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annotate src/header.c @ 0:08114f7dcc23 0.2.21

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this is masqmail-0.2.21 from oliver kurth
author meillo@marmaro.de
date Fri, 26 Sep 2008 17:05:23 +0200
parents
children 26e34ae9a3e3
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08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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1 /* MasqMail
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2 Copyright (C) 2000 Oliver Kurth
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3
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4 This program is free software; you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 2 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program; if not, write to the Free Software
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16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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17 */
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18 #include "masqmail.h"
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19
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20 header_name header_names[] =
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21 {
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22 { "From", HEAD_FROM, },
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23 { "Sender", HEAD_SENDER, },
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24 { "To", HEAD_TO, },
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25 { "Cc", HEAD_CC, },
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26 { "Bcc", HEAD_BCC, },
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27 { "Date", HEAD_DATE, },
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28 { "Message-Id", HEAD_MESSAGE_ID, },
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29 { "Reply-To", HEAD_REPLY_TO, },
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30 { "Subject", HEAD_SUBJECT, },
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31 { "Return-Path", HEAD_RETURN_PATH, },
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32 { "Envelope-To", HEAD_ENVELOPE_TO, },
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33 { "Received", HEAD_RECEIVED },
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34 };
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35
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36 /* this was borrowed from exim and slightly changed */
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37 gchar *rec_timestamp()
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38 {
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39 static gchar buf[64];
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40 int len;
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41
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42 time_t now = time(NULL);
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43 struct tm *t = localtime(&now);
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44
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45 int diff_hour, diff_min;
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46 struct tm local;
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47 struct tm *gmt;
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48
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49 memcpy(&local, t, sizeof(struct tm));
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50 gmt = gmtime(&now);
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51 diff_min = 60*(local.tm_hour - gmt->tm_hour) + local.tm_min - gmt->tm_min;
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52 if (local.tm_year != gmt->tm_year)
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53 diff_min += (local.tm_year > gmt->tm_year)? 1440 : -1440;
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54 else if (local.tm_yday != gmt->tm_yday)
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55 diff_min += (local.tm_yday > gmt->tm_yday)? 1440 : -1440;
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56 diff_hour = diff_min/60;
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57 diff_min = abs(diff_min - diff_hour*60);
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58
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59 len = strftime(buf, sizeof(buf), "%a, ", &local);
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60 g_snprintf(buf + len, sizeof(buf) - len, "%02d ", local.tm_mday);
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61 len += strlen(buf + len);
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62 len += strftime(buf + len, sizeof(buf) - len, "%b %Y %H:%M:%S", &local);
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63 g_snprintf(buf + len, sizeof(buf) - len, " %+03d%02d", diff_hour, diff_min);
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64
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65 return buf;
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66 }
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67
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68 /* finds list of headers matching id
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69 if id == HEAD_UNKNOWN and header == NULL finds all unknown headers
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70 else finds all headers matching header
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71 */
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72 GList *find_header(GList *hdr_list, header_id id, gchar *hdr_str)
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73 {
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74 GList *found_list = NULL;
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75 GList *node;
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76
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77 if((id != HEAD_UNKNOWN) || (hdr_str == NULL)){
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78 foreach(hdr_list, node){
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79 header *hdr = (header *)(node->data);
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80 if(hdr->id == id)
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81 found_list = g_list_append(found_list, hdr);
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82 }
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83 }else{
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84 foreach(hdr_list, node){
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85 header *hdr = (header *)(node->data);
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86 gchar buf[64], *q = buf, *p = hdr->header;
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87
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88 while(*p != ':' && q < buf+63 && *p) *(q++) = *(p++);
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89 *q = 0;
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90
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91 if(strcasecmp(buf, hdr_str) == 0)
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92 found_list = g_list_append(found_list, hdr);
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93 }
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94 }
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95 return found_list;
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96 }
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97
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98 void header_unfold(header *hdr)
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99 {
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100 gchar *tmp_hdr = g_malloc(strlen(hdr->header));
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101 gchar *p = hdr->header, *q = tmp_hdr;
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102 gboolean flag = FALSE;
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103
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104 while(*p){
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105 if(*p != '\n')
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106 *(q++) = *p;
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107 else
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108 flag = TRUE;
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109 p++;
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110 }
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111 *(q++) = '\n';
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112
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113 if(flag){
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114 gchar *new_hdr;
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115
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116 g_free(hdr->header);
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117 new_hdr = g_strdup(tmp_hdr);
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118 g_free(tmp_hdr);
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119 hdr->value = new_hdr + (hdr->value - hdr->header);
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120 hdr->header = new_hdr;
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121 }
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122 }
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123
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124 #define MAX_HDR_LEN 72
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125 void header_fold(header *hdr)
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126 {
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127 gint len = strlen(hdr->header);
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128 gchar *p, *q;
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129 /* size is probably overestimated, but so we are on the safe side */
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130 gchar *tmp_hdr = g_malloc(len + 2*len/MAX_HDR_LEN);
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131
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132 p = hdr->header;
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133 q = tmp_hdr;
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134
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135 if(p[len-1] == '\n')
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136 p[len-1] = 0;
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137
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138 while(*p){
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139 gint i,l;
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140 gchar *pp;
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141
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142 /* look forward and find potential break points */
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143 i = 0; l = -1;
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144 pp = p;
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145 while(*pp && (i < MAX_HDR_LEN)){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
146 if((*pp == ' ') || (*pp == '\t'))
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
147 l = i;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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148 pp++;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
149 i++;
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150 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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151 if(!*pp) l = pp-p; /* take rest, if EOS found */
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152
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
153 if(l == -1){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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154 /* no potential break point was found within MAX_HDR_LEN
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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155 so advance further until the next */
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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156 while(*pp && *pp != ' ' && *pp != '\t'){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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157 pp++;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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158 i++;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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159 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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160 l = i;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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161 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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162
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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163 /* copy */
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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164 i = 0;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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165 while(i < l){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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166 *(q++) = *(p++);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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167 i++;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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168 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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169 *(q++) = '\n';
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170 *(q++) = *(p++); /* this is either space, tab or 0 */
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171 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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172 {
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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173 gchar *new_hdr;
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174
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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175 g_free(hdr->header);
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176 new_hdr = g_strdup(tmp_hdr);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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177 g_free(tmp_hdr);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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178 hdr->value = new_hdr + (hdr->value - hdr->header);
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179 hdr->header = new_hdr;
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180 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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181 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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182
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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183 header *create_header(header_id id, gchar *fmt, ...)
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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184 {
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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185 gchar *p;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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186 header *hdr;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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187 va_list args;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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188 va_start(args, fmt);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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189
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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190 if((hdr = g_malloc(sizeof(header)))){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
191
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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192 hdr->id = id;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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193 hdr->header = g_strdup_vprintf(fmt, args);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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194 hdr->value = NULL;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
195
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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196 p = hdr->header;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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197 while(*p && *p != ':') p++;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
198 if(*p)
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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199 hdr->value = p+1;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
200 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
201
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
202 va_end(args);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
203 return hdr;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
204 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
205
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
206 void destroy_header(header *hdr)
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
207 {
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
208 if(hdr){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
209 if(hdr->header) g_free(hdr->header);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
210 g_free(hdr);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
211 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
212 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
213
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
214 header *copy_header(header *hdr)
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
215 {
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
216 header *new_hdr = NULL;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
217
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
218 if(hdr){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
219 if((new_hdr = g_malloc(sizeof(header)))){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
220 new_hdr->id = hdr->id;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
221 new_hdr->header = g_strdup(hdr->header);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
222 new_hdr->value = new_hdr->header + (hdr->value - hdr->header);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
223 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
224 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
225 return new_hdr;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
226 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
227
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
228 header *get_header(gchar *line)
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
229 {
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
230 gchar *p = line;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
231 gchar buf[64], *q = buf;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
232 gint i;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
233 header *hdr;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
234
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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235 while(*p && (*p != ':') && (q < buf+63)) *(q++) = *(p++);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
236 *q = 0;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
237
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
238 if(*p != ':') return NULL;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
239
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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diff changeset
240 hdr = g_malloc(sizeof(header));
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
241
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
242 hdr->value = NULL;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
243 p++;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
244
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
245 while(*p && (*p == ' ' || *p == '\t')) p++;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
246 hdr->value = p;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
247
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
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diff changeset
248 for(i = 0; i < HEAD_NUM_IDS; i++){
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
249 if(strcasecmp(header_names[i].header, buf) == 0)
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
250 break;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
251 }
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
252 hdr->id = (header_id)i;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
253 hdr->header = g_strdup(line);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
254 hdr->value = hdr->header + (hdr->value - line);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
255
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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parents:
diff changeset
256 DEBUG(4) debugf("header: %d = %s", hdr->id, hdr->header);
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
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parents:
diff changeset
257
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
258 return hdr;
08114f7dcc23 this is masqmail-0.2.21 from oliver kurth
meillo@marmaro.de
parents:
diff changeset
259 }