Mercurial > noffle
annotate src/expire.c @ 443:b415fa4d18ee noffle
[svn] update
author | godisch |
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date | Wed, 25 Jun 2003 16:41:02 +0100 |
parents | 52f467c7213b |
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rev | line source |
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255
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1 /* |
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2 expire.c |
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3 |
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4 $Id: expire.c 387 2002-06-26 13:15:44Z bears $ |
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5 |
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6 Handle expiring articles from the article base. |
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7 */ |
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8 |
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9 #if HAVE_CONFIG_H |
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10 #include <config.h> |
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11 #endif |
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12 |
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13 #include <stdio.h> |
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14 #include <errno.h> |
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15 #include <unistd.h> |
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16 #include <sys/types.h> |
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17 #include <sys/stat.h> |
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18 #include "configfile.h" |
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19 #include "content.h" |
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20 #include "database.h" |
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21 #include "expire.h" |
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22 #include "fetchlist.h" |
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23 #include "group.h" |
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24 #include "itemlist.h" |
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25 #include "log.h" |
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26 #include "protocol.h" |
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27 #include "pseudo.h" |
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28 #include "util.h" |
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29 #include "portable.h" |
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30 |
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31 /* |
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32 * Find the maximum expire time in days for this article. |
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33 * Different groups may have different limits, so we need to |
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34 * check the limit for each group. |
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35 */ |
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36 static int |
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37 calcExpireDays( const char *msgId ) |
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38 { |
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39 const char *xref; |
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40 ItemList *refs; |
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41 const char *ref; |
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42 int res; |
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43 |
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44 xref = Db_xref( msgId ); |
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45 if ( xref[ 0 ] == '\0' ) |
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46 return -1; |
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47 |
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48 res = -1; |
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49 refs = new_Itl( xref, " :" ); |
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50 for ( ref = Itl_first( refs ); ref != NULL; ref = Itl_next( refs ) ) |
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51 { |
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52 int days; |
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53 |
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54 days = Cfg_expire( ref ); |
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55 if ( days == 0 |
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56 || ( days > res && res != 0 ) ) |
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57 res = days; |
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58 |
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59 Itl_next( refs ); /* Throw away group number */ |
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60 } |
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61 del_Itl( refs ); |
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62 |
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63 return res; |
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64 } |
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65 |
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66 /* Does this article need to be expired? */ |
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67 static Bool |
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68 articleExpired( const char *msgId, time_t now ) |
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69 { |
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70 int expDays; |
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71 time_t lastAccess; |
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72 Str expires; |
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73 time_t texpires; |
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74 |
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75 expDays = calcExpireDays( msgId ); |
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76 if ( expDays == -1 ) |
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77 { |
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78 Log_err( "Internal error: Failed expiry calculation on %s", |
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79 msgId ); |
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80 return TRUE; |
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81 } |
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82 |
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83 lastAccess = Db_lastAccess( msgId ); |
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84 if ( lastAccess == -1 ) |
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85 { |
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86 Log_err( "Internal error: Getting lastAccess of %s failed", |
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87 msgId ); |
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88 return TRUE; |
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89 } |
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90 |
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91 if ( Prt_searchHeader( Db_header( msgId ), "Expires", expires ) ) |
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92 texpires = Utl_parseNewsDate( expires ); |
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93 else |
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94 texpires = (time_t) -1; |
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95 |
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96 if ( expDays > 0 && |
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97 difftime( now, lastAccess ) > ( (double) expDays * 24 * 3600 ) ) |
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98 { |
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99 #ifdef DEBUG |
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100 Str lastStr, nowStr; |
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101 |
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102 Utl_cpyStr( lastStr, ctime( &lastAccess ) ); |
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103 lastStr[ strlen( lastStr ) - 1 ] = '\0'; |
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104 Utl_cpyStr( nowStr, ctime( &now ) ); |
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105 nowStr[ strlen( nowStr ) - 1 ] = '\0'; |
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106 Log_dbg( LOG_DBG_EXPIRE, |
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107 "Expiring %s: last access %s, time now %s", |
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108 msgId, lastStr, nowStr ); |
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109 #endif |
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110 } |
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111 else if ( ( texpires != (time_t) -1 ) && now > texpires ) |
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112 { |
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113 Log_dbg( LOG_DBG_EXPIRE, |
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114 "Expiring %s: Expires header activated", msgId ); |
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115 } |
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116 else |
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117 return FALSE; |
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118 |
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119 return TRUE; |
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120 } |
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121 |
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122 /* Work though all overviews looking for articles to expire. */ |
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123 void |
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124 Exp_expire( void ) |
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125 { |
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126 const Over *ov; |
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127 int i; |
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128 int cntDel, cntLeft; |
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129 Str grp; |
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130 Bool autoUnsubscribe; |
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131 int autoUnsubscribeDays; |
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132 time_t now, maxAge = 0; |
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133 const char *msgId; |
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134 |
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135 autoUnsubscribe = Cfg_autoUnsubscribe(); |
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136 autoUnsubscribeDays = Cfg_autoUnsubscribeDays(); |
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137 maxAge = Cfg_autoUnsubscribeDays() * 24 * 3600; |
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138 if ( ! Cont_firstGrp( grp ) ) |
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139 return; |
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140 Log_inf( "Expiring articles" ); |
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141 Fetchlist_read(); |
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142 now = time( NULL ); |
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143 do |
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144 { |
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145 if ( ! Grp_exists( grp ) ) |
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146 Log_err( "Overview file for unknown group %s exists", grp ); |
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147 else |
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148 { |
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149 cntDel = cntLeft = 0; |
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150 Cont_read( grp ); |
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151 for ( i = Cont_first(); i <= Cont_last(); ++i ) |
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152 { |
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153 if ( ! Cont_validNumb( i ) ) |
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154 continue; |
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155 |
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156 if ( ( ov = Cont_get( i ) ) ) |
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157 { |
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158 msgId = Ov_msgId( ov ); |
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159 /* Crossposted articles may have already been deleted. */ |
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160 if ( ! Db_contains( msgId ) ) |
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161 { |
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162 Cont_delete( i ); |
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163 ++cntDel; |
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164 } else if ( articleExpired( msgId, now ) ) |
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165 { |
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166 Cont_delete( i ); |
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167 Db_delete( msgId ); |
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168 ++cntDel; |
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169 } |
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170 else |
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171 ++cntLeft; |
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172 } |
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173 } |
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174 |
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175 /* |
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176 * Auto unsubscribe where applicable if last article arrival |
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177 * time is maxAge newer than the last access time. This ensures |
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178 * the low traffic groups don't get expired simply because |
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179 * there's been nothing to read. |
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180 */ |
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181 if ( ! Grp_local( grp ) |
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182 && Fetchlist_contains( grp, NULL ) |
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183 && autoUnsubscribe |
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184 && difftime( Grp_lastPostTime(grp), |
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185 Grp_lastAccess( grp ) ) > maxAge ) |
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186 { |
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187 Log_ntc( "Auto-unsubscribing from %s after %d " |
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188 "days without access", |
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189 grp, autoUnsubscribeDays ); |
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190 Pseudo_autoUnsubscribed( grp, autoUnsubscribeDays ); |
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191 Fetchlist_remove( grp ); |
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192 Grp_setRmtNext( grp, GRP_RMT_NEXT_NOT_SUBSCRIBED ); |
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193 } |
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194 if ( Cont_write() ) |
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195 Grp_setFirstLast( grp, Cont_first(), Cont_last() ); |
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196 Log_inf( "%ld overviews deleted from group %s, %ld left (%ld-%ld)", |
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197 cntDel, grp, cntLeft, Grp_first( grp ), Grp_last( grp ) ); |
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198 } |
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199 } |
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200 while ( Cont_nextGrp( grp ) ); |
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201 Fetchlist_write(); |
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202 Db_compact(); |
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203 } |