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Hackish support for 302 redirect.

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This commit is contained in:
Dag-Erling Smørgrav 2000-05-26 15:34:42 +00:00
parent d5f65fcbd7
commit 6f9febf93c
1 changed files with 59 additions and 24 deletions
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83
lib/libfetch/http.c
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@ -84,6 +84,7 @@ extern char *__progname;
#define HTTP_OK 200
#define HTTP_PARTIAL 206
#define HTTP_MOVED 302
struct cookie
{
@ -411,6 +412,21 @@ ouch:
return NULL;
}
/*
* Check a header line
*/
char *
_http_match(char *str, char *hdr)
{
while (*str && *hdr && tolower(*str++) == tolower(*hdr++))
/* nothing */;
if (*str || *hdr != ':')
return NULL;
while (*hdr && isspace(*++hdr))
/* nothing */;
return hdr;
}
/*
* Send a HEAD or GET request
*/
@ -476,34 +492,21 @@ _http_request(FILE *f, char *op, struct url *URL, char *flags)
return e;
}
/*
* Check a header line
*/
char *
_http_match(char *str, char *hdr)
{
while (*str && *hdr && tolower(*str++) == tolower(*hdr++))
/* nothing */;
if (*str || *hdr != ':')
return NULL;
while (*hdr && isspace(*++hdr))
/* nothing */;
return hdr;
}
/*
* Retrieve a file by HTTP
*/
FILE *
fetchGetHTTP(struct url *URL, char *flags)
{
int e, enc = ENC_NONE, i;
int e, enc = ENC_NONE, i, noredirect;
struct cookie *c;
char *ln, *p, *q;
FILE *f, *cf;
size_t len;
off_t pos = 0;
noredirect = (flags && strchr(flags, 'A'));
/* allocate cookie */
if ((c = calloc(1, sizeof *c)) == NULL)
return NULL;
@ -516,9 +519,8 @@ fetchGetHTTP(struct url *URL, char *flags)
c->real_f = f;
e = _http_request(f, "GET", URL, flags);
/* add code to handle redirects later */
if (e != (URL->offset ? HTTP_PARTIAL : HTTP_OK)) {
if (e != (URL->offset ? HTTP_PARTIAL : HTTP_OK)
&& (e != HTTP_MOVED || noredirect)) {
_http_seterr(e);
goto fouch;
}
@ -533,7 +535,22 @@ fetchGetHTTP(struct url *URL, char *flags)
--len;
ln[len] = '\0'; /* XXX */
DEBUG(fprintf(stderr, "header: [\033[1m%s\033[m]\n", ln));
if ((p = _http_match("Transfer-Encoding", ln)) != NULL) {
if ((p = _http_match("Location", ln)) != NULL) {
struct url *url;
for (q = p; *q && !isspace(*q); q++)
/* VOID */ ;
*q = 0;
if ((url = fetchParseURL(p)) == NULL)
goto fouch;
url->offset = URL->offset;
url->length = URL->length;
DEBUG(fprintf(stderr, "location: [\033[1m%s\033[m]\n", p));
cf = fetchGetHTTP(url, flags);
fetchFreeURL(url);
fclose(f);
return cf;
} else if ((p = _http_match("Transfer-Encoding", ln)) != NULL) {
for (q = p; *q && !isspace(*q); q++)
/* VOID */ ;
*q = 0;
@ -599,10 +616,12 @@ fetchPutHTTP(struct url *URL, char *flags)
int
fetchStatHTTP(struct url *URL, struct url_stat *us, char *flags)
{
int e;
int e, noredirect;
size_t len;
char *ln, *p;
char *ln, *p, *q;
FILE *f;
noredirect = (flags && strchr(flags, 'A'));
us->size = -1;
us->atime = us->mtime = 0;
@ -611,7 +630,8 @@ fetchStatHTTP(struct url *URL, struct url_stat *us, char *flags)
if ((f = _http_connect(URL, flags)) == NULL)
return -1;
if ((e = _http_request(f, "HEAD", URL, flags)) != HTTP_OK) {
e = _http_request(f, "HEAD", URL, flags);
if (e != HTTP_OK && (e != HTTP_MOVED || noredirect)) {
_http_seterr(e);
goto ouch;
}
@ -625,7 +645,22 @@ fetchStatHTTP(struct url *URL, struct url_stat *us, char *flags)
--len;
ln[len] = '\0'; /* XXX */
DEBUG(fprintf(stderr, "header: [\033[1m%s\033[m]\n", ln));
if ((p = _http_match("Last-Modified", ln)) != NULL) {
if ((p = _http_match("Location", ln)) != NULL) {
struct url *url;
for (q = p; *q && !isspace(*q); q++)
/* VOID */ ;
*q = 0;
if ((url = fetchParseURL(p)) == NULL)
goto ouch;
url->offset = URL->offset;
url->length = URL->length;
DEBUG(fprintf(stderr, "location: [\033[1m%s\033[m]\n", p));
e = fetchStatHTTP(url, us, flags);
fetchFreeURL(url);
fclose(f);
return e;
} else if ((p = _http_match("Last-Modified", ln)) != NULL) {
struct tm tm;
char locale[64];