Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/imap/imap-fetch.c @ 1534:676995d7c0ca HEAD
IMAP protocol doesn't allow server to send NULs to client. Send ascii #128
instead.
author | Timo Sirainen <tss@iki.fi> |
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date | Wed, 04 Jun 2003 18:57:58 +0300 |
parents | e0dbaabbc22b |
children | e95c0e462591 |
rev | line source |
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988
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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 "istream.h" |
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5 #include "ostream.h" |
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6 #include "str.h" |
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7 #include "message-send.h" |
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8 #include "message-size.h" |
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9 #include "imap-date.h" |
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10 #include "commands.h" |
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11 #include "imap-fetch.h" |
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12 |
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13 #include <unistd.h> |
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14 |
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15 static void fetch_uid(struct imap_fetch_context *ctx, struct mail *mail) |
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16 { |
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17 str_printfa(ctx->str, "UID %u ", mail->uid); |
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18 } |
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19 |
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20 static int fetch_flags(struct imap_fetch_context *ctx, struct mail *mail) |
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21 { |
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22 const struct mail_full_flags *flags; |
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23 |
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24 flags = mail->get_flags(mail); |
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25 if (flags == NULL) |
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26 return FALSE; |
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27 |
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28 str_printfa(ctx->str, "FLAGS (%s) ", |
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29 imap_write_flags(flags->flags, flags->custom_flags, |
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30 flags->custom_flags_count)); |
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31 return TRUE; |
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32 } |
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33 |
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34 static int fetch_internaldate(struct imap_fetch_context *ctx, struct mail *mail) |
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35 { |
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36 time_t time; |
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37 |
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38 time = mail->get_received_date(mail); |
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39 if (time == (time_t)-1) |
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40 return FALSE; |
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41 |
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42 str_printfa(ctx->str, "INTERNALDATE \"%s\" ", imap_to_datetime(time)); |
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43 return TRUE; |
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44 } |
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45 |
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46 static int fetch_rfc822_size(struct imap_fetch_context *ctx, struct mail *mail) |
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47 { |
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48 uoff_t size; |
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49 |
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50 size = mail->get_size(mail); |
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51 if (size == (uoff_t)-1) |
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52 return FALSE; |
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53 |
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54 str_printfa(ctx->str, "RFC822.SIZE %"PRIuUOFF_T" ", size); |
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55 return TRUE; |
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56 } |
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57 |
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58 static int fetch_body(struct imap_fetch_context *ctx, struct mail *mail) |
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59 { |
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60 const char *body; |
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61 |
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62 body = mail->get_special(mail, MAIL_FETCH_IMAP_BODY); |
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63 if (body == NULL) |
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64 return FALSE; |
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65 |
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66 str_printfa(ctx->str, "BODY (%s) ", body); |
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67 return TRUE; |
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68 } |
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69 |
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70 static int fetch_bodystructure(struct imap_fetch_context *ctx, |
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71 struct mail *mail) |
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72 { |
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73 const char *bodystructure; |
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74 |
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75 bodystructure = mail->get_special(mail, MAIL_FETCH_IMAP_BODYSTRUCTURE); |
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76 if (bodystructure == NULL) |
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77 return FALSE; |
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78 |
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79 str_printfa(ctx->str, "BODYSTRUCTURE (%s) ", bodystructure); |
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80 return TRUE; |
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81 } |
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82 |
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83 static int fetch_envelope(struct imap_fetch_context *ctx, struct mail *mail) |
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84 { |
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85 const char *envelope; |
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86 |
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87 envelope = mail->get_special(mail, MAIL_FETCH_IMAP_ENVELOPE); |
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88 if (envelope == NULL) |
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89 return FALSE; |
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90 |
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91 str_printfa(ctx->str, "ENVELOPE (%s) ", envelope); |
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92 return TRUE; |
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93 } |
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94 |
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95 static int fetch_send_rfc822(struct imap_fetch_context *ctx, struct mail *mail) |
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96 { |
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97 struct message_size hdr_size, body_size; |
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98 struct istream *stream; |
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99 const char *str; |
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100 |
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101 stream = mail->get_stream(mail, &hdr_size, &body_size); |
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102 if (stream == NULL) |
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103 return FALSE; |
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104 |
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105 message_size_add(&body_size, &hdr_size); |
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106 |
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107 str = t_strdup_printf(" RFC822 {%"PRIuUOFF_T"}\r\n", |
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108 body_size.virtual_size); |
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109 if (ctx->first) { |
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110 str++; ctx->first = FALSE; |
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111 } |
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112 if (o_stream_send_str(ctx->output, str) < 0) |
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113 return FALSE; |
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114 |
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115 return message_send(ctx->output, stream, &body_size, |
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116 0, (uoff_t)-1, NULL, !mail->has_no_nuls) >= 0; |
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117 } |
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118 |
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119 static int fetch_send_rfc822_header(struct imap_fetch_context *ctx, |
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120 struct mail *mail) |
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121 { |
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122 struct message_size hdr_size; |
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123 struct istream *stream; |
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124 const char *str; |
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125 |
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126 stream = mail->get_stream(mail, &hdr_size, NULL); |
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127 if (stream == NULL) |
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128 return FALSE; |
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129 |
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130 str = t_strdup_printf(" RFC822.HEADER {%"PRIuUOFF_T"}\r\n", |
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131 hdr_size.virtual_size); |
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132 if (ctx->first) { |
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133 str++; ctx->first = FALSE; |
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134 } |
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135 if (o_stream_send_str(ctx->output, str) < 0) |
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136 return FALSE; |
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137 |
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Partial fetches were broken when they stopped between virtual CR and LF.
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138 return message_send(ctx->output, stream, &hdr_size, |
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IMAP protocol doesn't allow server to send NULs to client. Send ascii #128
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139 0, (uoff_t)-1, NULL, !mail->has_no_nuls) >= 0; |
988
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140 } |
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141 |
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142 static int fetch_send_rfc822_text(struct imap_fetch_context *ctx, |
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143 struct mail *mail) |
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144 { |
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145 struct message_size hdr_size, body_size; |
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146 struct istream *stream; |
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147 const char *str; |
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148 |
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149 stream = mail->get_stream(mail, &hdr_size, &body_size); |
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150 if (stream == NULL) |
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151 return FALSE; |
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152 |
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153 str = t_strdup_printf(" RFC822.TEXT {%"PRIuUOFF_T"}\r\n", |
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154 body_size.virtual_size); |
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155 if (ctx->first) { |
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156 str++; ctx->first = FALSE; |
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157 } |
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158 if (o_stream_send_str(ctx->output, str) < 0) |
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159 return FALSE; |
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160 |
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161 i_stream_seek(stream, hdr_size.physical_size); |
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162 return message_send(ctx->output, stream, &body_size, |
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163 0, (uoff_t)-1, NULL, !mail->has_no_nuls) >= 0; |
988
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164 } |
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165 |
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166 static int fetch_mail(struct imap_fetch_context *ctx, struct mail *mail) |
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167 { |
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168 struct imap_fetch_body_data *body; |
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169 size_t len, orig_len; |
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170 int failed, data_written; |
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171 |
994 | 172 t_push(); |
173 | |
988
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174 str_truncate(ctx->str, 0); |
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175 str_printfa(ctx->str, "* %u FETCH (", mail->seq); |
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176 orig_len = str_len(ctx->str); |
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177 |
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178 failed = TRUE; |
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179 data_written = FALSE; |
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180 do { |
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181 /* write the data into temp string */ |
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182 if (ctx->imap_data & IMAP_FETCH_UID) |
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183 fetch_uid(ctx, mail); |
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184 if ((ctx->fetch_data & MAIL_FETCH_FLAGS) || mail->seen_updated) |
994 | 185 if (!fetch_flags(ctx, mail)) |
186 break; | |
988
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187 if (ctx->fetch_data & MAIL_FETCH_RECEIVED_DATE) |
994 | 188 if (!fetch_internaldate(ctx, mail)) |
189 break; | |
988
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190 if (ctx->fetch_data & MAIL_FETCH_SIZE) |
994 | 191 if (!fetch_rfc822_size(ctx, mail)) |
192 break; | |
988
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193 if (ctx->fetch_data & MAIL_FETCH_IMAP_BODY) |
994 | 194 if (!fetch_body(ctx, mail)) |
195 break; | |
988
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196 if (ctx->fetch_data & MAIL_FETCH_IMAP_BODYSTRUCTURE) |
994 | 197 if (!fetch_bodystructure(ctx, mail)) |
198 break; | |
988
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199 if (ctx->fetch_data & MAIL_FETCH_IMAP_ENVELOPE) |
994 | 200 if(!fetch_envelope(ctx, mail)) |
201 break; | |
988
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202 |
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203 /* send the data written into temp string */ |
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204 len = str_len(ctx->str); |
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205 ctx->first = len == orig_len; |
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206 |
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207 if (!ctx->first) |
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208 str_truncate(ctx->str, --len); |
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209 if (o_stream_send(ctx->output, str_data(ctx->str), len) < 0) |
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210 break; |
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211 |
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212 data_written = TRUE; |
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213 |
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214 /* large data */ |
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215 if (ctx->imap_data & IMAP_FETCH_RFC822) |
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216 if (!fetch_send_rfc822(ctx, mail)) |
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217 break; |
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218 if (ctx->imap_data & IMAP_FETCH_RFC822_HEADER) |
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219 if (!fetch_send_rfc822_header(ctx, mail)) |
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220 break; |
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221 if (ctx->imap_data & IMAP_FETCH_RFC822_TEXT) |
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222 if (!fetch_send_rfc822_text(ctx, mail)) |
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223 break; |
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224 |
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225 for (body = ctx->bodies; body != NULL; body = body->next) { |
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226 if (!imap_fetch_body_section(ctx, body, mail)) |
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227 break; |
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228 } |
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229 |
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230 failed = FALSE; |
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231 } while (0); |
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232 |
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233 if (data_written) { |
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234 if (o_stream_send(ctx->output, ")\r\n", 3) < 0) |
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235 failed = TRUE; |
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236 } |
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237 |
994 | 238 t_pop(); |
988
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239 return !failed; |
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240 } |
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241 |
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242 int imap_fetch(struct client *client, |
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243 enum mail_fetch_field fetch_data, |
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244 enum imap_fetch_field imap_data, |
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245 struct imap_fetch_body_data *bodies, |
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246 const char *messageset, int uidset) |
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247 { |
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248 struct imap_fetch_context ctx; |
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249 struct mail *mail; |
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250 int all_found, update_seen = FALSE; |
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251 |
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252 if (!client->mailbox->readonly) { |
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253 /* If we have any BODY[..] sections, \Seen flag is added for |
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254 all messages */ |
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255 struct imap_fetch_body_data *body; |
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256 |
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257 for (body = bodies; body != NULL; body = body->next) { |
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258 if (!body->peek) { |
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259 update_seen = TRUE; |
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260 break; |
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261 } |
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262 } |
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263 |
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264 if (imap_data & (IMAP_FETCH_RFC822|IMAP_FETCH_RFC822_TEXT)) |
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265 update_seen = TRUE; |
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266 } |
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267 |
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268 memset(&ctx, 0, sizeof(ctx)); |
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269 ctx.fetch_data = fetch_data; |
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270 ctx.imap_data = imap_data; |
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271 ctx.bodies = bodies; |
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272 ctx.output = client->output; |
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273 ctx.select_counter = client->select_counter; |
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274 |
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275 ctx.fetch_ctx = client->mailbox-> |
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276 fetch_init(client->mailbox, fetch_data, &update_seen, |
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277 messageset, uidset); |
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278 if (ctx.fetch_ctx == NULL) |
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279 return -1; |
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280 |
996 | 281 ctx.str = str_new(default_pool, 8192); |
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282 while ((mail = client->mailbox->fetch_next(ctx.fetch_ctx)) != NULL) { |
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283 if (!fetch_mail(&ctx, mail)) { |
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284 ctx.failed = TRUE; |
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285 break; |
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286 } |
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287 } |
996 | 288 str_free(ctx.str); |
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289 |
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290 if (!client->mailbox->fetch_deinit(ctx.fetch_ctx, &all_found)) |
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291 return -1; |
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292 return ctx.failed ? -1 : all_found; |
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293 } |