Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/imap/imap-fetch.c @ 2716:ca9d5d046f23 HEAD
If FETCH failed immediately, we sent back extra ")" line.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Sat, 09 Oct 2004 17:22:14 +0300 |
parents | f1e9f3ec8135 |
children | eef378c0c07d |
rev | line source |
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1 /* Copyright (C) 2002-2004 Timo Sirainen */ |
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2 |
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3 #include "common.h" |
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4 #include "buffer.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" |
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8 #include "message-send.h" |
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9 #include "message-size.h" |
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10 #include "imap-date.h" |
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11 #include "commands.h" |
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12 #include "imap-fetch.h" |
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13 #include "imap-util.h" |
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14 |
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15 #include <stdlib.h> |
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16 |
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17 const struct imap_fetch_handler default_handlers[7]; |
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18 static buffer_t *fetch_handlers = NULL; |
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19 |
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20 static int imap_fetch_handler_cmp(const void *p1, const void *p2) |
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21 { |
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22 const struct imap_fetch_handler *h1 = p1, *h2 = p2; |
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23 |
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24 return strcmp(h1->name, h2->name); |
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25 } |
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26 |
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27 void imap_fetch_handlers_register(const struct imap_fetch_handler *handlers, |
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28 size_t count) |
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29 { |
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30 void *data; |
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31 size_t size; |
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32 |
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33 if (fetch_handlers == NULL) |
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34 fetch_handlers = buffer_create_dynamic(default_pool, 128); |
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35 buffer_append(fetch_handlers, handlers, sizeof(*handlers) * count); |
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36 |
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37 data = buffer_get_modifyable_data(fetch_handlers, &size); |
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38 qsort(data, size / sizeof(*handlers), sizeof(*handlers), |
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39 imap_fetch_handler_cmp); |
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40 } |
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41 |
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42 static int imap_fetch_handler_bsearch(const void *name_p, const void *handler_p) |
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43 { |
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44 const char *name = name_p; |
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45 const struct imap_fetch_handler *h = handler_p; |
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46 int i; |
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47 |
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48 for (i = 0; h->name[i] != '\0'; i++) { |
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49 if (h->name[i] != name[i]) { |
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50 if (name[i] < 'A' || name[i] >= 'Z') |
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51 return -1; |
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52 return name[i] - h->name[i]; |
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53 } |
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54 } |
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55 |
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56 return name[i] < 'A' || name[i] >= 'Z' ? 0 : -1; |
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57 } |
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58 |
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59 int imap_fetch_init_handler(struct imap_fetch_context *ctx, const char *name, |
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60 struct imap_arg **args) |
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61 { |
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62 const struct imap_fetch_handler *handler; |
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63 |
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64 handler = bsearch(name, fetch_handlers->data, |
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65 fetch_handlers->used / |
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66 sizeof(struct imap_fetch_handler), |
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67 sizeof(struct imap_fetch_handler), |
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68 imap_fetch_handler_bsearch); |
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69 if (handler == NULL) { |
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70 client_send_command_error(ctx->client, |
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71 t_strconcat("Unknown command ", name, NULL)); |
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72 return FALSE; |
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73 } |
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74 |
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75 return handler->init(ctx, name, args); |
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76 } |
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77 |
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78 struct imap_fetch_context *imap_fetch_init(struct client *client) |
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79 { |
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80 struct imap_fetch_context *ctx; |
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81 |
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82 if (fetch_handlers == NULL) { |
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83 imap_fetch_handlers_register(default_handlers, |
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84 sizeof(default_handlers) / |
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85 sizeof(default_handlers[0])); |
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86 } |
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87 |
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88 ctx = p_new(client->cmd_pool, struct imap_fetch_context, 1); |
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89 ctx->client = client; |
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90 ctx->box = client->mailbox; |
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91 |
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92 ctx->cur_str = str_new(default_pool, 8192); |
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93 ctx->seen_flag.flags = MAIL_SEEN; |
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94 ctx->all_headers_buf = buffer_create_dynamic(client->cmd_pool, 128); |
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95 ctx->handlers = buffer_create_dynamic(client->cmd_pool, 128); |
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96 return ctx; |
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97 } |
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98 |
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99 void imap_fetch_add_handler(struct imap_fetch_context *ctx, |
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100 imap_fetch_handler_t *handler, void *context) |
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101 { |
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102 const struct imap_fetch_context_handler *handlers; |
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103 struct imap_fetch_context_handler h; |
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104 size_t i, size; |
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105 |
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106 if (context == NULL) { |
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107 /* don't allow duplicate handlers */ |
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108 handlers = buffer_get_data(ctx->handlers, &size); |
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109 size /= sizeof(*handlers); |
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110 |
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111 for (i = 0; i < size; i++) { |
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112 if (handlers[i].handler == handler && |
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113 handlers[i].context == NULL) |
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114 return; |
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115 } |
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116 } |
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117 |
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118 memset(&h, 0, sizeof(h)); |
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119 h.handler = handler; |
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120 h.context = context; |
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121 |
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122 buffer_append(ctx->handlers, &h, sizeof(h)); |
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123 } |
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124 |
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125 void imap_fetch_begin(struct imap_fetch_context *ctx, |
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126 struct mail_search_arg *search_arg) |
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127 { |
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128 const void *null = NULL; |
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129 const void *data; |
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130 |
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131 if (ctx->flags_update_seen) { |
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132 if (mailbox_is_readonly(ctx->box)) |
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133 ctx->flags_update_seen = FALSE; |
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134 else if (!ctx->flags_have_handler) { |
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135 ctx->flags_show_only_seen_changes = TRUE; |
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136 (void)imap_fetch_init_handler(ctx, "FLAGS", NULL); |
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137 } |
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138 } |
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139 |
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140 if (buffer_get_used_size(ctx->all_headers_buf) != 0 && |
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141 ((ctx->fetch_data & (MAIL_FETCH_STREAM_HEADER | |
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142 MAIL_FETCH_STREAM_BODY)) == 0)) { |
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143 buffer_append(ctx->all_headers_buf, &null, sizeof(null)); |
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144 |
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145 data = buffer_get_data(ctx->all_headers_buf, NULL); |
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146 ctx->all_headers_ctx = |
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147 mailbox_header_lookup_init(ctx->box, data); |
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148 } |
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149 |
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150 ctx->trans = mailbox_transaction_begin(ctx->box, TRUE); |
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151 ctx->select_counter = ctx->client->select_counter; |
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152 ctx->search_ctx = |
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153 mailbox_search_init(ctx->trans, NULL, search_arg, NULL, |
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154 ctx->fetch_data, ctx->all_headers_ctx); |
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155 ctx->line_finished = TRUE; |
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156 } |
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157 |
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158 int imap_fetch(struct imap_fetch_context *ctx) |
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159 { |
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160 const struct imap_fetch_context_handler *handlers; |
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161 size_t size; |
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162 int ret; |
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163 |
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164 if (ctx->cont_handler != NULL) { |
2640 | 165 if ((ret = ctx->cont_handler(ctx)) <= 0) |
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166 return ret; |
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167 |
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168 ctx->cont_handler = NULL; |
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169 ctx->cur_offset = 0; |
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170 ctx->cur_handler++; |
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171 } |
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172 |
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173 handlers = buffer_get_data(ctx->handlers, &size); |
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174 size /= sizeof(*handlers); |
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175 |
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176 for (;;) { |
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177 if (o_stream_get_buffer_used_size(ctx->client->output) >= |
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178 CLIENT_OUTPUT_OPTIMAL_SIZE) { |
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179 ret = o_stream_flush(ctx->client->output); |
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180 if (ret <= 0) |
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181 return ret; |
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182 } |
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183 |
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184 if (ctx->cur_mail == NULL) { |
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185 if (ctx->cur_input != NULL) { |
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186 i_stream_unref(ctx->cur_input); |
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187 ctx->cur_input = NULL; |
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188 } |
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189 |
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190 ctx->cur_mail = mailbox_search_next(ctx->search_ctx); |
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191 if (ctx->cur_mail == NULL) |
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192 break; |
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193 |
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194 str_printfa(ctx->cur_str, "* %u FETCH (", |
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195 ctx->cur_mail->seq); |
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196 if (o_stream_send(ctx->client->output, |
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197 str_data(ctx->cur_str), |
2640 | 198 str_len(ctx->cur_str)) < 0) |
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199 return -1; |
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200 |
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201 str_truncate(ctx->cur_str, 0); |
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202 str_append_c(ctx->cur_str, ' '); |
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203 ctx->first = TRUE; |
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204 ctx->line_finished = FALSE; |
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205 } |
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206 |
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207 for (; ctx->cur_handler < size; ctx->cur_handler++) { |
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208 t_push(); |
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209 ret = handlers[ctx->cur_handler]. |
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210 handler(ctx, ctx->cur_mail, |
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211 handlers[ctx->cur_handler].context); |
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212 t_pop(); |
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213 |
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214 if (ret <= 0) { |
2640 | 215 i_assert(ret < 0 || ctx->cont_handler != NULL); |
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216 return ret; |
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217 } |
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218 |
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219 ctx->cont_handler = NULL; |
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220 ctx->cur_offset = 0; |
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221 } |
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222 |
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223 if (str_len(ctx->cur_str) > 1) { |
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224 if (o_stream_send(ctx->client->output, |
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225 str_data(ctx->cur_str) + ctx->first, |
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226 str_len(ctx->cur_str) - 1 - |
2640 | 227 ctx->first) < 0) |
2421
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228 return -1; |
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229 str_truncate(ctx->cur_str, 0); |
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230 } |
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231 |
2680
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If fetching fails, finish sending the untagged FETCH reply correctly.
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232 ctx->line_finished = TRUE; |
2640 | 233 if (o_stream_send(ctx->client->output, ")\r\n", 3) < 0) |
2421
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234 return -1; |
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235 |
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236 ctx->cur_mail = NULL; |
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237 ctx->cur_handler = 0; |
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238 } |
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239 |
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240 return 1; |
988
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241 } |
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242 |
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243 int imap_fetch_deinit(struct imap_fetch_context *ctx) |
988
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244 { |
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245 str_free(ctx->cur_str); |
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246 |
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247 if (!ctx->line_finished) { |
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248 if (o_stream_send(ctx->client->output, ")\r\n", 3) < 0) |
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249 return -1; |
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250 } |
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251 |
2421
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252 if (ctx->cur_input != NULL) { |
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253 i_stream_unref(ctx->cur_input); |
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254 ctx->cur_input = NULL; |
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255 } |
988
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256 |
2421
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257 if (ctx->search_ctx != NULL) { |
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258 if (mailbox_search_deinit(ctx->search_ctx) < 0) |
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259 ctx->failed = TRUE; |
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260 } |
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261 if (ctx->all_headers_ctx != NULL) |
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262 mailbox_header_lookup_deinit(ctx->all_headers_ctx); |
988
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263 |
2421
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264 if (ctx->trans != NULL) { |
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265 if (ctx->failed) |
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266 mailbox_transaction_rollback(ctx->trans); |
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267 else { |
2518
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Added sync flags parameter to mailbox_transaction_commit(), so EXPUNGE can
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268 if (mailbox_transaction_commit(ctx->trans, 0) < 0) |
2421
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269 ctx->failed = TRUE; |
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270 } |
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271 } |
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272 return ctx->failed ? -1 : 0; |
988
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273 } |
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274 |
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275 static int fetch_body(struct imap_fetch_context *ctx, struct mail *mail, |
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276 void *context __attr_unused__) |
988
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|
277 { |
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278 const char *body; |
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279 |
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280 body = mail->get_special(mail, MAIL_FETCH_IMAP_BODY); |
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281 if (body == NULL) |
2421
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282 return -1; |
988
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|
283 |
2421
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284 if (ctx->first) |
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Write envelope, body and bodystructure directly into output stream.
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285 ctx->first = FALSE; |
2421
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286 else { |
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287 if (o_stream_send(ctx->client->output, " ", 1) < 0) |
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288 return -1; |
1764
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Write envelope, body and bodystructure directly into output stream.
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|
289 } |
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Write envelope, body and bodystructure directly into output stream.
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|
290 |
2421
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291 if (o_stream_send(ctx->client->output, "BODY (", 6) < 0 || |
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292 o_stream_send_str(ctx->client->output, body) < 0 || |
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293 o_stream_send(ctx->client->output, ")", 1) < 0) |
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294 return -1; |
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295 return 1; |
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296 } |
1764
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297 |
2675
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BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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298 static int fetch_body_init(struct imap_fetch_context *ctx, const char *name, |
60d33cf81c8e
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299 struct imap_arg **args) |
2421
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300 { |
2675
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BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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|
301 if (name[4] == '\0') { |
2421
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|
302 ctx->fetch_data |= MAIL_FETCH_IMAP_BODY; |
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303 imap_fetch_add_handler(ctx, fetch_body, NULL); |
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304 return TRUE; |
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305 } |
2675
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BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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|
306 return fetch_body_section_init(ctx, name, args); |
988
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diff
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|
307 } |
8028c4dcf38f
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diff
changeset
|
308 |
8028c4dcf38f
mail-storage.h interface changes, affects pretty much everything.
Timo Sirainen <tss@iki.fi>
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|
309 static int fetch_bodystructure(struct imap_fetch_context *ctx, |
2421
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|
310 struct mail *mail, void *context __attr_unused__) |
988
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|
311 { |
8028c4dcf38f
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|
312 const char *bodystructure; |
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mail-storage.h interface changes, affects pretty much everything.
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|
313 |
8028c4dcf38f
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|
314 bodystructure = mail->get_special(mail, MAIL_FETCH_IMAP_BODYSTRUCTURE); |
8028c4dcf38f
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diff
changeset
|
315 if (bodystructure == NULL) |
2421
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|
316 return -1; |
988
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mail-storage.h interface changes, affects pretty much everything.
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parents:
diff
changeset
|
317 |
2421
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|
318 if (ctx->first) |
1764
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Write envelope, body and bodystructure directly into output stream.
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|
319 ctx->first = FALSE; |
2421
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320 else { |
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|
321 if (o_stream_send(ctx->client->output, " ", 1) < 0) |
d141e1bfdd63
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|
322 return -1; |
1764
fbb28b07c60f
Write envelope, body and bodystructure directly into output stream.
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parents:
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diff
changeset
|
323 } |
fbb28b07c60f
Write envelope, body and bodystructure directly into output stream.
Timo Sirainen <tss@iki.fi>
parents:
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diff
changeset
|
324 |
2421
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325 if (o_stream_send(ctx->client->output, "BODYSTRUCTURE (", 15) < 0 || |
d141e1bfdd63
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|
326 o_stream_send_str(ctx->client->output, bodystructure) < 0 || |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
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|
327 o_stream_send(ctx->client->output, ")", 1) < 0) |
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We never do blocking reads/writes to network anymore. Changed imap and pop3
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|
328 return -1; |
1764
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Write envelope, body and bodystructure directly into output stream.
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|
329 |
2421
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330 return 1; |
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|
331 } |
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|
332 |
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|
333 static int fetch_bodystructure_init(struct imap_fetch_context *ctx, |
2675
60d33cf81c8e
BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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|
334 const char *name __attr_unused__, |
60d33cf81c8e
BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
Timo Sirainen <tss@iki.fi>
parents:
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changeset
|
335 struct imap_arg **args __attr_unused__) |
2421
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336 { |
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337 ctx->fetch_data |= MAIL_FETCH_IMAP_BODYSTRUCTURE; |
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338 imap_fetch_add_handler(ctx, fetch_bodystructure, NULL); |
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339 return TRUE; |
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340 } |
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341 |
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342 static int fetch_envelope(struct imap_fetch_context *ctx, struct mail *mail, |
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343 void *context __attr_unused__) |
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344 { |
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345 const char *envelope; |
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346 |
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347 envelope = mail->get_special(mail, MAIL_FETCH_IMAP_ENVELOPE); |
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348 if (envelope == NULL) |
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349 return -1; |
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350 |
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351 if (ctx->first) |
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352 ctx->first = FALSE; |
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353 else { |
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354 if (o_stream_send(ctx->client->output, " ", 1) < 0) |
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355 return -1; |
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356 } |
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357 |
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358 if (o_stream_send(ctx->client->output, "ENVELOPE (", 10) < 0 || |
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359 o_stream_send_str(ctx->client->output, envelope) < 0 || |
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360 o_stream_send(ctx->client->output, ")", 1) < 0) |
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361 return -1; |
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362 return 1; |
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363 } |
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364 |
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365 static int fetch_envelope_init(struct imap_fetch_context *ctx, |
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366 const char *name __attr_unused__, |
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367 struct imap_arg **args __attr_unused__) |
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368 { |
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369 ctx->fetch_data |= MAIL_FETCH_IMAP_ENVELOPE; |
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370 imap_fetch_add_handler(ctx, fetch_envelope, NULL); |
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371 return TRUE; |
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372 } |
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373 |
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374 static int fetch_flags(struct imap_fetch_context *ctx, struct mail *mail, |
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375 void *context __attr_unused__) |
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376 { |
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377 const struct mail_full_flags *flags; |
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378 struct mail_full_flags full_flags; |
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379 |
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380 flags = mail->get_flags(mail); |
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381 if (flags == NULL) |
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382 return -1; |
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383 |
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384 if (ctx->flags_update_seen && (flags->flags & MAIL_SEEN) == 0) { |
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385 /* Add \Seen flag */ |
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386 full_flags = *flags; |
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387 full_flags.flags |= MAIL_SEEN; |
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388 flags = &full_flags; |
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389 |
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390 if (mail->update_flags(mail, &ctx->seen_flag, MODIFY_ADD) < 0) |
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391 return -1; |
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392 } else if (ctx->flags_show_only_seen_changes) { |
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393 return 1; |
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394 } |
988
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395 |
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396 str_append(ctx->cur_str, "FLAGS ("); |
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397 imap_write_flags(ctx->cur_str, flags); |
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398 str_append(ctx->cur_str, ") "); |
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399 return 1; |
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400 } |
988
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parents:
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|
401 |
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402 static int fetch_flags_init(struct imap_fetch_context *ctx, |
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403 const char *name __attr_unused__, |
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BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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404 struct imap_arg **args __attr_unused__) |
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405 { |
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|
406 ctx->flags_have_handler = TRUE; |
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407 ctx->fetch_data |= MAIL_FETCH_FLAGS; |
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408 imap_fetch_add_handler(ctx, fetch_flags, NULL); |
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409 return TRUE; |
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410 } |
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Write envelope, body and bodystructure directly into output stream.
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|
411 |
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412 static int fetch_internaldate(struct imap_fetch_context *ctx, struct mail *mail, |
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413 void *context __attr_unused__) |
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414 { |
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|
415 time_t time; |
1926
982bd89b42fd
BYE if trying to fetch body[] of expunged message.
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1915
diff
changeset
|
416 |
2421
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417 time = mail->get_received_date(mail); |
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418 if (time == (time_t)-1) |
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419 return -1; |
988
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|
420 |
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421 str_printfa(ctx->cur_str, "INTERNALDATE \"%s\" ", |
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|
422 imap_to_datetime(time)); |
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|
423 return 1; |
988
8028c4dcf38f
mail-storage.h interface changes, affects pretty much everything.
Timo Sirainen <tss@iki.fi>
parents:
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changeset
|
424 } |
8028c4dcf38f
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Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
425 |
1638
e95c0e462591
API change for updating message flags.
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changeset
|
426 |
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|
427 static int fetch_internaldate_init(struct imap_fetch_context *ctx, |
2675
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|
428 const char *name __attr_unused__, |
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BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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|
429 struct imap_arg **args __attr_unused__) |
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430 { |
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|
431 ctx->fetch_data |= MAIL_FETCH_RECEIVED_DATE; |
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432 imap_fetch_add_handler(ctx, fetch_internaldate, NULL); |
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433 return TRUE; |
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|
434 } |
988
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mail-storage.h interface changes, affects pretty much everything.
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parents:
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changeset
|
435 |
2421
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|
436 static int fetch_uid(struct imap_fetch_context *ctx, struct mail *mail, |
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|
437 void *context __attr_unused__) |
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|
438 { |
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|
439 str_printfa(ctx->cur_str, "UID %u ", mail->uid); |
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|
440 return 1; |
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Timo Sirainen <tss@iki.fi>
parents:
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changeset
|
441 } |
988
8028c4dcf38f
mail-storage.h interface changes, affects pretty much everything.
Timo Sirainen <tss@iki.fi>
parents:
diff
changeset
|
442 |
2421
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|
443 static int fetch_uid_init(struct imap_fetch_context *ctx __attr_unused__, |
2675
60d33cf81c8e
BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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|
444 const char *name __attr_unused__, |
60d33cf81c8e
BODY.PEEK[HEADER.FIELDS (...)] list is allowed to contain strings and
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parents:
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diff
changeset
|
445 struct imap_arg **args __attr_unused__) |
2421
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|
446 { |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
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447 imap_fetch_add_handler(ctx, fetch_uid, NULL); |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
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diff
changeset
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448 return TRUE; |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
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449 } |
1672
8920600a8cfc
Index cache file rewrite. It's not finished yet and mbox support is
Timo Sirainen <tss@iki.fi>
parents:
1642
diff
changeset
|
450 |
2421
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
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451 const struct imap_fetch_handler default_handlers[7] = { |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
452 { "BODY", fetch_body_init }, |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
453 { "BODYSTRUCTURE", fetch_bodystructure_init }, |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
454 { "ENVELOPE", fetch_envelope_init }, |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
455 { "FLAGS", fetch_flags_init }, |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
456 { "INTERNALDATE", fetch_internaldate_init }, |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
457 { "RFC822", fetch_rfc822_init }, |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
458 { "UID", fetch_uid_init } |
d141e1bfdd63
We never do blocking reads/writes to network anymore. Changed imap and pop3
Timo Sirainen <tss@iki.fi>
parents:
2327
diff
changeset
|
459 }; |