Mercurial > masqmail
annotate src/accept.c @ 194:346955794084
specified group by name; added path to --with-glib-static
author | meillo@marmaro.de |
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date | Thu, 15 Jul 2010 23:44:48 +0200 |
parents | 89f951be358f |
children | 996b53a50f55 |
rev | line source |
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0 | 1 /* MasqMail |
2 Copyright (C) 1999-2001 Oliver Kurth | |
3 | |
4 This program is free software; you can redistribute it and/or modify | |
5 it under the terms of the GNU General Public License as published by | |
6 the Free Software Foundation; either version 2 of the License, or | |
7 (at your option) any later version. | |
8 | |
9 This program is distributed in the hope that it will be useful, | |
10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 GNU General Public License for more details. | |
13 | |
14 You should have received a copy of the GNU General Public License | |
15 along with this program; if not, write to the Free Software | |
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 */ | |
18 | |
19 #include "masqmail.h" | |
20 #include "readsock.h" | |
21 | |
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22 gchar *prot_names[] = { |
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23 "local", |
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24 "bsmtp", |
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25 "smtp", |
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26 "esmtp", |
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27 "(unknown)" /* should not happen, but better than crashing. */ |
0 | 28 }; |
29 | |
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30 static gchar* |
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31 string_base62(gchar * res, guint value, gchar len) |
0 | 32 { |
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33 static gchar base62_chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
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34 gchar *p = res + len; |
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35 *p = '\0'; |
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36 while (p > res) { |
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37 *(--p) = base62_chars[value % 62]; |
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38 value /= 62; |
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39 } |
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40 return res; |
0 | 41 } |
42 | |
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43 static gint |
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44 _g_list_addr_isequal(gconstpointer a, gconstpointer b) |
0 | 45 { |
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46 address *addr1 = (address *) a; |
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47 address *addr2 = (address *) b; |
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48 int ret; |
0 | 49 |
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50 if ((ret = strcasecmp(addr1->domain, addr2->domain)) == 0) |
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51 return strcmp(addr1->local_part, addr2->local_part); |
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52 else |
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53 return ret; |
0 | 54 } |
55 | |
56 /* accept message from anywhere. | |
57 A locally originating message is indicated by msg->recieved_host == NULL | |
58 | |
109 | 59 The -t option: |
60 The ACC_RCPT_FROM_HEAD flag adds the recipients found in To/Cc/Bcc | |
61 headers to the recipients list. | |
62 The ACC_DEL_RCPTS flag makes only sense if the ACC_RCPT_FROM_HEAD | |
63 flag is given too. With ACC_DEL_RCPTS the recipients given on the | |
64 command line are removed from the ones given in headers. | |
0 | 65 */ |
66 | |
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67 accept_error |
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68 accept_message_stream(FILE * in, message * msg, guint flags) |
0 | 69 { |
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70 gchar *line, *line1; |
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71 int line_size = MAX_DATALINE; |
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72 gboolean in_headers = TRUE; |
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73 header *hdr = NULL; |
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74 gint line_cnt = 0, data_size = 0; |
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75 |
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76 line = g_malloc(line_size); |
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77 line[0] = '\0'; |
0 | 78 |
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79 while (TRUE) { |
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80 int len = read_sockline1(in, &line, &line_size, 5 * 60, READSOCKL_CVT_CRLF); |
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81 |
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82 line1 = line; |
0 | 83 |
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84 if ((line[0] == '.') && (!(flags & ACC_DOT_IGNORE))) { |
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85 if (line[1] == '\n') { |
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86 g_free(line); |
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87 break; |
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88 } |
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89 line1++; |
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90 } |
0 | 91 |
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92 if (len <= 0) { |
111
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93 if ((len == -1) && (flags & (ACC_DOT_IGNORE | ACC_NODOT_RELAX))) { |
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94 /* we got an EOF, and the last line was not terminated by a CR */ |
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95 gint len1 = strlen(line1); |
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96 if (len1 > 0) { /* == 0 is 'normal' (EOF after a CR) */ |
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97 if (line1[len1 - 1] != '\n') { /* some mail clients allow unterminated lines */ |
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98 line1[len1] = '\n'; |
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99 line1[len1 + 1] = '\0'; |
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100 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1)); |
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101 data_size += strlen(line1); |
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102 line_cnt++; |
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103 } |
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104 } |
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105 break; |
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106 } else { |
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107 g_free(line); |
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108 if (len == -1) { |
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109 return AERR_EOF; |
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110 } else if (len == -2) { |
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111 /* should not happen any more */ |
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112 return AERR_OVERFLOW; |
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113 } else if (len == -3) { |
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114 return AERR_TIMEOUT; |
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115 } else { |
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116 /* does not happen */ |
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117 DEBUG(5) debugf("read_sockline returned %d\n", len); |
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118 return AERR_UNKNOWN; |
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119 } |
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120 } |
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121 } else { |
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122 if (in_headers) { |
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123 |
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124 /* some pop servers send the 'From ' line, skip it: */ |
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125 if (msg->hdr_list == NULL) |
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126 if (strncmp(line1, "From ", 5) == 0) |
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127 continue; |
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128 |
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129 if (line1[0] == ' ' || line1[0] == '\t') { |
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130 /* continuation of 'folded' header: */ |
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131 if (hdr) { |
22 | 132 hdr->header = g_strconcat(hdr->header, line1, NULL); |
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133 } |
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134 |
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135 } else if (line1[0] == '\n') { |
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136 /* an empty line marks end of headers */ |
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137 in_headers = FALSE; |
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138 } else { |
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139 /* in all other cases we expect another header */ |
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140 if ((hdr = get_header(line1))) |
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141 msg->hdr_list = g_list_append(msg->hdr_list, hdr); |
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142 else { |
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143 /* if get_header() returns NULL, no header was recognized, |
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144 so this seems to be the first data line of a broken mailer |
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145 which does not send an empty line after the headers */ |
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146 in_headers = FALSE; |
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147 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1)); |
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148 } |
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149 } |
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150 } else { |
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151 msg->data_list = g_list_prepend(msg->data_list, g_strdup(line1)); |
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152 data_size += strlen(line1); |
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153 line_cnt++; |
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154 } |
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155 } |
120
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156 if (conf.max_msg_size && (data_size > conf.max_msg_size)) { |
117
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157 DEBUG(4) debugf("accept_message_stream(): " |
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158 "received %d bytes (conf.max_msg_size=%d)\n", |
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159 data_size, conf.max_msg_size); |
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160 return AERR_SIZE; |
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161 } |
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162 |
0 | 163 } |
164 | |
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165 if (msg->data_list != NULL) |
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166 msg->data_list = g_list_reverse(msg->data_list); |
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167 else |
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168 /* make sure data list is not NULL: */ |
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169 msg->data_list = g_list_append(NULL, g_strdup("")); |
0 | 170 |
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171 DEBUG(4) debugf("received %d lines of data (%d bytes)\n", line_cnt, data_size); |
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172 /* we get here after we succesfully received the mail data */ |
0 | 173 |
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174 msg->data_size = data_size; |
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175 msg->received_time = time(NULL); |
0 | 176 |
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177 return AERR_OK; |
0 | 178 } |
179 | |
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180 accept_error |
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181 accept_message_prepare(message * msg, guint flags) |
0 | 182 { |
10
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183 struct passwd *passwd = NULL; |
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184 GList *non_rcpt_list = NULL; |
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185 time_t rec_time = time(NULL); |
0 | 186 |
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187 DEBUG(5) debugf("accept_message_prepare()\n"); |
0 | 188 |
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189 /* create unique message id */ |
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190 msg->uid = g_malloc(14); |
0 | 191 |
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192 string_base62(msg->uid, rec_time, 6); |
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193 msg->uid[6] = '-'; |
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194 string_base62(&(msg->uid[7]), getpid(), 3); |
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195 msg->uid[10] = '-'; |
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196 string_base62(&(msg->uid[11]), msg->transfer_id, 2); |
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197 msg->uid[13] = 0; |
0 | 198 |
10
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199 /* if local, get password entry */ |
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200 if (msg->received_host == NULL) { |
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201 passwd = g_memdup(getpwuid(geteuid()), sizeof(struct passwd)); |
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202 msg->ident = g_strdup(passwd->pw_name); |
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203 } |
0 | 204 |
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205 /* set return path if local */ |
22 | 206 if (msg->return_path == NULL && msg->received_host == NULL) { |
207 gchar *path = g_strdup_printf("<%s@%s>", passwd->pw_name, conf.host_name); | |
208 DEBUG(3) debugf("setting return_path for local accept: %s\n", path); | |
209 msg->return_path = create_address(path, TRUE); | |
210 g_free(path); | |
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211 } |
0 | 212 |
109 | 213 /* -t option (see comment above) */ |
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214 if (flags & ACC_DEL_RCPTS) { |
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215 non_rcpt_list = msg->rcpt_list; |
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216 msg->rcpt_list = NULL; |
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217 } |
0 | 218 |
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219 /* scan headers */ |
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220 { |
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221 gboolean has_id = FALSE; |
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222 gboolean has_date = FALSE; |
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223 gboolean has_sender = FALSE; |
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224 gboolean has_from = FALSE; |
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225 gboolean has_to_or_cc = FALSE; |
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226 GList *hdr_node, *hdr_node_next; |
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227 header *hdr; |
0 | 228 |
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229 for (hdr_node = g_list_first(msg->hdr_list); |
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230 hdr_node != NULL; hdr_node = hdr_node_next) { |
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231 hdr_node_next = g_list_next(hdr_node); |
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232 hdr = ((header *) (hdr_node->data)); |
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233 DEBUG(5) debugf("scanning headers: %s", hdr->header); |
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234 switch (hdr->id) { |
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235 case HEAD_MESSAGE_ID: |
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236 has_id = TRUE; |
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237 break; |
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238 case HEAD_DATE: |
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239 has_date = TRUE; |
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240 break; |
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241 case HEAD_FROM: |
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242 has_from = TRUE; |
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243 break; |
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244 case HEAD_SENDER: |
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245 has_sender = TRUE; |
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246 break; |
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247 case HEAD_TO: |
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248 case HEAD_CC: |
106
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249 has_to_or_cc = TRUE; |
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250 /* fall through */ |
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251 case HEAD_BCC: |
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252 if (flags & ACC_RCPT_FROM_HEAD) { |
109 | 253 /* -t option (see comment above) */ |
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254 DEBUG(5) debugf("hdr->value = %s\n", hdr->value); |
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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 |
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309 addr = g_strdup(hdr->value); |
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310 g_strchomp(addr); |
0 | 311 |
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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")); |
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325 } |
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326 } |
0 | 327 |
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328 if (flags & ACC_DEL_RCPTS) { |
109 | 329 /* remove the recipients given on the command line from the ones given in headers |
330 -t option (see comment above) */ | |
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331 GList *rcpt_node; |
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332 foreach(non_rcpt_list, rcpt_node) { |
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333 address *rcpt = (address *) (rcpt_node->data); |
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334 GList *node; |
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335 if ((node = g_list_find_custom(msg->rcpt_list, rcpt, _g_list_addr_isequal))) { |
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336 DEBUG(3) debugf("removing rcpt address %s\n", addr_string(node->data)); |
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337 msg->rcpt_list = g_list_remove_link(msg->rcpt_list, node); |
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338 destroy_address((address *) (node->data)); |
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339 g_list_free_1(node); |
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340 } |
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341 } |
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342 } |
0 | 343 |
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344 /* here we should have our recipients, fail if not: */ |
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345 if (msg->rcpt_list == NULL) { |
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346 logwrite(LOG_WARNING, "no recipients found in message\n"); |
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347 return AERR_NORCPT; |
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348 } |
0 | 349 |
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350 if (!(has_sender || has_from)) { |
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351 DEBUG(3) debugf("adding 'From' header\n"); |
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352 msg->hdr_list = g_list_append(msg->hdr_list, |
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353 msg->full_sender_name |
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354 ? |
13 | 355 create_header(HEAD_FROM, "From: \"%s\" <%s@%s>\n", msg->full_sender_name, |
356 msg->return_path->local_part, msg->return_path->domain) | |
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357 : |
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358 create_header(HEAD_FROM, "From: <%s@%s>\n", |
13 | 359 msg->return_path->local_part, msg->return_path->domain) |
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360 ); |
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361 } |
106
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362 if (!has_to_or_cc) { |
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363 DEBUG(3) debugf("no To: or Cc: header, hence adding `To: undisclosed recipients:;'\n"); |
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364 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_TO, "To: undisclosed-recipients:;\n")); |
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365 } |
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366 if (!has_date) { |
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367 DEBUG(3) debugf("adding 'Date:' header\n"); |
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368 msg->hdr_list = g_list_append(msg->hdr_list, create_header(HEAD_DATE, "Date: %s\n", rec_timestamp())); |
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369 } |
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370 if (!has_id) { |
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371 DEBUG(3) debugf("adding 'Message-ID:' header\n"); |
13 | 372 msg->hdr_list = g_list_append(msg->hdr_list, |
373 create_header(HEAD_MESSAGE_ID, "Message-ID: <%s@%s>\n", msg->uid, conf.host_name)); | |
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374 } |
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375 } |
0 | 376 |
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377 /* Received header: */ |
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378 /* At this point because we have to know the rcpts for the 'for' part */ |
102
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379 gchar *for_string = NULL; |
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380 header *hdr = NULL; |
0 | 381 |
102
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382 DEBUG(3) debugf("adding 'Received:' header\n"); |
0 | 383 |
102
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384 if (g_list_length(msg->rcpt_list) == 1) { |
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385 address *addr = (address *) (g_list_first(msg->rcpt_list)->data); |
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386 for_string = g_strdup_printf(" for %s", addr_string(addr)); |
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387 } |
0 | 388 |
102
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389 if (msg->received_host == NULL) { |
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390 /* received locally */ |
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391 hdr = create_header(HEAD_RECEIVED, "Received: from %s by %s with %s (%s %s) id %s%s; %s\n", |
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392 passwd->pw_name, conf.host_name, prot_names[msg->received_prot], |
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393 PACKAGE, VERSION, msg->uid, for_string ? for_string : "", rec_timestamp()); |
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394 } else { |
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395 /* received from remote */ |
0 | 396 #ifdef ENABLE_IDENT |
102
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397 DEBUG(5) debugf("adding 'Received:' header (5)\n"); |
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398 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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399 msg->received_host, msg->ident ? msg->ident : "unknown", conf.host_name, |
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400 prot_names[msg->received_prot], PACKAGE, VERSION, msg->uid, for_string ? for_string : "", |
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401 rec_timestamp()); |
0 | 402 #else |
102
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403 hdr = create_header(HEAD_RECEIVED, "Received: from %s by %s with %s (%s %s) id %s%s; %s\n", |
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404 msg->received_host, conf.host_name, prot_names[msg->received_prot], |
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405 PACKAGE, VERSION, msg->uid, for_string ? for_string : "", rec_timestamp()); |
0 | 406 #endif |
102
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407 } |
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408 header_fold(hdr); |
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409 msg->hdr_list = g_list_prepend(msg->hdr_list, hdr); |
0 | 410 |
102
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411 if (for_string) |
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412 g_free(for_string); |
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413 |
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414 /* write message to spool: */ |
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415 /* accept is no longer responsible for this |
13 | 416 if (!spool_write(msg, TRUE)) |
417 return AERR_NOSPOOL; | |
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418 */ |
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419 return AERR_OK; |
0 | 420 } |
421 | |
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422 accept_error |
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423 accept_message(FILE * in, message * msg, guint flags) |
0 | 424 { |
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425 accept_error err; |
0 | 426 |
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427 err = accept_message_stream(in, msg, flags); |
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428 if (err == AERR_OK) |
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429 err = accept_message_prepare(msg, flags); |
0 | 430 |
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431 return err; |
0 | 432 } |