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1 /* ========================================================================
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2 * Copyright 1988-2007 University of Washington
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3 *
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4 * Licensed under the Apache License, Version 2.0 (the "License");
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5 * you may not use this file except in compliance with the License.
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6 * You may obtain a copy of the License at
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7 *
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8 * http://www.apache.org/licenses/LICENSE-2.0
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9 *
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10 *
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11 * ========================================================================
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12 */
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13
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14 /*
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15 * Program: Tenex mail routines
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16 *
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17 * Author: Mark Crispin
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18 * Networks and Distributed Computing
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19 * Computing & Communications
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20 * University of Washington
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21 * Administration Building, AG-44
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22 * Seattle, WA 98195
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23 * Internet: MRC@CAC.Washington.EDU
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24 *
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25 * Date: 22 May 1990
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26 * Last Edited: 18 June 2007
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27 */
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28
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29
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30 /* FILE TIME SEMANTICS
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31 *
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32 * The atime is the last read time of the file.
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33 * The mtime is the last flags update time of the file.
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34 * The ctime is the last write time of the file.
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35 *
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36 * TEXT SIZE SEMANTICS
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37 *
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38 * Most of the text sizes are in internal (LF-only) form, except for the
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39 * msg.text size. Beware.
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40 */
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41
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42 #include <stdio.h>
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43 #include <ctype.h>
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44 #include <errno.h>
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45 extern int errno; /* just in case */
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46 #include "mail.h"
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47 #include "osdep.h"
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48 #include <fcntl.h>
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49 #include <time.h>
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50 #include <sys/stat.h>
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51 #include <sys/utime.h>
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52 #include "misc.h"
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53 #include "dummy.h"
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54
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55 /* TENEX I/O stream local data */
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56
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57 typedef struct tenex_local {
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58 unsigned int shouldcheck: 1; /* if ping should do a check instead */
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59 unsigned int mustcheck: 1; /* if ping must do a check instead */
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60 int fd; /* file descriptor for I/O */
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61 off_t filesize; /* file size parsed */
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62 time_t filetime; /* last file time */
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63 time_t lastsnarf; /* local snarf time */
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64 unsigned char *buf; /* temporary buffer */
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65 unsigned long buflen; /* current size of temporary buffer */
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66 unsigned long uid; /* current text uid */
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67 SIZEDTEXT text; /* current text */
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68 } TENEXLOCAL;
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69
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70
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71 /* Convenient access to local data */
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72
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73 #define LOCAL ((TENEXLOCAL *) stream->local)
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74
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75
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76 /* Function prototypes */
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77
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78 DRIVER *tenex_valid (char *name);
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79 int tenex_isvalid (char *name,char *file);
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80 void *tenex_parameters (long function,void *value);
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81 void tenex_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents);
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82 void tenex_list (MAILSTREAM *stream,char *ref,char *pat);
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83 void tenex_lsub (MAILSTREAM *stream,char *ref,char *pat);
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84 long tenex_create (MAILSTREAM *stream,char *mailbox);
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85 long tenex_delete (MAILSTREAM *stream,char *mailbox);
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86 long tenex_rename (MAILSTREAM *stream,char *old,char *newname);
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87 long tenex_status (MAILSTREAM *stream,char *mbx,long flags);
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88 MAILSTREAM *tenex_open (MAILSTREAM *stream);
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89 void tenex_close (MAILSTREAM *stream,long options);
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90 void tenex_fast (MAILSTREAM *stream,char *sequence,long flags);
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91 void tenex_flags (MAILSTREAM *stream,char *sequence,long flags);
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92 char *tenex_header (MAILSTREAM *stream,unsigned long msgno,
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93 unsigned long *length,long flags);
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94 long tenex_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags);
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95 void tenex_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags);
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96 void tenex_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt);
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97 long tenex_ping (MAILSTREAM *stream);
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98 void tenex_check (MAILSTREAM *stream);
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99 void tenex_snarf (MAILSTREAM *stream);
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100 long tenex_expunge (MAILSTREAM *stream,char *sequence,long options);
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101 long tenex_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options);
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102 long tenex_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data);
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103
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104 unsigned long tenex_size (MAILSTREAM *stream,unsigned long m);
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105 long tenex_parse (MAILSTREAM *stream);
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106 MESSAGECACHE *tenex_elt (MAILSTREAM *stream,unsigned long msgno);
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107 void tenex_read_flags (MAILSTREAM *stream,MESSAGECACHE *elt);
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108 void tenex_update_status (MAILSTREAM *stream,unsigned long msgno,
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109 long syncflag);
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110 unsigned long tenex_hdrpos (MAILSTREAM *stream,unsigned long msgno,
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111 unsigned long *size);
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112
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113
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114 /* Tenex mail routines */
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115
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116
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117 /* Driver dispatch used by MAIL */
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118
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119 DRIVER tenexdriver = {
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120 "tenex", /* driver name */
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121 DR_LOCAL|DR_MAIL, /* driver flags */
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122 (DRIVER *) NIL, /* next driver */
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123 tenex_valid, /* mailbox is valid for us */
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124 tenex_parameters, /* manipulate parameters */
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125 tenex_scan, /* scan mailboxes */
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126 tenex_list, /* list mailboxes */
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127 tenex_lsub, /* list subscribed mailboxes */
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128 NIL, /* subscribe to mailbox */
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129 NIL, /* unsubscribe from mailbox */
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130 tenex_create, /* create mailbox */
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131 tenex_delete, /* delete mailbox */
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132 tenex_rename, /* rename mailbox */
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133 mail_status_default, /* status of mailbox */
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134 tenex_open, /* open mailbox */
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135 tenex_close, /* close mailbox */
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136 tenex_flags, /* fetch message "fast" attributes */
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137 tenex_flags, /* fetch message flags */
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138 NIL, /* fetch overview */
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139 NIL, /* fetch message envelopes */
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140 tenex_header, /* fetch message header */
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141 tenex_text, /* fetch message body */
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142 NIL, /* fetch partial message text */
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143 NIL, /* unique identifier */
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144 NIL, /* message number */
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145 tenex_flag, /* modify flags */
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146 tenex_flagmsg, /* per-message modify flags */
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147 NIL, /* search for message based on criteria */
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148 NIL, /* sort messages */
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149 NIL, /* thread messages */
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150 tenex_ping, /* ping mailbox to see if still alive */
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151 tenex_check, /* check for new messages */
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152 tenex_expunge, /* expunge deleted messages */
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153 tenex_copy, /* copy messages to another mailbox */
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154 tenex_append, /* append string message to mailbox */
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155 NIL /* garbage collect stream */
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156 };
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157
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158 /* prototype stream */
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159 MAILSTREAM tenexproto = {&tenexdriver};
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160
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161 /* Tenex mail validate mailbox
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162 * Accepts: mailbox name
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163 * Returns: our driver if name is valid, NIL otherwise
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164 */
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165
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166 DRIVER *tenex_valid (char *name)
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167 {
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168 char tmp[MAILTMPLEN];
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169 return tenex_isvalid (name,tmp) ? &tenexdriver : NIL;
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170 }
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171
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172
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173 /* Tenex mail test for valid mailbox
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174 * Accepts: mailbox name
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175 * buffer to return file name
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176 * Returns: T if valid, NIL otherwise
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177 */
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178
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179 int tenex_isvalid (char *name,char *file)
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180 {
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181 int fd;
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182 int ret = NIL;
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183 char *s,tmp[MAILTMPLEN];
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184 struct stat sbuf;
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185 struct utimbuf times;
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186 errno = EINVAL; /* assume invalid argument */
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187 /* if file, get its status */
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188 if ((s = dummy_file (file,name)) && !stat (s,&sbuf) &&
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189 ((sbuf.st_mode & S_IFMT) == S_IFREG)) {
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190 if (!sbuf.st_size)errno = 0;/* empty file */
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191 else if ((fd = open (file,O_BINARY|O_RDONLY,NIL)) >= 0) {
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192 memset (tmp,'\0',MAILTMPLEN);
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193 if ((read (fd,tmp,64) >= 0) && (s = strchr (tmp,'\012')) &&
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194 (s[-1] != '\015')) { /* valid format? */
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195 *s = '\0'; /* tie off header */
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196 /* must begin with dd-mmm-yy" */
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197 ret = (((tmp[2] == '-' && tmp[6] == '-') ||
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198 (tmp[1] == '-' && tmp[5] == '-')) &&
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199 (s = strchr (tmp+18,',')) && strchr (s+2,';')) ? T : NIL;
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200 }
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201 else errno = -1; /* bogus format */
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202 close (fd); /* close the file */
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203 /* \Marked status? */
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204 if (sbuf.st_ctime > sbuf.st_atime) {
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205 /* preserve atime and mtime */
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206 times.actime = sbuf.st_atime;
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207 times.modtime = sbuf.st_mtime;
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208 utime (file,×); /* set the times */
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209 }
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210 }
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211 }
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212 /* in case INBOX but not tenex format */
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213 else if ((errno == ENOENT) && !compare_cstring (name,"INBOX")) errno = -1;
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214 return ret; /* return what we should */
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215 }
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216
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217
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218 /* Tenex manipulate driver parameters
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219 * Accepts: function code
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220 * function-dependent value
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221 * Returns: function-dependent return value
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222 */
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223
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224 void *tenex_parameters (long function,void *value)
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225 {
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226 return NIL;
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227 }
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228
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229 /* Tenex mail scan mailboxes
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230 * Accepts: mail stream
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231 * reference
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232 * pattern to search
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233 * string to scan
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234 */
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235
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236 void tenex_scan (MAILSTREAM *stream,char *ref,char *pat,char *contents)
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237 {
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238 if (stream) dummy_scan (NIL,ref,pat,contents);
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239 }
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240
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241
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242 /* Tenex mail list mailboxes
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243 * Accepts: mail stream
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244 * reference
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245 * pattern to search
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246 */
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247
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248 void tenex_list (MAILSTREAM *stream,char *ref,char *pat)
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249 {
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250 if (stream) dummy_list (NIL,ref,pat);
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251 }
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252
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253
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254 /* Tenex mail list subscribed mailboxes
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255 * Accepts: mail stream
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256 * reference
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257 * pattern to search
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258 */
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259
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260 void tenex_lsub (MAILSTREAM *stream,char *ref,char *pat)
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261 {
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262 if (stream) dummy_lsub (NIL,ref,pat);
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263 }
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264
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265 /* Tenex mail create mailbox
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266 * Accepts: MAIL stream
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267 * mailbox name to create
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268 * Returns: T on success, NIL on failure
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269 */
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270
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271 long tenex_create (MAILSTREAM *stream,char *mailbox)
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272 {
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273 char *s,mbx[MAILTMPLEN];
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274 if (s = dummy_file (mbx,mailbox)) return dummy_create (stream,s);
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275 sprintf (mbx,"Can't create %.80s: invalid name",mailbox);
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276 mm_log (mbx,ERROR);
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277 return NIL;
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278 }
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279
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280
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281 /* Tenex mail delete mailbox
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282 * Accepts: MAIL stream
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283 * mailbox name to delete
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284 * Returns: T on success, NIL on failure
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285 */
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286
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287 long tenex_delete (MAILSTREAM *stream,char *mailbox)
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288 {
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289 return tenex_rename (stream,mailbox,NIL);
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290 }
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291
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292 /* Tenex mail rename mailbox
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293 * Accepts: MAIL stream
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294 * old mailbox name
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295 * new mailbox name (or NIL for delete)
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296 * Returns: T on success, NIL on failure
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297 */
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298
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299 long tenex_rename (MAILSTREAM *stream,char *old,char *newname)
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300 {
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301 long ret = LONGT;
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302 char c,*s,tmp[MAILTMPLEN],file[MAILTMPLEN],lock[MAILTMPLEN];
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303 int fd,ld;
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304 struct stat sbuf;
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305 if (!dummy_file (file,old) ||
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306 (newname && (!((s = mailboxfile (tmp,newname)) && *s) ||
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307 ((s = strrchr (tmp,'\\')) && !s[1])))) {
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308 sprintf (tmp,newname ?
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309 "Can't rename mailbox %.80s to %.80s: invalid name" :
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310 "Can't delete mailbox %.80s: invalid name",
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311 old,newname);
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312 mm_log (tmp,ERROR);
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313 return NIL;
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314 }
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315 else if ((fd = open (file,O_BINARY|O_RDWR,NIL)) < 0) {
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316 sprintf (tmp,"Can't open mailbox %.80s: %s",old,strerror (errno));
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317 mm_log (tmp,ERROR);
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318 return NIL;
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319 }
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320 /* get exclusive parse/append permission */
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321 if ((ld = lockname (lock,file,LOCK_EX)) < 0) {
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322 mm_log ("Unable to lock rename mailbox",ERROR);
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323 return NIL;
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324 }
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325 /* lock out other users */
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326 if (flock (fd,LOCK_EX|LOCK_NB)) {
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327 close (fd); /* couldn't lock, give up on it then */
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328 sprintf (tmp,"Mailbox %.80s is in use by another process",old);
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329 mm_log (tmp,ERROR);
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330 unlockfd (ld,lock); /* release exclusive parse/append permission */
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331 return NIL;
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332 }
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333
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334 if (newname) { /* want rename? */
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335 /* found superior to destination name? */
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336 if ((s = strrchr (tmp,'\\')) && (s != tmp) &&
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337 ((tmp[1] != ':') || (s != tmp + 2))) {
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338 c = s[1]; /* remember character after delimiter */
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339 *s = s[1] = '\0'; /* tie off name at delimiter */
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340 /* name doesn't exist, create it */
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341 if (stat (tmp,&sbuf) || ((sbuf.st_mode & S_IFMT) != S_IFDIR)) {
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342 *s = '\\'; /* restore delimiter */
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343 if (!dummy_create (stream,tmp)) ret = NIL;
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344 }
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345 else *s = '\\'; /* restore delimiter */
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346 s[1] = c; /* restore character after delimiter */
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347 }
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348 flock (fd,LOCK_UN); /* release lock on the file */
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349 close (fd); /* pacify NTFS */
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350 /* rename the file */
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351 if (ret && rename (file,tmp)) {
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352 sprintf (tmp,"Can't rename mailbox %.80s to %.80s: %s",old,newname,
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353 strerror (errno));
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354 mm_log (tmp,ERROR);
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355 ret = NIL; /* set failure */
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356 }
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357 }
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358 else {
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359 flock (fd,LOCK_UN); /* release lock on the file */
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360 close (fd); /* pacify NTFS */
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361 if (unlink (file)) {
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362 sprintf (tmp,"Can't delete mailbox %.80s: %.80s",old,strerror (errno));
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363 mm_log (tmp,ERROR);
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364 ret = NIL; /* set failure */
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365 }
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366 }
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367 unlockfd (ld,lock); /* release exclusive parse/append permission */
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368 return ret; /* return success */
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369 }
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370
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371 /* Tenex mail open
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372 * Accepts: stream to open
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373 * Returns: stream on success, NIL on failure
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374 */
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375
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376 MAILSTREAM *tenex_open (MAILSTREAM *stream)
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377 {
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378 int fd,ld;
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379 char tmp[MAILTMPLEN];
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380 /* return prototype for OP_PROTOTYPE call */
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381 if (!stream) return &tenexproto;
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382 if (stream->local) fatal ("tenex recycle stream");
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383 /* canonicalize the mailbox name */
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384 if (!dummy_file (tmp,stream->mailbox)) {
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385 sprintf (tmp,"Can't open - invalid name: %.80s",stream->mailbox);
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386 mm_log (tmp,ERROR);
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387 }
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388 if (stream->rdonly ||
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389 (fd = open (tmp,O_BINARY|O_RDWR,NIL)) < 0) {
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390 if ((fd = open (tmp,O_BINARY|O_RDONLY,NIL)) < 0) {
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391 sprintf (tmp,"Can't open mailbox: %.80s",strerror (errno));
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392 mm_log (tmp,ERROR);
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393 return NIL;
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394 }
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395 else if (!stream->rdonly) { /* got it, but readonly */
|
|
|
396 mm_log ("Can't get write access to mailbox, access is readonly",WARN);
|
|
|
397 stream->rdonly = T;
|
|
|
398 }
|
|
|
399 }
|
|
|
400 stream->local = fs_get (sizeof (TENEXLOCAL));
|
|
|
401 LOCAL->fd = fd; /* bind the file */
|
|
|
402 LOCAL->buf = (char *) fs_get (CHUNKSIZE);
|
|
|
403 LOCAL->buflen = CHUNKSIZE - 1;
|
|
|
404 LOCAL->text.data = (unsigned char *) fs_get (CHUNKSIZE);
|
|
|
405 LOCAL->text.size = CHUNKSIZE - 1;
|
|
|
406 /* note if an INBOX or not */
|
|
|
407 stream->inbox = !compare_cstring (stream->mailbox,"INBOX");
|
|
|
408 fs_give ((void **) &stream->mailbox);
|
|
|
409 stream->mailbox = cpystr (tmp);
|
|
|
410 /* get shared parse permission */
|
|
|
411 if ((ld = lockname (tmp,stream->mailbox,LOCK_SH)) < 0) {
|
|
|
412 mm_log ("Unable to lock open mailbox",ERROR);
|
|
|
413 return NIL;
|
|
|
414 }
|
|
|
415 flock (LOCAL->fd,LOCK_SH); /* lock the file */
|
|
|
416 unlockfd (ld,tmp); /* release shared parse permission */
|
|
|
417 LOCAL->filesize = 0; /* initialize parsed file size */
|
|
|
418 LOCAL->filetime = 0; /* time not set up yet */
|
|
|
419 LOCAL->mustcheck = LOCAL->shouldcheck = NIL;
|
|
|
420 stream->sequence++; /* bump sequence number */
|
|
|
421 stream->uid_validity = (unsigned long) time (0);
|
|
|
422 /* parse mailbox */
|
|
|
423 stream->nmsgs = stream->recent = 0;
|
|
|
424 if (tenex_ping (stream) && !stream->nmsgs)
|
|
|
425 mm_log ("Mailbox is empty",(long) NIL);
|
|
|
426 if (!LOCAL) return NIL; /* failure if stream died */
|
|
|
427 stream->perm_seen = stream->perm_deleted =
|
|
|
428 stream->perm_flagged = stream->perm_answered = stream->perm_draft =
|
|
|
429 stream->rdonly ? NIL : T;
|
|
|
430 stream->perm_user_flags = stream->rdonly ? NIL : 0xffffffff;
|
|
|
431 return stream; /* return stream to caller */
|
|
|
432 }
|
|
|
433
|
|
|
434 /* Tenex mail close
|
|
|
435 * Accepts: MAIL stream
|
|
|
436 * close options
|
|
|
437 */
|
|
|
438
|
|
|
439 void tenex_close (MAILSTREAM *stream,long options)
|
|
|
440 {
|
|
|
441 if (stream && LOCAL) { /* only if a file is open */
|
|
|
442 int silent = stream->silent;
|
|
|
443 stream->silent = T; /* note this stream is dying */
|
|
|
444 if (options & CL_EXPUNGE) tenex_expunge (stream,NIL,NIL);
|
|
|
445 stream->silent = silent; /* restore previous status */
|
|
|
446 flock (LOCAL->fd,LOCK_UN); /* unlock local file */
|
|
|
447 close (LOCAL->fd); /* close the local file */
|
|
|
448 /* free local text buffer */
|
|
|
449 if (LOCAL->buf) fs_give ((void **) &LOCAL->buf);
|
|
|
450 if (LOCAL->text.data) fs_give ((void **) &LOCAL->text.data);
|
|
|
451 /* nuke the local data */
|
|
|
452 fs_give ((void **) &stream->local);
|
|
|
453 stream->dtb = NIL; /* log out the DTB */
|
|
|
454 }
|
|
|
455 }
|
|
|
456
|
|
|
457 /* Tenex mail fetch flags
|
|
|
458 * Accepts: MAIL stream
|
|
|
459 * sequence
|
|
|
460 * option flags
|
|
|
461 * Sniffs at file to get flags
|
|
|
462 */
|
|
|
463
|
|
|
464 void tenex_flags (MAILSTREAM *stream,char *sequence,long flags)
|
|
|
465 {
|
|
|
466 STRING bs;
|
|
|
467 MESSAGECACHE *elt;
|
|
|
468 unsigned long i;
|
|
|
469 if (stream && LOCAL &&
|
|
|
470 ((flags & FT_UID) ? mail_uid_sequence (stream,sequence) :
|
|
|
471 mail_sequence (stream,sequence)))
|
|
|
472 for (i = 1; i <= stream->nmsgs; i++)
|
|
|
473 if ((elt = mail_elt (stream,i))->sequence) {
|
|
|
474 if (!elt->rfc822_size) { /* have header size yet? */
|
|
|
475 lseek (LOCAL->fd,elt->private.special.offset +
|
|
|
476 elt->private.special.text.size,L_SET);
|
|
|
477 /* resize bigbuf if necessary */
|
|
|
478 if (LOCAL->buflen < elt->private.msg.full.text.size) {
|
|
|
479 fs_give ((void **) &LOCAL->buf);
|
|
|
480 LOCAL->buflen = elt->private.msg.full.text.size;
|
|
|
481 LOCAL->buf = (char *) fs_get (LOCAL->buflen + 1);
|
|
|
482 }
|
|
|
483 /* tie off string */
|
|
|
484 LOCAL->buf[elt->private.msg.full.text.size] = '\0';
|
|
|
485 /* read in the message */
|
|
|
486 read (LOCAL->fd,LOCAL->buf,elt->private.msg.full.text.size);
|
|
|
487 INIT (&bs,mail_string,(void *) LOCAL->buf,
|
|
|
488 elt->private.msg.full.text.size);
|
|
|
489 /* calculate its CRLF size */
|
|
|
490 elt->rfc822_size = unix_crlflen (&bs);
|
|
|
491 }
|
|
|
492 tenex_elt (stream,i); /* get current flags from file */
|
|
|
493 }
|
|
|
494 }
|
|
|
495
|
|
|
496 /* TENEX mail fetch message header
|
|
|
497 * Accepts: MAIL stream
|
|
|
498 * message # to fetch
|
|
|
499 * pointer to returned header text length
|
|
|
500 * option flags
|
|
|
501 * Returns: message header in RFC822 format
|
|
|
502 */
|
|
|
503
|
|
|
504 char *tenex_header (MAILSTREAM *stream,unsigned long msgno,
|
|
|
505 unsigned long *length,long flags)
|
|
|
506 {
|
|
|
507 char *s;
|
|
|
508 unsigned long i;
|
|
|
509 *length = 0; /* default to empty */
|
|
|
510 if (flags & FT_UID) return "";/* UID call "impossible" */
|
|
|
511 /* get to header position */
|
|
|
512 lseek (LOCAL->fd,tenex_hdrpos (stream,msgno,&i),L_SET);
|
|
|
513 if (flags & FT_INTERNAL) {
|
|
|
514 if (i > LOCAL->buflen) { /* resize if not enough space */
|
|
|
515 fs_give ((void **) &LOCAL->buf);
|
|
|
516 LOCAL->buf = (char *) fs_get (LOCAL->buflen = i + 1);
|
|
|
517 }
|
|
|
518 /* slurp the data */
|
|
|
519 read (LOCAL->fd,LOCAL->buf,*length = i);
|
|
|
520 }
|
|
|
521 else {
|
|
|
522 s = (char *) fs_get (i + 1);/* get readin buffer */
|
|
|
523 s[i] = '\0'; /* tie off string */
|
|
|
524 read (LOCAL->fd,s,i); /* slurp the data */
|
|
|
525 /* make CRLF copy of string */
|
|
|
526 *length = unix_crlfcpy (&LOCAL->buf,&LOCAL->buflen,s,i);
|
|
|
527 fs_give ((void **) &s); /* free readin buffer */
|
|
|
528 }
|
|
|
529 return LOCAL->buf;
|
|
|
530 }
|
|
|
531
|
|
|
532 /* TENEX mail fetch message text (body only)
|
|
|
533 * Accepts: MAIL stream
|
|
|
534 * message # to fetch
|
|
|
535 * pointer to returned stringstruct
|
|
|
536 * option flags
|
|
|
537 * Returns: T, always
|
|
|
538 */
|
|
|
539
|
|
|
540 long tenex_text (MAILSTREAM *stream,unsigned long msgno,STRING *bs,long flags)
|
|
|
541 {
|
|
|
542 char *s;
|
|
|
543 unsigned long i,j;
|
|
|
544 MESSAGECACHE *elt;
|
|
|
545 /* UID call "impossible" */
|
|
|
546 if (flags & FT_UID) return NIL;
|
|
|
547 /* get message status */
|
|
|
548 elt = tenex_elt (stream,msgno);
|
|
|
549 /* if message not seen */
|
|
|
550 if (!(flags & FT_PEEK) && !elt->seen) {
|
|
|
551 elt->seen = T; /* mark message as seen */
|
|
|
552 /* recalculate status */
|
|
|
553 tenex_update_status (stream,msgno,T);
|
|
|
554 mm_flags (stream,msgno);
|
|
|
555 }
|
|
|
556 if (flags & FT_INTERNAL) { /* if internal representation wanted */
|
|
|
557 /* find header position */
|
|
|
558 i = tenex_hdrpos (stream,msgno,&j);
|
|
|
559 if (i > LOCAL->buflen) { /* resize if not enough space */
|
|
|
560 fs_give ((void **) &LOCAL->buf);
|
|
|
561 LOCAL->buf = (char *) fs_get (LOCAL->buflen = i + 1);
|
|
|
562 }
|
|
|
563 /* go to text position */
|
|
|
564 lseek (LOCAL->fd,i + j,L_SET);
|
|
|
565 /* slurp the data */
|
|
|
566 if (read (LOCAL->fd,LOCAL->buf,i) != (long) i) return NIL;
|
|
|
567 /* set up stringstruct for internal */
|
|
|
568 INIT (bs,mail_string,LOCAL->buf,i);
|
|
|
569 }
|
|
|
570 else { /* normal form, previous text cached? */
|
|
|
571 if (elt->private.uid == LOCAL->uid)
|
|
|
572 i = elt->private.msg.text.text.size;
|
|
|
573 else { /* not cached, cache it now */
|
|
|
574 LOCAL->uid = elt->private.uid;
|
|
|
575 /* find header position */
|
|
|
576 i = tenex_hdrpos (stream,msgno,&j);
|
|
|
577 /* go to text position */
|
|
|
578 lseek (LOCAL->fd,i + j,L_SET);
|
|
|
579 s = (char *) fs_get ((i = tenex_size (stream,msgno) - j) + 1);
|
|
|
580 s[i] = '\0'; /* tie off string */
|
|
|
581 read (LOCAL->fd,s,i); /* slurp the data */
|
|
|
582 /* make CRLF copy of string */
|
|
|
583 i = elt->private.msg.text.text.size =
|
|
|
584 strcrlfcpy (&LOCAL->text.data,&LOCAL->text.size,s,i);
|
|
|
585 fs_give ((void **) &s); /* free readin buffer */
|
|
|
586 }
|
|
|
587 /* set up stringstruct */
|
|
|
588 INIT (bs,mail_string,LOCAL->text.data,i);
|
|
|
589 }
|
|
|
590 return T; /* success */
|
|
|
591 }
|
|
|
592
|
|
|
593 /* Tenex mail modify flags
|
|
|
594 * Accepts: MAIL stream
|
|
|
595 * sequence
|
|
|
596 * flag(s)
|
|
|
597 * option flags
|
|
|
598 */
|
|
|
599
|
|
|
600 void tenex_flag (MAILSTREAM *stream,char *sequence,char *flag,long flags)
|
|
|
601 {
|
|
|
602 struct utimbuf times;
|
|
|
603 struct stat sbuf;
|
|
|
604 if (!stream->rdonly) { /* make sure the update takes */
|
|
|
605 fsync (LOCAL->fd);
|
|
|
606 fstat (LOCAL->fd,&sbuf); /* get current write time */
|
|
|
607 times.modtime = LOCAL->filetime = sbuf.st_mtime;
|
|
|
608 times.actime = time (0); /* make sure read comes after all that */
|
|
|
609 utime (stream->mailbox,×);
|
|
|
610 }
|
|
|
611 }
|
|
|
612
|
|
|
613
|
|
|
614 /* Tenex mail per-message modify flags
|
|
|
615 * Accepts: MAIL stream
|
|
|
616 * message cache element
|
|
|
617 */
|
|
|
618
|
|
|
619 void tenex_flagmsg (MAILSTREAM *stream,MESSAGECACHE *elt)
|
|
|
620 {
|
|
|
621 struct stat sbuf;
|
|
|
622 /* maybe need to do a checkpoint? */
|
|
|
623 if (LOCAL->filetime && !LOCAL->shouldcheck) {
|
|
|
624 fstat (LOCAL->fd,&sbuf); /* get current write time */
|
|
|
625 if (LOCAL->filetime < sbuf.st_mtime) LOCAL->shouldcheck = T;
|
|
|
626 LOCAL->filetime = 0; /* don't do this test for any other messages */
|
|
|
627 }
|
|
|
628 /* recalculate status */
|
|
|
629 tenex_update_status (stream,elt->msgno,NIL);
|
|
|
630 }
|
|
|
631
|
|
|
632 /* Tenex mail ping mailbox
|
|
|
633 * Accepts: MAIL stream
|
|
|
634 * Returns: T if stream still alive, NIL if not
|
|
|
635 */
|
|
|
636
|
|
|
637 long tenex_ping (MAILSTREAM *stream)
|
|
|
638 {
|
|
|
639 unsigned long i = 1;
|
|
|
640 long r = T;
|
|
|
641 int ld;
|
|
|
642 char lock[MAILTMPLEN];
|
|
|
643 struct stat sbuf;
|
|
|
644 if (stream && LOCAL) { /* only if stream already open */
|
|
|
645 fstat (LOCAL->fd,&sbuf); /* get current file poop */
|
|
|
646 if (LOCAL->filetime && !(LOCAL->mustcheck || LOCAL->shouldcheck) &&
|
|
|
647 (LOCAL->filetime < sbuf.st_mtime)) LOCAL->shouldcheck = T;
|
|
|
648 /* check for changed message status */
|
|
|
649 if (LOCAL->mustcheck || LOCAL->shouldcheck) {
|
|
|
650 LOCAL->filetime = sbuf.st_mtime;
|
|
|
651 if (LOCAL->shouldcheck) /* babble when we do this unilaterally */
|
|
|
652 mm_notify (stream,"[CHECK] Checking for flag updates",NIL);
|
|
|
653 while (i <= stream->nmsgs) tenex_elt (stream,i++);
|
|
|
654 LOCAL->mustcheck = LOCAL->shouldcheck = NIL;
|
|
|
655 }
|
|
|
656 /* get shared parse/append permission */
|
|
|
657 if ((sbuf.st_size != LOCAL->filesize) &&
|
|
|
658 ((ld = lockname (lock,stream->mailbox,LOCK_SH)) >= 0)) {
|
|
|
659 /* parse resulting mailbox */
|
|
|
660 r = (tenex_parse (stream)) ? T : NIL;
|
|
|
661 unlockfd (ld,lock); /* release shared parse/append permission */
|
|
|
662 }
|
|
|
663 }
|
|
|
664 return r; /* return result of the parse */
|
|
|
665 }
|
|
|
666
|
|
|
667
|
|
|
668 /* Tenex mail check mailbox (reparses status too)
|
|
|
669 * Accepts: MAIL stream
|
|
|
670 */
|
|
|
671
|
|
|
672 void tenex_check (MAILSTREAM *stream)
|
|
|
673 {
|
|
|
674 /* mark that a check is desired */
|
|
|
675 if (LOCAL) LOCAL->mustcheck = T;
|
|
|
676 if (tenex_ping (stream)) mm_log ("Check completed",(long) NIL);
|
|
|
677 }
|
|
|
678
|
|
|
679 /* Tenex mail expunge mailbox
|
|
|
680 * sequence to expunge if non-NIL
|
|
|
681 * expunge options
|
|
|
682 * Returns: T, always
|
|
|
683 */
|
|
|
684
|
|
|
685 long tenex_expunge (MAILSTREAM *stream,char *sequence,long options)
|
|
|
686 {
|
|
|
687 long ret;
|
|
|
688 struct utimbuf times;
|
|
|
689 struct stat sbuf;
|
|
|
690 off_t pos = 0;
|
|
|
691 int ld;
|
|
|
692 unsigned long i = 1;
|
|
|
693 unsigned long j,k,m,recent;
|
|
|
694 unsigned long n = 0;
|
|
|
695 unsigned long delta = 0;
|
|
|
696 char lock[MAILTMPLEN];
|
|
|
697 MESSAGECACHE *elt;
|
|
|
698 if (!(ret = (sequence ? ((options & EX_UID) ?
|
|
|
699 mail_uid_sequence (stream,sequence) :
|
|
|
700 mail_sequence (stream,sequence)) : LONGT) &&
|
|
|
701 tenex_ping (stream))); /* parse sequence if given, ping stream */
|
|
|
702 else if (stream->rdonly) mm_log ("Expunge ignored on readonly mailbox",WARN);
|
|
|
703 else {
|
|
|
704 if (LOCAL->filetime && !LOCAL->shouldcheck) {
|
|
|
705 fstat (LOCAL->fd,&sbuf); /* get current write time */
|
|
|
706 if (LOCAL->filetime < sbuf.st_mtime) LOCAL->shouldcheck = T;
|
|
|
707 }
|
|
|
708 /* get exclusive access */
|
|
|
709 if ((ld = lockname (lock,stream->mailbox,LOCK_EX)) < 0)
|
|
|
710 mm_log ("Unable to lock expunge mailbox",ERROR);
|
|
|
711 /* make sure see any newly-arrived messages */
|
|
|
712 else if (!tenex_parse (stream));
|
|
|
713 /* get exclusive access */
|
|
|
714 else if (flock (LOCAL->fd,LOCK_EX|LOCK_NB)) {
|
|
|
715 flock (LOCAL->fd,LOCK_SH);/* recover previous lock */
|
|
|
716 mm_log ("Can't expunge because mailbox is in use by another process",
|
|
|
717 ERROR);
|
|
|
718 unlockfd (ld,lock); /* release exclusive parse/append permission */
|
|
|
719 }
|
|
|
720
|
|
|
721 else {
|
|
|
722 mm_critical (stream); /* go critical */
|
|
|
723 recent = stream->recent; /* get recent now that pinged and locked */
|
|
|
724 /* for each message */
|
|
|
725 while (i <= stream->nmsgs) {
|
|
|
726 /* get cache element */
|
|
|
727 elt = tenex_elt (stream,i);
|
|
|
728 /* number of bytes to smash or preserve */
|
|
|
729 k = elt->private.special.text.size + tenex_size (stream,i);
|
|
|
730 /* if need to expunge this message */
|
|
|
731 if (elt->deleted && (sequence ? elt->sequence : T)) {
|
|
|
732 /* if recent, note one less recent message */
|
|
|
733 if (elt->recent) --recent;
|
|
|
734 delta += k; /* number of bytes to delete */
|
|
|
735 /* notify upper levels */
|
|
|
736 mail_expunged (stream,i);
|
|
|
737 n++; /* count up one more expunged message */
|
|
|
738 }
|
|
|
739 else if (i++ && delta) {/* preserved message */
|
|
|
740 /* first byte to preserve */
|
|
|
741 j = elt->private.special.offset;
|
|
|
742 do { /* read from source position */
|
|
|
743 m = min (k,LOCAL->buflen);
|
|
|
744 lseek (LOCAL->fd,j,L_SET);
|
|
|
745 read (LOCAL->fd,LOCAL->buf,m);
|
|
|
746 pos = j - delta; /* write to destination position */
|
|
|
747 while (T) {
|
|
|
748 lseek (LOCAL->fd,pos,L_SET);
|
|
|
749 if (write (LOCAL->fd,LOCAL->buf,m) > 0) break;
|
|
|
750 mm_notify (stream,strerror (errno),WARN);
|
|
|
751 mm_diskerror (stream,errno,T);
|
|
|
752 }
|
|
|
753 pos += m; /* new position */
|
|
|
754 j += m; /* next chunk, perhaps */
|
|
|
755 } while (k -= m); /* until done */
|
|
|
756 /* note the new address of this text */
|
|
|
757 elt->private.special.offset -= delta;
|
|
|
758 }
|
|
|
759 /* preserved but no deleted messages */
|
|
|
760 else pos = elt->private.special.offset + k;
|
|
|
761 }
|
|
|
762
|
|
|
763 if (n) { /* truncate file after last message */
|
|
|
764 if (pos != (LOCAL->filesize -= delta)) {
|
|
|
765 sprintf (LOCAL->buf,
|
|
|
766 "Calculated size mismatch %lu != %lu, delta = %lu",
|
|
|
767 (unsigned long) pos,(unsigned long) LOCAL->filesize,delta);
|
|
|
768 mm_log (LOCAL->buf,WARN);
|
|
|
769 LOCAL->filesize = pos;/* fix it then */
|
|
|
770 }
|
|
|
771 ftruncate (LOCAL->fd,LOCAL->filesize);
|
|
|
772 sprintf (LOCAL->buf,"Expunged %lu messages",n);
|
|
|
773 /* output the news */
|
|
|
774 mm_log (LOCAL->buf,(long) NIL);
|
|
|
775 }
|
|
|
776 else mm_log ("No messages deleted, so no update needed",(long) NIL);
|
|
|
777 fsync (LOCAL->fd); /* force disk update */
|
|
|
778 fstat (LOCAL->fd,&sbuf); /* get new write time */
|
|
|
779 times.modtime = LOCAL->filetime = sbuf.st_mtime;
|
|
|
780 times.actime = time (0); /* reset atime to now */
|
|
|
781 utime (stream->mailbox,×);
|
|
|
782 mm_nocritical (stream); /* release critical */
|
|
|
783 /* notify upper level of new mailbox size */
|
|
|
784 mail_exists (stream,stream->nmsgs);
|
|
|
785 mail_recent (stream,recent);
|
|
|
786 flock (LOCAL->fd,LOCK_SH);/* allow sharers again */
|
|
|
787 unlockfd (ld,lock); /* release exclusive parse/append permission */
|
|
|
788 }
|
|
|
789 }
|
|
|
790 return ret;
|
|
|
791 }
|
|
|
792
|
|
|
793 /* Tenex mail copy message(s)
|
|
|
794 * Accepts: MAIL stream
|
|
|
795 * sequence
|
|
|
796 * destination mailbox
|
|
|
797 * copy options
|
|
|
798 * Returns: T if success, NIL if failed
|
|
|
799 */
|
|
|
800
|
|
|
801 long tenex_copy (MAILSTREAM *stream,char *sequence,char *mailbox,long options)
|
|
|
802 {
|
|
|
803 struct stat sbuf;
|
|
|
804 struct utimbuf times;
|
|
|
805 MESSAGECACHE *elt;
|
|
|
806 unsigned long i,j,k;
|
|
|
807 long ret = LONGT;
|
|
|
808 int fd,ld;
|
|
|
809 char file[MAILTMPLEN],lock[MAILTMPLEN];
|
|
|
810 mailproxycopy_t pc =
|
|
|
811 (mailproxycopy_t) mail_parameters (stream,GET_MAILPROXYCOPY,NIL);
|
|
|
812 /* make sure valid mailbox */
|
|
|
813 if (!tenex_isvalid (mailbox,file)) switch (errno) {
|
|
|
814 case ENOENT: /* no such file? */
|
|
|
815 mm_notify (stream,"[TRYCREATE] Must create mailbox before copy",NIL);
|
|
|
816 return NIL;
|
|
|
817 case 0: /* merely empty file? */
|
|
|
818 break;
|
|
|
819 case EACCES: /* file protected */
|
|
|
820 sprintf (LOCAL->buf,"Can't access destination: %.80s",mailbox);
|
|
|
821 MM_LOG (LOCAL->buf,ERROR);
|
|
|
822 return NIL;
|
|
|
823 case EINVAL:
|
|
|
824 if (pc) return (*pc) (stream,sequence,mailbox,options);
|
|
|
825 sprintf (LOCAL->buf,"Invalid Tenex-format mailbox name: %.80s",mailbox);
|
|
|
826 mm_log (LOCAL->buf,ERROR);
|
|
|
827 return NIL;
|
|
|
828 default:
|
|
|
829 if (pc) return (*pc) (stream,sequence,mailbox,options);
|
|
|
830 sprintf (LOCAL->buf,"Not a Tenex-format mailbox: %.80s",mailbox);
|
|
|
831 mm_log (LOCAL->buf,ERROR);
|
|
|
832 return NIL;
|
|
|
833 }
|
|
|
834 if (!((options & CP_UID) ? mail_uid_sequence (stream,sequence) :
|
|
|
835 mail_sequence (stream,sequence))) return NIL;
|
|
|
836 /* got file? */
|
|
|
837 if ((fd = open (file,O_BINARY|O_RDWR|O_CREAT,S_IREAD|S_IWRITE)) < 0) {
|
|
|
838 sprintf (LOCAL->buf,"Unable to open copy mailbox: %.80s",strerror (errno));
|
|
|
839 mm_log (LOCAL->buf,ERROR);
|
|
|
840 return NIL;
|
|
|
841 }
|
|
|
842 mm_critical (stream); /* go critical */
|
|
|
843 /* get exclusive parse/append permission */
|
|
|
844 if (flock (fd,LOCK_SH) || ((ld = lockname (lock,file,LOCK_EX)) < 0)) {
|
|
|
845 mm_log ("Unable to lock copy mailbox",ERROR);
|
|
|
846 mm_nocritical (stream);
|
|
|
847 return NIL;
|
|
|
848 }
|
|
|
849 fstat (fd,&sbuf); /* get current file size */
|
|
|
850 lseek (fd,sbuf.st_size,L_SET);/* move to end of file */
|
|
|
851
|
|
|
852 /* for each requested message */
|
|
|
853 for (i = 1; ret && (i <= stream->nmsgs); i++)
|
|
|
854 if ((elt = mail_elt (stream,i))->sequence) {
|
|
|
855 lseek (LOCAL->fd,elt->private.special.offset,L_SET);
|
|
|
856 /* number of bytes to copy */
|
|
|
857 k = elt->private.special.text.size + tenex_size (stream,i);
|
|
|
858 do { /* read from source position */
|
|
|
859 j = min (k,LOCAL->buflen);
|
|
|
860 read (LOCAL->fd,LOCAL->buf,j);
|
|
|
861 if (write (fd,LOCAL->buf,j) < 0) ret = NIL;
|
|
|
862 } while (ret && (k -= j));/* until done */
|
|
|
863 }
|
|
|
864 /* delete all requested messages */
|
|
|
865 if (ret && (options & CP_MOVE)) {
|
|
|
866 sprintf (LOCAL->buf,"Unable to write message: %s",strerror (errno));
|
|
|
867 mm_log (LOCAL->buf,ERROR);
|
|
|
868 ftruncate (fd,sbuf.st_size);
|
|
|
869 }
|
|
|
870 /* set atime to now-1 if successful copy */
|
|
|
871 if (ret) times.actime = time (0) - 1;
|
|
|
872 /* else preserved \Marked status */
|
|
|
873 else times.actime = (sbuf.st_ctime > sbuf.st_atime) ?
|
|
|
874 sbuf.st_atime : time (0);
|
|
|
875 times.modtime = sbuf.st_mtime;/* preserve mtime */
|
|
|
876 utime (file,×); /* set the times */
|
|
|
877 unlockfd (ld,lock); /* release exclusive parse/append permission */
|
|
|
878 close (fd); /* close the file */
|
|
|
879 mm_nocritical (stream); /* release critical */
|
|
|
880 /* delete all requested messages */
|
|
|
881 if (ret && (options & CP_MOVE)) {
|
|
|
882 for (i = 1; i <= stream->nmsgs; i++)
|
|
|
883 if ((elt = tenex_elt (stream,i))->sequence) {
|
|
|
884 elt->deleted = T; /* mark message deleted */
|
|
|
885 /* recalculate status */
|
|
|
886 tenex_update_status (stream,i,NIL);
|
|
|
887 }
|
|
|
888 if (!stream->rdonly) { /* make sure the update takes */
|
|
|
889 fsync (LOCAL->fd);
|
|
|
890 fstat (LOCAL->fd,&sbuf); /* get current write time */
|
|
|
891 times.modtime = LOCAL->filetime = sbuf.st_mtime;
|
|
|
892 times.actime = time (0); /* make sure atime remains greater */
|
|
|
893 utime (stream->mailbox,×);
|
|
|
894 }
|
|
|
895 }
|
|
|
896 if (ret && mail_parameters (NIL,GET_COPYUID,NIL))
|
|
|
897 mm_log ("Can not return meaningful COPYUID with this mailbox format",WARN);
|
|
|
898 return ret;
|
|
|
899 }
|
|
|
900
|
|
|
901 /* Tenex mail append message from stringstruct
|
|
|
902 * Accepts: MAIL stream
|
|
|
903 * destination mailbox
|
|
|
904 * append callback
|
|
|
905 * data for callback
|
|
|
906 * Returns: T if append successful, else NIL
|
|
|
907 */
|
|
|
908
|
|
|
909 long tenex_append (MAILSTREAM *stream,char *mailbox,append_t af,void *data)
|
|
|
910 {
|
|
|
911 struct stat sbuf;
|
|
|
912 int fd,ld,c;
|
|
|
913 char *flags,*date,tmp[MAILTMPLEN],file[MAILTMPLEN],lock[MAILTMPLEN];
|
|
|
914 struct utimbuf times;
|
|
|
915 FILE *df;
|
|
|
916 MESSAGECACHE elt;
|
|
|
917 long f;
|
|
|
918 unsigned long i,j,uf,size;
|
|
|
919 STRING *message;
|
|
|
920 long ret = LONGT;
|
|
|
921 /* default stream to prototype */
|
|
|
922 if (!stream) stream = &tenexproto;
|
|
|
923 /* make sure valid mailbox */
|
|
|
924 if (!tenex_isvalid (mailbox,file)) switch (errno) {
|
|
|
925 case ENOENT: /* no such file? */
|
|
|
926 if (!compare_cstring (mailbox,"INBOX")) tenex_create (NIL,"INBOX");
|
|
|
927 else {
|
|
|
928 mm_notify (stream,"[TRYCREATE] Must create mailbox before append",NIL);
|
|
|
929 return NIL;
|
|
|
930 }
|
|
|
931 /* falls through */
|
|
|
932 case 0: /* merely empty file? */
|
|
|
933 break;
|
|
|
934 case EACCES: /* file protected */
|
|
|
935 sprintf (tmp,"Can't access destination: %.80s",mailbox);
|
|
|
936 MM_LOG (tmp,ERROR);
|
|
|
937 return NIL;
|
|
|
938 case EINVAL:
|
|
|
939 sprintf (tmp,"Invalid TENEX-format mailbox name: %.80s",mailbox);
|
|
|
940 mm_log (tmp,ERROR);
|
|
|
941 return NIL;
|
|
|
942 default:
|
|
|
943 sprintf (tmp,"Not a TENEX-format mailbox: %.80s",mailbox);
|
|
|
944 mm_log (tmp,ERROR);
|
|
|
945 return NIL;
|
|
|
946 }
|
|
|
947 /* get first message */
|
|
|
948 if (!(*af) (stream,data,&flags,&date,&message)) return NIL;
|
|
|
949
|
|
|
950 /* open destination mailbox */
|
|
|
951 if (((fd = open (file,O_BINARY|O_WRONLY|O_APPEND|O_CREAT,S_IREAD|S_IWRITE))
|
|
|
952 < 0) || !(df = fdopen (fd,"ab"))) {
|
|
|
953 sprintf (tmp,"Can't open append mailbox: %s",strerror (errno));
|
|
|
954 mm_log (tmp,ERROR);
|
|
|
955 return NIL;
|
|
|
956 }
|
|
|
957 /* get parse/append permission */
|
|
|
958 if (flock (fd,LOCK_SH) || ((ld = lockname (lock,file,LOCK_EX)) < 0)) {
|
|
|
959 mm_log ("Unable to lock append mailbox",ERROR);
|
|
|
960 close (fd);
|
|
|
961 return NIL;
|
|
|
962 }
|
|
|
963 mm_critical (stream); /* go critical */
|
|
|
964 fstat (fd,&sbuf); /* get current file size */
|
|
|
965 errno = 0;
|
|
|
966 do { /* parse flags */
|
|
|
967 if (!SIZE (message)) { /* guard against zero-length */
|
|
|
968 mm_log ("Append of zero-length message",ERROR);
|
|
|
969 ret = NIL;
|
|
|
970 break;
|
|
|
971 }
|
|
|
972 f = mail_parse_flags (stream,flags,&i);
|
|
|
973 /* reverse bits (dontcha wish we had CIRC?) */
|
|
|
974 for (uf = 0; i; uf |= 1 << (29 - find_rightmost_bit (&i)));
|
|
|
975 if (date) { /* parse date if given */
|
|
|
976 if (!mail_parse_date (&elt,date)) {
|
|
|
977 sprintf (tmp,"Bad date in append: %.80s",date);
|
|
|
978 mm_log (tmp,ERROR);
|
|
|
979 ret = NIL; /* mark failure */
|
|
|
980 break;
|
|
|
981 }
|
|
|
982 mail_date (tmp,&elt); /* write preseved date */
|
|
|
983 }
|
|
|
984 else internal_date (tmp); /* get current date in IMAP format */
|
|
|
985 i = GETPOS (message); /* remember current position */
|
|
|
986 for (j = SIZE (message), size = 0; j; --j)
|
|
|
987 if (SNX (message) != '\015') ++size;
|
|
|
988 SETPOS (message,i); /* restore position */
|
|
|
989 /* write header */
|
|
|
990 if (fprintf (df,"%s,%lu;%010lo%02lo\n",tmp,size,uf,(unsigned long) f) < 0)
|
|
|
991 ret = NIL;
|
|
|
992 else { /* write message */
|
|
|
993 while (size) if ((c = 0xff & SNX (message)) != '\015') {
|
|
|
994 if (putc (c,df) != EOF) --size;
|
|
|
995 else break;
|
|
|
996 }
|
|
|
997 /* get next message */
|
|
|
998 if (size || !(*af) (stream,data,&flags,&date,&message)) ret = NIL;
|
|
|
999 }
|
|
|
1000 } while (ret && message);
|
|
|
1001 /* if error... */
|
|
|
1002 if (!ret || (fflush (df) == EOF)) {
|
|
|
1003 ftruncate (fd,sbuf.st_size);/* revert file */
|
|
|
1004 close (fd); /* make sure fclose() doesn't corrupt us */
|
|
|
1005 if (errno) {
|
|
|
1006 sprintf (tmp,"Message append failed: %s",strerror (errno));
|
|
|
1007 mm_log (tmp,ERROR);
|
|
|
1008 }
|
|
|
1009 ret = NIL;
|
|
|
1010 }
|
|
|
1011 if (ret) times.actime = time (0) - 1;
|
|
|
1012 /* else preserved \Marked status */
|
|
|
1013 else times.actime = (sbuf.st_ctime > sbuf.st_atime) ?
|
|
|
1014 sbuf.st_atime : time (0);
|
|
|
1015 times.modtime = sbuf.st_mtime;/* preserve mtime */
|
|
|
1016 utime (file,×); /* set the times */
|
|
|
1017 fclose (df); /* close the file */
|
|
|
1018 unlockfd (ld,lock); /* release exclusive parse/append permission */
|
|
|
1019 mm_nocritical (stream); /* release critical */
|
|
|
1020 if (ret && mail_parameters (NIL,GET_APPENDUID,NIL))
|
|
|
1021 mm_log ("Can not return meaningful APPENDUID with this mailbox format",
|
|
|
1022 WARN);
|
|
|
1023 return ret;
|
|
|
1024 }
|
|
|
1025
|
|
|
1026 /* Internal routines */
|
|
|
1027
|
|
|
1028
|
|
|
1029 /* Tenex mail return internal message size in bytes
|
|
|
1030 * Accepts: MAIL stream
|
|
|
1031 * message #
|
|
|
1032 * Returns: internal size of message
|
|
|
1033 */
|
|
|
1034
|
|
|
1035 unsigned long tenex_size (MAILSTREAM *stream,unsigned long m)
|
|
|
1036 {
|
|
|
1037 MESSAGECACHE *elt = mail_elt (stream,m);
|
|
|
1038 return ((m < stream->nmsgs) ? mail_elt (stream,m+1)->private.special.offset :
|
|
|
1039 LOCAL->filesize) -
|
|
|
1040 (elt->private.special.offset + elt->private.special.text.size);
|
|
|
1041 }
|
|
|
1042
|
|
|
1043 /* Tenex mail parse mailbox
|
|
|
1044 * Accepts: MAIL stream
|
|
|
1045 * Returns: T if parse OK
|
|
|
1046 * NIL if failure, stream aborted
|
|
|
1047 */
|
|
|
1048
|
|
|
1049 long tenex_parse (MAILSTREAM *stream)
|
|
|
1050 {
|
|
|
1051 struct stat sbuf;
|
|
|
1052 MESSAGECACHE *elt = NIL;
|
|
|
1053 unsigned char c,*s,*t,*x;
|
|
|
1054 char tmp[MAILTMPLEN];
|
|
|
1055 unsigned long i,j;
|
|
|
1056 long curpos = LOCAL->filesize;
|
|
|
1057 long nmsgs = stream->nmsgs;
|
|
|
1058 long recent = stream->recent;
|
|
|
1059 short added = NIL;
|
|
|
1060 short silent = stream->silent;
|
|
|
1061 fstat (LOCAL->fd,&sbuf); /* get status */
|
|
|
1062 if (sbuf.st_size < curpos) { /* sanity check */
|
|
|
1063 sprintf (tmp,"Mailbox shrank from %ld to %ld!",curpos,sbuf.st_size);
|
|
|
1064 mm_log (tmp,ERROR);
|
|
|
1065 tenex_close (stream,NIL);
|
|
|
1066 return NIL;
|
|
|
1067 }
|
|
|
1068 stream->silent = T; /* don't pass up mm_exists() events yet */
|
|
|
1069 while (sbuf.st_size - curpos){/* while there is stuff to parse */
|
|
|
1070 /* get to that position in the file */
|
|
|
1071 lseek (LOCAL->fd,curpos,L_SET);
|
|
|
1072 if ((i = read (LOCAL->fd,LOCAL->buf,64)) <= 0) {
|
|
|
1073 sprintf (tmp,"Unable to read internal header at %lu, size = %lu: %s",
|
|
|
1074 (unsigned long) curpos,(unsigned long) sbuf.st_size,
|
|
|
1075 i ? strerror (errno) : "no data read");
|
|
|
1076 mm_log (tmp,ERROR);
|
|
|
1077 tenex_close (stream,NIL);
|
|
|
1078 return NIL;
|
|
|
1079 }
|
|
|
1080 LOCAL->buf[i] = '\0'; /* tie off buffer just in case */
|
|
|
1081 if (!(s = strchr (LOCAL->buf,'\012'))) {
|
|
|
1082 sprintf (tmp,"Unable to find newline at %lu in %lu bytes, text: %s",
|
|
|
1083 (unsigned long) curpos,i,(char *) LOCAL->buf);
|
|
|
1084 mm_log (tmp,ERROR);
|
|
|
1085 tenex_close (stream,NIL);
|
|
|
1086 return NIL;
|
|
|
1087 }
|
|
|
1088 *s = '\0'; /* tie off header line */
|
|
|
1089 i = (s + 1) - LOCAL->buf; /* note start of text offset */
|
|
|
1090 if (!((s = strchr (LOCAL->buf,',')) && (t = strchr (s+1,';')))) {
|
|
|
1091 sprintf (tmp,"Unable to parse internal header at %lu: %s",
|
|
|
1092 (unsigned long) curpos,(char *) LOCAL->buf);
|
|
|
1093 mm_log (tmp,ERROR);
|
|
|
1094 tenex_close (stream,NIL);
|
|
|
1095 return NIL;
|
|
|
1096 }
|
|
|
1097 *s++ = '\0'; *t++ = '\0'; /* tie off fields */
|
|
|
1098
|
|
|
1099 added = T; /* note that a new message was added */
|
|
|
1100 /* swell the cache */
|
|
|
1101 mail_exists (stream,++nmsgs);
|
|
|
1102 /* instantiate an elt for this message */
|
|
|
1103 (elt = mail_elt (stream,nmsgs))->valid = T;
|
|
|
1104 elt->private.uid = ++stream->uid_last;
|
|
|
1105 /* note file offset of header */
|
|
|
1106 elt->private.special.offset = curpos;
|
|
|
1107 /* in case error */
|
|
|
1108 elt->private.special.text.size = 0;
|
|
|
1109 /* header size not known yet */
|
|
|
1110 elt->private.msg.header.text.size = 0;
|
|
|
1111 x = s; /* parse the header components */
|
|
|
1112 if (mail_parse_date (elt,LOCAL->buf) &&
|
|
|
1113 (elt->private.msg.full.text.size = strtoul (s,(char **) &s,10)) &&
|
|
|
1114 (!(s && *s)) && isdigit (t[0]) && isdigit (t[1]) && isdigit (t[2]) &&
|
|
|
1115 isdigit (t[3]) && isdigit (t[4]) && isdigit (t[5]) &&
|
|
|
1116 isdigit (t[6]) && isdigit (t[7]) && isdigit (t[8]) &&
|
|
|
1117 isdigit (t[9]) && isdigit (t[10]) && isdigit (t[11]) && !t[12])
|
|
|
1118 elt->private.special.text.size = i;
|
|
|
1119 else { /* oops */
|
|
|
1120 sprintf (tmp,"Unable to parse internal header elements at %ld: %s,%s;%s",
|
|
|
1121 curpos,(char *) LOCAL->buf,(char *) x,(char *) t);
|
|
|
1122 mm_log (tmp,ERROR);
|
|
|
1123 tenex_close (stream,NIL);
|
|
|
1124 return NIL;
|
|
|
1125 }
|
|
|
1126 /* make sure didn't run off end of file */
|
|
|
1127 if ((curpos += (elt->private.msg.full.text.size + i)) > sbuf.st_size) {
|
|
|
1128 sprintf (tmp,"Last message (at %lu) runs past end of file (%lu > %lu)",
|
|
|
1129 elt->private.special.offset,(unsigned long) curpos,
|
|
|
1130 (unsigned long) sbuf.st_size);
|
|
|
1131 mm_log (tmp,ERROR);
|
|
|
1132 tenex_close (stream,NIL);
|
|
|
1133 return NIL;
|
|
|
1134 }
|
|
|
1135 c = t[10]; /* remember first system flags byte */
|
|
|
1136 t[10] = '\0'; /* tie off flags */
|
|
|
1137 j = strtoul (t,NIL,8); /* get user flags value */
|
|
|
1138 t[10] = c; /* restore first system flags byte */
|
|
|
1139 /* set up all valid user flags (reversed!) */
|
|
|
1140 while (j) if (((i = 29 - find_rightmost_bit (&j)) < NUSERFLAGS) &&
|
|
|
1141 stream->user_flags[i]) elt->user_flags |= 1 << i;
|
|
|
1142 /* calculate system flags */
|
|
|
1143 if ((j = ((t[10]-'0') * 8) + t[11]-'0') & fSEEN) elt->seen = T;
|
|
|
1144 if (j & fDELETED) elt->deleted = T;
|
|
|
1145 if (j & fFLAGGED) elt->flagged = T;
|
|
|
1146 if (j & fANSWERED) elt->answered = T;
|
|
|
1147 if (j & fDRAFT) elt->draft = T;
|
|
|
1148 if (!(j & fOLD)) { /* newly arrived message? */
|
|
|
1149 elt->recent = T;
|
|
|
1150 recent++; /* count up a new recent message */
|
|
|
1151 /* mark it as old */
|
|
|
1152 tenex_update_status (stream,nmsgs,NIL);
|
|
|
1153 }
|
|
|
1154 }
|
|
|
1155 fsync (LOCAL->fd); /* make sure all the fOLD flags take */
|
|
|
1156 /* update parsed file size and time */
|
|
|
1157 LOCAL->filesize = sbuf.st_size;
|
|
|
1158 fstat (LOCAL->fd,&sbuf); /* get status again to ensure time is right */
|
|
|
1159 LOCAL->filetime = sbuf.st_mtime;
|
|
|
1160 if (added && !stream->rdonly){/* make sure atime updated */
|
|
|
1161 struct utimbuf times;
|
|
|
1162 times.actime = time (0);
|
|
|
1163 times.modtime = LOCAL->filetime;
|
|
|
1164 utime (stream->mailbox,×);
|
|
|
1165 }
|
|
|
1166 stream->silent = silent; /* can pass up events now */
|
|
|
1167 mail_exists (stream,nmsgs); /* notify upper level of new mailbox size */
|
|
|
1168 mail_recent (stream,recent); /* and of change in recent messages */
|
|
|
1169 return LONGT; /* return the winnage */
|
|
|
1170 }
|
|
|
1171
|
|
|
1172 /* Tenex get cache element with status updating from file
|
|
|
1173 * Accepts: MAIL stream
|
|
|
1174 * message number
|
|
|
1175 * Returns: cache element
|
|
|
1176 */
|
|
|
1177
|
|
|
1178 MESSAGECACHE *tenex_elt (MAILSTREAM *stream,unsigned long msgno)
|
|
|
1179 {
|
|
|
1180 MESSAGECACHE *elt = mail_elt (stream,msgno);
|
|
|
1181 struct { /* old flags */
|
|
|
1182 unsigned int seen : 1;
|
|
|
1183 unsigned int deleted : 1;
|
|
|
1184 unsigned int flagged : 1;
|
|
|
1185 unsigned int answered : 1;
|
|
|
1186 unsigned int draft : 1;
|
|
|
1187 unsigned long user_flags;
|
|
|
1188 } old;
|
|
|
1189 old.seen = elt->seen; old.deleted = elt->deleted; old.flagged = elt->flagged;
|
|
|
1190 old.answered = elt->answered; old.draft = elt->draft;
|
|
|
1191 old.user_flags = elt->user_flags;
|
|
|
1192 tenex_read_flags (stream,elt);
|
|
|
1193 if ((old.seen != elt->seen) || (old.deleted != elt->deleted) ||
|
|
|
1194 (old.flagged != elt->flagged) || (old.answered != elt->answered) ||
|
|
|
1195 (old.draft != elt->draft) || (old.user_flags != elt->user_flags))
|
|
|
1196 mm_flags (stream,msgno); /* let top level know */
|
|
|
1197 return elt;
|
|
|
1198 }
|
|
|
1199
|
|
|
1200
|
|
|
1201 /* Tenex read flags from file
|
|
|
1202 * Accepts: MAIL stream
|
|
|
1203 * Returns: cache element
|
|
|
1204 */
|
|
|
1205
|
|
|
1206 void tenex_read_flags (MAILSTREAM *stream,MESSAGECACHE *elt)
|
|
|
1207 {
|
|
|
1208 unsigned long i,j;
|
|
|
1209 /* noop if readonly and have valid flags */
|
|
|
1210 if (stream->rdonly && elt->valid) return;
|
|
|
1211 /* set the seek pointer */
|
|
|
1212 lseek (LOCAL->fd,(off_t) elt->private.special.offset +
|
|
|
1213 elt->private.special.text.size - 13,L_SET);
|
|
|
1214 /* read the new flags */
|
|
|
1215 if (read (LOCAL->fd,LOCAL->buf,12) < 0) {
|
|
|
1216 sprintf (LOCAL->buf,"Unable to read new status: %s",strerror (errno));
|
|
|
1217 fatal (LOCAL->buf);
|
|
|
1218 }
|
|
|
1219 /* calculate system flags */
|
|
|
1220 i = (((LOCAL->buf[10]-'0') * 8) + LOCAL->buf[11]-'0');
|
|
|
1221 elt->seen = i & fSEEN ? T : NIL; elt->deleted = i & fDELETED ? T : NIL;
|
|
|
1222 elt->flagged = i & fFLAGGED ? T : NIL;
|
|
|
1223 elt->answered = i & fANSWERED ? T : NIL; elt->draft = i & fDRAFT ? T : NIL;
|
|
|
1224 LOCAL->buf[10] = '\0'; /* tie off flags */
|
|
|
1225 j = strtoul(LOCAL->buf,NIL,8);/* get user flags value */
|
|
|
1226 /* set up all valid user flags (reversed!) */
|
|
|
1227 while (j) if (((i = 29 - find_rightmost_bit (&j)) < NUSERFLAGS) &&
|
|
|
1228 stream->user_flags[i]) elt->user_flags |= 1 << i;
|
|
|
1229 elt->valid = T; /* have valid flags now */
|
|
|
1230 }
|
|
|
1231
|
|
|
1232 /* Tenex update status string
|
|
|
1233 * Accepts: MAIL stream
|
|
|
1234 * message number
|
|
|
1235 * flag saying whether or not to sync
|
|
|
1236 */
|
|
|
1237
|
|
|
1238 void tenex_update_status (MAILSTREAM *stream,unsigned long msgno,long syncflag)
|
|
|
1239 {
|
|
|
1240 struct utimbuf times;
|
|
|
1241 struct stat sbuf;
|
|
|
1242 MESSAGECACHE *elt = mail_elt (stream,msgno);
|
|
|
1243 unsigned long j,k = 0;
|
|
|
1244 /* readonly */
|
|
|
1245 if (stream->rdonly || !elt->valid) tenex_read_flags (stream,elt);
|
|
|
1246 else { /* readwrite */
|
|
|
1247 j = elt->user_flags; /* get user flags */
|
|
|
1248 /* reverse bits (dontcha wish we had CIRC?) */
|
|
|
1249 while (j) k |= 1 << (29 - find_rightmost_bit (&j));
|
|
|
1250 /* print new flag string */
|
|
|
1251 sprintf (LOCAL->buf,"%010lo%02o",k,(unsigned)
|
|
|
1252 (fOLD + (fSEEN * elt->seen) + (fDELETED * elt->deleted) +
|
|
|
1253 (fFLAGGED * elt->flagged) + (fANSWERED * elt->answered) +
|
|
|
1254 (fDRAFT * elt->draft)));
|
|
|
1255 while (T) { /* get to that place in the file */
|
|
|
1256 lseek (LOCAL->fd,(off_t) elt->private.special.offset +
|
|
|
1257 elt->private.special.text.size - 13,L_SET);
|
|
|
1258 /* write new flags */
|
|
|
1259 if (write (LOCAL->fd,LOCAL->buf,12) > 0) break;
|
|
|
1260 mm_notify (stream,strerror (errno),WARN);
|
|
|
1261 mm_diskerror (stream,errno,T);
|
|
|
1262 }
|
|
|
1263 if (syncflag) { /* sync if requested */
|
|
|
1264 fsync (LOCAL->fd);
|
|
|
1265 fstat (LOCAL->fd,&sbuf); /* get new write time */
|
|
|
1266 times.modtime = LOCAL->filetime = sbuf.st_mtime;
|
|
|
1267 times.actime = time (0); /* make sure read is later */
|
|
|
1268 utime (stream->mailbox,×);
|
|
|
1269 }
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 /* Tenex locate header for a message
|
|
|
1274 * Accepts: MAIL stream
|
|
|
1275 * message number
|
|
|
1276 * pointer to returned header size
|
|
|
1277 * Returns: position of header in file
|
|
|
1278 */
|
|
|
1279
|
|
|
1280 unsigned long tenex_hdrpos (MAILSTREAM *stream,unsigned long msgno,
|
|
|
1281 unsigned long *size)
|
|
|
1282 {
|
|
|
1283 unsigned long siz;
|
|
|
1284 long i = 0;
|
|
|
1285 char c = '\0';
|
|
|
1286 char *s = NIL;
|
|
|
1287 MESSAGECACHE *elt = tenex_elt (stream,msgno);
|
|
|
1288 unsigned long ret = elt->private.special.offset +
|
|
|
1289 elt->private.special.text.size;
|
|
|
1290 unsigned long msiz = tenex_size (stream,msgno);
|
|
|
1291 /* is header size known? */
|
|
|
1292 if (!(*size = elt->private.msg.header.text.size)) {
|
|
|
1293 lseek (LOCAL->fd,ret,L_SET);/* get to header position */
|
|
|
1294 /* search message for LF LF */
|
|
|
1295 for (siz = 0; siz < msiz; siz++) {
|
|
|
1296 if (--i <= 0) /* read another buffer as necessary */
|
|
|
1297 read (LOCAL->fd,s = LOCAL->buf,i = min (msiz-siz,(long) MAILTMPLEN));
|
|
|
1298 /* two newline sequence? */
|
|
|
1299 if ((c == '\012') && (*s == '\012')) {
|
|
|
1300 /* yes, note for later */
|
|
|
1301 elt->private.msg.header.text.size = (*size = siz + 1);
|
|
|
1302 return ret; /* return to caller */
|
|
|
1303 }
|
|
|
1304 else c = *s++; /* next character */
|
|
|
1305 }
|
|
|
1306 /* header consumes entire message */
|
|
|
1307 elt->private.msg.header.text.size = *size = msiz;
|
|
|
1308 }
|
|
|
1309 return ret;
|
|
|
1310 }
|
