Mercurial > noffle

annotate src/content.c @ 188:f1bacee93ca6 noffle

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[svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c: robustness - instead of retruning simple Passed/Failed statuses from connection functions, return an integer status instead. This allows Noffle to distinguish between a connection failure, an unrecoverable protocol error and a recoverable problem. As a concrete instance, Noffle will no longer abort the connection if a group is removed from the upstream server. Also beef up error detection a bit. * src/content.c: instead of overwriting the existing content file(s) when updating - which leaves a window where Noffle is vulnerable to failure which will leave the content file corrupted (yes, it happened to me), write a new content file and rename it over the old file only when it has been written and closed with no errors reported.
author bears
date Wed, 12 Sep 2001 21:33:44 +0100
parents fed1334d766b
children 60a70c16d79c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
43
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1 /*
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2 content.c
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3
188
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4 $Id: content.c 307 2001-09-12 20:33:44Z bears $
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5 */
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6
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7 #if HAVE_CONFIG_H
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8 #include <config.h>
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9 #endif
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10
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11 #include <stdio.h>
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12 #include <dirent.h>
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13 #include <errno.h>
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14 #include <fcntl.h>
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15 #include <sys/types.h>
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16 #include <sys/stat.h>
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17 #include <unistd.h>
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18 #include "common.h"
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19 #include "configfile.h"
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20 #include "group.h"
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21 #include "log.h"
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22 #include "over.h"
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23 #include "pseudo.h"
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24 #include "util.h"
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25 #include "content.h"
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26 #include "portable.h"
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27
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28 struct
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29 {
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30 DIR *dir; /* Directory for browsing through all
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31 groups */
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32 int vecFirst; /* First article number in vector */
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33 int first; /* First live article number */
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34 int last; /* Last article number */
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35 int size; /* Number of overviews. */
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36 int max; /* Size of elem. */
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37 Over **elem; /* Ptr to array with ptrs to overviews.
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38 NULL entries for non-existing article numbers
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39 in group. */
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40 Str name;
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41 Str file;
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42 Bool dirty; /* Needs writing? */
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43 } cont = { NULL, 1, 1, 0, 0, 0, NULL, "", "", FALSE };
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44
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45 void
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46 Cont_app( Over *ov )
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47 {
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48 if ( cont.max < cont.size + 1 )
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49 {
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50 if ( ! ( cont.elem = realloc( cont.elem,
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51 ( cont.max + 500 )
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52 * sizeof( cont.elem[ 0 ] ) ) ) )
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53 {
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54 Log_err( "Could not realloc overview list" );
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55 exit( EXIT_FAILURE );
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56 }
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57 cont.max += 500;
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58 }
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59 ASSERT( cont.vecFirst > 0 );
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60 if ( ov )
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61 Ov_setNumb( ov, cont.vecFirst + cont.size );
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62 cont.elem[ cont.size++ ] = ov;
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63 cont.last = cont.vecFirst + cont.size - 1;
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64 cont.dirty = TRUE;
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65 }
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66
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67 Bool
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68 Cont_validNumb( int n )
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69 {
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70 return ( n != 0 && n >= cont.first && n <= cont.last
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71 && cont.elem[ n - cont.vecFirst ] );
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72 }
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73
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74 void
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75 Cont_delete( int n )
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76 {
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77 Over **ov;
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78
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79 if ( ! Cont_validNumb( n ) )
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80 return;
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81 ov = &cont.elem[ n - cont.vecFirst ];
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82 free( *ov );
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83 *ov = NULL;
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84 cont.dirty = TRUE;
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85 }
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86
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87 /* Remove all overviews from content. */
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88 static void
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89 clearCont( void )
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90 {
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91 int i;
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92
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93 for ( i = 0; i < cont.size; ++i )
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94 del_Over( cont.elem[ i ] );
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95 cont.size = 0;
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96 }
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97
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98 static void
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99 setupEmpty( const char *name )
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100 {
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101 cont.last = Grp_last( name );
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102 cont.first = cont.vecFirst = cont.last + 1;
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103 ASSERT( cont.first > 0 );
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104 }
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105
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106 /* Extend content list to size "cnt" and append NULL entries. */
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107 static void
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108 extendCont( int cnt )
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109 {
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110 int i, n;
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111
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112 if ( cont.size < cnt )
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113 {
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114 n = cnt - cont.size;
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115 for ( i = 0; i < n; ++i )
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116 Cont_app( NULL );
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117 }
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118 }
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119
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120 /* Discard all cached overviews, and read in the overviews of a new group
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121 from its overviews file. */
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122 void
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uh1763
parents:
diff changeset
123 Cont_read( const char *name )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
124 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
125 FILE *f;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
126 Over *ov;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
127 int numb;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
128 Str line;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
129
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
130 /* Delete old overviews and make room for new ones. */
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
131 cont.vecFirst = 0;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
132 cont.first = 0;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
133 cont.last = 0;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
134 Utl_cpyStr( cont.name, name );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
135 clearCont();
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
136
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
137 /* read overviews from overview file and store them in the overviews
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
138 list */
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
139 snprintf( cont.file, MAXCHAR, "%s/overview/%s", Cfg_spoolDir(), name );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
140 f = fopen( cont.file, "r" );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
141 if ( ! f )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
142 {
185
fed1334d766b [svn] * src/client.c: Change variable only used on constant to 'const'.
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diff changeset
143 Log_dbg( LOG_DBG_NEWSBASE, "No group overview file: %s", cont.file );
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
144 setupEmpty( name );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
145 return;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
146 }
185
fed1334d766b [svn] * src/client.c: Change variable only used on constant to 'const'.
bears
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diff changeset
147 Log_dbg( LOG_DBG_NEWSBASE, "Reading %s", cont.file );
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
148 while ( fgets( line, MAXCHAR, f ) )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
149 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
150 if ( ! ( ov = Ov_read( line ) ) )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
151 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
152 Log_err( "Overview corrupted in %s: %s", name, line );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
153 continue;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
154 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
155 numb = Ov_numb( ov );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
156 if ( numb < cont.first )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
157 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
158 Log_err( "Wrong ordering in %s: %s", name, line );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
159 continue;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
160 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
161 if ( cont.first == 0 )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
162 cont.first = cont.vecFirst = numb;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
163 cont.last = numb;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
164 extendCont( numb - cont.first + 1 );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
165 cont.elem[ numb - cont.first ] = ov;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
166 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
167 fclose( f );
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
168
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
169 if ( cont.first == 0 )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
170 setupEmpty( name ); /* Corrupt overview file recovery */
96
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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parents: 75
diff changeset
171 else
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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diff changeset
172 {
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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diff changeset
173 int grpLast;
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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diff changeset
174
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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diff changeset
175 /*
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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diff changeset
176 Check for end article(s) being cancelled. Need to ensure we
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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parents: 75
diff changeset
177 don't re-use and article number.
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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parents: 75
diff changeset
178 */
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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diff changeset
179 grpLast = Grp_last( name );
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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diff changeset
180 if ( cont.last < grpLast )
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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parents: 75
diff changeset
181 extendCont( grpLast - cont.first + 1 );
988cacc01470 [svn] Preserve group last number if last article(s) cancelled
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parents: 75
diff changeset
182 }
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
183 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
184
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
185 void
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
186 Cont_write( void )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
187 {
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
188 Bool anythingWritten;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
189 int i;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
190 FILE *f;
75
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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diff changeset
191 const Over *ov, *ov_next;
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
192 Str tmpfname;
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
193 Bool writeErr;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
194
167
7ba337dafb2c [svn] * TODO,content.c,lock.c,server.c,server.h: Remove bug notice re:
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diff changeset
195 /* If nowt has changed, do nowt. */
7ba337dafb2c [svn] * TODO,content.c,lock.c,server.c,server.h: Remove bug notice re:
bears
parents: 96
diff changeset
196 if ( ! cont.dirty )
7ba337dafb2c [svn] * TODO,content.c,lock.c,server.c,server.h: Remove bug notice re:
bears
parents: 96
diff changeset
197 return;
7ba337dafb2c [svn] * TODO,content.c,lock.c,server.c,server.h: Remove bug notice re:
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parents: 96
diff changeset
198
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
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diff changeset
199 /* Save the overview to temporary file in same dir. */
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
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parents: 185
diff changeset
200 snprintf( tmpfname, MAXCHAR, "%s/overview/%s.%d",
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
201 Cfg_spoolDir(), cont.name, (int) getpid() );
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
202 if ( ! ( f = fopen( tmpfname, "w" ) ) )
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
203 {
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
204 Log_err( "Could not open %s for writing", tmpfname );
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
205 return;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
206 }
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
207 Log_dbg( LOG_DBG_NEWSBASE, "Writing %s (%lu)", tmpfname, cont.size );
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
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diff changeset
208 anythingWritten = FALSE;
49
5ecb646acf97 [svn] Article numbering bug fixes
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parents: 45
diff changeset
209 cont.first = -1;
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
210 writeErr = FALSE;
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
211
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
212 for ( i = 0; i < cont.size; ++i )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
213 {
75
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
214 ov = cont.elem[ i ];
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
215 if ( ov )
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
216 {
75
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
217 if ( i + 1 < cont.size )
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
218 ov_next = cont.elem[ i + 1 ];
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
219 else
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
220 ov_next = NULL;
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
221
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
222 /*
22b3e3dfc8c2 [svn] Preserve gen info sometimes
bears
parents: 59
diff changeset
223 Preserve gen info if it is followed immediately by an
22b3e3dfc8c2 [svn] Preserve gen info sometimes
bears
parents: 59
diff changeset
224 article with the next number. In practice, this means
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
225 that when in auto-subscribed mode, the gen info will
22b3e3dfc8c2 [svn] Preserve gen info sometimes
bears
parents: 59
diff changeset
226 remain until the 'group now subscribed' message is
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
227 expired.
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
228 */
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
229 if ( ! Pseudo_isGeneralInfo( Ov_msgId( ov ) )
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
230 || ( ov_next != NULL &&
22b3e3dfc8c2 [svn] Preserve gen info sometimes
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parents: 59
diff changeset
231 Ov_numb( ov_next ) - Ov_numb( ov ) == 1 ) )
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
232 {
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
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diff changeset
233 anythingWritten = TRUE;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
234 if ( ! Ov_write( ov, f ) )
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
235 {
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
236 Log_err( "Writing of overview line to %s failed: %s",
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
237 tmpfname, strerror( errno ) );
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
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diff changeset
238 writeErr = TRUE;
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
239 break;
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
240 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
241 else
49
5ecb646acf97 [svn] Article numbering bug fixes
bears
parents: 45
diff changeset
242 {
5ecb646acf97 [svn] Article numbering bug fixes
bears
parents: 45
diff changeset
243 if ( cont.first < 0 )
5ecb646acf97 [svn] Article numbering bug fixes
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parents: 45
diff changeset
244 cont.first = cont.vecFirst + i;
5ecb646acf97 [svn] Article numbering bug fixes
bears
parents: 45
diff changeset
245 }
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
246 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
uh1763
parents:
diff changeset
247 }
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
248 }
188
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
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diff changeset
249 if ( fclose( f ) != 0 )
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
250 {
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
251 Log_err( "Close of content file %s failed: %s",
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
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diff changeset
252 tmpfname, strerror( errno ) );
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
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diff changeset
253 writeErr = TRUE;
f1bacee93ca6 [svn] * src/client.c,src/client.h,src/fetch.c,src/noffle.c,src/server.c:
bears
parents: 185
diff changeset
254 }
43
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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diff changeset
255
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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parents:
diff changeset
256 /*
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257 If empty, remove the overview file and set set first to one
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258 beyond last to flag said emptiness.
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259 */
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260 if ( ! anythingWritten )
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261 {
188
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262 if ( unlink( cont.file ) < 0 )
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263 Log_err( "Unlink of %s failed: %s", cont.file, strerror( errno ) );
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264 else
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265 {
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266 cont.dirty = FALSE;
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267 cont.first = cont.last + 1;
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268 }
43
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269 }
188
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270 else if ( ! writeErr )
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271 {
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272 if ( rename( tmpfname, cont.file ) < 0 )
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273 Log_err( "Rename of content file %s to %s failed: %s",
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274 tmpfname, cont.file, strerror( errno ) );
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275 else
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276 cont.dirty = FALSE;
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277 }
43
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278 }
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279
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280 const Over *
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281 Cont_get( int numb )
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282 {
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283 if ( ! Cont_validNumb( numb ) )
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284 return NULL;
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285 return cont.elem[ numb - cont.vecFirst ];
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286 }
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287
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288 int
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289 Cont_first( void ) { return cont.first; }
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290
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291 int
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292 Cont_last( void ) { return cont.last; }
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293
49
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294 int
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295 Cont_find( const char *msgId )
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296 {
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297 int i;
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298 const Over *ov;
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299
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300 for ( i = 0; i < cont.size; i++ )
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301 {
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302 if ( ( ov = cont.elem[ i ] )
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303 && strcmp( Ov_msgId( ov ), msgId ) == 0 )
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304 return i + cont.vecFirst;
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305 }
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306
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307 return -1;
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308 }
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309
43
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310 const char *
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311 Cont_grp( void ) { return cont.name; }
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312
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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313 Bool
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314 Cont_nextGrp( Str result )
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315 {
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316 struct dirent *d;
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317
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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318 ASSERT( cont.dir );
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319 if ( ! ( d = readdir( cont.dir ) ) )
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320 {
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321 cont.dir = NULL;
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322 return FALSE;
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323 }
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324 if ( ! d->d_name )
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325 return FALSE;
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326 Utl_cpyStr( result, d->d_name );
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327 result[ MAXCHAR - 1 ] = '\0';
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328 return TRUE;
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329 }
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330
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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331 Bool
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332 Cont_firstGrp( Str result )
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333 {
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334 Str name;
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335
2842f50feb55 [svn] * client.c, client.h, common.h, config.c, config.h, content.c, content.h,
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336 snprintf( name, MAXCHAR, "%s/overview", Cfg_spoolDir() );
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337 if ( ! ( cont.dir = opendir( name ) ) )
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338 {
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339 Log_err( "Cannot open %s", name );
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340 return FALSE;
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341 }
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342 Cont_nextGrp( result ); /* "." */
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343 Cont_nextGrp( result ); /* ".." */
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344 return Cont_nextGrp( result );
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345 }