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#include <sys/types.h>
#include <err.h>
#include <inttypes.h>
#include <limits.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 = NULL;
static size_t linesize = 0;
/* jenkins one-at-a-time hash, used for Message-Id */
static uint32_t
jenkins1(const char *s)
{
uint32_t hash = 0;
for (; *s; s++) {
hash += (int)*s;
hash += (hash << 10);
hash ^= (hash >> 6);
}
hash += (hash << 3);
hash ^= (hash >> 11);
return hash + (hash << 15);
}
/* 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);
for (; *s; s++) {
read:
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 == '>'; s++)
fputc('>', fp);
/* escape "From ", mboxrd-style. */
if (!strncmp(s, "From ", 5))
fputc('>', fp);
goto read;
}
break;
case '\0': return; /* ignore */
case '\n':
fputc((int)*s, fp);
for (s++; *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], mtimebuf[32];
char host[HOST_NAME_MAX + 1], *user;
time_t parsedtime;
if (!(user = getenv("USER")))
user = "you";
if (gethostname(host, sizeof(host)) == -1)
err(1, "gethostname");
if ((parsedtime = time(NULL)) == -1)
err(1, "time");
if (!gmtime_r(&parsedtime, &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, "can't format current time");
while (parseline(&line, &linesize, fields, fp) > 0) {
parsedtime = 0;
strtotime(fields[FieldUnixTimestamp], &parsedtime);
/* 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"
"Date: %s\n"
"From: %s <sfeed@>\n"
"To: %s <%s@%s>\n"
"Subject: %s\n"
"Message-ID: <%s%s%"PRIu32"@sfeed>\n"
"Content-Type: text/%s; charset=UTF-8\n"
"Content-Transfer-Encoding: binary\n"
"X-Feedname: %s\n"
"\n",
mtimebuf, timebuf,
fields[FieldAuthor][0] ? fields[FieldAuthor] : "anonymous",
user, user, host, fields[FieldTitle],
fields[FieldUnixTimestamp],
fields[FieldUnixTimestamp][0] ? "." : "",
jenkins1(fields[FieldTitle]),
fields[FieldContentType], 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[])
{
FILE *fp;
char *name;
int i;
if (argc == 1) {
printfeed(stdin, "");
} else {
for (i = 1; i < argc; i++) {
fp = fopen(argv[i], "r");
if (!fp)
err(1, "fopen: %s", argv[i]);
name = xbasename(argv[i]);
printfeed(fp, name);
free(name);
if (ferror(fp))
err(1, "ferror: %s", argv[i]);
fclose(fp);
}
}
return 0;
}
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