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Use sizeof more consistently.

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Outline sanity checking of server port spec.
This commit is contained in:
Dag-Erling Smørgrav 2000-05-07 20:01:55 +00:00
parent 32425dafcd
commit e6182307e8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=60189
1 changed files with 41 additions and 11 deletions
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52
lib/libfetch/http.c
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@ -42,7 +42,7 @@
* copyright notice and this permission notice appear in all
* supporting documentation, and that the name of M.I.T. not be used
* in advertising or publicity pertaining to distribution of the
* software without specific, written prior permission. M.I.T. makes
* software without specific, written prior permission. M.I.T. makes
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
@ -64,6 +64,7 @@
#include <err.h>
#include <ctype.h>
#include <netdb.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
@ -303,24 +304,52 @@ fetchGetHTTP(struct url *URL, char *flags)
verbose = (flags && strchr(flags, 'v'));
/* allocate cookie */
if ((c = calloc(1, sizeof(struct cookie))) == NULL)
if ((c = calloc(1, sizeof *c)) == NULL)
return NULL;
/* check port */
if (!URL->port)
URL->port = 80; /* default HTTP port */
if (!URL->port) {
struct servent *se;
if ((se = getservbyname("http", "tcp")) != NULL)
URL->port = ntohs(se->s_port);
else
URL->port = 80;
}
/* attempt to connect to proxy server */
if (!direct && (px = getenv("HTTP_PROXY")) != NULL) {
char host[MAXHOSTNAMELEN];
int port = 3128; /* XXX I think 3128 is default... check? */
int port = 0;
/* measure length */
len = strcspn(px, ":");
/* get port (XXX atoi is a little too tolerant perhaps?) */
if (px[len] == ':')
if (px[len] == ':') {
if (strspn(px+len+1, "0123456789") != strlen(px+len+1)
|| strlen(px+len+1) > 5) {
/* XXX we should emit some kind of warning */
}
port = atoi(px+len+1);
if (port < 1 || port > 65535) {
/* XXX we should emit some kind of warning */
}
}
if (!port) {
#if 0
/*
* commented out, since there is currently no service name
* for HTTP proxies
*/
struct servent *se;
if ((se = getservbyname("xxxx", "tcp")) != NULL)
port = ntohs(se->s_port);
else
#endif
port = 3128;
}
/* get host name */
if (len >= MAXHOSTNAMELEN)
@ -391,11 +420,11 @@ fetchGetHTTP(struct url *URL, char *flags)
goto fouch;
if ((ln[0] == '\r') || (ln[0] == '\n'))
break;
DEBUG(fprintf(stderr, "header: [\033[1m%*.*s\033[m]\n",
DEBUG(fprintf(stderr, "header: [\033[1m%*.*s\033[m]\n",
(int)len-2, (int)len-2, ln));
#define XFERENC "Transfer-Encoding:"
if (strncasecmp(ln, XFERENC, sizeof(XFERENC)-1) == 0) {
p = ln + sizeof(XFERENC) - 1;
if (strncasecmp(ln, XFERENC, sizeof XFERENC - 1) == 0) {
p = ln + sizeof XFERENC - 1;
while ((p < ln + len) && isspace(*p))
p++;
for (q = p; (q < ln + len) && !isspace(*q); q++)
@ -406,8 +435,8 @@ fetchGetHTTP(struct url *URL, char *flags)
DEBUG(fprintf(stderr, "xferenc: [\033[1m%s\033[m]\n", p));
#undef XFERENC
#define CONTTYPE "Content-Type:"
} else if (strncasecmp(ln, CONTTYPE, sizeof(CONTTYPE)-1) == 0) {
p = ln + sizeof(CONTTYPE) - 1;
} else if (strncasecmp(ln, CONTTYPE, sizeof CONTTYPE - 1) == 0) {
p = ln + sizeof CONTTYPE - 1;
while ((p < ln + len) && isspace(*p))
p++;
for (i = 0; p < ln + len; p++)
@ -429,6 +458,7 @@ fetchGetHTTP(struct url *URL, char *flags)
(int (*)(void *))_http_closefn);
if (cf == NULL)
goto fouch;
return cf;
ouch: