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httpd: support HEAD requests even in !CGI config

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2021-05-04 20:15:24 +02:00
parent ff4d898fe6
commit 32a8258be7
1 changed files with 10 additions and 13 deletions
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23
networking/httpd.c
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@ -548,7 +548,6 @@ enum {
enum {
SEND_HEADERS = (1 << 0),
SEND_BODY = (1 << 1),
SEND_HEADERS_AND_BODY = SEND_HEADERS + SEND_BODY,
};
static void send_file_and_exit(const char *url, int what) NORETURN;
@ -2177,11 +2176,11 @@ static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr)
#if ENABLE_FEATURE_HTTPD_CGI
unsigned total_headers_len;
#endif
#if ENABLE_FEATURE_HTTPD_CGI
const char *prequest;
static const char request_GET[] ALIGN1 = "GET";
static const char request_HEAD[] ALIGN1 = "HEAD";
#if ENABLE_FEATURE_HTTPD_CGI
static const char request_POST[] ALIGN1 = "POST";
const char *prequest;
unsigned long POST_length;
enum CGI_type {
CGI_NONE = 0,
@ -2285,24 +2284,23 @@ static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr)
#endif
/* Determine type of request (GET/POST/...) */
#if ENABLE_FEATURE_HTTPD_CGI
prequest = request_GET;
if (strcasecmp(iobuf, prequest) == 0)
goto found;
prequest = request_HEAD;
if (strcasecmp(iobuf, prequest) == 0)
goto found;
#if !ENABLE_FEATURE_HTTPD_CGI
send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
#else
prequest = request_POST;
if (strcasecmp(iobuf, prequest) == 0)
goto found;
/* For CGI, allow DELETE, PUT, OPTIONS, etc too */
prequest = alloca(16);
safe_strncpy((char*)prequest, iobuf, 16);
found:
#else
if (strcasecmp(iobuf, "GET") != 0)
send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
#endif
found:
/* Copy URL to stack-allocated char[] */
urlcopy = alloca((HTTP_slash - urlp) + 2 + strlen(index_page));
strcpy(urlcopy, urlp);
@ -2592,13 +2590,12 @@ static void handle_incoming_and_exit(const len_and_sockaddr *fromAddr)
/* POST / DELETE / PUT / OPTIONS for files do not make sense */
send_headers_and_exit(HTTP_NOT_IMPLEMENTED);
}
send_file_and_exit(tptr,
(prequest != request_HEAD ? SEND_HEADERS_AND_BODY : SEND_HEADERS)
);
#else
/* It was verified earlier that it is a "GET" */
send_file_and_exit(tptr, SEND_HEADERS_AND_BODY);
/* !CGI: it can be only GET or HEAD */
#endif
send_file_and_exit(tptr,
(prequest != request_HEAD ? (SEND_HEADERS + SEND_BODY) : SEND_HEADERS)
);
}
/*