1 # include <errno.h>
2 # include "sendmail.h"
3 
4 static char	SccsId[] = "@(#)collect.c	3.26	10/26/81";
5 
6 /*
7 **  COLLECT -- read & parse message header & make temp file.
8 **
9 **	Creates a temporary file name and copies the standard
10 **	input to that file.  While it is doing it, it looks for
11 **	"From:" and "Sender:" fields to use as the from-person
12 **	(but only if the -a flag is specified).  It prefers to
13 **	to use the "Sender:" field.
14 **
15 **	MIT seems to like to produce "Sent-By:" fields instead
16 **	of "Sender:" fields.  We used to catch this, but it turns
17 **	out that the "Sent-By:" field doesn't always correspond
18 **	to someone real ("___057", for instance), as required by
19 **	the protocol.  So we limp by.....
20 **
21 **	Parameters:
22 **		none
23 **
24 **	Returns:
25 **		none.
26 **
27 **	Side Effects:
28 **		Temp file is created and filled.
29 **		The from person may be set.
30 */
31 
32 long	MsgSize;		/* size of message in bytes */
33 
34 collect()
35 {
36 	register FILE *tf;
37 	char buf[MAXFIELD+1];
38 	register char *p;
39 	char *xfrom;
40 	extern char *hvalue();
41 	extern char *mktemp();
42 	static char tempfname[40];
43 	extern char *QueueDir;
44 
45 	/*
46 	**  Create the temp file name and create the file.
47 	*/
48 
49 	strcpy(tempfname, QueueDir);
50 	strcat(tempfname, "/dfaXXXXXX");
51 	(void) mktemp(tempfname);
52 	(void) close(creat(tempfname, 0600));
53 	if ((tf = fopen(tempfname, "w")) == NULL)
54 	{
55 		syserr("Cannot create %s", tempfname);
56 		return;
57 	}
58 	InFileName = tempfname;
59 
60 	/*
61 	**  Tell ARPANET to go ahead.
62 	*/
63 
64 	if (ArpaMode == ARPA_MAIL)
65 	{
66 		extern char Arpa_Enter[];
67 
68 		message(Arpa_Enter, "Enter mail, end with \".\" on a line by itself");
69 	}
70 
71 	/*
72 	**  Try to read a UNIX-style From line
73 	*/
74 
75 	if (fgets(buf, sizeof buf, stdin) == NULL)
76 		return;
77 	fixcrlf(buf, FALSE);
78 # ifndef NOTUNIX
79 	if (!SaveFrom && strncmp(buf, "From ", 5) == 0)
80 	{
81 		eatfrom(buf);
82 		(void) fgets(buf, sizeof buf, stdin);
83 		fixcrlf(buf, FALSE);
84 	}
85 # endif NOTUNIX
86 
87 	/*
88 	**  Copy stdin to temp file & do message editting.
89 	**	To keep certain mailers from getting confused,
90 	**	and to keep the output clean, lines that look
91 	**	like UNIX "From" lines are deleted in the header,
92 	**	and prepended with ">" in the body.
93 	*/
94 
95 	for (; !feof(stdin); !feof(stdin) && fgets(buf, sizeof buf, stdin) != NULL)
96 	{
97 		register char c;
98 		extern bool isheader();
99 
100 		fixcrlf(buf, FALSE);
101 
102 		/* see if the header is over */
103 		if (!isheader(buf))
104 			break;
105 
106 		/* get the rest of this field */
107 		while ((c = getc(stdin)) == ' ' || c == '\t')
108 		{
109 			p = &buf[strlen(buf)];
110 			*p++ = c;
111 			if (fgets(p, sizeof buf - (p - buf), stdin) == NULL)
112 				break;
113 			fixcrlf(p, FALSE);
114 		}
115 		if (!feof(stdin))
116 			(void) ungetc(c, stdin);
117 
118 		MsgSize += strlen(buf);
119 
120 		/*
121 		**  Snarf header away.
122 		*/
123 
124 		if (bitset(H_EOH, chompheader(buf, FALSE)))
125 			break;
126 	}
127 
128 # ifdef DEBUG
129 	if (Debug)
130 		printf("EOH\n");
131 # endif DEBUG
132 
133 	/* throw away a blank line */
134 	if (buf[0] == '\n')
135 	{
136 		(void) fgets(buf, sizeof buf, stdin);
137 		fixcrlf(buf, FALSE);
138 	}
139 
140 	/*
141 	**  Collect the body of the message.
142 	*/
143 
144 	for (; !feof(stdin); !feof(stdin) && fgets(buf, sizeof buf, stdin) != NULL)
145 	{
146 		register int i;
147 		register char *bp = buf;
148 
149 		fixcrlf(buf, FALSE);
150 
151 		/* check for end-of-message */
152 		if (!IgnrDot && buf[0] == '.' && (buf[1] == '\n' || buf[1] == '\0'))
153 			break;
154 
155 		/* check for transparent dot */
156 		if (Smtp && *bp == '.')
157 			bp++;
158 
159 # ifndef NOTUNIX
160 		/* Hide UNIX-like From lines */
161 		if (strncmp(bp, "From ", 5) == 0)
162 		{
163 			fputs(">", tf);
164 			MsgSize++;
165 		}
166 # endif NOTUNIX
167 
168 		/*
169 		**  Figure message length, output the line to the temp
170 		**  file, and insert a newline if missing.
171 		*/
172 
173 		i = strlen(bp);
174 		MsgSize += i;
175 		fputs(bp, tf);
176 		if (bp[i - 1] != '\n')
177 			fputs("\n", tf);
178 		if (ferror(tf))
179 		{
180 			if (errno == ENOSPC)
181 			{
182 				(void) freopen(InFileName, "w", tf);
183 				fputs("\nMAIL DELETED BECAUSE OF LACK OF DISK SPACE\n\n", tf);
184 				usrerr("452 Out of disk space for temp file");
185 			}
186 			else
187 				syserr("collect: Cannot write %s", InFileName);
188 			(void) freopen("/dev/null", "w", tf);
189 		}
190 	}
191 	(void) fclose(tf);
192 
193 	/*
194 	**  Find out some information from the headers.
195 	**	Examples are who is the from person & the date.
196 	*/
197 
198 	/* message priority */
199 	p = hvalue("priority");
200 	if (p != NULL)
201 		MsgPriority = priencode(p);
202 
203 	/* from person */
204 	xfrom = hvalue("sender");
205 	if (xfrom == NULL)
206 		xfrom = OrigFrom;
207 	if (ArpaMode != ARPA_NONE)
208 		setfrom(xfrom, (char *) NULL);
209 
210 	/* full name of from person */
211 	p = hvalue("full-name");
212 	if (p != NULL)
213 		define('x', p);
214 	else
215 	{
216 		register char *q;
217 
218 		/*
219 		**  Try to extract the full name from a general From:
220 		**  field.  We take anything which is a comment as a
221 		**  first choice.  Failing in that, we see if there is
222 		**  a "machine readable" name (in <angle brackets>); if
223 		**  so we take anything preceeding that clause.
224 		**
225 		**  If we blow it here it's not all that serious.
226 		*/
227 
228 		p = hvalue("original-from");
229 		if (p == NULL)
230 			p = OrigFrom;
231 		q = index(p, '(');
232 		if (q != NULL)
233 		{
234 			int parenlev = 0;
235 
236 			for (p = q; *p != '\0'; p++)
237 			{
238 				if (*p == '(')
239 					parenlev++;
240 				else if (*p == ')' && --parenlev <= 0)
241 					break;
242 			}
243 			if (*p == ')')
244 			{
245 				*p = '\0';
246 				if (*++q != '\0')
247 					define('x', newstr(q));
248 				*p = ')';
249 			}
250 		}
251 		else if ((q = index(p, '<')) != NULL)
252 		{
253 			char savec;
254 
255 			while (*--q == ' ')
256 				continue;
257 			while (isspace(*p))
258 				p++;
259 			savec = *++q;
260 			*q = '\0';
261 			if (*p != '\0')
262 				define('x', newstr(p));
263 			*q = savec;
264 		}
265 	}
266 
267 	/* date message originated */
268 	p = hvalue("posted-date");
269 	if (p == NULL)
270 		p = hvalue("date");
271 	if (p != NULL)
272 	{
273 		define('a', p);
274 		/* we don't have a good way to do canonical conversion ....
275 		define('d', newstr(arpatounix(p)));
276 		.... so we will ignore the problem for the time being */
277 	}
278 
279 	if ((TempFile = fopen(InFileName, "r")) == NULL)
280 		syserr("Cannot reopen %s", InFileName);
281 
282 # ifdef DEBUG
283 	if (Debug)
284 	{
285 		HDR *h;
286 		extern char *capitalize();
287 
288 		printf("----- collected header -----\n");
289 		for (h = Header; h != NULL; h = h->h_link)
290 			printf("%s: %s\n", capitalize(h->h_field), h->h_value);
291 		printf("----------------------------\n");
292 	}
293 # endif DEBUG
294 	return;
295 }
296 /*
297 **  EATFROM -- chew up a UNIX style from line and process
298 **
299 **	This does indeed make some assumptions about the format
300 **	of UNIX messages.
301 **
302 **	Parameters:
303 **		fm -- the from line.
304 **
305 **	Returns:
306 **		none.
307 **
308 **	Side Effects:
309 **		extracts what information it can from the header,
310 **		such as the date.
311 */
312 
313 # ifndef NOTUNIX
314 
315 char	*DowList[] =
316 {
317 	"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", NULL
318 };
319 
320 char	*MonthList[] =
321 {
322 	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
323 	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
324 	NULL
325 };
326 
327 eatfrom(fm)
328 	char *fm;
329 {
330 	register char *p;
331 	register char **dt;
332 
333 # ifdef DEBUG
334 	if (Debug > 1)
335 		printf("eatfrom(%s)\n", fm);
336 # endif DEBUG
337 
338 	/* find the date part */
339 	p = fm;
340 	while (*p != '\0')
341 	{
342 		/* skip a word */
343 		while (*p != '\0' && *p != ' ')
344 			*p++;
345 		while (*p == ' ')
346 			*p++;
347 		if (!isupper(*p) || p[3] != ' ' || p[13] != ':' || p[16] != ':')
348 			continue;
349 
350 		/* we have a possible date */
351 		for (dt = DowList; *dt != NULL; dt++)
352 			if (strncmp(*dt, p, 3) == 0)
353 				break;
354 		if (*dt == NULL)
355 			continue;
356 
357 		for (dt = MonthList; *dt != NULL; dt++)
358 			if (strncmp(*dt, &p[4], 3) == 0)
359 				break;
360 		if (*dt != NULL)
361 			break;
362 	}
363 
364 	if (*p != NULL)
365 	{
366 		char *q;
367 
368 		/* we have found a date */
369 		q = xalloc(25);
370 		strncpy(q, p, 25);
371 		q[24] = '\0';
372 		define('d', q);
373 	}
374 }
375 
376 # endif NOTUNIX
377 /*
378 **  PRIENCODE -- encode external priority names into internal values.
379 **
380 **	Parameters:
381 **		p -- priority in ascii.
382 **
383 **	Returns:
384 **		priority as a numeric level.
385 **
386 **	Side Effects:
387 **		none.
388 */
389 
390 struct prio
391 {
392 	char	*pri_name;	/* external name of priority */
393 	int	pri_val;	/* internal value for same */
394 };
395 
396 static struct prio	Prio[] =
397 {
398 	"normal",		PRI_NORMAL,
399 	"quick",		PRI_QUICK,
400 	"priority",		PRI_PRIORITY,
401 	"first-class",		PRI_NORMAL,
402 	"second-class",		PRI_SECONDCL,
403 	"third-class",		PRI_THIRDCL,
404 	NULL,			PRI_NORMAL,
405 };
406 
407 priencode(p)
408 	char *p;
409 {
410 	register struct prio *pl;
411 
412 	for (pl = Prio; pl->pri_name != NULL; pl++)
413 	{
414 		if (strcmp(p, pl->pri_name) == 0)
415 			break;
416 	}
417 	return (pl->pri_val);
418 }
419