[579] | 1 | /* |
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[1] | 2 | * Author : Gérald FENOY |
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| 3 | * |
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[576] | 4 | * Copyright (c) 2009-2015 GeoLabs SARL |
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[1] | 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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| 7 | * of this software and associated documentation files (the "Software"), to deal |
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| 8 | * in the Software without restriction, including without limitation the rights |
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| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 10 | * copies of the Software, and to permit persons to whom the Software is |
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| 11 | * furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included in |
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| 14 | * all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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| 22 | * THE SOFTWARE. |
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| 23 | */ |
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| 24 | |
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| 25 | #include "service_internal.h" |
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[649] | 26 | #ifdef USE_MS |
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| 27 | #include "service_internal_ms.h" |
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| 28 | #else |
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| 29 | #include "cpl_vsi.h" |
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| 30 | #endif |
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[216] | 31 | |
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[365] | 32 | #ifndef TRUE |
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| 33 | #define TRUE 1 |
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| 34 | #endif |
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| 35 | #ifndef FALSE |
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| 36 | #define FALSE -1 |
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| 37 | #endif |
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| 38 | |
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[578] | 39 | #define ERROR_MSG_MAX_LENGTH 1024 |
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[652] | 40 | #ifndef RELY_ON_DB |
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| 41 | #include <dirent.h> |
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[578] | 42 | |
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[579] | 43 | /** |
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[652] | 44 | * Read the sid file attached of a service if any |
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[579] | 45 | * |
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| 46 | * @param conf the maps containing the setting of the main.cfg file |
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| 47 | * @param pid the service identifier (usid key from the [lenv] section) |
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[652] | 48 | * @return the reported status char* (temporary/final result) |
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[579] | 49 | */ |
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[652] | 50 | char* getStatusId(maps* conf,char* pid){ |
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| 51 | map* r_inputs = getMapFromMaps (conf, "main", "tmpPath"); |
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| 52 | char* fbkpid = |
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| 53 | (char *) |
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| 54 | malloc ((strlen (r_inputs->value) + strlen (pid) + 7) * sizeof (char)); |
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| 55 | sprintf (fbkpid, "%s/%s.sid", r_inputs->value, pid); |
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| 56 | FILE* f0 = fopen (fbkpid, "r"); |
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| 57 | if(f0!=NULL){ |
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[653] | 58 | long flen; |
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| 59 | char *fcontent; |
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[652] | 60 | fseek (f0, 0, SEEK_END); |
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[653] | 61 | flen = ftell (f0); |
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[652] | 62 | fseek (f0, 0, SEEK_SET); |
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[653] | 63 | fcontent = (char *) malloc ((flen + 1) * sizeof (char)); |
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| 64 | fread(fcontent,flen,1,f0); |
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| 65 | fcontent[flen]=0; |
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[652] | 66 | fclose(f0); |
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[653] | 67 | return fcontent; |
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[652] | 68 | }else |
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| 69 | return NULL; |
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| 70 | } |
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| 71 | |
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| 72 | /** |
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| 73 | * Acquire the global lock |
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| 74 | * |
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| 75 | * @param conf the maps containing the setting of the main.cfg file |
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| 76 | * @return a semid |
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| 77 | */ |
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| 78 | semid acquireLock(maps* conf){ |
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| 79 | semid lockid; |
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| 80 | int itn=0; |
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| 81 | toRetry1: |
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| 82 | lockid=getShmLockId(conf,1); |
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[507] | 83 | if( |
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[216] | 84 | #ifdef WIN32 |
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[507] | 85 | lockid==NULL |
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| 86 | #else |
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| 87 | lockid<0 |
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| 88 | #endif |
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| 89 | ){ |
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[652] | 90 | #ifdef WIN32 |
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[680] | 91 | return NULL; |
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[652] | 92 | #else |
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| 93 | return -1; |
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| 94 | #endif |
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[507] | 95 | } |
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| 96 | if(lockShm(lockid)<0){ |
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[680] | 97 | #ifdef WIN32 |
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| 98 | return NULL; |
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| 99 | #else |
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[652] | 100 | if(itn<ZOO_LOCK_MAX_RETRY){ |
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| 101 | itn++; |
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| 102 | goto toRetry1; |
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| 103 | }else |
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[680] | 104 | return -1; |
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[652] | 105 | #endif |
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| 106 | }else |
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| 107 | return lockid; |
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| 108 | } |
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| 109 | |
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| 110 | /** |
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| 111 | * Read the cache file of a running service |
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| 112 | * |
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| 113 | * @param conf the maps containing the setting of the main.cfg file |
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| 114 | * @param pid the service identifier (usid key from the [lenv] section) |
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| 115 | * @return the reported status char* (temporary/final result) |
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| 116 | */ |
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| 117 | char* _getStatusFile(maps* conf,char* pid){ |
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| 118 | map* tmpTmap = getMapFromMaps (conf, "main", "tmpPath"); |
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| 119 | |
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| 120 | struct dirent *dp; |
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| 121 | DIR *dirp = opendir(tmpTmap->value); |
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| 122 | char fileName[1024]; |
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| 123 | int hasFile=-1; |
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| 124 | if(dirp!=NULL){ |
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| 125 | char tmp[128]; |
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| 126 | sprintf(tmp,"_%s.xml",pid); |
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| 127 | while ((dp = readdir(dirp)) != NULL){ |
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| 128 | #ifdef DEBUG |
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| 129 | fprintf(stderr,"File : %s searched : %s\n",dp->d_name,tmp); |
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| 130 | #endif |
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| 131 | if(strstr(dp->d_name,"final_")==0 && strstr(dp->d_name,tmp)!=0){ |
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| 132 | sprintf(fileName,"%s/%s",tmpTmap->value,dp->d_name); |
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| 133 | hasFile=1; |
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| 134 | break; |
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| 135 | } |
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| 136 | } |
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[507] | 137 | } |
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[652] | 138 | if(hasFile>0){ |
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| 139 | semid lockid; |
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| 140 | char* stat=getStatusId(conf,pid); |
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| 141 | if(stat!=NULL){ |
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| 142 | setMapInMaps(conf,"lenv","lid",stat); |
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| 143 | lockid=acquireLock(conf); |
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| 144 | if(lockid<0) |
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| 145 | return NULL; |
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| 146 | } |
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| 147 | |
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| 148 | FILE* f0 = fopen (fileName, "r"); |
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| 149 | if(f0!=NULL){ |
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| 150 | fseek (f0, 0, SEEK_END); |
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| 151 | long flen = ftell (f0); |
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| 152 | fseek (f0, 0, SEEK_SET); |
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| 153 | char *tmps1 = (char *) malloc ((flen + 1) * sizeof (char)); |
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| 154 | fread(tmps1,flen,1,f0); |
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| 155 | tmps1[flen]=0; |
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| 156 | fclose(f0); |
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| 157 | if(stat!=NULL){ |
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| 158 | unlockShm(lockid); |
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| 159 | free(stat); |
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| 160 | } |
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| 161 | |
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| 162 | return tmps1; |
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| 163 | } |
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| 164 | else{ |
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| 165 | if(stat!=NULL){ |
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| 166 | unlockShm(lockid); |
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| 167 | free(stat); |
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| 168 | } |
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| 169 | return NULL; |
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| 170 | } |
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| 171 | } |
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| 172 | else |
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| 173 | return NULL; |
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| 174 | } |
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| 175 | |
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| 176 | /** |
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| 177 | * Get the ongoing status of a running service |
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| 178 | * |
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| 179 | * @param conf the maps containing the setting of the main.cfg file |
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| 180 | * @param pid the service identifier (usid key from the [lenv] section) |
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| 181 | * @return the reported status char* (MESSAGE|POURCENTAGE) |
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| 182 | */ |
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| 183 | char* _getStatus(maps* conf,char* lid){ |
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| 184 | map* r_inputs = getMapFromMaps (conf, "main", "tmpPath"); |
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| 185 | char* fbkpid = |
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| 186 | (char *) |
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| 187 | malloc ((strlen (r_inputs->value) + strlen (lid) + 9) * sizeof (char)); |
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| 188 | sprintf (fbkpid, "%s/%s.status", r_inputs->value, lid); |
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| 189 | FILE* f0 = fopen (fbkpid, "r"); |
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| 190 | if(f0!=NULL){ |
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[653] | 191 | semid lockid; |
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| 192 | char* stat; |
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| 193 | long flen; |
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| 194 | stat=getStatusId(conf,lid); |
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[652] | 195 | if(stat!=NULL){ |
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| 196 | setMapInMaps(conf,"lenv","lid",stat); |
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[653] | 197 | lockid=acquireLock(conf); |
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[652] | 198 | if(lockid<0) |
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| 199 | return NULL; |
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| 200 | } |
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| 201 | fseek (f0, 0, SEEK_END); |
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[653] | 202 | flen = ftell (f0); |
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[652] | 203 | if(flen>0){ |
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[653] | 204 | char *fcontent; |
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[652] | 205 | fseek (f0, 0, SEEK_SET); |
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[653] | 206 | fcontent = (char *) malloc ((flen + 1) * sizeof (char)); |
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| 207 | fread(fcontent,flen,1,f0); |
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| 208 | fcontent[flen]=0; |
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[652] | 209 | fclose(f0); |
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| 210 | free(fbkpid); |
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| 211 | if(stat!=NULL){ |
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[680] | 212 | #ifndef WIN32 |
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[652] | 213 | removeShmLock(conf,1); |
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[680] | 214 | #else |
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| 215 | unlockShm(lockid); |
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| 216 | #endif |
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[652] | 217 | free(stat); |
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| 218 | } |
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[653] | 219 | return fcontent; |
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[652] | 220 | } |
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| 221 | fclose(f0); |
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| 222 | free(fbkpid); |
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| 223 | if(stat!=NULL){ |
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| 224 | removeShmLock(conf,1); |
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| 225 | free(stat); |
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| 226 | } |
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| 227 | return NULL; |
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| 228 | }else{ |
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| 229 | free(fbkpid); |
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| 230 | char* stat=getStatusId(conf,lid); |
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| 231 | setMapInMaps(conf,"lenv","lid",stat); |
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[507] | 232 | removeShmLock(conf,1); |
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[652] | 233 | return NULL; |
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[507] | 234 | } |
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| 235 | } |
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[216] | 236 | |
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[652] | 237 | /** |
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| 238 | * Stop handling status repport. |
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| 239 | * |
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| 240 | * @param conf the map containing the setting of the main.cfg file |
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| 241 | */ |
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| 242 | void unhandleStatus(maps *conf){ |
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| 243 | map* r_inputs = getMapFromMaps (conf, "main", "tmpPath"); |
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| 244 | map* usid = getMapFromMaps (conf, "lenv", "usid"); |
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| 245 | char* fbkpid = |
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| 246 | (char *) malloc ((strlen (r_inputs->value) + strlen (usid->value) + 9) |
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| 247 | * sizeof (char)); |
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| 248 | sprintf (fbkpid, "%s/%s.status", r_inputs->value, usid->value); |
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| 249 | unlink(fbkpid); |
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| 250 | free(fbkpid); |
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| 251 | } |
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| 252 | |
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| 253 | /** |
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| 254 | * Update the current status of the running service. |
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| 255 | * |
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| 256 | * @see acquireLock, lockShm |
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| 257 | * @param conf the map containing the setting of the main.cfg file |
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| 258 | * @return 0 on success, -2 if shmget failed, -1 if shmat failed |
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| 259 | */ |
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| 260 | int _updateStatus(maps *conf){ |
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| 261 | map* r_inputs = getMapFromMaps (conf, "main", "tmpPath"); |
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| 262 | map* sid = getMapFromMaps (conf, "lenv", "usid"); |
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| 263 | char* fbkpid = |
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| 264 | (char *) |
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| 265 | malloc ((strlen (r_inputs->value) + strlen (sid->value) + 9) * sizeof (char)); |
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| 266 | sprintf (fbkpid, "%s/%s.status", r_inputs->value, sid->value); |
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| 267 | map* status=getMapFromMaps(conf,"lenv","status"); |
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| 268 | map* msg=getMapFromMaps(conf,"lenv","message"); |
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| 269 | if(status!=NULL && msg!=NULL && |
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| 270 | status->value!=NULL && msg->value!=NULL && |
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| 271 | strlen(status->value)>0 && strlen(msg->value)>1){ |
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| 272 | semid lockid; |
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| 273 | char* stat=getStatusId(conf,sid->value); |
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| 274 | if(stat!=NULL){ |
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| 275 | lockid=acquireLock(conf); |
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[680] | 276 | if(lockid<0){ |
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| 277 | dumpMap(status); |
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[652] | 278 | return ZOO_LOCK_ACQUIRE_FAILED; |
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[680] | 279 | } |
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[652] | 280 | } |
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| 281 | FILE* fstatus=fopen(fbkpid,"w"); |
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| 282 | if(fstatus!=NULL){ |
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[654] | 283 | fprintf(fstatus,"%s|%s",status->value,msg->value); |
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[652] | 284 | fflush(fstatus); |
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| 285 | fclose(fstatus); |
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| 286 | } |
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| 287 | if(stat!=NULL){ |
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| 288 | unlockShm(lockid); |
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| 289 | free(stat); |
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| 290 | } |
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| 291 | } |
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| 292 | return 0; |
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| 293 | } |
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| 294 | |
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| 295 | #endif |
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| 296 | |
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[507] | 297 | #ifdef WIN32 |
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| 298 | |
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[216] | 299 | #define SHMEMSIZE 4096 |
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| 300 | |
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[554] | 301 | size_t getKeyValue(maps* conf, char* key, size_t length){ |
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| 302 | if(conf==NULL) { |
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[579] | 303 | strncpy(key, "700666", length); |
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| 304 | return strlen(key); |
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[554] | 305 | } |
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| 306 | |
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[507] | 307 | map *tmpMap=getMapFromMaps(conf,"lenv","lid"); |
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| 308 | if(tmpMap==NULL) |
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[680] | 309 | tmpMap=getMapFromMaps(conf,"lenv","osid"); |
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[554] | 310 | |
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[507] | 311 | if(tmpMap!=NULL){ |
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[680] | 312 | snprintf(key, length, "zoo_sem_%s", tmpMap->value); |
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[507] | 313 | } |
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[554] | 314 | else { |
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[680] | 315 | strncpy(key, "-1", length); |
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[554] | 316 | } |
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| 317 | return strlen(key); |
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[579] | 318 | } |
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| 319 | |
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| 320 | |
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[507] | 321 | semid getShmLockId(maps* conf, int nsems){ |
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[680] | 322 | semid sem_id; |
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| 323 | char key[MAX_PATH]; |
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| 324 | getKeyValue(conf, key, MAX_PATH); |
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| 325 | |
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| 326 | sem_id = CreateSemaphore( NULL, nsems, nsems+1, key); |
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| 327 | if(sem_id==NULL){ |
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[507] | 328 | #ifdef DEBUG |
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[680] | 329 | fprintf(stderr,"Semaphore failed to create: %s\n", getLastErrorMessage()); |
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[507] | 330 | #endif |
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[680] | 331 | return NULL; |
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| 332 | } |
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[507] | 333 | #ifdef DEBUG |
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[680] | 334 | fprintf(stderr,"%s Accessed !\n",key); |
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[507] | 335 | #endif |
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[680] | 336 | return sem_id; |
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[507] | 337 | } |
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| 338 | |
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| 339 | int removeShmLock(maps* conf, int nsems){ |
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| 340 | semid sem_id=getShmLockId(conf,1); |
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| 341 | if (CloseHandle(sem_id) == 0) { |
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[652] | 342 | #ifdef DEBUG |
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[578] | 343 | fprintf(stderr,"Unable to remove semaphore: %s\n", getLastErrorMessage()); |
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[652] | 344 | #endif |
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[507] | 345 | return -1; |
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| 346 | } |
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| 347 | #ifdef DEBUG |
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| 348 | fprintf(stderr,"%d Removed !\n",sem_id); |
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| 349 | #endif |
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| 350 | return 0; |
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| 351 | } |
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| 352 | |
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| 353 | int lockShm(semid id){ |
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| 354 | DWORD dwWaitResult=WaitForSingleObject(id,INFINITE); |
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| 355 | switch (dwWaitResult){ |
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| 356 | case WAIT_OBJECT_0: |
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| 357 | return 0; |
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| 358 | break; |
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| 359 | case WAIT_TIMEOUT: |
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| 360 | return -1; |
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| 361 | break; |
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| 362 | default: |
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| 363 | return -2; |
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| 364 | break; |
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| 365 | } |
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| 366 | return 0; |
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| 367 | } |
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| 368 | |
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| 369 | int unlockShm(semid id){ |
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| 370 | if(!ReleaseSemaphore(id,1,NULL)){ |
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| 371 | return -1; |
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| 372 | } |
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| 373 | return 0; |
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| 374 | } |
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| 375 | |
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[216] | 376 | static LPVOID lpvMemG = NULL; // pointer to shared memory |
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| 377 | static HANDLE hMapObjectG = NULL; // handle to file mapping |
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| 378 | |
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| 379 | |
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| 380 | char* getStatus(int pid){ |
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[467] | 381 | char *lpszBuf=(char*) malloc(SHMEMSIZE*sizeof(char)); |
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[452] | 382 | int i=0; |
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[216] | 383 | LPWSTR lpszTmp=NULL; |
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| 384 | LPVOID lpvMem = NULL; |
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| 385 | HANDLE hMapObject = NULL; |
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| 386 | BOOL fIgnore,fInit; |
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[507] | 387 | char tmp[1024]; |
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| 388 | sprintf(tmp,"%d",pid); |
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[216] | 389 | if(hMapObject==NULL) |
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| 390 | hMapObject = CreateFileMapping( |
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| 391 | INVALID_HANDLE_VALUE, // use paging file |
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| 392 | NULL, // default security attributes |
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| 393 | PAGE_READWRITE, // read/write access |
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| 394 | 0, // size: high 32-bits |
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| 395 | 4096, // size: low 32-bits |
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| 396 | TEXT(tmp)); // name of map object |
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[507] | 397 | if (hMapObject == NULL){ |
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| 398 | #ifdef DEBUG |
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| 399 | fprintf(stderr,"ERROR on line %d\n",__LINE__); |
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| 400 | #endif |
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| 401 | return "-1"; |
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| 402 | } |
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[216] | 403 | if((GetLastError() != ERROR_ALREADY_EXISTS)){ |
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[507] | 404 | #ifdef DEBUG |
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| 405 | fprintf(stderr,"ERROR on line %d\n",__LINE__); |
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[578] | 406 | fprintf(stderr,"READING STRING S %s\n", getLastErrorMessage()); |
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[507] | 407 | #endif |
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[216] | 408 | fIgnore = UnmapViewOfFile(lpvMem); |
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| 409 | fIgnore = CloseHandle(hMapObject); |
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| 410 | return "-1"; |
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| 411 | } |
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| 412 | fInit=TRUE; |
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| 413 | if(lpvMem==NULL) |
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| 414 | lpvMem = MapViewOfFile( |
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| 415 | hMapObject, // object to map view of |
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| 416 | FILE_MAP_READ, // read/write access |
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| 417 | 0, // high offset: map from |
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| 418 | 0, // low offset: beginning |
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| 419 | 0); // default: map entire file |
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[507] | 420 | if (lpvMem == NULL){ |
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| 421 | #ifdef DEBUG |
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| 422 | fprintf(stderr,"READING STRING S %d\n",__LINE__); |
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[578] | 423 | fprintf(stderr,"READING STRING S %s\n", getLastErrorMessage()); |
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[507] | 424 | #endif |
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[216] | 425 | return "-1"; |
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[507] | 426 | } |
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[216] | 427 | lpszTmp = (LPWSTR) lpvMem; |
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[452] | 428 | while (*lpszTmp){ |
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| 429 | lpszBuf[i] = (char)*lpszTmp; |
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| 430 | *lpszTmp++; |
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| 431 | lpszBuf[i+1] = '\0'; |
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| 432 | i++; |
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| 433 | } |
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| 434 | return (char*)lpszBuf; |
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[216] | 435 | } |
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| 436 | |
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| 437 | #else |
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[579] | 438 | /** |
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| 439 | * Number of time to try to access a semaphores set |
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| 440 | * @see getShmLockId |
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| 441 | */ |
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[507] | 442 | #define MAX_RETRIES 10 |
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| 443 | |
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[509] | 444 | #ifndef __APPLE__ |
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[630] | 445 | /** |
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| 446 | * arg for semctl system calls. |
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| 447 | */ |
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[509] | 448 | union semun { |
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[630] | 449 | int val; //!< value for SETVAL |
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| 450 | struct semid_ds *buf; //!< buffer for IPC_STAT & IPC_SET |
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| 451 | ushort *array; //!< array for GETALL & SETALL |
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[509] | 452 | }; |
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| 453 | #endif |
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| 454 | |
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[579] | 455 | /** |
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[652] | 456 | * Set in the pre-allocated key the zoo_sem_[OSID] string |
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| 457 | * where [OSID] is the lid (if any) or osid value from the [lenv] section. |
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[579] | 458 | * |
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| 459 | * @param conf the map containing the setting of the main.cfg file |
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| 460 | */ |
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[507] | 461 | int getKeyValue(maps* conf){ |
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[514] | 462 | if(conf==NULL) |
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| 463 | return 700666; |
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[507] | 464 | map *tmpMap=getMapFromMaps(conf,"lenv","lid"); |
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| 465 | if(tmpMap==NULL) |
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[652] | 466 | tmpMap=getMapFromMaps(conf,"lenv","osid"); |
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[507] | 467 | int key=-1; |
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| 468 | if(tmpMap!=NULL) |
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| 469 | key=atoi(tmpMap->value); |
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| 470 | return key; |
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| 471 | } |
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| 472 | |
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[579] | 473 | /** |
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| 474 | * Try to create or access a semaphore set. |
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| 475 | * |
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| 476 | * @see getKeyValue |
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| 477 | * @param conf the map containing the setting of the main.cfg file |
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| 478 | * @param nsems number of semaphores |
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| 479 | * @return a semaphores set indentifier on success, -1 in other case |
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| 480 | */ |
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[507] | 481 | int getShmLockId(maps* conf, int nsems){ |
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| 482 | int i; |
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| 483 | union semun arg; |
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| 484 | struct semid_ds buf; |
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| 485 | struct sembuf sb; |
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| 486 | semid sem_id; |
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| 487 | int key=getKeyValue(conf); |
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| 488 | |
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| 489 | sem_id = semget(key, nsems, IPC_CREAT | IPC_EXCL | 0666); |
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| 490 | |
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| 491 | if (sem_id >= 0) { /* we got it first */ |
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| 492 | sb.sem_op = 1; |
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| 493 | sb.sem_flg = 0; |
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| 494 | arg.val=1; |
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| 495 | for(sb.sem_num = 0; sb.sem_num < nsems; sb.sem_num++) { |
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| 496 | /* do a semop() to "free" the semaphores. */ |
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| 497 | /* this sets the sem_otime field, as needed below. */ |
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| 498 | if (semop(sem_id, &sb, 1) == -1) { |
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| 499 | int e = errno; |
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| 500 | semctl(sem_id, 0, IPC_RMID); /* clean up */ |
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| 501 | errno = e; |
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| 502 | return -1; /* error, check errno */ |
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| 503 | } |
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| 504 | } |
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| 505 | } else if (errno == EEXIST) { /* someone else got it first */ |
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| 506 | int ready = 0; |
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| 507 | |
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| 508 | sem_id = semget(key, nsems, 0); /* get the id */ |
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| 509 | if (sem_id < 0) return sem_id; /* error, check errno */ |
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| 510 | |
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| 511 | /* wait for other process to initialize the semaphore: */ |
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| 512 | arg.buf = &buf; |
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| 513 | for(i = 0; i < MAX_RETRIES && !ready; i++) { |
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| 514 | semctl(sem_id, nsems-1, IPC_STAT, arg); |
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| 515 | if (arg.buf->sem_otime != 0) { |
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| 516 | #ifdef DEBUG |
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| 517 | fprintf(stderr,"Semaphore acquired ...\n"); |
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| 518 | #endif |
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| 519 | ready = 1; |
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| 520 | } else { |
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| 521 | #ifdef DEBUG |
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| 522 | fprintf(stderr,"Retry to access the semaphore later ...\n"); |
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| 523 | #endif |
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[652] | 524 | zSleep(1); |
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[507] | 525 | } |
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| 526 | } |
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[576] | 527 | errno = ZOO_LOCK_ACQUIRE_FAILED; |
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[507] | 528 | if (!ready) { |
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| 529 | #ifdef DEBUG |
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| 530 | fprintf(stderr,"Unable to access the semaphore ...\n"); |
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| 531 | #endif |
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| 532 | errno = ETIME; |
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| 533 | return -1; |
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| 534 | } |
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| 535 | } else { |
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| 536 | return sem_id; /* error, check errno */ |
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| 537 | } |
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| 538 | #ifdef DEBUG |
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| 539 | fprintf(stderr,"%d Created !\n",sem_id); |
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| 540 | #endif |
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| 541 | return sem_id; |
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| 542 | } |
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| 543 | |
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[579] | 544 | /** |
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| 545 | * Try to remove a semaphore set. |
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| 546 | * |
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| 547 | * @param conf the map containing the setting of the main.cfg file |
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| 548 | * @param nsems number of semaphores |
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| 549 | * @return 0 if the semaphore can be removed, -1 in other case. |
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| 550 | */ |
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[507] | 551 | int removeShmLock(maps* conf, int nsems){ |
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| 552 | union semun arg; |
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| 553 | int sem_id=getShmLockId(conf,nsems); |
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| 554 | if (semctl(sem_id, 0, IPC_RMID, arg) == -1) { |
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[652] | 555 | #ifdef DEBUG |
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| 556 | perror("semctl remove"); |
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| 557 | #endif |
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[507] | 558 | return -1; |
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| 559 | } |
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[652] | 560 | #ifdef DEBUG |
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| 561 | fprintf(stderr,"Semaphore removed!\n"); |
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| 562 | #endif |
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[507] | 563 | return 0; |
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| 564 | } |
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| 565 | |
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[579] | 566 | /** |
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| 567 | * Lock a semaphore set. |
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| 568 | * |
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| 569 | * @param id the semaphores set indetifier |
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| 570 | * @return 0 if the semaphore can be locked, -1 in other case. |
---|
| 571 | */ |
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[507] | 572 | int lockShm(int id){ |
---|
| 573 | struct sembuf sb; |
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| 574 | sb.sem_num = 0; |
---|
| 575 | sb.sem_op = -1; /* set to allocate resource */ |
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| 576 | sb.sem_flg = SEM_UNDO; |
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| 577 | if (semop(id, &sb, 1) == -1){ |
---|
[652] | 578 | #ifdef DEBUG |
---|
| 579 | perror("semop lock"); |
---|
| 580 | #endif |
---|
[507] | 581 | return -1; |
---|
| 582 | } |
---|
| 583 | return 0; |
---|
| 584 | } |
---|
| 585 | |
---|
[579] | 586 | /** |
---|
| 587 | * unLock a semaphore set. |
---|
| 588 | * |
---|
| 589 | * @param id the semaphores set indetifier |
---|
| 590 | * @return 0 if the semaphore can be locked, -1 in other case. |
---|
| 591 | */ |
---|
[507] | 592 | int unlockShm(int id){ |
---|
| 593 | struct sembuf sb; |
---|
| 594 | sb.sem_num = 0; |
---|
| 595 | sb.sem_op = 1; /* free resource */ |
---|
| 596 | sb.sem_flg = SEM_UNDO; |
---|
| 597 | if (semop(id, &sb, 1) == -1) { |
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[26] | 598 | #ifdef DEBUG |
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[652] | 599 | perror("semop unlock"); |
---|
[26] | 600 | #endif |
---|
[652] | 601 | return -1; |
---|
[26] | 602 | } |
---|
[471] | 603 | return 0; |
---|
[26] | 604 | } |
---|
| 605 | |
---|
[579] | 606 | /** |
---|
[652] | 607 | * Get the current status of the running service. |
---|
[579] | 608 | * |
---|
| 609 | * @see getKeyValue, getShmLockId, lockShm |
---|
| 610 | * @param pid the semaphores |
---|
| 611 | * @return 0 on success, -2 if shmget failed, -1 if shmat failed |
---|
| 612 | */ |
---|
[26] | 613 | char* getStatus(int pid){ |
---|
[490] | 614 | int shmid; |
---|
[26] | 615 | key_t key; |
---|
| 616 | void *shm; |
---|
| 617 | key=pid; |
---|
| 618 | if ((shmid = shmget(key, SHMSZ, 0666)) < 0) { |
---|
| 619 | #ifdef DEBUG |
---|
| 620 | fprintf(stderr,"shmget failed in getStatus\n"); |
---|
| 621 | #endif |
---|
| 622 | }else{ |
---|
| 623 | if ((shm = shmat(shmid, NULL, 0)) == (char *) -1) { |
---|
| 624 | #ifdef DEBUG |
---|
| 625 | fprintf(stderr,"shmat failed in getStatus\n"); |
---|
| 626 | #endif |
---|
| 627 | }else{ |
---|
[514] | 628 | char *ret=strdup((char*)shm); |
---|
| 629 | shmdt((void *)shm); |
---|
| 630 | return ret; |
---|
[26] | 631 | } |
---|
| 632 | } |
---|
[490] | 633 | return (char*)"-1"; |
---|
[26] | 634 | } |
---|
| 635 | |
---|
[216] | 636 | #endif |
---|
[26] | 637 | |
---|
[579] | 638 | /** |
---|
| 639 | * Update the status of an ongoing service |
---|
| 640 | * |
---|
| 641 | * @param conf the maps containing the settings of the main.cfg file |
---|
| 642 | * @param percentCompleted percentage of completude of execution of the service |
---|
| 643 | * @param message information about the current step executed |
---|
| 644 | * @return the value of _updateStatus |
---|
| 645 | * @see _updateStatus |
---|
| 646 | */ |
---|
[471] | 647 | int updateStatus( maps* conf, const int percentCompleted, const char* message ){ |
---|
| 648 | char tmp[4]; |
---|
| 649 | snprintf(tmp,4,"%d",percentCompleted); |
---|
| 650 | setMapInMaps( conf, "lenv", "status", tmp ); |
---|
| 651 | setMapInMaps( conf, "lenv", "message", message); |
---|
| 652 | return _updateStatus( conf ); |
---|
| 653 | } |
---|
| 654 | |
---|
[579] | 655 | /** |
---|
| 656 | * Access an input value |
---|
| 657 | * |
---|
| 658 | * @param inputs the maps to search for the input value |
---|
| 659 | * @param parameterName the input name to fetch the value |
---|
| 660 | * @param numberOfBytes the resulting size of the value to add (for binary |
---|
| 661 | * values), -1 for basic char* data |
---|
| 662 | * @return a pointer to the input value if found, NULL in other case. |
---|
| 663 | */ |
---|
[471] | 664 | char* getInputValue( maps* inputs, const char* parameterName, size_t* numberOfBytes){ |
---|
| 665 | map* res=getMapFromMaps(inputs,parameterName,"value"); |
---|
| 666 | if(res!=NULL){ |
---|
| 667 | map* size=getMapFromMaps(inputs,parameterName,"size"); |
---|
| 668 | if(size!=NULL){ |
---|
| 669 | *numberOfBytes=(size_t)atoi(size->value); |
---|
| 670 | return res->value; |
---|
| 671 | }else{ |
---|
| 672 | *numberOfBytes=strlen(res->value); |
---|
| 673 | return res->value; |
---|
| 674 | } |
---|
| 675 | } |
---|
| 676 | return NULL; |
---|
| 677 | } |
---|
| 678 | |
---|
[579] | 679 | /** |
---|
[649] | 680 | * Read a file using the GDAL VSI API |
---|
| 681 | * |
---|
| 682 | * @param conf the maps containing the settings of the main.cfg file |
---|
| 683 | * @param dataSource the datasource name to read |
---|
| 684 | * @warning make sure to free ressources returned by this function |
---|
| 685 | */ |
---|
| 686 | char *readVSIFile(maps* conf,const char* dataSource){ |
---|
| 687 | VSILFILE * fichier=VSIFOpenL(dataSource,"rb"); |
---|
[651] | 688 | VSIStatBuf file_status; |
---|
[681] | 689 | VSIStatL(dataSource, &file_status); |
---|
[649] | 690 | if(fichier==NULL){ |
---|
| 691 | char tmp[1024]; |
---|
| 692 | sprintf(tmp,"Failed to open file %s for reading purpose. File seems empty %lld.", |
---|
| 693 | dataSource,file_status.st_size); |
---|
| 694 | setMapInMaps(conf,"lenv","message",tmp); |
---|
| 695 | return NULL; |
---|
| 696 | } |
---|
| 697 | char *res1=(char *)malloc(file_status.st_size*sizeof(char)); |
---|
| 698 | VSIFReadL(res1,1,file_status.st_size*sizeof(char),fichier); |
---|
| 699 | res1[file_status.st_size-1]=0; |
---|
| 700 | VSIFCloseL(fichier); |
---|
| 701 | VSIUnlink(dataSource); |
---|
| 702 | return res1; |
---|
| 703 | } |
---|
| 704 | |
---|
| 705 | /** |
---|
[579] | 706 | * Set an output value |
---|
| 707 | * |
---|
| 708 | * @param outputs the maps to define the output value |
---|
| 709 | * @param parameterName the output name to set the value |
---|
| 710 | * @param data the value to set |
---|
| 711 | * @param numberOfBytes size of the value to add (for binary values), -1 for |
---|
| 712 | * basic char* data |
---|
| 713 | * @return 0 |
---|
| 714 | */ |
---|
[471] | 715 | int setOutputValue( maps* outputs, const char* parameterName, char* data, size_t numberOfBytes ){ |
---|
| 716 | if(numberOfBytes==-1){ |
---|
| 717 | setMapInMaps(outputs,parameterName,"value",data); |
---|
| 718 | }else{ |
---|
| 719 | char size[1024]; |
---|
| 720 | map* tmp=getMapFromMaps(outputs,parameterName,"value"); |
---|
[539] | 721 | if(tmp==NULL){ |
---|
| 722 | setMapInMaps(outputs,parameterName,"value",""); |
---|
| 723 | tmp=getMapFromMaps(outputs,parameterName,"value"); |
---|
| 724 | } |
---|
[471] | 725 | free(tmp->value); |
---|
| 726 | tmp->value=(char*) malloc((numberOfBytes+1)*sizeof(char)); |
---|
| 727 | memcpy(tmp->value,data,numberOfBytes); |
---|
[490] | 728 | sprintf(size,"%lu",numberOfBytes); |
---|
[471] | 729 | setMapInMaps(outputs,parameterName,"size",size); |
---|
| 730 | } |
---|
| 731 | return 0; |
---|
| 732 | } |
---|
[576] | 733 | |
---|