masqmail
view src/header.c @ 0:08114f7dcc23
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 |
line source
1 /* MasqMail
2 Copyright (C) 2000 Oliver Kurth
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.
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.
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 #include "masqmail.h"
20 header_name header_names[] =
21 {
22 { "From", HEAD_FROM, },
23 { "Sender", HEAD_SENDER, },
24 { "To", HEAD_TO, },
25 { "Cc", HEAD_CC, },
26 { "Bcc", HEAD_BCC, },
27 { "Date", HEAD_DATE, },
28 { "Message-Id", HEAD_MESSAGE_ID, },
29 { "Reply-To", HEAD_REPLY_TO, },
30 { "Subject", HEAD_SUBJECT, },
31 { "Return-Path", HEAD_RETURN_PATH, },
32 { "Envelope-To", HEAD_ENVELOPE_TO, },
33 { "Received", HEAD_RECEIVED },
34 };
36 /* this was borrowed from exim and slightly changed */
37 gchar *rec_timestamp()
38 {
39 static gchar buf[64];
40 int len;
42 time_t now = time(NULL);
43 struct tm *t = localtime(&now);
45 int diff_hour, diff_min;
46 struct tm local;
47 struct tm *gmt;
49 memcpy(&local, t, sizeof(struct tm));
50 gmt = gmtime(&now);
51 diff_min = 60*(local.tm_hour - gmt->tm_hour) + local.tm_min - gmt->tm_min;
52 if (local.tm_year != gmt->tm_year)
53 diff_min += (local.tm_year > gmt->tm_year)? 1440 : -1440;
54 else if (local.tm_yday != gmt->tm_yday)
55 diff_min += (local.tm_yday > gmt->tm_yday)? 1440 : -1440;
56 diff_hour = diff_min/60;
57 diff_min = abs(diff_min - diff_hour*60);
59 len = strftime(buf, sizeof(buf), "%a, ", &local);
60 g_snprintf(buf + len, sizeof(buf) - len, "%02d ", local.tm_mday);
61 len += strlen(buf + len);
62 len += strftime(buf + len, sizeof(buf) - len, "%b %Y %H:%M:%S", &local);
63 g_snprintf(buf + len, sizeof(buf) - len, " %+03d%02d", diff_hour, diff_min);
65 return buf;
66 }
68 /* finds list of headers matching id
69 if id == HEAD_UNKNOWN and header == NULL finds all unknown headers
70 else finds all headers matching header
71 */
72 GList *find_header(GList *hdr_list, header_id id, gchar *hdr_str)
73 {
74 GList *found_list = NULL;
75 GList *node;
77 if((id != HEAD_UNKNOWN) || (hdr_str == NULL)){
78 foreach(hdr_list, node){
79 header *hdr = (header *)(node->data);
80 if(hdr->id == id)
81 found_list = g_list_append(found_list, hdr);
82 }
83 }else{
84 foreach(hdr_list, node){
85 header *hdr = (header *)(node->data);
86 gchar buf[64], *q = buf, *p = hdr->header;
88 while(*p != ':' && q < buf+63 && *p) *(q++) = *(p++);
89 *q = 0;
91 if(strcasecmp(buf, hdr_str) == 0)
92 found_list = g_list_append(found_list, hdr);
93 }
94 }
95 return found_list;
96 }
98 void header_unfold(header *hdr)
99 {
100 gchar *tmp_hdr = g_malloc(strlen(hdr->header));
101 gchar *p = hdr->header, *q = tmp_hdr;
102 gboolean flag = FALSE;
104 while(*p){
105 if(*p != '\n')
106 *(q++) = *p;
107 else
108 flag = TRUE;
109 p++;
110 }
111 *(q++) = '\n';
113 if(flag){
114 gchar *new_hdr;
116 g_free(hdr->header);
117 new_hdr = g_strdup(tmp_hdr);
118 g_free(tmp_hdr);
119 hdr->value = new_hdr + (hdr->value - hdr->header);
120 hdr->header = new_hdr;
121 }
122 }
124 #define MAX_HDR_LEN 72
125 void header_fold(header *hdr)
126 {
127 gint len = strlen(hdr->header);
128 gchar *p, *q;
129 /* size is probably overestimated, but so we are on the safe side */
130 gchar *tmp_hdr = g_malloc(len + 2*len/MAX_HDR_LEN);
132 p = hdr->header;
133 q = tmp_hdr;
135 if(p[len-1] == '\n')
136 p[len-1] = 0;
138 while(*p){
139 gint i,l;
140 gchar *pp;
142 /* look forward and find potential break points */
143 i = 0; l = -1;
144 pp = p;
145 while(*pp && (i < MAX_HDR_LEN)){
146 if((*pp == ' ') || (*pp == '\t'))
147 l = i;
148 pp++;
149 i++;
150 }
151 if(!*pp) l = pp-p; /* take rest, if EOS found */
153 if(l == -1){
154 /* no potential break point was found within MAX_HDR_LEN
155 so advance further until the next */
156 while(*pp && *pp != ' ' && *pp != '\t'){
157 pp++;
158 i++;
159 }
160 l = i;
161 }
163 /* copy */
164 i = 0;
165 while(i < l){
166 *(q++) = *(p++);
167 i++;
168 }
169 *(q++) = '\n';
170 *(q++) = *(p++); /* this is either space, tab or 0 */
171 }
172 {
173 gchar *new_hdr;
175 g_free(hdr->header);
176 new_hdr = g_strdup(tmp_hdr);
177 g_free(tmp_hdr);
178 hdr->value = new_hdr + (hdr->value - hdr->header);
179 hdr->header = new_hdr;
180 }
181 }
183 header *create_header(header_id id, gchar *fmt, ...)
184 {
185 gchar *p;
186 header *hdr;
187 va_list args;
188 va_start(args, fmt);
190 if((hdr = g_malloc(sizeof(header)))){
192 hdr->id = id;
193 hdr->header = g_strdup_vprintf(fmt, args);
194 hdr->value = NULL;
196 p = hdr->header;
197 while(*p && *p != ':') p++;
198 if(*p)
199 hdr->value = p+1;
200 }
202 va_end(args);
203 return hdr;
204 }
206 void destroy_header(header *hdr)
207 {
208 if(hdr){
209 if(hdr->header) g_free(hdr->header);
210 g_free(hdr);
211 }
212 }
214 header *copy_header(header *hdr)
215 {
216 header *new_hdr = NULL;
218 if(hdr){
219 if((new_hdr = g_malloc(sizeof(header)))){
220 new_hdr->id = hdr->id;
221 new_hdr->header = g_strdup(hdr->header);
222 new_hdr->value = new_hdr->header + (hdr->value - hdr->header);
223 }
224 }
225 return new_hdr;
226 }
228 header *get_header(gchar *line)
229 {
230 gchar *p = line;
231 gchar buf[64], *q = buf;
232 gint i;
233 header *hdr;
235 while(*p && (*p != ':') && (q < buf+63)) *(q++) = *(p++);
236 *q = 0;
238 if(*p != ':') return NULL;
240 hdr = g_malloc(sizeof(header));
242 hdr->value = NULL;
243 p++;
245 while(*p && (*p == ' ' || *p == '\t')) p++;
246 hdr->value = p;
248 for(i = 0; i < HEAD_NUM_IDS; i++){
249 if(strcasecmp(header_names[i].header, buf) == 0)
250 break;
251 }
252 hdr->id = (header_id)i;
253 hdr->header = g_strdup(line);
254 hdr->value = hdr->header + (hdr->value - line);
256 DEBUG(4) debugf("header: %d = %s", hdr->id, hdr->header);
258 return hdr;
259 }