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Implement restart

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This commit is contained in:
Dag-Erling Smørgrav 2000-05-07 20:51:31 +00:00
parent 3594c3a001
commit 3d2a847151
1 changed files with 32 additions and 1 deletions
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33
lib/libfetch/http.c
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@ -79,6 +79,9 @@ extern char *__progname;
#define ENDL "\r\n"
#define HTTP_OK 200
#define HTTP_PARTIAL 206
struct cookie
{
FILE *real_f;
@ -299,6 +302,7 @@ fetchGetHTTP(struct url *URL, char *flags)
char *ln, *p, *px, *q;
FILE *f, *cf;
size_t len;
off_t pos = 0;
direct = (flags && strchr(flags, 'd'));
verbose = (flags && strchr(flags, 'v'));
@ -389,6 +393,8 @@ fetchGetHTTP(struct url *URL, char *flags)
}
_http_cmd(f, "Host: %s:%d" ENDL, URL->host, URL->port);
_http_cmd(f, "User-Agent: %s " _LIBFETCH_VER ENDL, __progname);
if (URL->offset)
_http_cmd(f, "Range: bytes=%lld-" ENDL, URL->offset);
_http_cmd(f, "Connection: close" ENDL ENDL);
/* get response */
@ -409,7 +415,7 @@ fetchGetHTTP(struct url *URL, char *flags)
DEBUG(fprintf(stderr, "code: [\033[1m%d\033[m]\n", e));
/* add code to handle redirects later */
if (e != 200) {
if (e != (URL->offset ? HTTP_PARTIAL : HTTP_OK)) {
_http_seterr(e);
goto fouch;
}
@ -446,6 +452,23 @@ fetchGetHTTP(struct url *URL, char *flags)
DEBUG(fprintf(stderr, "conttype: [\033[1m%s\033[m]\n",
c->content_type));
#undef CONTTYPE
#define CONTRANGE "Content-Range:"
#define BYTES "bytes "
} else if (strncasecmp(ln, CONTRANGE, sizeof CONTRANGE - 1) == 0) {
p = ln + sizeof CONTRANGE - 1;
while ((p < ln + len) && isspace(*p))
p++;
if (strncasecmp(p, BYTES, sizeof BYTES - 1) != 0
|| (p += 6) >= ln + len)
goto fouch;
while ((p < ln + len) && isdigit(*p))
pos = pos * 10 + (*p++ - '0');
/* XXX wouldn't hurt to be slightly more paranoid here */
DEBUG(fprintf(stderr, "contrange: [\033[1m%lld-\033[m]\n", pos));
if (pos > URL->offset)
goto fouch;
#undef BYTES
#undef CONTRANGE
}
}
@ -459,6 +482,10 @@ fetchGetHTTP(struct url *URL, char *flags)
if (cf == NULL)
goto fouch;
while (pos < URL->offset)
if (fgetc(cf) == EOF)
goto cfouch;
return cf;
ouch:
@ -472,6 +499,10 @@ fetchGetHTTP(struct url *URL, char *flags)
free(c);
_http_seterr(999); /* XXX do this properly RSN */
return NULL;
cfouch:
fclose(cf);
_http_seterr(999); /* XXX do this properly RSN */
return NULL;
}
FILE *