1 | /* INDI Server for protocol version 1.7. |
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2 | * Copyright (C) 2007 Elwood C. Downey ecdowney@clearskyinstitute.com |
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3 | |
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4 | This library is free software; you can redistribute it and/or |
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5 | modify it under the terms of the GNU Lesser General Public |
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6 | License as published by the Free Software Foundation; either |
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7 | version 2.1 of the License, or (at your option) any later version. |
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8 | |
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9 | This library is distributed in the hope that it will be useful, |
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10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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12 | Lesser General Public License for more details. |
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13 | |
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14 | You should have received a copy of the GNU Lesser General Public |
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15 | License along with this library; if not, write to the Free Software |
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16 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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17 | |
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18 | * argv lists names of Driver programs to run or sockets to connect for Devices. |
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19 | * Drivers are restarted if they exit or connection closes. |
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20 | * Each local Driver's stdin/out are assumed to provide INDI traffic and are |
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21 | * connected here via pipes. Local Drivers' stderr are connected to our |
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22 | * stderr with date stamp and driver name prepended. |
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23 | * We only support Drivers that advertise support for one Device. The problem |
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24 | * with multiple Devices in one Driver is without a way to know what they |
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25 | * _all_ are there is no way to avoid sending all messages to all Drivers. |
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26 | * Outbound messages are limited to Devices and Properties seen inbound. |
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27 | * Messages to Devices on sockets always include Device so the chained |
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28 | * indiserver will only pass back info from that Device. |
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29 | * All newXXX() received from one Client are echoed to all other Clients who |
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30 | * have shown an interest in the same Device and property. |
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31 | * |
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32 | * Implementation notes: |
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33 | * |
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34 | * We fork each driver and open a server socket listening for INDI clients. |
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35 | * Then forever we listen for new clients and pass traffic between clients and |
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36 | * drivers, subject to optimizations based on sniffing messages for matching |
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37 | * Devices and Properties. Since one message might be destined to more than |
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38 | * one client or device, they are queued and only removed after the last |
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39 | * consumer is finished. XMLEle are converted to linear strings before being |
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40 | * sent to optimize write system calls and avoid blocking to slow clients. |
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41 | * Clients that get more than maxqsiz bytes behind are shut down. |
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42 | */ |
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43 | |
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44 | #include <stdio.h> |
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45 | #include <stdlib.h> |
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46 | #include <stdarg.h> |
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47 | #include <signal.h> |
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48 | #include <string.h> |
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49 | #include <errno.h> |
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50 | #include <unistd.h> |
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51 | #include <time.h> |
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52 | #include <fcntl.h> |
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53 | #include <sys/time.h> |
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54 | #include <sys/types.h> |
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55 | #include <sys/stat.h> |
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56 | #include <sys/socket.h> |
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57 | #include <netinet/in.h> |
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58 | #include <netdb.h> |
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59 | #include <arpa/inet.h> |
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60 | |
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61 | #include "lilxml.h" |
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62 | #include "indiapi.h" |
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63 | #include "fq.h" |
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64 | |
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65 | #define INDIPORT 7624 /* default TCP/IP port to listen */ |
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66 | #define REMOTEDVR (-1234) /* invalid PID to flag remote drivers */ |
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67 | #define MAXRBUF 4096 /* max read buffering here */ |
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68 | #define MAXWSIZ 4096 /* max bytes/write */ |
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69 | #define DEFMAXQSIZ 10 /* default max q behind, MB */ |
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70 | |
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71 | /* associate a usage count with queuded client or device message */ |
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72 | typedef struct { |
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73 | int count; /* number of consumers left */ |
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74 | unsigned int cl; /* content length */ |
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75 | char *cp; /* content: buf or malloced */ |
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76 | char buf[MAXWSIZ]; /* local buf for most messages */ |
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77 | } Msg; |
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78 | |
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79 | /* BLOB handling, NEVER is the default */ |
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80 | typedef enum {B_NEVER=0, B_ALSO, B_ONLY} BLOBHandling; |
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81 | |
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82 | /* device + property name */ |
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83 | typedef struct { |
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84 | char dev[MAXINDIDEVICE]; |
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85 | char name[MAXINDINAME]; |
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86 | } Property; |
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87 | |
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88 | /* record of each snooped property */ |
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89 | typedef struct { |
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90 | Property prop; |
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91 | BLOBHandling blob; /* when to snoop BLOBs */ |
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92 | } Snoopee; |
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93 | |
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94 | struct |
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95 | { |
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96 | const char *name; /* Path to FIFO for dynamic startups & shutdowns of drivers */ |
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97 | int fd; |
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98 | FILE *fs; |
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99 | } fifo; |
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100 | |
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101 | /* info for each connected client */ |
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102 | typedef struct { |
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103 | int active; /* 1 when this record is in use */ |
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104 | Property *props; /* malloced array of props we want */ |
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105 | int nprops; /* n entries in props[] */ |
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106 | int allprops; /* saw getProperties w/o device */ |
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107 | BLOBHandling blob; /* when to send setBLOBs */ |
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108 | int s; /* socket for this client */ |
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109 | LilXML *lp; /* XML parsing context */ |
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110 | FQ *msgq; /* Msg queue */ |
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111 | unsigned int nsent; /* bytes of current Msg sent so far */ |
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112 | } ClInfo; |
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113 | static ClInfo *clinfo; /* malloced pool of clients */ |
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114 | static int nclinfo; /* n total (not active) */ |
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115 | |
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116 | /* info for each connected driver */ |
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117 | typedef struct { |
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118 | char name[MAXINDIDEVICE]; /* persistent name */ |
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119 | char dev[MAXINDIDEVICE]; /* device served by this driver */ |
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120 | int active; /* 1 when this record is in use */ |
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121 | Snoopee *sprops; /* malloced array of props we snoop */ |
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122 | int nsprops; /* n entries in sprops[] */ |
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123 | int pid; /* process id or REMOTEDVR if remote */ |
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124 | int rfd; /* read pipe fd */ |
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125 | int wfd; /* write pipe fd */ |
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126 | int efd; /* stderr from driver, if local */ |
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127 | int restarts; /* times process has been restarted */ |
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128 | LilXML *lp; /* XML parsing context */ |
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129 | FQ *msgq; /* Msg queue */ |
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130 | unsigned int nsent; /* bytes of current Msg sent so far */ |
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131 | } DvrInfo; |
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132 | static DvrInfo *dvrinfo; /* malloced array of drivers */ |
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133 | static int ndvrinfo; /* n total */ |
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134 | |
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135 | static char *me; /* our name */ |
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136 | static int port = INDIPORT; /* public INDI port */ |
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137 | static int verbose; /* chattiness */ |
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138 | static int lsocket; /* listen socket */ |
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139 | static char *ldir; /* where to log driver messages */ |
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140 | static int maxqsiz = (DEFMAXQSIZ*1024*1024); /* kill if these bytes behind */ |
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141 | |
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142 | static void logStartup(int ac, char *av[]); |
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143 | static void usage (void); |
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144 | static void noZombies (void); |
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145 | static void noSIGPIPE (void); |
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146 | static void indiFIFO(void); |
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147 | static void indiRun (void); |
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148 | static void indiListen (void); |
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149 | static void newFIFO(void); |
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150 | static void newClient (void); |
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151 | static int newClSocket (void); |
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152 | static void shutdownClient (ClInfo *cp); |
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153 | static int readFromClient (ClInfo *cp); |
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154 | static void startDvr (DvrInfo *dp); |
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155 | static void startLocalDvr (DvrInfo *dp); |
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156 | static void startRemoteDvr (DvrInfo *dp); |
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157 | static int openINDIServer (char host[], int indi_port); |
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158 | static void shutdownDvr (DvrInfo *dp, int restart); |
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159 | static void q2RDrivers (const char *dev, Msg *mp, XMLEle *root); |
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160 | static void q2SDrivers (int isblob, const char *dev, const char *name, Msg *mp, |
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161 | XMLEle *root); |
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162 | static int q2Clients (ClInfo *notme, int isblob, const char *dev, const char *name, |
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163 | Msg *mp, XMLEle *root); |
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164 | static void addSDevice (DvrInfo *dp, const char *dev, const char *name); |
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165 | static Snoopee *findSDevice (DvrInfo *dp, const char *dev, const char *name); |
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166 | static void addClDevice (ClInfo *cp, const char *dev, const char *name); |
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167 | static int findClDevice (ClInfo *cp, const char *dev, const char *name); |
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168 | static int readFromDriver (DvrInfo *dp); |
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169 | static int stderrFromDriver (DvrInfo *dp); |
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170 | static int msgQSize (FQ *q); |
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171 | static void setMsgXMLEle (Msg *mp, XMLEle *root); |
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172 | static void setMsgStr (Msg *mp, char *str); |
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173 | static void freeMsg (Msg *mp); |
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174 | static Msg *newMsg (void); |
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175 | static int sendClientMsg (ClInfo *cp); |
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176 | static int sendDriverMsg (DvrInfo *cp); |
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177 | static void crackBLOB (char *enableBLOB, BLOBHandling *bp); |
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178 | static void traceMsg (XMLEle *root); |
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179 | static char *indi_tstamp (char *s); |
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180 | static void logDMsg (XMLEle *root, const char *dev); |
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181 | static void Bye(void); |
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182 | |
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183 | int |
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184 | main (int ac, char *av[]) |
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185 | { |
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186 | /* log startup */ |
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187 | logStartup(ac, av); |
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188 | |
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189 | /* save our name */ |
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190 | me = av[0]; |
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191 | |
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192 | /* crack args */ |
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193 | while ((--ac > 0) && ((*++av)[0] == '-')) { |
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194 | char *s; |
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195 | for (s = av[0]+1; *s != '\0'; s++) |
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196 | switch (*s) { |
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197 | case 'l': |
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198 | if (ac < 2) { |
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199 | fprintf (stderr, "-l requires log directory\n"); |
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200 | usage(); |
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201 | } |
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202 | ldir = *++av; |
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203 | ac--; |
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204 | break; |
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205 | case 'm': |
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206 | if (ac < 2) { |
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207 | fprintf (stderr, "-m requires max MB behind\n"); |
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208 | usage(); |
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209 | } |
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210 | maxqsiz = 1024*1024*atoi(*++av); |
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211 | ac--; |
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212 | break; |
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213 | case 'p': |
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214 | if (ac < 2) { |
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215 | fprintf (stderr, "-p requires port value\n"); |
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216 | usage(); |
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217 | } |
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218 | port = atoi(*++av); |
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219 | ac--; |
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220 | break; |
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221 | case 'f': |
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222 | if (ac < 2) { |
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223 | fprintf (stderr, "-f requires fifo node\n"); |
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224 | usage(); |
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225 | } |
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226 | fifo.name = *++av; |
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227 | ac--; |
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228 | break; |
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229 | case 'v': |
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230 | verbose++; |
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231 | break; |
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232 | default: |
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233 | usage(); |
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234 | } |
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235 | } |
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236 | |
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237 | /* at this point there are ac args in av[] to name our drivers */ |
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238 | if (ac == 0 && !fifo.name) |
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239 | usage(); |
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240 | |
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241 | /* take care of some unixisms */ |
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242 | noZombies(); |
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243 | noSIGPIPE(); |
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244 | |
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245 | /* realloc seed for client pool */ |
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246 | clinfo = (ClInfo *) malloc (1); |
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247 | nclinfo = 0; |
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248 | |
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249 | /* create driver info array all at once since size never changes */ |
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250 | ndvrinfo = ac; |
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251 | dvrinfo = (DvrInfo *) calloc (ndvrinfo, sizeof(DvrInfo)); |
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252 | |
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253 | /* start each driver */ |
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254 | while (ac-- > 0) { |
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255 | strcpy(dvrinfo[ac].name, *av++); |
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256 | startDvr (&dvrinfo[ac]); |
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257 | } |
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258 | |
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259 | /* announce we are online */ |
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260 | indiListen(); |
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261 | |
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262 | /* Load up FIFO, if available */ |
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263 | indiFIFO(); |
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264 | |
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265 | /* handle new clients and all io */ |
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266 | while (1) |
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267 | indiRun(); |
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268 | |
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269 | /* whoa! */ |
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270 | fprintf (stderr, "unexpected return from main\n"); |
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271 | return (1); |
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272 | } |
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273 | |
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274 | /* record we have started and our args */ |
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275 | static void |
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276 | logStartup(int ac, char *av[]) |
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277 | { |
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278 | int i; |
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279 | |
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280 | fprintf (stderr, "%s: startup: ", indi_tstamp(NULL)); |
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281 | for (i = 0; i < ac; i++) |
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282 | fprintf (stderr, "%s ", av[i]); |
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283 | fprintf (stderr, "\n"); |
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284 | } |
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285 | |
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286 | /* print usage message and exit (2) */ |
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287 | static void |
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288 | usage(void) |
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289 | { |
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290 | fprintf (stderr, "Usage: %s [options] driver [driver ...]\n", me); |
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291 | fprintf (stderr, "Purpose: server for local and remote INDI drivers\n"); |
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292 | fprintf (stderr, "Code %s. Protocol %g.\n", "$Revision: 726523 $", INDIV); |
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293 | fprintf (stderr, "Options:\n"); |
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294 | fprintf (stderr, " -l d : log driver messages to <d>/YYYY-MM-DD.islog\n"); |
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295 | fprintf (stderr, " -m m : kill client if gets more than this many MB behind, default %d\n", DEFMAXQSIZ); |
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296 | fprintf (stderr, " -p p : alternate IP port, default %d\n", INDIPORT); |
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297 | fprintf (stderr, " -f path : Path to fifo for dynamic startup and shutdown of drivers.\n"); |
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298 | fprintf (stderr, " -v : show key events, no traffic\n"); |
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299 | fprintf (stderr, " -vv : -v + key message content\n"); |
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300 | fprintf (stderr, " -vvv : -vv + complete xml\n"); |
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301 | fprintf (stderr, "driver : executable or device@host[:port]\n"); |
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302 | |
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303 | exit (2); |
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304 | } |
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305 | |
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306 | /* arrange for no zombies if drivers die */ |
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307 | static void |
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308 | noZombies() |
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309 | { |
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310 | struct sigaction sa; |
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311 | sa.sa_handler = SIG_IGN; |
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312 | sigemptyset(&sa.sa_mask); |
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313 | #ifdef SA_NOCLDWAIT |
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314 | sa.sa_flags = SA_NOCLDWAIT; |
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315 | #else |
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316 | sa.sa_flags = 0; |
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317 | #endif |
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318 | (void)sigaction(SIGCHLD, &sa, NULL); |
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319 | } |
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320 | |
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321 | /* turn off SIGPIPE on bad write so we can handle it inline */ |
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322 | static void |
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323 | noSIGPIPE() |
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324 | { |
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325 | struct sigaction sa; |
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326 | sa.sa_handler = SIG_IGN; |
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327 | sigemptyset(&sa.sa_mask); |
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328 | (void)sigaction(SIGPIPE, &sa, NULL); |
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329 | } |
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330 | |
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331 | static DvrInfo * allocDvr () |
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332 | { |
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333 | DvrInfo *dp = NULL; |
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334 | int dvi; |
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335 | |
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336 | /* try to reuse a drivber slot, else add one */ |
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337 | for (dvi = 0; dvi < ndvrinfo; dvi++) |
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338 | if (!(dp = &dvrinfo[dvi])->active) |
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339 | break; |
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340 | if (dvi == ndvrinfo) |
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341 | { |
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342 | /* grow dvrinfo */ |
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343 | dvrinfo = (DvrInfo *) realloc (dvrinfo, (ndvrinfo+1)*sizeof(DvrInfo)); |
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344 | if (!dvrinfo) { |
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345 | fprintf (stderr, "no memory for new drivers\n"); |
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346 | Bye(); |
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347 | } |
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348 | dp = &dvrinfo[ndvrinfo++]; |
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349 | } |
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350 | |
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351 | /* rig up new dvrinfo entry */ |
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352 | memset (dp, 0, sizeof(*dp)); |
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353 | dp->active = 1; |
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354 | |
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355 | return dp; |
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356 | |
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357 | } |
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358 | |
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359 | /* start the given INDI driver process or connection. |
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360 | * exit if trouble. |
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361 | */ |
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362 | static void |
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363 | startDvr (DvrInfo *dp) |
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364 | { |
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365 | if (strchr (dp->name, '@')) |
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366 | startRemoteDvr (dp); |
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367 | else |
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368 | startLocalDvr (dp); |
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369 | } |
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370 | |
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371 | /* start the given local INDI driver process. |
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372 | * exit if trouble. |
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373 | */ |
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374 | static void |
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375 | startLocalDvr (DvrInfo *dp) |
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376 | { |
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377 | Msg *mp; |
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378 | char buf[1024]; |
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379 | int rp[2], wp[2], ep[2]; |
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380 | int pid; |
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381 | |
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382 | /* build three pipes: r, w and error*/ |
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383 | if (pipe (rp) < 0) { |
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384 | fprintf (stderr, "%s: read pipe: %s\n", indi_tstamp(NULL), |
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385 | strerror(errno)); |
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386 | Bye(); |
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387 | } |
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388 | if (pipe (wp) < 0) { |
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389 | fprintf (stderr, "%s: write pipe: %s\n", indi_tstamp(NULL), |
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390 | strerror(errno)); |
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391 | Bye(); |
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392 | } |
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393 | if (pipe (ep) < 0) { |
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394 | fprintf (stderr, "%s: stderr pipe: %s\n", indi_tstamp(NULL), |
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395 | strerror(errno)); |
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396 | Bye(); |
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397 | } |
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398 | |
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399 | /* fork&exec new process */ |
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400 | pid = fork(); |
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401 | if (pid < 0) { |
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402 | fprintf (stderr, "%s: fork: %s\n", indi_tstamp(NULL), strerror(errno)); |
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403 | Bye(); |
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404 | } |
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405 | if (pid == 0) { |
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406 | /* child: exec name */ |
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407 | int fd; |
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408 | |
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409 | /* rig up pipes */ |
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410 | dup2 (wp[0], 0); /* driver stdin reads from wp[0] */ |
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411 | dup2 (rp[1], 1); /* driver stdout writes to rp[1] */ |
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412 | dup2 (ep[1], 2); /* driver stderr writes to e[]1] */ |
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413 | for (fd = 3; fd < 100; fd++) |
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414 | (void) close (fd); |
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415 | |
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416 | /* go -- should never return */ |
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417 | execlp (dp->name, dp->name, NULL); |
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418 | fprintf (stderr, "%s: Driver %s: execlp: %s\n", indi_tstamp(NULL), |
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419 | dp->name, strerror(errno)); |
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420 | _exit (1); /* parent will notice EOF shortly */ |
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421 | } |
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422 | |
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423 | /* don't need child's side of pipes */ |
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424 | close (wp[0]); |
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425 | close (rp[1]); |
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426 | close (ep[1]); |
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427 | |
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428 | /* record pid, io channels, init lp and snoop list */ |
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429 | dp->pid = pid; |
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430 | dp->rfd = rp[0]; |
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431 | dp->wfd = wp[1]; |
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432 | dp->efd = ep[0]; |
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433 | dp->lp = newLilXML(); |
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434 | dp->msgq = newFQ(1); |
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435 | dp->sprops = (Snoopee*) malloc (1); /* seed for realloc */ |
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436 | dp->nsprops = 0; |
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437 | dp->nsent = 0; |
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438 | dp->active = 1; |
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439 | |
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440 | /* first message primes driver to report its properties -- dev known |
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441 | * if restarting |
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442 | */ |
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443 | mp = newMsg(); |
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444 | pushFQ (dp->msgq, mp); |
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445 | if (dp->dev[0]) |
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446 | sprintf (buf, "<getProperties device='%s' version='%g'/>\n", |
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447 | dp->dev, INDIV); |
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448 | else |
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449 | sprintf (buf, "<getProperties version='%g'/>\n", INDIV); |
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450 | setMsgStr (mp, buf); |
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451 | mp->count++; |
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452 | |
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453 | if (verbose > 0) |
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454 | fprintf (stderr, "%s: Driver %s: pid=%d rfd=%d wfd=%d efd=%d\n", |
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455 | indi_tstamp(NULL), dp->name, dp->pid, dp->rfd, dp->wfd, dp->efd); |
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456 | } |
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457 | |
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458 | /* start the given remote INDI driver connection. |
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459 | * exit if trouble. |
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460 | */ |
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461 | static void |
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462 | startRemoteDvr (DvrInfo *dp) |
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463 | { |
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464 | Msg *mp; |
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465 | char dev[1024]; |
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466 | char host[1024]; |
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467 | char buf[1024]; |
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468 | int indi_port, sockfd; |
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469 | |
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470 | /* extract host and port */ |
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471 | indi_port = INDIPORT; |
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472 | if (sscanf (dp->name, "%[^@]@%[^:]:%d", dev, host, &indi_port) < 2) { |
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473 | fprintf (stderr, "Bad remote device syntax: %s\n", dp->name); |
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474 | Bye(); |
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475 | } |
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476 | |
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477 | /* connect */ |
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478 | sockfd = openINDIServer (host, indi_port); |
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479 | |
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480 | /* record flag pid, io channels, init lp and snoop list */ |
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481 | dp->pid = REMOTEDVR; |
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482 | dp->rfd = sockfd; |
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483 | dp->wfd = sockfd; |
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484 | dp->lp = newLilXML(); |
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485 | dp->msgq = newFQ(1); |
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486 | dp->sprops = (Snoopee*) malloc (1); /* seed for realloc */ |
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487 | dp->nsprops = 0; |
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488 | dp->nsent = 0; |
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489 | dp->active = 1; |
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490 | |
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491 | /* N.B. storing name now is key to limiting outbound traffic to this |
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492 | * dev. |
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493 | */ |
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494 | strncpy (dp->dev, dev, MAXINDIDEVICE-1); |
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495 | dp->dev[MAXINDIDEVICE-1] = '\0'; |
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496 | |
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497 | /* Sending getProperties with device lets remote server limit its |
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498 | * outbound (and our inbound) traffic on this socket to this device. |
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499 | */ |
---|
500 | mp = newMsg(); |
---|
501 | pushFQ (dp->msgq, mp); |
---|
502 | sprintf (buf, "<getProperties device='%s' version='%g'/>\n", |
---|
503 | dp->dev, INDIV); |
---|
504 | setMsgStr (mp, buf); |
---|
505 | mp->count++; |
---|
506 | |
---|
507 | if (verbose > 0) |
---|
508 | fprintf (stderr, "%s: Driver %s: socket=%d\n", indi_tstamp(NULL), |
---|
509 | dp->name, sockfd); |
---|
510 | } |
---|
511 | |
---|
512 | /* open a connection to the given host and port or die. |
---|
513 | * return socket fd. |
---|
514 | */ |
---|
515 | static int |
---|
516 | openINDIServer (char host[], int indi_port) |
---|
517 | { |
---|
518 | struct sockaddr_in serv_addr; |
---|
519 | struct hostent *hp; |
---|
520 | int sockfd; |
---|
521 | |
---|
522 | /* lookup host address */ |
---|
523 | hp = gethostbyname (host); |
---|
524 | if (!hp) { |
---|
525 | fprintf (stderr, "gethostbyname(%s): %s\n", host, strerror(errno)); |
---|
526 | Bye(); |
---|
527 | } |
---|
528 | |
---|
529 | /* create a socket to the INDI server */ |
---|
530 | (void) memset ((char *)&serv_addr, 0, sizeof(serv_addr)); |
---|
531 | serv_addr.sin_family = AF_INET; |
---|
532 | serv_addr.sin_addr.s_addr = |
---|
533 | ((struct in_addr *)(hp->h_addr_list[0]))->s_addr; |
---|
534 | serv_addr.sin_port = htons(indi_port); |
---|
535 | if ((sockfd = socket (AF_INET, SOCK_STREAM, 0)) < 0) { |
---|
536 | fprintf (stderr, "socket(%s,%d): %s\n", host, indi_port,strerror(errno)); |
---|
537 | Bye(); |
---|
538 | } |
---|
539 | |
---|
540 | /* connect */ |
---|
541 | if (connect (sockfd,(struct sockaddr *)&serv_addr,sizeof(serv_addr))<0){ |
---|
542 | fprintf (stderr, "connect(%s,%d): %s\n", host,indi_port,strerror(errno)); |
---|
543 | Bye(); |
---|
544 | } |
---|
545 | |
---|
546 | /* ok */ |
---|
547 | return (sockfd); |
---|
548 | } |
---|
549 | |
---|
550 | /* create the public INDI Driver endpoint lsocket on port. |
---|
551 | * return server socket else exit. |
---|
552 | */ |
---|
553 | static void |
---|
554 | indiListen () |
---|
555 | { |
---|
556 | struct sockaddr_in serv_socket; |
---|
557 | int sfd; |
---|
558 | int reuse = 1; |
---|
559 | |
---|
560 | /* make socket endpoint */ |
---|
561 | if ((sfd = socket (AF_INET, SOCK_STREAM, 0)) < 0) { |
---|
562 | fprintf (stderr, "%s: socket: %s\n", indi_tstamp(NULL), strerror(errno)); |
---|
563 | Bye(); |
---|
564 | } |
---|
565 | |
---|
566 | /* bind to given port for any IP address */ |
---|
567 | memset (&serv_socket, 0, sizeof(serv_socket)); |
---|
568 | serv_socket.sin_family = AF_INET; |
---|
569 | #ifdef SSH_TUNNEL |
---|
570 | serv_socket.sin_addr.s_addr = htonl (INADDR_LOOPBACK); |
---|
571 | #else |
---|
572 | serv_socket.sin_addr.s_addr = htonl (INADDR_ANY); |
---|
573 | #endif |
---|
574 | serv_socket.sin_port = htons ((unsigned short)port); |
---|
575 | if (setsockopt(sfd,SOL_SOCKET,SO_REUSEADDR,&reuse,sizeof(reuse)) < 0){ |
---|
576 | fprintf (stderr, "%s: setsockopt: %s\n", indi_tstamp(NULL), |
---|
577 | strerror(errno)); |
---|
578 | Bye(); |
---|
579 | } |
---|
580 | if (bind(sfd,(struct sockaddr*)&serv_socket,sizeof(serv_socket)) < 0){ |
---|
581 | fprintf (stderr, "%s: bind: %s\n", indi_tstamp(NULL), strerror(errno)); |
---|
582 | Bye(); |
---|
583 | } |
---|
584 | |
---|
585 | /* willing to accept connections with a backlog of 5 pending */ |
---|
586 | if (listen (sfd, 5) < 0) { |
---|
587 | fprintf (stderr, "%s: listen: %s\n", indi_tstamp(NULL), strerror(errno)); |
---|
588 | Bye(); |
---|
589 | } |
---|
590 | |
---|
591 | /* ok */ |
---|
592 | lsocket = sfd; |
---|
593 | if (verbose > 0) |
---|
594 | fprintf (stderr, "%s: listening to port %d on fd %d\n", |
---|
595 | indi_tstamp(NULL), port, sfd); |
---|
596 | } |
---|
597 | |
---|
598 | /* Attempt to open up FIFO */ |
---|
599 | static void indiFIFO(void) |
---|
600 | { |
---|
601 | /* Open up FIFO, if available */ |
---|
602 | if (fifo.name) |
---|
603 | { |
---|
604 | fifo.fd = open(fifo.name, O_RDONLY); |
---|
605 | if (fifo.fd < 0) |
---|
606 | { |
---|
607 | fprintf(stderr, "%s: open(%s): %s.\n", indi_tstamp(NULL), fifo.name, strerror(errno)); |
---|
608 | Bye(); |
---|
609 | } |
---|
610 | |
---|
611 | fifo.fs = fdopen(fifo.fd, "r"); |
---|
612 | } |
---|
613 | } |
---|
614 | |
---|
615 | /* service traffic from clients and drivers */ |
---|
616 | static void |
---|
617 | indiRun(void) |
---|
618 | { |
---|
619 | fd_set rs, ws; |
---|
620 | int maxfd=0; |
---|
621 | int i, s; |
---|
622 | |
---|
623 | /* init with no writers or readers */ |
---|
624 | FD_ZERO(&ws); |
---|
625 | FD_ZERO(&rs); |
---|
626 | |
---|
627 | if (fifo.name && fifo.fd > 0) |
---|
628 | { |
---|
629 | FD_SET(fifo.fd, &rs); |
---|
630 | maxfd = fifo.fd; |
---|
631 | } |
---|
632 | |
---|
633 | /* always listen for new clients */ |
---|
634 | FD_SET(lsocket, &rs); |
---|
635 | if (lsocket > maxfd) |
---|
636 | maxfd = lsocket; |
---|
637 | |
---|
638 | /* add all client readers and client writers with work to send */ |
---|
639 | for (i = 0; i < nclinfo; i++) { |
---|
640 | ClInfo *cp = &clinfo[i]; |
---|
641 | if (cp->active) { |
---|
642 | FD_SET(cp->s, &rs); |
---|
643 | if (nFQ(cp->msgq) > 0) |
---|
644 | FD_SET(cp->s, &ws); |
---|
645 | if (cp->s > maxfd) |
---|
646 | maxfd = cp->s; |
---|
647 | } |
---|
648 | } |
---|
649 | |
---|
650 | /* add all driver readers and driver writers with work to send */ |
---|
651 | for (i = 0; i < ndvrinfo; i++) |
---|
652 | { |
---|
653 | DvrInfo *dp = &dvrinfo[i]; |
---|
654 | if (dp->active) |
---|
655 | { |
---|
656 | FD_SET(dp->rfd, &rs); |
---|
657 | if (dp->rfd > maxfd) |
---|
658 | maxfd = dp->rfd; |
---|
659 | if (dp->pid != REMOTEDVR) |
---|
660 | { |
---|
661 | FD_SET(dp->efd, &rs); |
---|
662 | if (dp->efd > maxfd) |
---|
663 | maxfd = dp->efd; |
---|
664 | } |
---|
665 | if (nFQ(dp->msgq) > 0) |
---|
666 | { |
---|
667 | FD_SET(dp->wfd, &ws); |
---|
668 | if (dp->wfd > maxfd) |
---|
669 | maxfd = dp->wfd; |
---|
670 | } |
---|
671 | } |
---|
672 | } |
---|
673 | |
---|
674 | /* wait for action */ |
---|
675 | s = select (maxfd+1, &rs, &ws, NULL, NULL); |
---|
676 | if (s < 0) { |
---|
677 | fprintf (stderr, "%s: select(%d): %s\n", indi_tstamp(NULL), maxfd+1, |
---|
678 | strerror(errno)); |
---|
679 | Bye(); |
---|
680 | } |
---|
681 | |
---|
682 | |
---|
683 | /* new command from FIFO? */ |
---|
684 | if (s > 0 && FD_ISSET(fifo.fd, &rs)) { |
---|
685 | newFIFO(); |
---|
686 | s--; |
---|
687 | } |
---|
688 | |
---|
689 | /* new client? */ |
---|
690 | if (s > 0 && FD_ISSET(lsocket, &rs)) { |
---|
691 | newClient(); |
---|
692 | s--; |
---|
693 | } |
---|
694 | |
---|
695 | /* message to/from client? */ |
---|
696 | for (i = 0; s > 0 && i < nclinfo; i++) { |
---|
697 | ClInfo *cp = &clinfo[i]; |
---|
698 | if (cp->active) { |
---|
699 | if (FD_ISSET(cp->s, &rs)) { |
---|
700 | if (readFromClient(cp) < 0) |
---|
701 | return; /* fds effected */ |
---|
702 | s--; |
---|
703 | } |
---|
704 | if (s > 0 && FD_ISSET(cp->s, &ws)) { |
---|
705 | if (sendClientMsg(cp) < 0) |
---|
706 | return; /* fds effected */ |
---|
707 | s--; |
---|
708 | } |
---|
709 | } |
---|
710 | } |
---|
711 | |
---|
712 | /* message to/from driver? */ |
---|
713 | for (i = 0; s > 0 && i < ndvrinfo; i++) { |
---|
714 | DvrInfo *dp = &dvrinfo[i]; |
---|
715 | if (dp->pid != REMOTEDVR && FD_ISSET(dp->efd, &rs)) { |
---|
716 | if (stderrFromDriver(dp) < 0) |
---|
717 | return; /* fds effected */ |
---|
718 | s--; |
---|
719 | } |
---|
720 | if (s > 0 && FD_ISSET(dp->rfd, &rs)) { |
---|
721 | if (readFromDriver(dp) < 0) |
---|
722 | return; /* fds effected */ |
---|
723 | s--; |
---|
724 | } |
---|
725 | if (s > 0 && FD_ISSET(dp->wfd, &ws) && nFQ(dp->msgq) > 0) { |
---|
726 | if (sendDriverMsg(dp) < 0) |
---|
727 | return; /* fds effected */ |
---|
728 | s--; |
---|
729 | } |
---|
730 | } |
---|
731 | } |
---|
732 | |
---|
733 | /* Read commands from FIFO and process them. Start/stop drivers accordingly */ |
---|
734 | static void newFIFO(void) |
---|
735 | { |
---|
736 | char line[MAXRBUF], tDriver[MAXRBUF], tConfig[MAXRBUF], tDev[MAXRBUF]; |
---|
737 | static char *envDev=NULL, *envConfig=NULL; |
---|
738 | const char *delm = " "; |
---|
739 | char *token, *cp; |
---|
740 | DvrInfo *dp = NULL; |
---|
741 | int startCmd=0; |
---|
742 | |
---|
743 | if (envDev == NULL) |
---|
744 | envDev = (char *) malloc(MAXRBUF* sizeof(char)); |
---|
745 | if (envConfig == NULL) |
---|
746 | envConfig = (char *) malloc(MAXRBUF * sizeof(char)); |
---|
747 | |
---|
748 | while ( fgets (line, MAXRBUF, fifo.fs) != NULL) |
---|
749 | { |
---|
750 | //fprintf(stderr, "FIFO: %s\n", line); |
---|
751 | tDev[0] = '\0', tDriver[0] = '\0', tConfig[0] = '\0', envDev[0] = '\0', envConfig[0] = '\0'; |
---|
752 | cp = strdup(line); |
---|
753 | |
---|
754 | token = strsep(&cp, delm); |
---|
755 | |
---|
756 | if (!strcmp(token, "start") || !strcmp(token, "stop")) |
---|
757 | { |
---|
758 | if (!strcmp(token, "start")) |
---|
759 | startCmd = 1; |
---|
760 | |
---|
761 | token = strsep(&cp, delm); |
---|
762 | |
---|
763 | if (!token) |
---|
764 | continue; |
---|
765 | |
---|
766 | strncpy(tDriver, token, MAXRBUF); |
---|
767 | |
---|
768 | if (verbose) |
---|
769 | fprintf(stderr, "FIFO: Request for %s driver: %s\n", (startCmd == 1) ? "starting" : "stopping", tDriver); |
---|
770 | |
---|
771 | /* Find more name + config */ |
---|
772 | token = strsep(&cp, delm); |
---|
773 | |
---|
774 | if (token) |
---|
775 | { |
---|
776 | /* If config file detected, copy it */ |
---|
777 | if (strstr(token, ".xml")) |
---|
778 | strncpy(tConfig, token, MAXRBUF); |
---|
779 | /* Get rid of quotes */ |
---|
780 | else if (strstr(token, "\"") || strstr(token, "'")) |
---|
781 | { |
---|
782 | strncat(tDev, ++token, MAXRBUF); |
---|
783 | while (token = strsep(&cp, delm) ) |
---|
784 | { |
---|
785 | strcat(tDev, " "); |
---|
786 | strncat(tDev, token, MAXRBUF); |
---|
787 | if (strstr(token, "\"") || strstr(token, "'")) |
---|
788 | { |
---|
789 | tDev[strlen(tDev)-1] = '\0'; |
---|
790 | break; |
---|
791 | } |
---|
792 | } |
---|
793 | } |
---|
794 | else |
---|
795 | strncpy(tDev, token, MAXRBUF); |
---|
796 | |
---|
797 | /* Find config, if there is any */ |
---|
798 | token = strsep(&cp, delm); |
---|
799 | if (token) |
---|
800 | { |
---|
801 | /* Get rid of quotes */ |
---|
802 | if (strstr(token, "\"") || strstr(token, "'")) |
---|
803 | { |
---|
804 | strncat(tConfig, ++token, MAXRBUF); |
---|
805 | while (token = strsep(&cp, delm) ) |
---|
806 | { |
---|
807 | strcat(tConfig, " "); |
---|
808 | strncat(tConfig, token, MAXRBUF); |
---|
809 | |
---|
810 | if (strstr(token, "\"") || strstr(token, "'")) |
---|
811 | { |
---|
812 | tConfig[strlen(tConfig)-1] = '\0'; |
---|
813 | break; |
---|
814 | } |
---|
815 | } |
---|
816 | } |
---|
817 | else |
---|
818 | strncpy(tConfig, token, MAXRBUF); |
---|
819 | } |
---|
820 | } |
---|
821 | |
---|
822 | /* Did we find device name? */ |
---|
823 | if (tDev[0]) |
---|
824 | { |
---|
825 | snprintf(envDev, MAXRBUF, "INDIDEV=%s", tDev); |
---|
826 | //fprintf(stderr, "With name: %s\n", envDev); |
---|
827 | putenv(envDev); |
---|
828 | |
---|
829 | //fprintf(stderr, "envionment check INDIDEV: %s\n", getenv("INDIDEV")); |
---|
830 | } |
---|
831 | |
---|
832 | /* Did we find config file */ |
---|
833 | if (tConfig[0]) |
---|
834 | { |
---|
835 | snprintf(envConfig, MAXRBUF, "INDICONFIG=%s", tConfig); |
---|
836 | //fprintf(stderr, "With config: %s\n", envConfig); |
---|
837 | putenv(envConfig); |
---|
838 | } |
---|
839 | |
---|
840 | if (startCmd) |
---|
841 | { |
---|
842 | if (verbose) |
---|
843 | fprintf(stderr, "FIFO: Starting driver %s\n", tDriver); |
---|
844 | dp = allocDvr(); |
---|
845 | strncpy(dp->name, tDriver, MAXINDIDEVICE); |
---|
846 | strncpy(dp->dev, tDev, MAXINDIDEVICE); |
---|
847 | startDvr (dp); |
---|
848 | } |
---|
849 | else |
---|
850 | { |
---|
851 | for (dp = dvrinfo; dp < &dvrinfo[ndvrinfo]; dp++) |
---|
852 | { |
---|
853 | if (!strcmp(dp->name, tDriver)) |
---|
854 | { |
---|
855 | /* If device name is given, check against it before shutting down */ |
---|
856 | if (tDev[0] && strcmp(dp->dev, tDev)) |
---|
857 | continue; |
---|
858 | |
---|
859 | if (verbose) |
---|
860 | fprintf(stderr, "FIFO: Shutting down driver: %s\n", tDriver); |
---|
861 | |
---|
862 | shutdownDvr(dp, 0); |
---|
863 | |
---|
864 | /* Inform clients that this driver is dead */ |
---|
865 | XMLEle *root = addXMLEle (NULL, "delProperty"); |
---|
866 | addXMLAtt(root, "device", dp->dev); |
---|
867 | Msg * mp = newMsg(); |
---|
868 | |
---|
869 | q2Clients(NULL, 0, dp->dev, NULL, mp, root); |
---|
870 | if (mp->count > 0) |
---|
871 | setMsgXMLEle (mp, root); |
---|
872 | else |
---|
873 | freeMsg (mp); |
---|
874 | delXMLEle (root); |
---|
875 | |
---|
876 | break; |
---|
877 | |
---|
878 | } |
---|
879 | } |
---|
880 | } |
---|
881 | } |
---|
882 | } |
---|
883 | } |
---|
884 | |
---|
885 | /* prepare for new client arriving on lsocket. |
---|
886 | * exit if trouble. |
---|
887 | */ |
---|
888 | static void |
---|
889 | newClient() |
---|
890 | { |
---|
891 | ClInfo *cp = NULL; |
---|
892 | int s, cli; |
---|
893 | |
---|
894 | /* assign new socket */ |
---|
895 | s = newClSocket (); |
---|
896 | |
---|
897 | /* try to reuse a clinfo slot, else add one */ |
---|
898 | for (cli = 0; cli < nclinfo; cli++) |
---|
899 | if (!(cp = &clinfo[cli])->active) |
---|
900 | break; |
---|
901 | if (cli == nclinfo) { |
---|
902 | /* grow clinfo */ |
---|
903 | clinfo = (ClInfo *) realloc (clinfo, (nclinfo+1)*sizeof(ClInfo)); |
---|
904 | if (!clinfo) { |
---|
905 | fprintf (stderr, "no memory for new client\n"); |
---|
906 | Bye(); |
---|
907 | } |
---|
908 | cp = &clinfo[nclinfo++]; |
---|
909 | } |
---|
910 | |
---|
911 | /* rig up new clinfo entry */ |
---|
912 | memset (cp, 0, sizeof(*cp)); |
---|
913 | cp->active = 1; |
---|
914 | cp->s = s; |
---|
915 | cp->lp = newLilXML(); |
---|
916 | cp->msgq = newFQ(1); |
---|
917 | cp->props = malloc (1); |
---|
918 | cp->nsent = 0; |
---|
919 | |
---|
920 | if (verbose > 0) { |
---|
921 | struct sockaddr_in addr; |
---|
922 | socklen_t len = sizeof(addr); |
---|
923 | getpeername(s, (struct sockaddr*)&addr, &len); |
---|
924 | fprintf(stderr,"%s: Client %d: new arrival from %s:%d - welcome!\n", |
---|
925 | indi_tstamp(NULL), cp->s, inet_ntoa(addr.sin_addr), |
---|
926 | ntohs(addr.sin_port)); |
---|
927 | } |
---|
928 | } |
---|
929 | |
---|
930 | /* read more from the given client, send to each appropriate driver when see |
---|
931 | * xml closure. also send all newXXX() to all other interested clients. |
---|
932 | * return -1 if had to shut down anything, else 0. |
---|
933 | */ |
---|
934 | static int |
---|
935 | readFromClient (ClInfo *cp) |
---|
936 | { |
---|
937 | char buf[MAXRBUF]; |
---|
938 | int shutany = 0; |
---|
939 | int i, nr; |
---|
940 | |
---|
941 | /* read client */ |
---|
942 | nr = read (cp->s, buf, sizeof(buf)); |
---|
943 | if (nr <= 0) { |
---|
944 | if (nr < 0) |
---|
945 | fprintf (stderr, "%s: Client %d: read: %s\n", indi_tstamp(NULL), |
---|
946 | cp->s, strerror(errno)); |
---|
947 | else if (verbose > 0) |
---|
948 | fprintf (stderr, "%s: Client %d: read EOF\n", indi_tstamp(NULL), |
---|
949 | cp->s); |
---|
950 | shutdownClient (cp); |
---|
951 | return (-1); |
---|
952 | } |
---|
953 | |
---|
954 | /* process XML, sending when find closure */ |
---|
955 | for (i = 0; i < nr; i++) { |
---|
956 | char err[1024]; |
---|
957 | XMLEle *root = readXMLEle (cp->lp, buf[i], err); |
---|
958 | if (root) { |
---|
959 | char *roottag = tagXMLEle(root); |
---|
960 | const char *dev = findXMLAttValu (root, "device"); |
---|
961 | const char *name = findXMLAttValu (root, "name"); |
---|
962 | int isblob = !strcmp (tagXMLEle(root), "setBLOBVector"); |
---|
963 | Msg *mp; |
---|
964 | |
---|
965 | if (verbose > 2) { |
---|
966 | fprintf (stderr, "%s: Client %d: read ",indi_tstamp(NULL),cp->s); |
---|
967 | traceMsg (root); |
---|
968 | } else if (verbose > 1) { |
---|
969 | fprintf (stderr, "%s: Client %d: read <%s device='%s' name='%s'>\n", |
---|
970 | indi_tstamp(NULL), cp->s, tagXMLEle(root), |
---|
971 | findXMLAttValu (root, "device"), |
---|
972 | findXMLAttValu (root, "name")); |
---|
973 | } |
---|
974 | |
---|
975 | /* snag interested properties. |
---|
976 | * N.B. don't open to alldevs if seen specific dev already, else |
---|
977 | * remote client connections start returning too much. |
---|
978 | */ |
---|
979 | if (dev[0]) |
---|
980 | addClDevice (cp, dev, name); |
---|
981 | else if (!strcmp (roottag, "getProperties") && !cp->nprops) |
---|
982 | cp->allprops = 1; |
---|
983 | |
---|
984 | /* snag enableBLOB -- send to remote drivers too */ |
---|
985 | if (!strcmp (roottag, "enableBLOB")) |
---|
986 | crackBLOB (pcdataXMLEle(root), &cp->blob); |
---|
987 | |
---|
988 | /* build a new message -- set content iff anyone cares */ |
---|
989 | mp = newMsg(); |
---|
990 | |
---|
991 | /* send message to driver(s) responsible for dev */ |
---|
992 | q2RDrivers (dev, mp, root); |
---|
993 | |
---|
994 | /* echo new* commands back to other clients */ |
---|
995 | if (!strncmp (roottag, "new", 3)) { |
---|
996 | if (q2Clients (cp, isblob, dev, name, mp, root) < 0) |
---|
997 | shutany++; |
---|
998 | } |
---|
999 | |
---|
1000 | /* set message content if anyone cares else forget it */ |
---|
1001 | if (mp->count > 0) |
---|
1002 | setMsgXMLEle (mp, root); |
---|
1003 | else |
---|
1004 | freeMsg (mp); |
---|
1005 | delXMLEle (root); |
---|
1006 | |
---|
1007 | } else if (err[0]) { |
---|
1008 | char *ts = indi_tstamp(NULL); |
---|
1009 | fprintf (stderr, "%s: Client %d: XML error: %s\n", ts, |
---|
1010 | cp->s, err); |
---|
1011 | fprintf (stderr, "%s: Client %d: XML read: %.*s\n", ts, |
---|
1012 | cp->s, nr, buf); |
---|
1013 | shutdownClient (cp); |
---|
1014 | return (-1); |
---|
1015 | } |
---|
1016 | } |
---|
1017 | |
---|
1018 | return (shutany ? -1 : 0); |
---|
1019 | } |
---|
1020 | |
---|
1021 | /* read more from the given driver, send to each interested client when see |
---|
1022 | * xml closure. if driver dies, try restarting. |
---|
1023 | * return 0 if ok else -1 if had to shut down anything. |
---|
1024 | */ |
---|
1025 | static int |
---|
1026 | readFromDriver (DvrInfo *dp) |
---|
1027 | { |
---|
1028 | char buf[MAXRBUF]; |
---|
1029 | int shutany = 0; |
---|
1030 | int i, nr; |
---|
1031 | |
---|
1032 | /* read driver */ |
---|
1033 | nr = read (dp->rfd, buf, sizeof(buf)); |
---|
1034 | if (nr <= 0) { |
---|
1035 | if (nr < 0) |
---|
1036 | fprintf (stderr, "%s: Driver %s: stdin %s\n", indi_tstamp(NULL), |
---|
1037 | dp->name, strerror(errno)); |
---|
1038 | else |
---|
1039 | fprintf (stderr, "%s: Driver %s: stdin EOF\n", |
---|
1040 | indi_tstamp(NULL), dp->name); |
---|
1041 | shutdownDvr (dp, 1); |
---|
1042 | return (-1); |
---|
1043 | } |
---|
1044 | |
---|
1045 | /* process XML, sending when find closure */ |
---|
1046 | for (i = 0; i < nr; i++) { |
---|
1047 | char err[1024]; |
---|
1048 | XMLEle *root = readXMLEle (dp->lp, buf[i], err); |
---|
1049 | if (root) { |
---|
1050 | char *roottag = tagXMLEle(root); |
---|
1051 | const char *dev = findXMLAttValu (root, "device"); |
---|
1052 | const char *name = findXMLAttValu (root, "name"); |
---|
1053 | int isblob = !strcmp (tagXMLEle(root), "setBLOBVector"); |
---|
1054 | Msg *mp; |
---|
1055 | |
---|
1056 | if (verbose > 2) { |
---|
1057 | fprintf(stderr, "%s: Driver %s: read ", indi_tstamp(0),dp->name); |
---|
1058 | traceMsg (root); |
---|
1059 | } else if (verbose > 1) { |
---|
1060 | fprintf (stderr, "%s: Driver %s: read <%s device='%s' name='%s'>\n", |
---|
1061 | indi_tstamp(NULL), dp->name, tagXMLEle(root), |
---|
1062 | findXMLAttValu (root, "device"), |
---|
1063 | findXMLAttValu (root, "name")); |
---|
1064 | } |
---|
1065 | |
---|
1066 | /* that's all if driver is just registering a snoop */ |
---|
1067 | if (!strcmp (roottag, "getProperties")) { |
---|
1068 | addSDevice (dp, dev, name); |
---|
1069 | delXMLEle (root); |
---|
1070 | continue; |
---|
1071 | } |
---|
1072 | |
---|
1073 | /* that's all if driver is just registering a BLOB mode */ |
---|
1074 | if (!strcmp (roottag, "enableBLOB")) { |
---|
1075 | Snoopee *sp = findSDevice (dp, dev, name); |
---|
1076 | if (sp) |
---|
1077 | crackBLOB (pcdataXMLEle (root), &sp->blob); |
---|
1078 | delXMLEle (root); |
---|
1079 | continue; |
---|
1080 | } |
---|
1081 | |
---|
1082 | /* snag device name if not known yet */ |
---|
1083 | if (!dp->dev[0] && dev[0]) { |
---|
1084 | strncpy (dp->dev, dev, MAXINDIDEVICE-1); |
---|
1085 | dp->dev[MAXINDIDEVICE-1] = '\0'; |
---|
1086 | } |
---|
1087 | |
---|
1088 | /* log messages if any and wanted */ |
---|
1089 | if (ldir) |
---|
1090 | logDMsg (root, dev); |
---|
1091 | |
---|
1092 | /* build a new message -- set content iff anyone cares */ |
---|
1093 | mp = newMsg(); |
---|
1094 | |
---|
1095 | /* send to interested clients */ |
---|
1096 | if (q2Clients (NULL, isblob, dev, name, mp, root) < 0) |
---|
1097 | shutany++; |
---|
1098 | |
---|
1099 | /* send to snooping drivers */ |
---|
1100 | q2SDrivers (isblob, dev, name, mp, root); |
---|
1101 | |
---|
1102 | /* set message content if anyone cares else forget it */ |
---|
1103 | if (mp->count > 0) |
---|
1104 | setMsgXMLEle (mp, root); |
---|
1105 | else |
---|
1106 | freeMsg (mp); |
---|
1107 | delXMLEle (root); |
---|
1108 | |
---|
1109 | } else if (err[0]) { |
---|
1110 | char *ts = indi_tstamp(NULL); |
---|
1111 | fprintf (stderr, "%s: Driver %s: XML error: %s\n", ts, |
---|
1112 | dp->name, err); |
---|
1113 | fprintf (stderr, "%s: Driver %s: XML read: %.*s\n", ts, |
---|
1114 | dp->name, nr, buf); |
---|
1115 | shutdownDvr (dp, 1); |
---|
1116 | return (-1); |
---|
1117 | } |
---|
1118 | } |
---|
1119 | |
---|
1120 | return (shutany ? -1 : 0); |
---|
1121 | } |
---|
1122 | |
---|
1123 | /* read more from the given driver stderr, add prefix and send to our stderr. |
---|
1124 | * return 0 if ok else -1 if had to restart. |
---|
1125 | */ |
---|
1126 | static int |
---|
1127 | stderrFromDriver (DvrInfo *dp) |
---|
1128 | { |
---|
1129 | static char exbuf[MAXRBUF]; |
---|
1130 | static int nexbuf; |
---|
1131 | int i, nr; |
---|
1132 | |
---|
1133 | /* read more */ |
---|
1134 | nr = read (dp->efd, exbuf+nexbuf, sizeof(exbuf)-nexbuf); |
---|
1135 | if (nr <= 0) { |
---|
1136 | if (nr < 0) |
---|
1137 | fprintf (stderr, "%s: Driver %s: stderr %s\n", indi_tstamp(NULL), |
---|
1138 | dp->name, strerror(errno)); |
---|
1139 | else |
---|
1140 | fprintf (stderr, "%s: Driver %s: stderr EOF\n", |
---|
1141 | indi_tstamp(NULL), dp->name); |
---|
1142 | shutdownDvr (dp, 1); |
---|
1143 | return (-1); |
---|
1144 | } |
---|
1145 | nexbuf += nr; |
---|
1146 | |
---|
1147 | /* prefix each whole line to our stderr, save extra for next time */ |
---|
1148 | for (i = 0; i < nexbuf; i++) { |
---|
1149 | if (exbuf[i] == '\n') { |
---|
1150 | fprintf (stderr, "%s: Driver %s: %.*s\n", indi_tstamp(NULL), |
---|
1151 | dp->name, i, exbuf); |
---|
1152 | i++; /* count including nl */ |
---|
1153 | nexbuf -= i; /* remove from nexbuf */ |
---|
1154 | memmove (exbuf, exbuf+i, nexbuf); /* slide remaining to front */ |
---|
1155 | i = -1; /* restart for loop scan */ |
---|
1156 | } |
---|
1157 | } |
---|
1158 | |
---|
1159 | return (0); |
---|
1160 | } |
---|
1161 | |
---|
1162 | /* close down the given client */ |
---|
1163 | static void |
---|
1164 | shutdownClient (ClInfo *cp) |
---|
1165 | { |
---|
1166 | Msg *mp; |
---|
1167 | |
---|
1168 | /* close connection */ |
---|
1169 | shutdown (cp->s, SHUT_RDWR); |
---|
1170 | close (cp->s); |
---|
1171 | |
---|
1172 | /* free memory */ |
---|
1173 | delLilXML (cp->lp); |
---|
1174 | free (cp->props); |
---|
1175 | |
---|
1176 | /* decrement and possibly free any unsent messages for this client */ |
---|
1177 | while ((mp = (Msg*) popFQ(cp->msgq)) != NULL) |
---|
1178 | if (--mp->count == 0) |
---|
1179 | freeMsg (mp); |
---|
1180 | delFQ (cp->msgq); |
---|
1181 | |
---|
1182 | /* ok now to recycle */ |
---|
1183 | cp->active = 0; |
---|
1184 | |
---|
1185 | if (verbose > 0) |
---|
1186 | fprintf (stderr, "%s: Client %d: shut down complete - bye!\n", |
---|
1187 | indi_tstamp(NULL), cp->s); |
---|
1188 | } |
---|
1189 | |
---|
1190 | /* close down the given driver and restart */ |
---|
1191 | static void |
---|
1192 | shutdownDvr (DvrInfo *dp, int restart) |
---|
1193 | { |
---|
1194 | Msg *mp; |
---|
1195 | |
---|
1196 | /* make sure it's dead, reclaim resources */ |
---|
1197 | if (dp->pid == REMOTEDVR) { |
---|
1198 | /* socket connection */ |
---|
1199 | shutdown (dp->wfd, SHUT_RDWR); |
---|
1200 | close (dp->wfd); /* same as rfd */ |
---|
1201 | } else { |
---|
1202 | /* local pipe connection */ |
---|
1203 | kill (dp->pid, SIGKILL); /* we've insured there are no zombies */ |
---|
1204 | close (dp->wfd); |
---|
1205 | close (dp->rfd); |
---|
1206 | close (dp->efd); |
---|
1207 | } |
---|
1208 | |
---|
1209 | /* free memory */ |
---|
1210 | free (dp->sprops); |
---|
1211 | delLilXML (dp->lp); |
---|
1212 | |
---|
1213 | /* ok now to recycle */ |
---|
1214 | dp->active = 0; |
---|
1215 | |
---|
1216 | /* decrement and possibly free any unsent messages for this client */ |
---|
1217 | while ((mp = (Msg*) popFQ(dp->msgq)) != NULL) |
---|
1218 | if (--mp->count == 0) |
---|
1219 | freeMsg (mp); |
---|
1220 | delFQ (dp->msgq); |
---|
1221 | |
---|
1222 | if (restart) |
---|
1223 | { |
---|
1224 | fprintf (stderr, "%s: Driver %s: restart #%d\n", indi_tstamp(NULL), |
---|
1225 | dp->name, ++dp->restarts); |
---|
1226 | startDvr (dp); |
---|
1227 | } |
---|
1228 | |
---|
1229 | } |
---|
1230 | |
---|
1231 | /* put Msg mp on queue of each driver responsible for dev, or all drivers |
---|
1232 | * if dev not specified. |
---|
1233 | */ |
---|
1234 | static void |
---|
1235 | q2RDrivers (const char *dev, Msg *mp, XMLEle *root) |
---|
1236 | { |
---|
1237 | int sawremote = 0; |
---|
1238 | DvrInfo *dp; |
---|
1239 | |
---|
1240 | /* queue message to each interested driver. |
---|
1241 | * N.B. don't send generic getProps to more than one remote driver, |
---|
1242 | * otherwise they all fan out and we get multiple responses back. |
---|
1243 | */ |
---|
1244 | for (dp = dvrinfo; dp < &dvrinfo[ndvrinfo]; dp++) { |
---|
1245 | int isremote = (dp->pid == REMOTEDVR); |
---|
1246 | if (dev[0] && dp->dev[0] && strcmp (dev, dp->dev)) |
---|
1247 | continue; /* driver known to not support this dev */ |
---|
1248 | if (!dev[0] && isremote && sawremote) |
---|
1249 | continue; /* already sent generic to another remote */ |
---|
1250 | if (isremote) |
---|
1251 | sawremote = 1; |
---|
1252 | |
---|
1253 | /* ok: queue message to this driver */ |
---|
1254 | mp->count++; |
---|
1255 | pushFQ (dp->msgq, mp); |
---|
1256 | if (verbose > 1) |
---|
1257 | fprintf (stderr, "%s: Driver %s: queuing responsible for <%s device='%s' name='%s'>\n", |
---|
1258 | indi_tstamp(NULL), dp->name, tagXMLEle(root), |
---|
1259 | findXMLAttValu (root, "device"), |
---|
1260 | findXMLAttValu (root, "name")); |
---|
1261 | } |
---|
1262 | } |
---|
1263 | |
---|
1264 | /* put Msg mp on queue of each driver snooping dev/name. |
---|
1265 | * if BLOB always honor current mode. |
---|
1266 | */ |
---|
1267 | static void |
---|
1268 | q2SDrivers (int isblob, const char *dev, const char *name, Msg *mp, XMLEle *root) |
---|
1269 | { |
---|
1270 | DvrInfo *dp; |
---|
1271 | |
---|
1272 | for (dp = dvrinfo; dp < &dvrinfo[ndvrinfo]; dp++) { |
---|
1273 | Snoopee *sp = findSDevice (dp, dev, name); |
---|
1274 | |
---|
1275 | /* nothing for dp if not snooping for dev/name or wrong BLOB mode */ |
---|
1276 | if (!sp) |
---|
1277 | continue; |
---|
1278 | if ((isblob && sp->blob==B_NEVER) || (!isblob && sp->blob==B_ONLY)) |
---|
1279 | continue; |
---|
1280 | |
---|
1281 | /* ok: queue message to this device */ |
---|
1282 | mp->count++; |
---|
1283 | pushFQ (dp->msgq, mp); |
---|
1284 | if (verbose > 1) { |
---|
1285 | fprintf (stderr, "%s: Driver %s: queuing snooped <%s device='%s' name='%s'>\n", |
---|
1286 | indi_tstamp(NULL), dp->name, tagXMLEle(root), |
---|
1287 | findXMLAttValu (root, "device"), |
---|
1288 | findXMLAttValu (root, "name")); |
---|
1289 | } |
---|
1290 | } |
---|
1291 | } |
---|
1292 | |
---|
1293 | /* add dev/name to dp's snooping list. |
---|
1294 | * init with blob mode set to B_NEVER. |
---|
1295 | */ |
---|
1296 | static void |
---|
1297 | addSDevice (DvrInfo *dp, const char *dev, const char *name) |
---|
1298 | { |
---|
1299 | Snoopee *sp; |
---|
1300 | char *ip; |
---|
1301 | |
---|
1302 | /* no dups */ |
---|
1303 | sp = findSDevice (dp, dev, name); |
---|
1304 | if (sp) |
---|
1305 | return; |
---|
1306 | |
---|
1307 | /* add dev to sdevs list */ |
---|
1308 | dp->sprops = (Snoopee*) realloc (dp->sprops, |
---|
1309 | (dp->nsprops+1)*sizeof(Snoopee)); |
---|
1310 | sp = &dp->sprops[dp->nsprops++]; |
---|
1311 | |
---|
1312 | ip = sp->prop.dev; |
---|
1313 | strncpy (ip, dev, MAXINDIDEVICE-1); |
---|
1314 | ip[MAXINDIDEVICE-1] = '\0'; |
---|
1315 | |
---|
1316 | ip = sp->prop.name; |
---|
1317 | strncpy (ip, name, MAXINDINAME-1); |
---|
1318 | ip[MAXINDINAME-1] = '\0'; |
---|
1319 | |
---|
1320 | sp->blob = B_NEVER; |
---|
1321 | |
---|
1322 | if (verbose) |
---|
1323 | fprintf (stderr, "%s: Driver %s: snooping on %s.%s\n", indi_tstamp(NULL), |
---|
1324 | dp->name, dev, name); |
---|
1325 | } |
---|
1326 | |
---|
1327 | /* return Snoopee if dp is snooping dev/name, else NULL. |
---|
1328 | */ |
---|
1329 | static Snoopee * |
---|
1330 | findSDevice (DvrInfo *dp, const char *dev, const char *name) |
---|
1331 | { |
---|
1332 | int i; |
---|
1333 | |
---|
1334 | for (i = 0; i < dp->nsprops; i++) { |
---|
1335 | Snoopee *sp = &dp->sprops[i]; |
---|
1336 | Property *pp = &sp->prop; |
---|
1337 | if (!strcmp (pp->dev, dev) && |
---|
1338 | (!pp->name[0] || !strcmp(pp->name, name))) |
---|
1339 | return (sp); |
---|
1340 | } |
---|
1341 | |
---|
1342 | return (NULL); |
---|
1343 | } |
---|
1344 | |
---|
1345 | /* put Msg mp on queue of each client interested in dev/name, except notme. |
---|
1346 | * if BLOB always honor current mode. |
---|
1347 | * return -1 if had to shut down any clients, else 0. |
---|
1348 | */ |
---|
1349 | static int |
---|
1350 | q2Clients (ClInfo *notme, int isblob, const char *dev, const char *name, Msg *mp, XMLEle *root) |
---|
1351 | { |
---|
1352 | int shutany = 0; |
---|
1353 | ClInfo *cp; |
---|
1354 | int ql; |
---|
1355 | |
---|
1356 | /* queue message to each interested client */ |
---|
1357 | for (cp = clinfo; cp < &clinfo[nclinfo]; cp++) { |
---|
1358 | /* cp in use? notme? want this dev/name? blob? */ |
---|
1359 | if (!cp->active || cp == notme) |
---|
1360 | continue; |
---|
1361 | if (findClDevice (cp, dev, name) < 0) |
---|
1362 | continue; |
---|
1363 | if ((isblob && cp->blob==B_NEVER) || (!isblob && cp->blob==B_ONLY)) |
---|
1364 | continue; |
---|
1365 | |
---|
1366 | /* shut down this client if its q is already too large */ |
---|
1367 | ql = msgQSize(cp->msgq); |
---|
1368 | if (ql > maxqsiz) { |
---|
1369 | if (verbose) |
---|
1370 | fprintf (stderr, "%s: Client %d: %d bytes behind, shutting down\n", |
---|
1371 | indi_tstamp(NULL), cp->s, ql); |
---|
1372 | shutdownClient (cp); |
---|
1373 | shutany++; |
---|
1374 | continue; |
---|
1375 | } |
---|
1376 | |
---|
1377 | /* ok: queue message to this client */ |
---|
1378 | mp->count++; |
---|
1379 | pushFQ (cp->msgq, mp); |
---|
1380 | if (verbose > 1) |
---|
1381 | fprintf (stderr, "%s: Client %d: queuing <%s device='%s' name='%s'>\n", |
---|
1382 | indi_tstamp(NULL), cp->s, tagXMLEle(root), |
---|
1383 | findXMLAttValu (root, "device"), |
---|
1384 | findXMLAttValu (root, "name")); |
---|
1385 | } |
---|
1386 | |
---|
1387 | return (shutany ? -1 : 0); |
---|
1388 | } |
---|
1389 | |
---|
1390 | /* return size of all Msqs on the given q */ |
---|
1391 | static int |
---|
1392 | msgQSize (FQ *q) |
---|
1393 | { |
---|
1394 | int i, l = 0; |
---|
1395 | |
---|
1396 | for (i = 0; i < nFQ(q); i++) { |
---|
1397 | Msg *mp = (Msg *) peekiFQ(q,i); |
---|
1398 | l += mp->cl; |
---|
1399 | } |
---|
1400 | |
---|
1401 | return (l); |
---|
1402 | } |
---|
1403 | |
---|
1404 | /* print root as content in Msg mp. |
---|
1405 | */ |
---|
1406 | static void |
---|
1407 | setMsgXMLEle (Msg *mp, XMLEle *root) |
---|
1408 | { |
---|
1409 | /* want cl to only count content, but need room for final \0 */ |
---|
1410 | mp->cl = sprlXMLEle (root, 0); |
---|
1411 | if (mp->cl < sizeof(mp->buf)) |
---|
1412 | mp->cp = mp->buf; |
---|
1413 | else |
---|
1414 | mp->cp = malloc (mp->cl+1); |
---|
1415 | sprXMLEle (mp->cp, root, 0); |
---|
1416 | } |
---|
1417 | |
---|
1418 | /* save str as content in Msg mp. |
---|
1419 | */ |
---|
1420 | static void |
---|
1421 | setMsgStr (Msg *mp, char *str) |
---|
1422 | { |
---|
1423 | /* want cl to only count content, but need room for final \0 */ |
---|
1424 | mp->cl = strlen (str); |
---|
1425 | if (mp->cl < sizeof(mp->buf)) |
---|
1426 | mp->cp = mp->buf; |
---|
1427 | else |
---|
1428 | mp->cp = malloc (mp->cl+1); |
---|
1429 | strcpy (mp->cp, str); |
---|
1430 | } |
---|
1431 | |
---|
1432 | /* return pointer to one new nulled Msg |
---|
1433 | */ |
---|
1434 | static Msg * |
---|
1435 | newMsg (void) |
---|
1436 | { |
---|
1437 | return ((Msg *) calloc (1, sizeof(Msg))); |
---|
1438 | } |
---|
1439 | |
---|
1440 | /* free Msg mp and everything it contains */ |
---|
1441 | static void |
---|
1442 | freeMsg (Msg *mp) |
---|
1443 | { |
---|
1444 | if (mp->cp && mp->cp != mp->buf) |
---|
1445 | free (mp->cp); |
---|
1446 | free (mp); |
---|
1447 | } |
---|
1448 | |
---|
1449 | /* write the next chunk of the current message in the queue to the given |
---|
1450 | * client. pop message from queue when complete and free the message if we are |
---|
1451 | * the last one to use it. shut down this client if trouble. |
---|
1452 | * N.B. we assume we will never be called with cp->msgq empty. |
---|
1453 | * return 0 if ok else -1 if had to shut down. |
---|
1454 | */ |
---|
1455 | static int |
---|
1456 | sendClientMsg (ClInfo *cp) |
---|
1457 | { |
---|
1458 | int nsend, nw; |
---|
1459 | Msg *mp; |
---|
1460 | |
---|
1461 | /* get current message */ |
---|
1462 | mp = (Msg *) peekFQ (cp->msgq); |
---|
1463 | |
---|
1464 | /* send next chunk, never more than MAXWSIZ to reduce blocking */ |
---|
1465 | nsend = mp->cl - cp->nsent; |
---|
1466 | if (nsend > MAXWSIZ) |
---|
1467 | nsend = MAXWSIZ; |
---|
1468 | nw = write (cp->s, &mp->cp[cp->nsent], nsend); |
---|
1469 | |
---|
1470 | /* shut down if trouble */ |
---|
1471 | if (nw <= 0) { |
---|
1472 | if (nw == 0) |
---|
1473 | fprintf (stderr, "%s: Client %d: write returned 0\n", |
---|
1474 | indi_tstamp(NULL), cp->s); |
---|
1475 | else |
---|
1476 | fprintf (stderr, "%s: Client %d: write: %s\n", indi_tstamp(NULL), |
---|
1477 | cp->s, strerror(errno)); |
---|
1478 | shutdownClient (cp); |
---|
1479 | return (-1); |
---|
1480 | } |
---|
1481 | |
---|
1482 | /* trace */ |
---|
1483 | if (verbose > 2) { |
---|
1484 | fprintf(stderr, "%s: Client %d: sending msg copy %d nq %d:\n%.*s\n", |
---|
1485 | indi_tstamp(NULL), cp->s, mp->count, nFQ(cp->msgq), |
---|
1486 | nw, &mp->cp[cp->nsent]); |
---|
1487 | } else if (verbose > 1) { |
---|
1488 | fprintf(stderr, "%s: Client %d: sending %.50s\n", indi_tstamp(NULL), |
---|
1489 | cp->s, &mp->cp[cp->nsent]); |
---|
1490 | } |
---|
1491 | |
---|
1492 | /* update amount sent. when complete: free message if we are the last |
---|
1493 | * to use it and pop from our queue. |
---|
1494 | */ |
---|
1495 | cp->nsent += nw; |
---|
1496 | if (cp->nsent == mp->cl) { |
---|
1497 | if (--mp->count == 0) |
---|
1498 | freeMsg (mp); |
---|
1499 | popFQ (cp->msgq); |
---|
1500 | cp->nsent = 0; |
---|
1501 | } |
---|
1502 | |
---|
1503 | return (0); |
---|
1504 | } |
---|
1505 | |
---|
1506 | /* write the next chunk of the current message in the queue to the given |
---|
1507 | * driver. pop message from queue when complete and free the message if we are |
---|
1508 | * the last one to use it. restart this driver if touble. |
---|
1509 | * N.B. we assume we will never be called with dp->msgq empty. |
---|
1510 | * return 0 if ok else -1 if had to shut down. |
---|
1511 | */ |
---|
1512 | static int |
---|
1513 | sendDriverMsg (DvrInfo *dp) |
---|
1514 | { |
---|
1515 | int nsend, nw; |
---|
1516 | Msg *mp; |
---|
1517 | |
---|
1518 | /* get current message */ |
---|
1519 | mp = (Msg *) peekFQ (dp->msgq); |
---|
1520 | |
---|
1521 | /* send next chunk, never more than MAXWSIZ to reduce blocking */ |
---|
1522 | nsend = mp->cl - dp->nsent; |
---|
1523 | if (nsend > MAXWSIZ) |
---|
1524 | nsend = MAXWSIZ; |
---|
1525 | nw = write (dp->wfd, &mp->cp[dp->nsent], nsend); |
---|
1526 | |
---|
1527 | /* restart if trouble */ |
---|
1528 | if (nw <= 0) { |
---|
1529 | if (nw == 0) |
---|
1530 | fprintf (stderr, "%s: Driver %s: write returned 0\n", |
---|
1531 | indi_tstamp(NULL), dp->name); |
---|
1532 | else |
---|
1533 | fprintf (stderr, "%s: Driver %s: write: %s\n", indi_tstamp(NULL), |
---|
1534 | dp->name, strerror(errno)); |
---|
1535 | shutdownDvr (dp, 1); |
---|
1536 | return (-1); |
---|
1537 | } |
---|
1538 | |
---|
1539 | /* trace */ |
---|
1540 | if (verbose > 2) { |
---|
1541 | fprintf(stderr, "%s: Driver %s: sending msg copy %d nq %d:\n%.*s\n", |
---|
1542 | indi_tstamp(NULL), dp->name, mp->count, nFQ(dp->msgq), |
---|
1543 | nw, &mp->cp[dp->nsent]); |
---|
1544 | } else if (verbose > 1) { |
---|
1545 | fprintf(stderr, "%s: Driver %s: sending %.50s\n", indi_tstamp(NULL), |
---|
1546 | dp->name, &mp->cp[dp->nsent]); |
---|
1547 | } |
---|
1548 | |
---|
1549 | /* update amount sent. when complete: free message if we are the last |
---|
1550 | * to use it and pop from our queue. |
---|
1551 | */ |
---|
1552 | dp->nsent += nw; |
---|
1553 | if (dp->nsent == mp->cl) { |
---|
1554 | if (--mp->count == 0) |
---|
1555 | freeMsg (mp); |
---|
1556 | popFQ (dp->msgq); |
---|
1557 | dp->nsent = 0; |
---|
1558 | } |
---|
1559 | |
---|
1560 | return (0); |
---|
1561 | } |
---|
1562 | |
---|
1563 | /* return 0 if cp may be interested in dev/name else -1 |
---|
1564 | */ |
---|
1565 | static int |
---|
1566 | findClDevice (ClInfo *cp, const char *dev, const char *name) |
---|
1567 | { |
---|
1568 | int i; |
---|
1569 | |
---|
1570 | if (cp->allprops || !dev[0]) |
---|
1571 | return (0); |
---|
1572 | for (i = 0; i < cp->nprops; i++) { |
---|
1573 | Property *pp = &cp->props[i]; |
---|
1574 | if (!strcmp (pp->dev, dev) && |
---|
1575 | (!pp->name[0] || !strcmp(pp->name, name))) |
---|
1576 | return (0); |
---|
1577 | } |
---|
1578 | return (-1); |
---|
1579 | } |
---|
1580 | |
---|
1581 | /* add the given device and property to the devs[] list of client if new. |
---|
1582 | */ |
---|
1583 | static void |
---|
1584 | addClDevice (ClInfo *cp, const char *dev, const char *name) |
---|
1585 | { |
---|
1586 | Property *pp; |
---|
1587 | char *ip; |
---|
1588 | |
---|
1589 | /* no dups */ |
---|
1590 | if (!findClDevice (cp, dev, name)) |
---|
1591 | return; |
---|
1592 | |
---|
1593 | /* add */ |
---|
1594 | cp->props = (Property *) realloc (cp->props, |
---|
1595 | (cp->nprops+1)*sizeof(Property)); |
---|
1596 | pp = &cp->props[cp->nprops++]; |
---|
1597 | |
---|
1598 | ip = pp->dev; |
---|
1599 | strncpy (ip, dev, MAXINDIDEVICE-1); |
---|
1600 | ip[MAXINDIDEVICE-1] = '\0'; |
---|
1601 | |
---|
1602 | ip = pp->name; |
---|
1603 | strncpy (ip, name, MAXINDINAME-1); |
---|
1604 | ip[MAXINDINAME-1] = '\0'; |
---|
1605 | } |
---|
1606 | |
---|
1607 | |
---|
1608 | /* block to accept a new client arriving on lsocket. |
---|
1609 | * return private nonblocking socket or exit. |
---|
1610 | */ |
---|
1611 | static int |
---|
1612 | newClSocket () |
---|
1613 | { |
---|
1614 | struct sockaddr_in cli_socket; |
---|
1615 | socklen_t cli_len; |
---|
1616 | int cli_fd; |
---|
1617 | |
---|
1618 | /* get a private connection to new client */ |
---|
1619 | cli_len = sizeof(cli_socket); |
---|
1620 | cli_fd = accept (lsocket, (struct sockaddr *)&cli_socket, &cli_len); |
---|
1621 | if(cli_fd < 0) { |
---|
1622 | fprintf (stderr, "accept: %s\n", strerror(errno)); |
---|
1623 | Bye(); |
---|
1624 | } |
---|
1625 | |
---|
1626 | /* ok */ |
---|
1627 | return (cli_fd); |
---|
1628 | } |
---|
1629 | |
---|
1630 | /* convert the string value of enableBLOB to our B_ state value. |
---|
1631 | * no change if unrecognized |
---|
1632 | */ |
---|
1633 | static void |
---|
1634 | crackBLOB (char *enableBLOB, BLOBHandling *bp) |
---|
1635 | { |
---|
1636 | if (!strcmp (enableBLOB, "Also")) |
---|
1637 | *bp = B_ALSO; |
---|
1638 | else if (!strcmp (enableBLOB, "Only")) |
---|
1639 | *bp = B_ONLY; |
---|
1640 | else if (!strcmp (enableBLOB, "Never")) |
---|
1641 | *bp = B_NEVER; |
---|
1642 | } |
---|
1643 | |
---|
1644 | /* print key attributes and values of the given xml to stderr. |
---|
1645 | */ |
---|
1646 | static void |
---|
1647 | traceMsg (XMLEle *root) |
---|
1648 | { |
---|
1649 | static const char *prtags[] = { |
---|
1650 | "defNumber", "oneNumber", |
---|
1651 | "defText", "oneText", |
---|
1652 | "defSwitch", "oneSwitch", |
---|
1653 | "defLight", "oneLight", |
---|
1654 | }; |
---|
1655 | XMLEle *e; |
---|
1656 | const char *msg, *perm, *pcd; |
---|
1657 | unsigned int i; |
---|
1658 | |
---|
1659 | /* print tag header */ |
---|
1660 | fprintf (stderr, "%s %s %s %s", tagXMLEle(root), |
---|
1661 | findXMLAttValu(root,"device"), |
---|
1662 | findXMLAttValu(root,"name"), |
---|
1663 | findXMLAttValu(root,"state")); |
---|
1664 | pcd = pcdataXMLEle (root); |
---|
1665 | if (pcd[0]) |
---|
1666 | fprintf (stderr, " %s", pcd); |
---|
1667 | perm = findXMLAttValu(root,"perm"); |
---|
1668 | if (perm[0]) |
---|
1669 | fprintf (stderr, " %s", perm); |
---|
1670 | msg = findXMLAttValu(root,"message"); |
---|
1671 | if (msg[0]) |
---|
1672 | fprintf (stderr, " '%s'", msg); |
---|
1673 | |
---|
1674 | /* print each array value */ |
---|
1675 | for (e = nextXMLEle(root,1); e; e = nextXMLEle(root,0)) |
---|
1676 | for (i = 0; i < sizeof(prtags)/sizeof(prtags[0]); i++) |
---|
1677 | if (strcmp (prtags[i], tagXMLEle(e)) == 0) |
---|
1678 | fprintf (stderr, "\n %10s='%s'", findXMLAttValu(e,"name"), |
---|
1679 | pcdataXMLEle (e)); |
---|
1680 | |
---|
1681 | fprintf (stderr, "\n"); |
---|
1682 | } |
---|
1683 | |
---|
1684 | /* fill s with current UT string. |
---|
1685 | * if no s, use a static buffer |
---|
1686 | * return s or buffer. |
---|
1687 | * N.B. if use our buffer, be sure to use before calling again |
---|
1688 | */ |
---|
1689 | static char * |
---|
1690 | indi_tstamp (char *s) |
---|
1691 | { |
---|
1692 | static char sbuf[64]; |
---|
1693 | struct tm *tp; |
---|
1694 | time_t t; |
---|
1695 | |
---|
1696 | time (&t); |
---|
1697 | tp = gmtime (&t); |
---|
1698 | if (!s) |
---|
1699 | s = sbuf; |
---|
1700 | strftime (s, sizeof(sbuf), "%Y-%m-%dT%H:%M:%S", tp); |
---|
1701 | return (s); |
---|
1702 | } |
---|
1703 | |
---|
1704 | /* log message in root known to be from device dev to ldir, if any. |
---|
1705 | */ |
---|
1706 | static void |
---|
1707 | logDMsg (XMLEle *root, const char *dev) |
---|
1708 | { |
---|
1709 | char stamp[64]; |
---|
1710 | char logfn[1024]; |
---|
1711 | const char *ts, *ms; |
---|
1712 | FILE *fp; |
---|
1713 | |
---|
1714 | /* get message, if any */ |
---|
1715 | ms = findXMLAttValu (root, "message"); |
---|
1716 | if (!ms[0]) |
---|
1717 | return; |
---|
1718 | |
---|
1719 | /* get timestamp now if not provided */ |
---|
1720 | ts = findXMLAttValu (root, "timestamp"); |
---|
1721 | if (!ts[0]) |
---|
1722 | { |
---|
1723 | indi_tstamp (stamp); |
---|
1724 | ts = stamp; |
---|
1725 | } |
---|
1726 | |
---|
1727 | /* append to log file, name is date portion of time stamp */ |
---|
1728 | sprintf (logfn, "%s/%.10s.islog", ldir, ts); |
---|
1729 | fp = fopen (logfn, "a"); |
---|
1730 | if (!fp) |
---|
1731 | return; /* oh well */ |
---|
1732 | fprintf (fp, "%s: %s: %s\n", ts, dev, ms); |
---|
1733 | fclose (fp); |
---|
1734 | } |
---|
1735 | |
---|
1736 | /* log when then exit */ |
---|
1737 | static void |
---|
1738 | Bye() |
---|
1739 | { |
---|
1740 | fprintf (stderr, "%s: good bye\n", indi_tstamp(NULL)); |
---|
1741 | exit(1); |
---|
1742 | } |
---|
1743 | |
---|