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#include <sys/stat.h>
#include <sys/types.h>
#include <ctype.h>
#include <errno.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "blaze822.h"
static int aflag;
static int cflag;
static int dflag;
static int hflag;
static int iflag;
static int lflag;
static int oflag;
static int pflag;
static int qflag;
static int vflag;
static long mflag;
static long matches;
static regex_t pattern;
static char *header;
static char *curfile;
int
match(char *file, char *hdr, char *s)
{
if (oflag && !cflag && !qflag && !vflag && !lflag) {
regmatch_t pmatch;
int len, matched;
matched = 0;
while (*s && regexec(&pattern, s, 1, &pmatch, 0) == 0) {
s += pmatch.rm_so;
if (!(len = pmatch.rm_eo-pmatch.rm_so)) {
s += 1;
continue;
}
if (pflag)
printf("%s: %s: ", file, hdr);
else if (hflag)
printf("%s: ", hdr);
printf("%.*s\n", len, s);
s += len;
matched++;
}
return (matched && matches++);
} else if (vflag ^ (regexec(&pattern, s, 0, 0, 0) == 0)) {
if (qflag)
exit(0);
matches++;
if (!cflag) {
if (vflag || !hflag)
printf("%s", file);
if (pflag && !vflag)
printf(": %s: %s", hdr, s);
else if (hflag && !vflag)
printf("%s: %s", hdr, s);
putchar('\n');
}
if (mflag && matches >= mflag)
exit(0);
return 1;
}
return 0;
}
blaze822_mime_action
match_part(int depth, struct message *msg, char *body, size_t bodylen)
{
(void)depth;
char *ct = blaze822_hdr(msg, "content-type");
blaze822_mime_action r = MIME_CONTINUE;
if (!ct || strncmp(ct, "text/plain", 10) == 0) {
char *charset = 0, *cs, *cse;
if (blaze822_mime_parameter(ct, "charset", &cs, &cse))
charset = strndup(cs, cse-cs);
if (!charset ||
strcasecmp(charset, "utf-8") == 0 ||
strcasecmp(charset, "utf8") == 0 ||
strcasecmp(charset, "us-ascii") == 0) {
if ((hflag || pflag) && !cflag && !oflag && !vflag) {
char *s, *p;
for (p = s = body; p < body+bodylen+1; p++) {
if (*p == '\r' || *p == '\n') {
*p = 0;
if (p-s > 1)
match(curfile, "/", s);
s = p+1;
}
}
} else if (match(curfile, "/", body)) {
r = MIME_STOP;
}
} else {
/* XXX decode here */
}
free(charset);
}
return r;
}
void
match_body(char *file)
{
char *filename;
filename = curfile = file;
while (*filename == ' ' || *filename == '\t')
filename++;
struct message *msg = blaze822_file(filename);
if (!msg)
return;
blaze822_walk_mime(msg, 0, match_part);
blaze822_free(msg);
}
int
match_value(char *file, char *h, char *v)
{
if (dflag) {
char d[4096];
blaze822_decode_rfc2047(d, v, sizeof d, "UTF-8");
return match(file, h, d);
} else if (aflag) {
char *disp, *addr;
while ((v = blaze822_addr(v, &disp, &addr))) {
if (addr && match(file, h, addr))
return 1;
}
} else {
return match(file, h, v);
}
return 0;
}
void
magrep(char *file)
{
if (!*header) {
char *flags = strstr(file, ":2,");
if (flags)
match(file, "flags", flags+3);
return;
} else if (strcmp(header, "/") == 0) {
match_body(file);
return;
}
char *filename = file;
while (*filename == ' ' || *filename == '\t')
filename++;
struct message *msg = blaze822(filename);
if (!msg)
return;
if (strcmp(header, "*") == 0) {
char *hdr = 0;
while ((hdr = blaze822_next_header(msg, hdr))) {
char *v = strchr(hdr, ':');
if (v) {
*v = 0;
if (match_value(file, hdr, v + 1 + (v[1] == ' ')) && lflag)
break;
*v = ':';
}
}
} else {
char *v = blaze822_chdr(msg, header);
if (v)
(void)match_value(file, header, v);
}
blaze822_free(msg);
}
int
main(int argc, char *argv[])
{
int c;
while ((c = getopt(argc, argv, "acdhilm:opqv")) != -1)
switch (c) {
case 'a': aflag = 1; break;
case 'c': cflag = 1; break;
case 'd': dflag = 1; break;
case 'h': hflag = 1; break;
case 'i': iflag = REG_ICASE; break;
case 'l': lflag = 1; break;
case 'm': mflag = atol(optarg); break;
case 'o': oflag = 1; break;
case 'p': pflag = 1; break;
case 'q': qflag = 1; break;
case 'v': vflag = 1; break;
default:
usage:
fprintf(stderr,
"Usage: magrep [-c|-h|-o|-p|-q|-m max] [-v] [-i] [-l] [-a|-d] header:regex [msgs...]\n");
exit(2);
}
if (argc == optind)
goto usage;
header = argv[optind++];
char *rx = strchr(header, ':');
if (!rx)
goto usage;
*rx++ = 0;
int r = regcomp(&pattern, rx, REG_EXTENDED | iflag);
if (r != 0) {
char buf[256];
regerror(r, &pattern, buf, sizeof buf);
fprintf(stderr, "magrep: regex error: %s\n", buf);
exit(2);
}
if (argc == optind && isatty(0))
blaze822_loop1(":", magrep);
else
blaze822_loop(argc-optind, argv+optind, magrep);
if (cflag && !qflag && !mflag)
printf("%ld\n", matches);
return !matches;
}
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