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added -M<m> age option for document age, using picohttpparser from h2o (maybe handy

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later to make a more robust header condition checker?)
This commit is contained in:
Andreas Baumann 2017-04-14 21:10:40 +02:00 committed by Sven Nierlein
parent bbec77c7ec
commit 9960c56e5e
5 changed files with 912 additions and 7 deletions
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1
.gitignore vendored
View file

@ -202,6 +202,7 @@ NP-VERSION-FILE
/plugins/negate
/plugins/stamp-h*
/plugins/urlize
/plugins/libpicohttpparser.a
# /plugins/t/
/plugins/t/*.tmp

6
plugins/Makefile.am
View file

@ -44,11 +44,13 @@ EXTRA_DIST = t tests
PLUGINHDRS = common.h
noinst_LIBRARIES = libnpcommon.a
noinst_LIBRARIES = libnpcommon.a libpicohttpparser.a
libnpcommon_a_SOURCES = utils.c netutils.c sslutils.c runcmd.c \
popen.c utils.h netutils.h popen.h common.h runcmd.c runcmd.h
libpicohttpparser_a_SOURCES = picohttpparser.c
BASEOBJS = libnpcommon.a ../lib/libmonitoringplug.a ../gl/libgnu.a
NETOBJS = $(BASEOBJS) $(EXTRA_NETOBLS)
NETLIBS = $(NETOBJS) $(SOCKETLIBS)
@ -71,7 +73,7 @@ check_apt_LDADD = $(BASEOBJS)
check_cluster_LDADD = $(BASEOBJS)
check_curl_CFLAGS = $(AM_CFLAGS) $(LIBCURLCFLAGS)
check_curl_CPPFLAGS = $(AM_CPPFLAGS) $(LIBCURLINCLUDE)
check_curl_LDADD = $(NETLIBS) $(LIBCURLLIBS) $(SSLOBJS)
check_curl_LDADD = $(NETLIBS) $(LIBCURLLIBS) $(SSLOBJS) libpicohttpparser.a
check_dbi_LDADD = $(NETLIBS) $(DBILIBS)
check_dig_LDADD = $(NETLIBS)
check_disk_LDADD = $(BASEOBJS)

203
plugins/check_curl.c
View file

@ -37,6 +37,8 @@ const char *progname = "check_curl";
const char *copyright = "2006-2017";
const char *email = "devel@monitoring-plugins.org";
#include <ctype.h>
#include "common.h"
#include "utils.h"
@ -47,6 +49,8 @@ const char *email = "devel@monitoring-plugins.org";
#include "curl/curl.h"
#include "curl/easy.h"
#include "picohttpparser.h"
#define MAKE_LIBCURL_VERSION(major, minor, patch) ((major)*0x10000 + (minor)*0x100 + (patch))
#define DEFAULT_BUFFER_SIZE 2048
@ -73,7 +77,7 @@ typedef struct {
int http_code; /* HTTP return code as in RFC 2145 */
int http_subcode; /* Microsoft IIS extension, HTTP subcodes, see
* http://support.microsoft.com/kb/318380/en-us */
char *msg; /* the human readable message */
const char *msg; /* the human readable message */
char *first_line; /* a copy of the first line */
} curlhelp_statusline;
@ -142,6 +146,7 @@ char *client_privkey = NULL;
char *ca_cert = NULL;
X509 *cert = NULL;
int no_body = FALSE;
int maximum_age = -1;
int address_family = AF_UNSPEC;
int process_arguments (int, char**);
@ -156,6 +161,9 @@ void curlhelp_freebuffer (curlhelp_curlbuf*);
int curlhelp_parse_statusline (const char*, curlhelp_statusline *);
void curlhelp_free_statusline (curlhelp_statusline *);
char *perfd_time_ssl (double microsec);
char *get_header_value (const struct phr_header* headers, const size_t nof_headers, const char* header);
static time_t parse_time_string (const char *string);
int check_document_dates (const curlhelp_curlbuf *, char (*msg)[DEFAULT_BUFFER_SIZE]);
void remove_newlines (char *);
void test_file (char *);
@ -391,7 +399,7 @@ check_http (void)
/* Curl errors, result in critical Nagios state */
if (res != CURLE_OK) {
remove_newlines (errbuf);
snprintf (msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host on port %d: cURL returned %d - %s\n"),
snprintf (msg, DEFAULT_BUFFER_SIZE, _("Invalid HTTP response received from host on port %d: cURL returned %d - %s"),
server_port, res, curl_easy_strerror(res));
die (STATE_CRITICAL, "HTTP CRITICAL - %s\n", msg);
}
@ -506,6 +514,10 @@ check_http (void)
status_line.http_code, status_line.msg, code);
}
if (maximum_age >= 0) {
result = max_state_alt(check_document_dates(&header_buf, &msg), result);
}
/* Page and Header content checks go here */
if (strlen (header_expect)) {
@ -638,6 +650,7 @@ process_arguments (int argc, char **argv)
{"useragent", required_argument, 0, 'A'},
{"header", required_argument, 0, 'k'},
{"no-body", no_argument, 0, 'N'},
{"max-age", required_argument, 0, 'M'},
{"content-type", required_argument, 0, 'T'},
{"pagesize", required_argument, 0, 'm'},
{"invert-regex", no_argument, NULL, INVERT_REGEX},
@ -665,7 +678,7 @@ process_arguments (int argc, char **argv)
}
while (1) {
c = getopt_long (argc, argv, "Vvh46t:c:w:A:k:H:P:j:T:I:a:p:d:e:s:R:r:u:f:C:J:K:S::m:NE", longopts, &option);
c = getopt_long (argc, argv, "Vvh46t:c:w:A:k:H:P:j:T:I:a:p:d:e:s:R:r:u:f:C:J:K:S::m:M:NE", longopts, &option);
if (c == -1 || c == EOF || c == 1)
break;
@ -962,6 +975,26 @@ process_arguments (int argc, char **argv)
case 'N': /* no-body */
no_body = TRUE;
break;
case 'M': /* max-age */
{
int L = strlen(optarg);
if (L && optarg[L-1] == 'm')
maximum_age = atoi (optarg) * 60;
else if (L && optarg[L-1] == 'h')
maximum_age = atoi (optarg) * 60 * 60;
else if (L && optarg[L-1] == 'd')
maximum_age = atoi (optarg) * 60 * 60 * 24;
else if (L && (optarg[L-1] == 's' ||
isdigit (optarg[L-1])))
maximum_age = atoi (optarg);
else {
fprintf (stderr, "unparsable max-age: %s\n", optarg);
exit (STATE_WARNING);
}
if (verbose >= 2)
printf ("* Maximal age of document set to %d seconds\n", maximum_age);
}
break;
case 'E': /* show extended perfdata */
show_extended_perfdata = TRUE;
break;
@ -1090,6 +1123,9 @@ print_help (void)
printf (" %s\n", "-N, --no-body");
printf (" %s\n", _("Don't wait for document body: stop reading after headers."));
printf (" %s\n", _("(Note that this still does an HTTP GET or POST, not a HEAD.)"));
printf (" %s\n", "-M, --max-age=SECONDS");
printf (" %s\n", _("Warn if document is more than SECONDS old. the number can also be of"));
printf (" %s\n", _("the form \"10m\" for minutes, \"10h\" for hours, or \"10d\" for days."));
printf (" %s\n", "-T, --content-type=STRING");
printf (" %s\n", _("specify Content-Type header media type when POSTing\n"));
printf (" %s\n", "-l, --linespan");
@ -1181,7 +1217,7 @@ print_usage (void)
printf (" [-w <warn time>] [-c <critical time>] [-t <timeout>] [-E] [-a auth]\n");
printf (" [-f <ok|warning|critcal|follow>]\n");
printf (" [-e <expect>] [-d string] [-s string] [-l] [-r <regex> | -R <case-insensitive regex>]\n");
printf (" [-P string] [-m <min_pg_size>:<max_pg_size>] [-4|-6] [-N]\n");
printf (" [-P string] [-m <min_pg_size>:<max_pg_size>] [-4|-6] [-N] [-M <age>]\n");
printf (" [-A string] [-k string] [-S <version>] [--sni] [-C <warn_age>[,<crit_age>]]\n");
printf (" [-T <content-type>] [-j method]\n", progname);
printf ("\n");
@ -1351,7 +1387,164 @@ remove_newlines (char *s)
*p = ' ';
}
char *perfd_time_ssl (double elapsed_time_ssl)
char *
perfd_time_ssl (double elapsed_time_ssl)
{
return fperfdata ("time_ssl", elapsed_time_ssl, "s", FALSE, 0, FALSE, 0, FALSE, 0, FALSE, 0);
}
char *
get_header_value (const struct phr_header* headers, const size_t nof_headers, const char* header)
{
for( int i = 0; i < nof_headers; i++ ) {
if( strncasecmp( header, headers[i].name, max( headers[i].name_len, 4 ) ) == 0 ) {
return strndup( headers[i].value, headers[i].value_len );
}
}
return NULL;
}
static time_t
parse_time_string (const char *string)
{
struct tm tm;
time_t t;
memset (&tm, 0, sizeof(tm));
/* Like this: Tue, 25 Dec 2001 02:59:03 GMT */
if (isupper (string[0]) && /* Tue */
islower (string[1]) &&
islower (string[2]) &&
',' == string[3] &&
' ' == string[4] &&
(isdigit(string[5]) || string[5] == ' ') && /* 25 */
isdigit (string[6]) &&
' ' == string[7] &&
isupper (string[8]) && /* Dec */
islower (string[9]) &&
islower (string[10]) &&
' ' == string[11] &&
isdigit (string[12]) && /* 2001 */
isdigit (string[13]) &&
isdigit (string[14]) &&
isdigit (string[15]) &&
' ' == string[16] &&
isdigit (string[17]) && /* 02: */
isdigit (string[18]) &&
':' == string[19] &&
isdigit (string[20]) && /* 59: */
isdigit (string[21]) &&
':' == string[22] &&
isdigit (string[23]) && /* 03 */
isdigit (string[24]) &&
' ' == string[25] &&
'G' == string[26] && /* GMT */
'M' == string[27] && /* GMT */
'T' == string[28]) {
tm.tm_sec = 10 * (string[23]-'0') + (string[24]-'0');
tm.tm_min = 10 * (string[20]-'0') + (string[21]-'0');
tm.tm_hour = 10 * (string[17]-'0') + (string[18]-'0');
tm.tm_mday = 10 * (string[5] == ' ' ? 0 : string[5]-'0') + (string[6]-'0');
tm.tm_mon = (!strncmp (string+8, "Jan", 3) ? 0 :
!strncmp (string+8, "Feb", 3) ? 1 :
!strncmp (string+8, "Mar", 3) ? 2 :
!strncmp (string+8, "Apr", 3) ? 3 :
!strncmp (string+8, "May", 3) ? 4 :
!strncmp (string+8, "Jun", 3) ? 5 :
!strncmp (string+8, "Jul", 3) ? 6 :
!strncmp (string+8, "Aug", 3) ? 7 :
!strncmp (string+8, "Sep", 3) ? 8 :
!strncmp (string+8, "Oct", 3) ? 9 :
!strncmp (string+8, "Nov", 3) ? 10 :
!strncmp (string+8, "Dec", 3) ? 11 :
-1);
tm.tm_year = ((1000 * (string[12]-'0') +
100 * (string[13]-'0') +
10 * (string[14]-'0') +
(string[15]-'0'))
- 1900);
tm.tm_isdst = 0; /* GMT is never in DST, right? */
if (tm.tm_mon < 0 || tm.tm_mday < 1 || tm.tm_mday > 31)
return 0;
/*
This is actually wrong: we need to subtract the local timezone
offset from GMT from this value. But, that's ok in this usage,
because we only comparing these two GMT dates against each other,
so it doesn't matter what time zone we parse them in.
*/
t = mktime (&tm);
if (t == (time_t) -1) t = 0;
if (verbose) {
const char *s = string;
while (*s && *s != '\r' && *s != '\n')
fputc (*s++, stdout);
printf (" ==> %lu\n", (unsigned long) t);
}
return t;
} else {
return 0;
}
}
int
check_document_dates (const curlhelp_curlbuf *header_buf, char (*msg)[DEFAULT_BUFFER_SIZE])
{
char *server_date = NULL;
char *document_date = NULL;
int date_result = STATE_OK;
curlhelp_statusline status_line;
struct phr_header headers[255];
size_t nof_headers = 255;
size_t msglen;
int res = phr_parse_response (header_buf->buf, header_buf->buflen,
&status_line.http_minor, &status_line.http_code, &status_line.msg, &msglen,
headers, &nof_headers, 0);
server_date = get_header_value (headers, nof_headers, "date");
document_date = get_header_value (headers, nof_headers, "last-modified");
if (!server_date || !*server_date) {
snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sServer date unknown, "), *msg);
date_result = max_state_alt(STATE_UNKNOWN, date_result);
} else if (!document_date || !*document_date) {
snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument modification date unknown, "), *msg);
date_result = max_state_alt(STATE_CRITICAL, date_result);
} else {
time_t srv_data = parse_time_string (server_date);
time_t doc_data = parse_time_string (document_date);
if (srv_data <= 0) {
snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sServer date \"%100s\" unparsable, "), *msg, server_date);
date_result = max_state_alt(STATE_CRITICAL, date_result);
} else if (doc_data <= 0) {
snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument date \"%100s\" unparsable, "), *msg, document_date);
date_result = max_state_alt(STATE_CRITICAL, date_result);
} else if (doc_data > srv_data + 30) {
snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sDocument is %d seconds in the future, "), *msg, (int)doc_data - (int)srv_data);
date_result = max_state_alt(STATE_CRITICAL, date_result);
} else if (doc_data < srv_data - maximum_age) {
int n = (srv_data - doc_data);
if (n > (60 * 60 * 24 * 2)) {
snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sLast modified %.1f days ago, "), *msg, ((float) n) / (60 * 60 * 24));
date_result = max_state_alt(STATE_CRITICAL, date_result);
} else {
snprintf (*msg, DEFAULT_BUFFER_SIZE, _("%sLast modified %d:%02d:%02d ago, "), *msg, n / (60 * 60), (n / 60) % 60, n % 60);
date_result = max_state_alt(STATE_CRITICAL, date_result);
}
}
}
if (server_date) free (server_date);
if (document_date) free (document_date);
return date_result;
}

620
plugins/picohttpparser.c Normal file
View file

@ -0,0 +1,620 @@
/*
* Copyright (c) 2009-2014 Kazuho Oku, Tokuhiro Matsuno, Daisuke Murase,
* Shigeo Mitsunari
*
* The software is licensed under either the MIT License (below) or the Perl
* license.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <assert.h>
#include <stddef.h>
#include <string.h>
#ifdef __SSE4_2__
#ifdef _MSC_VER
#include <nmmintrin.h>
#else
#include <x86intrin.h>
#endif
#endif
#include "picohttpparser.h"
/* $Id: a707070d11d499609f99d09f97535642cec910a8 $ */
#if __GNUC__ >= 3
#define likely(x) __builtin_expect(!!(x), 1)
#define unlikely(x) __builtin_expect(!!(x), 0)
#else
#define likely(x) (x)
#define unlikely(x) (x)
#endif
#ifdef _MSC_VER
#define ALIGNED(n) _declspec(align(n))
#else
#define ALIGNED(n) __attribute__((aligned(n)))
#endif
#define IS_PRINTABLE_ASCII(c) ((unsigned char)(c)-040u < 0137u)
#define CHECK_EOF() \
if (buf == buf_end) { \
*ret = -2; \
return NULL; \
}
#define EXPECT_CHAR_NO_CHECK(ch) \
if (*buf++ != ch) { \
*ret = -1; \
return NULL; \
}
#define EXPECT_CHAR(ch) \
CHECK_EOF(); \
EXPECT_CHAR_NO_CHECK(ch);
#define ADVANCE_TOKEN(tok, toklen) \
do { \
const char *tok_start = buf; \
static const char ALIGNED(16) ranges2[] = "\000\040\177\177"; \
int found2; \
buf = findchar_fast(buf, buf_end, ranges2, sizeof(ranges2) - 1, &found2); \
if (!found2) { \
CHECK_EOF(); \
} \
while (1) { \
if (*buf == ' ') { \
break; \
} else if (unlikely(!IS_PRINTABLE_ASCII(*buf))) { \
if ((unsigned char)*buf < '\040' || *buf == '\177') { \
*ret = -1; \
return NULL; \
} \
} \
++buf; \
CHECK_EOF(); \
} \
tok = tok_start; \
toklen = buf - tok_start; \
} while (0)
static const char *token_char_map = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
"\0\1\0\1\1\1\1\1\0\0\1\1\0\1\1\0\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0"
"\0\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\1\1"
"\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\1\0\1\0"
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
static const char *findchar_fast(const char *buf, const char *buf_end, const char *ranges, size_t ranges_size, int *found)
{
*found = 0;
#if __SSE4_2__
if (likely(buf_end - buf >= 16)) {
__m128i ranges16 = _mm_loadu_si128((const __m128i *)ranges);
size_t left = (buf_end - buf) & ~15;
do {
__m128i b16 = _mm_loadu_si128((const __m128i *)buf);
int r = _mm_cmpestri(ranges16, ranges_size, b16, 16, _SIDD_LEAST_SIGNIFICANT | _SIDD_CMP_RANGES | _SIDD_UBYTE_OPS);
if (unlikely(r != 16)) {
buf += r;
*found = 1;
break;
}
buf += 16;
left -= 16;
} while (likely(left != 0));
}
#else
/* suppress unused parameter warning */
(void)buf_end;
(void)ranges;
(void)ranges_size;
#endif
return buf;
}
static const char *get_token_to_eol(const char *buf, const char *buf_end, const char **token, size_t *token_len, int *ret)
{
const char *token_start = buf;
#ifdef __SSE4_2__
static const char ranges1[] = "\0\010"
/* allow HT */
"\012\037"
/* allow SP and up to but not including DEL */
"\177\177"
/* allow chars w. MSB set */
;
int found;
buf = findchar_fast(buf, buf_end, ranges1, sizeof(ranges1) - 1, &found);
if (found)
goto FOUND_CTL;
#else
/* find non-printable char within the next 8 bytes, this is the hottest code; manually inlined */
while (likely(buf_end - buf >= 8)) {
#define DOIT() \
do { \
if (unlikely(!IS_PRINTABLE_ASCII(*buf))) \
goto NonPrintable; \
++buf; \
} while (0)
DOIT();
DOIT();
DOIT();
DOIT();
DOIT();
DOIT();
DOIT();
DOIT();
#undef DOIT
continue;
NonPrintable:
if ((likely((unsigned char)*buf < '\040') && likely(*buf != '\011')) || unlikely(*buf == '\177')) {
goto FOUND_CTL;
}
++buf;
}
#endif
for (;; ++buf) {
CHECK_EOF();
if (unlikely(!IS_PRINTABLE_ASCII(*buf))) {
if ((likely((unsigned char)*buf < '\040') && likely(*buf != '\011')) || unlikely(*buf == '\177')) {
goto FOUND_CTL;
}
}
}
FOUND_CTL:
if (likely(*buf == '\015')) {
++buf;
EXPECT_CHAR('\012');
*token_len = buf - 2 - token_start;
} else if (*buf == '\012') {
*token_len = buf - token_start;
++buf;
} else {
*ret = -1;
return NULL;
}
*token = token_start;
return buf;
}
static const char *is_complete(const char *buf, const char *buf_end, size_t last_len, int *ret)
{
int ret_cnt = 0;
buf = last_len < 3 ? buf : buf + last_len - 3;
while (1) {
CHECK_EOF();
if (*buf == '\015') {
++buf;
CHECK_EOF();
EXPECT_CHAR('\012');
++ret_cnt;
} else if (*buf == '\012') {
++buf;
++ret_cnt;
} else {
++buf;
ret_cnt = 0;
}
if (ret_cnt == 2) {
return buf;
}
}
*ret = -2;
return NULL;
}
#define PARSE_INT(valp_, mul_) \
if (*buf < '0' || '9' < *buf) { \
buf++; \
*ret = -1; \
return NULL; \
} \
*(valp_) = (mul_) * (*buf++ - '0');
#define PARSE_INT_3(valp_) \
do { \
int res_ = 0; \
PARSE_INT(&res_, 100) \
*valp_ = res_; \
PARSE_INT(&res_, 10) \
*valp_ += res_; \
PARSE_INT(&res_, 1) \
*valp_ += res_; \
} while (0)
/* returned pointer is always within [buf, buf_end), or null */
static const char *parse_http_version(const char *buf, const char *buf_end, int *minor_version, int *ret)
{
/* we want at least [HTTP/1.<two chars>] to try to parse */
if (buf_end - buf < 9) {
*ret = -2;
return NULL;
}
EXPECT_CHAR_NO_CHECK('H');
EXPECT_CHAR_NO_CHECK('T');
EXPECT_CHAR_NO_CHECK('T');
EXPECT_CHAR_NO_CHECK('P');
EXPECT_CHAR_NO_CHECK('/');
EXPECT_CHAR_NO_CHECK('1');
EXPECT_CHAR_NO_CHECK('.');
PARSE_INT(minor_version, 1);
return buf;
}
static const char *parse_headers(const char *buf, const char *buf_end, struct phr_header *headers, size_t *num_headers,
size_t max_headers, int *ret)
{
for (;; ++*num_headers) {
CHECK_EOF();
if (*buf == '\015') {
++buf;
EXPECT_CHAR('\012');
break;
} else if (*buf == '\012') {
++buf;
break;
}
if (*num_headers == max_headers) {
*ret = -1;
return NULL;
}
if (!(*num_headers != 0 && (*buf == ' ' || *buf == '\t'))) {
/* parsing name, but do not discard SP before colon, see
* http://www.mozilla.org/security/announce/2006/mfsa2006-33.html */
headers[*num_headers].name = buf;
static const char ALIGNED(16) ranges1[] = "\x00 " /* control chars and up to SP */
"\"\"" /* 0x22 */
"()" /* 0x28,0x29 */
",," /* 0x2c */
"//" /* 0x2f */
":@" /* 0x3a-0x40 */
"[]" /* 0x5b-0x5d */
"{\377"; /* 0x7b-0xff */
int found;
buf = findchar_fast(buf, buf_end, ranges1, sizeof(ranges1) - 1, &found);
if (!found) {
CHECK_EOF();
}
while (1) {
if (*buf == ':') {
break;
} else if (!token_char_map[(unsigned char)*buf]) {
*ret = -1;
return NULL;
}
++buf;
CHECK_EOF();
}
if ((headers[*num_headers].name_len = buf - headers[*num_headers].name) == 0) {
*ret = -1;
return NULL;
}
++buf;
for (;; ++buf) {
CHECK_EOF();
if (!(*buf == ' ' || *buf == '\t')) {
break;
}
}
} else {
headers[*num_headers].name = NULL;
headers[*num_headers].name_len = 0;
}
if ((buf = get_token_to_eol(buf, buf_end, &headers[*num_headers].value, &headers[*num_headers].value_len, ret)) == NULL) {
return NULL;
}
}
return buf;
}
static const char *parse_request(const char *buf, const char *buf_end, const char **method, size_t *method_len, const char **path,
size_t *path_len, int *minor_version, struct phr_header *headers, size_t *num_headers,
size_t max_headers, int *ret)
{
/* skip first empty line (some clients add CRLF after POST content) */
CHECK_EOF();
if (*buf == '\015') {
++buf;
EXPECT_CHAR('\012');
} else if (*buf == '\012') {
++buf;
}
/* parse request line */
ADVANCE_TOKEN(*method, *method_len);
++buf;
ADVANCE_TOKEN(*path, *path_len);
++buf;
if ((buf = parse_http_version(buf, buf_end, minor_version, ret)) == NULL) {
return NULL;
}
if (*buf == '\015') {
++buf;
EXPECT_CHAR('\012');
} else if (*buf == '\012') {
++buf;
} else {
*ret = -1;
return NULL;
}
return parse_headers(buf, buf_end, headers, num_headers, max_headers, ret);
}
int phr_parse_request(const char *buf_start, size_t len, const char **method, size_t *method_len, const char **path,
size_t *path_len, int *minor_version, struct phr_header *headers, size_t *num_headers, size_t last_len)
{
const char *buf = buf_start, *buf_end = buf_start + len;
size_t max_headers = *num_headers;
int r;
*method = NULL;
*method_len = 0;
*path = NULL;
*path_len = 0;
*minor_version = -1;
*num_headers = 0;
/* if last_len != 0, check if the request is complete (a fast countermeasure
againt slowloris */
if (last_len != 0 && is_complete(buf, buf_end, last_len, &r) == NULL) {
return r;
}
if ((buf = parse_request(buf, buf_end, method, method_len, path, path_len, minor_version, headers, num_headers, max_headers,
&r)) == NULL) {
return r;
}
return (int)(buf - buf_start);
}
static const char *parse_response(const char *buf, const char *buf_end, int *minor_version, int *status, const char **msg,
size_t *msg_len, struct phr_header *headers, size_t *num_headers, size_t max_headers, int *ret)
{
/* parse "HTTP/1.x" */
if ((buf = parse_http_version(buf, buf_end, minor_version, ret)) == NULL) {
return NULL;
}
/* skip space */
if (*buf++ != ' ') {
*ret = -1;
return NULL;
}
/* parse status code, we want at least [:digit:][:digit:][:digit:]<other char> to try to parse */
if (buf_end - buf < 4) {
*ret = -2;
return NULL;
}
PARSE_INT_3(status);
/* skip space */
if (*buf++ != ' ') {
*ret = -1;
return NULL;
}
/* get message */
if ((buf = get_token_to_eol(buf, buf_end, msg, msg_len, ret)) == NULL) {
return NULL;
}
return parse_headers(buf, buf_end, headers, num_headers, max_headers, ret);
}
int phr_parse_response(const char *buf_start, size_t len, int *minor_version, int *status, const char **msg, size_t *msg_len,
struct phr_header *headers, size_t *num_headers, size_t last_len)
{
const char *buf = buf_start, *buf_end = buf + len;
size_t max_headers = *num_headers;
int r;
*minor_version = -1;
*status = 0;
*msg = NULL;
*msg_len = 0;
*num_headers = 0;
/* if last_len != 0, check if the response is complete (a fast countermeasure
against slowloris */
if (last_len != 0 && is_complete(buf, buf_end, last_len, &r) == NULL) {
return r;
}
if ((buf = parse_response(buf, buf_end, minor_version, status, msg, msg_len, headers, num_headers, max_headers, &r)) == NULL) {
return r;
}
return (int)(buf - buf_start);
}
int phr_parse_headers(const char *buf_start, size_t len, struct phr_header *headers, size_t *num_headers, size_t last_len)
{
const char *buf = buf_start, *buf_end = buf + len;
size_t max_headers = *num_headers;
int r;
*num_headers = 0;
/* if last_len != 0, check if the response is complete (a fast countermeasure
against slowloris */
if (last_len != 0 && is_complete(buf, buf_end, last_len, &r) == NULL) {
return r;
}
if ((buf = parse_headers(buf, buf_end, headers, num_headers, max_headers, &r)) == NULL) {
return r;
}
return (int)(buf - buf_start);
}
enum {
CHUNKED_IN_CHUNK_SIZE,
CHUNKED_IN_CHUNK_EXT,
CHUNKED_IN_CHUNK_DATA,
CHUNKED_IN_CHUNK_CRLF,
CHUNKED_IN_TRAILERS_LINE_HEAD,
CHUNKED_IN_TRAILERS_LINE_MIDDLE
};
static int decode_hex(int ch)
{
if ('0' <= ch && ch <= '9') {
return ch - '0';
} else if ('A' <= ch && ch <= 'F') {
return ch - 'A' + 0xa;
} else if ('a' <= ch && ch <= 'f') {
return ch - 'a' + 0xa;
} else {
return -1;
}
}
ssize_t phr_decode_chunked(struct phr_chunked_decoder *decoder, char *buf, size_t *_bufsz)
{
size_t dst = 0, src = 0, bufsz = *_bufsz;
ssize_t ret = -2; /* incomplete */
while (1) {
switch (decoder->_state) {
case CHUNKED_IN_CHUNK_SIZE:
for (;; ++src) {
int v;
if (src == bufsz)
goto Exit;
if ((v = decode_hex(buf[src])) == -1) {
if (decoder->_hex_count == 0) {
ret = -1;
goto Exit;
}
break;
}
if (decoder->_hex_count == sizeof(size_t) * 2) {
ret = -1;
goto Exit;
}
decoder->bytes_left_in_chunk = decoder->bytes_left_in_chunk * 16 + v;
++decoder->_hex_count;
}
decoder->_hex_count = 0;
decoder->_state = CHUNKED_IN_CHUNK_EXT;
/* fallthru */
case CHUNKED_IN_CHUNK_EXT:
/* RFC 7230 A.2 "Line folding in chunk extensions is disallowed" */
for (;; ++src) {
if (src == bufsz)
goto Exit;
if (buf[src] == '\012')
break;
}
++src;
if (decoder->bytes_left_in_chunk == 0) {
if (decoder->consume_trailer) {
decoder->_state = CHUNKED_IN_TRAILERS_LINE_HEAD;
break;
} else {
goto Complete;
}
}
decoder->_state = CHUNKED_IN_CHUNK_DATA;
/* fallthru */
case CHUNKED_IN_CHUNK_DATA: {
size_t avail = bufsz - src;
if (avail < decoder->bytes_left_in_chunk) {
if (dst != src)
memmove(buf + dst, buf + src, avail);
src += avail;
dst += avail;
decoder->bytes_left_in_chunk -= avail;
goto Exit;
}
if (dst != src)
memmove(buf + dst, buf + src, decoder->bytes_left_in_chunk);
src += decoder->bytes_left_in_chunk;
dst += decoder->bytes_left_in_chunk;
decoder->bytes_left_in_chunk = 0;
decoder->_state = CHUNKED_IN_CHUNK_CRLF;
}
/* fallthru */
case CHUNKED_IN_CHUNK_CRLF:
for (;; ++src) {
if (src == bufsz)
goto Exit;
if (buf[src] != '\015')
break;
}
if (buf[src] != '\012') {
ret = -1;
goto Exit;
}
++src;
decoder->_state = CHUNKED_IN_CHUNK_SIZE;
break;
case CHUNKED_IN_TRAILERS_LINE_HEAD:
for (;; ++src) {
if (src == bufsz)
goto Exit;
if (buf[src] != '\015')
break;
}
if (buf[src++] == '\012')
goto Complete;
decoder->_state = CHUNKED_IN_TRAILERS_LINE_MIDDLE;
/* fallthru */
case CHUNKED_IN_TRAILERS_LINE_MIDDLE:
for (;; ++src) {
if (src == bufsz)
goto Exit;
if (buf[src] == '\012')
break;
}
++src;
decoder->_state = CHUNKED_IN_TRAILERS_LINE_HEAD;
break;
default:
assert(!"decoder is corrupt");
}
}
Complete:
ret = bufsz - src;
Exit:
if (dst != src)
memmove(buf + dst, buf + src, bufsz - src);
*_bufsz = dst;
return ret;
}
int phr_decode_chunked_is_in_data(struct phr_chunked_decoder *decoder)
{
return decoder->_state == CHUNKED_IN_CHUNK_DATA;
}
#undef CHECK_EOF
#undef EXPECT_CHAR
#undef ADVANCE_TOKEN

89
plugins/picohttpparser.h Normal file
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@ -0,0 +1,89 @@
/*
* Copyright (c) 2009-2014 Kazuho Oku, Tokuhiro Matsuno, Daisuke Murase,
* Shigeo Mitsunari
*
* The software is licensed under either the MIT License (below) or the Perl
* license.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef picohttpparser_h
#define picohttpparser_h
#include <sys/types.h>
#ifdef _MSC_VER
#define ssize_t intptr_t
#endif
/* $Id: 67fd3ee74103ada60258d8a16e868f483abcca87 $ */
#ifdef __cplusplus
extern "C" {
#endif
/* contains name and value of a header (name == NULL if is a continuing line
* of a multiline header */
struct phr_header {
const char *name;
size_t name_len;
const char *value;
size_t value_len;
};
/* returns number of bytes consumed if successful, -2 if request is partial,
* -1 if failed */
int phr_parse_request(const char *buf, size_t len, const char **method, size_t *method_len, const char **path, size_t *path_len,
int *minor_version, struct phr_header *headers, size_t *num_headers, size_t last_len);
/* ditto */
int phr_parse_response(const char *_buf, size_t len, int *minor_version, int *status, const char **msg, size_t *msg_len,
struct phr_header *headers, size_t *num_headers, size_t last_len);
/* ditto */
int phr_parse_headers(const char *buf, size_t len, struct phr_header *headers, size_t *num_headers, size_t last_len);
/* should be zero-filled before start */
struct phr_chunked_decoder {
size_t bytes_left_in_chunk; /* number of bytes left in current chunk */
char consume_trailer; /* if trailing headers should be consumed */
char _hex_count;
char _state;
};
/* the function rewrites the buffer given as (buf, bufsz) removing the chunked-
* encoding headers. When the function returns without an error, bufsz is
* updated to the length of the decoded data available. Applications should
* repeatedly call the function while it returns -2 (incomplete) every time
* supplying newly arrived data. If the end of the chunked-encoded data is
* found, the function returns a non-negative number indicating the number of
* octets left undecoded at the tail of the supplied buffer. Returns -1 on
* error.
*/
ssize_t phr_decode_chunked(struct phr_chunked_decoder *decoder, char *buf, size_t *bufsz);
/* returns if the chunked decoder is in middle of chunked data */
int phr_decode_chunked_is_in_data(struct phr_chunked_decoder *decoder);
#ifdef __cplusplus
}
#endif
#endif