Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/imap/cmd-append.c @ 4907:5b4c9b20eba0 HEAD
Replaced void *context from a lot of callbacks with the actual context
type. Also added/fixed some context type checks.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Fri, 15 Dec 2006 20:38:08 +0200 |
parents | 204d7edc7cdc |
children | ff2272c228cc |
rev | line source |
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0 | 1 /* Copyright (C) 2002 Timo Sirainen */ |
2 | |
3 #include "common.h" | |
117 | 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 "str.h" |
0 | 8 #include "commands.h" |
9 #include "imap-parser.h" | |
119
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10 #include "imap-date.h" |
1041 | 11 #include "mail-storage.h" |
0 | 12 |
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13 #include <sys/time.h> |
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14 |
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15 struct cmd_append_context { |
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16 struct client *client; |
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17 struct client_command_context *cmd; |
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18 struct mail_storage *storage; |
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19 struct mailbox *box; |
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20 struct mailbox_transaction_context *t; |
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21 |
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22 struct istream *input; |
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23 uoff_t msg_size; |
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24 |
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25 struct imap_parser *save_parser; |
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26 struct mail_save_context *save_ctx; |
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27 }; |
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28 |
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29 static void cmd_append_finish(struct cmd_append_context *ctx); |
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30 static bool cmd_append_continue_message(struct client_command_context *cmd); |
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31 |
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32 static void client_input(struct client *client) |
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33 { |
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34 struct client_command_context *cmd = &client->cmd; |
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35 |
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36 client->last_input = ioloop_time; |
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37 |
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38 switch (i_stream_read(client->input)) { |
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39 case -1: |
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40 /* disconnected */ |
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41 cmd_append_finish(cmd->context); |
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42 /* Reset command so that client_destroy() doesn't try to call |
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43 cmd_append_continue_message() anymore. */ |
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44 _client_reset_command(client); |
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45 client_destroy(client, "Disconnected in APPEND"); |
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46 return; |
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47 case -2: |
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48 cmd_append_finish(cmd->context); |
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49 if (client->command_pending) { |
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50 /* message data, this is handled internally by |
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51 mailbox_save_continue() */ |
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52 break; |
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53 } |
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54 |
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55 /* parameter word is longer than max. input buffer size. |
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56 this is most likely an error, so skip the new data |
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57 until newline is found. */ |
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58 client->input_skip_line = TRUE; |
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59 |
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60 client_send_command_error(cmd, "Too long argument."); |
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61 _client_reset_command(client); |
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62 return; |
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63 } |
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64 |
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65 if (cmd->func(cmd)) { |
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66 /* command execution was finished. Note that if cmd_sync() |
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67 didn't finish, we didn't get here but the input handler |
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68 has already been moved. So don't do anything important |
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69 here.. |
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70 |
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71 reset command once again to reset cmd_sync()'s changes. */ |
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72 _client_reset_command(client); |
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73 |
2460 | 74 if (client->input_pending) |
75 _client_input(client); | |
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76 } |
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77 } |
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78 |
0 | 79 /* Returns -1 = error, 0 = need more data, 1 = successful. flags and |
80 internal_date may be NULL as a result, but mailbox and msg_size are always | |
81 set when successful. */ | |
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82 static int validate_args(struct imap_arg *args, struct imap_arg_list **flags, |
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83 const char **internal_date, uoff_t *msg_size, |
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84 bool *nonsync) |
0 | 85 { |
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86 /* [<flags>] */ |
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87 if (args->type != IMAP_ARG_LIST) |
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88 *flags = NULL; |
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89 else { |
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90 *flags = IMAP_ARG_LIST(args); |
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91 args++; |
0 | 92 } |
93 | |
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94 /* [<internal date>] */ |
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95 if (args->type != IMAP_ARG_STRING) |
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96 *internal_date = NULL; |
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97 else { |
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98 *internal_date = IMAP_ARG_STR(args); |
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99 args++; |
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100 } |
0 | 101 |
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102 if (args->type != IMAP_ARG_LITERAL_SIZE && |
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103 args->type != IMAP_ARG_LITERAL_SIZE_NONSYNC) { |
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104 *nonsync = FALSE; |
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105 return FALSE; |
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106 } |
0 | 107 |
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108 *nonsync = args->type == IMAP_ARG_LITERAL_SIZE_NONSYNC; |
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109 *msg_size = IMAP_ARG_LITERAL_SIZE(args); |
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110 return TRUE; |
0 | 111 } |
112 | |
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113 static void cmd_append_finish(struct cmd_append_context *ctx) |
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114 { |
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115 io_remove(&ctx->client->io); |
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116 |
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117 imap_parser_destroy(&ctx->save_parser); |
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118 |
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119 if (ctx->input != NULL) |
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120 i_stream_unref(&ctx->input); |
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121 |
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122 if (ctx->save_ctx != NULL) |
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123 mailbox_save_cancel(&ctx->save_ctx); |
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124 |
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125 if (ctx->t != NULL) |
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126 mailbox_transaction_rollback(&ctx->t); |
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127 |
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128 if (ctx->box != ctx->cmd->client->mailbox && ctx->box != NULL) |
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129 mailbox_close(&ctx->box); |
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130 |
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131 ctx->client->bad_counter = 0; |
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132 o_stream_set_flush_callback(ctx->client->output, |
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133 _client_output, ctx->client); |
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134 } |
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135 |
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136 static bool cmd_append_continue_cancel(struct client_command_context *cmd) |
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137 { |
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138 struct cmd_append_context *ctx = cmd->context; |
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139 size_t size; |
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140 |
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141 (void)i_stream_read(ctx->input); |
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142 (void)i_stream_get_data(ctx->input, &size); |
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143 i_stream_skip(ctx->input, size); |
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144 |
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145 if (ctx->input->v_offset == ctx->msg_size || |
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146 cmd->client->input->closed) { |
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147 cmd_append_finish(ctx); |
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148 return TRUE; |
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149 } |
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150 return FALSE; |
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151 } |
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152 |
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153 static bool cmd_append_cancel(struct cmd_append_context *ctx, bool nonsync) |
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154 { |
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155 if (!nonsync) { |
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156 cmd_append_finish(ctx); |
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157 return TRUE; |
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158 } |
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159 |
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160 /* we have to read the nonsynced literal so we don't treat the message |
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161 data as commands. */ |
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162 ctx->input = i_stream_create_limit(default_pool, ctx->client->input, |
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163 ctx->client->input->v_offset, |
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164 ctx->msg_size); |
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165 |
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166 ctx->client->command_pending = TRUE; |
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167 ctx->cmd->func = cmd_append_continue_cancel; |
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168 ctx->cmd->context = ctx; |
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169 return cmd_append_continue_cancel(ctx->cmd); |
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170 } |
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171 |
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172 static bool cmd_append_continue_parsing(struct client_command_context *cmd) |
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173 { |
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174 struct client *client = cmd->client; |
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175 struct cmd_append_context *ctx = cmd->context; |
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176 struct imap_arg *args; |
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177 struct imap_arg_list *flags_list; |
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178 enum mail_flags flags; |
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179 const char *const *keywords_list; |
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180 struct mail_keywords *keywords; |
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181 const char *internal_date_str; |
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182 time_t internal_date; |
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183 int ret, timezone_offset; |
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184 bool nonsync; |
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185 |
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186 /* if error occurs, the CRLF is already read. */ |
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187 client->input_skip_line = FALSE; |
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188 |
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189 /* [<flags>] [<internal date>] <message literal> */ |
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190 ret = imap_parser_read_args(ctx->save_parser, 0, |
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191 IMAP_PARSE_FLAG_LITERAL_SIZE, &args); |
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192 if (ret == -1) { |
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193 if (ctx->box != NULL) |
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194 client_send_command_error(cmd, NULL); |
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195 cmd_append_finish(ctx); |
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196 return TRUE; |
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197 } |
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198 if (ret < 0) { |
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199 /* need more data */ |
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200 return FALSE; |
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201 } |
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202 |
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203 if (args->type == IMAP_ARG_EOL) { |
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204 /* last message */ |
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205 enum mailbox_sync_flags sync_flags; |
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206 |
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207 /* eat away the trailing CRLF */ |
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208 client->input_skip_line = TRUE; |
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209 |
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210 if (ctx->box == NULL) { |
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211 /* we failed earlier, error message is sent */ |
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212 cmd_append_finish(ctx); |
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213 return TRUE; |
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214 } |
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215 |
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216 ret = mailbox_transaction_commit(&ctx->t, 0); |
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217 if (ret < 0) { |
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218 client_send_storage_error(cmd, ctx->storage); |
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219 cmd_append_finish(ctx); |
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220 return TRUE; |
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221 } |
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222 |
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223 sync_flags = ctx->box == cmd->client->mailbox ? |
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224 0 : MAILBOX_SYNC_FLAG_FAST; |
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225 |
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226 cmd_append_finish(ctx); |
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227 return cmd_sync(cmd, sync_flags, 0, "OK Append completed."); |
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228 } |
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229 |
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230 if (!validate_args(args, &flags_list, &internal_date_str, |
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231 &ctx->msg_size, &nonsync)) { |
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232 client_send_command_error(cmd, "Invalid arguments."); |
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233 return cmd_append_cancel(ctx, nonsync); |
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234 } |
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235 |
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236 if (ctx->box == NULL) { |
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237 /* we failed earlier, make sure we just eat nonsync-literal |
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238 if it's given. */ |
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239 return cmd_append_cancel(ctx, nonsync); |
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240 } |
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241 |
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242 if (flags_list != NULL) { |
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243 if (!client_parse_mail_flags(cmd, flags_list->args, |
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244 &flags, &keywords_list)) |
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245 return cmd_append_cancel(ctx, nonsync); |
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246 keywords = keywords_list == NULL ? NULL : |
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247 mailbox_keywords_create(ctx->t, keywords_list); |
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248 } else { |
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249 flags = 0; |
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250 keywords = NULL; |
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251 } |
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252 |
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253 if (internal_date_str == NULL) { |
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254 /* no time given, default to now. */ |
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255 internal_date = (time_t)-1; |
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256 timezone_offset = 0; |
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257 } else if (!imap_parse_datetime(internal_date_str, |
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258 &internal_date, &timezone_offset)) { |
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259 client_send_tagline(cmd, "BAD Invalid internal date."); |
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260 return cmd_append_cancel(ctx, nonsync); |
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261 } |
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262 |
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263 if (ctx->msg_size == 0) { |
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264 /* no message data, abort */ |
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265 client_send_tagline(cmd, "NO Append aborted."); |
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266 cmd_append_finish(ctx); |
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267 return TRUE; |
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268 } |
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269 |
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270 /* save the mail */ |
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271 ctx->input = i_stream_create_limit(default_pool, client->input, |
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272 client->input->v_offset, |
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273 ctx->msg_size); |
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274 ret = mailbox_save_init(ctx->t, flags, keywords, |
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275 internal_date, timezone_offset, NULL, |
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276 ctx->input, FALSE, &ctx->save_ctx); |
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277 |
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278 if (keywords != NULL) |
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279 mailbox_keywords_free(ctx->t, &keywords); |
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280 |
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281 if (ret < 0) { |
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282 /* save initialization failed */ |
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283 client_send_storage_error(cmd, ctx->storage); |
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284 return cmd_append_cancel(ctx, nonsync); |
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285 } |
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286 |
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287 /* after literal comes CRLF, if we fail make sure we eat it away */ |
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288 client->input_skip_line = TRUE; |
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289 |
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290 if (!nonsync) { |
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291 o_stream_send(client->output, "+ OK\r\n", 6); |
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292 o_stream_flush(client->output); |
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293 o_stream_uncork(client->output); |
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294 } |
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295 |
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296 client->command_pending = TRUE; |
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297 cmd->func = cmd_append_continue_message; |
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298 return cmd_append_continue_message(cmd); |
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299 } |
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300 |
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301 static bool cmd_append_continue_message(struct client_command_context *cmd) |
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302 { |
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303 struct client *client = cmd->client; |
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304 struct cmd_append_context *ctx = cmd->context; |
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305 size_t size; |
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306 bool failed; |
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307 |
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308 if (ctx->save_ctx != NULL) { |
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309 if (mailbox_save_continue(ctx->save_ctx) < 0) { |
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310 /* we still have to finish reading the message |
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311 from client */ |
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312 mailbox_save_cancel(&ctx->save_ctx); |
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313 } |
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314 } |
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315 |
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316 if (ctx->save_ctx == NULL) { |
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317 (void)i_stream_read(ctx->input); |
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318 (void)i_stream_get_data(ctx->input, &size); |
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319 i_stream_skip(ctx->input, size); |
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320 } |
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321 |
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322 if (ctx->input->eof || client->input->closed) { |
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323 /* finished */ |
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324 bool all_written = ctx->input->v_offset == ctx->msg_size; |
3443 | 325 |
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326 i_stream_unref(&ctx->input); |
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327 ctx->input = NULL; |
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328 |
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329 if (ctx->save_ctx == NULL) { |
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330 /* failed above */ |
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331 client_send_storage_error(cmd, ctx->storage); |
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332 failed = TRUE; |
3443 | 333 } else if (!all_written) { |
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334 /* client disconnected before it finished sending the |
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335 whole message. */ |
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336 failed = TRUE; |
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337 mailbox_save_cancel(&ctx->save_ctx); |
4287 | 338 } else if (mailbox_save_finish(&ctx->save_ctx) < 0) { |
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339 failed = TRUE; |
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340 client_send_storage_error(cmd, ctx->storage); |
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341 } else { |
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342 failed = client->input->closed; |
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343 } |
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344 ctx->save_ctx = NULL; |
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345 |
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346 if (failed) { |
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347 cmd_append_finish(ctx); |
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348 return TRUE; |
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349 } |
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350 |
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351 /* prepare for next message */ |
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352 client->command_pending = FALSE; |
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353 imap_parser_reset(ctx->save_parser); |
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354 cmd->func = cmd_append_continue_parsing; |
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355 return cmd_append_continue_parsing(cmd); |
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356 } |
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357 |
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358 return FALSE; |
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359 } |
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360 |
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361 static struct mailbox * |
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362 get_mailbox(struct client_command_context *cmd, const char *name) |
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363 { |
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364 struct mail_storage *storage; |
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365 struct mailbox *box; |
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366 |
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367 if (!client_verify_mailbox_name(cmd, name, TRUE, FALSE)) |
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368 return NULL; |
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369 |
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370 storage = client_find_storage(cmd, &name); |
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371 if (storage == NULL) |
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372 return NULL; |
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373 |
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374 if (cmd->client->mailbox != NULL && |
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375 mailbox_equals(cmd->client->mailbox, storage, name)) |
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376 return cmd->client->mailbox; |
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377 |
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378 box = mailbox_open(storage, name, NULL, MAILBOX_OPEN_SAVEONLY | |
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379 MAILBOX_OPEN_FAST | MAILBOX_OPEN_KEEP_RECENT); |
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380 if (box == NULL) { |
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381 client_send_storage_error(cmd, storage); |
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382 return NULL; |
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383 } |
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384 return box; |
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385 } |
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386 |
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387 bool cmd_append(struct client_command_context *cmd) |
0 | 388 { |
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389 struct client *client = cmd->client; |
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390 struct cmd_append_context *ctx; |
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391 struct mailbox_status status; |
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392 const char *mailbox; |
0 | 393 |
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394 /* <mailbox> */ |
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395 if (!client_read_string_args(cmd, 1, &mailbox)) |
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396 return FALSE; |
0 | 397 |
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398 ctx = p_new(cmd->pool, struct cmd_append_context, 1); |
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399 ctx->cmd = cmd; |
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400 ctx->client = client; |
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401 ctx->box = get_mailbox(cmd, mailbox); |
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402 if (ctx->box != NULL) { |
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403 ctx->storage = mailbox_get_storage(ctx->box); |
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404 |
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405 if (mailbox_get_status(ctx->box, STATUS_KEYWORDS, |
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406 &status) < 0) { |
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407 client_send_storage_error(cmd, ctx->storage); |
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408 mailbox_close(&ctx->box); |
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409 } else { |
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410 client_save_keywords(&client->keywords, |
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411 status.keywords); |
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412 } |
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413 ctx->t = ctx->box == NULL ? NULL : |
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414 mailbox_transaction_begin(ctx->box, |
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415 MAILBOX_TRANSACTION_FLAG_EXTERNAL); |
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416 } |
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417 |
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418 io_remove(&client->io); |
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419 client->io = io_add(i_stream_get_fd(client->input), IO_READ, |
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420 client_input, client); |
2878 | 421 /* append is special because we're only waiting on client input, not |
422 client output, so disable the standard output handler until we're | |
423 finished */ | |
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424 o_stream_unset_flush_callback(client->output); |
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425 |
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426 ctx->save_parser = imap_parser_create(client->input, client->output, |
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427 imap_max_line_length); |
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428 |
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429 cmd->func = cmd_append_continue_parsing; |
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430 cmd->context = ctx; |
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431 return cmd_append_continue_parsing(cmd); |
0 | 432 } |