval, 4); |
---|
1209 | } |
---|
1210 | } |
---|
1211 | else { |
---|
1212 | Socinf *si_last = 0; |
---|
1213 | Socinf *si_next; |
---|
1214 | |
---|
1215 | for (Socinf *si=hs->soci; si; si_last=si, si=si_next) { |
---|
1216 | si_next = si->next; |
---|
1217 | |
---|
1218 | GBCM_ServerResult error = GBCM_SERVER_OK; |
---|
1219 | if (FD_ISSET(si->socket, &set)) { |
---|
1220 | error = gbcms_talking(si->socket, (long *)hs, (void *)si); |
---|
1221 | if (GBCM_SERVER_OK == error) { |
---|
1222 | hs->wait_for_new_request ++; |
---|
1223 | continue; |
---|
1224 | } |
---|
1225 | } else if (!FD_ISSET(si->socket, &setex)) continue; |
---|
1226 | |
---|
1227 | // kill socket |
---|
1228 | |
---|
1229 | if (close(si->socket)) { |
---|
1230 | printf("aisc_accept_calls: "); |
---|
1231 | printf("couldn't close socket errno = %i!\n", errno); |
---|
1232 | } |
---|
1233 | |
---|
1234 | hs->nsoc--; |
---|
1235 | if (si==hs->soci) { // first one |
---|
1236 | hs->soci = si->next; |
---|
1237 | } |
---|
1238 | else { |
---|
1239 | si_last->next = si->next; |
---|
1240 | } |
---|
1241 | if (si->username) { |
---|
1242 | gbcm_logout(Main, si->username); |
---|
1243 | } |
---|
1244 | g_bcms_delete_Socinf(si); |
---|
1245 | si = 0; |
---|
1246 | |
---|
1247 | if (error != GBCM_SERVER_ABORTED) { |
---|
1248 | fprintf(stdout, "ARB_DB_SERVER: a client died abnormally\n"); |
---|
1249 | } |
---|
1250 | break; |
---|
1251 | } |
---|
1252 | } |
---|
1253 | |
---|
1254 | } |
---|
1255 | if (hs->wait_for_new_request>0) { |
---|
1256 | return true; |
---|
1257 | } |
---|
1258 | return false; |
---|
1259 | } |
---|
1260 | |
---|
1261 | |
---|
1262 | #define SEND_ERROR() GBS_global_string("cannot send data to server (errcode=%i)", __LINE__) |
---|
1263 | |
---|
1264 | GB_ERROR gbcm_unfold_client(GBCONTAINER *gbc, long deep, long index_pos) { |
---|
1265 | // goes to header: __ATTR__USERESULT |
---|
1266 | |
---|
1267 | /* read data from a server |
---|
1268 | * deep = -1 read whole data |
---|
1269 | * deep = 0...n read to deep |
---|
1270 | * index_pos == -1 read all clients |
---|
1271 | * index_pos == -2 read all clients + header array |
---|
1272 | */ |
---|
1273 | |
---|
1274 | GB_ERROR error = NULL; |
---|
1275 | int socket = GBCONTAINER_MAIN(gbc)->c_link->socket; |
---|
1276 | gbcm_read_flush(); |
---|
1277 | |
---|
1278 | if (gbcm_write_two (socket, GBCM_COMMAND_UNFOLD, gbc->server_id)) error = SEND_ERROR(); |
---|
1279 | else if (gbcm_write_two (socket, GBCM_COMMAND_SETDEEP, deep)) error = SEND_ERROR(); |
---|
1280 | else if (gbcm_write_two (socket, GBCM_COMMAND_SETINDEX, index_pos)) error = SEND_ERROR(); |
---|
1281 | else if (gbcm_write_flush(socket)) error = SEND_ERROR(); |
---|
1282 | else { |
---|
1283 | long buffer[256]; |
---|
1284 | long irror = 0; |
---|
1285 | if (index_pos == -2) { |
---|
1286 | irror = gbcm_read_bin(socket, 0, buffer, 0, gbc, 0); |
---|
1287 | } |
---|
1288 | else { |
---|
1289 | long nitems; |
---|
1290 | if (gbcm_read_two(socket, GBCM_COMMAND_SEND_COUNT, 0, &nitems)) irror = 1; |
---|
1291 | else { |
---|
1292 | for (long item = 0; !irror && item<nitems; item++) { |
---|
1293 | irror = gbcm_read_bin(socket, gbc, buffer, 0, 0, 0); |
---|
1294 | } |
---|
1295 | } |
---|
1296 | } |
---|
1297 | |
---|
1298 | if (irror) { |
---|
1299 | error = GB_export_errorf("GB_unfold (%s) read error", GB_read_key_pntr(gbc)); |
---|
1300 | } |
---|
1301 | else { |
---|
1302 | gbcm_read_flush(); |
---|
1303 | if (index_pos < 0) { |
---|
1304 | gbc->flags2.folded_container = 0; |
---|
1305 | } |
---|
1306 | } |
---|
1307 | } |
---|
1308 | |
---|
1309 | return error; |
---|
1310 | } |
---|
1311 | |
---|
1312 | // ------------------------- |
---|
1313 | // Client functions |
---|
1314 | |
---|
1315 | #if defined(WARN_TODO) |
---|
1316 | #warning rewrite gbcmc_... (error handling - do not export) |
---|
1317 | #endif |
---|
1318 | |
---|
1319 | GB_ERROR gbcmc_begin_sendupdate(GBDATA *gbd) { |
---|
1320 | if (gbcm_write_two(GB_MAIN(gbd)->c_link->socket, GBCM_COMMAND_PUT_UPDATE, gbd->server_id)) { |
---|
1321 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1322 | } |
---|
1323 | return 0; |
---|
1324 | } |
---|
1325 | |
---|
1326 | GB_ERROR gbcmc_end_sendupdate(GBDATA *gbd) { |
---|
1327 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1328 | int socket = Main->c_link->socket; |
---|
1329 | if (gbcm_write_two(socket, GBCM_COMMAND_PUT_UPDATE_END, gbd->server_id)) { |
---|
1330 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1331 | } |
---|
1332 | |
---|
1333 | gbcm_write_flush(socket); |
---|
1334 | while (1) { |
---|
1335 | long buffer[2]; |
---|
1336 | if (gbcm_read(socket, (char *)&(buffer[0]), sizeof(long)*2) != sizeof(long)*2) { |
---|
1337 | return GB_export_error("ARB_DB READ ON SOCKET FAILED"); |
---|
1338 | } |
---|
1339 | gbd = (GBDATA *)buffer[0]; |
---|
1340 | if (!gbd) break; |
---|
1341 | gbd->server_id = buffer[1]; |
---|
1342 | GBS_write_numhash(Main->remote_hash, gbd->server_id, (long)gbd); |
---|
1343 | } |
---|
1344 | gbcm_read_flush(); |
---|
1345 | return 0; |
---|
1346 | } |
---|
1347 | |
---|
1348 | GB_ERROR gbcmc_sendupdate_create(GBDATA *gbd) { |
---|
1349 | GBCONTAINER *father = GB_FATHER(gbd); |
---|
1350 | if (!father) return GB_export_errorf("internal error #2453:%s", GB_KEY(gbd)); |
---|
1351 | |
---|
1352 | int socket = GB_MAIN(father)->c_link->socket; |
---|
1353 | if (gbcm_write_two(socket, GBCM_COMMAND_PUT_UPDATE_CREATE, father->server_id)) { |
---|
1354 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1355 | } |
---|
1356 | |
---|
1357 | long *buffer = (long *)GB_give_buffer(1014); |
---|
1358 | GB_ERROR error = gbcm_write_bin(socket, gbd, buffer, 0, -1, 1); |
---|
1359 | return error; |
---|
1360 | } |
---|
1361 | |
---|
1362 | GB_ERROR gbcmc_sendupdate_delete(GBDATA *gbd) { |
---|
1363 | if (gbcm_write_two(GB_MAIN(gbd)->c_link->socket, GBCM_COMMAND_PUT_UPDATE_DELETE, gbd->server_id)) { |
---|
1364 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1365 | } |
---|
1366 | return 0; |
---|
1367 | } |
---|
1368 | |
---|
1369 | GB_ERROR gbcmc_sendupdate_update(GBDATA *gbd, int send_headera) { |
---|
1370 | GBCONTAINER *father = GB_FATHER(gbd); |
---|
1371 | if (!father) return GB_export_errorf("internal error #2453 %s", GB_KEY(gbd)); |
---|
1372 | |
---|
1373 | int socket = GB_MAIN(father)->c_link->socket; |
---|
1374 | if (gbcm_write_two(socket, GBCM_COMMAND_PUT_UPDATE_UPDATE, gbd->server_id)) { |
---|
1375 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1376 | } |
---|
1377 | |
---|
1378 | long *buffer = (long *)GB_give_buffer(1016); |
---|
1379 | return gbcm_write_bin(socket, gbd, buffer, 0, 0, send_headera); |
---|
1380 | } |
---|
1381 | |
---|
1382 | static GB_ERROR gbcmc_read_keys(int socket, GBDATA *gbd) { // @@@ move into GB_MAIN_TYPE? |
---|
1383 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1384 | long buffer[2]; |
---|
1385 | if (gbcm_read(socket, (char *)buffer, sizeof(long)*2) != sizeof(long)*2) { |
---|
1386 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 6336"); |
---|
1387 | } |
---|
1388 | |
---|
1389 | long size = buffer[0]; |
---|
1390 | Main->first_free_key = buffer[1]; |
---|
1391 | gb_create_key_array(Main, (int)size); |
---|
1392 | |
---|
1393 | for (int i=1; i<size; i++) { |
---|
1394 | if (gbcm_read(socket, (char *)buffer, sizeof(long)*2) != sizeof(long)*2) { |
---|
1395 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 6253"); |
---|
1396 | } |
---|
1397 | |
---|
1398 | Main->keys[i].nref = buffer[0]; // to control malloc_index |
---|
1399 | Main->keys[i].next_free_key = buffer[1]; // to control malloc_index |
---|
1400 | |
---|
1401 | char *key = gbcm_read_string(socket); |
---|
1402 | if (key) { |
---|
1403 | GBS_write_hash(Main->key_2_index_hash, key, i); |
---|
1404 | if (Main->keys[i].key) free (Main->keys[i].key); |
---|
1405 | Main->keys[i].key = key; |
---|
1406 | } |
---|
1407 | } |
---|
1408 | Main->keycnt = (int)size; |
---|
1409 | return 0; |
---|
1410 | } |
---|
1411 | |
---|
1412 | GB_ERROR gbcmc_begin_transaction(GBDATA *gbd) { |
---|
1413 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1414 | int socket = Main->c_link->socket; |
---|
1415 | long *buffer = (long *)GB_give_buffer(1026); |
---|
1416 | |
---|
1417 | if (gbcm_write_two(socket, GBCM_COMMAND_BEGIN_TRANSACTION, Main->clock)) { |
---|
1418 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1419 | } |
---|
1420 | |
---|
1421 | if (gbcm_write_flush(socket)) { |
---|
1422 | return GB_export_error("ARB_DB CLIENT ERROR send failed 1626"); |
---|
1423 | } |
---|
1424 | |
---|
1425 | { |
---|
1426 | long server_clock; |
---|
1427 | if (gbcm_read_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, 0, &server_clock)) { |
---|
1428 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 3656"); |
---|
1429 | } |
---|
1430 | Main->clock = server_clock; |
---|
1431 | } |
---|
1432 | |
---|
1433 | while (1) { |
---|
1434 | if (gbcm_read(socket, (char *)buffer, sizeof(long)*2) != sizeof(long)*2) { |
---|
1435 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 6435"); |
---|
1436 | } |
---|
1437 | |
---|
1438 | long d = buffer[1]; |
---|
1439 | GBDATA *gb2 = (GBDATA *)GBS_read_numhash(Main->remote_hash, d); |
---|
1440 | long mode; |
---|
1441 | if (gb2) { |
---|
1442 | mode = gb2->flags2.folded_container |
---|
1443 | ? -1 // read container |
---|
1444 | : 0; // read all |
---|
1445 | } |
---|
1446 | else { |
---|
1447 | mode = -2; // read nothing |
---|
1448 | } |
---|
1449 | |
---|
1450 | switch (buffer[0]) { |
---|
1451 | case GBCM_COMMAND_PUT_UPDATE_UPDATE: |
---|
1452 | if (gbcm_read_bin(socket, 0, buffer, mode, gb2, 0)) { |
---|
1453 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 2456"); |
---|
1454 | } |
---|
1455 | if (gb2) { |
---|
1456 | gb2->create_extended(); |
---|
1457 | gb2->touch_update(Main->clock); |
---|
1458 | } |
---|
1459 | break; |
---|
1460 | case GBCM_COMMAND_PUT_UPDATE_CREATE: |
---|
1461 | if (gbcm_read_bin(socket, gb2->as_container(), buffer, mode, 0, 0)) { |
---|
1462 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 4236"); |
---|
1463 | } |
---|
1464 | if (gb2) { |
---|
1465 | gb2->create_extended(); |
---|
1466 | gb2->touch_creation_and_update(Main->clock); |
---|
1467 | } |
---|
1468 | break; |
---|
1469 | case GBCM_COMMAND_PUT_UPDATE_DELETE: |
---|
1470 | if (gb2) gb_delete_entry(gb2); |
---|
1471 | break; |
---|
1472 | case GBCM_COMMAND_PUT_UPDATE_KEYS: { |
---|
1473 | GB_ERROR error = gbcmc_read_keys(socket, gbd); |
---|
1474 | if (error) return error; |
---|
1475 | break; |
---|
1476 | } |
---|
1477 | case GBCM_COMMAND_PUT_UPDATE_END: |
---|
1478 | goto endof_gbcmc_begin_transaction; |
---|
1479 | |
---|
1480 | default: |
---|
1481 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 6574"); |
---|
1482 | } |
---|
1483 | } |
---|
1484 | |
---|
1485 | endof_gbcmc_begin_transaction : |
---|
1486 | gbcm_read_flush(); |
---|
1487 | return 0; |
---|
1488 | } |
---|
1489 | |
---|
1490 | GB_ERROR gbcmc_init_transaction(GBCONTAINER *gbc) { |
---|
1491 | GB_ERROR error = 0; |
---|
1492 | GB_MAIN_TYPE *Main = GBCONTAINER_MAIN(gbc); |
---|
1493 | int socket = Main->c_link->socket; |
---|
1494 | |
---|
1495 | if (gbcm_write_two(socket, GBCM_COMMAND_INIT_TRANSACTION, Main->clock)) { |
---|
1496 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbc)); |
---|
1497 | } |
---|
1498 | gbcm_write_string(socket, Main->this_user->username); |
---|
1499 | if (gbcm_write_flush(socket)) { |
---|
1500 | return GB_export_error("ARB_DB CLIENT ERROR send failed 1426"); |
---|
1501 | } |
---|
1502 | |
---|
1503 | { |
---|
1504 | long server_clock; |
---|
1505 | if (gbcm_read_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, 0, &server_clock)) { |
---|
1506 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 3456"); |
---|
1507 | } |
---|
1508 | Main->clock = server_clock; |
---|
1509 | } |
---|
1510 | |
---|
1511 | long buffer[4]; |
---|
1512 | if (gbcm_read_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, 0, buffer)) { |
---|
1513 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 3654"); |
---|
1514 | }; |
---|
1515 | gbc->server_id = buffer[0]; |
---|
1516 | |
---|
1517 | if (gbcm_read_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, 0, buffer)) { |
---|
1518 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 3654"); |
---|
1519 | }; |
---|
1520 | Main->this_user->userid = (int)buffer[0]; |
---|
1521 | Main->this_user->userbit = 1<<((int)buffer[0]); |
---|
1522 | |
---|
1523 | GBS_write_numhash(Main->remote_hash, gbc->server_id, (long)gbc); |
---|
1524 | |
---|
1525 | if (gbcm_read(socket, (char *)buffer, 2 * sizeof(long)) != 2 * sizeof(long)) { |
---|
1526 | return GB_export_error("ARB_DB CLIENT ERROR receive failed 2336"); |
---|
1527 | } |
---|
1528 | error = gbcmc_read_keys(socket, gbc); |
---|
1529 | if (error) return error; |
---|
1530 | |
---|
1531 | gbcm_read_flush(); |
---|
1532 | return 0; |
---|
1533 | } |
---|
1534 | |
---|
1535 | GB_ERROR gbcmc_commit_transaction(GBDATA *gbd) { |
---|
1536 | int socket = GB_MAIN(gbd)->c_link->socket; |
---|
1537 | if (gbcm_write_two(socket, GBCM_COMMAND_COMMIT_TRANSACTION, gbd->server_id)) { |
---|
1538 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1539 | } |
---|
1540 | |
---|
1541 | if (gbcm_write_flush(socket)) { |
---|
1542 | return GB_export_error("ARB_DB CLIENT ERROR send failed"); |
---|
1543 | } |
---|
1544 | |
---|
1545 | long dummy; |
---|
1546 | gbcm_read_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, 0, &dummy); |
---|
1547 | gbcm_read_flush(); |
---|
1548 | return 0; |
---|
1549 | } |
---|
1550 | GB_ERROR gbcmc_abort_transaction(GBDATA *gbd) { |
---|
1551 | int socket = GB_MAIN(gbd)->c_link->socket; |
---|
1552 | if (gbcm_write_two(socket, GBCM_COMMAND_ABORT_TRANSACTION, gbd->server_id)) { |
---|
1553 | return GB_export_errorf("Cannot send '%s' to server", GB_KEY(gbd)); |
---|
1554 | } |
---|
1555 | |
---|
1556 | if (gbcm_write_flush(socket)) { |
---|
1557 | return GB_export_error("ARB_DB CLIENT ERROR send failed"); |
---|
1558 | } |
---|
1559 | |
---|
1560 | long dummy; |
---|
1561 | gbcm_read_two(socket, GBCM_COMMAND_TRANSACTION_RETURN, 0, &dummy); |
---|
1562 | gbcm_read_flush(); |
---|
1563 | return 0; |
---|
1564 | } |
---|
1565 | |
---|
1566 | GB_ERROR gbcms_add_to_delete_list(GBDATA *gbd) { |
---|
1567 | gb_server_data *hs = GB_MAIN(gbd)->server_data; |
---|
1568 | |
---|
1569 | if (hs && hs->soci) { |
---|
1570 | gbcms_delete_list *dl = (gbcms_delete_list *)gbm_get_mem(sizeof(gbcms_delete_list), GBM_CB_INDEX); |
---|
1571 | |
---|
1572 | dl->creation_date = gbd->creation_date(); |
---|
1573 | dl->update_date = gbd->update_date(); |
---|
1574 | dl->gbd = gbd; |
---|
1575 | |
---|
1576 | if (!hs->del_first) { |
---|
1577 | hs->del_first = hs->del_last = dl; |
---|
1578 | } |
---|
1579 | else { |
---|
1580 | hs->del_last->next = dl; |
---|
1581 | hs->del_last = dl; |
---|
1582 | } |
---|
1583 | } |
---|
1584 | return 0; |
---|
1585 | } |
---|
1586 | |
---|
1587 | long GB_read_clients(GBDATA *gbd) { |
---|
1588 | // returns number of clients or |
---|
1589 | // -1 if not called from server |
---|
1590 | |
---|
1591 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1592 | long clients = -1; |
---|
1593 | |
---|
1594 | if (Main->is_server()) { |
---|
1595 | gb_server_data *hs = Main->server_data; |
---|
1596 | clients = hs ? hs->nsoc : 0; |
---|
1597 | } |
---|
1598 | |
---|
1599 | return clients; |
---|
1600 | } |
---|
1601 | |
---|
1602 | bool GB_is_server(GBDATA *gbd) { |
---|
1603 | return GB_MAIN(gbd)->is_server(); |
---|
1604 | } |
---|
1605 | |
---|
1606 | static GB_ERROR gbcmc_unfold_list(int socket, GBDATA * gbd) { |
---|
1607 | GB_ERROR error = NULL; |
---|
1608 | |
---|
1609 | long readvar[2]; |
---|
1610 | if (!gbcm_read(socket, (char *) readvar, sizeof(long) * 2)) { |
---|
1611 | error = GB_export_error("receive failed"); |
---|
1612 | } |
---|
1613 | else { |
---|
1614 | GBCONTAINER *gb_client = (GBCONTAINER*)readvar[1]; |
---|
1615 | if (gb_client) { |
---|
1616 | error = gbcmc_unfold_list(socket, gbd); |
---|
1617 | if (!error) { |
---|
1618 | gb_client = (GBCONTAINER *)GBS_read_numhash(GB_MAIN(gbd)->remote_hash, (long) gb_client); |
---|
1619 | gb_unfold(gb_client, 0, (int)readvar[0]); |
---|
1620 | } |
---|
1621 | } |
---|
1622 | } |
---|
1623 | return error; |
---|
1624 | } |
---|
1625 | |
---|
1626 | GBDATA *GBCMC_find(GBDATA *gbd, const char *key, GB_TYPES type, const char *str, GB_CASE case_sens, GB_SEARCH_TYPE gbs) { |
---|
1627 | // perform search in DB server (from DB client) |
---|
1628 | union { |
---|
1629 | GBDATA *gbd; |
---|
1630 | long l; |
---|
1631 | } result; |
---|
1632 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1633 | |
---|
1634 | int socket; |
---|
1635 | if (Main->is_server()) { |
---|
1636 | gb_assert(0); // GBCMC_find may only be used in DB clients |
---|
1637 | return (GBDATA *)-1; |
---|
1638 | } |
---|
1639 | |
---|
1640 | socket = Main->c_link->socket; |
---|
1641 | |
---|
1642 | if (gbcm_write_two(socket, GBCM_COMMAND_FIND, gbd->server_id)) { |
---|
1643 | GB_export_error(SEND_ERROR()); |
---|
1644 | GB_print_error(); |
---|
1645 | return 0; |
---|
1646 | } |
---|
1647 | |
---|
1648 | gbcm_write_string(socket, key); |
---|
1649 | gbcm_write_long(socket, type); |
---|
1650 | switch (type) { |
---|
1651 | case GB_NONE: |
---|
1652 | break; |
---|
1653 | case GB_STRING: |
---|
1654 | gbcm_write_string(socket, str); |
---|
1655 | gbcm_write_long(socket, case_sens); |
---|
1656 | break; |
---|
1657 | case GB_INT: |
---|
1658 | gbcm_write_long(socket, *(long*)str); |
---|
1659 | break; |
---|
1660 | default: |
---|
1661 | gb_assert(0); |
---|
1662 | GB_export_errorf("GBCMC_find: Illegal data type (%i)", type); |
---|
1663 | GB_print_error(); |
---|
1664 | return 0; |
---|
1665 | } |
---|
1666 | |
---|
1667 | gbcm_write_long(socket, gbs); |
---|
1668 | |
---|
1669 | if (gbcm_write_flush(socket)) { |
---|
1670 | GB_export_error("ARB_DB CLIENT ERROR send failed"); |
---|
1671 | GB_print_error(); |
---|
1672 | return 0; |
---|
1673 | } |
---|
1674 | gbcm_read_two(socket, GBCM_COMMAND_FIND_ERG, 0, &result.l); |
---|
1675 | if (result.gbd) { |
---|
1676 | gbcmc_unfold_list(socket, gbd); |
---|
1677 | result.l = GBS_read_numhash(Main->remote_hash, result.l); |
---|
1678 | } |
---|
1679 | gbcm_read_flush(); |
---|
1680 | return result.gbd; |
---|
1681 | } |
---|
1682 | |
---|
1683 | |
---|
1684 | long gbcmc_key_alloc(GBDATA *gbd, const char *key) { |
---|
1685 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1686 | if (Main->is_server()) return 0; |
---|
1687 | |
---|
1688 | int socket = Main->c_link->socket; |
---|
1689 | if (gbcm_write_two(socket, GBCM_COMMAND_KEY_ALLOC, gbd->server_id)) { |
---|
1690 | GB_export_error(SEND_ERROR()); |
---|
1691 | GB_print_error(); |
---|
1692 | return 0; |
---|
1693 | } |
---|
1694 | |
---|
1695 | gbcm_write_string(socket, key); |
---|
1696 | |
---|
1697 | if (gbcm_write_flush(socket)) { |
---|
1698 | GB_export_error("ARB_DB CLIENT ERROR send failed"); |
---|
1699 | GB_print_error(); |
---|
1700 | return 0; |
---|
1701 | } |
---|
1702 | long result; |
---|
1703 | gbcm_read_two(socket, GBCM_COMMAND_KEY_ALLOC_RES, 0, &result); |
---|
1704 | gbcm_read_flush(); |
---|
1705 | return result; |
---|
1706 | } |
---|
1707 | |
---|
1708 | GB_ERROR gbcmc_send_undo_commands(GBDATA *gbd, enum gb_undo_commands command) { // goes to header: __ATTR__USERESULT |
---|
1709 | // send an undo command |
---|
1710 | |
---|
1711 | GB_ERROR error = NULL; |
---|
1712 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1713 | |
---|
1714 | if (Main->is_server()) { |
---|
1715 | GB_internal_error("gbcmc_send_undo_commands: cannot call a server in a server"); |
---|
1716 | } |
---|
1717 | else { |
---|
1718 | int socket = Main->c_link->socket; |
---|
1719 | |
---|
1720 | if (gbcm_write_two (socket, GBCM_COMMAND_UNDO, gbd->server_id)) error = SEND_ERROR(); |
---|
1721 | else if (gbcm_write_two (socket, GBCM_COMMAND_UNDO_CMD, command)) error = SEND_ERROR(); |
---|
1722 | else if (gbcm_write_flush(socket)) error = SEND_ERROR(); |
---|
1723 | else { |
---|
1724 | error = gbcm_read_string(socket); |
---|
1725 | gbcm_read_flush(); |
---|
1726 | } |
---|
1727 | } |
---|
1728 | return error; |
---|
1729 | } |
---|
1730 | |
---|
1731 | char *gbcmc_send_undo_info_commands(GBDATA *gbd, enum gb_undo_commands command) { |
---|
1732 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1733 | if (Main->is_server()) { |
---|
1734 | GB_internal_error("gbcmc_send_undo_commands: cannot call a server in a server"); |
---|
1735 | return 0; |
---|
1736 | } |
---|
1737 | |
---|
1738 | int socket = Main->c_link->socket; |
---|
1739 | if (gbcm_write_two(socket, GBCM_COMMAND_UNDO, gbd->server_id)) { |
---|
1740 | GB_export_error("Cannot send data to Server 456"); |
---|
1741 | return 0; |
---|
1742 | } |
---|
1743 | if (gbcm_write_two(socket, GBCM_COMMAND_UNDO_CMD, command)) { |
---|
1744 | GB_export_error("Cannot send data to Server 96f"); |
---|
1745 | return 0; |
---|
1746 | } |
---|
1747 | if (gbcm_write_flush(socket)) { |
---|
1748 | GB_export_error("Cannot send data to Server 536"); |
---|
1749 | return 0; |
---|
1750 | } |
---|
1751 | |
---|
1752 | char *result = gbcm_read_string(socket); |
---|
1753 | gbcm_read_flush(); |
---|
1754 | return result; |
---|
1755 | } |
---|
1756 | |
---|
1757 | GB_ERROR GB_tell_server_dont_wait(GBDATA *gbd) { |
---|
1758 | GB_MAIN_TYPE *Main = GB_MAIN(gbd); |
---|
1759 | if (Main->is_server()) return 0; |
---|
1760 | |
---|
1761 | int socket = Main->c_link->socket; |
---|
1762 | if (gbcm_write_two(socket, GBCM_COMMAND_DONT_WAIT, gbd->server_id)) { |
---|
1763 | GB_export_error("Cannot send data to Server 456"); |
---|
1764 | return 0; |
---|
1765 | } |
---|
1766 | |
---|
1767 | return 0; |
---|
1768 | } |
---|
1769 | |
---|
1770 | // --------------------- |
---|
1771 | // Login/Logout |
---|
1772 | |
---|
1773 | |
---|
1774 | GB_ERROR gbcm_login(GBCONTAINER *gb_main, const char *loginname) { |
---|
1775 | // look for any free user and set this_user |
---|
1776 | int i; |
---|
1777 | GB_MAIN_TYPE *Main = GBCONTAINER_MAIN(gb_main); |
---|
1778 | |
---|
1779 | for (i = 0; i<GB_MAX_USERS; i++) { |
---|
1780 | gb_user *user = Main->users[i]; |
---|
1781 | if (user && strcmp(loginname, user->username) == 0) { |
---|
1782 | Main->this_user = user; |
---|
1783 | user->nusers++; |
---|
1784 | return 0; |
---|
1785 | } |
---|
1786 | } |
---|
1787 | for (i = 0; i<GB_MAX_USERS; i++) { |
---|
1788 | gb_user*& user = Main->users[i]; |
---|
1789 | if (!user) { |
---|
1790 | user = (gb_user *) GB_calloc(sizeof(gb_user), 1); |
---|
1791 | |
---|
1792 | user->username = strdup(loginname); |
---|
1793 | user->userid = i; |
---|
1794 | user->userbit = 1<<i; |
---|
1795 | user->nusers = 1; |
---|
1796 | |
---|
1797 | Main->this_user = user; |
---|
1798 | |
---|
1799 | return 0; |
---|
1800 | } |
---|
1801 | } |
---|
1802 | return GB_export_errorf("Too many users in this database: User '%s' ", loginname); |
---|
1803 | } |
---|
1804 | |
---|
1805 | GBCM_ServerResult gbcmc_close(gbcmc_comm * link) { |
---|
1806 | if (link->socket) { |
---|
1807 | if (gbcm_write_two(link->socket, GBCM_COMMAND_CLOSE, 0)) { |
---|
1808 | GB_export_error("Cannot send data to server"); |
---|
1809 | GB_print_error(); |
---|
1810 | return GBCM_SERVER_FAULT; |
---|
1811 | } |
---|
1812 | if (gbcm_write_flush(link->socket)) { |
---|
1813 | GB_export_error("ARB_DB CLIENT ERROR send failed"); |
---|
1814 | GB_print_error(); |
---|
1815 | return GBCM_SERVER_FAULT; |
---|
1816 | } |
---|
1817 | close(link->socket); |
---|
1818 | link->socket = 0; |
---|
1819 | } |
---|
1820 | if (link->unix_name) free(link->unix_name); // @@@ |
---|
1821 | free(link); |
---|
1822 | return GBCM_SERVER_OK; |
---|
1823 | } |
---|
1824 | |
---|
1825 | GB_ERROR gbcm_logout(GB_MAIN_TYPE *Main, const char *loginname) { |
---|
1826 | // if 'loginname' is NULL, the first logged-in user will be logged out |
---|
1827 | |
---|
1828 | if (!loginname) { |
---|
1829 | loginname = Main->users[0]->username; |
---|
1830 | gb_assert(loginname); |
---|
1831 | } |
---|
1832 | |
---|
1833 | for (long i = 0; i<GB_MAX_USERS; i++) { |
---|
1834 | gb_user*& user = Main->users[i]; |
---|
1835 | if (user && strcmp(loginname, user->username) == 0) { |
---|
1836 | user->nusers--; |
---|
1837 | if (user->nusers<=0) { // kill user and his projects |
---|
1838 | if (i) fprintf(stdout, "User '%s' has logged out\n", loginname); |
---|
1839 | free(user->username); |
---|
1840 | freenull(user); |
---|
1841 | } |
---|
1842 | return 0; |
---|
1843 | } |
---|
1844 | } |
---|
1845 | return GB_export_errorf("User '%s' not logged in", loginname); |
---|
1846 | } |
---|
1847 | |
---|
1848 | GB_ERROR GB_install_pid(int mode) { |
---|
1849 | /* tell the arb_clean script what programs are running. |
---|
1850 | * mode == 1 -> install |
---|
1851 | * mode == 0 -> never install |
---|
1852 | */ |
---|
1853 | |
---|
1854 | static long lastpid = -1; |
---|
1855 | GB_ERROR error = 0; |
---|
1856 | |
---|
1857 | if (mode == 0) { |
---|
1858 | gb_assert(lastpid == -1); // you have to call GB_install_pid(0) before opening any database! |
---|
1859 | lastpid = -25; // mark as "never install" |
---|
1860 | } |
---|
1861 | |
---|
1862 | if (lastpid != -25) { |
---|
1863 | long pid = getpid(); |
---|
1864 | |
---|
1865 | if (pid != lastpid) { // don't install pid multiple times |
---|
1866 | char *pidfile_name; |
---|
1867 | { |
---|
1868 | const char *user = GB_getenvUSER(); |
---|
1869 | const char *arb_pid = GB_getenv("ARB_PID"); // normally the pid of the 'arb' shell script |
---|
1870 | |
---|
1871 | gb_assert(user); |
---|
1872 | if (!arb_pid) arb_pid = ""; |
---|
1873 | |
---|
1874 | pidfile_name = GBS_global_string_copy("arb_pids_%s_%s", user, arb_pid); |
---|
1875 | } |
---|
1876 | |
---|
1877 | char *pid_fullname; |
---|
1878 | FILE *pidfile = GB_fopen_tempfile(pidfile_name, "at", &pid_fullname); |
---|
1879 | |
---|
1880 | if (!pidfile) { |
---|
1881 | error = GBS_global_string("GB_install_pid: %s", GB_await_error()); |
---|
1882 | } |
---|
1883 | else { |
---|
1884 | fprintf(pidfile, "%li ", pid); |
---|
1885 | lastpid = pid; // remember installed pid |
---|
1886 | fclose(pidfile); |
---|
1887 | } |
---|
1888 | |
---|
1889 | // ensure pid file is private, otherwise someone could inject PIDs which will be killed later |
---|
1890 | gb_assert(GB_is_privatefile(pid_fullname, false)); |
---|
1891 | |
---|
1892 | free(pid_fullname); |
---|
1893 | free(pidfile_name); |
---|
1894 | } |
---|
1895 | } |
---|
1896 | |
---|
1897 | return error; |
---|
1898 | } |
---|
1899 | |
---|