d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement and document support for an HTTP_REFERER environment variable.

Browse Source 
PR:		28171
Submitted by:	Andre Albsmeier <andre.albsmeier@mchp.siemens.de>
Approved by:	re (bmah)
MFC after:	1 week
This commit is contained in:
Dag-Erling Smørgrav 2002-11-28 12:07:15 +00:00
parent fdff30d256
commit d5216a4fb7
2 changed files with 26 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/libfetch/fetch.3
View File

@ -511,6 +511,11 @@ variable.
This variable is used if and only if connected to an HTTP proxy, and
is ignored if a user and/or a password were specified in the proxy
URL.
.It Ev HTTP_REFERER
Specifies the referer URL to use for HTTP requests.
If set to
.Dq auto ,
the document URL will be used as referer URL.
.It Ev HTTP_USER_AGENT
Specifies the User-Agent string to use for HTTP requests.
This can be useful when working with HTTP origin or proxy servers that

33
lib/libfetch/http.c
View File

@ -776,10 +776,7 @@ _http_request(struct url *URL, const char *op, struct url_stat *us,
const char *p;
FILE *f;
hdr_t h;
char *host;
#ifdef INET6
char hbuf[MAXHOSTNAMELEN + 1];
#endif
char hbuf[MAXHOSTNAMELEN + 7], *host;
direct = CHECK_FLAG('d');
noredirect = CHECK_FLAG('A');
@ -831,24 +828,29 @@ _http_request(struct url *URL, const char *op, struct url_stat *us,
host = hbuf;
}
#endif
if (url->port != _fetch_default_port(url->scheme)) {
if (host != hbuf) {
strcpy(hbuf, host);
host = hbuf;
}
snprintf(hbuf + strlen(hbuf),
sizeof(hbuf) - strlen(hbuf), ":%d", url->port);
}
/* send request */
if (verbose)
_fetch_info("requesting %s://%s:%d%s",
url->scheme, host, url->port, url->doc);
_fetch_info("requesting %s://%s%s",
url->scheme, host, url->doc);
if (purl) {
_http_cmd(conn, "%s %s://%s:%d%s HTTP/1.1",
op, url->scheme, host, url->port, url->doc);
_http_cmd(conn, "%s %s://%s%s HTTP/1.1",
op, url->scheme, host, url->doc);
} else {
_http_cmd(conn, "%s %s HTTP/1.1",
op, url->doc);
}
/* virtual host */
if (url->port == _fetch_default_port(url->scheme))
_http_cmd(conn, "Host: %s", host);
else
_http_cmd(conn, "Host: %s:%d", host, url->port);
_http_cmd(conn, "Host: %s", host);
/* proxy authorization */
if (purl) {
@ -874,6 +876,13 @@ _http_request(struct url *URL, const char *op, struct url_stat *us,
}
/* other headers */
if ((p = getenv("HTTP_REFERER")) != NULL && *p != '\0') {
if (strcasecmp(p, "auto") == 0)
_http_cmd(conn, "Referer: %s://%s%s",
url->scheme, host, url->doc);
else
_http_cmd(conn, "Referer: %s", p);
}
if ((p = getenv("HTTP_USER_AGENT")) != NULL && *p != '\0')
_http_cmd(conn, "User-Agent: %s", p);
else