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#include <sys/types.h>
#include <err.h>
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "util.h"
static char *line;
static size_t linesize;
static char host[256], *user, mtimebuf[32];
static const uint32_t seed = 1167266473;
#define ROT32(x, y) ((x << y) | (x >> (32 - y)))
uint32_t
murmur3_32(const char *key, uint32_t len, uint32_t seed)
{
static const uint32_t c1 = 0xcc9e2d51;
static const uint32_t c2 = 0x1b873593;
static const uint32_t r1 = 15;
static const uint32_t r2 = 13;
static const uint32_t m = 5;
static const uint32_t n = 0xe6546b64;
uint32_t hash = seed;
const int nblocks = len / 4;
const uint32_t *blocks = (const uint32_t *) key;
int i;
uint32_t k, k1;
const uint8_t *tail;
for (i = 0; i < nblocks; i++) {
k = blocks[i];
k *= c1;
k = ROT32(k, r1);
k *= c2;
hash ^= k;
hash = ROT32(hash, r2) * m + n;
}
tail = (const uint8_t *) (key + nblocks * 4);
k1 = 0;
switch (len & 3) {
case 3:
k1 ^= tail[2] << 16;
case 2:
k1 ^= tail[1] << 8;
case 1:
k1 ^= tail[0];
k1 *= c1;
k1 = ROT32(k1, r1);
k1 *= c2;
hash ^= k1;
}
hash ^= len;
hash ^= (hash >> 16);
hash *= 0x85ebca6b;
hash ^= (hash >> 13);
hash *= 0xc2b2ae35;
hash ^= (hash >> 16);
return hash;
}
/* Unescape / decode fields printed by string_print_encoded()
* "\\" to "\", "\t", to TAB, "\n" to newline. Unrecognised escape sequences
* are ignored: "\z" etc. Mangle "From " in mboxrd style (always prefix >). */
static void
printcontent(const char *s, FILE *fp)
{
if (!strncmp(s, "From ", 5))
fputc('>', fp);
read:
for (; *s; s++) {
switch (*s) {
case '\\':
switch (*(++s)) {
case '\0': return; /* ignore */
case '\\': fputc('\\', fp); break;
case 't': fputc('\t', fp); break;
case 'n':
fputc('\n', fp);
for (s++; *s == '>'; s++)
fputc('>', fp);
/* escape "From ", mboxrd-style. */
if (!strncmp(s, "From ", 5))
fputc('>', fp);
goto read;
}
break;
case '\n':
fputc((int)*s, fp);
for (s++; *s == '>'; s++)
fputc('>', fp);
/* escape "From ", mboxrd-style. */
if (!strncmp(s, "From ", 5))
fputc('>', fp);
goto read;
default:
fputc((int)*s, fp);
}
}
}
static void
printfeed(FILE *fp, const char *feedname)
{
struct tm tm;
char *fields[FieldLast], timebuf[32];
time_t parsedtime;
ssize_t linelen;
while ((linelen = getline(&line, &linesize, fp)) > 0) {
if (line[linelen - 1] == '\n')
line[--linelen] = '\0';
if (!parseline(line, fields))
break;
parsedtime = 0;
if (strtotime(fields[FieldUnixTimestamp], &parsedtime))
continue;
/* can't convert: default to formatted time for time_t 0. */
if (!gmtime_r(&parsedtime, &tm) ||
!strftime(timebuf, sizeof(timebuf),
"%a, %d %b %Y %H:%M +0000", &tm))
strlcpy(timebuf, "Thu, 01 Jan 1970 00:00 +0000",
sizeof(timebuf));
/* mbox + mail header */
printf("From MAILER-DAEMON %s\n", mtimebuf);
printf("Date: %s\n", timebuf);
printf("From: %s <sfeed@>\n", fields[FieldAuthor][0] ? fields[FieldAuthor] : "unknown");
printf("To: %s <%s@%s>\n", user, user, host);
if (feedname[0])
printf("Subject: [%s] %s\n", feedname, fields[FieldTitle]);
else
printf("Subject: %s\n", fields[FieldTitle]);
printf("Message-ID: <%s%s%"PRIu32"@%s>\n",
fields[FieldUnixTimestamp],
fields[FieldUnixTimestamp][0] ? "." : "",
murmur3_32(line, (size_t)linelen, seed),
feedname);
printf("Content-Type: text/%s; charset=UTF-8\n", fields[FieldContentType]);
printf("Content-Transfer-Encoding: binary\n");
printf("X-Feedname: %s\n\n", feedname);
if (!strcmp(fields[FieldContentType], "html")) {
fputs("<p>Link: <a href=\"", stdout);
xmlencode(fields[FieldLink], stdout);
fputs("\">", stdout);
fputs(fields[FieldLink], stdout);
fputs("</a></p>\n\n", stdout);
printcontent(fields[FieldContent], stdout);
} else {
printf("Link: %s\n\n", fields[FieldLink]);
printcontent(fields[FieldContent], stdout);
}
fputs("\n\n", stdout);
}
}
int
main(int argc, char *argv[])
{
struct tm tm;
time_t t;
FILE *fp;
char *name;
int i;
if (pledge(argc == 1 ? "stdio" : "stdio rpath", NULL) == -1)
err(1, "pledge");
if (!(user = getenv("USER")))
user = "you";
if (gethostname(host, sizeof(host)) == -1)
err(1, "gethostname");
if ((t = time(NULL)) == -1)
err(1, "time");
if (!gmtime_r(&t, &tm))
errx(1, "gmtime_r: can't get current time");
if (!strftime(mtimebuf, sizeof(mtimebuf), "%a %b %d %H:%M:%S %Y", &tm))
errx(1, "strftime: can't format current time");
if (argc == 1) {
printfeed(stdin, "");
} else {
for (i = 1; i < argc; i++) {
if (!(fp = fopen(argv[i], "r")))
err(1, "fopen: %s", argv[i]);
name = ((name = strrchr(argv[i], '/'))) ? name + 1 : argv[i];
printfeed(fp, name);
if (ferror(fp))
err(1, "ferror: %s", argv[i]);
fclose(fp);
}
}
return 0;
}
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