masqmail

view src/header.c @ 249:f9da5a7caeda

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refactored the cmdline argument processing I replaced the nested switch statements with one single large else-if construct. Instead of char comparision now str(n)cmp(3) is used. Although this is slower it is much more readable and covers corner-cases which were uncovered before (e.g. -bdxxx). As always: Readability and simplicity matter, not performance.
author markus schnalke <meillo@marmaro.de>
date Thu, 04 Nov 2010 11:02:42 -0300
parents 3708b655a371
children 55c530a83d51
line source
1 /* MasqMail
2 Copyright (C) 2000 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 #include "masqmail.h"
19
20 header_name header_names[] = {
21 {"From", HEAD_FROM,},
22 {"Sender", HEAD_SENDER,},
23 {"To", HEAD_TO,},
24 {"Cc", HEAD_CC,},
25 {"Bcc", HEAD_BCC,},
26 {"Date", HEAD_DATE,},
27 {"Message-Id", HEAD_MESSAGE_ID,},
28 {"Reply-To", HEAD_REPLY_TO,},
29 {"Subject", HEAD_SUBJECT,},
30 {"Return-Path", HEAD_RETURN_PATH,},
31 {"Envelope-To", HEAD_ENVELOPE_TO,},
32 {"Received", HEAD_RECEIVED},
33 };
34
35 /* this was borrowed from exim and slightly changed */
36 gchar*
37 rec_timestamp()
38 {
39 static gchar buf[64];
40 int len;
41
42 time_t now = time(NULL);
43 struct tm *t = localtime(&now);
44
45 int diff_hour, diff_min;
46 struct tm local;
47 struct tm *gmt;
48
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);
58
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);
64
65 return buf;
66 }
67
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*
73 find_header(GList * hdr_list, header_id id, gchar * hdr_str)
74 {
75 GList *found_list = NULL;
76 GList *node;
77
78 if ((id != HEAD_UNKNOWN) || (hdr_str == NULL)) {
79 foreach(hdr_list, node) {
80 header *hdr = (header *) (node->data);
81 if (hdr->id == id)
82 found_list = g_list_append(found_list, hdr);
83 }
84 } else {
85 foreach(hdr_list, node) {
86 header *hdr = (header *) (node->data);
87 gchar buf[64], *q = buf, *p = hdr->header;
88
89 while (*p != ':' && q < buf + 63 && *p)
90 *(q++) = *(p++);
91 *q = '\0';
92
93 if (strcasecmp(buf, hdr_str) == 0)
94 found_list = g_list_append(found_list, hdr);
95 }
96 }
97 return found_list;
98 }
99
100 void
101 header_unfold(header * hdr)
102 {
103 gchar *tmp_hdr = g_malloc(strlen(hdr->header));
104 gchar *p = hdr->header, *q = tmp_hdr;
105 gboolean flag = FALSE;
106
107 while (*p) {
108 if (*p != '\n')
109 *(q++) = *p;
110 else
111 flag = TRUE;
112 p++;
113 }
114 *(q++) = '\n';
115
116 if (flag) {
117 gchar *new_hdr;
118
119 g_free(hdr->header);
120 new_hdr = g_strdup(tmp_hdr);
121 g_free(tmp_hdr);
122 hdr->value = new_hdr + (hdr->value - hdr->header);
123 hdr->header = new_hdr;
124 }
125 }
126
127 #define MAX_HDR_LEN 72
128 void
129 header_fold(header * hdr)
130 {
131 gint len = strlen(hdr->header);
132 gchar *p, *q;
133 /* size is probably overestimated, but so we are on the safe side */
134 gchar *tmp_hdr = g_malloc(len + 2 * len / MAX_HDR_LEN);
135
136 p = hdr->header;
137 q = tmp_hdr;
138
139 if (p[len - 1] == '\n')
140 p[len - 1] = '\0';
141
142 while (*p) {
143 gint i, l;
144 gchar *pp;
145
146 /* look forward and find potential break points */
147 i = 0;
148 l = -1;
149 pp = p;
150 while (*pp && (i < MAX_HDR_LEN)) {
151 if ((*pp == ' ') || (*pp == '\t'))
152 l = i;
153 pp++;
154 i++;
155 }
156 if (!*pp)
157 l = pp - p; /* take rest, if EOS found */
158
159 if (l == -1) {
160 /* no potential break point was found within MAX_HDR_LEN so advance further until the next */
161 while (*pp && *pp != ' ' && *pp != '\t') {
162 pp++;
163 i++;
164 }
165 l = i;
166 }
167
168 /* copy */
169 i = 0;
170 while (i < l) {
171 *(q++) = *(p++);
172 i++;
173 }
174 *(q++) = '\n';
175 *(q++) = *(p++); /* this is either space, tab or 0 */
176 }
177 {
178 gchar *new_hdr;
179
180 g_free(hdr->header);
181 new_hdr = g_strdup(tmp_hdr);
182 g_free(tmp_hdr);
183 hdr->value = new_hdr + (hdr->value - hdr->header);
184 hdr->header = new_hdr;
185 }
186 }
187
188 header*
189 create_header(header_id id, gchar * fmt, ...)
190 {
191 gchar *p;
192 header *hdr;
193 va_list args;
194 va_start(args, fmt);
195
196 if ((hdr = g_malloc(sizeof(header)))) {
197
198 hdr->id = id;
199 hdr->header = g_strdup_vprintf(fmt, args);
200 hdr->value = NULL;
201
202 p = hdr->header;
203 while (*p && *p != ':')
204 p++;
205 if (*p)
206 hdr->value = p + 1;
207 }
208
209 va_end(args);
210 return hdr;
211 }
212
213 void
214 destroy_header(header * hdr)
215 {
216 if (hdr) {
217 if (hdr->header)
218 g_free(hdr->header);
219 g_free(hdr);
220 }
221 }
222
223 header*
224 copy_header(header * hdr)
225 {
226 header *new_hdr = NULL;
227
228 if (hdr) {
229 if ((new_hdr = g_malloc(sizeof(header)))) {
230 new_hdr->id = hdr->id;
231 new_hdr->header = g_strdup(hdr->header);
232 new_hdr->value = new_hdr->header + (hdr->value - hdr->header);
233 }
234 }
235 return new_hdr;
236 }
237
238 header*
239 get_header(gchar * line)
240 {
241 gchar *p = line;
242 gchar buf[64], *q = buf;
243 gint i;
244 header *hdr;
245
246 while (*p && (*p != ':') && (q < buf + 63))
247 *(q++) = *(p++);
248 *q = '\0';
249
250 if (*p != ':')
251 return NULL;
252
253 hdr = g_malloc(sizeof(header));
254
255 hdr->value = NULL;
256 p++;
257
258 while (*p && (*p == ' ' || *p == '\t'))
259 p++;
260 hdr->value = p;
261
262 for (i = 0; i < HEAD_NUM_IDS; i++) {
263 if (strcasecmp(header_names[i].header, buf) == 0)
264 break;
265 }
266 hdr->id = (header_id) i;
267 hdr->header = g_strdup(line);
268 hdr->value = hdr->header + (hdr->value - line);
269
270 DEBUG(4) debugf("header: %d = %s", hdr->id, hdr->header);
271
272 return hdr;
273 }