Mercurial > masqmail
annotate src/accept.c @ 269:fd1d77e5a5da
comment: problems with `To: alice, bob' and -t
author | markus schnalke <meillo@marmaro.de> |
---|---|
date | Fri, 03 Dec 2010 12:55:44 -0300 |
parents | 7b12d081b939 |
children | 0c44b239c7fe |
rev | line source |
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0 | 1 /* MasqMail |
2 Copyright (C) 1999-2001 Oliver Kurth | |
224 | 3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de> |
0 | 4 |
5 This program is free software; you can redistribute it and/or modify | |
6 it under the terms of the GNU General Public License as published by | |
7 the Free Software Foundation; either version 2 of the License, or | |
8 (at your option) any later version. | |
9 | |
10 This program is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 GNU General Public License for more details. | |
14 | |
15 You should have received a copy of the GNU General Public License | |
16 along with this program; if not, write to the Free Software | |
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 */ | |
19 | |
20 #include "masqmail.h" | |
21 #include "readsock.h" | |
22 | |
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23 gchar *prot_names[] = { |
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24 "local", |
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25 "bsmtp", |
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26 "smtp", |
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27 "esmtp", |
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28 "(unknown)" /* should not happen, but better than crashing. */ |
0 | 29 }; |
30 | |
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31 static gchar* |
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32 string_base62(gchar * res, guint value, gchar len) |
0 | 33 { |
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34 static gchar base62_chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
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35 gchar *p = res + len; |
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36 *p = '\0'; |
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37 while (p > res) { |
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38 *(--p) = base62_chars[value % 62]; |
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39 value /= 62; |
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40 } |
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41 return res; |
0 | 42 } |
43 | |
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44 static gint |
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45 _g_list_addr_isequal(gconstpointer a, gconstpointer b) |
0 | 46 { |
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47 address *addr1 = (address *) a; |
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48 address *addr2 = (address *) b; |
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49 int ret; |
0 | 50 |
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51 if ((ret = strcasecmp(addr1->domain, addr2->domain)) == 0) |
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52 return strcmp(addr1->local_part, addr2->local_part); |
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53 else |
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54 return ret; |
0 | 55 } |
56 | |
57 /* accept message from anywhere. | |
58 A locally originating message is indicated by msg->recieved_host == NULL | |
59 | |
109 | 60 The -t option: |
61 The ACC_RCPT_FROM_HEAD flag adds the recipients found in To/Cc/Bcc | |
268
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62 headers to the recipients list. The recipients given on the |
109 | 63 command line are removed from the ones given in headers. |
0 | 64 */ |
65 | |
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66 accept_error |
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67 accept_message_stream(FILE * in, message * msg, guint flags) |
0 | 68 { |
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69 gchar *line, *line1; |
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70 int line_size = MAX_DATALINE; |
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71 gboolean in_headers = TRUE; |
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72 header *hdr = NULL; |
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73 gint line_cnt = 0, data_size = 0; |
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74 |
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75 line = g_malloc(line_size); |
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76 line[0] = '\0'; |
0 | 77 |
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78 while (TRUE) { |
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79 int len = read_sockline1(in, &line, &line_size, 5 * 60, READSOCKL_CVT_CRLF); |
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80 |
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81 line1 = line; |
0 | 82 |
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83 if ((line[0] == '.') && (!(flags & ACC_DOT_IGNORE))) { |
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84 if (line[1] == '\n') { |
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85 g_free(line); |
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86 break; |
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87 } |
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88 line1++; |
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89 } |
0 | 90 |
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91 if (len <= 0) { |
111
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92 if ((len == -1) && (flags & (ACC_DOT_IGNORE | ACC_NODOT_RELAX))) { |
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93 /* we got an EOF, and the last line was not terminated by a CR */ |
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94 gint len1 = strlen(line1); |
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95 if (len1 > 0) { /* == 0 is 'normal' (EOF after a CR) */ |
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96 if (line1[len1 - 1] != '\n') { /* some mail clients allow unterminated lines */ |
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97 line1[len1] = '\n'; |
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98 line1[len1 + 1] = '\0'; |
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99 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1)); |
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100 data_size += strlen(line1); |
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101 line_cnt++; |
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102 } |
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103 } |
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104 break; |
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105 } else { |
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106 g_free(line); |
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107 if (len == -1) { |
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108 return AERR_EOF; |
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109 } else if (len == -2) { |
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110 /* should not happen any more */ |
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111 return AERR_OVERFLOW; |
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112 } else if (len == -3) { |
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113 return AERR_TIMEOUT; |
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114 } else { |
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115 /* does not happen */ |
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116 DEBUG(5) debugf("read_sockline returned %d\n", len); |
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117 return AERR_UNKNOWN; |
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118 } |
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119 } |
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120 } else { |
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121 if (in_headers) { |
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122 |
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123 /* some pop servers send the 'From ' line, skip it: */ |
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124 if (msg->hdr_list == NULL) |
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125 if (strncmp(line1, "From ", 5) == 0) |
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126 continue; |
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127 |
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128 if (line1[0] == ' ' || line1[0] == '\t') { |
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129 /* continuation of 'folded' header: */ |
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130 if (hdr) { |
22 | 131 hdr->header = g_strconcat(hdr->header, line1, NULL); |
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132 } |
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133 |
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134 } else if (line1[0] == '\n') { |
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135 /* an empty line marks end of headers */ |
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136 in_headers = FALSE; |
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137 } else { |
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138 /* in all other cases we expect another header */ |
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139 if ((hdr = get_header(line1))) |
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140 msg->hdr_list = g_list_append(msg->hdr_list, hdr); |
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141 else { |
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142 /* if get_header() returns NULL, no header was recognized, |
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143 so this seems to be the first data line of a broken mailer |
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144 which does not send an empty line after the headers */ |
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145 in_headers = FALSE; |
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146 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1)); |
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147 } |
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148 } |
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149 } else { |
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150 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1)); |
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151 data_size += strlen(line1); |
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152 line_cnt++; |
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153 } |
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154 } |
120
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155 if (conf.max_msg_size && (data_size > conf.max_msg_size)) { |
117
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156 DEBUG(4) debugf("accept_message_stream(): " |
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157 "received %d bytes (conf.max_msg_size=%d)\n", |
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158 data_size, conf.max_msg_size); |
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159 return AERR_SIZE; |
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160 } |
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161 |
0 | 162 } |
163 | |
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164 if (msg->data_list != NULL) |
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165 msg->data_list = g_list_reverse(msg->data_list); |
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166 else |
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167 /* make sure data list is not NULL: */ |
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168 msg->data_list = g_list_append(NULL, g_strdup("")); |
0 | 169 |
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170 DEBUG(4) debugf("received %d lines of data (%d bytes)\n", line_cnt, data_size); |
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171 /* we get here after we succesfully received the mail data */ |
0 | 172 |
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173 msg->data_size = data_size; |
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174 msg->received_time = time(NULL); |
0 | 175 |
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176 return AERR_OK; |
0 | 177 } |
178 | |
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179 accept_error |
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180 accept_message_prepare(message * msg, guint flags) |
0 | 181 { |
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182 struct passwd *passwd = NULL; |
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183 GList *non_rcpt_list = NULL; |
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184 time_t rec_time = time(NULL); |
0 | 185 |
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186 DEBUG(5) debugf("accept_message_prepare()\n"); |
0 | 187 |
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188 /* create unique message id */ |
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189 msg->uid = g_malloc(14); |
0 | 190 |
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191 string_base62(msg->uid, rec_time, 6); |
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192 msg->uid[6] = '-'; |
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193 string_base62(&(msg->uid[7]), getpid(), 3); |
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194 msg->uid[10] = '-'; |
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195 string_base62(&(msg->uid[11]), msg->transfer_id, 2); |
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196 msg->uid[13] = 0; |
0 | 197 |
10
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198 /* if local, get password entry */ |
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199 if (msg->received_host == NULL) { |
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200 passwd = g_memdup(getpwuid(geteuid()), sizeof(struct passwd)); |
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201 msg->ident = g_strdup(passwd->pw_name); |
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202 } |
0 | 203 |
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204 /* set return path if local */ |
22 | 205 if (msg->return_path == NULL && msg->received_host == NULL) { |
206 gchar *path = g_strdup_printf("<%s@%s>", passwd->pw_name, conf.host_name); | |
207 DEBUG(3) debugf("setting return_path for local accept: %s\n", path); | |
208 msg->return_path = create_address(path, TRUE); | |
209 g_free(path); | |
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210 } |
0 | 211 |
109 | 212 /* -t option (see comment above) */ |
268
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213 if (flags & ACC_RCPT_FROM_HEAD) { |
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214 non_rcpt_list = msg->rcpt_list; |
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215 msg->rcpt_list = NULL; |
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216 } |
0 | 217 |
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218 /* scan headers */ |
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219 { |
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220 gboolean has_id = FALSE; |
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221 gboolean has_date = FALSE; |
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222 gboolean has_sender = FALSE; |
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223 gboolean has_from = FALSE; |
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224 gboolean has_to_or_cc = FALSE; |
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225 GList *hdr_node, *hdr_node_next; |
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226 header *hdr; |
0 | 227 |
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228 for (hdr_node = g_list_first(msg->hdr_list); |
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229 hdr_node != NULL; hdr_node = hdr_node_next) { |
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230 hdr_node_next = g_list_next(hdr_node); |
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231 hdr = ((header *) (hdr_node->data)); |
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232 DEBUG(5) debugf("scanning headers: %s", hdr->header); |
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233 switch (hdr->id) { |
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234 case HEAD_MESSAGE_ID: |
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235 has_id = TRUE; |
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236 break; |
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237 case HEAD_DATE: |
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238 has_date = TRUE; |
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239 break; |
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240 case HEAD_FROM: |
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241 has_from = TRUE; |
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242 break; |
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243 case HEAD_SENDER: |
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244 has_sender = TRUE; |
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245 break; |
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246 case HEAD_TO: |
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247 case HEAD_CC: |
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248 has_to_or_cc = TRUE; |
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249 /* fall through */ |
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250 case HEAD_BCC: |
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251 if (flags & ACC_RCPT_FROM_HEAD) { |
109 | 252 /* -t option (see comment above) */ |
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253 DEBUG(5) debugf("hdr->value = %s\n", hdr->value); |
269
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254 /* FIXME: `To: alice, bob' makes problems */ |
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255 if (hdr->value) { |
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256 msg->rcpt_list = addr_list_append_rfc822(msg->rcpt_list, hdr->value, conf.host_name); |
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257 } |
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258 } |
106
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259 if (hdr->id == HEAD_BCC) { |
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260 DEBUG(3) debugf("removing 'Bcc' header\n"); |
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261 msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node); |
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262 g_list_free_1(hdr_node); |
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263 destroy_header(hdr); |
106
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264 } |
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265 break; |
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266 case HEAD_ENVELOPE_TO: |
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267 if (flags & ACC_SAVE_ENVELOPE_TO) { |
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268 DEBUG(3) debugf("creating 'X-Orig-Envelope-To' header\n"); |
22 | 269 msg->hdr_list = g_list_prepend(msg->hdr_list, create_header(HEAD_UNKNOWN, |
270 "X-Orig-Envelope-to: %s", hdr->value)); | |
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271 } |
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272 DEBUG(3) debugf("removing 'Envelope-To' header\n"); |
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273 msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node); |
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274 g_list_free_1(hdr_node); |
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275 destroy_header(hdr); |
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276 break; |
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277 case HEAD_RETURN_PATH: |
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278 if (flags & ACC_MAIL_FROM_HEAD) { |
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279 /* usually POP3 accept */ |
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280 msg->return_path = create_address_qualified(hdr->value, TRUE, msg->received_host); |
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281 DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path)); |
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282 } |
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283 DEBUG(3) debugf("removing 'Return-Path' header\n"); |
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284 msg->hdr_list = g_list_remove_link(msg->hdr_list, hdr_node); |
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285 g_list_free_1(hdr_node); |
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286 destroy_header(hdr); |
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287 break; |
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288 default: |
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289 break; /* make compiler happy */ |
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290 } |
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291 } |
0 | 292 |
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293 if (msg->return_path == NULL) { |
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294 /* this can happen for pop3 accept only and if no Return-path: header was given */ |
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295 GList *hdr_list; |
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296 header *hdr; |
0 | 297 |
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298 DEBUG(3) debugf("return_path == NULL\n"); |
0 | 299 |
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300 hdr_list = find_header(msg->hdr_list, HEAD_SENDER, NULL); |
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301 if (!hdr_list) |
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302 hdr_list = find_header(msg->hdr_list, HEAD_FROM, NULL); |
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303 if (hdr_list) { |
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304 gchar *addr; |
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305 hdr = (header *) (g_list_first(hdr_list)->data); |
0 | 306 |
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307 DEBUG(5) debugf("hdr->value = '%s'\n", hdr->value); |
0 | 308 |
10
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309 addr = g_strdup(hdr->value); |
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310 g_strchomp(addr); |
0 | 311 |
10
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312 if ((msg->return_path = create_address_qualified(addr, FALSE, msg->received_host)) != NULL) { |
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313 DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path)); |
13 | 314 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_UNKNOWN, |
315 "X-Warning: return path set from %s address\n", | |
316 hdr->id == HEAD_SENDER ? "Sender:" : "From:")); | |
10
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317 } |
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318 g_free(addr); |
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319 } |
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320 if (msg->return_path == NULL) { /* no Sender: or From: or create_address_qualified failed */ |
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321 msg->return_path = create_address_qualified("postmaster", TRUE, conf.host_name); |
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322 DEBUG(3) debugf("setting return_path to %s\n", addr_string(msg->return_path)); |
13 | 323 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_UNKNOWN, |
25 | 324 "X-Warning: real return path is unknown\n")); |
10
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325 } |
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326 } |
0 | 327 |
268
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328 if (flags & ACC_RCPT_FROM_HEAD) { |
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329 /* remove the recipients given on the command line |
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330 from the ones given in headers |
109 | 331 -t option (see comment above) */ |
10
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332 GList *rcpt_node; |
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333 foreach(non_rcpt_list, rcpt_node) { |
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334 address *rcpt = (address *) (rcpt_node->data); |
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335 GList *node; |
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336 if ((node = g_list_find_custom(msg->rcpt_list, rcpt, _g_list_addr_isequal))) { |
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337 DEBUG(3) debugf("removing rcpt address %s\n", addr_string(node->data)); |
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338 msg->rcpt_list = g_list_remove_link(msg->rcpt_list, node); |
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339 destroy_address((address *) (node->data)); |
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340 g_list_free_1(node); |
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341 } |
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342 } |
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343 } |
0 | 344 |
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345 /* here we should have our recipients, fail if not: */ |
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346 if (msg->rcpt_list == NULL) { |
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347 logwrite(LOG_WARNING, "no recipients found in message\n"); |
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348 return AERR_NORCPT; |
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349 } |
0 | 350 |
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351 if (!(has_sender || has_from)) { |
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352 DEBUG(3) debugf("adding 'From' header\n"); |
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353 msg->hdr_list = g_list_append(msg->hdr_list, |
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354 msg->full_sender_name |
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355 ? |
13 | 356 create_header(HEAD_FROM, "From: \"%s\" <%s@%s>\n", msg->full_sender_name, |
357 msg->return_path->local_part, msg->return_path->domain) | |
10
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358 : |
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359 create_header(HEAD_FROM, "From: <%s@%s>\n", |
13 | 360 msg->return_path->local_part, msg->return_path->domain) |
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361 ); |
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362 } |
106
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363 if (!has_to_or_cc) { |
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364 DEBUG(3) debugf("no To: or Cc: header, hence adding `To: undisclosed recipients:;'\n"); |
105
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365 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_TO, "To: undisclosed-recipients:;\n")); |
10
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366 } |
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367 if (!has_date) { |
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368 DEBUG(3) debugf("adding 'Date:' header\n"); |
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369 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_DATE, "Date: %s\n", rec_timestamp())); |
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370 } |
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371 if (!has_id) { |
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372 DEBUG(3) debugf("adding 'Message-ID:' header\n"); |
13 | 373 msg->hdr_list = g_list_append(msg->hdr_list, |
374 create_header(HEAD_MESSAGE_ID, "Message-ID: <%s@%s>\n", msg->uid, conf.host_name)); | |
10
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375 } |
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376 } |
0 | 377 |
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378 /* Received header: */ |
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379 /* At this point because we have to know the rcpts for the 'for' part */ |
102
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380 gchar *for_string = NULL; |
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381 header *hdr = NULL; |
0 | 382 |
102
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383 DEBUG(3) debugf("adding 'Received:' header\n"); |
0 | 384 |
102
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385 if (g_list_length(msg->rcpt_list) == 1) { |
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386 address *addr = (address *) (g_list_first(msg->rcpt_list)->data); |
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387 for_string = g_strdup_printf(" for %s", addr_string(addr)); |
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388 } |
0 | 389 |
102
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390 if (msg->received_host == NULL) { |
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391 /* received locally */ |
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392 hdr = create_header(HEAD_RECEIVED, "Received: from %s by %s with %s (%s %s) id %s%s; %s\n", |
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393 passwd->pw_name, conf.host_name, prot_names[msg->received_prot], |
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394 PACKAGE, VERSION, msg->uid, for_string ? for_string : "", rec_timestamp()); |
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395 } else { |
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396 /* received from remote */ |
0 | 397 #ifdef ENABLE_IDENT |
102
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398 DEBUG(5) debugf("adding 'Received:' header (5)\n"); |
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399 hdr = create_header(HEAD_RECEIVED, "Received: from %s (ident=%s) by %s with %s (%s %s) id %s%s; %s\n", |
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400 msg->received_host, msg->ident ? msg->ident : "unknown", conf.host_name, |
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401 prot_names[msg->received_prot], PACKAGE, VERSION, msg->uid, for_string ? for_string : "", |
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402 rec_timestamp()); |
0 | 403 #else |
102
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404 hdr = create_header(HEAD_RECEIVED, "Received: from %s by %s with %s (%s %s) id %s%s; %s\n", |
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405 msg->received_host, conf.host_name, prot_names[msg->received_prot], |
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406 PACKAGE, VERSION, msg->uid, for_string ? for_string : "", rec_timestamp()); |
0 | 407 #endif |
102
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408 } |
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409 header_fold(hdr); |
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410 msg->hdr_list = g_list_prepend(msg->hdr_list, hdr); |
0 | 411 |
102
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412 if (for_string) |
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413 g_free(for_string); |
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414 |
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415 return AERR_OK; |
0 | 416 } |
417 | |
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418 accept_error |
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419 accept_message(FILE * in, message * msg, guint flags) |
0 | 420 { |
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421 accept_error err; |
0 | 422 |
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423 err = accept_message_stream(in, msg, flags); |
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424 if (err == AERR_OK) |
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425 err = accept_message_prepare(msg, flags); |
0 | 426 |
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427 return err; |
0 | 428 } |