| 1 | // ============================================================= // |
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| 2 | // // |
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| 3 | // File : servercntrl.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 <servercntrl.h> |
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| 12 | |
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| 13 | #include <client_privat.h> |
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| 14 | #include <client.h> |
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| 15 | |
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| 16 | #include <arbdb.h> |
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| 17 | #include <arb_file.h> |
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| 18 | #include <arb_sleep.h> |
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| 19 | #include <ut_valgrinded.h> |
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| 20 | |
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| 21 | /* The following lines go to servercntrl.h |
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| 22 | * edit here, not there!! |
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| 23 | * call 'make proto' to update |
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| 24 | */ |
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| 25 | |
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| 26 | // AISC_MKPT_PROMOTE:#ifndef ARBDB_BASE_H |
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| 27 | // AISC_MKPT_PROMOTE:#include <arbdb_base.h> |
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| 28 | // AISC_MKPT_PROMOTE:#endif |
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| 29 | // AISC_MKPT_PROMOTE: |
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| 30 | // AISC_MKPT_PROMOTE:struct arb_params { |
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| 31 | // AISC_MKPT_PROMOTE: char *species_name; |
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| 32 | // AISC_MKPT_PROMOTE: char *extended_name; |
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| 33 | // AISC_MKPT_PROMOTE: char *alignment; |
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| 34 | // AISC_MKPT_PROMOTE: char *default_file; |
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| 35 | // AISC_MKPT_PROMOTE: char *field; |
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| 36 | // AISC_MKPT_PROMOTE: const char *field_default; |
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| 37 | // AISC_MKPT_PROMOTE: |
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| 38 | // AISC_MKPT_PROMOTE: int read_only; |
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| 39 | // AISC_MKPT_PROMOTE: |
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| 40 | // AISC_MKPT_PROMOTE: char *job_server; |
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| 41 | // AISC_MKPT_PROMOTE: char *db_server; |
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| 42 | // AISC_MKPT_PROMOTE: char *mgr_server; |
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| 43 | // AISC_MKPT_PROMOTE: char *pt_server; |
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| 44 | // AISC_MKPT_PROMOTE: |
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| 45 | // AISC_MKPT_PROMOTE: char *tcp; |
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| 46 | // AISC_MKPT_PROMOTE:}; |
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| 47 | // AISC_MKPT_PROMOTE: |
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| 48 | // AISC_MKPT_PROMOTE:enum SpawnMode { |
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| 49 | // AISC_MKPT_PROMOTE: WAIT_FOR_TERMINATION, |
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| 50 | // AISC_MKPT_PROMOTE: SPAWN_ASYNCHRONOUS, |
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| 51 | // AISC_MKPT_PROMOTE: SPAWN_DAEMONIZED, |
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| 52 | // AISC_MKPT_PROMOTE:}; |
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| 53 | |
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| 54 | #if defined(AISC_MAGIC_NUMBER) |
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| 55 | # undef AISC_MAGIC_NUMBER |
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| 56 | #endif |
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| 57 | |
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| 58 | |
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| 59 | #define TRIES 1 |
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| 60 | |
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| 61 | static struct gl_struct { |
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| 62 | aisc_com *link; |
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| 63 | AISC_Object com; |
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| 64 | |
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| 65 | gl_struct() |
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| 66 | : link(NULp), com(0x10000*1) // faked type id (matches main object, e.g. AN_MAIN or PT_MAIN) |
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| 67 | { } |
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| 68 | } glservercntrl; |
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| 69 | |
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| 70 | |
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| 71 | inline void make_async_call(char*& command) { |
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| 72 | freeset(command, GBS_global_string_copy("( %s ) &", command)); |
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| 73 | } |
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| 74 | |
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| 75 | char *createCallOnSocketHost(const char *host, const char *remotePrefix, const char *command, SpawnMode spawnmode, const char *logfile) { |
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| 76 | /*! transforms a shell-command |
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| 77 | * - use ssh if host is not local |
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| 78 | * - add wrappers for detached execution |
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| 79 | * @param host socket specification (may be 'host:port', 'host' or ':portOrSocketfile') |
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| 80 | * @param remotePrefix prefixed to command if it is executed on remote host (e.g. "$ARBHOME/bin/" -> uses value of environment variable ARBHOME on remote host!) |
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| 81 | * @param command the shell command to execute |
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| 82 | * @param spawnmode how to spawn: |
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| 83 | * WAIT_FOR_TERMINATION = run "command" |
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| 84 | * SPAWN_ASYNCHRONOUS = run "( command ) &" |
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| 85 | * SPAWN_DAEMONIZED = do not forward kill signals, remove from joblist and redirect output to logfile |
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| 86 | * @param logfile use with SPAWN_DAEMONIZED (mandatory; NULp otherwise) |
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| 87 | * @return a SSH system call for remote hosts and direct system calls for the local machine |
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| 88 | */ |
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| 89 | |
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| 90 | arb_assert((remotePrefix[0] == 0) || (strchr(remotePrefix, 0)[-1] == '/')); |
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| 91 | arb_assert(correlated(spawnmode == SPAWN_DAEMONIZED, logfile)); |
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| 92 | |
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| 93 | char *call = NULp; |
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| 94 | if (host && host[0]) { |
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| 95 | const char *hostPort = strchr(host, ':'); |
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| 96 | char *hostOnly = ARB_strpartdup(host, hostPort ? hostPort-1 : NULp); |
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| 97 | |
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| 98 | if (hostOnly[0] && !GB_host_is_local(hostOnly)) { |
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| 99 | char *quotedRemoteCommand = GBK_singlequote(GBS_global_string("%s%s", remotePrefix, command)); |
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| 100 | call = GBS_global_string_copy("ssh %s -n %s", hostOnly, quotedRemoteCommand); |
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| 101 | free(quotedRemoteCommand); |
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| 102 | } |
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| 103 | free(hostOnly); |
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| 104 | } |
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| 105 | |
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| 106 | if (!call) { |
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| 107 | call = ARB_strdup(command); |
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| 108 | make_valgrinded_call(call); // only on local host |
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| 109 | } |
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| 110 | |
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| 111 | switch (spawnmode) { |
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| 112 | case WAIT_FOR_TERMINATION: |
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| 113 | break; |
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| 114 | |
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| 115 | case SPAWN_ASYNCHRONOUS: |
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| 116 | make_async_call(call); |
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| 117 | break; |
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| 118 | |
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| 119 | case SPAWN_DAEMONIZED: { |
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| 120 | char *quotedLogfile = GBK_singlequote(logfile); |
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| 121 | char *quotedDaemonizingCall = GBK_singlequote(GBS_global_string("nohup %s >> %s 2>&1 & disown", call, quotedLogfile)); |
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| 122 | |
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| 123 | freeset(call, GBS_global_string_copy("bash -c %s", quotedDaemonizingCall)); |
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| 124 | |
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| 125 | free(quotedDaemonizingCall); |
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| 126 | free(quotedLogfile); |
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| 127 | break; |
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| 128 | } |
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| 129 | } |
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| 130 | |
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| 131 | return call; |
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| 132 | } |
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| 133 | |
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| 134 | GB_ERROR arb_start_server(const char *arb_tcp_env, int do_sleep) { |
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| 135 | const char *tcp_id; |
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| 136 | GB_ERROR error = NULp; |
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| 137 | |
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| 138 | if (!(tcp_id = GBS_read_arb_tcp(arb_tcp_env))) { |
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| 139 | error = GB_await_error(); |
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| 140 | } |
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| 141 | else { |
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| 142 | const char *server = strchr(tcp_id, 0) + 1; |
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| 143 | char *serverparams = NULp; |
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| 144 | |
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| 145 | /* concatenate all params behind server |
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| 146 | Note : changed behavior on 2007/Mar/09 -- ralf |
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| 147 | serverparams now is one space if nothing defined in arb_tcp.dat |
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| 148 | (previously was same as 'server' - most likely a bug) |
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| 149 | */ |
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| 150 | { |
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| 151 | const char *param = strchr(server, 0)+1; |
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| 152 | size_t plen = strlen(param); |
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| 153 | size_t alllen = 0; |
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| 154 | |
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| 155 | while (plen) { |
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| 156 | param += plen+1; |
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| 157 | alllen += plen+1; |
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| 158 | plen = strlen(param); |
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| 159 | } |
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| 160 | |
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| 161 | ARB_alloc(serverparams, alllen+1); |
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| 162 | { |
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| 163 | char *sp = serverparams; |
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| 164 | |
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| 165 | param = strchr(server, 0)+1; |
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| 166 | plen = strlen(param); |
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| 167 | if (!plen) sp++; |
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| 168 | else do { |
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| 169 | memcpy(sp, param, plen); |
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| 170 | sp[plen] = ' '; |
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| 171 | sp += plen+1; |
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| 172 | param += plen+1; |
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| 173 | plen = strlen(param); |
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| 174 | } while (plen); |
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| 175 | sp[-1] = 0; |
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| 176 | } |
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| 177 | } |
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| 178 | |
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| 179 | { |
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| 180 | char *command = NULp; |
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| 181 | const char *port = strchr(tcp_id, ':'); |
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| 182 | |
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| 183 | if (!port) { |
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| 184 | error = GB_export_errorf("Error: Missing ':' in socket definition of '%s' in file $(ARBHOME)/lib/arb_tcp.dat", arb_tcp_env); |
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| 185 | } |
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| 186 | else { |
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| 187 | // When arb is called from arb_launcher, ARB_SERVER_LOG gets set to the name of a logfile. |
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| 188 | // If ARB_SERVER_LOG is set here -> start servers daemonized here (see #492 for motivation) |
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| 189 | |
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| 190 | const char *serverlog = GB_getenv("ARB_SERVER_LOG"); |
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| 191 | SpawnMode spawnmode = serverlog ? SPAWN_DAEMONIZED : SPAWN_ASYNCHRONOUS; |
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| 192 | char *plainCommand = GBS_global_string_copy("%s %s '-T%s'", server, serverparams, port); // Note: quotes around -T added for testing only (remove@will) |
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| 193 | command = createCallOnSocketHost(tcp_id, "$ARBHOME/bin/", plainCommand, spawnmode, serverlog); |
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| 194 | free(plainCommand); |
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| 195 | } |
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| 196 | |
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| 197 | if (!error) { |
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| 198 | error = GBK_system(command); |
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| 199 | if (do_sleep) ARB_sleep(5, SEC); |
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| 200 | } |
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| 201 | free(command); |
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| 202 | } |
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| 203 | free(serverparams); |
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| 204 | } |
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| 205 | return error; |
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| 206 | } |
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| 207 | |
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| 208 | static GB_ERROR arb_wait_for_server(const char *arb_tcp_env, const char *tcp_id, int magic_number, struct gl_struct *serverctrl, int wait) { |
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| 209 | GB_ERROR error = NULp; |
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| 210 | serverctrl->link = aisc_open(tcp_id, serverctrl->com, magic_number, &error); |
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| 211 | |
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| 212 | if (!error && !serverctrl->link) { // no server running -> start one |
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| 213 | error = arb_start_server(arb_tcp_env, 0); |
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| 214 | while (!error && !serverctrl->link && wait) { |
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| 215 | ARB_sleep(1, SEC); |
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| 216 | wait--; |
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| 217 | if ((wait%10) == 0 && wait>0) { |
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| 218 | printf("Waiting for server '%s' to come up (%i seconds left)\n", arb_tcp_env, wait); |
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| 219 | } |
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| 220 | serverctrl->link = aisc_open(tcp_id, serverctrl->com, magic_number, &error); |
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| 221 | } |
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| 222 | } |
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| 223 | |
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| 224 | return error; |
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| 225 | } |
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| 226 | |
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| 227 | static GB_ERROR check_server_selected(const char *arb_tcp_env) { |
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| 228 | // check whether arb_tcp_env (normally created by GBS_ptserver_tag for pt-servers) |
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| 229 | // indicates that no pt-server has been selected by user. |
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| 230 | // |
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| 231 | // if so -> provide simple error to reduce confusion. |
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| 232 | |
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| 233 | if (strcmp(arb_tcp_env, "ARB_PT_SERVER-1") == 0) { |
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| 234 | return "No pt-server has been selected."; |
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| 235 | } |
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| 236 | return NULp; |
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| 237 | } |
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| 238 | |
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| 239 | GB_ERROR arb_look_and_start_server(long magic_number, const char *arb_tcp_env) { |
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| 240 | arb_assert(!GB_have_error()); |
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| 241 | |
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| 242 | GB_ERROR error = check_server_selected(arb_tcp_env); |
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| 243 | if (!error) { |
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| 244 | const char *tcp_id = GBS_read_arb_tcp(arb_tcp_env); |
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| 245 | const char *arb_tcp_dat = "$(ARBHOME)/lib/arb_tcp.dat"; |
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| 246 | |
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| 247 | if (!tcp_id) { |
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| 248 | error = GBS_global_string("Entry '%s' not found in %s (%s)", arb_tcp_env, arb_tcp_dat, GB_await_error()); |
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| 249 | } |
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| 250 | else { |
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| 251 | const char *file = GBS_scan_arb_tcp_param(tcp_id, "-d"); // find parameter behind '-d' |
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| 252 | |
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| 253 | if (!file) { |
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| 254 | error = GBS_global_string("Parameter -d missing for entry '%s' in %s", arb_tcp_env, arb_tcp_dat); |
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| 255 | } |
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| 256 | else { |
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| 257 | if (strcmp(file, "!ASSUME_RUNNING") == 0) { |
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| 258 | // assume pt-server is running on a host, w/o access to common network drive |
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| 259 | // i.e. we cannot check for the existence of the database file |
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| 260 | } |
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| 261 | else if (GB_size_of_file(file) <= 0) { |
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| 262 | if (strncmp(arb_tcp_env, "ARB_NAME_SERVER", 15) == 0) { |
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| 263 | char *dir = ARB_strdup(file); |
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| 264 | char *lastSlash = strrchr(dir, '/'); |
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| 265 | |
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| 266 | if (lastSlash) { |
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| 267 | lastSlash[0] = 0; // cut off file |
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| 268 | { |
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| 269 | const char *copy_cmd = GBS_global_string("cp %s/names.dat.template %s", dir, file); |
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| 270 | error = GBK_system(copy_cmd); |
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| 271 | } |
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| 272 | if (!error && GB_size_of_file(file) <= 0) { |
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| 273 | error = GBS_global_string("Cannot copy nameserver template (%s/names.dat.template missing?)", dir); |
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| 274 | } |
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| 275 | } |
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| 276 | else { |
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| 277 | error = GBS_global_string("Can't determine directory from '%s'", dir); |
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| 278 | } |
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| 279 | free(dir); |
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| 280 | } |
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| 281 | else if (strncmp(arb_tcp_env, "ARB_PT_SERVER", 13) == 0) { |
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| 282 | const char *nameOnly = strrchr(file, '/'); |
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| 283 | if (!nameOnly) nameOnly = file; |
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| 284 | |
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| 285 | error = GBS_global_string("PT_server '%s' has not been created yet.\n" |
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| 286 | " To create it follow these steps:\n" |
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| 287 | " 1. Start ARB on the whole database you want to use for probe match/design\n" |
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| 288 | " 2. Go to ARB_NTREE/Probes/PT_SERVER Admin\n" |
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| 289 | " 3. Select '%s' and press BUILD SERVER\n" |
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| 290 | " 4. Wait (up to hours, depending on your DB size)\n" |
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| 291 | " 5. Meanwhile read the help file: PT_SERVER: What Why and How", |
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| 292 | file, nameOnly); |
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| 293 | } |
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| 294 | else { |
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| 295 | error = GBS_global_string("The file '%s' is missing. \nUnable to start %s", file, arb_tcp_env); |
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| 296 | } |
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| 297 | } |
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| 298 | } |
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| 299 | |
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| 300 | if (!error) { |
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| 301 | error = arb_wait_for_server(arb_tcp_env, tcp_id, magic_number, &glservercntrl, 20); |
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| 302 | |
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| 303 | if (!error) { |
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| 304 | if (!glservercntrl.link) { // couldn't start server |
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| 305 | error = // | |
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| 306 | "ARB has problems to start a server! Possible reasons may be one\n" |
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| 307 | "or several of the following list:\n" |
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| 308 | "- the tcp_id (socket number) is already used by another program\n" |
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| 309 | " (doesnt apply to user-specific PTSERVERs; check $ARBHOME/lib/arb_tcp.dat versus /etc/services)\n" |
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| 310 | "- the server exited with error or has crashed.\n" |
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| 311 | " In case of PTSERVER, the failure might be caused by:\n" |
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| 312 | " - missing database in $ARBHOME/lib/pts/* (solution: update ptserver database)\n" |
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| 313 | " - wrong permissions of $ARBHOME/lib/pts/* (no read access)\n" |
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| 314 | " If you recently installed a new arb version, arb will continue\n" |
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| 315 | " to use your previous 'arb_tcp.dat', which might be out-of-date.\n" |
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| 316 | " Backup and remove it, then restart ARB. If it works now,\n" |
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| 317 | " compare your old 'arb_tcp.dat' with the new one for changes.\n" |
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| 318 | "- When using remote servers: login or network problems\n" |
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| 319 | ; |
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| 320 | } |
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| 321 | else { |
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| 322 | aisc_close(glservercntrl.link, glservercntrl.com); |
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| 323 | glservercntrl.link = NULp; |
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| 324 | } |
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| 325 | } |
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| 326 | } |
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| 327 | } |
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| 328 | } |
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| 329 | |
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| 330 | arb_assert(!GB_have_error()); |
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| 331 | return error; |
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| 332 | } |
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| 333 | |
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| 334 | GB_ERROR arb_look_and_kill_server(int magic_number, const char *arb_tcp_env) { |
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| 335 | GB_ERROR error = check_server_selected(arb_tcp_env); |
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| 336 | if (!error) { |
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| 337 | const char *tcp_id = GBS_read_arb_tcp(arb_tcp_env); |
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| 338 | if (!tcp_id) { |
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| 339 | error = GB_await_error(); |
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| 340 | } |
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| 341 | else { |
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| 342 | const char *server = strchr(tcp_id, 0)+1; |
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| 343 | |
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| 344 | glservercntrl.link = aisc_open(tcp_id, glservercntrl.com, magic_number, &error); |
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| 345 | if (glservercntrl.link) { |
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| 346 | aisc_close(glservercntrl.link, glservercntrl.com); |
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| 347 | glservercntrl.link = NULp; |
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| 348 | |
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| 349 | error = GBK_system(GBS_global_string("%s -kill -T%s &", server, tcp_id)); |
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| 350 | } |
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| 351 | else { |
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| 352 | error = "Server is not running"; |
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| 353 | } |
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| 354 | } |
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| 355 | } |
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| 356 | return error; |
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| 357 | } |
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| 358 | |
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| 359 | const char *arb_look_and_start_ptserver(int magic_number, int ptserver_id, GB_ERROR& error) { |
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| 360 | // return PT server info string (see GBS_read_arb_tcp for details) // @@@ fix doc |
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| 361 | // or NULp (in this case 'error' is set) |
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| 362 | |
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| 363 | const char *result = NULp; |
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| 364 | const char *server_tag = GBS_ptserver_tag(ptserver_id); |
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| 365 | |
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| 366 | error = arb_look_and_start_server(magic_number, server_tag); |
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| 367 | if (!error) { |
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| 368 | result = GBS_read_arb_tcp(server_tag); |
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| 369 | if (!result) error = GB_await_error(); |
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| 370 | } |
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| 371 | arb_assert(contradicted(result, error)); |
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| 372 | return result; |
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| 373 | } |
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| 374 | |
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| 375 | |
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| 376 | |
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| 377 | void arb_print_server_params() { |
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| 378 | printf("General server parameters (some maybe unused by this server):\n" |
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| 379 | " -s<name> sets species name to '<name>'\n" |
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| 380 | " -e<name> sets extended name to '<name>'\n" |
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| 381 | " -a<ali> sets alignment to '<ali>'\n" |
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| 382 | " -d<file> sets default file to '<file>'\n" |
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| 383 | " -f<field>=<def> sets DB field to '<field>' (using <def> as default)\n" |
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| 384 | " -r read-only mode\n" |
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| 385 | " -D<server> sets DB-server to '<server>' [default = ':']\n" |
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| 386 | " -J<server> sets job-server to '<server>' [default = 'ARB_JOB_SERVER']\n" |
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| 387 | " -M<server> sets MGR-server to '<server>' [default = 'ARB_MGR_SERVER']\n" |
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| 388 | " -P<server> sets PT-server to '<server>' [default = 'ARB_PT_SERVER']\n" |
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| 389 | " -T<[host]:port> sets TCP connection to '<[host]:port>'\n" |
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| 390 | ); |
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| 391 | } |
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| 392 | |
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| 393 | arb_params *arb_trace_argv(int *argc, const char **argv) { |
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| 394 | arb_params *erg = ARB_calloc<arb_params>(1); |
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| 395 | |
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| 396 | erg->db_server = ARB_strdup(":"); |
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| 397 | erg->job_server = ARB_strdup("ARB_JOB_SERVER"); |
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| 398 | erg->mgr_server = ARB_strdup("ARB_MGR_SERVER"); |
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| 399 | erg->pt_server = ARB_strdup("ARB_PT_SERVER"); |
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| 400 | |
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| 401 | int s, d; |
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| 402 | for (s=d=0; s<*argc; s++) { |
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| 403 | if (argv[s][0] == '-') { |
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| 404 | switch (argv[s][1]) { |
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| 405 | case 's': erg->species_name = ARB_strdup(argv[s]+2); break; |
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| 406 | case 'e': erg->extended_name = ARB_strdup(argv[s]+2); break; |
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| 407 | case 'a': erg->alignment = ARB_strdup(argv[s]+2); break; |
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| 408 | case 'd': erg->default_file = ARB_strdup(argv[s]+2); break; |
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| 409 | case 'f': { |
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| 410 | char *eq; |
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| 411 | erg->field = ARB_strdup(argv[s]+2); |
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| 412 | |
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| 413 | eq = strchr(erg->field, '='); |
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| 414 | if (eq) { |
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| 415 | erg->field_default = eq+1; |
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| 416 | eq[0] = 0; |
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| 417 | } |
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| 418 | else { |
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| 419 | erg->field_default = NULp; // this is illegal - error handling done in caller |
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| 420 | } |
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| 421 | break; |
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| 422 | } |
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| 423 | case 'r': erg->read_only = 1; break; |
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| 424 | case 'J': freedup(erg->job_server, argv[s]+2); break; |
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| 425 | case 'D': freedup(erg->db_server, argv[s]+2); break; |
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| 426 | case 'M': freedup(erg->mgr_server, argv[s]+2); break; |
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| 427 | case 'P': freedup(erg->pt_server, argv[s]+2); break; |
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| 428 | case 'T': { |
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| 429 | const char *ipport = argv[s]+2; |
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| 430 | if (ipport[0] == ':' && |
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| 431 | ipport[1] >= '0' && ipport[1] <= '9') { // port only -> assume localhost |
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| 432 | erg->tcp = GBS_global_string_copy("localhost%s", ipport); |
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| 433 | } |
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| 434 | else { |
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| 435 | erg->tcp = ARB_strdup(ipport); |
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| 436 | } |
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| 437 | break; |
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| 438 | } |
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| 439 | default: |
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| 440 | argv[d++] = argv[s]; |
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| 441 | break; |
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| 442 | } |
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| 443 | } |
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| 444 | else { |
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| 445 | argv[d++] = argv[s]; |
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| 446 | } |
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| 447 | } |
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| 448 | *argc = d; |
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| 449 | return erg; |
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| 450 | } |
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| 451 | |
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| 452 | void free_arb_params(arb_params *params) { |
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| 453 | free(params->species_name); |
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| 454 | free(params->extended_name); |
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| 455 | free(params->alignment); |
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| 456 | free(params->default_file); |
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| 457 | free(params->field); |
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| 458 | free(params->job_server); |
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| 459 | free(params->db_server); |
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| 460 | free(params->mgr_server); |
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| 461 | free(params->pt_server); |
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| 462 | free(params->tcp); |
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| 463 | |
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| 464 | free(params); |
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| 465 | } |
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| 466 | |
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| 467 | // -------------------------------------------------------------------------------- |
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| 468 | |
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| 469 | #if defined(UNIT_TESTS) && 0 |
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| 470 | |
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| 471 | // If you need tests in AISC_COM/C/client.c, put them here instead. |
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| 472 | |
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| 473 | #include <test_unit.h> |
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| 474 | |
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| 475 | void TEST_servercntrl() { |
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| 476 | TEST_REJECT(true); // would fail if test gets activated |
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| 477 | } |
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| 478 | |
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| 479 | #endif // UNIT_TESTS |
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| 480 | |
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