Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/imap/cmd-append.c @ 1023:dc660f588218 HEAD

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Disconnect client if given non-sync literal size is too large. Better than eating the input.
author Timo Sirainen <tss@iki.fi>
date Thu, 23 Jan 2003 05:28:46 +0200
parents 09bac2875ed8
children 47ecd950a702
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* Copyright (C) 2002 Timo Sirainen */
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2
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3 #include "common.h"
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4 #include "ioloop.h"
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5 #include "istream.h"
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6 #include "ostream.h"
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7 #include "commands.h"
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8 #include "imap-parser.h"
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9 #include "imap-date.h"
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10
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11 #include <sys/time.h>
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12
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13 /* Returns -1 = error, 0 = need more data, 1 = successful. flags and
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14 internal_date may be NULL as a result, but mailbox and msg_size are always
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15 set when successful. */
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16 static int validate_args(struct imap_arg *args, struct imap_arg_list **flags,
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17 const char **internal_date, uoff_t *msg_size,
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18 int *nonsync)
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19 {
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20 /* [<flags>] */
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21 if (args->type != IMAP_ARG_LIST)
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22 *flags = NULL;
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23 else {
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24 *flags = IMAP_ARG_LIST(args);
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25 args++;
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26 }
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27
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28 /* [<internal date>] */
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29 if (args->type != IMAP_ARG_STRING)
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30 *internal_date = NULL;
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31 else {
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32 *internal_date = IMAP_ARG_STR(args);
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33 args++;
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34 }
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35
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36 if (args->type != IMAP_ARG_LITERAL_SIZE &&
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37 args->type != IMAP_ARG_LITERAL_SIZE_NONSYNC)
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38 return FALSE;
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39
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40 *nonsync = args->type == IMAP_ARG_LITERAL_SIZE_NONSYNC;
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41 *msg_size = IMAP_ARG_LITERAL_SIZE(args);
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42 return TRUE;
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43 }
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44
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45 int cmd_append(struct client *client)
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46 {
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47 struct mailbox *box;
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48 struct mail_save_context *ctx;
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49 struct imap_parser *save_parser;
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50 struct imap_arg *args;
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51 struct imap_arg_list *flags_list;
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52 struct mail_full_flags flags;
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53 time_t internal_date;
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54 const char *mailbox, *internal_date_str, *error;
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55 uoff_t msg_size;
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56 unsigned int count;
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57 int ret, failed, timezone_offset, nonsync, fatal_error;
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58
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59 /* <mailbox> */
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60 if (!client_read_string_args(client, 1, &mailbox))
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61 return FALSE;
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62
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63 if (!client_verify_mailbox_name(client, mailbox, TRUE, FALSE))
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64 return TRUE;
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65
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66 box = client->storage->open_mailbox(client->storage,
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67 mailbox, FALSE, TRUE);
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68 if (box == NULL) {
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69 client_send_storage_error(client);
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70 return TRUE;
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71 }
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72
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73 ctx = box->save_init(box, TRUE);
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74 if (ctx == NULL) {
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75 client_send_storage_error(client);
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76 return TRUE;
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77 }
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78
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79 /* if error occurs, the CRLF is already read. */
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80 client->input_skip_line = FALSE;
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81
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82 count = 0;
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83 failed = TRUE;
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84 save_parser = imap_parser_create(client->input, client->output,
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85 0, MAX_IMAP_ARG_ELEMENTS);
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86
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87 for (;;) {
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88 /* [<flags>] [<internal date>] <message literal> */
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89 imap_parser_reset(save_parser);
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90 for (;;) {
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91 ret = imap_parser_read_args(save_parser, 0,
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92 IMAP_PARSE_FLAG_LITERAL_SIZE,
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93 &args);
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94 if (ret >= 0)
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95 break;
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96 if (ret == -1) {
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97 error = imap_parser_get_error(save_parser,
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98 &fatal_error);
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99 if (fatal_error) {
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100 client_disconnect_with_error(client,
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101 error);
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102 } else {
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103 client_send_command_error(client,
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104 error);
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105 }
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106 break;
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107 }
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108
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109 /* need more data */
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110 ret = i_stream_read(client->input);
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111 if (ret == -2) {
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112 client_send_command_error(client,
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113 "Too long argument.");
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114 break;
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115 }
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116 if (ret < 0) {
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117 /* disconnected */
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118 client->cmd_error = TRUE;
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119 break;
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120 }
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121 }
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122
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123 if (client->cmd_error)
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124 break;
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125
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126 if (args->type == IMAP_ARG_EOL) {
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127 /* last one */
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128 if (count > 0)
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129 failed = FALSE;
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130 client->input_skip_line = TRUE;
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131 break;
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132 }
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133
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134 if (!validate_args(args, &flags_list, &internal_date_str,
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135 &msg_size, &nonsync)) {
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136 /* error */
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137 client_send_command_error(client, "Invalid arguments.");
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138 break;
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139 }
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140
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141 if (flags_list != NULL) {
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142 if (!client_parse_mail_flags(client, flags_list->args,
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143 &flags))
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144 break;
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145 } else {
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146 memset(&flags, 0, sizeof(flags));
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147 }
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148
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149 if (internal_date_str == NULL) {
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150 /* no time given, default to now. */
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151 internal_date = ioloop_time;
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152 timezone_offset = ioloop_timezone.tz_minuteswest;
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153 } else if (!imap_parse_datetime(internal_date_str,
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154 &internal_date,
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155 &timezone_offset)) {
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156 client_send_tagline(client,
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157 "BAD Invalid internal date.");
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158 break;
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159 }
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160
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161 if (msg_size == 0) {
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162 /* no message data, abort */
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163 client_send_tagline(client, "NO Append aborted.");
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164 break;
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165 }
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166
1022
09bac2875ed8 Support for LITERAL+ extension.
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167 if (!nonsync) {
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168 o_stream_send(client->output, "+ OK\r\n", 6);
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169 o_stream_flush(client->output);
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170 }
1015
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171
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172 /* save the mail */
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173 i_stream_set_read_limit(client->input,
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174 client->input->v_offset + msg_size);
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175 if (!box->save_next(ctx, &flags, internal_date,
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176 timezone_offset, client->input)) {
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177 client_send_storage_error(client);
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178 break;
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179 }
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180 i_stream_set_read_limit(client->input, 0);
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181
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182 if (client->input->closed)
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183 break;
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184
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185 count++;
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186 }
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187
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188 if (!box->save_deinit(ctx, failed)) {
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189 failed = TRUE;
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190 client_send_storage_error(client);
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191 }
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192
450
925d6eb5f8be MailStorage interface change. We now let storage call several sync-functions
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diff changeset
193 box->close(box);
0
3b1985cbc908 Initial revision
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diff changeset
194
1015
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diff changeset
195 if (!failed) {
450
925d6eb5f8be MailStorage interface change. We now let storage call several sync-functions
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diff changeset
196 client_sync_full(client);
237
06d6eca0a45f Fixes for no diskspace handling. seems to work now.
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diff changeset
197 client_send_tagline(client, "OK Append completed.");
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diff changeset
198 }
0
3b1985cbc908 Initial revision
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199 return TRUE;
3b1985cbc908 Initial revision
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200 }